To facilitate fitting of a hinge member by fixing a hinge fitting frame made of metal and formed with a hinge fitting groove over the whole length in the longitudinal direction thereof to a side surface of a vertical frame at a hinge fitting side, and fitting a through upper frame for covering an upper end of the hinge fitting frame to an upper part of a frame body.
A recessed groove 8 is formed in a side surface of a vertical frame 1a of a frame body 1 at a hinge fitting side, and a hinge fitting frame 9 made of the aluminum extruded material is fixed to the recessed groove 8. A through upper frame for covering an upper end of the hinge fitting frame is fitted to an upper part of the frame body 1. At the time of fitting a hinge member 14 to a gate door, a back plate 15 is inserted inside of a hinge fitting groove 10 from a lower end of the hinge fitting frame 9, and this back plate 5 is slid upward along the hinge fitting groove 10. With this structure, fitting of the hinge member is facilitated, and the hinge member can be freely fitted to any position.
YOSHIHISA HIROKI
NISHIMOTO TAI
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