JPH0610391B2 - Guide device for plug door - Google Patents

Description

The present invention relates to a guide device for a plug door, and more particularly to a guide device for a plug door configured to open and close the door by a link mechanism and a slide mechanism.

[Conventional technology]

Conventionally, a guide device for a plug door including a link mechanism that guides a door in the opening direction of a vehicle in a pull-out direction and a slide mechanism that guides the door in an opening / closing direction along a vehicle side wall in a state in which the door is pulled out is known. It has become.

As a specific example of this type of guide device, for example, SAIKAI 53-5
The technology disclosed in Japanese Patent No. 7412 exists. This is the 8th
A link mechanism 103 having a coupling link 102, one end of which is connected to the vehicle 100 and the other end of which is connected to a first guide rail (support frame) 101 as shown in the figure, and a door as shown in FIG.
A slide mechanism 106 is provided, which movably holds 105 on the second guide rail 104 and slidably holds the second guide rail 104 on the first guide rail (support frame) 101. Then, as shown in FIG. 10, the door 105
A guide metal 108 having an elongated hole 107 is fixedly provided inside the door end side end of the pin 109, and a pin 109 slidably fitted in the elongated hole 107 is attached to the tip of the piston rod 110a of the opening / closing cylinder. ing.

Therefore, when the door is closed, the piston rod 110a moves to the 10th position.
By moving backward to the right in the figure, the door 105 also moves to the right,
Thereafter, the coupling link 102 of the link mechanism 103 is rotated from the state shown by the solid line in FIG. 8 to the state shown by the chain line, and accordingly, the guide rails 101, 104 and the door 105 are pulled in the drawing direction (see FIG. 8a). Direction), and when the moving end is reached, the door 105 is fully closed. On the other hand, when the door is opened, the piston rod 110a is pushed to the left in FIG. 10 to exert a pressing force to the left on the door 105, and this pressing force causes the connecting link 102 to be shown by a chain line in FIG. The guide rails 101, 104 and the door 105 are rotated in the direction shown in FIG. 8b.
Direction), and when it reaches the moving end, the door 105
Is brought to a predetermined position outside the vehicle 100.
When the piston rod 100a is further pushed to the left from such a state, the door 105 is moved to the second guide rail 104.
Move to the left along the first guide rail 104
The door 105 is moved to the left along the guide rail (support frame) 101, and when it reaches the moving end, the door 105 is fully opened.

[Problems to be Solved by the Invention]

By the way, according to the conventional plug door guide device, since the guide operation of the door 105 by the link mechanism 103 and the guide operation of the door 105 by the slide mechanism 106 are independently performed, that is, the link mechanism 103 and Slide mechanism 1
Since 06 and 06 are not linked to each other, a situation in which the slide mechanism 106 operates and the door 105 moves in the opening direction before the movement of the door 105 in the take-out direction by the link mechanism 103 is completed. Due to the door 105 (door end side edge)
Will come into contact with the side wall of the vehicle. In addition to this, when the door 105 is moved out in the opening / closing direction along the vehicle side wall, the link mechanism
Since the link mechanism 103 does not have a configuration for holding the 103 in the take-out position, it may cause a situation in which the link mechanism 103 swings, and in this case also causes a problem that the door 105 contacts the vehicle side wall. become.

Further, as is apparent from FIG. 8, the above-mentioned conventional one does not have a structure for holding the link mechanism 103 in the door closed position (state shown by a chain line in the same figure), and therefore, When the door is fully closed, the link mechanism 103 is activated and the door 105 swings in the pulling-out direction, which invites a situation that the airtightness inside the vehicle cannot be maintained.

The present invention has been made in view of the above circumstances, and is configured such that the slide mechanism cannot operate unless the movement of the door in the take-out direction by the link mechanism is completed and the door is taken out. The first technical problem is to prevent the contact between the door and the vehicle side wall by configuring the link mechanism so that it cannot operate while moving in the opening / closing direction.
In addition, the link mechanism is configured to be surely held at the door closed position when the door is fully closed to maintain the airtightness inside the vehicle.
It is a technical subject of.

