Button Assembly Link Member Noise Reduction
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Solution Overview
Problem
Keyboard button assemblies produce noise due to collisions and friction between the link member and the bottom plate, which is not adequately addressed by existing designs.
Innovation Solution
The button assembly incorporates an interference member between the cap's inner surface and the link member, which provides a compact contact to prevent rotation and reduce resonance, thereby minimizing noise when the button is punched.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a link member is disposed in the button assembly to increase structural strength, then the cap can move up and down relative to the bottom plate, but the link member collides with the bottom plate and produces noise
Solution Approach 1:
The patent introduces an interference member as an intermediary element between the link member and the cap's inner surface. This interference member creates a compact contact that prevents the link member from rotating and colliding with the bottom plate, thereby eliminating the noise source while preserving the structural strength function of the link member
2Ease of operation
If the link member is allowed to move freely for button operation, then the button assembly is flexible to use, but friction between the link member and bottom plate produces noise
Solution Approach 1:
The interference member serves as a mediator that constrains the link member's movement. By creating a compact contact interface between the link member and cap's inner surface, it prevents the link member from contacting the bottom plate during operation, thus eliminating friction-generated noise while maintaining operational flexibility
Solution Approach 2:
The invention extracts the noise-generating contact interface between the link member and bottom plate by introducing the interference member. This separates the functional movement of the button from the harmful collision and friction points, allowing the link member to move freely for operation without producing noise
Data Source
AI summary
A button assembly includes a bottom plate, a cap, an elastic member, a link member, and an interference member. The cap is disposed on the bottom plate, and the cap has a button surface and an inner surface relative to each other. The elastic member is disposed under the cap. The link member has two parallel portions parallel to each other and a horizontal portion connected with the two parallel portions, wherein the two parallel portions are disposed to the bottom plate and the horizontal portion is disposed to the inner surface. The interference member is disposed between the inner surface and the link member.