Elevator system

Patent metadata

Field	Value
Publication number	US-9394141-B2
Application number	US-201214129749-A
Country	US
Kind code	B2
Filing date	Jun 14, 2012
Priority date	Jun 28, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A shaft door device and a cab door device are included in an elevator system. The shaft door device has a shaft door and a shaft door closer, and the cab door device includes a cab door. The shaft door closer is operatively connected to the shaft door such that a closing force is exerted onto the shaft door. This provides an improved elevator system which allows a quick opening of the shaft door with an energy-efficient and compact door controlling device. This is achieved by including a compensator which can be operatively connected to the shaft door such that the compensator compensates for at least a part of the closing force acting on the shaft door at least in phases during the opening process of the shaft door.

First claim

The invention claimed is:

1. An elevator system, comprising:
a shaft door device including
a shaft door, and
shaft door closing means for closing the shaft door;

a cab door device with a cab door, operatively connected to the shaft door such that a closing force is exerted onto the shaft door;
a belt connected to the cab door; and
compensating means, connected to the belt by a rope and operatively connected to the shaft door, for opposing at least a part of the closing force acting on the shaft door at least in phases during an opening process of at least the shaft door.

2. The elevator system as claimed in claim 1 , wherein of the compensating means and the shaft door closing means is an energy storing system.

3. The elevator system as claimed in claim 2 , wherein only when the cab door device is coupled to the shaft door device can the at least a part of the closing force acting on the shaft door be opposed by the compensating means.

4. The elevator system as claimed in claim 3 , wherein a compensating force exerted onto the shaft door device by the compensating means is at least as large as the closing force at least intermittently during the opening process of at least the shaft door.

5. The elevator system as claimed in claim 4 , wherein the cab door device comprises the compensating means.

6. The elevator system as claimed in claim 5 , wherein the compensating means exerts a locking force on the cab door when the cab door is in the closed position, so that the cab door is held closed.

7. The elevator system as claimed in claim 6 , wherein the cab door device comprises an electric motor which, during the opening process, is operatively connected to the cab door and to the shaft door coupled to the cab door such that both doors can be opened by the electric motor.

8. The elevator system as claimed in claim 6 , wherein the shaft door device comprises an electric motor which, during the opening process, is operatively connected to the shaft door and to the cab door coupled to the shaft door such that both doors can be opened by the electric motor.

9. The elevator system as claimed in claim 8 , wherein the shaft door closing means exerts a closing force onto the shaft door, so that an opened shaft door is closed by the closing force when the shaft door device is not coupled to the cab door device.

10. The elevator system of claim 1 , wherein the compensating means and the rope are configured to apply an opening force on the shaft door only during an opening process of the cab door and a closing force on the shaft door only during a closing process of the cab door.

11. The elevator system of claim 1 , wherein the compensating means only opposes the at least a part of the closing force acting on the shaft door when the cab door is adjacent to the shaft door.

12. A cab door device for an elevator in an elevator shaft having a shaft door, the cab door device comprising:
a cab door, operatively connected to the shaft door such that a closing force is exerted onto the shaft door;
a belt connected to the cab door; and
compensating means connected to the belt by a rope, operatively connected to the shaft door, at least a part of the closing force acting on the shaft door being opposed by the compensating means at least in phases during an opening process of the shaft door.

13. The cab door device of claim 12 , wherein the compensating means and the rope are configured to apply an opening force on the shaft door only during an opening process of the cab door and a closing force on the shaft door only during a closing process of the cab door.

14. The cab door device of claim 12 , wherein the compensating means only opposes the at least a part of the closing force acting on the shaft door when the cab door is adjacent to the shaft door.

Assignees

• Krause Michael
• Krause Uwe
• Sonntag Guido
• Wittkowski Michael
• Siemens Ag

Inventors

• Krause Michael
• Krause Uwe
• Sonntag Guido
• Wittkowski Michael

Classifications

• B66B13/08 Primary

  guided for horizontal movement · CPC title

• B66B13/06

  of sliding doors · CPC title

• B66B13/12 Primary

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