Steering Column Magnetic Locking Mechanism
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Solution Overview
Problem
Existing adjustable steering columns lack a reliable mechanism to securely lock and release the relative movement between steering column members, which can lead to unintended adjustments during vehicle operation.
Innovation Solution
A locking mechanism with a magnetically retained handle that transitions between locked and release positions, utilizing a clamping bolt and hydraulic lock to control the telescope and tilt locking mechanisms, ensuring secure locking and easy release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to prevent unintended adjustments, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical locking mechanisms with a magnetic field-based locking member. The locking member includes a magnet that interacts with a ferromagnetic material in the steering column, eliminating the need for complex mechanical interlocks, springs, and cam mechanisms while achieving reliable positioning and locking functionality.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the locking member and the steering column. This magnetic field mediates the locking action, allowing the locking member to engage and disengage the steering column components without direct mechanical contact, thereby simplifying the overall mechanism while maintaining reliability.
2Ease of operation
If a magnetic locking mechanism is used, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates a spring mechanism that automatically returns the locking member to its engaged position after manual displacement. This preliminary action ensures that the locking member is pre-positioned correctly before operation, reducing the precision required during manufacturing while maintaining ease of operation through automatic resetting.
Solution Approach 2:
The patent utilizes the magnetic field strength as a variable parameter that can be adjusted through the selection of different magnet materials and sizes. By changing the magnetic field parameters, the system achieves reliable locking without requiring extremely precise manufacturing tolerances, as the magnetic attraction can compensate for minor positioning variations.
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
The solution provides a secure locking mechanism that prevents unintended adjustments, allowing precise control over the steering column's axial and angular positions, enhancing safety and usability.
Implementation Method 1
A magnet retains the locking member in at least one of the locking position and the release position
Data Source
AI summary
A steering column for use in a vehicle including first and second steering column members movable relative to each other. A locking mechanism prevents relative movement between the first and second steering column members. A locking member has a locked position in which the locking mechanism prevents relative movement between the first and second steering column members. The locking member has a release position in which the locking mechanism permits relative movement between the first and second steering column members. A magnet retains the locking member in at least one of the locking position and the release position.