Low-cost grounding structure for steering system control unit
By designing a low-cost grounding structure in the steering system control unit, and using bent surfaces and screw connections to ensure close contact between the grounding point and the PCB control unit, the interference problem between the signal area and the high current area is solved, improving signal quality and reducing costs.
Patent Information
- Application Number
- CN202422910526.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the PCB control unit of a traditional steering system, there is a problem of mutual interference between the high current area and the signal area.
A low-cost grounding structure for a steering system control unit is designed. By placing the PCB control unit between the control unit's top cover and base, and using a bent surface and screw connection, the grounding point is ensured to be in close contact with the PCB control unit, thus avoiding signal interference.
This achieved improvements in signal quality and EMC characteristics, while simultaneously reducing production costs.
Smart Images
Figure CN223539891U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steering system technology, specifically a low-cost grounding structure for a steering system control unit. Background Technology
[0002] Traditional steering system PCB control unit structure such as Figure 5 As shown, the left side represents a high-current region composed of several power amplifiers, while the right side represents a signal region composed of chips. However, in actual use, the high-current region and the signal region can interfere with each other.
[0003] Therefore, an isolation structure was designed to solve the problem of mutual interference between electronic components. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, this utility model provides a low-cost grounding structure for a steering system control unit. The structure is simple, ensuring signal quality while reducing costs.
[0005] To achieve the above objectives, a low-cost grounding structure for a steering system control unit is designed, comprising a control unit cover, a control unit base, and a PCB control unit. The PCB control unit is located between the control unit cover and the control unit base. The left side of the upper surface of the control unit cover is flat, and the front and rear ends of the right side of the control unit cover are respectively provided with bent surfaces. The flat surface and the bent surfaces of the control unit cover are connected to the control unit base via left-side screws and right-side screws, respectively.
[0006] The left side of the lower end of the control unit cover fits into the upper left side of the control unit base.
[0007] The bottom surface of the bent surface on the right side of the control unit cover is in contact with the right side plane of the PCB control unit, and a connector is provided between the PCB control unit and the control unit base; the right-side screws pass through the control unit cover, the PCB control unit, the connector and the control unit base respectively.
[0008] A grounding point is provided between the bottom surface of the bent surface on the right side of the control unit cover and the right side plane of the PCB control unit.
[0009] The bend in the right side of the upper cover of the control unit is located on the outer side of the components on the PCB control unit.
[0010] A gap is provided between the grounding point and the components on the PCB control unit.
[0011] Compared with the prior art, this utility model provides a low-cost grounding structure for steering system control units. The structure is simple, which not only ensures that the signals of the components on the PCB control unit do not interfere with each other, improves the EMC characteristics and signal quality of the control unit, but also reduces costs. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is an exploded view of the structure of this utility model.
[0014] Figure 3 This is a cross-sectional view of the structure of this utility model.
[0015] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.
[0016] Figure 5 This is a schematic diagram showing the component distribution on the PCB control unit. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] In circuit design, to avoid interference between electronic component signals caused by EMC (electromagnetic compatibility), it is necessary to consider adequate grounding to improve signal reliability and accuracy.
[0019] In this utility model, such as Figures 1 to 4 As shown, a PCB control unit 2 is provided between the control unit cover 1 and the control unit base 3; the left side of the upper surface of the control unit cover 1 is a flat surface, and the front and rear ends of the right side of the control unit cover 1 are respectively provided with bending surfaces 1-1; the flat surface and the bending surface 1-1 of the control unit cover 1 are respectively connected to the control unit base 3 by left screw 4 and right screw 5.
[0020] The lower left side of the control unit cover 1 is in contact with the upper left side of the control unit base 3.
[0021] The bottom surface of the bent surface 1-1 on the right side of the control unit cover 1 is in contact with the right side plane of the PCB control unit 2, and a connector 6 is provided between the PCB control unit 2 and the control unit base 3; the right side screw 5 passes through the control unit cover 1, the PCB control unit 2, the connector 6 and the control unit base 3 respectively.
[0022] A grounding point 7 is provided between the bottom surface of the bent surface 1-1 on the right side of the control unit cover 1 and the right side plane of the PCB control unit 2.
[0023] The bend of the right side of the upper cover 1 of the control unit is located on the outside of the components on the PCB control unit 2.
[0024] There is a gap between grounding point 7 and the components on PCB control unit 2.
[0025] The control unit cover 1 is fixed to the control unit base 3 by left screw 4 and right screw 5. Near the area of right screw 5, such as... Figure 4 As shown, the control unit cover 1 has a bent surface 1-1. Through the bending structure, the control unit cover 1 and the PCB control unit 2 make contact at the fixing connection area of the right-side screw 5. The grounding point of the signal working area of the PCB control unit 2 (i.e., the bend) is located precisely in the contact area between the control unit cover 1 and the PCB control unit 2. During assembly, the right-side screw 5 passes through the control unit cover 1 and the PCB control unit 2, and is tightened. The control unit cover 1 and the PCB control unit 2 fit tightly in the area of the control unit grounding point (i.e., the bend). Since the control unit cover 1 is connected to the control unit base 3 via the left-side screw 4, and the control unit base 3 is connected to ground, the grounding point (i.e., the bend) of the PCB control unit 2 is firmly grounded, thereby ensuring the quality of the signal of the PCB control unit 2 itself and avoiding the potential risk of interference from other signals.
[0026] The control unit cover 1 and the PCB control unit 2 can be fixed in the control unit base 3 with only two right-side screws 5. Compared with other general designs, this utility model design saves the cost of one screw. Similarly, the same design can be used in the high-current operating area on the left side of the PCB control unit 2, which not only improves the current signal quality of the PCB control unit 2, but also saves one screw.
Claims
1. A low-cost grounding structure for a steering system control unit, comprising a control unit cover, a control unit base, and a PCB control unit, characterized in that: A PCB control unit (2) is provided between the control unit cover (1) and the control unit base (3); the left side of the upper surface of the control unit cover (1) is a plane, and the front and rear ends of the right side of the control unit cover (1) are respectively provided with bent surfaces (1-1); the plane and bent surfaces (1-1) of the control unit cover (1) are respectively connected to the control unit base (3) by left screw (4) and right screw (5).
2. The low-cost grounding structure for a steering system control unit according to claim 1, characterized in that: The lower left side of the control unit cover (1) is in contact with the upper left side of the control unit base (3).
3. The low-cost grounding structure for a steering system control unit according to claim 1, characterized in that: The bottom surface of the bent surface (1-1) on the right side of the control unit cover (1) is in contact with the right side plane of the PCB control unit (2), and a connector (6) is provided between the PCB control unit (2) and the control unit base (3); the right side screw (5) passes through the control unit cover (1), the PCB control unit (2), the connector (6) and the control unit base (3) respectively.
4. A low-cost grounding structure for a steering system control unit according to claim 3, characterized in that: A grounding point (7) is provided between the bottom surface of the bent surface (1-1) on the right side of the control unit cover (1) and the right side plane of the PCB control unit (2).
5. A low-cost grounding structure for a steering system control unit according to claim 3, characterized in that: The bend of the right side of the bend surface (1-1) of the control unit cover (1) is located on the outside of the components on the PCB control unit (2).
6. A low-cost grounding structure for a steering system control unit according to claim 4, characterized in that: A gap is provided between the grounding point (7) and the components on the PCB control unit (2).