JPH04198578A - Plug door device and controller thereof - Google Patents

Abstract

PURPOSE:To ensure airtightness by constituting a plug door device so that the first and second interlocking bodies of the lower part of a door are interlocked with the first and second guide members, a rail body is interlocked with a holding member and that an auxiliary cylinder energizes the lower part of the door to the inward of a car when the door is completely shut. CONSTITUTION:When a door 3 is moved in a shutting direction (b) by operation of a going in and out cylinder and an opening and shutting cylinder, the first interlocking body 31 is fitted between a regulatory face 33a of a stopper member 33 and the first guide member 27. When the door 3 is completely shut, the first interlocking body 31 and the regulatory face 33a are closely connected to each other. The first interlocking body 31 and second interlocking body 32 are respectively interlocked with the first guide member 27 and second guide member 28 in a door front side end of the door 3, and a rail body 35 is interlocked with a holding member 34 in the rail of the door, In addition, a link member 22b, a bearing frame 24 and the door 3 are energized to the inward of a car by operation of an auxiliary cylinder 41.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plug door device and a control device thereof, and in particular, an upper mechanism that opens and closes a door above an opening in a side wall of a vehicle, and an upper mechanism that opens and closes a door above an opening in a vehicle side wall. The present invention relates to a plug door device having a lower mechanism for guiding the opening/closing movement of the door, and a control device thereof.

[Conventional technology]

For example, according to Japanese Utility Model Publication No. 57-58043, the following technology is adopted as an automatic 1-child device provided at the entrance/exit of a railway vehicle, etc. It has been suggested that the door be moved outside the vehicle and then moved along the side wall of the vehicle.

That is, in this technique, an upper guide rail is attached to a vehicle-side member on the inner side of the vehicle above the entrance/exit, a lower rail is attached to a vehicle-side member on the inside of the vehicle below the entrance/exit, and
A guide door wheel fixed to the door via an upper coupling metal is engaged with the upper guide rail, and a guide metal fixed to the door via an upper coupling metal is engaged with the lower rail. . Then, the rod of the opening/closing cylinder fixed to the vehicle side member is engaged and connected to the upper coupling metal, and the upper and lower parts swing as the rod of the guide cylinder, which is also fixed to the vehicle side member, moves in and out. The guide roller attached to the tip of the upper lever fits into the guide groove of the door, and the roller attached to the tip of the lower lever moves along the inside surface of the door. This allows employees to transfer to different locations. In this case, the ends of the upper guide rail and the lower rail on the door end side are curved inward of the vehicle. Further, the two upper and lower levers are 1 to 1i extending in the vertical direction.
It is fixed to the +-shaft and rotates together with the operating shaft.

According to this configuration, when the door is opened from the closed state, the two levers swing due to the operation of the guide cylinder, and the guide roller and the roller move the upper and lower parts of the door toward the outside of the vehicle. As a result, the door is pushed out of the vehicle along the curved parts of the upper guide rail and lower rail, and then, by the operation of the opening/closing cylinder, the door is pushed against the upper guide rail and lower rail. It moves in parallel to the opening direction along the straight part of the vehicle while maintaining a constant distance from the vehicle side wall.

On the other hand, when the door is closed from the open position, the opening/closing cylinder moves the door parallel to the closing direction, and when the door reaches the bending point of the upper and lower rails, the upper and lower two The lever swings and the guide rollers in the guide groove draw the door along the curves of the upper guide rail and the lower rail to the internal vehicle forces.

[Problem to be solved by the invention]

However, according to the technique disclosed in the above-mentioned publication, the door is drawn inward to the vehicle only by the thrust of the opening/closing cylinder and the pushing force of the guide cylinder when the door is closed. Only active pulling involves force, and the lower part of the door is simply engaged with the guide bar or lower rail.
There is a problem in that sufficient pulling force does not act on the upper part of the door, and therefore sufficient airtightness cannot be ensured during high-speed travel.

Furthermore, what is disclosed in the ``Second Part Publication'' requires an operating shaft for interlocking the two plate levers, and also requires a bearing or the like to rotatably hold the operating shaft. This has the disadvantage that it must be attached to the periphery of the entrance and exit, which is extremely disadvantageous in terms of appearance and layout.

In addition, according to Utility Model Application Publication No. 2-71789+W, there is a structure in which the upper mechanism that contributes to the single opening/closing drive and the door are connected at one point only by a connecting plate provided on the door end side. However, in a plug door device having this type of upper mechanism, the question is what configuration is best for guiding and supporting the lower part of the door in order to ensure airtightness.

The present invention has been made in view of the above circumstances, and by adding a lower mechanism with an optimal configuration to the existing upper mechanism that is responsible for driving the opening and closing of the door, there is no problem in appearance or layout. The technical challenge is to ensure sufficient airtightness without causing any damage.

