JP2000326847A - Door closing device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety when a door is compulsorily opened by performing a control sequence interrupting door closing force weakening and making normal door closing force when a passenger compulsorily opens the door during a door closing force weakening operation and returning the door closing force weakening operation after the door is closed. SOLUTION: When doors 1, 1 are closed and a door closing switch 3 is switched, a solenoid valve 6 for weakening operation is switched by a control device 8 into which a sequence of a weakening operation is incorporated and the solenoid valve 6 is held for set time. As a result, door closing force corresponding to a lowered part of pressure is reduced to 'weakening' and door closing force becomes weak for the set time. At this time, when the doors 1, 1 are compulsorily opened, the door closing switch 3 is switched and thereby the solenoid valve 6 for weakening operation is switched by the sequence of the control device 8 performing a weakening control, air of normal pressure flows into a right side of a door closing machine and 'normal' door closing force is made. When the doors 1, 1 are closed and the door closing switch 3 is switched, door closing force is weakened again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closing device for a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, when a door switch is switched to close an open door, a solenoid valve for opening / closing operation is switched, and air flows into a left side of a cylinder of a door closing machine, and air on a right side is blown. It is discharged through the solenoid valve and the door closes. When the door closes and the door closing switch is switched, the controller incorporating the sequence of weakening operation switches the solenoid valve for weakening operation, the solenoid valve is held for the set time, and from the solenoid valve for weakening operation The air on the left side of the door closing machine is exhausted to the set pressure of the pressure reducing valve. For this reason, the door closing force corresponding to the pressure drop is reduced, and the door closing force decreases during the set time.

As described above, the reason why the door closing force is weakened for a certain time after the door is closed and the door closing switch is switched is that even when a thin object such as a fingertip or clothing is caught, the door tip rubber is deformed. Because the door is closed and the door is closed, and the circuit is determined to be closed. Therefore, in this way, even when an object that causes the door closing switch to be switched is sandwiched, the customer can easily open the door and take the sandwiched object within the set time. I have to.

[0004]

However, in the conventional door-closing device, when the passenger forcibly opens the door to remove the trapped object, the door-closing force is weakened. Even after removal, the door closing force does not become strong,
It is possible to open the door more than necessary within the weak setting time T1 (FIG. 3 described later) and board the vehicle. At this time, when the weak setting time expires, the door closing force increases and the door is suddenly closed, which is dangerous. Was. Further, since the door can be easily opened within the weakly set time, there has been a problem that it is not possible to prevent the door once closed from being intentionally opened and trying to enter the vehicle. The present invention has been made in view of the above points, and an object of the present invention is to solve these problems and to provide a safer railway vehicle door closing device.

[0005]

[Means for Solving the Problems] That is, means for achieving the object are as follows: 2. The door closing machine according to claim 1, wherein the door is opened and closed by pneumatic driving, a conductor switch that opens and closes the door according to a command from a conductor, an opening / closing operation electromagnetic valve that controls air transmitted to the door closing machine, and a door closing force is reduced. Solenoid valve, a pressure reducing valve that engages with the door closing force weakening solenoid valve, a door closing switch that operates when the door is closed, and controls the opening / closing operation solenoid valve and the door closing force weakening solenoid valve. It consists of a controller, and when the door is closed to start the train, even if thin things such as fingertips and clothing are caught, it is absorbed by the deformation of the door rubber attached to the closed side of the door, If the passenger forcibly opens the door during the door closing operation to determine that the door is completely closed and the train does not start, the door closing operation is interrupted. Normal door closing force, and after the door is closed, the door closing force is weakened again It is a vehicle door closing device, characterized in that it comprises a control unit having a back control sequence.

