CN220753822U

CN220753822U - Automatic connector of cartridge fixing

Info

Publication number: CN220753822U
Application number: CN202322490930.7U
Authority: CN
Inventors: 王坚波; 王伟
Original assignee: Shenzhen Jinling Electronics Co ltd
Current assignee: Shenzhen Jinling Electronics Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-09
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses an automatic plug-in fixed connector which is used for being installed on a circuit board, wherein the connector is elastically plugged on the circuit board along the installation direction and forms non-welding electric contact with the circuit board; the connector comprises a shell and a plurality of connecting terminals inserted in the shell along the installation direction, wherein one end of each connecting terminal, corresponding to the circuit board, is provided with an elastic contact part exposed out of the shell, and the elastic contact part is elastically inserted in the circuit board. Compared with the prior art, the elastic contact part is elastically contacted with the circuit board through elastic deformation, so that the electric contact between the connecting terminal and the circuit board is realized, the connecting terminal and the circuit board are not required to be welded in the whole process, the time and the labor are saved, the improvement of the assembly efficiency of the connector is facilitated, and the connector is simple in structure and convenient to operate.

Description

Automatic connector of cartridge fixing

Technical Field

The utility model relates to the technical field of electric connectors, in particular to an automatic plug-in fixed connector.

Background

The electrical connector, which is an interconnection structure between two or more electronic components, generally includes a housing and a connection terminal, wherein the housing is supported or enclosed outside the connection terminal, and one end of the connection terminal is exposed from a corresponding position of the housing to be connected with a circuit board on the electronic component, so as to realize signal transmission.

When the existing connector is connected with a circuit board, the connecting terminals are usually inserted or positioned at the positions of bonding pads of the circuit board, and then the connecting terminals are welded on the corresponding bonding pads one by one through solder; and the consistency of the solder consumption and the size of the bonding pad at each welding spot position cannot be ensured, thereby influencing the contact stability.

Disclosure of Invention

Therefore, the present utility model is directed to an automatic plug-in connector, which solves the problems of low production efficiency and poor consistency of solder usage and pad size caused by time and effort for soldering connection terminals in the prior art.

In order to achieve the above-mentioned purpose, the present utility model provides an automatic-plugging-fixing connector for mounting on a circuit board, the connector being elastically plugged on the circuit board along a mounting direction and forming a solderless electrical contact with the circuit board; the connector comprises a shell and a plurality of connecting terminals inserted in the shell along the installation direction, wherein one end of each connecting terminal, corresponding to the circuit board, is provided with an elastic contact part exposed out of the shell, and the elastic contact part is elastically inserted in the circuit board.

Further, a terminal groove is formed in the housing in a penetrating manner at a position corresponding to the connecting terminal, the terminal groove is provided with a first opening part close to the circuit board and a second opening part far away from the circuit board, a stop step is arranged on the inner wall of the second opening part of the terminal groove, and the connecting terminal is inserted into the terminal groove from the first opening part of the terminal groove and is stopped at the stop step.

Further, the connecting terminal comprises a clamping part clamped in one end of the terminal groove corresponding to the first opening part and a clamping part arranged on the clamping part and extending to one end of the second opening part of the terminal groove, and the free end of the clamping part is abutted against the stop step so as to realize the stop of the connecting terminal in the installation direction; the elastic contact part is arranged on the clamping part and corresponds to one end far away from the clamping part.

Further, the clamping portion comprises a first clamping section, a second clamping section and a connecting section, wherein the first clamping section and the second clamping section are oppositely arranged, the connecting section is connected with the first end of the first clamping section and the first end of the second clamping section, one side of the connecting section, which is opposite to the first clamping section and the second clamping section, is propped against the first side wall of the terminal groove, the second end, which is far away from the connecting section, of the first clamping section, the second end, which is far away from the connecting section, of the second clamping section is clamped with the second side wall of the terminal groove, and the second side wall is oppositely arranged with the first side wall.

Further, a first salient point in interference fit with the second side wall is arranged on one side of the second end of the first clamping section, and a second salient point in interference fit with the second side wall is arranged on one side of the second end of the second clamping section.

