JP4848840B2 - Passenger conveyor safety device - Google Patents

Description

  In a passenger conveyor, it is related with the safety device which prevents colliding with the narrow-angled part posted by the moving handrail of the balustrade upper part of a passenger conveyor, a building, or another passenger conveyor, or a protection body.

  The sensor is composed of a light projecting unit and a light receiving unit, and the light projecting unit emits light vertically downward from the ceiling, and is disposed so as to reflect light from the light source in the horizontal direction and the vertical direction and guide the light to the light receiving unit. A sensor that detects an object based on the presence or absence of light shielding between the light projecting and receiving units is disclosed. (For example, refer to Patent Document 1).

  Consists of a light projecting unit attached to a protector that prevents pinching at the delta guard part and a light receiving unit suspended from the ceiling so as to face the light projecting unit, and whether there is light shielding between the light projecting and receiving units Discloses a sensor for detecting an object approaching the delta guard portion. (For example, refer to Patent Document 2).

JP2000-169071 JP-A-9-301665

  Conventional safety devices for passenger conveyors are installed on the ceiling, so it is necessary to perform wiring and installation work on the ceiling. However, because the ceiling condition varies depending on the facility, installation work is difficult depending on the project. Or it might be impossible.

  The present invention has been made in order to solve the above-described problems, and provides a passenger conveyor safety device that can be installed regardless of the ceiling state.

The safety device for a passenger conveyor according to the present invention detects a shielding body that blocks a detection target range, and detects a narrowed corner portion formed by a moving handrail at a balustrade upper part of the passenger conveyor and a ceiling of the building or another passenger conveyor. A detection unit installed on the decorative plate of the passenger conveyor outside the balustrade part so as to be included in the target range, and an alarm activation unit that issues an alarm according to the detection result of the detection unit, the detection unit detects A distance measuring unit that emits a beam, detects a reflected beam from the shield irradiated with the detection beam, and measures the distance to the shield, and determines that the shield is detected when the distance is equal to or less than a predetermined value. Determination means .

  Since this invention installs the detection part of a safety device in a decorative board of a passenger conveyor, there is an unprecedented remarkable effect that a safety device can be installed without depending on the state of the ceiling of the facility where the passenger conveyor is installed. It is.

Embodiment 1 FIG.
FIG. 1 shows a passenger conveyor and a passenger conveyor safety device according to this embodiment. The passenger conveyor in FIG. 1 is moving upward. The safety device 1 includes a detection unit and an alarm activation unit 3. The detection unit detects a shield that blocks the detection target range, and detects a narrowed corner portion formed by the moving handrail 4 on the upper part of the railing part (also referred to as a deck unit) 5 of the passenger conveyor and the ceiling 9 of the building. And on the decorative plate 6 (including the deck portion or the surface of the deck portion) of the passenger conveyor outside the balustrade portion 5 with respect to the center of the passenger conveyor. The alarm activation unit 3 activates an alarm using the detection result of the detection unit 2 and alerts the passenger.

  Further, the detection unit may be configured by the distance sensor 2. The distance sensor 2 is installed at a predetermined height by a post 7 attached to the decorative board 6 of the balustrade part 5 located outside the moving handrail 4.

  The protector (delta guard) 8 is suspended from the ceiling in order to prevent it from being pinched by the triangular narrow-angle portion formed by the moving handrail 4 and the ceiling portion 9. When the detection unit is configured by the distance sensor 2, the distance sensor 2 includes a distance detection unit that emits a detection beam B1 in the detection direction. The detection beam B1 is emitted from the protector 8 so that the front side portion in the traveling direction of the moving handrail 9 is within the detection range. Specifically, the detection beam B1 is directed diagonally upward from the distance sensor 2 installed outside the moving handrail 4 with respect to the center of the passenger conveyor, on the front side of the traveling direction of the moving handrail 4 from the protector 8. Have been released. The detection beam B <b> 1 only needs to be in the detection range from the protector 8 in the traveling direction of the moving handrail 4, and may be emitted horizontally or obliquely downward.

