Annular Frame Captive Snap-Action Disc Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing temperature-dependent switching mechanisms are complex and costly to assemble, requiring precise manufacturing and allowing for reliable testing only after complete assembly, leading to high production costs and potential damage during assembly.
Innovation Solution
A temperature-dependent switching mechanism with an annular frame that captively holds the bimetal and spring snap-action discs, allowing for pre-production and testing without complete assembly, enabling simpler and cost-effective construction and assembly, and accommodating various housing types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the switching mechanism uses loose snap-action discs without an annular frame, then the assembly allows for flexible installation, but the manufacturing precision and assembly reliability deteriorate due to potential damage during assembly and inability to test before installation
Solution Approach 1:
The patent merges the snap-action discs with an annular frame to form an integrated switching mechanism assembly. The frame provides structural support and positioning for the bimetal and spring snap-action discs, allowing the entire assembly to be tested and validated before installation into the housing, thereby improving reliability while maintaining assembly simplicity.
Solution Approach 2:
The patent implements preliminary assembly and testing of the switching mechanism outside the housing. The annular frame enables the snap-action discs to be pre-assembled and functionally tested before being installed into the final housing, allowing defects to be detected and corrected prior to final assembly, thus improving reliability without complicating the manufacturing process.
2Reliability
If the switching mechanism is completely assembled before testing, then comprehensive functionality can be verified, but the device complexity and production costs increase due to difficult disassembly for repairs or modifications
Solution Approach 1:
The patent segments the switching mechanism into a modular assembly consisting of the annular frame and snap-action discs that can be tested independently, separate from the housing. This segmentation allows comprehensive functional testing of the switching mechanism while maintaining the ability to easily disassemble and service individual components without dealing with the entire closed system.
3Ease of manufacture
If the snap-action discs are held loosely without captivation, then the assembly process is simpler, but the service life decreases due to potential damage during assembly and operation
Solution Approach 1:
The patent combines the snap-action discs with the annular frame through captivation, creating a protected integrated assembly. The frame shields the snap-action discs from damage during assembly and operation while maintaining their functional simplicity, thereby extending service life without significantly complicating the manufacturing process.
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 simplifies the assembly process, reduces production costs, and extends the service life of switches by protecting the snap-action discs and allowing for automatic assembly, while also compensating for installation tolerances and providing a current transfer member to prevent arc damage.
Implementation Method 1
a temperature-dependent switching mechanism (10) comprising a bimetal snap-action disc (11)
Implementation Method 2
and preferably further a spring snap-action disc (12)
Data Source
AI summary
A temperature-dependent switching mechanism is equipped with a bimetal snap-action disc and a spring snap-action disc, which carries a movable contact part, the bimetal snap-action disc and the spring snap-action disc being captively held in an annular frame.