Elevator Positioning System and Method

• US 20150096844A1
• Filed: 10/05/2013
• Published: 04/09/2015
• Est. Priority Date: 10/05/2013
• Status: Active Grant

• Current Assignee: ThyssenKrupp Elevator Corporation (Thyssenkrupp AG)
• Original Assignee: ThyssenKrupp Elevator Corporation (Thyssenkrupp AG)
• Inventors: Lee, Sang W.
• Granted Patent: US 9,469,501 B2
• Time in Patent Office: Days
• US Class Current: 187/394
• CPC Class Codes: B66B 1/3492 Position or motion detectors or driving means for the detector B66B1/40, B66B1/50 take precedence; length measuring G01B; speed measuring G01P
• CPC Class Codes: B66B 1/36 Means for stopping the cars, cages, or skips at predetermined levels

Abstract

An elevator positioning system includes an optical tape, optical tape clips, and a sensor. The optical tape clips are mountable to various structures within the hoistway. A crossbar of the optical tape clips is located between a sensor and optical tape such that the sensor detects an interruption in the optical tape and signals the detection to an elevator controller. The elevator car can then be controlled to align evenly with the landings associated with the hoistway. Another elevator positioning system includes a sensor and a reflector clip assembly. The reflector clip assemblies are mountable to various structures within the hoistway. A reflector target of the reflector clip assemblies faces the sensor such that the sensor detects the reflector target and signals the detection to an elevator controller. The elevator car can then be controlled to align evenly with the landings associated with the hoistway.

Claims

1. An elevator positioning system for aligning an elevator car with one or more landings, wherein the elevator car is operable to travel within a hoistway to the one or more landings, wherein the elevator positioning system comprises:

a. a sensor configured to attach to a portion of the elevator car;

b. a detectable member, wherein the detectable member is detectable by the sensor; and

c. at least one positioning member, wherein the positioning member is attachable to a select one of a portion of the hoistway and an elevator guide rail, wherein the positioning member is positionable so that the sensor can detect a select one of the presence of the detectable member and the absence of the detectable member, and wherein the sensor signals the detection to an elevator controller of the elevator positioning system to control position of the elevator car within the hoistway relative to the one or more landings.

2. The system of claim 1, wherein the positioning member is attachable without the use of tools.

3. The system of claim 1, wherein the positioning member comprises one or more resilient arms that are configured to grasp the select one of the portion of the hoistway and the elevator guide rail.

4. The system of claim 1, wherein the positioning member comprises one or more guides that are configured to minimize lateral movement of the detectable member while permitting vertical movement of the detectable member.

5. The system of claim 1, wherein the positioning member comprises one or more alignment targets.

6. The system of claim 5, wherein the one or more alignment targets comprise a center target, a lower target, and an upper target.

7. The system of claim 6, wherein the center target, the lower target, and the upper target are spaced apart by about 0.375 inches.

8. The system of claim 1, wherein the positioning member comprises a primary clip and a secondary clip, wherein the secondary clip is configured to attach with the primary clip.

9. The system of claim 8, wherein the primary clip is configured to attach with the select one of the portion of the hoistway and the elevator guide rail.

10. The system of claim 8, wherein the secondary clip comprises one or more resilient arms configured to grasp the primary clip.

11. The system of claim 8, wherein the secondary clip comprises a portion configured to extend across the primary clip without contacting the primary clip.

12. The system of claim 11, wherein the portion of the secondary clip is configured to obstruct the sensor'"'"'s view of the detectable member.

13. The system of claim 1, wherein the positioning member comprises an opening, wherein the detectable member is positioned within the opening.

14. The system of claim 5, wherein the positioning member comprises one or more vertical slots generally adjacent to the one or more alignment targets.

15. The system of claim 5, wherein the detectable member is positioned on the positioning member, wherein detectable member is adjustable relative to the one or more alignment targets.

16. The system of claim 15, wherein the detectable member adjustably attaches with the one or more vertical slots.

17. The system of claim 1, wherein the positioning member located at the bottom floor comprises an extended height compared to the positioning members located at the other floors.

18. The system of claim 17, wherein the sensor is positioned above the positioning member at each floor landing above the bottom floor.

19. The system of claim 1, wherein the detectable member continuously extends the length of travel of the elevator car within the hoistway.

20. The system of claim 1, wherein the detectable member is positioned at discrete locations within the hoistway and does not extend continuously within the hoistway.

21. The system of claim 1, wherein the positioning member is constructed from one or more stamped metal pieces.

22. The system of claim 21, wherein the positioning member is constructed from two stamped metal pieces that are configured to attach together without the use of tools.

23. A method for positioning and aligning an elevator car with a landing, wherein the method comprises:

a. attaching a sensor to the elevator car;

b. attaching at least one positioning member to a select one of a portion of a hoistway and an elevator guide rail, wherein the at least one positioning member attaches without the use of tools, wherein the positioning member is associated with a detectable member;

c. moving the elevator car such that the sensor travels past the at least one positioning member and the detectable member;

d. detecting a select one of the presence of the detectable member and the absence of the detectable member; and

e. signaling the detection to an elevator controller to control position of the elevator car within the hoistway relative to the landing.

24. The method of claim 23, wherein the at least one positioning member comprises one or more alignment targets, wherein a portion of the positioning member is adjustable relative to the one or more alignment targets, the method further comprising adjusting the portion of the positioning member relative to the one or more alignment targets.

25. A detection member for use with a sensor in an elevator hoistway in which an elevator car travels to one or more landings, the detection member comprising:

a. a clip configured to attach to a select one of a portion of a hoistway and an elevator guide rail using one or more resiliently biased arms configured for grasping;

b. a detectable portion; and

c. one or more alignment targets configured to provide a reference for setup and adjustment of a position of the detectable portion relative to the clip.

26. The detection member of claim 25, wherein the detectable portion is configured to be detected as a select one of the detected presence of the detectable portion and the detected interruption caused by the detectable portion.