JP2001164833A - Platform door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a platform door device for which safety is enhanced. SOLUTION: The device includes a door 3 placed in the landing position of a platform 15 while being suspended from a guide rail 9 provided within a door pocket 5, catch sensing means 7 and 20 including a contact type sensor 20 provided on a side edge of the side of the door 3 outside the door pocket 5, drive means 11 and 13 provided within the door pocket 5 for opening and closing the door 3, a means 10 provided in the door pocket 5 for locking the door 3 in a closed state, and a door movement control means 7 provided within the door pocket 5 for controlling the opening and closing movement of the door 3. The lock means 10 is actuated a predetermined time after the door movement control means 7 has closed the door. Thus, even if an object or the like of size equal to or smaller than the dead zone of the contact type sensor is caught in the door 3, the door 3 can be opened before being locked, resulting in enhanced safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a platform door device having a door provided at a platform position.

[0002]

2. Description of the Related Art In a platform such as a railway, a monorail, and a new transportation system, a platform door device is provided at a platform position, that is, a position corresponding to a vehicle-side door at an edge of the platform, for safety of passengers on the platform. Has been established. In the platform door device, the platform side door is opened and closed according to the stop of the vehicle, the opening and closing operation of the vehicle side door, and the like. When the vehicle is not stopped, that is, when the vehicle is not entering the line or the vehicle is running. At times, the platform side door is closed. Further, the door is locked in the closed state by operating the lock means so that the platform side door in the closed state is not easily opened.

[0003] Such a platform door device is provided with pinch detection means, and a contact-type sensor constituting the pinch detection means is provided at the door side edge. The entrapment detection unit is, for example, a pressure-sensitive sensor, and detects a person or an object when a person or an object comes into contact with a side edge of the door, that is, a contact sensor during the door closing operation. When the entrapment detecting means detects a person or an object, the platform door device stops the door closing operation and performs the door opening operation again to prevent the person or the object from being entrapped in the door. In. On the other hand, when the entrapment detection unit does not detect a person or an object, the door moves until the door is closed, and the door is kept closed by the operation of the lock unit.

[0004]

By the way, in the platform door device, if the sensitivity of the sensor of the pinch detecting means is increased, the contact between the side edges of the double-sided door and the door in the single-sided door are improved. The door closing operation is stopped by detecting the contact between the side edge of the door and the contact surface that comes into contact with the side edge of the fence door provided on the platform. Can not be done. For this reason, it is necessary to set the sensitivity of the sensor to such a degree that the contact between the side edges of the door and the contact surface of the fence is not detected.

However, if the sensitivity of the sensor is set to such a degree that the contact between the side edges of the door or the contact between the side edge of the door and the contact surface of the fence is not detected, an insensitive area is generated in the sensor. If an object is caught between two doors or between the door and the fence contact surface, the entrapment cannot be detected if the object is smaller than the dead zone. Would. Therefore, in the conventional platform door, when a thin object such as a tip of an umbrella or a cane, or a thin object such as clothes or a belt portion of a bag or the like having a size equal to or less than the insensitive area of the sensor is sandwiched in the door, The pinch detection means cannot detect those objects, and the door is completely closed and the locking means is operated to be locked. Therefore, it is sometimes impossible to easily pinch an object into the door. For this reason, from the viewpoint of safety, it is necessary to confirm the occurrence of pinching of an object or the like by a station staff or a vehicle crew, or to eliminate the pinching state. Therefore, in order to ensure the safety of passengers, etc., and to reduce the work of checking the occurrence of pinching and the work of eliminating pinching by station staff and vehicle crews, things smaller than the size equivalent to the dead zone are pinched by the door. Even in such a case, there is a demand for a platform door device with improved safety that can easily eliminate the pinched state.

Here, in order to avoid being caught in the door, a non-contact sensor such as a photoelectric sensor or an acoustic sensor can be considered as a sensor used for the caught detection means that hardly generates a dead area. However, when detecting a person or object at the side edge of the door, it is necessary to be able to detect a person or object at any part of the side edge of the door. Parts and oscillating parts,
It becomes necessary to install the light receiving unit and the receiving unit all over the side edge of the door, which leads to a complicated device, an increase in cost, and a deterioration in maintainability. Furthermore, the platform door device is often used outdoors, and when used outdoors, the factors of disturbance increase. Therefore, a non-contact sensor may not be able to detect a person or an object with high accuracy.

