Elevator door interlock assembly

Patent metadata

Field	Value
Publication number	US-11046557-B2
Application number	US-201815967846-A
Country	US
Kind code	B2
Filing date	May 1, 2018
Priority date	May 1, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

An illustrative example elevator door interlock includes a latch situated for pivotal movement about a pivot axis between a door locking position and a released position. At least one base is configured to be selectively movable relative to the pivot axis. A plurality of door movement bumpers are supported on the at least one base. Selective movement of the at least one base relative to the pivot axis adjusts an alignment position of the door movement bumpers.

First claim

We claim:

1. An elevator door interlock, comprising:
a latch situated for pivotal movement about a pivot axis between a door locking position and a released position;
a latch bumper supported for movement with the latch between the locking and released positions, the latch bumper being configured to be contacted by a door coupler component for moving the latch toward the released position;
at least one base that is configured to be selectively movable relative to the pivot axis; and
a plurality of door movement bumpers supported on the at least one base, wherein selective movement of the at least one base relative to the pivot axis adjusts a position of the plurality of door movement bumpers relative to the pivot axis.

2. The elevator door interlock of claim 1 , wherein the at least one base is selectively movable horizontally relative to the pivot axis.

3. The elevator door interlock of claim 2 , wherein
the at least one base comprises a bracket including a plurality of slots;
the interlock comprises fasteners at least partially received through the slots; and
the fasteners selectively secure the at least one base in a fixed position relative to the pivot axis.

4. The elevator door interlock of claim 1 , wherein
a first one of the plurality of door movement bumpers is in a first position on the at least one base;
a second one of the plurality of door movement bumpers is in a second position on the at least one base; and
at least one of the first and second positions is adjustable to selectively adjust a spacing between the bumpers.

5. The elevator door interlock of claim 1 , wherein
there is a gap between the plurality of door movement bumpers;
the latch bumper is situated relative to the gap such that the door coupler component contacts the latch bumper and urges the latch into the released position when the door coupler component is at least partially in the gap; and
the latch bumper is situated relative to the gap when the latch is in the released position so that the latch does not carry any load associated with movement of an associated hoistway door.

6. The elevator door interlock of claim 1 , wherein
a first distance separates the latch bumper from a first one of the plurality of door movement bumpers when the latch is in the locking position;
a second distance separates the latch bumper from the first one of the plurality of door movement bumpers when the latch is in the released position;
the first distance is smaller than the second distance; and
the second distance is at least as large as a gap between the plurality of door movement bumpers.

7. The elevator door interlock of claim 6 , wherein the latch bumper is situated relative to the gap when the latch is in the released position so that the latch does not carry any load associated with movement of an associated hoistway door.

8. The elevator door interlock of claim 1 , comprising a bracket and wherein
the bracket is selectively moveable relative to the latch;
the latch bumper is supported on the bracket; and
the bracket is selectively secured to the latch to fix a position of the latch bumper relative to the pivot axis.

9. The elevator door interlock of claim 1 , wherein the plurality of door movement bumpers comprise rollers.

10. The elevator door interlock of claim 1 , comprising
a lock including a switch; and
a switch contact supported on the latch that cooperates with the switch to indicate when the latch is in the locking position; and
wherein
the at least one base is selectively movable relative to the lock and the switch; and
the lock and the switch remain in a fixed position relative to the pivot axis when the at least one base is selectively moved.

11. An elevator door interlock, comprising:
a latch configured for pivotal movement about a pivot axis between a door locking position and a released position;
at least one base that is configured to be selectively movable relative to the pivot axis;
at least one door movement bumper supported on the at least one base and situated to be contacted by a door coupler component for moving an associated hoistway door, wherein selective movement of the at least one base relative to the pivot axis adjusts a position of the at least one door movement bumper relative to the pivot axis; and
a latch bumper supported for movement with the latch between the locking and released positions, the latch bumper being moveable between a first position corresponding to the latch being in the locking position and a second position corresponding to the latch being in the released position, the latch bumper second position being situated relative to the at least one door movement bumper such that the door movement bumper carries any load associated with the door coupler component moving the associated hoistway door and the latch bumper does not carry any of the load associated with moving the associated hoistway door.

12. The elevator door interlock of claim 11 , wherein the at least one base is selectively movable horizontally relative to the pivot axis.

13. The elevator door interlock of claim 11 , wherein
the at least one door movement bumper comprises a plurality of door movement bumpers;
there is a gap between the plurality of door movement bumpers;
the latch bumper is situated relative to the gap such that the door coupler component contacts the latch bumper and urges the latch into the released position when the door coupler component is at least partially in the gap; and
the latch bumper is situated relative to the gap when the latch is in the released position so that the latch does not carry any load associated with movement of the associated hoistway door.

14. An elevator door interlock, comprising:
a latch configured for pivotal movement about a pivot axis between a door locking position and a released position;
at least one door movement bumper situated to be contacted by a door coupler component for moving an associated hoistway door; and
a latch bumper supported for movement with the latch between the locking and released positions, the latch bumper being moveable between a first position corresponding to the latch being in the locking position and a second position corresponding to the latch being in the released position, the latch bumper second position being situated relative to the at least one door movement bumper such that the door movement bumper carries any load associated with the door coupler component moving the associated hoistway door and the latch bumper does not carry any of the load associated with moving the associated hoistway door, wherein
the at least one door movement bumper comprises a plurality of door movement bumpers;
a first distance separates the latch bumper from one of the door movement bumpers when the latch is in the locking position;
a second distance separates the latch bumper from the one of the door movement bumpers when the latch is in the released position;
the first distance is smaller than the second distance; and
the second distance is at least as large as a gap between the plurality of door movement bumpers.

Assignees

• Otis Elevator Co

Inventors

• Tracey Michael J
• Kulak Richard E

Classifications

• B66B13/20 Primary

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

• B66B19/00

  Mining-hoist operation · CPC title

• B66B13/308

  Details of seals and joints · CPC title

• B66B13/12 Primary

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