TWI658651B - Electrical connector - Google Patents

Abstract

The invention relates to an electrical connector, which comprises an insulating substrate, a plurality of connection terminals and a wire. The insulating substrate has a bearing surface and a first fixing groove formed by recessing from the bearing surface. The connection terminal is fixed to the insulating substrate along the direction of the vertical bearing surface, and has a first fixing portion fixedly mating with the first fixing groove, a docking portion extending forward from the end of the first fixing portion to the insulating substrate, and a connection. A first connection portion at the other end of the first fixing portion. The wire extends into the first wiring portion, and is fixedly connected to the wiring terminal through the first wiring portion.

Description

Electrical connection

The invention relates to an electrical connector, in particular to an electrical connector which is convenient for welding.

Wires can be found in various electrical equipment for various signal transmissions. The conventional wires are directly connected to the circuit boards of the corresponding electrical equipment by soldering; thereby, when there are many wires to be connected, one of the wires is soldered and its corresponding setting with the corresponding position on the circuit board is compared. It is troublesome and requires more technical manpower and time. When the positions of adjacent wires are close, the electrical connection positions of the wires are also easy to contact and short-circuit when welding.

In view of this, it is indeed necessary to further improve the traditional connection method to solve the above problems.

An object of the present invention is to provide an electrical connector which is convenient for welding.

In order to achieve the above object, the present invention provides an electrical connector, comprising: an insulating substrate having a bearing surface and a first fixing groove formed by recessing from the bearing surface; and a plurality of connection terminals installed and fixed to the bearing surface in a direction perpendicular to the bearing surface. The insulating substrate has a first fixing portion fixedly mating with the first fixing groove, a docking portion extending forward from one end of the first fixing portion of the insulating substrate, and a first connecting portion connected to the other end of the first fixing portion; , Extends into the first wiring portion, and is fixedly connected to the wiring terminal through the first wiring portion.

As a further improvement of the present invention, the first fixing portion is an inverted U-shape, and has a first base portion parallel to the bearing surface, and first fixing legs extending from both sides of the first base portion, respectively, and the first fixing groove corresponds to The first fixed feet are spaced in pairs, and the abutting portion and the first connecting portion are respectively connected to both sides of the first base portion.

As a further improvement of the present invention, the insulating substrate is provided with a first wire accommodating groove extending in the front-rear direction below the first wiring portion, and the first wiring portion protrudes downward into the first wire accommodating groove. The wire has a wire core that is riveted with the first wiring portion.

As a further improvement of the present invention, the connection terminal is further provided with a first transition portion between the first fixing portion and the first connection portion, and the insulating substrate is further provided with a receiving slot in front of the first lead receiving slot. A width of the accommodating groove is smaller than a width of the first wire accommodating groove, and is adapted to a width of the first transition portion, so that both sides of the first transition portion can abut the inner walls of both sides of the accommodating groove. Hold limit.

As a further improvement of the present invention, the insulating substrate is provided with a card line protrusion protruding toward the first wire receiving groove.

As a further improvement of the present invention, the connection terminal further has a second fixing portion connected behind the first connection portion, and the insulating substrate has a second fixing groove recessed from the bearing surface to be fixed with the second fixing portion. The second fixing groove is located on both sides of the first wire accommodating groove in a lateral direction. The second fixing portion is an inverted U-shape, and has a second base portion parallel to the bearing surface. The second fixing foot in the second fixing groove is described.

As a further improvement of the present invention, the depth of the first wire accommodating groove is set to be not less than the outer diameter of the wire; and the insulating substrate is recessed from the bearing surface as a whole to form a recess at a position around the terminal, Both the first base portion and the second base portion of the connection terminal are housed in a recessed portion, And it does not protrude outside the bearing surface.

As a further improvement of the present invention, the connection terminal further has a second connection portion connected behind the second fixing portion, the second connection portion extends into the first wire receiving groove, and the wire is riveted to among them.

As a further improvement of the present invention, the insulating substrate is provided with a first wire accommodating groove extending in the front-rear direction, a second wire accommodating groove communicating behind the first wire accommodating groove, and a first wire accommodating behind the second wire accommodating groove. A three-conductor receiving slot, the first and third lead receiving slots are parallel to each other, and the distance between the third lead receiving slots is smaller than the distance between the first lead receiving slots. The second, third, and third wire receiving grooves extend.

As a further improvement of the present invention, the insulating substrate is provided with a first wire receiving groove extending in the front-rear direction, a second wire receiving groove communicating with the rear of the first wire receiving groove, and a third wire communicating with the second wire receiving groove. In the receiving groove, the first wire receiving groove and the third wire receiving groove are perpendicular to each other. The distance between the third wire receiving grooves is smaller than the distance between the first wire receiving grooves. The second and third wire receiving grooves extend.