An object of the present invention is to improve the safety of a platform door device.

[0008]

The platform door device of the present invention solves the above problems by the following means. A door disposed at the platform entry / exit position, a pinch detecting means including a contact sensor provided at a side edge of the door, a driving means for opening and closing the door, a means for locking the door in a closed state, Door opening / closing control means for controlling opening / closing, wherein the lock means is operated after a predetermined time has passed since the door opening / closing control means is in a closed state.

Accordingly, the door is locked after a predetermined time has elapsed after the door is closed, so that even if an object smaller than the size corresponding to the dead area of the contact sensor is caught in the door, the door is locked. The door can be opened by letting the pinch detecting means detect the pinch by rocking the object, etc., and the door can be moved in the door opening direction until the door is locked. it can. In other words, since the door can be opened until the door is locked, the pinched state can be easily eliminated by moving the door in the door opening direction and pulling out the pinched object or the like. And safety can be improved.

In addition, a pinch detection means including a door suspended on a guide rail provided in the door pocket and disposed at a platform getting on / off position and a contact sensor provided on a side edge of the door outside the door pocket. Driving means provided in the door pocket to open and close the door, means provided in the door pocket to lock the door in a closed state, and door opening and closing control means provided in the door pocket and controlling opening and closing of the door. The locking means is actuated after a lapse of a predetermined time from when the door opening / closing control means enters the closed state.

At this time, the door opening / closing control means performs the door opening operation when the pinch detection means detects the pinch within a predetermined time after the door is closed, and the pinch detection means performs the pinch operation for the predetermined time. Is not detected, the closed state of the door is locked by the lock means.

Further, when the door is locked in the closed state by the locking means, if the door forms a gap at least equal to the dead area of the contact sensor, it corresponds to the dead area of the contact sensor. Since it is possible to prevent things smaller than the size from being caught in the door,
Safety can be improved.

At this time, means for restricting the range of movement of the door is provided, and the gap is adjusted by means for restricting the range of movement.
The gap can also be controlled by the door opening / closing control unit controlling the driving unit to adjust the stop position of the door in the closed state.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of a platform door apparatus to which the present invention is applied will be described with reference to FIGS. FIG. 1 is a front view showing a schematic configuration of a platform door device to which the present invention is applied, with a part of a door pocket cut away. FIG. 2 is a cross-sectional view of FIG.
It is an arrow view in the II line. FIG. 3 is a side view showing a schematic configuration of the platform door device. FIG. 4 is a diagram showing a schematic configuration of a circuit in the door opening / closing control panel. FIG. 5 is a diagram illustrating a state where the platform door device is installed on the platform. FIG. 6 is a flowchart showing the operation of the platform door device. Note that the platform door device of the present embodiment can be used for various transportation means such as a railway, a monorail, and a new transportation system that get on and off a vehicle from a platform.

[0015] Platform door device 1 of the present embodiment
As shown in FIGS. 1 to 3, a door 3, a door pocket 5, a door opening / closing control panel 7, a guide rail 9, an electromagnetic lock 10, a motor 1
1, and a driving belt 13 and the like. The door pocket 5 formed of a rectangular flat box is provided with a platform 15.
The platform door device 1 is installed along the edge of the platform 15 on two pedestals 16 for fixing the platform door device 1 with fixing means such as bolts (not shown), and inside the door opening / closing control panel 7, the guide rail 9, Electromagnetic lock 10, motor 1
1, a driving belt 13 and the like are disposed, and a rectangular flat door 3 is inserted into a slit opening 17 formed on one side surface.
Is inserted.

The door 3 is suspended by two support rollers 18 provided at both ends of the bottom surface of the door 3 and a linear guide rail 9 installed substantially horizontally in the door pocket 5 and fixed to the door 3. Supported by the hanger 19. A pressure-sensitive sensor 20 is provided over the entire side edge of the door 3 at the side edge in the movement direction when the door 3 is closed, that is, at the side edge outside the door pocket 5. The hanger 19 is provided with driving rollers 21 and 23 installed at substantially horizontal positions at both ends in the door pocket 5.
The hanger 19 is guided by the guide rail 9 by the rotation of the motor 11 connected to the driving roller 21 and the edge of the platform 15 is connected to the driving belt 13 stretched over the , The door 3 opens and closes. Thus, the motor 11, the driving belt 13, the driving rollers 21, 23,
And the like constitute driving means.

