Patent ID: 8714779

Claim:
A joint structure comprising: a plug part for connection to a device; a bracket part pivotally connected to the plug part; at least one side part that provides frictional rotational resistance to keep the plug part in a predetermined position relative to the bracket part; at least one electrical contact member between the at least one side part and the plug part; and at least one connector element that connects the at least one electrical contact member, the at least one side part and the plug part together; wherein the at least one electrical contact member comprises first and second electrical contact members, and wherein the plug part comprises: a plug part base; a first electrically conductive contact plate supported on the plug part base and electrically connected with the first electrical contact member; and a coaxial connection rod affixed to the plug part base, the coaxial connection rod comprising: an inner conductor; an insulator; and an outer conductor electrically connected with the first electrically conductive contact plate, the insulator being arranged between the inner conductor and the outer conductor.