Speaker

Details Speaker Speaker

2011-08-23

2011-08-23

Le, Huyen D (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S398000, C381S404000

Reexamination Certificate

active

08005253

ABSTRACT:
The invention is intended to enhance the driving efficiency in a speaker being less in distortion. In order to achieve the purpose, there is provided a damper disposed rather closer to a magnetic circuit than the diaphragm, of which the inner rim is connected to a voice coil body, and the outer rim of the damper is connected to the frame via the second edge. The second edge is protruded toward the diaphragm or the opposite side thereof. The damper has such a structure that the first protrusion protruding toward the diaphragm and the second protrusion protruding in a direction opposite to the first protrusion are alternately repeated in a plurality of times, and the first protrusion and the second protrusion are different in size from each other. The smaller protrusion out of the first and second protrusions is same in protruding direction as the second edge.

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Chinese Office Action issued in Chinese Patent Application No. 200780000083.2, dated Jan. 10, 2011.
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