Improved structure of USB connector (I)

USB connector structure improvement (1)

This creation is about the structural improvement of a connector, especially the structural improvement of the USB connector.

Universal Serial Bus (USB) is one of the most widely used transmission interfaces in PC peripheral products. It was originally initiated by Intel and Microsoft. It has experienced USB1.0, USB1.1 and USB2 so far. .0 and other three versions of the development process. The USB 1.0, 1.1, and 2.0 versions support the following three transmission rates: (1) the low-speed mode transmission rate is 1.5 Mbps; (2) the full-speed mode transmission rate is 12 Mbps; and (3) the high-speed mode transmission rate is 480 Mbps.

However, with the development of the electronics industry, even the transmission speed of USB 2.0 can no longer meet the development requirements of some electronic industries, so the USB 3.0 transmission interface is introduced. The USB 3.0 transmission interface adds two sets of differential terminals and one grounding terminal to the USB 2.0 with four terminals, so there are nine terminals, so that the transmission rate reaches 5 Gbps.

According to the prior art, the female connector conforming to the USB 3.0 specification mainly includes an insulative housing, and a front end of the insulative housing extends a tongue plate to contact the contact portion of the added five terminals with the four terminals of the original USB 2.0. The portions are respectively disposed on opposite surfaces of the tongue plate; since the positions of the terminals have been uniformly standardized, the five terminals added are divided into two rows in the vertical direction from the original four terminals, and all the terminals are separated from each other to avoid Short circuit.

However, with the development trend of computer peripheral products and their corresponding connectors becoming lighter, thinner, shorter and smaller, arranging nine terminals on such a small-sized tongue plate does increase the difficulty of process and assembly, and cannot The volume of the entire connector is further reduced in thickness.

Therefore, how to solve the above problems becomes the goal of improvement by the creator.

One of the purposes of this creation is to provide an improved USB connector structure that simplifies the structure and reduces the size of the connector to meet the requirements of thinning, and does not simplify the structure, causing the conductive terminals to be biased after prolonged use. Shift phenomenon.

In order to achieve the above purpose, the present invention provides an improved USB connector structure, including: an insulating body, a circuit board, a connecting terminal and a conductive terminal; a through slot in the insulating body and a plurality of terminal slots at a lower edge of the through slot; The plate penetrates the through slot and has opposite first and second surfaces. The front end of the first surface is provided with a plurality of gold fingers, and the rear of the gold finger is recessed with a plurality of blind holes; one end of the connecting terminal is disposed on the circuit board away from the gold The rear ends of the fingers are respectively electrically connected to the respective gold fingers; the conductive terminals respectively pass through the terminal slots, and the front ends of the conductive terminals have a guiding portion, and the leading edge of each guiding portion is located in the blind hole behind the gold finger.

Compared with the prior art, the present invention has the following effects: in this creation, a plurality of gold fingers are directly arranged on the front end of the circuit board, and a plurality of connection terminals electrically connected to the gold fingers are disposed at the rear end thereof instead of the conventional ones. Five conductive terminals, and the insulating body does not need to extend out of the tongue to connect the nine conductive terminals, thereby greatly simplifying the structure of the female connector and meeting the requirements of thinning; on the other hand, the structure of the present invention is simplified and The number of parts required is reduced, thus reducing manufacturing costs and assembly time.

Moreover, a plurality of blind holes are recessed in the rear of the plurality of gold fingers on the circuit board, so that the leading edges of the guiding portions of the respective conductive terminals are respectively located in the blind holes, thereby fixing the conductive terminals. In this way, it is possible to prevent the offset of each of the conductive terminals after a long period of use, thereby effectively extending the life of the connector.

For a more detailed understanding of the features and technical aspects of the present invention, reference should be made to the description and the accompanying drawings.

First, the "front" and "rear" mentioned in the following description are used to accommodate a corresponding male connector 80 according to the USB connector structure modification (such as the male connector shown in the fifth figure). 80) The direction of the inserted opening is defined as the front, and the direction opposite to the opening is defined as the rear.

Please refer to the first figure, which is an exploded perspective view of the present invention. The present invention provides a USB connector structure improvement (hereinafter referred to as a female connector 1). The female connector 1 mainly includes an insulative housing 10 and a circuit board 20 . The plurality of connection terminals 30, the plurality of conductive terminals 40, a fixing base 50, and a metal casing 60.

