JP5231916B2 - Inclined passenger conveyor safety device - Google Patents

Description

  The present invention relates to a safety device for an inclined passenger conveyor installed in an inclined section such as an escalator or an inclined electric road, and in particular, an inclined passenger conveyor that forms a triangular space in a portion where a moving handrail intersects a stationary structure. It relates to safety devices.

  In an inclined passenger conveyor that forms a triangular space where the moving handrail intersects the stationary structure, the body of the passenger who leans between the stationary structure and the moving handrail (railing) is sandwiched in the triangular space. In order to prevent this, for example, Patent Documents 1 and 2 have already proposed safety devices that provide a triangular guard plate or detect a displacement of the triangular guard plate to notify the danger and stop the operation.

JP 2006-44942 A JP-A-8-217370

  All of the safety devices disclosed in the background art described above install a triangular guard plate in the triangular space where the moving handrail intersects the stationary structure, detect the displacement of this triangular guard plate and issue an alarm or stop operation It is something to let you.

  However, since the triangular guard plate is formed of, for example, another thick acrylic plate so as not to be easily deformed for safety, it has a considerable weight. Therefore, even if a child in the lower grades of elementary school leans over and hits the triangular guard plate, the triangular guard plate is not easily displaced, and it is difficult to quickly detect the displacement.

  Therefore, it is conceivable to form the triangular guard plate from a lightweight material. When the triangular guard plate is made of a lightweight material, it can be easily displaced by the contact of a child in the lower grades of the elementary school, so that the detection can be facilitated and a warning can be issued quickly or the operation can be stopped.

  However, because the triangular guard plate itself is lightweight, even if a passenger of elementary school age or older touches it for a while, the triangular guard plate easily displaces, and even if it does not get out, it issues an alarm or stops driving There is a problem. In addition, because the triangular guard plate itself is lightweight, the triangular guard plate may be naturally deformed during long-term use, or it may be deformed by mischief, and displacement detection that detects the displacement of the triangular guard plate The means may not work.

  An object of the present invention is to provide a safety device for an inclined passenger conveyor that can detect a passenger who has stepped on without displacing a triangular guard plate.

  In order to achieve the above object, the present invention suspends an oscillating body having a fulcrum at the upper end on the lower floor side of the triangular guard plate from the stationary structure side, and inclines the oscillating body on a fixed portion facing above the oscillating body. Is provided, and alarm means for issuing an alarm based on the output from the detection means is provided.

  In this way, since the swinging body with the fulcrum at the upper end is suspended, when a younger elementary school child leans down, it will come into contact with the lower part away from the fulcrum of the rod-like moving body. The conductor is easily displaced, and the amount of displacement increases. As a result, the displacement detection means can be easily operated. On the other hand, passengers older than elementary school age who are taller tend to come into contact with the middle part in the height direction of the rod-shaped moving body, and the middle part in the height direction of the rod-shaped moving body approaches the fulcrum, so the swinging body is slightly larger. If it is not force, it will be difficult to displace. Therefore, even if the swinging body is touched with a light feeling due to mischief or the like, the amount of displacement is small and there is no displacement enough to activate the displacement detecting means.

  As explained above, passengers who have stepped on without being displaced can be detected, and the swinging body can be easily displaced for short passengers. It can prevent a child of lower grades from being caught in a triangular space.

  Hereinafter, an embodiment of a safety device for an inclined passenger conveyor according to the present invention will be described by taking the safety device for an escalator shown in FIGS. 1 to 3 as an example.

  The escalator 1 includes a frame 4 installed across the upper floor 2 and the lower floor 3, a plurality of steps 5 that are guided in the frame 4 and connected in an endless manner and circulate, and the steps 5, a balustrade 6 erected from the frame 4 facing both sides in the width direction, a moving handrail 7 that circulates and moves around the periphery of the balustrade 6 at a synchronous speed with the step 5, and the step 5 and the moving handrail 7. Control means 8 is provided for controlling a driving device (not shown) to be driven and detecting signals from various safety devices (not shown) to activate an alarm means or stop the driving apparatus.

  Since the escalator 1 configured in this manner is installed so as to intersect the ceiling portion 2C of the upper floor 2 which is a stationary structure, a triangular space 9 is formed between the ceiling portion 2C and the moving handrail 7. Is done. And if the child who got on the escalator 1 moved to the upper floor 2 side while leaning over, the body which got on at the narrow angle part of the triangular space 9 between the ceiling part 2C and the moving handrail 7 is pinched. It can be dangerous.

  Therefore, a safety device 10 is provided in the triangular space 9 to call attention or stop the operation of the escalator 1 before the body is sandwiched between the narrow corners of the triangular space 9.

