Title:
スクリュー式エレベータ
Document Type and Number:
Japanese Patent JP6656089
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to drive opening and closing of a landing door 3 by a drive unit 8 for elevation which rotationally drives a screw shaft 6.SOLUTION: A screw shaft 6 is located in a hoistway 1, and a movable floor 5 is elevated by rotational driving by a drive unit 8. An entrance 2 has a landing door 3, and the door is opened and closed by the drive unit 8 via a door opening/closing mechanism 11, 12. The door opening/closing mechanism 11, 12 comprises a door drive shaft 14, an intermediate shaft 15, a pulley shaft 16, an electromagnetic clutch mechanism 18 and a bi-directional ratchet mechanism 17. A drive pulley 19 for the pulley shaft 16 is in linkage with a door operator. When the screw shaft 6 is caused to perform reciprocating rotary motion at a very small angle by the drive unit 8 at a prescribed floor position, the drive pulley 19 is rotated in one direction by the ratchet mechanism 17, and the landing door 3 is opened.SELECTED DRAWING: Figure 1
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Inventors:
Michihiro Ichihara
Takashi Onodera
Jiro Kajima
Joji Tanikawa
Kazuyoshi Yoshida
Morishige Tomohito
Takashi Onodera
Jiro Kajima
Joji Tanikawa
Kazuyoshi Yoshida
Morishige Tomohito
Application Number:
JP2016112400A
Publication Date:
March 04, 2020
Filing Date:
June 06, 2016
Export Citation:
Assignee:
Nippon Otis Elevator Co., Ltd.
International Classes:
B66B9/02; B66B13/08
Domestic Patent References:
| JP51085146A |
Foreign References:
| US4287967 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi