JP7092515B2 - Automatic opening / closing door device for vehicles - Google Patents

Description

The present invention includes an air cylinder provided horizontally on one of the upper and lower sides of a vehicle entrance / exit, and a door connected to the piston rod of the air cylinder, and the piston rod is horizontal when air is supplied or exhausted to the inside of the air cylinder. The present invention relates to an automatic opening / closing door device for vehicles in which a door automatically opens / closes an entrance / exit when moving.

Conventionally, this type of automatic opening / closing door device for vehicles has an air pipe that can supply air from an air source inside the air cylinder and an air supply / exhaust switch that is installed in the air pipe to supply and exhaust air to the inside of the air cylinder. It has a valve. Such an automatic opening / closing door device for vehicles is required to improve safety when opening / closing the door, and foreign matter such as people or objects may be caught when the door is closed, or it may be placed in the door pocket when the door is opened. It is necessary to take measures against the attraction of foreign matter.

As a measure for this, for example, a door pinch detection device is known (see, for example, Patent Document 1). In this case, a door tip rubber having a cavity is provided in the door, a pressure detection tube made of a flexible material is built in the door end rubber cavity, and the pressure detection tube is inserted into a foreign object. The deformation when elastically deformed by being pressed by the external force of time is detected by a pressure sensor or the like, and the pinching of foreign matter is detected. Further, a door pocket retracting detection device is known (see, for example, Patent Document 2). This is a protective rubber provided at the edge of the opening of the door pocket, a detecting means provided at the opening of the door pocket to detect that the protective rubber is deformed inward of the door pocket, and a detection signal from the detecting means. The control unit is provided with a control means for controlling the opening and closing of the door based on the above, and when a detection signal is input to the control unit when a foreign substance is drawn into the door pocket, the control unit stops or reversely operates the door drive device.

However, since the door pinch detection device or the door pocket retracting detection device requires a door tip rubber or a protective rubber different from the rubber normally provided at the door end or the opening edge of the door pocket, consideration for installation in an existing vehicle is considered. Then, there is a problem that it involves a large-scale vehicle modification. In addition, since both the door end rubber and the protective rubber use rubber, there is a concern that the rubber itself will be deformed when an excessive load is applied, which may affect the detection of pinching or pulling in. be.

Japanese Unexamined Patent Publication No. 2012-76567 Jikkenhei 5-96373 Gazette

In view of the above points, the present invention can easily cope with installation in an existing vehicle, and can reliably detect the pinching or pulling of foreign matter and eliminate the state of the automatic opening / closing door device for vehicles. The challenge is to provide.

In order to solve the above problems, the present invention first includes an air cylinder provided horizontally on one of the upper and lower sides of the vehicle entrance / exit, and a left door connected to the piston rod of the air cylinder. A left / right double door type automatic opening / closing door device for vehicles that automatically opens / closes the entrance / exit on the left and right doors due to the horizontal movement of the piston rod when air is supplied / exhausted to the inside. A pressure sensor that detects the air pressure inside the air cylinder in the one equipped with an air pipe that can supply the air and an air supply / exhaust switching valve that is installed in the air pipe and supplies and exhausts air inside the air cylinder. , Supply based on the air pressure detected by the pressure sensor when foreign matter is caught during the closing operation of both the left and right doors, or when foreign matter is drawn into the door pocket where the door is stored during the opening operation. It is equipped with a control unit that switches the supply / exhaust direction of the exhaust switching valve and switches the opening / closing operation of both the left and right doors, and a fully closed detection means that detects the fully closed state of both the left and right doors, and is preset during the closing operation of both the left and right doors. When the first reference air pressure is detected by the pressure sensor, the control unit opens both the left and right doors to prevent foreign matter from being caught when the fully closed state is not detected within a predetermined time by the fully closed detection means. The fully closed detection means is a fully closed detection switch that has a switch rod that can be pushed inside and protrudes to the right, and is turned on when this switch rod is pushed to the left. The push-in rod for pushing the switch rod of the door is fixed to the right connector connected to the upper end of the right door, protrudes to the left in the horizontal direction, and faces the switch rod of the fully closed detection switch .

