JP6643920B2 - Safety device and escalator for moving handrail storage - Google Patents

Description

  The present invention relates to a safety device and an escalator for a moving handrail storage unit.

  The escalator is provided with a moving handrail that travels in the same direction and at the same speed as the steps as the steps move. In a down escalator, the moving handrail usually emerges from the balustrade base cover of the upper entrance / exit and is stored in the balustrade base cover of the lower entrance / exit. In an up escalator, the opposite is true: the moving handrail emerges from the balustrade base cover at the lower entrance and is stored in the balustrade base cover at the upper entrance.

  Patent Literature 1 envisions a case where a user's clothes or belongings are likely to be accidentally pulled in between the opening of the cover and the moving handrail in a portion where the moving handrail is stored in the above-described cover. A safety device is disclosed.

  This safety device includes a lever and a cylindrical roller. The cylindrical roller is supported by the tip of the lever and is in contact with the moving handrail. When something enters between the roller and the moving handrail, the inclination of the lever changes as the roller moves away from the moving handrail. Therefore, by monitoring this change in inclination, it is detected that something has entered between the roller and the moving handrail.

JP 2012-162354 A

  However, in the configuration disclosed in Patent Document 1, when the rotation center axis of the roller is slightly displaced with respect to the moving handrail, generation of abnormal noise may occur.

  The present invention has been made in view of the above, and it is possible to cope with a case where an object enters between an opening of a cover and a moving handrail while suppressing generation of abnormal noise, The purpose is to provide a safety device.

In order to achieve the above-described object, a safety device for a moving handrail storage unit according to the present invention includes a cover that stores a moving handrail, and a cover that is disposed inside the cover. and a plurality of switches for detecting that enters, said plurality of switches, a plurality of rows along the width of the handrail, are arranged, and, a plurality of rows in the traveling direction of the moving handrail is disposed, Each of the plurality of switches includes a contact having a rollable sphere that comes into contact with the moving handrail, and a sensor unit that detects a movement of the contact in a contact / separation direction with respect to the moving handrail.

  According to the present invention, it is possible to cope with a case where an object enters between the opening of the cover and the moving handrail while suppressing generation of abnormal noise.

FIG. 2 is a diagram illustrating a side surface of the escalator according to the first embodiment of the present invention. It is a figure which expands and shows the moving handrail accommodating part of the escalator of FIG. FIG. 3 is a view showing a moving handrail storage unit of the escalator in FIG. 1 from a direction of an arrow III in FIG. 1. FIG. 3 is a diagram illustrating a configuration of a switch.

  Hereinafter, embodiments of a safety device and an escalator for a moving handrail storage unit of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. Further, in the present specification, the description will be made with the height direction of the escalator being the Y direction, the direction of the horizontal component of the traveling direction of the escalator being the X direction, and the width direction of the escalator being the Z direction.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating a side surface of the escalator according to the first embodiment of the present invention. Although not intended to limit the present invention in particular, in the following description, a down escalator will be described as an example so that the operation direction of each part is indicated by an arrow A.

  The escalator 1 is provided with a truss 3 extending vertically and obliquely, and the truss 3 is provided with a plurality of steps 5 which are connected endlessly and circulate. Each step 5 reciprocates obliquely between an upper entrance 7 as an upper area (upper floor) and a lower entrance 9 as a lower area (lower floor). The plurality of steps 5 carry the user to be transported in a step-like manner on the outward path 11, and travel in the truss 3 on the return path 13 in the opposite direction to the outward path 11.

  A balustrade 15 extending along the longitudinal direction of the truss 3 is provided on both left and right sides of the step 5 on the outward path 11 side. Each of the pair of left and right balustrades 15 includes a side plate 17 and a moving handrail 19. The moving handrail 19 is an endless belt-shaped member, and moves around the side plate 17 in synchronization with the circumferential movement of the steps 5.

