Electrical connector

Electrical connector

The present invention relates to an electrical connector, and more particularly to a waterproof electrical connector.

The Chinese patent CN201420289309.2 discloses an electrical connector, comprising a first module, comprising a first insulating member and a plurality of first conductive terminals and a grounding metal plate embedded in the first insulating member, wherein The first insulating member includes a tongue portion having an opposite first surface and a second surface, the second surface is formed with a plurality of terminal receiving grooves; a second module, and the The first module is stacked together, the second module includes a second insulating member and a plurality of second conductive terminals embedded in the second insulating member, and the abutting portions of the second conductive terminals are correspondingly received in the terminals The first insulating member and the second insulating member are combined to form an insulating body; an inner shielding shell is fixed on the insulating body and attached to the tongue plate. The rear section of the section extends for a distance; and an outer shielded housing. This electrical connector is well suited for high speed signal transmission and easy assembly. However, due to the lack of a specially designed waterproof structure on such an electrical connector, and in the first insulating member and the second The insulating body formed by the combination of the edge pieces is also prone to the joint gap, which results in insufficient waterproof sealing and is difficult to adapt to the application environment with high waterproof requirements.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide an electrical connector that can be well adapted to an application environment with high waterproof requirements.

The present invention provides an electrical connector for the above technical problem, comprising: a composite module comprising a lower row of terminal modules and an upper row of terminal modules mounted on the lower row of terminal modules, the lower row of terminal modules The set includes a first insulating member and a set of first conductive terminals disposed on the first insulating member, the upper row of terminal modules including a second insulating member and a second set disposed on the second insulating member a conductive terminal, the second insulating member is combined with the first insulating member to form an insulating body and a tongue extending forwardly from the insulating body, the first conductive terminal and the second conductive terminal are exposedly disposed on The upper and lower surfaces of the tongue plate; wherein the outer peripheral surface of the insulating body is circumferentially disposed with a first receiving channel, the insulating body is further disposed at a position corresponding to a joint between the first insulating member and the second insulating member There is at least one second receiving channel; an outer shielding shell sleeved on the outer circumference of the composite module, and surrounding the tongue plate correspondingly forming a pair of connecting cavities with a front opening; two inner shielding sheets, which are attached In the upper and lower of the composite module And contacting the inner shield to the outer surface of the housing; a sealing ring, which corresponds to a first sleeve disposed within the receiving channel, The first receiving channel is disposed behind the two inner shielding sheets, and the sealing ring is interposed between an outer circumferential surface of the insulating body and an inner surface of the outer shielding shell for sealing the outer shielding shell a bonding gap with the insulating body; and at least one sealing member formed by colloidal deposition in the at least one second receiving channel for sealing the first insulating member and the second insulating member The gap between the joints.

In some embodiments, the first receiving channel is annular, and is formed by a first portion of the channel disposed in the first insulating member and a second portion of the channel disposed in the second insulating member.

In some embodiments, the leading edge of the insulating body is formed with a stepped portion having a mounting surface extending horizontally front and rear and a stop surface extending vertically from a rear end edge of the mounting surface; The first receiving channel is recessed on the mounting surface, and the sealing ring abuts the stopping surface.

In some embodiments, the two inner shielding sheets are attached to the tongue plate and extend forward a distance; the rear end edge of the outer shielding shell abuts the stopping surface.

In some embodiments, the inner surface of the rear end edge of the outer shield case is formed with a pressing surface that cooperates with the sealing ring, and the pressing surface has a front low and a high trumpet shape.

In some embodiments, the seal is an annular seal made of silicone material.

In some embodiments, the at least one second receiving channel includes a second receiving channel opening at the bottom of the insulating body; the first insulation The rear portion of the member is formed with a receiving space for receiving the second insulating member; the second insulating member extends rearward relative to the first insulating member and a step portion is formed on the bottom surface; wherein the opening is at the bottom of the insulating body The two receiving channels include a horizontal groove extending horizontally from the step portion of the second insulating member and the first insulating member.