[Means to solve the problem]

A concrete means of the plug door device for achieving the above technical problem is that the door is moved outside the vehicle through an opening in the vehicle side wall and then moved along the vehicle side wall. In the plug door device, the plug door device includes an upper mechanism provided above the opening to drive the door to open and close, and a lower mechanism provided below the opening to guide the opening and closing movement of the door. a first guide rail that is attached to the vehicle-side member above the opening and guides the movement of the door in and out of the vehicle; and a first guide rail that is suspended from the first guide rail and guides the door in the opening and closing direction along the vehicle side wall. a second guide rail that guides movement; a slide member that is connected to the door and slides in the opening/closing direction along the second guide rail; and an opening/closing cylinder that is connected to the sliding member and moves the door in the opening/closing direction. and an entry/exit cylinder connected to the second guide rail to move the door along the first guide rail together with the second guide rail, and the lower mechanism is provided with a door end side and a door end side of the door. a pair of link members arranged parallel to each other at positions corresponding to the sides, each having one end connected to a vehicle side member on the inner side of the vehicle below the opening, and the other end 3 connected to a support frame; ,
a holding member attached to the support frame to slidably engage and hold the door only in the opening/closing direction; a first kite part formed on the support frame and extending in the opening/closing direction; and a lower vehicle side of the opening. a second guide part that is formed in a member and extends in the opening/closing direction and whose end on the door closing side is bent toward the inside of the vehicle; The first engaging body and the second engaging body are respectively engaged with the guide portion.
The engagement body is attached to the vehicle-side member, and its long 18 portion is connected to at least one location of the pair of link members or the support frame, and the link member or the support frame is moved to move the lower part of the door into or out of the vehicle. This is where an auxiliary cylinder is provided to move it in the direction.

In addition, regarding the control device for controlling the plaque door device having the above configuration, the fluid is connected to either one of the first pipe line leading to one boat of the opening/closing cylinder and the second pipe line leading to the other boat. A solenoid valve is provided to switch and connect the main pipe line leading to the pressure source, and a first branch pipe line is branched from the middle of the first pipe line, and the first branch pipe line is connected to one boat of the inlet/outlet cylinder. A first auxiliary branch pipe is branched from the middle of the first branch pipe, and the first auxiliary branch pipe is connected to one boat of the auxiliary cylinder, and the second branch pipe is connected to one boat of the auxiliary cylinder.
branching a second branch pipe from the middle of the pipe, connecting the second branch pipe to the other boat of the inlet/outlet cylinder;
A second auxiliary branch pipe is branched from the middle of the branch pipe.
An auxiliary branch pipe is connected to the other bow 1- of the auxiliary cylinder, and between the branch part of the first pipe line and the branch part of the first auxiliary branch pipe line in the first branch pipe line, and the second branch line. The first branch pipe and the second branch pipe when the door is located on the movement path in the vehicle interior and exterior directions between the branch part of the second pipe line and the branch part of the second auxiliary branch pipe line in the pipe line. The road is connected,
When the door is located on the moving path in the opening/closing direction, the first branch pipe is cut off only in the first pipe direction, and the second branch pipe is in the direction of the other port of the inlet/outlet cylinder and the auxiliary cylinder. It is equipped with a switching valve that shuts off only the air.

[Effect]

According to the above technical means, regarding the operation of the upper mechanism, when the door is opened, the opening/closing cylinder and the entry/exit cylinder are operated so that the door moves along the second guide rail and (1) out of the vehicle along the first guide rail. Then, due to the operation of the opening/closing cylinder, the slide member slides in the opening direction along the second guide rail, and the door accordingly moves outward from the vehicle side wall in the opening direction. ,
When the door is opened, the door closes along a predetermined path by operating the opening/closing cylinder and the entry/exit cylinder in the opposite direction. is drawn towards the inside of the vehicle.

Regarding the operation of the lower mechanism, when the door is opened, the pair of link members first rotates outward from the vehicle due to the operation of the auxiliary cylinder, and at the same time, the support frame also moves parallel to the outside of the vehicle.
Accordingly, the second engaging body moves outward from the vehicle along the bent portion of the second guide part, and the first engaging body moves outward from the vehicle without moving relative to the first guide part, Therefore, the door is temporarily moved outside the vehicle. After this, the first engaging body and the second engaging body are moved in the opening direction along the first guide part and the second guide part by the operation of the opening/closing cylinder of the upper mechanism, and are engaged and held by the holding member. By sliding the door in the opening direction, the door moves parallel to the vehicle side wall while maintaining a predetermined distance. on the other hand,
When the door is opened, the opening/closing cylinder performs the opposite operation to that described above, and the auxiliary cylinder also performs the opposite operation to the above, so that the lower part of the door moves along a predetermined path, and when the door is bolted closed, the door moves in the opposite direction. The lower part is drawn into the vehicle by the operation of the auxiliary cylinder.

