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Loudspeaker device

A loudspeaker and sound output technology, applied to microphones, frequency/direction characteristic devices, loudspeakers, etc., can solve the problems of spending more time and labor, increasing the number of parts, and increasing manufacturing costs, so as to reduce the number of parts and labor , The effect of reducing the number of parts and reducing the manufacturing cost

Inactive Publication Date: 2004-03-03
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, supporting the speaker unit stronger takes more time and labor
Also, in order to mechanically support the speaker unit, the number of parts increases
This will increase the manufacturing cost

Method used

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  • Loudspeaker device
  • Loudspeaker device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] figure 1 is a schematic diagram showing the outline of the speaker device 1 of the embodiment of the present invention. In this embodiment, a pair of dynamic type speaker units 2 and 3 of the same model are used. Frames 4 and 5 support diaphragms and magnetic circuits 6 and 7 within speaker units 2 and 3 . The vibrating plate is made of paper, synthetic resin, metal or combined materials, where they are combined with each other and form a conical shape. The edge portions of the vibrating plate are supported by frames 4 and 5 via portions called sides so that the vibrating plate reciprocates in its axial direction. The former of the speaker's voice coil meets the center of the conical diaphragm. The voice coil is wound by a bobbin on a portion located in the magnetic gap formed in the magnetic circuit 6 , 7 . The middle part of the bobbin is supported by frames 4 and 5 via what are called dampers. The magnetic flux generated by the permanent magnet is concentrated i...

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PUM

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Abstract

A speaker device has a pair of speaker units each including a magnetic circuit. The magnetic circuits are opposed and connected to each other by a binding member. Vibrations generated by the speaker units are canceled to each other so that the occurrence of unnecessary vibrations can be suppressed and the transient characteristic can be improved. Acoustic load members are arranged in the front portions of frames so that the resonance frequency can be lowered and a band of reproducing sound of low frequency can be expanded.

Description

technical field [0001] The present invention relates to a speaker device capable of reproducing sound with high sound quality. Background technique [0002] In a conventional speaker device, a diaphragm is electrically driven within a speaker unit. The vibration of the vibrating plate is converted into acoustic output. In a loudspeaker unit, the acoustic output is produced by a vibrating plate, wherein the vibrating plate is made into various shapes, such as cone, plate, dome, etc. In order to generate driving force for driving the vibrating plate, an electric type driving section is used. In said electrodynamic drive section, a magnetic circuit is used whose source of magnetic flux is a permanent magnet. In the magnetic circuit, magnetic flux is concentrated in a space called a magnetic gap, so that electromagnetic driving force can be generated in the voice coil within the magnetic gap. Inside the speaker unit, a frame supports the magnetic circuit, and the diaphragm i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/24H04R1/22H04R1/28
CPCH04R2499/13H04R1/227H04R2209/027H04R2201/021H04R7/24
Inventor 西川彰本岛显由井启之
Owner FUJITSU GENERAL LTD