JPS57148499A - Assembling method of speaker - Google Patents

Assembling method of speaker

Info

Publication number
JPS57148499A
JPS57148499A JP3474881A JP3474881A JPS57148499A JP S57148499 A JPS57148499 A JP S57148499A JP 3474881 A JP3474881 A JP 3474881A JP 3474881 A JP3474881 A JP 3474881A JP S57148499 A JPS57148499 A JP S57148499A
Authority
JP
Japan
Prior art keywords
clearance
plate
magnetic
diaphragm
pole
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
JP3474881A
Other languages
Japanese (ja)
Other versions
JPS6313636B2 (en
Inventor
Haruo Takenaka
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 JP3474881A priority Critical patent/JPS57148499A/en
Publication of JPS57148499A publication Critical patent/JPS57148499A/en
Publication of JPS6313636B2 publication Critical patent/JPS6313636B2/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
    • H04R9/041—Centering

Abstract

PURPOSE:To accurately insert a voice coil into a magnetic clearance without requiring any high dimensional accuracy to the parts, by positioning the voice coil to the center of the magnetic clearance through a uniform negative pressure in the dome of a dome-shaped diaphragm and the self-centering function of a magnetic fluid. CONSTITUTION:A magnet 5 is put between a lower plate 2 having a center pole 1 and a ring-shaped upper plate 3, and a magnetic clearance 4 is formed with the outer wall of the pole 1 and the inner wall of the plate 3 opposing to each other. A hole 12 is installed through the pole 1, and a magnetic fluid 13 is poured into and maintained in the clearance 4, and then, a diaphragm 7 is placed on the plate 3 so that its voice coil 11 may be inserted slightly into the clearance 4. Then, the coil 11 is positioned to a location in the clearance 4 by mean of vacuum sucking with an adequate pressure through the hole 12, and then, the diaphragm 7 is supported by the plate 3. Thereafter, the coil 11 is inserted into the clearance 4 with the negative pressure in a dome part and the centering function of the magnetic fluid 13 without requiring any high accuracy to the parts.
JP3474881A 1981-03-10 1981-03-10 Assembling method of speaker Granted JPS57148499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3474881A JPS57148499A (en) 1981-03-10 1981-03-10 Assembling method of speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3474881A JPS57148499A (en) 1981-03-10 1981-03-10 Assembling method of speaker

Publications (2)

Publication Number Publication Date
JPS57148499A true JPS57148499A (en) 1982-09-13
JPS6313636B2 JPS6313636B2 (en) 1988-03-26

Family

ID=12422944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3474881A Granted JPS57148499A (en) 1981-03-10 1981-03-10 Assembling method of speaker

Country Status (1)

Country Link
JP (1) JPS57148499A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177897A (en) * 1985-02-01 1986-08-09 Yoshiro Nakamatsu Oscillating device for unassisted pump speaker and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177897A (en) * 1985-02-01 1986-08-09 Yoshiro Nakamatsu Oscillating device for unassisted pump speaker and the like

Also Published As

Publication number Publication date
JPS6313636B2 (en) 1988-03-26

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