JPH04198577A - Plug door device - Google Patents

Abstract

PURPOSE:To ensure airtightness by constituting a plug door device so that the first and second interlocking bodies are interlocked with the second guide sections in a door front side end of the lower part of a door and that a rail body is interlocked with a holding member in the tail of the door when the door is completely shut. CONSTITUTION:When a door 3 is moved in a shut direction (b) by operation of a going in and out cylinder and an opening and shutting cylinder, the first interlocking body 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 tail of the door.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a plug door device, and in particular, an upper mechanism for opening and closing a door above an opening in a side wall of a vehicle;
The present invention relates to a plug 1-child device having a lower mechanism below the opening for guiding the opening/closing movement of the door.

[Conventional technology]

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

That is, this technology attaches the upper guide rail to the vehicle side member on the inside of the car above the entrance/exit, and attaches the lower rail to the vehicle side member on the inside of the car below the entrance/exit]=1.
Further, 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 the upper coupling metal is engaged with the lower rail. It is. Then, the rotor 1- of the opening/closing cylinder fixed to the vehicle side member is engaged and connected to the upper coupling metal, and
Roso t' of the guide cylinder also fixed to the vehicle side member
It has two levers, top and bottom, that swing as the worker comes and goes to work.
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 can be moved along the inside surface of the door. . In the case of a vehicle, the ends of the upper guide rail and the lower rail on the door edge side are curved inward of the vehicle. Further, the two upper and lower levers are fixed to an operating shaft extending upwardly of the plate and rotate together with the operating shaft.

According to this configuration, when the door is opened from the closed state, the two levers (upper and lower) are swung by the operation of the guide cylinder, and the guide rollers move the upper and lower parts of the door toward the outside of the vehicle. As the door gets dirty, it is lifted out of the vehicle along the curved part of the two-part guide rail and the lower rail, and then, due to the operation of the opening/closing cylinder, the door is moved to the upper guide rail and the lower part. - move parallel to the opening direction along the straight part of the trail 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 When the lever swings, the guide rollers in the guide groove pull the door toward the inside of the vehicle along the curved portions of the upper guide rail and the lower rail.

[Problem to be solved by the invention]

However, according to the technology disclosed in the above-mentioned publication, since the door T part and the lower rail are engaged only in the door example of the door, the lower door end of the door when the door is opened/closed. This causes problems such as rattling on the side, and the door cannot be firmly supported when it is fully opened, and the door easily swings in and out of the vehicle when an external force is applied to the door.

In addition, the one disclosed in the above publication requires an operating shaft for interlocking the two upper and lower levers for the configuration of the lower rail, and the operating shaft is rotatably held. This has the disadvantage that bearings and the like must be attached to the periphery of the entrance/exit, which is extremely disadvantageous in terms of appearance, layout, etc.

Furthermore, according to Japanese Utility Model Application Publication No. 2-71789, a configuration is disclosed in which the upper mechanism that contributes to driving the opening and closing of the door and the door are connected at one point only by a connecting plate provided on the door edge side. However, in a plug door device that has this type of upper mechanism, what is the optimal configuration for guiding and supporting the lower part of the door in order to ensure airtightness and reliability of opening/closing operation? It becomes a problem.

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 responsible for driving the opening and closing of the door, there is no problem in terms of appearance or layout. The technical challenge is to ensure sufficient airtightness and reliability of opening/closing operations without causing damage.

[Means to solve the problem]

The specific means for achieving the above technical problem is such that the door is once lifted out of the vehicle through an opening in the vehicle side wall and then moves along the vehicle side wall, and the door is moved along the vehicle side wall. In the plug door device, the upper mechanism is provided with an upper mechanism that is provided on the negative side of the part and drives the door to open and close, and a lower mechanism that is provided below the opening and guides the opening and closing movement of the door. , above the opening on the vehicle side...; a first guide rail that is attached to the material and guides the movement of the door in and out of the vehicle; and a first guide rail that is suspended from the first rail and extends along the vehicle side wall of the door. a second guy IS rail that guides movement in the opening/closing direction; a slide member connected to the door and sliding in the opening/closing direction along the second guide rail; and a slide member connected to the slide member to move the door in the opening/closing direction. an opening/closing cylinder that moves the door along the first guide rail, and an entry/exit cylinder that is connected to the second guide rail and moves the door along the first guide rail together with the second guide rail, and a pair of link members arranged in parallel at positions corresponding to the door end side, each having one end connected to the lower vehicle side member of the opening and the other end connected to the support frame; a holding member that is attached to the support frame and is located at least on the door end side of the door when the door is closed and engages and holds the door so that it can slide only in the opening/closing direction; and a holding member that is formed on the support frame and extends in the opening/closing direction. A first guide portion, a second guide portion 1 formed on a vehicle-side member on the inside of the vehicle below the opening, extending in the opening/closing direction, and having a door closing side end bent toward the inside of the vehicle (and a second guide portion 1 on the inside of the vehicle below the opening) A first engaging body and a second engaging body are attached to the end of the door and are slidably engaged with the first guide part and the second guide part, respectively.
This is where the engaging body is provided.

[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 second guide rail and the door move toward the outside of the vehicle along the first guide rail. Then, the slide member slides in the opening direction along the second guide rail by the operation of the opening/closing cylinder, and the door moves outward from the vehicle side wall in the opening direction, while the door opens. During operation, the door closes along a predetermined path each time the opening/closing cylinder and the entry/exit cylinder operate in the opposite manner to the above, and when the door is closed, the lower part of the door moves inward of the vehicle due to the action of the entry/exit cylinder. Attracted.

Regarding the operation of the lower mechanism, when the door is opened, the pair of link members first rotate outward from the vehicle due to the operation of the opening/closing cylinder and the entry/exit 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 bending part of the second guide part, and
The engaging body moves outward from the vehicle without moving relative to the first guide part.1. 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 second guide part and the second guide part by the operation of the opening/closing cylinder of the upper mechanism, and are held securely 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.

When the door is fully open, the end of the lower door gl+ on the door tip side is engaged with the first engaging body and the second engaging body, and the first engaging body and the second engaging body are engaged with the first guide part and the second guide part. Since it is also held and held by the holding member, it is firmly supported. On the other hand, when the door is opened, the opening/closing cylinder and the entrance/exit cylinder operate in the opposite manner to the second part.
The door F part moves along a predetermined path, and when the door is fully closed, the first engaging body and the second engaging body move together with the first guide part and the end of the lower part of the door on the door tip side. It is engaged with the second guide part, and the holding glH is engaged with the bottom side of the door at the bottom of the door.
By being engaged and held by the material, sufficient airtightness can be ensured.

〔Example〕

Embodiments of the present invention will be described below based on the drawings (10) Ru.

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 mechanism 4, 4 guides the movement of the door 30 along the vehicle side wall 1 (direction a-b in the figure), and the door 30 is suspended from the first guide mechanism 4. c-d direction)--. The first guide mechanism 4 is a first guide mechanism fixed to a mounting base (not shown) attached to the upper vehicle side member of the opening section 2 and disposed at an inclination angle of 45 degrees with respect to the vehicle side wall 1. along the guide rail 4a and the first guide rail 4a.
The second guide mechanism 5 includes a second guide rail 5a extending parallel to the door 3 and in the horizontal direction, and a sliding body 4b held slidably in the -b direction. It consists of a pair of sliding pieces 5b, 5b held slidably in the opening/closing direction (C-d direction) along 5a, and a sliding member 8 fixedly installed astride these sliding pieces 5b, 5b. . The slide member 8B is a door precedent slide member 8a and a door end slide member 8b that are coupled and fixed together. The sliding bodies 4b, 4b of the first guide mechanisms 4, 4 are connected to the second
The second guide rail 5a of the guy 1-mechanism 5 is suspended, and the slide member 8 of the second guide mechanism 5 (
A door bracket 7 fixedly attached to the upper part of the door end side of the door 3 is attached to the door end side sliding member 8a).