In some embodiments, the second receiving channel opening at the bottom of the insulating body further includes two vertical grooves extending vertically from lateral sides of the horizontal groove, and the vertical groove communicates with the horizontal groove.

In some embodiments, the at least one second receiving channel further includes two second receiving channels respectively opening on the top of the insulating body; the first insulating member and the second insulating member are respectively on opposite surfaces The recesses are provided with two mounting slots extending vertically and two mounting posts corresponding to the two mounting slots; wherein the two receiving slots of the two openings at the top of the insulating body are formed by the two mounting slots The upper part of the composition.

In some embodiments, the grounding metal piece is embedded in the first insulating member, and a grounding terminal is disposed on each of the two outer sides of the first conductive terminal; the grounding metal piece extends downwardly from the two grounding pads. Each of the grounding legs is correspondingly disposed adjacent to a grounding terminal.

In some embodiments, the electrical connector further includes a grounding reinforcement housing, the outer shield housing is an annular structure extending in a front-rear direction; the ground reinforcement housing is circumferentially fixed to the outer circumference of the outer shield housing, and Extend a number of grounding feet on both sides.

In some embodiments, the outer shield housing includes a bottom wall, two side walls extending upwardly from opposite sides of the bottom wall, and two The top ends of the side walls are horizontally extended to form a top wall having a first joint seam; the ground reinforcement shell includes a top wall and two side walls which are respectively bent downwardly from two sides of the top wall And a bottom wall having a second joint seam formed by horizontally extending the bottom ends of the two side walls; the outer shield shell and the ground reinforcement shell pass through the first joint seam and the second joint seam Welded on both sides to be fixedly bonded together.

In some embodiments, the gel is a sealant, a waterproof glue or a molten plastic.

Compared with the prior art, the present invention provides a first receiving channel between the composite module and the outer shielding shell and a sealing ring to seal the joint between the composite module and the outer shielding shell. a gap, and at least one second receiving channel is disposed between the first insulating member and the second insulating member constituting the composite module and the glue is poured to form at least one sealing member to seal the first insulating member and the second insulating member The bonding gap between the two can effectively prevent the external water droplets from penetrating backward through the bonding gap inside the electrical connector to the electronic device equipped with the electrical connector, and can well adapt to the application environment with high waterproof requirements.

<p>10Electrical connector</p><p>28The first part of the channel</p><p>1Composite module</p><p>29 accommodating space</p><p>11Insulation body</p><p>3Upper terminal module</p><p>12 tongue</p><p>31Second insulation</p><p>129 holding slot</p><p>317Outside surface</p><p>17Steps Department</p><p>318 Groove</p><p>171Installation surface</p><p>32Second conductive terminal</p><p>172 stop surface</p><p>321 Fixed Department</p><p>18First containment channel</p><p>322Docking Department</p><p>19Second containment channel</p><p>323Weld Department</p><p>191 transverse slot</p><p>36Terminal slot</p><p>2Lower terminal module</p><p>37Installation column</p><p>21First insulation</p><p>38Second part of the channel</p><p>211 base</p><p>39Steps</p><p>215Ontology</p><p>391 affixing surface</p><p>216Installation pier</p><p>392 front face</p><p>217 inside surface</p><p>393Extended face</p><p>22First conductive terminal</p><p>4Grounded metal sheet</p><p>221 Fixed Department</p><p>41 board</p><p>222Docking Department</p><p>42Grounding feet</p><p>223Welding Department</p><p>5Inside mask</p><p>27Installation slot</p><p>54The back edge</p><p>6Outer shielded housing</p><p>75Extension wall</p><p>61 bottom wall</p><p>76Fixed feet</p><p>62 side wall</p><p>8 sealing ring</p><p>63 top wall</p><p>9Seal</p><p>631First joint seam</p><p>91 Sealing strip</p><p>64The back edge</p><p>911 horizontal extension</p><p>641Squeeze surface</p><p>912 Vertical extension</p><p>69 docking chamber</p><p>92 Sealing block</p><p>7Grounding reinforcement housing</p><p>20 boards</p><p>71 top wall</p><p>201Installation slot</p><p>72 side wall</p><p>202Grounding hole</p><p>73 bottom wall</p><p>203 welding holes</p><p>731Second joint seam</p><p>204Front fixed soldering holes</p><p>74Front fixed feet</p><p>206Fixed welding holes</p>

