Keyboard Key Structure Projection Buffering Mechanism
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Solution Overview
Problem
Traditional keyboard key structures result in poor hand feeling when pressing the periphery of the keycap due to direct collisions between the scissor connecting mechanism and the conductive circuit board and bottom plate without a buffer effect.
Innovation Solution
A key structure with a projection arranged between the scissor connecting mechanism and the conductive circuit board, allowing the scissor connecting mechanism to first contact the projection before the conductive circuit board or bottom plate, and deforming to distribute pressure, thereby avoiding hard collisions and enhancing the hand pressing feeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the scissor connecting mechanism directly contacts the conductive circuit board and bottom plate, then the structure is simple, but the hand pressing feeling is poor due to hard collision
Solution Approach 1:
The elastomer is introduced as an intermediary component between the scissor connecting mechanism and the conductive circuit board/bottom plate. When the periphery of the keycap is pressed, the elastomer deforms to provide a buffer effect, preventing direct hard collision between the scissor connecting mechanism and other components, thereby improving hand pressing feeling while maintaining structural simplicity
2Device complexity
If the elastomer is positioned at the middle part of the keycap, then the structure is simple, but the periphery pressing area lacks buffer effect
Solution Approach 1:
The scissor connecting mechanism is designed with different local characteristics: the middle part maintains direct contact for stability, while the periphery incorporates the elastomer for buffer effect. This local differentiation ensures that each area of the keycap has the appropriate mechanical properties for its specific function, providing buffer effect coverage across the entire pressing area
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
The projection-based design buffers the pressing collision, improving the hand pressing feeling by preventing direct contact between the scissor connecting mechanism and other components, resulting in a more comfortable pressing experience.
Implementation Method 1
the elastomer 8 has a buffer effect, neither the contact between the scissor connecting mechanism 2 and the keycap 1, nor the contact between the conductive circuit board 3 and the bottom plate 4 is strong collision
Implementation Method 2
the scissor connecting mechanism positioned on one side of the pressed point is bent and deformed by using the projection as a fulcrum
Data Source
AI summary
A key structure of a keyboard includes a keycap, a scissor connecting mechanism, a conductive circuit board and a bottom plate from top to bottom, wherein a projection is arranged between the scissor connecting mechanism and the conductive circuit board; when an optional position of the periphery of the keycap is pressed, the scissor connecting mechanism is in contact with the projection before the conductive circuit board or the bottom plate below the scissor connecting mechanism; and if the optional position of the periphery of the keycap continues being pressed, the scissor connecting mechanism positioned on one side of the pressed point is bent and deformed by using the projection as a fulcrum and is in contact with the conductive circuit board.