Mouse Click Mechanism With Zero-Threshold Triggering
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Solution Overview
Problem
Current mainstream mouse products require excessive force to activate buttons, exhibit noticeable latency in button response, and suffer from wear-prone components that degrade tactile feedback and shorten lifespan.
Innovation Solution
A mouse design featuring a trigger switch positioned at an acute angle to the mouse body, a key mechanism with a force-receiving section and transmission section coupled via an elastic element, and a lightweight, high-strength material with a multi-layered limiting system to suppress unintended movement, ensuring precise and durable clicking actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional button structures are used, then the mouse can be manufactured with simple components, but excessive force is required to activate buttons causing hand fatigue
Solution Approach 1:
The patent implements a dynamic key mechanism where the key body can rotate around a rotating shaft, transitioning from a static pressed state to a dynamic rotation state. This dynamic movement allows the key to return to its initial position automatically after pressing, reducing the force required for activation and eliminating hand fatigue associated with traditional static buttons that require constant pressure maintenance.
Solution Approach 2:
The key mechanism is segmented into distinct functional components: the key body, rotating shaft, elastic element, and limiting mechanism. This segmentation allows each component to perform its specific function efficiently - the elastic element provides restoring force, the rotating shaft enables motion, and the limiting mechanism controls rotation range - collectively reducing the overall activation force needed while maintaining operational ease.
2Speed
If traditional key mechanisms are used, then the structure can be simple, but noticeable latency in button response occurs
Solution Approach 1:
The dynamic rotation mechanism enables the key to respond immediately to pressing input by rotating around the shaft, eliminating the latency associated with traditional linear compression mechanisms. The elastic element provides instantaneous restoring force that quickly returns the key to its initial position, ensuring rapid response speed and minimal time loss between input and system response.
Solution Approach 2:
The elastic element is pre-loaded and positioned to immediately engage when the key is pressed, providing instant restoring force without delay. This preliminary preparation of the elastic mechanism ensures that the key returns to its initial position as quickly as possible, reducing response latency and improving overall button response speed.
3Reliability
If traditional key components are used, then manufacturing can be straightforward, but components wear easily and deform leading to degraded tactile feedback
Solution Approach 1:
The rotating key mechanism dynamically engages and disengages from the trigger switch, preventing continuous friction and wear that occurs in traditional pressed-button designs. The limiting mechanism with guide protrusions and guide slots controls the rotation range, preventing excessive movement that could cause deformation or misalignment, thereby enhancing component durability and wear resistance while maintaining reliable tactile feedback.
Solution Approach 2:
The elastic element acts as a cushioning mechanism that absorbs and distributes the pressing force, preventing direct impact and stress concentration on the trigger switch and other components. This prior cushioning effect reduces wear and deformation over time, enhancing the reliability and durability of the key mechanism while maintaining consistent tactile feedback characteristics.
4Force
If the trigger switch is positioned at an acute angle, then the force transmission is optimized, but the manufacturing precision requirements increase
Solution Approach 1:
The elastic element provides a cushioning effect that compensates for minor variations in trigger switch positioning caused by manufacturing tolerances. By absorbing and distributing forces, the elastic mechanism ensures reliable force transmission even when the trigger switch is not positioned with absolute precision, thereby maintaining force transmission efficiency while reducing the stringency of manufacturing precision requirements.
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 achieves 'zero-threshold' triggering with reduced pressing force, enhanced response speed, and improved tactile crispness, while maintaining structural integrity and durability through optimized force transmission and material selection.
Implementation Method 1
The transmission section is connected to an elastic element configured to apply a biasing force to the transmission section, causing the force-receiving section to have a tendency to move toward the trigger switch during both the stationary state and pressing process of the key mechanism
Data Source
AI summary
The present disclosure provides a mouse. By positioning an elastic element at the distal end of the transmission section and applying a sustained upward biasing force, the force-receiving section maintains a tendency to move toward the trigger switch during both static and pressing states, achieving "zero-threshold" triggering. This significantly reduces pressing pressure and operational fatigue. The trigger switch is set at an acute angle to the base wall, ensuring the trigger arm’s movement direction remains perpendicular to the trigger key’s mating surface. The key mechanism employs a lightweight yet high-strength material, complemented by weight-reducing holes and reinforcing ribs on the transmission section, achieving an overall lightweight design while maintaining the rigidity and deformation resistance of critical components. A multi-layered limiting system—comprising bearing housings, baffles, guide protrusions, positioning shafts, and limit plates—effectively suppresses unintended movement and wobbling of the key mechanism in all directions, ensuring precise, stable, and durable clicking actions.