JP2004224467A - Entrance safety device for passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily separate a comb after footsteps stop when a part of passenger's shoes, clothes or the like is caught in the comb of a comb plate provided at an entrance of a passenger conveyor. <P>SOLUTION: A tip part of the comb plate 6 at the entrance and a rear end part of the comb 7 are mutually abutted, and an attraction element 8b such as an electromagnet is provided on a comb plate 6 side in the abutting part. An attracted element 8a such as a magnetic body is provided on a comb 7 side corresponding to it to attract and hold mutually by energization of the attraction element 8b. When a part of passenger's shoes or the like is caught between the comb 7 and the footstep 3 during operation of the footsteps 3, the comb plate 6 is displaced upward, and the footsteps 3 stop when a detector 16 operates by a detection lever 12. Here, the attraction element 8b is deenergized to separate the comb 7 from the comb plate 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a safety device provided at an entrance of a passenger conveyor such as an escalator for detecting that a passenger's shoes or the like has been caught.
[0002]
[Prior art]
In the conventional passenger conveyor entrance / exit safety device, when the passenger's foot is caught between the comb and the step, the comb plate rotates upward, the detection lever activates the detection switch, and immediately stops the passenger conveyor. I try to make it. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-11-171457 (paragraphs 0012 to 0015, FIGS. 2 and 5)
[0004]
[Problems to be solved by the invention]
In the conventional conveyor entrance / exit safety device as described above, the passenger conveyor is stopped by detecting that a passenger's shoes, clothes, and the like have been caught, so that it is possible to detect that an abnormality has occurred, If the clothes or the like have been pulled into the interior, it may be difficult for the passenger to pull it out by himself. In this case, it is necessary to use a tool for removing the comb, and it is necessary to wait while being sandwiched until the rescuer arrives.
[0005]
Also, if the shoes, clothes, etc. sandwiched are forcibly pulled out, the comb may be damaged, and it is necessary to arrange a replacement for the comb for recovery and re-attach it. Will be shortened. In addition, there is a problem that the necessity of a new comb is not economical.
[0006]
The present invention has been made to solve the above problems, and provides a passenger conveyer entrance / exit safety device that can easily separate and remove a comb when shoes, clothes, etc. of passengers are caught. The purpose is to do.
[0007]
[Means for Solving the Problems]
An entrance / exit safety device for a passenger conveyor according to the present invention includes a detector provided at an end of a floor plate disposed at an entrance / exit and detecting that a comb plate on which a comb is mounted is displaced upward, An adsorbing element is provided on the comb plate, and an adsorbing element is provided on the comb plate. The control device constantly energizes the adsorbing element to adsorb the adsorbing element. This is to release the attraction force to the adsorber.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
1 and 2 are views showing one embodiment of the first and second inventions of the present invention. FIG. 1 is a side view of an entrance of a passenger conveyor, and FIG. 2 is an enlarged view of a part II in FIG. The same reference numerals in the drawings indicate the same parts. (The same applies to the following embodiments.)
[0009]
In the figure, a passenger conveyor has a large number of steps 3 connected endlessly moving between skirt cards 2 forming the lower portions of left and right balustrades 1. A moving handrail 4 is arranged on the outer periphery of the balustrade 1 and moves in synchronization with the movement of the steps 3 to move the passengers on the steps 3 from the lower floor to the upper floor, or from the upper floor to the lower floor, or horizontally. Transport. A floor plate 5 is laid at the entrance, and a comb plate 6 is pivotally mounted (not shown) at the tip of the floor plate 5, and the comb plate 6 is generally disposed at an angle.
[0010]
A comb 7 is arranged at the tip of the comb plate 6, the rear end of the comb 7 abuts on the comb plate 6, the front end extends to the step 3, and a groove formed on the upper surface of the step 3 along the traveling direction thereof. 3a is engaged with a slight gap. An adsorbed element 8a made of a magnetic material is provided on the comb 7 side of the abutting portion of the comb 7 and the comb plate 6, and an adsorbing element 8b formed of an electromagnet or the like is provided on the comb plate 6 side. This constitutes the suction device 8. The suction element 8b is connected to the control device 18 via the electric wire 9.