Further, the clamping part comprises a first clamping piece and a second clamping piece which are oppositely arranged on the clamping part, the first clamping piece and the second clamping piece are obliquely arranged inwards and form a clamping gap with a variable cross section on the inner sides of the first clamping piece and the second clamping piece, and the free ends of the first clamping piece and the second clamping piece are obliquely arranged outwards and form a guide opening communicated with the clamping gap.

Further, the circuit board is provided with a contact hole for the elastic contact part to be elastically inserted;

the elastic contact part comprises a floating section integrally arranged on the clamping part, an elastic section integrally arranged at one end of the self-floating section far away from the clamping part and an extension section integrally arranged at one end of the elastic section far away from the floating section, and the elastic section is elastically inserted into the contact hole.

Further, the elastic segment is defined with a bending structure having a variable bending radius after being stressed, and the bending radius of the elastic segment is at least larger than the radius of the contact hole when the elastic segment is not stressed, so that the elastic segment can be elastically compressed in the radial direction in the contact hole.

Further, the plurality of connection terminals are regularly arranged in the shell to form a plurality of first terminal groups and a plurality of second terminal groups, the plurality of first terminal groups and the plurality of second terminal groups are arranged at intervals along the transverse intersection of the shell, and each first terminal group and each second terminal group comprises a plurality of connection terminals arranged along the longitudinal direction of the shell.

Further, the terminals of the first terminal group and the connection terminals of the second terminal group are disposed in opposite directions in the lateral or longitudinal direction.

According to the utility model, the elastic contact part exposed out of the shell is arranged on the connecting terminal, and the elastic contact part is elastically matched with the inner wall of the contact hole on the circuit board, so that the elastic contact part can lean against the inner wall of the contact hole after being inserted into the circuit board, thereby fixing the connecting terminal, and the connecting terminal is not required to be welded one by one, so that the time of a welding process can be effectively saved, and the production efficiency can be improved; meanwhile, the connecting terminals are in one-to-one correspondence with the contact holes, and when the connecting terminals are matched with the contact holes, the connecting and fixing of all the connecting terminals can be realized at one time, and the assembly time of the connecting terminals and the contact holes can be further shortened, so that the production efficiency is further improved.

Drawings

Fig. 1 is a schematic structural view of an automatic-plugging-fixing connector according to the present utility model.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is an internal cross-sectional view of fig. 1.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic layout view of the first terminal set and the second terminal set.

Fig. 6 is a schematic structural view of a single connection terminal.

The specification reference numerals are as follows:

a circuit board 100, a contact hole 110;

the terminal comprises a housing 200, a terminal groove 210, a first opening 211, a second opening 212, a stop step 220 and a step surface 230;

the connecting terminal 300, the clamping part 310, the first clamping section 311, the second clamping section 312, the connecting section 313, the first bump 314, the second bump 315, the clamping part 320, the first clamping piece 321, the second clamping piece 322, the clamping gap 323 and the guide opening 324;

an elastic contact part 400, a floating section 410, an elastic section 420, and an extension section 430;

a first terminal set 510, a second terminal set 520.

Detailed Description

The following is a further detailed description of the embodiments:

examples

Referring to fig. 1, 2 and 3, the connector with automatic plugging and fixing function of the present utility model is used for being mounted on a circuit board 100, and the connector is elastically plugged and combined with the circuit board 100, and can form electrical contact with the circuit board 100 in a solderless manner so as to realize interconnection conduction between electronic components; in this embodiment, the circuit board 100 is provided with a plurality of regularly arranged contact holes 110, and contact pads (not shown) are preferably disposed on the inner walls of the contact holes 110, and the contact pads are preferably made of solder material, so as to facilitate electrical conduction between the circuit board 100 and the connector. For convenience of explanation of the present utility model, the X-axis direction is defined as a transverse or longitudinal direction, the Y-axis direction is defined as a longitudinal or width direction, and the Z-axis direction is defined as a vertical or thickness direction, by taking the view direction shown in fig. 1 as an example, and the connector is mounted on the circuit board 100 along the Z-axis direction, so the Z-axis direction may also be the mounting direction of the connector.

