Electrical connector for a smart card, comprising a switch for locking the card-carrying cover

The first electrical connector for a smart card with a switch that locks the card cover. TECHNICAL FIELD The present invention relates to an electrical connector for contacting a smart card, and the present invention more specifically relates to such a type of electrical connector.

BACKGROUND OF THE INVENTION This electrical connector is shown and described in the document DE-G-94.07486.0 and the document WO-A98/52137.

These documents show and describe an electrical connector for smart cards. The electrical connector has a connection area underneath,

-This type of electrical connector includes a plate-shaped lower base plate made of insulating material. This base plate constitutes a support for signal electrical contact elements,

-This type of electrical connector includes an upper cover, one of the opposite sides of the upper cover has a cavity, and the cavity at least partially accommodates the smart card,

-This type of electrical connector, in which the upper cover is installed so as to be able to rotate about a horizontal transverse contact axis between the open non-contact position and the closed contact position relative to the bottom plate, and the contact axis is set close to the bottom plate and The longitudinal rear end that the cover faces, in which, in the closed contact position, the cover is substantially parallel to the bottom plate, and in which, the contact area on the smart card is engaged with the signal electrical contact element, and

-This type of electrical connector includes a locking element for locking the cover in the closed position. The locking element is set to move between the unlocked limit position and the locked limit position. This type of Electrical connectors, which are connected to the cover to carry one or more smart cards, have many applications. Among the electronic appliances equipped with such electrical connectors, there are mainly known equipment for financial and bank audit processing. , And radio communication equipment, such as phones called mobile phones, digital telephones (Big Brother), portable phones, etc. · Summary of the invention In order to improve the confidentiality of the operation of electrical appliances and/or protect smart cards, especially when

00810505.7 In the case of the correct operation of the connector and the smart card, the present invention provides the above-mentioned type of electrical connector, which is characterized in that the locking element has two protrusions facing each other, and the protrusions are electrical conductors and are electrically connected Together, each protrusion has a conductive surface. Depending on the position of the locking element, the conductive surface may or may not be in electrical contact with the corresponding electrical switch contact elements, so that they are electrically connected or not electrically connected to form an electrical A switch for detecting the state of the cover, that is, detecting that the cover has been locked or unlocked in the locked position, wherein the element of the lock cover is installed to be longitudinally movable relative to the lower base plate. According to other features of the present invention :

-The components used to lock the cover include a cover, which can move longitudinally relative to the lower bottom plate;

-The components used to lock the cover are installed to be longitudinally movable relative to the cover;

-The locking element is installed to move longitudinally between the unlocked rear limit position and the locked front limit position;

-The locking element is a horizontal rod used to lock the cover in the closed position. The locking element extends on the cover, and the locking element is properly installed on the cover to be in the unlocked limit position and the locked limit position Longitudinal movement between

-The cover has two parallel side uprights, the movable locking rod is a kind of transverse plate, installed so that it slides on the side uprights, and the opposite ends of the lateral uprights are upward along the lateral outside of the side uprights Bend, and then bend transversely into two facing horizontal protrusions, each protrusion constitutes one of the facing transverse conductive parts;

-The horizontal protrusions are aligned in the longitudinal direction;

-The opposite ends of the locking rod are bent horizontally inward;

-The conductive surface is horizontal, especially the lower surface of the horizontal protrusion is horizontal;

-Each of the fixed switch contact elements belongs to a switch contact piece carried by a connector;

-Each switch contact piece is fastened on the lower surface of the bottom plate adjacent to the connector;

-Each switch contact piece extends in a space, and the vertical direction of the space is upwardly bounded by the lower surface of the lower base plate of the connector, and downwardly bounded by the upper surface of the printed circuit board, which carries the base plate of the connector, The connector is raised relative to the printed circuit board through the spacer;

-The spacer is a vertical leg belonging to the bottom plate of the connector;

00810505.7 p.

-Each contact piece is arranged in the thickness direction of the connector and is carried by the lower bottom plate;

-Each of the fixed switch contact elements is a conductive gasket, which is made on the upper surface of a printed circuit board, and the printed circuit board carries the bottom plate of the connector;

-The electrical switch used to detect the locked state of the cover is a normally open switch, that is, when the cover is locked in the closed position, the switch is closed;

-The electrical switch used to detect the locked state of the cover is a normally closed switch, that is, when the cover is locked in the closed position, the switch is open;

-The electrical switch used to detect the locking state of the cover is a pulse switch, that is, when the locking element is locked or not, it changes state (on-off-on) at least twice;

-The cover has two parallel side uprights, the inner transverse surfaces of which face each other define a cavity for accommodating the card in the lateral direction, the cavity is opened longitudinally forward, and the smart card is longitudinally from front to back, parallel to the cavity The main plane and the direction of the cover are inserted into the cavity;

-The insulating lower base plate is bounded by a substantially flat upper surface, from which there are a series of vertical contact protrusions above the upper surface, each vertical protrusion is a free end of an elastically deformable signal contact, which is carried by an insulating support When the card and the cover are set together, each free end is forced to elastically deform downwards by the card, and enter the contact position. At the contact position, each melting end elastically supports the contact area and has an electrical switch. To detect the end position of the closing stroke of the cover at the contact position, the cover carries the smart card at the contact position. The switch has a contact piece made of conductive material and is fastened to an insulating bottom plate. The contact piece has at least one first branch. The branch extends in the direction opposite to the upper part of the free end of the elastically deformable contact piece and extends above the free end, and is not electrically connected to it. The elastically deformable contact piece is made of conductive material and is carried by an insulating support and has The free connecting end, the first branch of the switch contact, or the upper part of the free end, can be engaged with the lower surface of the card at the end of the cover closing stroke, so that the connecting end of the upper contact The electrical switch circuit between the switch contacts is established or disconnected, and the upper contact is the same as the signal contact of the connector;

-There is a time delay greater than or equal to 400 milliseconds between the change in the state of the stroke end detection switch and the change in the state of the signal contact. Description of the drawings The other features and advantages of the present invention will become clear after reading the following description. To facilitate understanding, please refer to the attached drawings, where:

00810505.7 p.

-Figure 1 is a perspective view showing a first embodiment of an electrical connector according to the technology of the present invention. In the illustrated state, the cover is in the open position, the smart card is installed in the cover, and a normally open detecting cover closing stroke point is provided NO type electrical switch, and normally open NO type electrical switch that detects the closure of the locking device;

-Figure 2 is a view similar to Figure 1, where the cover is shown in a partially closed position;

-Figure 3 is a bottom perspective view of Figure 2;

-Figure 4 is a view similar to Figure 2, where the cover is shown in the closed position and the locking device is in the unlocked position;

-Figure 5 is a bottom perspective view of Figure 4;

-Figures 6 and 7 are views similar to Figures 4 and 5, where the locking device is shown in the locked position;

-Figure 8 is a bottom plan view of the connector shown in Figures 6 and 7;

-Figure 9 is a side view viewed in the direction of arrow F9 in Figure 8;

-Figure 10 is an enlarged scale view of the detail at D10 in Figure 9;

-Figure 11 is a top perspective view illustrating the two contact pieces of the locking switch;

-Figure 12 is a top perspective view of the fusion sheet shown in Figure 11;

-Figure 13 is a bottom perspective view of the lower bottom plate constituting the contact holder;

-Figure 14 is a longitudinal cross-sectional view on an enlarged scale, illustrating an embodiment of a switch used to detect the end of the cover closing stroke. This switch is a normally open NO switch;

-Figure 15 is a top partial view viewed in the direction of arrow F15 in Figure 14;

-Figures 16A-16B to 22A-22B are a series of diagrams in two longitudinal sections of the connector, illustrating the operating procedures of the end of the stroke of the normally open switch and the steps of the movement sequence of the card and the signal contact;

-Figure 23 is a view similar to Figure 1, where the switch for detecting the end of the cover closing stroke is a normally closed NC switch;

-Figures 24 and 25 are views similar to Figures 14 and 15, illustrating the details of an embodiment of a normally closed NC type end-of-stroke switch;

-Figures 26A-26B to 31A-31B are a series of diagrams similar to Figures 16A-16B to 22A-22B, illustrating the movement sequence of the normally closed NC end-of-stroke switch shown in Figures 24 and 25;

00810505.7 p.

