Speaker Elastic Support Member Reducing Suspension Interference Noise
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Solution Overview
Problem
In existing speakers, the phase difference between the voice membrane suspension and the force arm of the flexible circuit board causes interference, resulting in noise during operation.
Innovation Solution
A speaker design that integrates a flexible circuit board with a second diaphragm using a thermosetting adhesive, forming them into one piece, which reduces assembly complexity and enhances sound emission performance by minimizing mutual impact between the suspension and beam structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the flexible circuit board is located under the voice membrane, then the speaker structure is compact and easy to assemble, but the voice membrane suspension interferes with the force arm of the flexible circuit board causing noise
Solution Approach 1:
The patent merges the flexible circuit board with the voice membrane into an integrated structure where the flexible circuit board forms part of the voice membrane assembly. This integration eliminates the separate positioning of the flexible circuit board under the voice membrane, thereby removing the source of interference between the suspension and force arm while maintaining compact construction.
2Object-generated harmful factors
If the flexible circuit board is integrated with the voice membrane, then noise from interference is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-forming the flexible circuit board with the voice membrane in a unified structure before final assembly. The flexible circuit board is designed and manufactured as an integral part of the voice membrane assembly, with the force arm and suspension elements pre-positioned and bonded together, simplifying the overall manufacturing process despite the integrated design.
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 improves the Xmax range and pure tone yield of the speaker while simplifying the manufacturing process and reducing costs, effectively addressing noise issues caused by interference.
Implementation Method 1
A speaker design that integrates a flexible circuit board with a second diaphragm using a thermosetting adhesive, forming them into one piece
Data Source
AI summary
A speaker and a method for manufacturing the speaker are provided. The speaker includes: a vibration unit; a magnetic circuit unit; and a housing for receiving the vibration unit and the magnetic circuit unit. The vibration unit includes: a first diaphragm fixed to the housing; a voice coil arranged under the first diaphragm to drive the first diaphragm to vibrate and emit sound; and an elastic support member arranged under the voice coil, fixed to the housing and elastically supporting the voice coil. The elastic support member includes a flexible circuit board connected to the voice coil and a second diaphragm fixed under the flexible circuit board. The housing includes a holder, the elastic support member is fixed to the holder, and the flexible circuit board is attached and fixed to the second diaphragm.