JP2013047140A - Safety device for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relatively simply improve safety for an passenger conveyor at a low cost.SOLUTION: A safety device 10 is provided in a triangle intersection part DS formed between a parapet 6 and an upper building floor UF. A cylindrical displacement part 12 which is provided in front of a protection board 11 is formed so that an end 121 of the displacement part 12 extends toward an outside deck. The lower end 121 of the displacement part is inserted into a detection device 13. When a specific force in a traveling direction is applied to the displacement part 12, a sensor 132 outputs a detection signal. When a force other than the specific force is applied to the displacement part, the sensor does not output the detection signal.

Description

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

  In an escalator as an example of a passenger conveyor, a triangular intersection is formed between an upper floor and a railing. A triangular intersection is also formed between two intersecting escalators. When a passenger is leaning outside from the moving handrail, there is a risk of being caught by a triangular intersection, so a protective plate for protecting the passenger is provided at the triangular intersection. And when a passenger contacts a protection board, an alarm is output and a passenger is alerted or an escalator is stopped (patent documents 1 and 2).

JP-A-6-156963 JP 63-208492 A

  In the prior art, since the light of the photoelectric sensor is passed through the elastically deformable cylindrical member or a plurality of photoelectric sensors are provided, the structure becomes complicated and the cost increases.

  The present invention has been made paying attention to the above-described problems, and an object thereof is to provide a safety device for a passenger conveyor that can enhance safety with a simpler configuration. Another object of the present invention is to increase the safety by outputting a detection signal only when a predetermined force is applied to the protective plate, and not to output a detection signal when a force other than the predetermined force is applied. An object of the present invention is to provide a passenger conveyor safety device that can prevent erroneous detection.

  In order to solve the above problems, a passenger conveyor safety device according to the present invention is a passenger conveyor safety device for moving passengers between an upper building floor and a lower building floor, A frame provided between the upper building floor and the lower building floor, a step formed in an endless manner, and provided in the frame so as to circulate between the building floors, and a drive for driving the steps A device, a balustrade erected along the direction of travel of the step, and a moving handrail provided on the balustrade so as to move in synchronization with the step, and intersect or cross between the upper building floor and the balustrade A protective plate is provided at the triangular intersection formed between the frame of the other passenger conveyor and the balustrade. When a predetermined force in the direction of travel of the step is applied to the protective plate, the detection signal Other than the specified force on the protective plate It does not output the detection signal when the other force is applied, and a detection device.

The protective plate may be fixedly attached so as to close the intersection.
The detection device is provided with a displacement part integrally provided on the protective plate so as to be directed to the lower side of the balustrade, and is provided on the lower side of the balustrade and is detected by detecting the displacement of the displacement part. And a sensor unit that outputs a signal.
The detection device further includes a travel direction stopper portion for restricting displacement of the displacement portion in the travel direction of the step, and an orthogonal direction stopper for restraining displacement in a direction orthogonal to the travel direction of the step on the same plane. May be provided.

FIG. 1 is a side view of the escalator according to the first embodiment. FIG. 2 is an enlarged side view showing the safety device. 3 is a view as seen from the direction of arrows III-III in FIG. 4 is a cross-sectional view seen from the direction of arrows IV-IV in FIG. FIG. 5 is a flowchart showing the emergency stop process. FIG. 6 is a side view of the escalator according to the second embodiment. FIG. 7 is a side view of the safety device according to the third embodiment. FIG. 8 is a side view of the safety device according to the fourth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as will be described later, the safety device is configured so as to detect when a force is applied in a direction in which the safety of the passenger is lowered, and not to detect otherwise.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of the escalator 1. FIG. 2 is a side view of the safety device 10. FIG. 3 is a front view of the safety device 10. FIG. 4 is a plan view of the detection unit. FIG. 5 is a flowchart showing the emergency stop process.

  The escalator 1 is provided to carry passengers between the lower floor building LF and the upper floor building floor UF. The escalator 1 shown in FIG. 1 is an ascending escalator. As for the frame 2 of the escalator 1, the both ends of the longitudinal direction are installed in each building floor LF and UF. On both ends of the frame 2 are formed entrances 3 and 4 for passengers to enter and exit, respectively.

  A step 5 connected endlessly is provided in the frame 2 between the lower floor building LF and the upper floor building floor. The step 5 is circulated and moved between the lower floor building LF and the upper floor building UF by a driving device 8 such as an electric motor.

  A balustrade 6 is provided vertically along the traveling direction of the steps 5. The balustrade 6 is provided with a handrail 7 that moves at the same speed in the same direction as the traveling direction of the step 5. As shown in FIG. 3, the lower inner side of the balustrade 6 is covered with an inner deck 30, and the lower outer side of the balustrade 6 is covered with an outer deck 31.

