CN105119071A - Electrical connector and its device and assembly method - Google Patents

Abstract

The present invention discloses an electrical connector, comprising an insulating body, a conductive terminal contained in the insulating body, and a cable connected to the conductive terminal, characterized in that: the electrical connector also comprises a locking piece, a locking hole is provided in the center of the insulating body, and the locking piece locks the electrical connector and a circuit board in contact with the electrical connector to a back plate through the locking hole. Through the above structure, the connector no longer needs to be welded, which is convenient for replacement of the connector and also makes the assembly of the connector simpler.

Description

Electrical connector and its device and assembly method

technical field

The present invention relates to the technical field of electrical connectors, in particular to an electrical connector used in a backlight module and its device and assembly method.

Background technique

In the backlight module, in order to splice two or more circuit boards carrying LEDs together, generally the end edges of the two circuit boards are soldered with mating male and female connectors, and then connected by male and female The socket of the device realizes the connection of power or signal.

It can be seen that in order to realize the connection between the two circuit boards, we must be equipped with at least two connectors, and each connector must be assembled on a fixed position on each circuit board by welding. The increase in components will virtually increase the cost of the product. At the same time, once the connector soldered on the circuit board is damaged or poorly connected, it will not be easy to replace it, or even cause the entire circuit to be scrapped. , because the male and female connectors must be welded on the edge of the circuit board and adjacent to the two, it is not easy to change the welding position as required, nor can it be used for long-distance connection.

Therefore, a new technical solution needs to be researched to solve the above problems.

Contents of the invention

In view of this, the present invention addresses the shortcomings of the prior art, and its main purpose is to provide an electrical connector and its device that are easy to assemble, easy to replace, and can effectively reduce product costs.

Another object of the present invention is to provide an assembly method of the above-mentioned electrical connector.

To achieve the above object, the present invention adopts the following technical solutions:

An electrical connector includes an insulating body, a conductive terminal accommodated in the insulating body, and a cable connected to the conductive terminal. The electrical connector also includes a locking member, and a locking hole is provided in the center of the insulating body. The locking member locks the electrical connector and the circuit board in contact with the electrical connector on the backboard through the locking hole.

As a preferred solution, the conductive terminal is provided with an elastic contact portion, and the contact portion is in contact with a gold finger on the circuit board.

As a preferred solution, an open terminal slot is provided at the front end of the insulating body, and the terminal slot is connected to the lower surface for the contact portion of the conductive terminal to protrude from the lower surface of the insulating body.

As a preferred solution, a ring-shaped protrusion is provided around the locking hole on the lower surface of the insulating body, and the ring-shaped protrusion can be positioned in cooperation with a corresponding through hole on the circuit board.

As a preferred solution, several positioning posts are provided on the lower surface of the insulating body, and the positioning posts are used to cooperate with the positioning holes on the circuit board.

As a preferred solution, the conductive terminal is further provided with a clamping part, which is used for clamping the cable and connecting with the cable.

As a preferred solution, the locking member is a screw, including thread and head.

An electrical connector device includes an electrical connector and a circuit board. The electrical connector further includes an insulating body, a conductive terminal accommodated in the insulating body, and a cable connected to the conductive terminal. The electrical connector is positioned on The electrical connector also includes a locking piece, the center of the insulating body is provided with a locking hole, the circuit board is provided with a through hole, and the locking piece passes through the locking hole and The through hole locks the electrical connector and the circuit board together on the backplane.

A method of assembling an electrical connector, comprising:

1). Provide a cable, an insulating body, a conductive terminal and a fastener;

2). After the cable is clamped in the clamping part of the conductive terminal, it is assembled and fixed together with the conductive terminal in the terminal groove of the insulating body;

3). Position the above-assembled insulating body on the circuit board, and match the annular protrusion and the positioning column on the insulating body with the through hole and the positioning hole on the circuit board respectively to position the insulating body;

4). Put the locking piece through the lock hole of the insulating body and the through hole of the circuit board and put it into the backboard together, and tighten the locking piece into the sprouting of the backboard to complete the assembly of the connector, and at the same time position the connector on the circuit board.

