JP2009091051A - Safety device of escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device of an escalator capable of precisely predicting and preventing in advance accidents wherein an article held by a passenger is nipped in a gap between a step face and a riser face of an adjacent step. <P>SOLUTION: This device comprises step detection means 5 installed inside a skirt guard 14 and detecting passage of a specific portion of a step side face, a pair of article detection means 6 having a light projection part and a light reception part for detecting an article 11 located at a risky position adjacent to a riser face 2 of an adjacent step 3b in connection with the step detection means 5, safety riding report means 7 reporting a passenger holding the article 11, and a safety device control part 4 for making the safety riding report means 7 report the riding at a safety position away from the riser face 2 of the step 3b adjacent to the passenger when the step detection means 5 detects passage of a specific portion of the step 3 and the article detection means 6 detects the article 11 at the risky position of the adjacent step 3b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a safety device for an escalator, and more particularly, to a safety device for an escalator that prevents an accident in which a passenger riding on the escalator is caught in a gap between a step surface and a riser surface of an adjacent step.

  There has been an accident in which an escalator passenger has an object he / she holds, such as sandals or boots, in the gap between the step surface and the riser surface of the adjacent step. In this accident, when an escalator passenger rubs his / her sandals or boots against a step creatrizer, the passenger gets caught in the gap between the step surface and the riser surface of the adjacent step, and the sandwiched sandals cannot be removed. Is. The passenger hits a comb installed at the entrance and gets injured unexpectedly. About 20 accidents on this escalator occur annually, which is becoming a social problem.

  FIG. 8 is a perspective view showing escalator steps. The escalator 20 travels in the direction of the arrow in the figure. In step 3a where the passenger of the escalator 20 gets on, a yellow safety line 8 is provided to alert the passenger to an accident in which an object 11 such as sandals or boots held by the passenger is caught. The safety line 8 includes a line indicating the dangerous position 9 on the skirt guard side that calls attention to an accident caught in the gap between the step 3 and the skirt guard 14, and the riser surface 2 of the step 3b adjacent to the step 3a. It is composed of a line indicating an adjacent step-side dangerous position 10 that calls attention to an accident that is caught in a gap. The present invention is intended for an accident in which an escalator passenger gets into the adjacent step side dangerous position 10 and is caught in a gap of about 5 mm between the step 3a and the riser surface 2 of the adjacent step 3b.

  Conventionally, various measures are taken against an accident in which a passenger of the escalator 20 gets into the adjacent step side dangerous position 10 and is caught in a gap between the step 3a and the riser surface 2 of the adjacent step 3b. For example, for passengers on the escalator 20, announcements such as “Please grab the handrail and ride inside the yellow line of the step” are repeatedly flown at the entrance of the escalator 20, so that passengers can ride safely. Urging.

  Further, as shown in FIG. 8, the escalator 20 is provided with a step abnormal traveling detection switch (CRS) 30 for detecting an abnormal lifting of the escalator 20 in step 3 b inside the step 3. That is, when the passenger of the escalator 20 gets into the adjacent step side dangerous position 10 and is sandwiched between the riser surface 2 of the adjacent step 3b, the step 3b is reduced when the step between the step 3a and the step 3b is contracted at the end portion during the ascending travel. Lift up. The abnormal step detection switch 30 operates by detecting the raised step 3b, and the escalator 20 stops suddenly.

  On the other hand, Patent Document 1 discloses a safety device for a man conveyor. Here, the load detection means provided at the edge of the step of the man conveyor detects the passenger's entry into the step edge, and the notification means informs the passenger based on the operation signal output from the detection result. Call attention to it. Further, Patent Document 2 discloses a man conveyor stepping danger position boarding prevention device. Here, a caution belt is marked on the three side edges excluding the riser side of the step surface, and the passenger's feet on the caution belt are automatically used in the man conveyor that clearly shows the outer peripheral danger area of the tread surface to the passenger. This is detected automatically, and a warning is given to the passenger using a broadcast device.

JP-A-5-338980 Japanese Utility Model Publication No. 58-56763

  Announcements to alert escalator passengers at the entrance are chronic, so the passengers' response is slow and does not prevent accidents.

  Further, the step abnormal running detection switch (CRS) operates by detecting that an object carried by the passenger is caught, and does not prevent the object itself from being caught. Also, if the abnormal step detection switch is activated, the escalator stops suddenly and further deterioration of the accident can be prevented. However, there is a possibility that the passenger and other passengers on the escalator may fall over due to the sudden stop, which is a preferable accident prevention measure. That's not true.

