Double deck elevator with adjustable floor height
AssigneeOtis Elevator Company
InventorYoshiaki Naitoh
Life of this patent
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Abstract
A double deck elevator includes a floor height adjusting mechanism that adjusts the distance between the upper and lower decks located within a cage frame. The adjusting mechanism includes a pantograph having an upper portion coupled to the upper deck and lower portion coupled to the lower deck. A central portion of the pantograph is fixed to a portion of the cage frame. A screw is coupled to the upper or lower portion to cause the pantograph to expand and contract to adjust the distance between the upper and lower decks. The screw is driven by a motor located between the upper and lower decks.
Claims10
A variable double deck elevator comprising:
- an upper deck;
- a lower deck;
- a car frame aligning the upper and lower deck in a vertically superimposed relationship for movement therein;
- a pantograph positioned between the upper and lower deck, wherein the pantograph includes upper portion coupled to the upper deck, a lower portion coupled to the lower deck and a center portion located between the upper and lower portions rotatably coupled to a portion of the car frame located between the upper and lower decks;
- a screw shaft rotatably coupled to one of the upper and lower portions;
- a driving means connected to a first end of the screw shaft for rotating the screw shaft to expand and contract the pantograph to position the upper and lower decks within the car frame.
A variable double deck elevator comprising:
- an upper deck;
- a lower deck;
- a car frame aligning the upper and lower deck in a vertically superimposed relationship for movement therein;
- a pantograph positioned between the upper and lower deck, wherein the pantograph includes a first link and a second link in which approximately the center part is rotatably coupled to a portion of the car frame located between the upper and lower deck, a third link and a fourth link respectively coupled to the top ends of said first link and second link, and a fifth link and a sixth link respectively coupled to the bottom ends of said first link and second link, with the top ends of said third link and fourth link being coupled to the upper car and with the bottom ends of said fifth link and sixth link being coupled to the lower car;
- a screw shaft rotatably coupled to one of the top end and the bottom end of the first and second links;
- a driving means connected to a first end of the screw shaft for rotating the screw shaft to expand and contract the pantograph to position the upper and lower decks within the car frame.
Dependencies are inferred from the claim text.