Patent ID: 7837252

Claim:
A power back door for a vehicle, in which a hatchback-type back door for opening and closing a door opening provided in a back surface of a vehicle body is automatically driven with a drive device, the power back door being connected to the drive device with a drive arm that is turned upwardly and downwardly by the drive device and a rod that is tiltably connected to an end of the drive arm, and when the door is opened and closed, a connection section between the drive arm and the rod entering and exiting from a vertically long opening formed in a side edge defining the door opening, wherein a pair of cover members, each having a lip-shaped end edge, are provided along right and left vertical edges of the vertically long opening such that lip-shaped end edges of said cover members face and contact each other, said cover members being gradually expanded in width so that they have a greater width on the lower side thereof, a contacting position of said end edges of said cover members shifts downwardly and inwardly of said vertically long opening, and an entrance/exit opening through which the connection section enters and exits is formed with lower edges of expanded sections of said cover members.