-Figure 32 is a view similar to Figure 5, this figure illustrates the first scheme of the first embodiment of the electrical connector according to the technology of the present invention, which is different from the latter (an annotation shown in Figure 5) in that it is normally open The design of NO type locking switch contact piece;

-Figure 33 is a bottom plan view of the connector shown in Figure 32, where the locking device is shown in an unlocked position;

-Figures 34 and 35 are views similar to Figures 32 and 33, where the locking device is shown in the locked position;

-Figure 36 is an enlarged perspective view of the two contact pieces of the locking switch of the connector shown in Figures 32 to 35;

-FIG. 37 is a perspective view of the contact piece shown in FIG. 36, which is a view viewed from another angle in another position;

-Figures 38 to 43 are views similar to Figures 32 to 37, illustrating another embodiment of the contact piece of a normally open lock switch;

-Figure 44 is a perspective view similar to Figure 4, illustrating a second embodiment of the electrical connector according to the technology of the present invention, this connector is together with the printed circuit board carrying it, and this connector has a normally open lock switch , The locking device shown is in the unlocked position;

-Figure 45 is a view similar to Figure 44, without a printed circuit board;

-Figure 46 is a bottom perspective view of the connector shown in Figure 45, without a printed circuit board;

-Figure 47 is a bottom plan view of the connector shown in Figure 46;

-Figure 48 is a side view of the electrical connector shown in Figure 45;

-Figure 49 is a detailed view of the detail at D49 in Figure 48 on an enlarged scale;

-Figure 50 is a bottom view similar to Figure 47, with a printed circuit board, which is represented by an outer contour;

-Figures 51 to 56 are views similar to Figures 45 to 50, in which the locking device is shown in the locked position;

-Figure 57 is a schematic perspective view of a printed circuit board carrying the connector shown in Figures 45 to 56;-Figure 58 is an enlarged perspective view of the locking device of the connector shown in Figures 45 to 56;

-Figures 59 and 60 are perspective views of the tightening device shown in Figure 58 viewed from two other angles;-Figure 61 is a perspective view of the locking device shown in Figure 59;

-Figures 62 to 67 are views similar to Figures 2 to 7, which illustrate the root

00810505.7 The third embodiment of the electrical connector according to the technology of the present invention, wherein the switch for detecting the end of the cover closing stroke is a normally open NO type, and the electrical switch for detecting the locking state of the locking device is a normally closed NC type;

-Figures 68 and 69 are views similar to Figures 11 and 12, this view shows the contact piece of the connector lock switch shown in Figures 62 to 67;

-Figure 70 is a bottom perspective view similar to Figure 67, this figure shows a third embodiment of the electrical connector according to the technology of the present invention, the switch of this connector is also a normally open NO type;

-Figure 71 is a bottom perspective view of the two contact pieces of the connector lock switch shown in Figure 70;-Figure 72 is a top perspective view of the two contact pieces shown in Figure 71;

-Figures 73 to 74 are views similar to Figures 52, 56 and 57, and these views illustrate an embodiment of a connector whose locking switch engages with a conductive surface on the upper surface of the printed circuit board;

-Figure 76 is a view of the connector fusion shown in Figures 73 and 74;

-Figure 77 is a perspective view showing a fourth embodiment of an electrical connector according to the technology of the present invention. The switch is in the closed position, the cover is not provided with a card, and the locking device is in the unlocked position. -Pulse lock switch for open program work;

-Figure 78 is a bottom perspective view of the connector shown in Figure 77; Figures 79 and 80 are views similar to Figures 11 and 12 or Figure 68 and 69, this figure shows the connector lock shown in Figures 77 and 78 The contact piece of the switch of the tightening device;

-Figure 81 is a bottom perspective view from another perspective, showing the connector shown in Figures 77 and 78;

-Figure 82 is a bottom view of the connector shown in Figure 81;

-Figures 83-84, 85-86, 87-88 and 89-90 are four sets of figures similar to Figures 81 and 82, each set of figures shows the successive occupation of the locking device during the locking operation Position; Figure 91 is a view similar to Figure 90, this figure shows a fifth embodiment of the connector according to the present invention, which differs from the above-mentioned embodiment in that it detects the closure of the locking device with a switch; and

-Figures 92 and 93 are views similar to Figures 79 and 80, and this figure shows the details of the contact piece of the connector lock switch shown in Figure 91.

00810505.7 First specific embodiment In the following description, the same, similar and similar elements and components will be represented by the same symbols.

In order to make the description and the claims easy to understand, the terms horizontal, vertical, up, down, front, back, etc. will be used in the description through non-limiting examples, especially in conjunction with certain figures. Various embodiments of the present invention, It will be described in the context of this application of electrical connectors, especially within the scope of the type of connector shown and described in detail in the document WO-A-98/52137. For the content of the document, the reader may appropriately Refer to it in order to understand its detailed structure and the settings of each component and its general operation.

Another example of this type of electrical connector has a relatively old design that carries a printed circuit board, which is shown and explained in the document DE-G-94.07486.0 · Figures 1 to 13 show An electrical connector 30 for the electrical connection of a card C, which is a contact smart card, has a longitudinally oriented parallel electrical connection area 34 on its lower surface 32, that is, the connection area is parallel to the card C Insert the connector direction I.

The connector 30 essentially includes a lower base plate 36 made of insulating plastic. The lower base plate 36 can also be made of other insulating materials. According to the existing design, the base plate serves as a support for a series of electrical contacts 38. These electrical contacts They are called signal contacts and are made of conductive materials. Here, the number of contacts is six, that is, three pairs of signal contacts are arranged in longitudinal alignment.

Each signal contact is oriented longitudinally and removed into the bottom plate 36. As an option, the bottom plate can be molded around the contact plate. Each stage piece 38 has a convex free contact end 40, which protrudes vertically upwards above the upper horizontal surface 42 of the bottom plate 36, so as to allow the contact piece to be connected to the corresponding area 34 of the card C when the card is in the connecting position. contact. Each contact piece has another free end 44 called a free connection end, which extends longitudinally to the front lateral end 46 or the rear lateral end 48 of the bottom plate 36, so as to allow the free end to be connected to the conductive trace of the printed circuit board PCB. The line (shown in Figures 45 to 57) is connected by soldering or brazing, and the bottom plate 36 is set on the printed circuit board through its horizontal lower surface 50.

The lower surface 50 may include struts 33 for positioning the bottom plate 36 on the printed circuit board and/or on the legs 37 of the raised connector. As can be seen in particular from FIG. 13, the bottom plate 36 is oriented in two vertical directions. The longitudinal parallel sides 52 and 54 are the borders.

00810505.7 Near the front transverse side 46, each longitudinal side 52, 54 has a locking protrusion 56, 58 which extends laterally outward, and its thickness is less than the thickness of the bottom plate 36 in order to lock A vertical gap is left between the lower surface 60.62 of the protrusion and the lower surface 50 of the bottom plate 36.

The length of the locking protrusion 56 extending forward is longer than the length of the other locking protrusion 58, and a vertical finger 66 is provided on the upper surface of the locking protrusion 56 for polarizing the card positioning and keeping the card in the cavity in the longitudinal direction. In the case where the card C is a "MICROSIM" type card, the rear lateral side 68 of the card has a 45° chamfer or bevel 70.

Therefore, the card can be held without using partitions or extending extra thickness laterally from the upper surface of the bottom plate, so that the bottom plate can be shortened.

There are two cylindrical connecting pin portions 72 and 74 at the rear of the bottom plate 36, and the connecting pin portions extend laterally outward from the longitudinal sides 52 and 54.

The connecting pin parts 72 and 74 are used to install the cover 76 on the bottom plate 36, and a receptacle for the card C is formed on the cover, and the connecting pin parts 72 and 74 are relatively connected to the bottom plate around the geometric axis coaxial with the connecting pin parts 72 and 74. 36 on.

The cover 76 has a generally frame shape and is molded from plastic. The cover essentially includes two parallel side risers 78 and 80, which are connected together by a horizontal platform in the shape of a flat rod 86 near the longitudinal front free ends 82 and 84 of the side risers.

The upper horizontal plane 88 of the flat rod 86 includes a mounting plane P for the card C, which is formed in a cavity where the upper surface 92 of the cover 76 is complementary to the shape of the card.

The rear transverse edge 87 has an inner groove 89 for passing the fingers 66, so the cover has holes or openings that allow the polarized fingers to pass through the cover. The front transverse edge has a recess 85 for easy handling of the card C when inserting the card, so as to ensure the full insertion and easy removal of the card.