  FIG. 2 shows details of the safety device 1. The distance sensor 2 constituting the safety device 1 includes a distance detection unit 10 and a determination unit 11. The distance detection unit 10 detects the distance to the detection object existing ahead of the emitted detection beam B1. This detection object is a shield that blocks the detection target range. The determination unit 11 determines whether or not the detection distance in the distance detection unit 10 is equal to or less than a reference value. If the detection distance is equal to or less than the reference value, a signal for the alarm activation unit 3 to issue an alarm is generated. Send to 3. The alarm activation unit 3 activates an alarm according to the signal from the determination unit 11 and alerts the passenger.

  Next, the operation of the passenger conveyor safety device according to the present invention will be described. As described above, the detection beam B1 emitted from the distance sensor 2 exists outside the moving handrail 4 when viewed from the center of the passenger conveyor, so that the passenger existing on the moving handrail 4 or on the passenger conveyor center side from the moving handrail 4 is detected. A passenger or a shield that is outside the moving handrail 4 (hereinafter referred to as the outside from the moving handrail 4) with respect to the center of the passenger conveyor is detected. When the determination unit 11 of the distance sensor 2 determines from the distance detected by the distance detection unit 10 that the passenger or the shield is approaching the protective body (also referred to as delta guard) 8 outside the moving handrail 4. Sends a signal to the alarm activation unit 3, and the alarm activation unit 3 issues an alarm to the passenger.

  The distance detection unit 10 may use an ultrasonic or optical distance detection method. As an optical distance detection method, a method of detecting a distance using light triangulation for detecting a position based on an angle of reflected light or time of flight of light to an object may be used.

  The alarm issued by the alarm issuing unit 3 may be an electronic sound such as a buzzer or an announcement made by a human voice. Further, blinking of light may be used, or an alarm combining light and sound may be used. Moreover, according to the distance which the detection part and the distance sensor 2 detected, you may select either the blink of light, the announcement by an electronic sound, or a human voice.

  The passenger conveyor in the present embodiment is assumed to move upward as described above, but it can be used by switching the normal vertical movement direction, and when it moves downward, it collides with the protector 8. Therefore, the operation of the safety device 1 may be stopped.

  Moreover, in this Embodiment, the safety device in the triangular narrow angle part formed of the moving handrail 4 and the ceiling part 9 was demonstrated. As shown in FIG. 3, in the passenger conveyor crossing in the vertical direction, the collision with the protective body (delta guard) 8 arranged at the triangular portion formed by the moving handrail 4 and the conveyor bottom surface 12 of the passenger conveyor moving downward is performed. The safety device 1 may be arranged to prevent it. As in FIG. 1, the safety device 1 includes a distance sensor 2 and an alarm activation unit 3, and the distance sensor 2 has a detection beam B <b> 1 on a post 7 installed on a column trunk 5 or a decorative plate 6. The output is fixed in a predetermined direction.

  The part corresponding to the detection part of the safety device of the passenger conveyor of Patent Document 1 or 2 has a light emitting part and a light receiving part as separate parts, and it is necessary to install both or one of the light emitting part and the light receiving part on the ceiling. is there. Since the distance sensor 2 of the present embodiment measures the distance with one component, it may be installed at one place. Moreover, it is not necessary to install components on the ceiling as in Patent Document 1 or 2, and the distance sensor 2 of the present embodiment only needs to be installed on the decorative plate 6 of the passenger conveyor, so that it depends on the state of the ceiling portion 9. It is possible to install safety devices.

  According to this Embodiment, since the detection part or the distance sensor 2 was installed in the decorative board 6 of the passenger conveyor, it is possible to install the safety device 1 without depending on the state of the ceiling part 9 at the installation place of the passenger conveyor. it can.

  According to the present embodiment, when the detection unit or distance sensor 2 installed on the decorative plate 6 of the passenger conveyor detects the shield, the alarm activation unit activates the alarm, so that the ceiling portion 9 of the installation site of the passenger conveyor The safety device 1 can be installed without depending on the state.

Embodiment 2. FIG.
In the first embodiment, when the detector or the distance sensor 2 detects the shield, the alarm issuing unit 3 has issued an alarm. In the present embodiment, the distance detected by the distance detecting unit 10 is equal to or less than the reference value. A command to stop or decelerate is sent to the driving unit of the passenger conveyor to stop or decelerate the passenger conveyor.

