Door system for an elevator car, elevator system and method for evacuating an elevator car

Patent metadata

Field	Value
Publication number	US-12552641-B2
Application number	US-202318843762-A
Country	US
Kind code	B2
Filing date	Feb 15, 2023
Priority date	Mar 11, 2022
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A door system for an elevator car includes: at least one door leaf for closing a partial region of a car opening of the elevator car; and a mounting device that mounts the door leaf on the car slidably in a direction of a sliding axis between an open position, in which the door leaf releases the partial region, and a closed position, in which the door leaf closes the partial region, and additionally mounts rotatably about a rotation axis so that the door leaf, when slid into the closed position and/or into an intermediate position between the open position and the closed position, can be rotated into an emergency open position in which the car opening is released to an extent that the can be evacuated via the car opening.

First claim

The invention claimed is:

1 . A door system for an elevator car, wherein the elevator car is movable in an elevator shaft between several floors and has a car opening, the door system comprising:
a door leaf adapted to close at least a partial region of the car opening when mounted on the elevator car; a mounting device adapted to mount the door leaf on the elevator car for slidable movement of the door leaf in a direction of a sliding axis between an open position, in which the door leaf releases the partial region, and a closed position, in which the door leaf closes the partial region, the mounted door leaf being additionally rotatable about a rotation axis so that the door leaf when in the closed position and/or in an intermediate position between the open position and the closed position is rotatable into an emergency open position in which the door leaf is pivoted into the elevator car and the car opening is released such that the elevator car can be evacuated through the car opening; wherein the mounting device includes a folding part and a sliding part; and wherein the sliding part is adapted to mount on the elevator car to slide in the direction of the sliding axis between the open position and the closed position, wherein the folding part is mounted on the sliding part to rotate about the rotation axis such that the folding part is slidable together with the sliding part, and wherein the door leaf is fastened to the folding part such that the door leaf is rotatable together with the folding part.

2 . The door system according to claim 1 wherein the folding part is elongate and has a first end rotatably connected to the sliding part.

3 . The door system according to claim 1 wherein the folding part is rotatably connected to the sliding part by a mounting bolt that engages partially in the folding part and partially in the sliding part.

4 . The door system according to claim 1 wherein the folding part, in a locked state, is locked to the sliding part preventing rotation of the folding part about the rotation axis, and the folding part, in an unlocked state, is rotatable about the rotation axis.

5 . The door system according to claim 4 including a locking bolt selectively locking the folding part to the sliding part, wherein the locking bolt in the locked state engages partially in the folding part and partially in the sliding part and the locking bolt in the unlocked state does not engage in the folding part and/or does not engage in the sliding part.

6 . The door system according to claim 5 wherein the folding part is elongate and has a first end rotatably connected to the sliding part, and the locking bolt engages partially in a second end of the folding part in the locked state.

7 . The door system according to claim 5 wherein the locking bolt is displaceable between an unlocking position in the unlocked state and a locking position in the locked state, and including a spring mechanism coupled to the locking bolt, the spring mechanism applying a restoring force acting to move the locking bolt to the locking position.

8 . The door system according to claim 7 wherein the locking bolt is connected to an elongate traction means, the locking bolt being displaceable from the locking position into the unlocking position by pulling on the traction means.

9 . The door system according to claim 1 wherein the mounting device includes a further folding part and a further sliding part, wherein the further sliding part is adapted to mount on the elevator car to slide in the direction of the sliding axis between the open position and the closed position, wherein the further folding part is mounted on the further sliding part to rotate about the rotation axis such that the further folding part is slidable together with the further sliding part, and wherein the door leaf is fastened at a first end to the folding part and at a second end to the further folding part such that the door leaf is rotatable together with the folding part and the further folding part.

10 . The door system according to claim 1 including a further door leaf adapted to close a further partial region of the car opening when mounted on the elevator car, and wherein the mounting device is adapted to mount the further door leaf on the elevator car for slidable movement of the further door leaf in the direction of the sliding axis between an open position, in which the further door leaf releases the further partial region, and a closed position, in which the further door leaf closes the further partial region, and/or the mounted further door leaf is rotatable about a further rotation axis parallel to the rotation axis.

11 . An elevator system comprising:
an elevator shaft; an elevator car movable in the elevator shaft between several floors and having a car opening; and the door system according to claim 1 mounted on the elevator car at the car opening, the door being slidable in the direction of the sliding axis between the open position and the closed position and being rotatable about the rotation axis.

12 . A method for evacuating the elevator car of the elevator system according to claim 11 , the method comprising the steps of:
sliding the door leaf into the closed position and/or an intermediate position between the open position and the closed position; rotating the door leaf about the rotation axis into the emergency open position to release the car opening for evacuation of the elevator car through the car opening.

13 . The method according to claim 12 wherein the folding part, in a locked state, is locked to the sliding part preventing rotation of the folding part about the rotation axis, and the folding part, in an unlocked state, is rotatable about the rotation axis, and including unlocking the door leaf by unlocking the folding part and then rotating the door leaf into the emergency open position.

14 . The method according to claim 12 wherein the door leaf is pivoted into the elevator car when rotated into the emergency open position.

15 . The method according to claim 12 wherein the rotation axis is a vertical axis.

16 . A door system for an elevator car, wherein the elevator car is movable in an elevator shaft between several floors and has a car opening, the door system comprising:
a first door leaf and a second door leaf each adapted to close at least an associated partial region of the car opening when mounted on the elevator car; a mounting device for each of the door leaves adapted to mount the door leaves on the elevator car for slidable movement of the door leaves in a direction of a sliding axis between an open position, in which each of the door leaves releases the associated partial region, and a closed position, in which each of the door leaves closes the associated partial region; wherein the mounted first door leaf is additionally rotatable about a rotation axis so that the first door leaf when in the closed position and/or in an intermediate position between the open position and the closed position is rotatable into an emergency open position in which the first door leaf is pivoted into the elevator car and the car opening is released such that the elevator car can be evacuated through the car opening; wherein the mounting device adapted to mount the first door leaf includes a folding part and a sliding part; and wherein the sliding part is adapted to mount on the elevator car to slide in the direction of the sliding axis between the open position and the closed position, wherein the folding part is mounted on the sliding part to rotate about the rotation axis s

Assignees

• Inventio Ag

Inventors

• Lo Jacono Romeo

Classifications

• B66B13/08

  guided for horizontal movement · CPC title

• B66B13/04

  of swinging doors · CPC title

• B66B13/02

  Door or gate operation (of general application E05F) · CPC title

• B66B13/24 Primary

  Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers · CPC title

• B66B5/027 Primary

  to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door · CPC title