Steering Column Track Deviation Sensing With Low-Play Clamping
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Solution Overview
Problem
Existing track deviation sensing mechanisms for steering columns face frequent failure due to constant play and friction between parts, necessitating a more reliable and durable solution that minimizes these issues and allows for easy retrofitting.
Innovation Solution
A track deviation sensing mechanism comprising a sleeve, a sensor, a ring, and locking parts with snap fit or interference fit arrangements, where the first part cooperates with the sleeve and ring to transmit rotational movement, and a second part clamps the sensor, first part, and sleeve to prevent axial displacement, reducing play and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple separate components are used in the sensing mechanism, then the mechanism can be assembled, but play between parts increases friction and reduces reliability
Solution Approach 1:
The patent merges the magnet mounting structure with the steering column and integrates the sensor into a fixed position on the vehicle body or steering mechanism. By combining the magnet and its mounting into a single unit attached to the rotating steering column, and positioning the sensor in a fixed location, the design eliminates relative movement and play between separate sensing components while maintaining ease of assembly
2Reliability
If a robust sensing mechanism is designed to eliminate play and friction, then service life increases, but device complexity may increase
Solution Approach 1:
The patent uses a magnetic field-based sensing system that requires no mechanical linkage between the steering column and the sensor. A magnet is attached to the steering column and the sensor detects its position changes as the column rotates. This approach achieves high reliability by eliminating mechanical friction and play while keeping the structure simple - only requiring a magnet, a sensor, and their mounting positions
Data Source
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AI summary
The present invention discloses a track deviation sensing mechanism (10) for a steering column (1). The track deviation sensing mechanism (10) includes a sleeve (12), a sensor (14) with a ring (16), a first part (18) and a second part (20) having their respective opening which are coaxial. The sleeve (12), the sensor (14), the ring (16), the first part (18) and the second part (20) are coaxially arranged along a common axis X. The first part (18) and the second part (20) are made of a polymeric material.