[Means for Solving the Problems]

The first means for achieving the above-mentioned first technical problem is to provide a pair of link members whose one ends are connected to a vehicle-side member and which are arranged in parallel with each other, and the pair of link members. A linking mechanism that is connected to the other end of the vehicle and that holds the door slidably only in the opening / closing direction, and that guides the parallel movement of the door in the take-out / draw-in direction with respect to the opening of the vehicle. At the same time, in a guide device for a plug door, which is provided between the support frame and the door and is provided with a slide mechanism for guiding the movement of the door in the opening / closing direction along the vehicle side wall, in the opening / closing direction formed in the support frame. A first guide rail portion that extends, a first engagement body that is attached to a door end side end of the door and moves along the first guide rail portion, and a second engagement member that is formed on a vehicle-side member and that extends in the opening / closing direction. guide Lumpur portion and a second which moves along and the second guide rail section is mounted on the door leading end side of the door
And an engaging body, and a bent portion that bends inward of the vehicle and extends in the take-out direction is formed at the end of the second guide rail portion on the door closing side.

In addition to the first means, the second means for achieving the second technical problem is that the door-closing side end of the first guide rail portion formed on the support frame is used. A stopper part is provided, and when the door is fully closed, the first part is provided.
This is where a regulation surface is formed which abuts on the engagement body and regulates the movement of the support frame in the take-out direction.

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

[Action]

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 take-out direction to the outside of the vehicle, the door is attached to the door end side end (closed side end). The second engaging body thus moved moves in the take-out direction along the bent portion of the second guide rail portion, and the first engaging body also attached to the door end side end of the door also moves in the take-out direction. The first engagement body is movable along a first guide rail portion formed on the support frame, and the first guide rail portion extends in the opening / closing direction.
With the movement of the engaging body, the support frame moves in the take-out direction and the link member rotates in the take-out direction. Then, until the second engaging body completes the movement along the bent portion of the second guide rail portion, the door to which the second engaging body is attached cannot move in a direction other than the take-out direction. Therefore, during this time, there is no possibility that the door slides along the support frame only in the opening / closing direction and the door end side (open side end) of the door comes into contact with the vehicle side wall, and the door is smoothly parallel to the take-out direction. You will be able to move. Next, after the second engaging body completes the movement along the bent portion of the second guide rail portion, the door slides along the support frame in the opening direction, and accordingly, the second engaging body moves to the second guide. While the first engaging body moves in the opening direction along the rail portion at the same time as the first engaging body moves in the opening direction along the rail portion, both the first and second engaging bodies are attached to the door. Therefore, the relative positions of the two engaging bodies cannot be displaced during the movement in the opening direction, and therefore, the second guide rail portion formed on the vehicle-side member and the support frame are formed. The relative position with respect to the first guide rail portion is not displaced, and there is no fear of swinging the support frame and thus the link mechanism. This prevents contact between the door and the vehicle side wall due to swing of the link mechanism,
The door can move smoothly in the opening direction. In addition, when the door is slid in the closing direction, the smooth operation is performed in the same manner.

According to the second means, when the door is fully closed, the first engagement body comes into contact with the restriction surface formed on the stopper portion of the first guide rail portion, so that the support frame is moved in the carrying-out direction. Since the movement of the door is blocked, the support frame and thus the link mechanism are securely held in the door closed position without being taken out, and the door carry-out direction is held by this support frame so that it can slide only in the opening / closing direction. The rocking of the vehicle is prevented, and the airtightness inside the vehicle is maintained.

According to the third means, at least when the door is fully closed, the link member is urged in the direction of pulling toward the inside of the vehicle by the operation of the pulling cylinder, so that the link member, and by extension, the link mechanism is surely closed. Therefore, the door, which is held slidably only in the opening / closing direction on the support frame of the link mechanism, does not swing in the take-out direction, and the airtightness inside the vehicle can be more reliably maintained. become.

〔Example〕

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

First, prior to the description of the guide device for the plug door according to the present invention, the schematic structure of the drive portion of the plug door will be described.

