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Patent Searching and Data


Title:
LOUDSPEAKER
Document Type and Number:
Japanese Patent JP2002142288
Kind Code:
A
Abstract:

To improve the sound quality of a loudspeaker, particularly, a thin loudspeaker which has a relatively low height as compared with the diameter of a diaphragm and has been difficult conventionally to be improved in sound quality by adjusting the weight distribution between the specific components of the loudspeaker.

The loudspeaker is provided with a frame; a vibrating section including a diaphragm having an inner peripheral section and an outer peripheral section, a voice coil attached to the inner peripheral section of the diaphragm, a damper which couples the voice coil to the frame, and a dust cap attached to the inner peripheral section of the diaphragm; and an edge which couples the outer peripheral section of the diaphragm to the frame. The ratio of the weight of the vibrating section to that of the edge is adjusted to 0.9:1 to 1.5:1.


Inventors:
Kuze, Koichi
Saeki, Shuji
Takewa, Hiroyuki
Application Number:
JP2001000228615
Publication Date:
May 17, 2002
Filing Date:
July 27, 2001
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04R9/02; H04R7/18; H04R9/04; (IPC1-7): H04R7/18; H04R9/02; H04R9/04
Attorney, Agent or Firm:
山本 秀策