Patent Publication Number: US-9850631-B2

Title: Fan-shaped pedestrian barrier

Description:
The current state of art does not disclose the existence of pedestrian barriers of the type object of the present invention. 
     Retractable traffic barriers exist in a cylindrical shape or chain (bound to two external columns and sliding in the vertical direction) no type of barriers exist that involve the use of fans in micro-perforated sheet of PVC concealed in the floor. 
     The aim of the present invention described in the following, is that to resolve the problem of the accidental fall from the docks of trains and subway stations through the creation of floor retractable barriers, quickly opened and closed by means of pneumatic actuators and operated by the closing and opening of an electrical circuit. 
     With the open circuit the pedestrian barriers are in the open position in this way inhibiting the access to the tracks and accidental falls from the docks; with the arrival of the train in station, in correspondence of a stroke end, this (now stopped) mechanically closes the circuit instantaneously bringing the barriers in the floor in the retractable closure position and in this way allowing the transit of the passengers. At the restart of the train the same initial state of the pedestrian barrier is re-established. 
     The application of the pedestrian barriers object of the invention could be extended to the demarcation of areas closed the public, for example, in fair stands, the delimitation of walking areas during works, etc. In case of temporary applications the solution of metal casing not enclosed but positioned and blocked on the same floor by suitable means. 
    
    
     
       The pedestrian barrier according to the present invention is illustrated in a preferred embodiment by the figures and drawings attached that respectively illustrate: 
         FIG. 1 —a front view of the metal casing in the opened position; 
         FIG. 2 —a top view of the metal casing in the closed position; 
         FIG. 3 —a cross-view of the metal casing cover; 
         FIG. 4 —a cross-view of the metal casing; 
         FIG. 5 —exploded view of the fan-shaped pedestrian barrier; 
         FIG. 6 —assembled 3D view of the fan-shaped pedestrian barrier. 
     
    
    
     The single module of the pedestrian fan barrier is made of a metal casing  1  15/10 (sheet thickness referred to a mere application example susceptible of variations) of 143.2×2353×56.5 dimensions in mm (D×W×H: dimensions refer to a mere application example subject to change) 
     This casing is divided into two symmetrical longitudinal areas: in one area two base brackets  2  of the pneumatic actuators  3  are positioned, the electropneumatic valve  4  for actuating the pneumatic actuators  3  in a central position and two electromagnetic catches  5 , in said area the actuators  3  are placed in a closing position of the barrier. In the other area the fans in PVC micro-perforated sheet  6  are positioned. 
     The two areas are dived by a “U” shaped metal sheet profile 15/10 (sheet thickness refers to a mere application example susceptible of variations) inside of which run parallel, one on the other, the three pipelines and, precisely, starting from the bottom, the pipeline of compressed air piping  8  connected to the electropneumatic valve  4  serving the two actuators  3 , the electric pipeline  9  connected to the same valve  4  and the electric pipeline  10  connected to the two electromagnetic catches  5 : at the upstream and downstream of this element there are serial connectors  11  for the connection in series of more barriers (for example along a railway platform) 
     The fans of PVC  6  are made of perforated sheet so as to reduce the action of the wind, one end is integral and connected to the metal casing  1 , the other end to the metal case cover  12  always realized in 15/10 sheet (thickness refers to a mere application example susceptible of variations), each of the two casings is hinged to the metal case. 
     The actuators in the process of opening and closing move the crankcase determining the closure and opening of the fans in PVC. The crankcase in the closure position fits perfectly in the case enclosed on the floor and their covering surface is coplanar with the walking floor surface. 
     The two electromagnetic catches  5  are used to tighten the closure of the case cover  12 . On the walking floor surface the crankcase area two longitudinal thin layers in reflective and non slip material  13  are applied. 
     The two fans in the open position are held in tension by means of three elastic straps  14  which have the function to inhibit the free passage between the two fans  6  and to hold in tension the same 
     The present invention is illustrated with reference to a preferred embodiment but is not limited to the said preferred embodiment, on the contrary the scope of rights in accordance with the present invention include all modification, corrections or the like provided that these are in the object of the present invention. 
     The present invention lends itself well to an industrial production in large scale