Electronic safety actuator for lifting a safety wedge of an elevator

Patent metadata

Field	Value
Publication number	US-11078045-B2
Application number	US-201815980418-A
Country	US
Kind code	B2
Filing date	May 15, 2018
Priority date	May 15, 2018
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An electronic safety actuation device for braking an elevator car includes a safety brake movable between a non-braking position and a braking position, a first electronic safety actuator operably coupled to the safety brake via a first link member, and a second electronic safety actuator operably coupled to the safety brake via a second link member. Operation of the first electronic safety actuator applies a force to the first link member to move the safety brake from the non-braking position to the braking position. Operation of the second electronic safety actuator applies a force to the second link member to move the safety brake from the non-braking position to the braking position.

First claim

What is claimed is:

1. An electronic safety actuation device for braking an elevator car comprising:
a safety brake having a movable member movable between a non-braking position and a braking position;
a first electronic safety actuator operably coupled to the movable member of the safety brake via a first link member;
a second electronic safety actuator operably coupled to the movable member of the safety brake via a second link member;
wherein operation of the first electronic safety actuator applies a force to the first link member to move the movable member from the non-braking position to the braking position and operation of the second electronic safety actuator applies a force to the second link member to move the movable member from the non-braking position to the braking position.

2. The electronic safety actuation device of claim 1 , wherein the second link member is coupled to the safety brake via the first link member.

3. The electronic safety actuation device of claim 2 , wherein the first link member and the second link member are connected via a pin and slot engagement.

4. The electronic safety actuation device of claim 2 , wherein the first link member is movable relative to the second link member to move the safety brake from the non-braking position to the braking position.

5. The electronic safety actuation device of claim 2 , wherein the second link member is configured to move in conjunction with the first link member to move the safety brake from the non-braking position to the braking position.

6. The electronic safety actuation device of claim 1 , wherein the first electronic safety actuator and the second electronic safety actuator are integrally formed as a single unit.

7. The electronic safety actuation device of claim 1 , wherein the first electronic safety actuator includes a first housing and the second electronic safety actuator includes a second housing, separate from the first housing.

8. The electronic safety actuation device of claim 1 , wherein the first electronic safety actuator further comprises:
a magnetic brake operably coupled to the first link member, the magnetic brake being movable between a first position and a second position; and
an electromagnetic component configured to hold the magnetic brake in one of the first position and the second position.

9. The electronic safety actuation device of claim 1 , wherein the safety brake includes a wedge having a contact surface, the wedge being movable between the non-braking position and the braking position.

10. An electronic safety actuation device for braking an elevator car comprising:
a safety brake movable between a non-braking position and a braking position;
a first electronic safety actuator operably coupled to the safety brake via a first link member;
a second electronic safety actuator including a second link member, the second link member being operably coupled to the safety brake via the first link member;
wherein operation of the first electronic safety actuator applies a force to the first link member to move the safety brake from the non-braking position to the braking position and operation of the second electronic safety actuator applies a force to the second link member to move the safety brake from the non-braking position to the braking position.

Assignees

• Otis Elevator Co

Inventors

• Billard Justin
• Marvin Daryl J
• Khzouz Erik
• Wroblewski Marcin

Classifications

• B66B5/22 Primary

  by means of linearly-movable wedges (B66B5/24 takes precedence) · CPC title

• B66B5/16

  Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well · CPC title

• B66B5/18 Primary

  and applying frictional retarding forces · CPC title

• B66B5/044

  Mechanical overspeed governors · CPC title

• B66B5/06

  electrical · CPC title