JP3556994B2 - Door opening and closing control device - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing control device in which a door body moves linearly to open and close, for example, a doorway of a person.
[0002]
[Prior art]
In order to prevent passengers passing through the platform inside the station premises or waiting near the platform from falling off the platform and preventing tentacle accidents, a platform door is provided with a home door. In recent years, it has been put to practical use.
In this home door, a barrier plate is provided over the entire length of the platform near the railroad track, and an entrance facing the vehicle door at a predetermined stop position of the train is formed in the barrier plate, and a platform side door is provided at the entrance. The platform side door is closed except when getting on and off the train. When getting on and off, the platform side door is opened, for example, in conjunction with the opening and closing operation of the vehicle door, and passengers get on and off the train from the entrance. It is intended to be.
In such a home door, the platform side door is closed before the vehicle door closes before departure of the train, but the passenger's bag, handbag, part of the body (arms), etc. try to pass through the entrance just before departure. Is often caught between the closed end of the door body of the platform side door that is being closed and the door rest, which is the end of the doorway.
In order to minimize damage to foreign objects such as bags, handbags and arms when the doors are pinched, the home door has no power in the closing direction acting on the door body at the door closing position.
Therefore, when the door body is sandwiched, the door body can be pushed back and moved in the opening direction by overcoming the moving frictional force caused by the weight of the door body.
[0003]
[Problems to be solved by the invention]
If the door body is pushed back by human power as described above, the door body will remain open thereafter and will not function as a home door. If power is always applied to the door body in the closing direction at the door closing position as in the case of a vehicle door, damage to the foreign matter sandwiched therebetween is unavoidable and dangerous.
The present invention has been proposed in view of such a problem in the conventional door opening / closing control device, and when it is sandwiched, can overcome the moving frictional force due to its own weight of the door body and push back and move the door body in the opening direction, Moreover, it is another object of the present invention to provide a door opening / closing control device designed to automatically close the door body when the trapped foreign matter is removed.
[0004]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention relates to a door in which a door body 3 is linearly opened and closed by a linear motor 9 to open and close the doorway 2, and the door body 3 is moved from a position immediately before the doorway 2 is closed to a closed position. An opening / closing controller 13 for controlling the operation of the linear motor 9 is provided to the linear motor 9 in the door closing direction. When energized, the energization is stopped by the above-mentioned closed state detection operation of the closed state detector 16, and the linear motor 9 is energized in the door opening direction by operating the operation key 14, and the linear motor 9 is energized. When the above-mentioned closed state detection operation by the closed state detector 16 is stopped in a state where the above-mentioned energization in the door opening direction is not performed, the linear motor 9 is energized in the door closing direction. It is.
[0005]
In the door opening and closing control device according to the first aspect of the present invention, the energization in the door closing direction performed when the closed state detection operation by the closed state detector 16 is stopped in a state in which the energization in the door opening direction is not performed. The opening and closing control unit 13 is characterized in that the strength is smaller than the strength of the power supply in the door closing direction before the closing state detection operation by the closing state detector 16.
[0006]
Further, the start of energization in the door closing direction, which is performed when the closed state detection operation of the closed state detector 16 is stopped in a state in which power is not supplied to the door opening direction, is not used. The opening and closing control unit 13 is characterized in that the opening and closing control unit 13 is configured to perform the operation with a predetermined time delay from the time of the occurrence.
[0007]
[Action]
When the linear motor 9 is energized in the door closing direction and the door body 3 is closing and moving, the closed state detector 16 has the closing end 3a of the door body 3 at a position immediately before the entrance 2 is closed. Is detected (closed state detection) to stop the energization of the linear motor 9, but the inertia causes the door body 3 to continue to move slowly in the closing direction, and the door body 3 is closed when the entrance 2 is completely closed. Stop.
When a foreign object 21 such as a bag, a handbag, or an arm is caught while the closed state detector 16 is performing the above-described closed state detection operation and the door body 3 continues to move slowly in the closing direction, the linear motor 9 is transferred to the linear motor 9. If power is stopped and the door body 3 is pushed back in the opening direction by human power, the door body 3 overcomes the moving frictional force due to its own weight and moves to the opening side, so that these foreign substances 21 sandwiched can be removed.
