JPH11343776A - Safety device in home door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compacted safety device, in which there is no trouble of the movement of an electric wiring with door open-close operation. SOLUTION: The safety device consists of rods 22 attached to the home door 4 so as to receive specified force and be pushed backwards by the collision of a foreign matter against the door stop section 21 of the home door 4 for a home door device for a platform, a reflector 30 mounted on the home door 4, and a photodetector 29 set up to a door storage case 1 for receiving reflected light from the reflector 30 by projection light to the reflector 30. The safety device has a light shielding mechanism 31 interlocked with the pushing of the rods 22 and set up on the home door 4 so that light reception is interrupted and a control section 17 provided at the side of the door storage case 1 so as to command door-opening driving for a specified time to a driving device 10 for opening and closing the door during a door-closing driving command by the operation of the photodetector 29 at the time of light shielding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home door device for protecting a platform in a station premises from a danger such as a fall of a passenger on a track or a tentacle. The present invention relates to a safety device for a home door in which the door opening drive is performed by detecting this when it is sandwiched between the doors.

[0002]

2. Description of the Related Art In order to prevent passengers passing through a platform or waiting near the platform from falling off the platform and preventing accidents caused by tentacles, the platform is linked with the opening and closing operation of a vehicle door. A home door device having a structure for opening and closing a home side door has been conventionally used. In this home door device, a plurality of door pockets arranged at intervals along the platform form a passage for getting on and off the train, and the home door projects substantially horizontally straight from the door pocket. Generally, a structure for closing a passage for getting on and off and opening a passage for getting on and off with a home door stored in a door pocket is generally used. When a passenger or a portable item is caught in the door stop of the home door, this is detected and the home door is driven in the door opening direction, whereby a safety device that eliminates the entrapment is provided. ,Are known.
In this safety device, a collision detection member that is pushed rearward when a foreign object collides is provided at the front end portion (door stop portion) of the home door, and this rearward movement of the collision detection member is optically performed, for example. Alternatively, the door is electrically detected, and the control unit instructs the door drive motor to open the door by this detection operation. In this case, the collision detecting member and the optical or electric detecting means for detecting the rearward movement are provided on the side of the home door, and the control unit and the door driving motor are provided on the side of the door pocket. The equipment is provided, and the optical or electrical detection means and the control unit are connected by electric wiring.

[0003]

[Problems to be solved by the invention]
It is desirable that the home door itself be short in order to improve the visibility before and after the train from the inside of the home door, and that the periphery of the home door be exposed such as protrusions and electric wiring. I want to eliminate the members. However, in the above-described safety device, the portion of the electric wiring on the home door side moves as the home door moves for opening and closing, which is troublesome. In addition, considerable space is required to accommodate the electrical wiring in the door pocket in consideration of such moving parts. The present invention solves such a problem of a safety device for preventing foreign matter from being caught in a home door, and the electric wiring remains stationary irrespective of the door opening / closing operation. The trouble of moving is eliminated, and the compact
A safety device for the door 4 is provided.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a plurality of door pockets 1 arranged at a distance from each other form a passage for getting on and off the train.
In the home door device for a platform, which protrudes from the door pocket 1 in a substantially horizontal straight line to close the entrance / exit passage, and the home door 4 is stored in the door pocket 1 to open the entrance / exit passage, the door contact of the home door 4 is provided. A rod 22 provided on the home door 4, a reflector 30 provided on the home door 4, and a light source, which are pushed backward by receiving a predetermined force when a foreign object collides with the portion 21. A light detector 29 provided on the door pocket 1 for projecting light on the reflector 30 and receiving reflected light from the reflector 30;
The light blocking mechanism 31 provided in the home door 4 so as to block the light reception in conjunction with the pushing of the rod 22, and the operation of the light detector 29 at the time of the light blocking, the door is opened and closed during the door closing drive command. And a control unit 17 provided on the side of the door pocket 1 so as to instruct the door driving device 10 to open the door for a predetermined time.

