Activation Component Testing Apparatus Force Limiting Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pushbutton switches and other activation components are often damaged during load testing due to excessive force, which is also transferred to load cells, leading to costly replacements and inefficiencies, especially when testing prototypes.
Innovation Solution
A testing apparatus comprising an outer sleeve, inner sleeve, plunger, bearings, and a compression spring is used to couple with the activation component and load cell, limiting the force applied and transferred, with the bearings disconnecting the force path at a predetermined maximum force, preventing further damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If load testing is performed on activation components, then the activation components can be tested for functionality, but excessive force is applied that damages both the activation components and load cells
Solution Approach 1:
A compression spring is positioned between the plunger and load cell to provide beforehand cushioning. The spring absorbs excessive force during testing by compressing, preventing damage to both the activation component and load cell while still allowing functional testing to occur.
Solution Approach 2:
The testing apparatus introduces intermediary components (plunger, bearings, compression spring) between the activation component and load cell. These intermediaries control force transmission, allowing testing functionality while protecting against excessive force damage.
2Productivity
If activation components are subjected to excessive force during testing, then testing can be performed, but the load cells are damaged and require replacement
Solution Approach 1:
The compression spring provides beforehand cushioning to protect load cells from excessive force during testing. This prevents damage and costly replacements while maintaining testing efficiency.
Solution Approach 2:
The testing apparatus acts as an intermediary system between the activation component and load cell, controlling force transmission to prevent load cell damage while enabling continuous testing operations.
3Measurement precision
If prototypes of activation components are damaged during testing, then testing data can be obtained, but the prototypes must be fixed or re-fabricated which is costly and time consuming
Solution Approach 1:
The compression spring provides beforehand cushioning to protect expensive prototypes from damage during testing. This preserves prototype integrity and eliminates time-consuming repair or re-fabrication while maintaining accurate testing data collection.
Solution Approach 2:
The testing apparatus serves as a protective intermediary that enables accurate measurement of activation component behavior without damaging the prototypes, thus avoiding costly and time-consuming repairs.
4Object-affected harmful factors
If force is limited during testing, then damage is prevented, but the amount of force that can be applied to fully test the activation component is restricted
Solution Approach 1:
The compression spring provides dynamic force limitation. During normal testing, the spring allows full force range application. When excessive force is detected, the spring compresses to limit the force, preventing damage while maintaining testing capability across the full force range.
Solution Approach 2:
The compression spring changes the force parameter dynamically during testing. It allows the force to increase to necessary testing levels, then automatically limits excessive force through compression, providing both full testing range and damage prevention.
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 solution prevents excessive force from being applied to the activation component and load cell, reducing the risk of damage and allowing for controlled testing without additional resistance, thus minimizing costs and preserving prototype integrity.
Implementation Method 1
a compression spring positioned between the plunger and the load cell
Implementation Method 2
a set of bearings positioned within the outer sleeve and in communication with the plunger and the inner sleeve
Data Source
AI summary
An activation component testing apparatus comprising an outer sleeve, an inner sleeve, a plunger, a number of bearings, and a compression spring. The outer sleeve forms an interior chamber having opposing first and second openings. The plunger, bearings, inner sleeve, and compression spring are disposed in the central cavity. The plunger includes a number of bearing recesses that engage the bearings such that the plunger is configured to transfer a compressive force applied to the activation component through the inner sleeve and compression spring to a load cell via the bearings when the plunger is in an extended position and urge the bearings out of engagement with the bearing recesses when the plunger is in a maximum force position such that the plunger cannot transfer additional compressive force to the load cell when the plunger is moved beyond the maximum force position.