Loudspeaker Elastic Pad Keyhole Waterproofing
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Solution Overview
Problem
Existing earphones lack waterproof functionality, making them unsuitable for use in wet environments such as swimming or rainy conditions, while also compromising sound quality.
Innovation Solution
A loudspeaker apparatus designed with a waterproof function, featuring a core housing for the earphone core, a circuit housing for the control circuit, an ear hook connecting the housings, a key mechanism with an elastic pad for waterproof sealing, and a housing sheath for additional protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If earphones are designed without waterproof structure, then the structure remains simple and easy to manufacture, but the earphones cannot be used in wet environments such as swimming or rainy conditions
Solution Approach 1:
The earphone is divided into separate components: a waterproof housing containing the earphone core, a separate control circuit board, and modular key mechanisms. This segmentation allows each component to be optimized for waterproofing while maintaining manufacturing simplicity through standardized assembly processes.
Solution Approach 2:
An elastic pad serves as an intermediary sealing element between the key mechanism and the housing. This elastic intermediary provides effective waterproof sealing without requiring complex gasket systems, resolving the contradiction between waterproof capability and structural simplicity.
2Object-affected harmful factors
If waterproof structures are added to earphones, then waterproofing function is achieved, but the sound quality and resonance characteristics are compromised
Solution Approach 1:
Waterproofing measures are applied locally only where needed - at the housing openings and key mechanism interfaces - rather than enclosing the entire earphone structure. This localized approach provides effective water protection while leaving the acoustic chambers and resonance paths open and unobstructed, preserving sound quality.
Solution Approach 2:
Thin elastic pads are used as waterproof membranes at key interfaces. These thin flexible films provide effective water sealing while being acoustically transparent, allowing sound waves to pass through without significant interference with resonance characteristics.
3Ease of operation
If keys are added to the circuit housing for control functions, then user control capability is improved, but the risk of water entering through keyholes increases
Solution Approach 1:
Elastic pads are pre-installed at the key mechanism interfaces before final assembly. These pads act as preventive cushioning elements that block water infiltration paths created by the keyholes, allowing full control functionality while eliminating water infiltration risk.
Solution Approach 2:
The elastic pad serves as an intermediary element between the external environment and the internal circuit housing. It allows the key mechanism to maintain full operational functionality while mediating the water infiltration risk by providing a flexible waterproof barrier at the keyhole interface.
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 apparatus achieves effective waterproofing while maintaining sound quality, allowing users to control earphones in wet conditions without compromising performance.
Implementation Method 1
an elastic pad arranged between the key and the keyhole, and the elastic pad blocks a movement of the key toward the keyhole
Data Source
AI summary
The present disclosure discloses a loudspeaker apparatus. The loudspeaker apparatus comprises a core housing for accommodating the earphone core; a circuit housing for accommodating a control circuit that drives the earphone core to vibrate to generate a sound, wherein the sound includes at least two resonance peaks; an ear hook for connecting the core housing and the circuit housing; a key arranged at a keyhole on the circuit housing, wherein the key moves relative to the keyhole to generate a control signal for the control circuit; and an elastic pad arranged between the key and the keyhole, wherein the elastic pad hinders a movement of the key towards the keyhole. In the present disclosure, by providing an elastic pad between the key and the keyhole, the waterproof effect of the loudspeaker apparatus may be improved, and the space occupied by the key may be reduced.