Steering Column Module Edge Contact PCB Design
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Solution Overview
Problem
Existing steering column modules require complex and expensive plug connectors due to varying housing shapes, leading to inefficient use of printed circuit board space, especially with multiple functional components.
Innovation Solution
The module employs printed circuit boards with edge region contact surfaces for primary and secondary switching elements, connected via cables with connector elements to a common connector on the electronics unit, allowing for a more cost-effective and space-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct housing joining with plug-in connections is used for electrical connection, then reliable electrical connection is achieved, but device complexity and production cost increase due to complicated plug connectors
Solution Approach 1:
The patent applies universality by introducing a standardized connector design that can be used across all functional components (lever switches, sensors, etc.) regardless of their housing shapes. This single universal connector type replaces multiple specialized plug connectors, simplifying the overall system while maintaining reliable electrical connections.
Solution Approach 2:
The patent segments the electrical connection system into two independent parts: the connector element on the printed circuit board and the corresponding socket element on the functional component. This segmentation allows each part to be optimized independently and facilitates easier assembly and replacement.
2Reliability
If direct housing joining with plug-in connections is used, then electrical connection is achieved, but printed circuit board space utilization deteriorates
Solution Approach 1:
The patent moves the connector elements from the housing surface (2D plane) to the edge region of the printed circuit board. This dimensional change allows connectors to be positioned along the board's perimeter, maximizing the usable area of the printed circuit board while maintaining electrical connection functionality.
3Adaptability or versatility
If multiple specialized plug connectors are used for different functional components, then specific connection requirements are met, but manufacturing cost increases
Solution Approach 1:
The patent implements universality by designing a single type of standardized connector that can accommodate all functional components. This eliminates the need to manufacture multiple specialized connector types, significantly reducing production costs while maintaining the ability to connect various components with different housing shapes.
Solution Approach 2:
The patent applies homogeneity by making all connector elements identical in design and specification. This standardization simplifies the manufacturing process, reduces inventory complexity, and lowers production costs while maintaining consistent connection quality across all functional components.
4Adaptability or versatility
If multiple specialized plug connectors are used, then specific connection requirements are met, but assembly ease deteriorates
Solution Approach 1:
The universal connector design allows assembly workers to use the same connection procedure for all functional components, regardless of their type or housing shape. This standardization greatly simplifies the assembly process, reduces training requirements, and increases assembly speed while maintaining proper electrical connections.
Data Source
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AI summary
A steering column module for a motor vehicle comprises at least one lever switch having primary switching elements which are arranged at its end next to the steering column and can be actuated by pivoting its lever, and having secondary switching elements which are arranged at its end away from the steering column and can be actuated by control elements arranged thereon, as well as an electronic unit electrically connected to the on-board network and to the primary and secondary switching elements. The advantage of the steering column module according to the present invention, in comparison with the previously known prior art, is that it can be produced at considerably lower costs while retaining the compact structure of the entire module, and that it allows a substantially improved utilisation of the printed circuit board surfaces. According to the invention, this is achieved in that each of the primary and secondary switching elements, as well as the electronic unit, comprises a printed circuit board having, at its marginal regions, printed circuit sections designed as contact surfaces, and in that the switching elements are connected to the electronic unit by means of a set of lines provided with plug connector elements for contacting these contact surfaces.