Anti-buckling Spring Housing for Toggle Switch Assembly
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Solution Overview
Problem
The existing switch assemblies experience spring buckling during the operation of toggle switches, leading to slow switch operation, reduced opening and closing force, damage to contact members, and a shorter lifespan.
Innovation Solution
A switch assembly design that includes a spring housing over the actuating spring to prevent buckling, with a toggle switch and trunnion mechanism that maintains contact engagement and separation, ensuring the spring remains stable during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a spring is used to provide snap action for quick switching, then the opening and closing speed of contact members is improved, but the spring may buckle during operation which reduces reliability
Solution Approach 1:
A guide member is introduced as an intermediary component between the spring and the toggle switch. The guide member provides a surface that guides the spring during compression and extension, preventing lateral displacement and buckling while allowing the spring to maintain its force application to the toggle switch for quick contact member operation.
2Device complexity
If the spring is allowed to move freely with the toggle switch, then the device complexity is reduced, but the spring will buckle causing slow switch operation and reduced contact force
Solution Approach 1:
The guide member serves as a simple intermediary structure that constrains the spring's lateral movement without adding complex mechanisms. It provides a guiding surface that prevents buckling while allowing axial movement, thereby maintaining fast switch operation and adequate contact force without significantly increasing device complexity.
3Duration of action of stationary object
If the spring is constrained to prevent buckling, then the durability and life of the switch assembly is improved, but the device complexity increases due to additional housing structures
Solution Approach 1:
The guide member is integrated with the existing housing structure of the switch assembly. The housing includes a guide surface formed as part of its internal structure, combining the protective and guiding functions into a single component. This merging approach prevents spring buckling and extends switch assembly life without adding separate complex housing structures.
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
Prevents spring buckling, enabling quick and reliable operation, increased contact force, reduced damage, and extended switch assembly life, resulting in a safer and more durable switch assembly.
Implementation Method 1
A spring stores the energy necessary to provide a snap action of the switch assembly, thereby facilitating the quick opening and closing of the contact members
Data Source
AI summary
A switch assembly includes a cover connected to a base to form a switch housing and a toggle switch movably connected to the housing. The toggle switch has a lower portion disposed within the housing and a handle disposed externally of the housing such that movement of the handle moves the toggle switch between off and on positions. A spring is disposed within the housing. A first end of the spring is connected to the base and a second end of the spring is connected to the lower portion of the toggle switch. A spring housing is disposed over at least a portion of the spring to prevent buckling of the spring when the spring moves with the toggle switch. By substantially preventing spring buckling, the switch assembly is safer and has a longer life.