Compared with the prior art, in the electrical connector of the present invention, the wires are fixedly connected to the terminal blocks, and then the wires are uniformly fixed in advance to an insulating substrate through the terminal blocks, so that the wires can be arranged before shipment. It is in a good position, and when soldering, you only need to align the mating parts of the electrical connector with the gold fingers on the corresponding circuit board to perform a one-time soldering operation. The connection is convenient and fast, and the insulating substrate can effectively avoid adjacent wires. The contact at the connection position is short-circuited to ensure the normal and stable transmission of the signal; in addition, the overall structure of the electrical connector of the present invention is relatively simple and convenient and quick to install.

100, 100 ’, 100” ‧‧‧ electric connectors

200‧‧‧Circuit Board

1,1 ’, 1” ‧‧‧Insulated substrate

11‧‧‧ butt face

12‧‧‧ rear face

13‧‧‧ side

14‧‧‧ bearing surface

15‧‧‧ the first fixing groove

16,161,161 "‧‧‧‧First wire receiving slot

162, 162 "‧‧‧Second wire receiving slot

163, 163 "‧‧‧ Third wire receiving slot

17‧‧‧ Receiving slot

18‧‧‧Second fixing groove

19‧‧‧ recess

10‧‧‧ card line protruding

2‧‧‧Terminals

21‧‧‧ the first fixed part

211‧‧‧First base

212‧‧‧first fixed foot

2121‧‧‧Barbed Structure

22‧‧‧ Butt Department

23‧‧‧The first wiring department

24‧‧‧First Transition Department

25‧‧‧Second Fixing Section

251‧‧‧Second Base

252‧‧‧Second fixing foot

2521‧‧‧Barbed Structure

27‧‧‧Second wiring section

28‧‧‧ Second Transition Department

3, 3’‧‧‧ wires

31‧‧‧core

The first diagram is a perspective view of the electrical connection member being soldered to a circuit board in a preferred embodiment of the present invention.

The second figure is a perspective view of the insulating substrate of the electrical connector shown in the first figure.

The third figure is an exploded perspective view of the cable assembly of the electrical connector shown in the first figure.

The fourth diagram is a perspective view of the electrical connection member being soldered to a circuit board in another preferred embodiment of the present invention.

The fifth diagram is a perspective view of the electrical connection member being soldered to a circuit board in another preferred embodiment of the present invention.

Please refer to the first to third figures together to show a preferred embodiment of the electrical connector 100 of the present invention. The electrical connector 100 is used to be opposite to a circuit board 200 and includes an insulating substrate 1 and a plurality of cable assemblies fixed on the insulating substrate 1. Each cable assembly includes a terminal 2 and a lead 3 electrically connected to the terminal 2.

In combination, as shown in the first and second figures, the insulating substrate 1 has a flat plate shape, and has an abutment surface 11 provided adjacent to the circuit board 200, a rear end surface 12 opposite to the abutment surface 11, and a connection abutment surface. 11 and two side surfaces 13 on both sides of the rear end surface 12, a bearing surface 14 at the top, and a first fixing groove 15 recessed from the bearing surface 14 to fix the connection terminal 2.

With reference to the first to third figures, the connection terminal 2 is fixed to the insulating substrate 1 along the direction of the vertical bearing surface 14, and has a first fixing portion 21 fixedly mated with the first fixing groove 15. One end of the first fixing portion 21 extends forward from the abutting portion 22 of the insulating substrate 1 and the first wiring portion 23 connected to the other end of the first fixing portion 21. The wire 3 extends into the first connection portion 23 and is fixedly connected to the connection terminal 2 through the first connection portion 23.

Specifically, the docking portion 22 is provided in a flat plate shape. The first fixing groove 15 is disposed near the butting surface 11 so that the connection terminal 2 is firmly positioned near the circuit board 200, so that the butting portion 22 and the circuit board 200 are easily aligned when soldering, and when soldering Does not shake and makes adjacent terminals 2 Short circuit due to contact.

Preferably, in order to ensure the holding stability of the first fixing portion 21, the first fixing portion 21 is provided in an inverted U-shape, and has a first base portion 211 parallel to the bearing surface 14, and two sides of the first base portion 211 The first fixed feet 212 extend respectively. The abutting portion 22 and the first connecting portion 23 are respectively connected to both sides of the first base portion 211. The first fixing grooves 15 are also arranged in pairs corresponding to the first fixing feet 212, and the two sides of the first fixing feet 212 are fixed by interference with the inner wall of the first fixing groove 15 by providing barb structures 2121.

