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JPS5553996A - Speaker - Google Patents

Speaker

Info

Publication number
JPS5553996A
JPS5553996A JP12816978A JP12816978A JPS5553996A JP S5553996 A JPS5553996 A JP S5553996A JP 12816978 A JP12816978 A JP 12816978A JP 12816978 A JP12816978 A JP 12816978A JP S5553996 A JPS5553996 A JP S5553996A
Authority
JP
Japan
Prior art keywords
yoke
fixed
circular
speaker
plate
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
JP12816978A
Other languages
Japanese (ja)
Other versions
JPS5831157B2 (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 JP12816978A priority Critical patent/JPS5831157B2/en
Publication of JPS5553996A publication Critical patent/JPS5553996A/en
Publication of JPS5831157B2 publication Critical patent/JPS5831157B2/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
    • H04R9/025—Magnetic circuit
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R9/06—Loudspeakers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To eliminate the distortion caused by the edge or the damper and the like by supporting the pasive diaphragm via the magnetic fluid, thus increasing the characteristics of the speaker. CONSTITUTION:Partition plate 2 is formed within container 1 opening at the upper surface, and holes 3 and 4 are formed to plate 2. Furthermore, yoke 5 is fixed to plate 2, and hole 6 is formed at the center part of yoke 5 along with center pole 7 unified. At the same time, circular yoke 9 is provided on yoke 5, and the circular magnetic gap is formed between the inner circumference of yoke 9 and the outer circumference of pole 7. Then circular yoke 10 is fixed at the opening part of container 1, and projected groove 11 is formed at the inner circumference of yoke 10. And circular magnet 12 is fixed on the upper surface of yoke 10. Furthermore, yoke 13 is fixed on the upper surface of magnet 12, and projected groove 14 is formed to yoke 13. Then magnetic fluid 15 is loaded into the magnetic gap between grooves 11 and 14, and diaphragm 16 is supported to fluid 15. Thus the distortion caused to the speaker can be reduced.
JP12816978A 1978-10-17 1978-10-17 speaker Expired JPS5831157B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12816978A JPS5831157B2 (en) 1978-10-17 1978-10-17 speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12816978A JPS5831157B2 (en) 1978-10-17 1978-10-17 speaker

Publications (2)

Publication Number Publication Date
JPS5553996A true JPS5553996A (en) 1980-04-19
JPS5831157B2 JPS5831157B2 (en) 1983-07-04

Family

ID=14978100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12816978A Expired JPS5831157B2 (en) 1978-10-17 1978-10-17 speaker

Country Status (1)

Country Link
JP (1) JPS5831157B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176796U (en) * 1981-04-30 1982-11-09
US4384174A (en) * 1979-10-02 1983-05-17 Victor Company Of Japan, Limited Moving voice coil loudspeaker, peripheral diaphragm support, diaphragm construction, bobbin to diaphragm reinforcement
US8542861B2 (en) 2007-11-20 2013-09-24 Panasonic Corporation Loudspeaker, video device, and portable information processing apparatus
US10244325B2 (en) 2015-09-14 2019-03-26 Wing Acoustics Limited Audio transducer and audio devices incorporating the same
US11137803B2 (en) 2017-03-22 2021-10-05 Wing Acoustics Limited Slim electronic devices and audio transducers incorporated therein
US11166100B2 (en) 2017-03-15 2021-11-02 Wing Acoustics Limited Bass optimization for audio systems and devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4133457B2 (en) * 2003-03-06 2008-08-13 フォスター電機株式会社 Speaker

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384174A (en) * 1979-10-02 1983-05-17 Victor Company Of Japan, Limited Moving voice coil loudspeaker, peripheral diaphragm support, diaphragm construction, bobbin to diaphragm reinforcement
JPS57176796U (en) * 1981-04-30 1982-11-09
JPH036074Y2 (en) * 1981-04-30 1991-02-15
US8542861B2 (en) 2007-11-20 2013-09-24 Panasonic Corporation Loudspeaker, video device, and portable information processing apparatus
JP5441710B2 (en) * 2007-11-20 2014-03-12 パナソニック株式会社 Speaker, video equipment, and portable information processing apparatus
US9247349B2 (en) 2007-11-20 2016-01-26 Panasonic Intellectual Property Management Co., Ltd. Loudspeaker, video device, and portable information processing apparatus
US10244325B2 (en) 2015-09-14 2019-03-26 Wing Acoustics Limited Audio transducer and audio devices incorporating the same
US10701490B2 (en) 2015-09-14 2020-06-30 Wing Acoustics Limited Audio transducers
US10887701B2 (en) 2015-09-14 2021-01-05 Wing Acoustics Limited Audio transducers
US11102582B2 (en) 2015-09-14 2021-08-24 Wing Acoustics Limited Audio transducers and devices incorporating the same
US11490205B2 (en) 2015-09-14 2022-11-01 Wing Acoustics Limited Audio transducers
US11716571B2 (en) 2015-09-14 2023-08-01 Wing Acoustics Limited Relating to audio transducers
US11968510B2 (en) 2015-09-14 2024-04-23 Wing Acoustics Limited Audio transducers
US11166100B2 (en) 2017-03-15 2021-11-02 Wing Acoustics Limited Bass optimization for audio systems and devices
US11137803B2 (en) 2017-03-22 2021-10-05 Wing Acoustics Limited Slim electronic devices and audio transducers incorporated therein

Also Published As

Publication number Publication date
JPS5831157B2 (en) 1983-07-04

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