  An object of the present application is to provide a safety device for an escalator that solves such a problem and accurately predicts and prevents an accident in which an object carried by a passenger is caught in a gap between a step surface and an adjacent step riser surface. It is.

  To achieve the above object, a safety device for an escalator according to the present invention is provided inside a skirt guard of an escalator, step detection means for detecting passage of a specific portion on a step side surface of the escalator, and skirts on both sides of the escalator A pair of object detection means each comprising a light projecting part and a light receiving part provided in the guard and detecting an object at a dangerous position close to the riser surface of an adjacent step on the step surface in conjunction with the step detection means; The safety boarding reporting means for reporting to the passenger of the escalator carrying the object, the step detecting means detects the passage of a specific part of the step side surface, and the object detecting means is on the riser surface of the adjacent step on the step surface. When an object at a nearby dangerous position is detected, the passenger is notified to the safety boarding means. A safety device control unit to Problem ride safety position spaced apart from the riser face of the step adjacent to each other in the step surface, in that it comprises the features.

  In addition, the safety device of the escalator has a dangerous position in which the safety device controller detects that the step detection unit has passed a specific part of the step side surface and the object detection unit is close to the riser surface of the adjacent step on the step surface. When an object located at is detected, it is preferable to decelerate the escalator to a predetermined speed.

  Moreover, it is preferable that the safety device of an escalator detects a step front-end | tip part by the side of a passenger among step side surfaces through which a step detection means passes.

  Moreover, it is preferable that the safety device of an escalator is a pair of transmissive | pervious photoelectric sensor which consists of a light projection part and a light-receiving part in which an object detection means can detect the object in the dangerous position on a step surface.

  Moreover, it is preferable that the safety device of an escalator is a reflective proximity sensor in which a step detection means can detect passage of the specific location of a step side surface.

  Further, the safety device control unit of the escalator, when the safety device control unit detects an object on the step surface and detects a part of the step that the object detection unit passes, It is preferable that the passenger is notified of the boarding at the safe position on the step surface.

  In addition, the safety device of the escalator is provided with an announcement to a passenger who has an object in a dangerous position near the riser surface of the adjacent step on the step surface, and a safety boarding notification means is provided in the skirt guard. A speaker is preferable.

  In addition, the safety device of the escalator is a super directional speaker in which the safety boarding reporting means reports by announcement to passengers who hold objects in a dangerous position close to the riser surface of the adjacent step on the step surface. Is preferred.

  Further, the safety device of the escalator is a spotlight in which the safety boarding reporting means turns on and reports the step surface on which the passenger who owns the object in the dangerous position near the riser surface of the adjacent step on the step surface gets on. Preferably there is.

  Further, the safety device of the escalator is lit for passengers who have safety boarding notification means installed in the vicinity of the handrail of the escalator and possess an object at a dangerous position close to the riser surface of the adjacent step on the step surface. It is preferable that the patrol light is reported.

  With the above configuration, the safety device of the escalator has the riser surface of the step adjacent to the safety device control unit on the step surface detected by the step detection unit and the step detection unit coupled with the step detection unit. The possibility of the occurrence of an accident is determined based on the establishment of an AND condition with the detection of an object in a dangerous position close to. Thereby, it is possible to accurately predict an accident in which an object carried by the passenger is caught in a gap between the step surface and the riser surface of the adjacent step.

  In addition, the safety device control unit is a safe position separated from the riser surface of the step adjacent to the passenger on the safety boarding notification means on the step surface by the detection by the step detection means and the detection of the object by the object detection means. Report on boarding at. Thus, an accident can be prevented beforehand by reporting a dangerous situation directly to the passenger carrying the object.

  As described above, according to the safety device for an escalator according to the present invention, it is possible to accurately predict and prevent an accident in which an object carried by a passenger is caught in a gap between a step surface and a riser surface of an adjacent step. It becomes possible.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of an escalator safety device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a schematic configuration of one embodiment of a safety device for an escalator as seen from a top view of the escalator and is a partial plan view. The escalator safety device 1 is housed in a safety control box 13 provided inside the skirt guard 14 of the escalator 20. The escalator safety device 1 includes a safety device control unit 4, a step detection sensor 5 as a step detection means, an object detection sensor 6 as an object detection means, and a notification speaker 7 as a safe boarding notification means. Here, the safety device control unit 4 provided in the safety control box 13 is shown in a block diagram. Further, on the surface of step 3 of the escalator 20, a generally yellow safety line 8 is provided to display the adjacent step side dangerous position 10 for the passenger.