Further, in order to protect the connection between the connection terminal 2 and the wire 3, the insulating substrate 1 is further provided with a first wire receiving groove 16 extending in the front-rear direction to below the first wiring portion 23. The first wiring portion 23 extends downward into the first wire receiving groove 16, and the wire 3 has a wire core 31 located at a front end to be riveted with the first wiring portion 23. A part of the main body of the wire 3 behind the front core 31 is also accommodated in the first wire receiving groove 16, and the insulating substrate 1 is protruded inside the first wire receiving groove 16 to restrict the wire 3 from detaching outward.的 卡 线 lodgings 10.

As can be seen from the second figure, the connection terminal 2 is further provided with a first transition portion 24 between the first fixing portion 21 and the first connection portion 23. The insulating substrate 1 is further provided with an accommodating groove 17 in front of the first wire accommodating groove 16, and the width of the accommodating groove 17 is smaller than the width of the first wire accommodating groove 16 and is equal to that of the first transition portion 24. The width is adapted so that the two sides of the first transition portion 24 can be in a position against the inner walls of both sides of the accommodating groove 17 to prevent the connection between the first base portion 211 and the first transition portion 24 from tearing. The first fixing groove 15 is disposed on both sides of the receiving groove 17.

Please refer to the first to third figures. In this embodiment, in order to strengthen the fixing stability, the connection terminal 2 further has a second fixing portion 25 connected behind the first connection portion 23 and connected to the connection portion. A second connection portion 27 behind the second fixing portion 25. The second fixing portion 25 and the first wiring portion 23 and the second fixing portion 25 and the second wiring portion 27 are connected to each other by a second transition portion 28. Said second fixed The portion 25 is also provided in an inverted U-shape, and has a second base portion 251 parallel to the bearing surface 14, and second fixing legs 252 protruding into the second fixing groove 18 from both sides of the second base portion 251.

Accordingly, the insulating substrate 1 has a second fixing groove 18 recessed from the bearing surface 14 to be fixed to the second fixing portion 25. The second fixing groove 18 is located on both sides of the first wire receiving groove 16 in the lateral direction. Two sides of the second fixing foot 252 are also fixed by interference with the inner wall of the second fixing groove 18 by providing barb structures 2521.

The second wiring portion 27 extends into the first wire receiving groove 16, and a main portion of the wire 3 behind the front end core 31 is riveted therein. The clamping wire protrusion 10 is located behind the second fixing groove 18.

Further, in order to protect the cable assembly according to the present invention, the depth of the first wire accommodating groove 16 is set to be not less than the outer diameter of the wire 3; and the insulating substrate 1 is located around the terminal 2 A recessed portion 19 is recessed downward from the supporting surface 14 as a whole, so that the first base portion 211 and the second base portion 251 of the connection terminal 2 are received in the recessed portion 19, and the entirety thereof does not substantially protrude outside the supporting surface 14. .

In addition, as shown in the first and second figures, the first lead receiving grooves 16 in this embodiment all extend in the front-rear direction and pass through the insulating substrate 1 backward, so that the plurality of leads 3 are extended in the front-rear direction and On the insulating substrate 1.

As another preferred embodiment of the electrical connector 100 ′ of the present invention, as shown in the fourth figure, in order to meet the requirements of the wiring, compared to the first preferred embodiment, the insulating substrate 1 ′ is disposed along the front-rear direction. Outside the extended first wire receiving groove 161, a second wire receiving groove 163 communicating with the rear of the first wire receiving groove 161 and a third wire receiving groove 163 communicating with the rear of the second wire receiving groove 163 are provided; The first wire receiving groove 161 does not penetrate backward through the insulating substrate 1 ′, and the third wire receiving groove 163 The insulating substrate 1 'is penetrated backward. The first wire receiving groove 161 and the third wire receiving groove 163 are parallel, and the distance between the third wire receiving groove 163 is smaller than the distance between the first wire receiving groove 161. The first, second, and third lead receiving grooves 161, 162, and 163 extend, so that the leads 3 'are gathered behind the insulating substrate 1'.

With reference to the fifth figure, as another preferred embodiment of the electrical connector 100 "of the present invention, in order to meet the requirements of the wiring, compared to the first preferred embodiment, the insulating substrate 1" is disposed along the front-rear direction. In addition to the extended first wire receiving groove 161 ", a second wire receiving groove 162" communicating with the rear of the first wire receiving groove 161 "and a third wire receiving groove 163" communicating with the second wire receiving groove 162 "are provided; The first wire receiving groove 161 "does not penetrate the insulating substrate 1" backward, and the third wire receiving groove 163 "penetrates the insulating substrate 1" laterally. The first wire receiving groove 161 "and the third wire receiving groove The grooves 163 "are perpendicular, and the distance between the third wire receiving grooves 163" is smaller than the distance between the first wire receiving grooves 161 ", and the wires 3" are along the aforementioned first, second, and third wire receiving grooves. 161 ", 162", 163 "extend, so that the wires 3" are gathered on one side of the insulating substrate 1 ".

