| 摘要 |
PROBLEM TO BE SOLVED: To secure riding comfort of a conveyor device by effectively inhibiting the irregularity of speed of step rollers and to make the whole device thin. SOLUTION: Chevron-shaped or V-shaped curved parts 13 are formed at places located near a driving sprocket 9 of a step guide rail 3 for guiding the movement of step rollers 5 connected with a step chain 7. Accordingly, the irregularity of speed generated in the step rollers 5 as the step rollers 5 engage with the sprocket 9 is absorbed by the curved parts 13, so that the speed of movement of the step rollers 5 moving on the downstream side of the curved parts 13 is kept nearly constant and vibration of steps 4 is inhibited. COPYRIGHT: (C)2003,JPO
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