A power transfer assembly includes a window balance assembly, a pivot bar, and an electrically conductive pathway. The window balance assembly includes a first portion configured to be fixed in place and a second portion configured to be movable relative to the first portion. The pivot bar is conductively coupled to the second portion of the window balance assembly. And, the electrically conductive pathway extends between the window balance assembly and the pivot bar.

A sliding door device includes a door arm including one end portion rotatably connected to one end portion of a door, and the other end portion movable along a side sill of the vehicle body, a lower slider coupled to the second end portion of the door arm and configured to be rectilinearly movable along the side sill of the vehicle body, a lower arm plate connecting the second end portion of the door arm and the lower slider and configured to perform a rotation and a rectilinear movement when the lower slider moves along the side sill, a door power connection portion provided between the lower slider and one end portion of the door arm, and a vehicle power connection portion provided at a position on the vehicle body corresponding to the door power connection portion and electrically connected to the door power connection portion by a rotation of the door arm.

A power supply apparatus for a door glass for a vehicle that includes the door glass installed on a door of the vehicle and configured to be movable in an upward and downward direction is provided, wherein an operation module is installed on the door glass to use power, and a power source part is installed on the door. The power supply apparatus includes a rail installed on the door and provided with a rail terminal to electrically conduct with the power source part, and a slider provided with a contactor slidably contacting the rail terminal and electrically conduct with the operation module, while moving in the upward and downward direction integrally with the door glass, wherein the contactor and the rail terminal maintain an electrically conductible state at all times regardless of a change in a position of the door glass.

A power supply apparatus for a door glass for a vehicle that includes the door glass installed on a door of the vehicle and configured to be movable in an upward and downward direction is provided, wherein an operation module is installed on the door glass to use power, and a power source part is installed on the door. The power supply apparatus includes a rail installed on the door and provided with a rail terminal to electrically conduct with the power source part, and a slider provided with a contactor slidably contacting the rail terminal and electrically conduct with the operation module, while moving in the upward and downward direction integrally with the door glass, wherein the contactor and the rail terminal maintain an electrically conductible state at all times regardless of a change in a position of the door glass.

A door operator system (1) for opening and closing an opening (2), comprising a door frame (3) comprising a first frame section (4) at a first side (5) of the opening (2) and a second frame section (6) at a second side (7) of the opening (2) and a door (8) arranged to be moved between an open (O) and closed (C) position. The door (8) is connected to the door frame (3). A drive unit (10) mounted on the door (8), whereby the drive unit (10) is moveably connected to first frame section (4) and the drive unit (10) is moveably connected to the second frame section (6), the drive unit (10) comprising at least one motor (11) connected to at least one energy storage device (12) arranged to power the at least one motor (11), the drive unit (10) being arranged to move the door (8) from the closed position (C) to the open position (O). The door operator system (1) further comprises an energy transmitting device (13, 14) disposed in close proximity to the door (8) and an energy receiving device (81) mounted on the door (8), whereby the energy transmitting device (13, 14) is configured to wirelessly transmit energy to the energy receiving device (81) mounted to the door (8), whereby the energy receiving device (81) is operatively connected to the at least one energy storage device (12) for charging said energy storage device (12).

A power transfer assembly includes a window balance assembly, a pivot bar, and an electrically conductive pathway. The window balance assembly includes a first portion configured to be fixed in place and a second portion configured to be movable relative to the first portion. The pivot bar is conductively coupled to the second portion of the window balance assembly. And, the electrically conductive pathway extends between the window balance assembly and the pivot bar.