Mouse Key-Panel Spring Structure for Clearance-Free Clicking
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Solution Overview
Problem
Improper clearances and noise generation due to manufacturing tolerances in mouse devices, leading to a fuzzy feedback strength and feel during quick continuous clicks.
Innovation Solution
A mouse device design featuring a shell with key panels equipped with cylinders, springs with arc bending sections, and a frame structure that eliminates clearance by springily pressing against stop faces to ensure proper pressing force, incorporating easy assembly and adjustable elastic force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manufacturing tolerance is considered in key panel assembly, then ease of manufacture is improved, but improper clearance is generated between key panel and switch button
Solution Approach 1:
The spring is pre-installed on the circuit board in advance, creating a preliminary assembly structure that automatically compensates for clearance issues. This preliminary action eliminates the need for precise post-assembly adjustments, resolving the contradiction between ease of manufacture and clearance accuracy.
Solution Approach 2:
The spring's elastic force parameter is utilized to dynamically adjust and eliminate improper clearance between the key panel and switch button. By changing the force parameter through spring compression, the system compensates for manufacturing tolerances, achieving precise contact without requiring extremely tight manufacturing tolerances.
2Ease of manufacture
If key panel is not accurately pressed onto switch button, then manufacturing tolerance is accommodated, but feedback strength becomes fuzzy during quick continuous click
Solution Approach 1:
The spring is pre-positioned on the circuit board to establish a predetermined force relationship with the switch button. This preliminary arrangement ensures that whenever the key panel presses the button, the spring provides consistent elastic force, guaranteeing reliable feedback strength during quick continuous clicks while still accommodating manufacturing tolerances.
Solution Approach 2:
The spring introduces a dynamic elastic force mechanism that adapts to varying press conditions. During quick continuous clicks, the spring's elastic recovery provides consistent force feedback, ensuring reliable operation even when manufacturing tolerances cause slight variations in key panel positioning or press depth.
3Manufacturing precision
If spring is added to eliminate clearance, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The spring is pre-installed on the circuit board as part of the initial assembly process, integrating the clearance elimination function into an existing component rather than adding a separate adjustment mechanism. This preliminary integration minimizes additional complexity while achieving precise clearance control.
Solution Approach 2:
The spring automatically performs the clearance elimination function through its elastic properties, requiring no external control or complex adjustment mechanisms. The spring self-adjusts to eliminate improper clearance between components, providing precision without increasing operational or structural 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
Eliminates improper clearance and noise, provides a proper pressing elastic force, and offers benefits of easy assembly, low cost, and damage prevention to springs, with adjustable elastic force and deformation protection.
Implementation Method 1
a plurality of springs, each of the springs being respectively fixed to two corresponding points of the frame, corresponding to the position of each of the cylinders, and springily pressed against the stop face of each of the cylinders; each of the cylinders is pulled down in the direction of each of the switches via springy pressing of each of the springs against each of the stop faces to eliminate the improper clearance
Data Source
AI summary
The present application provides a mouse device, comprising: a shell, a frame, a plurality of springs and a circuit board. The shell has a plurality of key panels which are equipped with cylinders, each of which has ends provided with a pressing face and a stop face opposite to each other; the circuit board is fixed in the shell and equipped with a plurality of switches; the frame is fixed in the shell; each of the springs is respectively fixed to two corresponding points of the frame, corresponding to the position of each of the cylinders, and each spring is springily pressed against the stop face; each of the cylinders is pulled down in the direction of each of the switches via springy pressing of each of the springs against each of the stop faces.