  FIG. 4 shows a block diagram of the safety device 1 of the present embodiment. The safety device 1 includes a distance sensor 17 and a control command unit 19 connected to the distance sensor 17 so as to be able to transmit signals. The distance sensor 17 includes a distance detection unit 10 and a determination unit 18. The distance detection unit 10 is equivalent to that of the first embodiment, and outputs a detection beam B2 to detect the distance. The determination unit 18 determines whether or not the detection distance of the distance detection unit 10 is equal to or less than a reference value. If the detection distance is equal to or less than the reference value, the control command unit 19 outputs a signal for issuing a control command. Sent to 19.

  The control command unit 19 is a device that outputs a passenger conveyor control command to the passenger conveyor drive unit in response to a signal from the determination unit 18. The control command is a command for decelerating or stopping the passenger conveyor. Based on the stop or deceleration (including the deceleration rate) of the drive unit set in advance for the signal, the control command unit 19 controls the stop or deceleration according to the signal from the determination unit 18 (which may be a detection unit). Send commands to the drive. Other configurations and operations are the same as those in the first embodiment.

  Note that signal transmission between the distance sensor 17 and the control command unit 19 may be transmission by optical communication, radio waves, etc. in addition to signal lines, and physical connection is not necessarily required. In addition, the distance sensor 17 and the control command unit 19 may be configured integrally, or may be configured separately and the distance sensor 17 and the control command unit 19 may be installed at different positions.

  According to the present embodiment, the safety device 1 is installed on the escalator main body and does not involve wiring to the ceiling or construction, and therefore, there is an effect that it can be installed without depending on the state of the ceiling of the facility.

  According to the present embodiment, since the determination unit 18 uses the distance detected by the distance detection unit 10 to obtain a control command to be output to the driving unit of the passenger conveyor, the passenger conveyor is stopped or decelerated depending on the position of the shield. There is an effect that can be controlled.

Embodiment 3 FIG.
In the second embodiment, the passenger conveyor is stopped or decelerated using the distance detected by the distance detection unit 10, but the third embodiment includes an alarm activation unit and a control command unit, and the distance from the shield. In response to this, the alarm is activated and the stop or deceleration of the passenger conveyor is controlled.

  FIG. 5 is a block diagram of the safety device 1 according to the present embodiment. The safety device 1 includes a distance sensor 20, an alarm issuing unit 21, and a control command unit 22. The distance sensor 20 includes a distance detection unit 23 and a determination unit 24. When the detection distance measured by the distance detection unit 23 outputting the detection beam B3 is equal to or less than a predetermined alarm activation distance, the determination unit 24 outputs a signal for the alarm activation unit 21 to issue an alarm. Send to part 21. Upon receiving the signal, the alarm issuing unit 21 issues an alarm.

  When the passenger or the shield approaches the triangular narrow angle part (or protective body) with the movement of the passenger conveyor and the detection distance of the distance detection unit 23 is equal to or less than the predetermined control command distance, the control command unit 22 A signal for issuing a control command is sent to the control command unit 22. Upon receiving the signal, the control command unit 22 sends a stop or deceleration command to the drive unit of the passenger conveyor. Other configurations and operations are the same as those in the first and second embodiments.

  According to the present embodiment, the alarm activation for the passenger and the passenger according to the position of the passenger by performing the alarm command for the passenger and the stop or deceleration control command for the passenger conveyor according to the distance to the passenger or the shield. Either one or both of the conveyor controls can be selected, and there is an effect of suppressing a decrease in convenience due to stoppage or deceleration of the passenger conveyor.

  According to the present embodiment, since the alarm activation for the passenger and the stop or deceleration control command for the passenger conveyor are performed according to the distance to the passenger or the shield, the predetermined alarm activation distance is larger than the predetermined control command distance. By taking this, an alarm can be issued before the change of control of the passenger conveyor, so there is an effect of suppressing a decrease in convenience due to stoppage or deceleration of the passenger conveyor.

Embodiment 4 FIG.
Embodiments 1 to 3 are embodiments using one distance sensor 2, but this embodiment uses a plurality of distance sensors 2 and one alarm activation unit 3, and is used for passengers or shields. An alarm is activated according to the position.

  FIG. 6 shows the passenger conveyor of this embodiment and the safety device 25 for the passenger conveyor. The passenger conveyor of FIG. 6 is installed in the same manner as in FIG. 1, and a protector 8 is installed at the triangular canyon corner that is posted by the ceiling 9 and the moving handrail 4. In the safety device 25 shown in FIG. 6, a first distance sensor 26 and a second distance sensor 27 equivalent to the distance sensor 2 described in the first embodiment are installed at different positions on the decorative plate 6. In addition, each is connected to the alarm activation unit 28. The first distance sensor 16 is fixed so that the detection beam B4 is directed in a predetermined direction by a post 29 installed on the balustrade part 5 or the decorative board 6 as in the above embodiment. Compared to the first distance sensor 26, the second distance sensor 27 is installed on the decorative board 6 at a position away from the moving direction of the passenger conveyor (the moving direction of the moving handrail 4) by a predetermined distance. It is fixed by a post 30. The second distance sensor 28 detects a detection target range in which the detection beam B5 output from the second distance sensor 28 is in a direction opposite to the moving direction of the passenger conveyor from the detection target range of the first distance sensor 27. Fixed so that it can be detected.

  FIG. 7 is a block diagram of the safety device 25 of the present embodiment. The safety device 25 includes a first distance sensor 26, a second distance sensor 27, and an alarm issuing unit 28. As shown in FIG. 7, the first distance sensor 26 includes a first distance detection unit 33 that outputs a detection beam B4 and detects a distance. The second distance sensor 27 includes a second distance detection unit 46 that detects the distance by outputting the detection beam B5. Between the 1st distance sensor 26 and the 2nd distance sensor 27, and the alarm issuing part 28, the 1st determination part 31 and 2nd which are the determination parts of the 1st distance sensor 26 and the 2nd distance sensor 27 Each signal output from the determination unit 32 is connected to the alarm activation unit 28 so as to be transmitted. The alarm activation unit 28 issues different alarms to the signal from the first determination unit 26 and the signal from the second determination unit 27, respectively.

  Specifically, compared to the first distance sensor 26, when a signal for issuing an alarm is received from the second determination unit 32 of the second distance sensor 27 installed on the front side in the moving direction of the passenger conveyor In the case where an alarm with low discomfort to the passenger, such as blinking light, a human voice, or an electronic sound with a low volume, is given, and a signal for activating the alarm is received from the first determination unit 31, Make announcements with loud electronic sounds and human voices. Other configurations and operations are the same as those in the first embodiment.

  Although the case where two distance sensors are arranged has been described above, three or more distance sensors may be arranged and each may issue a different alarm.

  According to the present embodiment, since different alarms are activated according to the detected position of the passenger or the shield, there is an effect of reducing passenger discomfort with respect to the alarm.

  Moreover, according to this Embodiment, since the content of a warning can be changed according to the arrangement position of the detected distance sensor, there exists an effect which reduces the passenger's discomfort with respect to a warning.

Embodiment 5 FIG.
The safety device 25 according to the fourth embodiment includes the plurality of distance sensors 26 and 27 and one alarm issuing unit 28. However, the safety device according to the present embodiment includes the plurality of distance sensors 2, the alarm issuing unit 3, and the control. It is comprised from the instruction | indication part 19, and it can alert or stop or decelerate a passenger conveyor according to the position of a passenger or a shield.

  FIG. 8 is a block diagram of the safety device according to the present embodiment. The safety device shown in FIG. 8 includes a first distance sensor 34, a second distance sensor 35, a control command unit 38, and an alarm issuing unit 39. The first distance sensor 34 includes a first distance detection unit 40 and a first determination unit 36 that output a detection beam B6 and detects a distance, and the second distance sensor 35 outputs a detection beam B7. It has the 2nd distance detection part 41 and the 2nd determination part 37 which detect a distance. The first determination unit 36 is connected to the control command unit 38 so as to be able to transmit, and the second determination unit 37 is connected to the alarm issuing unit 39 so as to be able to transmit. The connection between each determination unit and the control command unit 38 or the alarm activation unit 39 may be a signal line connection or a connection by communication transmission using light or radio waves.

