EP0467016A3 - Magnetic circuit for a speaker - Google Patents

Magnetic circuit for a speaker Download PDF

Info

Publication number
EP0467016A3
EP0467016A3 EP19910104052 EP91104052A EP0467016A3 EP 0467016 A3 EP0467016 A3 EP 0467016A3 EP 19910104052 EP19910104052 EP 19910104052 EP 91104052 A EP91104052 A EP 91104052A EP 0467016 A3 EP0467016 A3 EP 0467016A3
Authority
EP
European Patent Office
Prior art keywords
speaker
magnetic circuit
magnetic
circuit
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
EP19910104052
Other versions
EP0467016B1 (en
EP0467016A2 (en
Inventor
Jiro
Fumio Murayama
Kunio Mitobe
Shuichi Watanabe
Masatosi Sato
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26507782&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0467016(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP19327790A external-priority patent/JPH0479700A/en
Priority claimed from JP2280773A external-priority patent/JP2987188B2/en
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of EP0467016A2 publication Critical patent/EP0467016A2/en
Publication of EP0467016A3 publication Critical patent/EP0467016A3/en
Application granted granted Critical
Publication of EP0467016B1 publication Critical patent/EP0467016B1/en
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP91104052A 1990-07-20 1991-03-15 Magnetic circuit for a speaker Revoked EP0467016B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP193277/90 1990-07-20
JP19327790A JPH0479700A (en) 1990-07-20 1990-07-20 Magnetic circuit for loudspeaker
JP2280773A JP2987188B2 (en) 1990-10-19 1990-10-19 Magnetic circuit for speaker
JP280773/90 1990-10-19

Publications (3)

Publication Number Publication Date
EP0467016A2 EP0467016A2 (en) 1992-01-22
EP0467016A3 true EP0467016A3 (en) 1992-06-17
EP0467016B1 EP0467016B1 (en) 1997-10-08

Family

ID=26507782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104052A Revoked EP0467016B1 (en) 1990-07-20 1991-03-15 Magnetic circuit for a speaker

Country Status (4)

Country Link
EP (1) EP0467016B1 (en)
KR (1) KR920003800A (en)
CA (1) CA2038185A1 (en)
DE (1) DE69127862T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020046897A (en) * 2000-12-09 2002-06-21 이형도 A Magnetic circuit of micro speaker
CN109714696A (en) * 2018-12-07 2019-05-03 歌尔股份有限公司 A kind of assembly method of magnetic circuit component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386332A (en) * 1980-08-01 1983-05-31 Pioneer Electronic Corporation Magnetic circuit for dynamic speaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6248246A (en) * 1985-08-27 1987-03-02 Moriyama Kogyo Kk Rotary machine of permanent magnet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386332A (en) * 1980-08-01 1983-05-31 Pioneer Electronic Corporation Magnetic circuit for dynamic speaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 237 (E-528) 4 august 1987; & JP-A-62 048 246 (MORIYAMA KOGYO KK) 2 March 1987 *

Also Published As

Publication number Publication date
DE69127862D1 (en) 1997-11-13
EP0467016B1 (en) 1997-10-08
DE69127862T2 (en) 1998-05-28
CA2038185A1 (en) 1992-01-21
EP0467016A2 (en) 1992-01-22
KR920003800A (en) 1992-02-29

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