Steering engine pressing block structure capable of reducing friction abnormal sound
By designing the steering gear pressure block structure and adopting a combination of shaft core structure and spring limit block, the transformation from surface contact to rolling friction was achieved, solving the problems of friction noise and lubricant consumption, and improving the stability and feel of the steering gear.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-13
AI Technical Summary
In traditional steering systems, the surface contact between the pressure block and the rack results in high friction, severe friction noise, and the lubricating grease is easily scraped away and reduced.
Design a steering gear pressure block structure that uses a shaft core structure to make the rotating shaft perpendicular to the rack, changing rotational friction into rolling friction, reducing the contact area, and using springs and limit blocks to adjust the preload and reduce the coefficient of friction.
It effectively reduces friction noise, reduces lubricant consumption, improves feel and product stability, and reduces steering gear no-load torque.
Smart Images
Figure CN223990056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steering system technology, specifically a steering gear pressure block structure that can reduce friction noise. Background Technology
[0002] In the design of steering gears, the pressure block usually has a contoured structure similar to the circumference of the rack. The preload is applied by contacting the rack through the contoured arc surface.
[0003] However, in the traditional curved structure of the pressure block liner, the liner and the rack are in surface contact. The friction is relatively large during the movement of the rack. During the reciprocating motion of the rack, it is easy to scrape and reduce the grease on the contact surface, which will produce abnormal noise. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, this utility model provides a steering gear pressure block structure that can reduce friction noise, decrease the friction between the pressure block and the rack, and increase the adjustment range of the preload mechanism.
[0005] To achieve the above objectives, a steering gear pressure block structure that can reduce friction noise is designed, including a pressure block end cover and a shaft core structure. The pressure block end cover is a cylindrical structure, and a shaft core structure is embedded in the lower part of the pressure block end cover. The shaft core of the shaft core structure is a cylindrical structure, and a rotating shaft is connected to the bottom of the shaft core structure. A spring is provided between the shaft core structure and the pressure block end cover.
[0006] The lower part of the pressure block end cap is an open structure, and the top of the pressure block end cap is a sealed structure.
[0007] The upper part of the shaft core structure is a cylindrical structure, and the bottom of the shaft core structure is a Y-shaped curved structure. A hole for the rotating shaft is provided on one side of the opening of the Y-shaped curved structure, and a T-shaped hole for restricting the rotating shaft from passing through is provided on the other side of the opening of the Y-shaped curved structure.
[0008] The upper inner side of the shaft core structure abuts against one end of the spring, and the other end of the spring abuts against the limiting block, which is located inside the pressure block end cover.
[0009] The rotating shaft is a cylindrical structure.
[0010] The limiting block is a cylindrical structure with a spring embedded in its lower part. The lower part of the limiting block is located on the upper inner side of the shaft core structure, and the top of the limiting block is connected to the top of the inner side of the pressure block end cover.
[0011] Compared with the prior art, this utility model provides a steering gear pressure block structure that can reduce friction noise, reduce friction between the pressure block and the rack, and increase the adjustment range of the preload mechanism. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is a cross-sectional view of the structure of this utility model. Detailed Implementation
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] In traditional pressure block liner curved structures, the contact between the liner and the rack is surface-to-surface. This results in significant friction during rack movement, and the rack's reciprocating motion easily scrapes and reduces the grease on the contact surface, causing abnormal noise. However, this new design, by assembling the rack through the pressure block hole, establishes a perpendicular rotation shaft on the core structure to the rack. This transforms the original sliding friction into rolling friction, changing surface contact to point contact, reducing the coefficient of friction, and thus minimizing friction-related noise. Furthermore, it maximizes the retention of lubricating grease on the rack surface, further reducing the probability of abnormal noise. Simultaneously, the reduced contact area helps lower the steering gear's no-load torque and driving force, effectively improving the feel and stability of the product.
[0016] This product mainly consists of two parts: a guide block end cap 1 and an adjusting shaft core structure 2. One end of the shaft core structure 2 can be fixed to the pressure block end cap 1. The shaft core structure 2 mainly consists of four parts: a rotating shaft 3, a spring 4, and a limiting block 5 that fixes the spring 4. During the clamping process, the preload can be adjusted by the spring 4 and the limiting block 5 to reduce vibrations generated during rack or vehicle movement. The rotating shaft 3 can convert the sliding friction of the rack during lateral movement into rolling friction, reducing the contact area between the two, lowering the coefficient of friction, and thus reducing the no-load torque of the steering gear.
