Elastic Metal Contact With Stopper Projections Preventing Torque Detachment
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Solution Overview
Problem
Existing electrical contacts with complex structures and manufacturing processes are prone to torque-induced detachment from the electrical device over time, leading to unreliable connections.
Innovation Solution
A contact formed from a single piece of elastic metal with a base frame and integral spring arm, featuring stopper projections and projections to maintain a preload state, ensuring reliable electrical and mechanical attachment without torque-induced detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring arm is formed by inwardly bending side wall parts, then the contact can provide elastic preload, but the manufacturing process becomes complex
Solution Approach 1:
The contact is divided into functionally independent parts: side wall parts forming the base frame and a separate spring arm part. The spring arm is not formed by bending the side walls but is positioned and fixed separately using stopper projections, simplifying the manufacturing process while maintaining elastic preload functionality.
Solution Approach 2:
Stopper projections are introduced as intermediary elements to position and fix the spring arm relative to the base frame. These stoppers serve as mediators that enable simple assembly of the spring arm without complex bending operations, while still allowing the spring arm to provide elastic preload through its independent structure.
2Shape
If the soldering part extends horizontally with spring arm bending back, then the contact structure is formed, but torque lifts the front end of soldering part causing welding deterioration
Solution Approach 1:
The spring arm is designed with an asymmetric configuration where its vertical projection does not coincide with the center line of the base frame. The spring arm is positioned偏向 one side, creating an asymmetric force distribution that counteracts the torque tendency and prevents lifting of the soldering part front end.
Solution Approach 2:
The spring arm is pre-positioned in a biased state relative to the base frame using stopper projections. This preliminary positioning creates a counterbalancing effect that anticipates and prevents the torque-induced lifting force before it can deteriorate the welding condition.
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 contact provides a simple manufacturing process and maintains a consistent pushing force for reliable electrical connections, preventing torque-induced detachment and ensuring firm mechanical attachment.
Implementation Method 1
a spring arm formed integrally with the base frame and constrained by the base frame in a preload state, the spring arm having a forward extending portion extending forwardly from a front end of the bottom wall, a bent portion extending upwardly from the forward extending portion and then bending backwardly
Data Source
AI summary
The present invention relates to a contact and an electrical connector having such contacts. The contact is formed as a single piece of elastic metal sheet and includes a base frame and a spring arm restrained by the base frame in a preload state. The base frame includes two side walls each having a stopper projection formed in a plane within which a corresponding side wall is disposed. The spring arm is formed with opposite projections which are pressed down and constrained in position by the stopper projections respectively. The contact can be manufactured in a simple way and presents a high reliability.