The connector capable of being automatically inserted and fixed comprises a shell 200 and a plurality of connecting terminals 300 inserted in the shell 200 along the installation direction, wherein the shell 200 is supported on a circuit board 100, one end of each connecting terminal 300 corresponding to the circuit board 100 is exposed out of the shell 200, one end of each connecting terminal 300 exposed out of the shell 200 is provided with an elastic contact part 400, and the elastic contact part 400 is elastically inserted in the circuit board 100 so as to realize solderless electric contact with the circuit board 100. In this embodiment, the number of the contact holes 110 and the number of the connection terminals 300 are arranged in a one-to-one correspondence, and the connection terminals 300 are arranged in the housing 200 in the same rule as the contact holes 110, so that the elastic contact portions 400 can be connected in a one-to-one correspondence to the contact holes 110, and each connection terminal 300 can be electrically contacted with a contact pad of one contact hole 110. Of course, in other embodiments, the number of the contact holes 110 may be greater than the number of the connection terminals 300, so long as it is ensured that one connection terminal 300 has one corresponding contact hole 110.

Terminal grooves 210 are formed in the housing 200 at positions corresponding to the connection terminals 300, the terminal grooves 210 penetrate the housing 200 in the mounting direction, a number of terminal grooves 210 corresponding to the connection terminals 300 are provided in the housing 200, and the connection terminals 300 are inserted into the terminal grooves 210 in a one-to-one correspondence. In this embodiment, four insertion grooves are disposed in the housing 200 along the transverse direction, and four terminal grooves 210 are disposed in each insertion groove along the longitudinal direction, so that the complementary connector with a corresponding structure can be electrically contacted with the connection terminal 300 after being mated with the terminal groove 210. It should be understood that the number and arrangement of the terminal slots 210 shown in the present embodiment are merely examples of the present utility model, and are not limiting, and the number and arrangement of the terminal slots 210 can be adaptively adjusted according to specific requirements in specific implementations.

Referring to fig. 4, the terminal slot 210 has a first opening 211 closer to the circuit board 100 and a second opening 212 farther from the circuit board 100, that is, the first opening 211 and the second opening 212 are vertically disposed at two ends of the terminal slot 210, and the connection terminal 300 is inserted into the terminal slot 210 from the first opening 211 and is limited at the second opening 212, and the terminal of the complementary connector is elastically contacted with the connection terminal 300 after being inserted from the second opening 212, so as to realize the interconnection conduction between the connector of the embodiment and the complementary connector. To position the connection terminal 300, a stop step 220 is disposed on the inner wall of the second opening 212 of the terminal slot 210, and the stop step 220 is specifically a step surface 230 facing the first opening 211, so that after the connection terminal 300 is inserted into the terminal slot 210 from the first opening 211 of the terminal slot 210, the end of the connection terminal 300 can abut against the step surface 230, so that the stop step 220 stops the connection terminal 300, and the connection terminal 300 is prevented from penetrating out of the terminal slot 210 along the installation direction.

Referring to fig. 5, a plurality of connection terminals 300 of the present embodiment are regularly arranged in the housing 200 to form a plurality of first terminal groups 510 and a plurality of second terminal groups 520, and each of the first terminal groups 510 and the second terminal groups 520 may include a plurality of connection terminals 300 with the same number or may include a plurality of connection terminals 300 with different numbers so as to adapt to different complementary connectors to be connected thereto. The plurality of first terminal groups 510 and the plurality of second terminal groups 520 are arranged in the housing 200 in a crossing manner at intervals, and are inserted in the insertion grooves in a one-to-one correspondence; the connection terminals 300 of each first terminal group 510 and each second terminal group 520 are sequentially arranged in the longitudinal direction within the housing 200. In this embodiment, the terminals of the first terminal set 510 and the connection terminals 300 of the second terminal set 520 are disposed in opposite directions in the lateral direction or the longitudinal direction, so that the elastic contact portions 400 can be disposed in opposite directions to elastically engage with the contact holes 110, and further, the stress directions of the elastic contact portions 400 on each row of connection terminals 300 are opposite, so that the elastic force between the connection terminals 300 and the contact holes 110 is balanced, and the connection terminals 300 are stably connected to the circuit board 100.

