Anti-falling device for elevator door
AssigneeFujitec Co., Ltd.
InventorHiroshi Kashiwakura
Life of this patent
Estimating the term…
Abstract
An anti-falling device for a door of an elevator of the present invention includes: a door hanger; and a first roller and a second roller both provided on the door hanger and arranged to face a lower end surface of the door rail. The first roller is made of a metal is and arranged at a position downwardly away from the lower end surface of the door rail. The second roller is configured to be in elastic contact with the door rail, and is arranged to be held in contact with the lower end surface or arranged at a position closer to the lower end surface than the first roller.
Claims5
An anti-falling device for a door of an elevator, comprising:
- a door hanger that allows the door for opening and closing a car entrance to be slidably mounted on a door rail;
- a hanger roller provided on the door hanger and arranged to face an upper end surface of the door rail;
- a pair of first rollers each made of a metal, provided on the door hanger, and arranged to face a lower end surface of the door rail;
- and
- a second roller provided on the door hanger, arranged to face the lower end surface of the door rail, and configured to be in elastic contact with the door rail,
- wherein the second roller is arranged between the pair of first rollers in an opening and closing direction of the door,
- wherein each of the pair of first rollers is arranged to be away in a vertical direction from the lower end surface of the door rail by a distance, and
- wherein the second roller is arranged to be held in contact with the lower end surface of the door rail, or arranged to be away in the vertical direction from the lower end surface of the door rail by a distance smaller than the distance by which each of the pair of first rollers is away in the vertical direction from the lower end surface of the door rail.
Dependencies are inferred from the claim text.