To provide a guide mechanism provided at a door device and constituted to lift and remove a door body from the indoor side when dust or the like is accumulated in a guide groove while preventing the door body from being forcibly lifted and removed from the outdoor side.
An indoor side inner side face 40b of the guide groove 40 is provided with a step part 44 projected toward an outdoor side inner side face 40c of the guide groove, and a guide member 50 is provided with a locking projecting part 55 constituted to project toward the lower side of the step part 44 and locked to a lower part 44c of the step part 44 while abutting on the indoor side inner side face 40b below the step part 44 when the door body is lifted while being pushed toward the indoor side E1. A resin member 57 retractable in the thickness direction E of the door body is interposed between a guide member body 51 and a guide piece 52.
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama