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Title:
LOUDSPEAKER APPARATUS
Document Type and Number:
Japanese Patent JP2005269328
Kind Code:
A
Abstract:

To provide a loudspeaker apparatus adopting the support structure of a damper, whereby a contact or the like between a vibration system and a magnetic circuit system is prevented so as to prevent the occurrence of abnormal sound noise, when the vibration system which includes a voice coil bobbin is subjected to rolling.

In the loudspeaker apparatus, each inner circumferential edge of a conduction damper and an ordinary damper is fixed to a connection member lower part connected to the upper part of a bobbin, and outer circumferential edges of them are fixed to a support member. Further, since a rolling fulcrum P11 of the bobbin is limited within the prescribed winding width d1 of the voice coil, by arranging the conduction damper and the ordinary damper within the prescribed winding width d1 of the voice coil, the rolling fulcrum P11 is lowered, so that the contact between the voice coil and the pot-type yoke can be prevented and the contact between the voice coil bobbin and a plate can be avoided. Thus, the occurrence of abnormal sound noise can be prevented.


Inventors:
WATABE TOMOYUKI
Application Number:
JP2004000080126
Publication Date:
September 29, 2005
Filing Date:
March 19, 2004
Export Citation:
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Assignee:
PIONEER ELECTRONIC CORP
PIONEER TOHOKU CORP
International Classes:
H04R9/04; H04R1/00; H04R7/12; H04R9/02; H04R9/06; H04R11/02; (IPC1-7): H04R9/04; H04R9/02
Attorney, Agent or Firm:
中村 聡延
江上 達夫



 
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