A bullet structure for steering system control unit ESD failure

Abstract

This utility model relates to the field of steering system technology, specifically a spring clip structure for ESD failure of the steering system control unit. The spring clip structure for ESD failure of the steering system control unit is characterized by: a spring clip top and S-level pins. The spring clip top has a quincunx-shaped plate structure with a through hole in the center. S-level pins are connected to the petals of the spring clip top. The S-level pins have an S-shaped bend, with one end integrally connected to the spring clip top and the other end folded outwards. Compared with the prior art, this provides a spring clip structure for ESD failure of the steering system control unit, optimizing the spring clip structure to ensure contact between the spring clip and the bolt after press-fitting, thus ensuring PCB grounding continuity.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, specifically a spring structure for ESD failure of the steering system control unit. Background Technology

[0002] ESD, or electrostatic discharge, can damage the internal circuitry of electronic components, directly affecting the product's lifespan and even causing damage. As the main control unit in the EPS system, the steering gear ECU's safety performance requirements are beyond question.

[0003] In traditional ESD spring clip structures, the spring clip is placed in a positioning hole in the housing, with the side of the spring clip's support leg contacting the inner surface of the positioning hole, and the bottom surface of the support leg contacting the bottom surface of the positioning hole in the housing. During press-fitting, the ECU mounting bolt pushes against the top surface of the spring clip, making contact with it, thus grounding the PCB board to the housing through the spring clip. Due to the elastic deformation of the structure during press-fitting, the mounting bolt will retract after the press-fitting force is removed. The rebound amount of the traditional spring clip structure is insufficient to maintain contact with the mounting bolt, causing the spring clip to separate from the bolt, resulting in PCB board grounding failure and affecting ESD performance.

[0004] Therefore, in order to optimize the ESD performance of the ECU, the spring contact structure needs to be optimized to ensure that after the ECU is press-fitted, the mounting bolts on the PCB can make contact with the housing through the spring contact, so that the PCB is grounded and static electricity can prevent the circuit board from failing. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this utility model provides a spring sheet structure for ESD failure of the steering system control unit. The spring sheet structure is optimized to ensure that the spring sheet contacts the bolt after pressing, so that the PCB is grounded and conductive.

[0006] To achieve the above objectives, a spring structure for ESD failure of the steering system control unit is designed, characterized in that: the spring structure includes a spring top and S-level pins. The spring top has a quincunx-shaped plate structure with a through hole in the center. The petals of the spring top are connected to the S-level pins, which have an S-shaped bending structure. One end of the S-level pin is integrally connected to the spring top, and the other end of the S-level pin is folded outward.

[0007] Located at the outer edge of the top of the shrapnel, the included angle between two adjacent petals is 72°.

[0008] The S-level pin has an arc-shaped sheet structure.

[0009] The outward angle of the S-level pin end is 17.1°.

[0010] Compared with the prior art, this utility model provides a spring sheet structure for ESD failure of the steering system control unit. The spring sheet structure is optimized so that after pressing, it ensures that the spring sheet is in contact with the bolt, so that the PCB is grounded and conductive. Attached Figure Description

[0011] Figure 1 This is a three-dimensional view of the structure of this utility model.

[0012] Figure 2 This is a top view of the structure of this utility model.

[0013] Figure 3 This is the main view of the structure of this utility model.

[0014] Figure 4 This is a side view of the structure of this utility model.

[0015] Figure 5 This is a schematic diagram of the structure of this utility model installed in the positioning hole of the steering gear housing.

[0016] Figure 6 This is a schematic diagram of the press-fitting state of the structure of this utility model.

[0017] Figure 7 This diagram shows the relationship between the structure of this utility model, the steering gear housing, and the mounting bolts. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 4 As shown, the spring structure includes a spring top and S-level pins. The spring top 1 has a plum blossom-shaped plate structure. A through hole 2 is provided in the center of the spring top 1. The petals of the spring top 1 are connected to the S-level pins 3 respectively. The S-level pins 3 have an S-shaped bending structure. One end of the S-level pins 3 is integrally connected to the spring top 1, and the other end of the S-level pins 3 is folded outward.

[0020] Located at the outer edge of the top 1 of the shrapnel, the included angle between two adjacent petals is 72°.

[0021] S-pin 3 has an arc-shaped sheet structure.

[0022] The outward angle at the end of pin 3 of class S is 17.1°.

[0023] like Figures 5 to 7 As shown, when installing the spring sheet structure of this utility model, the spring sheet structure is embedded in the positioning hole 4 of the steering gear housing, the S-level pin 3 on the side of the spring sheet structure contacts the side of the positioning hole 4 of the steering gear housing, and the head of the mounting bolt 5 contacts the end of the S-level pin 3 of the spring sheet structure.

[0024] The spring sheet structure of this utility model has an S-level pin 3 in the form of a claw structure. The side of the S-level pin 3 of the spring sheet structure contacts the inner side of the positioning hole 4 of the steering gear housing, and the top 1 plane of the spring sheet structure contacts the bottom surface of the positioning hole 4 of the steering gear housing.

[0025] Simulation verification shows that even after the pressing force is removed and the mounting bolt 5 retracts after the pressing is completed, the spring sheet structure of this utility model can still effectively hold the mounting bolt 5, ensuring effective contact between the mounting bolt 5 and the spring sheet structure.

Claims

1. A spring clip structure for ESD failure of a steering system control unit, characterized in that: The spring sheet structure includes a spring sheet top and an S-level pin. The spring sheet top (1) has a plum blossom-shaped plate structure. A through hole (2) is provided in the center of the spring sheet top (1). The petals of the spring sheet top (1) are connected to the S-level pins (3). The S-level pins (3) have an S-shaped bending structure. One end of the S-level pins (3) is integrally connected to the spring sheet top (1), and the other end of the S-level pins (3) is folded outward.

2. The spring clip structure for ESD failure of the steering system control unit according to claim 1, characterized in that: Located at the outer edge of the top of the shrapnel (1), the included angle between two adjacent petals is 72°.

3. A spring clip structure for ESD failure of a steering system control unit according to claim 1, characterized in that: The S-level pin (3) is an arc-shaped sheet structure.

4. A spring clip structure for ESD failure of a steering system control unit according to claim 1 or 3, characterized in that: The outward angle of the end of the S-level pin (3) is 17.1°.

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