Hexagonal Voice Coil Wire for Loudspeaker Volume Utilization
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Solution Overview
Problem
Conventional voice coils have low volume utilization ratios and poor heat dissipation due to air gaps, and existing methods to reduce these gaps, such as compression, can damage the insulation layer and complicate the winding process.
Innovation Solution
A voice coil wire with a hexagonal cross-section and circular arc chamfers to ensure surface-to-surface contact and reduce air gaps, enhancing volume utilization and heat dissipation while maintaining the integrity of the insulation layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If compression method is used to reduce air gaps between circular voice coil wires, then air gaps are reduced, but insulation layer is ruptured and short circuit occurs
Solution Approach 1:
The patent changes the geometric parameter of the voice coil wire from circular cross-section to hexagonal cross-section. This parameter change allows the wires to pack more efficiently with smaller air gaps between adjacent wires, while the hexagonal shape with rounded corners ensures smooth winding and prevents insulation layer damage, thus resolving the contradiction between reducing air gaps and maintaining insulation integrity
Solution Approach 2:
The patent applies curvature by rounding the corners of the hexagonal cross-section of the voice coil wire. This curvature modification allows the hexagonal wires to be wound smoothly without sharp corners that would cause insulation damage during compression or winding, while still maintaining the space-efficient hexagonal geometry that reduces air gaps
2Loss of energy
If compression method is used to reduce air gaps, then air gaps are reduced, but glue adhesive force is destroyed or reduced
Solution Approach 1:
The patent changes the cross-sectional geometry from circular to hexagonal, which inherently reduces air gaps between adjacent wires during winding. This geometric parameter change eliminates the need for compression to reduce air gaps, thereby preserving the glue adhesive force between layers while still achieving better space utilization
3Volume of stationary object
If square cross-section voice coil wire is used, then volume utilization ratio is improved, but inclination and distortion occur during winding
Solution Approach 1:
The patent modifies the square cross-section by rounding the corners to create a hexagonal cross-section with curved corners. This curvature modification allows the wire to be wound smoothly without sharp angles that cause inclination and distortion, while still maintaining the space-efficient geometry that improves volume utilization ratio
Solution Approach 2:
The patent changes the cross-sectional shape parameter from square to hexagonal. This parameter change provides a balance between space efficiency (improved volume utilization ratio) and winding smoothness (reduced inclination and distortion), as the hexagonal shape with rounded corners packs efficiently while allowing gentle bending during winding
4Ease of manufacture
If circular cross-section voice coil wire is used, then winding process is simple, but volume utilization ratio is low and heat dissipation is poor
Solution Approach 1:
The patent changes the cross-sectional geometry from circular to hexagonal, which improves volume utilization ratio and heat dissipation by reducing air gaps between wires. The winding process remains relatively simple as the hexagonal shape with rounded corners allows for smooth winding without the complexity of handling sharp-cornered square wires, thus resolving the contradiction between manufacturing simplicity and space efficiency
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 hexagonal voice coil wire design improves volume utilization and heat dissipation, reduces the voice coil's width and height, and simplifies the winding process, resulting in a louderpeaker with higher sensitivity and smaller thickness.
Implementation Method 1
the voice coil wire of such a structure... the presence of air gaps adversely affects heat dissipation of the voice coil
Implementation Method 2
When an alternating voice current passes through the voice coil, the voice coil generates a magnetic field changing with the voice current. The changing magnetic field and the magnetic field of the magnetic circuit system of the loudspeaker attract or repulse to enable the voice coil to generate mechanical vibration
Data Source
AI summary
A voice coil wire, a voice coil wound by the voice coil wire, and a loudspeaker provided with the voice coil, which relate to the technical field of electro acoustic products. The voice coil wire comprises a conductor layer having an electric conduction effect and an insulation layer surrounding an outer side of the conductor layer. The cross-section of the voice coil wire is a hexagon, and the side lengths of the hexagon are equal. The voice coil wire, the voice coil wound by the voice coil wire, and the loudspeaker provided with the voice coil of the application can solve the technical problems in the prior art such as a low volume ratio of the voice coil and a complicated winding process. According to the voice coil wire, the voice coil, and the loudspeaker provided with the voice coil of the application, the voice coil is high in volume ratio, small in volume, good in heat dissipation performance and its winding process is simple, and the loudspeaker is high in sensitivity, small in thickness and good in acoustic performance.