JP2012171725A - Safety device of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device of a passenger conveyor capable of detecting whether or not foreign matter has been drawn in between a comb and a tread in a demarcation part even when the demarcation part that rises upward is provided at both ends of the tread in a width direction.SOLUTION: The safety device includes a comb mounting beam 19 disposed at a passenger entrance of the passenger conveyor, the comb 17 mounted on the comb mounting beam 19, a detection member 31 disposed between the tread 2 that moves under the comb mounting beam 19 and the comb 17, and a switch 32 fitted to the comb mounting beam 19 for detecting displacement of the detection member 31. The detection member 31 includes an intermediate detection part 34 that extends along a width direction W of the tread, an outer detection part 35 that extends laterally from both ends in the width direction of the tread in the intermediate detection part 34 and is arranged above the intermediate detection part 34, and an activation part 36 that extends from both ends in the width direction of the tread in the intermediate detection part 34 to the front M1 in the moving direction of the tread and activates the switch 32.

Description

  The present embodiment relates to a safety device for passenger conveyors.

  Passenger conveyors such as escalators and moving walkways are provided with safety devices that prevent foreign objects from being drawn between the comb and the step at the entrance / exit (see, for example, Patent Document 1 below).

  This type of safety device includes a detection bar extending in the width direction of a step between a comb mounting beam to which the comb is mounted and a step that moves below the beam, and when the detection bar moves from a fixed position, Assuming that foreign matter has started to be drawn between the steps, the operation of the passenger conveyor is stopped to prevent the foreign matter from being drawn deeply.

Japanese Patent Laid-Open No. 61-150987

  By the way, in a passenger conveyor, the demarcation part which protrudes upwards may be provided in the both ends of the width direction of a step. If such a demarcation part that protrudes upward is provided on the step, the detection bar described above interferes with the demarcation part, so that the detection bar cannot be disposed at both ends in the width direction of the step. There is a problem that cannot be detected.

  The present invention has been made in consideration of the above points, and even when a demarcation portion that protrudes upward is provided at both ends in the width direction of the step, the comb and the step in the demarcation portion. It is an object of the present invention to provide a safety device for a passenger conveyor that can detect that a foreign object is pulled in between.

  The passenger conveyor safety device of the present embodiment includes a comb mounting beam disposed at a passenger port of a passenger conveyor, a comb mounted on the comb mounting beam, a step moving below the comb mounting beam, and the comb. And a switch that is attached to the comb mounting beam and detects a displacement of the detection member, the detection member extending along a width direction of the step, and the intermediate member The detection unit extends laterally from both ends in the width direction of the step, extends outside the intermediate detection unit, and extends from the both ends in the width direction of the step in the intermediate detection unit to the front in the moving direction of the step. And an actuating part for actuating the switch.

It is a side view showing a passenger conveyor to which a safety device according to an embodiment of the present invention is applied. It is a top view of the safety device concerning one embodiment of the present invention. It is a principal part enlarged plan view of the safety device shown in Drawing 1 in the state where a comb was removed. It is AA sectional drawing of FIG. It is a principal part enlarged view of FIG. It is a front view which expands and shows the principal part of the safety device shown in FIG. It is BB sectional drawing of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  A passenger conveyor 1 illustrated in FIG. 1 is an escalator to which a passenger conveyor safety device (hereinafter referred to as a safety device) 30 according to an embodiment of the present invention is applied. In addition, although this embodiment demonstrates the case of an escalator as a passenger conveyor to which the safety apparatus 30 is applied, the safety apparatus 30 can also be applied to a moving walkway.

  In the following description, the direction in which the passenger descends from the step 2 onto the boarding board 16 is referred to as the forward movement direction M1, and the direction in which the passenger gets into the stage 2 from the boarding board 16 is referred to as the rearward movement direction M2. In the present embodiment, a case where the step 2 moves from the lower floor to the upper floor will be described.

  As shown in FIG. 1, the passenger conveyor 1 circulates a large number of steps 2 between a boarding gate 8 on the upper floor side and a boarding gate 9 on the lower floor side, thereby boarding the tread 2 a of the step 2. The passenger is transported across the upper and lower floors. A pair of left and right balustrades 10 are provided on both sides of the step 2, and a handrail belt 12 that circulates and moves in synchronization with the step 2 is attached to the outer periphery of the balustrade 10.

  On the tread surface 2a of the step 2, as shown in FIGS. 2, 3 and 6, a plurality of cleat ridges 13 extending along the moving direction M of the step are provided in parallel to each other at a predetermined interval. Cleat grooves 14 are formed between adjacent cleat ridges 13.

  Further, among the plurality of cleat ridges 13 provided on the tread surface 2a, the plurality of cleat ridges 13a provided at both ends in the width direction of the step 2 are higher upward than the other cleat ridges 13. The demarcation portion 15 is formed by the cleat ridge 13a that protrudes and protrudes high upward. The demarcation unit 15 is provided in a color (for example, yellow) different from other tread portions, and is sandwiched between passengers to alert them.

  A number of steps 2 are connected by an endless step chain 3 and are arranged in a truss 4 installed under the floor of the building. A sprocket 5 and a drive device 6 having a drive motor and a speed reducer are disposed on the upper floor side of the truss 4, and a sprocket 7 is disposed on the lower floor side of the truss 4. As the sprocket 5 on the upper floor is rotationally driven by the output from the step chain 3, the step chain 3 spanned between the sprocket 7 on the lower floor side circulates and the step 2 moves from the lower floor to the upper floor. Or move from the upper floor to the lower floor.

  At the entrance 8 on the upper floor side and the entrance 9 on the lower floor side, a plurality of boarding boards 16 are laid in line along the step moving direction M, and a comb is attached to the lower surface of the boarding board 16a closest to the stage 2 side. A beam 19 is provided. A comb 17 is attached to the comb mounting beam 19 so as to be positioned at the tip of the boarding / alighting plate 16a, and the step 2 moves in a substantially horizontal direction below the comb mounting beam 19 and the comb 17.

  As shown in FIGS. 4 and 5, the comb 17 is provided with comb teeth 18 that mesh with the cleat ridges 13 and 13 a provided on the tread surface 2 a of the step 2. The feet and foreign objects are scooped up on the boarding / alighting plate 16a to prevent passengers' feet and foreign objects from being caught between the step 2 and the boarding / alighting plate 16a.

  In the passenger conveyor 1 having the above configuration, safety devices 30 are provided at the entrance 8 on the upper floor side and the entrance 9 on the lower floor side, respectively. The safety device 30 stops the operation of the passenger conveyor 1 to prevent further foreign objects from being drawn in when foreign objects are drawn between the comb 17 and the tread surface 2a of the step 2.

  In addition, since the safety device 30 provided in the entrance 8 on the upper floor side and the entrance 9 on the lower floor side has the same structure, hereinafter, the safety device 30 provided in the entrance 8 on the upper floor side. And a description of the safety device 30 provided at the entrance 9 on the lower floor side is omitted.

  As shown in FIGS. 2 to 7, the safety device 30 is provided between the comb mounting beam 19 disposed at the passenger entrance 8, the comb 17 mounted on the comb mounting beam 19, and the step 2 and the comb 17. The detection member 31 and a switch 32 for detecting the displacement of the detection member 31 are provided.

  The comb attachment beam 19 is attached to the truss 4 horizontally along the width direction W of the step 2. On the upper surface of the comb mounting beam 19, a boarding / alighting plate 16a and a comb 17 located behind the boarding / alighting plate 16a in the step moving direction M2 are fixed. The comb 17 is disposed in a comb mounting recess 21 provided at the rear end in the moving direction of the step in the comb mounting beam 19. Further, a recess 33 for disposing the detection member 31 is disposed on the lower surface of the comb mounting beam 19.

  The detection member 31 has a substantially plate shape in plan view, and is disposed on the lower surface of the comb mounting beam 19 so as to face the step surface 2a of the step 2 in the vertical direction, and includes an intermediate detection unit 34, an outer detection unit 35, and an operation unit 36. With.

  The intermediate detection unit 34 has an elongated rectangular shape provided along an inner portion of the demarcation unit 15 provided at both ends in the width direction of the step 2. As shown in FIGS. 4 and 5, the intermediate detection unit 34 is accommodated in a recess 33 provided on the lower surface of the comb mounting beam 19 with a gap S in the moving direction M of the step. It arrange | positions so that it may protrude to movement direction back M2.

