WO2008136091A1 - 反発型磁気回路及びスピーカー装置 - Google Patents

反発型磁気回路及びスピーカー装置 Download PDF

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Publication number
WO2008136091A1
WO2008136091A1 PCT/JP2007/058822 JP2007058822W WO2008136091A1 WO 2008136091 A1 WO2008136091 A1 WO 2008136091A1 JP 2007058822 W JP2007058822 W JP 2007058822W WO 2008136091 A1 WO2008136091 A1 WO 2008136091A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnets
pole piece
top plate
repulsion
magnet
Prior art date
Application number
PCT/JP2007/058822
Other languages
English (en)
French (fr)
Inventor
Hayami Kondo
Koji Matsumoto
Yoshimi Kudo
Hiroyuki Dohi
Original Assignee
Pioneer Corporation
Tohoku Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation, Tohoku Pioneer Corporation filed Critical Pioneer Corporation
Priority to PCT/JP2007/058822 priority Critical patent/WO2008136091A1/ja
Priority to US12/596,928 priority patent/US20100128891A1/en
Priority to JP2009512824A priority patent/JP4876167B2/ja
Publication of WO2008136091A1 publication Critical patent/WO2008136091A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

磁石の蓄熱に起因した磁石の磁気特性の低下を抑止可能な反発型磁気回路を提供する。磁石と複数の磁石の各々とを同極同士が対向するように配置して構成される反発型磁気回路は、ヨーク、ポールピース及びトッププレートを備え、ヨークの上にはポールピースが配置され、ポールピースの上にはトッププレートが配置され、ヨークとポールピースの間には前記磁石が配置され、特に、ポールピースとトッププレートの間には前記複数の磁石が配置されている。これにより、前記複数の磁石のうちトッププレートに近い側に配置される磁石に対して、ボイスコイルから生じるジュール熱が輻射熱として伝わり難くなる。その結果、長時間に亘ってボイスコイルを駆動した際、前記輻射熱がポールピースに伝わり続けても、トッププレート側の磁石の温度が上昇し難くなる。よって、前記複数の磁石の各々が減磁するのを抑止できるので、それらの磁気特性が低下することを抑止できる。
PCT/JP2007/058822 2007-04-24 2007-04-24 反発型磁気回路及びスピーカー装置 WO2008136091A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2007/058822 WO2008136091A1 (ja) 2007-04-24 2007-04-24 反発型磁気回路及びスピーカー装置
US12/596,928 US20100128891A1 (en) 2007-04-24 2007-04-24 Repulsion-type magnetic circuit and speaker device
JP2009512824A JP4876167B2 (ja) 2007-04-24 2007-04-24 反発型磁気回路及びスピーカー装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/058822 WO2008136091A1 (ja) 2007-04-24 2007-04-24 反発型磁気回路及びスピーカー装置

Publications (1)

Publication Number Publication Date
WO2008136091A1 true WO2008136091A1 (ja) 2008-11-13

Family

ID=39943214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/058822 WO2008136091A1 (ja) 2007-04-24 2007-04-24 反発型磁気回路及びスピーカー装置

Country Status (3)

Country Link
US (1) US20100128891A1 (ja)
JP (1) JP4876167B2 (ja)
WO (1) WO2008136091A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108600920A (zh) * 2018-01-08 2018-09-28 深圳市韶音科技有限公司 一种骨传导扬声器
KR102252018B1 (ko) 2020-03-18 2021-05-14 주식회사 이엠텍 투웨이 리시버용 요크 조립체 및 이를 구비하는 투웨이 리시버

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123694U (ja) * 1991-04-25 1992-11-10 オンキヨー株式会社 スピーカ用磁気回路
JPH07193893A (ja) * 1993-12-25 1995-07-28 Minebea Co Ltd スピーカ及びその磁気回路
JP2001238282A (ja) * 2000-02-23 2001-08-31 Kenwood Corp イルミネーション付きスピーカ
JP2002262390A (ja) * 2001-03-06 2002-09-13 Pioneer Electronic Corp スピーカの磁気回路
JP2006060443A (ja) * 2004-08-19 2006-03-02 Pioneer Electronic Corp スピーカ装置及びスピーカ装置の放熱部材
JP2006340295A (ja) * 2005-06-06 2006-12-14 Pioneer Electronic Corp スピーカー装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5687248A (en) * 1996-05-02 1997-11-11 Industrial Technology Research Institute Light weight and low magnetic leakage loudspeaker
US5901235A (en) * 1997-09-24 1999-05-04 Eminent Technology, Inc. Enhanced efficiency planar transducers
US6934402B2 (en) * 2001-01-26 2005-08-23 American Technology Corporation Planar-magnetic speakers with secondary magnetic structure
JP2003174743A (ja) * 2001-12-05 2003-06-20 Toyota Motor Corp 回転電機
US20050041831A1 (en) * 2003-08-22 2005-02-24 Stiles Enrique M. Electromagnetic transducer motor structure with radial thermal extraction paths

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123694U (ja) * 1991-04-25 1992-11-10 オンキヨー株式会社 スピーカ用磁気回路
JPH07193893A (ja) * 1993-12-25 1995-07-28 Minebea Co Ltd スピーカ及びその磁気回路
JP2001238282A (ja) * 2000-02-23 2001-08-31 Kenwood Corp イルミネーション付きスピーカ
JP2002262390A (ja) * 2001-03-06 2002-09-13 Pioneer Electronic Corp スピーカの磁気回路
JP2006060443A (ja) * 2004-08-19 2006-03-02 Pioneer Electronic Corp スピーカ装置及びスピーカ装置の放熱部材
JP2006340295A (ja) * 2005-06-06 2006-12-14 Pioneer Electronic Corp スピーカー装置

Also Published As

Publication number Publication date
JPWO2008136091A1 (ja) 2010-07-29
US20100128891A1 (en) 2010-05-27
JP4876167B2 (ja) 2012-02-15

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