The electromagnetic lock 19 is installed on the side of the door pocket 5 where the door 3 is inserted, that is, on the side where the opening 17 is formed. When the door 3 is closed, the hanger 19 is closed. The lock pin 27 of the electromagnetic lock 19 is mounted at a position corresponding to an opening (not shown) formed on the upper surface of the electromagnetic lock 19. In other words, when the door 3 is closed, the lock pin 27 of the electromagnetic lock 10 is closed.
Can be inserted into an opening (not shown) formed on the upper surface of the hanger 19. In the door pocket 5, a chime 29 for notifying that the door is to be closed is provided.
However, an emergency unlocking button 31 for forcibly returning the lock pin 27 of the electromagnetic lock 19 to the unlocking position is installed on the side of the door pocket 5 where the opening 17 is formed.

The door opening / closing control panel 7 is, as shown in FIG.
The control unit 33 includes a microcomputer, a gate drive control circuit 35 formed in the control unit 33, a gate circuit 37, a rectifier 39, a capacitor 41, a power supply circuit 43, and a contact 45. Door open / close control panel 7
Is connected to an external power supply such as a 100 V AC power supply, and the power supplied from the power supply is supplied from the rectifier 39 to the gate circuit 37 via the contact 45 and from the power supply circuit 43 to the control unit 33. Respectively. The gate circuit 37 is electrically connected to the gate drive circuit 35 of the control unit 33 and the motor 11 respectively.
Is an electromagnetic lock 10, a pressure-sensitive sensor 20, and a chime 2
9 and the like. Further, the control unit 33
Transmits and receives signals to and from the integrated control device 47 installed outside the platform door device 1. Platform door device 1 of the present embodiment having such a configuration
As shown in FIG. 5, as part of a fence 49 extending to the edge of the platform 15,
The door 3 of the vehicle 51 is located at a position corresponding to the door 53 of the vehicle 51, that is, at a position where the platform 15 gets on and off. The platform door device 1 of the present embodiment is of a double-opening type, and is configured as a set of two symmetrical units 1a and 1b including a door 3 and a door pocket 5. A door opening / closing control panel 7 is installed in the door pocket 5 of one of the units 1a.
a, 1b are controlled. Door open / close control panel 7
Is electrically connected to the general control device 47 provided in the station service room 55 and the like, and the open / closed state of the door 3 of the platform door device 1 is combined with information such as the status of the vehicle 51 and the like. It is displayed on the display panel 57.

When the vehicle 51 enters the station, the vehicle 51
Transmits an arrival signal indicating that the vehicle has stopped at a predetermined stop position to the general control device 47 in the station office 55. Upon receiving this arrival signal, the general control device 47 transmits a door opening command signal to the door opening / closing control panel 7 of the platform door device 1. The platform door device 1 performs the door opening operation of the door 3 according to the door opening command signal.

On the other hand, when the vehicle 51 departs, the crew, who has confirmed that the passengers have entered and exited, issues a command (not shown) to close the door 3 such as a button installed inside the vehicle 51 or on the platform 15. By operating the means, a command to close the door 3 of the platform door device 1 is issued. At this time, the instruction to close the door can be transmitted in conjunction with an operation of a button for closing the door 53 of the vehicle 51 side. In response to the command to close the crew, the general controller 47 of the station room 55
A door closing command signal 59 is transmitted to the door opening / closing control panel 7 of the platform door device 1. Control unit 33 of door opening / closing control panel 7
4 and 6, when the control unit 33 of the door opening and closing control panel 7 receives this door closing command signal (step 10).
1) The gate drive control circuit 35 is operated to drive the motor 11 to start the door closing operation of the door 3 (step 103). During the closing operation of the door 3, the control unit 33 detects that a person or an object is trapped between the left and right doors 3 due to an increase in the pressure detected by the pressure-sensitive sensor 20 (step 105). ). When the control unit 33 detects the entrapment, the gate drive control circuit 35 that has received the entrapment detection signal reverses the motor 11 and performs the reopening operation (Step 107). When the reopening is completed (Step 109), the door closing operation is started again (Step 11).
1). When the entrapment is detected again, Steps 107 to 111 are repeated. As described above, in the present embodiment, the control unit 33, the pressure-sensitive sensor 20, and the like constitute a pinch detection unit.