  A taper surface 34a is formed on the lower surface of the intermediate detection unit 34. The taper surface 34a decreases in thickness toward the rear side M1 of the step, and the distance from the step surface 2a of the step 2 increases toward the tip of the intermediate detection unit 34. ing. Further, a projecting piece 37 that protrudes upward is provided at the tip of the intermediate detection unit 34, that is, the rear end of the step in the intermediate detection unit 34 in the moving direction.

  As shown in FIGS. 2 and 3, the outer side detection unit 35 extends laterally from both ends in the longitudinal direction of the intermediate detection unit 34, that is, from both ends in the width direction of the step in the intermediate detection unit 34. 2 is disposed so as to face the demarcation unit 15 provided in FIG. As shown in FIG. 6, the outer side detection unit 35 is disposed above the intermediate detection unit 34 and has a stepped shape such that the lower surface 35a of the outer side detection unit 35 increases as it goes outward. A gap is formed between the lower surface 35 a of the detection unit 35 and the demarcation unit 15 of the step 2.

  The actuating portion 36 has a substantially L shape in plan view that extends from both ends in the width direction of the step in the intermediate detection portion 34 to the front M1 in the moving direction of the step and then bends outward in the width direction of the step. A switch 32 provided at 19 is pressed to operate.

  In addition, since the operation part 36 and the switch 32 are provided in the both ends of the intermediate | middle detection part 34 symmetrically respectively, and these structures are the same, below, with reference to FIG.3 and FIG.7, one side is demonstrated below. Only the operation part 36 and the switch 32 will be described.

  The actuating part 36 includes an extended part 38 extending from the both ends in the width direction of the step in the intermediate detecting part 34 to the front M1 in the moving direction of the step, a bent part 39 bent from the extended part 38 outward in the width direction of the step, and a bent part. And a protrusion 40 protruding upward from the tip of the portion 39.

  The extending portion 38 and the bent portion 39 of the operating portion 36 are disposed in a recess 33 provided on the bottom surface of the comb mounting beam 19. A long hole 41 extending along the moving direction M of the step is formed in the extending portion 38. A locking portion 42 that protrudes downward from the concave portion 33 of the comb mounting beam 19 is inserted into the long hole 41. Accordingly, the locking portion 42 guides the detection member 31 so that the extending portion 38 slides within a predetermined range along the moving direction M of the step 2.

  The protrusion 40 is inserted from below into the through hole 20 provided in the comb mounting beam 19 and protrudes upward from the comb mounting beam 19. The protrusion 40 includes a first protrusion 43 fixed to the tip of the bent portion 39 by welding or the like, and a second protrusion 45 and a third protrusion detachably fixed to the first protrusion 43 by a bolt 44. And a protrusion 46.

  The first protrusion 43 protrudes upward from the bent portion 39 and terminates in the through hole 20 provided in the comb mounting beam 19, and is moved backward in the moving direction of the step by the urging means 47 provided in the through hole 20. It is energized to M2. As a result, the detection member 31 is positioned in the step movement direction M while being urged by the urging means 47 when the locking portion 42 provided in the recess 33 abuts on the peripheral wall of the long hole 41. .

  A second protrusion 45 is disposed on the upper surface of the first protrusion 43, and a third protrusion 46 is disposed on the upper surface of the second protrusion 45. The third protrusion 46 is substantially L-shaped in a side view that extends from the second protrusion 45 toward the front M1 in the moving direction of the step and then bends upward, and bends upward. 46 a is in contact with the detection piece 32 a of the switch 32.

  As shown in FIG. 2, the through hole 20 provided in the comb mounting beam 19, the protrusion 40 protruding upward from the through hole 20, and the switch 32 that contacts the protrusion 40 are attached to the truss 4. Passengers using the passenger conveyor 1 cannot be seen because they are stored inside the guard 50.

