Title:
MAGNETIC CIRCUIT FOR SPEAKER UNIT, AND SPEAKER UNIT
Document Type and Number:
WIPO Patent Application WO/2010/049990
Kind Code:
A1
Abstract:
A speaker unit has a diaphragm (2), a frame (3) that supports the diaphragm (2) with freedom to vibrate along the vibrating direction, and a drive section (4) that is provided on the frame (3) to give vibration to the diaphragm (2) through an sound signal. The drive section (4) includes a magnetic circuit (40) to form a magnetic gap (40G) along the direction different from the vibrating direction of the diaphragm (2), a voice coil support section (6) that has a voice coil (60) and vibrates along the magnetic gap (40G), and a vibration direction conversion section (7) to convert a direction of vibration of a voice coil support section (6) for transferring the direction-converted vibration to a diaphragm (2). On the magnetic circuit (40), a pair of magnetic gaps (40G, 40G) with different flux directions are formed in line along the vibrating direction of the voice coil support section (6), and the voice coil (60) supported by the voice coil support section (6) is disposed in a planar form to itinerate around the magnetic gaps (40G, 40G).
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Inventors:
HORIGOME MINORU (JP)
KOBAYASHI HIROYUKI (JP)
HIKICHI TOSHIHIRO (JP)
KOBAYASHI HIROYUKI (JP)
HIKICHI TOSHIHIRO (JP)
Application Number:
PCT/JP2008/069480
Publication Date:
May 06, 2010
Filing Date:
October 27, 2008
Export Citation:
Assignee:
PIONEER CORP (JP)
PIONEER TOHOKU CORP (JP)
HORIGOME MINORU (JP)
KOBAYASHI HIROYUKI (JP)
HIKICHI TOSHIHIRO (JP)
PIONEER TOHOKU CORP (JP)
HORIGOME MINORU (JP)
KOBAYASHI HIROYUKI (JP)
HIKICHI TOSHIHIRO (JP)
International Classes:
H04R9/02; H04R9/00
Foreign References:
| JP2005159409A | 2005-06-16 | |||
| JPS63250995A | 1988-10-18 |
Attorney, Agent or Firm:
EICHI Patent & Trademark Corp. et al. (JP)
Patent business corporation Wisdom international patent firm (JP)
Patent business corporation Wisdom international patent firm (JP)
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