  Moreover, in FIG. 2, the schematic structure of one embodiment of the safety device of an escalator is shown with the cross section of an escalator. Step 3 of the escalator 20 is raised or lowered on the step rail 15 by the step front wheel 16 and the step rear wheel 17 in the space between the skirt guards 14. In FIG. 2, the escalator 20 is shown ascending as indicated by the arrows in the figure. The upper surface of step 3 is supported by a triangular step frame 12 that connects the step front wheel 16 and the step rear wheel 17. The escalator safety device 1 is housed in a safety control box 13 indicated by a broken line in FIG. 2, and includes a safety device control unit 4 (not shown), a step detection sensor 5, an object detection sensor 6, and a notification speaker 7. Is done.

  In FIG. 3, the installation position of the safety device 1 of an escalator is shown. FIG. 3A shows a plan view of a general escalator 20, and FIG. 3B shows a side surface of the general escalator 20. The arrow in FIG. 3 shows the moving direction of the escalator 20, and this escalator 20 is an escalator 20 dedicated to ascending. Then, the passenger gets on the escalator 20 from the entrance 25 and gets off from the exit 26. In the present embodiment, the safety device 1 for the escalator is attached to both sides of the upper portion of the rising escalator 20 and at a position of about 2 m from the exit 26 of the escalator 20. This position is the position immediately before step 3 that rises obliquely moves in the horizontal direction. This is because, for example, in the case of the escalator 20 at the time of ascent, if step 3 moves in the horizontal direction, the step between step 3a and step 3b shrinks and an accident is likely to occur. However, the installation position of the escalator safety device 1 is not limited to this position, and may be another position of the escalator 20. The escalator safety device 1 may be installed at a plurality of positions along the escalator 20. Further, when the escalator 20 is used in combination with ascending and descending, the escalator safety device 1 can be installed at least in two places (upper and lower escalator safety devices 1 ′).

  The step detection sensor 5 shown in FIGS. 1 and 2 is a reflective proximity sensor that can detect the passage of a specific portion on the side surface of the step 3 that passes. In the present embodiment, the step detection sensor 5 is attached to a position where the passenger side step tip 18 can be detected. This reflective proximity sensor detects the presence / absence of the step tip 18 that is approximately 0 mm to 10 mm.

  The object detection sensor 6 shown in FIGS. 1 and 2 includes a pair of transmission units including a light projecting unit and a light receiving unit that can detect an object 11 such as a sandal or a shoe in the adjacent step side dangerous position 10 on the surface of Step 3. Type photoelectric sensor. The object detection sensor 6 detects the presence or absence of the object 11 when light is blocked by the object 11.

  The safety device controller 4 detects that the step detection sensor 5 has passed the step tip 18 and the object detection sensor 6 is a sandal or a shoe in the adjacent step side dangerous position 10 on the surface of the step 3. When the object 11 is detected, the notification speaker 7 is notified to the passenger of the boarding at the safe position separated from the riser surface 2 on the surface of step 3.

  FIG. 4 shows an enlarged cross section of the escalator safety device 1. The object detection sensor 6 detects the object 11 on the line (n, n ′) along the moving direction of step 3 in FIG. However, on the line (n, n ′), in addition to the object 11 to be detected, for example, the upper surface of the step 3, the riser surface 27, the step frame 12 and the like pass and block the light. On the other hand, the step detection sensor 5 detects the object 11 on the line (m, m ′) along the moving direction of step 3 in FIG. The object 11 related to the escalator 20 other than the step tip 18 does not pass within the range of about 0 mm to 30 mm from the step detection sensor 5 on the line (m, m ′). Therefore, the step detection sensor 5 can reliably grasp the position of step 3 of the escalator 20 that moves sequentially. Moreover, even if the moving speed of the escalator 20 changes, the step detection sensor 5 can catch the movement of step 3 following it.