The mounting plane P is in the same plane as the coplanar surfaces of the two facing guide rails. The lower surface 32 of the card C is set on this mounting plane. The guide rail is from the side facing the vertical plates 78 and 80 to the inside of the cavity. Extend laterally.

The lower surfaces 112 and 114 of the front of the riser are offset upward relative to the lower surface plane 10 of the cover 76, so that there is a vertical gap between the surfaces 112 and 114 and the lower surface 110 of the cover 76.

The structure of the cover with the shape of the frame and the central recessed part is passed through the back top with a very thin thickness.

00810505.7 The first plate 116 is reinforced, after which the upper plate extends through its lower surface, which is generally coplanar with the upper surface 92 of the cover 76 and essentially extends along the rear half of the risers 78 and 80.

There is a vertical gap between the lower plane of the upper plate 116 and the installation plane P. This gap is only slightly larger than the thickness of the card C to allow the card to be inserted from under the upper plate 116 in the insertion direction I of the card C until the card C is inserted. The front transverse edge 117 is abutted against the transverse edge 121 of the thickened block 122 that it faces, and the thickened block forms a narrow strip to strengthen the rear end of the upper plate 116.

When the card is fully inserted, the upper plate 116 extending above the front of the card C helps to keep the card C in the cavity to prevent it from falling off vertically upwards and helps guide the card C at the inserted end.

The vertical plates 78 and 80 are enlarged laterally inwardly near the rear end thereof, so as to form two supporting surfaces 126 and 128, and the supporting surfaces receive the connecting pin portions 72 and 74.

The cover 76 is locked on the bottom plate 36 by means of a locking device including a locking rod 140 in the closed position. This position is equivalent to the connecting position when the card C is installed.

The locking rod 140 is a thin metal plate that extends laterally above the upper surface 92 of the front half of the vertical plates 78 and 80 of the cover 76.

The upper part of the locking rod 140 is a plate-shaped portion 142 whose thickness is approximately equal to the thickness of the upper rear plate 116 and extends above the cavity. Therefore, when there is a card, it also extends above the rear of the card C, so Help keep card C in its cavity.

The upper plate-shaped portion 142 is bounded by two lateral sides, that is, the front lateral side 144 and the rear lateral side 146 are boundaries.

The locking rod 140 is installed so that it can slide longitudinally on the cover 76, and its rear limit position is defined by the abutment of the rear lateral side 146 and the stopper 153, which is arranged close to the front lateral side 152 of the rear upper plate 116 .

In order to ensure that the locking rod 140 is slidably guided on the cover 76, the upper plate-shaped portion 142 extends vertically downward from two vertical side cheeks 154 and 156 at the opposite side ends thereof, and the side cheeks extend along the risers 78 and 80 The vertically oriented lateral lateral sides 158 and 160 of the thinned front half extend. This thinned front half is bounded forward by two shoulders 162 and 164 in the longitudinal direction. The vertical front edges 166 and 168 of the side cheeks 154 and 156 respectively cooperate with this shoulder to define the locking rod 140 on the cover 76 Front limit position.

Outside the side cheeks 154 and 156, the upper plate 142 is guided by two opposite levels

00810505.7 The first and locking protrusions 172, 174 extend horizontally inward, the protrusions extend facing each other, each protrusion is horizontally bounded by the inner longitudinal edges 176, 178, and the protrusions 172, 174 are conductive and electrically connected Together.

Thus, each cheek 154, 156 together with the protrusions 172, 174 constitutes a long and narrow guide groove 180, 182 (see FIG. 58) for longitudinally guiding the locking rod 140 on the vertical plates 78 and 80 of the cover 76.

The upper surface 184, 186 and the lower surface 188, 190 of each protrusion 172, 174 are borders, and these surfaces are all horizontal planes (see FIGS. 58 to 61 in particular).

The protrusions 172 and 174 are provided to be able to slide along the lower surfaces 112 and 114 of the guide rails 98 and 100.

In the front limit position of the locking, the longitudinal front ends of the protrusions 172 and 174 extend opposite to the lower surfaces 60 and 62 of the locking protrusions 56 and 58 on the bottom plate 36, and in the rear limit unlock position , This protrusion is designed to allow the cover 76 to be opened around the joint axis XX.

After completing the operation of installing the electrical connector 30 on the printed circuit board PCB to which the device belongs, and fixing it by soldering, the use of the device provided with the connector 30 requires inserting the card C into the connection position. This connector is set in the closed and locked positions.

To this end, the user moves the locking rod 140 from the front (Figure 6) to the rear (Figure 4), so that the lid 76 can be rotated relative to the bottom plate 36 around the joint axis by lifting the lid, so as to make its free end It is exposed in front of the cavity 90.

A stop, such as an element, wall, or partition, extends before the front transverse edge of the connector, and the recess 85 allows the cover to be raised by using a nail or using the tip of a tool.

Even if there is no card C in the connector, the beginning of the stroke of opening the cover around the joint axis is preferably aided by elasticity.

At the card insertion position, if the card has been inserted correctly, the cover 76 can also be closed and locked, because the finger 66 extends to face the cut corner 70 (Figure 4), by returning the locking lever 140 to its front limit Position (Figure 6) to complete the locking operation. When the card C is positioned in the wrong direction, it cannot be locked correctly, and the cover elastically returns to its open position. It is possible to lock the edge only on the edge opposite to the polarized finger by applying extremely strong pressure on the cover with the card, but it is impossible

00810505.7 The other edges are locked first, so the locking operation is not completed and incorrect.

In the closed position (Figures 4 to 9), the cover 76 carrying the card C and the locking device 140 surrounds and on the bottom plate 36 it protects, and the metal locking rod 140 additionally "shields" the card C.

Hereinafter, the locking lever 140 will be referred to as a locking device (lock). According to the technology of the present invention, the first embodiment of the electrical switch function used to detect the locking position of the locking device will now be described. The locking position is shown in FIG. 6 Particularly shown in 10.

In this first embodiment, the locking switch is normally open, that is, when the locking device is not in the locked position, the electrical switch is considered to be open, and when the locking device is in the locked position, the electrical switch is considered to be open. It is considered closed.

According to one aspect of the present invention, the locking switch includes a metal locking device 140 itself and two locking switch contact pieces 200 and 202. The switch contact pieces are shown in detail in FIGS. 11 and 12, and the metal locking device 140 Through the lower protrusions 172 and 174, more specifically, the lower surfaces 188 and 190 of the lower protrusions 172 and 174 are engaged with the switch contact piece.

Each switch contact piece 200 and 202 includes a long and narrow body shaped as a horizontal bar 204, 206, which extends horizontally adjacent to the lower surface 50 of the bottom plate 36, and the switch contact piece passes through the stopper on each switch contact piece 200, 202 The sub-device is permanently installed on the bottom plate. The detent device is arranged in a pair of holes 208, 210 and 212, 214 at the front and rear of the switch contact. Each hole is provided with a detent tab 216, the diameter of the hole and the detent The size of the sub-protruding piece 216 is set to allow the switch contact pieces 200 and 202 to be mounted on the cylinder of the leg 37, so that the upper surfaces of the horizontal bars 204 and 206 are vertically upwardly supported and abut against the bottom of the facing bottom plate 36. On surface 50.

Near the front free end of each switch contact piece, there are contact protrusions 218, 220, which extend laterally outward, and extend generally horizontally in a plane that is offset vertically upward relative to the plane of the horizontal bars 204, 206 . In the sense of the present invention, the upper surface 222, 224 of each lateral contact protrusion constitutes the conductive surface of each switch contact piece 200, 202, and for this purpose, the switch contact piece has contact bosses 226, 228. The boss vertically protrudes upward and is intended to be engaged with the lower surfaces 188 and 190 of the lower protrusions 172 and 174 of the metal locking device 140.

On the side of each lateral contact protrusion 218 and 220, each switch contact piece has a connecting protrusion 230, 232, and the connecting protrusion extends longitudinally forward and vertically downward to make it

00810505.7 The first position is longitudinally aligned with the connection tab 44 of the signal contact, and is at the same height as the connection tab, so that it can be soldered on the conductive trace of the printed circuit board (not shown) facing it.