Compared with the prior art, the present invention has the following obvious advantages and beneficial effects:

Firstly, by using the locking piece to fix and lock the connector on the backplane, the connector no longer needs to be welded, which facilitates the replacement of the connector, and also makes the assembly of the connector easier. Furthermore, when the connector is fixed and locked on the backboard, the circuit board can be locked and positioned on the backboard together, thereby effectively reducing the assembly process, and it is also very convenient when the entire circuit board fails. The entire circuit board is replaced; finally, by connecting the electrical connectors with cables, not only the number of electrical connectors used is reduced, but also the installation position of each connector on the circuit board is not limited.

In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

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

Fig. 2 is another perspective view of the electrical connector of the present invention;

Fig. 3 is a three-dimensional exploded view of the electrical connector of the present invention;

4 is a schematic diagram of the assembly of the electrical connector of the present invention;

5 is an assembly structure diagram of the electrical connector of the present invention;

FIG. 6 is a schematic diagram of the application of the electrical connector of the present invention in a backlight module.

Explanation of the accompanying drawings:

1. Electrical connector

10. Insulation body 11. Terminal slot

12. Keyhole 13. Steps

14. Annular protrusion 15. Positioning column

20. Conductive terminal 21. Contact part

22. Clamping part 30. Cable

40, locking piece 50, circuit board

51, through hole 52, golden finger

53, positioning hole 60, back plate

61. Sprout.

Detailed ways

Please refer to Figures 1 to 5, which show the specific structure of the electrical connector of the present invention, which includes an insulating body 10, a conductive terminal 20 accommodated in the insulating body 10, a cable 30 connected to the conductive terminal, And lock piece 40. in:

The insulating body 10 is roughly in the shape of a square, and an open terminal groove 11 is provided at the front end. The terminal groove 11 extends backward for a certain distance and communicates with the lower surface for the contact portion 21 of the conductive terminal 20 to protrude from the insulating body. the lower surface of the body 10. A circular lock hole 12 is provided in the center of the edge body 10, the lock hole penetrates from the upper surface of the insulating body to the lower surface for the passage of the lock piece, and a stepped step 13 is provided in the inner ring of the lock hole , so that the opening of the locking hole 12 on the upper surface of the insulating body 10 is larger than the opening on the lower surface, and its steps are used to position the locking member 40. The height from the step 13 to the upper surface is greater than the height of the head of the locking member 40, so that the locking member Sink in the lockhole 12 after the 40 buckles. The lower surface of the insulating body 10 is provided with an annular protrusion 14 around the lock hole, and the annular protrusion 14 is positioned in the through hole 51 on the circuit board, and a pair of positioning posts are arranged side by side in front of the lock hole 12. 15. The pair of positioning posts 15 cooperate with the annular protrusion 14 to jointly position the connector.

The conductive terminal 20 is inserted from the terminal groove 15 of the insulating body 10 and positioned in the terminal groove 11, and its rear end is provided with an elastic contact portion 21, which is formed by reverse bending from the middle fixed portion. The contact part 21 protrudes from the lower surface of the insulating body 10, and it is in contact with the golden finger on the circuit board after the connector is installed; the front end of the conductive terminal 20 is provided with a clamping part 22, and the clamping part 22 and The fixing parts are adjacent to each other and are used for clamping the cable 30 and connecting with the cable 30 .

The locking member 40 includes a thread and a head for locking the electrical connector and the circuit board. In this embodiment, it is a screw, of course, but not limited to a screw, and can also be a bolt, a stud, etc. fastener.

Please refer to Figure 4 and Figure 5, which are the assembly structure diagrams of the electrical connector. First, after the cable is clamped in the clamping part of the conductive terminal, it is assembled and fixed together with the conductive terminal in the terminal groove 15 of the insulating body; Then, the insulating body is positioned on the circuit board, and the annular protrusion 14 and the positioning column on the insulating body are matched with the through hole and the positioning hole on the circuit board 50 respectively, so that the insulating body is positioned; finally, the locking member is passed through After passing through the lock hole of the insulating body and the through hole of the circuit board, put them on the backboard 60 together, and start to tighten the locking member 40 into the bud 61 of the backboard, thereby completing the assembly of the connector, and at the same time directly positioning it on the circuit board The electrical connector on the 50 is locked on the back plate 60, and the connector is no longer required to be welded and assembled. However, when the electrical connector is damaged due to long-term use, the locking member 40 can be unscrewed at any time for replacement, which is simple and convenient; After the installation is completed, the contact portion 21 of the conductive terminal protruding from the lower surface of the insulating body 10 contacts the gold finger on the circuit board due to the elastic effect, thereby reliably connecting the circuit board and the cable to realize the transmission of power or signals However, while locking the electrical connector with the locking element, its locking element 40 also locks and positions the circuit board together on the backplane 60, so that the circuit board can be further fixed on the backplane 60, in some cases In addition, the circuit board can be directly assembled to the backplane 60 without further assembly, thereby effectively reducing the assembly process, and when the entire circuit board fails, it is also very convenient to replace the entire circuit board.