  The safety device 10 according to the present embodiment includes an attachment frame 11 that is fixed to the ceiling portion 2C, a triangular guard plate 12 that is suspended from the upper end of the attachment frame 11, and a lower floor 3 of the triangular guard plate 12. A long guide frame 13 supported by the triangular guard plate 12 on the side, and a vertically long swing that is guided by the guide frame 13 and supported by the mounting frame 11 with the support shaft 14 hanging down. A moving body 15 and a micro switch (detecting means) 16 installed on the guide frame (fixed portion) 13 facing the side closer to the support shaft 14 of the rocking body 15 are provided facing the rocking body 15. Yes.

  The triangular guard plate 12 is made of, for example, a strong transparent or opaque thick acrylic resin plate. If the triangular guard plate 12 is not easily deformed, it may be formed of a resin plate other than an acrylic resin plate or may be formed of a metal material.

  The guide frame 13 is formed in a U-shape or a U-shape that opens toward the lower floor 3, and the swinging body 15 is suspended from the support shaft 14 in a desired manner.

  The oscillating body 15 is formed in a material and a shape that do not easily deform even if the body collides, and the cross section may be solid or hollow. In addition, by allowing the swinging body 15 to partially face the guide frame 13, the swinging body 15 moves forward and backward only in the direction along the traveling direction of the step 5 around the support shaft 14.

  The microswitch 16 is connected to output a detection signal to the control means 8, and the control means 8 that has received the detection signal issues an alarm or stops the driving device.

  By adopting the above-described configuration, if a short elementary school child rides on the escalator 1 during ascending operation in a state where the child leans out from the moving handrail 7, the lower part of the rocking body 15 is contacted. At this time, the contacted position is a position away from the support shaft L1 by a distance L1, so even with a slight contact force (pressing force) F1, the moment (F1 × L1) becomes large, and the oscillator 15 is as shown in FIG. In addition, it is easily rotated about the support shaft 14 and greatly displaced. As a result, the micro switch 16 installed above operates and outputs the detection signal to the control means 8, and the control means 8 activates the alarm means to generate an alarm, and also stops the driving device to escalate the escalator 1. Stop operation. As a result, the child may receive an impact due to the emergency stop of the escalator 1, but the danger of being injured by colliding with the triangular guard plate 12 is avoided.

  On the other hand, tall passengers in the upper grades of elementary school will not get out of the moving handrail 7, but if they touch the rocking body 15 by mischief or the like, it will be above the position touched by the children of the lower grades of elementary school. The rocking body 15 is touched. When the rocking body 15 is touched upward, the positions are separated from the support shaft 14 of the rocking body 15 by the L2 dimension and the L3 dimension, so the moments are (F2 × L2) and (F3 × L3), respectively. Large contact forces (pressing forces) F2 and F3 are required as compared with the child's contact force (pressing force) F1. As a result, as long as the rocking body 15 is lightly touched, the displacement of the rocking body 15 due to the rotation about the support shaft 14 is small, and the microswitch 16 cannot be operated. As a result, it is possible to avoid issuing an alarm or stopping the operation of the escalator 1 unnecessarily.

  Of course, when a passenger who is taller than the upper grades of elementary school touches the rocking body 15 while leaning out from the moving handrail 7, the passenger has a higher weight than a child of the lower grades of elementary school. The microswitch 16 can be operated by largely displacing the rocking body 15 by the pressures F2 and F3.

  As described above, according to the present embodiment, only the oscillating body 15 is displaced without displacing the heavy triangular guard plate 12, thereby detecting a passenger who has stepped on and giving an alarm or operating the escalator 1. Can be stopped. And since the triangular guard board 12 was made immovable, the mischief which pushes and shakes the triangular guard board 12 can be prevented.

  By the way, in this embodiment, the oscillating body 15 is configured to rotate (advance and retreat) only in one direction by the guide frame 13. However, the oscillating body 15 can be rotated in one direction only by the support shaft 14. In this case, the guide frame 13 can be omitted.

  FIG. 4 shows a first modification of the above-described embodiment, and the same reference numerals as those in FIGS.

  The configuration different from the above embodiment in the present modification is that the rocking body 15 is supported on the guide frame 13 by a plurality of elastic bodies 17A to 17C. The plurality of elastic bodies 17A to 17C are set so that the pressing forces F1 to F3 for deforming the elastic body increase from the bottom to the top of the oscillating body 15, and a microscopic force is formed in the vicinity of the elastic body 17A having a small pressing force F1. A switch 16 is installed.

  The relationship between the pressing forces F1 to F3 of the elastic bodies 17A to 17C is F1 <F2 <F3, and the elastic bodies 17A, 17B, and 17C are interposed at intervals from the lower side to the upper side, and the oscillating body 15 Was supported.

