Elevator car location zones in hoistway

Patent metadata

Field	Value
Publication number	US-10968075-B2
Application number	US-201515740486-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Jun 30, 2015
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An elevator system ( 10 ) includes a hoistway ( 14 ) having a plurality of landing floors ( 34 ) each landing floor ( 34 ) having a landing floor door ( 36 ). An elevator car ( 12 ) is positioned in and drivable along the hoistway ( 14 ). A controller ( 38 ) restricts operation of the landing floor doors ( 36 ) based on a position of the elevator car ( 12 ) along the hoistway ( 14 ). A method of operating an elevator system ( 10 ) includes driving an elevator car ( 12 ) along a hoistway ( 14 ) of the elevator system ( 10 ) and determining a position of the elevator car ( 12 ) in the hoistway ( 14 ). Operation of a plurality of hoistway landing floor doors ( 36 ) is controlled based on the position of the elevator car ( 12 ) in the hoistway ( 14 ).

First claim

What is claimed is:

1. An elevator system comprising:
a hoistway, the hoistway having a plurality of landing floors each landing floor having a landing floor door;
an elevator car disposed in and drivable along the hoistway; and
a controller to restrict operation of the landing floor doors based on a position of the elevator car along the hoistway;
wherein the hoistway includes a first hoistway zone and a second hoistway zone, such that when the elevator car is positioned in the first hoistway zone the controller allows for opening of a corresponding landing floor door; and
such that when the elevator car is positioned in the second hoistway zone the controller allows for opening of a corresponding landing floor door, without allowing entry of a person into the hoistway via the landing floor door.

2. The elevator system of claim 1 , wherein the first hoistway zone is defined such that the elevator car is positioned in front of the corresponding landing floor door when positioned in the first hoistway zone.

3. The elevator system of claim 1 , wherein the corresponding landing floor door is fully openable when the elevator car is positioned in the first hoistway zone.

4. The elevator system of claim 1 , wherein the second hoistway zone is defined such that a top and or bottom of the elevator car is accessible through the corresponding landing floor door when the elevator car is positioned in the second hoistway zone.

5. The elevator system of claim 1 , wherein the hoistway includes a third hoistway zone, such that when the elevator car is positioned in the third hoistway zone the controller prevents opening of a corresponding landing floor.

6. The elevator system of claim 1 , further comprising a car position reference system operably connected to the controller to determine the position of the elevator car in the hoistway.

7. A method of operating an elevator system comprising:
driving an elevator car along a hoistway of an elevator system;
determining a position of the elevator car in the hoistway; and
controlling operation of a plurality of hoistway landing floor doors based on the position of the elevator car in the hoistway;
wherein the hoistway includes a first hoistway zone and a second hoistway zone, such that when the elevator car is positioned in the first hoistway zone the controller allows for opening of a corresponding landing floor door; and
such that when the elevator car is positioned in the second hoistway zone the controller allows for opening of a corresponding landing floor door, without allowing entry of a person into the hoistway via the landing floor door.

8. The method of claim 7 , further comprising:
comparing the position of the elevator car to two or more predetermined hoistway zones; and
allowing operation of the hoistway landing floor doors based on the predetermined zone in which the elevator car is positioned.

9. The method of claim 7 , further comprising accessing atop and/or bottom of the elevator car through the corresponding landing floor door when the elevator car is positioned in the second hoistway zone.

10. The method of claim 8 , further comprising a third hoistway zone such that when the elevator car is positioned in the third hoistway zone a corresponding landing floor is prevented from opening.

11. The method of claim 8 , further comprising determining the position of the elevator car in the hoistway via a car position reference system.

Assignees

• Otis Elevator Co

Inventors

• Taudou Christophe
• Fonteneau Nicolas
• Schach Clement
• Picard Raphael
• Chopineau Thierry
• Degardin Patrice
• Renard Alexandre

Classifications

• B66B5/0087 Primary

  Devices facilitating maintenance, repair or inspection tasks (devices incorporated in the buffer B66B5/288; railings on top of the car B66B11/0226) · CPC title

• B66B13/24 Primary

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

• B66B11/0005

  Constructional features of hoistways · CPC title