| 摘要 |
PURPOSE: A sliding door and its wheel are provided to restrain inflow of foreign materials and air by avoiding the formation of a gap between a door frame and a door using height-adjustable wheels and to prevent the displacement of the door during sliding. CONSTITUTION: Hung wheels are formed at the upper end of a door to be combined to a hanging rack of an upper door frame. Herein, the wheel comprises a body(51), a cover(52), rollers(53), a roller cover(54) and a roller support(55). A pair of rollers are rotatably combined to the upper end of the roller support. A fixing unit(51b) having fixing holes(51a) is formed on each side of the body. A lifting body(56) combined to the roller support is rotatably combined in the body, and a sliding wedge(57) rotating the lifting body is formed at a side of the lifting body. The position of the sliding wedge is controlled by a control screw(58). For adjusting the height of the wheel, the lifting body is rotated clockwise by the control screw. Then, the roller support combined to the lifting body moves downward. Therefore, the roller support moves downward and the height of the wheel is lowered. |
