Steering Column Single-Piece Transmission Element
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Solution Overview
Problem
Existing steering column designs are complex and costly due to the need for separate production and assembly of transmission elements and securing means, and they often lack interfaces for steering column switches, making them unsuitable for modern vehicles.
Innovation Solution
A single-piece transmission element with integrated securing means that provides a rotationally secure torque-conducting connection to the steering shaft, eliminating the need for additional securing elements and simplifying production and assembly, and includes positive-locking and non-positive-locking elements for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate transmission element and securing means are produced and assembled individually, then torque-conducting connection is achieved, but production and assembly complexity increases
Solution Approach 1:
The patent combines the transmission element and securing means into a single integrated component. The transmission element includes integrated securing means (such as pressing flanges, pressing surfaces, or positive-locking elements) that are formed as one piece with the torque-conducting transmission element itself, eliminating the need for separate securing components and reducing assembly steps.
Solution Approach 2:
The transmission element is designed to perform multiple functions simultaneously: it transmits torque from the steering shaft to the steering wheel, and it provides securing means for rotational and/or axial fixation. This multi-functional design eliminates the need for separate dedicated securing components.
2Reliability
If multiple successive connections are made between transmission element and steering shaft, then torque transmission is secured, but tolerance requirements and complexity increase
Solution Approach 1:
By integrating the securing means directly into the transmission element as a single component, the patent eliminates multiple successive connections and their associated cumulative tolerance requirements. The integrated design ensures direct engagement between the transmission element and steering shaft without intermediate connection steps.
3Adaptability or versatility
If traditional steering column design is used, then basic steering function is provided, but interface for steering column switch is lacking
Solution Approach 1:
The patent integrates the interface for the steering column switch directly into the cover unit as a built-in feature. This integrated interface allows for straightforward mounting of steering column switches (such as indicator switches, audio controls, or telephone controls) without requiring additional separate components or complex assembly procedures.
Data Source
AI summary
A steering column for a motor vehicle may include a steering shaft that is rotatably supported in a cover unit, an interface for fitting a steering column switch fixed relative to the cover unit, and a transmission element connected to the steering shaft so as to conduct torque by way of a securing means. The transmission element may include actuation means that is movable into operational engagement with the steering column switch fitted to the interface. The transmission element may be constructed in one piece together with at least one securing means for a rotationally secure connection to the steering shaft.