JPS5646399A - Moving magnet type speaker - Google Patents

Moving magnet type speaker

Info

Publication number
JPS5646399A
JPS5646399A JP12088779A JP12088779A JPS5646399A JP S5646399 A JPS5646399 A JP S5646399A JP 12088779 A JP12088779 A JP 12088779A JP 12088779 A JP12088779 A JP 12088779A JP S5646399 A JPS5646399 A JP S5646399A
Authority
JP
Japan
Prior art keywords
core
moving magnet
coil
shape
magnetic
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
JP12088779A
Other languages
Japanese (ja)
Other versions
JPS592240B2 (en
Inventor
Kazuo Noda
Masayasu Iwabuchi
Eiichi Nakamura
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.)
FOSTER DENKI KK
Foster Electric Co Ltd
Original Assignee
FOSTER DENKI KK
Foster Electric 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 FOSTER DENKI KK, Foster Electric Co Ltd filed Critical FOSTER DENKI KK
Priority to JP12088779A priority Critical patent/JPS592240B2/en
Publication of JPS5646399A publication Critical patent/JPS5646399A/en
Publication of JPS592240B2 publication Critical patent/JPS592240B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To improve the heat dissipation of the coil and to prevent the open wire of leads, by making small the magnetic circuit through the combination of moving magnet locating the cone in oscillation free, to the core having special shape coil. CONSTITUTION:The entire core 10 of moving magnet type speaker is almost formed in bobbin shape, the sectional area is made almost to I-shape, and it is fixed to a suitable frame. The ring shape groove 11 is formed around the core 10, and the magnetic legs in flange shape are formed at the both ends of the core 10 with the groove 11, and the exciting coil 12 is wound in the groove 11 so that the magnetic legs upper and lower can be magnetized to different poles. Further, the projection 13 is formed at the inner tip of the magnetic legs to improve the magnetic flux flowing to the magnetic circuit. Further, the moving magnet 14 high in the coercive force and light in weight is located around the core 10, and this moving magnet 14 is opposed with slight gap upper and lower to the core 10 in oscillation free. Further, the magnetic circuit is made small in size to improve the heat dissipation of the coil 12 and to prevent the open wire of the leads.
JP12088779A 1979-09-21 1979-09-21 Movable magnet speaker Expired JPS592240B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12088779A JPS592240B2 (en) 1979-09-21 1979-09-21 Movable magnet speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12088779A JPS592240B2 (en) 1979-09-21 1979-09-21 Movable magnet speaker

Publications (2)

Publication Number Publication Date
JPS5646399A true JPS5646399A (en) 1981-04-27
JPS592240B2 JPS592240B2 (en) 1984-01-17

Family

ID=14797429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12088779A Expired JPS592240B2 (en) 1979-09-21 1979-09-21 Movable magnet speaker

Country Status (1)

Country Link
JP (1) JPS592240B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007506332A (en) * 2003-09-16 2007-03-15 コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． High efficiency audio converter
ITFI20100050A1 (en) * 2010-03-25 2011-09-26 Claudio Lastrucci "ELECTRO-MECHANICAL CONVERSION SYSTEM WITH MOBILE MAGNET; ACOUSTIC DIFFUSER INCLUDING THE SYSTEM AND A MOBILE ORGAN GENERATING ACOUSTIC WAVES"

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007506332A (en) * 2003-09-16 2007-03-15 コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． High efficiency audio converter
ITFI20100050A1 (en) * 2010-03-25 2011-09-26 Claudio Lastrucci "ELECTRO-MECHANICAL CONVERSION SYSTEM WITH MOBILE MAGNET; ACOUSTIC DIFFUSER INCLUDING THE SYSTEM AND A MOBILE ORGAN GENERATING ACOUSTIC WAVES"
WO2011125083A1 (en) * 2010-03-25 2011-10-13 Claudio Lastrucci Electromechanical conversion system with moving magnets; acoustic diffuser comprising said system and a moving member that generates sound waves
CN102844972A (en) * 2010-03-25 2012-12-26 克劳迪奥·拉斯特鲁奇 Electromechanical transduction system having movable magnet; sound diffuser comprising said system and a movable member generating sound waves
US8861776B2 (en) 2010-03-25 2014-10-14 Claudio Lastrucci Electromechanical conversion system with moving magnets; acoustic diffuser comprising said system and a moving member that generates sound waves

Also Published As

Publication number Publication date
JPS592240B2 (en) 1984-01-17

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