Other features and advantages of the present invention will be apparent from the detailed description of the embodiments of the present invention. FIG. 1 is a perspective view of a preferred embodiment of the present invention and a circuit board; FIG. It is an exploded perspective view of a preferred embodiment of the present invention and a circuit board; 3 is a front view of the preferred embodiment of the present invention; FIG. 4 is a cross-sectional view along line AA of FIG. 3; FIG. 5 is an exploded perspective view of the preferred embodiment of the present invention. FIG. 6 is a perspective exploded view of the composite module of the preferred embodiment of the present invention; FIG. 7 is a bottom view of the composite module of the preferred embodiment of the present invention; FIG. Figure 9 is a cross-sectional view taken along line CC of Figure 7; Figures 10 and 11 are perspective views of two different viewing angles of the composite module of the preferred embodiment of the present invention, wherein Figure 10 and Figure 11 The sealing member is removed so that the second receiving channel can be clearly shown; FIG. 12 is an exploded perspective view of the composite module and the sealing member in the preferred embodiment of the present invention; and FIG. 13 and FIG. An exploded view of two different perspectives further decomposed on the basis of 12.

Although the present invention can be readily embodied in various forms, the specific embodiments shown in the drawings and described in detail in the specification are only The exemplary description of the novel principles is not intended to limit the invention to what is described herein.

Thus, a feature indicated in this specification will be used to illustrate one of the features of one embodiment of the present invention, rather than suggesting Each embodiment of the type must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indications of the directions (such as up, down, left, right, front and back) are used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The preferred embodiments of the present invention are further elaborated below in conjunction with the drawings of the specification.

Referring to Figures 1 through 14, the present invention provides an electrical connector 10, preferably a USB Type-C type electrical connector receptacle having a waterproof function. The electrical connector 10 includes a composite module 1 , a grounding metal piece 4 disposed in the composite module 1 , and two inner shielding sheets 5 attached to the outer periphery of the composite module 1 , and surrounding the composite module The outer circumference of the group 1 and the two inner shielding sheets 5 correspondingly form an outer shielding shell 6 which is open to the front, and a ground reinforcing shell 7 fixed to the outer circumference of the outer shielding shell 6 , and is mounted on the composite module 1 A sealing ring 8 on the upper side and a plurality of sealing members 9 formed by the condensation of the colloid poured in the composite module 1. The electrical connector 10 can be mounted on a circuit board 20 in a sinking manner. Referring to FIG. 2, the circuit board 20 is provided with a mounting slot 201 for the electrical connector 10 to be sunk. The circuit board 20 is provided with two grounding holes 202, a plurality of welding holes 203, and two matching the electrical connector 10. The front fixed weld hole 204 and the two rear fixed weld holes 206.

Referring to FIG. 4 and FIG. 5 , the composite module 1 includes a lower row terminal module 2 and an upper row terminal module 3 mounted on the lower row terminal module 2 . Referring to FIG. 12 to FIG. 14 , the lower row terminal module 2 includes a first insulating member 21 and a set of first conductive terminals 22 disposed on the first insulating member 21 . The upper row of terminal modules 3 includes a second insulating member 31 and a set of second conductive terminals 32 disposed on the second insulating member 31. The second insulating member 31 and the first insulating member 21 form an insulating body 11 and a tongue 12 extending forward from the insulating body 11. The first conductive terminals 22 and the second conductive terminals 32 are respectively exposed on the upper and lower surfaces of the tongue plate 12 . A latching groove 129 is formed in each of the left and right sides of the tongue plate 12 so as to be engaged by a grounding elastic piece on a pair of connectors (not shown). Referring to FIG. 6, a first receiving channel 18 is circumferentially disposed on the outer peripheral surface of the leading edge of the insulating body 11. Referring to FIG. 10 and FIG. 11 , the insulating body 11 is provided with a plurality of second receiving channels 19 at positions corresponding to the joints between the first insulating member 21 and the second insulating member 31, and specifically includes openings for the insulation. A second receiving channel 19 at the bottom of the main body 11 and two second receiving channels 19 opening at the top of the insulating body 11.

