CN106898895B

CN106898895B - Socket connector

Info

Publication number: CN106898895B
Application number: CN201710181305.0A
Authority: CN
Inventors: 范俊; 仇金国; 姚涛
Original assignee: Qidong Qianshuo Electronic Co Ltd
Current assignee: Qidong Qianshuo Electronic Co Ltd
Priority date: 2017-03-23
Filing date: 2017-03-23
Publication date: 2023-01-17
Anticipated expiration: 2037-03-23
Also published as: CN106898895A

Abstract

The invention relates to a socket connector which comprises an insulating body, a conductive terminal and a metal shell, wherein the insulating body comprises a first body, a second body and an insulating base body, the conductive terminal comprises a first terminal group and a second terminal group, the first terminal group and the first body form a first terminal module, the second terminal group and the second body form a second terminal module, a middle spacer is clamped and fixed between the first body and the second body, a positioning column and a positioning hole which are mutually inserted are arranged on the joint surface of the first body and the second body, the positioning column comprises a cylindrical root and a quincuncial boss which is convexly arranged at the tail end of the root, the middle spacer is provided with a quincuncial hole, the positioning column is guided to penetrate through the quincuncial hole by matching of the quincuncial boss and the quincuncial hole, the root is fixedly interfered with the quincuncial hole, the positioning column is guided to be inserted into the quincuncial hole by the quincuncial boss, the first body and the second body are conveniently and are accurately positioned with the middle spacer, and the assembly precision of the middle spacer is improved.

Description

Socket connector

Technical Field

The present invention relates to a receptacle connector, and more particularly, to a receptacle connector having a metal center spacer.

Background

With the release of the USB Type-C connector standard, especially supporting the forward and reverse insertion and high frequency transmission, the USB Type-C connector is more and more popular with consumers, the USB Type-C connector has a small volume, a large number of conductive terminals, and high manufacturing difficulty, most manufacturers adopt a terminal insertion molding manner, and refer to a socket connector disclosed in chinese patent publication No. CN105470697a in the related art, which includes a first body, a second body, an insulating base, a first terminal set, a second terminal set, a metal middle spacer and a metal shell, wherein the first terminal set is insert-molded on the first body to form a first terminal module, and the second terminal set is insert-molded on the second body to form a second terminal module. The metal shell is provided with a plug hole, the first body, the second body and the insulating base body jointly form a tongue plate positioned in the plug hole, and the first terminal group and the second terminal group are provided with contact parts arranged on the tongue plate. The spacer is clamped and fixed between the first terminal module and the second terminal module, the three are assembled together, the joint surfaces of the first body and the second body are provided with cylindrical positioning columns and positioning holes which are positioned mutually, the spacer is provided with a round hole for the positioning column to pass through, the spacer does not have a fool-proof function due to the cooperation of the round hole and the positioning column, and when the spacer is assembled, the round hole and the positioning column cannot be accurately aligned, so that the accuracy after the assembly is difficult to guarantee.

Therefore, there is a need to design a new socket connector to solve the above-mentioned technical problems.

Disclosure of Invention

The invention aims to provide a socket connector with improved accurate positioning of a middle spacer.

In order to achieve the purpose, the invention adopts the following technical scheme: a socket connector comprises an insulating body, a plurality of conductive terminals and a metal shell for accommodating the insulating body, wherein the insulating body comprises a first body, a second body and an insulating base body, the insulating body comprises a main body part and a tongue plate extending forwards from the main body part, the metal shell is provided with a plug hole, the tongue plate is positioned in the plug hole, the conductive terminals comprise a first terminal group and a second terminal group, the first terminal group and the first body form a first terminal module, the second terminal group and the second body form a second terminal module, the first terminal group is provided with a first contact part and a first welding pin, the second terminal group is provided with a second contact part and a second welding pin, the first contact parts are arranged on the upper surface of the tongue plate, the second contact parts are arranged on the lower surface of the tongue plate, the middle spacer is clamped and fixed between the first body and the second body, the joint surface of the first body and the second body is provided with a positioning column and a positioning hole which are mutually spliced together, the insulating base body is formed on the first terminal module, the second terminal module and the middle spacer in an injection molding mode, the positioning column comprises a cylindrical root and a quincuncial boss protruding from the tail end of the root, the middle spacer is provided with a quincuncial hole, the quincuncial boss and the quincuncial hole are matched to guide the positioning column to penetrate through the quincuncial hole, and the root and the quincuncial hole are in interference riveting fixation.

