JPH0633146B2 - Escalator entrance / exit safety device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an escalator entrance / exit safety device for the purpose of safety when passengers get in and out of an escalator entrance / exit, and in particular, shoes at the feet when a passenger exits the escalator. The present invention relates to an escalator entrance / exit safety device for the purpose of preventing danger when footwear such as shoes is sandwiched between a step and a comb.

[Technical background of the invention and its problems]

Generally, the escalator is as shown in FIG. 7 and FIG.
The driving device 2 assembled to the truss 1 fixed to the upper and lower floors of the building as a supporting structure, and the driving device 2
Step chain 4 wound around the drive sprocket 3 of
A large number of steps 5 connected to the step chain 4 and rotating along a guide rail or the like between the upper and lower floor side entrances and exits like an endless conveyor, and a balustrade 6 standing on both left and right sides, and the balustrade. It is composed of a moving handrail 7 and the like which is rotated along the outer periphery of 6 in synchronization with the step 5. A boarding / alighting board 9 is laid at the upper and lower floor side entrance (not shown) on the same level as the floor 8 of the building, and at the tip of the boarding / alighting board 9 closest to the step 5 side, In order to ensure the safety of passengers' feet at their mouths, the comb 10 is supported and mounted by a comb mounting beam 11.

The comb 10 at the entrance / exit will be described in detail. As shown in FIG. 9, the comb 10 is provided with a screw 1 on the comb mounting beam 11 below the comb 10.
It is fixed by 2, and the tip side of the comb 10 projects forward from the mounting beam 11 and is slightly curved downward, and the tip of the step cleat 5 which is a crosspiece of the surface of the step 5 is attached to the tip thereof.
A comb-tooth-shaped portion 10a is formed which keeps a slight clearance with a and scoops up the passenger's foot.

By the way, there are many passengers on the escalator who usually get on and off the com 10. However, a careless passenger who neglects to get off the escalator neglects to cross the com 1 and rarely wear shoes such as shoes. There was a case where the tip was caught in the gap between the comb 10 and the step 5 and injured. Therefore, recently, for the safety of passengers, the comb 10 is damaged to prevent danger when the footwear is about to be caught. That is, as shown in FIG. 9, the comb 10 is formed with a thin portion 10b on the side closer to the base end so as to be easily broken, and is divided into a plurality of small pieces in the width direction of the escalator so that when the footwear of a passenger is pinched, Com pieces are designed to break.

However, even if the comb 10 is damaged, if the passenger does not immediately move his / her foot to the side of the boarding / alighting board 9, the foot may be directly caught between the comb mounting beam 11 and the step 5, Very dangerous. Therefore, when such a situation occurs, it is desirable to detect the foot caught between the comb mounting beam 11 and the step 5 and immediately stop the operation of the scalator. However, as shown in FIG. The gap between the lower surface of 11 and the surface of the step 5 is very narrow, and it is impossible to provide a detector such as a switch of the safety circuit or its sensor in that space, which is difficult to achieve.

[Object of the Invention]

The present invention has been made in view of the above circumstances. Despite the extremely narrow space between the lower surface of the comb mounting beam and the surface of the step, the detection component can be mounted without any problem, and the passenger's feet are not If it is sandwiched between the lower surface of the comb mounting beam and the stepped surface after damaging the vehicle, it can be reliably detected and the escalator operation can be stopped immediately to ensure the safety of passengers. It is an object of the present invention to provide an escalator entrance / exit safety device.

[Outline of Invention]

In the escalator entrance / exit safety device of the present invention, the gap between the lower surface of the comb mounting beam of the entrance / exit and the surface of the step is very narrow, and it is not possible to directly provide a switch or the like between them. A thin detection bar that can be arranged without being extended is provided in a long position in the escalator width direction and supported at fixed positions by springs at both ends, and the detection bar is provided at a position with a relatively large space at least one side of the detection bar. A detector is provided to stop the operation of the escalator in response to being moved from a fixed position by being pushed by footwear or the like of a passenger sandwiched between the comb mounting beam and the step.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. In the figure, the same components as those shown in FIGS. 7 to 9 are designated by the same reference numerals and the description thereof will be omitted.

First, as shown in FIG. 1, a detection bar 13 is provided in the gap between the lower surface of the comb mounting beam 11 and the surface of the step 5 that moves under the comb mounting beam 11. As shown in FIG. 2, the detection bar 13 is a thin strip plate, and its length L is longer than the lateral width of the step 5, and the thickness h is the lower surface of the comb mounting beam 11 and the surface of the step 5. The dimension is set to be thinner than the space between and, and the whole is made of a synthetic resin molded product having flexibility, and can be bent and deformed relatively easily by an external force. The detection bar 13 extends in the width direction of the escalator so as to straddle the step 5, and the step 5
It is supported in a high fixed position so as not to come into contact with the comb mounting beam 11 so as to be separated from the surface of the step 5 as much as possible, as shown in FIG. As the supporting means, hooks 14 are attached to both ends of the detection bar 13 as shown in FIG.
As shown in the drawing, tension springs 15 are provided respectively, and both tension springs 15 have a proper tension to support the detection bar 13 by pulling it from both ends. The other ends of the tension springs 15 on both ends are fixed to the left and right support plates 17 via pins 16, respectively. Are rotatably provided via pins 19, and in normal times, the tension of tension springs 15 at both ends causes the center line of the detection bar 13 and hooks 14 at both ends thereof, tension springs 15, and pins 16, as shown in FIG. 19 are aligned on a straight line.

Further, the micro switch 20 serves as a detector that stops the operation of the escalator in response to the movement of the detection bar 13 from the fixed position against the tension spring 15, and the micro switch 20 serves as a detector.
They are fixedly attached to the upper surfaces of the left and right support plates 17 so as to be arranged at positions on both sides (on the left and right outer sides of the step 5) with a relatively large space. Each of the micro switches 20 has a normally-closed contact piece 20a, which is the detection bar 1 described above.
3 Engages with the operating piece 21 projecting from the portion of the tension spring 15 which is connected to the hooks 14 at both ends near the connecting end, and the operating piece 2
The contact piece 20 is interlocked with the movement of the detection bar 13 via 1
a opens, and with this, the escalator safety circuit (not shown)
The escalator operation main circuit (not shown) is cut off to stop the operation of the escalator.

The operation of the above-described structure will be described below. First, the normal operation is normally performed in the states shown in FIGS. In the event that a passenger gets his foot caught between the comb 10 and the step 5 and the comb 10 is damaged, the passenger does not move and the foot remains on the lower surface of the comb mounting beam 11 and the surface of the step 5. When it is sandwiched between the foot and the foot A, as shown in FIG.
Since the detection bar 13 is flexible by being pushed by the tip end of each of the left and right sides, it moves backward from the fixed position against the tension springs 15 on both ends while bending as shown in the drawing, and at the same time, the left and right support plates 17 are also pin 19 respectively. It comes to rotate about the fulcrum. Along with this movement, the tension springs 15 at both ends extend, the relative positional relationship between the operating piece 21 and the microswitch 20 protruding near the ends changes, and the operating piece 21 causes the contact piece 20a of the microswitch 20 to move. It is opened so that it is laid down, so that the safety circuit is cut off as described above and the operation of the escalator is immediately stopped, so that the danger to the passengers is avoided.

Further, even if the detection bar 13 is pushed by the foot A of the passenger or is caught on the step 5 for some reason and is cut into two in the middle, the tension springs 15 on both ends have a tension in advance. Since each tension spring 15 contracts so as to attract the detection bar fragments when the cutting is performed, the micro switch 20 is operated via the operating piece 21 in the same manner as in the case of the above expansion, and the escalator is operated. Will come to a stop.

