CN103490211B - Micro coaxial cable connector assembly - Google Patents

Abstract

A cable connector assembly, comprising an insulating body (2), a conductive terminal (1) accommodated in the insulating body (2), a cable (7) electrically connected to the conductive terminal (1), and a The metal shell (8) outside the insulating body (2) and the cover (6) assembled on the metal shell (8), the front end of the cover (6) is accommodated in the metal shell (8) and connected with the metal The shells (8) are mutually positioned, and the cable connector assembly also includes a clamping piece (5) assembled on the front end of the cover (6). The clamping piece (5) is provided with several (8) Clamping arm (52) for inner surface interference. The cable connector assembly of the present invention has an improved clamping part, so that the overall structure is short and small, meeting the requirement of miniaturization, and effectively avoiding weak contact between the metal shell and the clamping part while ensuring good anti-electromagnetic interference performance.

Description

Cable Connector Assembly

【Technical field】

The invention relates to a cable connector assembly, in particular to a cable connector assembly for high-speed signal transmission.

【Background technique】

For the prior art related to this patent application, please refer to the Chinese patent CN101425650B published on September 7, 2011. This prior art discloses a cable connector assembly, which includes an insulating body, a first A group of terminals and a second group of terminals, a metal casing covering the insulating body and the first and second groups of terminals, an outer insulating casing covering the rear end of the metal casing, and cables connected to the terminals.

However, under the trend of decreasing size of electronic products, the configuration of the above-mentioned cable connector assembly is large, which cannot meet the requirement of miniaturization.

Therefore, it is necessary to design a low profile and short cable connector assembly to overcome the above problems.

【Content of invention】

It is an object of the present invention to provide a low profile and compact cable connector assembly.

In order to achieve the above purpose, the present invention can adopt the following technical solutions: a cable connector assembly, which includes an insulating body, a conductive terminal accommodated in the insulating body, a cable electrically connected to the conductive terminal, and a cable coated on the insulating body The outer metal shell and the cover assembled behind the metal shell. The front end of the cover is accommodated in the metal shell and positioned with the metal shell. The cable connector assembly also includes a cover assembled at the front end of the cover. The clamping piece is provided with a number of clamping arms that interfere with the inner surface of the metal shell.

Compared with the prior art, the structure of the cable connector assembly of the present invention is short and small, which meets the requirement of miniaturization, and effectively avoids the weak contact between the metal shell and the holding member while ensuring good anti-electromagnetic interference performance.

【Description of drawings】

FIG. 1 is a three-dimensional assembled view of the cable connector assembly of the present invention.

FIG. 2 is an exploded perspective view of the cable connector assembly shown in FIG. 1 .

FIG. 3 is another perspective exploded view of the cable connector assembly shown in FIG. 2 .

FIG. 4 is a partially exploded view of the cable connector assembly shown in FIG. 1 with the metal shell removed.

FIG. 5 is a schematic diagram of another angle of FIG. 4 .

FIG. 6 is a partially assembled view of a portion of the cable connector assembly shown in FIG. 4 .

FIG. 7 is a schematic diagram of the assembly of the metal shell and the cover in the cable connector assembly shown in FIG. 1 .

【detailed description】

1 to 7, the cable connector assembly 1000 of the present invention includes an insulating body 2, a plurality of conductive terminals 1 accommodated in the insulating body 2, and cables 7 electrically connected to the conductive terminals 1 are covered in an insulating body. The metal shell 8 outside the body 2 is assembled to the cover 6 behind the metal shell 8 , and is assembled to the clamping member 5 at the front end of the cover 6 .

The insulating body 1 is a two-piece structure and includes a first body 21 and a second body 22 assembled together along the vertical direction. The first body 21 includes a first body portion 23 , a tongue portion 24 extending forward from the first body portion 23 , and a support portion 25 extending backward from the first body portion 23 . The two sides of the first main body 23 respectively extend upwards to form a pair of blocking walls 231, and the inner surface of each blocking wall 231 is provided with a vertically extending guide groove 232, and the guiding grooves 232 on the blocking wall 231 of the first main body 23 are opposite to each other. set up. The outer side of the blocking wall 231 protrudes outward to form an interference portion 233 and a blocking block 234 , wherein the blocking block 234 is located at a rear side of the blocking wall 231 and protrudes more outside than the interference portion 233 . The inner side of the blocking wall 231 is also provided with a plurality of ribs 235 to strengthen the interference fit between the first body 21 and the second body 22 after assembly. A plurality of first receiving grooves 241 are arranged side by side at the front of the tongue 24, and a plurality of second receiving grooves 242 are arranged behind the first receiving grooves 241. not aligned. A lower surface of the support portion 25 is recessed with a plurality of third receiving grooves 251 , and the first receiving grooves 241 are aligned with the corresponding third receiving grooves 251 along the front-rear direction. A plurality of fourth receiving grooves 252 are recessed on the upper surface of the supporting portion 25 .

