Waterproof Key Module Using Pre-Tensioned Adhesive Film
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional touch control key modules in electronic devices suffer from poor water resistance and dustproof properties due to gaps between the key structure and housing, limiting their application in environments with high standards, and they protrude, affecting the device's appearance.
Innovation Solution
A waterproof key module design featuring a housing with a hollow chamber, a touch component supported by a pre-tensioned waterproof adhesive film, and a pressure sensor module between the touch component and the housing, which isolates the touch component from the bottom housing portion, ensuring water resistance and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional key structure is used with gaps between the key and housing, then the key can be operated easily, but water resistance and dustproof properties deteriorate
Solution Approach 1:
The patent employs a waterproof adhesive film as a flexible barrier between the touch component and bottom housing portion. This thin film maintains the waterproof seal while allowing the touch component to be pressed and return to its original position, thus preserving ease of operation while achieving water resistance.
Solution Approach 2:
The waterproof adhesive film acts as an intermediary element between the touch component and the bottom housing portion. It mediates the interaction by providing a waterproof barrier while still allowing mechanical interaction (pressing) to occur, thus resolving the contradiction between operational ease and water resistance.
2Ease of operation
If the key structure protrudes from the housing, then the key is easier to operate, but the appearance of the integral machine deteriorates
Solution Approach 1:
The flexible waterproof adhesive film enables the touch component to have a flush or recessed configuration with the housing while maintaining operability. The film's flexibility allows pressing action even when the key does not protrude, thus improving appearance while preserving ease of operation.
3Reliability
If the touch component is isolated from the bottom housing portion using a waterproof adhesive film, then water resistance is improved, but the structural complexity increases
Solution Approach 1:
The waterproof adhesive film provides a simple yet effective isolation solution between the touch component and bottom housing portion. This single-layer flexible film achieves water resistance without requiring complex multi-component sealing structures, thus improving water resistance while minimizing 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
The solution provides a waterproof and reliable key module that maintains performance even with existing gaps, enhancing water resistance and allowing convenient mounting, suitable for applications requiring high environmental standards.
Implementation Method 1
the waterproof adhesive film in a pre-tensioned status and isolating the touch component from the bottom housing portion, and the touch component being supported on the waterproof adhesive film
Implementation Method 2
At least one pressure sensor module is provided between the touch component and the bottom housing portion and configured to generate a pressure signal that represents a pressure degree according to a pressing on the touch component
Data Source
AI summary
Disclosed is a waterproof key module, including: a housing with a hollow inner chamber and an opening at an end, comprising a front housing portion and a bottom housing portion secured to each other, and the opening being provided on the front housing portion; a touch component limited in the inner chamber, comprising a touch plate extending out from the opening; and a waterproof adhesive film in a pre-tensioned status and isolating the touch component from the bottom housing portion, an edge of the film being secured to a position where the front housing portion is connected to the bottom housing portion, and the touch component being supported on the film; wherein at least one pressure sensor module is provided between the touch component and the bottom housing portion and configured to generate a pressure signal that represents a pressure degree according to a pressing on the touch component.