Further, directly below the first guy F'R structure 4.4, there is a door 3.
An opening/closing cylinder 9 extending horizontally in parallel with the opening/closing cylinder 9 is fixedly supported on the mounting base via a holding bracket 1-10.10, and the sliding member 8 is attached to the right end of the piston rod 9a of the opening/closing cylinder 9 A tip end fitting 11 fixed to the right end of the (door bottom side sliding member 8b) is connected so as to be relatively movable only in a direction perpendicular to the c-d direction (vertical direction in the figure). Further, between the pair of first guide mechanisms 4, 4, an in/out cylinder 14 arranged at an inclination angle of 45 degrees with respect to the vehicle side wall 1 is fixedly supported on the base, and a piston of this in/out cylinder 14 is provided. rod river 4
The tip of a is fixed to the second guide rail 5a of the second guide mechanism 5.

Therefore, when starting the opening operation from the fully closed position of the door 3, the screw 1 of both the opening/closing cylinder 9 and the entrance/exit cylinder 14 must be
- The door 3 and the second guide mechanism 5 are guided by the first guide mechanism 4.4 to the outside of the vehicle (in the direction a) by the protruding movement of the front rollers 9a, 4a while their respective speeds are adjusted. Moving.

When the piston rod 4a of the entry/exit cylinder 14 reaches a predetermined position, that is, when it reaches the end of movement in the direction a, the door 3 enters the state shown by the symbol (A) in the same figure, and the second guide mechanism 5 is in the state shown by the symbol (b) in the figure.

After the door 3 has moved a predetermined distance in the direction a in this way,
As only the piston rod 9a of the opening/closing cylinder 9 continues to protrude, the sliding piece 5b of the second guide mechanism 5,
5b and the slide member 8 move in the opening direction (direction C) along the second guide rail 5a, and the door 3 also moves in the opening direction accordingly. When the piston rod 9a of the opening/closing cylinder 9 reaches the protruding end, that is, when it is fully opened, 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 in the figure. The state shown by the symbol (mouth') is reached. 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. Piston rotor F' 14 a of the inlet/outlet cylinder 14
It is provided with a switching means 51 for shifting and a lifting support mechanism 80 for reliably moving the door 3 in the direction a-b.

As shown in FIGS. 2 to 4, the closed position support mechanism 15 includes a locking member 16 fixed to the upper part of the door end side of the door 3;
A projecting member 17 fixed to the edge of the opening 2 in the vehicle side wall 1 (14), the projecting member 1
A contact portion (roller) 18 is attached to the tip of the roller 7. The engagement surface 16a of the locking member 16 (see FIG. 2) is
The door 30 has an inclined surface that is the same as the movement direction (a to b direction) in and out of the vehicle, and in the closed position of the door 3 shown by the solid line in the same figure, this engaging surface 16a and the circumferential surface of the abutting portion 18 are closely engaged. 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 door 3 will be reliably supported in the closed position. Also,
Since the engaging surface 16a is an inclined surface that is the same as the a-b direction, the opening/closing operation of the door 3 will not be hindered. Note that this closed position support mechanism 15 does not have to be provided on the two-part end side of the door 3 as described above, but can be provided on the upper door end side, the lower door end side, or the upper door end side of the door 3. (Alternatively, it may be provided at locations on these two sides.

