Hinge

Abstract

A hinge includes: a vehicle body-side hinge member that is provided with a vehicle body attachment portion for attachment to a vehicle body; a back door-side hinge member that is provided with a door attachment portion for attachment to a back door and with a coupling portion extending from the door attachment portion toward the vehicle body-side hinge member, the coupling portion being formed with 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.

1 . A hinge, comprising:
 a vehicle body-side hinge member that is provided with a vehicle body attachment portion for attachment to a vehicle body;   a back door-side hinge member that is provided with a door attachment portion for attachment to a back door and with a coupling portion extending from the door attachment portion toward the vehicle body-side hinge member, the coupling portion being formed with 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.   
     
     
         2 . The hinge of  claim 1 , wherein the reinforcing rib is formed continuously with an edge of the door attachment portion. 
     
     
         3 . The hinge of either  claim 1 , wherein:
 the vehicle body attachment portion is provided with a support wall that extends along a front-rear direction of the vehicle body and that supports the rotational support member; and   the support wall is formed with a step that is displaced in a width direction of the vehicle body and that is coupled to the vehicle body attachment portion.