JP2015151196A - passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor that can treat each kind of foreign matter when the foreign matter is likely to enter a gap between an opening portion of a skirt portion and a moving handrail passing on the opening portion.SOLUTION: A passenger conveyor is equipped with: an inlet member 33 that is provided at an opening portion for passing a moving handrail of a skirt portion 11 and displaced when force is applied in a direction to inside of the skirt portion 11; a safety switch 36 for detecting the displacement of the inlet member 33; and a proximity sensor 32 for detecting that a person approaches the inlet member 33. The conveyor, when the proximity sensor 32 detects that the person approaches the inlet member 33 and the safety switch 36 detects the displacement of the inlet member 33, quickly stops footsteps; and when the proximity sensor 32 does not detect that the person approaches the inlet member 33 and the safety switch 36 detects the displacement of the inlet member 33, stops the footsteps taking time.

Description

  Embodiments of the present invention relate to a passenger conveyor.

  Railings are erected on both sides of the passenger conveyor in the width direction. The lower part of the balustrade is covered with a skirt part. The moving handrail of the passenger conveyor circulates around the periphery of the balustrade, but enters the skirt portion at the lower portion of the balustrade and moves inside the skirt portion.

  By the way, there is a gap between the inner wall of the opening formed in the skirt portion so that the moving handrail enters and exits and the moving handrail passing through the opening. There is a risk that foreign matter may enter the gap by being dragged by the movement of the moving handrail. Therefore, in a general passenger conveyor, an inlet member is provided in an opening formed in the skirt portion (see, for example, Patent Document 1). When this inlet member is pushed by a foreign object such as a user's finger, this is detected, and the passenger conveyor stops suddenly. In this way, foreign matter is prevented from entering the gap.

JP 2008-156084 A

  However, when the passenger conveyor suddenly stops, the user riding on the passenger conveyor feels uncomfortable. Therefore, it is better not to stop suddenly when the need for sudden stop is low. And depending on the kind of foreign material, even if it enters into the clearance gap between the inner wall of an opening part, and a moving handrail, the necessity for a passenger conveyor to stop suddenly is low.

  Then, this invention makes it a subject to provide the passenger conveyor which can respond | correspond differently with the kind of foreign material, when a foreign material is going to enter into the said clearance gap.

  The passenger conveyor of the embodiment is provided inside the opening for passing the handrail of the skirt part, and is an inlet member that is displaced when a force is applied in the skirt part inside direction, and a safety switch that detects the displacement of the inlet member. A proximity sensor that detects that a person has approached the inlet member, and a control unit that controls movement of a moving handrail based on detection of the safety switch and the proximity sensor, wherein the control unit includes the proximity sensor When the safety switch detects a displacement of the inlet member in a state in which it is detected that a person has approached the inlet member, the first control for stopping the moving handrail is performed, and the proximity sensor is the inlet member If the safety switch detects a displacement of the inlet member without detecting that a person has approached Performs second control for stopping, stopped by the second control is characterized by being carried out over more time than stopping by the first control.

Sectional drawing of the escalator 1 which concerns on embodiment. The A arrow directional view of FIG. Sectional drawing of the opening part 3 of the skirt part 11. FIG.

  Examples of passenger conveyors include escalators and moving walkways. In the following embodiments, an escalator will be described as an example.

(1) Structure of Escalator 1 FIG. 1 is a cross-sectional view of an escalator 1 according to this embodiment. Trusses 20 are installed on the upper and lower floors of the building. Step drive sprockets 21 and 22 are arranged inside the upper floor machine room 25 and the lower floor machine room 26 of the truss 20, respectively. An endless step drive chain 23 is wound around the step drive sprockets 21 and 22. The step drive sprocket 21 is connected to a drive device 24 having a motor and a speed reducer, and rotates by the drive of the drive device 24. This rotation drives the step drive chain 23 and the other step drive sprocket 22. The steps 2 are connected to the step drive chain 23 at equal intervals with no gaps. When the step drive chain 23 is driven, the step 2 connected thereto circulates between the upper floor side and the lower floor side along a guide rail (not shown). A control unit 27 that controls the operation of the escalator is provided inside the machine room 25.