When the push-back amount of the door body 3 is slightly increased, the closing state detection operation by the closing state detector 16 is stopped, and the linear motor 9 is energized in the closing direction of the door body 3 by a command from the opening / closing control unit 13 so that the door body is closed. The door 3 moves in a direction to close the doorway 2, and the doorway 2 is automatically closed by the door body 3 when a closed state detection operation is performed by the closed state detector 16.
[0008]
When the push-back amount of the door body 3 is slightly increased and the closed state detection operation by the closed state detector 16 is stopped, the required movement amount of the door body 3 until the entrance 2 is closed is smaller than that when the door is fully opened. At this time, the strength of the power supply in the door closing direction is sufficiently smaller than the strength of the power supply in the door closing direction before the closed state detection operation by the closed state detector 16 as in the second aspect of the invention. Therefore, the strength of energization to the linear motor 9 in the door closing direction when the door body 3 is slightly pushed back to remove the trapped foreign matter 21 is the normal door closing direction without such foreign matter 21 removal operation. Is smaller than the strength of the power supply to the door body, whereby the closing direction movement of the door body 3 after pushing back is gradual, and the door body 3 receives almost no impact when the door body is closed. .
[0009]
The energization in the door closing direction, which is performed when the closed state detection operation of the closed state detector 16 is stopped in a state where the power is not supplied to the door opening direction, is performed when the closed state detection operation is stopped. Since the operation is performed after a predetermined time, the operation for removing the foreign matter 21 sandwiched between the linear motor 9 and the door can be easily performed without any resistance without receiving the door closing force from the linear motor 9.
[0010]
【Example】
Hereinafter, an embodiment in which the door opening / closing control device of the present invention is applied to a home door installed on a platform in a station premises will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a door opening / closing control device as one embodiment, FIG. 2 is an explanatory plan view showing a home door 1, and FIG. 3 is an explanatory front view of FIG.
A home door 1 is provided on a platform at a predetermined stop position of a train (not shown). The home door 1 is formed with an entrance 2 facing the vehicle door, and includes a door body 3 that moves substantially horizontally to open or close the entrance 2 and a door pocket 4 thereof. The fixed fence 5 is connected to the door pocket 4, and the doorway 2 is formed between the door pocket 5 a of the fixed fence 5 and the door pocket 4.
A traveling rail 6 is laid in a substantially horizontal straight line from the inside of the door pocket 4 to the end of the fixed fence 5, and a plurality of traveling rollers 7, 7 attached to a lower portion of the door body 3 are traveling rails. The door body 3 can move substantially horizontally while riding on the door 6.
In order to restrict the swing of the door body 3 in a direction substantially perpendicular to the horizontal movement direction, a plurality of steady rest rollers 8, 8,... It is provided in the door pocket 4.
[0011]
The opening and closing movement of the door body 3 is performed by a linear motor 9 disposed on the side of the opening and closing movement locus.
The illustrated linear motor 9 has a box-shaped stator 10 fixed to the door pocket 4, and a slide rail (not shown) in the box shape of the stator 10 in the longitudinal direction (the opening and closing movement direction of the door body 3). And a mover 11 that is guided and moved.
On the left and right inner walls of the stator 10, a large number of sets of permanent magnets N and S (not shown) are alternately arranged in the longitudinal direction of the stator 10. The permanent magnets N and S facing each other (in a direction perpendicular to the opening and closing movement direction) are set to have opposite polarities.
A coil is wound around the core of the mover 11 located between the permanent magnets N and S opposed to the left and right sides so as to approach the permanent magnets N and S opposed to the left and right.
The lower part 11a of the mover 11 of the linear motor 9 is connected to the protruding end of the door body 3 by a connecting body 12 in the front-rear direction (opening and closing movement direction).
The door pocket 4 is provided with an opening / closing controller 13 for controlling the linear motor 9, and the direction of the current flowing through the coil is alternately changed in accordance with the polarities of the permanent magnets N and S facing in the left-right direction. As described above, the opening / closing control unit 13 controls.
The opening / closing control unit 13 is formed by, for example, a microcomputer.
[0012]
By the control operation of the opening / closing control unit 13, a force is continuously applied to the coil in a direction in which the door body 3 moves toward the door contact 5a or in a direction away from the door contact 5a. 3 moves open or closes.