Please refer to FIG. 6 , which is a schematic diagram of the application of the electrical connector in the backlight module. The connector is installed on the same end of a plurality of parallel circuit boards 50 carrying LED lamps through a lock to provide power connection for each circuit board. It is divided into positive and negative poles, represented by "+" and "-" respectively. The positive pole of the first connector is connected to the positive pole of the power supply through a cable, and the negative pole is connected to the positive pole of the second connector through a cable, and so on. Finally, The negative pole of one connector is connected to the negative pole of the power supply. In this way, the circuit boards can be connected in series with the least number of electrical connectors to achieve the effect of simultaneously supplying power to each circuit board.

The above descriptions are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention in any way, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still valid. Belong to the scope of the technical solution of the present invention.

Claims (11)

1. An electrical connector, comprising an insulating body, a conductive terminal accommodated in the insulating body, and a cable connected to the conductive terminal, characterized in that: the electrical connector also includes a locking member, the insulating body A locking hole is provided in the center, and the locking member locks the electrical connector and the circuit board in contact with the electrical connector on the backboard through the locking hole. 2 . The electrical connector according to claim 1 , wherein an elastic contact portion is provided on the conductive terminal, and the contact portion is in contact with a gold finger on the circuit board. 3 . 3. An electrical connector according to claim 1, wherein an open terminal groove is provided at the front end of the insulating body, and the terminal groove communicates with the lower surface for the contact portion of the conductive terminal to protrude on the lower surface of the insulating body. 4. An electrical connector according to claim 1, characterized in that: a ring-shaped protrusion is provided around the lock hole on the lower surface of the insulating body, and the ring-shaped protrusion can be matched with the corresponding through hole on the circuit board position. 5 . The electrical connector according to claim 1 , wherein a plurality of positioning posts are arranged on the lower surface of the insulating body, and the positioning posts are used to cooperate with positioning holes on the circuit board. 6 . 6 . The electrical connector according to claim 1 , wherein the conductive terminal is further provided with a clamping portion, and the clamping portion is used for clamping the cable and connecting with the cable. 7. The electrical connector according to claim 1, wherein the locking member is a screw, comprising thread and a head. 8. An electrical connector device, including an electrical connector and a circuit board, the electrical connector also includes an insulating body, a conductive terminal accommodated in the insulating body, and a cable connected to the conductive terminal, the electrical connector Positioned on the circuit board and in contact with it for transmission, it is characterized in that: the electrical connector also includes a locking member, a locking hole is provided in the center of the insulating body, and a through hole is provided on the circuit board. The locking piece locks the electrical connector together with the circuit board on the backplane through the locking hole and the through hole. 9 . The electrical connector device according to claim 8 , wherein the electrical connector further comprises the structure described in any one of claims 2 to 7 . 10. A method for assembling an electrical connector, characterized in that: 1). Provide a cable, an insulating body, a conductive terminal and a fastener; 2). After the cable is clamped in the clamping part of the conductive terminal, it is assembled and fixed together with the conductive terminal in the terminal groove of the insulating body; 3). Position the above-assembled insulating body on the circuit board, and match the annular protrusion and the positioning column on the insulating body with the through hole and the positioning hole on the circuit board respectively to position the insulating body; 4). Put the locking piece through the lock hole of the insulating body and the through hole of the circuit board and put it into the backboard together, and tighten the locking piece into the sprouting of the backboard to complete the assembly of the connector, and at the same time position the connector on the circuit board. 11. A method for assembling an electrical connector according to claim 10, wherein the electrical connector has the structure described in any one of claims 2 to 7.