Waterproof Click Pad Film Structure for Repeated Pressing Durability
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Solution Overview
Problem
Existing waterproof click pad devices suffer from damage at the junction of the substrate and click pad due to continuous stretching and compression from repeated clicking and pressing, as the uniform thickness waterproof film is easily compromised.
Innovation Solution
A waterproof click pad device design featuring a frame with non-adhesive members that allow for free extension and contraction, reducing the likelihood of breakage by spacing the waterproof unit away from the base unit, and incorporating a plate adhesive member connected to the click pad for resilient deformation without adhering to the base, enhancing flexibility and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a uniform thickness waterproof film is adhered to the click pad and substrate, then waterproof effect is provided, but the waterproof film is easily damaged at the junction due to continuous stretching and compression from repeated clicking and pressing
Solution Approach 1:
The waterproof film is segmented into multiple thickness zones: a first waterproof film portion with first thickness at the junction area, and a second waterproof film portion with second thickness at the click pad area. This segmentation allows the junction area to have greater flexibility and resistance to stretching/compression damage while maintaining waterproof effect.
Solution Approach 2:
Different portions of the waterproof film are given different thicknesses according to their functional requirements. The junction area receives a thicker first waterproof film portion for enhanced durability against mechanical stress, while the click pad area has a thinner second waterproof film portion for optimal click response. This local quality differentiation resolves the contradiction between waterproof reliability and junction strength.
2Reliability
If the waterproof film is adhered to both the click pad and substrate, then waterproof coverage is achieved, but the film cannot freely deform and is prone to breakage at the junction
Solution Approach 1:
The waterproof structure is segmented into multiple adhesive and non-adhesive portions. The first adhesive portion adheres to the substrate, the second adhesive portion adheres to the click pad, and non-adhesive portions are positioned between them. This segmentation allows the central non-adhesive region to freely deform during clicking operations while maintaining overall waterproof coverage through the adhered boundary portions.
Solution Approach 2:
Non-adhesive portions act as intermediary elements between the adhered waterproof film portions. These intermediary non-adhesive sections allow free deformation and movement during click operations, mediating between the fixed adhered boundaries and the dynamic click pad movement, thus preventing breakage while maintaining waterproof coverage.
3Ease of manufacture
If the waterproof film is of uniform thickness, then manufacturing is simplified, but the film lacks flexibility to accommodate repeated clicking and pressing without damage
Solution Approach 1:
The waterproof film structure employs local quality variation with different thicknesses in different regions. The first waterproof film portion at the junction has greater thickness for durability, while the second waterproof film portion at the click pad has lesser thickness for flexibility. This local differentiation extends service life under repeated mechanical stress while remaining manufacturable through conventional multi-layer lamination processes.
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 design prevents breakage of the waterproof unit between the click pad and frame, prolonging the service life by allowing for flexible deformation and maintaining the waterproof effect.
Implementation Method 1
a first non-adhesive member that surrounds the axis, that is connected to an inner periphery of the frame adhesive member and that is spaced apart from and located above the frame, a second non-adhesive member that surrounds the axis, that is connected to an inner periphery of the first non-adhesive member and that is spaced apart from and located above the click pad and the frame
Implementation Method 2
an plate adhesive member that is connected to an inner periphery of the second non-adhesive member and that is adhered to the click pad
Data Source
AI summary
A waterproof click pad device includes a click pad, a frame and a waterproof unit. The frame surrounds the click pad and surrounds an axis passing through the click pad. The waterproof unit is transverse to the axis and is in sheet form. The waterproof unit includes a frame adhesive member surrounding the axis and adhered to the frame, a first non-adhesive member surrounding the axis, connected to an inner periphery of the frame adhesive member and spaced apart from and located above the frame, a second non-adhesive member surrounding the axis, connected to an inner periphery of the first non-adhesive member and spaced apart from and located above the click pad and the frame, and an plate adhesive member connected to an inner periphery of the second non-adhesive member and adhered to the click pad.