Headphone Transducer Assembly With Waterproof Button Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transducer assemblies in headphones are prone to accidental triggering of switches due to water pressure when used in wet environments, affecting their functionality and user experience.
Innovation Solution
A transducer assembly with a deformable waterproof member integrally formed with the transducer box through two-color injection molding, featuring a stepped configuration and multiple connection points to enhance waterproofing and prevent accidental switch triggering while allowing sensitive button operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof member is disposed between the transducer box and button to prevent liquid entry, then waterproofing performance is improved, but the button becomes less sensitive to user pressing operations
Solution Approach 1:
The waterproof member is designed as a deformable flexible component that can be pressed by the button to transmit the pressing force to the switch, while maintaining waterproof sealing. The flexibility allows it to deform under button pressure for sensitive operation, yet remain waterproof when not pressed.
Solution Approach 2:
The waterproof member is designed with specific physical parameters including a thickness of 0.5-2mm and hardness of 20-80 Shore A, creating a deformable structure that balances waterproofing and button sensitivity. These parameter changes allow the member to deform under pressure while maintaining sealing.
2Ease of operation
If the waterproof member is made deformable to enable button triggering, then button operation is improved, but the member becomes susceptible to accidental triggering by water pressure
Solution Approach 1:
The waterproof member features a stepped configuration with different thickness regions: a first thickness in the button pressing area for sensitivity, and a second thickness in the peripheral sealing area for stability. This local quality differentiation allows the button area to be sensitive while the peripheral area resists water pressure.
Solution Approach 2:
The waterproof member is divided into functional segments including a button pressing area and a peripheral sealing area with different thicknesses. This segmentation allows each region to have optimized properties for its specific function while working together as a unified waterproof structure.
3Ease of manufacture
If a traditional waterproof member design is used, then manufacturing is simpler, but the assembly requires separate components increasing device complexity
Solution Approach 1:
The waterproof member is integrally formed with the transducer box through two-color injection molding, merging what would traditionally be separate components into a single integrated part. This reduces assembly complexity while maintaining manufacturing feasibility through the injection molding process.
Solution Approach 2:
The two-color injection molding process uses composite material technology to create a waterproof member with different material properties in different regions. The first color material forms the peripheral sealing area while the second color material forms the button pressing area, allowing differentiated properties in a single integrated component.
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 enhanced waterproofing and prevents accidental switch triggering under water pressure, ensuring reliable functionality and improved user experience in wet conditions.
Implementation Method 1
The waterproof member and the holding part are integrally formed through two-color injection molding
Implementation Method 2
When a force from the button is applied to the first waterproof portion, the first waterproof portion is deformed under the force
Data Source
AI summary
A transducer assembly includes a transducer box, a deformable waterproof member, and a button. The transducer box has a mounting cavity and a mounting area that are in communication with each other. The waterproof member is located in the mounting area and integrally formed with the transducer box through two-color injection molding. The waterproof member is configured to cover an opening of the mounting area facing towards an interior of the transducer box. The button is mounted in the mounting area and connected to the waterproof member.