Rotary Switch Display Mounting With Transverse Insertion
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Solution Overview
Problem
Existing arrangements for mounting electronic displays at the center of rotary switches in motor vehicle control panels are complex and prone to reliability issues due to difficult electrical connections and require numerous assembly steps.
Innovation Solution
A simplified mounting arrangement featuring a support board with an electrical connection device, a cylindrical box with a transverse container for display insertion, and a flexible elastomer connector, along with a protective window and base for secure and correct display positioning and backlighting, facilitating easier assembly and minimizing damage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display is mounted on the upper axial end of the cylindrical body with an electrical connection web extending to the printed circuit board, then the display can be electrically connected to the control circuit, but the assembly process becomes complex and the electrical connection becomes difficult to make reliably
Solution Approach 1:
The invention divides the mounting arrangement into distinct functional modules: the cylindrical body forms a container for the display, the support board carries the electrical connection device, and these are assembled separately then combined. This segmentation allows each component to be optimized independently and simplifies the overall assembly process while maintaining reliable electrical connections through the web extending from the display's connection edge to the printed circuit board.
2Ease of operation
If the display is inserted axially into the cylindrical box, then the assembly might be simpler, but the display cannot be retained axially and may be improperly positioned or damaged
Solution Approach 1:
The invention changes the insertion direction from axial to transversal (perpendicular to the axis). The display is inserted through a transversal opening in the cylindrical body, allowing it to pass through the wall of the container. This dimensional change enables both easy insertion and secure retention, as the display can be guided through the opening and then locked in place by retention elements within the container, preventing improper positioning and damage.
3Manufacturing precision
If the display is inserted transversally into the cylindrical box, then axial retention is ensured and positioning is improved, but the assembly process becomes more complex
Solution Approach 1:
The invention merges the display container function with the cylindrical body of the rotary switch into a single integrated component. The container is formed as part of the cylindrical body structure, eliminating the need for separate mounting brackets or housings. This integration simplifies the assembly process by reducing the number of parts to be assembled while maintaining the precise transversal insertion and axial retention capabilities provided by the container design.
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 simplifies the assembly process, ensures proper display orientation, and enhances reliability by providing axial retention and optimized backlighting, while minimizing the risk of improper positioning and damage during assembly.
Implementation Method 1
the flexible connector is made of elastomer which is designed to be axially compressed between connection terminals of the board and connection terminals of the display
Data Source
AI summary
Arrangement for mounting an electronic display (30) at the centre of a rotary switch (12), including:a support board (18),an electrical connection device (74) which is arranged on the board (18) in order to connect the display (30) to an electronic control circuit,a cylindrical box (32) which is mounted on the board and which forms the fixed central body of the rotary switch (12),an annular body (34) forming a rotor which is mounted in rotation on the cylindrical box about an axis so as to form a turning part of the rotary switch (12),characterized by the fact that the cylindrical box (32) includes a container designed to receive the display (30) by transversal insertion, relative to the axis of the rotary switch (12).