Patent attributes
A hinge includes: a vehicle body-side hinge member that includes a vehicle body attachment portion for attachment to a vehicle body; a back door-side hinge member that includes a door attachment portion for attachment to a back door and a coupling portion extending from the door attachment portion toward the vehicle body-side hinge member, the coupling portion including a reinforcing rib on both edges in a width direction intersecting an extension direction of the coupling portion; and a rotational support member that couples an end portion, at a side of the vehicle body-side hinge member, of the coupling portion together with the vehicle body-side hinge member, and that supports the vehicle body-side hinge member and the back door-side hinge member so as to allow relative rotation of the vehicle body-side hinge member and the back door-side hinge member.