  On the both sides of the escalator 1 in the width direction, balustrades 10 are erected from the upper floor to the lower floor. A moving handrail drive sprocket 12 is provided inside the truss 20. An endless moving handrail driving chain 13 is wound around the step driving sprocket 21 and the moving handrail driving sprocket 12. Further, a moving handrail 14 is hung on the peripheral portion of the balustrade 10 and the moving handrail driving sprocket 12. When the step drive sprocket 21 rotates, the movable handrail drive chain 13 and the movable handrail drive sprocket 12 are driven, and the movable handrail 14 circulates between the upper floor side and the lower floor side along the periphery of the balustrade 10. To do. The lower part of the balustrade 10 is covered with a skirt portion 11 provided from the upper floor to the lower floor. Openings 3 are respectively formed on the upper floor side and the lower floor side of the skirt portion 11. The moving handrail 14 passes through the inside of the opening 3 and enters the inside of the skirt portion 11 or goes out of the skirt portion 11.

(2) Structure of Foreign Object Detection Device 30 Foreign material detection devices 30 shown in FIGS. 2 and 3 are provided on both sides of the skirt portion 11 in the moving direction of the handrail 14, that is, on the upper floor side and the lower floor side. Yes.

  The foreign object detection device 30 includes a press detection device 31 and a proximity sensor 32.

  The structure of the press detection device 31 is as follows.

  The opening 3 includes an opening end 3a that appears outside the skirt portion 11, and an inner wall 3b that continues from the opening end 3a toward the inside of the skirt portion 11 by a certain distance.

  An inlet member 33 is provided inside the opening 3 of the skirt portion 11. The inlet member 33 has a shape that fills the space between the inner wall 3 b of the opening 3 and the moving handrail 14 that passes through the inside of the opening 3. Specifically, the cross-sectional shape of the inlet member 33 viewed from the moving direction of the moving handrail 14 is a C-shape opened upward so as to cover the moving handrail 14 from below. The inlet member 33 extends in the moving direction of the moving handrail 14. A slight gap exists between the moving handrail 14 and the inlet member 33. Therefore, the moving handrail 14 can move inside the inlet member 33. A slight gap also exists between the inner wall 3 b of the opening 3 and the inlet member 33. Therefore, the inlet member 33 can be displaced with respect to the inner wall 3b. An outer end portion of the skirt portion 11 of the inlet member 33 protrudes outward of the skirt portion 11 from the opening end 3 a of the opening portion 3. On the other hand, the inner end of the skirt portion 11 of the inlet member 33 is located inside the skirt portion 11.

  A plate-like elastic body fixing member 34 is fixed inside the skirt portion 11. The elastic body fixing member 34 and the inner end of the skirt portion 11 of the inlet member 33 are connected by a spring 35. Instead of the spring 35, other elastic bodies such as rubber may be used. Inside the skirt portion 11, a safety switch 36 is provided in the vicinity of the inner end of the skirt portion 11 of the inlet member 33.

  In the pressure detection device 31 having the above structure, when the inlet member 33 is pushed inward of the skirt portion 11, the inlet member 33 is displaced inward of the skirt portion 11 against the elasticity of the spring 35. Then, the safety switch 36 detects the inlet member 33 and sends a signal to the control unit 27.

  The specific structure of the safety switch 36 is not limited. For example, a push button switch, a limit switch, a slide switch, or the like that detects displacement by being directly pressed by the inlet member 33 is used. In addition, a distance sensor that optically measures the distance from the inlet member 33, a potentiometer, various displacement detectors, and the like may be used.

  The proximity sensor 32 is a sensor that detects that a part of a human body has approached. In the present embodiment, a capacitance sensor is used as the proximity sensor 32. The place where the proximity sensor 32 is provided is not limited, and may be a place where it is possible to detect that a part of a human body has approached the opening 3. In the present embodiment, the proximity sensor 32 is fixed to the outer end of the skirt portion 11 of the inlet member 33. The wiring of the capacitance sensor passes through the inside of the inlet member 33 and is connected to the control unit 27. When a part of a human body having high conductivity approaches the opening 3, the capacitance sensor detects this and sends a signal to the control unit 27. On the other hand, even if an object such as an umbrella having low conductivity approaches the opening 3, the capacitance sensor does not detect that.

  Regardless of the moving direction of the moving handrail 14, it is desirable that both the upper floor side and lower floor foreign object detection devices 30 are operable.

(3) Operation of Foreign Object Detection Device 30 In the escalator 1 having the above structure, when a part of a human body, for example, a finger approaches the inlet member 33, the proximity sensor 32 detects that fact. Thereafter, while a part of the human body approaches the inlet member 33 further, the proximity sensor 32 continues to detect this. In this state, when a part of the human body pushes the inlet member 33 and the inlet member 33 is displaced inward of the skirt portion 11, the safety switch 36 detects this. As described above, when the safety switch 36 detects that the inlet member 33 has been pressed while the proximity sensor 32 continues to detect a part of the human body, the control unit 27 performs the first control. Judgment is made and control is performed. The first control is control for stopping the movement of the step 2 and the moving handrail 14.

  Further, when an object other than a part of the human body, for example, an umbrella approaches the inlet member 33, the proximity sensor 32 does not detect that. In that state, when the object pushes the inlet member 33, the inlet member 33 is displaced inward of the skirt portion 11. When the inlet member 33 is displaced, the safety switch 36 detects this. Thus, when the safety switch 36 detects that the inlet member 33 has been pressed in a state where the proximity sensor 32 has not detected a part of the human body, the control unit 27 should perform the second control. It judges that and performs the control. The second control is control that stops the step 2 and the moving handrail 14 over a longer time than in the case of the first control. Here, taking time means taking time from when the step 2 and the handrail 14 start to decelerate until they completely stop. For example, the control unit 27 gradually decreases the speed of movement of the step 2 and the moving handrail 14 and completely stops the step 2 and the moving handrail 14 after a predetermined time has elapsed.

  Further, an alarm may be issued when a part of a human body approaches the opening 3 and has not yet pushed the inlet member 33. For example, when the proximity sensor 32 detects that a part of a human body has approached the inlet member 33 and the safety switch 36 has not detected that the inlet member 33 has been pressed at that time, an alarm is issued. May be. Further, when the proximity sensor 32 continues to detect that a part of the human body has approached the inlet member 33 for a certain period of time, and the safety switch 36 does not detect that the inlet member 33 has been pressed within the certain period of time, An alarm may be issued. The alarm may be an audible alarm such as a buzzer or announcement, or a visual alarm such as a patrol light.

(4) Effects According to the escalator 1 configured as described above, when a part of a human body, for example, a finger approaches the opening 3 and presses the inlet member 33, the step 2 and the moving handrail 14 stop. . Therefore, there is no possibility that a part of the human body is caught in the opening 3.

  On the other hand, when an object other than a part of the human body, such as an umbrella, approaches the opening 3 and presses the inlet member 33, the step 2 and the moving handrail 14 stop over time. Therefore, there is no possibility that the step 2 suddenly stops and the user on the step 2 feels uncomfortable. However, since the step 2 and the moving handrail 14 are finally stopped, there is no possibility that an object approaching the opening 3 will be caught deep inside the skirt 11.

  Thus, the escalator 1 can take different measures depending on the type of foreign matter when the foreign matter is about to enter the skirt portion 11 from the opening 3.

  Also, if a part of a person's body approaches the opening 3 and has not yet pushed the inlet member 33, if an alarm is issued, the person approaches the opening 3 before pressing the inlet member 33. Can be prevented.

  Among human bodies and things that humans wear or carry while walking, human bodies are considered to be one of high conductivity. Therefore, by using a capacitance sensor as the proximity sensor 32, it is possible to reliably detect that a part of the human body has approached.

  In the present embodiment, since the proximity sensor 32 is fixed to the outer end of the skirt portion 11 of the inlet member 33, the proximity of the human body approaching the gap between the inner wall 3b of the opening 3 and the moving handrail 14 is reached. A part can be reliably detected.