The insulative housing 10 is made of an insulating material such as plastic or resin. The insulative housing 10 defines a through slot 11 in the front-rear direction and a plurality of terminal slots 12 at the lower edge of the through slot 11. The slot 11 and the terminal slot 12 are both connected to the front and rear ends of the insulative housing 10. The number of the plurality of terminal slots 12 corresponds to the number of the plurality of conductive terminals 40. In this embodiment, four are exemplified, but are not limited.

The circuit board 20 is a thin printed circuit board having a width substantially equal to the width of the through slot 11 of the insulative housing 10, so that the circuit board 20 can pass through the slot 11. The circuit board 20 has an opposite first surface 21 and a second surface 22. In the present embodiment, the first surface 21 refers to the lower surface of the circuit board 20, and the second surface 22 refers to the upper surface of the circuit board 20. .

A plurality of gold fingers 211 are disposed on the front end of the first surface 21, and the gold fingers 211 are formed on the first surface 21 by a copper foil conductive material, and the first surface 21 of the circuit board 20 is behind the plurality of gold fingers 211. A plurality of blind holes 212 are further recessed. The number of the plurality of gold fingers 211 corresponds to the number of the plurality of connection terminals 30. In the embodiment, five pieces are taken as an example; the number of the blind holes 212 corresponds to the number of the plurality of conductive terminals 40. In this embodiment, four are used. For example, but not limited. In this embodiment, the five gold fingers 211 and the four conductive terminals 40 can form a connection structure of a universal serial bus (USB) 3.0.

The plurality of connection terminals 30 are made of a metal conductive material, and one end portion 31 of each of the connection terminals 30 has one end portion 31, and the other end of the end portion 31 has a solder portion 32. The end portions 31 of the connecting terminals 30 are respectively disposed on the rear end of the distal gold finger 211 on the circuit board 20, and are electrically connected to the plurality of gold fingers 211 disposed on the first surface 21, and the soldering portions 32 are oriented. It extends away from the direction of the circuit board 20. The number of the connection terminals 30 corresponds to the number of the gold fingers 211, and five are exemplified in this embodiment.

The plurality of conductive terminals 40 are made of a metal conductive material. The conductive terminals 40 are respectively connected to the terminal slots 12 of the insulative housing 10. In this embodiment, the number of the plurality of conductive terminals 40 is exemplified by four. The front ends of the conductive terminals 40 respectively have a guiding portion 41, and a solder portion 42 is formed on each of the rear ends of the guiding portions 41. When the conductive terminals 40 are connected to the terminal slots 12 of the insulative housing 10, the guiding portions 41 of the conductive terminals 40 protrude from the front end of the insulative housing 10, and the leading edges of the guiding portions 41 are respectively located on the first surface 21. The plurality of blind holes 212 are inside. The welded portion 42 protrudes from the rear end of the terminal groove 12 and extends downward, and is disposed in parallel with the welded portion 32 of the plurality of connection terminals 30.

Referring to the second and third figures, the first combined perspective view and the second combined perspective view of the present invention, the guiding portion 41 of the plurality of conductive terminals 40 is located behind the gold finger 211 on the first surface 21. Referring again to the fourth figure, a combined sectional view of the present creation. As shown, the guiding portion 41 is not flat against the first surface 21, the leading edge portion thereof is located in the blind hole 212 on the first surface 21, and the guiding portion 41 and the gold finger 211 on the first surface 21 are shown. Not at the same level.

Referring to the first figure again, the fixing base 50 has a bottom plate 51 and a rear cover 52 extending vertically upward from the bottom plate 51. The bottom plate 51 is respectively provided with a protrusion 511 on both sides. The bottom plate 51 is provided with a front row of jacks 512 and a rear row of jacks 513. The number of the front row of jacks 512 is four for inserting the soldering portions 42 of the plurality of conductive terminals 40; the number of the rear row of jacks 513 is Five for inserting the soldering portion 32 of the plurality of connection terminals 30. Therefore, the front row of jacks 512 and the rear row of jacks 513 correspond to the number and position of the soldering portions 42 of the plurality of conductive terminals 40 and the soldering portions 32 of the plurality of connecting terminals 30, respectively.

Moreover, the soldering portion 42 of the plurality of conductive terminals 40 and the soldering portion 32 of the plurality of connecting terminals 30 respectively extend downward to pass through the front row of jacks 512 and the rear row of jacks 513. Finally, the soldering portions 42 and 32 are electrically connected together. Soldering to an external circuit substrate 70 (such as the external circuit substrate 70 shown in FIG. 5), whereby the female connector 1 of the present invention is electrically connected to the external circuit substrate 70.

