Key Switch Assembly With Internal Snap Locking Against Tampering
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Solution Overview
Problem
Conventional key switch assemblies face issues with wear and tampering due to the design of the terminal contact assembly and key cylinder assembly, which are assembled as a singular unit, leading to potential disassembly and environmental exposure of internal components.
Innovation Solution
A key switch assembly design featuring positive snap connections between the terminal contact housing and key cylinder housing, secured within an internal chamber, ensuring the connections are inaccessible externally, providing a tamper-proof mechanism and maintaining a consistent arrangement of components to mitigate wear and environmental exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the terminal contact assembly and key cylinder assembly are assembled as a singular unit, then the structural integrity is improved, but the vulnerability to tampering and wear increases due to accessible external connections
Solution Approach 1:
The patent applies nesting by placing the snap connection features within the internal chamber of the housing, where the first snap feature is received by the second snap feature in a nested configuration. This nested arrangement protects the connection mechanisms from external tampering while maintaining structural integrity, as the connections are hidden within the housing rather than exposed externally.
Solution Approach 2:
The patent introduces an intermediary element - the internal chamber housing - that mediates between the terminal contact assembly and key cylinder assembly. The snap features are positioned within this intermediary space, allowing the assemblies to be securely connected while protecting the connection points from external access. The housing acts as a mediator that enables secure connection without exposing the vulnerability points.
2Ease of manufacture
If the snap connections are made accessible from the exterior for assembly purposes, then the ease of manufacture is improved, but the susceptibility to tampering and environmental exposure increases
Solution Approach 1:
The snap connection features are nested within the internal chamber of the housing, with the first snap feature received by the second snap feature in a protected internal space. This nesting eliminates external accessibility of the connections while maintaining the assembly process through internal access during manufacturing, thereby protecting against environmental factors such as moisture, dust, and tampering.
3Reliability
If the snap connections are positioned within an internal chamber, then the tamper-proof mechanism is improved, but the complexity of assembly increases
Solution Approach 1:
The patent applies segmentation by dividing the housing into distinct components (terminal contact housing and key cylinder housing) with defined interfaces. The snap features are segmented into first and second features positioned at specific locations within the internal chamber. This segmentation allows for standardized, repeatable assembly processes despite the internal positioning, as each component has clearly defined engagement points that simplify the overall assembly complexity.
Data Source
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AI summary
Various embodiments are directed to a key switch assembly and method of using the same. In various embodiments, a key switch assembly may comprise a key cylinder assembly comprising a key cylinder housing; a terminal contact assembly comprising a terminal contact housing, the terminal contact assembly being configured for attachment to the key cylinder assembly via an engagement of the terminal contact housing with the key cylinder housing, the being defined by one or more positive snap connection at which a first snap feature of the terminal contact housing is physically engaged with a corresponding second snap feature of the key cylinder housing; wherein the one or more positive snap connection is defined within an internal chamber of the key switch assembly such that the each positive snap connection is physically inaccessible from an exterior of the key switch assembly when the key switch assembly is in an assembled configuration.