| 摘要 |
<p>The invention has block members (7) for posing limitations on service technicians in performing operations while collapsible handrails (3, 4) to be provided on top (2a) of a passenger car (2) of an elevator system remain collapsed. By means of the members, the service technicians can perform operation only after having assembled the collapsible handrails (3, 4) at the time of maintenance and inspection of the elevator system, thus readily ensuring safety for the service engineers at the time of maintenance and inspection of the elevator system. <IMAGE></p> |