[0011]
On both sides of the comb plate 6, screw rods 10 through which the comb plate 6 is passed are provided, and the lower ends of the screw bars 10 are fastened to the truss 11 side. A detection lever 12 penetrated by the screw bar 10 is arranged on the upper surface of the comb plate 6, and is fixed to the comb plate 6 by two screw bars 13. An auxiliary spring 14 made of a compression coil spring is fitted on the screw rod 10, and an adjusting plate 15 for compressing the auxiliary spring 14 is fastened to the upper part of the screw rods 10 and 13 by the screw rod 13. A detector 16 composed of a switch for detecting the upward movement of the detection lever 12 is installed above the end of the detection lever 12, and is connected to a control device 18 via an electric wire 17.
[0012]
Next, the operation of this embodiment will be described.
In normal times, the adsorbing element 8b of the comb plate 6 attracts the adsorbed element 8a of the comb 7 by energization, so that the comb 7 is fixed to the comb plate 6, and the tip of the comb 7 keeps a clearance with the groove 3a of the step 3. Are engaged. Further, the auxiliary spring 14 is adjusted by the adjusting plate 15 so as to be rotationally displaced upward with a prescribed load at the portion of the comb 7 and constantly presses the comb plate 6 downward. Then, the passenger conveyor is operated in the above state.
[0013]
During operation of the passenger conveyor, if clothing such as a passenger's shoes or a long skirt is erroneously caught between the steps 3 and the comb 7, the comb plate 6 is displaced upward. When the detection lever 12 activates the detector 16, an abnormal signal is transmitted to the control device 18, and the passenger conveyor immediately stops. After stopping the passenger conveyor, the control device 18 deactivates the suction element 8b, so that the suction force on the to-be-adsorbed element 8a is released, and the comb plate 6 and the comb 7 can be separated.
[0014]
In this way, when the passenger's shoes, clothes, etc. are caught, it can be reliably detected, and after stopping the passenger conveyor, the passenger can use a special tool by himself or asking for assistance from attendants, etc. , The comb 7 and the comb plate 6 can be easily separated and separated. Further, there is no need to disassemble the comb 7 from the comb plate 6 or cut the comb 7 to rescue the victim, and it is easy to return the passenger conveyor to a normal state. The replacement comb 7 is not required, and the economy is improved.
[0015]
Also, even after the passenger has separated and escaped by separating the comb 7 and the comb plate 6 after stopping the passenger conveyor, the comb 7 does not automatically return to its original position. Even so, it is possible to specify that the stoppage of the passenger conveyor is caused by the operation of the entrance / exit safety device.
[0016]
In the above-described embodiment, the description has been given of the case where the attracted element 8a is a magnetic body and the attracting element 8b is an electromagnet. However, the attracted element 8a may be a suction plate, and the attracting element 8b may be applied as a vacuum pump.
[0017]
Embodiment 2 FIG.
FIG. 3 is an exploded perspective view of a comb plate and a comb portion showing one embodiment of the third invention of the present invention. 1 and 2 are also used in the second embodiment.
In this embodiment, a pin which protrudes downward as a convex portion 21A is provided on a contact surface of the comb 7 with the comb plate 6, and a concave portion into which the convex portion 21A is inserted A hole is provided as 21B.
In addition, you may provide the convex part 21A in the comb board 6 and the recessed part 21B in the comb board 7 contrary to FIG.
In this manner, the positioning accuracy when the comb plate 6 and the comb 7 are integrated is improved, and the holding force by the suction device 8 is exhibited to a high degree.
[0018]
Embodiment 3 FIG.
FIG. 4 is an exploded perspective view of a comb plate and a comb portion showing another embodiment of the third invention of the present invention. 1 and 2 are also used in the third embodiment.
In this embodiment, instead of the protrusion 21A of FIG. 3, a rectangular ridge that extends in the lateral direction and protrudes downward is provided as the protrusion 22A, and the protrusion 22A is inserted instead of the recess 21B. A rectangular groove is provided as a concave portion 22B. Note that the attracted element 8a (not shown) is provided on the lower surface of the convex portion 22A.
4, the convex portions 22 </ b> A may be provided on the comb plate 6 and the concave portions 22 </ b> B may be provided on the comb 7.
Thus, effects similar to those of the second embodiment can be obtained.