The longitudinal positioning of the lateral contact protrusions 210 and 220, especially the longitudinal positioning of the contact bosses 226 and 228, is such that when the locking device 140 is in the unlocked rear position, the contact bosses are longitudinally biased forward, Therefore, the lower protrusions 172 and 174 of the locking device 140 have no electrical contact with the switch contacts 200 and 202.

Now the operation of the normally open (NO) lock switch will be described with reference to Figures 2 to 13.

Starting from the position shown in Figures 2 and 3, where the locking device 140 is in its unlocked rear position, the cover 76 is partially opened, the card C is set in the cavity of the cover 76, and the user completely closes the cover 76 Start so that it enters the position shown in Figures 4 and 5.

As described above, and due to the longitudinal positioning of the lateral contact protrusions 218 and 220, no electrical contact occurs between these elements, and the lock switch is always on.

In order to lock the cover 76 in the closed position, the user moves the locking device longitudinally forward to reach the locking position shown in FIGS. 6 and 10, in which the lower protrusions 172 and 174 of the locking device 140 pass through its lower surface 188 and 190 are in contact with the contact bosses 226 and 228 of the lock switch contact pieces 200 and 202.

Due to this electrical contact, the switch circuit is electrically closed, that is, the two conductive traces connected to the connecting tongues 230 and 232 on the printed circuit board are electrically connected to each other through the metal locking devices 140, 172, and 174.

In this way, the locking of the closing and locking position of the locking device 140 of the cover 76 on the contact-maintaining bottom plate 36 can be checked in a reliable manner.

If the card is inserted incorrectly into the electrical connector, this contact cannot be established on the one hand, and even if the other side is locked, the lock switch cannot be closed as a result.

If the user moves the locking device 140 to its locked front position without closing the cover 76 before, naturally he cannot lock the cover, and his actions on the locking device will not generate any electricity. The signal causes the interaction between the lower surfaces 188 and 190 of the lower protrusions 172 and 174 of the locking lever 140 and the switch contacts 200 and 202 only when the cover is in the closed position.

In addition, since the design of the existing cover 76 has its locking rod 140, if the user closes

00810505.7 The first locking device 140, that is, before closing the lid, the lid cannot be completely closed by moving the locking lever forward in the longitudinal direction into its locking position, and the lid is partially closed so that there is no signal at the locking switch, and the lid is still Keeping it open prevents the lower protrusions 172 and 174 from reaching the contact bosses 226 and 228 vertically.

Now, the switch for detecting the end of the stroke when the cover 76 is closed will be described.

This switch belongs to the existing common design switch, which is shown and explained in French Patent Application No. 98/11788 filed on September 22, 1998.

In the first example of the switch for detecting the end position of the closing stroke of the cover 76 shown in FIGS. 14 to 22A and 22B, this is a normally open NO switch.

In the embodiments shown in FIGS. 1, 14 and 15, three pairs of contact pieces constitute a conventional signal contact piece, that is, the contact piece can be engaged with the contact area of the card C, and the fourth pair of contact pieces, that is, in FIG. 1 The pair of contact pieces on the right are used to form a switch, which is used to detect the presence of the card C in the contact or connection position and to detect the end of the closing stroke of the cover 76.

In the existing method, the corresponding contact pieces constituting the end-of-stroke switch are the same as other signal contact pieces in all aspects, and the shape and structure thereof, as well as the method of mounting on the insulating support are the same.

Except for the two traditional contact plates 38 and 38, which are respectively the front contact plate and the rear contact plate, here is a normally open end-of-stroke switch, which essentially includes a switch plate 820, which uses cutting and It is made by bending a sheet of conductive material.

It can be seen from FIGS. 16A and 16B that the rest position of each signal contact piece and the front contact piece 38, together with the end-of-stroke switch, is such that the free contact end 40 of the convex shape is an inverted spoon shape has an upwardly oriented convexity, The protrusions are vertically above the plane of the upper surface 42 and the ends of these protrusions are located at the same height.

For this purpose, in the example shown, each free end is pressed against the protruding end of each contact piece to elastically support contact with it, and the support abuts against the facing surface of the corresponding edge of the insulating support hole or cavity. , This insulating support is installed with the corresponding free contact end, and allows the protruding end to protrude above the support portions 36 and 42.

The switch contact piece 820 has an overall shape elongated in the longitudinal direction, and has a sheet-shaped central fastening portion 840, which is fastened to the upper surface 42 of the bottom plate 36 by heat crimping the boss 880.

00810505.7 In the rest state shown in Figure 14, a normally open switch is formed. The front longitudinal branch B1 of the switch contact piece 820 faces the free contact end 40 of the corresponding contact piece 38, and extends above it but does not make electrical contact with it. , And the rear longitudinal branch B2 of the switch contact piece is in permanent electrical contact with the curved end 40 of the bent contact piece 38, which is arranged vertically below the upper surface 42.

The front branch B1 has a curvilinear profile complementary to the contact end 78, so that its convexity is oriented toward-d. The front branch B1 protrudes vertically above the plane of the upper surface 42, and can be elastically deformed downward, forming a kind of curved beam. In order to facilitate the free contact end 40 of the corresponding contact piece 38 to contact and be supported thereon.

Under the action of the lower surface of the card C, the current branch B1 comes into contact with the contact end 40. The deformation of the front branch first enters the termination, and then the contact end also bends vertically downward. The interaction between the contact surfaces of these elements is still The switching phase guarantees a self-cleaning effect_ο The contact point P1 between the current branch B1 and the contact end 40 has been established, and the stroke end switch circuit is closed, that is, there is electrical continuity between the two contact pieces 38 and 38 and the connection ends 740 and 740, This contact piece together with the switch contact piece 820 is used to form an end-of-travel switch.

In particular, it can be seen from FIG. 15 that the longitudinal extension length of the asymmetric fixed contact piece 820 of the switch is approximately two-thirds of the spoon-shaped end 40 of the contact piece 38, so as to be able to use the contact piece (with the signal contact piece and the switch contact piece). Pieces consistent), this contact piece has the maximum possible protrusion height above the upper surface 42, in other words, at the normal preload position, which is 0.75mm._o The flexible profile on the side of the moving contact piece is similar, but its thickness has been reduced by about 0.1mm, so that the moving contact piece has a pre-pressed position to allow the switch contact piece 820 to be above the plane 42 when the switch contact piece 820 is in the rest position. When the height is about 0.55 mm, there is a gap of about 0.2 mm under the flexible branch B1 of the switch contact.

This 0.55mm protrusion is limited in such a way that when the cover provided with the card C rotates around the joint axis, the curve of relative movement between the traditional signal contact piece and the moving contact piece 38 of the end-of-stroke switch is the same as the following The movement curve of the normally closed NC switch seen is the same. This is because after the flexible branch B1 is deformed by 0.2mm, that is, when the top of the upper surface of the contact piece is at a distance of about 0.55-0.2=0.35mm from the plane 42 (in the moving contact piece and the flexible part)

00810505.7 The difference between the lower surface of the first branch), the flexible branch B1 makes physical contact at the contact end 40 of the moving contact piece 38.

In FIGS. 16A and 16B, the cover 76 is opened, that is, the signal contact piece 38 is not in contact with the chip on the card, and the normally open NO type end-of-stroke switch is opened.

In Figures I7A and 17B, the back row of the signal contacts 38 just touches the chip on the card, and the deformation of these signal contacts 38 has not yet begun; the front row of the signal contacts has not yet contacted the card, and the flexibility of the end-of-stroke switch Branch B1 has no contact either, it is still open.

In FIGS. 18A and 18B, the cover 76 is still in the process of closing, the front left row of the signal contacts 38 has just been touched by the card C, and the rear row of signal contacts, that is, the deformation of the right row of contacts in FIG. 18A is in its final state. The state of two-thirds of the deformation. The flexible branch B1 of the end-of-stroke switch has not been touched as shown in Figure 18B. It can be seen from FIG. 18B that there is a gap of 0.2 mm between the lower surface 32 of the card and the top of the flexible branch B1. This gap, plus the gap existing between the lower surface of the flexible branch and the corresponding key 40, makes it possible to use An offset or delay is established in the closing sequence of all the signal contacts 38 and the end-of-stroke switch. Assuming that the user closes the cover 76 by hand at the fastest speed, this delay will be greater than 400 microseconds.

