JPS54118816A - Thin type speaker - Google Patents

Thin type speaker

Info

Publication number
JPS54118816A
JPS54118816A JP2610878A JP2610878A JPS54118816A JP S54118816 A JPS54118816 A JP S54118816A JP 2610878 A JP2610878 A JP 2610878A JP 2610878 A JP2610878 A JP 2610878A JP S54118816 A JPS54118816 A JP S54118816A
Authority
JP
Japan
Prior art keywords
magnets
permanent magnets
yoke
same plane
disposed
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
JP2610878A
Other languages
Japanese (ja)
Inventor
Kazuo Ito
Original Assignee
Seiko Instr & Electronics 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 Seiko Instr & Electronics Ltd filed Critical Seiko Instr & Electronics Ltd
Priority to JP2610878A priority Critical patent/JPS54118816A/en
Publication of JPS54118816A publication Critical patent/JPS54118816A/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
    • H04R9/025Magnetic circuit

Abstract

PURPOSE:To obtain a speaker of a reduced depth size without impairing acoustic effect by interposing voice coils between permanent magnets and disposing both in the same plane position. CONSTITUTION:For example, three pieces of voice coil parts 11 are of approximately plate form and one side thereof is bonded to the approximate central part of a cone part 12. The outside circumferential end part of the cone is supported to a frame 13 through edge 14. Four permanent magnets 15 are disposed so as to sandwich the coil parts and the respective magnetic poles of the four magnets 15 are constituted in series, the magnets at the end parts being coupled by a yoke 16 thereby forming a closed magnetic path. All the magnets are fixed and positioned to the yoke by means of a non-magnetic member 17. In this way, the voice coils and permanent magnets may be disposed on the same plane and the depth sizes of the two speakers may be reduced.
JP2610878A 1978-03-08 1978-03-08 Thin type speaker Pending JPS54118816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2610878A JPS54118816A (en) 1978-03-08 1978-03-08 Thin type speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2610878A JPS54118816A (en) 1978-03-08 1978-03-08 Thin type speaker

Publications (1)

Publication Number Publication Date
JPS54118816A true JPS54118816A (en) 1979-09-14

Family

ID=12184387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2610878A Pending JPS54118816A (en) 1978-03-08 1978-03-08 Thin type speaker

Country Status (1)

Country Link
JP (1) JPS54118816A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903308A (en) * 1988-02-10 1990-02-20 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US5198624A (en) * 1988-02-10 1993-03-30 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
JP2021532706A (en) * 2018-08-07 2021-11-25 永春 ▲張▼ Speaker unit and speaker device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903308A (en) * 1988-02-10 1990-02-20 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US5198624A (en) * 1988-02-10 1993-03-30 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
JP2021532706A (en) * 2018-08-07 2021-11-25 永春 ▲張▼ Speaker unit and speaker device

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