US Patent 7381898 Electrical connection structure

A power supply device for realizing an electrical connection structure includes a wire harness arranged to electrically connect a body with a sliding door and having both ends fixed thereto and a bendable middle portion. A slider is arranged to contact the middle portion of the wire harness and move in synchronization with slide movement to guide the wire harness in a parallel direction. A box-shaped protector having a housing space to house the slider together with the middle portion of the wire harness therein is disposed on the sliding door. The slider is actuated toward the side to which a bent portion protrudes.