  The first distance sensor 34 is installed such that the detection beam B6 of the first distance detection unit is within the detection range of the front side of the traveling direction of the moving handrail 9 from the protector 8. The second distance sensor 35 is installed at a position away from the first distance sensor 34 by a predetermined distance in the direction opposite to the traveling direction of the moving handrail 4.

  Since the second distance sensor 35 is installed on the near side with respect to the moving direction of the passenger conveyor as compared to the first distance sensor 34, when there are passengers or shields outside the moving handrail 4, first, The second distance sensor 35 detects and sends a signal to the alarm issuing unit 39. Upon receiving a signal from the second distance sensor 35, the alarm issuing unit 39 issues an alarm and alerts the passenger.

  Even after the alarm is activated, if the passenger moves with the passenger or shield outside the moving handrail 4 and the first distance sensor 34 detects the passenger or shield, a signal from the first distance sensor 34 The control command unit 38 that has received the command issues a stop or deceleration command for the passenger conveyor to the drive unit of the passenger conveyor, and the passenger conveyor is stopped or decelerated. Other configurations and operations are the same as those in the first embodiment.

  In the above description, the case where the two distance sensors 34 and 35 are arranged has been described. However, three or more distance sensors 2 are arranged, and each of them issues a different alarm, or issues a stop control or a deceleration control command. Also good.

  According to the present embodiment, a plurality of distance sensors 34 and 35 are installed at different positions, and an alarm activation unit 39 and a control command unit 38 that operate by receiving a signal from the distance sensor are provided. Since the alarm can be activated or the passenger conveyor can be stopped or decelerated in accordance with the position of the passenger or the shield, it is possible to suppress a decrease in convenience due to the stop or deceleration of the passenger conveyor.

  According to the present embodiment, a plurality of distance sensors 34 and 35 are installed at different positions, and an alarm activation unit 39 and a control command unit 38 that operate by receiving a signal from the distance sensor are provided. Depending on the position of the passenger or the shield, it is possible to select alarm activation or control of the passenger conveyor, so that it is possible to suppress a decrease in convenience due to stoppage or deceleration of the passenger conveyor.

Embodiment 6 FIG.
The present embodiment relates to self-diagnosis of the safety device 1 using the distance sensor 2.

  FIG. 9 is a block diagram of the safety device of the present embodiment. The safety device according to the present embodiment includes at least a distance sensor 42 and a failure display unit 45. The distance sensor 42 includes a distance detection unit 44 that detects the distance by outputting the detection beam B8 and a determination unit 43 that receives the distance signal. In the present embodiment, the failure display unit 45 may be connected to the determination unit 11 of each distance sensor 2 of the above embodiment so as to be able to transmit.

  The distance sensor 42 always measures the distance to the ceiling portion 9 when there is no detected object such as a passenger or a shield on the detection beam B8. The distance measured by the distance sensor 42 when there is no detected object depends on the installation of the distance sensor 42 and may be a wall or floor of a building. When the distance sensor 42 is installed, the distance to the ceiling portion 9 is measured in a state where there is no detected object such as a passenger or a shield on the detection beam B8, and this distance is stored in the determination unit 43. Note that the distance measured by the distance detection unit may be stored in the determination unit 43 when the safety device is activated.

  When the distance detected by the distance detection unit 44 is greater than the distance to the ceiling 9 stored in the determination unit 43, the determination unit 43 determines that an abnormality has occurred in the distance detection unit 44 and the failure display unit 45. The failure display unit 45 displays a signal indicating that an abnormality has occurred in the failure display unit 45. Other configurations and operations are the same as those in the above embodiment.

  According to the present embodiment, the measurement distance in a state where there is no detection object at the time of installation of the distance sensor 42 is stored in the determination unit 43, and when a distance greater than this distance is measured, a failure display is performed, Since the abnormality of the distance sensor can be self-diagnosed, it is possible to alert the passenger conveyor manager, and there is an effect that the maintainability is good.