Further, the moving speed of the mover 11 is adjusted by adjusting the cycle of changing the direction of the current flowing through the coil by the opening / closing control unit 13, and the intensity of the current flowing through the coil is adjusted by adjusting the intensity of the current flowing through the coil. Is adjusted.
The start of energization of the linear motor 9 is controlled by the open / close control unit 13 based on the operation of the operation key 14.
That is, the power is normally cut off at the position where the door body 3 closes the doorway 2, and when the operation key 14 is operated to open the door, the opening / closing control unit 13 causes the coil 11 to move the mover 11 to the doorway 2. The energization is started in the direction to move in the opening direction.
When the door body 3 opens the entrance 2, the power supply is cut off. When the operation key 14 is operated to close the door when the train starts, the opening / closing controller 13 causes the movable element 11 to enter and exit the coil. (2) Start energization in the direction to move in the closing direction.
[0013]
The power supply to the linear motor 9 is stopped by the open / close control unit 13 based on a signal from the open state detector 15 or the closed state detector 16 for detecting whether the door body 3 is open or closed.
The illustrated open state detector 15 and closed state detector 16 are formed by proximity switches, and a switch magnet 17a is mounted on the mover 11 so that the position of the door body 3 in the moving direction can be adjusted. Each of the contact portions 17b of the open state detector 15 and the closed state detector 16 that perform closing operation by approach is arranged and attached to the stator 10 as shown in FIGS.
The contact portion 17b of the open state detector 15 is closed by the switch magnet 17a slightly before the position where the door body 3 completely opens the doorway 2, and the contact portion 17b of the closed state detector 16 is such that the door body 3 has the doorway. The respective mounting positions of the contact portion 17b of the open state detector 15 and the contact portion 17b of the closed state detector 16 are set so that the switching operation is performed by the switch magnet 17a slightly before the position where the 2 is completely closed. .
That is, the closed side end 3a of the door body 3 is farthest from the door rest 5a to completely open the entrance 2, and the open state detector 15 is located slightly before the open position where the rear end of the door body 3 collides with the stopper 18. Is operated to detect the open state, or the closed state detector 16 is operated to detect the closed state slightly before the closed position where the closed end 3a of the door body 3 contacts the door rest 5a, whereby the linear motor 9 is operated. The power supply to is stopped.
After the power supply is stopped, the door body 3 continues to move slowly due to the inertia of the door body 3. When the door body is opened, the impact caused by the collision of the rear end of the door body 3 with the stopper 18 is alleviated. The impact accompanying the collision with the door rest 5a is reduced.
[0014]
In the embodiment, when the operation key 14 is not operated in the door opening direction (the energization of the near motor 9 in the door opening direction is not performed), the closed state detecting operation by the closed state detector 16 disappears. The opening / closing control unit 13 is configured to output a command to energize the linear motor 9 in the door closing direction with a delay of a predetermined time from when the closed state detection operation is stopped.
The energization start delay time is configured to be adjustable, and the setting of the delay timer provided in the opening / closing control unit 13 in consideration of the time required for removal when foreign matter is caught as described below. It adjusts the value. If the inertia of the door body 3 is large, there is a considerable time delay from the start of energization to the linear motor 9 until the door body 3 starts to close and move. In the case where it can be sufficiently secured, the power supply start delay time is set to zero.
[0015]
The intensity of energization in the door closing direction is set to be sufficiently smaller than the intensity of energization before the closing state detection operation of the closing state detector 16.
The setting of the current supply strength is performed by adjusting a cycle for changing the direction of the current flowing through the coil of the mover 11, or by adjusting the strength of the current flowing through the coil of the mover 11.
The moving speed of the mover 11 is adjusted by adjusting the cycle of changing the direction of the current flowing through the coil of the mover 11, and the intensity of the current flowing through the coil of the mover 11 is adjusted by adjusting the strength of the current flowing through the coil of the mover 11. The movement power is adjusted.
[0016]
The structure in which the position of the door body 3 in the moving direction of the switch magnet 17a to the mover 11 is adjustable so that the guide 19 illustrated in FIG. 7 made of a non-magnetic material that is long in the moving direction of the door body 3 is attached to the mover 11. The switch 19 is fixed to the guide 19 so as to be movable only in the direction of movement of the door body 3, and the adjusting screw 20 engaged with the switch magnet 17 a so as to be rotatable only around the axis is screwed into the guide 19. It is assumed that they have been combined.