  A substantially triangular intersection DS is formed between the upper floor building floor UF and the balustrade 6. A trapezoidal or substantially triangular protective plate 11 is fixed below the upper building floor UF so as to block the triangular intersection DS. The protective plate 11 can be comprised from synthetic resin materials, such as an acrylic resin, for example.

  On the front side of the protection plate 11, a long rod-shaped displacement portion 12 is integrally provided. The front side means the front side in the traveling direction of the step 5. The displacement part 12 is formed in a cylindrical shape from, for example, an acrylic resin material. A detection device 13 is provided below the displacement portion 12. The safety device 10 includes a displacement unit 12 and a detection device 13.

  The detection device 13 is electrically connected to the control unit 9. The control unit 9 controls the drive device 8 based on the detection signal from the detection device 13. Furthermore, the control unit 9 can also output a signal for giving a warning to passengers or the like. The control unit 9 can be configured as a microcomputer system including a microprocessor, a memory, an input / output interface circuit, and the like, for example. Alternatively, the control unit 9 can be configured as a relay circuit, or a sequencer may be used as the control unit 9.

  As shown in FIG. 2, the upper end side of the protection plate 11 is fixed to the lower surface side of the upper floor building floor UF via the mounting bracket 14.

  As shown in FIG. 3, the detection device 13 is attached to the outer deck 31. Although FIG. 3 shows a case where the detection device 13 is provided on the upper surface of the outer deck 31, the detection device 13 may be provided inside the outer deck 31 instead. In that case, a hole for inserting the lower end side of the displacement portion 12 may be provided on the upper surface of the outer deck 31.

  As shown in FIG. 4, the detection device 13 includes a device main body 131, a sensor unit 132 built in one end of the device main body 131, and a U-shaped notch formed on the other end of the device main body 131. 133. The apparatus main body 131 is provided with a traveling direction stopper portion 133A and orthogonal direction stopper portions 133B and 133C so as to take in the notch portion 133.

  The traveling direction stopper portion 133 </ b> A restricts the lower end 121 of the displacement portion 12 from moving in the traveling direction F of the step 5. The orthogonal direction stopper parts 133 </ b> B and 133 </ b> C regulate the displacement of the lower end 121 of the displacement part 12 in the directions L and R orthogonal to the traveling direction of the step 5 on the same plane.

  When the lower end 121 of the displacement part 12 is displaced in the advancing direction F by a predetermined amount dF, the lower end 121 presses the plunger 132A of the sensor part 132 and then comes into contact with the advancing direction stopper part 133A, and further displacement is restricted. When the lower end 121 of the displacement portion 12 is displaced by a predetermined amount dL in one of the orthogonal directions, the lower end 121 comes into contact with the one orthogonal direction stopper portion 133B, and further displacement is restricted. Similarly, when the lower end 121 of the displacement portion 12 is displaced by a predetermined amount dR in the other of the orthogonal directions, the lower end 121 contacts the other orthogonal direction stopper portion 133C, and further displacement is restricted.

  A lower end 121 of the displacement part 12 is a part of the displacement part 12, and the displacement part 12 is provided integrally with the protection plate 11. Therefore, restricting the displacement of the lower end 121 of the displacement portion 12 restricts the displacement of the displacement portion 12 and the protection plate 11.

  Of the inner wall of the apparatus main body 131 provided with the notch 133, the wall portion other than the traveling direction stopper portion 133A and each of the orthogonal direction stopper portions 133B and 133C is also for restricting the displacement of the lower end 121 of the displacement portion 12. Functions as a stopper. These wall portions restrict the lower end 121 of the displacement portion 12 from moving in a direction inclined from the traveling direction F of the step 5.

  The sensor unit 132 is configured as a sensor having a mechanical contact such as a small limit switch, for example. When the lower end 121 of the displacement part 12 is displaced in the traveling direction F, the plunger 132A that protrudes from the sensor part 132 comes into contact, and the plunger 132A moves the contact in the sensor part 132. When the contact is switched, the sensor unit 132 outputs a detection signal indicating that the displacement unit 12 is displaced by a predetermined amount dF or more in the traveling direction F to the control unit 9 as an electrical signal.

  In addition, you may comprise the sensor part 132 as various sensors, such as a reflection type photoelectric switch, a magnetic switch, an electrostatic capacitance sensor, and an ultrasonic sensor, for example. The materials and shapes of the displacement unit 12 and the apparatus main body 131 may be selected in accordance with the sensor operating principle.

