Steering Column Rake Adjustment With Angled-Slot Cam Follower
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Solution Overview
Problem
Conventional rake adjustment mechanisms for steering columns require excessive space due to the configuration of actuators and pivot brackets, which is a limitation in applications with reduced space availability.
Innovation Solution
A system comprising a rake actuator, a jacket assembly, and a cam follower with arms extending through aligned but angled slots in two brackets, allowing for compact angular adjustment of the steering column without increasing the overall assembly size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional rake adjustment mechanisms use vertical actuators or pivot brackets, then the steering column can be adjusted vertically, but the assembly requires excessive space
Solution Approach 1:
The actuator is reoriented from a vertical configuration to an axial configuration (along the steering column axis), changing the dimension in which the adjustment force is applied. This dimensional change allows the same rake adjustment function to be achieved within a compact footprint, as the adjustment motion is transmitted through the cam follower mechanism rather than requiring vertical actuator space
Solution Approach 2:
A cam follower mechanism is introduced as an intermediary between the actuator and the jacket assembly. The cam follower converts the axial actuator motion into the necessary angular adjustment of the jacket assembly, enabling compact rake adjustment without requiring the actuator to be positioned vertically or requiring additional pivot bracket space
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
Enables compact and efficient rake adjustment of steering columns by utilizing a cam follower mechanism that adjusts the angular position of the jacket assembly within a smaller footprint, reducing space requirements compared to conventional designs.
Implementation Method 1
translation of the cam follower adjusts the angular position of the first bracket and the jacket assembly
Data Source
AI summary
A system for adjusting a rake of a steering column includes a rake actuator. The system also includes a jacket assembly. The system further includes a first bracket operatively coupled to the jacket assembly, the first bracket defining a first slot. The system yet further includes a second bracket defining a second slot, the second bracket fixed in a stationary position relative to the first bracket, the first and second slots oriented at different angles, but partially aligned. The system also includes a cam follower operatively coupled to the rake actuator, the cam follower having an arm extending through the first slot and the second slot, wherein translation of the cam follower adjusts the angular position of the first bracket and the jacket assembly.