  Therefore, the detection of the object 11 by the object detection sensor 6 is ensured by interlocking with the detection of the step tip 18 by the step detection sensor 5. That is, at the moment when the step detection sensor 5 detects the step tip portion 18, the object detection sensor 6 is separated by L1 in the moving direction of step 3 as shown in FIG. This distance (L1) does not change if the speed of the escalator 20 is constant because the step detection sensor 5 and the object detection sensor 6 are fixed inside the skirt guard 14. Further, as shown in FIG. 4, the object detection sensor 6 can detect an object 11 such as a sandal or a shoe over an interval L2 in the moving direction of Step 3. If this range is exceeded, the surface of step 3 or the riser surface 27 will be detected. Based on the positional relationship between the step detection sensor 5 and the object detection sensor 6, the detection of the step tip 18 by the step detection sensor 5 and the detection of the object 11 of the object detection sensor 6 are linked, and the detection timing of the object 11 of the object detection sensor 6 is detected. By adjusting, reliable detection becomes possible.

  However, there are cases where the step detection means 5 detects the object 11 carried by the passenger on the surface of Step 3 and the part of Step 3 through which the object detection unit 6 passes is detected. For example, the passenger is detected by the step detection means 5 when standing in the skirt guard side dangerous position 9 adjacent to the skirt guard surface 2 on the surface of step 3b, and further, the object detection unit 6 passes at the timing described above. This is a case where a part of step 3 is detected. In this case, the safety device control unit 4 causes the safe boarding reporting means 7 to report the boarding at the safe position on the surface of step 3b to the passenger. That is, the safety device control unit 4 of the present embodiment may detect not only the adjacent step side dangerous position 10 but also the skirt guard side dangerous position 9 with respect to the object 11.

  The notification speaker 7 notifies the passenger of the escalator 20 who carries the object 11 such as sandals or shoes. Since the notification speaker 7 is housed in a safety control box 13 provided inside the skirt guard 14 of the escalator 20, sandals, shoes, etc. possessed by the speaker 7 are located at the adjacent step side dangerous position 10 on the surface of step 3. You can report and warn a passenger directly. Further, when the passenger is a child or an infant, a warning can be given to a companion such as a parent who is on the escalator 20.

  FIG. 5 shows a circuit configuration in one embodiment of the escalator safety device 1. First, when the escalator 20 is in the upward operation, the escalator UP relay 21 is turned on. When the escalator 20 is in the downward operation, the escalator DOWN relay 22 is turned on. When the detection by the step detection sensor 5 and the detection by the object detection sensor 6 are turned on under the AND condition, the detection relay (A) 23 picks up. Then, the notification speaker 7 is activated by the contact (A) 24 and a notification to the passenger is issued. The notification speaker 7 may be a buzzer.

  FIG. 6 shows an embodiment of another safe boarding notification means in the safety device of the escalator. FIG. 7 shows a circuit configuration including an example of another safe boarding notification means in the safety device of the escalator. Here, safe boarding notification means such as superdirective speaker announcement device 31, spotlight 32, and patrol light 33 are shown.

  When the super-directional speaker announcement device 31 provided on the ceiling portion of the escalator 20 is connected and the contact is turned on, a recorded caution message such as “Please get in the center of the step” stands at the position of the safety device of the escalator. It flows to the passenger 28 for a certain time. Therefore, the passenger 28 recognizes that the report is for himself / herself.

  When the spotlight 32 provided on the ceiling portion of the escalator 20 is connected and the contact is turned on, the spotlight 32 is turned on for a certain time toward the passenger 28 standing near the position of the safety device of the escalator. Therefore, the passenger 28 recognizes that the report from the report speaker 7 is addressed to him / her.

  When the patrol light 33 provided in the vicinity of the handrail of the escalator 20 is connected and the contact is turned on, the patrol light 33 is turned on toward the passenger 28 standing in the vicinity of the position of the safety device 1 of the escalator. Therefore, the passenger 28 recognizes that the report from the report speaker 7 is addressed to him / her.

  When the escalator 20 is controlled by an inverter and is variable speed, as shown in FIG. 7, when the escalator deceleration command 34 is connected and the contact is turned ON, 20 is decelerated for a certain period of time and becomes a low speed. By decelerating the escalator 20 in this manner, the passenger 28 can treat the dangerous state with a margin.

