Automobile controller circuit board pin and its application

Abstract

The present invention discloses a plug pin for a circuit board of an automobile controller and its application. The plug pin is a seat-shaped structure, comprising an upper vertical portion, a middle connecting portion, a first platform, a V-shaped portion and a second platform which are integrally arranged. The first platform and the second platform are arranged in the same plane, and the two top ends of the V-shaped portion are respectively connected to the two adjacent ends of the first platform and the second platform. The application is to connect the circuit board of the automobile controller with the controller housing through the plug pin. The present invention is applied in the production process of the automobile controller, and can effectively ensure the reliable electrical connection between the circuit board and the controller housing, and further provide guarantee for the reliability of the signal transmission of the automobile controller.

Description

Technical Field

[0001] The invention relates to the technical field of automobile controller production, in particular to a plug pin used on an automobile controller and application thereof. Background Art

[0002] The general structure of an automobile controller is to weld the circuit board and the pins of the controller housing together to form an electrical connection. The pins are usually slender cylindrical structures. Before welding, the pins are embedded in the controller housing, and then the soldering holes on the circuit board are connected to the pins, and finally the welding operation is performed.

[0003] However, if the overall installation height of the circuit board is lower than the insert pins due to the layout of the controller housing circuit and components, the ordinary circuit board welding and pin connection methods cannot meet the use requirements. In addition, due to the drastic changes in vibration and temperature of the automobile controller, the reliability requirements for the connection between the pins and the circuit board are particularly high, especially for some driving safety controllers. The ordinary pin welding method cannot fully guarantee the reliability of welding, which poses a great safety hazard to the car. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a car controller circuit board pin and its application, which can effectively ensure a reliable electrical connection between the controller housing and the controller circuit board, and further provide a guarantee for the reliability of the car controller signal transmission.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] A plug pin for a car controller circuit board, the plug pin is a seat-shaped structure, including an upper vertical portion, a middle connecting portion, a first platform, a V-shaped portion and a second platform which are integrally arranged, the first platform and the second platform being arranged in the same plane, the two top ends of the V-shaped portion being respectively connected to the two adjacent ends of the first platform and the second platform; the middle connecting portion being obliquely connected between the other end of the first platform and the bottom end of the upper vertical portion.

[0007] The above-mentioned automobile controller circuit board pin, each part of the pin is a flat structure and has equal width.

[0008] The above-mentioned automobile controller circuit board pin, the middle connecting part includes a first inclined part and a second inclined part that are bent, and the angle between the two inclined parts is 150°~160°; wherein the top end of the first inclined part is fixedly connected to the bottom end of the upper vertical part, and the angle between the two is less than 5°.

[0009] In the above-mentioned automobile controller circuit board pin, the angle of the V-shaped portion is 10°~15°.

[0010] An application of a plug pin of a car controller circuit board, wherein the plug pin adopts the plug pin of claims 1 to 4, and the corresponding welding hole on the car controller circuit board is also set to an elliptical long groove structure that matches the plug pin and can pass through the V-shaped portion of the plug pin; the application is to connect the circuit board of the car controller with the controller housing through the plug pin, and the specific connection method includes the following steps:

[0011] A. After the pin passes through the oval pad on the circuit board, the bottom end of the V-shaped portion of the pin passes through the circuit board and extends out from the bottom end surface of the circuit board, and the two side wings of the V-shaped portion are close together and located in the welding hole; and the bottom end surfaces of the first platform and the second platform are both in close contact with the upper surface of the oval pad;

[0012] B. Use wave soldering process to fix the pins in the oval pads of the circuit board with solder;

[0013] C. Place the circuit board in the controller housing and suspend the bottom of the V-shaped part of the soldered pin;

[0014] D. Insert the L-shaped insert into the car controller housing, and make the top of the vertical part of the L-shaped insert flush with the top of the vertical part of the pin;

[0015] E. The upper vertical portion of the pin and the vertical portion of the L-shaped insert are welded together by laser welding or pulse hot pressing welding to complete the electrical connection between the circuit board and the controller housing.

