Moving Magnet Speaker

A loudspeaker and moving magnet technology, applied in the direction of sensors, loudspeakers, electrical components, etc., can solve the problems of difficult to improve the high-frequency transient response of moving-coil speakers, unable to meet performance requirements, and low high-frequency performance , to achieve the effect of improving the poor transient response of high frequency, enhancing the force and high sensitivity

Active Publication Date: 2022-06-03
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the speakers used in portable electronic devices are mostly dynamic speakers. The working principle of the dynamic speaker is that the electrified voice coil is affected by the Ampere force in the magnetic field, which drives the diaphragm to vibrate and produce sound. Due to its principle, the dynamic It is difficult to improve the high-frequency transient response of high-frequency speakers, and the high-frequency performance is low, which cannot meet the performance requirements of current Hi-Fi (high-fidelity) equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like figure 1 and figure 2 Commonly shown, a moving magnet loudspeaker has a rectangular parallelepiped structure and includes a rectangular annular casing 10 with openings at the upper and lower ends. The casing 10 accommodates a vibrating membrane and a voice coil 34 arranged in parallel with the vibrating membrane. A driving magnet 24a is fixed on the side of the vibrating membrane close to the voice coil 34; The force drives the diaphragm to vibrate and produce sound. In the present embodiment, the lower end surface of the casing 10 is combined with a plate-like structure basin frame 30 , the voice coil 34 is fixed on the position of the basin frame 30 located in the casing 10 , and an armature 36 is provided in the central hole of the voice coil 34 . 36 is also fixed to the basin frame 30. The diaphragm is arranged above the voice coil 34, and the diaphragm includes a folded ring 22 whose edge is fixed on the upper end face of the casing 10. The middle of the f...

Embodiment 2

[0041] This embodiment is basically the same as the first embodiment, and the difference lies in:

[0042] like image 3 As shown, the height of the driving magnet 24b is larger, and its lower surface exceeds the upper surface of the voice coil 34, that is, the lower end of the driving magnet 24b is inserted into the central hole of the voice coil 34, and there is a gap between the driving magnet 24b and the armature 36. Vibration space.

Embodiment 3

[0044] This embodiment is basically the same as the first embodiment, and the difference lies in:

[0045] like Figure 4 As shown, the size of the driving magnet 24c is consistent with the size of the central hole of the voice coil 34, or the size of the driving magnet 24c is larger than the size of the central hole of the voice coil 34, the height of the driving magnet 24c is smaller than its width, it is a flat structure, In this embodiment, sufficient vibration space is required between the drive magnet 24c and the magnetically conductive member 32 .

[0046] like Figure 5 As shown, the working principle of the moving magnet speaker of the present invention is as follows:

[0047] Taking the moving magnet loudspeaker described in Embodiment 1 as an example, the vibration direction of the diaphragm is the vertical direction. In the figure, ⊙ and ⊕ represent the current direction in the voice coil 34, and ⊙ indicates that the current direction is perpendicular to the outs...

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Abstract

The invention discloses a moving magnet loudspeaker, which relates to the technical field of electroacoustic products. A drive magnet is fixed on one side of the coil; the voice coil forms an electromagnet after being energized, and interacts with the drive magnet to drive the diaphragm to vibrate and produce sound. The moving magnet loudspeaker of the present invention solves technical problems such as the poor high-frequency transient response of the moving coil loudspeaker in the prior art. The high-frequency transient response of the moving magnet loudspeaker of the present invention is good, and at the same time, the F0 is low, the sensitivity is good, and the overall performance High, able to meet the performance requirements of high-fidelity equipment.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a moving magnet speaker. Background technique [0002] Speaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signal and sound signal, and is an energy conversion device. At present, the speakers used in portable electronic devices are mostly moving coil speakers. The working principle of the moving coil speaker is that the electrified voice coil is subjected to the action of ampere force in the magnetic field, which drives the diaphragm to vibrate and sound. It is difficult to improve the high-frequency transient response of high-frequency speakers, and the high-frequency performance is low, which cannot meet the performance requirements of current Hi-Fi (high fidelity) equipment. SUMMARY OF THE INVENTION [0003] In view of the above defects, the technical problem to be solved ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/02H04R9/06H04R2400/11
Inventor 汲鹏程祖峰磊许超
Owner GOERTEK INC
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