In FIGS. 19A and 19B, the cover 76 is still in the process of closing, the rear row of the signal contacts is still in the process of establishing contact with the chip on the card, that is, they are in a state of three-quarters of their total deformation, and The flexible branch B1 of the end-of-stroke switch just touches the lower surface of the card C, that is, the vertical downward deformation of the flexible branch B1 has not started yet, so the switch is still open.

In Figures 20A and 20B, the cover 76 is still in the process of closing, the back row of the signal contacts is closed to its final deformed state, the front row of the signal contacts is in the process of establishing contact with the chip on the card, the stroke end switch The moving contact piece is just in contact with the flexible branch. This flexible branch is in a state of one-third of its total deformation. The deformation of the moving contact piece 38 has not yet begun, and the moving contact piece still occupies its pre-stress stop determined by its protrusion. position.

In FIGS. 21A and 21B, the cover 76 of the connector is in the closed position, and a smart card is provided in the cavity of the cover. This card C is a minimum thickness card according to the standard that defines a card, that is, a minimum thickness of 0.68 mm in thickness. . It can be seen from Fig. 21A that the two rows of signal contacts have obtained their final deformation, and the movement contact piece 38 of the end-of-stroke switch has also reached its final deformation.

00810505.7 The first deformation, that is, the switch is closed, and the electrical connection between the connecting tabs 740 and 740, is established.

Figures 22A and 22B are consistent with the above two figures. The difference is that the connector shown is equipped with a card whose thickness is the largest according to the standard, and the card thickness is 0.84mm. The increase in the thickness of the card affects the operation of the signal contact and the end of the stroke switch The operation has not changed.

In the normally open NO setting of the end-of-travel switch, the top 40 of the fixed contact piece 38 of the switch is essentially below the level of the upper surface 42 of the bottom plate 36 to prevent it from contacting the smart card and thus avoid opening the switch again .

For safety reasons, the fixed branch B2 of the switch contact piece 820 can be slightly narrow and long, so it is always slightly above the top 40' of the fixed contact piece 38'. Therefore, in the case of being stuck in contact, the end of the fixed branch B2 will undergo a slight downward deformation, driving the fixed contact piece 38\40 without loss of supporting force, so the electrical contact between the two elements 40 and B2 There is no loss.

Naturally, if there is no card C in the cavity of the cover 76, closing or opening the cover 76 will not have an effect on the switch, and the electrical processing circuit analyzes the presence of the card in the same way as processing the closure or non-reopening of the cover 76.

The above-mentioned 400 microsecond time delay between establishing signal contact and actuating the end-of-stroke switch, whether it is normally open or normally closed, corresponds to the fastest closing speed state allowed by human hands.

When the cover 76 is opened, the time delay between the release of the actuation of the switch and the contact of the disconnect signal must also be equal to or greater than 400 microseconds. At this time, it is in the state of opening at the fastest speed. This state corresponds to the lock The tightening rod 140 has been unlocked in advance, and the more connected cover 76 is kept pressed against the bottom plate 36 with fingers, and the cover 76 with the card is then attached to the signal contact piece and the switch that elastically abuts on the lower surface of the card. Under the combined elastic action, that is, by releasing their spring action, they rotate in the opening direction around the connecting axis.

Such a minimum time delay of 400 microseconds ensures that the user is allowed to completely safely install or remove the smart card from the card and the electronic circuit of the system. The system accommodates the connector/smart card sub-assembly while the electrical appliances are still live during these operations.

In fact, on the one hand, due to advances in extending the autonomy of batteries, on the other hand

00810505.7 First, due to the reduced energy consumption of the latest electrical appliances (especially mobile, GSM, and portable phones), it can now be believed to have more than twenty days of autonomy. This improvement in autonomy allows electrical appliances to be made into rechargeable batteries that can be used without disassembly or disconnection, in order to simplify manufacturing, reduce costs, reduce the size and weight of electrical appliances. In this case, regardless of whether the electrical appliance is charged or not, the user has an entrance to the smart card connector. Unlike existing portable phones, this type of phone usually needs to remove the battery pack in order to reach the electrical connector. mouth.

Another situation where electrical appliances are still live is where the batteries are connected by wires and a shutter needs to be raised to reach their entrance. However, in this case, there is still a risk. At this time, the user has to remove the battery to obtain the access port of the smart card connector in order to unload or reinstall the smart card without disconnecting the battery from the wire.

In the embodiment shown in FIGS. 23 to 31B, the switch for detecting the end of the closing stroke of the cover 76 is a normally closed switch.

An example of the overall design of this type of switch is shown and explained in the above-mentioned French Patent Application No. 98/11788.

The design of the end-of-stroke switch shown in these figures is generally of the same type as the first embodiment of the above-mentioned normally open switch.

Therefore, the switch contact piece 820 is a symmetrical design and has two branches B1 and B2 opposite in the longitudinal direction, and each branch is engaged with the contact ends 40, 40 of the corresponding contact pieces 38, 38through its free end.

The two branches B1 and B2 of the switch contact piece 820 generally extend in a horizontal plane. Here, both are rigid or fixed, that is, one or both of the branches B1 and B2 of the switch contact piece 820 of the switch They are not subject to elastic deformation.

It can be seen from Figure 24 that this is because the insulating support 36-once installed, the shape and position of the switch piece 820 is such that the convex contact ends 40, 40 of the contact pieces 38, 38,^fCombine with the switch contact piece 820 to form an elastically abutting end-of-stroke switch, so that the convex part contacts the branches B1 and B2 so as to form two semi-permanent contact points, P1 and P2 when there is no card C .

The shape of the fixed branch B1 and the corresponding contact pieces 38, 40 is like this, protruding vertically upward

00810505.7 The curved upper surface of the first spoon-shaped portion 40 has a height that protrudes from the insulating upper surface 42 of the support base 36 equal to 0.35 mm, and the curved upper surface of the spoon-shaped portion is located below the upper surface 42.

Then, when the cover 76 is closed, the lower surface 32 of the card C engages with the upper surface of the convex end 40 so that its free end is elastically bent downward, thereby disconnecting the pre-established between the corresponding contact pieces. The output terminals 740 and 740' are connected to form a kind of switch, that is, to open the contact P1.

When the contact piece and the fixed contact piece branch B1 are elastically abutted at point P1, under the prestressed state, the 0.35mm gap height of the contact piece 38 contacting the end 40 is determined in such a way that the moving contact pieces 38, 40 are large enough Pressure acts on the fixed contact branch B1 of the end-of-stroke switch to ensure stable electrical contact resistance in the closed position of the switch, that is, when the lid of the dumpling is opened, or when there is no card, when the lid is carried When the card is removed and closed, regardless of the thickness of the card defined by the corresponding standard, the contact piece is actuated by the smart card. The permanent contact at P2 is located on the XX side of the junction axis, just like the normally open NO end-of-stroke switch described above.

Figures 26A-26B, 27A-27B. 28A-28B, 29A-29B, 30A-30B and 31A-31B show the operating sequence of a normally closed NC switch, which corresponds to Figures 16A-16B, I7A-17B, 18A-18B, 20A-20B, 21A-21B, 22A-22B shows the operating sequence of the normally open NO switch.

In an aspect of the present invention that is not shown, it includes electrically connecting the fixed contact piece of the end-of-stroke switch to the connector directly, or connecting it to one of the branches of the locking switch through a printed circuit soldered on the connector , The lock switch then becomes the common electrical contact of the end-of-stroke switch and the lock switch, so as to save one or two contact pieces.

It should be pointed out that in the first embodiment of the above-mentioned normally open NO lock switch, since the switch contacts 200 and 202 are under the insulating support surface of the bottom plate 36, legs need to be provided so as to be opposite to the upper surface of the printed circuit board. The bottom plate is raised, so this design, together with the closed cover, increases the overall height of the connector at the installation position on the printed circuit board of the electrical appliance.

The embodiments shown in Figures 32 to 37 can remedy this shortcoming.

00810505.7 First, with the help of another design of the switch contacts 200 and 202, the legs can be omitted, so that the bottom plate 36 is directly placed on the upper surface of the printed circuit board.

This design can also solve the difficulty of making it difficult to co-planar the connections to be soldered on the printed circuit board.

In particular, it can be seen from FIG. 36 that the shape of each lock switch contact piece is a hairpin shape with a vertical contact axis, that is, the active contact branches 218, 220 that define the outer lateral conductive surfaces 222, 224, which have The curved front free ends of the conductive surfaces 222, 224 extend in a vertical plane, and the conductive surface is located between the inner lateral surfaces of the side uprights 78, 80 facing the cover 76 and the outer lateral surfaces of the sides 56, 58 facing the bottom plate 36 Exist in the free space.

