EP0478979A2 - Haut-parleur électrodynamique - Google Patents

Haut-parleur électrodynamique Download PDF

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Publication number
EP0478979A2
EP0478979A2 EP91115057A EP91115057A EP0478979A2 EP 0478979 A2 EP0478979 A2 EP 0478979A2 EP 91115057 A EP91115057 A EP 91115057A EP 91115057 A EP91115057 A EP 91115057A EP 0478979 A2 EP0478979 A2 EP 0478979A2
Authority
EP
European Patent Office
Prior art keywords
conductor tracks
voice coil
coil
electrodynamic loudspeaker
loudspeaker
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.)
Withdrawn
Application number
EP91115057A
Other languages
German (de)
English (en)
Other versions
EP0478979A3 (en
Inventor
Harald Schröder
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke 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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of EP0478979A2 publication Critical patent/EP0478979A2/fr
Publication of EP0478979A3 publication Critical patent/EP0478979A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering

Definitions

  • the invention relates to an electrodynamic loudspeaker according to the preamble of patent claim 1.
  • the voice coil is known to consist of a tubular coil body on which a multi-layer coil made of enamelled copper wire is arranged and fastened.
  • the usual voice coils are very complex and therefore relatively expensive.
  • the coil former is punched out of a film as a block cut, formed into a winding core and wound with a enamelled copper wire.
  • a surge of current is then passed through the winding, causing the winding to stick.
  • the final caking of the turns takes place in a heating oven and is very time consuming.
  • the wire ends of the coil must be soldered with flexible copper wires that connect the voice coil to speaker terminals.
  • the invention has for its object to provide a speaker with a voice coil, which consists of less complex, easily assembled parts.
  • the voice coil 104 does not consist of a tubular coil body on which a multilayer coil made of enamelled copper wire is arranged, but according to the invention of an insulating film provided with conductor tracks.
  • the conductor tracks can be applied to the film by known manufacturing processes for printed circuits, for example by printing a conductive material or by etching away from a conductive layer previously applied to the film.
  • FIG. 2 shows, in a highly simplified manner, the initial state of an insulating film 106 designed as a printed circuit in the still flat state.
  • the rectangular, shortened in length Insulation film 106 is provided with parallel conductor tracks 107 separated from one another by small distances.
  • the conductor tracks 107 are arranged inclined such that after rounding the film 106 and welding the overlapping surfaces 108, 109 of the same numbers 1-24 provided in the beginning and end regions of the conductor tracks 107, a hollow cylindrical coil, namely the voice coil 104, is formed.
  • the insulating film 106 also has two strip-shaped connecting ends 112, 113 which are formed perpendicularly to the course of the conductor tracks 107 and are provided with further conductor tracks 110, 111 and are each conductively connected to the first and the last conductor track 107.
  • the flexible conductor tracks 110, 111 provided as a power supply for the voice coil 104 are provided in their end regions with soldering eyes 114, 115, with which they are fastened to flat plug pins 116, 117 arranged in the loudspeaker basket 102. It should be mentioned at this point that the connection ends 112, 113 can also be formed in any direction to the conductor tracks 107 and can be brought into the desired direction by kinking.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP19910115057 1990-10-01 1991-09-06 Electrodynamic loudspeaker Withdrawn EP0478979A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904031011 DE4031011A1 (de) 1990-10-01 1990-10-01 Elektrodynamischer lautsprecher
DE4031011 1990-10-01

Publications (2)

Publication Number Publication Date
EP0478979A2 true EP0478979A2 (fr) 1992-04-08
EP0478979A3 EP0478979A3 (en) 1992-08-26

Family

ID=6415353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910115057 Withdrawn EP0478979A3 (en) 1990-10-01 1991-09-06 Electrodynamic loudspeaker

Country Status (3)

Country Link
EP (1) EP0478979A3 (fr)
JP (1) JPH04227199A (fr)
DE (1) DE4031011A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2620787A (en) * 2022-07-22 2024-01-24 Gp Acoustics Uk Ltd Loudspeakers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1338703A (en) * 1971-07-08 1973-11-28 Emi Ltd Coils for electromechanical transducers
EP0112559A1 (fr) * 1982-12-24 1984-07-04 International Standard Electric Corporation Haut-parleur
JPS63215296A (ja) * 1987-03-04 1988-09-07 Nec Corp ボイスコイル
EP0377171A2 (fr) * 1989-01-03 1990-07-11 Nokia Unterhaltungselektronik (Deutschland) GmbH Haut-parleur avec fils de connexion enfichables

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1338703A (en) * 1971-07-08 1973-11-28 Emi Ltd Coils for electromechanical transducers
EP0112559A1 (fr) * 1982-12-24 1984-07-04 International Standard Electric Corporation Haut-parleur
JPS63215296A (ja) * 1987-03-04 1988-09-07 Nec Corp ボイスコイル
EP0377171A2 (fr) * 1989-01-03 1990-07-11 Nokia Unterhaltungselektronik (Deutschland) GmbH Haut-parleur avec fils de connexion enfichables

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 5 (E-701)9. Januar 1989 & JP-A-63 215 296 ( NEC CORP ) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2620787A (en) * 2022-07-22 2024-01-24 Gp Acoustics Uk Ltd Loudspeakers

Also Published As

Publication number Publication date
DE4031011A1 (de) 1992-04-02
EP0478979A3 (en) 1992-08-26
JPH04227199A (ja) 1992-08-17

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