The improved structure is characterized in that the bosses comprise four fan-shaped second bosses which are crossed and separated along the circumferential direction, and the second bosses are close to the roots than the first bosses.

In a further improvement, the first boss is provided with a first cross end face, a first guide face and a circumferential face, the first end face is a horizontal face, the first guide face is an arc face or an inclined face, the first guide face extends to the circumferential face from the first end face to the outer side and towards the root direction, and the circumferential face is coplanar with the root.

The second boss is provided with a second end face and a second guide face extending to the outer side face of the root from the second end face in the direction towards the root, the second end face is a horizontal sector face, the second guide face is close to the root compared with the first end face, the second guide face is also arranged to be an arc face or an inclined face, and the second guide face is close to the root compared with the first guide face.

In a further improvement, the first body is provided with a first inner main body part and a first inner tongue plate extending forwards from the first inner main body part, the second body is provided with a second inner main body part and a second inner tongue plate extending forwards from the second inner main body part, the main body part comprises a first inner main body part and a second inner main body part, the tongue plates comprise a first inner tongue plate and a second inner tongue plate, and the positioning columns and the positioning holes are arranged on the first inner tongue plate and the second inner tongue plate.

In a further improvement, one side of the first body is provided with a positioning column, and the other side of the first body is provided with a positioning hole; one side of the second body is provided with a positioning hole which is inserted into the positioning column of the first body, and the other side of the second body is provided with a positioning column which is inserted into the positioning hole of the first body.

In a further improvement, the middle partition is arranged in a two-piece structure which is spaced from the left and the right, and each middle partition is provided with a quincunx hole which is in interference fit with the positioning column.

The insulation base body is further improved, the first body is provided with a plurality of through holes which are spaced from each other left and right, the second body is provided with a plurality of protruding portions which are spaced from each other left and right, the protruding portions are inserted into the through holes one by one and extend out of the through holes, and the protruding portions are fused with the first body together before the insulation base body is subjected to injection molding.

The improved structure is characterized in that a clamping hole and a clamping arm which are mutually clamped together are arranged between the first body and the second body, the clamping hole and the clamping arm are arranged on the main body part, and the middle spacer is provided with a hole for the clamping arm to pass through.

The tongue plate is further improved, the two side faces of the tongue plate are provided with a concave part and a convex part sheltered in front of the concave part, the outer edge of the middle spacer is provided with a locking edge protruding into the concave part and a guiding edge embedded into the convex part, the outer side face of the locking edge is provided with a locking groove positioned in the concave part, and the guiding edge and the outer side face of the convex part are coplanar.

The positioning column of the socket connector comprises a cylindrical root and a quincuncial boss convexly arranged at the tail end of the root, the middle spacer is provided with a quincuncial hole, the quincuncial boss and the quincuncial hole are matched to guide the root to penetrate through the quincuncial hole, the root and the quincuncial hole are in interference riveting fixation, the positioning column is guided to be inserted into the quincuncial hole through the quincuncial boss, the first body, the second body and the middle spacer are conveniently and accurately positioned, and the assembly precision of the middle spacer is improved.

Drawings

Fig. 1 is a perspective view of the socket connector of the present invention.

Fig. 2 is an exploded perspective view of the receptacle connector of the present invention.

Fig. 3 is an enlarged view within a circle of fig. 2.

Fig. 4 is a perspective view of the first and second terminal modules and the middle spacer of the socket connector of the present invention assembled together.

Fig. 5 is an exploded perspective view of fig. 3, showing the first and second terminal modules separated.

Fig. 6 is a cross-sectional view of the septum of the receptacle connector of the present invention assembled down to a second terminal module.

Fig. 7 is an enlarged view within a circle of fig. 6.

Fig. 8 is a perspective view of the insulating base of the receptacle connector of the present invention injection molded on the first and second terminal modules and the middle spacer.

