Sensor cover for steering engine
By introducing an upper cover, a lower cover, and a corrugated rubber structure into the sensor cover, the problem of steering lag caused by poor fit between the sensor cover and the sensor unit assembly was solved, resulting in better steering lag and driving experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOSCH HUAYU STEERING SYSTEMS (YANTAI) CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-28
AI Technical Summary
The existing sensor cover does not fit well with the sensor unit assembly and the steering gear housing, resulting in poor steering gear lag, which affects the vehicle's automatic steering wheel return and driving feel.
The system employs an upper cover, a lower cover, and a corrugated rubber structure. The corrugated rubber absorbs the force exerted by the sensor cover on the sensor unit assembly during assembly, reducing the force exerted on the sensor by surrounding components and ensuring that the steering gear's hysteresis meets specifications.
It effectively reduces the radial force of the sensor cover on the sensor unit assembly, improves the hysteresis of the steering gear, and enhances the automatic return-to-center performance and driving feel of the vehicle steering wheel.
Smart Images

Figure CN224171011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive steering technology, specifically to a sensor cover for a steering gear. Background Technology
[0002] Steering lag is a crucial indicator of a car's steering system, affecting the steering wheel's automatic return to center and the driving feel. Current standards generally require steering lag to be between 0 and 0.4 mm. Poor lag leads to poor automatic steering wheel return to center and a feeling that the car's steering is not synchronized with the steering wheel's movement. The quality of lag is significantly influenced by the coordination of the sensors and surrounding mechanical components.
[0003] Existing technologies such as Figure 1 As shown, after the sensor unit assembly 2 is inserted into the long housing 3 of the steering gear, the sensor cover 1 is press-fitted in. The lower claws of the sensor cover engage with the long housing 3, and the upper mating hole of the sensor cover engages with the sensor unit assembly 2. During installation, the eight claws of the sensor cover 1 will be locked onto the long housing 3. The long housing 3 of the steering gear is a rigid component, while the sensor cover 1 and the sensor unit assembly 2 are both rigid components. When the size or position of the claws that engage with the long housing 3 of the sensor cover 1 is incorrect, or when the size or position of the hole that engages with the sensor unit assembly 2 of the sensor cover 1 is incorrect, the sensor unit assembly 2 can easily be subjected to additional radial force from the sensor cover 1, resulting in poor hysteresis of the steering gear. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a sensor cover for a steering gear, comprising an upper cover, a lower cover, and corrugated rubber; the lower cover is annular in shape with a protruding claw at the bottom, the claw being used to engage with the long housing of the steering gear to fix the sensor cover onto the long housing; the upper cover is cylindrical in shape, the upper interface being used to engage with the sensor unit assembly of the steering gear to fix the sensor cover to the sensor unit assembly; the corrugated rubber is annular and is an elastic body; the lower cover and the upper cover are respectively fixedly connected to the corrugated rubber.
[0005] Preferably, the upper cover is made of hard plastic.
[0006] Preferably, the lower cover is made of hard plastic.
[0007] Compared with the prior art, this utility model absorbs the force exerted by the sensor cover on the sensor unit assembly during the assembly process through the corrugated rubber structure, reduces the force exerted on the sensor by the surrounding components, and ensures the lag of the entire steering gear. Attached Figure Description
[0008] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0009] Figure 1 Schematic diagram of the sensor cover and sensor unit assembly and the long housing of the steering gear in the prior art;
[0010] Figure 2 This is a schematic diagram of the sensor cover structure in Example 1. Detailed Implementation
[0011] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can fully understand other advantages and technical effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of this utility model can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this utility model thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
[0012] Example 1
[0013] like Figure 2 As shown, this embodiment provides a sensor cover for a steering gear, including an upper cover 4, a lower cover 5, and corrugated rubber 6. The lower cover 5 is annular in shape with protruding claws at the bottom, which are used to engage with the long housing of the steering gear to fix the sensor cover onto the long housing. The upper cover 4 is cylindrical in shape, with an upper interface for engaging with the sensor unit assembly of the steering gear to fix the sensor cover to the sensor unit assembly. The corrugated rubber 6 is annular and is an elastic body. The lower cover 5 and the upper cover 4 are respectively fixedly connected to the corrugated rubber 6. The upper and lower covers are made of hard plastic.
[0014] This invention redesigns the existing sensor cover from a single rigid plastic component into a corrugated rubber structure that absorbs external forces. This absorbs the forces exerted on the sensor unit assembly by the sensor cover during assembly, reducing the forces exerted on the sensor by surrounding components and ensuring the overall steering gear lag performance.
[0015] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.
Claims
1. A sensor cover for a steering gear, characterized in that, Includes the upper cover, lower cover, and corrugated rubber; The lower cover is annular in shape and has protruding claws at the bottom. The claws are used to engage with the long housing of the steering gear to fix the sensor cover onto the long housing. The upper cover is cylindrical, and the upper interface is used to cooperate with the sensor unit assembly of the steering gear to fix the sensor cover to the sensor unit assembly. The corrugated rubber is ring-shaped and is an elastomer; the lower cover and the upper cover are fixedly connected to the corrugated rubber.
2. The sensor cover for a steering gear according to claim 1, characterized in that, The upper cover is made of hard plastic.
3. The sensor cover for a steering gear according to claim 1, characterized in that, The lower cover is made of hard plastic.