  The emergency stop process will be described with reference to the flowchart of FIG. The emergency stop process is executed by the control unit 9.

  The control unit 9 determines whether a detection signal from the detection device 13 is input (S10). When a detection signal is input from the detection device 13 (S10: YES), the control unit 9 outputs a control signal to the drive device 8 to reduce the rotational speed (S11). Thereby, the speed of the step 5 decreases.

  Furthermore, the control unit 9 can also output a warning such as “Don't get out of the handrail because it is dangerous” almost simultaneously with the deceleration of the drive device 8 (S12). A warning message may be displayed on the display device, or a lamp or the like may be turned on instead of the voice warning or together with the voice warning.

  If the detection signal from the detection device 13 is still input even if the warning is issued, the control unit 9 can output the control signal to the drive device 8 and stop its rotation (S13). Thereby, the circular movement of the step 5 is stopped.

  Furthermore, the control unit 9 can output an alarm signal toward the management center or the guard station or the like (S14). Note that the output timing of the alarm signal may be before the movement of the step 5 is stopped.

  According to this embodiment configured as described above, the lower end 121 of the displacement portion 12 provided integrally with the protection plate 11 is extended to the vicinity of the outer deck 31, and the displacement of the lower end 121 is detected by the detection device 13. Therefore, for example, the configuration of the safety device 10 can be simplified as compared with a configuration in which the detection light of the photoelectric switch is passed through a cylindrical member having elasticity or a configuration in which a plurality of photoelectric switches are arranged. Therefore, in the present embodiment, the safety of the escalator 1 can be improved by the safety device 10 that is easy to mount and low in manufacturing cost.

  In this embodiment, the detection device 13 outputs a detection signal when a predetermined force in the traveling direction F of the step 5 is applied to the displacement portion 12 provided integrally with the fixed protective plate 11. Therefore, when a situation directly related to passenger safety occurs, the situation occurrence can be detected by the detection device 13. “Predetermined force” means a force when the lower end 121 of the displacement portion 12 is displaced and the displacement is detected by the detection device 13.

  When the displacement unit 12 is displaced in the directions L and R orthogonal to the traveling direction of the step 5, the detection device 13 does not output a detection signal. Therefore, for example, when the passenger leans slightly on the handrail 7 or when the passenger swings the protective plate 11 with his / her finger, the detection device 13 does not detect the situation. .

  Therefore, in this embodiment, it is possible to prevent the escalator 1 from being stopped in an emergency because the detection signal is output by an operation not directly related to passenger safety. Thereby, in a present Example, both safety | security and usability can be improved comparatively cheaply.

  In the present embodiment, the detection device 13 includes a traveling direction stopper portion 133A and two orthogonal direction stopper portions 133B and 133C. The orthogonal direction stopper portions 133B and 133C suppress the displacement portion 12 from being displaced beyond the predetermined amounts dL and dR in the orthogonal directions L and R. Therefore, it is possible to suppress the protection plate 11 from swinging in the orthogonal directions L and R, prevent damage to the protection plate 11 and the like, and improve safety.

  In the present embodiment, the detection device 13 incorporates a sensor portion 132 in the device main body 131, and further, stopper portions 133 </ b> A, 133 </ b> B, and 133 </ b> C are integrally provided on the inner wall portion of the notch portion 133 formed in the device main body 131. . Therefore, the safety device 10 of the present embodiment can reduce the number of parts, and can reduce the manufacturing cost and the assembly cost.

  In this embodiment, since the detection device 13 is provided in the vicinity of the frame 2, for example, the outer deck 31, the detection device 13 and the control unit 9 can be connected relatively easily. This is because electrical wiring can be passed through the frame 2.

  A second embodiment will be described with reference to FIG. Each of the following embodiments including this embodiment corresponds to a modification of the first embodiment. Therefore, the difference from the first embodiment will be mainly described. In the present embodiment, the safety device 10 (2) is also provided at the intersection formed between the two intersecting escalators 1 and 1A.

  As shown in the side view of FIG. 6, the escalator 1 in the ascending direction and the escalator 1A in the descending direction intersect each other. A safety device 10 (1) is provided at a triangular intersection DS1 formed between the building floor UF on the upper floor and the escalator 1 in the upward direction.

  Another safety device 10 (2) is also provided at a triangular intersection DS2 formed at a location where the ascending escalator 1 and the descending escalator 1A intersect. Since the configurations of the safety devices 10 (1) and 10 (2) are as described in the first embodiment, they are omitted.

