JPS5571397A - Magnetic circuit for electric acoustic converter - Google Patents

Magnetic circuit for electric acoustic converter

Info

Publication number
JPS5571397A
JPS5571397A JP14545578A JP14545578A JPS5571397A JP S5571397 A JPS5571397 A JP S5571397A JP 14545578 A JP14545578 A JP 14545578A JP 14545578 A JP14545578 A JP 14545578A JP S5571397 A JPS5571397 A JP S5571397A
Authority
JP
Japan
Prior art keywords
magnetic
magnets
fixed
top plates
magnetic circuit
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
JP14545578A
Other languages
Japanese (ja)
Other versions
JPS58235B2 (en
Inventor
Katsumasa Sato
Shuji Saeki
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 JP14545578A priority Critical patent/JPS58235B2/en
Publication of JPS5571397A publication Critical patent/JPS5571397A/en
Publication of JPS58235B2 publication Critical patent/JPS58235B2/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; 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:To reduce considerably a leak magnetic flux by connecting two magnetic circuits so that magnetization directions of respective magnets may be opposite to each other and respective magnetic gaps may be arranged in parallel. CONSTITUTION:Magnets 2 and 2' are fixed to the bottom face of pot-shaped yokes 1 and 1' so that magnetization directions may be arrows a and a' directions. Disc- shaped top plates 3 and 3' are fixed to the upper face of magnets 2 and 2', and ring magnetic gaps 4 and 4' are formed between the outside circumference face of top plates 3 and 3' and the inside circumference face of yokes 1 and 1'. These two magnetic circuits are provided with through hole 5 at the center, and two magnetic circuits are fixed by fixing pin 6 so that top plates 3 and 3' may be brought into contact with each other. As the result, the leak magnetic flux can be reduced considerably.
JP14545578A 1978-11-25 1978-11-25 Magnetic circuit for electroacoustic transducer Expired JPS58235B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14545578A JPS58235B2 (en) 1978-11-25 1978-11-25 Magnetic circuit for electroacoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14545578A JPS58235B2 (en) 1978-11-25 1978-11-25 Magnetic circuit for electroacoustic transducer

Publications (2)

Publication Number Publication Date
JPS5571397A true JPS5571397A (en) 1980-05-29
JPS58235B2 JPS58235B2 (en) 1983-01-05

Family

ID=15385618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14545578A Expired JPS58235B2 (en) 1978-11-25 1978-11-25 Magnetic circuit for electroacoustic transducer

Country Status (1)

Country Link
JP (1) JPS58235B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1227701A1 (en) * 2000-08-24 2002-07-31 Matsushita Electric Industrial Co., Ltd. Speaker and magnetic circuit used for the speaker
JP2019176333A (en) * 2018-03-28 2019-10-10 パイオニア株式会社 Magnetic circuit of speaker, speaker, and movable body

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039846U (en) * 1983-08-29 1985-03-20 三菱電機株式会社 Air conditioner wind direction control plate support device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1227701A1 (en) * 2000-08-24 2002-07-31 Matsushita Electric Industrial Co., Ltd. Speaker and magnetic circuit used for the speaker
EP1227701A4 (en) * 2000-08-24 2005-12-07 Matsushita Electric Ind Co Ltd Speaker and magnetic circuit used for the speaker
JP2019176333A (en) * 2018-03-28 2019-10-10 パイオニア株式会社 Magnetic circuit of speaker, speaker, and movable body

Also Published As

Publication number Publication date
JPS58235B2 (en) 1983-01-05

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