Next, another embodiment of the present invention will be described with reference to FIGS. Here, except for the detection bar 23, the detection bar 23 is the same as that of the above-mentioned embodiment, and the detection bar 23 is made of a synthetic resin molded product having the entire length L in the same manner as described above. It is more than twice as strong as that of the example.
However, with the large thickness H, the lower surface of the comb mounting beam 11 and the step 5
Since the detection bar 23 naturally does not enter the gap between the surface and the surface, the lower half strong portion of the detection bar 23 in the thickness H direction is formed in a comb shape as shown in FIG. That is, the upper surface of the detection bar 23 has a flat shape, but the lower surface has a large number of uneven portions 23a, 23a.
b is formed, and the concavo-convex portions 23a and 23b are in a state of being engaged with the surface cleat 5a of the step 5 while maintaining a slight gap. As a result, the detection bar 23 can have a large apparent thickness H, and when the passenger's foot A is caught, the detection bar 23 can be reliably held even in the slight gap between the lower surface of the comb mounting beam 11 and the surface of the step 5. Since the foot A can be detected, the safety is further improved.

〔The invention's effect〕

Since the present invention has been made as described above, the detection component can be mounted without any problem even though the space between the lower surface of the comb mounting beam at the entrance and exit of the escalator and the surface of the step is very small, and the passenger's If your foot gets caught between the lower surface of the comb mounting beam and the surface of the step after damaging the comb, it can be detected reliably and the escalator can be stopped immediately to ensure the safety of passengers. It will be a safety device for escalator entrance / exit.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention.
1 is a cross-sectional view of the main part of the entrance / exit, FIG. 2 is a perspective view with a part of the detection bar omitted, FIG. 3 is a plan view taken along the line III-III of FIG. 1, and FIG. FIG. 5 is a sectional view corresponding to FIG. 1 showing another embodiment of the present invention, and FIG. 6 is a partial omission of the detection bar used in the same embodiment. FIG. 7 is a perspective view of a part of the entrance / exit of a conventional general escalator, and FIG. 8 is a VIII-VI of FIG.
A sectional view taken along line II and FIG. 9 are enlarged sectional views of the same portion. 1 ... Truss, 2 ... Drive device 1, 3 ... Drive sprocket, 4 ... Step chain, 5 ... Step, 5 ... Step surface cleat, 6 ... Parapet, 7 ... Moving handrail, 8 ... … Building floor, 9 …… Entrance / exit board, 10 …… Com, 10a …… Tip-shaped comb-shaped section, 10b …… Thin section, 11 …… Com mounting beam, 12
...... Screw, 13, 23 …… Detection bar, 14 …… Hook,
15 ... tension spring, 16, 19 ... pin, 17 ... support plate, 18 ... support, 20 ... detector (micro switch), 20a ... contact, 21 ... operating piece, 23a, 23
b ... uneven portion, A ... passenger's foot.

Claims (5)

[Claims] 1. A thin detection bar extending in the width direction of the escalator is supported by springs at both ends in a gap between a comb mounting beam that supports a comb at an entrance / exit of an escalator from below and a step that moves below the comb. Then, the detection bar is provided at a fixed position where it does not come into contact with the step, and the detection bar is pushed at a fixed position by at least one side of the detection bar by the footwear or the like of the passenger sandwiched in the gap between the comb mounting beam and the step. An escalator entrance / exit safety device, characterized in that it is provided with a detector that responds to the movement from the outside to stop the operation of the escalator. 2. The escalator entrance / exit safety device according to claim 1, wherein the detection bar is a flexible synthetic resin molded product. 3. The detection bar according to claim 1 or 2, characterized in that the detection bar has a concavo-convex portion on the lower surface side that engages with the surface cleat of the step while maintaining a slight gap therebetween. Escalator entrance / exit safety device. 4. The escalator entrance / exit safety device according to any one of claims 1 to 3, wherein both ends of the detection bar are supported by tension springs. 5. The escalator entrance / exit safety according to claim 1, wherein the detector is a micro switch which operates via an operating piece interlocked with the movement of the detection bar to open the escalator safety circuit. apparatus.