JPS57203398A - Electrodinamic speaker - Google Patents

Electrodinamic speaker

Info

Publication number
JPS57203398A
JPS57203398A JP8907381A JP8907381A JPS57203398A JP S57203398 A JPS57203398 A JP S57203398A JP 8907381 A JP8907381 A JP 8907381A JP 8907381 A JP8907381 A JP 8907381A JP S57203398 A JPS57203398 A JP S57203398A
Authority
JP
Japan
Prior art keywords
diaphragm
magnet
speaker
magnetic
thickness
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
JP8907381A
Other languages
Japanese (ja)
Inventor
Hideaki Inoue
Kazuhide Sato
Shuji Saeki
Seiichi Ishikawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8907381A priority Critical patent/JPS57203398A/en
Publication of JPS57203398A publication Critical patent/JPS57203398A/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

Abstract

PURPOSE:To decrease the thickness of a speaker without lowering the density of the magnetic flux within a magnetic gap which forms a magnetic circuit, by supporting a diaphragm with a damper in a recessed part forming the magnetic circuit. CONSTITUTION:For a magnetic circuit, the upper and lower plates 7 and 10 are attached close to the upper and lower surfaces of a magnet 8 having a larger diameter than a diaphragm 1 and a magnet 9 which is positioned at the inner circumference side of the magnet 8 with the smaller thickness than the magnet 8, and a recessed part 2 is provided on the upper surface of the plate 7. In this connection, a voice coil bobbin 5 of the diaphragm 1 is shortened, and the diaphragm 1 is set close to the plate 7 and can be supported with a damper 6 within a recessed part 12. Thus the diaphragm 1 can be supported by the damper 6, a voice coil 4, etc. with a sufficient margin of amplitude. As a result, the overall thickness can be decresed for a speaker. While the magnet 8 has a larger diameter than the diaphragm 1, and accordingly the thickness of the magnet 8 itself can be increased. Thus no reduction is cauased to the density of the magnetic flux within a magnetic gap 11 which forms a magnetic circuit.
JP8907381A 1981-06-10 1981-06-10 Electrodinamic speaker Pending JPS57203398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8907381A JPS57203398A (en) 1981-06-10 1981-06-10 Electrodinamic speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8907381A JPS57203398A (en) 1981-06-10 1981-06-10 Electrodinamic speaker

Publications (1)

Publication Number Publication Date
JPS57203398A true JPS57203398A (en) 1982-12-13

Family

ID=13960670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8907381A Pending JPS57203398A (en) 1981-06-10 1981-06-10 Electrodinamic speaker

Country Status (1)

Country Link
JP (1) JPS57203398A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02281900A (en) * 1989-04-24 1990-11-19 Matsushita Electric Ind Co Ltd Magnetic circuit for loudspeaker
US7664283B2 (en) 2004-10-18 2010-02-16 Andrea Chiesi Devices and transducers with cavity resonator to control 3-D characteristics/harmonic frequencies for all sound/sonic waves
JP2013009036A (en) * 2011-06-22 2013-01-10 Jvc Kenwood Corp Outer magnet type magnetic circuit and dynamic speaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622400U (en) * 1979-07-31 1981-02-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5622400U (en) * 1979-07-31 1981-02-27

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02281900A (en) * 1989-04-24 1990-11-19 Matsushita Electric Ind Co Ltd Magnetic circuit for loudspeaker
US7664283B2 (en) 2004-10-18 2010-02-16 Andrea Chiesi Devices and transducers with cavity resonator to control 3-D characteristics/harmonic frequencies for all sound/sonic waves
EP2265037A2 (en) 2004-10-18 2010-12-22 Daniele Ramenzoni Devices and transducers with cavity resonator to control 3-d characteristics/harmonic frequencies for all sound/sonic waves
JP2013009036A (en) * 2011-06-22 2013-01-10 Jvc Kenwood Corp Outer magnet type magnetic circuit and dynamic speaker

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