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JPS5516504A - Thin dynamic pronouncing body - Google Patents

Thin dynamic pronouncing body

Info

Publication number
JPS5516504A
JPS5516504A JP8770778A JP8770778A JPS5516504A JP S5516504 A JPS5516504 A JP S5516504A JP 8770778 A JP8770778 A JP 8770778A JP 8770778 A JP8770778 A JP 8770778A JP S5516504 A JPS5516504 A JP S5516504A
Authority
JP
Japan
Prior art keywords
permanent magnet
pronouncing
voice coil
thin
same plane
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
JP8770778A
Other languages
Japanese (ja)
Inventor
Akira Nikaido
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP8770778A priority Critical patent/JPS5516504A/en
Publication of JPS5516504A publication Critical patent/JPS5516504A/en
Pending 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

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 make a body miniature and thin by arranging a permanent magnet on the same plane as a voice coil. CONSTITUTION:Voice coil 8, wound around voice-coil receptacle 7, is arranged in the gap between cylindrical yoke 4 and permanent magnet 9. Permanent magnets 9 and cylindrical yoke 4 are arranged on the same plane as voice coil 8. Permanent magnet 9 consists of a fan-shaped unit magnet with identical polarity at its internal circumference and opposite oplarity at its external circumference.
JP8770778A 1978-07-20 1978-07-20 Thin dynamic pronouncing body Pending JPS5516504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8770778A JPS5516504A (en) 1978-07-20 1978-07-20 Thin dynamic pronouncing body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8770778A JPS5516504A (en) 1978-07-20 1978-07-20 Thin dynamic pronouncing body

Publications (1)

Publication Number Publication Date
JPS5516504A true JPS5516504A (en) 1980-02-05

Family

ID=13922377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8770778A Pending JPS5516504A (en) 1978-07-20 1978-07-20 Thin dynamic pronouncing body

Country Status (1)

Country Link
JP (1) JPS5516504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01300696A (en) * 1988-05-30 1989-12-05 Daido Steel Co Ltd Magnetic circuit using permanent magnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01300696A (en) * 1988-05-30 1989-12-05 Daido Steel Co Ltd Magnetic circuit using permanent magnet

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