EP0685984A2 - Support de bobine mobile pour haut-parleur - Google Patents

Support de bobine mobile pour haut-parleur Download PDF

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Publication number
EP0685984A2
EP0685984A2 EP95107545A EP95107545A EP0685984A2 EP 0685984 A2 EP0685984 A2 EP 0685984A2 EP 95107545 A EP95107545 A EP 95107545A EP 95107545 A EP95107545 A EP 95107545A EP 0685984 A2 EP0685984 A2 EP 0685984A2
Authority
EP
European Patent Office
Prior art keywords
voice coil
holding members
coil
former
coil former
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Withdrawn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
EP95107545A
Other languages
German (de)
English (en)
Other versions
EP0685984A3 (fr
Inventor
Stefan Geisenberger
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.)
Harman Audio Electronic Systems GmbH
Original Assignee
Nokia Technology 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 Nokia Technology GmbH filed Critical Nokia Technology GmbH
Publication of EP0685984A2 publication Critical patent/EP0685984A2/fr
Publication of EP0685984A3 publication Critical patent/EP0685984A3/fr
Withdrawn legal-status Critical Current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; ELECTRIC HEARING AIDS; 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
    • H04R9/045—Mounting

Definitions

  • the invention deals with the formation of voice coil carriers for loudspeakers, in particular with the connection of voice coil and voice coil carrier.
  • the voice coil is connected to the voice coil former in such a way that the coil wire coated with baked enamel is wound around the tubular voice coil former and then the winding is baked with the voice coil former in a temperature process.
  • the outer surface of the voice coil bobbin, around which the coil wire is wound also to be coated with baking lacquer.
  • the invention has for its object to provide a connection between the voice coil and voice coil support, which ensures a permanent function even above 200 degrees Celsius.
  • holding members are present according to claim 1, which extend at least in the direction of the loudspeaker axis and which rest on the side of the voice coil that faces away from the voice coil support, a detachment of voice coil wires in the radial direction is prevented. If the holding members are also in contact with areas of the voice coil running transversely to the loudspeaker axis, wire detachment in the direction of the loudspeaker axis is also excluded. In this context, it should be noted that the last effect of the holding members can also be realized by a special shape of the voice coil bobbin.
  • the holding members and the voice coil support are formed in one piece, the securing of the voice coil brought about by the holding members can be implemented particularly easily.
  • the tab-like shape of the holding members has the advantage that they are given their holding function in relation to the voice coil by simple bending.
  • a particularly simple type of connection of holding members and voice coil former is created if, according to claim 3, the holding members and the voice coil former are formed from an ultroweldable metal, since in this case the connection of the holding members and voice coil former can be carried out at least partially as ultrasonic welding.
  • a purely mechanical connection of holding members and voice coil bobbins is realized if, according to claim 4, the holding links formed on the edge of the voice coil bobbin penetrate with their free ends openings which are formed in the voice coil bobbin and are bent on the inside of the voice coil bobbin.
  • FIG. 1 shows a section through a tubular coil former 10.
  • a circumferential groove 11 is formed, in which the voice coil 12 is wound.
  • the groove 11 which is completely filled with the windings of the voice coil 12, is closed with a holding member 13 in the form of a band 13.1. This band 13.1 does not completely close the groove 11.
  • the length of the band 13.1 is selected such that when the band 13.1 is placed around the outer jacket 14 of the voice coil bobbin 10 to close the emergency 11, the two ends of the band 13.1 do not come into contact with one another, but a narrower one The distance between the two ends of the circulating belt 13.1 remains (not shown in FIG. 1).
  • the band 13.1 is connected to the areas which overlap the groove 11 in the direction of the loudspeaker axis with the outer jacket 14 of the voice coil bobbin 10.
  • the side of the band 13.1 facing the voice coil 12 bears against the windings of the voice coil 12.
  • all figures have not shown that the holding members 13 rest against the voice coil bobbin 10 and the voice coil 12 without any distance.
  • a voice coil bobbin 10 shown in FIG. 1 takes place in such a way that the coil wire, which is provided with insulation and coated with baked enamel, is first wound into the groove 11 to form the voice coil.
  • the groove 11 can be closed with the band 13.1 and then the voice coil can be caked or initially bake and then close the groove 11 with the tape 13.1.
  • a particularly stable unit of voice coil carrier 10 and voice coil 12 can be formed if the voice coil carrier 10 is also at least in the region of the groove 11 and / or the band 13.1 on the side which faces the voice coil 12 is coated with baking varnish.
  • the voice coil former 10 and the band 13.1 are formed from aluminum and connected to one another by using the ultrasonic welding technique.
  • the exemplary embodiment shown in FIG. 2 differs from the exemplary embodiment according to FIG. 1 in that the voice coil former 10 has no circumferential groove, but the voice coil 12 wound around the outer jacket 14 is encased by a holding member 13.2, which is essentially U-shaped and is connected to the outer jacket 14 of the voice coil bobbin 10.
  • the holding member 13.2 surrounding the outer jacket 14 except for a narrow gap and the voice coil former 10 are connected to one another using ultrasonic welding technology.
  • FIG. 3a shows a voice coil carrier 10 in section, on the outer jacket 14, the voice coil 12 is wound.
  • the left side of the illustration according to FIG. 3a shows that 10 tab-shaped holding members 13.3 are formed on the free edge 16 of the voice coil bobbin.
  • the latter is illustrated in more detail by a development of the voice coil bobbin 10 in FIG. 3b.
  • the free ends 17 of the tab-shaped holding members 13.3 are connected to the outer jacket 14 of the voice coil former 10 in the manner already illustrated.
  • a bent holding member 13.3, which is bent and connected to the outer casing 14 of the voice coil bobbin 10, can be seen on the right-hand side of the illustration according to FIG. 3a.
  • FIG. 4a + b differs from that according to FIG. 3a + b in that the tab-shaped holding members 13.3 are connected to the inner jacket 18 of the voice coil bobbin 10.
  • openings 19 are formed in the outer surface of the voice coil bobbin 10 through which the free ends 17 of the tab-shaped holding members 13.3 are guided before they are connected to the inner jacket 18 of the voice coil bobbin 10.
  • the connection is realized in that the free end 17 of the holding member 13.3 is bent with the part which penetrates the opening 19 in the direction of the speaker axis 15. The latter is in the right half of Figure 4a shown for a holding member 13.3.
  • the holding members 13.4 and the voice coil bobbin 10 are not formed in one piece in FIG. 5a + b.
  • the voice coil former 10 has a plurality of openings 19 which are arranged in two rows. The distance between the openings 19 of the two rows corresponds approximately to the winding width of the voice coil 12 on the voice coil carrier 10.
  • the holding members 13.4 are essentially U-shaped, as clearly shown in FIG. 5a on the left side. If the voice coil 12 is formed on the outer jacket 14 of the voice coil former 10, the holding members 13.4 are moved in the direction of the arrow onto the voice coil former 10.
  • leg spacing of the U-shaped holding members 13.4 corresponds to the spacing of the openings 19 in the direction of the loudspeaker axis 15, these penetrate into the openings 19.
  • the leg ends 17 with the parts that penetrate the openings 19 are bent in the direction of the loudspeaker axis 15, so that they rest on the inner jacket 18 of the voice coil bobbin 10.
  • the latter is shown in Figure 5a on the right side for a holding member 13.4.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP95107545A 1994-06-01 1995-05-18 Support de bobine mobile pour haut-parleur. Withdrawn EP0685984A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4419250 1994-06-01
DE4419250A DE4419250A1 (de) 1994-06-01 1994-06-01 Schwingspulenträger für Lautsprecher