According to this, the fluctuation of the air pressure inside the air cylinder when opening and closing both the left and right doors is used to detect the pinching or drawing of foreign matter, and the opening and closing operation of both the left and right doors is controlled so as to eliminate the state. Therefore, it is not necessary to provide a member to be detected different from the usual one on both the left and right doors and the door pocket, and it is possible to easily support the installation in an existing vehicle. In addition, it is possible to reliably detect the pinching of foreign matter and eliminate the state. Furthermore, when foreign matter is caught, both the left and right doors open automatically, so the caught foreign matter can be safely removed. Since not only the detection of the first air reference pressure but also the detection of full closure of both the left and right doors is used, the detection of full closure of both left and right doors is also used to prevent malfunctions in which both the left and right doors repeatedly open and close unstablely. can do.

In the present invention, the automatic opening / closing door device for vehicles further includes a fully open detecting means for detecting the fully opened state of both the left and right doors, and a second reference air pressure preset in advance during the opening operation of both the left and right doors is applied by a pressure sensor. When detected, the control unit closes both the left and right doors when the fully open state is not detected by the fully open detection means within a predetermined time to eliminate the pulling in of foreign matter, and the fully open detection means can be pushed inward and left. A fully open detection switch that has a switch rod that protrudes toward the right and turns on when this switch rod is pushed to the right. The push rod that pushes the switch rod of the fully open detection switch is connected to the right end of the right end. It is desirable that it is fixed to the left end of the right connecting rod extending in the horizontal direction, protrudes to the right in the horizontal direction, and faces the switch rod of the fully open detection switch . According to this, when foreign matter is drawn into the door pocket, both the left and right doors are automatically closed, so that the drawn foreign matter can be safely removed. Further, since not only the detection of the second reference air pressure but also the detection of the full opening of both the left and right doors is used, it is possible to prevent a malfunction in which both the left and right doors are unstable and repeatedly opened and closed.

Further, in order to solve the above problems, the present invention secondly includes an air cylinder provided horizontally on one of the upper and lower sides of the vehicle entrance / exit, and a left door connected to the piston rod of the air cylinder. A left / right double door type automatic opening / closing door device for vehicles in which the left and right doors automatically open / close the entrance / exit by the horizontal movement of the piston rod when air is supplied / exhausted to the inside of the cylinder. A pressure sensor that detects the air pressure inside the air cylinder in the one equipped with an air pipe that can supply air from the air and an air supply / exhaust switching valve that is connected to the air pipe and supplies and exhausts air inside the air cylinder. The air supply / exhaust direction of the air supply / exhaust switching valve is switched based on the air pressure detected by the pressure sensor when foreign matter is drawn into the door pocket where the doors are stored while the left and right doors are open. It is equipped with a control unit that switches the opening and closing operation of the door and a fully open detection means that detects the fully open state of both the left and right doors. When the fully open state is not detected by the fully open detection means within a predetermined time, the control unit closes both the left and right doors to eliminate the attraction of foreign matter, and the fully open detection means can be pushed inward and protrudes to the left . It is a fully open detection switch that has a switch rod and is turned on when this switch rod is pushed to the right . The push rod that pushes the switch rod of the fully open detection switch is connected to the right end of the right end in the horizontal direction. It is fixed to the left end of the right connecting rod extending to the right side, protrudes to the right side in the horizontal direction, and faces the switch rod of the fully open detection switch. According to this, it is possible to detect the attraction of foreign matter by utilizing the fluctuation of the air pressure inside the air cylinder when opening and closing both the left and right doors, and control the opening and closing operation of both the left and right doors so as to eliminate the state. Therefore, it is not necessary to provide a member to be detected that is different from the left and right doors and the door pocket, and it can be easily installed in an existing vehicle. In addition, it is possible to reliably detect the attraction of foreign matter and eliminate the state. Furthermore, when foreign matter is drawn into the door pocket, both the left and right doors are automatically closed, so the drawn foreign matter can be safely removed. Further, since not only the detection of the second reference air pressure but also the detection of the full opening of both the left and right doors is used, it is possible to prevent a malfunction in which both the left and right doors are unstable and repeatedly opened and closed.