Furthermore, regarding the control device that controls the movement of the door mentioned above,
When the door is moved to the outside of the vehicle during the door opening operation, the solenoid valve is switched to the open position and the switching valve is in the predetermined position, so that the pressure fluid from the fluid pressure source is routed through the first pipe line. It is supplied to one boat of the opening and closing cylinder, and
One of the bows 1- of the inlet/output cylinder is supplied through a first branch pipe branched from the first pipe line, and auxiliary water is further supplied via a first auxiliary branch pipe branched from the first branch pipe line. It is supplied to one ball l- of the cylinder. As a result, the respective rods of the opening/closing cylinder, the entrance/exit cylinder, and the auxiliary cylinder operate, and the door is brought out of the vehicle. When the door is moved in the opening direction along the side wall of the vehicle with the door being lifted out of the vehicle in this way, only the switching valve is switched from the above state to another position, thereby removing pressure from the fluid pressure source. In addition to the fact that the pressure fluid is supplied to one boat of each of the opening/closing cylinder, the inlet/outlet cylinder and the auxiliary cylinder via the first line, a second branch line is provided to the other boat of both the inlet/outlet cylinder and the auxiliary cylinder. The door was blocked only in the direction of the port, and the dirt exerted a moderate amount of pressure on the door outward from the vehicle, ensuring that the door maintained a predetermined distance from the side wall of the vehicle. In this state, it will move in the opening direction. Then, when the door moves in the closing direction along the vehicle side wall after being fully open, only the solenoid valve switches from the above state to the closed position, and the pressure fluid from the fluid pressure source flows through the second pipe line. In this case, the second branch pipe branched from the second pipe line is blocked from the direction of the other port of both the inlet/outlet cylinder and the auxiliary cylinder. state, and the first branch pipe is cut off from the direction of the first pipe, whereby the door maintains a predetermined distance between the vehicle side walls while being prevented from moving inward of the vehicle. It will move in the opening direction while doing so. Furthermore, when the door moves inward of the vehicle after completing its movement in the closing direction along the vehicle side wall, only the switching valve switches from the above state to its initial predetermined position, thereby removing the fluid pressure source from the fluid pressure source. The pressure fluid is supplied to the other boat of the opening/closing cylinder via the second pipe line, and at the same time is supplied to the other boat of the entry/exit cylinder via the second branch line, and is further supplied to the second auxiliary branch line. The other boat of the auxiliary cylinder is supplied via a conduit. Due to dirt, the opening/closing cylinder,
The respective lots of entry/exit cylinders and auxiliary cylinders are actuated to draw the door into the vehicle.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, the general structure of the upper mechanism of the plug door device according to the present invention will be explained. As shown in FIG. The first guide mechanisms 4, 4 that guide the movement in the direction a-b in the same figure) and the opening/closing direction of the door 3 suspended from the first guide mechanisms 4, 4 along the vehicle side wall 1 in the same figure. c-d direction)
and a second guide mechanism 5.5 for guiding the movement to.

The first kite mechanism 4 is fixed to a mounting base (not shown) attached to a vehicle-side member on the inside of the vehicle above the opening 2, and is arranged at an inclination angle of 45 degrees with respect to the vehicle side wall 1. 1 guide rail 4a, and a sliding body 4 held slidably in the a-b direction along the first guide rail 4a.
b, and the second guide mechanism 5 includes a second guide rail 5a extending in parallel with the door 3 and in the horizontal direction, and a second guide rail 5a extending in the opening/closing direction (c-d direction) along the second guide rail 5a.
A pair of sliding pieces 5b are slidably held in the .

5b, and a slide member 8 fixed by these sliding pieces 5b, 5b. The sliding member 8 is a door end side sliding member 8a and a door end side sliding member 8b that are coupled and fixed together. A second guide rail 5a of the second guide mechanism 5 is suspended from the sliding bodies 4b, 4b of the first guide mechanisms 4, 4 via a bracket 6.6, and the second guide rail 5a of the second guide mechanism 5 is The sliding member 8 (door end side sliding member 8a) of the mechanism 5 has a door frame 1 fixedly attached to the upper part of the door 30 door opening end. Further, directly below the first guy mechanism 4°4, an opening/closing cylinder 9 extending horizontally and parallel to the door 3 is fixedly supported on the mounting base via a holding bracket 1-10.10. At the right end of the piston rod 9a of the opening/closing cylinder 9, a tip fitting 11 fixed to the right end of the slide member 8 (door end side slide member 8b) is attached in a direction perpendicular to the C-d direction (the same They are connected so that they can move relative to each other only in the vertical direction (in the figure). In addition, the above-
Between the pair of first guide mechanisms 4, 4, an inlet/outlet cylinder 14 arranged at an inclination angle of 45 degrees with respect to the vehicle side wall 1 is fixedly supported on the base. The tip is fixed to the second guide rail 5a of the second guide mechanism 5.

