FR2256619A1 - Electro-acoustical transducer - has magnetic circuit consisting of armature(s) and magnet(s) - Google Patents

Electro-acoustical transducer - has magnetic circuit consisting of armature(s) and magnet(s)

Info

Publication number
FR2256619A1
FR2256619A1 FR7423354A FR7423354A FR2256619A1 FR 2256619 A1 FR2256619 A1 FR 2256619A1 FR 7423354 A FR7423354 A FR 7423354A FR 7423354 A FR7423354 A FR 7423354A FR 2256619 A1 FR2256619 A1 FR 2256619A1
Authority
FR
France
Prior art keywords
magnetic circuit
armature
electro
magnet
circuit consisting
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
FR7423354A
Other languages
French (fr)
Other versions
FR2256619B1 (en
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.)
Elektroakusztikai Gyar
Original Assignee
Elektroakusztikai Gyar
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 Elektroakusztikai Gyar filed Critical Elektroakusztikai Gyar
Publication of FR2256619A1 publication Critical patent/FR2256619A1/en
Application granted granted Critical
Publication of FR2256619B1 publication Critical patent/FR2256619B1/fr
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
    • H04R9/025—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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • 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
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The electro-acoustical transducer has a magnetic circuit consisting of at least one armature and one magnet. Thermo plastic elements which are solid at cold temperatures are inserted between individual parts of the magnetic circuit. The elements are also inserted between them and supporting and fastening elements. The thermoplastic material is based on e.g. ethylene, propyline or polyamide. After its assembly the device is placed in a centring and clamping device, in which it is heated and then cooled or allowed to cool. The magnetic circuit can be produced quickly and relatively cheap compared with those fulfilling similar requirements. The mechanical durability of the transducer is increased.
FR7423354A 1973-12-28 1974-07-04 Electro-acoustical transducer - has magnetic circuit consisting of armature(s) and magnet(s) Granted FR2256619A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE2198A HU167591B (en) 1973-12-28 1973-12-28

Publications (2)

Publication Number Publication Date
FR2256619A1 true FR2256619A1 (en) 1975-07-25
FR2256619B1 FR2256619B1 (en) 1980-07-11

Family

ID=10995538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7423354A Granted FR2256619A1 (en) 1973-12-28 1974-07-04 Electro-acoustical transducer - has magnetic circuit consisting of armature(s) and magnet(s)

Country Status (9)

Country Link
AT (1) AT336103B (en)
BG (1) BG24685A3 (en)
CS (1) CS178821B2 (en)
DE (1) DE2428909A1 (en)
FR (1) FR2256619A1 (en)
HU (1) HU167591B (en)
PL (1) PL95857B1 (en)
SE (1) SE391102B (en)
SU (1) SU500777A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001884A1 (en) * 1981-11-17 1983-05-26 Tiefenbrun, Ivor, Sigmund Loudspeaker assembly
EP0656738A1 (en) * 1993-12-03 1995-06-07 Harman International Industries Incorporated Method of manufacturing speakers and speakers made by the method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001884A1 (en) * 1981-11-17 1983-05-26 Tiefenbrun, Ivor, Sigmund Loudspeaker assembly
EP0656738A1 (en) * 1993-12-03 1995-06-07 Harman International Industries Incorporated Method of manufacturing speakers and speakers made by the method

Also Published As

Publication number Publication date
ATA461474A (en) 1976-08-15
DE2428909A1 (en) 1975-07-10
SE7407338L (en) 1975-06-30
HU167591B (en) 1975-11-28
SU500777A3 (en) 1976-01-25
SE391102B (en) 1977-01-31
CS178821B2 (en) 1977-10-31
AT336103B (en) 1977-04-25
FR2256619B1 (en) 1980-07-11
PL95857B1 (en) 1977-11-30
BG24685A3 (en) 1978-04-12

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Legal Events

Date Code Title Description
ST Notification of lapse