As a result, the home door 4 is closed during the door closing operation.
When there is no object that collides with the door stop portion 21, that is, when no passenger or portable goods are caught, there is no pushing movement of the rod 22, so that the light detector 29 is thrown onto the reflector 30. Light received from light and reflected light is not blocked. Since the light detector 29 does not operate and no command to drive the door opening is issued from the control unit 17, the door closing operation is performed as specified by the door opening / closing drive device 10. On the other hand, when a foreign object collides with the door stop 21 of the home door 4 during the door closing operation, the rod 22 is pushed backward and the light detector 2
9 and the reflected light from the reflector 30 are blocked. The light detector 29 is operated, and a command to open the door is issued from the control unit 17 to the door opening / closing drive device 10 for a predetermined time, the home door 4 is opened, and the home door 4 is opened.
Accidents that trap foreign matter are quickly avoided.

As described above, the safety device is composed of the photodetector 29 and the control unit 17, which are members requiring electric wiring, and the rod 22, the reflector 30, and the light shielding mechanism 31, which are members not requiring electric wiring. The light detector 29 and the control unit 17, which are members requiring electric wiring, are provided on the side of the door pocket 1, which is a stationary member, and the rod 22, the reflector 30, and the light shielding mechanism 31 are moving members. It is provided on the home door 4. As a result, the electric wiring can be provided on the side of the door pocket 1, and this electric wiring remains stationary irrespective of the opening / closing operation of the door 4, and the electric wiring of the related art in which the electric wiring moves with the opening / closing operation of the door 4. Such troublesomeness is eliminated, and the safety device is made compact.

[0007]

1 to 5 show one embodiment of a safety device for a home door according to the present invention.
FIG. 1 is a front view of the closed state of the door with the door pocket 1 cut away. For example, a plurality of door pockets 1 having a height of about 1 m are arranged at intervals along the platform 2, and a space between the adjacent door pockets 1 and 1 is a passage for getting on and off the train.
In the following description, only one door pocket 1 is illustrated.
The right direction is called front, the left direction is called back,
In FIGS. 1 to 4, the front and back directions of the paper are referred to as left and right directions.

A rail 3 is provided at the lower part of the door pocket 1 on a platform.
A slide part 5 which is provided horizontally along the home 2 and closely fits over the rail 3 is attached to the home door 4. That is, the bracket 6 is attached to the lower rear end of the home door 4, and the slide portion 5 is fixed to the bracket 6. Since the slide portion 5 straddles the rail 3, the boss 3 is supported only on the lower side.
The door 4 does not fall right and left. A ball (not shown) is interposed in the fitting portion between the rail 3 and the slide portion 5 so that the slide operation is smooth. Ray
The handle 3 is mounted on a lower horizontal frame 7 of the door pocket 1.
A drive device 10 having a speed reducer 9 is installed on the bottom horizontal frame 8 of the door pocket 1, and the arm drive shaft 1 of the drive device 10 is provided.
1 is set so as to be close to a plane including the rear end of the home door 4 at the door opening position (indicated by a dotted line in FIG. 1). The driving device 10 is constituted by a motor (not shown),
The speed reducer 9 comprises a hypoid gear (not shown) attached to the armature shaft of the motor and the arm drive shaft 11.

The base of the arm 12 is fixed to the arm drive shaft 11, and a bracket 13 is attached to the rear end of the home door 4. The pivoting end of the arm 12 and the bracket 13 are linked. The pins 14 are connected by pins. That is, the front end of the bracket 13 and the link 14 are connected by the door-side connecting pin 15, and the rear end of the link 14 and the rotating front end of the arm 12 are connected by the arm-side connecting pin 16. doing. 1 of FIG.
When the home door 4 is in the open position as shown by the dashed line, the door-side connecting pin 15 is located forward of the arm 12, and the bending angle A of the link 14 with respect to the arm 12 and the vertical line VL. The angle of inclination B of the link 14 is each equal to or greater than a predetermined value, and the arm-side connecting pin 16 is located near the vertical plane including the axis of the arm drive shaft 11 (slightly rearward in the embodiment of FIG. 1). It is set to be. When the home door 4 is in the door closed position (shown by a solid line in FIG. 1), the link 14 is in a substantially horizontal posture and the arm
2 so that the angle C is less than 180 degrees.
And the length of the link 14 and the like. The predetermined value of the bending angle A at the door opening position is preferably about 10 degrees, and the predetermined value of the inclination angle B of the link 14 with respect to the vertical line VL is preferably about 30 degrees.

