| 摘要 |
<p>In escalators or moving stairways there exists, between the moving step and the fixedly positioned skirt guard, a latent risk of entrapment or catching of the shoe of the passenger, especially when wearing light footwear. The inventive warning devices are arranged at the side uprights or plates of the step of the escalator and induce the user or passenger, by means of a physically and, possibly additionally, by means of an acoustically perceptible signal, to leave the stepped-on danger zone. Each of the warning devices comprising, for example, two swivelingly or pivotably mounted segments is held in a projecting readiness position, through the force of a spring, in relation to the tread surface and the front surface of the step. When the warning device is stepped upon by the passenger, this warning device is pressed into a flush position with respect to the tread surface of the step and in which position a pin, positioned on one of the segments, is pressed against a profiled guide edge of the related skirt guard. The pin thus glides over the profiled guide edge, during the movement of the step, and causes the step to vibrate. Depending upon the shape of the profiling of the guide edge, an additional acoustically perceptible sound or clatter can be generated.</p> |