Detailed Description

Referring to fig. 1 to 7, a socket connector 100 of the present invention is a USB Type-C socket connector for being mounted on a circuit board (not shown) for being plugged with a mating connector (not shown). The receptacle connector 100 includes an insulative housing 10, conductive terminals 20, a metal spacer 30, a metal shell 40, a fixing steel plate 50, a waterproof gasket 60 and a waterproof module 70.

The insulation body 10 includes a first body 11, a second body 12 located below the first body 11, and an insulation base 13 injection molded (0 ver molding) on the first and

second bodies

11, 12. The insulating body 10 further includes a main body 14 and a tongue plate extending forward from the main body 14, the tongue plate includes a first tongue plate 15 and a second tongue plate 16, the second tongue plate 16 connects the main body 14 and the first tongue plate 15, and the first tongue plate 15 protrudes forward from the second tongue plate 16. The first flap 15 is smaller in width and thickness than the second flap 16. The first body 11 has a first inner body 141 and a first inner tongue 151 extending forward from the first inner body 141. The second body 12 has a second inner main body 142 and a second inner tongue 152 extending forward from the second inner main body 142, and the main body 14 includes first and second inner

main bodies

141, 142, and the tongue includes first and second

inner tongues

151, 152.

The first body 11 is provided with a plurality of through holes 110 which penetrate through the first body 11 up and down, each through hole 110 is spaced from the left and right, the second body 12 is provided with a plurality of protruding parts 120 which protrude upwards, the protruding parts 120 are of a vertical plate-shaped structure and are inserted into the through holes 110 one by one and protrude upwards out of the first body 11, the insulating base body 13 is subjected to injection molding (over molding) before the first body 11 and the second body 12, the protruding parts 120 and the first body 11 are fused together by a high-temperature head melting jig, and the first tongue plate 15 and the second tongue plate 16 are prevented from falling off before the insulating base body 13 is subjected to injection molding.

The through hole 110 and the protruding portion 120 are disposed on the second tongue plate 16, and the left and right sides of the first tongue plate 15 are disposed with a recess 154 and a protruding portion 155 covering the front of the recess 154.

The first and

second bodies

11, 12 are provided with two positioning posts 121 and two circular positioning holes 122 at the joint surfaces, wherein the positioning posts 121 and the positioning holes 122 are spaced from each other in the left-right direction and are inserted into each other, and the positioning posts 121 and the positioning holes 122 are provided on the first tongue plate 15. One side of the first body 11 is provided with a positioning post 121, the other side is provided with a positioning hole 122, one side of the second body 12 is provided with a positioning hole 122 matched with the positioning post 121 of the first body 11, and the other side is provided with a positioning post 121 matched with the positioning hole 122 of the first body 11.

The positioning post 121 includes a cylindrical root 124 and a quincunx boss 125 protruding from the tail end of the root 124, the boss 125 includes a cross-shaped first boss 126 and four fan-shaped second bosses 127 spaced apart from the first boss along the circumferential direction, the second bosses 127 are closer to the root 124 than the first bosses 126, the first bosses 126 have cross-shaped first end surfaces 1261, first guide surfaces 1262 and circumferential surfaces 1263, the first end surfaces 1261 are horizontal surfaces, each first guide surface 1262 is an arc surface or an inclined surface extending from four outer ends of the first end surfaces 1261 to the circumferential surfaces 1263 in the direction of the root 124, and the circumferential surfaces 1163 are coplanar with the root 124.

The second boss 127 has a second end face 1271 and a second guide face 1272 extending from the second end face 1271 toward the outer side of the root 124, wherein the second end face 1271 is a horizontal sector closer to the root 124 than the first end face 1261. The second guide surface 1172 is also provided as an arc or inclined surface closer to the root 124 than the first guide surface 1262.

The left and right sides of the first body 11 are further provided with vertically penetrating buckling holes 113, the left and right sides of the second body 12 are provided with upwards extending buckling arms 123, the buckling arms 123 are buckled in the corresponding buckling holes 113 one by one, so that the rear ends of the first body 11 and the second body 12 are buckled together, and the buckling holes 113 and the buckling arms 123 are arranged at the rear end of the main body part 14.

