Keyswitch Semi-Shaft Support Assembly Stability
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Solution Overview
Problem
Existing mechanical keyswitch structures face challenges in assembly stability and production efficiency due to the need for precise alignment and potential structural weakness in reduced size designs, particularly with scissors and toothed support configurations, which can lead to instability and deformation.
Innovation Solution
A keyswitch structure utilizing a semi-shaft semi-hole engagement mechanism for support connection, allowing for easier assembly and maintaining pivotal connection strength and stability, with each support featuring a shaft portion and recess for enhanced rotation stability and automatic alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a complete hole-shaft structure is used to pivotally connect the two supports, then the relative rotation stability is improved, but the assembly difficulty increases and production capacity is reduced
Solution Approach 1:
The patent divides the complete hole-shaft structure into two separate parts: a hole formed in one support and a shaft formed in the other support. These segmented parts are then connected through a pivot connection that allows relative rotation. This segmentation enables the supports to be manufactured and assembled independently, reducing assembly difficulty while maintaining rotation stability through the pivot connection mechanism.
2Volume of moving object
If the keyswitch structure is reduced in size, then the compactness is improved, but the structural strength of the hole-shaft connection is reduced
Solution Approach 1:
The patent enhances the local quality of the pivot connection by adding a pivot connection portion with specific structural features such as a pivot connection surface and positioning structures. This localized reinforcement at the connection point maintains pivotal connection strength even when the overall keyswitch size is reduced, allowing compact design without sacrificing connection integrity.
3Reliability
If a complete hole-shaft structure is used, then the connection stability is improved, but the risk of permanent deformation or damage during assembly increases
Solution Approach 1:
The patent introduces a pivot connection that allows dynamic relative rotation between the two supports. This dynamic connection mechanism enables the supports to adjust and align during assembly, reducing the risk of permanent deformation or damage from misalignment or excessive force, while maintaining stable engagement through the pivot connection's rotational capability.
Data Source
AI summary
A keyswitch structure includes a keycap, a base, and two supports pivotally connected to each other relative to a rotation axis and connected to and between the keycap and the base. One of the supports includes a first shaft recess, a first shaft portion, and a division slot formed therebetween; the other support includes a second shaft recess, a second shaft portion, and a division wall therebetween. The two supports are pivotally connected relative to the rotation axis by the first shaft portion and the second shaft portion rotatably disposed in the first shaft recess and the second shaft recess respectively. Therein, the division wall is inserted into the division slot. The keycap can move up and down relative to the base through the two supports.