Speaker having spacer ring inside frame

Details Speaker having spacer ring inside frame Speaker having spacer ring inside frame

2006-01-31

2006-01-31

Ni, Suhan (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S423000

Reexamination Certificate

active

06993146

ABSTRACT:
A speaker comprises: a magnetic circuit composed of a pot yoke, a magnet, and a pole piece; a diaphragm shaped conical, defining an outer periphery and an inner periphery, and having a surround half-rolled and fixedly disposed at the outer periphery and a voice coil bobbin with a voice coil wound thereon fixedly disposed at the inner periphery; a spider having an outer diameter equal to or larger than the outer diameter of the surround; a frame having the magnetic circuit fixedly disposed at its central opening; and a spacer ring fixedly disposed inside the frame, and having a surround edge receiving portion adapted to fixedly receive the entire outer edge of the surround thereon.

REFERENCES:
patent: 4807295 (1989-02-01), Dombroski
patent: 6095280 (2000-08-01), Proni
patent: 6383654 (2002-05-01), Yabe et al.
patent: 6771792 (2004-08-01), Shirakawa
patent: 2001/0017930 (2001-08-01), Matsudo et al.

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