Nippon Otis Elevator Company

Yuei Co., Ltd.

Kota Ojima

Hideki Arai

Hideki Nakano

Tsuyoshi Sekine

Takami Koyama

Tomoki Hada

To provide a stage-corresponding caster device being entirely compact, able to smoothly and stably work, and able to easily get over a stage end face, a holder main bodyattached to an attached member B and having a pair of left and right side wall portions, a main wheel supporting memberin which the main wheelis pivoted to a lower portionand an upper portionis pivoted to the holder main body, a sub wheel supporting memberin which the sub wheelis pivoted to a front portionand a rear portionis pivoted to the main wheel supporting membercoaxially with the main wheel, and a slide rollerattached to the sub wheel supporting memberon a forward position to the main wheel, are provided; and the holder main bodyhas a guiding grooveinclined backward and downward in side view on the side wall portionto guide the slide roller, the front portionof the sub wheel supporting memberis oscillated downward by contact of the main wheelwith the stage end face Ja, the sub wheelis pressed to the stage upper face Jb, and the main wheelclimbs over the stage end face Ja.

Stage-corresponding caster device

An elevator car () which moves vertically along the hoistway is provided with a roller guide assembly () guided by a guide rail (). The roller guide assembly () is provided with a horizontal fixing shaft () which is fixed to a base member () and rollers () which are supported by the horizontal fixing shaft (). The rollers () are each provided with a roller outer circumference section (), a rolling bearing (), an annular rubber (), and an inner cylinder (). The configuration eliminates the need for a conventional spring or a conventional damper mechanism because the rubber () deforms elastically.

Elevator device and roller guide assembly

Growing community of inventors

Higashiosaka, Japan

Kota Ojima