To easily, quickly and firmly connect a hinge member to a mounting member by performing the connection by a locking part and a rotation locking part, and supporting the connection by a pawl part so as to be reinforced from both lateral sides.

A hinge member A has rotation locking parts 2, 2 on the rear side, a lateral pair of pawl parts 3, 3 located on both lateral sides thereof, and locking parts 5, 5 on the front side. The locking part 5 of the hinge member A is engagingly locked to the front end of a mounting member B, the rotation locking part 2 of the hinge member A is engagingly locked to the rear end of the mounting member B, and the pawl part 3 is substantially butted to the rear end of the mounting member B. Therefore, the connection of the hinge member A to the mounting member B is performed by the locking part 5 and the rotation locking part 2, and the pawl part 3 reinforces the locked state of the rotation locking part 2 from both lateral sides. Accordingly, the connection of the hinge member A to the mounting member B can be easily and quickly performed, and the connected state can be made extremely strengthened.