FIG. 6 is a schematic cross-sectional view showing an embodiment of an automatic opening / closing door device for a vehicle of the present invention. The figure which showed the fluctuation waveform of the air pressure in a cylinder detected by the pressure sensor at the time of normal opening and closing of a door together with the detection signal of the door full-open detection switch, and the opening / closing state of a door. The fluctuation waveform of the air pressure inside the cylinder detected by the pressure sensor shown in Fig. 1 when a foreign object is caught during the closing operation of the door is shown together with the detection signal of the door fully closed detection switch and the open / closed state of the door. Figure. The figure which shows the fluctuation waveform of the air pressure inside the cylinder detected by the pressure sensor shown in FIG. 1 together with the detection signal of the door fully open detection switch and the open / closed state of the door when foreign matter is drawn in during the door opening operation. ..

The vehicle automatic opening / closing door device 1 of the present embodiment will be described with reference to FIG. In the following description, the arrow x direction shown in FIG. 1 is defined as the horizontal direction, and the horizontal direction is described as left and right.

The vehicle automatic opening / closing door device 1 is a left / right double door type, and has an air cylinder 2 horizontally provided above the vehicle entrance / exit (both not shown) and a left door connected to the piston rod 2a of the air cylinder 2. With 3A, the left door 3A and the right door 3B automatically open and close the entrance / exit due to the horizontal movement of the piston rod 2a when air is supplied / exhausted to the inside of the air cylinder 2. Further, the vehicle automatic opening / closing door device 1 is interposed in an air pipe 5 capable of supplying air from an air source 4 inside the air cylinder 2 and an air pipe 5, and supplies and exhausts air to the inside of the air cylinder 2. It is provided with an air supply / exhaust switching valve 6.

Specifically, the air cylinder 2 has a left connecting portion 7A and a right connecting portion 7B for connecting the air pipe 5 to the left and right ends. The left connection portion 7A is fixed to the air cylinder 2 with the left end portion of the air cylinder 2 fitted inside, and the right connection portion 7B is fixed to the air cylinder 2 with the right end portion of the air cylinder 2 fitted inside. Further, the left connection portion 7A and the right connection portion 7B have a built-in air supply / exhaust passage 8. Each of the air supply / exhaust passages 8 has an outer opening 8a opened toward the outside of the left connection portion 7A and the right connection portion 7B, and an inner opening 8b opened toward the inside of the cylinder 2. The inside of the air cylinder 2 is provided at the right end of the piston rod 2a, and the left cylinder chamber 2A on the left side and the right cylinder chamber 2B on the right side sandwich the piston 2a ₁ which is slidable in the horizontal direction inside the cylinder 2. It is partitioned into. The air supply / exhaust passage 8 of the left connection portion 7A communicates with the left cylinder chamber 2A through the inner opening 8b, and the air supply / exhaust passage 8 of the right connection portion 7B communicates with the right cylinder chamber 2B through the inner opening 8b. A guide portion 9 is provided at the left end portion of the left connection portion 7A, and the piston rod 2a penetrates both the left connection portion 7A and the guide portion 9 and extends outward. The left end portion of the piston rod 2a is fixed to the piston rod fixing portion 11 provided in the left connector 10A fixed to the upper end portion on the left side of the left door 3A.

Further, the vehicle automatic opening / closing door device 1 is provided with a door drive mechanism. This door drive mechanism is left-connected to a left pulley 12A and a right pulley 12B rotatably provided near both left and right ends of an air cylinder 2, and a toothed belt 13 wound around the left pulley 12A and the right pulley 12B. It has a rod 14A and a right connecting rod 14B. In the toothed belt 13, the inner peripheral surface is a smooth surface that can contact the outer peripheral surfaces of the left pulley 12A and the right pulley 12B, and a plurality of tooth portions 13a having the same shape are provided on the outer peripheral surface at regular intervals. ing. The left end of the left connecting rod 14A is connected to the upper end of the left connecting tool 10A, extends in the horizontal direction, and has a length such that the right end is located on the left side of the right pulley 12B. On the lower surface of the left connecting rod 14A, a plurality of tooth portions 14A ₁ that mesh with the tooth portions 13a of the toothed belt 13 are provided at the same intervals as the tooth portions 13a. The right connecting rod 14B extends in the horizontal direction, has a length in which the right end is connected to the right connecting tool 10B connected to the upper end of the right door 3B, and the left end is located on the right side of the left pulley 12A. There is. On the upper surface of the right connecting rod 14B, a plurality of tooth portions 14B ₁ that mesh with the tooth portions 13a of the toothed belt 13 are provided at the same intervals as the tooth portions 13a.

