Substrate Interconnection Structure Vibration Absorption
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Solution Overview
Problem
Existing substrate interconnection structures face reliability issues when subjected to vibrations along the mating and unmating directions, leading to wear and degradation of electrical connections due to sliding contacts, especially when vibrations occur in the direction of connector engagement and disengagement.
Innovation Solution
The substrate interconnection structure incorporates a movable part that elastically deforms in the mating and unmating directions with a lower load requirement than the relative positional displacement of contact points, allowing the contact points to maintain electrical contact without positional displacement, thereby reducing wear and enhancing connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If terminals slide with respect to each other in the mating and unmating directions to absorb vibration, then vibration absorption is achieved, but wear occurs in sliding portions and plating may come off, degrading connection reliability
Solution Approach 1:
The movable part is designed to dynamically change its deformation direction based on vibration direction. For vibrations intersecting the mating/unmating direction, the movable part elastically deforms in the same direction as vibration. For vibrations in the mating/unmating direction, the movable part elastically deforms in the width direction, preventing sliding contact and wear between terminals.
Solution Approach 2:
The movable part changes its effective stiffness and deformation characteristics based on the direction of applied vibration. By designing the movable part with specific geometric features (larger in width direction than thickness direction), it exhibits different elastic deformation behaviors for different vibration directions, optimizing vibration absorption while preventing wear.
2Object-affected harmful factors
If the movable part is designed to be larger in the width direction than in the thickness direction to enable elastic deformation in the front-back direction, then vibration absorption in intersecting directions is improved, but the structure becomes more complex
Solution Approach 1:
The movable part utilizes the natural elastic deformation characteristics of a single integrated structure. By designing the movable part to be larger in the width direction than in the thickness direction, it naturally deforms in the front-back direction when subjected to vibrations intersecting the mating/unmating direction, without requiring additional components or complex mechanisms.
3Object-affected harmful factors
If the movable part elastically deforms in the mating and unmating directions with lower load requirement, then vibration absorption is improved, but the contact points may experience positional displacement and wear
Solution Approach 1:
The movable part is designed with specific dimensional parameters (larger width than thickness) and material properties that determine its elastic deformation characteristics. These parameters are optimized so that the load required for elastic deformation in the mating/unmating direction is lower than the load required for relative positional displacement of contact points, ensuring vibration absorption occurs through elastic deformation rather than sliding.
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
This design effectively absorbs vibrations and maintains stable electrical contact even during resonance, reducing wear and improving connection reliability by allowing the movable part to deform before contact point displacement, thus preventing sliding and subsequent wear.
Implementation Method 1
the movable part elastically deforms in the mating and unmating directions with a lower load requirement than the relative positional displacement of contact points
Data Source
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AI summary
A plug connector electrically connected to a socket connector includes a movable housing engaged with the socket connector; a fixed housing secured to a first substrate; and a plug terminal having a plug contact portion in electrical contact with the socket connector engaged with the movable housing, and a movable part configured to support the fixed housing such that the fixed housing can be displaced with respect to the movable housing in engaging and disengaging directions of the socket connector with respect to the movable housing, while maintaining the contact of the plug contact portion with the socket connector.