Interlock assembly for elevator door and elevator system

Patent metadata

Field	Value
Publication number	US-11724916-B2
Application number	US-202217825727-A
Country	US
Kind code	B2
Filing date	May 26, 2022
Priority date	Jul 27, 2021
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

An elevator door interlock assembly and an elevator system. The elevator door interlock assembly includes: a first base plate on which a common rotating shaft is arranged; a first hanging wheel, which is pivotally connected to the first base plate through the common rotating shaft and guides the first base plate to reciprocate in an opening and closing direction of an elevator door; and a first lock arm, a middle part of which is pivotally connected to the first base plate through the common rotating shaft, so as to rotate between a locked position and a released position when the elevator door is closed.

First claim

What is claimed is:

1. An elevator door interlock assembly, comprising:
a first base plate on which a common rotating shaft is arranged;
a first hanging wheel, which is pivotally connected to the first base plate through the common rotating shaft and guides the first base plate to reciprocate in an opening and closing direction of an elevator door;
a first lock arm, a middle part of which is pivotally connected to the first base plate through the common rotating shaft, so as to rotate between a locked position and a released position when the elevator door is closed;
a second base plate on which a hanging wheel shaft is arranged;
a second hanging wheel, which is pivotally connected to the second base plate through the hanging wheel shaft, and guides the second base plate to reciprocate in the opening and closing direction of the elevator door; and
a second lock arm, which is fixedly connected to the base plate and which is provided with a locking opening thereon;
wherein a lock hook is also provided at a first end of the first lock arm; when the elevator door is closed, the first lock arm rotates until the lock hook and the locking opening are meshed, and a meshing position of the lock hook and the locking opening is collinear with a rotation center of the common rotating shaft.

2. The elevator door interlock assembly according to claim 1 , further comprising:
a first switch plug, which is provided on the first lock arm; and
a first switch socket;
wherein when the elevator door is closed, the first lock arm rotates until the first switch plug is engaged with the first switch socket; an engagement position of the first switch plug and the first switch socket, and the meshing position of the lock hook and the locking opening are collinear with the rotation center of the common rotating shaft.

3. The elevator door interlock assembly according to claim 1 , further comprising:
a second switch plug, which is provided on the second lock arm; and
a second switch socket;
wherein when the elevator door is closed, the first base plate moves in the opening and closing direction of the elevator door until the second switch plug on the second lock arm is engaged with the second switch socket.

4. The elevator door interlock assembly according to claim 1 , further comprising:
an adjustable connecting plate, which has an installation position fixed to a second end of the first lock arm, the installation position being adjustable in a length direction of the first lock arm;
a first door roller, which passes through a middle part of the adjustable connecting plate via a first rotating shaft and is pivotally connected to the first base plate; and
a second door roller, which is pivotally connected to a lower part of the adjustable connecting plate via a second rotating shaft.

5. The elevator door interlock assembly according to claim 4 , wherein one of an end of the adjustable connecting plate and/or the second end of the first lock arm has fixing holes, and the other of the end of the adjustable connecting plate and/or the second end of the first lock arm has first strip holes arranged in a length direction; wherein the adjustment of the installation position of the adjustable connecting plate is realized through the cooperation of the fixing holes and the first strip holes.

6. The elevator door interlock assembly according to claim 5 , wherein the middle part of the adjustable connecting plate has a second strip hole arranged perpendicular to the first strip holes, and the second end of the first lock arm has an adjustment hole; wherein the adjustment of the installation position of the adjustable connecting plate is also realized through the cooperation of the adjustment hole and the second strip hole.

7. The elevator door interlock assembly according to claim 6 , wherein the first rotating shaft passes through the second strip hole of the adjustable connecting plate, and an installation position of the first door roller can be adjusted along a length direction of the second strip hole.

8. The elevator door interlock assembly according to claim 5 , further comprising:
a second rotating shaft arranged at a fixed position at the lower part of the adjustable connecting plate, and the second door roller is pivotally connected to the lower part of the adjustable connecting plate via the second rotating shaft.

9. The elevator door interlock assembly according to claim 1 , wherein the first hanging wheel is arranged between the first base plate and the first lock arm.

10. The elevator door interlock assembly according to claim 1 , further comprising a counterweight, which is arranged at a second end of the first lock arm; wherein the counterweight presses the lock hook to abut against the locking opening relative to the rotating shaft.

11. An elevator system, comprising:
an elevator car having a car door;
a landing door moving in association with the car door; and
the elevator door interlock assembly according to claim 1 ;
wherein when the landing door and the car door moving in association are closed, the first lock arm rotates between the locked position and the released position to maintain the closed state of the landing door and the car door, or release the closed state of the landing door and the car door.

12. The elevator system according to claim 11 , wherein when the elevator door interlock assembly comprises a first switch plug and a first switch socket, the first switch socket is arranged on the landing door and is engaged with the first switch plug in a way of facing downward.

Assignees

• Otis Elevator Co

Inventors

• Mao Meihong
• Qu Honglei
• Long Fei
• Zhang Yaxin

Classifications

• B66B13/12 Primary

  Arrangements for effecting simultaneous opening or closing of cage and landing doors · CPC title

• B66B13/20 Primary

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