By rotating the adjusting screw 20 about the axis, the position of the switch magnet 17a is adjusted in the moving direction of the door body 3 with respect to the movable element 11, whereby the position of the closed state detection operation by the closed state detector 16 can be adjusted. .
With this adjustment, the position of stopping the power supply to the linear motor 9 when the door is closed is adjusted, and the weight of the door body 3 and the corresponding variable value of the moving frictional force can be adjusted.
[0017]
The door opening / closing control device thus configured operates as follows.
When the train stops at the predetermined position and the vehicle door is opened, the operation key 14 is operated to open the door, and the door body 3 is pulled into the door pocket 4 as shown in FIGS. I have.
When the train departs, the vehicle door is closed, and when the operation key 14 is operated to the door closing side, the door body 3 starts to come out of the door pocket 4 and the entrance 2 is gradually closed, and as shown in FIG. The contact portion 17b of the closed state detector 16 is closed by the switch magnet 17a to detect the closed state shortly before the closed position where the portion 3a contacts the door rest 5a, and the closed state is detected by the switching magnet 17a. 9 is stopped, and thereafter the door body 3 keeps moving slowly toward the door rest 5a by inertia.
Then, as shown in FIG. 5, the door body 3 stops at the position where the closing end 3a abuts on the door support 5a and the entrance 2 is completely closed, so that the impact accompanying the collision of the door body 3 with the door support 5a is provided. Is alleviated.
[0018]
As shown in FIG. 6, the closing state detector 16 operates to detect the closing state as described above, the power supply to the linear motor 9 is stopped, and the door body 3 continues to move slightly in the closing direction. When a foreign body 21 such as a bag, a handbag or an arm is caught between the end 3a and the door rest 5a, if the door body 3 is pushed back in the door opening direction by human power, the door body 3 is reduced in the moving friction force due to its own weight. It can move over and remove the foreign material 21 sandwiched.
When the push-back amount of the door body 3 is large, the switch magnet 17a of the closed state detector 16 is separated from the contact portion 17b as shown in FIG. 6, so that the closed state detection operation by the closed state detector 16 is eliminated. Since a command to energize the linear motor 9 in the door closing direction is output after a predetermined time from the time when the closed state detection operation is stopped, the linear motor 9 is energized in the door body closing direction after the predetermined time. Then, the door body 3 starts to move in the direction to close the entrance 2.
As a result, the door closing force from the linear motor 9 is not received within this predetermined time, and the operation of removing the foreign matter 21 sandwiched therebetween can be easily performed without any hassle and without any resistance.
[0019]
Then, as shown in FIG. 4, a closing state detecting operation by the closing state detector 16 is performed slightly before the closing position where the closing side end 3 a of the door body 3 abuts on the door rest 5 a. Completely closed.
When the door body 3 is slightly pushed back in order to remove the trapped foreign matter 21 and the closed state detection operation by the closed state detector 16 is stopped, the required movement amount of the door body 3 until the entrance 2 is closed is smaller than when the door 2 is fully opened. The intensity of the power supply in the door closing direction at this time is determined by the power supply in the door closing direction before the closing state detection operation by the closing state detector 16 (when the foreign matter 21 is not pinched). Since the door body 3 is set sufficiently smaller than the strength, the door body 3 moves slowly in the closing direction after being pushed back, and there is almost no impact on the door cap 5a by the door body 3 when the entrance 2 is closed.
[0020]
In the above embodiment, the operation direction of the door body 3 is switched by operating the operation key 14 to the door opening side or the door closing side by using one operation key 14. The opening side operation key and the door closing side operation key may be separately provided.
The door opening / closing control device of the present invention is, of course, applied as a door opening / closing control device for a normal building or the like, but the door opening / closing control device is applied to a home door as in the above embodiment. Then, instead of starting the energization of the linear motor 9 by operating the operation key 14, the energization of the near motor 9 is started, for example, in conjunction with the opening / closing operation of the train door. The opening / closing control unit 13 may be configured.