The switching means 51, as shown in FIG. The door 3 has a locking member 50 that locks the door a7.
While the door 3 is located on the moving path in the b direction, it is in the unlocked position, and while the door 3 is located on the moving path in the c-c direction, it is switched to the locked position. Furthermore,
This switching means 51 includes a detection lever 53 that swings with the movement of a control plate 52 when the door 3 moves from a moving path in the a-b direction to a moving path in the C-d''direction; The control plate 52 is fixed to the lower surface of the slide member 8 (the door end side slide member 8a) (Fig. 6). ), its shape in plan view is a pentagonal shape having an inclined surface 52a parallel to the a-b direction.The base end of the detection lever 53 is connected to the switching valve 11 described later.
The detection lever 53 is fixed to a support shaft 56 that is rotatably held in a valve built-in block 55 that incorporates a valve 5, and a guide roller 5 that comes into contact with and separates from the control plate 52 is attached to the tip of the detection lever 53.
7 is installed. Further, as shown in FIG. 7, the transmission mechanism 54 includes an auxiliary lever 58 that is fixed to the support shaft 56 rotatably held by the valve built-in flock 55 and swings integrally with the detection lever 53. , one end of which is rotatably connected to the tip of the auxiliary lever 58.
9, a cam lever 60 whose one end is rotatably connected to the other end of the connecting rod 59, and a tension lever whose one end is locked to the tip of the auxiliary lever 58 and the other end is locked to the pin 61. It has a coil spring 62. The cam lever 60 is held slidably in the left-right direction inside a storage block 64 that houses the lock member 50, and when the cam lever 60 slides to the right, the lock member 50 moves as shown in the figure. When the cam lever 60 slides to the left, the locking member 50 moves back from the state shown in the figure and prevents the screw 1-rod 14a of the loading/unloading cylinder 14 from moving backward.
The protruding ring of the piston loft river 4a of 4 is allowed. Further, a fan-shaped cam forming body 74 is integrally attached to the detection lever 53, and as the detection lever 53 swings, the cam formed on the back side of the sector-shaped cam forming body 74 in the figure moves. By moving, the switching valve 115 built in the built-in valve program 55 can be switched. Note that 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,
Also, on the right side of the inlet/outlet cylinder 14 in the figure, there is a solenoid valve 106, which will be described later, and an atmosphere opening part IE of the solenoid valve 1060.
A silencer 69 connected to χ is provided.

According to the configuration of the switching means 51 as shown in Part 2, when the door 3 starts its opening operation from the fully closed state and moves in the C direction from the end of the movement in the C direction, the detection lever 53 swings to the right. Cam Reno X-5Q moves to the right and locks the locking member 5.
0 is in a state in which it protrudes outward by a required distance from the storage block 64, that is, in a state in which it assumes a locked position. By taking the locking position of the opening and hook member 50 in this way, the door 3
This means that a predetermined distance from the vehicle side wall 1 can be maintained reliably.

As shown in FIGS. 5 and 8, the carry-out support mechanism 80 includes a guide plate 81 fixedly supported with respect to the mounting base 1χ, and having a guide surface 8 and a, and the slide member 8. It consists of a roller member 82 that is rotatably held by (the door end side slide member 8a) and that can roll in contact with the guide surface 81a.

The guide surface 81a of the guide 1-handling 81 is parallel to the movement path of the door 3 in the vehicle interior and exterior directions (a-1 direction),
The end position of the guide surface 81a in the C direction corresponds to the transition point between the movement of the door 3 in the a-b direction and the movement in the c-d direction. Therefore, when the door 3 starts to open from a fully closed state, ff13 is 0 unless the roller member 82 has moved along the guide surface 81a to the end position of the guide surface 81a on the guide plate 81. As a result, collision between the door 3 and the vehicle side wall 1 caused by the door 3 moving in the C direction while moving in the C direction can be effectively prevented. becomes. Regarding the guide plate 81 described in -, the guide surface 8]a may be made to extend linearly in the C direction from the end position in the C direction to the position corresponding to the locking open position. In this case, as described above, the screw-in rod 14. of the inlet/outlet cylinder 14 is
There is no need to lock 2. Further, it goes without saying that, contrary to the above configuration, the guide plate 81 may be fixed to the slide member 8 and the roller member 82 may be fixedly supported to the mounting base 1χ.