The air pipe 5 includes an upstream air pipe 5A located on the upstream side of the air supply / exhaust switching valve 6 and a downstream air pipe 5B ₁ and 5B ₂ located on the downstream side of the air supply / exhaust switching valve 6. .. The downstream end of the downstream air pipe 5B ₁ is connected to the outer opening 8a of the air supply / exhaust passage 8 of the left connection portion 7A, and the downstream end of the downstream air pipe 5B ₂ is outside the air supply / exhaust passage 8 of the right connection portion 7B. It is connected to the opening 8a. The supply / exhaust switching valve 6 communicates the upstream air pipe 5A and the downstream air pipe 5B ₁ to open the downstream air pipe 5B ₂ to the atmosphere, and the upstream air pipe 5A and the downstream air pipe 5B ₂ And can be switched to a state in which the downstream air pipe 5B ₁ is opened to the atmosphere. Such state switching of the supply / exhaust switching valve 6 is performed in conjunction with the operation of a door open / close switch (not shown). The door open / close switch is manually operated by the vehicle crew.

The opening / closing operation of the left door 3A and the right door 3B is realized as follows. When the door open / close switch is closed, the air supply / exhaust switching valve 6 is switched to a state in which the upstream air pipe 5A communicates with the downstream air pipe 5B ₁ and the downstream air pipe 5B ₂ is open to the atmosphere. .. Then, the air supplied from the air source 4 through the upstream air pipe 5A enters the air supply / exhaust passage 8 of the left connection portion 7A through the downstream air pipe 5B ₁ from the outer opening 8a, and enters the air supply / exhaust passage 8 of the left connection portion 7A from the inner opening 8b to the left cylinder chamber. It flows into 2A, and the piston rod 2a moves horizontally to the right due to the air pressure in the left cylinder chamber 2A. Further, the left door 3A also moves horizontally to the right due to the horizontal movement of the piston rod 2a to the right. At the same time, the left connecting rod 14A moves horizontally to the right. Since the left connecting rod 14A meshes with the toothed belt 13, the left pulley 12A and the right pulley 12B both rotate to the right, and the right rotation causes the right connecting rod 14B to move horizontally to the left. As a result, the right door 3B moves horizontally to the left. In this way, the left door 3A and the right door 3B are closed.

When the door open / close switch is opened, the air supply / exhaust switching valve 6 is switched to a state in which the upstream air pipe 5A communicates with the downstream air pipe 5B ₂ and the downstream air pipe 5B ₁ is open to the atmosphere. .. Then, the air supplied from the air source 4 through the upstream air pipe 5A enters the air supply / exhaust passage 8 of the right connection portion 7B through the downstream air pipe 5B ₂ from the outer opening 8a, and enters the air supply / exhaust passage 8 of the right connection portion 7B from the inner opening 8b to the right cylinder chamber. It flows into 2B, and the piston rod 2a moves horizontally to the left due to the air pressure in the right cylinder chamber 2B. Further, the left door 3A also moves horizontally to the left due to the horizontal movement of the piston rod 2a to the left. At the same time, the right connecting rod 14B moves horizontally to the right. Along with this horizontal movement, the left door 3A moves horizontally to the left, and the left pulley 12A and the right pulley 12B rotate to the left, so that the right connecting rod 14B moves horizontally to the right. In this way, the left door 3A and the right door 3B open.

Further, the vehicle automatic opening / closing door device 1 includes a fully closed detection switch 15 as a fully closed detection means for detecting the fully closed state of the left door 3A and the right door 3B, and a fully open detection means as a fully open detecting means for detecting the fully open state. It includes a switch 16 and a control unit 17. Both the fully closed detection switch 15 and the fully open detection switch 16 are provided on the right door 3B side, and each has switch rods 15a and 16a that can be pushed into the inside. The switch rod 15a protrudes to the right in the fully closed detection switch 15, and the switch rod 16a protrudes to the left in the fully open detection switch 16. When the switch rods 15a and 16a are pushed in, the fully closed detection switch 15 and the fully open detection switch 16 are turned on, respectively. The switch rods 15a and 16a are pushed in by the pushing rods 15b and 16b, and the pushing rods 15b and 16b are provided on the right connecting rod 10B and the right connecting rod 14B, respectively. The push rod 15b for pushing the switch rod 15a of the fully closed detection switch 15 is fixed to the right connector 10B, protrudes to the left in the horizontal direction, and faces the switch rod 15a. The push rod 16b for pushing the switch rod 16a of the fully open detection switch 16 is fixed to the lower side of the left end portion of the right connecting rod 14B, protrudes to the right in the horizontal direction, and faces the switch rod 16a. When the left door 3A and the right door 3B are fully closed, the push rod 15b pushes the switch rod 15a, and the fully closed detection switch 15 is turned on. Similarly, when the left door 3A and the right door 3B are fully opened, the push rod 16b pushes the switch rod 16a, and the fully open detection switch 16 is turned on.

