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Moving-magnet loudspeaker and method for manufacturing same

A loudspeaker and moving magnet technology, applied in the field of moving magnet loudspeakers and their manufacturing, can solve the problems of difficulty in realizing a compact and thin moving magnet loudspeaker, and reduce efficiency, so as to reduce inductance, improve efficiency, and maintain magnetic flux density. Effect

Inactive Publication Date: 2011-09-28
KIMURA SUSUMU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first problem: reduced efficiency
In particular, it is difficult to realize a compact and thin moving magnet speaker

Method used

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  • Moving-magnet loudspeaker and method for manufacturing same
  • Moving-magnet loudspeaker and method for manufacturing same
  • Moving-magnet loudspeaker and method for manufacturing same

Examples

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Embodiment Construction

[0059] Next, a moving magnet speaker 10 according to a first embodiment of the present invention will be described with reference to the drawings. For convenience of description, the arrow directions shown in the drawings are defined as front and rear, left and right, and up and down.

[0060] First, refer to figure 1 and figure 2 The structure of the moving magnet speaker 10 will be described. The moving magnet loudspeaker 10 described below is an example in which the present invention is applicable to a full-range speaker, that is, a full-range speaker, but the present invention is not limited thereto, and may also be applicable to a high-frequency range, that is, a high-frequency speaker, or to a low-frequency range, that is, a high-frequency speaker. woofer.

[0061] The moving magnet speaker 10 has an annular fixed support portion 20 and a disk-shaped vibrating portion 30 attached to the front side of the fixed support portion 20 . Furthermore, the shapes of the fixe...

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PUM

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Abstract

Provided is a thin moving-magnet loudspeaker in which a quantitative guideline has been established for the mass of a magnetic circuit, and increases in the inductance of a voice coil are suppressed while maintaining the magnetic flux density of a voice coil. The moving-magnet loudspeaker (10) is configured such that: a diaphragm (1) having a magnetic circuit consisting of a magnet (5) and a magnetic body (4) is made to vibrate so as to generate sound by means of the magnetic circuit according to the magnetic field generated by a voice coil (6) through which a sound current flows; and the total mass of the magnetic circuit is 0.5 to 2.0 times the total mass of an additional mass and the mass of the diaphragm (1). In addition, the voice coil (6) is divided into a plurality of portions so as to reduce the inductance thereof and prevent the reduction of the sound current in a high-pitched sound range.

Description

technical field [0001] The present invention relates to a moving magnet loudspeaker in an electric loudspeaker and a manufacturing method thereof. Background technique [0002] The standard structure of the above-mentioned electric loudspeaker is known as a moving coil loudspeaker, which fixes a magnetic circuit composed of a magnet and a choke iron to a frame, and installs a vibrating plate with a voice coil fixed so that it can vibrate relative to the frame and move towards the voice coil. Supplying audio current generates driving force, whereby the vibration plate vibrates relative to the magnet to output sound. [0003] In general, "efficiency" representing the ratio of supplied audio current to sound energy is known as an index representing speaker characteristics. The efficiency of the above-mentioned conventional dynamic speaker is explained as follows in, for example, Section 8.4.3 Efficiency of Non-Patent Document 1. That is, in the existing dynamic loudspeaker, l...

Claims

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Application Information

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IPC IPC(8): H04R31/00H04R11/02
CPCH04R11/02
Inventor 中井重之
Owner KIMURA SUSUMU
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