JPH03161678A - Guide device of plug door - Google Patents

Abstract

PURPOSE:To prevent the contact of a door with a side wall of a car by having such a construction as a slide mechanism does not operate unless the movement in the corbel direction of the door by a link mechanism is completed or the link mechanism does not operate during the movement of the door. CONSTITUTION:When a door 3 makes open opeation, an open and close cylinder 9 and an in and out sylinder 14 are operated to project each of piston rods 9a and 14a. After that, the door 3 and second guide mechanism 5 are guided by the first guide mechanism 4, and they are corbeled in the direction of (a). Then, when the piston rod 14a reaches the moving end of the corbel direction, a roller plunger 31a of a limit valve 31 is pushed and reduced by a limit plate 32. When the door 3 is moved in the corbel direction by a specific size, the piston rod 9a is only projected. In addition, a sliding piece 5b of the second guide mechanism 5 and a coupling metal fixture 8 are moved in the (c) direction as an open direction along a guide rail 5a and, at the same time, the door 3 is moved in the (c) direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plug door guide device, and more particularly to a plug door guide device configured to open and close the door using a link mechanism and a slide mechanism.

[Conventional technology]

Conventionally, a guide device for a plug door has been known which includes a link mechanism that guides the door in the opening direction of the vehicle and in the pulling direction, and a slide mechanism that guides the door in the opening and closing direction along the side wall of the vehicle while the door is lifted out. It belongs to

As a specific example of this kind of guide device, for example,
There is a technique disclosed in Japanese Patent No.-57412. As shown in FIG. 8, this mechanism includes a link mechanism 103 having a connecting link 102 connected to a vehicle 100 at one end and connected to a first guide rail (support frame) 101 at the other end; As shown in the figure, a slide mechanism 106 is provided, in which the door 105 is movably held on a second guide rail 104, and the second guide rail 104 is slidably held on the first guide rail (support frame) 101. It is prepared. As shown in FIG. 10, a guide metal 108 having an elongated hole 107 is fixedly installed inside the end of the door 105, and a guide metal 108 is slidably fitted into the elongated hole 107. pin 1
09 is attached to the tip of the piston rod 110a of the opening/closing cylinder.

Therefore, when the door is closed, the piston rod 1lOa moves back to the right in FIG. 10, and the door 105 also moves to the right.
2 rotates from the state shown by the solid line to the state shown by the chain line in FIG.
Then, the door 105 moves in parallel in the retracting direction (direction a in FIG. 8), and when it reaches the end of its movement, the door 105 becomes fully closed. On the other hand, when the door is opened, the piston rod 110
As a is pushed to the left in FIG. 10, a pressing force to the left acts on the door 105, and this pressing force causes the coupling link 102 to change from the state shown by the chain line in FIG. 8 to the state shown by the solid line. Each guide rail 10 rotates, and accordingly, each guide rail 10
1, 104, and 8105 move in parallel in the lifting direction (direction b in FIG. 8), and when the door 105 reaches the end of its movement, the door 105 is brought out to a predetermined position outside the vehicle 100.

From this state, the piston rod 1 10a is further pushed out to the left, so that the door 105 moves to the left along the second guide rail 104, and the second guide rail 104 moves along the first guide rail (support The door 105 moves to the left along the frame 101, and when it reaches the end of the movement, the door 105 becomes fully open.

[Problem to be solved by the invention]

By the way, according to the conventional plug door guide device described above, the guiding operation of the door 105 by the link mechanism 103 and the guiding operation of the door 105 by the slide mechanism 106 are performed independently, that is, the link mechanism 103 Since the slide mechanism 106 and the slide mechanism 106 are not linked to each other, the slide mechanism 106 operates and the door 105 is moved before the link mechanism 103 completes moving the door 105 in the lifting direction.
This causes a situation in which the door 105 moves in the opening direction, which causes a problem such as the door 105 (end of the door end) coming into contact with the vehicle side wall. In addition to this, door 10
5 is taken out and moves in the opening/closing direction along the side wall of the vehicle, the link mechanism 103 does not have a structure to hold it in the taken out position, so there is no possibility that the link mechanism 103 may swing. In this case as well, the door 105 comes into contact with the side wall of the vehicle.

