Steering Output Shaft Limiting Member for Wear-Resistant Stability
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Solution Overview
Problem
The existing steering apparatuses for vehicles lack a robust structure to limit circumferential movement of the rack shaft, leading to instability, excessive wear, and movement limiting errors, which affect the performance and safety of large-capacity vehicles, especially during long-term use.
Innovation Solution
A steering apparatus with a circumferential movement limiting member on the output shaft that fits within a corresponding limiting part in the housing, enhancing the stability and reliability by restricting circumferential rotation and incorporating a structural reinforcement member for improved strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no circumferential movement limiting structure is provided for the rack shaft, then the structure is simpler, but the stability and reliability of the steering apparatus deteriorates due to excessive circumferential movement and wear
Solution Approach 1:
The circumferential movement limiting function is segmented from the housing and implemented through a separate circumferential movement limiting member that is disposed on the output shaft. This member includes a circumferential limiting surface that cooperates with a limiting groove in the housing to restrict circumferential movement, thereby improving reliability without significantly complicating the overall structure.
Solution Approach 2:
The circumferential movement limiting member acts as an intermediary element between the output shaft and the housing. It includes a circumferential limiting surface that interfaces with the limiting groove in the housing, effectively mediating the circumferential movement constraint and reducing direct wear between the output shaft and housing.
2Device complexity
If a weak circumferential movement limiting structure is provided, then the device complexity is low, but the structure suffers from serious wear and reduced reliability after prolonged operation
Solution Approach 1:
The circumferential movement limiting member is pre-configured with a circumferential limiting surface that is designed to engage with the limiting groove in the housing from the beginning of operation. This preliminary configuration ensures that circumferential movement is constrained from the start, preventing excessive wear and extending the service life of the limiting structure.
Solution Approach 2:
The circumferential movement limiting member is designed to dynamically adapt to operational conditions. It can rotate together with the output shaft during normal operation and only engages with the limiting groove when circumferential movement exceeds the allowed limit, providing a dynamic response that extends structure life.
3Ease of operation
If the output shaft is allowed free circumferential rotation, then the ease of operation is high, but the stability of the steering apparatus deteriorates due to movement limiting errors and vibration
Solution Approach 1:
The circumferential movement limiting member is designed with a circumferential limiting surface that provides localized constraint in the circumferential direction while maintaining freedom of movement in the axial direction. This local quality approach allows the output shaft to move freely axially for steering operation while preventing unwanted circumferential rotation that would cause instability.
Data Source
AI summary
A steering apparatus and an all-terrain vehicle are provided. The steering apparatus comprises a housing provided with a circumferential movement limiting part; an input shaft disposed in the housing; an output shaft disposed in the housing and being in transmission coupling with the input shaft, wherein the output shaft is movable axially in an axial direction of the output shaft in the housing; and a circumferential movement limiting member disposed on the output shaft and being in fit with the circumferential movement limiting part for limiting circumferential movement.