ES294434A1 - Electro-acoustic transducer - Google Patents

Electro-acoustic transducer

Info

Publication number
ES294434A1
ES294434A1 ES0294434A ES294434A ES294434A1 ES 294434 A1 ES294434 A1 ES 294434A1 ES 0294434 A ES0294434 A ES 0294434A ES 294434 A ES294434 A ES 294434A ES 294434 A1 ES294434 A1 ES 294434A1
Authority
ES
Spain
Prior art keywords
cylindrical member
diaphragm
pot
magnet
polepiece
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.)
Expired
Application number
ES0294434A
Other languages
Spanish (es)
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of ES294434A1 publication Critical patent/ES294434A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • H04R31/006—Interconnection of transducer parts
    • 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
    • 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
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/34—Directing or guiding sound by means of a phase plug
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

A moving coil microphone, loud-speaker or earphone comprises a cylindrical member 3, having an inturned end, in which is concentrically disposed a substantially cylindrical permanent magnet 1. An annular air gap 5 for a moving coil 6 is defined by the inturned end of member 3 and a front polepiece 2 of the magnet 1. The magnet 1 is secured to, and centred in, the cylindrical member 3 by a body made by Injection-moulding or pressure casting a filler material in the form of metal which flows under pressure or of a thermoplastic material. The material fills entirely the cavity 8 between the magnet 1 and the cylindrical member 3 except at the air gap 5. The outside of the cylindrical member 3 has a pot-shaped cover 10 of the same filler material. An extension is provided with a disc-shaped flange 9, a cylindrical portion 12 and a beaded-over portion 13a. The portion 13a secures a diaphragm 14 while portion 12 engages an outer, pot 11. Register marks or fitting pins may facilitate assembly of the diaphragm 14 and pot 11. The outer pot 11 defines an acoustic chamber, acoustic resistance material 19 and bores 18 providing communication to the rear of the diaphragm 14. One or two bores 18 permit passage of lead wires 20. A neck 28 may vent the rear of the diaphragm 14 to provide a microphone having a cardioid characteristic. A front protective cover 16 is provided. Only the fitting surfaces between a rear polepiece 4 and the cylindrical member 3 and the inturned end of the cylindrical member 3 and the front polepiece 2 are machined.
ES0294434A 1962-12-13 1963-12-12 Electro-acoustic transducer Expired ES294434A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT974362A AT236474B (en) 1962-12-13 1962-12-13 Electroacoustic transducer and device for its manufacture

Publications (1)

Publication Number Publication Date
ES294434A1 true ES294434A1 (en) 1964-04-01

Family

ID=3616872

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0294434A Expired ES294434A1 (en) 1962-12-13 1963-12-12 Electro-acoustic transducer

Country Status (10)

Country Link
US (1) US3342953A (en)
AT (1) AT236474B (en)
BE (1) BE641006A (en)
CH (2) CH452606A (en)
DE (3) DE1224366C2 (en)
ES (1) ES294434A1 (en)
FR (1) FR1377088A (en)
GB (1) GB1065454A (en)
NL (2) NL143786B (en)
SE (1) SE321957B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258543A (en) * 1962-10-01 1966-06-28 Electro Voice Dynamic microphone
US3581015A (en) * 1966-12-28 1971-05-25 Aiwa Co Dynamic microphone
DE1295657B (en) * 1967-07-26 1969-05-22 Krone Kg Electrodynamic ear capsule
FR2083672B1 (en) * 1970-03-31 1973-10-19 Senzaki Seisakusho Kk
NZ197139A (en) * 1980-05-23 1985-01-31 Int Standard Electric Corp Moving coil electrodynamic transducer construction
GB2082020B (en) * 1980-06-30 1985-05-30 Pioneer Electronic Corp Ear speaker
DE3033631A1 (en) * 1980-09-06 1982-04-29 Fried. Krupp Gmbh, 4300 Essen Telephone receiver shell injection moulded to accurate dimensions - from polyamide or polycarbonate contg. glass fibres or beads (SE 13.4.82)
GB2113503B (en) * 1981-12-30 1985-05-09 Plessey Co Plc Electro-acoustic transducers
US4672675A (en) * 1985-08-19 1987-06-09 International Jensen Incorporated Multiple speaker loudspeaker with conductive bridge
DE4007678A1 (en) * 1990-03-10 1991-09-12 Lehner Fernsprech Signal Dynamic electroacoustic transducer for radio telephone handpiece - has housing receiving insert containing magnetic system and providing support face for membrane edge
DE19816060A1 (en) * 1998-04-09 1999-11-18 Bosch Gmbh Robert speaker
US7203332B2 (en) * 2002-05-02 2007-04-10 Harman International Industries, Incorporated Magnet arrangement for loudspeaker
DE102009036337B4 (en) * 2009-08-06 2014-01-02 Robert Bösnecker Device with embedded membrane

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB549643A (en) * 1941-05-27 1942-12-01 Standard Telephones Cables Ltd Improvements in or relating to telephone transmitters and receivers
US2566604A (en) * 1948-03-16 1951-09-04 William C Eaves Electrodynamic loud-speaker assembly
US2714134A (en) * 1951-02-27 1955-07-26 Martin L Touger Headset receiver
DE1702070U (en) * 1955-04-27 1955-07-07 Max Grundig PERMANENT MAGNET SYSTEM IN POT FORM FOR DYNAMIC SPEAKERS.
US2890297A (en) * 1956-10-10 1959-06-09 Dictograph Products Co Inc Transducer assembly
DE1744859U (en) * 1956-10-24 1957-05-16 Deutsche Edelstahlwerke Ag RING GAP MAGNET SYSTEM.
DE1774170U (en) * 1958-06-28 1958-09-18 Holmberg & Co DYNAMIC SOUND CONVERTER.
GB956448A (en) * 1959-06-24 1964-04-29 Philips Electrical Ind Ltd Improvements in or relating to electrodynamic microphones
DE1797780U (en) * 1959-02-13 1959-10-15 Siemens Elektrogeraete Gmbh SPEAKER.
DE1799329U (en) * 1959-09-10 1959-11-05 Deutsche Edelstahlwerke Ag PERMANENT RING GAP MAGNET SYSTEM WITH A POT-LIKE SHIELD
US3041601A (en) * 1959-10-08 1962-06-26 Electric Auto Lite Co Horn frame mounting means
DE1847044U (en) * 1961-12-22 1962-02-22 Magnetfabrik Gewerkschaft Wind SPEAKER MAGNETIC SYSTEM WITH MEMBRANE BASKET.

Also Published As

Publication number Publication date
CH452606A (en) 1968-03-15
NL301514A (en)
SE321957B (en) 1970-03-23
BE641006A (en) 1964-04-01
DE1224366C2 (en) 1974-03-21
DE1243240C2 (en) 1974-05-09
AT236474B (en) 1964-10-26
DE1243240B (en) 1967-06-29
FR1377088A (en) 1964-10-31
CH418401A (en) 1966-08-15
US3342953A (en) 1967-09-19
DE1224366B (en) 1966-09-08
NL143786B (en) 1974-10-15
GB1065454A (en) 1967-04-12

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