Furthermore, as is clear from FIG. 8, the conventional device described above has the link mechanism 103 in the door closed position (indicated by the chain line in the same figure).
3), and as a result, when the door is fully closed, the link mechanism 103 is activated, causing the door 105 to swing in the lifting and retracting direction. It has the disadvantage of not being able to hold

The present invention has been made in view of the above circumstances, and is configured such that the slide mechanism cannot operate until the link mechanism completes movement of the door in the lifting direction. The first technical problem is to prevent contact between the door and the side wall of the vehicle by configuring the link mechanism so that it cannot operate while the door is moving in the opening/closing direction.
In addition, the second step is to maintain the airtightness of the interior of the car by ensuring that the link mechanism is held in the door closed position when the door is fully closed.
This is a technical issue.

[Means to solve the problem]

A first means for achieving the above-mentioned first technical problem is a pair of link members whose one end is connected to a member on the vehicle side and which are arranged parallel to each other, and a pair of link members. A link mechanism is provided, which has a support frame that is connected to the other end and holds the door slidably only in the opening/closing direction, and guides the parallel movement of the door in the pulling direction against the opening of the vehicle. In addition, in the guide device for a plug door comprising a slight mechanism provided between the support frame and the door to guide movement of the door in the opening and closing direction along the vehicle side wall, a first guide rail portion that extends; a first engaging body that is attached to the end of the door on the door side and moves along the first guide rail portion; and a first engagement body that is formed on a member on the vehicle side and extends in the opening/closing direction. 2 Guide rail part and door tip {jl. a second engaging body that is attached to the I1 end and moves along the second guide rail part, and a second engaging body that is bent inward of the vehicle and pulled out at the door closing side end of the second guide rail part. This is where a bent portion extending in the direction is formed.

In addition to the first means, a second means for achieving the second technical problem is that, in addition to the first means, the door closing side end of the first guide rail portion formed on the support frame A stopper part is provided, and a regulating surface is formed on the stopper part for abutting against the first engaging body and regulating movement of the support frame in the extending direction when the door is fully closed.

Furthermore, a third means for achieving the second technical problem is, in addition to the first means or the second means, at least the link on the door opening side of the pair of link members. A piston rod of a retraction cylinder attached to a member on the vehicle side is connected to the member, and the link member is biased in the retraction direction by the operation of the retraction cylinder at least when the door is fully closed.

[Effect]

According to the first means, when the door starts the opening operation from the fully closed position, that is, when the door moves in parallel in the direction of taking it out to the outside of the vehicle, the 11th part of the door end side (closed side end) of the door is The attached second engaging body moves in the lifting direction along the bent part of the section 2 guide rail portion, and the first engaging body also attached to the door end side moves in the lifting direction. However, since this first engaging body is movable along a first guide rail portion formed on the support frame, and this first guide rail portion extends in the opening/closing direction 2],
As the first engaging body moves, the support pillow moves in the take-out direction and the link member rotates in the take-out direction. Then, until the second engaging body completes its movement along the bending part of the second guide rail part, it is possible that the door to which this second engaging body is attached will move in a direction other than the lifting direction. Therefore, during this time, there is no risk that the door will slide only in the opening/closing direction along the support frame and the end of the door (opening end) will come into contact with the vehicle side wall, and the door will slide smoothly in the lifting direction. This means that it can be moved parallel to . Next, after the second engaging body completes the movement along the bending part of the second guide rail part,
The door slides in the opening direction along the support frame, the second engaging body moves in the opening direction along the second guide rail part, and at the same time, the first engaging body moves along the first guide rail part of the support frame. However, since both the first and second engaging bodies are attached to the door, it is possible that the relative positions of both engaging bodies will be displaced when moving in the opening direction. Therefore, the relative position between the second guide rail part formed on the vehicle side member and the first guide rail part formed on the support body will not be displaced, and there is a risk that the support frame and eventually the link mechanism will swing. will disappear. This prevents contact between the door and the vehicle side wall due to swinging of the link mechanism, and allows the door to move smoothly in the opening direction.