  Further, a safety device for the movable handrail storage unit according to the first embodiment will be described with reference to FIGS. FIG. 2 is an enlarged view showing a moving handrail storage section of the escalator of FIG. FIG. 3 is a diagram showing the moving handrail storage unit of the escalator in FIG. 1 from the direction of arrow III in FIG. FIG. 4 is a diagram illustrating the configuration of the switch. The safety device 21 of the moving handrail storage unit includes a cover 23 for housing the moving handrail 19, and a plurality of switches 25 arranged inside the cover 23. A specific example of the cover 23 is a skirt guard.

  The plurality of switches 25 are arranged in a plurality of rows along the width of the moving handrail 19, and are arranged in a plurality of columns in the traveling direction of the moving handrail 19. That is, as shown in FIG. 3, the plurality of switches 25 are arranged in a C-shape along the width of the C-shaped moving handrail 19 in the C-shaped moving handrail 19. In this description, the number arranged in a C-shape on one YZ plane is defined as the number of rows. Further, in the present invention, the number of groups of the plurality of moving handrails 19 on the YZ plane including the plurality of rows of moving handrails 19 arranged in the traveling direction of the moving handrail 19, that is, the X direction is defined as the number of columns. Therefore, the plurality of switches 25 are arranged in a plurality of rows and a plurality of columns.

  Further, the individual switches 25 will be described. Each of the switches 25 includes a contact 27 and a sensor unit 29 as shown in FIG. The contact 27 includes a rollable sphere 31 that comes into contact with the moving handrail 19 and a body 33 that rotatably supports the sphere 31. The plurality of switches 25 are arranged side by side so that the sphere 31 of the contact 27 contacts the moving handrail 19. The sensor unit 29 detects the movement of the contact 27 in the contact / separation direction with respect to the moving handrail 19. Note that the switch 25 may be provided with a spring 35 that constantly biases the sphere 31 toward the moving handrail 19.

  The switch 25 is connected to the control unit 37. Further, the control unit 37 is connected to a driving device 39 provided in the truss 3 for moving the steps 5 and the moving handrail 19 around. The control unit 37 stops the driving device 39 and stops the movement of the plurality of steps when any one of the sensor units 29 of the plurality of switches 25 detects that the contact 33 is separated from the moving handrail 19. The control unit 37 may be provided in a form in which functions are added to an existing control unit that controls the driving device 39, or may be separately provided for exclusive use.

  According to the first embodiment configured as described above, when the user's clothing or belongings are likely to be drawn in along the moving handrail in the moving handrail storage unit, the intervening object is moved to the moving handrail. The state in which the ball of the contact moves away from the moving handrail is detected at the corresponding switch. Thereby, the drive of the escalator 1 is stopped. During operation, the contact is always in contact with the moving handrail. For this reason, it is avoided that a wide gap is formed between the moving handrail and its surrounding portion, thereby suppressing the inclusion itself from entering between the moving handrail and the switch in the first place. Further, as described above, during operation, the contact is always in contact with the moving handrail. In the first embodiment, the contact with the moving handrail is caused by rolling without a specific rotation axis. A possible sphere. For this reason, even if the noise caused by the contact resistance with the moving handrail, or the habit of the moving handrail due to long-term use, or the poor contact state due to the poor orientation of the rotating shaft, the present embodiment can be used. In the first embodiment, the switch smoothly follows the movement of the moving handrail, and generation of abnormal noise is suppressed. That is, while suppressing the entry of the inclusion by the contact between the moving handrail and the switch, the generation of the abnormal noise is also suppressed.

Embodiment 2 FIG.
Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment, except for the contents described below.

  In the second embodiment, the control unit has a delay timer function. That is, the control unit stops the movement of the plurality of steps when any of the sensor units of the plurality of switches continuously detects the state in which the contact is separated from the moving handrail for a predetermined time. .

  According to the second embodiment, the same advantages as those of the first embodiment are obtained, and it is possible to cope with a case where an object enters between the opening of the cover and the moving handrail while suppressing generation of abnormal noise. Can be. In addition, in the second embodiment, since the control unit is provided with the delay timer function, there is an advantage that it is possible to avoid a malfunction as a safety device due to dust attached to the surface of the moving handrail.

