JPS5542485A - Manufacture of voice coil - Google Patents

Manufacture of voice coil

Info

Publication number
JPS5542485A
JPS5542485A JP11728678A JP11728678A JPS5542485A JP S5542485 A JPS5542485 A JP S5542485A JP 11728678 A JP11728678 A JP 11728678A JP 11728678 A JP11728678 A JP 11728678A JP S5542485 A JPS5542485 A JP S5542485A
Authority
JP
Japan
Prior art keywords
base body
voice coil
conductor
helically
high energy
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
JP11728678A
Other languages
Japanese (ja)
Other versions
JPS5738080B2 (en
Inventor
Yasushi Miyoshi
Kenji Torasawa
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP11728678A priority Critical patent/JPS5542485A/en
Publication of JPS5542485A publication Critical patent/JPS5542485A/en
Publication of JPS5738080B2 publication Critical patent/JPS5738080B2/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; ELECTRIC HEARING AIDS; 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

PURPOSE:To increase a volume content rate of a conductor that a voice coil part occupies by making highly-precise work possible by working a bobbin base made of Al by a beam with high energy. CONSTITUTION:On the inner wall of cylindrical bobbin base 1 made of Al, non- conductor layer 2 of alumina is formed. Then, the surface of base body 1 is irradiated helically with a laser beam, electron beam, etc., with high energy in a direction from one terminal of base body 1 to the other. As a result, Al residing between the surface of base body 1 where the beam strikes and non-conductor layer 2 on the inner wall is fused and evaporated helically to a beam width, so that helical and continuous coil 3 of Al will be formed on base body 1. Therefore, highly-precise work is made possible by reducing the beam in focusing diameter freely and a volume contact rate of the conductor that the voice coil part occupies can be increased.
JP11728678A 1978-09-20 1978-09-20 Manufacture of voice coil Granted JPS5542485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11728678A JPS5542485A (en) 1978-09-20 1978-09-20 Manufacture of voice coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11728678A JPS5542485A (en) 1978-09-20 1978-09-20 Manufacture of voice coil

Publications (2)

Publication Number Publication Date
JPS5542485A true JPS5542485A (en) 1980-03-25
JPS5738080B2 JPS5738080B2 (en) 1982-08-13

Family

ID=14707977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11728678A Granted JPS5542485A (en) 1978-09-20 1978-09-20 Manufacture of voice coil

Country Status (1)

Country Link
JP (1) JPS5542485A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6272254U (en) * 1985-10-26 1987-05-08
JPS63125099A (en) * 1986-11-14 1988-05-28 Foster Denki Kk Production of voice coil
JPH02103740A (en) * 1989-07-27 1990-04-16 Alps Electric Co Ltd Manufacture of driving coil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6272254U (en) * 1985-10-26 1987-05-08
JPS63125099A (en) * 1986-11-14 1988-05-28 Foster Denki Kk Production of voice coil
JPH02103740A (en) * 1989-07-27 1990-04-16 Alps Electric Co Ltd Manufacture of driving coil

Also Published As

Publication number Publication date
JPS5738080B2 (en) 1982-08-13

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