Structure of speaker

Details Structure of speaker Structure of speaker

1999-08-03

2001-01-09

Kuntz, Curtis A. (Department: 2743)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S403000, C381S404000, C181S171000

Reexamination Certificate

active

06173065

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to speakers, and more particularly to such a speaker, in which multiple corrugated damping devices are installed to stabilize the sound coil and the paper cone, so as to eliminate a harmonic distortion.
During the operation of a speaker, the sound coil tends to be oscillated, and the paper cone tends to be tilted, thereby causing a harmonic distortion. In order to eliminate this problem, a speaker manufacturer may install a corrugated damping device to stabilize the sound coil. However, this arrangement cannot stabilize the paper cone.
SUMMARY OF THE INVENTION
The present invention has been accomplished to provide an improved structure of speaker, which eliminates the aforesaid problem. According to the present invention, a first corrugated damping device and a second corrugated damping device are arranged on a stepped portion inside the cone rack and vertically spaced by a spacer ring to stabilize the sound coil, and a third corrugated damping device is suspended above the first and second corrugated damping device and secured to a back member at the back side of the cone rack to stabilize the paper cone in the cone rack.


REFERENCES:
patent: 4190746 (1980-02-01), Hardwood et al.
patent: 4379952 (1983-04-01), Kaizer et al.
patent: 4472604 (1984-09-01), Nakamura et al.
patent: 5511131 (1996-04-01), Kohara et al.
patent: 5687247 (1997-11-01), Proni
patent: 5848173 (1998-12-01), Sato et al.
patent: 5848174 (1998-12-01), Ki et al.

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