It is a top view including the partial block diagram which shows schematic structure of one Embodiment of the safety device of the escalator which concerns on this invention. It is sectional drawing of the escalator which shows schematic structure of one Embodiment of the safety device of an escalator. It is the top view and side view which show the installation position of the safety device of an escalator. It is an expanded sectional view of the safety device of an escalator. It is a block diagram which shows the circuit structure in one Example of the safety device of an escalator. It is explanatory drawing which shows the Example of the other safe boarding notification means in the safety device of an escalator. It is a block diagram which shows the circuit structure containing the Example of the other safe boarding notification means in the safety device of an escalator. It is a perspective view which shows the step (step) of an escalator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Escalator safety device, 2 Riser surface, 3a, 3b Step (step), 4 Safety device control part, 5 Step detection sensor (step detection means), 6 Object detection sensor (object detection means), 7 Notification speaker (Safe riding) Notification means), 8 safety line, 9 dangerous position on the skirt guard side, 10 dangerous position on the adjacent step side, 11 objects, 12 step frame, 13 safety control box, 14 skirt guard, 15 step rail, 16 step front wheel, after 17 step Wheel, 18 step tip, 19 Escalator deceleration command, 20 Escalator, 21 Escalator UP relay, 22 Escalator DOWN relay, 23 Detection relay, 24 Detection relay contact, 25 Escalator entrance, 26 Escalator exit, 27 Riser surface, 8 passengers, 30 footstep abnormality travel detection switch (CRS), 31 super-directional speaker announcement equipment, 32 Spotlight, 33 Patlite, 34 escalator deceleration instruction.

Claims (10)

Step detection means provided inside the skirt guard of the escalator, for detecting the passage of a specific portion of the step side surface of the escalator;
A pair of a light projecting portion and a light receiving portion provided inside the skirt guards on both sides of the escalator and detecting an object at a dangerous position close to the riser surface of the adjacent step on the step surface in conjunction with the step detection means. Object detection means,
A safe boarding reporting means for reporting to escalator passengers carrying the object;
When the step detection means detects the passage of a specific part of the step side surface and the object detection means detects an object at a dangerous position close to the riser surface of the adjacent step on the step surface, a safe boarding notification means A safety device control unit that informs the passenger of boarding at a safe position separated from the riser surface of the adjacent step on the step surface,
An escalator safety device comprising:   2. The safety device for an escalator according to claim 1, wherein the safety device control unit detects the passage of a specific part of the step side surface of the step detection unit and the step riser adjacent to the object detection unit on the step surface. An escalator safety device, comprising: decelerating an escalator to a predetermined speed when an object in a dangerous position close to a surface is detected.   3. The escalator safety device according to claim 1, wherein the step detection means detects a step front end portion on a passenger side of a step side surface that passes through the escalator safety device. 4.   The safety device for an escalator according to any one of claims 1 to 3, wherein the object detection means includes a pair of a light projecting unit and a light receiving unit that can detect an object at a dangerous position on the step surface. An escalator safety device characterized by being a transmissive photoelectric sensor.   The escalator safety device according to any one of claims 1 to 4, wherein the step detection means is a reflective proximity sensor capable of detecting passage of a specific portion of the step side surface. Safety device.   The safety device for an escalator according to any one of claims 1 to 5, wherein the safety device control unit is a step in which the step detection unit detects an object on the step surface and the object detection unit passes. An escalator safety device characterized by causing the safe boarding reporting means to report to the passenger about the boarding at a safe position on the step surface when the vehicle is detected.   The safety device for an escalator according to any one of claims 1 to 6, wherein the safety boarding notification means is provided in the skirt guard and is in a dangerous position adjacent to a riser surface of an adjacent step on the step surface. A safety device for an escalator, which is a speaker for making an announcement to a passenger carrying an object.   The safety device for an escalator according to any one of claims 1 to 7, wherein the safety boarding notification means is for a passenger who has an object at a dangerous position close to a riser surface of an adjacent step on the step surface. An escalator safety device characterized by being a super-directional speaker that reports by announcement.   The safety device for an escalator according to any one of claims 1 to 8, wherein the safety boarding notification means is used by a passenger who owns an object at a dangerous position close to a riser surface of an adjacent step on the step surface. An escalator safety device characterized by being a spotlight that lights up and reports a step surface.   The safety device for an escalator according to any one of claims 1 to 9, wherein the safety boarding notification means is installed in the vicinity of the handrail of the escalator and is close to the riser surface of the adjacent step on the step surface. An escalator safety device, characterized by being a patrol light that lights up and reports to passengers carrying an object in the area.

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