Each active branch or protruding portion 218, 220 is pivotally connected to a vertically connected and fixed narrow band 204, 206 with its rear end. The narrow band passes through positioning and fastening forks 240, 240, which are installed in the corresponding cavity of the bottom plate 36. 242 extends vertically downwards. Finally, each positioning and mounting strip 204, 206 extends at its front end through an electrical connection protrusion 230, 232, which extends laterally inward in a horizontal plane, which is between the corresponding portions of the lower plane of the insulating base plate 36 So that the electrical connection protrusion and the other connection protrusions 44.740 and 740 are in the same horizontal plane.

According to this design, when the locking operation is performed, the locking lever 140 uses the active branches 218-222 and 220-224 of the switch contact pieces 200 and 202 to form the front transverse edge 173 of the hypotenuse on the lower protrusions 172 and 174. 175, then in the locked position, when the locking device 140 is in its locked forward position, the active branch elastically contacts the sides 176 and 178 of the lower protrusion.

Figs. 38 to 43 show another form of a normally open NO type lock switch using switch contact pieces 200 and 202. The form of this switch as shown in Figs. 32 to 37 also has a reduced thickness.

The difference between this form and the above form lies in the design of the locking switch contact piece. This contact piece is arranged at the same position of the connector and is fastened in the same manner by the fastening forks 240 and 242. This fastening fork has Horizontal connection protrusions 230 and 232 that are bent laterally inward.

On the other hand, the active branches 218, 220 are connected to the connecting branches or narrow strips 204, 206 in order to extend horizontally and longitudinally forward, so that the front free end can be bent vertically downwards to form an inclined shaped connecting part 250, 252, using this molded connection part, the front lateral edges 177, 179 of the lower protrusions 172 and 174 can be joined during the locking operation.

00810505.7 The active conductive surface of each active branch 218, 220 of the first switch contact 200, 202, in this case, is in the locked position, especially as seen in FIG. 40, the active branch 218, The horizontal lower surface of 220 is on the lower protrusions 172, 174 of the locking device 140, that is, it elastically contacts the corresponding upper surfaces 184, 186 of the lower protrusions 172, 174 of the locking device 140 vertically downward.

An embodiment of a connector is now described with reference to Figures 44 to 61. The connector is provided with a two-position lock switch that also reduces the height, that is to say, it does not require a leg to raise its height, and it also includes Without the switch contact piece, the locking switch function is still realized by the metal locking device 140 as described above. The lower protrusion of the locking device is bent laterally inward, and it is directly conductive with the long surface of the printed circuit board PCB at the locked position. The trace is in contact with the two short films.

For this purpose, as can be seen more particularly from FIGS. 58 to 61, each of the protrusions 172, 174 extends longitudinally rearward through the elastic contact branches 254, 256. This contact branch extends horizontally, but the horizontal plane is relative to the lower protrusion 172. The common horizontal plane of the lower surfaces 188 and 190 of 174 and 174 is slightly offset vertically downward, in order to apply a vertical downward elastic thrust to the upper surface 258 of the printed circuit board PCB, so as to ensure that the active branches 254 and 256 and the upper surface Good frictional contact between 258.

More specifically, the upper surface of the printed circuit board PCB has a "long" longitudinal conductive trace 262, and the elastic contact branch 256 is in permanent contact therewith, that is, regardless of the longitudinal position of the locking device 140. On the other hand, the upper surface 258 has two consecutive conductive sheets, namely the rear conductive sheet 260 and the front conductive sheet 261, and the elastic contact branch 254 can be joined with the conductive sheet.

In the closed position of the cover 76 and the unlocked rear position of the locking device 140 (FIG. 50), since the contact piece branches 254 and 256 are in contact with the rear conductive piece 260 and the long conductive trace 262, respectively, the first of the lock switch The switch circuit is closed in this first position. By moving the locking device 140 forward to lock, the contact piece branch 254 leaves the rear conductive piece 260, and then reaches the forward locking position of the locking device 140 (Figure 56), so that the front conductive piece 261 will lock the switch The other switch circuit is closed.

Therefore, if the locking device does not occupy any of the two positions, that is, if the processing circuit does not detect one of the two positions 262-260 or 262-261

00810505.7 The first position, and the cover is not closed, can be confirmed by the signal contact piece, or the locking device is in the longitudinal middle position, the above line can also be used to identify this situation by analyzing the signal contact piece.

According to other schemes (not shown), a lock switch can be simply manufactured. This switch is a simple normally open NO type or normally closed NC type. Only by arranging two longitudinally aligned and longitudinally positioned conductive strips, the contact The sheet branches 254 and 256 are simultaneously connected with the two conductive sheets at the end of locking (NO switch) or during the closing process before locking (NC switch).

Figures 73 to 76 show an embodiment of the connector shown in Figures 44 to 61.

In this solution, the long conductive trace 262 is adjacent to the two conductive sheets 260 and 261 and is laterally aligned with the lower protrusion 174 of the locking device 140.

In order to engage these conductive elements while still identifying the two longitudinal positions of the locking device, the lower surface 190 of the lower protrusion 174 is provided with a contact piece 244, which has two adjacent parallel branches, one of which is branch 246 It is always in contact with the long conductive trace 262, and the other branch 248 is designed to be engaged with one or which of the two conductive sheets 260 or 261 according to the longitudinal position of the locking device 140, and the locking device is in its The conductive sheet 244 mounted on it by brazing or folding is driven during the movement.

Another embodiment of a connector with a normally closed lock switch is shown in FIGS. 62 to 69.

The design of this connector is generally similar to the first embodiment shown in Figures 2 to 13, that is, it includes a pair of switch contacts 200 and 202 of the same design, which are horizontally arranged adjacent to the elevated On the lower surface of the bottom plate 36, the pair of contact pieces have two outer horizontal contact protrusions 218 and 220 as described above, and each contact protrusion has a contact boss 226 and 228.

Only the longitudinal positions of the contact protrusions 218 and 220 are different from the case of the normally-open ON type lock switch, that is, the contact protrusions are longitudinally biased backwards, so that when the lock switch is in the unlocked rear part When the cover is in the closed position, it is aligned with the lower surfaces 176 and 178 of the lower protrusion of the locking device 140. The metal locking device 140 then establishes an electrical connection between the protrusions 218 and 220, thus connecting the two switch contacts 200 An electrical connection is established between and 202.

The metal locking device starts from this normally closed state of the locking switch, in order to lock the cover, along the vertical

00810505.7 Move forward in the first direction to open the lock switch to indicate the lock of the cover.

Naturally, if this normally closed NC lock switch is compared with a normally open NO lock switch, it can be seen that it is impossible to directly distinguish between the two same electrical states, namely the open state, but this open state corresponds to two different That is, one corresponds to the cover being opened and the other corresponds to the cover being closed and locked.

Finally, Figures 70 to 72 show another embodiment of an electrical connector, which has a normally open NO type lock switch similar to that shown and described in Figures 1 to 13.

The difference in the solution of this embodiment lies in the design of the electrical connection device used for the contact pieces 200 and 202. Comparing Figures 70 to 72 with Figures 5, 11 and 12, it should be pointed out that this is because the conductive sheets 230 and 232 of the electrical connection locking switch contact sheet 200 202 are not directly connected to the conductive traces on the printed circuit board. Instead, its designed to be adjacent to and bend vertically upwards, and to engage with two standard contact pieces 38, that is, these contact pieces are the same as the signal contact piece 38, as shown in Fig. 70. With this design, they always remain Contact and maintain a permanently bent state, that is, like the fixed contact piece B2 of the normally closed end-of-stroke switch shown in Figures 24 and 25.

Therefore, it is the connection protrusion 40 of the contact piece 38, which ensures electrical connection with the printed circuit boards of the two locking switch contacts 200 and 202. Therefore, all output terminals or connection protrusions are the same and are in the same height. In this design, naturally, there is no switch for detecting the end of the closing stroke of the cover in the above-mentioned form.

The operation diagram of the safety device with NC locking switch and a relatively connected end-of-stroke switch is as follows:

1- Close and lock the connector with the card.