In other embodiments, the protrusion 120 is disposed on the first body 11, and the through hole 110 is disposed on the second body 12.

The conductive terminal 20 includes a first terminal set 21 and a second terminal set 22, the first terminal set 21 is insert-molded on the first body 11 to form a first terminal module 210, and the second terminal set 220 is insert-molded on the second body 12 to form a second terminal module 220. The first terminal set 21 has a first contact portion 211 and a first soldering foot 212, and the second terminal set 22 has a second contact portion 221 and a second soldering foot 222. The first contact portion 211 is disposed on the upper surface of the first tongue plate 15, the second contact portion 221 is disposed on the lower surface of the first tongue plate 15, and the first and

second soldering pins

212, 222 extend out of the insulating body 10 and are arranged in a row for being soldered on a circuit board.

The middle spacer 30 is a two-piece structure with left and right spacing and left and right symmetry, and is clamped and fixed between the first and

second bodies

11, 12, the outer edge of the middle spacer 30 is provided with a locking edge 31 protruding into the recess 154 of the first tongue plate 15 and a guiding edge 32 embedded into the protrusion 155 of the first tongue plate 15, the outer side surface of the locking edge 31 is provided with a locking groove 311 positioned in the recess 154 for locking the locking piece of the mating connector, and the common surface of the outer side surfaces of the guiding edge 32 and the protrusion 155 is used for guiding the locking piece to enter the recess 154. The middle spacer 30 has a fixing leg 33 bent and extended downward at the rear end for fixing or soldering on the circuit board. Two quincunx holes 36 for the positioning columns 121 of the insulating body 10 to pass through and an opening 34 for the buckling arms 123 to pass through are formed in the inner side of the middle spacer 30, so that the middle spacer 30 can be conveniently assembled on the first body 11 and the second body 12, and the opening 34 penetrates through the middle spacer 30 up and down.

The metal housing 40 is made by metal powder injection molding (MIM), and includes a top wall 41, a bottom wall 42, two side walls 43, and a plug hole 45 located between the top wall 41, the bottom wall 42, and the two side walls 43, the insulation body 10 is accommodated in the metal housing 40, the first and

second tongue plates

15, 16 are located in the plug hole 45, the first tongue plate 15 further protrudes forward from the metal housing 40, and the first and

second contact portions

211, 221 are exposed to the plug hole 45 for contacting with the mating connector. The two side walls 43 are further provided with a horizontal fixing plate 431 extending outward for fixing to the circuit board and a fixing leg 432 extending downward, the fixing plate 431 is provided with a fixing hole 433 penetrating vertically, and the fixing leg 432 is located at the rear end of the side wall 43.

The fixing steel sheet 50 is a rectangular frame, and is assembled forward in the metal housing 40 and pressed forward against the insulating body 10, and the fixing steel sheet 50 is integrated with the metal housing 40 by welding.

The waterproof gasket 60 is annular and is formed on the outer side surface of the front end of the metal shell 40 by liquid silica gel injection molding (LIM).

The waterproof module 70 is also formed at the rear end of the insulating body 10 by injection molding of liquid silicone rubber, and fills the gap between the insulating body 10 and the metal shell 50, thereby achieving the waterproof function.

When the spacer 30 is assembled with the first and

second terminal modules

210 and 220 in the receptacle connector 100 of the present invention, first, the first guiding surface 1262 of the first boss 126 of the positioning post 121 abuts against the inner side wall of the plum blossom hole 36 of the spacer 30, the spacer 30 moves to the second end surface 1271 in the direction of the root portion 124, then the second guiding surface 1272 abuts against the inner side wall of the plum blossom hole 36, the spacer 30 continues to move in the direction of the root portion 124, the root portion 124 passes through the plum blossom hole 36, and is interference-riveted with the plum blossom hole 65, and the first and