(5) Example of change The escalator 1 may be capable of changing the moving direction of the step 2 and the moving handrail 14. In that case, with the change of the moving direction of the moving handrail 14, the foreign object detecting device 30 in the opening 3 on the side where the moving handrail 14 enters the skirt portion 11 becomes detectable, and the moving handrail 14 becomes the skirt portion. 11 may be controlled so that the foreign matter detection device 30 in the opening 3 on the side exiting from 11 does not detect. Since it is difficult for foreign matter to enter the opening 3 on the side where the moving handrail 14 exits the skirt portion 11, it is considered that there is no problem even if the foreign matter detection device 30 on this side does not detect it. Is obtained.

  Further, the escalator 1 may be one in which the moving direction of the step 2 and the handrail 14 is fixed and cannot be changed. In that case, the foreign object detection device 30 may be provided only in the opening 3 where the moving handrail 14 enters the skirt portion 11.

  The type of the proximity sensor 32 is not limited to a capacitance sensor. Any sensor may be used as long as it does not detect that an object such as an umbrella is approaching but detects that a part of a human body is approaching. Another example of such a sensor is an infrared sensor. This is because an infrared sensor can detect a part of a human body having a high temperature and can prevent an object such as an umbrella having a low temperature from being detected.

  When the proximity sensor 32 detects a part of the human body, and then the safety switch 36 detects that the inlet member 33 has been pressed, between the initial detection by the proximity sensor 32 and the detection by the safety switch 36, Regardless of whether or not the detection state by the proximity sensor 32 is maintained, the first control may be performed. However, it is desirable that the first control is performed only when the time from the initial detection by the proximity sensor 32 to the detection by the safety switch 36 is within a certain time.

  The above embodiment is an illustration and the scope of the invention is not limited to this. The above embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. The above embodiments and modifications thereof are included in the inventions described in the claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 ... Escalator, 10 ... Railing, 11 ... Skirt part, 12 ... Moving handrail drive sprocket, 13 ... Moving handrail drive chain, 14 ... Moving handrail, 2 ... Step, 20 ... Truss, 21 ... Step drive sprocket, 22 DESCRIPTION OF SYMBOLS ... Step drive sprocket, 23 ... Step drive chain, 24 ... Drive device, 25 ... Machine room, 26 ... Machine room, 27 ... Control part, 3 ... Opening part, 3a ... Open end, 3b ... Inner wall, 30 ... Foreign material detection apparatus , 31 ... Press detection device, 32 ... Proximity sensor, 33 ... Inlet member, 34 ... Elastic body fixing member, 35 ... Spring, 36 ... Safety switch

Claims (5)

An inlet member provided inside the opening for passing the handrail of the skirt part, and displaced when a force is applied in the skirt part internal direction;
A safety switch for detecting the displacement of the inlet member;
A proximity sensor that detects that a person has approached the inlet member;
A control unit for controlling movement of a moving handrail based on detection of the safety switch and the proximity sensor;
The control unit performs a first control to stop the moving handrail when the proximity sensor detects that a person has approached the inlet member and then the safety switch detects a displacement of the inlet member. ,
When the safety sensor detects a displacement of the inlet member in a state where the proximity sensor has not detected that a person has approached the inlet member, the second control is performed to stop the moving handrail,
The passenger conveyor which stops by said 2nd control taking time rather than the stop by said 1st control.   The passenger conveyor of claim 1, wherein the proximity sensor is a capacitance sensor.   The passenger conveyor according to claim 2, wherein the capacitance sensor is provided at a front end of the inlet member in a direction outside the skirt portion. A passenger conveyor that can change the direction of movement of the handrail,
The inlet member, the safety switch, and the proximity sensor are respectively provided on both sides of the moving direction of the moving handrail of the skirt portion,
With the change of the moving direction of the moving handrail, the safety switch and the proximity sensor on the side where the moving handrail enters the skirt portion become detectable, and the safety switch on the side where the moving handrail exits the skirt portion and the The passenger conveyor of any one of Claims 1-3 which will be in the state which a proximity sensor does not detect.   5. The control unit according to claim 1, wherein the proximity sensor detects that a person has approached the inlet member, and issues a warning if the safety switch does not detect displacement of the inlet member. Section passenger conveyor.

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