Ear Cushion Assembly With Mounting Plate For Replaceable Acoustic Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ear cushion assemblies for headphones are either fixed and prone to wear, leading to short lifespan, or use elastic elements that compromise acoustic sealing and aesthetics, and lack easy replaceability.
Innovation Solution
An ear cushion assembly with a mounting plate featuring sound passage openings and screw holes, where the ear cushion forms an annular, circumferentially-fixed, airtight sealing surface, securely attached to the earpiece housing using screws, allowing for easy detachment and replacement, enhancing acoustic performance and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ear cushion is fixed on the earpiece housing, then the acoustic sealing is improved, but the service life is reduced due to wear and tear
Solution Approach 1:
The ear cushion assembly is divided into separate components: the ear cushion itself and the mounting plate with screw holes. This segmentation allows the cushion to be replaced independently without replacing the entire earpiece housing, resolving the contradiction between maintaining acoustic sealing and extending service life through replaceability.
Solution Approach 2:
The design enables the ear cushion to be easily removed and replaced when worn or damaged, while the mounting plate and earpiece housing remain in use. This allows the functional cushion to be discarded and replaced, extending the overall service life of the earpiece assembly while maintaining acoustic sealing.
2Ease of operation
If the ear cushion is mounted by elastic elements in a groove, then the ease of replacement is improved, but the acoustic sealing and aesthetics deteriorate
Solution Approach 1:
The elastic element mounting mechanism is replaced with a screw-based mechanical fastening system. This substitution maintains ease of replacement while providing superior acoustic sealing through the rigid, precise connection between the mounting plate and earpiece housing, eliminating the sealing gaps present in elastic element designs.
3Ease of operation
If the ear cushion is mounted by elastic elements, then the ease of replacement is improved, but the visual appearance deteriorates
Solution Approach 1:
The elastic element mounting system is replaced with a screw-based system that provides a cleaner, more aesthetically pleasing appearance. The mounting plate with screw holes offers a structured, precise visual appearance compared to the bulky and visible elastic elements, while maintaining ease of replacement.
4Ease of operation
If the ear cushion is forced on the earpiece housing, then the ease of installation is improved, but the acoustic sealing and overall quality deteriorate
Solution Approach 1:
The ear cushion assembly is segmented into the cushion and mounting plate components, allowing for precise alignment and installation through the mounting plate's screw holes. This segmentation enables easy installation while achieving proper acoustic sealing through the structured mounting interface.
Solution Approach 2:
The mounting plate serves as an intermediary component between the ear cushion and the earpiece housing. It provides a structured interface with screw holes that facilitates easy installation while ensuring proper acoustic sealing, mediating between the cushion and housing without the deficiencies of direct forcing or elastic elements.
Data Source
AI summary
Ear cushion assemblies, and headphones incorporating ear cushion assemblies, the ear cushion assembly including an ear cushion coupled to a mounting plate, where the mounting plate defines plural openings for a passage of sound, and defines plural openings for fasteners; and where the ear cushion grips an outer circumference of the mounting plate to form an annular, circumferentially-fixed, and substantially airtight sealing surface.