JPS5718200A - Plane type loudspeaker - Google Patents

Plane type loudspeaker

Info

Publication number
JPS5718200A
JPS5718200A JP9274980A JP9274980A JPS5718200A JP S5718200 A JPS5718200 A JP S5718200A JP 9274980 A JP9274980 A JP 9274980A JP 9274980 A JP9274980 A JP 9274980A JP S5718200 A JPS5718200 A JP S5718200A
Authority
JP
Japan
Prior art keywords
center
making
adhere
stopper
magnetic circuit
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP9274980A
Other languages
Japanese (ja)
Inventor
Manabu Wakabayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9274980A priority Critical patent/JPS5718200A/en
Publication of JPS5718200A publication Critical patent/JPS5718200A/en
Pending legal-status Critical Current

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
    • H04R9/06—Loudspeakers
    • 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

Abstract

PURPOSE:To elevate the efficiency of a loudsepeaker by a simple constitution, by making a center stopper adhere to the center of a flat diaphragm, providing a subbobbin, etc. concentrically centering around the stopper, and moving a vibration system in the axial direction by a sub-speider which has been placed in the center of a magnetic circuit. CONSTITUTION:A vibration system is constituted by making a center stopper 20 adhere to the center of a flat diaphragm 1, placing a subbobbin 6, and a main bobbin 3 around which a voice coil has been wound, at the inside and the outside, respectively, concentrically centering around the stopper 20, and also making an edge 2 adhere to the outside circumferential part of the diaphragm 1 and suspension-connecting it with a frame 11. On the other hand, a magnetic circuit is constituted by making a ringlike top plate 8 and a yoke 10 adhere onto both the surfaces of a ringlike magnet 9, and also making the frame 11 adhere to the outside circumferential part of the hoke 10, and a piston is moved in the axial direction of the whole vibration system, together with the edge 2 by holding the bobbin 9 by a sub- spider 7 which has been placed in the center of the magnetic circuit.
JP9274980A 1980-07-09 1980-07-09 Plane type loudspeaker Pending JPS5718200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9274980A JPS5718200A (en) 1980-07-09 1980-07-09 Plane type loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9274980A JPS5718200A (en) 1980-07-09 1980-07-09 Plane type loudspeaker

Publications (1)

Publication Number Publication Date
JPS5718200A true JPS5718200A (en) 1982-01-29

Family

ID=14063058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9274980A Pending JPS5718200A (en) 1980-07-09 1980-07-09 Plane type loudspeaker

Country Status (1)

Country Link
JP (1) JPS5718200A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157388U (en) * 1983-04-05 1984-10-22
JPS59177295U (en) * 1983-05-13 1984-11-27
WO1997032451A1 (en) * 1996-02-29 1997-09-04 Matsushita Electric Industrial Co., Ltd. Loudspeaker unit
WO2009094047A1 (en) * 2008-01-24 2009-07-30 Sony Ericsson Mobile Communications Ab Dampening mechanism for a micro speaker
US20110243370A1 (en) * 2010-04-06 2011-10-06 Chao-Lang Wang Loudspeaker with magnetic elements fixedly provided on diaphragm
US8170268B2 (en) 2007-11-30 2012-05-01 Bang & Olufsen Icepower A/S Gi Electro-dynamic transducer with a slim form factor
WO2020070046A1 (en) * 2018-10-01 2020-04-09 Grawe & Schneider Gdbr Planar loudspeaker

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157388U (en) * 1983-04-05 1984-10-22
JPS59177295U (en) * 1983-05-13 1984-11-27
WO1997032451A1 (en) * 1996-02-29 1997-09-04 Matsushita Electric Industrial Co., Ltd. Loudspeaker unit
GB2325373A (en) * 1996-02-29 1998-11-18 Matsushita Electric Ind Co Ltd Loudspeaker unit
GB2325373B (en) * 1996-02-29 2000-08-16 Matsushita Electric Ind Co Ltd Loudspeaker unit
US8170268B2 (en) 2007-11-30 2012-05-01 Bang & Olufsen Icepower A/S Gi Electro-dynamic transducer with a slim form factor
WO2009094047A1 (en) * 2008-01-24 2009-07-30 Sony Ericsson Mobile Communications Ab Dampening mechanism for a micro speaker
US20110243370A1 (en) * 2010-04-06 2011-10-06 Chao-Lang Wang Loudspeaker with magnetic elements fixedly provided on diaphragm
US8462977B2 (en) * 2010-04-06 2013-06-11 Chao-Lang Wang Loudspeaker with magnetic elements fixedly provided on diaphragm
WO2020070046A1 (en) * 2018-10-01 2020-04-09 Grawe & Schneider Gdbr Planar loudspeaker
US11388517B2 (en) 2018-10-01 2022-07-12 Grawe & Schneider Gdbr Planar loudspeaker

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