JPS56142605A - Coil bobbin - Google Patents

Coil bobbin

Info

Publication number
JPS56142605A
JPS56142605A JP4649280A JP4649280A JPS56142605A JP S56142605 A JPS56142605 A JP S56142605A JP 4649280 A JP4649280 A JP 4649280A JP 4649280 A JP4649280 A JP 4649280A JP S56142605 A JPS56142605 A JP S56142605A
Authority
JP
Japan
Prior art keywords
magnesium
coil bobbin
speaker
carbonide
boride
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
JP4649280A
Other languages
Japanese (ja)
Other versions
JPS6329478B2 (en
Inventor
Fumio Hayakawa
Michizo 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.)
Onkyo Corp
Original Assignee
Onkyo Corp
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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP4649280A priority Critical patent/JPS56142605A/en
Publication of JPS56142605A publication Critical patent/JPS56142605A/en
Publication of JPS6329478B2 publication Critical patent/JPS6329478B2/ja
Granted 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
    • H04R9/046—Construction

Abstract

PURPOSE:To obtain a speaker which has the high efficiency of acoustic radiation and can resist great input by forming a coil bobbin by a magnesium compound. CONSTITUTION:A coil bobbin 2 for a voice coil 3 is formed using a magnesium compound, such as magnesium boride, a boride of magnesium, and magnesium carbonide, a carbonide of magnesium, as a material. Thus, a speaker can be obtained which satisfies conditions, such as light weight, large rigidity, excellent radiating effect, etc. which are required as the coil bobbin of the speaker, has the high efficiency of acoustic radiation and can resist great input.
JP4649280A 1980-04-08 1980-04-08 Coil bobbin Granted JPS56142605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4649280A JPS56142605A (en) 1980-04-08 1980-04-08 Coil bobbin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4649280A JPS56142605A (en) 1980-04-08 1980-04-08 Coil bobbin

Publications (2)

Publication Number Publication Date
JPS56142605A true JPS56142605A (en) 1981-11-07
JPS6329478B2 JPS6329478B2 (en) 1988-06-14

Family

ID=12748710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4649280A Granted JPS56142605A (en) 1980-04-08 1980-04-08 Coil bobbin

Country Status (1)

Country Link
JP (1) JPS56142605A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4634257B2 (en) * 2005-08-30 2011-02-16 パイオニア株式会社 Voice coil bobbin, method for manufacturing the same, and speaker device

Also Published As

Publication number Publication date
JPS6329478B2 (en) 1988-06-14

Similar Documents

Publication Publication Date Title
JPS5379525A (en) Compound diaphtagm for speakers
GB2147775B (en) Defined-coverage loudspeaker horn
JPS5214278A (en) Panel assemly process
JPS56142605A (en) Coil bobbin
JPS56142604A (en) Coil bobbin
JPS541735A (en) Sound absorbing material mounting structure of sound absorber
JPS5324976A (en) Means for positioning servo-valve spool
JPS5376823A (en) Plane driving type speaker
JPS56142606A (en) Coil bobbin
JPS52108111A (en) Diaphragm for speaker
JPS523424A (en) Non-combustible speaker vibration plate
JPS522427A (en) Oscillating plate for loud-speaker
JPS522723A (en) Oscillation plate for speaker
JPS5288015A (en) Speaker
JPS567594A (en) Voice coil for flat diaphragm type speaker
JPS5272421A (en) Inner iron yoke transformer core
JPS5263320A (en) Speaker
JPS5242113A (en) High sound speaker using plane oscillation plate
JPS53125820A (en) Speaker system
JPS52127120A (en) Vertical deflection output circuit
JPS53122348A (en) Amplifying circuit
JPS51113726A (en) Loud speaker
JPS53106114A (en) Speaker of conical shape
JPS51142957A (en) Magnetron
JPS524818A (en) Speaker