JPS55166398A - Motor-driven speaker - Google Patents

Motor-driven speaker

Info

Publication number
JPS55166398A
JPS55166398A JP7422979A JP7422979A JPS55166398A JP S55166398 A JPS55166398 A JP S55166398A JP 7422979 A JP7422979 A JP 7422979A JP 7422979 A JP7422979 A JP 7422979A JP S55166398 A JPS55166398 A JP S55166398A
Authority
JP
Japan
Prior art keywords
heat
magnetic
coil
magnetic circuit
yoke
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
JP7422979A
Other languages
Japanese (ja)
Other versions
JPS5937637B2 (en
Inventor
Masaharu Ono
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 JP7422979A priority Critical patent/JPS5937637B2/en
Publication of JPS55166398A publication Critical patent/JPS55166398A/en
Publication of JPS5937637B2 publication Critical patent/JPS5937637B2/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
    • H04R9/04—Construction, mounting, or centering of coil

Abstract

PURPOSE:To reduce greatly the temperature increase of the voice coil, by filling the magnetic fluid into the magnetic gap and at the same time filling the heat accumulating material in such way that a contact may be secured to the magnetic circuit. CONSTITUTION:Magnetic fluid 10 is filled into the magnetic gap, and the heat generated to voice coil 8 via fluid 10 is escaped to yoke 4 and center pole 2. Furthermore, a circular space which is partitioned with circular pertition plate 11 is formed inside the magnetic circuit. And heat storing material 12 having the fusing point approximate to the room temperature and large latent heat of fusion is filled into the circular space so as to secure a contact to the magnetic circuit. As a result, the heat set free to yoke 4 and center pole 2 from coil 8 is absorbed as the fused latent heat of material 12, thus preventing the temperature increase of coil 8.
JP7422979A 1979-06-12 1979-06-12 electrodynamic speaker Expired JPS5937637B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7422979A JPS5937637B2 (en) 1979-06-12 1979-06-12 electrodynamic speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7422979A JPS5937637B2 (en) 1979-06-12 1979-06-12 electrodynamic speaker

Publications (2)

Publication Number Publication Date
JPS55166398A true JPS55166398A (en) 1980-12-25
JPS5937637B2 JPS5937637B2 (en) 1984-09-11

Family

ID=13541127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7422979A Expired JPS5937637B2 (en) 1979-06-12 1979-06-12 electrodynamic speaker

Country Status (1)

Country Link
JP (1) JPS5937637B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019070319A1 (en) * 2017-10-02 2019-04-11 Google Llc Multi-purpose tweeter yoke
WO2022255061A1 (en) * 2021-05-31 2022-12-08 ヤマハ株式会社 Speaker unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196057U (en) * 1987-12-16 1989-06-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019070319A1 (en) * 2017-10-02 2019-04-11 Google Llc Multi-purpose tweeter yoke
WO2022255061A1 (en) * 2021-05-31 2022-12-08 ヤマハ株式会社 Speaker unit

Also Published As

Publication number Publication date
JPS5937637B2 (en) 1984-09-11

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