[0016] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0017] The plug pin of the present invention adopts a special structure and can be more securely fixed in the soldering hole of the circuit board, which not only facilitates the operation of the next welding process without worrying about the plug pin falling off the soldering pad or being placed crookedly, but also effectively ensures the electrical connection between the plug pin and the circuit board, further providing guarantee for the reliability of signal transmission of the automobile controller, avoiding the occurrence of risks caused by problems such as cold soldering and open circuit between the plug pin and the circuit board, and providing reliable guarantee for the safe operation of the automobile. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the plug pin of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the plug pin of the present invention;

[0020] Figure 3 This is a schematic diagram of the state where the pin of the present invention is inserted downward into the circuit board;

[0021] Figure 4 This is a schematic diagram of the state after the pin of the present invention is inserted into the circuit board;

[0022] Figure 5 This is a schematic diagram of the present invention after the pins and the circuit board are soldered together;

[0023] Figure 6 for Figure 5 A top view of

[0024] Figure 7 This is a schematic diagram of the connections between the pins, circuit board, and controller housing.

[0025] Among them: 1. Pin, 11. Upper vertical part, 12. Middle connecting part, 13. First platform, 14. V-shaped part, 15. Second platform, 2. Oval pad, 3. Circuit board, 4. Solder, 5. Controller housing, 6. L-shaped insert. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] A car controller circuit board pin, its structure is as follows Figure 1 and Figure 2 As shown, the plug pin 1 is a chair-like structure, including an upper vertical portion 11, a middle connecting portion 12, a first platform 13, a V-shaped portion 14 and a second platform 15 which are integrally arranged; each part of the plug pin is a flat structure with equal width.

[0028] The first platform 13 and the second platform 15 are arranged in the same plane, and the two top ends of the V-shaped portion 14 are respectively connected to the two adjacent ends of the first platform 13 and the second platform 15. The angle of the V-shaped portion 14 is 10° to 15°.

[0029] The middle connecting portion 12 is obliquely connected between the other end of the first platform 13 and the bottom end of the upper vertical portion 11. In the present invention, the middle connecting portion 12 includes a first oblique portion and a second oblique portion formed by bending, and the angle between the two oblique portions is 150° to 160°; wherein the top end of the first oblique portion is fixedly connected to the bottom end of the upper vertical portion, and the angle between the two is less than 5°.

[0030] The present invention can be made of rectangular plates that can be bent according to the designed angle to form the pins. The pins are made of metal materials with strong plasticity and hardness, wherein the V-shaped portion 14, the first platform 13 and the second platform 15 are partially tinned or made of other materials that are easy to weld, such as gold and silver, to facilitate welding operations.

[0031] The present invention also proposes an application of a car controller circuit board pin, wherein the application is to connect the circuit board of the car controller with the controller housing through the pin, wherein the pin adopts the above-mentioned pin, and the corresponding welding hole on the car controller circuit board is also set to an elliptical long groove structure that matches the pin and can pass through the V-shaped portion of the pin, and the shape of the welding pad on the welding hole is an elliptical structure.

[0032] Specifically, the method for connecting the circuit board and the controller housing includes the following steps.

[0033] A. Pass the pin through the oval pad 2 on the circuit board, as shown in Figure 3 In the direction indicated by the middle arrow, the bottom end of the V-shaped portion 14 of the pin passes through the circuit board and extends out from the bottom end surface of the circuit board, and the two side wings of the V-shaped portion are close together and located in the welding hole; and the bottom end surfaces of the first platform and the second platform are both tightly attached to the upper surface of the elliptical pad 2; Figure 4 shown.

[0034] In this step, due to the deformation of the V-shaped portion after being inserted into the welding hole, combined with the arrangement of the first platform and the second platform, the entire plug pin can be pre-fixed in the welding hole 3 relatively stably, and is not prone to falling off or position change.

