Patent ID: 7267560

Claim:
A condenser microphone connection plug including a microphone case comprising a metal cylinder and having a connector housing section at one end, a 3-pin output connector which has three pins penetrating an electrically insulating pedestal and which is installed in the connector housing section, and a connection plug which is provided on a balanced shield cable and which is connected to the 3-pin output connector when inserted into the connector housing section, the connection plug having a cylindrical insertion portion provided with a metal outer ring which is electrically connected to a shield coated wire in the balanced shield cable and which contacts an inner surface of the connector housing section to electrically connect to the microphone case, wherein a ring-like metal connection member comprising a leaf spring material is placed along an outer surface of the pedestal of the 3-pin output connector, and the metal connection member includes a plurality of contactors arranged like petals and each partly having a bent portion, and wherein the metal connection member has a diameter smaller than an inner diameter of the connector housing section under no load, and when the insertion portion is inserted into the connector housing section, the metal connection member contacts the outer ring and has its diameter increased by a resulting pressing force to electrically connect a free end of each of the contactors to an inner surface of the connector housing section.