If no entrapment is detected during the closing operation or the re-closing operation in Step 103 or Step 111, the door 3 completes closing (Step 113).
Here, even if the closing of the door 3 is completed, the trapping is detected (step 115), and the emergency closing state of the door 3 is locked by the electromagnetic lock 10 for a predetermined time input in advance by the control unit 33. Without waiting (step 117).

In steps 115 and 117, after the door is closed, a thin object such as a tip of an umbrella or a stick, for example, an object having a size equal to or less than a dead area of the pressure-sensitive sensor 20,
Also, when a thin object such as a belt portion of clothes or a bag is caught between the doors 3, the control unit 33 detects the entrapment for a predetermined time by swinging them to pull them out from between the doors 3. In this case, the reopening operation of step 107 is performed, and then steps 109 to 115 are repeated. If the control unit 33 does not detect the entrapment for a predetermined time after the door is closed, the control unit 3
3 operates the electromagnetic lock 10 and inserts the lock pin 27 of the electromagnetic lock 10 into an opening (not shown) formed on the upper surface of the hanger 19 of the door 3 to lock the door 3 in the closed state (step 119). ), And transmits a closing completion signal to the general control device 47. In the present embodiment, the time in step 117 is appropriately set between 0.5 seconds and 3 seconds for each station, taking into consideration that a delay in the operation time of the vehicle 51 does not occur. However, the time in step 117 can be appropriately set according to the type of transportation means, the operation state, and the like.

The integrated control device 47 is a door opening / closing control panel 7 of all the platform door devices 1, that is, the control unit 33.
When the door closing completion signal is received from the driver, the vehicle driver transmits a departure preparation completion signal to the crew, and upon receiving the departure preparation completion signal from the general control device 47, the crew starts the vehicle 51.

As described above, in the platform door apparatus 1 of the present embodiment, after the door 3 is closed, the closed state of the door 3 is locked by the electromagnetic lock 10 after a lapse of a predetermined time. Even when an object smaller than the size corresponding to the dead area of the pressure-sensitive sensor 20 is caught, the control unit 33 detects the entrapment by swinging the object caught between the doors 3 and opens the door 3. The door 3 can be moved in the door opening direction until the closed state of the door 3 is locked by the electromagnetic lock 10.
That is, since the door 3 can be opened until the door 3 is locked by the electromagnetic lock 10, the door 3 can be easily moved by moving the door 3 in the opening direction and pulling out the sandwiched object. The pinched state can be eliminated, and safety can be improved.

In the present embodiment, the electromagnetic lock 20 for mechanically locking the door 3 in the closed state by inserting the lock pin 27 is used as the locking means for closing the door 3 in the closed state. Mechanical locking means, and various locking means for supplying electric power so that the motor 11 generates a predetermined torque when the door 3 is locked in the closed state, and for preventing the door 3 from moving in the door opening direction. Can also be used.

Further, in the present embodiment, the pinch detecting means is constituted by the control section 33 of the door opening / closing control panel 7 and the pressure-sensitive sensor 20 and the like. However, in order to detect pinch separately from the control section 33 and the like. The control means for detecting the entrapment and the pressure-sensitive sensor 20 may constitute the entrapment detection means.

(Second Embodiment) A second embodiment will be described with reference to FIG. FIG. 7 is a diagram showing a schematic configuration of a platform door device to which the present invention is applied. Note that, in the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, and the configuration and features different from those in the first embodiment will be described. The difference between the platform door device 61 of the present embodiment and the first embodiment is that in the case of the double-opening type, a predetermined distance between the doors 3 of the units 61a and 61b of the platform door device 61 in the closed state in the closed state. The closed state is locked by the electromagnetic lock 20 in a state where the gap is formed. That is, as shown in FIG. 7, the units 61a, 6
Immediately after the door 3b is completed, the door 3 is locked with a predetermined gap D formed between the doors 3. In the present embodiment, the gap D is set to 5 mm or more and 10 mm or less from the size of the dead area of the pressure-sensitive sensor 20 used for the pinch detection means. However, the gap D can be appropriately set according to the type and performance of the contact type sensor used for the pinch detection unit, the type of the transportation unit, and the like. For example, if the gap D is 200 mm to 300 mm, even if a person is left behind between the vehicle 51 and the door 3, the person can slip through the gap D between the doors 3 and escape into the platform 15.

