| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a new movable platform screen door, further improved in quality. <P>SOLUTION: A rectangular sectional space provided with a slit-like upper opening 112 is formed in the upper frame 110 of a getting on and off door 100, and a cog belt 170 is stretched to cover the upper opening 112. The cog belt 170 is drawn apart from the upper opening 112 and bridged to the pulley of a belt driving block 230 in a door pocket 200. On the other hand, a vertical plate 216 hangs down from an upper guide roller block 210 from the upper opening 112 portion from which the cog belt 170 is drawn apart to be uncovered, and a lateral guide roller 220 and a vertical guide roller 222 inscribed in the rectangular sectional space are suspended and inserted. A lower lateral guide roller 254 of a lower guide roller block 250 is inscribed in a downward U-shaped rectangular sectional space provided in the lower frame 110 of the getting on and off door 100 to thereby prevent rolling in opening and closing operation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
