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A Magnetic Driving Mechanism of Moving Iron Unit with Reduced Low Frequency Distortion

A magnetic drive, low-frequency distortion technology, applied in the direction of electrical components, sensors, etc., can solve the problems of poor bass resolution, low-frequency distortion, etc., to achieve the effect of improving bass performance, suppressing distortion, and meeting auditory needs

Active Publication Date: 2017-11-28
CHANGZHOU AMT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing moving iron unit with serious low-frequency distortion and poor bass resolution, and to provide a magnetic drive mechanism for the moving iron unit that reduces low-frequency distortion. The distortion of the unit in the low frequency band improves the analysis ability of the bass, thereby improving the bass performance of the moving iron unit; at the same time, it has little effect on the mid and high frequency advantages of the moving iron unit, which meets the auditory needs of consumers

Method used

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  • A Magnetic Driving Mechanism of Moving Iron Unit with Reduced Low Frequency Distortion
  • A Magnetic Driving Mechanism of Moving Iron Unit with Reduced Low Frequency Distortion
  • A Magnetic Driving Mechanism of Moving Iron Unit with Reduced Low Frequency Distortion

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Effect test

Embodiment 1

[0022] combine figure 1 As shown, a moving iron unit magnetic drive mechanism for reducing low-frequency distortion in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4 and a suppression coil 6, and the balance armature 4 passes through the yoke 1, and both ends extend out of the yoke 1, the magnet 2 is symmetrically arranged on both sides of the balance armature 4, and fixed on the yoke 1, in order to avoid magnetic flux leakage, the magnet 2 in this embodiment is fixed on the yoke 1, its fixing method can be glued or laser welding; the induction coil 3 is arranged at one end of the balance armature 4, and the suppression coil 6 is arranged at the other end of the balance armature 4, and the induction coil 3 and the suppression coil 6 are respectively connected with The yoke 1 is glued and fixed, and the number of turns of the suppression coil 6 is smaller than the number of turns of the induction coil 3; the end of the balance armature...

Embodiment 2

[0024] combine figure 2 As shown, a moving iron unit magnetic drive mechanism for reducing low-frequency distortion in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4 and a suppression coil 6, and the balance armature 4 passes through the yoke 1, and both ends extend out of the yoke 1, the magnet 2 is symmetrically arranged on both sides of the balance armature 4, and fixed on the yoke 1, in order to avoid magnetic flux leakage, the magnet 2 in this embodiment is fixed on the yoke 1, its fixing method can be glued or laser welded; the induction coil 3 is set at one end of the balance armature 4, the suppression coil 6 is set between the yoke 1 and the induction coil 3, and the suppression coil 6 is respectively connected to the induction coil 3. The yoke 1 is glued and fixed, and the number of turns of the suppression coil 6 is smaller than the number of turns of the induction coil 3; the end of the balance armature 4 away from the ind...

Embodiment 3

[0026] combine image 3 As shown, a moving iron unit magnetic drive mechanism for reducing low-frequency distortion in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4 and a suppression coil 6, and the balance armature 4 passes through the yoke 1, and both ends extend out of the yoke 1, the magnet 2 is symmetrically arranged on both sides of the balance armature 4, and fixed on the yoke 1, in order to avoid magnetic flux leakage, the magnet 2 in this embodiment is fixed on the yoke 1, its fixing method can be glued or laser welding; the induction coil 3 is arranged at one end of the balance armature 4, and the suppression coil 6 is arranged at the rear end of the induction coil 3, and the induction coil 3 is respectively connected with the yoke 1, the suppression The coil 6 is glued and fixed, and the number of turns of the suppression coil 6 is smaller than the number of turns of the induction coil 3; the end of the balance armature 4 a...

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Abstract

The invention discloses a magnetic drive mechanism of a moving iron unit that reduces low-frequency distortion, and belongs to the technical field of electroacoustics. The invention includes a yoke, a magnet, an induction coil and a balance armature, and also includes a suppression coil. The balance armature passes through the middle of the yoke, and the magnets are arranged symmetrically on both sides of the balance armature and fixed on On the yoke; the induction coil is arranged at one end of the balance armature, and the suppression coil is arranged at the other end of the balance armature; or, the suppression coil is arranged between the yoke and the induction coil; or, The suppression coil is arranged at the rear end of the induction coil; the suppression coil generates an induction magnetic field opposite to the induction coil. The present invention effectively suppresses the distortion of the moving iron unit in the low frequency band, improves the analysis ability of the bass, thereby improving the bass performance of the moving iron unit; at the same time, it has almost no influence on the medium and high frequency advantages of the moving iron unit, and satisfies the The auditory needs of consumers.

Description

technical field [0001] The invention relates to a magnetic driving mechanism of a moving iron unit, more specifically, to a magnetic driving mechanism of a moving iron unit that reduces low-frequency distortion. Background technique [0002] The moving iron unit has the advantages of good sound insulation, small size, and high sensitivity, and has been widely used in headphones and speakers. Compared with the moving coil unit, the frequency response curve of the moving iron unit is more stable, and the earphones using the moving iron unit are more helpful for hearing protection, but the low frequency performance of the moving iron unit is not as good as the low frequency performance of the moving coil unit. The main reason is Because the electromagnetic conversion efficiency of the magnetic drive mechanism of the moving iron unit is relatively high, and the mechanical strength of the balanced armature is relatively high, and the resonance frequency is relatively high, so the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R9/06H04R9/02
Inventor 魏鹏何新阳陈澄
Owner CHANGZHOU AMT
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