JP2011116535A - Safety device for escalator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device for an escalator capable of more effectively preventing a collision of a user with a delta guard provided in a delta part, restricting excessive operation stop of the escalator. <P>SOLUTION: This safety device 12 includes: an optical sensor 36; an ultrasonic sensor 38; an alarm section control means; and an operation stop control means. The optical sensor 36 detects the lean-out continuous time T when a user 32 leans out of a moving handrail 24. The ultrasonic sensor 38 detects a guard arrival distance L between the user 32 leaning out of the moving handrail 24 and the delta guard. The alarm section control means generates an alarm with a swing light 42 when one or both of the optical sensor 36 and the ultrasonic sensor 38 detect the user 32 leaning out of the handrail. The operation stop control means, in the case wherein a threshold value is A and a condition that T×(1/L)>A is satisfied, stops operation of the escalator 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a safety device for an escalator for preventing a user from colliding with a delta guard provided in a delta portion formed between an upper floor of a building in which the escalator is accommodated and a moving handrail of the escalator. .

  Conventionally, in a building where an escalator is accommodated, as a safety device, in order to prevent a user from being caught in the delta formed between the ceiling of the upper floor and the moving handrail of the escalator, A delta guard, such as a triangular protective plate, is provided on the surface. For example, if a user such as a child rides on an escalator and tries to pass through the delta section while riding a part of the body such as an arm or neck from the moving handrail, there is no possibility of causing an accident. I can't say that. For this reason, a delta guard is provided in the delta portion.

  For example, the delta guard is suspended or fixed from the ceiling. It is also considered that another delta guard such as a hanging plate is provided on the rear side in the traveling direction of the escalator next to the delta guard from the viewpoint of ensuring safety more effectively.

  Such a delta guard can alert escalator users and prevent accidents in the delta. However, it is desirable to prevent contact with the delta guard because the user touches the delta guard because it causes discomfort to the user.

  On the other hand, Patent Document 1 discloses a detection unit that detects the user's body getting out of the moving handrail, and a warning unit that warns the user of a collision with the delta guard by the output of the detection unit. An escalator is provided. The sound wave sensor as the detection means and the blower as the warning means are disposed in the delta guard. When the escalator rises with the user leaning outside the handrail and approaches the delta guard, the sonic sensor detects the proximity of the user, the blower is turned on, and the wind is provided on the end face of the delta guard It is blown out from the outlet.

  Patent Document 2 discloses a safety device for an escalator, in which a light projecting unit that emits an optical axis in the vertical direction of a delta unit, and an optical axis from the light projecting unit are reflected to form a plurality of optical axes. An optical sensor that includes a reflector and a light receiving unit disposed between the light projecting unit with a plurality of optical axes sandwiched between the reflecting plate and the light projecting unit, and that operates when at least one optical axis is shielded, and operation of the optical sensor There is described a safety device having a notifying means for notifying passengers of danger at times and a stopping means for stopping the running of the escalator when the operation of the optical sensor continues for a predetermined time.

  Further, in Patent Document 3, an alarm is sounded when a photoelectric device in which a light emitting device and a light receiving device are opposed to each other on both sides of an escalator and a shield is present between the light emitting device and the light receiving device of the photoelectric device. An escalator safety device is described that includes an emergency stop means for stopping the escalator.

  Further, Patent Document 4 discloses an escalator safety device including an alarm generation unit that emits an alarm sound modulated using ultrasonic waves as a carrier wave in a prohibition zone around a balustrade where entry of passenger conveyor users is prohibited. Are listed. Further, a directional speaker including an ultrasonic radiation unit and a reflected wave detection unit that detects a reflected wave of the ultrasonic wave, and whether a user has entered the prohibited zone based on a signal from the reflected wave detection unit. It is described that a determination unit for determining is provided. In addition, it is determined whether or not the detection of the reflected wave is continued for a predetermined time. If the detection is not continued, the normal operation is continued. If the detection is continued, the circulation movement of the passenger conveyor is stopped. Has been.

