Voice coil, manufacturing method of voice coil and loudspeaker

Abstract

A voice coil comprises a first base material layer, a first conductive circuit layer, a second conductive circuit layer, a first adhesive layer, a second base material layer and a third conductive circuit layer, wherein the first conductive circuit layer and the second conductive circuit layer are formed on two opposite surfaces of the first base material layer; the first adhesive layer is formedon the first conductive circuit layer; the second base material layer is formed on the first adhesive layer; the third conductive circuit layer is formed on the second base material layer; the first conductive circuit layer comprises at least one first conductive circuit, the second conductive circuit layer comprises at least one second conductive circuit, the third conductive circuit layer comprises at least one third conductive circuit, the first conductive circuit and the second conductive circuit are respectively coiled on the first base material layer in a ring shape, and the third conductive circuit is coiled on the second base material layer in a ring shape; the first conductive circuit, the second conductive circuit and the third conductive circuit are electrically connected end toend in the current flowing direction. The first conductive circuit, the second conductive circuit and the third conductive circuit form a voice cavity of the voice coil. The invention also relates toa manufacturing method of the voice coil and a loudspeaker.

Description

technical field [0001] The invention relates to a multilayer printed circuit board technology, in particular to a voice coil, a manufacturing method of the voice coil and a loudspeaker. Background technique [0002] The loudspeaker is a commonly used electroacoustic transducer device, which is often used in electronic components that produce sound. Loudspeakers generally include a magnetic circuit system (permanent magnet, stem, magnetic plate), vibration system (paper cone (diaphragm), voice coil) and support auxiliary system (centering support, basin frame (diaphragm frame), pad side) and other three parts. Among them, the voice coil is the driving unit of the speaker. It is made of very thin copper wires wound on the paper tube in two layers, generally dozens of turns, also known as the coil, placed in the magnetic core column and the magnetic plate. In doubt. The voice coil and the paper cone are fixed together. When the sound current signal is passed into the voice c...

AI Technical Summary

Problems solved by technology

However, the sound cavity (sound cavity) of the voice coil designed in this way is smaller and thicker

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