Electrical Connecting Apparatus Plate Spring Preload
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Solution Overview
Problem
Conventional electrical connecting apparatuses face challenges in achieving a good electrical contacting state without increasing the overdriving amount, leading to potential damage to contactors and electrodes, and often result in insufficient probe pressure for effective contact.
Innovation Solution
The apparatus features a support board with a plate spring that receives an initial load, allowing the center area to be biased upward, and a ring-shaped member that sandwiches the plate spring, ensuring that the probe pressure on the contactor is influenced by both the elastic deformation of the contactor and the plate spring, thereby maintaining a stable electrical contact without excessive overdriving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the overdriving amount is increased to achieve good electrical contacting state, then the contact reliability is improved, but the damage to contactors and electrodes increases
Solution Approach 1:
The plate spring is pre-loaded in the upward direction before the electrical test, creating an initial biased state. This preliminary action stores elastic potential energy that is released during the test, reducing the need for excessive overdriving and thereby minimizing damage to contactors and electrodes while maintaining reliable contact.
Solution Approach 2:
The invention changes the initial state parameter of the plate spring from neutral to biased upward through pre-loading. This parameter change modifies the force-displacement characteristics of the system, allowing for reduced overdriving amounts while achieving the same contact reliability, thus preventing damage to contactors and electrodes.
2Object-affected harmful factors
If the overdriving amount is decreased to prevent damage to contactors and electrodes, then the damage risk is reduced, but the probe pressure becomes insufficient for effective contact
Solution Approach 1:
The plate spring is pre-loaded in the upward direction before the electrical test, creating an initial biased state. This preliminary action stores elastic potential energy that is released during the test, reducing the need for excessive overdriving and thereby minimizing damage to contactors and electrodes while maintaining reliable contact.
Solution Approach 2:
The invention changes the initial state parameter of the plate spring from neutral to biased upward through pre-loading. This parameter change modifies the force-displacement characteristics of the system, allowing for reduced overdriving amounts while achieving the same contact reliability, thus preventing damage to contactors and electrodes.
3Device complexity
If the plate spring is kept parallel to the support board, then the structure is simple, but the probe pressure and overdriving amount are proportionally related causing contact issues
Solution Approach 1:
The plate spring is pre-loaded in the upward direction before the electrical test, creating an initial biased state. This preliminary action stores elastic potential energy that is released during the test, reducing the need for excessive overdriving and thereby minimizing damage to contactors and electrodes while maintaining reliable contact.
Solution Approach 2:
The invention changes the initial state parameter of the plate spring from neutral to biased upward through pre-loading. This parameter change modifies the force-displacement characteristics of the system, allowing for reduced overdriving amounts while achieving the same contact reliability, thus preventing damage to contactors and electrodes.
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 configuration ensures a stable and effective electrical contacting state by distributing the overdriving force, preventing irregular flexure of the plate spring and maintaining consistent probe pressure, thus reducing the risk of damage and ensuring reliable contact.
Implementation Method 1
the plate spring receives initial load to bring a state where at least the center area is biased toward the upper surface side of the support board
Implementation Method 2
the probe pressure acting on the probe tip of each contactor and the electrode comes under the influence of not only reactive force by elastic deformation of the contactor and the plate spring
Data Source
AI summary
An embodiment of an electrical connecting apparatus comprises a support board, a plate spring arranged on the support board, an attachment device attaching the plate spring to the support board, a block having an attachment surface directing downward, and a flexible circuit board in which a plurality of contactors are arranged. As for the block, the attachment surface for attaching the circuit board is protruded further to the lower side than the support board. The plate spring receives initial load to bring a state where at least a center area for attaching the block is biased toward the upper side. Thus, a good electrical contacting state can be obtained without increasing the overdriving amount.