Referring to fig. 6, the connection terminal 300 includes a clamping portion 310 that is clamped in the terminal slot 210 and corresponds to one end of the first opening 211, and a clamping portion 320 that is disposed on the clamping portion 310 and extends to one end of the second opening 212 of the terminal slot 210. The clamping portion 310 is clamped with a side wall of the terminal slot 210 to clamp and fix the whole connection terminal 300 in the terminal slot 210, the elastic contact portion 400 is disposed on the clamping portion 310 corresponding to an end far from the clamping portion 320, and the elastic contact portion 400 extends out of the terminal slot 210 from the second opening 212 of the terminal slot 210 to elastically contact with the circuit board 100. The clamping portion 320 is formed at an end of the clamping portion 310 away from the elastic contact portion 400, and a free end of the clamping portion 320 (i.e., an end away from the clamping portion 310) abuts against the stop step 220, so as to achieve the stop of the connection terminal 300 in the mounting direction, and prevent the connection terminal 300 from extending out of the terminal slot 210 from the second opening 212. In this embodiment, the clamping portion 310, the clamping portion 320 and the elastic contact portion 400 are integrally formed by stamping, stretching, bending and other processes, so that no connection gap exists at the connection position of the clamping portion 310, the clamping portion 320 and the elastic contact portion 400, so as to improve the strength of the whole connection terminal 300.

The clamping portion 310 includes a first clamping section 311 and a second clamping section 312 which are disposed opposite to each other, and a connecting section 313 connecting the first ends of the first clamping section 311 and the second clamping section 312, where the first clamping section 311, the connecting section 313 and the second clamping section 312 are sequentially connected to form a clamping portion 310 with a projection on a horizontal plane (i.e., an XY plane) approximately in a structure, and the periphery of the clamping portion 310 with the structure is in adaptive contact with the side wall of the terminal slot 210. Specifically, one side of the connecting section 313 opposite to the first clamping section 311 and the second clamping section 312 abuts against the first side wall of the terminal slot 210, the second end of the first clamping section 311 away from the connecting section 313 and the second end of the second clamping section 312 away from the connecting section 313 are clamped with the second side wall of the terminal slot 210, and the second side wall is opposite to the first side wall, so, when the ends of the first clamping section 311 and the second clamping section 312 away from the connecting section 313 are correspondingly clamped on the first side wall and the second side wall of the terminal slot 210, a reverse acting force can be applied to the connecting section 313, so that the corresponding side of the connecting section 313 abuts against the side wall of the terminal slot 210, and the whole connecting terminal 300 is further fixed.

In this embodiment, a first bump 314 in interference fit with the second sidewall is disposed on a side of the second end of the first clamping section 311 facing the second sidewall, the first bump 314 protrudes from an end surface of the second end of the first clamping section 311 away from the connecting section 313 along a longitudinal direction and abuts against the second sidewall of the terminal slot 210, and the first bump 314 is in interference fit with a corresponding position of the second sidewall; a second protruding point 315 in interference fit with the second side wall is disposed on a side of the second end of the second clamping section 312 facing the second side wall, the second protruding point 315 protrudes from the end surface of the second clamping section 312 away from the second end of the connecting section 313 along the longitudinal direction and abuts against the second side wall of the terminal slot 210, and the second protruding point 315 is in interference fit with a corresponding position of the second side wall; in this way, the connection terminal 300 is fixed in the terminal groove 210 by the snap-fit of the first bump 314 and the second bump 315 with the second sidewall.