JP-A-6-278882 JP 2000-169071 A JP 2000-219474 A JP 2006-321577 A

  In the case of the escalator described in Patent Document 1, when the user gets out of the escalator, it is detected and the wind blown from the outlet of the delta guard is applied to the user to avoid collision with the delta guard. There is a possibility. However, if the escalator rises ignoring that the user is hitting the wind or not knowing it, it cannot be said that there is no possibility of hitting the delta guard.

  On the other hand, in the case of the safety device for an escalator described in Patent Document 2, the optical sensor operates when the user goes over the moving handrail and blocks at least one optical axis, and notifies the passenger by the notification means. The danger is notified, and the escalator is stopped by the stopping means when the operation of the optical sensor continues for a predetermined time. For this reason, when a delta guard is provided in the delta section, even if the user blocks the optical axis immediately before the delta guard, the escalator stops running before the optical sensor continues to operate for a predetermined time. However, there is room for improvement in terms of ensuring safety more effectively.

  In addition, in the case of the configurations described in Patent Document 3 and Patent Document 4, it is considered that a user who has started from a moving handrail collides with the delta guard when the delta guard is provided in the delta portion. Not.

  It is also possible to stop the operation of the escalator whenever the sensor detects that the user has moved out of the handrail, only considering avoiding the user colliding with the delta guard. However, in this case, the escalator may be excessively stopped, which may cause discomfort to other users. For example, if the user is far enough from the Delta Guard and accidentally steps out of the body from the handrail, the user may immediately notice it and withdraw, so that the escalator is always stopped. There may be cases where sufficient safety can be ensured without this.

  An object of the present invention is to more effectively prevent a user from colliding with a delta guard provided in a delta portion while suppressing excessive operation stop of the escalator in an escalator safety device.

  The safety device for an escalator according to the present invention prevents a user from colliding with a delta guard provided in a delta portion formed between an upper floor of a building in which the escalator is accommodated and a moving handrail of the escalator. Escalator safety device that detects when the user has started to move out of the handrail from the handrail, and when the user has stepped out of the handrail. A warning is issued by the warning unit when a user's entry from a moving handrail is detected by a distance detection sensor that detects a guard arrival distance that is a distance from the delta guard and at least one of an entry time sensor and a distance detection sensor. The warning unit control means to be generated, the start-up duration is T, the guard reach distance is L, and the threshold is A When the a safety device of the escalator, characterized in that it comprises a driving stop control means for stopping the operation of the escalator when T × (1 / L)> A is satisfied.

  In the safety device for an escalator according to the present invention, preferably, the start-up time sensor is an optical sensor having a light-emitting device and a light-receiving device, and the start-up time is determined according to a blocking time of an optical axis emitted from the light-emitting device toward the light-receiving device. Is detected.

  In the safety device for an escalator according to the present invention, preferably, the distance detection sensor irradiates the distance measuring medium to the user who has gone outside from the moving handrail, and detects the distance measurement medium reflected by the user. Detect the distance from Delta Guard to the user.

  In the safety device for an escalator according to the present invention, preferably, the warning part is a swing light that is provided on a ceiling part of a lower floor that is a lower part of the upper floor and is capable of switching the direction of the lighting part, The warning unit control means directs the lighting part of the swing light to the user who has started out from the moving handrail when detecting the outward start from the moving handrail of the user by the start time sensor or the distance detection sensor. A warning is generated by switching the direction of the lighting section.

  In the safety device for an escalator according to the present invention, preferably, the warning unit control means causes the first light emitting means to emit a swinging light at a normal time when the user does not detect an entry from the moving handrail, and the user's moving handrail. Light emission control means for causing the head light to emit light by the second light emitting means having a light emission color different from that of the first light emitting means in the event of an abnormality in which the boarding is detected.

  In the safety device for an escalator according to the present invention, preferably, the warning unit control means causes the head swing light to emit light in a low-luminance color at a normal time when the user has not detected an entry from the moving handrail, and from the user's moving handrail. And a second light emission control means for causing the head swing light to emit light in white having a high luminous intensity when an abnormality is detected.

