Loudspeaker Voice Coil Supporting Section Assembly
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Solution Overview
Problem
Conventional loudspeakers face challenges in reducing harmonic distortion due to stress-induced deflection of edges during assembly, which affects the initial symmetry and linear characteristics.
Innovation Solution
A supporting section is added to the voice coil body, allowing for a larger inner diameter of the suspension holder and diaphragm, enabling stress-free alignment and gluing, thereby minimizing harmonic distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner circumferential end of diaphragm is made to contact voice coil body outer wall surface for assembly, then the assembly operation is facilitated, but stress is generated due to mutual contact which affects the deflection state of edge 4 and initial symmetry
Solution Approach 1:
A supporting section is introduced as an intermediary component between the diaphragm and voice coil body. The supporting section protrudes from the voice coil body outer wall surface, allowing the diaphragm's inner circumferential end to rest on it during assembly without direct contact with the voice coil body. This mediator eliminates the stress-generating mutual contact while still facilitating the assembly operation, thereby preserving initial symmetry.
2Manufacturing precision
If the diameter of suspension holder inner circumference is made greater than voice coil body outer circumference, then stress-free alignment is enabled, but the device complexity increases due to the supporting section structure
Solution Approach 1:
The voice coil body is segmented into functional zones: a main body portion and a supporting section that protrudes outward. This segmentation allows the supporting section to serve as a dedicated assembly interface with a larger effective diameter, enabling stress-free alignment of the suspension holder and diaphragm. The segmented structure achieves improved alignment precision while adding minimal complexity through a simple protruding element.
Data Source
AI summary
Voice coil body of a loudspeaker is provided at the outer circumferential wall surface with a supporting section. Diameter of the inner circumference of suspension holder is greater than outer diameter of the voice coil body while diameter of the inner circumference of diaphragm is greater than diameter of the inner circumference of suspension holder for facilitating a gluing of the inner circumferential end of suspension holder and the inner circumferential end of diaphragm on the supporting section and to the voice coil body. By so doing, harmonic distortion of a loudspeaker can be further reduced.