JPS5658399A - Electromagnetic type speaker - Google Patents

Electromagnetic type speaker

Info

Publication number
JPS5658399A
JPS5658399A JP13548579A JP13548579A JPS5658399A JP S5658399 A JPS5658399 A JP S5658399A JP 13548579 A JP13548579 A JP 13548579A JP 13548579 A JP13548579 A JP 13548579A JP S5658399 A JPS5658399 A JP S5658399A
Authority
JP
Japan
Prior art keywords
iron piece
moving iron
magnetic flux
magnetic
magnet
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
JP13548579A
Other languages
Japanese (ja)
Inventor
Fumikazu Murakami
Yoshiaki Hara
Ichiro Horikoshi
Susumu Fujita
Osamu Ide
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP13548579A priority Critical patent/JPS5658399A/en
Publication of JPS5658399A publication Critical patent/JPS5658399A/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
    • H04R13/02—Telephone receivers

Abstract

PURPOSE:To reduce the diameter of electromagnetic type speaker, without incurring the lowering in resonant frequency and sound pressure, by inserting a spring member bending broadwise the moving iron piece between the surrounding of moving iron piece and the plate to support the moving iron piece. CONSTITUTION:Magnetic flux by a magnet 4 flows through the plate 2, magnetic core 1 and moving iron piece 6 to produce a high magnetic flux density at magnetic air gap between the moving iron piece 6 and the magnetic core 1. Further, when a signal current flows to a coil, the magnetic flux produced flows to a loop almost the same as the magnetic flux by the magnet 4 and the magnetic flux of magnetic air gap is changed, to oscillate the moving iron piece 6. Since the moving iron piece 6 is supported with a spring support 8, the moving iron piece 6 oscillates close almost to a piston movement. Further, since the moving iron piece 6 covers the magnet 4, leakage of magnetism is less and the magnetic flux in the magnetic air gap is increased.
JP13548579A 1979-10-19 1979-10-19 Electromagnetic type speaker Pending JPS5658399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13548579A JPS5658399A (en) 1979-10-19 1979-10-19 Electromagnetic type speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13548579A JPS5658399A (en) 1979-10-19 1979-10-19 Electromagnetic type speaker

Publications (1)

Publication Number Publication Date
JPS5658399A true JPS5658399A (en) 1981-05-21

Family

ID=15152817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13548579A Pending JPS5658399A (en) 1979-10-19 1979-10-19 Electromagnetic type speaker

Country Status (1)

Country Link
JP (1) JPS5658399A (en)

Similar Documents

Publication Publication Date Title
DE3469399D1 (en) Loudspeaker with motional feedback
CA2083988A1 (en) Balanced armature transducers with transverse gap
US2897291A (en) Sound reproducer
JPS5658399A (en) Electromagnetic type speaker
JPS579197A (en) Speaker
GB1022850A (en) Electro-acoustic transducer
JPS55125800A (en) Sound body for watch
GB1164307A (en) Magnets.
JPS5728498A (en) Dynamic speaker
JPS6422200A (en) Sound pressure variable type loudspeaker
KR960040083A (en) Speaker system
JPS5510236A (en) Electromagnetic pickup cartridge
JPS567593A (en) Magnetic circuit for flat diaphragm speaker
JPS5793168A (en) Wire dot type printer head
JPS56168499A (en) Structure of electomagnetic sound generator
JPS57154998A (en) Electromagnetic speaker
JPS57118611A (en) Bistable electromagnet device
JPS57152797A (en) Electromagnetic type sound generator
JPS5728497A (en) Magnetic circuit for speaker
JPS56158596A (en) Magnetic circuit for speaker
JPS5646399A (en) Moving magnet type speaker
GB1290240A (en)
JPS55104199A (en) Acoustic converter of electromagnetic type
JPS5754500A (en) Small sized speaker
JPS56169997A (en) Construction of electromagnetic type sound producing element