  The safety device for an escalator according to the present invention is preferably provided with landing arrival detection means for detecting the arrival of the user at the escalator landing, and the light emission control means or the second light emission control means is preset in normal times. The swing light is turned off until the arrival of the user at the escalator landing is detected after the predetermined condition is satisfied, and the swing light is emitted when the arrival of the user at the escalator landing is detected in normal times. Let

  According to the safety device for an escalator according to the present invention, when a user steps out of the body from a moving handrail, the start-up is detected by at least one of the start-up time sensor and the distance detection sensor, and the warning unit generates a warning. Can alert the user. In addition, when the start-up continuation time T becomes excessively long by the operation stop control means, or when the guard reach distance L is excessively short, the operation of the escalator is based on the relationship between the start-up continuous time T and the guard reach distance L. Therefore, it is possible to more effectively prevent the user from colliding with the delta guard provided in the delta portion while suppressing the excessive operation stop of the escalator.

1 is a schematic diagram showing an escalator safety device according to an embodiment of the present invention. In the escalator which comprises the safety device of Drawing 1, it is a schematic diagram showing the state where one user got out of the body from the handrail. It is a block diagram which shows the structure of the safety device of FIG. FIG. 2 is a schematic diagram of a swing light that constitutes the safety device of FIG. 1. FIG.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. 1 to 4 show an example of an embodiment of the present invention. As shown in FIG. 1, the escalator safety device of the present embodiment includes an escalator 10 and a safety device 12. The escalator 10 is accommodated in the building 13 and is provided so as to connect the upper floor 14 and the lower floor 16 in the building 13. Moreover, the escalator 10 is for raising, and circulates a plurality of steps 18 (see FIG. 2 and omitted in FIG. 1) in the direction indicated by the arrow in FIG.

  The escalator 10 is connected to a plurality of step shafts (not shown) supported by a plurality of steps 18 by an endless chain (not shown), and circulates the steps 18 by driving the chain by an escalator driving device 20 including a motor. . Moreover, while providing the support wall part 22 in the left-right direction (front and back direction of FIG. 1, the left-right direction of FIG. 2) of the escalator 10, the moving handrail 24 is provided around the support wall part 22, Circulate according to the circulation of the step 18.

  Also, a delta portion 26 that is substantially triangular when viewed from one horizontal direction is formed between the upper floor 14 and the moving handrail 24, and delta guards 28 and 30 are provided in the delta portion 26. . The delta guards 28 and 30 are formed by hanging a plate having a substantially triangular shape or a substantially trapezoidal shape from a part of the building 13 such as a lower part of the upper floor 14 with a chain, or by fixing it to a part of the building 13. Constitute. The safety device 12 of the escalator 10 is provided in order to prevent the users 32 and 34 from colliding with the delta guards 28 and 30.

  That is, the safety device 12 includes an optical sensor 36 that is an entry time sensor, an ultrasonic sensor 38 that is a distance detection sensor, a control unit 40 (FIG. 3), and a swing light 42 that is a warning unit. As shown in FIGS. 1 and 2, one set of optical sensors 36 is provided outside the support wall 22 and the moving handrail 24 on both sides of the escalator 10 (the front and back direction in FIG. 1 and the left and right direction in FIG. 2). Provided. Each set of optical sensors 36 includes a light emitting device 46 provided on a pillar portion 44 erected on the upper floor 14, and a light receiving device 50 provided on a pillar portion 48 erected on the lower floor 16. The light emitting device 46 may be provided on the lower floor 16 and the light receiving device 50 may be provided on the upper floor 14. The optical sensor 36 receives the optical axis 52 emitted from the light emitting device 46 in the direction substantially parallel to the ascending direction of the step 18 (FIG. 2) (the arrow direction in FIG. 1) by the light receiving device 50. The optical sensor 36 can employ various optical sensors such as an infrared sensor. When the optical axis 52 emitted from the light emitting device 46 is blocked by an obstacle, the optical sensor 36 can detect that the user 32 has entered the outside of the handrail 24 assuming that the obstacle is the user 32. . A light blocking detection signal indicating that the optical axis 52 is blocked by each set of optical sensors 36 is input to the control unit 40 (FIG. 3).

