WO2009090746A1 - Diaphragme pour haut-parleur et dispositif de haut-parleur - Google Patents

Diaphragme pour haut-parleur et dispositif de haut-parleur Download PDF

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Publication number
WO2009090746A1
WO2009090746A1 PCT/JP2008/050549 JP2008050549W WO2009090746A1 WO 2009090746 A1 WO2009090746 A1 WO 2009090746A1 JP 2008050549 W JP2008050549 W JP 2008050549W WO 2009090746 A1 WO2009090746 A1 WO 2009090746A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
density
density portion
speaker
low
Prior art date
Application number
PCT/JP2008/050549
Other languages
English (en)
Japanese (ja)
Inventor
Kazuharu Kawata
Yoshihiro Sato
Original Assignee
Pioneer Corporation
Mogami Denki Corporation
Victor Company Of Japan, Limited
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, Mogami Denki Corporation, Victor Company Of Japan, Limited filed Critical Pioneer Corporation
Priority to PCT/JP2008/050549 priority Critical patent/WO2009090746A1/fr
Priority to PCT/JP2008/053661 priority patent/WO2009090761A1/fr
Priority to CN2008801240791A priority patent/CN101919268A/zh
Priority to JP2009549949A priority patent/JPWO2009090761A1/ja
Publication of WO2009090746A1 publication Critical patent/WO2009090746A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Definitions

  • the speaker diaphragm is formed so that the density is gradually different from the low density region, the medium density portion, and the high density region along the circumferential direction of the diaphragm, so that the thickness of the diaphragm is substantially uniform.
  • the divided resonance cannot be sufficiently reduced.
  • a diaphragm capable of further reducing unnecessary vibration such as split resonance is desired.
  • the speaker device is used in various environments, and for example, it may be desired to radiate a reproduced sound having directivity in a predetermined direction.
  • the liquid 401 in which the fibers 40 that are the raw materials of the diaphragm 4 and water are mixed is put into the papermaking tank 201, and papermaking is performed while reducing the lower side of the wire mesh 22 of the papermaking tank 201 with a pump. .
  • a portion corresponding to the high density portion 41 of the diaphragm 4 is formed on the metal mesh 22.
  • FIGS. 4C and 4D after the mold 23 is removed, papermaking is performed again.
  • FIGS. 4 (E) and 4 (F) after paper making, the mold 23 is removed, the metal mesh 22 is pulled up, and the diaphragm 4 is taken out.
  • the diaphragm 4 is dried.
  • the present invention is not limited to the embodiment described above.
  • the single raw material which consists of fibers such as a wood pulp
  • it is not restricted to this form.
  • chemical fibers such as Kevlar fibers and inorganic fibers such as carbon fibers and glass fibers.
  • a large density difference can be provided between the high density portion 41 and the low density portion 42 by adjusting the diameter and depth of the net, the paper making time, and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne une structure relativement simple qui permet de réduire l'oscillation inutile telle que la résonance partagée, de réduire les pics et les creux dans la réponse de fréquence provoqués par la résonance partagée ou similaire, etc. Un diaphragme (4) d'un dispositif de haut-parleur (10) comprend une partie haute densité (41) et une partie basse densité (42). La partie haute densité (41) est formée de sorte à avoir une forme en saillie dans une direction presque orthogonale par rapport à la surface du diaphragme (4), et une partie étage (43) est formée à une limite entre la partie haute densité (41) et la partie basse densité (42).
PCT/JP2008/050549 2008-01-17 2008-01-17 Diaphragme pour haut-parleur et dispositif de haut-parleur WO2009090746A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2008/050549 WO2009090746A1 (fr) 2008-01-17 2008-01-17 Diaphragme pour haut-parleur et dispositif de haut-parleur
PCT/JP2008/053661 WO2009090761A1 (fr) 2008-01-17 2008-02-29 Diaphragme pour haut-parleur et dispositif de haut-parleur
CN2008801240791A CN101919268A (zh) 2008-01-17 2008-02-29 扬声器用振动板及扬声器装置
JP2009549949A JPWO2009090761A1 (ja) 2008-01-17 2008-02-29 スピーカ用振動板、およびスピーカ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/050549 WO2009090746A1 (fr) 2008-01-17 2008-01-17 Diaphragme pour haut-parleur et dispositif de haut-parleur

