| 摘要 |
PURPOSE:To aim at the promotion of efficiency for smooth traveling by installing a traveling drive wheel and a support roller or the like separately from a door body, and adjusting a rail radial center with a turning shaft center of the drive wheel at a curve part of a ground guide rail. CONSTITUTION:A traveling function on a ground guide rail 6 and a support function from a section rectangular support rail 9 both are secured by a traveling drive wheel 7 and both horizontal and vertical rollers separately from a door body 3. Therefore, a turning shaft center of the drive wheel 7 is adjusted to a rail radial center of a curve part, thereby dispensing with any travel guide of the door body 3 itself. In this connection, the inside of a horizontal plane is made turnable by a traveling driven wheel 25 in the door body 3 at the outermost end and a support roller or the like. In addition, the door body 3, the drive wheel 7, the support roller or the like are made turnable within the horizontal plane by a connecting pin. Accordingly, such a possibility that the door body 3 might be derailed along a direction of the curve part is prevented from occurring, and thus the travel and its guide are made smoothly performable. |