  Further, the optical sensor 36 detects the continuous light blocking time when the optical axis 52 is continuously blocked by an obstacle, so that the user 32 when the user 32 gets out of the moving handrail 24 is detected. This continuation time is detected as the moving handrail embarkation duration time. A signal representing the detected start-up duration is also input to the control unit 40 (FIG. 3). It is also possible to calculate and detect the start-up continuation time by the control unit 40 to which the light-shielding detection signal is input without issuing a signal indicating the start-up continuation time by the optical sensor 36. In this case, the light sensor 36 and the start-up duration calculation unit of the control unit 40 constitute a start-up time sensor.

  In addition, as with the optical sensor 36, the ultrasonic sensor 38 is disposed outside the support wall portion 22 and the moving handrail 24 on both sides of the escalator 10 (the front and back direction in FIG. 1 and the left and right direction in FIG. 2). One is provided near each of the 36 light emitting devices 46. Each ultrasonic sensor 38 transmits an ultrasonic wave that is a distance measuring medium substantially parallel to the optical axis 52 emitted from the light emitting device 46, and is reflected by the user 32 when reflected by the user 32 that is an obstacle. The distance from the detection unit to the user 32 is detected by detecting the detected ultrasonic wave with the detection unit. That is, it is possible to measure the time from transmission to reception of the ultrasonic wave, and obtain the distance from the detection unit to the user 32 based on the integration of this time and the velocity of the ultrasonic wave.

  Further, the distance from the detection unit of the ultrasonic sensor 38 to the delta guard 30 on the rear side in the traveling direction of the user 32 is known in advance. For this reason, the ultrasonic sensor 38 detects a guard reach distance L that is a distance from the user 32 who has stepped outward from the moving handrail 24 to the delta guard 30. A signal representing the detected guard reach distance L is input to the control unit 40 (FIG. 3).

  As shown in FIG. 3, the control unit 40 includes a microcomputer having a CPU, a memory, and the like, and includes a warning unit control unit 54 and an operation stop control unit 56. The warning unit control unit 54 detects the direction of the lighting unit of the swing light 42 that is a warning unit when one or both of the ultrasonic sensor 38 and the optical sensor 36 detect the user 32 entering the moving handrail 24. Switch.

  As shown in FIG. 1, the swing light 42 is provided near the delta guards 28 and 30 in the ceiling portion 58 (FIG. 4) of the lower floor 16, which is the lower part of the upper floor 14, and faces downward. It is supported on the ceiling 58. The swing light 42 can switch the direction of the lighting part. That is, as shown in FIG. 4, the support plate 60 is fixed to one end portion of the swing light 42, and the shafts 62 and 64 fixed to the support plate 60 are rotatably supported on the ceiling portion 58. Further, the motor 66 is fixed to the ceiling portion 58, and the shaft 64 fixed to the support plate 60 and the rotating shaft of the motor 66 are integrally provided. Therefore, the rotation of the motor 66 can rotate the shafts 62 and 64 to change the direction of the lighting portion 68 of the swing light 42.

  The swing light 42 is provided with a lighting unit 68 on one side of the housing 70. The lighting unit 68 includes a lens unit 72 made of glass, resin, or the like provided on one side of the housing 70, a support unit 74 provided inside the lens unit 72, and a first light emission disposed on the support unit 74. A colored LED 76 as a means and a white LED 78 as a second light emitting means are included. The colored LEDs 76 and the white LEDs 78 are arranged alternately and evenly on the support portion 74. The white LED 78 is lit by a high frequency current limited by an inverter circuit (not shown). The colored LED 76 is lit by being applied after the DC output from the DC power supply circuit is limited by the control resistor. The colored LED 76 lights up with a different emission color from the white LED 78 such as red, orange and pink. The white LED 78 and the colored LED 76 can be lit individually or both can be lit simultaneously. Further, when the output of the white LED 78 is made larger than the output of the colored LED 76 and the outputs of the white LED 78 and the colored LED 76 are reduced at all light, and the output of the white LED 78 is equal to or less than a preset dimming level, the output of the white LED 78 is colored. It can be made smaller than the output of the LED 76. As a result, when the dimming degree is increased, the light is turned on in white, and when the dimming degree is lowered, the light is turned on in color, and an effect such as giving a feeling of relaxation can be easily performed.

