(19)
(11) EP 1 351 548 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.11.2004 Bulletin 2004/45

(43) Date of publication A2:
08.10.2003 Bulletin 2003/41

(21) Application number: 02022733.6

(22) Date of filing: 11.10.2002
(51) International Patent Classification (IPC)7: H04R 9/04
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 28.01.2002 CN 02215494

(71) Applicant: Speaker electronic (Jiashan) Co., Ltd.
Zhejiang 314112 (CN)

(72) Inventors:
  • Zhang, Jiansong
    Jiashan, Zhejiang 314112 (CN)
  • Zhao, Huijun
    Jiashan, Zhejiang 314112 (CN)

(74) Representative: Grosse, Rainer, Dipl.-Ing. et al
Gleiss & Grosse Leitzstrasse 45
70469 Stuttgart
70469 Stuttgart (DE)

   


(54) A loudspeaker voice coil having a coil fixing mechanism


(57) A loudspeaker voice coil having a coil fixing mechanism comprises a cylindrical voice coil bobbin and a coil. The coil fixing mechanism comprises a groove which is formed alone of a sleeve wrapping around and fixed to the outer wall of the voice coil bobbin, or formed of the sleeve together with the voice coil bobbin, and the coil being wound and fixed therein. This groove can be formed of the collars formed respectively at the two ends of the sleeve, or alternatively of the collar formed at one end of the sleeve and the collar at the end of the voice coil bobbin attached to the other end of the sleeve. The two ends of the coil are stopped by the collars of the mechanism, which avoids the slackening, and dispersing apart or coming off from the bobbin of the coil despite of high power and high temperature.






Search report