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Earphone magnetism vibrating film

A magnetic and earphone technology, which is applied in the field of sound film of earphones, can solve the problems of small contact area and distortion of the diaphragm, and achieve the effect of large dynamic range and small sound wave distortion

Inactive Publication Date: 2013-09-11
姜福文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, moving iron earphone equipment usually uses a single magnet under the diaphragm of the sound film to interact with a group of concentric voice coils. The audio current passes through the voice coil to generate a changing magnetic field and interacts with a single magnet under the diaphragm of the sound film to drive the diaphragm Vibration produces sound waves. Since the contact area between a single magnet and the sound film is small, it is easy to produce distortion

Method used

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  • Earphone magnetism vibrating film
  • Earphone magnetism vibrating film
  • Earphone magnetism vibrating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1 and Figure II As shown, the diaphragm 1 is the vibrating part of the sound diaphragm 4 except that it is fixed in the sound diaphragm support 3 . The particulate permanent magnet 2 on the surface of the vibrating membrane 1 is a cylindrical particulate magnet, or a thin film permanent magnet. The volume of the particulate permanent magnet 2 is less than or equal to 1 cubic millimeter. The magnetic pole directions of the particulate permanent magnet 2 on the vibrating membrane 1 are the same. The permanent magnets 2 are evenly distributed on the diaphragm 1 , and the particulate permanent magnets 2 provide a relatively uniform magnetic field for the diaphragm 1 .

Embodiment 2

[0021] Such as Figure three As shown, the sound membrane 31 is the part where the sound membrane 34 is fixed within the sound membrane support 33 and can vibrate. The magnetic pole directions of the particle permanent magnets 32 on the surface of the diaphragm 31 are the same, and the particle permanent magnets 32 are evenly distributed on the diaphragm 31 .

[0022] When the audio current passes through the voice coil 35, the generated changing magnetic field interacts with the magnetic field of the particle permanent magnet 32 ​​on the diaphragm 31 through the magnetic conductor 36, and the particle permanent magnet 32 ​​drives the diaphragm 31 of the sound film 34 to vibrate to generate sound waves.

[0023] The permanent magnet particle of the present invention is, the permanent magnet particle of permanent magnet, and permanent magnet can use: Alnico permanent magnet material, iron chromium cobalt permanent magnet alloy, permanent magnet ferrite material, rare earth perm...

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Abstract

The invention provides an earphone sound film and particularly relates to an earphone magnetism vibrating film which comprises a vibrating film body of a sound film and particle permanent magnets. The earphone magnetism vibrating film is characterized in that a plurality of particle permanent magnets which are the same in polarity directions are paved on the vibrating film body of the sound film. A magnetic field generated by audio currents reacts with a relative even magnetic field provided by the particle permanent magnets on the vibrating film body of the sound film, the sound film is driven to vibrate evenly in a whole mode, generated sound wave distortion is low, dynamic is high, and reaction is sensitive.

Description

technical field [0001] The invention relates to a sound membrane of an earphone, in particular to a magnetic diaphragm of an earphone. Background technique [0002] At present, moving iron earphone equipment usually uses a single magnet under the diaphragm of the sound film to interact with a group of concentric voice coils. The audio current passes through the voice coil to generate a changing magnetic field and interacts with a single magnet under the diaphragm of the sound film to drive the diaphragm Vibration produces sound waves, and due to the small contact area between a single magnet and the diaphragm of the sound film, distortion is easily generated. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned defects, and provide a magnetic diaphragm of an earphone with uniform stress on the diaphragm. [0004] In order to achieve the above object, the present invention adopts the following technical solution, providing...

Claims

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Application Information

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IPC IPC(8): H04R7/02
Inventor 姜福文
Owner 姜福文
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