An energy / signal transmission structure includes: a movable body (48) having an electrical device (50) and of which at least one component moves in a processing chamber of a machine tool; a robot (34) provided in the processing chamber; a first connector (28) which transmits energy and / or signals and which is provided in the movable body (48) and is electrically connected to the electrical device (50); and a second connector (38) that transmits energy and / or signals and that is provided in the robot (34) and that can be electrically connected to and disconnected from the first connector (28) while the robot (34) is being driven, wherein the first connector (28) and the second connector (38) transmit energy and / or signals from outside to inside or from inside to outside of the electrical device (50).
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