Mouse Button Module Torsion Spring Contact Pressure Control
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Solution Overview
Problem
Conventional mouse devices experience partial abrasion of contact points between pressing portions and electronic switches after long use, leading to a vacant path formation and loss of hand feeling functionality.
Innovation Solution
The mouse device incorporates a button module with a touch element, connecting shaft, and torsion spring, where the torsion spring applies a downward pressing force smaller than the trigger pressure, preventing contact abrasion and maintaining functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing portion directly contacts and triggers the electronic switch, then the button functionality is activated, but contact abrasion occurs after long use leading to vacant path formation and loss of hand feeling
Solution Approach 1:
A pressing portion is introduced as an intermediary element between the touch element and the electronic switch. The pressing portion transfers the triggering force from the touch element to the electronic switch, while its resilient nature allows it to absorb wear and maintain contact pressure over time, preventing direct abrasion between the touch element and switch
Solution Approach 2:
The pressing portion is designed with resilient properties that allow it to dynamically adjust its contact pressure. This parameter change capability ensures that even after prolonged use and material wear, the pressing portion maintains sufficient contact force with the electronic switch to ensure reliable triggering while preventing vacant path formation
2Reliability
If a downward pressing force is applied to maintain contact between pressing portion and electronic switch, then contact stability is improved, but excessive force causes trigger activation and functional errors
Solution Approach 1:
The pressing portion's resilient properties enable it to dynamically adjust contact pressure within an optimal range. The force is sufficient to maintain stable contact with the electronic switch preventing vacancies, yet remains below the activation threshold to avoid false triggering, achieving both stability and operational reliability
Solution Approach 2:
The pressing portion transitions from a static contact element to a dynamic resilient component that continuously adapts its contact force. This dynamic adjustment allows the system to maintain optimal contact pressure under varying conditions while preventing both excessive force activation and insufficient contact stability
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 solution ensures the mouse device remains operational and maintains a better hand feeling even after long-term use by preventing vacant path formation between the pressing portion and electronic switch due to partial abrasion.
Implementation Method 1
the at least one second spring foot elastically abuts against the top surface of the touch element and exerts a downward pressing force on the touch element by virtue of the first spring foot and the at least one second spring foot acting bending stresses on the upper shell and the touch element respectively
Implementation Method 2
The torsion spring has a first spring foot elastically abutting against the top of the upper shell, and at least one second spring foot elastically abutting against a top surface of the touch element
Data Source
AI summary
A mouse device includes a lower shell, an upper shell mounted to the lower shell, a circuit board and at least one button module. A receiving space is formed between the upper shell and the lower shell. The circuit board is fastened in the receiving space. A front of a top surface of the circuit board is equipped with at least one electronic switch. The at least one button module includes a touch element, a connecting shaft and a torsion spring. The touch element is pivotally connected to a front end of a top of the upper shell. The torsion spring is pivotally mounted around the connecting shaft. The torsion spring has a first spring foot elastically abutting against the top of the upper shell, and at least one second spring foot elastically abutting against a top surface of the touch element.