1. 1- Close the lid:

I. 1. 1 If the card is not positioned correctly, when the angle of rotation is to close the cover, the end-of-stroke switch that rotates around the axis of the dumpling joint cannot be actuated because the contact-carrying polarized finger prevents the card from being fully supported on the side. The side joint fusion part, the side edge includes a locking finger.

For double safety, for the same reason, the locking switch cannot be locked on the side including the locking finger.

00810505.7 No. => The electronic device of the electrical appliance is therefore not activated.

1. 1.2 If the card is correctly positioned, the cover is closed at the angle of rotation, the end of the stroke of the rotation around the joint axis is actuated, and the lock switch is closed, generating a "rising edge (pulse)":

---------------------------C ΐ

Ο-------------------=>The electronic devices of electrical appliances are not always activated.

1. 2- Lock the cover tightly: Then there are two situations:

1. 2. 1 The operator releases the cover that rotates around the axis of the dumpling joint without locking the locking device: When the cover is opened by the rotation angle, the end-of-stroke switch is deactivated and the locking switch is opened, generating a "falling edge (pulse)" ":

C--------------------I

--------------------------ο => The electronic device of the electrical appliance is not always activated, because the "end of stroke" indicating the angle of rotation to open the cover "The switch is deactivated (and the cover works before the signal contact sheet has left the conductive sheet on the card).

It should be pointed out that if the lock switch is opened before the end-of-travel switch, the electronic device of the electrical appliance will be activated for a short time, and then it will be deactivated by the signal from the end-of-travel switch immediately before the contact piece leaves the conductive sheet on the smart card. .

1. 2. 2 Before the cover has been released, the operator correctly and completely locks the cover rotating around the closer axis through the locking device: the closer end of travel switch is always actuated (first state) to lock the switch turn on,

00810505.7 first produces a "falling edge (pulse)" (second state):

C------------------I

.........................ο ==>The electronic device of the electrical appliance is activated (the two states are combined).

It should be noted that since the NC switch is turned on during operation, there is no risk of failure, and even its performance deteriorates over time (in such an application scenario, where the card is rarely removed, priority is given to operation Instead of security).

2- Unlock and open the connector with the card.

2.1Unlock the lid and the stroke end switch connected to it is in the actuated position.

The locking device is unlocked and the NC locking switch is closed, generating a "rising edge (pulse):"

--------------------------C t

ο------------------=>The electronic device of the electrical appliance is deactivated before the cover is completely unlocked.

2. 2- Open the cover: Then there are two situations:

2. 2.1 The operator locks the locking device again before releasing the pressure on the cover, so the cover is not allowed to turn to its open angular position around the connecting axis: its configuration is still like 1.2.2.

=>The electronic device of the electrical appliance is activated.

2.2.2 The operator releases the pressure on the unlocked cover and the cover opens in an angular direction: its configuration is also the same as 1.2.1.

=>The electronic device of the electrical appliance is still not cleaned.

00810505.7 First, if the smart card is rarely removed from the electronic appliance (such as portable phones, GSM phones, etc.) this type of NC lock switch is advantageous.

The performance of the switch (this switch is rarely actuated) will deteriorate over time, and the operation of the device will not stop. The relatively connected end-of-stroke switch is in a safe mode to ensure that the electronic device of the device is protected when the connector is opened, even if the locking switch is no longer operating.

When the card is put back into the connector, and when the locking device is locked again, a complete "opening/closing" cycle of a contact-type locking switch is already performed: the self-cleaning effect of this cycle, With every opportunity to make the lock switch better, the electronic device of the electrical appliance will be actuated, and the operator does not know that the lock switch is deteriorated due to the aging effect of the seldom-used contact switch.

If the lock switch fails, it has been seen that there is no danger to the electronic device because of the end-of-travel switch. Conversely, the end of the stroke and the failure of the switch will cause doubts about the safety of electrical appliances and electronic devices. Therefore, it is conceivable to ensure safety in such an unfavorable situation, because the electronic devices of electrical appliances can detect the presence of smart cards with the help of signal contacts (however, without a switch, it is impossible to avoid these pre-opening).

If the contact type end-of-stroke switch is NO type, any failure of the latter will be detected immediately by the electronic device of the electrical appliance "At this position, the card is supported on the contact piece", because when the signal contact piece contact has been established, The NO switch must be closed. If a failure of the end-of-stroke switch is detected during operation, that is, during the period when the card is correctly installed and the locking device is correctly locked, the electronic device can simply record this information and enable the electronic device to " Actuation" until the next "rising edge" pulse of the NC lock switch arrives, that is, when the lock is released for the first time, the re-actuation of the electronic device is therefore prohibited, because the "end of stroke" switch will give "No card" information (the configuration situation will then be equivalent to the situation shown in 1.1.1).

If the contact type end-of-stroke switch is NC type, any failure of the latter will be immediately detected at the "no card" position or at the "card not supported on the contact" position, because when the signal contact has been established When, the NC switch must be closed. If the end-of-stroke switch fails during operation, that is, the electronic device will not detect this failure and keep it active during the period when the card is correctly installed and the locking device is correctly locked.

00810505.7 First until the next "rising edge" pulse of the NC lock switch arrives, that is, at the first lock: it is at this point that danger occurs.

There are two possible situations: The operator releases the pressure from the unlocked cover. The cover turns to the position where it opens in the angular direction around the connecting axis; the lock switch is turned on, because the stroke end switch does not work, the read "card exists" is wrong, and it is still in the configuration state shown in section 1.2.2. There is no additional protective measure in the state, and an instruction will be given to reactivate the electronic device, so there is a risk of damage to the electronic device.

Recommended additional protective measures to avoid this risk include, when the "falling edge (pulse)" used to close the locking device is within a fixed time, such as within a few seconds, by turning on the "falling edge" of the NC-type end-of-stroke switch. Edge (pulse) to avoid activating electronic devices.

The operator locked the locking device again without releasing the pressure on the cover. Although there is no risk with this structure, the electronic devices of electrical appliances will not be reactivated due to additional protective measures (because the "falling edge" pulse for the lock switch will not be exactly before the "falling edge" pulse for the stroke end switch ).

It is recommended to use the NO-type locking switch for manufacturers of appliances (such as appliances for processing financial transactions, etc.) where safety is prioritized and risk is not allowed, even if it is a one-minute risk.

The "locked" position of the locking switch is only possible when the locking device is properly locked. The end-of-stroke switch of the dumpling is essentially used to detect the presence or absence of the card (although this function can be provided by the electronic device through the signal contact piece), but it can also be used as a double safety device, for example in the extreme case of introducing impurities , These impurities cause a short circuit between each spoon part of the two contact pieces of the locking switch and the instant lock when it is opened.

The various combinations of switches are as follows.

The combination of "NO-type locking switch/NO-type comparative stroke end switch" is the configuration that guarantees the highest safety. The combination of "NC Locking Switch/NC Connecting Stroke End Switch" is the best balance of "operating comfort/safety".

NO type or NC type "comparison stroke end" switch can be used to give a unique level of safety by itself:

00810505.7 p.

-If priority is given to safety, use the NO type (but a strong impact in operation may cause a short separation of semi-permanent contact and trigger failure of the electronic device, which is completely safe but annoying for the user);

-If priority is given to operating comfort, use the NC type.

On the other hand, these "dumpling end-of-stroke" switches do not allow to verify that the connector is properly locked, but it is necessary for certain operations such as financial transactions (in this case, not only the electronic device must be manufactured safely). , And the operation must be safe and reliable).

NO type "lock switch" (this type of switch is more expensive and in some cases larger than the end-of-stroke switch of the dumpling) can also be used by itself, as long as it can detect the "card" by the signal contact exist". This allows the eight contacts of the contact holder to be used as signal contacts. The NO style is very safe (this is the safest configuration after the NO/NO combination).

On the other hand, the NC type "lock switch" is dangerous to electronic devices through its own use, so it is not recommended.

The fourth embodiment shown in Figs. 77 to 90 will now be described.

As shown in the figure, the overall design of the connector is consistent with the above-mentioned embodiment.

In particular, the bottom plate 36 and the cover 76 are consistent.

However, it should be pointed out in FIG. 78 that the bottom surface of the front end of the base plate has a recessed portion 300, which avoids the area under the connector, which is used for mounting components on the printed circuit board under the connector.

