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Magnetic circuit for speaker device and speaker device

A speaker and circuit technology, applied in the direction of sensors, electrical components, etc., can solve the problems of increased thickness of magnetic circuits and impossibility of thinning

Inactive Publication Date: 2011-08-10
PIONEER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As in the conventional method, only by laying down the voice coil bobbin of the cylinder in a direction different from the vibration direction of the diaphragm, it will only increase the thickness of the magnetic circuit and it will not be possible to achieve thinning

Method used

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  • Magnetic circuit for speaker device and speaker device
  • Magnetic circuit for speaker device and speaker device
  • Magnetic circuit for speaker device and speaker device

Examples

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Embodiment Construction

[0039] The magnetic circuit for a loudspeaker according to the embodiment of the present invention is used in a loudspeaker device that transmits the vibration of a voice coil supporting portion that supports a voice coil wound in a planar shape to a diaphragm through a rigid vibration direction changing portion, and the The voice coil support part vibrates planarly, wherein a pair of magnetic gaps having different magnetic flux directions are arranged side by side along the vibration direction of the voice coil support part.

[0040] According to this, since the pair of magnetic gaps with different magnetic flux directions are arranged side by side along the vibration direction of the voice coil supporting part, if the audio current flows through the voice coil wound in a planar shape, the pair of magnetic gaps will be detoured. Where this voice coil is placed, Lorentz force along the vibration direction acts on the voice coil. Thereby, the voice coil supporting part vibrates...

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PUM

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Abstract

A speaker device includes a diaphragm (2), frame (3) vibratably supporting the diaphragm (2) in the vibration direction, and a driving part (4) provided at the frame (3), applying vibration to the diaphragm (2) in response to an audio signal. The driving part (4) includes a magnetic circuit (40) forming a magnetic gap (40G) in a different direction in respect with the vibration direction of the diaphragm (2), a voice coil support part (6) having a voice coil (60) and vibrating along the magnetic gap (40G), and a vibration direction converter part (7) direction converting the vibration of the voice coil support part (6) and transmitting the vibration to the diaphragm (2). The magnetic circuit (40) includes a pair of magnetic gaps (40G, 40G) having different directions of magnetic flux. The pair of magnetic gaps (40G,40G) are arranged side by side in the vibration direction of the voice coil support part (6) and the voice coil (60) supported by the voice coil support part (6) is planarly arranged so as to itinerate in the pair of magnetic gaps (40G, 40G).

Description

technical field [0001] The invention relates to a magnetic circuit for a loudspeaker device and a loudspeaker device. Background technique [0002] As a general speaker device, a powered speaker device is known (for example, refer to Patent Document 1). The dynamic speaker device such as figure 1 As shown, it includes a frame 3J, a conical diaphragm 21J, an edge 4J supporting the diaphragm 21J on the frame 3J, a voice coil bobbin 610J joined to the inner peripheral portion of the diaphragm 21J, and a frame 3J supporting the voice coil bobbin 610J. Damper 7J, voice coil 611J wound on voice coil bobbin 610J, yoke 51J, magnet 52J, thin plate 53J, and a magnetic circuit that forms a magnetic gap in which voice coil 611J is disposed. In this speaker device, when an audio signal is input to the voice coil 611J, the voice coil bobbin 610J vibrates by the Lorentz force generated in the voice coil 611J in the magnetic gap, and the vibration plate 21J is driven by the vibration. ...

Claims

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Application Information

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IPC IPC(8): H04R9/02H04R9/00
CPCH04R9/06
Inventor 堀米实小林博之引地俊博
Owner PIONEER CORP