Therefore, when the door 3 starts its opening operation from the fully closed position, the piston rods 9a, 1. /1. Due to the protruding movement of a,
It is guided by the door 3 and the second kite mechanism 5 or the first guide mechanisms 4, 4 and moves to the outside of the vehicle (in the direction a). and,
When the screw rod 14a of the entry/exit cylinder 14 reaches the end of movement in the direction a, the door 3 is in the state shown by the symbol (A) in the figure, and the second guide mechanism 5 is in the state shown by the symbol (B) in the figure.
The state shown is as follows. After the door 3 has moved by a predetermined distance in the direction a, only the screw 1-route throat 9a of the opening/closing cylinder 9 moves to protrude, so that the sliding pieces 5b and 5b of the second guide mechanism 5 and Slide member 8 is in the opening direction (C
direction), and the door 3 also moves in the opening direction accordingly. When the door 3 is fully opened, the door 3 is in the state indicated by the symbol (A') in the same figure, and the second guide mechanism 5 is in the state shown by the symbol (2) in the same figure. Incidentally, when the door 3 is closed, an operation opposite to that described above is performed.

In addition to the above configuration, the upper mechanism according to this embodiment includes a closed position support mechanism 15 for reliably pulling and supporting the door 3 in the closed position, and a closing position support mechanism 15 for reliably supporting the door 3 in the C direction. Detecting the point and the transition point from the movement in the d direction to the movement in the b direction and switching the passage state of the control device (fluid supply/drainage circuit) described later, as well as depending on the movement of the door 3 in the a-b direction and the movement in the c-d direction. switching means 5 for switching the piston rod 14.2 of the entry/exit cylinder 14 between an unlocked state and a locked state; and a lifting support mechanism 80 for ensuring that the door 3 is moved in the a-b direction. are provided.

As shown in FIGS. 2 to 4, the closed position support mechanism 15 includes a locking member 16 and a protruding member 17, and a contact portion (roller) 18 is attached to the tip of the protruding member 17. It is being The engaging surface 16a of the locking member 16 (see FIG. 2) is an inclined surface that is the same as the direction of movement of the door 30 into and out of the vehicle (a-b direction), and the door 3 is shown by a solid line in the figure.
In the closed position, this engagement surface 16a and the contact portion 1
It is closely engaged with the 80-circle surface. Therefore, even if a pressing force is applied to the door 3 in the vertical direction outward from the vehicle when the door 3 is in the closed position, the engaging surface 16a of the locking member 16 and the protruding member 1
7 is engaged with the contact portion 18 at the tip of the door 3.
It is in a state where it is reliably supported in the closed position. Moreover, since the engaging surface 16a is an inclined surface with the same slope as the direction a-b, it does not interfere with the normal opening/closing operation of the door 3.

As shown in FIG. 5, the switching means 51 has a locking member 50 that locks the piston rod 14 of the entry/exit cylinder 14, and the position of the locking member 50 is set so that the door 3 is located on the moving path in the a-b direction. While the door 3 is moving, the door is in the unlocked position, and while the door 3 is on the path of movement in the c-d direction, the door is in the locked position. Further, the switching means 51 includes a detection lever 53 that swings with the movement of the control plate 52 when the door 3 moves from the movement path in the a-b direction to the movement path in the C-d direction; 53 into a protruding and retracting movement of the locking member 50. The control board 52 is
It is fixed to the lower surface of the slide member 8 (door end side slide member 8a) (see Fig. 6), and its shape in plan view is a-
It has a pentagonal shape with an inclined surface 52a parallel to the direction b.

The base end of the detection lever 53 is connected to a switching valve 115, which will be described later.
The detection lever 53 is fixed to a support shaft 56 rotatably held in a valve built-in block 55, and a guide roller 57 that comes into contact with and separates from the control plate 52 is attached to the tip of the detection lever 53.
is installed. Further, the transmission mechanism 54 includes a seventh
As shown in the figure, an auxiliary lever 58 is fixed to the spindle 56 rotatably held in the valve built-in block 55 and swings integrally with the detection lever 53, and one end thereof is the tip of the auxiliary lever 58. A connecting rod 59 rotatably connected to
, a cam lever 60 whose one end is rotatably connected to the other end of the connecting rod 59, and a tension coil spring whose one end is locked to the tip of the auxiliary lever 58 and the other end is locked to the pin 61. 62. The cam lever 60 is held in a storage block 64 that houses the locking member 50 so as to be slidable in the left and right direction, and when the cam lever 60 slides to the right, the locking member 50 is moved as shown in the figure. The piston rod 14 of the in/out cylinder 14 protrudes as shown in FIG. On the other hand, when the cam lever 60 slides to the left, the locking member 50 retreats from the illustrated state to allow the screw-in rod 14 of the entry/exit cylinder 14 to move backward. . Further, the detection lever 53 is provided with a fan-shaped cam forming body 7.
4 is integrally attached, and as the detection lever 53 swings, the cam surface formed on the back side of the fan-shaped cam formation body 74 in the same figure moves, thereby causing the valve built-in block 55 to move.
A switching valve 1]5 built in is configured to be switched. In addition, the parallel hatched areas in FIG. 5 (the same applies to FIG. 1) schematically show the direct or indirect fixing points to the mounting base 1χ, and also indicate the entry/exit cylinder in the same figure. On the right side of 14, a solenoid valve 106, which will be described later, and a muffler 69 connected to the solenoid valve 106 are provided.

According to the configuration of the switching means 51 as described above, when the door 3 moves in the C direction from the moving end in the C direction, the detection lever 53 swings to the right, and the detection lever 53 swings to the right from the reference numerals X and Y in the figure. Z
The cam lever 60 moves rightward, and the locking member 50 assumes the locking position. With the locking member 50 in the locked position in this way, the door 3 can reliably maintain a predetermined distance from the vehicle side wall 1.

As shown in FIGS. 5 and 8, the carry-out support mechanism 80 includes a kite plate 81 that is fixedly supported on the mounting base 1χ and has a guide surface 81a, and the slide member 8 (door end side slide member). 8a) and a roller member 8 which is rotatably held by the guide surface 81a and is rotatable in contact with the guide surface 81a.
It consists of 2.

The guide surface 81a of the guide plate 81 is parallel to the movement path of the door 30 in the vehicle interior and exterior directions (a-b direction), and the end position of the guide surface 81a in the C direction is parallel to the movement path of the door 3 in the a-b direction. The position corresponds to the transition point between movement and movement in the c-c direction. Therefore, when the door 3 starts its opening operation from a fully closed state, the door 3 cannot move in the C direction unless the roller member 82 moves along the guide surface 81a.
This effectively prevents the door 3 from colliding with the vehicle side wall 1 due to the door 3 moving in the C direction during movement in the C direction. In addition, the guide plate 81
In this case, the guide surface 81a may be extended linearly in the C direction from the end position in the C direction to the position corresponding to the bolt opening position. Piston rod 14 of the in/out cylinder 14. There is no need to lock a. Further, contrary to the above configuration, the guide plate 8I may be fixed to the slide member 8, and the roller member 82 may be fixedly supported to the mounting base 1χ.

Next, the structure of the lower mechanism of the plaque latch device according to the present invention will be explained. As shown in FIGS. 9 to 12, the lower mechanism consists of a box 20 fixed to the vehicle lower wall 1a. A pair of link members 22a, 22b are arranged in parallel on the upper surface via support shafts 21.8.21b, and the other ends of the pair of link members 22a, 22b are rotatable via support shafts 23a, 23b. It has a link mechanism 25 consisting of a support frame 24 connected to. The support frame 24 has a one-knoll formation 26 with a cross-sectional shape extending in the opening/closing direction (direction c-d in FIG. 9).
is fixed on this rail forming plate 26, c-C
A first guide portion 27 is formed extending in the direction, and the box body 20 has a door closing side end bent toward the inside of the vehicle so as to extend in the direction of the inside and outside of the vehicle (direction a-b in FIG. 9). Part 2
A second guide portion 28 having a designation 8a is formed. At the end of the door 3, there is a stepped flag 71-29.
is fixedly installed, and a first engaging body 3 that engages (abuts) the first guide portion 27 is provided at a high stage portion of the bracket 29.
1 is attached and the second guide part 28 is attached to the lower part.
A second engaging body 32 that engages with is attached. Also,
A rail forming plate 26 (first
A stopper member 33 having a U-shape in plan view is fixed to the door closing side end of the guide portion 27), and this stopper member 33 has a regulating surface that engages with the first engaging body 31 when the door is opened. 33
a is formed. Furthermore, this lower mechanism includes a holding member 34 fixed to the door closing side end of the support frame 24 (rail forming plate 26), and a linear rail body 35 fixed to the door 3 and extending in the c-c direction. The linear rail body 35 is engaged with the holding member 34 so as to be slidable in the C-C direction. Furthermore, the base end portion of an auxiliary cylinder 41 is rotatably connected to the box body 20 fixed to the vehicle lower wall 1a via a bracket 40, and the pair of links -1jJ
One end of the link member 22b on the open side of the door at the back of the shrine (right side in the same figure) is extended, and this extended portion 22b' and the tip of the screw 1-rod 41a of the auxiliary cylinder 41 rotate. possible to be connected. The extension and retraction movements of the screw I-in rod 4-1a of this auxiliary cylinder 41 are performed in synchronization with the operation of the ejection/exit cylinder 14 described above.