That is, as shown in FIG. 7, the schematic structure of the drive unit of the plug door is provided above the opening 2 of the vehicle side wall 1 to move the door 3 in the take-out / drawing direction (the ab direction in the same figure). First guide mechanism 4, 4 for guiding, and the first guide mechanism 4, 4
And second guide mechanisms 5, 5 which are suspended from the door 3 and guide the movement of the door 3 in the opening / closing direction (the direction c-d in the figure). The first
The guide mechanism 4 is fixed to a mounting base (not shown) on the upper wall of the vehicle, and has a guide body 4a disposed at an inclination angle of 45 degrees with respect to the vehicle side wall 1, and slidably held by the guide body 4a. And the second guide mechanism 5 is
A guide rail 5a extending in a horizontal direction in parallel with the door 3,
It is composed of a pair of sliding pieces 5b, 5b held slidably along the guide rail 5a. And the first guide mechanism
The guide rails 5a of the second guide mechanism 5 are attached to the slide bodies 4b, 4b of 4, 4 via the brackets 6, 6, and the slide pieces 5b, 5b of the second guide mechanism 5 are attached to the slide pieces 5b, 5b. The door bracket 7 fixed to the upper portion of the door end side end of the door 3 is attached via a connecting metal fitting 8. Further, an opening / closing cylinder 9 extending in a horizontal direction in parallel with the door 3 is fixedly supported on the mounting base of the vehicle upper wall portion directly below the first guide mechanism 4, 4 via holding brackets 10, 10. An auxiliary guide roller 12 is supported by a tip fitting 11 attached to the tip of a piston rod 9a of the opening / closing cylinder 9, and the auxiliary guide roller 12 is connected to one end portion (right end portion) of the connecting fitting 8. ) Is clamped by an auxiliary guide rail 13 attached to () so as to be movable back and forth. Further, between the pair of first guide mechanisms 4 and 4 is 45 with respect to the vehicle side wall 1.
An inlet / outlet cylinder 14 arranged at an inclination angle of 6 degrees is fixedly supported on a mounting base of the vehicle upper wall through a holding bracket 15, and the tip of a piston rod 14a of the inlet / outlet cylinder 14 has the second guide mechanism. 5 is connected to a guide rail 5a. In addition, in the same figure, the hatched portion shows the fixing portion of the vehicle upper wall portion to the mounting base.

Therefore, when the door 3 starts the opening operation from the fully closed position, the piston rods 9a and 14a of both the open / close cylinder 9 and the in / out cylinder 14 project and move while their respective speeds are adjusted, so that the door 3 and The second guide mechanism 5 is guided by the first guide mechanisms 4 and 4 and taken out in the direction of FIG. 7a. Then, when the piston rod 14a of the loading / unloading cylinder 14 reaches a predetermined position, that is, when it reaches the moving end in the carry-out direction, the door 3 is in the state shown by the reference numeral (a) and the second guide mechanism 5 is the same. The state indicated by the symbol (b) in FIG. Since the guide rail 5a and the connecting fitting 8 do not move relative to each other when the door 3 is moved out, the roller plunger 31a of the limit valve 31 is kept compressed by the limit plate 32. In this way, after the door 3 has moved in the take-out direction by a predetermined dimension, only the piston rod 9a of the opening / closing cylinder 9 continues to project, so that the sliding pieces 5b, 5b of the second guide mechanism 5 and the connection are formed. The metal fitting 8 moves in the opening direction along the guide rails 5a, and accordingly, the door 3 also moves in the opening direction (direction c in the figure). At this time,
The limit plate 32 is the roller plunger 31 of the limit valve 31.
When the roller plunger 31a is moved by the spring force by being separated from the a, the passage state of the cylinder pneumatic circuit (not shown) is changed, and the piston rod 14a of the inlet / outlet cylinder 14 is stopped and the open / close cylinder is opened. When only the piston rod 9a of No. 9 protrudes and reaches the projecting end, that is, when it is in the fully open state, the door 3 is in the state shown by the symbol (a ') in the figure and the second guide mechanism 5 is the same. The state becomes as shown by the symbol (b ') in the figure. When the door 3 is closed, the reverse operation is performed.

Thus, the guide device for the plug door according to the present invention, which is provided below the opening 2 of the vehicle side wall 1, has the following configuration.

