Specially-shaped voice coil, and specially-shaped voice coil winding device and method

Abstract

The invention discloses a specially-shaped voice coil, and a specially-shaped voice coil winding device and method. The specially-shaped voice coil comprises at least two circumferentially wound coillayers; one sides of the adjacent coil layers are aligned; the other sides of the adjacent coil layers are shaped as steps; and furthermore, any one independent coil is rectangular or quasi-rectangular. According to the specially-shaped voice coil, and the specially-shaped voice coil winding device and method disclosed by the invention, in a same-length winding condition by same enamelled wires, the magnetic flux of the specially-shaped voice coil is greater than that of the traditional rectangular voice coil; direct forming of the specially-shaped voice coil, the single coil of which is rectangular or quasi-rectangular, can be realized; reshaping is unnecessary; the voice coil is high in precision and steady in magnetic flux; the specially-shaped voice coil has two winding forms includinginternal wire incoming and external wire incoming; the cut-in angle can be adjusted through a wire incoming unit; guide and fixation of the enamelled wires are convenient; due to design of a temperature control unit, the enamelled wires of the voice coil are stuck stably and reliably; the overall design is simple; operation is carried out conveniently and reliably; the yield of directly formed products is high; and thus, the specially-shaped voice coil is easy to popularize and apply.

Description

technical field [0001] The invention relates to a voice coil, in particular to a special-shaped voice coil, a device and a method for winding the special-shaped voice coil, and belongs to the technical field of voice coil winding. Background technique [0002] Electronic devices with speakers and receivers, such as mobile phones, laptops, desktop computers, and smart watches, will involve the installation of voice coils. [0003] Due to the improvement of the acoustic requirements of electronic equipment due to the update of current electronic products, such as better signal-to-noise ratio, higher sensitivity, etc., the bottleneck of the assembly accuracy of the current acoustic horn (speaker and receiver) comes from the tolerance deviation of the coil. Large, unable to meet the further improvement of performance. [0004] The current winding method of the voice coil is to convert the circular coil into a square coil by stretching the circular coil after winding the circula...

AI Technical Summary

Problems solved by technology

[0003] Due to the improvement of the acoustic requirements of electronic equipment due to the update of current electronic products, such as better signal-to-noise ratio, higher sensitivity, etc., the bottleneck of the assembly accuracy of the current acoustic horn (speaker and receiver) comes from the tolerance deviation of the coil. Large, unable to meet the further improvement of performance

[0004] The current winding method of the voice coil is to convert the circular coil into a square coil by stretching the circular coil after winding the circular coil. This implementation will lead to a large deviation of the position of the incoming and outgoing wires, which can reach more than 0.5mm; And the external dimension of the voice coil is unstable, the fluctuation value is about 0.05mm; the height error of the voice coil is relatively large, the fluctuation value is about 0.1mm; the verticality error of the voice coil is also relatively large, and the distribution reaches 0.1mm; in addition, After the circular coil is shaped into a square shape by stretching, the enameled wire will become thinner during the stretching process, so that the coils will not fit tightly and the magnetic flux will be affected.

Since the voice coil needs to be shaped after winding, it is difficult to combine traditional voice coil winding with voice coil mounting

[0005] Finally, the magnetic flux of the traditional regular rectangular voice coil has certain limitations. How to increase the magnetic flux of the same quality voice coil by changing the shape of the voice coil is also the subject of this case.

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