That is, the doorway 2 is closed until the train arrives. For example, the opening / closing control unit 13 receives a signal to open the vehicle door, and starts energizing the linear motor 9 in the door opening direction. The opening / closing control section 13 receives this signal to start energizing the linear motor 9 in the door closing direction, so that the door opening / closing control can be completely automated.
[0021]
【The invention's effect】
As described above, the present invention has the following effects.
That is, according to the first aspect of the present invention, at the position immediately before the entrance is closed by the door closing operation, the closed state detecting operation is performed by the closed state detector, and the power supply to the linear motor is stopped. When the arm or the like is pinched, if the door body is slightly pushed back in the opening direction by human power, the door body moves by overcoming the moving frictional force due to its own weight, and these pinched foreign substances can be removed.
When the pushing back amount of the door body becomes slightly large, the closing state detection operation by the closing state detector is stopped, and the linear motor is energized in the direction of closing the door body by the command of the opening / closing control unit, and the door body closes the entrance. The doorway is closed by the door body when there is a closed state detection operation by the closed state detector.
As a result, even when the door body is slightly pushed back by human power to remove the trapped foreign matter, the door body is closed and moved, and the entrance is completely closed, so that a door opening / closing control device that operates properly can be provided.
[0022]
According to the invention of claim 2, the strength of the energization in the door closing direction performed when the closed state detection operation of the closed state detector is stopped in a state where the energization in the door opening direction is not performed is: Since the energization strength before the above-mentioned closed state detection operation by the closed state detector is set sufficiently small, the linear motor in the door closing direction when the door body is slightly pushed back to remove the foreign matter caught therein is removed. The strength of the power supply to the door is sufficiently smaller than the strength of the power supply to the normal door closing direction without such foreign matter removal operation, and the door body moves slowly in the closing direction after pushing back, and the doorway is closed. And a door opening / closing control device that operates quietly with little impact from the door body.
[0023]
According to the third aspect of the present invention, when the linear motor is not energized in the door opening direction and the closed state detecting operation of the closed state detector is stopped, the linear motor is closed in the door closing direction. Is started after a predetermined time from when the above-mentioned closed state detection operation is stopped, and within this predetermined time, the operation of removing the trapped foreign matter without receiving the door closing force from the linear motor. Can be provided easily without any resistance.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a door opening / closing control device as one embodiment of the present invention.
FIG. 2 is an explanatory plan view showing a home door to which the door opening / closing control device of the present invention is applied.
FIG. 3 is an explanatory front view of FIG. 2;
FIG. 4 is an explanatory plan view showing an operation of a closed state detector in the home door of FIG. 2;
FIG. 5 is an explanatory plan view showing the home door of FIG. 2 when the entrance is completely closed.
FIG. 6 is an explanatory plan view showing a state in which foreign matter is sandwiched in the home door of FIG. 2;
FIG. 7 is a plan view showing attachment of a switch magnet of the closed state detector used in the door opening / closing control device of the present invention.
[Explanation of symbols]
2 Doorway 3 Door body 3a Closed end 9 Linear motor 13 Open / close control unit 14 Operation key
16 Closed state detector 21 Foreign matter

Claims (3)

A door in which a door body is linearly opened and closed by a linear motor to open and close an entrance, and detects the presence of a closed end of the door body between a position immediately before the entrance is closed and a closed position. An opening / closing control unit having a closed state detector for controlling the operation of the linear motor is configured to stop the energization by the closed state detecting operation of the closed state detector when the linear motor is energized in the door closing direction. When the linear motor is energized in the door opening direction by operating the operation key, and the linear motor is not energized in the door opening direction, the closed state detecting operation by the closed state detector is performed. A door opening / closing control device wherein the linear motor is energized in the door closing direction when the door is closed. The strength of the energization in the door closing direction performed when the closed state detection operation of the closed state detector is stopped in a state where power is not supplied to the door opening direction is determined by the closed state by the closed state detector. 2. The door opening / closing control device according to claim 1, wherein the opening / closing control unit is configured to be sufficiently smaller than the strength of energization before the detection operation. The start of energization in the door closing direction, which is performed when the closed state detection operation of the closed state detector is stopped in a state where power is not supplied to the door opening direction, is performed from the time when the closed state detection operation is stopped. 3. The door opening and closing control device according to claim 1, wherein the opening and closing control unit is configured to perform the operation after a predetermined time delay.

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