Publications (1)

Publication Number Publication Date
WO2009090746A1 true WO2009090746A1 (fr) 2009-07-23

Family

ID=40885156

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2008/050549 WO2009090746A1 (fr) 2008-01-17 2008-01-17 Diaphragme pour haut-parleur et dispositif de haut-parleur
PCT/JP2008/053661 WO2009090761A1 (fr) 2008-01-17 2008-02-29 Diaphragme pour haut-parleur et dispositif de haut-parleur

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/053661 WO2009090761A1 (fr) 2008-01-17 2008-02-29 Diaphragme pour haut-parleur et dispositif de haut-parleur

Country Status (3)

Country Link
JP (1) JPWO2009090761A1 (fr)
CN (1) CN101919268A (fr)
WO (2) WO2009090746A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340725A (zh) * 2011-07-28 2012-02-01 苏州上声电子有限公司 扬声器振动膜片及扬声器
WO2012129918A1 (fr) * 2011-03-28 2012-10-04 苏州上声电子有限公司 Membrane de vibration de haut-parleur et haut-parleur
GB2534859A (en) * 2015-01-30 2016-08-10 B&W Group Ltd Diaphragm for a loudspeaker drive unit or a microphone
WO2021247519A1 (fr) * 2020-06-03 2021-12-09 Acoustic Metamaterials LLC Diaphragme de haut-parleur en métamatériau
WO2022217226A1 (fr) * 2021-04-06 2022-10-13 Sonos, Inc. Membrane à rigidité variable pour un dispositif de lecture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014162411A1 (fr) * 2013-04-01 2014-10-09 パイオニア株式会社 Membrane pour dispositif de haut-parleur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895494A (ja) * 1981-12-01 1983-06-07 Matsushita Electric Ind Co Ltd スピーカ用振動板の製造方法
JPS60189199U (ja) * 1984-05-24 1985-12-14 ヤマハ株式会社 電気音響変換器用振動板
JPS63176096A (ja) * 1987-01-16 1988-07-20 Foster Denki Kk スピ−カ用振動板
JPH0681353B2 (ja) * 1987-04-20 1994-10-12 松下電器産業株式会社 スピ−カ用振動板
JPH0690495A (ja) * 1992-09-08 1994-03-29 Matsushita Electric Ind Co Ltd 動電型スピーカ
JP3947321B2 (ja) * 1999-03-04 2007-07-18 パイオニア株式会社 発泡成形体およびその成形方法およびそれによるスピーカ振動板
JP2002218585A (ja) * 2001-01-18 2002-08-02 Matsushita Electric Ind Co Ltd スピーカ
JP2005295354A (ja) * 2004-04-02 2005-10-20 Pioneer Electronic Corp 振動板、その製造方法、および、スピーカ装置
JP2007043522A (ja) * 2005-08-04 2007-02-15 Pioneer Electronic Corp スピーカー装置用振動板

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012129918A1 (fr) * 2011-03-28 2012-10-04 苏州上声电子有限公司 Membrane de vibration de haut-parleur et haut-parleur
CN102340725A (zh) * 2011-07-28 2012-02-01 苏州上声电子有限公司 扬声器振动膜片及扬声器
GB2534859A (en) * 2015-01-30 2016-08-10 B&W Group Ltd Diaphragm for a loudspeaker drive unit or a microphone
GB2534859B (en) * 2015-01-30 2020-06-10 B&W Group Ltd Diaphragm for a loudspeaker drive unit or a microphone
WO2021247519A1 (fr) * 2020-06-03 2021-12-09 Acoustic Metamaterials LLC Diaphragme de haut-parleur en métamatériau
US11289786B2 (en) * 2020-06-03 2022-03-29 Acoustic Metamaterials LLC Metamaterial loudspeaker diaphragm
WO2022217226A1 (fr) * 2021-04-06 2022-10-13 Sonos, Inc. Membrane à rigidité variable pour un dispositif de lecture

Also Published As

Publication number Publication date
WO2009090761A1 (fr) 2009-07-23
CN101919268A (zh) 2010-12-15
JPWO2009090761A1 (ja) 2011-05-26

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