| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire door which prevents an upper guided part, etc. from being damaged due to expansion of a door body by heat of fire, can restrict movement of the door body in a front/rear width direction, and can suppress reduction of strength of the fire door.SOLUTION: A door body 8 includes: a door main body 12; an upper guided part 13 arranged in an upper part of the door main body 12; and a lower guided part 14 arranged in a lower part of the door main body 12. A guiding body 9 includes: an upper guiding part 18; a lower guiding part 19; and a restriction part 22. The upper guiding part 18 supports the upper guided part 13 from a lower side while restricting movement of the upper guided part 13 in a front/rear width direction X. The lower guiding part 19 supports the lower guided part 14 from a lower side while restricting movement of the lower guided part 14 in the front/rear width direction X. In an expansion support state, the upper guided part 13 separates from the upper guiding part 18 to an upper side, and the restriction part 22 restricts movement of the door main body 12 in a first direction X1 side in the expansion support state and restricts movement of the door main body 12 in a second direction X2 side in the expansion support state.SELECTED DRAWING: Figure 4 |