Similarly, when sliding the door in the closing direction,
Smooth operation takes place.

According to the second means, when the door is fully closed, the first engaging body comes into contact with the regulating surface formed on the stopper part of the first guide rail part, so that the support frame is moved in the direction of taking out the support frame. Since the movement of the door is prevented, the support frame and thus the link mechanism are securely held in the door closed position without being lifted out, and the door is held in the support frame so that it can slide only in the opening/closing direction. This prevents the vehicle from swinging, thereby maintaining the airtightness of the interior of the vehicle.

According to the third means, at least when the door is fully closed, the link member is biased in the direction of retraction toward the inside of the vehicle by the operation of the retraction cylinder, so that the link member and, by extension, the link mechanism are reliably positioned at the door closed position. Therefore, there is no risk that the door, which is held in the support frame of the link mechanism so that it can slide only in the opening/closing direction, will swing in the removal direction, and the airtightness of the vehicle interior can be maintained even more reliably. become.

ξExample] Embodiments of the present invention will be described below based on the drawings.

First, prior to a description of the plug door guide device according to the present invention, a schematic drawing of the plug door drive section will be described.

That is, as shown in FIG. 7, the general structure of the drive section of this plug door is that it is provided above the opening 2 of the vehicle side wall l and moves the door 3 in the lifting and retracting direction (direction a-b in the figure). A first guide mechanism 4, 4 that guides the door 3, and a first guide mechanism 4, 4 that is suspended from the first guide mechanism 4, 4 to guide the door 3 in the opening/closing direction (c.
d direction). The first guide mechanism 4 includes a guide body 4a fixed to a mounting base (not shown) on the upper wall of the vehicle and disposed at an oblique angle of 45 degrees to the vehicle side wall 1, and the guide body 4a.
The second guide mechanism 5 includes a guide rail 5a extending parallel to the door 3 and in the horizontal direction, and a sliding body 4b slidably held along the guide rail 5a. It consists of a pair of sliding pieces 5b, 5b. The sliding bodies 4b, 4b of the first guide tM+A4, 4 are connected to the second guide tM+A4, 4 through a bracket 6.6.
A guide rail 5a of the guide mechanism 5 is attached, and a door bracket 7 fixed to the upper part of the end of the door 3 is connected to the sliding pieces sb, sb of the second guide mechanism 5. It is attached via a metal fitting 8. Further, directly below the first guide mechanisms 4, 4. , an opening/closing cylinder 9 extending horizontally and parallel to the door 3 is attached to a holding bracket 10 . The piston rod 9a of the opening/closing cylinder 9 is fixedly supported on a mounting base on the upper wall of the vehicle via a
An auxiliary guide roller l2 is supported on the tip fitting 11 attached to the tip of the connecting fitting 8, and this auxiliary guide roller 12 is supported on an auxiliary guide rail l3 attached to one end (right end) of the connecting fitting 8. It is supported so that it can be moved back and forth. 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 attached to a mounting base on the vehicle upper wall via a holding bracket l5. It is fixedly supported, and the tip of the piston rod 14a of this in/out cylinder 14 is connected to the guide rail 5a of the second guide mechanism 5. In addition, in the figure, the diagonally shaded locations indicate locations where the vehicle upper wall portion is fixed to the mounting base.

