Elastic Waterproof Layer for Keyboard Sealing
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Solution Overview
Problem
Conventional waterproof films for keyboards are not entirely effective as they can be deformed when keys are pressed, leading to water seepage and compromised hand feel due to material limitations, and do not adequately protect key labels over time.
Innovation Solution
A waterproof keyboard structure featuring an elastic waterproof layer formed through double injection or insert molding on the keyboard frame, with a sealing ring that encircles the frame and fits closely with the keyboard module, providing a waterproof ring and maintaining key functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof film is adhered on the surfaces of the keys, then waterproof and dustproof effects are achieved, but the waterproof film deforms when keys are pressed and hand feel is degraded
Solution Approach 1:
The waterproof structure is divided into multiple independent components: a rigid keyboard frame that maintains structural integrity, a separate elastic waterproof layer that provides sealing, and a removable protective film that covers key surfaces. This segmentation allows each component to perform its specific function without interfering with others - the rigid frame provides stability, the elastic layer adapts to key presses, and the protective film can be removed to restore hand feel when needed.
Solution Approach 2:
The patent employs materials with different elasticity parameters - the keyboard frame uses rigid material for structural support, while the waterproof layer uses elastic material that can deform with key presses. The protective film has intermediate properties, providing water resistance while allowing some flexibility. This parameter differentiation resolves the contradiction between waterproof reliability and operational comfort.
2Reliability
If the waterproof film is adhered on the surfaces of the keys, then waterproof effect is improved, but water seepage can still occur and labels on key caps are worn
Solution Approach 1:
The patent uses a multi-layer film structure where the protective film covers the key surfaces and labels, providing both waterproof protection and label preservation. The elastic waterproof layer forms a flexible seal around the keyboard periphery, adapting to the contours of the keyboard frame while maintaining water resistance. This flexible film approach provides comprehensive protection without rigid constraints.
Solution Approach 2:
The protective film is pre-applied to cover the key surfaces and labels before the keyboard is used, preventing label wear and providing initial waterproof protection. The elastic waterproof layer is pre-formed to fit the keyboard frame contours, creating immediate sealing capability. This preliminary protection allows the keyboard to resist water and dust from the outset.
3Object-affected harmful factors
If a conventional waterproof film is used, then dustproof effect is achieved, but the film can be removed at all times and waterproof protection is compromised
Solution Approach 1:
The patent merges multiple protective functions into an integrated structure: the protective film is combined with the elastic waterproof layer and the rigid keyboard frame to create a unified waterproof-dustproof system. The protective film adheres to the key surfaces while the elastic layer seals the periphery, and both are supported by the rigid frame structure. This merged system provides continuous protection that cannot be easily removed or compromised.
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 effectively prevents water and dust ingress while maintaining a good hand feel for key presses and protecting key labels, enhancing the overall durability and usability of the keyboard.
Implementation Method 1
an elastic waterproof layer is formed by means of double injection or insert molding on the keyboard frame
Data Source
AI summary
A waterproof keyboard structure and an assembly method thereof are provided. The waterproof keyboard structure includes a keyboard module, and a keyboard frame framing on the keyboard module, wherein an elastic waterproof layer is formed by means of double injection or insert molding on the keyboard frame. The keyboard module is defined with a key surface, and an assembly surface arranged opposite to the key surface. The elastic waterproof layer is clad on the key surface, and the keyboard module with the assembly surface facing a seat is assembled together with the keyboard frame in an accommodating space, thereby having the elastic waterproof layer closely fit with the seat to form a waterproof ring.