The second body 22 is substantially rectangular, and has five "convex"-shaped receiving passages 221 passing through the second body 22 along the front and rear directions. The front edge of the upper surface of the second body 22 slopes downward to form a depression 222, and the two sides of the second body 22 respectively protrude outwards with protruding parts 223, and the protruding parts 223 are arranged on the outer side wall of the second body 22 along the up and down direction for storage. in the guide groove 232 .

The conductive terminal 1 includes a number of first terminals 3 and a number of second terminals 4. In this embodiment, the number of first terminals 3 includes four conductive terminals whose structure and arrangement conform to the USB2.0 type connector. A terminal 3 is a power terminal, a negative signal terminal, a positive signal terminal and a ground terminal respectively. The first terminal 3 is embedded and molded in the first body 21, and the first terminal 3 includes a first holding part 31 embedded in the first body 21, and the first holding part 31 is bent upwards and extends forward horizontally. The first contact portion 32 and the first welding portion 33 extending rearwardly from the first holding portion 31 , a first groove 331 is formed on the lower surface of the first welding portion 33 for wire bonding. The front end of each first contact portion 32 is bent downward to form a head portion 321 , and the head portion 321 is embedded in the front portion of the first receiving groove 241 of the first body 11 . The first contact portion 32 is received in the first receiving groove 241 of the tongue portion 24 of the first body 21 and the first welding portion 33 is received in the third receiving groove 251 of the support portion 25 of the first body 21 .

In this embodiment, the second terminal 4 includes two pairs of differential signal terminals and one ground terminal. Among the two pairs of differential signal terminals, one pair of differential signal terminals is used for outputting high-speed signals, and the other pair of differential signal terminals is used for receiving high-speed signals. The ground terminal is located between each pair of differential signal terminals to reduce crosstalk generated when the differential signal terminals transmit high-speed signals. The second terminal 4 includes a second holding portion 41 provided with several barbs 411, a curved second contact portion 42 extending forward from the second holding portion 41, and a second welding portion extending backward from the second holding portion 41. 43 , the second welding portion 43 is recessed to form a second groove 431 to facilitate the welding wire. The second contact portion 42 extends from the front end of the second body 22 and is accommodated in the second receiving groove 242, and the second welding portion 43 extends beyond the rear end of the second body 22 and is accommodated in the fourth receiving groove 252 to connect with the cable 7. Wire 71 is welded.

The clamping part 5 is stamped and formed by a metal plate, and the clamping part 5 is assembled on the front end of the cover body 6, which includes a clamping ring 54, a trunk part 50 extending from the front end of the clamping ring 54 to the left and right, and a main part 50 bent and extended backward. The clamping arm 52 is elastic and interferes with the inner surface of the metal housing 8 . The clamping ring 54 is looped around the cable 7 . The main body 50 includes two left and right wing parts 51, the two wing parts 51 are distributed on the left and right sides of the clamping ring 54, the wing part 51 has a rear surface 512, and the clamping arm 52 is respectively bent and extended from the surroundings of the two wing parts 51 form. In this embodiment, there are six clamping arms 52, which are respectively an upper clamping arm 521 and a lower clamping arm 522 bent backward from the middle of the upper and lower edges of the left and right wings, and the middle of the left and right edges is bent backward The extended left clamping arm 523 and the right clamping arm 524 are formed. The clamping arm 52 can be in parallel with the upper and lower surfaces as shown in FIG. 5 , or can be in various configurations with a protruding middle part or other local protruding or bending.

The cover body 6 is made of injection-molded insulating material, and includes a main body portion 61 , a positioning portion 60 extending forward from the main body portion 61 , and a stress releasing portion 64 extending backward from the main body portion 61 . The front end of the cover 6 is a positioning portion, which is accommodated in the metal shell 8 and positioned with the metal shell 8 . The stress releasing portion 64 is tubular and surrounds the cable 7 . The positioning portion 60 includes two spaced positioning blocks 62 , and the positioning blocks 62 are respectively provided with an upper wall 621 , a lower wall 622 , a side wall 623 and a front wall 620 . A protrusion 65 is disposed on the side wall 623 of the positioning block 62 of the cover body 6 .

The cable 7 includes several metal wires 71 , an insulating layer 72 and a braiding layer (not shown) between the metal wires 71 and the insulating layer 72 .

The metal shell 8 is integrally formed by bending a metal plate. The metal shell 8 has a rectangular shape and has a receiving cavity 80 passing through the front and rear for receiving the insulating body 2 . The upper surface of the front end 81 of the metal shell 8 is provided with a pair of slots 811 that are in contact with the docking connector.