Therefore, when the door 3 starts its opening operation from the fully closed position, the piston rods 9a and 14a of both the opening/closing cylinder 9 and the entry/exit cylinder l4 protrude and move while their respective speeds are adjusted. The second guide mechanism 5 is the first
It is guided by the guide mechanisms 4, 4 and taken out in the direction of FIG. 7a. When the piston rod 14a of the take-out cylinder 14 reaches a predetermined position, that is, when it reaches the end of movement in the take-out direction, the door 3 is in the state shown by the symbol (A) in the same figure, and the second guide mechanism 5 is in the same state. The state shown by the symbol (mouth) in the figure is reached. When moving this door 3,
Since the guide rail 5a and the connecting fitting 8 do not move relative to each other, the roller plunger 31a of the rimisotohalve 31
The compressed state is maintained by the beam ξ cut plate 32. In this way, after the door 3 moves by a predetermined distance in the taking-out direction, only the piston rond 9a of the opening/closing cylinder 9 continues to move and move, so that the sliding pieces 5b, 5b of the second guide mechanism 5 and the connection The metal fitting 8 moves in the opening direction along the guide rail 5a, and the door 3 also moves in the opening direction (direction C in the figure) accordingly. At this time, the limit plate 32 separates from the roller plunger 31a of the limit valve 31, and the roller plunger 31a moves to protrude due to the spring force, thereby changing the passage state of the cylinder pneumatic circuit (not shown). The piston rod 14a of the entry/exit cylinder 14 is in a stopped state, and only the piston rod 9a of the opening/closing cylinder 9 moves to protrude.At the time when it reaches its protruding end, that is, when it is fully open, the door 3 is marked with the symbol (I) in the figure. ”)
The second guide mechanism 5 is in the state shown in FIG.
The state shown in () is reached. Incidentally, when the door 3 is closed, the operation opposite to the above is performed.

The plug door guide device according to the present invention provided below the opening 2 of the vehicle side wall l has the following configuration.

That is, this plug door guide device is shown in FIGS. 1 to 4.
As shown in the figure, a pair of link members 42a are rotatably connected at one end to the upper surface of a box 40 fixed to the vehicle lower wall 1a via support shafts 41a and 4lb, and are arranged parallel to each other. , 42b, and this pair of link members 42a.
42b has a link mechanism 45 consisting of a support frame 44 rotatably connected to the other end via support shafts 43a and 43b. A rail-shaped plate 46 having an L-shaped cross section and extending in the opening/closing direction (direction c-d in FIG. 1) is fixed to the support frame 44, and the rail forming plate 46 has a rail-shaped plate 46 extending in the opening/closing direction (direction c-d in FIG. 1). An extending first guide rail portion 47 is formed on the box body 40, and a second bent portion 48a is formed at the end on the door closing side of the box body 40 and extends in the takeout/retraction direction (direction a-b in FIG. 1). A power idle rail portion 48 is formed. At the end of the door 3, there is a stepped bracket 49.
A first engaging body 51 that engages with (contacts) the first guide rail portion 47 is attached to the high portion of the bracket 49, and the second guide rail is attached to the low portion of the bracket 49. A second engaging body 52 that engages with the portion 48 is attached. Further, a sto-sopa member 53 having a U-shape in plan view is fixed to the door-closing side end of the rail forming plate 46 (first guide rail portion 47) fixed to the support frame 44. , there is a regulating surface 53 that regulates the movement of the support frame 44 in the lifting direction (direction a in FIG. 1) when the door is fully closed.
Further, this plug door guide device includes a slide block 54 fixed to the door opening side end of the support frame 44 (rail forming plate 46), and a slide block 54 fixed to the door 3 and extending in the opening/closing direction. It has a slide Fti side 56 comprising an extending linear rail body 55, and a slide front lock 54 engages with the linear rail body 55 so as to be slidable only in the opening/closing direction. Therefore, the slide float 54 is configured such that it cannot move relative to the linear rail body 55 in the left-right direction in FIG.