Publications (2)

Publication Number Publication Date
EP0685984A2 true EP0685984A2 (fr) 1995-12-06
EP0685984A3 EP0685984A3 (fr) 1996-01-31

Family

ID=6519587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107545A Withdrawn EP0685984A3 (fr) 1994-06-01 1995-05-18 Support de bobine mobile pour haut-parleur.

Country Status (4)

Country Link
US (1) US5647014A (fr)
EP (1) EP0685984A3 (fr)
JP (1) JPH0856398A (fr)
DE (1) DE4419250A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT404206B (de) * 1996-11-20 1998-09-25 Harman Int Ind Verfahren zur herstelllung von spulen
JPH10285690A (ja) * 1997-04-01 1998-10-23 Sony Corp 音響変換器
KR100598642B1 (ko) * 1998-10-14 2006-07-07 가부시키가이샤 도모에가와 세이시쇼 반사방지재료 및 그것을 사용한 편광 필름
JP3979509B2 (ja) * 1998-12-04 2007-09-19 パイオニア株式会社 スピ―カ―装置
US6721435B2 (en) * 2000-02-22 2004-04-13 Babb Laboratories Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion
CN2523162Y (zh) * 2002-01-28 2002-11-27 斯贝克电子（嘉善）有限公司 能防止散圈的音圈
US7155028B2 (en) * 2004-11-24 2006-12-26 Sonodyne Taiwan Co., Ltd. Voice coil mounting structure
FR2941837B1 (fr) 2009-02-02 2016-09-16 Orkidia Audio Equipage mobile et transducteur electrodynamique pourvu d'un tel equipage mobile.
EP2732639A4 (fr) * 2011-07-12 2015-06-10 Strata Audio LLC Raidisseur de support de bobine acoustique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2010529A (en) * 1930-05-26 1935-08-06 Rca Corp Electro dynamic moving system
DE709374C (de) * 1939-01-12 1941-08-14 Telefunken Gmbh Spulenkoerper fuer die Schwingspule elektrodynamischer Lautsprecher hoher Leistung
US2538691A (en) * 1948-07-19 1951-01-16 Richard K Y Kim Voice coil for radio loud-speakers
DE1174364B (de) * 1963-08-14 1964-07-23 Telefunken Patent Schwingspule fuer elektroakustische Wandler
SU565414A1 (ru) * 1975-01-16 1977-07-15 Предприятие П/Я Р-6947 Динамический громкоговоритель
JPS5389728A (en) * 1977-01-19 1978-08-07 Sansui Electric Co Loudspeaker unit
AT359572B (de) * 1978-10-05 1980-11-25 Akg Akustische Kino Geraete Membran mit schwingspule fuer elektroakustische wandler
NL8200416A (nl) * 1982-02-04 1983-09-01 Philips Nv Vlakmembraan omzetter en werkwijze voor het vervaardigen van een dergelijke omzetter.
GB2114855B (en) * 1982-02-09 1985-10-23 Standard Telephones Cables Ltd Moving coil transducer
JPS601999A (ja) * 1983-06-16 1985-01-08 Matsushita Electric Ind Co Ltd ボイスコイルの製造方法
US4825533A (en) * 1985-10-11 1989-05-02 Pioneer Electronic Corporation Method of making a voice coil with rectangular coil wire and foil leads
DE3620889A1 (de) * 1986-06-21 1987-12-23 Electronic Werke Deutschland Lautsprecher
JPS63279697A (ja) * 1987-05-11 1988-11-16 Foster Denki Kk スピ−カ用ボイスコイル
DE3730305C1 (de) * 1987-09-10 1989-03-23 Daimler Benz Ag Lautsprecher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE4419250A1 (de) 1995-12-07
JPH0856398A (ja) 1996-02-27
EP0685984A3 (fr) 1996-01-31
US5647014A (en) 1997-07-08

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