As a result, the locking device 140 is consistent with the details of the locking device shown in FIGS. 1 to 43. The difference is that its transverse upper plate 142 has a protrusion 302 forming a rib for reinforcing the beam and The emboss-like gripping part is made to facilitate the operation of the locking device.

Here, the design of the locking switch is novel. Depending on whether the locking device is locked or unlocked, it is no longer a switch that changes state only once, but a kind of switch when the locking device is locked or unlocked. When the locking device is in the unlocked state, there are three successive independent switches.

More specifically, the design of the two contact pieces 200 and 202 here can generate an electrical program of opening, closing, and opening of the switches 140-200-202.

For this purpose, it can be seen from the comparison of FIGS. 79 and 80 with FIGS. 11 and 12 that the lock switch contacts 200 and 202 have been modified.

00810505.7 Close to its front free end, the switch contact piece 200 has a contact piece 218, which is bent 180. U-shaped hairpin shape, the contact piece extends laterally outward and longitudinally backward, and has a vertical upward protruding contact protrusion 226 for engaging with the lower surface 188 of the corresponding contact protrusion 172 of the metal locking device 140 . More specifically, the contact protrusion 226 is horizontally aligned with the contact protrusion 172, and its position is set in such a way that when the locking device is in the unlocked rear position shown in FIG. 82, it is at the front transverse edge of the contact protrusion 172 177 in front.

Near its center, the switch contact piece 202 has a contact piece 220 that is bent at 90°, and the contact piece extends laterally outward and longitudinally forward, and has a vertically protruding contact protrusion 228 for connecting with the metal locking device 140 The lower surface 190 of the corresponding contact protrusion 174 engages. More specifically, the contact protrusion 228 is horizontally aligned with the contact protrusion 174, and its position is set in such a way that when the locking device is in the front locking position shown in FIG. 90, it is at the rear transverse edge of the contact protrusion 174 183 behind.

The longitudinal relative positions of the two switch contact pieces 200 and 202 are such that they contact the protrusions 226 and 228 and the size of the locking device 140 (especially the front transverse edge 177 of the contact protrusion 172 and the rear transverse edge of the contact protrusion 174 are separated The distance of 183) is such that it is possible to ensure the opening-closing "opening procedure". This is explained in conjunction with Figures 82, 84, 86, 88 and 90.

In Figure 82, the cover 76 just closes. The switch contact pieces 202, 220, 228 are in electrical contact with the lower surface 190 of the contact protrusion 174, but the switch contact piece 200 does not contact the locking device because the contact protrusion 226 is opposite to the front transverse edge 177 of the contact protrusion 172 Forward bias.

Therefore, it needs to be pointed out that the electrical circuit is open and there is no electrical consumption due to the locking switch, which is advantageous.

The operation of closing the locking device 140 to lock the cover 76 is equivalent to moving the locking device from left to right in FIG. 82.

During the locking operation, the locking device reaches the position shown in FIG. 84, in which the switch contact pieces 202, 226 are still in contact with the contact protrusions 174, 190 of the locking device, but the locking switch 140 contacts the protrusions. The front lateral side 177 of the 172 has not yet contacted the contact protrusion 226 of the switch contact piece 200. The locking device is then at the limit position where the locking starts, at

00810505.7 This still leaves a locking stroke of, for example, 1.9 mm, and before the electrical contact between the contact protrusion 228 and the lower surface 190 of the contact protrusion 174 is disconnected, there is still a 0.8 mm stroke. Therefore, the electrical circuit is still disconnected.

Then, it reaches the position shown in FIG. 86, in which the switch contact pieces 202, 228 are still in contact with the contact protrusion 174 of the lock switch 140, and the contact protrusion 172 and the switch contact piece 202 are in contact through the contact protrusion 226, this The contact protrusion is in electrical contact with the lower surface 188 of the contact protrusion 172.

The locking of the cover works from a 0.4mm stroke, still leaving a 1.5mm locking stroke, and before the electrical contact between the contact protrusion 228 of the switch contact piece 202 and the lower surface 190 of the contact protrusion 174 is broken , There is still a 0.4mm stroke. After that, the electrical circuit is therefore closed.

Then, it reaches the position shown in FIG. 88, where the contact protrusions 228 of the switch contact piece 202 and the locking device 140 contact protrusions 174, 190, 183 have just been disconnected, and the contact protrusions 172 are still in contact with the switch contact piece 200 The protrusion 226 is in electrical contact. Therefore, before reaching the fully locked position shown in Figure 90, there is still a 0.75mm forward locking stroke.

Once the position shown in Figure 88 is reached, the electrical circuit is opened again, and the electrical consumption of the locking switch circuit is zero again.

Naturally, in the locked position shown in Figure 90, the electrical circuit is still open, and there is still a 0.5mm safety margin in the unlocked direction.

Therefore, during the locking process of the locking device 140, the opening-closing-opening procedure has been executed, that is, from the point of view of the processing circuit that receives the information from the locking switch 200-202-140, the function of this switch is An electric pulse is generated during the locking operation, or vice versa, during the unlocking operation, the unlocking procedure is similar.

The software for electronic equipment equipped with this connector makes it possible to detect the direction of movement of the locking device (locking or unlocking), for example, by storing the previous position in the memory.

In the closed and locked position, as in the unlocked position, there is no electrical loss due to the existence of the lock switch 200-292-140.

If the performance of the switch deteriorates after a period of time, the operation of electrical appliances will not be affected until the first unlocking operation fails. Electrical appliances may no longer resume operation,

00810505.7 No. Unless during the two-way operation of the locking device, the self-cleaning function of the contact piece allows the locking switch 200-202-140 to operate correctly.

On the other hand, during the first unlocking operation after the failure, the original safety function in the switch is no longer guaranteed.

The embodiment shown in Figure 91 and the following figures will now be explained. This embodiment makes it possible to unlock the position of the locking device and its movement direction (the direction of the locking movement or the unlocking movement) at any time, and Provide users with multiple locking switches, which can be combined according to the use of electrical appliances and the choices they need to make.

According to the fifth embodiment, a third locking switch contact piece 400 is provided. Here, the first and second switch contact pieces 200 and 202 are similar to the contact pieces described in the above-mentioned fourth embodiment.

The switch contacts are only slightly modified in their settings and their electrical connections in order to allow the installation of the third switch contact 400, which in this case is the so-called "common" contact, which is always associated with the locking device The lower surface 190 of the contact protrusion 174 is electrically connected, and the output or connection protrusion 406 thus forms a point, which is common to various lock switches.

For this purpose, the common contact piece 400 has a contact tab 402 bent at 90°, and the contact tab has a contact protrusion 404, which is always in contact with the contact protrusions 174, 190, that is, regardless of the locking device Relative to the bottom plate 36, and thus relative to the common contact pieces 400, 404 in the longitudinal direction.

Therefore, in the unlocking position of the locking device 140 corresponding to FIG. 82, the switch composed of the contact pieces 202 and 400 closes the electronic circuit between the output terminals 232 and 406. When the locking device reaches and then exceeds the figure At the position shown in 88, this electronic circuit is open. So this is an NC type switch.

The switches 202-400 also make it possible to detect when the cover 76 is closed.

If the switch composed of the switch contacts 200 and 400 is used in the unlocking position of the lock switch 140, corresponding to FIG. 82, the switch composed of the contacts 200 and 400 "turns on" the electronic output between the output terminals 230 and 406 When the locking device reaches and then exceeds the position shown in Figure 86, this switch closes the electronic circuit. Therefore, this is a NO type switch.

If a switch composed of contact pieces 200 and 202 is used, this is also equivalent to the pulse type switch of the fourth embodiment, and allows the opening, closing, and opening procedures to be carried out.

00810505.7 First, if the third contact 400 is also used, it is possible to identify between the movement directions of the locking device, and in combination with the NO switch (200-400), it still provides a time delay, so that no longer during operation Consumption of current, knowing that it has the function of NC type switch (202-400), without the corresponding time delay, allowing the detection of the direction of movement.

The invention is not limited to the described and mentioned embodiments and their different solutions.

For example, the moving locking device can be made of plastic, and a metal layer is sprayed on its functional surface with the function of locking the switch.

The present invention is not limited to the locking device being a kind of locking rod, which is installed on the cover to rotate longitudinally around the connecting axis.

According to the principle of detecting the locking position of the lid locking element according to the present invention, in any case combined with the detection of the end of the closing stroke of the lid, it can be used in the design of other known devices for locking the lid or the cap in the closed position.

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