According to the structure of the lower mechanism as described above, the screw 1-rod 4.1a of the auxiliary cylinder 41 moves backward in conjunction with the operation of the above-mentioned entry/exit cylinder 14 and opening/closing cylinder 9, so that it can be attached to the bracket 29 of the door 3. The second engaging body 32 moved in the C direction along the bent part 28a of the second guide part 28, and the first engaging body 31, which is also attached to the bracket 29 of the door 3, also moves in the C direction. At this time, the first engaging body 31 is connected to the first kite portion 2 of the rail forming plate 26.
7, the support frame 24 to which the rail forming plate 26 is fixed is connected to the pair of link members 22.7. t, 22b is not rotated, but is translated in the C direction. Then, when the movement of the door 3 in the C direction is completed, that is, when the movement of the second engaging body 32 along the bent portion 28a is completed, the door 3 is in the state shown by the symbol (A) in FIG. 10. When the door 3 moves in the C direction from this state, the second engaging body 32 moves along the linear portion of the second guide part 28 and at the same time the first engaging body 31 also moves along the first guide part 27. The linear rail body 35 of the door 3 moves along the holding member 3 of the support frame 24 (rail forming plate 26).
Move under the guidance of 4. When the door 3 reaches the end of movement in the C direction, the door 3 enters the state indicated by the symbol (A') in FIG. 10, that is, the fully open state. On the other hand, when the door 3 closes from such a fully open state, the operation is opposite to the second part, but if the door 3 moves in the direction b during the closing operation, that is, When transitioning from the state shown by reference numeral (A) in FIG. 10 to the state shown in FIG. a protrudes and moves, and the first engaging body 31 fits between the regulating surface 33a of the stopper member 33 and the first guide portion 27, and when the fully closed state is reached, the first engaging body 3J and the regulating surface 33a are in close contact with each other. Then, while the door 3 is held in the fully closed state after this, the link member 22b, as well as the support frame 24 and the door 3, remain urged inward of the vehicle by the operation of the auxiliary cylinder 41. The auxiliary cylinder 41 is not limited to the link member 22b on the door opening side (right side) as described above, but may be attached to the link member 222 on the door opening side (left side), or on both link members 22a, 2.
2b, but in order to ensure airtightness when the door 3 is fully opened, it is more preferable to attach the auxiliary cylinder 41 to the link member 22a on the door opening side and to attach the previously described closed position support mechanism 15. It is attached to the door bottom side at the bottom of the door.

Next, a control device, that is, a fluid supply/discharge circuit for controlling the opening/closing cylinder 9, the loading/unloading cylinder 14, and the auxiliary cylinder 41 will be explained.

That is, as shown in FIG. 13, the fluid supply/discharge circuit includes a first conduit 01 leading to one bow 1-100 of the opening/closing cylinder 9 and a second conduit 10 leading to the other bow 1-102.
3, a main conduit 105 leading to a fluid pressure source 104; It has a solenoid valve 106 that selectively connects the second conduit 101 and 103 to the main conduit 105 and the atmosphere opening part Ex.

A first branch pipe line 107 branched from the first pipe line 101 is connected to one bow 1-108 of the inlet/outlet cylinder 14,
A second branch line 109 branched from the second line 103 is connected to the other boat 110 of the in/out cylinder 14 . Further, a first auxiliary branch pipe [+-] branched from the first branch pipe 107 is connected to one bow 1-112 of the auxiliary cylinder 41, and a second auxiliary branch pipe branched from the second branch pipe 109 is connected to one bow 1-112 of the auxiliary cylinder 41. Branch line 113 is connected to the other bow 1-114 of auxiliary cylinder 41. and a second pipe line between the branch part S of the first pipe line 101 in the first branch pipe line 107 and the branch part T of the first auxiliary branch pipe line 111, and a second pipe line in the second branch pipe line 109]03 The switching valve 115 described above is installed between the branch portion U of the second auxiliary branch pipe line 113 and the branch portion V of the second auxiliary branch pipe line 113. This switching valve 115 is
Two-position, four-bow I-type check valves 118, 119 with two internal passages 116, 117 that can communicate with each other in one position and with different directions in the other position.
It is equipped with By the operation of this switching valve 115, both the first branch pipe line 107 and the second branch pipe line 109 are communicated with each other while the door 3 is located on the movement route in the vehicle interior and exterior directions (a-b direction). state, and the door 3 is in the opening/closing direction (
c-C direction), the first branch pipe 107 is cut off only from the first pipe 101 direction, and the second branch pipe 109 is connected to the in/out cylinder 14 and the auxiliary cylinder 41. In this case, only the direction of the other boats 110 and 114 of the two boats is cut off.

According to the configuration of the fluid supply/discharge circuit as described above, when the door 3 is fully closed, the solenoid valve 106 and the switching valve 115 take the positions shown in FIG. It is supplied to the other boat 102 of the opening/closing cylinder 9 via a pipe line 103, and is supplied to the other boat 110 of the entry/exit cylinder 14 via a second branch pipe line 109, and further via a second auxiliary branch pipe line 113. Auxiliary cylinder 41
while the opening/closing cylinder 9. is supplied to the other bow 1-114. One boat 100, 1.0B, 112 of each of the inlet/outlet cylinder I4 and the auxiliary cylinder 41 has an atmosphere opening part E.
It becomes in communication state with respect to χ. As a result, the piston rod 9a of the opening/closing cylinder 9 is urged in the closing direction (direction C), and the screw 14a of the opening/closing cylinder 14 is biased.
is urged inward of the vehicle (in the b direction), and a pressing force is applied inward to the vehicle on the second part of the door 3, and the auxiliary cylinder 41
The screws 1 to 4.1a are biased in the protruding direction, and a pressing force is applied inward to the vehicle on the link member 22b and the support frame 24, as well as on the lower part of the door 3, so that when the door 3 is fully closed, This effectively increases the airtightness of the area.