  In the safety device 30 of the present embodiment having the above-described structure, when getting off from the step 2 to the boarding board 16a at the entrance 8 on the upper floor side of the passenger conveyor 1, between the comb 17 and the tread surface 2a of the step 2 When a foreign object is caught in the step 2 and the foreign object pinched in accordance with the movement of the step 2 is pulled forward M1 in the step movement direction, the foreign object presses the intermediate detection unit 34 or the outer detection unit 35 forward M1 in the step movement direction. As the intermediate detection unit 34 or the outer detection unit 35 is pressed by a foreign object, the detection member 31 is displaced forward M1 in the moving direction of the step against the urging force of the urging means 47, and the third protrusion of the operation unit 36 is detected. The part 46 activates the detection piece 32a of the switch 32. As a result, the safety device 30 detects that foreign matter is drawn between the comb 17 and the tread surface 2a of the step 2, and stops the operation of the passenger conveyor 1.

  As described above, the safety device 30 of the present embodiment extends to the side from the intermediate detection unit 34 provided along the inner portion of the demarcation unit 15 in the step 2, and both longitudinal ends of the intermediate detection unit 34, An outer detection unit 35 disposed above the intermediate detection unit 34, and the outer detection unit 35 is provided to face the demarcation unit 15. Therefore, even when a demarcation part that protrudes upward is provided at both ends in the width direction of the step 2, it is possible to detect that foreign matter has been drawn between the comb 17 in the demarcation part 15. The safety of the passenger conveyor 1 can be improved.

  Further, in the safety device 30 of the present embodiment, since the intermediate detection unit 34 includes the protruding piece 37 that protrudes upward from the rear end in the moving direction of the step, the foreign matter sandwiched between the comb 17 and the tread surface 2a of the step 2 And the contact area with the comb 17 can be detected more reliably.

  Further, in the safety device 30 of the present embodiment, the detection accuracy of the safety device 30 is improved because the lower surface of the intermediate detection unit 34 is provided with the tapered surface 34a that becomes thinner toward the rear in the moving direction of the step. Therefore, even if the contact area between the comb 17 and the foreign matter sandwiched between the tread surface 2a of the step 2 is increased, the space between the tread surface 2a of the step 2 moving below the intermediate detection unit 34 is secured. The intermediate detector 34 and the step 2 are less likely to interfere with each other.

  Furthermore, in the safety device 30 of the present embodiment, the projecting portion 40 that protrudes upward through the through hole 20 formed in the comb mounting beam 19 is provided in a separable manner, so that the assembly workability is improved. be able to.

DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor 2 ... Step 2a ... Tread surface 4 ... Truss 8 ... Passenger exit 9 ... Entrance / exit 13 ... Cleat protrusion 13a ... Cleat protrusion 14 ... Cleat groove 15 ... Demarcation part 17 ... Comb 18 ... Comb tooth 19 ... Comb mounting beam 20 ... through hole 30 ... safety device 31 ... detection member 32 ... switch 32a ... detection piece 33 ... recess 34 ... intermediate detection part 34a ... tapered surface 35 ... outer detection part 36 ... acting part 37 ... projection piece 38 ... extension Protruding part 39 ... Bending part 40 ... Protruding part 41 ... Long hole 42 ... Locking part

Claims (5)

A comb mounting beam arranged at the passenger port of the passenger conveyor;
A comb attached to the comb mounting beam;
A detection member provided between the step that moves below the comb mounting beam and the comb;
A switch mounted on the comb mounting beam and detecting a displacement of the detection member;
The detection member is
An intermediate detector extending along the width direction of the step;
An outer detection unit that extends laterally from both widthwise ends of the step in the intermediate detection unit, and is disposed above the intermediate detection unit;
A safety device for a passenger conveyor, comprising: an actuating portion that extends from both ends in the width direction of the step in the intermediate detection portion to the front in the moving direction of the step to operate the switch.   The said intermediate | middle detection part is provided with the protrusion which protrudes upwards from the moving direction rear end of a step, The safety device of the passenger conveyor of Claim 1 characterized by the above-mentioned.   3. The passenger conveyor safety device according to claim 1, wherein a taper surface having a thickness that decreases toward a rear side in a moving direction of the step is provided on a lower surface of the intermediate detection unit.   The said operating part is provided with the protrusion which penetrates the said comb attachment beam and protrudes upwards, The safety device of the passenger conveyor of any one of Claims 1-3 characterized by the above-mentioned.   The safety device for a passenger conveyor according to claim 4, wherein the protrusion is provided so as to be split.

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