Referring to FIG. 5, FIG. 6, FIG. 12 and FIG. 13, the first receiving channel 18 is annular, and is disposed on a first portion of the channel 28 of the first insulating member 21 and disposed on the second insulating member 31. A second portion of the channel 38 is connected to each other. Specifically, the front portion of the insulating body 11 is formed with a step portion 17 . The step portion 17 has a mounting surface 171 extending horizontally forward and backward and a stop surface 172 extending vertically from the rear end edge of the mounting surface 171. The The first receiving channel 18 is recessed at the rear end of the mounting surface 171. Preferably, the first receiving channel 18 has a circular arc shape in cross section.

Referring to FIGS. 12-14, the first insulating member 21 has a base portion 211 and a tongue plate 12 extending forward from the base portion 211. The base portion 211 is combined with the second insulating member 31 to form the insulating body 11 described above. Specifically, the base 211 includes a body 215 and two mounting holes 216 projecting upward from both sides of the body 215, respectively. The rear portion of the body 215 and the two mounting holes 216 are combined to form a receiving space 29 for receiving the second insulating member 31. The first insulating member 21 is recessed with a vertically extending mounting groove 27 on the inner side surface 217 of the two mounting holes 216. The outer side surfaces 317 of the second insulating member 31 are respectively convexly extended in the up and down direction. A mounting post 37, the two mounting posts 37 can be correspondingly inserted into the two mounting slots 27. Referring to FIG. 11, the upper portions of the two mounting slots 27 respectively define a second receiving channel 19 which is open at the top of the insulating body 11.

Referring to FIG. 11 and FIG. 14, the bottom surface of the second insulating member 31 is formed with a step portion 39. Specifically, the front surface of the step portion 39 has a contact surface 391 extending horizontally and attached to the first insulating member 21, and a front end surface extending vertically downward from the rear end edge of the contact surface 391. 392 and an extension surface 393 extending horizontally rearward from the bottom edge of the front end surface 392. A plurality of terminal slots 36 that are open to the first conductive terminals 22 are formed on the front end surface 392 and the extension surface 393.

Referring to FIG. 4, FIG. 10 and FIG. 14, the step portion 39 and the first insulating member 21 enclose a horizontal groove 191 extending horizontally of the second receiving groove 19 opening at the bottom of the insulating body 11. The transverse groove 191 with this The terminal slots 36 are in communication. Referring to FIG. 13 and FIG. 14, a groove 318 is recessed vertically on each of the outer side surfaces 317 of the second insulating member 31. The two recesses 318 form two vertical slots of the second receiving channel 19 opening at the bottom of the insulating body 11, and the two vertical slots communicate with the lateral slot 191. It is worth mentioning that in other embodiments, the groove 318 can also be inclined/curved as long as it can accommodate the colloid poured into it. In some other embodiments (not shown), a colloidal receiving channel similar to the recess 318 may also be disposed on both inner side surfaces 217 of the first insulating member 21. In some other embodiments (not shown), a colloidal accommodating channel may be formed on both inner side surfaces 217 of the first insulating member 21 and the outer side surfaces 317 of the second insulating member 31 at the same time.

Referring to FIG. 2, FIG. 12 to FIG. 14, the grounding metal piece 4 is buried on the first insulating member 21. Specifically, the grounding metal piece 4 includes a plate body 41 and two grounding legs 42 extending downwardly from the rear end of the plate body 41. The plate body 41 is embedded in the tongue plate 12 to space the first conductive terminal 22 and the second conductive terminal 32. The two sides of the board body 41 are respectively exposed to the two latching slots 129 of the tongue board 12, and can be electrically connected to the grounding spring clips on the mating electrical connector. The two ground pads 42 can be soldered to the ground pads 202 on the board 20. It is worth mentioning that a pair of grounding terminals are disposed on the left and right sides of the first conductive terminal 22, and the two grounding legs 42 are juxtaposed with the two grounding terminals, so that one grounding leg 42 is juxtaposed with one. The ground terminals can be commonly inserted into the same ground pad 202 of the circuit board 20, which facilitates simplification of the circuit layout of the circuit board 20.