[0035] B. Use wave soldering technology to fix the pins in the oval pads of the circuit board with solder. The effect after soldering is as follows Figure 5 and Figure 6 As shown, the black filled part in the figure is solder 4, such as between the first platform and the pad, between the second platform and the pad, between the top of the V-shaped portion, between the bottom of the V-shaped portion and the pad of the lower section of the circuit board, and between the V-shaped portion and the solder hole.

[0036] C. Place the circuit board in the controller housing and suspend the bottom of the V-shaped portion 14 of the soldered pin; Figure 7 shown.

[0037] D. Insert the L-shaped insert 6 into the car controller housing, and make the top of the vertical part of the L-shaped insert 6 flush with the top of the vertical part of the pin. In the present invention, since the middle connecting part of the pin adopts a bent inclined structure, and there is an angle between the middle connecting part and the upper vertical part, the upper vertical part can be closely attached to the top of the vertical part of the L-shaped insert 6 under the deformation force of the middle connecting part, ensuring close and reliable contact between the two.

[0038] E. The upper vertical portion of the pin and the vertical portion of the L-shaped insert are welded together by laser welding or pulse hot pressing welding to complete the electrical connection between the circuit board and the controller housing.

[0039] The final electrical connection structure is as follows Figure 7The soldered pins, circuit board and controller housing form a complete electrical connection structure, which effectively solves the problem of unreliable transmission of electrical signals.

[0040] The present invention adopts a special structure of the pin, combined with the L-shaped insert, so that the controller housing can be more securely connected to the circuit board; even if a cold solder joint, a circuit break, or even a leaky solder joint occurs, the electrical connection between the pin and the circuit board can be guaranteed, so that the automobile controller can operate reliably in harsh environments (vibration, temperature shock).

Claims

1. An application of a pin on a circuit board of an automobile controller, characterized in that: The plug pin (1) is a seat-shaped structure, and the corresponding welding hole on the automobile controller circuit board is also arranged to be an elliptical long groove structure matching the plug pin and capable of passing through the V-shaped portion of the plug pin; The invention comprises an upper vertical portion (11), a middle connecting portion (12), a first platform (13), a V-shaped portion (14) and a second platform (15) which are arranged integrally, wherein the first platform (13) and the second platform (15) are arranged in the same plane, and two top ends of the V-shaped portion (14) are respectively connected to two adjacent ends of the first platform (13) and the second platform (15); and the middle connecting portion (12) is obliquely connected between the other end of the first platform (13) and the bottom end of the upper vertical portion (11); The application is to connect the circuit board of the automobile controller with the controller housing through pins, and the specific connection method includes the following steps: A. After the pin is inserted through the elliptical pad (2) on the circuit board, the bottom end of the V-shaped portion (14) of the pin is inserted through the circuit board and extends out from the bottom end surface of the circuit board, and the two side wings of the V-shaped portion are closed together and located in the welding hole; and the bottom end surfaces of the first platform and the second platform are both tightly attached to the upper surface of the elliptical pad (2); B. Use wave soldering process to fix the pins in the oval pads of the circuit board with solder; C. placing the circuit board in the controller housing, and suspending the bottom end of the V-shaped portion (14) of the soldered pin; D. inserting the L-shaped insert (6) into the housing of the automobile controller, and making the top of the vertical portion of the L-shaped insert (6) flush with the top of the vertical portion of the pin; E. The upper vertical portion of the pin and the vertical portion of the L-shaped insert are welded together by laser welding or pulse hot pressing welding to complete the electrical connection between the circuit board and the controller housing.

2. The application of a car controller circuit board pin according to claim 1, characterized in that: Each part of the pin is a flat structure with equal width.

3. The application of a car controller circuit board pin according to claim 1, characterized in that: The middle connecting portion (12) comprises a first inclined portion and a second inclined portion which are bent and formed, and the angle between the two inclined portions is 150° to 160°; wherein the top end of the first inclined portion is fixedly connected to the bottom end of the upper vertical portion, and the angle between the two is less than 5°.

4. The application of a car controller circuit board pin according to claim 1, characterized in that: The included angle of the V-shaped portion (14) is 10° to 15°.

Images