During assembly, the first terminal 3 is embedded in the first body 21 to form a first module, and the head 321 of the first terminal 3 is embedded in the first body 21 . The second terminal 4 is inserted into the receiving groove 221 of the second body 22 from back to front to form a second module, and is positioned in the second body 22 through the holding portion 41 . Then assemble the second module group on the first module group from top to bottom, the second module group is located between the blocking walls 231 of the first module group to limit it in the lateral direction, wherein the second body The protrusion 223 of the second body 22 slides into the guide groove 232 of the first body 21 to prevent it from sliding relative to the mating direction. The protrusion 223 of the second body 22 and the guide groove 232 of the first body 21 together form a first The guiding and positioning structure between the module and the second module, the convex rib 235 is used to enhance the interference fit between the blocking wall 231 of the first body 21 and the side wall of the second body 22, and prevent the first body 21 from contacting the second body. Displacement occurs between the bodies 22 in the up and down direction. The second contact portion 42 of the second terminal 4 protrudes from the front of the second body 22 and is located in the second receiving groove 242 of the first body 21 . The second welding portion 43 of the second terminal 4 is received in the fourth receiving groove 252 of the first body 21 . The wire 71 of the cable 7 is welded to the first and second welding portions 33 and 43 of the first and second terminals 3 and 4 respectively.

Next, clamp and fix the clamping member 5 on the folded braided layer of the cable 7, and assemble the stress relief part 64 of the cover body 6 on the insulating layer 72 of the cable 7 from the back to the front. Adhesives such as some glue are coated on the insulating layer of the nearby cable 7 to fix the cover 6 on the cable 7 and assembled at the rear of the clamping member 5 . The main portion 50 of the holding member 5 is abutted against the front end of the positioning portion 60 of the cover 6 , and the holding arm 52 of the holding member 5 covers the outer wall of the cover 6 . At the same time, the front wall surface 620 of the positioning block 62 of the cover body 6 is attached to the rear surface 512 of the two wings 51 of the holding member 5, and each holding arm 52 on the holding member 5 is respectively pressed against the positioning block 62 of the cover body 6. of the walls. Wherein, the upper and lower arms 52 of the clamping member 5 respectively bear against the upper wall surface 621 and the lower wall surface 622 of the positioning block 62, and the left and right arms 53 of the clamping member 5 respectively bear against the two side wall surfaces 623 of the positioning block 62. .

Next, assemble the metal shell 8 on the insulator body 2 and the cover 6 from front to back, the insulator body 2 is accommodated in the accommodation cavity 80 of the metal shell 8, the notch 821 on the metal shell 8 and the notch 821 on the cover 6 The bump 65 engages. At the same time, the clamping arm 52 on the clamping member 5 abuts against the inner wall of the metal shell 8 and interferes with the inner wall of the metal shell 8 . The clamping arms 52 are distributed in all directions of the clamping member 5, and interfere with the inner wall of the metal shell 8 in all directions, so that while ensuring good anti-electromagnetic interference performance, the metal shell 8 and the clamping component can also be avoided. 5 The contact is not firm.

Claims (10)

1. A cable connector assembly, which includes an insulating body, a conductive terminal accommodated in the insulating body, a cable electrically connected to the conductive terminal, a metal shell wrapped outside the insulating body, and a metal shell assembled in the metal shell The rear cover is characterized in that: the front end of the cover is a positioning part, the positioning part is accommodated in the metal shell and positioned with the metal shell, and the cable connector assembly also includes a The clamping piece at the front end of the body is provided with a number of clamping arms that interfere with the inner surface of the metal shell. 2. The cable connector assembly according to claim 1, wherein the clamping arms are distributed around the clamping member. 3. The cable connector assembly according to claim 2, characterized in that: the clamping member comprises a clamping ring, a main body extending from the front end of the clamping ring to the left and right, and the clamping arm is formed by the The four sides of the main body are respectively bent and extended backwards, and the clamping ring is looped around the cable. 4. The cable connector assembly according to claim 3, wherein the main body comprises two wings located on both sides of the clamping ring, and the clamping arm is formed on the wings . 5. The cable connector assembly according to claim 1, wherein the cover further includes a main body, the positioning portion is formed by extending forward from the main body, and the holding member includes a rear The main part of the surface, the front wall surface of the positioning part is attached to the rear surface of the holding part. 6 . The cable connector assembly according to claim 5 , wherein the positioning portion of the cover comprises two left and right spaced square positioning blocks. 7. The cable connector assembly according to claim 5, wherein the cover further comprises a tubular stress relief portion extending backward from the main body, and the stress relief portion surrounds the cable outside. 8. The cable connector assembly according to claim 7, wherein the cover is fixed to the cable by an adhesive. 9. The cable connector assembly according to claim 1, characterized in that: there are protrusions on both sides of the cover, the metal shell is an integral structure, and the two side walls of the rear end of the metal shell There are respectively provided notches that are fastened with the protrusions on the cover. 10. The cable connector assembly according to claim 1, wherein the conductive terminal comprises a first terminal and a second terminal, and the insulating body comprises a first body and a second body assembled in an up-down direction.