When in the open position, the angle A of the arm 12 with respect to the link 14 and the link 1 with respect to the vertical line VL
4 are equal to or greater than a predetermined value, when the arm 12 at the open position shown by the two-dot chain line in FIG. 1 is rotated clockwise in the door closing direction, the link 14 is initially connected to the door side connecting pin. While turning clockwise around 15, the arm side connecting pin 1
6, the link 14 turns counterclockwise around the door-side connecting pin 15 when it is pushed forward (in the direction of closing the getting-in / out passage) and crosses the vertical plane including the axis of the arm drive shaft 11. While being pushed forward. The home door 4 is pushed forward by the pushing of the link 14, and the getting-in / out passage is closed. Link 1 when home door 4 is in the closed position
Reference numeral 4 denotes a substantially horizontal posture, and since the angle C of the arm 12 with respect to the link 14 is less than 180 degrees, the arm 12 in the closed position shown by the solid line in FIG. Then, the home door 4 is pulled by the link 14 and towed rearward (in the direction of opening the passage for getting on and off) to open the passage for getting on and off. In front of the driving device 10, a control unit 17 for issuing a driving command such as a rotation direction, a rotation speed and a stop position of the arm driving shaft 11 to the driving device 10 is arranged in the door pocket 1.

Next, a safety device which is a main part of the present invention will be described. FIG. 3 is a longitudinal sectional front view of an upper part of the home door 4, and FIG. 5 is a cross-sectional plan view of the upper part. A door stop 21 is attached to the opening and closing end of the home door 4.
The front end of the rod 22 is fixed to the inside front part of the door stop part 21, and the rod 22 penetrates the front vertical beam 23 and the rear vertical beam 24 of the door pocket 1 in the front-rear direction, and A retaining pin 25 is provided on the rear vertical beam 24. The door stop part 21 has a gate-shaped cross section and a rigid column-shaped door contact tip part 21.
a and a connecting piece 21b made of flexible rubber or synthetic resin cloth. On the bush 26 attached to the door contact tip 21a,
The rod 22 is engaged, and the front end portion 21a of the door contact projects forward by a spring 28 interposed between the bush 26 and the bush 27 attached to the front vertical beam 23. The engagement between the bush 26 and the rod 22 allows the bush 26 to tilt and rotate to some extent in the vertical direction with respect to the rod 22. Accordingly, even when foreign matter collides with, for example, the upper portion of the door stop portion 21 and the vicinity of the upper portion moves rearward, the lower portion of the door stop portion 21 does not move rearward and the door stop portion 21 is inclined in the front-rear direction. The rod 22 can be moved backward in a predetermined manner.

When there is no collision of foreign matter,
a is at the overhang position as shown in FIG. 1, FIG. 3, and FIG.
When the door stop part 21 is pushed backward by the passenger's body or portable goods, as shown in a front view in which the door pocket 1 is cut off in FIG. 2 and a longitudinal section front view of an upper main part in FIG. For example, the door contact tip 21a is swollen outward and is pushed rearward. At this time, since the rod 22 is also pushed rearward, this pushing movement of the rod 22 is detected and notified to the control unit 17, and during the door closing operation, the control unit 17 sends the driving device 1
It is logically configured to instruct the door opening drive to 0 for a predetermined time. For this reason, the light detector 29 is attached to the rear part in the door pocket 1 and the reflector 30 is attached to the rear vertical beam 24, and light emitted forward from a light emitting part (not shown) of the light detector 29 is The light detector 2 is reflected by the reflector 30
The light is received by a light receiving unit 9 (not shown). Then, when the rod 22 is pushed rearward as described above, the projection of the light detector 29 to the reflector 30 and the reflected light from the reflector 30 are blocked by the pushing of the rod 22. A light-shielding mechanism 31 described below, which acts as described above, is provided.

While the door closing drive command is being output, the control unit 17 continuously issues the door closing drive command to the drive unit 10 when the light receiving unit of the photodetector 29 receives a predetermined light reception. When the predetermined light reception stops, the door closing drive command is temporarily interrupted, a door opening command is issued to the drive device 10 for a predetermined time, and after this predetermined time has elapsed, the control logic is outputted so as to output the door closing drive command again. It is configured.

Next, a specific configuration example of the light shielding mechanism 31 will be described. In the illustrated example, as shown in FIGS. 1 and 2, two rods 22 are provided at the upper and lower positions, and a foreign matter collides with, for example, the upper part of the door stop part 21. The rear part of the lower part of 21 is hardly moved backward,
Even when 1 is inclined, the upper rod 22 can be moved backward.