[0006] 2. 3. The control device according to claim 2, wherein the controller has a control sequence circuit, and the control sequence circuit receives a signal from the conductor switch and closes the air via the solenoid valve for opening / closing operation and the solenoid valve for weakening the door closing force. The air is supplied to the door closing side of the machine and the air of the door opening side of the door closing machine is discharged from the solenoid valve for opening / closing operation. When the door is closed, the door closing switch is activated to receive the signal, and the received signal is received. The solenoid valve for weakening the door-closing force is urged to stop the supply of air to the door-closing side of the door-closing machine, and at the same time, air is released from the pressure-reducing valve set to a predetermined pressure to the atmosphere, and The pressure in the door closing side is reduced, and at the same time, a predetermined door closing force weakening operation continuation time is maintained. After the door closing force weakening operation continuation time has elapsed, the door closing force weakening solenoid valve is deactivated. Then, air is supplied into the door closed side, the door is closed and the vehicle is departed, The closing force weakening the operation duration, for example, when a fingertip is caught door, can open the door by hand for door closing machine door closing side is under reduced pressure,
When this operation is performed and the door is opened to the extent that the fingertip can be pulled out, the door closing switch that has been operating so far is opened, and the solenoid valve for weakening the door closing force is deactivated,
Air is supplied to the door closing side of the door closing machine, the door is closed again and the door closing switch is operated, and the inside of the door closing side is depressurized, and such opening and closing of the door is performed within the door closing force weakening operation continuation time. The vehicle door closing device according to claim 1, wherein the device can be repeated if it is present.

[0007] The effect of this configuration is that when the passenger sandwiches an object that cannot be detected by the door closing switch and tries to forcibly open the door to take it, the door is easily opened because the operation is weakening at that time. However, since the door closing switch is immediately turned on, the door closing force returns to the normal operation, and the door is pulled back by slightly opening the door. Also, if you try to open the door forcibly after the door is closed, the door opens slightly at the first moment, but immediately returns to the normal door closing force, so the door is pulled back and cannot be entered.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0008]

1 is an explanatory view for explaining a vehicle door closing device according to the present invention, FIG. 2 is an operating characteristic diagram showing one embodiment of a controller according to the present invention in FIG. 1, and FIG. FIG. 3 is a conventional operation characteristic diagram in comparison with FIG. 2. In FIG. 1, an air cylinder 2 as a door closing machine that opens and closes doors 1 and 1 by pneumatic drive
A conductor switch 4 for opening and closing the doors 1 and 1 according to the command of the conductor, an electromagnetic valve 5 for opening / closing operation and an electromagnetic valve 6 for weakening the door closing force for controlling air transmitted to the door closing machine, and a weakening door closing force. A pressure reducing valve 7 that engages with the solenoid valve 6, a door closing switch 3 that operates when the doors 1 and 1 are closed, a controller 8 that controls the opening and closing operation solenoid valve 5 and the door closing force weakening solenoid valve 6, Consists of Reference numerals 9 and 9 denote door rubber.

Hereinafter, a description will be given based on FIG. 2 with reference to FIG. When the doors 1, 1 in the open state are closed, when the conductor switch 4 is switched, the solenoid valve 5 for opening / closing operation is switched, and air flows into the left side of the cylinder 2 of the door closing machine, and the right side of the cylinder 2 Is discharged through the solenoid valve 5, and the doors 1, 1 are closed. Doors 1 and 1 are closed and door close switch 3
Is switched by the controller 8 incorporating the sequence of the weakening operation, the solenoid valve 6 for the weakening operation is switched, and the solenoid valve 6 is held for the set time T1.
Thus, the air on the left side of the door closing machine is discharged to the set pressure of the pressure reducing valve 7.

[0010] Therefore, the door closing force corresponding to the pressure drop is reduced to "weaker", and the door closing force becomes weaker for the set time. At this time, when the doors 1 and 1 are forcibly opened, the door closing switch 3
Is switched, and the solenoid valve 6 for weakening operation is switched by the sequence of the controller 8 that performs weakening control, so that air of normal pressure flows into the right side of the door closing machine and the "normal" door closing force is changed. Become. For this reason, the door 1,1 is closed again only if the passenger opens the door 1,1 slightly. Since the object sandwiched by the passenger is a small object or a thin object such that the door closing switch 3 is switched, it is sufficient to open the door slightly.

