JPS5675800A - Electromagnetic sound body for watch - Google Patents

Electromagnetic sound body for watch

Info

Publication number
JPS5675800A
JPS5675800A JP15270679A JP15270679A JPS5675800A JP S5675800 A JPS5675800 A JP S5675800A JP 15270679 A JP15270679 A JP 15270679A JP 15270679 A JP15270679 A JP 15270679A JP S5675800 A JPS5675800 A JP S5675800A
Authority
JP
Japan
Prior art keywords
yokes
sound body
permanent magnet
dead space
watch
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
JP15270679A
Other languages
Japanese (ja)
Inventor
Seiichi 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.)
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 JP15270679A priority Critical patent/JPS5675800A/en
Publication of JPS5675800A publication Critical patent/JPS5675800A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

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 make the size small and thin, by locating a permanent magnet at a dead space between projected yokes. CONSTITUTION:Sound body is almost ellipse type, projection yokes 6, 7 are lengthwise arranged, a permanent magnet 12 is of square rod and located at a dead space between the yokes, and the magnet poles are of opposite magnetism at the yokes 6 and 7. With this constitution, many more exciting windings can be made to a limited space to realize the sound body for watch less in the power consumption, allowing to provide the permanent magnet in the dead space of the base plate of the main body of the sound body effectively and to make the size small and thin.
JP15270679A 1979-11-26 1979-11-26 Electromagnetic sound body for watch Pending JPS5675800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15270679A JPS5675800A (en) 1979-11-26 1979-11-26 Electromagnetic sound body for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15270679A JPS5675800A (en) 1979-11-26 1979-11-26 Electromagnetic sound body for watch

Publications (1)

Publication Number Publication Date
JPS5675800A true JPS5675800A (en) 1981-06-23

Family

ID=15546361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15270679A Pending JPS5675800A (en) 1979-11-26 1979-11-26 Electromagnetic sound body for watch

Country Status (1)

Country Link
JP (1) JPS5675800A (en)

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