Referring to FIG. 4 to FIG. 6, the inner shielding sheet 5 has a stepped shape, and the two inner shielding sheets 5 are respectively attached to the upper and lower sides of the tongue plate 12 and extend forward a distance. Preferably, the rear end edge 54 of the inner shielding sheet 5 and the front side of the first receiving channel 18 are disposed adjacent to each other.

Referring to FIG. 4 to FIG. 6 , the outer shield shell 6 is an annular structure extending in the front-rear direction, and includes a bottom wall 61 , two side walls 62 respectively bent upwardly from two sides of the bottom wall 61 , and The top ends of the two side walls 62 are horizontally extended to form a top wall 63 having a first joint seam 631. The outer shield case 6 surrounds the tongue plate 12 correspondingly to form a pair of joint cavities 69 for opening forward for the mating electrical connector to be inserted. In the present embodiment, the rear end edge 64 of the outer shield case 6 preferably abuts against the stop surface 172 of the step portion 17 on the composite module 1. In this embodiment, the inner surface of the rear end edge 64 of the outer shield case 6 is formed with a pressing surface 641 which is a front low and rear high trumpet shape, and the shape structure is favorable for resisting The sealing ring 8 is tightly fitted to it.

Referring to FIG. 4 to FIG. 6 , the grounding reinforcing shell 7 is circumferentially fixed on the outer circumference of the outer shielding shell 6 and extends downwardly on the two sides with a plurality of grounding fixing legs (hereinafter referred to as front fixing legs 74 and rear fixing, respectively). Feet 76). The grounding shielding structure can provide grounding for the outer shielding shell 6, and at the same time, since it is not necessary to bend the outer shielding shell 6 to form a grounding fixing leg, it is advantageous to ensure the complete sealing property of the docking chamber 69 and improve the waterproof capability. Specifically, the grounding reinforcement housing 7 includes a top wall 71, two side walls 72 bent downwardly from opposite sides of the top wall 71, and the lower ends of the two side walls 72 are horizontally extended and joined together. Forming a bottom wall 73 having a second joint seam 731 and An extension wall 75 of the rear end of the top wall 71 further extends rearward. The two side walls 72 are respectively torn and extend downwardly from a front fixing leg 74. The two sides of the extending wall 75 respectively extend downwardly from a rear fixing leg 76. The two front fixing legs 74 can be correspondingly welded into the front fixing holes 204 of the circuit board 20, and the two rear fixing legs 76 can be correspondingly welded into the rear fixing holes 206 of the circuit board 20. It is to be noted that the outer shield housing 6 and the grounding reinforcement housing 7 are fixedly coupled by welding on both sides of the first joint seam 631 and the second joint seam 731, which is advantageous for improving the outer shield shell. The strength of the body 6 prevents it from cracking and the outer shield housing 6 is better electrically connected to the grounded reinforcing housing 7.

Referring to Figures 4 to 6 and Figures 10 and 11, the sealing ring 8 is an annular seal made of silicone material. The sealing ring 8 is correspondingly sleeved in the first receiving channel 18 . In the present embodiment, the seal ring 8 is circular in cross section when it is not pressed. The seal ring 8 is interposed between the outer peripheral surface of the insulating body 11 and the inner surface of the rear end edge 64 of the outer shield case 6. Specifically, the bottom side of the seal ring 8 is supported by the first receiving channel 18 . The top side of the seal ring 8 is pressed by the pressing face 641 of the outer shield case 6. The rear side of the seal ring 8 is abutted by the stop surface 172 of the step portion 17 on the composite module 1. The front side of the sealing ring 8 is sealed between the rear end edge 64 of the outer shield housing 6 and the rear end edge 54 of the two inner shielding sheets 5. The sealing structure is advantageous for sealing the joint gap between the outer shield shell 6 and the insulating body 11 and improving the waterproof capability of the electrical connector 10.

