Earphone Receiver Protector with Pressure Equilibrium Hole
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Solution Overview
Problem
Kernel-type earphones with complete ear canal sealing cause pressure differences leading to discomfort due to air compression, necessitating an intentional leakage hole that limits the earphone's shape and design.
Innovation Solution
A receiver with a pressure equilibrium structure featuring a magnetic circuit, voice coil, diaphragm, and a protector with a gap and pressure equilibrium hole, allowing for air path formation without external components, enabling pressure equilibrium without shape constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a leakage hole is installed to leak air from the front of the diaphragm, then air pressure can be reduced and discomfort can be alleviated, but the shape of the earphone is limited and design flexibility is reduced
Solution Approach 1:
The protector structure is merged with the pressure equilibrium function. The protector not only protects the diaphragm but also incorporates a through-hole that serves as the pressure equilibrium hole, combining two functions into one component. This eliminates the need for separate leakage holes in the housing while maintaining pressure relief capability.
Solution Approach 2:
The protector is designed to perform multiple functions: protecting the diaphragm from damage, forming part of the magnetic circuit structure, and providing pressure equilibrium through its through-hole. This multi-functionality allows the earphone to maintain various shapes without compromising pressure relief.
2Object-affected harmful factors
If separate air path components are used to achieve pressure equilibrium, then pressure balance can be achieved, but device complexity increases and production time is extended
Solution Approach 1:
The pressure equilibrium function is merged into the protector component. The through-hole in the protector serves as the pressure equilibrium hole, eliminating the need for separate air path components such as dedicated holes in the housing or additional ducts. This reduces component quantity and simplifies the overall structure.
Solution Approach 2:
The protector structure itself provides the pressure equilibrium function through its inherent through-hole design. The structure serves itself by incorporating the pressure relief function within its own geometry, rather than requiring external components to provide this function.
3Object-affected harmful factors
If separate air path components are used, then pressure equilibrium can be achieved, but manufacturing precision requirements increase and defect rates rise
Solution Approach 1:
By integrating the pressure equilibrium hole into the protector component, the number of separate parts that require precise alignment and assembly is reduced. The through-hole is formed as part of the protector manufacturing process itself, eliminating the need for precise assembly between multiple components and reducing manufacturing precision requirements.
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 allows for efficient pressure equilibrium within the earphone, reducing discomfort and design limitations, while simplifying production by eliminating the need for separate air path components, thus reducing defect rates and shortening production time.
Implementation Method 1
a voice coil vibrated by mutual electromagnetic force with the magnetic circuit
Implementation Method 2
an air path is formed by the hole of the protector and the gap between the magnetic circuit and the protector
Data Source
AI summary
A receiver having a pressure equilibrium structure includes a magnetic circuit including a yoke, a permanent magnet coupled to the yoke, and a top plate attached to the permanent magnet, a voice coil configured to vibrate by mutual electromagnetic force with the magnetic circuit, a diaphragm allowing the voice coil to be attached thereto and vibrated by the voice coil to generate sound, and a protector coupled to an upper surface of the diaphragm and surrounding an outer side of the magnetic circuit with a gap from an outer periphery of the magnetic circuit, wherein the protector has a hole communicating with a gap portion with the magnetic circuit and an air path is formed by the hole of the protector and the gap between the magnetic circuit and the protector.