Voice coil and micro-loudspeaker with voice coil

A voice coil and voice coil wire technology, used in sensors, electrical components, circuit lead arrangement/elimination and other directions, can solve the problem of voice coil lead wire disconnection, etc., to reduce the probability of disconnection, the height difference is small, and the disconnection is alleviated. Effect

Inactive Publication Date: 2016-08-17
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the vibration displacement of the micro-speaker becomes larger and larger, especially after the large-displacement reliability test, there will be a problem of disconnection of the voice coil lead

Method used

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  • Voice coil and micro-loudspeaker with voice coil
  • Voice coil and micro-loudspeaker with voice coil
  • Voice coil and micro-loudspeaker with voice coil

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, a voice coil includes a body 10 wound by a voice coil wire, and the number of winding layers of the voice coil wire is an even number of layers, usually two or four layers. One end of the voice coil body 10 is glued to the vibrating membrane, and the other end is an outlet end. When winding the voice coil, it is wound from the inner layer to the outer layer, the starting end of the innermost layer leads to the beginning lead 12 of the voice coil, and the end of the outermost layer leads to the end lead 14 of the voice coil. The number of layers is an even number, so the start lead 12 and the end lead 14 are located at the end of the body 10 of the voice coil away from the diaphragm. This embodiment requires that there is a height difference between the initial outlet position of the innermost voice coil wire and the end outlet position of the outermost voice coil wire, and the height difference should be less than 1.5 times the diameter of th...

Embodiment 2

[0027] A miniature loudspeaker includes a vibrating system and a magnetic circuit system, and the vibrating system includes a diaphragm and a voice coil combined together. The voice coil is the voice coil described in the first embodiment.

[0028] Because the micro-speaker of the present invention adopts the voice coil described in Embodiment 1, the reliability is high, the lead wire of the voice coil is not easy to break, the service life is long, and it can adapt to the development trend of increasing vibration displacement of micro-speaker products.

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Abstract

The invention discloses a voice coil and a micro-loudspeaker with the voice coil, relating to the technical field of electro-acoustic products. The voice coil is formed by a voice coil wire in a winding manner; the number of winded layers of the voice coil wire is an even number; a height difference exists between the initial wire outgoing position of the voice coil wire positioned at the innermost layer and the tail wire outgoing position of the voice coil wire positioned at the outmost layer; and the height difference is less than 1.5 times of the wire diameter of the voice coil wire. According to the voice coil and the micro-loudspeaker with the voice coil disclosed by the invention, the technical problem that the voice coil is easy to break while working in large displacement in the prior art can be solved; and voice coil leads of the voice coil and the micro-loudspeaker with the voice coil disclosed by the invention are difficult to break, high in reliability and long in service life, and can be suitable for development tendency of micro-loudspeaker products.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a voice coil and a micro-speaker provided with the voice coil. Background technique [0002] Microspeaker is an important acoustic component in portable electronic equipment, which is used to convert sound wave electric signal into sound signal, and is an energy conversion device. A microspeaker usually includes a vibration system and a magnetic circuit system. The vibration system includes a combined diaphragm and a voice coil. The voice coil is the driving part of the microspeaker. When an alternating audio current passes through the voice coil, the voice coil produces The changing magnetic field, which attracts or repels the magnetic field of the micro-speaker magnetic circuit system, causes the voice coil to produce mechanical vibrations that cut the magnetic force lines, thereby driving the diaphragm to vibrate and produce sound. The voice coil is made of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/06
CPCH04R9/02H04R9/06H04R1/06H04R9/045H04R9/046H04R2499/11H04R9/025
Inventor 王琪忠邵明辉
Owner GOERTEK INC
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