  With the above configuration, when a passenger comes in contact with the lower side of the rocking body 15, the rocking body 15 can be largely retracted into the guide frame 13 with a small pressing force F <b> 1 to operate the micro switch 16. When touched above the middle, the rocking body 15 cannot operate the microswitch 16 unless touched with large pressing forces F2 and F3.

  As a result, an effect equivalent to that of the above embodiment can be obtained.

  In the above-described embodiment and the first modification, the displacement of the oscillating body 15 is configured to be detected by one microswitch 16, but the microswitch 16 that operates according to the inclination angle and the displacement amount of the oscillating body 15 is used. You may make it install two or more. By installing a plurality of microswitches 16 in this way, only a warning means is actuated when a small amount of displacement of the oscillating body 15 is brought to attention, and when a large amount of displacement is detected, the escalator 1 is activated while the alarm means is actuated. The driving device can be stopped.

  Moreover, in the said embodiment and 1st modification, although the triangular guard board 12 is being fixed to the attachment frame 11 which is a stationary structure, it does not necessarily need to be fixed and from the attachment frame 11 so that it may rock | fluctuate. The triangular guard plate 12 may be supported so as to be suspended.

  Further, the guide frame 13 guiding the swinging body 15 so as to advance and retreat only in one direction is integrated with the triangular guard plate 12, but the guide frame 13 is separated from the triangular guard plate 12 and attached to the mounting frame 11. You may make it attach directly. Thus, by separating the guide frame 13 from the triangular guard plate 12, the triangular guard plate 12 can be easily designed. Depending on the installation location of the escalator 1, only the triangular guard plate 12 can be changed in color or displayed every season. You can change the contents.

  In addition, the rocking body 15 can be advanced and retracted only in the direction along the traveling direction of the step 5 by the guide frame 13, but is installed as in the second modification shown in FIGS. Also good. Since the same reference numerals as those in FIGS. 1 to 4 indicate the same components, detailed description thereof will not be repeated.

  That is, for example, a short cylindrical tube frame 18 is fixed to the mounting frame 11, and the swinging body 15 is suspended outside the tube frame 18 via an elastic material 19 at a position concentric with the tube frame 18. In addition, a plurality of micro switches 16A to 16D are installed around the cylindrical frame 18 so as to face the swinging body 15 vertically suspended.

  According to this modification, when the passenger touches the oscillating body 15 in a state where the passenger gets out of the moving handrail 7, the micro switch 16A attached to the triangular guard plate 12 side detects the displacement of the oscillating body. An effect equivalent to that of the embodiment can be obtained. Further, even if the passenger does not get out of the moving handrail 7, the body is pushed when crowded and the body protrudes outward beyond the moving handrail 7 to touch the rocking body 15, or the rocking body 15 is shaken by mischief. In this case, since the micro switch 16B installed on the side away from the moving handrail 7 detects the displacement of the oscillating body 15, the alarm means can be activated to call attention. Further, since the micro switches 16C and 16D detect the displacement of the swing body 15 toward the moving handrail 7 or the lower floor 3 of the swing body 15, the displacement of the swing body 15 in any direction can be detected. it can.

  In the above description, the safety device 10 of the escalator 1 has been described as an example of a safety device for an inclined type passenger conveyor. However, it goes without saying that the safety device according to the present invention can also be applied to an inclined electric road.

1 is a partially longitudinal side view showing an embodiment of a safety device for an inclined passenger conveyor according to the present invention. The partial vertical side view which shows the action-like body of FIG. The schematic side view which shows the escalator which applied the safety device of the inclination type passenger conveyor by this invention. FIG. 6 is a partially longitudinal side view showing a first modification of FIG. 1. FIG. 9 is a partially longitudinal side view showing a second modification of FIG. 1. The cross-sectional enlarged view which follows the AA line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Upper floor, 2C ... Ceiling part, 3 ... Lower floor, 4 ... Frame, 5 ... Step, 6 ... Railing, 7 ... Moving handrail, 8 ... Control means, 9 ... Triangular space, 10 DESCRIPTION OF SYMBOLS ... Safety device, 11 ... Mounting frame, 12 ... Triangular guard plate, 13 ... Guide frame, 14 ... Support shaft, 15 ... Swing body, 16, 16A-16D ... Micro switch (detection means), 17A-17C ... Elastic body.

Claims (1)

  In a safety device for a tilted passenger conveyor installed in a triangular space where the moving handrail of the tilted passenger conveyor intersects with the stationary structure, the triangular guard plate is suspended from the stationary structure. A swinging body that is long in the direction is supported via a plurality of elastic bodies so as to advance and retreat in the traveling direction, and detection means that operates by pressing the elastic body by the rocking body is provided opposite to the bottom of the rocking body, and An alarm means for issuing an alarm based on the output from the detection means is provided, and the pressing force for deforming the plurality of elastic bodies is set to increase as it goes upward in the height direction of the oscillator. A safety device for inclined passenger conveyors.

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