Next, the configuration of the lower mechanism of the plug door device according to the present invention will be explained. As shown in FIGS. 9 to 12, the lower mechanism is supported on the upper surface of a box 20 fixed to the vehicle lower wall 1a. Shafts 21a, 21. A pair of link members 22a, 22b whose one ends are rotatably connected via b, and a support shaft 23a at the other end of the pair of link members 22a, 22b.
It has a link mechanism 25 consisting of a support frame 24 rotatably connected via 23b. A rail forming plate 26 having an 11-shaped cross section extending in the opening/closing direction (direction c-d in FIG. 9) is fixed to the support frame 24.
6, the first chi + - joint + + extending in the c-d direction 1i]
27, and the box body 20 has a bent portion 28a at the end on the door closing side bent toward the inside of the vehicle and extending in the inside and outside direction of the vehicle (direction a-b in FIG. 9). Two guide portions 28 are formed.

A frame bracket 1-29 is fixedly installed at the end of the door 3, and the first guide F is attached to this bracket 29.
A first engaging body 31 that engages with (contacts) the portion 27 and a second engaging body 32 that engages with the second guide portion 28 are attached. Further, a stopper member 33 having a U-shape in plan view is fixed to the door closing side end of the rail forming plate 26 (first guide portion 27) fixed to the support frame 24. A regulating surface 33a is formed to regulate the movement of the support frame 24 in the C direction when the bolt is closed. Furthermore, this lower mechanism includes the support frame 24 (rail forming plate 26).
L7 includes a slide mechanism 36 consisting of a holding member 34 fixed to the end of the door closing side, and a linear rail body 35 fixed to the door 3 and extending in the c-d direction.
5 is slidably engaged with the holding member 34 only in the c-d direction.

Depending on the structure of the lower mechanism such as the second part, when the door 3 starts to open from the fully closed state shown in FIGS. The second engaging body 32 attached to the bracket 29 of the door 3 moves in the C direction along the bent part 28a of the second guide part 28, and the first engaging body 32 attached to the bracket 29 of the door 3 also moves in the C direction. 31 also moves in the C direction, or at this time, the first engaging body 31 moves against the first guide 1- of the rail forming plate 26.
Since the support frame 24 to which the rail forming plate 26 is fixed moves in parallel to the C direction without rotating the pair of link members 22a and 22b. When the movement of the second engaging body 32 along the bending part 28a is completed, the door 3 is in the state shown by the symbol (A) in FIG. 10, and when the door 3 moves in the direction C from this state, , the second engaging body 32 is connected to the second guy 1. ° part 28
While moving along the linear portion of the first engaging body 31
also moves along the first guide part 27, and also moves along the door 3 door 2.
2) The linear rail body 35 is connected to the support frame 24 (rail forming plate 26
) is guided by the holding member 34. Then, when the door 3 reaches the end of its movement in the C direction, the door 3 is moved by the symbol ( ) in FIG.
It becomes fully open as shown in b').

When fully opened, the first engaging body 31 and the second engaging body 32 are connected to the first guide 1ζ portion 27 and the second guide I, respectively.
The door 3 is firmly supported by being engaged with the S portion 28 and also by being engaged with the linear rail body 35 or the holding member 34.

On the other hand, when the door 3 is closed from such a fully open state, the opposite operation to the above is performed, but if the door 3 moves in direction b during this closing operation, that is, the first
In the case of transitioning from the state indicated by the symbol (A) in FIG. 0 to the state shown in FIG. When the fully closed state is reached, the first engaging body 31 and the regulating surface 33a are in close contact with each other. When the door 3 is fully closed, the first engaging body 31 and the second engaging body 32 are engaged with the first guide part 27 and the second guide part 28, respectively, and the door 3 is engaged with the first engaging body 31 and the second engaging body 32, respectively. Since the door end side is engaged with the linear rail body 35 or the holding member 34, the lower part of the door 3 is supported at both ends, and sufficient airtightness can be ensured. .

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

R11, the fluid supply/discharge circuit is 1. As shown in FIG.
a second conduit 103 leading to the conduit 101 and the other bow 1-102; a main conduit 105 leading to the fluid pressure source 104;
Said 1st. The second pipe line 101° 103 is connected to the main pipe line 105.
and an electromagnetic valve 106 selectively connected to the air opening i:ji Eχ.

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 bow 1-1 ] 0 of the in/out cylinder 14 . The above-mentioned switching valve 115 is installed in the first branch pipe line 107 and the second branch pipe line 109. This switching valve 115 is a two-position, four-boat type,
Two internal passages 116,1 that can communicate with each other in one position
17, and two check valves 118 and 119 having different directions are provided at the other position. Then, due to the operation of this switching valve 115, the door 3 is moved by the amount of force (a) inside and outside the vehicle.
While the door 3 is located on the movement route in the opening/closing direction (direction c), both the first branch pipe line 107 and the second branch pipe line 109 are in communication state, and the door 3 is located on the movement route in the opening/closing direction (direction c-d). During this period, the first branch pipe line 107 is cut off only in the direction of the first pipe line 101, and the second branch pipe line 109 is cut off only in the direction of the other bow 1-1.10 of the in/out cylinder 14. This is a cut-off state.

According to the configuration of the fluid supply/discharge circuit as described above, when the door 3 is fully closed, the solenoid valve 1.06 and the switching valve 115 take the positions shown in FIG. 13, so that the pressure fluid from the fluid pressure source 104 is It is supplied to the other bow 1-102 of the opening/closing cylinder 9 and is also supplied to the other bow 1-110 of the entry/exit cylinder 14. As a result, a pressing force is applied to the upper part of the door 3 inward of the vehicle.

When the door 3 moves outward from the vehicle (direction a) from this state, the opening/closing cylinder 9 and the entrance/exit cylinder 14 are switched each time the position of only the solenoid valve 106 is switched to the state shown in FIG. 1-100.1 of each of
08 are supplied with pressure fluid and each other bow 110
2.1.10 becomes in communication with the atmosphere opening part Eχ, and accordingly, the screw 1 and the screw 9a of the opening/closing cylinder 9
At the same time, the piston rod 14a of the in/out cylinder 14 protrudes outward from the vehicle (direction a). Furthermore, when the door 3 completes its movement outward from the vehicle (direction a) and starts moving in the opening direction (direction C), as the detection lever 53 described above swings, the fluid The supply/discharge circuit changes from the above state to the state shown in FIG. 15 by switching the switching valve 115 to the other position. As a result, the pressure air that has reached the first branch pipe line 107 is transferred to the switching valve 11
At the same time, the other bow 1-110 of the inlet/outlet cylinder 14 is brought into communication with the atmosphere opening part Ex. At this time, the screw 1-rod 9a of the opening/closing cylinder 9 continues to protrude in the opening direction (direction C), and the door 3 also moves in the opening direction accordingly. To surely bias and hold a cylinder 14 or a door 3 at a take-out position outside the vehicle. When the door 3 is moved in the closing direction (direction d) after being fully open, the fluid supply/discharge circuit changes the position of only the solenoid valve 106 from the above state, and the fluid pressure source [04] Pressure fluid is supplied to the other boat 102 of the opening/closing cylinder 9;
Along with this, the piston rod 9a of the opening/closing cylinder 9 moves backward in the closing direction (direction d), but at this point, the piston rod 9a of the opening/closing cylinder 9 moves backward from one boat 108 of the opening/closing cylinder 14 toward the atmosphere opening part Ex. Pressure fluid backflow or switching valve 1
15, and the other valve 111 of the inlet/outlet cylinder 14 is opened from the fluid pressure source ]04.
, 0 is prevented by the other check valve 1]9 of the switching valve 115. Therefore, even if a pressing force is applied to the door 3 inward of the vehicle under such conditions, the upper portion of 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, In the fluid supply/discharge circuit, the position of only the switching valve 115 is changed from the state of 1] to the state shown in FIG.
a, 1.4a will move backwards, and the door 3 will surely move inside the vehicle.

