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Double-layer-voice-coil-group moving-iron earphones

A voice coil group and voice coil technology, applied in the direction of earpiece/headphone accessories, etc., can solve the problems of distortion, small contact area between the voice coil and the sound film, and no design, and achieve the effect of large dynamics, uniform force and sensitive response.

Inactive Publication Date: 2014-01-01
姜福文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current headphone equipment usually uses a magnet under the sound film to interact with a set of concentric voice coils that are energized. The voice coil drives the sound film to vibrate to generate sound waves. Due to the small contact area between the voice coil and the sound film, distortion is easy to occur.
I applied for the magnetic diaphragm of earphones in 2012, and the invention patent publication number is CN 103297899 A. I only made technological innovations on the magnetic diaphragm of earphones, but the magnetic diaphragm did not design a uniform magnetic field.

Method used

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  • Double-layer-voice-coil-group moving-iron earphones

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Experimental program
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Effect test

Embodiment

[0018] Such as figure 1 As shown, there are two layers of permanent magnets on the magnetic diaphragm 112 of the double-layer voice coil moving iron earphone 115 , such as the upper permanent magnet 113 and the lower permanent magnet 114 . There is a casing 116 on the magnetic diaphragm 112, and the casing plays the role of fixing internal components. There is a sound guide hole 108 on the casing 116 , and the sound wave generated by the vibration of the magnetic diaphragm 112 is output through the sound guide hole 108 . The magnetic diaphragm 112 has two layers, a voice coil group composed of multiple voice coils and magnetic conductors, such as a voice coil group composed of a voice coil 102 and a magnetic conductor 103 on the magnetic diaphragm 112, a voice coil 105 and a magnetic conductor A voice coil group composed of 106, a voice coil group composed of voice coil 110 and magnetizer 109; such as a voice coil group composed of voice coil 118 and magnetizer 119 under the ...

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Abstract

The invention relates to moving-iron earphones and particularly relates to double-layer-voice-coil-group moving-iron earphones. The double-layer-voice-coil-group moving-iron earphones comprise a magnetic voice diaphragm, voice coils, magnetic conductors and a shell, and are characterized in that the number of voice coil groups formed by the voice coils and the magnetic conductors is greater than 6, and all voice coil groups are uniformly distributed above and below the magnetic voice diaphragm in two layers. The voice coil groups are driven by voice frequency current so as to generate relatively-uniform magnetic fields at the upper and lower ends of the magnetic diaphragm, so that the overall stress of the surface of the magnetic voice diaphragm is uniform, and generated sound waves have the characteristics of little distortion, high dynamicity and sensitive response.

Description

technical field [0001] The invention relates to an earphone, in particular to a sounding device for a double-layer voice coil moving iron earphone. Background technique [0002] The current headphone equipment usually uses a magnet under the sound film to interact with a set of concentric voice coils that are energized. The voice coil drives the sound film to vibrate to generate sound waves. Due to the small contact area between the voice coil and the sound film, it is easy to generate distortion. I applied for the magnetic diaphragm of earphones in 2012, and the invention patent publication number is CN 103297899 A. I only made technical innovations on the magnetic diaphragm of earphones, but did not design the uniform magnetic field under the magnetic diaphragm. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned defects and provide a double-layer voice coil moving iron earphone. [0004] In order to achieve the above ...

Claims

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Application Information

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IPC IPC(8): H04R1/10
Inventor 不公告发明人
Owner 姜福文
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