second bodies

11 and 12 and the spacer 30 are conveniently and accurately positioned by the guidance of the first guiding surface 1262 and the second guiding surface 1272, so as to improve the assembling accuracy of the spacer 30.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A socket connector comprises an insulating body, a plurality of conductive terminals and a metal shell for accommodating the insulating body, wherein the insulating body comprises a first body, a second body and an insulating base body, the insulating body comprises a main body part and a tongue plate extending forwards from the main body part, the metal shell is provided with a plug hole, the tongue plate is positioned in the plug hole, the conductive terminals comprise a first terminal group and a second terminal group, the first terminal group and the first body form a first terminal module, the second terminal group and the second body form a second terminal module, the first terminal group is provided with a first contact part and a first welding pin, the second terminal group is provided with a second contact part and a second welding pin, the first contact part is arranged on the upper surface of the tongue plate, the second contact part is arranged on the lower surface of the tongue plate, a middle partition plate is clamped and fixed between the first body and the second body, a positioning column and a positioning hole which are mutually plugged together are arranged on the joint surfaces of the first body and the second body, and the insulating base body is injection-molded on the first module terminal and the middle partition plate, and the insulating base body, and the socket connector is characterized in that: the reference column includes columniform root and the protruding plum blossom boss of locating the root tail end, well spacer is equipped with the plum blossom hole, the plum blossom boss passes the plum blossom hole with the cooperation guide reference column of plum blossom hole, the root is interfered the riveting with the plum blossom hole and is fixed, the boss includes four fan-shaped second bosss that first boss of cross and first boss separated along the circumferencial direction, the second boss is close to in the root than first boss, first boss has criss-cross first terminal surface, first terminal surface is the horizontal plane, the second boss has the second terminal surface, the second terminal surface is the horizontally sector, relatively first terminal surface is close to in the root.

2. The receptacle connector according to claim 1, wherein: the first boss is provided with a first guide surface and a circumferential surface, the first guide surface is an arc surface or an inclined surface, the first guide surface extends to the circumferential surface from the first end surface to the outer side and towards the root direction, and the circumferential surface is coplanar with the root.

3. The receptacle connector according to claim 2, wherein: the second boss is provided with a second guide surface extending to the outer side surface of the root from the second end surface towards the root direction, and the second guide surface is also provided as an arc surface or an inclined surface and is closer to the root than the first guide surface.

4. The receptacle connector according to claim 1, wherein: the first body is provided with a first inner main body part and a first inner tongue plate extending forwards from the first inner main body part, the second body is provided with a second inner main body part and a second inner tongue plate extending forwards from the second inner main body part, the main body part comprises a first inner main body part and a second inner main body part, the tongue plates comprise a first inner tongue plate and a second inner tongue plate, and the positioning columns and the positioning holes are arranged on the first inner tongue plate and the second inner tongue plate.

5. Socket connector according to one of claims 1 to 4, wherein: one side of the first body is provided with a positioning column, and the other side of the first body is provided with a positioning hole; one side of the second body is provided with a positioning hole which is spliced with the positioning column of the first body, and the other side of the second body is provided with a positioning column which is spliced with the positioning hole of the first body.

6. The receptacle connector according to claim 1, wherein: the middle partition is arranged in a two-piece structure with a left space and a right space, and each middle partition is provided with a quincuncial hole in interference fit with the positioning column.

7. The receptacle connector according to claim 1, wherein: the first body is provided with a plurality of through holes which are spaced from each other left and right, the second body is provided with a plurality of protruding portions which are spaced from each other left and right, the protruding portions are inserted into the through holes one by one and extend out of the through holes, and the protruding portions are fused with the first body together before the injection molding of the insulating base body.

8. The receptacle connector according to claim 1, wherein: the first body and the second body are provided with a buckle hole and a buckle arm which are mutually buckled together, the buckle hole and the buckle arm are arranged on the main body part, and the middle spacer is provided with a hole for the buckle arm to pass through.

9. The receptacle connector according to claim 1, wherein: the tongue plate is characterized in that concave parts and convex parts sheltered in the front of the concave parts are arranged on two side faces of the tongue plate, locking edges protruding into the concave parts and guiding edges embedded into the convex parts are arranged on the outer side edges of the middle spacers, locking grooves located in the concave parts are arranged on the outer side faces of the locking edges, and the guiding edges are coplanar with the outer side faces of the convex parts.