According to the above structure, the above-mentioned drive unit (in/out cylinder l4
When the door 3 starts opening operation from the fully closed position shown in FIGS.
moves in the lifting direction along the bend #1E48a of the second guide rail portion 48, and the first engaging body 51 attached to the bracket 49 of the door 3 also moves in the lifting direction. Since the first engaging body 51 moves while in contact with the first guide rail portion 47 of the rail forming plate 46, the support frame 44 to which this rail forming plate 46 is fixed is connected to the pair of link members 42a. ,42
While rotating b, move in parallel in the take-out direction. Then, when the movement of the door 3 in the lifting direction is completed, that is, when the movement of the second engaging body 52 along the bending part 48a is completed, the door 3' is in the down position shown by the symbol (A) in FIG. ,
At this point, the first engaging body 5l has slightly moved relative to the first guide rail portion 47 in the door opening direction.
Moreover, the link members 42a and 42b are in a state of being perpendicular to the vehicle side wall l.

If the door 3 moves in the opening direction from this state,
At the same time as the second engaging body 52 moves along the linear portion of the second guide rail portion 48, the first engaging body 5l also moves along the first guide rail portion 47, and the linear rail body 55 of the position 3 It moves while being guided by the slide block 54 of the support frame 44 (rail forming plate 46). Then, at the point when it reaches the end of movement in the opening direction, the spring 3 shows the symbol (I) in FIG.
The state shown in is the fully open state.

On the other hand, when the door 3 is operated to close from such a fully open state, the operation opposite to the above will be performed, but if the door 3 moves in the retracting direction during this closing operation, that is, as shown in Fig. 2. When transitioning from the state indicated by symbol (a) to the state shown in FIG. When the fully closed state is reached, the first engaging body 5l and the restricting body 53a are in close contact with each other, and as a result, the support frame 44
Movement of the (rail forming plate 46) in the take-out direction is reliably regulated.

Next, another embodiment of the plug door guide device according to the present invention will be described based on FIGS. 5 and 6.

That is, in this other embodiment, the base end of the retraction cylinder 61 is rotatably connected to the box 40 fixed to the vehicle lower wall 1a via the bracket 60, and the door of the pair of link members is One end of the link member 42b on the open side (right side in the figure) is extended, and this extended portion 42b' and the tip of the piston rod 618 of the retraction cylinder 61 are rotatably connected. The protrusion 9JJ and retraction of the piston rod 61a of the retraction cylinder 6l are performed in synchronization with the operation of the retraction cylinder 14 in the drive section described above. In this case, if necessary, the link member 42a on the door closing side
It is also possible to provide a retraction cylinder in the same way. Incidentally, in FIGS. 5 and 6, structural elements common to the embodiments shown in FIGS. 1 to 4 described above are given the same reference numerals, and the explanation thereof will be omitted.

Therefore, according to this other embodiment, the movement of the door 3 in the lifting/retracting direction is not only assisted by the retracting cylinder 61, but especially when the door is fully closed as shown in FIG. 5, the link member 42b and the support frame 44 is the retraction cylinder 6l
Due to this operation, the state of being biased in the retracting direction is maintained, and the door 3 is actively pressed inward of the vehicle.

By the way, the above two embodiments use the straight rail body 55 and the slide block 54 as the slide mechanism 56, but other slide machine horizontal examples are similar to the conventional example No. The present invention can be similarly applied to a guide device for a plug door using a slide structure as shown in FIG.

Further, in the above two embodiments, the opening 2 of the vehicle side wall 1a
Although the present invention is applicable to the lower part, it goes without saying that the present invention can be similarly applied to the upper part of the opening 2 of the vehicle side wall 1a.

[Effects of the Invention] Since the present invention is configured as described above, it has the following effects.

According to the guide device for a brag door according to claim fl),
Only after the second engaging body completes its movement along the bending part of the second guide rail part, that is, after the first engaging body moves the support frame in the lifting direction and operates the link mechanism. Since the slide mechanism is activated and the door cannot be moved in the opening direction, the link structure and the slide mechanism are well linked and the door (end of the door) is closed.
Contact with the vehicle side wall is reliably prevented.

