US Patent 7857643 XLR cable connector

The XLR cable connector comprises a sliding element, by means of whose displacement between a retracted and an advanced end position, the XLR cable connector can be converted between a plug and a socket, and that has a first, a second, a third, and a fourth channel, a first, a second, and a third contact pin that are received by the first, second, and third channel of the sliding element, whereby in the retracted position of the sliding element, these contact pins project from the plug-in-side front face of the sliding element, and in the advanced end position of the sliding element, these contact pins are retracted into the channels of the sliding element.