  The warning part control means 54 shown in FIG. 3 is detected from the handrail 24 (FIGS. 1 and 2) of the user 32 (FIGS. 1 and 2) by at least one of the optical sensors 36 and the ultrasonic sensors 38. The direction of the lighting unit 68 is switched so that the lighting unit 68 (FIG. 4) of the swing light 42 is directed to the user 32 who has started from the moving handrail 24 when the outward entry is detected. That is, at the normal time when the user 32 is not detected to be moved outward from the moving handrail 24, the lighting unit 68 is left facing downward. In this case, the lighting unit 68 causes the white LED 78 (FIG. 4) or the colored LED 76 (FIG. 4) to emit light.

  Further, when an abnormality is detected in which the user 32 (FIGS. 1 and 2) starts to move outward from the handrail 24 (FIGS. 1 and 2), the motor 66 (FIG. 4) provided on the swing light 42 is driven. Thus, the motor 66 is rotated by a predetermined angle set in advance, and the direction of the lighting unit 68 that emits white light is switched so that the lighting unit 68 (FIG. 4) is directed to the landing side of the escalator 10. Thus, a warning is generated to the user 32 by the swing light 42. In the case of this example, by directing the lighting unit 68 to the landing side, the light of the swing light 42 can be irradiated to the user 32 who has entered the handrail 24 before reaching the delta guard 30 (FIG. 1). . In addition, the headlight 42 is part of the building 13 and is supported above the delta guard 30, and the lighting unit 68 is directed to the landing side, so that the headlight 42 is ridden from the moving handrail 24 before reaching the delta guard 30. The user 32 can also be irradiated with light.

  In addition, after detecting an abnormal state in which the user 32 (FIGS. 1 and 2) gets out of the moving handrail 24 (FIGS. 1 and 2), the user 32 retracts the body to the inside, whereby the optical sensor 36 and the ultrasonic sensor 38. If the abnormal state is not detected by any of the above, the warning unit control means 54 controls to switch the lighting unit 68 (FIG. 4) of the swing light 42 to the normal state in which it is directed downward.

  In the case of this example, the warning unit control means 54 includes a light emission control means 80. The light emission control means 80 causes the headlight 42 to emit light with the colored LED 76 (FIG. 4) at the normal time when the user 32 (FIGS. 1 and 2) is not detected from the handrail 24 (FIGS. 1 and 2). You can also In addition, the head swing light 42 is caused to emit light by a white LED 78 (FIG. 4) having a light emission color different from that of the colored LED 76 at the time of an abnormality in which the user 32 has been detected from the moving handrail 24. For this reason, it is easy to give the user 32 a feeling of relaxation during normal times, and to alert the user 32 during abnormal times.

  In addition, as shown in FIG. 1, the light emission control means 80 (FIG. 3) is in a normal time from when a predetermined condition set in advance is detected until the arrival of the users 32 and 34 at the landing of the escalator 10 is detected. The lighting state of the swinging light 42 is set so that the swinging light 42 is turned on when the arrival of the users 32 and 34 at the landing of the escalator 10 is detected in the normal time. Control. For example, the predetermined condition is that the operation of the escalator 10 is stopped.

  For example, a landing landing sensor 82 that detects the presence or absence of a person near the landing of the escalator 10 is provided on the ceiling of the lower floor 16. That is, the landing arrival sensor 82 detects the arrival of the user 34 at the escalator landing. The landing sensor 82 is, for example, an infrared sensor. And the light emission control means 80 (or the case of the second light emission control means 84 (FIG. 3) to be described later) does not detect the user 32 who has entered the outside of the moving handrail 24 of the escalator 10, in normal time, in advance. From the time when the set predetermined condition is satisfied until the arrival of the user 34 at the escalator hall is detected, the oscillation light 42 is stopped. Further, the light emission control means 80 or the second light emission control means 84 causes the swing light 42 to emit light when it detects the arrival of the user 34 at the escalator hall in normal times. With this configuration, the swing light 42 can be turned on only when the users 32 and 34 who use the escalator 10 are necessary, and energy saving can be achieved. In addition, according to such switching of the light emission and the light emission stop of the swing light 42, the light emission and the light emission stop of another light 86 (FIG. 1) provided near the landing on the ceiling can be switched. The light 86 is provided at a position where the vicinity of the landing can be effectively irradiated.

