Elevator car apron

Patent metadata

Field	Value
Publication number	US-11235952-B2
Application number	US-201916531794-A
Country	US
Kind code	B2
Filing date	Aug 5, 2019
Priority date	Aug 10, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Elevator systems are provided. The elevator systems include an elevator car movable along an elevator shaft having a pit floor and a shaft top, the elevator car having a car door lock arranged to enable opening of doors by a landing door lock mechanism when the elevator car is located at a landing and an elevator safety system. The elevator safety system includes a car door lock securing device arranged to prevent manual opening of the elevator car doors when in a first state and permits opening of the elevator car doors when in a second state and a car apron affixed to the car door sill and operable from a stowed state to a deployed state, wherein when the car apron transitions from the stowed state to the deployed state, the car door lock securing device is transitioned from the first state to the second state.

First claim

What is claimed is:

1. An elevator system comprising:
an elevator car movable along an elevator shaft, the shaft having a pit floor and a shaft top, the elevator car having a car door sill;
a car door lock arranged to enable opening of elevator car doors by a landing door lock mechanism when the elevator car is located at a landing; and
an elevator safety system comprising:
a car door lock securing device arranged to prevent manual opening of the elevator car doors when in a first state and permits opening of the elevator car doors when in a second state; and
a car apron affixed to the car door sill and operable from a stowed state to a deployed state,
wherein when the car apron transitions from the stowed state to the deployed state, the car door lock securing device is transitioned from the first state to the second state.

2. The elevator system of claim 1 , wherein the elevator safety system is an electrical system.

3. The elevator system of claim 2 , further comprising an electrical connector electrically connecting operation of the car apron to operation of the car door lock securing device.

4. The elevator system of claim 2 , further comprising a power source.

5. The elevator system of claim 2 , wherein the car apron is a multi-element car apron that is deployable from the stowed state having a stowed length to the deployed state having a deployed length, wherein the deployed length is longer than the stowed length.

6. The elevator system of claim 2 , wherein the car apron comprises a first apron element and a second apron element, wherein the second apron element is fixed to the car door sill and the first apron element is moveable relative to the second apron element.

7. The elevator system of claim 2 , further comprising:
a control unit connected to the car door lock securing device; and
a switch positioned relative to the car apron, wherein when the car apron transitions from the stowed state to the deployed state, the switch is actuated to complete an electrical circuit to the control unit to transition the car door lock securing device from the first state to the second state.

8. The elevator system of claim 7 , further comprising an electrical connector electrically connecting operation of the car apron to operation of the car door lock securing device.

9. The elevator system of claim 7 , further comprising a securing mechanism that operably connects the control unit to the car door lock securing device.

10. The elevator system of claim 9 , further comprising an electrical connector electrically connecting operation of the car apron to operation of the car door lock securing device.

11. The elevator system of claim 1 , wherein the elevator safety system is a mechanical system.

12. The elevator system of claim 11 , further comprising a mechanical actuator mechanically connecting operation of the car apron to operation of the car door lock securing device.

13. The elevator system of claim 11 , wherein the car apron is a multi-element car apron that is deployable from the stowed state having a stowed length to the deployed state having a deployed length, wherein the deployed length is longer than the stowed length.

14. The elevator system of claim 11 , wherein the car apron comprises a first apron element and a second apron element, wherein the second apron element is fixed to the car door sill and the first apron element is moveable relative to the second apron element.

15. The elevator system of claim 1 , wherein the car apron is a multi-element car apron that is deployable from the stowed state having a stowed length to the deployed state having a deployed length, wherein the deployed length is longer than the stowed length.

16. The elevator system of claim 1 , wherein the car apron comprises a first apron element and a second apron element, wherein the second apron element is fixed to the car door sill and the first apron element is moveable relative to the second apron element.

Assignees

• Otis Elevator Co

Inventors

• Trouvain Guillaume
• Schach Clement
• Sirigu Gerard

Classifications

• B66B13/285 Primary

  Toe guards or apron devices · CPC title

• B66B13/24 Primary

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

• B66B5/0031

  for safety reasons · CPC title

• B66B13/08

  guided for horizontal movement · CPC title

• B66B13/16

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