Electronics Module Latching Mechanism for Compact Force Distribution
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Solution Overview
Problem
Existing electronic module assembly methods are complex and inefficient, particularly in absorbing forces during plug-in and plug-out operations, and result in non-compact housing designs.
Innovation Solution
A two-part housing with a latching device that includes a latching lug and web, allowing for simple and cost-effective mounting of the printed circuit board, providing additional stability and force transmission without the need for separate plug connections, enabling a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the printed circuit board is equipped directly with a plug connection to reduce geometric dimensions, then the electronic module becomes more compact, but the printed circuit board must absorb both bearing forces and plug-in forces which increases the complexity of force absorption
Solution Approach 1:
The force absorption function is segmented between the printed circuit board and the housing. The housing with its latching device absorbs the plug-in forces, while the printed circuit board only needs to bear its own weight and minor forces, eliminating the need for the PCB to handle high mechanical stresses
Solution Approach 2:
The housing acts as an intermediary structure between the printed circuit board and the plug connection. It transfers and absorbs the mechanical forces from plug-in operations, protecting the printed circuit board from direct exposure to these forces
2Ease of manufacture
If simple plastic domes are used to store the printed circuit board, then the assembly process becomes simpler, but the connection quality and force absorption capability are insufficient
Solution Approach 1:
The latching device incorporates curved surfaces and rounded edges that facilitate easy insertion and automatic alignment of the printed circuit board, maintaining the simplicity of the assembly process while providing robust mechanical engagement
Solution Approach 2:
The housing is designed as a composite structure combining rigid materials for strength with flexible latching elements. This allows the housing to provide both the simplicity of a single-piece construction and the force absorption capability of a complex multi-component assembly
3Strength
If screwing or riveting of the printed circuit board is used, then the connection strength is improved, but the procedural complexity increases
Solution Approach 1:
The complex mechanical fastening systems (screws, rivets) are replaced with a snap-fit latching mechanism. This maintains the connection strength through proper mechanical engagement while eliminating the need for multiple fastening operations and tools
Solution Approach 2:
The latching device is designed to automatically engage and secure the printed circuit board during the assembly process without requiring additional fastening steps. The structure itself performs the fastening function through its geometric design, eliminating the need for separate screwing or riveting operations
Data Source
AI summary
The present invention relates to an electronics module (10) having at least one printed circuit board (20) and a housing (30) which surrounds the at least one printed circuit board (20) and has at least one upper part (32) and at least one lower part (34), wherein the housing (30) has at least one latching apparatus (40) for the printed circuit board (20) in order to transmit force from the printed circuit board (20) to the housing (30), and the printed circuit board (20) has at least one opening (22) for interacting with the at least one latching apparatus (40).