Remote Control Keypad Barrier Structure for Waterproof Sealing
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Solution Overview
Problem
Conventional remote controls are prone to malfunction due to water penetration through gaps, leading to durability issues and inconvenience, as existing waterproofing solutions do not effectively cover all areas of the device.
Innovation Solution
A remote control design featuring a waterproof structure applied to each gap, utilizing a rubber keypad with protruding barriers and screws for secure coupling of the upper and lower cases, along with rubber members and double-sided tapes to seal button holes, microphone, buzzer, and battery compartments, ensuring comprehensive waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional remote control structure is used with interlocked upper and lower cases, then the device is simple to manufacture, but water or moisture can penetrate through gaps between cases, buttons and holes, and cover-case interfaces causing malfunction
Solution Approach 1:
The waterproofing function is segmented and applied to specific critical gaps rather than the entire case structure. Rubber Keypad barriers are placed at the interface between upper and lower cases, protruding ribs are positioned at button holes, and rubber members are located at the battery cover gap. This targeted segmentation provides effective waterproofing while avoiding the complexity of a completely sealed structure.
Solution Approach 2:
Rubber barriers, protruding ribs, and rubber members are introduced as intermediary elements between the upper case and lower case to prevent water penetration. These intermediary components fill and seal the gaps at critical interfaces, acting as mediators that block moisture while allowing the cases to remain interlocked and assembled.
2Reliability
If additional waterproofing components are added to seal all gaps, then waterproofing performance is improved, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The waterproofing function is merged with existing structural components rather than adding separate waterproofing assemblies. The rubber keypad serves both as the input interface and as a barrier at the case interface. The protruding ribs are integrated into the upper case structure itself, and the rubber member is incorporated into the battery cover assembly. This merging reduces the number of separate components and simplifies assembly.
3Duration of action of stationary object
If the case structure is modified to include multiple sealing elements, then durability against water penetration is enhanced, but the device becomes more complex and harder to repair
Solution Approach 1:
Different waterproofing solutions are applied to different local areas based on their specific requirements. The rubber keypad with barriers is used at the main case interface where the largest gap exists. The protruding ribs are positioned at button holes where precision sealing is needed. The rubber member is located at the battery cover gap. This localized approach optimizes waterproofing at each critical point while maintaining overall simplicity.
Data Source
AI summary
A remote control with a waterproof function includes a case including an upper case having button holes and a lower case assembled to the upper case at a lower portion of the upper case, a printed circuit board PCB embedded between the both cases, and a rubber keypad embedded in the case so as to be positioned between the upper case and the PCB and having buttons passing through the button holes. Barriers protruding upward or downward along the edges of the rubber keypad are provided, and when the both cases are coupled with the rubber keypad interposed therebetween, the side portions of the lower case and the lower ends of the barriers are in close contact with each other and the inner surface of the upper case and the upper ends of the barriers are in close contact with each other, thereby providing waterproof function.