From the above, it can be known that in the electrical connector 100, 100 ', 100 "of the present invention, the wires 3, 3', 3" and the terminal 2 are fixedly connected, and then the wires 3, 3 ', 3 are connected through the terminal 2. It is fixed in advance to an insulating substrate 1, 1 ', 1 ”uniformly, so that the wires 3, 3', 3” can be aligned and positioned before leaving the factory, and then only the electrical connectors need to be soldered during welding. The 100, 100 ', 100 "mating portions 22 can be used for one-time soldering operations after being aligned with the gold fingers on the corresponding circuit board. The connection is convenient and fast. In addition, the insulating substrates 1, 1', 1" can effectively avoid phase contact. The contact at the connection position of the adjacent wires 3, 3 ', 3 "is short-circuited to ensure the normal and stable transmission of the signal. In addition, the overall structure of the electrical connector 100, 100', 100" of the present invention is relatively simple, and the installation is convenient and quick.

In particular, it should be noted that for those skilled in the art, in the teaching of the present invention The equivalent changes made to the present invention under the guidance should still be included in the scope claimed by the patent application scope of the present invention.

Claims (10)

An electrical connector includes: an insulating substrate having a bearing surface and a first fixing groove formed by being recessed from the bearing surface; a plurality of connection terminals installed and fixed to the insulating substrate in a direction perpendicular to the bearing surface, and having: A first fixing portion fixedly cooperating with the first fixing groove, a butt portion extending forward from an end of the first fixing portion of the insulating substrate, and a first wiring portion connected to the other end of the first fixing portion; , Extends into the first wiring portion, and is fixedly connected to the wiring terminal through the first wiring portion. The electrical connector according to item 1 of the scope of patent application, wherein the first fixing portion is an inverted U-shape, and has a first base portion parallel to the bearing surface, and extending from both sides of the first base portion, respectively. A first fixed foot, the first fixed groove is arranged in pairs corresponding to the first fixed foot, and the abutting portion and the first connecting portion are respectively connected to both sides of the first base portion. The electrical connector according to item 1 of the scope of patent application, wherein the insulating substrate is provided with a first wire accommodating groove extending in a front-rear direction to below the first wiring portion, and the first wiring portion extends downward Into the first wire accommodating groove, the wire has a wire core riveted with the first wiring portion. The electrical connector according to item 3 of the scope of patent application, wherein the connection terminal is further provided with a first transition portion between the first fixing portion and the first connection portion, and the insulating substrate An accommodating groove is further connected in front of the first wire accommodating groove, and the width of the accommodating groove is smaller than the width of the first wire accommodating groove, and is adapted to the width of the first transition portion, so that the The two sides of the first transition portion can resist the limiting positions with the inner walls of both sides of the receiving groove. The electrical connector according to item 3 of the scope of the patent application, wherein the insulating substrate is provided with a card wire protrusion protruding toward the first wire receiving groove. The electrical connector according to item 3 of the scope of patent application, wherein the connection terminal further has a second fixing portion connected behind the first connection portion, and the insulating substrate has a recess from the bearing surface to communicate with The second fixing groove is fixed to the second fixing portion, and the second fixing groove is located on both sides of the first wire accommodating groove in a lateral direction. The second fixing portion is U-shaped and has a bearing surface. A second parallel base, and second fixed feet protruding into the second fixing groove from the two sides of the second base respectively. The electrical connector according to item 6 of the scope of patent application, wherein the depth of the first wire receiving groove is set to be not less than the outer diameter of the wire; and the insulating substrate is located at a position around the terminal. The bearing surface as a whole is recessed downward to form a concave portion, and the first base portion and the second base portion of the connection terminal are both housed in the concave portion and do not protrude to the outside of the bearing surface. The electrical connector according to item 6 of the scope of patent application, wherein the connection terminal further has a second connection portion connected behind the second fixing portion, and the second connection portion extends into the first wire accommodation Slot, and wire riveted into it. The electrical connector according to item 1 of the scope of patent application, wherein the insulating substrate is provided with a first wire receiving groove extending in the front-rear direction, a second wire receiving groove communicating with the rear of the first wire receiving groove, and A third wire receiving groove communicating with the second wire receiving groove, the first wire receiving groove and the third wire receiving groove are parallel, and the distance between the third wire receiving groove is smaller than the first wire The distance between the receiving grooves, the wires extend along the first, second, and third wire receiving grooves. The electrical connector according to item 1 of the scope of patent application, wherein the insulating substrate is provided with a first wire receiving groove extending in the front-rear direction, a second wire receiving groove communicating with the rear of the first wire receiving groove, and A third wire receiving groove communicating with the second wire receiving groove, the first wire receiving groove and the third wire receiving groove are perpendicular, and a distance between the third wire receiving groove is smaller than the first wire The distance between the receiving grooves, the wires extend along the first, second, and third wire receiving grooves.