Further, the operation stop control means 56 shown in FIG. 3 sets the start-up continuation time detected by the optical sensor 36 as T, the guard reach distance detected by the ultrasonic sensor 38 as L, and a preset positive threshold as A. In this case, it is determined whether or not the following equation is established.
T × (1 / L)> A (1)

  The operation stop control means 56 stops the operation of the escalator 10 (FIGS. 1 and 2) when the condition of the expression (1) is satisfied, and operates the escalator 10 when the condition of the expression (1) is not satisfied. The drive of the escalator drive device 20 is controlled so as to continue. That is, the operation stop control means 56 stops driving the escalator drive device 20 when the expression (1) is established. In the determination of the expression (1), the guard reach distance L may be a distance that is detected first when the user 32 is detected from the handrail 24. That is, if the departure is continued, the distance between the user 32 and the delta guard 30 is gradually reduced, but the guard arrival distance detected first can be used as the guard arrival distance L used for the determination. .

  According to such a safety device for an escalator, when a user 32 who moves on the escalator 10 gets out of the body from the handrail 24, the safety sensor 36 and the ultrasonic sensor 38 can start the vehicle. The user 32 can be alerted by the detection and the swing light 42 generating a warning, that is, irradiating the user 32 with light.

  Further, when the start-up duration T is excessively long by the operation stop control means 56, or when the guard reach distance L is excessively short, the relationship between the start-up duration T and the guard reach distance L is as described above. When it is determined that the relationship of the expression (1) is established, the operation of the escalator 10 is stopped. For this reason, it is possible to more effectively prevent the user 32 from colliding with the delta guard 30 provided in the delta unit 26 while suppressing excessive operation stop of the escalator 10. For example, even if the user 32 and the delta guard 30 that have started out from the handrail 24 are far away from each other, if the start-up duration T is long, it is determined that the user 32 has a high level of maliciousness and the driver Stop.

  In addition, when the guard reach distance L is extremely short, it is determined that the delta guard 30 is very close and the operation is stopped. For this reason, unlike the case of the prior art described in Patent Document 1 and the like described above, when the user 32 gets out of the escalator 10, the user 32 collides with the delta guard 30 regardless of the starting position of the user 32. It can be effectively prevented. Moreover, the excessive driving | operation stop of the escalator 10 can be prevented and it can suppress or prevent producing the discomfort to the other user 34 who is moving normally.

  The swing light 42 is provided on the ceiling 58 of the lower floor 16 which is the lower part of the upper floor 14 so that the direction of the lighting part 68 can be switched. Further, when the warning unit control means 54 detects that the user 32 has started to move outward from the moving handrail 24 by the optical sensor 36 that is a start time sensor or the ultrasonic sensor 38 that is a distance detection sensor, A warning is generated by switching the direction of the lighting unit 68 so that the lighting unit 68 of the swing light 42 is directed to 32. For this reason, the swing light 42 used for lighting in the building 13 at the normal time when the user 32 does not start from the moving handrail 24 can be used as a warning for starting the user 32 from the moving handrail 24. The head swing light 42 normally has two kinds of colored LEDs 76 that are colored lighting means so that the light is adapted to the season, light is emitted in a cool light emission color in summer, and light is emitted in a warm light emission color in winter. As described above, it is also possible to employ a configuration that is provided in the lighting unit 68 and switches the type of the colored LED 76 that the control unit 40 emits according to the signal input from the operation unit that can be operated by the user. For example, the escalator 10 is provided with a temperature sensor or a humidity sensor, and a signal representing a detection value of the temperature sensor or the humidity sensor is input to the control unit 40. The control unit 40 switches the emission color of the colored LED 76 according to the detection value of the temperature sensor or the humidity sensor.

  Further, when the light emission control unit 80 detects the start of the user 32, it is controlled not to simply turn on the swing light 42 in a state in which the direction of the swinging light 42 is changed, but to repeatedly flash intensely. You can also

  Note that the warning unit control unit 54 may include a second light emission control unit 84 (FIG. 3) instead of the light emission control unit 80. In this case, the second light emission control unit 84 causes the lighting unit 68 of the swing light 42 to light at a preset dimming level or less during normal times when the user 32 is not detected from the handrail 24, and the white LED 78 By making the output smaller than the output of the colored LED 76, light is emitted in a color with low light intensity, and the swinging light 42 is made to emit light in white with high light intensity when an abnormality is detected in which the user has boarded from the handrail 24.