An upper hinge 32H, a middle hinge 33, and a lower hinge 32L are attached to the rear end of the home door 4 as shown in FIG. 1, and the respective rotating pieces 32Ha, 33a, 32L are provided.
“a” is configured to be rotatable up and down. The upper plate 34H is provided on the upper surface of the rotating piece 32Ha of the upper hinge 32H, the middle plate 35 is provided on the lower surface of the rotating piece 33a of the middle hinge 33, and the lower plate 34L is provided on the upper surface of the rotating piece 32La of the lower hinge 32L.
Are fixed respectively. The upper connecting rod 36H is
A nut 37H whose lower surface is always in contact with the upper surface of the upper plate 34H is screwed into the external thread of the upper connecting rod 36H by gently vertically penetrating the upper plate 34H and the middle plate 35 in the vertical direction. Immediately below the middle plate 35, the upper connecting rod 3
The nut 38H is screwed into the 6H male thread. Upper passive plate 39H always in contact with the rear end of upper rod 22
Is attached to the lower surface of the rotating piece 32Ha of the upper hinge 32H, and the light shielding plate 40 is attached to the upper surface of the rotating piece 33a of the middle hinge 33.
Is installed. In this manner, the upper hinge 32H, the middle hinge 33, the upper plate 34H, the middle plate 35, the upper connecting rod 36H, the upper passive plate 39H, and the light shielding plate 40 constitute the upper light shielding mechanism 31.

The lower connecting rod 36L is gently vertically penetrated through the lower plate 34L and the middle plate 35 in the vertical direction.
The nut 38L is screwed in, and the nut 37L, whose lower surface is always in contact with the upper surface of the lower plate 34L, is screwed into the external thread of the lower connecting rod 36L. Lower rod 22
The lower passive plate 39L, which is always in contact with the rear end of the lower hinge 32L, is attached to the lower surface of the rotating piece 32La of the lower hinge 32L. Thus, the lower hinge 32L, the middle hinge 33, the lower plate 34
L, middle plate 35, lower connecting rod 36L, lower passive plate 3
9L and the light shielding plate 40 constitute the lower light shielding mechanism 31. The inside of the door pocket 1 is optically sealed so that light does not enter from the outside.

Next, the operation of the safety device will be described. E
When there is no object that collides with the door stop 21 of the door 4, the door stop 21 is at the overhang position by the spring 28 as shown in FIGS. The rod 22 is not pushed rearward, and the light shielding plate 40 is out of the optical path of the light emitted from the light detector 29 and the light reflected from the reflector 30. is there. When a predetermined light is received by the light receiving unit during the door closing operation, the control unit 17 does not issue a door opening driving command, and the door closing driving command is continued as it is, and the driving device 1
0 closes the home door 4 as predetermined.

If a foreign object collides with the door stop 21 of the home door 4 during the door closing operation, the following operation is performed. When foreign matter collides with the upper part of the door stop 21 of the home door 4, the upper part of the door stop 21 is pushed rearward as shown in FIGS. (The amount of rearward pressing of the lower part of the door stop 21 at this time is not shown, but is small.) When the upper rod 22 is pressed rearward by the spring 28, the upper passive plate 39H Pushed by this rod 22 (from the position shown in FIGS. 1 and 3), the upper hinge 3
The 2H rotating piece 32Ha and the upper plate 34H are connected to the upper passive plate 3H.
Turn clockwise with 9H (from the position in FIGS. 1 and 3). The upper connecting rod 36H is pulled upward by the nut 37H by the clockwise rotation of the upper plate 34H, and the nut 38H also moves upward with the upward movement of the upper connecting rod 36H. Nut 3
8H, the middle plate 35, the middle hinge 3
3, the rotating piece 33a and the light shielding plate 40 are integrally formed (see FIGS. 1 and 3).
Clockwise) The lower connecting rod 36L gently inserted into the middle plate 35 does not move upward despite the clockwise rotation of the middle plate 35.

