Waterproof Computer Mouse Sealing Structure
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Solution Overview
Problem
Conventional computer mice are prone to water damage due to liquid entering through gaps around the roller and assembly areas, and existing waterproof designs either increase costs or require users to change their operating habits, with insufficient protection around the pushing portions.
Innovation Solution
A waterproof computer mouse design featuring an upper and lower housing with extended tubular portions, first and second waterproof rings, and a circuit board with micro switches, creating a sealed structure around the roller and pushing portions to prevent liquid ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mouse housing with slits and assembly gaps is used, then manufacturing is simple and cost is low, but liquid enters the interior causing damage to electronic components
Solution Approach 1:
The waterproof structure is divided into multiple segments: a first waterproof ring at the housing interface, a second waterproof ring at the roller compartment interface, and covering pads at the pushing portion interfaces. This segmentation allows each waterproof component to address specific vulnerability points independently, achieving comprehensive protection without requiring a completely redesigned complex structure.
Solution Approach 2:
Waterproof rings and covering pads are introduced as intermediary elements between the housing components and the external environment. These intermediaries create sealed barriers that prevent liquid ingress while maintaining the original functional structure of the mouse, thus improving reliability without significantly increasing overall device complexity.
2Reliability
If a protruded post structure is used for the pushing portion, then the structure is simple, but it cannot completely block liquid outside the housing
Solution Approach 1:
Covering pads made of flexible waterproof material are used to cover the pushing portions and seal the interfaces between the top member and housing. These flexible seals conform to the pushing portion geometry and create effective liquid barriers, improving waterproof performance while maintaining structural simplicity through the use of thin film-like waterproof elements.
3Reliability
If a capacitive touch panel is used instead of roller, then waterproofing is improved, but total cost increases and users need to change operating habits
Solution Approach 1:
Waterproof rings and covering pads are pre-installed at all potential liquid ingress points (housing interface, roller compartment, pushing portions) before assembly is completed. This preliminary waterproofing action ensures that the original roller-based operating interface remains protected, allowing users to continue using familiar operations without changing habits, while achieving improved waterproof performance.
Data Source
AI summary
A waterproof computer mouse includes an upper housing, a lower housing, a first waterproof ring, a second waterproof ring, a roller and a circuit board. The upper housing has an upper tubular portion downwardly extended therefrom in a through manner. The lower housing has a lower tubular portion upwardly extended therefrom through a bottom surface thereof. The upper tubular portion connects with the lower tubular portion to form a roller compartment therein. The first waterproof ring is disposed between a bottom edge of the upper housing and a top edge of the lower housing. The second waterproof ring is disposed between a bottom edge of the upper tubular portion and a top edge of the lower tubular portion. The roller is disposed in a rotatable manner in the roller compartment formed by the upper tubular portion and the lower tubular portion. The circuit board is disposed on the lower housing.