  Movable protection plates 20 (1) and 20 (2) are attached to the front sides of the safety devices 10 (1) and 10 (2). Specifically, the movable protective plate 20 (1) is swingably attached to the lower surface side of the upper building floor UF on the front side in the traveling direction F of the safety device 10 (1). Another movable protective plate 20 (2) is swingably attached to the lower side of the escalator 1A in the descending direction on the front side in the traveling direction F of the other safety device 10 (2).

  Each of the movable protection plates 20 (1) and 20 (2) includes a protection plate 21 formed from an acrylic resin or the like into a substantially trapezoidal flat plate shape, and a cylindrical portion 22 integrally formed on the front side of the protection plate 21. The upper end of the protective plate 21 is composed of a ring-shaped mounting bracket 23 for swingably mounting. Configuring this embodiment like this also achieves the same effects as the first embodiment.

  A third embodiment will be described with reference to FIG. In the safety device 10A of the present embodiment, the lower end 121A of the displacement portion 12A is formed of a magnetic material such as iron, for example. The sensor unit 132 is configured as a magnetic sensor instead of a limit switch having a mechanical contact.

  Furthermore, in this embodiment, since the lower end 121A is formed from a magnetic material having a specific gravity greater than that of the resin, the diameter of the lower end 121A is made shorter than the displacement portion 12A. This reduces the weight of the lower end 121A. Configuring this embodiment like this also achieves the same effects as the first embodiment.

  A fourth embodiment will be described with reference to FIG. In the safety device 10B of the present embodiment, a part of the lower end side of the protection plate 11B is extended downward. Although the cylindrical member 12 is integrally provided on the front side of the protective plate 11B, the cylindrical member 12 is not a member for detecting the displacement of the protective plate 11B.

  The lower end 111 of the protection plate 11B extends downward and is inserted into the notch 133 of the detection device 13. The sensor unit 132 is configured, for example, as a capacitive sensor or a limit switch having a mechanical contact. The detection device 131 outputs a detection signal when the tip 111 of the protection plate 11B is displaced in the traveling direction F by a predetermined amount dF or more. Configuring this embodiment like this also achieves the same effects as the first embodiment.

  In addition, this invention is not limited to embodiment mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention. For example, the displacement portion 12 for detecting the displacement of the protection plate 11 is not limited to the front side of the protection plate 11, and can be provided on the rear side of the protection plate 11 or the central portion of the protection plate 11.

  DESCRIPTION OF SYMBOLS 1,1A: Escalator, 2: Frame, 3, 4: Entrance / exit, 5: Step, 6: Railing, 7: Moving handrail, 8: Driving device, 9: Control unit, 10, 10 (1), 10 (2 ), 10B: safety device, 11, 11B: protective plate, 12, 12A: displacement portion, 13: detection device, 131: device body, 132: sensor portion

Claims (7)

A passenger conveyor safety device for moving passengers between an upper building floor and a lower building floor,
The passenger conveyor is
A frame provided between the upper building floor and the lower building floor;
Steps provided in the frame so as to be endlessly connected and circulated between the building floors;
A driving device for driving the steps;
A balustrade erected along the direction of travel of the steps;
A moving handrail provided on the balustrade to move in synchronization with the steps;
With
A protective plate is provided between the upper building floor and the balustrade, or at a triangular intersection formed between the frame of the other passenger conveyor and the balustrade that intersects,
When a predetermined force in the direction of travel of the step is applied to the protection plate, a detection signal is output, and when a force other than the predetermined force is applied to the protection plate, a detection signal is not output. A passenger conveyor safety device comprising a detection device.   The safety device for a passenger conveyor according to claim 1, wherein the protection plate is fixedly attached so as to block the intersection. The detection device includes:
A displacement part provided integrally with the protective plate so as to face the lower side of the balustrade;
A sensor unit that is provided below the balustrade located below the displacement unit, detects a displacement of the displacement unit, and outputs the detection signal;
The safety device of the passenger conveyor of Claim 2 provided with these. The detection device further restricts displacement of the displacement portion in a direction perpendicular to the traveling direction of the step on the same plane as the traveling direction stopper portion for restricting displacement of the step in the traveling direction of the step. An orthogonal direction stopper portion,
The safety device for a passenger conveyor according to claim 3. The traveling direction stopper portion and the orthogonal direction stopper portion are integrally formed,
The advancing direction stopper portion is provided with the sensor portion,
The passenger conveyor safety device according to claim 4. In response to the detection signal from the detection device, a warning is output.
The safety device for a passenger conveyor according to any one of claims 1 to 5. The drive device is decelerated or stopped by the detection signal from the detection device.
The safety device for a passenger conveyor according to any one of claims 1 to 5.

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