As described above, in the automatic door opening / closing device 1 for vehicles, foreign matter such as a person or an object is caught when the left door 3A and the right door 3B are closed, and the door pocket when the left door 3A and the right door 3B are opened (illustrated). There is an urgent need to take measures against the attraction of foreign matter to (omitted). Therefore, the vehicle automatic opening / closing door device 1 includes a pressure sensor 18 that detects the air pressure inside the air cylinder 2. Further, the control unit 17 receives foreign matter into the door pocket in which the left door 3A and the right door 3B are stored when the foreign matter is caught during the closing operation of the left door 3A and the right door 3B, or during the opening operation. The air supply / exhaust direction of the air supply / exhaust switching valve 6 is switched based on the air pressure detected by the pressure sensor 18 when the pull-in occurs, and the opening / closing operation of the left door 3A and the right door 3B is switched. Specifically, the pressure sensor 18 detects the air pressure in the left cylinder chamber 2A and the right cylinder chamber 2B via the pressure detection paths 19A and 19B and the air supply / exhaust passages 8 of the left connection portion 7A and the right connection portion 7B. do. Further, the pressure sensor 18 is connected to the control unit 17 and outputs a signal regarding the detected air pressure to the control unit 17. The pressure sensor 18 detects the air pressure of either the left cylinder chamber 2A or the right cylinder chamber 2B. That is, the pressure sensor 18 detects the air pressure in the right cylinder chamber 2B where air is exhausted when the left door 3A and the right door 3B are closed, and the air is exhausted when the left door 3A and the right door 3B are opened. Detects the air pressure inside the cylinder chamber 2A. The pressure sensor 18 can also be two pressure sensors that exclusively detect the air pressure in the left cylinder chamber 2A and the right cylinder chamber 2B. In this case, the pressure detection path 19A is provided for the pressure sensor that detects the air pressure in the left cylinder chamber 2A, and the pressure detection path 19B is provided for the pressure sensor that detects the air pressure in the right cylinder chamber 2B. ..

With reference to FIG. 2, when the left door 3A and the right door 3B are normally opened and closed, the air pressure of the left cylinder chamber 2A has a waveform shown by a solid line in FIG. 2, and the air pressure of the right cylinder chamber 2B is shown in the figure. The waveform is shown by the broken line. When fully open, the air pressure in the left cylinder chamber 2A becomes the lowest value such as atmospheric pressure, and the fully open detection switch 16 is turned on. At this time, although not shown, the fully closed detection switch 15 is OFF. On the other hand, when fully closed, the air pressure in the right cylinder chamber 2B becomes the lowest value, the fully open detection switch 16 is OFF, and the fully closed detection switch 15 is ON. With reference to FIG. 3, when foreign matter is caught during the closing operation of the left door 3A and the right door 3B, the air pressure in the right cylinder chamber 2B decreases more rapidly than before the foreign matter is caught, and is the lowest value. To reach. Such fluctuations in air pressure also occur when foreign matter is drawn into the door pocket in which both doors 3A and 3B are stored during the opening operation of the left door 3A and the right door 3B. Therefore, in the vehicle automatic opening / closing door device 1, the first reference air pressure and the second reference air pressure are preliminarily applied to the left door 3A and the right door 3B based on the minimum air pressure when fully closed and the minimum air pressure when fully opened. It is set. The first reference air pressure is a detected air pressure for avoiding foreign matter being caught between the two doors 3A and 3B during the closing operation of the left door 3A and the right door 3B, and is a solid line waveform. An air pressure slightly higher than the minimum air pressure is exemplified. The second reference air pressure is a detected air pressure to prevent foreign matter from being drawn into the door pocket in which both doors 3A and 3B are stored while the left door 3A and the right door 3B are open. , The air pressure slightly higher than the minimum air pressure of the broken line waveform is exemplified. The first reference air pressure and the second reference air pressure can be appropriately determined based on the empirical values when various foreign substances are caught and drawn. Further, the first reference air pressure and the second reference air pressure can be set in the control unit 17 or the pressure sensor 18.