Embodiment 3 FIG.
Further, a third embodiment of the present invention will be described. The third embodiment is the same as the first embodiment except for the contents described below.

  In the third embodiment, the switch is formed as a contact-type displacement sensor. That is, the sensor unit detects at least two types of states, a first state in which the contact is separated from the moving handrail by a first distance and a second state in which the contact is separated by a second distance from the moving handrail. Can be. The second distance is larger than the first distance. That is, each switch of the third embodiment can detect at least two states, that is, a state of being operated shallowly and a state of being deeply operated. Then, the control unit of the third embodiment, when the sensor unit of one switch has detected the second state, or when the plurality of sensor units of a plurality of switches have simultaneously detected the first state, Stop the movement of multiple steps.

  According to the third embodiment, the same advantages as those of the first embodiment are obtained, and it is possible to cope with a case where an object enters between the opening of the cover and the moving handrail while suppressing generation of abnormal noise. Can be. Further, in the third embodiment, when one switch is operated deeply or when there are a plurality of switches operated shallowly, the escalator is urgently stopped, and conversely, when only one switch is operated shallowly Therefore, there is a high possibility of operation due to dust attached to the surface of the moving handrail, and an emergency stop is refrained. As described above, there is an advantage that a malfunction as a safety device due to dust attached to the surface of the moving handrail can be avoided.

  As described above, the content of the present invention has been specifically described with reference to the preferred embodiments. However, based on the basic technical idea and teaching of the present invention, those skilled in the art can adopt various modifications. It is obvious.

  In the above-described embodiment, the mode in which the safety device of the movable handrail storage unit is provided at the lower entrance of the down escalator has been described, but the present invention is not limited to this. In a down escalator, the moving handrail usually emerges from the balustrade base cover of the upper entrance / exit and is stored in the balustrade base cover of the lower entrance / exit. In an up escalator, the opposite is true: the moving handrail emerges from the balustrade base cover at the lower entrance and is stored in the balustrade base cover at the upper entrance. Therefore, the present invention can be implemented as an effective safety device provided at the upper entrance of the up escalator, when the moving handrail is stored in the cover of the balustrade base of the upper entrance.

  1 escalator, 5 steps, 19 moving handrail, 21 moving handrail storage unit safety device, 23 cover, 25 switch, 27 contactor, 29 sensor unit, 31 sphere, 33 body, 35 spring, 37 control unit, 39 driving machine.

Claims (4)

A cover for storing the moving handrail,
A plurality of switches that are arranged inside the cover and that detect that a foreign object has entered between the opening of the cover and the moving handrail ,
Wherein the plurality of switches, a plurality of rows along the width of the handrail, are arranged, and, a plurality of rows in the traveling direction of the moving handrail is disposed,
The plurality of switches each include a contact having a rollable sphere abutting on the moving handrail, and a sensor unit for detecting movement of the contact in the contact / separation direction with respect to the moving handrail,
Safety device for moving handrail storage. A plurality of steps to be moved along the circuit,
A moving handrail that is moved on a circulating route synchronously with the plurality of steps;
A safety device for a moving handrail storage unit according to claim 1,
An escalator with
When the sensor unit of any of the plurality of switches detects a state in which the contact is separated from the moving handrail, the control unit stops moving the plurality of steps.
Escalator. The control unit, when the sensor unit of any of the plurality of switches continues to detect a state in which the contact is separated from the moving handrail for a predetermined time, continuously, the plurality of steps of the plurality of steps Stop moving,
The escalator of claim 2. A plurality of steps to be moved along the circuit,
A moving handrail that is moved on a circulating route synchronously with the plurality of steps;
A safety device for a moving handrail storage unit according to claim 1,
An escalator with
The sensor unit includes:
A first state in which the contact is separated from the moving handrail by a first distance,
A second state in which the contact is separated from the moving handrail by a second distance,
Can detect at least two types of conditions,
The second distance is greater than the first distance,
When the sensor section of one switch detects the second state, or when the sensor sections of the plurality of switches simultaneously detect the first state, the plurality of steps move. With a control unit,
Escalator.

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