Keyboard Switch Balancing Lever Mechanism for Tilt Control
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Solution Overview
Problem
Traditional keyboard switches face issues with button tilting and sticking, leading to inconvenient and unstable operation, along with unsatisfactory tactile feedback due to small contact surfaces and high friction, complicating the pressing mechanism.
Innovation Solution
A new keyboard switch design featuring a base, static and moving contacts, a button, and reset spring, with balancing levers and rotating/guiding grooves to prevent tilting and sticking, ensuring smooth operation and easy installation by distributing pressing force and reducing friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the button has a small contacting surface with the base, then the structure is simple, but the button is liable to tilt or be stuck during pressing
Solution Approach 1:
The patent introduces guiding tubes as intermediary components between the button and base. These guiding tubes provide a constrained path for button movement, preventing tilting and sticking while maintaining structural simplicity. The guiding tubes act as mediators that guide the button's vertical motion without requiring complex mechanical structures.
2Ease of operation
If the guiding tube and keyboard post have a relatively large contacting surface, then the button can move axially smoothly, but high friction exists between the button and guiding tube making operation laborious
Solution Approach 1:
The patent segments the guiding structure into multiple guiding tubes positioned at different locations around the button. This segmentation allows the button to move smoothly through constrained paths while distributing the contact points, thereby reducing overall friction and making operation less laborious compared to a single large-contact surface design.
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 design prevents button tilting and sticking, providing a smooth and labor-saving operation with improved tactile feedback, thanks to the balanced lever system and reduced contact area, ensuring convenient and efficient use.
Implementation Method 1
a reset spring for restoring the button to its original position
Implementation Method 2
both ends of the balancing levers are capable of being embedded in corresponding guiding grooves rotatably and moving forwards and backwards along the guiding grooves
Data Source
AI summary
A keyboard switch includes a base, a static contact, a movable contact, an upper cover, a button and a reset spring; the upper cover is buckled to the base; one end of the button is install on the base and the other end passes through the upper cover; the upper and lower ends of the reset spring respectively abut against the button and the base; at least two balance bars for preventing the button from tilting; at least four rotating grooves and guiding grooves for installing the balancing levers are further included; the body of the balance levers are rotatablely rotatably embedded in the rotation grooves, and both ends of the balancing lever are rotatablely rotatably embedded in the corresponding guiding grooves and move back and forth along the guiding grooves.