When the door 3 moves outward from the vehicle (direction C) from this state, only the solenoid valve 106 is switched from the position shown in FIG. 13 to the other position, so that the opening/closing cylinder 9. Bow 1-100° 1.08 of each of the in/out cylinder 14 and the auxiliary cylinder 41. ], 1.2 are supplied with pressure fluid and the respective other boats 102, 110, 1
14 is in communication with the atmosphere open m; When the piston rod 41a of the auxiliary cylinder 41 moves backward, a biasing force is applied to the support frame 24 and the lower part of the door 3 from the link member 22b toward the outside of the vehicle (in the C direction). Furthermore, the door 3 completes its movement toward the outside of the vehicle (direction C) and returns to the opening direction (direction C).
direction), the above-mentioned detection lever 53 swings, and the fluid supply/discharge circuit switches from the above state to the switching valve 115 to the other position. As a result,
Pressure air that has reached the first branch line 107 from the fluid pressure source 104 via the first line 101 passes through one check valve 118 of the switching valve 115 and enters one bow 1 of the inlet/outlet cylinder 14.
- 108 and is supplied to one boat 112 of the auxiliary cylinder 41 via the first auxiliary branch line 111, and at the same time, the other boats 1410, 114 of both the inlet/outlet cylinder 14 and the auxiliary cylinder 41 are operated by switching valves. It is in communication with the atmosphere opening part Ex via the other check valve 119 of 115. At this time, the piston rod 9 of the opening/closing cylinder 9
a continues to protrude in the opening direction (direction C), and the door 3 also moves in the opening direction, but during this movement, the access cylinder 14 and the auxiliary cylinder 41
The upper and lower parts of the vehicle are securely biased and held in a position outside the vehicle. Then, when the door 3 moves in the closing direction (direction C) after being fully opened, the fluid supply/discharge circuit changes the position of only the solenoid valve 106 from the state shown in "-", and the fluid pressure source 104 Pressure fluid is supplied to the other bow 1-102 of the opening/closing cylinder 9 through the second pipe line 103, and accordingly, the piston rod 9a of the opening/closing cylinder 9 moves backward in the closing direction (direction C). However, at this point, the backflow of the pressure fluid from one of the cylinders 108 and 112 of both the inlet/outlet cylinder 14 and the auxiliary cylinder 41 toward the atmosphere opening part Ex is caused by the check valve of one of the switching valves 115.
8, and the outflow of pressure fluid from the fluid pressure source 104 toward the ports 1-110, 114 of both the inlet/outlet cylinder 14 and the auxiliary cylinder 41 is prevented by the switching valve 1.
15 is blocked by the other check valve 119. Therefore,
Under such conditions, a pressing force is applied to the door 3 inward of the vehicle, causing the piston rotation of the entry/exit cylinder 14).
Even if an attempt is made to move the piston rod 41a of the auxiliary cylinder 41 backward, one port 1-108, 11 of both cylinders 1.4.41
2 is in an increased pressure state, and the other port 1-110, 1
14 becomes a negative pressure state, the door 3 is prevented from moving inward of the vehicle. Further, when the door 3 completes its movement in the closing direction (direction d) and starts moving inward of the vehicle (direction b), as the detection lever 53 swings in the opposite direction, The fluid supply/discharge circuit is in the state shown in FIG. 13 with only the switching valve 115 switched from the above state, and therefore the open/close cylinder 9 and the inlet/outlet cylinder 14 are switched.
When both piston rods 9a and 14a move backward, the screw rod 41a of the auxiliary cylinder 41 moves forward, and the upper and lower parts of the door 3 are reliably moved inward of the vehicle.

〔Effect of the invention〕

As described above, according to the present invention, when the door moves in the vehicle interior and exterior directions, the lower part of the door is driven in the vehicle interior and exterior directions by the operation of the opening/closing cylinder and the entrance/exit cylinder of the upper mechanism, and at the same time, the lower part is moved in the processing 931 (also in the lower mechanism The operation of the +iri auxiliary link will actively drive the door in and out of the vehicle, ensuring that the door can move in and out of the vehicle in the same direction.

In addition, when the door is moved in the opening/closing direction along the side wall of the vehicle with the door being lifted out of the vehicle, the lower part of the door is prevented from moving inward by the action of the entry/exit cylinder, and at the same time, the lower part of the door is also moved by the auxiliary cylinder. This action prevents the door from moving inside the vehicle, thereby reliably preventing contact between the door and the side wall of the vehicle. Furthermore, when the door is fully closed, the lower part of the door is urged inward by the operation of the entry/exit cylinder, and at the same time, the lower part of the door is also urged inward by the operation of the auxiliary cylinder, so that when the vehicle is running at high speed. This means that extremely high airtightness can be ensured.

