Holder used in the microphone unit

Details Holder used in the microphone unit Holder used in the microphone unit

2006-05-30

2006-05-30

Le, Huyen (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C381S174000, C381S368000, C381S409000

Reexamination Certificate

active

07054458

ABSTRACT:
In a microphone having a microphone body stored in a substantially cylindrical metal casing, the casing per se is formed as a ground terminal while a plus terminal is disposed in the center of a lower end surface of the microphone body. A holder is formed to have a bottom wall portion extending from a lower end portion of the holder to a lower end surface of the microphone. An outer circumferential edge portion and a center portion of the bottom wall portion are made of electrically conductive rubber so as to serve as first and second electrically conductive portions electrically connected to the two terminals respectively. Sufficient contact areas of the two electrically conductive portions with electrically conductive patterns of an external board is obtained while a sufficient gap is ensured between the two electrically conductive portions.

REFERENCES:
patent: 4456796 (1984-06-01), Nakagawa et al.
patent: 5788516 (1998-08-01), Uggmark
patent: 6217349 (2001-04-01), Konno
patent: 6549636 (2003-04-01), Fujimoto et al.
patent: 0 880 299 (1998-11-01), None
patent: 3244448 (1998-09-01), None

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