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Magnetic driving mechanism improving low-frequency performance and high-frequency performance of balanced armature unit

A high-frequency performance and magnetic drive technology, applied in electrical components, sensors, etc., can solve problems such as low-frequency distortion and poor bass resolution, and achieve the effect of improving bass performance, reducing magnetic flux density, and perfect high-frequency performance

Active Publication Date: 2015-01-14
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, such as severe low frequency distortion and poor bass resolution, and provide a magnetic drive mechanism that improves the low and high frequency performance of the moving iron unit. The technical solution of the present invention effectively suppresses the 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 a certain compensation effect on the frequency response of the high frequency band, making the high frequency performance of the moving iron unit more perfect

Method used

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  • Magnetic driving mechanism improving low-frequency performance and high-frequency performance of balanced armature unit
  • Magnetic driving mechanism improving low-frequency performance and high-frequency performance of balanced armature unit
  • Magnetic driving mechanism improving low-frequency performance and high-frequency performance of balanced armature unit

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Experimental program
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Effect test

Embodiment 1

[0021] combine figure 1 As shown, a magnetic drive mechanism for improving the low and high frequency performance of the moving iron unit in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4, an adjustment coil 6 and a control chip 7, and the balance motor The pivot 4 passes through the middle of the yoke 1, and both ends protrude from 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 a large amount of magnetic flux leakage, in this embodiment The magnet 2 is fixed on the inner side of the yoke 1, and the fixing method can be glued or laser welded; the induction coil 3 is arranged at one end of the balance armature 4, and the adjustment coil 6 is arranged at the other end of the balance armature 4, and the induction coil 3 and the suppression coil 6 are glued and fixed with the yoke 1 respectively, and the number of turns of the adjustment coil 6 is small...

Embodiment 2

[0023] combine figure 2 As shown, a magnetic drive mechanism for improving the low and high frequency performance of the moving iron unit in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4, an adjustment coil 6 and a control chip 7, and the balance motor The pivot 4 passes through the middle of the yoke 1, and both ends protrude from 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 a large amount of magnetic flux leakage, in this embodiment The magnet 2 is fixed on the inner side of the yoke 1, and the fixing method can be glued or laser welded; the induction coil 3 is arranged at one end of the balance armature 4, and the adjustment coil 6 is arranged between the yoke 1 and the induction coil 3, and Adjusting coil 6 is glued and fixed with induction coil 3 and yoke 1 respectively, and the number of turns of adjusting coil 6 is smaller than the number ...

Embodiment 3

[0025] combine image 3 As shown, a magnetic drive mechanism for improving the low and high frequency performance of the moving iron unit in this embodiment includes a yoke 1, a magnet 2, an induction coil 3, a balance armature 4, an adjustment coil 6 and a control chip 7, and the balance motor The pivot 4 passes through the middle of the yoke 1, and both ends protrude from 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 a large amount of magnetic flux leakage, in this embodiment The magnet 2 is fixed on the inner side of the yoke 1, and the fixing method can be glued or laser welded; the induction coil 3 is arranged at one end of the balance armature 4, and the adjustment coil 6 is arranged at the rear end of the induction coil 3, and the induction coil 3 The yoke 1 and the adjustment coil 6 are respectively glued and fixed, and the number of turns of the adjustment coil 6 is smaller than th...

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Abstract

The invention discloses a magnetic driving mechanism improving the low-frequency performance and the high-frequency performance of a balanced armature unit and belongs to the field of electroacoustical technologies. The magnetic driving mechanism improving the low-frequency performance and the high-frequency performance of the balanced armature unit comprises a yoke, a magnet, an induction coil, a balanced armature, an adjusting coil and a control chip. The induction coil is arranged at one end of the balanced armature. The adjusting coil is arranged at the other end of the balanced armature, or the adjusting coil is arranged between the yoke and the induction coil, or the adjusting coil is arranged at the rear end of the induction coil. The adjusting coil and the induction coil are connected with the control chip. The adjusting coil generates an induced magnetic field at a low frequency band, wherein the direction of the induced magnetic field is opposite to that of the induction coil. The adjusting coil generates an induced magnetic field at medium and high frequency bands, wherein the direction of the induced magnetic field is identical with that of the induction coil. By the adoption of the magnetic driving mechanism improving the low-frequency performance and the high-frequency performance of the balanced armature unit, distortion of the balanced armature unit at a low frequency band is effectively restrained, the ability to analyze bass is improved, and therefore the bass performance of the balanced armature unit is improved; a certain compensation function is achieved on the frequency response at the intermediate and high frequency bands, and therefore the high-frequency performance of the balanced armature unit is perfected.

Description

technical field [0001] The invention relates to a magnetic driving mechanism of a moving iron unit, more specifically, to a magnetic driving mechanism for improving the low and high frequency performance of the moving iron unit. 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 relati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R11/00
Inventor 魏鹏何新阳王兴
Owner CHANGZHOU AMT