Claims
- 1. An elevator guide shoe for guiding an elevator car along a guide rail in an elevator shaft, said guide shoe comprising:a support frame for attachment to the elevator car; a first plurality of permanent magnets attached to said support frame; an intermediate frame; a second plurality of magnets attached to said intermediate frame, wherein said second plurality of magnets face to like poles of said first plurality of magnets, such that a magnetic force Acts in a First plane and tends to create a horizontal spacing between said support frame and said intermediate frame; guides attached to said intermediate frame, said guides for engaging the guide rail; and a suspension system located between said support frame and said intermediate frame, said suspension system allowing translational movement of the intermediate frame relative to the support frame in a second plane different from the first plane tending to create a vertical spacing between said support frame and said intermediate frame.
- 2. The elevator guide shoe according to claim 1, wherein said support frame is substantially box-shaped with an open lateral side, and wherein said intermediate frame is located inside said support frame.
- 3. The elevator guide shoe according to claim 1, wherein said intermediate frame is substantially unshaped, and wherein said intermediate frame is capable of surrounding three sides of the guide rail.
- 4. The elevator guide shoe according to claim 3, wherein said second plurality of magnets are located on three sides of said u-shaped intermediate frame.
- 5. The elevator guide shoe according to claim 1, wherein said suspension system includes an elastic element which permits slight movement of the said intermediate frame relative to said support frame in both the horizontal and vertical directions.
- 6. The elevator guide shoe according to claim 5, wherein said suspension system has a low sound transmission attribute to attenuate a transmission of sound from the intermediate frame to the supporting frame.
- 7. The elevator guide shoe according to claim 1, further comprising:a distance detector detecting a spacing between said supporting frame and said intermediate frame.
- 8. The elevator guide shoe according to claim 1, further comprising:an electromagnet adjacent to said supporting frame, said electro-magnet being capable of generating a magnetic force to act in coordination with a magnetic force produced by said first plurality of magnets.
- 9. The elevator guide shoe according to claim 1, wherein said first and second plurality of magnets include elongated permanent-magnet bars having poles located on opposing elongated side faces.
- 10. The elevator guide shoe according to claim 1, wherein said first plurality of magnets includes a plurality of first elongated permanent-magnet bars having poles located on opposing elongated side faces, wherein said plurality of first elongated permanent-magnet bars are placed side by side in parallel directions on said support frame, with a vertical spacing between adjacent first elongated permanent magnet bars, andwherein said second plurality of magnets includes a plurality of second elongated permanent-magnet bars having poles located on opposing elongated side faces, wherein said plurality of second elongated permanent-magnet bars are placed side by side in parallel directions on said intermediate frame, with a vertical spacing between adjacent second elongated permanent magnet bars.
- 11. The elevator guide shoe according to claim 10, wherein adjacent pairs of said first elongated permanent-magnet bars present opposite magnetic polarities toward said intermediate frame; andwherein adjacent pairs of said second elongated permanent-magnet bars present opposite magnetic polarities toward said support frame.
- 12. The elevator guide shoe according to claim 1, further comprising:a first ferromagnetic backing located between said first plurality of magnets and said support frame; and a second ferromagnetic backing located between said second plurality of magnets and said support surface.
- 13. The elevator guide shoe according to claim 2, wherein said suspension system includes a first suspension element located between a top side of said box-shaped support frame and a top side of said intermediate frame.
- 14. The elevator guide shoe according to claim 13, wherein said suspension system further includes a second suspension element located between a bottom side of said box-shaped support frame and a bottom side of said intermediate frame.
- 15. The elevator guide shoe according to claim 14, wherein said first and second suspension elements include first and second springs, respectively.
Priority Claims (1)
Number |
Date |
Country |
Kind |
974156 |
Nov 1997 |
FI |
|
CONTINUITY DATA
This application is a continuation of PCT/FI98/00862, filed on Nov. 5, 1998.
US Referenced Citations (9)
Foreign Referenced Citations (6)
Number |
Date |
Country |
3289384 |
Jan 1984 |
AU |
B-3289384 |
May 1989 |
AU |
003919850 |
Dec 1989 |
DE |
B082918 |
Jul 1989 |
FI |
5525589 |
Mar 1976 |
JP |
7196273 |
Aug 1995 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/FI98/00862 |
Nov 1998 |
US |
Child |
09/565451 |
|
US |