It is a figure which shows the passenger conveyor of Embodiment 1, and the safety apparatus of a passenger conveyor. 1 is a block diagram of a safety device according to Embodiment 1. FIG. It is a figure which shows the passenger conveyor of Embodiment 1, and the safety apparatus of a passenger conveyor. It is a block diagram of the safety device of Embodiment 2. FIG. 10 is a block diagram of a safety device according to a third embodiment. It is a figure which shows the passenger conveyor of Embodiment 4, and the safety device of a passenger conveyor. FIG. 10 is a block diagram of a safety device according to a fourth embodiment. FIG. 10 is a block diagram of a safety device according to a fifth embodiment. FIG. 10 is a block diagram of a safety device according to a sixth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Safety device, 2 distance sensor, 3 alarm issuing part, 4 moving handrail, 5 railing part, 6 decorative board, 7 post, 8 protector, 9 ceiling part, 10 distance detection part, 11 determination part, 12 conveyor bottom face, 13 Protective body, 15 distance sensor, 16 post, 17 safety device, 18 determination unit, 19 control command unit, 20 distance sensor, 21 alarm activation unit, 22 control command unit, 23 distance detection unit, 24 determination unit, 25 safety device, 26 1st distance sensor, 27 2nd distance sensor, 28 Alarm trigger part, 29 post, 30 post, 31 1st determination part, 32 2nd determination part, 33 1st distance detection part, 34 1st Distance sensor, 35 second distance sensor, 36 first determination unit, 37 second determination unit, 38 control command unit, 39 alarm activation unit, 40 first distance detection unit, 41 second distance detection Parts, 42 distance sensor 43 determination unit, 44 a distance detecting unit, 45 a fault display unit, 46 a second distance detection unit, B1, B2, B3, B4, B5, B6, B7, B8 detection beam.

Claims (9)

A shield that blocks the detection target range is detected, and the outside of the balustrade part is included so that the detection target range includes a narrowed corner portion formed by a moving handrail at the top of the railing of the passenger conveyor and the ceiling of the building or another passenger conveyor. A detection unit installed on the decorative plate of the passenger conveyor of,
An alarm activation unit that issues an alarm according to the detection result of the detection unit ,
The detection unit emits a detection beam, detects a reflected beam from the shield irradiated with the detection beam, and measures a distance to the shield, and the distance is a predetermined value or less. A passenger conveyor safety device , comprising: a determination unit that determines that the shield has been detected . A protective body is provided at a narrowed corner portion formed by a moving handrail at the top of the balustrade of the passenger conveyor and the ceiling of the building or other passenger conveyor,
2. The passenger conveyor safety device according to claim 1, wherein the detection unit is installed such that a front side portion of the traveling direction of the moving handrail is within a detection range from the protector. The safety device for a passenger conveyor according to claim 1 or 2 , wherein the detection beam is an ultrasonic wave or light. The detecting unit changes an alarm signal to be sent to the alarm issuing unit according to the measured distance measured by the distance measuring means, and the alarm issuing unit changes the type of alarm according to the alarm signal from the detecting unit. The safety device for a passenger conveyor according to claim 1 or 2 . Provided with a control command unit that sends a control command to the drive unit of the passenger conveyor,
When the detection unit detects the shield, it sends a detection signal to the control command unit,
The said control command part sends the said control command to the said drive part according to the said detection signal, The safety apparatus of the passenger conveyor of Claim 1 or 2 characterized by the above-mentioned. Provided with a control command unit that sends a control command to the drive unit of the passenger conveyor,
The detection unit sends an alarm signal to the alarm activation unit when the measured distance measured by the distance measuring unit is equal to or smaller than a predetermined first threshold, and the measured distance is equal to or smaller than a predetermined second threshold. 3. A passenger conveyor safety device according to claim 1, wherein a detection signal is sent to the control command section. A plurality of detection units having different detection ranges at the front side portion in the traveling direction of the moving handrail from the included angle portion,
3. The passenger conveyor safety device according to claim 1, wherein the alarm issuing unit issues an alarm determined for each of the detection units when receiving an alarm signal from the detection unit. The detection unit has a failure display means for displaying a failure of the distance measurement means,
3. The passenger conveyor safety device according to claim 1, wherein the determination unit sends a failure signal to the failure display unit when the measurement distance measured by the distance measurement unit is equal to or greater than a reference value. 9. The passenger conveyor safety device according to claim 8 , wherein the reference value is a distance from the distance measuring means to the ceiling or the wall surface.

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