By the way, since the first reference pressure and the second reference pressure are detected by the pressure sensor 18 even when the left door 3A and the right door 3B are normally opened and closed, they are based on the air pressure detected by the pressure sensor 18 performed by the control unit 17. The detection signals of the fully closed detection switch 15 and the fully open detection switch 16 are used to switch the supply / exhaust direction of the supply / exhaust switching valve 6. That is, when the first reference air pressure is detected by the pressure sensor 18 during the closing operation of the left door 3A and the right door 3B, the control unit 17 inputs an ON signal from the fully closed detection switch 15 within a predetermined time, for example. When the fully closed state is not detected, the left door 3A and the right door 3B are opened to eliminate the pinching of foreign matter. Further, when the second reference air pressure is detected by the pressure sensor 18 during the closing operation of the left door 3A and the right door 3B, the control unit 17 does not input an ON signal from the fully open detection switch 16 within a predetermined time, for example. When the fully open state such as is not detected, the left door 3A and the right door 3B are closed to eliminate the attraction of foreign matter. Any of the above predetermined times can be appropriately set based on the empirical value when various foreign substances are caught and pulled in.

With reference to FIG. 4, the control of the opening / closing operation of the left door 3A and the right door 3B by the control unit 17 based on the detected air pressure of the pressure sensor 18 when the foreign matter is actually drawn in will be described. When foreign matter is drawn into the door pocket, the air pressure in the left cylinder chamber 2A decreases more rapidly than before, and the pressure sensor 18 detects the second reference air pressure. This detection signal is input to the control unit 17. At this time, since the left door 3A and the right door 3B are not in the fully open state, the ON signal is not input to the control unit 17 from the fully open detection switch 16. Therefore, the control unit 17 switches the air supply / exhaust direction of the air supply / exhaust switching valve 6, exhausts the air in the right cylinder chamber 2B, and supplies air to the left cylinder chamber 2A. As a result, the left door 3A and the right door 3B start the closing operation, and after a predetermined time required for taking out the foreign matter elapses, the left door 3A and the right door 3B start the opening operation again and are in the fully opened state. At this time, an ON signal is input to the control unit 17 from the fully open detection switch 16. After that, the opening / closing control of the left door 3A and the right door 3B by the control unit 17 shifts to the opening / closing control at the time of normal opening / closing.

In this way, the automatic door opening / closing device 1 for vehicles detects the pinching or drawing of foreign matter by utilizing the fluctuation of the air pressure inside the air cylinder 2 when opening / closing the left door 3A and the right door 3B, and determines the state. Since the opening / closing operation of the left door 3A and the right door 3B can be controlled so as to eliminate the problem, it is not necessary to provide an unusual member to be detected in the left door 3A, the right door 3B, or the door pocket, and the installation in an existing vehicle. Can be easily dealt with. In addition, it is possible to reliably detect the pinching or pulling of foreign matter and eliminate the state. Further, when the foreign matter is caught, the left door 3A and the right door 3B are automatically opened, so that the caught foreign matter can be safely removed. Furthermore, when foreign matter is drawn into the door pocket, the left door 3A and the right door 3B are automatically closed, so that the drawn foreign matter is safely removed. Then, when foreign matter is caught, not only the detection of the first reference air pressure but also the detection of full closure of the left door 3A and the right door 3B is used, and when the foreign matter is drawn in, the second reference is used. Since not only the air pressure detection but also the fully open detection of the left door 3A and the right door 3B is used, it is possible to prevent the left door 3A and the right door 3B from malfunctioning repeatedly opening and closing unstablely.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above embodiments. For example, the air cylinder can be provided below the entrance / exit of the vehicle, and any door opening / closing mechanism can be adopted as long as the horizontal movement of the piston rod can be used for opening / closing the door. The same applies to the types of the air supply / exhaust switching valve and the pressure sensor. Further, the door may be a single door type.

