JPS5272216A - Magnetic circuit for speakers - Google Patents

Magnetic circuit for speakers

Info

Publication number
JPS5272216A
JPS5272216A JP14739675A JP14739675A JPS5272216A JP S5272216 A JPS5272216 A JP S5272216A JP 14739675 A JP14739675 A JP 14739675A JP 14739675 A JP14739675 A JP 14739675A JP S5272216 A JPS5272216 A JP S5272216A
Authority
JP
Japan
Prior art keywords
speakers
magnetic circuit
magnetic flux
square plate
center pole
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.)
Granted
Application number
JP14739675A
Other languages
Japanese (ja)
Other versions
JPS5523517B2 (en
Inventor
Shinichi Yamazaki
Koichi Seki
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.)
TOUHOKU KINZOKU KOUGIYOU KK
Nippon Telegraph and Telephone Corp
Tokin Corp
Original Assignee
TOUHOKU KINZOKU KOUGIYOU KK
Nippon Telegraph and Telephone Corp
Tohoku Metal Industries 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 TOUHOKU KINZOKU KOUGIYOU KK, Nippon Telegraph and Telephone Corp, Tohoku Metal Industries Ltd filed Critical TOUHOKU KINZOKU KOUGIYOU KK
Priority to JP14739675A priority Critical patent/JPS5272216A/en
Publication of JPS5272216A publication Critical patent/JPS5272216A/en
Publication of JPS5523517B2 publication Critical patent/JPS5523517B2/ja
Granted 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Abstract

PURPOSE:To achieve the reduction in leak magnetic flux by covering the side and bottom faces in the lower part of a center pole with plural square plate-form magnets and receiving the magnetic flux from the center pole at the opening in the upper center of a box-form yoke containing therein these plural square plate-form magnts.
JP14739675A 1975-12-12 1975-12-12 Magnetic circuit for speakers Granted JPS5272216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14739675A JPS5272216A (en) 1975-12-12 1975-12-12 Magnetic circuit for speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14739675A JPS5272216A (en) 1975-12-12 1975-12-12 Magnetic circuit for speakers

Publications (2)

Publication Number Publication Date
JPS5272216A true JPS5272216A (en) 1977-06-16
JPS5523517B2 JPS5523517B2 (en) 1980-06-23

Family

ID=15429317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14739675A Granted JPS5272216A (en) 1975-12-12 1975-12-12 Magnetic circuit for speakers

Country Status (1)

Country Link
JP (1) JPS5272216A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531386U (en) * 1978-08-22 1980-02-29
WO2004034737A1 (en) * 2002-10-10 2004-04-22 New Transducers Limited Magnet assembly for loudspeakers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185878U (en) * 1982-06-04 1983-12-10 株式会社ケン National expressway map collection with checkpoints using photos and cassette tapes
JPS59142907U (en) * 1983-03-11 1984-09-25 藤掛　誠 Circulation device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275880A (en) * 1939-10-05 1942-03-10 Gen Electric Magnetic structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275880A (en) * 1939-10-05 1942-03-10 Gen Electric Magnetic structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531386U (en) * 1978-08-22 1980-02-29
WO2004034737A1 (en) * 2002-10-10 2004-04-22 New Transducers Limited Magnet assembly for loudspeakers
GB2408167A (en) * 2002-10-10 2005-05-18 New Transducers Ltd Magnet assembly for loudspeakers
GB2408167B (en) * 2002-10-10 2005-08-10 New Transducers Ltd Magnet assembly for loudspeakers
US7197155B2 (en) 2002-10-10 2007-03-27 New Transducers Limited Magnet assembly for loudspeakers

Also Published As

Publication number Publication date
JPS5523517B2 (en) 1980-06-23

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