  Further, the entry time sensor and the distance detection sensor are not limited to the optical sensor 36 and the ultrasonic sensor 38 as described above, and various sensors can be used. Further, although the case where the warning part is the swing light 42 has been described, the present invention is not limited to this, and as the warning part, a buzzer that emits a warning sound, a sound output device that outputs a recorded warning sound, Various devices such as a display device that displays a predetermined warning on a screen provided near the escalator 10 can also be used.

  10 escalator, 12 safety device, 13 building, 14 upper floor, 16 lower floor, 18 steps, 20 escalator drive, 22 support wall, 24 moving handrail, 26 delta section, 28, 30 delta guard, 32, 34 User, 36 Optical sensor, 38 Ultrasonic sensor, 40 Control unit, 42 Swing light, 44 Column, 46 Light emitting device, 48 Column, 50 Light receiving device, 52 Optical axis, 54 Warning unit control means, 56 Operation Stop control means, 58 ceiling part, 60 support plate, 62, 64 axes, 66 motor, 68 lighting part, 70 housing, 72 lens part, 74 support part, 76 colored LED, 78 white LED, 80 light emission control means, 82 Landing sensor, 84 second light emission control means, 86 lights.

Claims (7)

An escalator safety device for preventing a user from colliding with a delta guard provided in a delta portion formed between an upper floor of a building in which an escalator is accommodated and a moving handrail of the escalator,
A start-up time sensor that detects a user's start-up time of the user's moving handrail when the user starts to go outside from the moving handrail;
A distance detection sensor for detecting a guard reach distance, which is a distance from the user's delta guard when the user goes outside from the handrail,
Warning unit control means for generating a warning by the warning unit when detecting the user's moving from the handrail by at least one of the start time sensor and the distance detection sensor;
Provided with an operation stop control means for stopping the operation of the escalator when T × (1 / L)> A is satisfied, where T is set to T, the guard reach distance is set to L, and the threshold is set to A. An escalator safety device. In the escalator safety device according to claim 1,
The start-up time sensor is an optical sensor having a light-emitting device and a light-receiving device, and detects the start-up time based on a blocking time of an optical axis emitted from the light-emitting device toward the light-receiving device. In the escalator safety device according to claim 1,
The distance detection sensor is an escalator that detects the distance from the delta guard to the user by irradiating the user who has traveled outward from the handrail with the distance measuring medium and detecting the distance measuring medium reflected by the user. Safety device. In the escalator safety device according to any one of claims 1 to 3,
The warning part is a swinging light that is provided on the ceiling of the lower floor, which is the lower part of the upper floor, and allows the direction of the lighting part to be switched,
The warning unit control means directs the lighting part of the swing light to the user who has started out from the moving handrail when detecting the outward start from the moving handrail of the user by the start time sensor or the distance detection sensor. An escalator safety device characterized by generating a warning by switching the direction of a lighting part. In the escalator safety device according to claim 4,
The warning unit control means causes the first light emission light to be emitted by the first light emitting means at a normal time when the user's entry from the moving handrail is not detected, and the alarm light is turned on at an abnormal time when the user's entry from the moving handrail is detected. An escalator safety device comprising: a light emission control means for emitting light with a second light emission means having a light emission color different from that of the first light emission means. In the escalator safety device according to claim 4,
The warning unit control means causes the headlight to emit light in a low-luminance color at normal times when the user's moving from the handrail is not detected, and the headlight when an abnormality is detected from the user's moving handrail, An escalator safety device comprising second light emission control means for emitting white light with high brightness. In the escalator safety device according to claim 5 or 6,
A landing arrival detection means for detecting the arrival of the user at the escalator landing is provided.
The light emission control means or the second light emission control means stops the light emission of the swing light from the time when the predetermined condition set in advance is detected until the arrival of the user at the escalator landing is detected at the normal time. An escalator safety device, wherein a swing light is emitted when the arrival of a user at the escalator landing is detected.

Images