Steering Apparatus Bending Plate Vibration Suppression
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Solution Overview
Problem
The free end of the bending plate in a vehicle's steering column vibrates during normal conditions, causing noise and interfering with surrounding parts, which affects the steering feel and reduces the stability of the collapse operation.
Innovation Solution
A steering apparatus with an upper tube, a bending plate having a fixing portion, an insertion portion, and a bending portion, and a support member that presses the insertion portion toward the inner surface of the upper tube to prevent collisions and absorb vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bending plate is designed with a free end for collapse operation, then the shock absorption capability is improved, but the free end vibrates during normal conditions causing noise and interfering with surrounding parts
Solution Approach 1:
A support member is introduced as an intermediary element between the bending plate and the upper tube. This support member contacts and supports the free end of the bending plate, preventing it from vibrating and interfering with surrounding parts during normal operation, while still allowing the bending plate to perform its collapse function when needed
2Reliability
If the bending plate free end is extended for better collapse operation, then the shock absorption capability is improved, but the interference with surrounding parts increases
Solution Approach 1:
The support member acts as a mediator that enables the bending plate to have sufficient length for effective collapse operation while preventing the free end from extending into the path of surrounding parts. The support member restricts the movement range of the free end, eliminating interference with the steering shaft and other components
3Object-generated harmful factors
If a support member is added to suppress vibration, then the noise generation is reduced, but the device complexity increases
Solution Approach 1:
The support member utilizes elastic deformation as a phase transition mechanism. During normal operation, the support member elastically deforms to support and stabilize the bending plate free end, suppressing vibration. During collapse operation, the support member yields or deforms plastically to allow the bending plate to perform its shock absorption function without restriction
Solution Approach 2:
The support member is designed to automatically adjust its support characteristics based on the operational state. It provides rigid support during normal operation to prevent vibration, and becomes compliant during collapse operation, eliminating the need for complex control mechanisms or sensors
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents interference between parts, suppresses noise generation, and enhances the stability of the collapse operation while minimizing cost increase.
Implementation Method 1
suppresses noise caused by vibration
Implementation Method 2
a support member coupled to an inner surface of the upper tube and pressing the insertion portion toward the inner surface of the upper tube
Data Source
AI summary
According to the present embodiments, a steering apparatus for a vehicle may be provided, which includes an upper tube for receiving a steering shaft, a fixing portion coupled to an outer surface of the upper tube, an insertion portion located on the inner side of the upper tube, and a bending plate including a bending portion connecting the fixing portion and the insertion portion.