[Brief explanation of the drawing]

1 to 13 show embodiments of the present invention, FIG. 1 is a schematic plan view showing an upper mechanism of a plug door device according to the present invention, and FIG. 2 is a closed position support provided in the upper mechanism. 3 is an enlarged front view of the main parts showing the closed position support mechanism, FIG. 4 is an enlarged vertical sectional side view of the main parts showing the closed position support mechanism, and FIG. 5 is the main part enlarged front view showing the closed position support mechanism. 6 is a longitudinal sectional side view taken along line nn in FIG. 5; FIG. 7 is a bottom view showing the configuration of the switching means;
FIG. 8 is a vertical sectional side view taken along the line III-1m in FIG. Plan view showing the state when the door is open, No. 11
12 is an enlarged side view corresponding to FIG. 9, FIG. 12 is an enlarged side view corresponding to FIG. 10, and FIG. 13 is a schematic diagram showing a control device for a plaque door device according to the present invention. ■...Vehicle side wall 2...Opening 3...Door 4a...First guide rail 5a...Second guide rail 8...Slide member 9...Opening/closing cylinder 14...In/out cylinder 22a, 22b...Link member 24...Support frame 27...First guide portion 28...Second kite" portion 31...First engaging body 32...Second engaging body 34... - Holding member 41...Auxiliary cylinder 101...First pipe line 103...Second pipe line 104...Fluid pressure source 106...Electric bottle valve 107...First branch pipe line 109- ...Second branch pipe 111...First auxiliary branch pipe 113...Second auxiliary branch pipe 115...Switching valve t)-1) I' 24... Support frame 27... First guide part 28... Second guide part 31... First joining body 32... Second holding body 34...・Holding member

Claims (2)

[Claims] (1) An upper mechanism configured to move along the vehicle side wall after the door is lifted out of the vehicle through an opening in the vehicle side wall, and provided above the opening to drive the door to open and close; , a plug door device comprising: a lower mechanism provided below the opening for guiding opening/closing movement of the door; a first guide rail that guides movement in the direction; a second guide rail that is suspended from the first guide rail and guides movement of the door in the opening/closing direction along the vehicle side wall; a slide member that slides in the opening/closing direction along two guide rails, an opening/closing cylinder that is connected to the slide member and moves the door in the opening/closing direction, and an opening/closing cylinder that is connected to the second guide rail and works with the second guide rail. An entry/exit cylinder for moving the door along the first guide rail is provided in the lower mechanism, and is arranged in parallel at positions corresponding to the door end side and the door end side of the door, and is arranged on the vehicle side below the opening. a pair of link members each having one end connected to the member and the other end connected to the support frame; and a holder attached to the support frame to engage and hold the door slidably only in the opening/closing direction. a first guide portion formed on the support frame and extending in the opening/closing direction; and a second guide portion formed on the vehicle side member and extending in the opening/closing direction and having a door closing side end bent toward the inside of the vehicle. a guide part; a first engaging body and a second engaging body attached to the door end side end of the lower part of the door and engaged with the first guide part and the second guide part, respectively;
The rod portion is attached to a vehicle-side member on the inner side of the vehicle below the opening, and the rod portion is connected to at least one of the pair of link members or the support frame, and the link member or the support frame is moved to open the lower part of the door. A plug door device characterized by being provided with an auxiliary cylinder that moves in and out of a vehicle. (2) In the plug door device according to claim (1), either one of the first pipe line communicating with one port of the opening/closing cylinder and the second pipe line communicating with the other port communicates with the fluid pressure source. A solenoid valve is provided to switch and connect the main pipeline, and a first branch pipeline is branched from the middle of the first pipeline, and the first branch pipeline is connected to one port of the inlet/outlet cylinder. Branching a first auxiliary branch pipe line from the middle of the pipe line and connecting the first auxiliary branch pipe line to one port of the auxiliary cylinder, and branching a second branch pipe line from the middle of the second pipe line. The second branch line is connected to the other port of the inlet/outlet cylinder, and a second auxiliary branch line is branched from the middle of the second branch line, and the second auxiliary branch line is connected to the other port of the auxiliary cylinder. a port, between a branch of the first conduit in the first branch conduit and a branch of the first auxiliary branch conduit, and between a branch of the second conduit in the second branch conduit and a second conduit; The first branch pipe and the second branch pipe are in communication between the branch part of the auxiliary branch pipe when the door is located on the movement route in the vehicle interior and exterior directions, and the door moves on the movement route in the opening and closing direction. when the first branch pipe line is in a blocked state only in the direction of the first pipe line, and the second branch pipe line is in a blocked state only in the direction of the other port of the inlet/output cylinder and the auxiliary cylinder. A control device for a plug door device, characterized in that it is provided with a switching valve.