The clamping portion 320 includes a first clamping piece 321 and a second clamping piece 322 which are oppositely disposed on the clamping portion 310, wherein the first clamping piece 321 and the second clamping piece 322 have elasticity, so that the first clamping piece 321 and the second clamping piece 322 can be outwards opened and inwards returned after being subjected to force, so that an elastically deformable clamping gap 323 is formed between the first clamping piece 321 and the second clamping piece 322, the clamping gap 323 is used for inserting terminals of a complementary connector, and after the clamping is carried out in place, the clamping gap 323 is pressed on the terminals of the complementary connector through the elasticity of the first clamping piece 321 and the second clamping piece 322, so that stable contact between the connector and the complementary connector of the embodiment is realized. The first clamping piece 321 and the second clamping piece 322 are disposed obliquely inwards, so that the clamping gap 323 is a variable cross-section structure gradually decreasing from one end of the clamping portion 310 to one end far away from the clamping portion 310, and further, the terminals of the complementary connector can be clamped by the first clamping piece 321 and the second clamping piece 322 after being inserted. As a preferred mode of the present embodiment, a guiding opening 324 is provided at the free ends of the first clamping piece 321 and the second clamping piece 322 to guide the terminals of the complementary connector when they are just inserted, so that the complementary connector can be quickly inserted in place; specifically, the guiding opening 324 is inclined outwards from the free ends of the first clamping piece 321 and the second clamping piece 322, and the guiding opening 324 is communicated with the clamping gap 323, so that the guiding opening 324 is approximately horn-shaped or inverted-eight-shaped, and is used for guiding the terminals of the complementary connector during plugging.

The elastic contact part 400 includes a floating section 410 integrally provided on the clamping part 310, an elastic section 420 integrally provided from an end of the floating section 410 remote from the clamping part 310, and an extension section 430 integrally provided from an end of the elastic section 420 remote from the floating section 410. One end of the floating segment 410 is integrally connected with the bottom of the connecting segment 313 of the clamping portion 310, the other end of the floating segment 410 is integrally connected with the elastic segment 420, and when the elastic segment 420 is inserted into the contact hole 110, the floating segment 410 can vertically deviate a certain distance under the action of the elastic segment 420, so as to provide a certain floating space for the insertion of the elastic segment 420, so as to allow slight errors between the positions of the connecting terminal 300 and the contact hole 110. In this embodiment, the elastic section 420 is defined with a bending structure having a variable bending radius after being stressed, and the bending radius of the elastic section 420 when not stressed is at least larger than the radius of the contact hole 110, that is, the overall radial (may be transverse or longitudinal, depending on the assembly direction of the connection terminal 300) width projected on the horizontal plane of the elastic section 420 is slightly larger than the diameter of the contact hole 110 in a natural state, so that the elastic section 420 has a certain space capable of being compressed when being inserted into the contact hole 110, and further the elastic section 420 can be elastically compressed by the inner wall of the contact hole 110 when contacting with the inner wall of the contact hole 110, so as to realize the solderless fixing of the connection terminal 300 and the circuit board 100.

In the present utility model, first, a prefabricated housing 200, connection terminals 300, and a circuit board 100 are provided, and terminal grooves 210 corresponding to the connection terminals 300 one by one are formed in the housing 200. Then, one end of the clamping portion 320 of the connection terminal 300 is aligned with the terminal slot 210 of the housing 200 and corresponds to one end of the first opening 211, and the connection terminal 300 is directly inserted into the terminal slot 210 along the vertical direction, in the process of insertion, after the clamping portion 320 is completely inserted, the clamping portion starts to enter the terminal slot 210, and along with further insertion of the connection terminal 300, the first protruding point 314 and the second protruding point 315 are contacted with the second side wall of the terminal slot 210, and relatively move inwards against the second side wall until the free end of the clamping portion 320 abuts against the step surface 230 of the stop step 220, so that the insertion and fixation of the connection terminal are completed, and the connection terminal 300 and the housing 200 are fixed in a clamping manner without welding, time and labor are saved. Finally, other connection terminals 300 are inserted into the terminal grooves 210 in a one-to-one correspondence manner, so that the whole connector is assembled. When the connector is used, the circuit board 100 with the contact holes 110 is provided, the elastic contact part 400 of the connector is opposite to the contact holes 110 and vertically inserted into the circuit board 100, in the insertion process, the extension section 430 passes through the contact holes 110 at first, the insertion of the whole elastic contact part 400 can be guided initially, along with the further insertion of the connector, the elastic section 420 starts to enter the contact holes 110, the far end of the elastic section in the radial direction abuts against the inner wall of the contact holes 110, and abuts against the inside of the contact holes 110 after being elastically deformed until the bottom of the shell 200 abuts against the circuit board 100, and the solderless electric contact between the connector and the circuit board 100 is completed.