Referring to FIG. 4 and FIG. 7 to FIG. 14 , the sealing members 9 are colloids correspondingly filled in the second receiving grooves 19 of the composite module 1 ( For example, a sealant, a waterproof glue, a molten plastic, or the like is formed by consolidation to sufficiently seal the joint gap between the first insulating member 21 and the second insulating member 31, thereby improving the waterproof capability of the electrical connector 10. In the present embodiment, the sealing members 9 specifically include a sealing strip 91 formed by colloidal consolidation of a second receiving channel 19 opened in the bottom of the insulating body 11 and a top opening of the insulating body 11 by a filling opening. The two sealing blocks 92 of the two second receiving channels 19 are formed by solidification. Corresponding to the structure of the second receiving channel 19 opening at the bottom of the insulating body 11, the sealing strip 91 includes a lateral extending portion 911 extending horizontally horizontally and vertically extending from both ends of the lateral extending portion 911 Two vertical extensions 912 that extend straight up. The structure of the sealing member 9 can sufficiently seal the joint gap between the first insulating member 21 and the second insulating member 31 from the left and right lateral direction and the upper and lower vertical directions, thereby preventing the water in the front docking chamber 69. Penetrate backward through the bonding gap. It is worth mentioning that the shape of the sealing strip 91 and the sealing block 92 shown in the figures is only schematic, and the actual shape may be different due to the perfusion conditions. In some embodiments, two sealing blocks 92 can be omitted. In some embodiments, the first joint seam 631 of the outer shield shell 6 is also filled with a sealant (not shown), so that water droplets in the docking chamber 69 can be prevented from penetrating inwardly through the first joint slit 631. And preferably, a waterproof sealing member (not shown) such as a rubber ring is disposed on the outer periphery of the front end of the outer shield case 6, and the waterproof sealing member and the electronic device in which the electrical connector 10 is mounted The inner wall is tightly fitted to achieve a better waterproof seal.

The assembly process of the novel electrical connector 10 generally includes: A conductive terminal 22 and a grounding metal piece 4 are fixed to the first insulating member 21 by insert molding, thereby manufacturing the lower row terminal module 2; and the second conductive terminal 32 is fixed by insert molding to The second insulating member 31, thereby obtaining the upper row of terminal modules 3; the upper row of terminal modules 3 are mounted from the top to the lower row of terminal modules 2, the composite module 1; The two inner shielding sheets 5 are respectively mounted on the composite module 1; the sealing ring 8 is sleeved to the first receiving channel 18 of the composite module 1; the outer shielding shell 6 is The outer circumference of the composite module 1 is fixed to the rear of the composite module 1; the two sealing holes 19 are formed in the two second receiving channels 19 opening at the top of the insulating body 11 to form two sealing blocks 92 opening in the insulating body 11 The second receiving channel 19 in the bottom is filled with a gel to form a sealing strip 91; finally, the grounding reinforcing shell 7 is fixedly fixed to the outer circumference of the outer shielding shell 6.

A first receiving channel 18 is disposed between the composite module 1 and the outer shielding case 6 , and a sealing ring 8 is disposed on the first receiving channel 18 to seal the composite module 1 and the outside. A plurality of second receiving channels 19 are disposed between the first insulating member 21 and the second insulating member 31 constituting the composite module 1 and are disposed in the second receiving channel 19 The inner filling gel forms a sealing member 9 to sufficiently seal the joint gap between the first insulating member 21 and the second insulating member 31, so as to effectively prevent external water droplets from penetrating backward through the bonding gap of the inner portion of the electrical connector 10 through the mating cavity 69. The electronic device provided with the electrical connector 10 can be well adapted to an application environment with high waterproof requirements.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention, and those skilled in the art according to the present invention The main concept and spirit of the present invention can be easily modified or modified accordingly. Therefore, the scope of protection of this new type should be based on the scope of protection required by the scope of patent application.