When the doors 1 and 1 are closed and the door closing switch 3 is switched, the weakening solenoid valve 6 is switched again, and the door closing force is weakened as described above. Therefore, even if the sandwiched object cannot be completely removed, it can be removed by pulling out or forcibly opening the doors 1 and 1. This operation can be repeated within the set time T1. In addition, if the passenger tries to open the doors 1, 1 once closed by force, the doors can be easily opened at first because the door closing force is weak, but as described above, people can enter the vehicle. It cannot be opened to the extent that it can. That is, since the door returns to the normal closing force with a slight opening, it is impossible to open the doors 1 and 1 and forcibly enter the vehicle. However, according to the conventional characteristics shown in FIG. 3, it can be seen that the door closing force does not return to the “normal” door closing force when the object that is manually opened and caught is pulled out, and the door closing force is “weaker”. For this reason, the door can be forcibly opened larger than necessary, which is dangerous, and a person can forcibly enter the vehicle.

[0012]

As described above, according to the present invention, the following effects can be obtained, and a safer vehicle door closing device can be provided. A passenger trying to remove an object caught in the door, after removing the object, opens the door more than necessary, weakens the door, and does not become injured by the door that suddenly moves after the set time expires. It is possible to prevent the door once closed from being intentionally opened and trying to enter the vehicle.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a vehicle door closing device of the present invention.

FIG. 2 is an operation characteristic diagram showing one embodiment of the controller of the present invention in FIG. 1;

FIG. 3 is a diagram showing a conventional operation characteristic in comparison with FIG. 2;

[Explanation of symbols]

 Reference Signs List 1 door 2 door closing machine (pneumatic cylinder) 3 door closing switch 4 conductor switch 5 solenoid valve for opening and closing operation 6 solenoid valve for weak operation 7 pressure reducing valve 8 controller 9 door rubber

Claims (2)

[Claims] 1. A door closing machine that opens and closes a door by pneumatic driving, a conductor switch that opens and closes a door according to a command from a conductor, an electromagnetic valve for opening and closing operation that controls air transmitted to the door closing machine, and a weakening of door closing force. Solenoid valve, a pressure reducing valve that engages with the door closing force weakening solenoid valve, a door closing switch that operates when the door is closed, and controls the opening / closing operation solenoid valve and the door closing force weakening solenoid valve. It consists of a controller, and when the door is closed to start the train, even if thin things such as fingertips or clothes are caught, it is absorbed by the deformation of the door rubber attached to the closed side of the door, If the passenger forcibly opens the door during the door closing operation to determine that the door is completely closed and the train does not start, the door closing operation is interrupted. To normal door closing force,
A door closing device for a vehicle, comprising a controller having a control sequence that returns to a door closing force weakening operation again after the door is closed. 2. The apparatus according to claim 1, wherein the controller has a control sequence circuit.
The control sequence circuit receives the signal of the conductor switch and supplies air to the door-closing side of the door-closing machine through the solenoid valve for opening and closing operation and the solenoid valve for weakening the door closing force. When the door is closed, the door-closing switch is activated to receive the signal when the door is closed, and the received signal urges the solenoid valve for weakening the door-closing force, thereby closing the door. At the same time as the supply of air to the door closing side is stopped, air is released from the pressure reducing valve set to a predetermined pressure to the atmosphere, and the pressure inside the door closing side of the door closing machine is reduced, and The door closing force weakening operation continuation time is held, and after the door closing force weakening operation continuation time has elapsed, the solenoid valve for weakening the door closing force is deenergized, air is supplied into the door closing side, and the door is closed. When the vehicle is in the departure state and the fingertip is caught in the door In this case, since the door closing side of the door closing machine is in a depressurized state, the door can be opened by hand. The closing switch is opened and the solenoid valve for weakening the door closing force is deenergized,
Air is supplied to the door-closing side of the door-closing machine, the door closes again, the door-closing switch is activated, and the inside of the door-closing side is depressurized. 2. The vehicle door closing device according to claim 1, wherein the device can be repeated if it is present.