〔Effect of the invention〕

As described above, according to the plug door device according to the present invention, even if only the top end of the door is connected to the upper mechanism, the bottom part of the door remains closed when fully closed. The first engaging body and the second engaging body attached to the end of the door end are engaged with the first guide part and the second guide part, and the holding member is engaged with the end of the door. The movement of the lower part of the door toward the outside of the vehicle on the door end side and the door end side -1 is effectively prevented, and the movement of the metal fittings is effectively prevented, thereby improving airtightness. When the door is fully opened, the first engaging body and the second engaging body on the door end side are engaged with the first guide part and the second car (F part), and the holding member is engaged with the door precedent. In this state, the door will be firmly supported by the door tip or support at the bottom of the door.

Furthermore, since the upper and lower mechanisms operate independently, there is no need for the operating shaft and bearings that support it to link the upper and lower levers as in the past, which improves the appearance and appearance. The inconvenience of Layara 1~ will no longer occur.

[Brief explanation of the drawing]

FIGS. 1 to 15 show embodiments of the present invention.
FIG. 1 is a schematic plan view showing the upper mechanism of the plaque 1-child device according to the present invention, FIG. FIG. 4 is an enlarged front view of the main parts showing the closed position support mechanism, FIG. 4 is an enlarged longitudinal sectional side view of the main parts showing the closed position support mechanism, and FIG. 5 shows the switching means and the lifting support mechanism provided in the upper mechanism. 6 is a longitudinal side view taken along line II-II in FIG. 5, FIG. 7 is a bottom view showing the configuration of the switching means, and FIG. 8 is taken along line III-ITI in FIG. 5. FIG. 9 is a plan view showing the state of the lower mechanism of the plug door device according to the present invention when it is bolted closed;
10 is a plan view showing the state of the lower mechanism when the door is closed; FIG. 11 is an enlarged side view corresponding to FIG. 9; FIG. 12 is an enlarged side view corresponding to FIG. 10; 1 to 15 are schematic configuration diagrams showing a control device for a plug door device according to the present invention, respectively. 1... Vehicle side wall 2... Opening part 3... 4 doors total, 1st chi 1-rail 5 total... 2nd guide rail 8... Sliding member 9... Opening/closing cylinder 14... Input/output cylinders 22a, 22h... Link part shrine 24... Support frame 27... First guide part 2) 3... Second guide part 31... First engaging body 'J32... ...Second engaging body 34...Retaining member patent applicant Agent of Japan Air Brake Co., Ltd.
Patent Attorney Mihiko Watanabe ...First engaging body 32...Second engaging body 34...Holding member Fig. 12 U]

Claims (1)

[Claims] (1) An upper mechanism that is configured to move along the vehicle side wall after the door is once lifted out of the vehicle through an opening in the vehicle side wall, and is provided above the opening to drive the door to open and close. and a lower mechanism provided below the opening to guide the opening/closing movement of the door, wherein the upper mechanism is attached to a vehicle-side member above the opening to guide the opening/closing movement of the door. a first guide rail that guides movement in the inward and outward directions; 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 side wall of the vehicle; a sliding member that slides in the opening/closing direction along the second guide rail; an opening/closing cylinder that is connected to the sliding member and moves the door in the opening/closing direction; and a second guide that is connected to the second guide rail. An entry/exit cylinder for moving the door along the first guide rail together with the rail is provided, and the cylinder is disposed in parallel to the lower mechanism at positions corresponding to the door end side and the door end side, and is arranged below the opening. a pair of link members each having one end connected to the vehicle side member and the other end connected to the support frame; a holding member that engages and holds the door in a slidable manner only in the opening/closing direction; a first guide portion formed on the support frame and extending in the opening/closing direction; and a vehicle-side member formed on the inside of the vehicle below the opening. a second guide part that extends in the opening/closing direction and whose end on the door closing side is bent toward the inside of the vehicle; A plug door device comprising a first engaging body and a second engaging body that are slidably engaged.