[0019]
Embodiment 4 FIG.
5 and 6 are views showing an embodiment of the fourth invention of the present invention. FIG. 5 is an exploded perspective view of a comb plate and a comb portion, and FIG. 6 is a side sectional view showing a holding state of the comb plate and the comb. 1 and 2 are also used in the fourth embodiment.
In this embodiment, a protrusion 23A protruding downward and a protrusion 23B protruding in the direction of the comb plate 6 are formed on the lower surface of the contact of the comb 7 with the comb plate 6 so that the comb plate 6 makes contact with the comb 7. A hole 24A that engages with the projection 23A is formed on the upper surface, and a hole 24B that engages with the projection 23B is formed on the end surface. The holding mechanism 25 is formed by the projections 23A and 23B and the holes 24A and 24B. .
[0020]
In this manner, the comb plate 6 and the comb 7 are suction-held by the suction device 8, and the suction state is strengthened by the holding mechanism 25.
The adsorbing element 8b exerts an adsorbing force when energized and loses the adsorbing force when deactivated, so that when the power to the passenger conveyor is shut off, the comb plate 6 and the comb 7 are separated irrespective of the passenger being caught. There is a risk of shifting or shifting.
[0021]
In that case, every time the passenger conveyor is started, it is necessary to confirm or adjust the engagement between the comb 7 and the comb plate 6 in the upper floor landing and the lower floor landing, and time is spent until the start of operation. However, in this embodiment, since the holding mechanism 25 is provided, the comb 7 and the comb plate 6 are not separated suddenly.
[0022]
【The invention's effect】
As described above, according to the present invention, the detector provided at the end of the floor plate disposed at the entrance / exit and detecting that the comb plate on which the comb is mounted is displaced upward is installed, and An adsorbing element is provided on the comb plate, and the adsorbing element is adsorbed by the controller by constantly energizing the adsorbing element. When the detector detects the displacement of the comb plate, the adsorbing element is deenergized and the adsorbed element is removed. The suction force is released. As a result, when a passenger's shoes, clothes, etc. are pinched, this can be reliably detected, and after stopping the passenger conveyor, the passenger must use a special tool, seeking assistance by himself or a staff member etc. In addition, the comb plate can be easily separated and separated.
[Brief description of the drawings]
FIG. 1 is a side view of an entrance of a passenger conveyor showing a first embodiment of the present invention.
FIG. 2 is an enlarged view of a portion II in FIG.
FIG. 3 is an exploded perspective view of a comb plate and a comb portion according to the second embodiment of the present invention.
FIG. 4 is an exploded perspective view of a comb plate and a comb portion according to a third embodiment of the present invention.
FIG. 5 is an exploded perspective view of a comb plate and a comb portion according to the second embodiment of the present invention.
FIG. 6 is a side sectional view showing a state in which the comb plate and the comb shown in FIG. 5 are held;
[Explanation of symbols]
3 steps, 5 floor plate, 6 comb plate, 7 comb, 8 suction device, 8a suction device, 8b suction device, 12 detection lever, 16 detector, 18 control device, 21A convex portion, 21B concave portion, 22A convex portion, 22B Recess, 23A, 23B protrusion, 24A, 24B hole, 25 holding mechanism.

Claims (4)

A comb plate provided at an end of a floor plate arranged at an entrance to a step, a comb attached to a tip end of the comb plate and extending to the step, and detecting that the comb plate is displaced upward. A detector, a suction element provided on the comb side of the comb, a suction element provided at a tip end of the comb plate, and for sucking the suction element when urged, and the suction element constantly. And a controller for deenergizing the adsorbing element when the detector detects displacement of the comb plate by the detector. 2. The entrance / exit safety device for a passenger conveyor according to claim 1, wherein an electromagnet is used as the attraction element, and a magnetic body is used as the attraction element. 3. The passenger conveyer entrance / exit safety device according to claim 1, wherein a convex portion is provided on one of the contact surfaces of the comb plate, and a concave portion for inserting the convex portion is provided on the other. The passenger conveyor safety device according to any one of claims 1 to 3, wherein the comb and comb plates are provided with a holding mechanism which is engaged with each other to hold the state and is separable by an external force. .

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