A card slot 13 is defined in the inner wall of the bottom surface of the insulative housing 10 for the purpose of embedding the protrusions 511 on the two sides of the bottom plate 51. Therefore, when the fixing base 50 is assembled from the bottom to the bottom of the insulative housing 10, The protrusions 511 of the bottom plate 51 will be caught in the card slots 13 at the bottom of the insulative housing 10, and the soldering portions 42 of the conductive terminals 40 are respectively passed through the front row of jacks 512 on the bottom plate 51, and the connection terminals 30 are soldered. The portion 32 passes through the rear row of jacks 513 on the bottom plate 51, and the rear cover 52 covers the rear end surface of the insulative housing 10, thereby protecting the circuit board 20, the plurality of connection terminals 30, and the plurality of conductive terminals in the insulative housing 10. 40.

The metal housing 60 is substantially a rectangular hollow housing that covers the outer periphery of the insulative housing 10 to provide metal shielding to prevent electromagnetic interference, and to protect the internal circuit board 20, the plurality of connection terminals 30, and the plurality of conductive terminals. 40.

Referring to the fifth and sixth figures, a side cross-sectional view of the female connector 1 and a corresponding male connector of the present invention before being inserted into each other, and a side cross-sectional view after being inserted into each other. The male connector 80 is an existing male connector conforming to the USB 3.0 specification, and has four first terminals 81 and five second terminals 82. As can be seen from the side cross-sectional view of the fifth figure, the first terminal 81 It is located below the second terminal 82, and the first terminal 81 and the second terminal 82 are offset from each other.

As shown in the sixth figure, when the female connector 1 of the present invention and the corresponding male connector 80 are plugged into each other, the gold finger 211 on the first surface 21 of the circuit board 20 will contact the male connector 80. The second terminal 82 contacts the first terminal 81 in the male connector 80, thereby electrically connecting the female connector 1 and the male connector 80. It should be noted that when the guiding portion 41 of the conductive terminal 40 abuts the first terminal 81 in the male connector 80, the leading edges of the guiding portions 41 are respectively trapped in the blind holes 212 on the first surface 21. In this way, the plurality of blind holes 212 can respectively produce a positioning effect on each of the conductive terminals 40, so that the conductive terminals 40 are not offset by the plug connection with the male connector 80, thereby reducing the failure rate of the connector.

Compared with the prior art, in the present invention, a plurality of gold fingers 211 are disposed directly on the front end of the circuit board 20, and a plurality of connection terminals 30 electrically connected to the gold fingers 211 are disposed at the rear end thereof instead of the conventional five. The conductive terminal, and the insulating body 10 does not need to extend out of the tongue to connect the nine conductive terminals, thereby greatly simplifying the structure of the female connector 1 and meeting the requirements for thinning; on the other hand, the structure of the present invention is simplified and The number of parts required is reduced, so that the manufacturing cost can be reduced and the assembly time can be shortened. Further, a plurality of blind holes 212 are recessed behind the plurality of gold fingers 211 on the circuit board 20 so that the conductive portions 41 of the conductive terminals 40 are connected. The leading edge is located in it. In this way, the conductive terminal can cause the offset phenomenon after a long time of use, thereby prolonging the service life of the connector.

The above is only a specific description of a preferred embodiment of the present invention, and is not intended to limit the scope of the patents of the present invention, and any other equivalent transformations are within the scope of the patent application described below.

<p>1 female connector</p><p>10Insulated body</p><p>11through slot</p><p>12Terminal slot</p><p>13 card slot</p><p>20 boards</p><p>21 first surface</p><p>211 Gold Finger</p><p>212Blind hole</p><p>22 second surface</p><p>30Connecting terminal</p><p>31 End</p><p>32Weld Department</p><p>40Electrical terminals</p><p>41Guidance</p><p>42Weld Department</p><p>50 fixed seat</p><p>51floor</p><p>511Bump</p><p>512 front row jack</p><p>513 Rear jack</p><p>52Back cover</p><p>60Metal housing</p><p>70External circuit board</p><p>80 Male connector</p><p>81First terminal</p><p>82second terminal</p>

The first picture is an exploded perspective view of the creation.

The second picture is the first combined perspective of the creation.

The third picture is a second combined perspective of the creation.

The fourth picture is a combined sectional view of the creation.

The fifth figure is a side cross-sectional view of the female connector and the corresponding male connector of the present invention before being inserted into each other.

The sixth figure is a side cross-sectional view of the female connector of the present invention and the corresponding male connector being inserted into each other.