Pivotal Mouse Button with Biasing Member for Stable Actuation
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Solution Overview
Problem
Conventional mouse devices with cantilever button designs suffer from unstable force and feel due to manufacturing and assembly tolerances, leading to issues like idle stroke and overpressure, and require excessive force for button activation, limiting light press functionality.
Innovation Solution
A mouse device design featuring a housing, switch, button, and biasing member, where the button is pivotally connected and includes a pivotal portion and trigger portion, with a biasing member applying a forward force to maintain contact with the switch, eliminating the need to overcome elastic forces and ensuring consistent activation without idle stroke or overpressure, even when the device is shaken or tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cantilever button design is used, then the button can restore to its original position by elasticity, but manufacturing and assembly tolerances cause idle stroke and overpressure issues, making the force and feel unstable
Solution Approach 1:
The patent replaces the traditional cantilever elastic button mechanism with a pivotally connected button structure. Instead of relying on elastic deformation and recovery, the button now uses gravitational force to maintain contact with the switch. This mechanical substitution eliminates the sensitivity to manufacturing and assembly tolerances that plagued the elastic design, providing stable and predictable button operation.
Solution Approach 2:
The patent changes the fundamental operating parameter of the button from elastic force to gravitational force. By using the button's own weight to maintain contact pressure on the switch, the system becomes insensitive to dimensional variations in manufacturing and assembly. This parameter change transforms an unstable elastic system into a stable gravitational system.
2Ease of operation
If a cantilever button design is used, then the button can be made of elastic plastic, but the applied force must be greater than the sum of switch trigger force and elastic deformation force, limiting light press feeling
Solution Approach 1:
The patent replaces the elastic mechanical system with a gravitational mechanical system. Instead of requiring users to overcome elastic restoring forces, the button design now relies on gravity to maintain contact. This substitution dramatically reduces the force required for button activation, enabling a light press feeling that was previously unachievable with elastic materials.
3Reliability
If a pivotally connected button design is used, then the button can maintain contact with the switch by gravity, but additional components like biasing members are needed to ensure consistent contact under shaking or tilting conditions
Solution Approach 1:
The patent introduces a biasing member as an intermediary component between the pivotally connected button and the housing. This biasing member applies a forward force to ensure the button maintains consistent contact with the switch even when the device is shaken or tilted. While this adds a component, it significantly enhances reliability in dynamic conditions where simple gravitational contact would be insufficient.
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 maintains consistent button contact with the switch, eliminating idle stroke and overpressure issues while allowing for a light press feeling, ensuring reliable operation under varying conditions.
Implementation Method 1
the button can restore to its original position by the utilizing the elasticity thereof
Data Source
AI summary
A mouse device includes a housing, a switch, a button, and a biasing member. The housing has an accommodating space therein. The switch is disposed in the accommodating space. The button covers the housing and includes a pivotal portion and a trigger portion. The pivotal portion is pivotally connected to the housing. The trigger portion extends into the accommodating space. The biasing member is located between the pivotal portion and the trigger portion and forwardly exerts force to the button in a forward-backward axial direction of the mouse device.