Claims

1. An automatic-inserting-fixing connector for being installed on a circuit board, which is characterized in that the connector is elastically inserted on the circuit board along an installation direction and forms a solderless electric contact with the circuit board; the connector comprises a shell and a plurality of connecting terminals inserted in the shell along the installation direction, wherein one end of each connecting terminal, corresponding to the circuit board, is provided with an elastic contact part exposed out of the shell, and the elastic contact part is elastically inserted in the circuit board.

2. The connector according to claim 1, wherein a terminal groove is formed in the housing at a position corresponding to the connection terminal, the terminal groove has a first opening portion closer to the circuit board and a second opening portion farther from the circuit board, a stopper step is provided on an inner wall of the second opening portion of the terminal groove, and the connection terminal is inserted into the terminal groove from the first opening portion of the terminal groove and is stopped at the stopper step.

3. The connector of claim 2, wherein the connection terminal includes a clamping portion clamped in the terminal groove corresponding to one end of the first opening portion, and a clamping portion provided on the clamping portion and extending to one end of the second opening portion of the terminal groove, a free end of the clamping portion abutting against the stop step to achieve the stop of the connection terminal in the mounting direction; the elastic contact part is arranged on the clamping part and corresponds to one end far away from the clamping part.

4. The connector according to claim 3, wherein the clamping portion comprises a first clamping section and a second clamping section which are arranged oppositely, and a connecting section which connects the first end of the first clamping section and the first end of the second clamping section, one side of the connecting section, which is opposite to the first clamping section and the second clamping section, is abutted against the first side wall of the terminal slot, the second end of the first clamping section, which is far away from the connecting section, and the second end of the second clamping section, which is far away from the connecting section, are clamped with the second side wall of the terminal slot, and the second side wall is arranged opposite to the first side wall.

5. The connector according to claim 4, wherein a side of the second end of the first retaining section facing the second side wall is provided with a first bump in interference fit with the second side wall, and a side of the second end of the second retaining section facing the second side wall is provided with a second bump in interference fit with the second side wall.

6. The connector according to claim 3, wherein the clamping portion comprises a first clamping piece and a second clamping piece which are oppositely arranged on the clamping portion, the first clamping piece and the second clamping piece are obliquely arranged inwards and form a clamping gap with a variable cross section on the inner sides of the first clamping piece and the second clamping piece, and the free ends of the first clamping piece and the second clamping piece are obliquely arranged outwards and form a guiding opening communicated with the clamping gap.

7. The connector for automatic insertion and fixation according to claim 3, wherein the circuit board is provided with a contact hole into which the elastic contact portion is elastically inserted;

8. The self-locking connector of claim 7, wherein the resilient segment defines a bend configuration having a variable bend radius upon application of force, and wherein the bend radius of the resilient segment when unstressed is at least greater than the radius of the contact hole such that the resilient segment is capable of being resiliently compressed radially within the contact hole.

9. The connector according to any one of claims 1 to 8, wherein a plurality of connection terminals are regularly arranged in the housing to form a plurality of first terminal groups and a plurality of second terminal groups, the plurality of first terminal groups and the plurality of second terminal groups are arranged at intervals along a lateral intersection of the housing, and each of the first terminal groups and each of the second terminal groups includes a plurality of the connection terminals arranged along a longitudinal direction of the housing.

10. The automatic guided and fixed connector of claim 9, wherein each terminal of the first terminal group and each connection terminal of the second terminal group are disposed in a direction opposite to each other in a lateral direction or a longitudinal direction.