Elevator door interlock assembly

Patent metadata

Field	Value
Publication number	US-11034548-B2
Application number	US-201815967797-A
Country	US
Kind code	B2
Filing date	May 1, 2018
Priority date	May 1, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

An illustrative example elevator door interlock includes a first base configured to be supported on a hoistway door component, The first base is situated to be selectively pivoted relative to the hoistway door component. A first bumper is supported on the first base such that pivotal movement of the first base changes a position of the first bumper relative to the hoistway door component. A second base is situated to be selectively moved relative to the hoistway door component. A second bumper is supported on the second base such that selective movement of the second base changes a position of the second bumper relative to the hoistway door component. A latch is situated for pivotal movement about a pivot axis relative to the first base between a door locking position and a released position.

First claim

We claim:

1. An elevator door interlock, comprising:
a first base configured to be supported on a hoistway door component, the first base being situated to be selectively pivoted relative to the hoistway door component;
a first bumper supported on the first base such that pivotal movement of the first base changes a position of the first bumper relative to the hoistway door component;
a second base situated to be selectively moved relative to the hoistway door component;
a second bumper supported on the second base such that selective movement of the second base changes a position of the second bumper relative to the hoistway door component; and
a latch situated for pivotal movement about a pivot axis relative to the first base between a door locking position and a released position,
wherein the first base is selectively pivoted about the pivot axis.

2. The elevator door interlock of claim 1 , wherein
the second base is situated to be selectively pivoted relative to the hoistway door component; and
the second base is selectively pivoted about the pivot axis.

3. The elevator door interlock of claim 2 , wherein
the second base is situated to be selectively pivoted relative to the first base;
the second base is situated to be selectively pivoted relative to the latch;
the second base is selectively set in a fixed position relative to the latch; and
the second base and the second bumper pivot about the pivot axis with pivotal movement of the latch about the pivot axis when the second base is in the fixed position.

4. The elevator door interlock of claim 3 , comprising at least one fastener that selectively secures the second base in the fixed position relative to the latch.

5. The elevator door interlock of claim 4 , wherein when the second base is in the fixed position relative to the latch a mass of the second base urges the latch into the locking position.

6. The elevator door interlock of claim 2 , wherein
the second base is situated to be selected pivoted relative to the latch;
at least one of the second base and the latch includes a boss;
at least one of the other of the latch and the second base includes an arcuate slot;
the boss is at least partially received in the slot; and
relative movement between boss and the slot adjusts a relative position between the latch and the second base.

7. The elevator door interlock of claim 6 , wherein
the boss comprises a threaded rod; and
the elevator door interlock includes a threaded fastener that is received on the threaded rod to selectively secure the second base in a fixed position relative to the latch.

8. The elevator door interlock of claim 1 , comprising a switch that provides an indication whether the latch is in the locking position and wherein
the latch comprises a switch contact that cooperates with the switch when the latch is in the locking position;
the switch contact is separated from the switch when the latch is in the released position; and
the switch remains in a fixed position relative to the pivot axis.

9. The elevator door interlock of claim 1 , comprising at least one fastener that selectively holds the first base in a fixed position relative to the hoistway door component.

10. The elevator door interlock of claim 1 , wherein at least one of pivotal movement of the first base and movement of the second base adjusts a lateral spacing between the first bumper and the second bumper.

11. The elevator door interlock of claim 1 , wherein
there is a first lateral spacing between the first and second bumpers when the latch is in the locking position; and
there is a second, larger lateral spacing between the first and second bumpers when the latch is in the released position.

12. The elevator door interlock of claim 1 , wherein
the first bumper comprises a roller that is rotatable relative to the first base about a first roller axis that remains fixed relative to the first base; and
the second bumper comprises a roller that is rotatable relative to the second base about a second roller axis that remains fixed relative to the second base.

13. The elevator door interlock of claim 1 , wherein
the first base includes at least one boss;
the latch includes at least one arcuate slot;
the boss is at least partially received in the slot; and
at least one end of the slot limits pivotal movement of the latch into the released position.

14. The elevator door interlock of claim 1 , wherein the second base is laterally moveable relative to the pivot axis.

15. An elevator door interlock, comprising:
a first base configured to be supported on a hoistway door component, the first base being situated to be selectively pivoted relative to the hoistway door component;
a first bumper supported on the first base such that pivotal movement of the first base changes a position of the first bumper relative to the hoistway door component;
a second base situated to be selectively moved relative to the hoistway door component;
a second bumper supported on the second base such that selective movement of the second base changes a position of the second bumper relative to the hoistway door component; and
a latch situated for pivotal movement about a pivot axis relative to the first base between a door locking position and a released position, wherein
there is a first lateral spacing between the first and second bumpers when the latch is in the locking position; and
there is a second, larger lateral spacing between the first and second bumpers when the latch is in the released position.

16. An elevator door interlock, comprising:
a first base configured to be supported on a hoistway door component, the first base being situated to be selectively pivoted relative to the hoistway door component;
a first bumper supported on the first base such that pivotal movement of the first base changes a position of the first bumper relative to the hoistway door component;
a second base situated to be selectively moved relative to the hoistway door component;
a second bumper supported on the second base such that selective movement of the second base changes a position of the second bumper relative to the hoistway door component; and
a latch situated for pivotal movement about a pivot axis relative to the first base between a door locking position and a released position, wherein
the first base includes at least one boss;
the latch includes at least one arcuate slot;
the boss is at least partially received in the slot; and
at least one end of the slot limits pivotal movement of the latch into the released position.

Assignees

• Otis Elevator Co

Inventors

• Tracey Michael J
• Kulak Richard E

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

• B66B13/22

  Operation of door or gate contacts · CPC title

• E05Y2900/104

  for elevators · CPC title

• B66B13/30

  Constructional features of doors or gates (of interest apart from this application E06B) · CPC title