JPS54119228A - Thin type speaker - Google Patents

Thin type speaker

Info

Publication number
JPS54119228A
JPS54119228A JP2681978A JP2681978A JPS54119228A JP S54119228 A JPS54119228 A JP S54119228A JP 2681978 A JP2681978 A JP 2681978A JP 2681978 A JP2681978 A JP 2681978A JP S54119228 A JPS54119228 A JP S54119228A
Authority
JP
Japan
Prior art keywords
diaphragm
damper
thin type
type speaker
voice coil
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
JP2681978A
Other languages
Japanese (ja)
Inventor
Hiroo Nomura
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP2681978A priority Critical patent/JPS54119228A/en
Publication of JPS54119228A publication Critical patent/JPS54119228A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details

Abstract

PURPOSE:To stabilize the frequency characteristic and eliminate distortion, in a thin type speaker for procketable acoustic device, by holding the voice coil in an exact position by using a special damper, and providing the diaphragm with an adequate damping effect. CONSTITUTION:One end of a damper member 8 having an elasticity like rubber is secured on a pole 7 of a magnetic circuit 6, and the other end thereof is coupled with the central part of a diaphragm 9. Therefore, a special space for damper is not needed, and abnormal resonance or fluctuations of the diaphragm 9 may be restricted by the accurate position holding of voice coil 10 and adequate vibration restriction in the middle of the diaphragm 9, so that the instability of the frequency characteristic and occurrence of distortion may be prevented. Besides, since rubber material is used as the damper, the long-period stability is excellent, the production cost is reduced, and the process time is shortened.
JP2681978A 1978-03-09 1978-03-09 Thin type speaker Pending JPS54119228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2681978A JPS54119228A (en) 1978-03-09 1978-03-09 Thin type speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2681978A JPS54119228A (en) 1978-03-09 1978-03-09 Thin type speaker

Publications (1)

Publication Number Publication Date
JPS54119228A true JPS54119228A (en) 1979-09-17

Family

ID=12203876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2681978A Pending JPS54119228A (en) 1978-03-09 1978-03-09 Thin type speaker

Country Status (1)

Country Link
JP (1) JPS54119228A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59177290U (en) * 1983-05-16 1984-11-27
JP2006129106A (en) * 2004-10-29 2006-05-18 Foster Electric Co Ltd Speaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59177290U (en) * 1983-05-16 1984-11-27
JPS6342792Y2 (en) * 1983-05-16 1988-11-09
JP2006129106A (en) * 2004-10-29 2006-05-18 Foster Electric Co Ltd Speaker
JP4694176B2 (en) * 2004-10-29 2011-06-08 フォスター電機株式会社 Speaker

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