1 ... Automatic opening / closing door device for vehicles, 2 ... Air cylinder, 2a ... Piston rod, 3A ... Left door, 3B ... Right door, 4 ... Air source, 5 ... Air piping, 6 ... Supply / exhaust switching valve, 15 ... Fully closed Detection switch (fully closed detection means), 16 ... fully open detection switch (fully open detection means), 17 ... control unit, 18 ... pressure sensor.

Claims (3)

It is equipped with an air cylinder provided horizontally on one of the upper and lower sides of the vehicle entrance and exit, and a left door connected to the piston rod of the air cylinder. It is a left / right double door type automatic opening / closing door device for vehicles, in which the door and the right door automatically open / close the entrance / exit.
In those equipped with an air pipe that can supply air from an air source inside the air cylinder and an air supply / exhaust switching valve that is installed in the air pipe and supplies and exhausts air inside the air cylinder.
A pressure sensor that detects the air pressure inside the air cylinder,
Supply and exhaust based on the air pressure detected by the pressure sensor when foreign matter is caught during the closing operation of both the left and right doors, or when foreign matter is drawn into the door pocket where the door is stored during the opening operation. A control unit that switches the supply / exhaust direction of the switching valve and switches the opening / closing operation of both the left and right doors .
Equipped with a fully closed detection means to detect the fully closed state of both the left and right doors ,
When the first reference air pressure set in advance is detected by the pressure sensor during the closing operation of both the left and right doors, the control unit controls the left and right doors when the fully closed state is not detected within a predetermined time by the fully closed detection means. To eliminate the pinching of foreign matter,
The fully closed detection means is a fully closed detection switch that has a switch rod that can be pushed inward and protrudes to the right, and is turned on when this switch rod is pushed to the left.
The push rod that pushes in the switch rod of the fully closed detection switch is fixed to the right connector connected to the upper end of the right door, and is characterized by protruding to the left in the horizontal direction and facing the switch rod of the fully closed detection switch. Automatic opening and closing door device for vehicles . The automatic opening / closing door device for vehicles is further equipped with a fully open detection means for detecting the fully open state of both the left and right doors, and when a preset second reference air pressure is detected by the pressure sensor during the opening operation of both the left and right doors. When the fully open state is not detected by the fully open detection means within a predetermined time , the control unit closes both the left and right doors to eliminate the attraction of foreign matter, and the fully open detection means is a switch that can be pushed inward and protrudes to the left. It is a fully open detection switch that has a rod and is turned on when this switch rod is pushed to the right. The automatic opening / closing door device for a vehicle according to claim 1, wherein the door device is fixed to the left end of an extending right connecting rod, protrudes to the right in the horizontal direction, and faces the switch rod of the fully open detection switch . It is equipped with an air cylinder provided horizontally on one of the upper and lower sides of the vehicle entrance and exit, and a left door connected to the piston rod of the air cylinder. It is a left / right double door type automatic opening / closing door device for vehicles, in which the door and the right door automatically open / close the entrance / exit.
In those equipped with an air pipe that can supply air from an air source inside the air cylinder and an air supply / exhaust switching valve that is installed in the air pipe and supplies and exhausts air inside the air cylinder.
A pressure sensor that detects the air pressure inside the air cylinder,
The air supply / exhaust direction of the air supply / exhaust switching valve is switched based on the air pressure detected by the pressure sensor when foreign matter is drawn into the door pocket where the doors are stored while the left and right doors are open, and the left and right doors are opened and closed. The control unit that switches the operation and
Equipped with a fully open detection means to detect the fully open state of both the left and right doors,
When the second reference air pressure set in advance is detected by the pressure sensor during the opening operation of both the left and right doors, the control unit closes both the left and right doors when the fully opened state is not detected by the fully opened detection means within a predetermined time. Operate, eliminate the attraction of foreign matter,
The fully open detection means is a fully open detection switch that has a switch rod that can be pushed inward and protrudes to the left , and is turned on when this switch rod is pushed to the right .
The push rod that pushes the switch rod of the fully open detection switch is fixed to the left end of the right connecting rod that extends horizontally with the right end connected to the right connector, and protrudes to the right in the horizontal direction to face the switch rod of the fully open detection switch. An automatic opening / closing door device for vehicles, which is characterized by the fact that it is used.

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