Folded Key Stabilizer for Keyboard Tactile Feedback
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Solution Overview
Problem
Conventional keyboards face challenges in providing consistent key travel and tactile feedback due to the complexity and cost associated with numerous small moving parts, which can lead to increased manufacturing complexity and potential failure points.
Innovation Solution
The implementation of a foldable and bistable key stabilizer comprising rigid triangular panels connected by elastic hinges, allowing for parallel motion of keycaps while reducing the number of parts and complexity, and utilizing a collapsible dome for enhanced tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional key mechanisms with multiple small moving parts are used, then key travel and tactile feedback can be provided, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent merges multiple separate components (stabilizer bars, hinges, and keycap supports) into a single integrated foldable stabilizer assembly. This consolidation maintains the functional complexity needed for key travel and tactile feedback while reducing the number of discrete parts that require manufacturing and assembly, directly addressing the contradiction between operational quality and device complexity
Solution Approach 2:
The stabilizer employs a dynamic foldable structure with hinges that allow the stabilizer to transition between extended and retracted positions. This dynamic mechanism provides the necessary key travel and tactile feedback through controlled movement, while the folding capability reduces the space and complexity requirements compared to a fully extended rigid structure
2Ease of operation
If conventional key mechanisms with multiple small moving parts are used, then key travel and tactile feedback can be provided, but manufacturing cost increases
Solution Approach 1:
By combining multiple functional elements into a single foldable stabilizer component, the patent reduces the total part count and associated manufacturing costs. The integrated design eliminates the need to manufacture, inventory, and assemble multiple separate small parts, directly addressing the cost issue while preserving key travel and tactile feedback functionality
Solution Approach 2:
The foldable stabilizer serves multiple functions simultaneously: it provides key travel through its folding motion, delivers tactile feedback through the hinge mechanism, and maintains keycap stability. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing overall manufacturing cost
3Ease of operation
If conventional key mechanisms with multiple small moving parts are used, then key travel and tactile feedback can be provided, but the number of potential failure points increases
Solution Approach 1:
The integration of multiple components into a single foldable stabilizer assembly reduces the total number of interfaces and connection points between parts. Fewer interfaces mean fewer potential failure points from wear, misalignment, or loosening, while the foldable mechanism itself is designed to provide reliable key travel and tactile feedback
4Ease of manufacture
If a foldable stabilizer is used, then manufacturing cost and complexity are reduced, but the mechanism complexity increases
Solution Approach 1:
The foldable stabilizer uses simple hinge joints that allow controlled folding motion. This dynamic design achieves the desired key travel and stability with a relatively simple mechanism compared to traditional multi-component systems, balancing the trade-off between manufacturing simplicity and operational complexity
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
This solution reduces manufacturing costs, minimizes failure modes, and provides consistent key travel and tactile feedback by stabilizing keycaps through a foldable and bistable mechanism, maintaining horizontal orientation during key presses.
Implementation Method 1
The hinge portions can be elastically expandable, wherein a distance between edges of the rigid panels can be variable upon elastic expansion of the hinge portions
Implementation Method 2
The key mechanism can further comprise a collapsible dome positioned between the stabilizer and the base layer
Implementation Method 3
a first structure positioned on the stabilizer and a second structure positioned on the keycap, with the first structure being magnetically attracted to the second structure and biasing the stabilizer toward the keycap
Data Source
AI summary
Key assemblies having a foldable stabilizer are disclosed. The stabilizer can be positioned under a keycap to help guide the keycap and limit rotation or movement when the key is pressed. The stabilizer can have a pointed-star shape with multiple folding axes and can have multiple points of connection or linkage to the keycap or other surrounding components. The stabilizer can unfold or flatten as the keycap is pressed and can fold as the keycap is raised.