CHAIR TYPE STAIRWAY ELEVATOR

PURPOSE:To provide a chair type stairway elevator capable of being kept in the horizontal state on a stairway having a different inclination angle or when it has a horizontal landing. CONSTITUTION:This chair type stairway elevator is provided with an upper rocking body 4a and a lower rocking body 4b rotatably fitted to a base 3 fixed with a seat, an upper guide body 14a and a lower guide body 14b arranged at an optional interval, the first upper roller 10 rotatably fitted to the base 3, the second upper roller 12 rotatably fitted to the first upper roller 10 at a slant position, the first lower roller 11 fitted to the upper rocking body 4a and rotatably installed on the lower side of the upper guide body 14a, the second lower roller 13 fitted to the lower rocking body 4b and rotatably installed on the lower side of the lower guide body 14b, a driving body 5 rotatively driving at least one of the first upper roller 10, the first lower roller 11, the second upper roller 12, and the second lower roller 13, and an elastic body 16 connecting the upper rocking body 4a and the lower rocking body 4b. It can be moved while being invariably kept horizontal on an inclined stairway and on a horizontal landing.