Suspended Switch Module for Consistent Mouse Trigger Feel
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Solution Overview
Problem
Conventional mouse devices experience inconsistent operating feelings due to production tolerances affecting the distance between the key trigger and micro-switch trigger point, leading to suboptimal user experience.
Innovation Solution
The mouse device features a switch module suspended from the inner side of the upper shell, allowing for adjustment of the distance between the key module and switch module, minimizing tolerance impacts and enabling consistent operating feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board is disposed onto the pillar of the lower shell with micro-switch welded onto the circuit board, then the assembly is structurally stable, but the distance between the key trigger and micro-switch trigger point becomes inconsistent due to various tolerances (assembly tolerances, dimensional tolerances of the lower shell, welding tolerances of the micro-switch, and thickness tolerances of the circuit board)
Solution Approach 1:
The switch module is separated from the lower shell and circuit board assembly, and instead suspended from the upper shell. This segmentation isolates the micro-switch positioning from the tolerances of the lower shell and circuit board, allowing the trigger distance to be determined primarily by the upper shell's positioning features, thereby improving consistency.
Solution Approach 2:
The switch module is extracted from the traditional lower-shell-mounted configuration and repositioned to be suspended from the upper shell. This extraction removes the cumulative effect of multiple tolerance sources (lower shell dimensions, circuit board thickness, welding variations) from the critical trigger distance measurement.
2Adaptability or versatility
If the switch module is fixed onto the lower shell with the circuit board, then the structure is rigid and stable, but the distance between the key module and switch module cannot be easily adjusted
Solution Approach 1:
The switch module is designed with a suspended mounting structure that allows for adjustment of the distance between the key module and switch module. This dynamic configuration enables the trigger distance to be modified according to user preferences or different applications, enhancing adaptability.
Solution Approach 2:
The upper shell serves as an intermediary mounting structure for the switch module, replacing the direct attachment to the lower shell. This intermediary positioning system provides a reference frame that is easier to adjust and less affected by lower shell tolerances, while simplifying the overall mounting complexity.
Data Source
AI summary
A mouse device includes a mouse shell, a switch module, and a key module. The mouse shell has an upper shell and a lower shell, and the upper shell and the lower shell are joined together to form a chamber. The switch module is disposed within the chamber and is suspended from an inner side of the upper shell. The key module is disposed on an outer side of the upper shell. The key module is vertically movable and has a trigger. The trigger enters the chamber through the upper shell to activate the switch module when the key module is clicked.