That is, this plug door guide device is shown in FIGS.
As shown in the figure, a pair of link members 42a, one end of which is rotatably connected to the upper surface of the box body 40 fixed to the vehicle lower wall 1a via support shafts 41a and 41b, and arranged parallel to each other. , 42b
And the support shafts 43a, 4 at the other end of the pair of link members 42a, 42b.
It has a link mechanism 45 including a support frame 44 rotatably connected via 3b. The support frame 44 has a rail forming plate 46 having an L-shaped cross section, which extends in the opening / closing direction (direction c-d in FIG. 1).
Is fixed to the rail forming plate 46, and a first guide rail portion 47 linearly extending in the opening / closing direction is formed on the rail forming plate 46. Portion 48a extending in the direction (ab direction in FIG. 1)
The second guide rail portion 48 is formed. A staircase-shaped bracket 49 is fixedly provided at the end of the door 3 on the door end side, and a high step portion of the bracket 49 is engaged with (contacts with) the first guide rail portion 47. 1 The engaging body 51 is attached and the second guide rail portion is provided at the low step portion.
A second engagement body 52 that engages with 48 is attached. Further, a stopper member 53 having a U-shape in a plan view is fixedly provided at an end portion of the rail forming plate 46 (first guide rail portion 47) fixed to the support frame 44 on the door closing side. A regulation surface 53a that regulates the movement of the support frame 44 in the take-out direction (direction a in FIG. 1) is formed at the door fully closed.

Further, the guide device for the plug door is constructed by the support frame 44
The slide mechanism 56 includes a slide block 54 fixed to the door opening side end of the (rail forming plate 46) and a linear rail body 55 fixed to the door 3 and extending in the opening / closing direction. A slide block 54 is slidably engaged with the linear rail body 55 only in the opening / closing direction. Therefore, the slide block 54 is configured so as not to move relative to the linear rail body 55 in the left-right direction in FIG.

According to the above configuration, the door 3 is moved by the operation of the above-mentioned drive unit (the entrance / exit cylinder 14 and the opening / closing cylinder 9).
When the opening operation is started from the fully closed position shown in the figure, the door 3
Of the second engaging member 52 attached to the bracket 49 of the door 3 moves in the take-out direction along the bent portion 48a of the second guide rail portion 48, and the first engaging member 51 also attached to the bracket 49 of the door 3 is taken out. However, at this time, since the first engagement body 51 moves while being in contact with the first guide rail portion 47 of the rail forming plate 46, the rail forming plate 46 is fixedly supported. The frame 44 moves in parallel in the take-out direction while rotating the pair of link members 42a, 42b. Then, at the time when the movement of the door 3 in the take-out direction is completed, that is, when the movement of the second engagement body 52 along the bent portion 48a is completed, the door 3 becomes the state shown by the symbol (a) in FIG. At this time point, the first engaging body 51 is slightly moving relative to the first guide rail portion 47 in the door opening direction,
Moreover, the link members 42a, 42b are in a state of being orthogonal to the vehicle side wall 1.

When the door 3 moves in the opening direction from such a state,
The second engagement body 52 moves along the linear portion of the second guide rail portion 48, at the same time the first engagement body 51 also moves along the first guide rail portion 47, and the linear rail body 55 of the door 3 is It is guided and moved by the slide block 54 of the support frame 44 (rail forming plate 46). Then, when the door 3 reaches the moving end in the opening direction, the door 3 is in the state shown by the symbol (a ') in FIG. 2, that is, the fully opened state.

On the other hand, when the door 3 is closed from such a fully opened state, the reverse operation is performed, but when the door 3 is moved in the retracting direction during this closing operation, that is, as shown in FIG. When the state shown by reference numeral (a) is changed to the state shown in FIG. 1, the restriction surface 53a of the stopper member 53 and the first
When the first engagement body 51 is fitted between the guide rail portion 47 and the fully closed state, the first engagement body 51 and the regulation surface 53a come into close contact with each other, whereby the support frame 44 (rail forming plate).
The movement of 46) in the carry-out direction is reliably regulated.

Next, another embodiment of the guide device for the plug door according to the present invention will be described with reference to FIGS.

That is, the other embodiment is a box body fixed to the vehicle lower wall 1a.
The base end portion of the retracting cylinder 61 is rotatably connected to 40 via the bracket 60, and one end of the link member 42b on the door opening side (right side in the figure) of the pair of link members is extended.
Moreover, the extending portion 42b 'and the tip of the piston rod 61a of the retracting cylinder 61 are rotatably connected. Then, the projecting movement and the retreating movement of the piston rod 61a of the retracting cylinder 61 are performed in synchronization with the operation of the moving cylinder 14 in the drive unit. In this case, if necessary, a retracting cylinder may be similarly provided for the link member 42a on the door closing side. In FIGS. 5 and 6, the same components as those of the embodiment shown in FIGS. 1 to 4 are designated by the same reference numerals and the description thereof will be omitted.

Therefore, according to this other embodiment, not only the movement of the door 3 in the take-out and withdrawal direction is assisted by the withdrawing cylinder 61, but especially when the door is fully closed as shown in FIG. The operation of the retracting cylinder 61 keeps the lever 44 urged in the retracting direction, so that the door 3 is positively pressed inward of the vehicle.

By the way, in the above two embodiments, the linear rail body 55 and the slide block 54 are used as the slide mechanism 56, but other slide mechanisms, for example, as shown in FIG. The present invention can be similarly applied to a guide device for a plug door using a slide mechanism of a type.

Further, in the above two embodiments, the present invention is applied below the opening 2 of the vehicle side wall 1a, but the vehicle side wall 1a
It goes without saying that the present invention can be similarly applied to above the opening 2.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

According to the plug door guide device of claim (1), the second engaging body is not moved after the movement along the bent portion of the second guide rail portion, that is, the first engaging body takes out the support frame in the carrying-out direction. The slide mechanism operates and the door cannot move in the opening direction until the door is moved until the door mechanism is moved to the link mechanism and the link mechanism is operated. As a result, contact between the door (door end side end) and the vehicle side wall is reliably prevented. Further, when the door is moved in the opening / closing direction while being brought out, the distance between the first guide rail portion and the second guide rail portion is equal to the mounting distance between the first engaging body and the second engaging body. So, it will always be maintained at a constant separation dimension,
Therefore, the swinging of the support frame in which the first guide rail portion is formed and thus the link mechanism is prevented, and the door can be smoothly moved in the opening / closing direction without contacting the side wall of the vehicle.

According to the guide device for the plug door according to claim (2), the movement of the support frame in the take-out direction is regulated by bringing the regulation surface of the stopper portion (stopper member) into contact with the first engagement body when the door is closed. Since the structure is adopted, the swing of the link mechanism and the swing of the door accompanying it are prevented, and the airtightness in the vehicle is maintained.

According to the plug door guide device of claim (3), when the door is fully closed, the operation of the retracting cylinder urges the link member and thus the link mechanism in the retracting direction, so that the door is securely held in the closed position. Therefore, the airtightness in the vehicle can be maintained more reliably.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a plan view showing a plug door guide device when the door is fully closed, and FIG. 2 shows a plug door guide device when the door is open. The plan view shown in FIG. 3, FIG. 3 is an enlarged side view corresponding to FIG. 1, and FIG. 4 is an enlarged side view corresponding to FIG. 5 and 6 show another embodiment 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 configuration of a drive unit for driving the 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 vertical sectional side view showing a slide mechanism of a conventional example, and FIG. 10 is a schematic plan view showing a structure of a drive unit of a conventional door. . 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 part 48 ... Second guide rail part 48a ... Bent portion 51 ... First engaging body 52 ... Second engaging body 53 ... Stopper portion (stopper member) 53a ... Restricting surface 56 ... Sliding mechanism 61 ... Retracting cylinder 61a ... Piston rod

Claims (3)

[Claims] 1. A pair of link members, one end of which is connected to a member on the vehicle side and which are arranged in parallel to each other, and a pair of link members which are connected to the other ends of the pair of link members, and which opens and closes the door only. A support mechanism that holds a slidable member is provided, and a link mechanism that guides parallel movement of the door in the take-out / draw-in direction with respect to the opening of the vehicle is provided, and the vehicle side wall is provided between the support frame and the door. A guide device for a plug door including a slide mechanism for guiding the movement of the door in the opening / closing direction along the first guide rail portion formed on the support frame and extending in the opening / closing direction, and a door tip side end portion of the door. A first engaging body that is attached and moves along the first guide rail portion; a second guide rail portion that is formed on a vehicle-side member and that extends in the opening / closing direction; The second A second engaging body that moves along the guide rail portion, and a bent portion that bends inward of the vehicle and extends in the take-out direction is formed at a door closing side end portion of the second guide rail portion. Characteristic plug door guide device. 2. A stopper portion is provided at the door closing side end of the first guide rail portion formed on the support frame, and the stopper portion abuts on the first engaging body when the door is fully closed. The guide device for a plug door according to claim (1), characterized in that a restriction surface is formed to restrict the movement of the support frame in the take-out direction. 3. A piston rod of a retracting cylinder attached to a vehicle side member is connected to at least a door opening side link member of the pair of link members, and at least when the door is fully closed, the retracting cylinder operates. 3. The guide device for a plug door according to claim 1, wherein the link member is configured to be biased in the pull-in direction.