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Loudspeaker

A speaker and magnetic conduction technology, applied in the field of electro-acoustics, can solve the problems of reduced BL value, poor speaker distortion, poor symmetry and flatness, etc., to avoid noise, avoid bad distortion, and improve acoustic performance.

Active Publication Date: 2014-03-26
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to measure the mechanical force received by the voice coil in the magnetic gap, those skilled in the art introduced the BL value. BL is the length L of a wire with a certain number of turns multiplied by the magnetic flux density per unit area B. During the working process of the speaker device, when the input speaker When the voltage increases, the displacement of the voice coil deviates more and more from the magnetic gap, the magnetic flux density B in the working area of ​​the voice coil decreases, and the total BL value decreases, resulting in poor symmetry and flatness of the BL, causing poor distortion of the speaker, and affecting the speaker Acoustic performance of the device

Method used

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Examples

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Embodiment 1

[0027] Speaker device of the present invention, such as figure 1 As shown, the magnetic base plate 5 is included, and the central position of the magnetic base plate 5 is provided with a main magnet 31, and a side magnet 32 ​​is arranged around the main magnet 31, and there is a magnetic gap between the side magnet 32 ​​and the main magnet 31; The distribution of magnetic force lines, the main magnet 31 is provided with a central magnetic guide plate 41 away from the magnetic base plate 5, and the side magnet 32 ​​is provided with a side magnetic guide plate 42 away from the magnetic base plate 5. The shape of the central magnetic guide class 41 is the same as that of the main magnet 31. Correspondingly, the shape of the side magnetic guide plate 42 corresponds to the shape of the side magnet 32; the magnetic base plate 5, the main magnet 31, the central magnetic guide plate 41, the side magnet 32 ​​and the side magnetic guide plate 42 constitute the magnetic circuit system of ...

Embodiment 2

[0032] Speaker device of the present invention, such as Figure 5 As shown, the magnetic base plate 5 is included, and the central position of the magnetic base plate 5 is provided with a main magnet 31, and a side magnet 32 ​​is arranged around the main magnet 31, and there is a magnetic gap between the side magnet 32 ​​and the main magnet 31; The distribution of magnetic force lines, the main magnet 31 is provided with a central magnetic guide plate 41 away from the magnetic base plate 5, and the side magnet 32 ​​is provided with a side magnetic guide plate 42 away from the magnetic base plate 5. The shape of the central magnetic guide class 41 is the same as that of the main magnet 31. Correspondingly, the shape of the side magnetic guide plate 42 corresponds to the shape of the side magnet 32; the magnetic base plate 5, the main magnet 31, the central magnetic guide plate 41, the side magnet 32 ​​and the side magnetic guide plate 42 constitute the magnetic circuit system of...

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Abstract

The invention discloses a loudspeaker comprising a vibrating system and a magnetic circuit system. The magnetic circuit system comprises a magnetic baseplate and a main magnet arranged on the magnetic baseplate, and is provided with magnetic gaps. The vibrating system comprises voice coils, a vibrating film, a framework and a centering support. The framework is a magnetic framework which is integrated with the voice coils. The voice coils and the magnetic framework are arranged in the magnetic gaps of the magnetic circuit system. The magnetic framework is made of high-magnetic-permeability materials. The magnetic framework and the voice coils are integrally fixed on one side, close to the main magnet, of the centering support. The vibrating film is fixed with one side, away from the main magnet, of the centering support. The loudspeaker has the advantages of good acoustic performance and low distortion defective rate.

Description

technical field [0001] The invention relates to the field of electroacoustics, in particular to a loudspeaker device with good acoustic performance. Background technique [0002] With the expansion of the consumer electronics market, a large number of consumer electronics products such as mobile phones and notebook computers are widely used. As an important acoustic component in consumer electronics products, speaker devices have a wide demand. With the improvement of people's requirements for consumer electronic products, the acoustic performance of speaker devices has attracted more and more attention. [0003] The traditional technology loudspeaker device includes a vibration system and a magnetic circuit system. The magnetic circuit system includes a main magnet and side magnets arranged around the main magnet. The main magnet and the side magnets form a magnetic gap. In order to correct the magnetic force lines in the magnetic gap, between the main magnet and the side m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02
Inventor 张成蔡晓东
Owner GOERTEK INC