Integrated novel voice coil and manufacturing method thereof

Abstract

The invention discloses an integrated novel voice coil and a manufacturing method thereof. The integrated novel voice coil comprises a voice cylinder (1) made of a base material of flexible print circuit (short for FPC), an integrated inductance coil (2) formed by etching or laser engraving of an FPC base material and an integrated copper-clad layer of the FPC base material or printing of a conductive circuit on the FPC base material, and two circuit board coil bonding pads (3) formed on the voice coil (1) and used for being connected with a circuit board. According to the invention, the coilcircuit and the voice cylinder are integrated, so that the probability of wire scattering and wire loosening of the coil is zero; and only the copper foil and the FPC base material can resist the temperature of more than 300 DEG C and are light and thin, so that the magnetic material of the loudspeaker can be reduced, the volume is reduced, and the effects of reducing the cost and saving the energy are achieved.

Description

technical field [0001] The invention relates to the field of audio equipment, in particular to a novel integrated voice coil and a manufacturing method thereof. Background technique [0002] In the prior art, the sound tube is usually made of insulating sheet material or metal sheet material or a mixture sheet material rolled into a tubular shape with a set diameter as the skeleton of the voice coil. One end of the sound tube is evenly wound with an enamelled copper wire to form a coil. After the coil is wound to a specified number of turns, the two ends of the coil are drawn out and wrapped with insulating materials to complete the production of the voice coil. [0003] Inadequacies of existing voice coils; [0004] 1. It is made of stacked materials, and the temperature resistance of various materials is different, resulting in insufficient temperature resistance, which does not exceed 250 degrees. Moreover, the reliability of the paste is unstable, and the hardness of t...

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Problems solved by technology

Moreover, the reliability of the paste is unstable, and the hardness of the voice coil is also unstable, which is prone to loose / off-line defects;

[0005] 2. It is relatively heavy, because the skeleton and the copper wire are separated, and they are attached by glue, which will increase the weight of the glue;

[0006] 3. Relatively thick, the thickness of the insulation layer of the enameled wire, the gap between the enameled wires, the thickness of the glue, and the superposition of multiple thicknesses make it difficult to make it thin;

[0007] The voice coil is a relatively compact device, and the existing production process of the voice coil is difficult to realize automatic production

At present, the production is carried out in a semi-automatic winding and segmented operation mode, the output is low, and the reliability and consistency of mass production are poor.

[0008] And there is no possibility of repair, the defect rate is high, and there are many factors affecting product quality, such as material characteristics, winding method / strength / density / uniformity, temperature resistance / adhesion / curing degree / hardness / toughness of fixing glue Degree, drawing uniformity of enameled copper wire / purity of copper / thickness of insulating varnish / temperature resistance of insulating varnish / uniformity of insulating varnish, strength of skeleton / temperature resistance / thermal conductivity, sticker or glue for fixing lead Paste strength / uniformity / temperature resistance, these factors may cause high defects such as loose wires / broken wires / short circuit / deformation and large errors in product performance indicators, which also cause the cost of finished products to remain high

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