Elevator landing door unlocking system

Patent metadata

Field	Value
Publication number	US-10822201-B2
Application number	US-201715832934-A
Country	US
Kind code	B2
Filing date	Dec 6, 2017
Priority date	Dec 30, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Elevator landing door lock assemblies and elevator landing doors having a lock with a keyway accessible from a landing of an elevator system, the lock operable to lock and unlock a landing door and a disengageable link operably connected to the lock and configured to prevent unlocking of the landing door when the disengageable link is not engaged. When an elevator car is aligned with the landing door, the disengageble link is engaged and completed such that the lock is operable to unlock and open the landing door, and, when an elevator car is not aligned with the landing door, the lock is not operable.

First claim

What is claimed is:

1. An elevator landing door lock assembly comprising:
a lock having a keyway accessible from a landing of an elevator system, the lock operable to lock and unlock a landing door, the landing door having a landing door coupling with at least two rollers configured to operably engage with a first vane and a second vane of an elevator car door coupling of an elevator car, wherein when the elevator car door coupling is aligned with the landing door coupling the first vane and the second vane are positioned between the at least two rollers; and
a disengageable link operably connected to the lock and configured to prevent unlocking of the landing door when the disengageable link is not engaged,
wherein, when the elevator car is aligned with the landing door, the disengageble link is engaged and completed such that the lock is operable to unlock and open the landing door, and the disengageble link is configured to urge the second vane away from the first vane such that the first and second vanes of the elevator car door coupling contact respective rollers of the at least two rollers of the landing door coupling, and
wherein, when the elevator car is not aligned with the landing door, the lock is not operable.

2. The elevator landing door lock assembly of claim 1 , wherein the disengageable link is an actuator arm operably connected to the lock such that rotation of a key within the keyway actuates the actuator arm.

3. The elevator landing door lock assembly of claim 2 , wherein actuation of the actuator arm urges a portion of the elevator car door coupling into contact with the landing door coupling to enable opening of the landing door.

4. The elevator landing door lock assembly of claim 2 , wherein the actuator arm is a lever that contacts at least one of the first vane and the second vane of the elevator car door coupling.

5. The elevator landing door lock assembly of claim 2 , wherein the actuation of the actuator arm comprises a rotational movement.

6. The elevator landing door lock assembly of claim 1 , wherein the landing door coupling is positioned away from the lock and configured to operate through contact from a portion of the elevator car door coupling.

7. An elevator system comprising:
an elevator car located within an elevator shaft, the elevator car having an elevator car door coupling having a first vane and a second vane;
a landing having a landing door openable on the elevator shaft, the landing door having a landing door coupling having at least two rollers; and
a landing door lock assembly comprising:
a lock having a keyway accessible from the landing and located within the elevator shaft; and
a disengageable link operably connected to the lock and configured to prevent unlocking of the landing door when the disengageable link is not engaged,

wherein, when the elevator car is aligned with the landing door, the first vane and the second vane are arranged between the at least two rollers, the disengageble link is engaged and completed such that the lock is operable to unlock and open the landing door, and the disengageble link is configured to urge the second vane away from the first vane such that the first vane and the second vane of the elevator car door coupling contact respective rollers of the at least two rollers of the landing door coupling, and
wherein, when the elevator car is not aligned with the landing door, the lock is not operable.

8. The elevator system of claim 7 , wherein the disengageable link is an actuator arm operably connected to the lock such that rotation of a key within the keyway actuates the actuator arm.

9. The elevator system of claim 8 , wherein actuation of the actuator arm urges a portion of the elevator car door coupling into contact with the landing door coupling to enable opening of the landing door.

10. The elevator system of claim 8 , wherein the actuator arm is a lever that contacts at least one of the first vane and the second vane of the elevator car door coupling.

11. The elevator system of claim 8 , wherein the actuation of the actuator arm comprises a rotational movement.

12. The elevator system of claim 7 , wherein the landing door coupling is positioned within the elevator shaft and away from the lock, the landing door coupling configured to operate through contact from a portion of the elevator car door coupling.

Assignees

• Otis Elevator Co

Inventors

• Rhouzlane Soufyen
• Mauguen Valerie

Classifications

• B66B13/245

  mechanical · CPC title

• B66B13/20 Primary

  Lock mechanisms actuated mechanically by abutments or projections on the cages · CPC title

• B66B13/06

  of sliding doors · CPC title

• B66B13/16 Primary

  Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position · CPC title