| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problems of a conventional movable platform fence with guide rollers arranged at the top and bottom of a door: the door is supported in a cantilever manner, the loads of the door are concentrated on the upper and lower guide rollers and rails, the guide rollers and rails are likely to be abraded, and the guide rollers and rails are deformed to hinder opening and closing of the door. <P>SOLUTION: In this movable platform fence, an auxiliary roller 4 having a wheel to be brought into contact with the door 2 is provided on the lower side of the opening-side end of a door pocket 1. Thereby, the loads of the door 2 are dispersed, and abrasion of the upper guide roller 12, upper rail 13, lower guide roller 14 and lower rail 15 is reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