In this embodiment, a mechanical limiter for the movement range such as a stopper (not shown) made of a bolt or the like abutting on the door 3 provided in the door pocket 5 of the platform door device 61 is adjusted. The gap D is controlled. However, the gap D can also be controlled by using the motor 11 as a stepping motor, the control unit 33 of the door opening / closing control means 7 controlling the rotation of the motor 11, and adjusting the stop position of the door 3 in the closed state. .

As described above, in the platform door device 61 of the present embodiment, the door 3 is locked in a state where the gap D having a distance equal to or larger than the size corresponding to the dead area of the pressure-sensitive sensor 20 is formed between the doors 3. The pressure-sensitive sensor 20
Can be prevented from being caught in the door, and the safety can be improved.

In the second embodiment, the electromagnetic lock 10 is operated immediately after the door 3 of the platform door device 61 completes closing the door to lock the door closed state. However, as in the first embodiment, After a lapse of a predetermined time, the closed state of the door 3 can be locked.

In the first and second embodiments, the double-opening platform door devices 1 and 61 have been described. However, the present invention is not limited to this, and may be applied to a single-opening platform door device and the like. it can. In addition, the present invention can be applied not only to the platform door devices 1 and 61 having the configurations of the first embodiment and the second embodiment but also to platform door devices having various device configurations.

[0032]

According to the present invention, the safety of the platform door device can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a schematic configuration of a first embodiment of a platform door device to which the present invention is applied, with a part of a door pocket cut away.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is a side view showing a schematic configuration of a first embodiment of a platform door device to which the present invention is applied.

FIG. 4 is a diagram showing a schematic configuration of a circuit in a door opening / closing control panel of the first embodiment of the platform door device to which the present invention is applied.

FIG. 5 is a diagram showing a state where the platform door device of the first embodiment to which the present invention is applied is installed on the platform.

FIG. 6 is a flowchart showing an operation of the first embodiment of the platform door device to which the present invention is applied when the door is closed.

FIG. 7 is a diagram showing a schematic configuration of a second embodiment of a platform door device to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Platform door device 3 Door 5 Door bag 7 Door opening / closing control panel 9 Guide rail 10 Electromagnetic lock 11 Motor 13 Drive belt 15 Platform 20 Pressure sensitive sensor

Claims (5)

[Claims] 1. A door disposed at a platform entry / exit position, a pinch detection unit including a contact sensor provided at a side edge of the door, a driving unit for opening and closing the door, and a door closed state. A platform door device comprising: a locking means; and a door opening / closing control means for controlling opening / closing of the door, wherein the locking means is operated after a lapse of a predetermined time from when the door opening / closing control means is closed. 2. Suspended on a guide rail provided in a door pocket,
A door disposed at a platform entry / exit position, a pinch detecting means including a contact sensor provided on a side edge of the door outside the door pocket, and a drive provided in the door pocket to open and close the door Means, provided in the door pocket, for locking the door in a closed state, and door opening / closing control means, provided in the door pocket, for controlling opening / closing of the door, wherein the door opening / closing control means A platform door device for operating the locking means after a predetermined time has passed since the door was closed. 3. A door provided at a platform getting on and off position, a pinch detecting means including a contact sensor provided on a side edge of the door, a driving means for opening and closing the door, and a door closed state. Locking means, and door opening / closing control means for controlling opening / closing of the door, wherein the door opening / closing control means detects the jamming within a predetermined time after completion of the closing of the door. A door opening operation of said door, and a platform door device for locking said door closed state by said locking means when said entrapment detecting means does not detect entrapment for said predetermined time. 4. A door provided at a platform getting on and off position, a pinch detecting means including a contact type sensor provided at a side edge of the door, a driving means for opening and closing the door, and a door closed state. A door opening / closing control unit for controlling opening / closing of the door, wherein when the door is locked in a closed state by the locking unit, the door corresponds to at least a dead area of the contact sensor. A platform door device that forms a gap longer than the distance. 5. Suspended on a guide rail provided in a door pocket,
A door disposed at a platform entry / exit position, a pinch detection unit including a contact sensor provided on a side edge of the door outside the door pocket, and a door provided inside the door pocket to open and close the door; Driving means, means provided in the door pocket to lock the door in a closed state, and door opening / closing control means provided in the door pocket and controlling opening and closing of the door, comprising: A platform door device wherein when the door is locked in a closed state by a locking means, the door forms a gap at least equal to a dead area of the contact sensor.