[0017] like Figure 1 , Figure 2 As shown, the pressure block end cover 1 is a cylindrical structure, and a shaft core structure 2 is embedded in the lower part of the pressure block end cover 1. The shaft core of the shaft core structure 2 is a cylindrical structure, and the bottom of the shaft core structure 2 is connected to the rotating shaft 3. A spring 4 is provided between the shaft core structure 2 and the pressure block end cover 1.
[0018] The lower part of the pressure block end cap 1 is an open structure, and the top of the pressure block end cap 1 is a sealed structure.
[0019] The upper part of the shaft core structure 2 is a cylindrical structure, and the bottom of the shaft core structure 2 is a Y-shaped curved structure. A hole 2-1 for the rotating shaft 3 to pass through is provided on one side of the opening of the Y-shaped curved structure, and a T-shaped hole for restricting the rotating shaft 3 to pass through is provided on the other side of the opening of the Y-shaped curved structure.
[0020] The upper inner side of the shaft core structure 2 abuts against one end of the spring 4, and the other end of the spring 4 abuts against the limiting block 5. The limiting block 5 is located inside the pressure block end cover 1.
[0021] The rotating shaft 3 has a cylindrical structure.
[0022] The limiting block 5 is a cylindrical structure. A spring 4 is embedded in the lower part of the limiting block 5. The lower part of the limiting block 5 is located on the upper inner side of the shaft core structure 2. The top of the limiting block 5 is connected to the inner top of the pressure block end cover 1.
[0023] The rotating shaft 3 has a cylindrical structure, and the bottom of the shaft core structure 2 has a Y-shaped bend. One end of the Y-shaped bend has a T-shaped hole with a smaller diameter than the rotating shaft 3. The other end of the Y-shaped bend has a circular hole 2-1, which acts as a limit when the rotating shaft 3 is inserted from the other side. The diameter of the other end hole 2-1 is slightly larger to facilitate the insertion of the rotating shaft 3. During assembly, the structure of the rotating shaft 3 is compressed into the pressure block end cover 1, which limits its movement and prevents it from falling out.
[0024] The basic principles, main features, and advantages of this utility model have been described above. In practical applications, the fit between the pressure block end cap and the shaft core structure, the spring stiffness, etc., can be adjusted according to actual needs, provided that sufficient verification has been conducted.
Claims
1. A steering gear pressure block structure that can reduce friction noise, comprising a pressure block end cover and a shaft core structure, characterized in that: The briquetting end cover (1) is a cylindrical structure, an axle core structure (2) is embedded in the lower part of the briquetting end cover (1), the axle core body of the axle core structure (2) is a cylindrical structure, the bottom of the axle core structure (2) is connected with a rotating shaft (3), and the axle core structure (2) is provided with a spring (4) between the briquetting end cover (1).
2. The rack block structure of the power steering gear capable of reducing frictional noise according to claim 1, wherein: The lower part of the briquetting end cover (1) is an open structure, and the top of the briquetting end cover (1) is a sealing structure.
3. The rack block structure of the power steering gear capable of reducing frictional noise according to claim 1, wherein: The upper part of the axle core structure (2) is a cylindrical structure, the bottom of the axle core structure (2) is a Y-shaped bending structure, one side of the opening of the Y-shaped bending structure is provided with a hole (2-1) through which the rotating shaft (3) passes, and the other side of the opening of the Y-shaped bending structure is provided with a T-shaped hole through which the rotating shaft (3) passes.
4. The rack block structure of the power steering gear capable of reducing frictional noise according to claim 1 or 3, characterized in that: One end of the spring (4) is in abutment with the inner side of the upper part of the axle core structure (2), the other end of the spring (4) is in abutment with a limiting block (5), and the limiting block (5) is located in the briquetting end cover (1).
5. The rack structure of a power steering gear capable of reducing frictional noise according to claim 1 or 3, wherein: The rotating shaft (3) is a cylindrical structure.
6. The rack block structure of a power steering gear capable of reducing frictional noise according to claim 4, wherein: The limiting block (5) is a cylindrical structure, the lower part of the limiting block (5) is embedded with a spring (4), the lower part of the limiting block (5) is located in the inner side of the upper part of the axle core structure (2), and the top of the limiting block (5) is connected with the inner top of the briquetting end cover (1).