When a foreign object collides with the lower portion of the door stop 21 of the home door 4, although not shown, the lower rod 22 is pushed rearward by pushing the door stop 21 rearward.
The lower passive plate 39L is pushed by the lower rod 22 to turn clockwise (from the position in FIG. 1), and the turning piece 32La of the lower hinge 32L and the lower plate 34L both clockwise (from the position in FIG. 1). . Due to this clockwise rotation of the lower plate 34L, the nut 3
At 7L, the lower connecting rod 36L is pulled upward, and the nut 38L connected to the lower connecting rod 36L also moves upward. Pushed by the upward movement of the nut 38L, the middle plate 35, the rotating piece 33a of the middle hinge 33, and the light shielding plate 40 integrally turn clockwise (from the position in FIG. 1). The upper connecting rod 36H gently inserted into the middle plate 35 does not move upward despite the clockwise rotation of the middle plate 35.

As described above, when the light shielding plate 40 rotates clockwise,
Since the light shielding plate 40 enters the optical path of the light emitted from the light detector 29 and the light reflected from the reflector 30, the light projection and the reflected light from the reflector 30 are blocked by the light shielding plate 40. Light detector 2
Predetermined light reception to the light receiving unit 9 is stopped, and the control unit 17 interrupts the closing command until then and issues a door opening command to the driving device 10 for a short predetermined time. As a result, the home door 4 is opened, and an accident that the home door 4 pinches a foreign substance can be quickly avoided. After a short period of time elapses after the command to open the door by the above operation of the light detector 29, the command to open the door is canceled by the controller 17 and returns to the command to close the door. Closed on the street.

Although not shown, the upper plate 34H or the lower plate 3 is not provided as the light shielding mechanism 31 although the middle plate 35 is provided.
A structure in which the light shielding plate 40 is fixed to 4L may be adopted. The light-blocking mechanism 31 is not limited to the illustrated example. In the illustrated example, two rods 22 are provided in the upper and lower parts, but as one rod 22, the door stop 21 is not inclined in the front-rear direction even when a foreign object collides with the upper or lower part of the door stop 21. , As a structure with a suitable guide not shown,
Thus, a configuration in which only one light shielding mechanism 31 is used may be employed.

[0022]

As described above, according to the present invention, the safety device for preventing foreign object from being caught is provided by the photodetector 29 and the control unit 17, which are members requiring electric wiring, and the members not requiring electric wiring. Rod 22, reflector 30, light blocking mechanism 3
1, the light detector 29 and the control unit 17, which are members requiring electric wiring, are provided on the side of the door pocket 1, which is a stationary member, and the rod 22, the reflector 30, and the light shielding mechanism 31 are movable. It is provided on the home door 4 which is a member. As a result, the electric wiring can be provided on the side of the door pocket 1, and this electric wiring remains stationary irrespective of the opening / closing operation of the door 4, and the electric wiring of the related art in which the electric wiring moves with the opening / closing operation of the door 4. Such troubles have been eliminated and the safety device has become more compact.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a state in which a foreign object does not collide in an embodiment of the safety device of the present invention.

FIG. 2 is a partially cutaway front view showing a collision state of a foreign object in the embodiment of FIG. 1;

FIG. 3 is an upper longitudinal sectional front view of the safety device in FIG. 1;

FIG. 4 is an upper longitudinal sectional front view of the safety device shown in FIG. 2;

FIG. 5 is a cross-sectional plan view of a main part of the safety device in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door pocket 4 Home door 10 Drive 17 Control part 21 Door contact part 22 Rod 29 Photodetector 30 Reflector 31 Light shielding mechanism

Claims (1)

[Claims] 1. A plurality of door pockets 1 arranged at a distance from each other form a passage for getting on and off the train, and a home door 4 projects substantially horizontally straight from the door pocket 1 to close the passage for getting on and off. In the home door device for a platform, in which the home door 4 is housed in the door pocket 1 to open the passage for getting on and off, the foreign body collides with the door stop 21 of the home door 4 and receives a predetermined force to receive the home door. A rod 22 provided on the home door 4 so as to be pushed to the rear; a reflector 30 provided on the home door 4;
A light detector 29 provided on the door pocket 1 for receiving reflected light from the door, and a light shielding mechanism 31 provided on the home door 4 so as to intercept the light reception in conjunction with the pushing of the rod 22.
The control unit 17 provided on the side of the door pocket 1 so as to instruct the door opening / closing drive device 10 to open the door for a predetermined time during the door closing drive command by the operation of the light detector 29 at the time of the light blocking. A safety device for a home door, comprising: