Title:
WORM GEAR-TYPE DRIVING UNIT, AND ELEVATOR AND ELEVATOR SYSTEM USING WORM GEAR-TYPE DRIVING UNIT
Document Type and Number:
WIPO Patent Application WO/2012/018224
Kind Code:
A3
Abstract:
A lifting device moving along a lifting space within a building comprises: a car unit which moves along a lifting space; a worm driving unit which moves together with the car unit, and in which a rotational shaft is aligned with a moving path of the car unit; and a plurality of worm support units which are provided within the lifting space along the moving path of the car unit on a teeth-interval cycle of the worm driving unit. The lifting device is capable of being lifted by an operation of the worm driving unit relative to the worm support units, and the worm driving unit and the worm support units reduce friction of the lifting device by maintaining low resistance contact, and improve the lifting efficiency.
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Inventors:
KIM NAM YOUNG (KR)
JU SUNG JUN (KR)
JI HYON JO (KR)
JU SUNG JUN (KR)
JI HYON JO (KR)
Application Number:
PCT/KR2011/005704
Publication Date:
May 31, 2012
Filing Date:
August 03, 2011
Export Citation:
Assignee:
KIM NAM YOUNG (KR)
JU SUNG JUN (KR)
JI HYON JO (KR)
COREEELEVATOR CO LTD (KR)
JU SUNG JUN (KR)
JI HYON JO (KR)
COREEELEVATOR CO LTD (KR)
International Classes:
B66B9/02; B66B9/10; B66B11/02
Foreign References:
| US20020125075A1 | 2002-09-12 | |||
| KR20020087039A | 2002-11-21 | |||
| JPH07291553A | 1995-11-07 | |||
| KR100361268B1 | 2002-11-23 |
Other References:
See also references of EP 2602223A4
Attorney, Agent or Firm:
JI, Hyon-Jo (1659-2 Inhundong Gwanak-gu, Seoul 151-832, KR)
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Claims: