Condenser microphone connection plug

Electrical connectors – With circuit conductors and safety grounding provision – Direct grounding of coupling part member passing into aperture

Reexamination Certificate

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Details

C439S927000

Reexamination Certificate

active

11269629

ABSTRACT:
The present invention prevents noise attributed to an electromagnetic wave by reducing a high-frequency impedance at the connection between a microphone case and a connection plug of an output cable. The present invention provides a condenser microphone including a microphone case10having a connector housing section13for an output connector20, and a connection plug41which is provided on a balanced shield cable40and which is inserted into the connector housing section13, the connection plug41having an insertion portion42provided with a grounding outer ring44which contacts an inner surface of the connector housing section13to electrically connect to the microphone case, wherein a ring-like metal connection member30is placed on an outer surface of a pedestal21of the output connector20, the ring-like metal connection member30including a plurality of contactors32arranged like petals and each partly having a bent portion, the metal connection member30having a diameter smaller than an inner diameter of the connector housing section13under no load, and when the insertion portion42is inserted into the connector housing section13, contacting the outer ring44and has its diameter increased by a resulting pressing force to electrically connect a free end of each of the contactors32to an inner surface of the connector housing section13.

REFERENCES:
patent: 2523664 (1950-09-01), Minnium et al.
patent: 3670292 (1972-06-01), Tracy
patent: 3825874 (1974-07-01), Peverill
patent: 4408816 (1983-10-01), Knecht
patent: 4440463 (1984-04-01), Gliha et al.

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