In addition, when the door is moved in the opening/closing direction with the door lifted out, the distance between the first guide rail part and the second guide rail part is equal to the mounting interval between the first engaging body and the second engaging body. Therefore, the distance between the doors is always maintained at a constant distance, and the support frame in which the first guide rail portion is formed, as well as the link mechanism, are prevented from swinging, and the door does not come into contact with the side wall of the vehicle. This allows for smooth movement in the opening and closing directions.

According to the plug door guide device according to claim (2),
When the door is fully closed, the regulating surface and the first
Since the movement of the support frame in the lifting direction is restricted by making contact with the engaging body, the swinging of the link mechanism and the accompanying swinging of the door are prevented, and the airtightness of the interior of the vehicle is maintained. That will happen.

According to the plug door guide device according to claim (3),
When the door is fully closed, the link member and, in turn, the link mechanism are biased in the retracting direction by the operation of the retracting cylinder, and the door is reliably held in the closed position, so the airtightness inside the vehicle is more reliably maintained. become.

[Brief Description of the Drawings] Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a plan view showing the plug door guide device when the door is fully closed, and Figure 2 is a plan view showing the plug door guide device when the door is fully closed. FIG. 3 is an enlarged side view corresponding to FIG. 1, and FIG. 4 is an enlarged side view corresponding to FIG. 2. 5 and 6 show other embodiments of the present invention,
FIG. 5 is a plan view showing the plug door guide device when the door is fully closed, and FIG. 6 is a plan view showing the plug door guide device when the door is open. FIG. 7 is a plan view showing the structure of a drive section for driving a plug door according to the present invention. Fig. 8 is a schematic plan view showing a link mechanism of a conventional example, Fig. 9 is a longitudinal cross-sectional side view showing a slide mechanism of a conventional example, and Fig. 10 is a schematic plan view showing the structure of a drive section of a door of a conventional example. be. 1... Vehicle (vehicle side wall) 2... Opening 40... Vehicle side member (box) 42a. 42b...Link member 44...Support frame 45...Link mechanism 47...First guide rail portion 48...Second guide rail portion 48a...Bending portion 5l...First engaging body 52...Second engaging body 53...S] One buckle part (stopper Fjn material>53a
...Restriction surface 56...Slide mechanism 6l...Archive cylinder (ila...Piston rotor)

Claims (3)

[Claims] (1) A pair of link members whose one end is connected to a member on the vehicle side and arranged parallel to each other, and which is connected to the other end of the pair of link members and can slide only in the opening/closing direction of the door. and a link mechanism that guides the parallel movement of the door in the pulling direction with respect to the opening of the vehicle, and a link mechanism that is provided between the support frame and the door and extends along the vehicle side wall. A guide device for a plug door comprising a slide mechanism for guiding movement of the door in the opening/closing direction, comprising: a first guide rail portion formed on the support frame and extending in the opening/closing direction; A first engaging body that moves along the first guide rail portion, a second guide rail portion that is formed on a member on the vehicle side and extends in the opening/closing direction, and a second engaging body that is attached to the end portion of the door on the door side and that is connected to the first engaging body that moves along the first guide rail portion; 2
a second engaging body that moves along the guide rail portion;
A guide device for a plug door, characterized in that a bent portion is formed at the end of the second guide rail portion on the door closing side, the bent portion being bent inward of the vehicle and extending in the take-out direction. (2) A stopper part is provided at the end of the first guide rail part formed on the support frame on the door closing side. 2. The plug door guide device according to claim 1, further comprising a regulating surface for regulating movement of the support frame in the lifting direction. (3) A piston rod of a retraction cylinder attached to a member on the vehicle side is connected to at least the link member on the door opening side of the pair of link members, and at least when the door is fully closed, the operation of the retraction cylinder causes the link 3. The plug door guide device according to claim 1, wherein the plug door guide device is configured to bias the member in a retracting direction.