Permeable Isolation Assembly for Sound Generator
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Solution Overview
Problem
The existing sound generators in portable devices face challenges with low assembly efficiency due to the need for symmetrically arranged leakage holes requiring separate damper placement, which hinders automatic assembly and increases production time.
Innovation Solution
A sound generator design featuring a magnetic circuit system with symmetrically arranged through holes on the bottom wall, covered by a permeable isolation assembly comprising a damper, back gums, and a PET layer, allowing for simultaneous coverage of both holes with a single attachment, improving assembly efficiency and acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two leakage holes are symmetrically arranged with separate dampers, then sound pressure balance is achieved, but assembly efficiency decreases due to requiring two separate attachment operations
Solution Approach 1:
The patent merges two separate dampers into a single integrated damper structure that covers both leakage holes simultaneously. This integrated damper is attached through a single operation, eliminating the need for two separate attachment processes while still maintaining sound pressure balance across both holes.
Solution Approach 2:
The integrated damper structure serves multiple functions: it covers both leakage holes, provides sound pressure balance for both holes, and acts as a single assembly unit. This multi-functional design allows one component to perform what previously required two separate components and operations.
2Reliability
If two separate dampers are used for two leakage holes, then each hole is individually covered, but the number of assembly steps increases
Solution Approach 1:
The patent combines the functionality of two separate dampers into one integrated structure. This single damper is designed to cover both leakage holes simultaneously, reducing the assembly process from two separate steps to one unified operation, thereby simplifying the overall assembly process.
3Ease of manufacture
If traditional separate damper design is used, then manufacturing is straightforward, but automatic assembly becomes difficult
Solution Approach 1:
The integrated damper design consolidates two separate components into one, which can be automatically positioned and attached in a single operation. This reduces the complexity for automated assembly systems, as they no longer need to perform multiple precise placement operations for separate dampers, thereby improving automatic assembly capability.
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
This design enhances production efficiency, reduces production thickness, and improves low-frequency acoustic performance by ensuring balanced sound pressure and damping, facilitating miniaturization and stability while simplifying the assembly process.
Implementation Method 1
a permeable isolation assembly (4)... The permeable isolation assembly (4) is attached to the magnetic circuit system (3)... improving the low-frequency acoustic performance of the sound generator (100)
Implementation Method 2
a magnetic circuit system (3) fixed to the frame (1)... The magnetic circuit system (3) is used to drive the vibration system (2) to vibrate
Data Source
AI summary
The present invention provides a sound generator having a permeable isolation assembly including a permeable damper, two gums attached to the opposite ends of the permeable damper and PET layer located between two gums. The presence of the PET layer improves the hardness of the permeable damper so as to form adsorption when the permeable isolation component is automatically attached, which is convenient for automatic attachment of the permeable isolation assembly and further improves production efficiency and product qualification rate.