HK1158720B - Plug door device - Google Patents

Description

Plug door device

Technical Field

The present invention relates to a plug door (plug door) device that is provided at an entrance of a vehicle and that is capable of performing opening and closing operations of a door and a plugging operation of the door (an operation of moving the door in a vehicle width direction).

Background

Conventionally, a plug door device described in patent document 1 is known.

In this plug door device, a guide groove for moving the door in the push-out direction or the pull-in direction and sliding the door in the front-rear direction is formed in a fixed base fixed to the vehicle. The guide groove has: the vehicle body structure includes a parallel groove portion disposed parallel to the vehicle side wall, and an inclined groove portion formed continuously with the parallel groove portion and inclined with respect to the vehicle side wall. By configuring to move the door along the guide groove, the door at the fully closed position can be pushed out to the outside of the vehicle side wall first and then slid along the outer surface of the vehicle side wall, using the door driving device that applies a force in the vehicle longitudinal direction to the door, thereby opening the entrance.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2005-61065

Patent document 2: japanese patent laid-open No. 2006 and 316524

Patent document 3: japanese laid-open patent publication No. 2008-121244

Problems to be solved by the invention

(1) However, in the plug door device described in patent document 1, since the inclined groove portion inclined with respect to the vehicle side wall is formed in the fixed base, the width of the fixed base in the vehicle width direction has to be increased. Therefore, there is a problem that the plug door device becomes large.

(2) In the plug door device of patent document 1, the door is connected to a member that transmits a driving force from a door driving device at a door front side ( first side), and the door front side of the door is moved in a pushing or pulling direction during opening and closing operations, and an upper arm at a door tail side ( side) is swung in a vehicle width direction via the door.

Therefore, if the rigidity of the door is insufficient, the rotation of the upper arm may be insufficient due to the deflection of the door or the like. In this case, the door rear side of the vehicle door may come into contact with the vehicle.

In particular, when the coupling to the drive device is performed at the door front side upper portion of the door, the vehicle easily comes into contact with the lower portion of the door rear side distant from the coupling portion, which is problematic.

Further, it is considered that the coupling portion with the door driving device is brought close to the door rear side of the door to avoid the door rear side of the door from contacting the vehicle. However, in order to ensure the same opening width of the entrance, the door driving device, the connecting portion between the door driving device and the door, and the like are arranged over a wide range in the front-rear direction of the vehicle. As a result, the plug door device becomes large, which causes a problem.

Disclosure of Invention

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide a plug door device which can be formed in a small size.

The plug door device of the present invention has the following features to achieve the above object. That is, the plug door device of the present invention has the following features alone or in an appropriate combination.

To achieve the above object, the plug door device according to the present invention includes: the vehicle door device includes a fixed base fixed to a body of a vehicle, a slide base provided on the fixed base so as to be movable in a width direction of the vehicle (hereinafter referred to as a "vehicle width direction"), a door driving device provided on the slide base and moving a door in a front-rear direction of the vehicle via a connecting portion, a shaft portion provided on the connecting portion, and a guide portion provided on the fixed base so as to be rotatable, the guide portion being configured to rotate while abutting on the shaft portion to guide the shaft portion so that the shaft portion moves in one of the width directions of the vehicle when the door is opened, and to rotate while abutting on the shaft portion to guide the shaft portion so that the shaft portion moves in the other of the width directions of the vehicle when the door is closed.

According to this structure, the guide portion abuts against the shaft portion and rotates to guide the shaft portion in the vehicle width direction. Therefore, the movement of the guide portion follows the movement of the door in the vehicle width direction. Therefore, the space occupied by the guide portion in the vehicle width direction can be made smaller in accordance with the moving state of the door in the vehicle width direction. As a result, the door drive device that applies a force in the front-rear direction of the vehicle to the door can perform the opening and closing operation and the plugging operation, and the plugging door device can be formed in a compact size.

In the plug door device, the slide base is preferably disposed on either the upper side or the lower side of the fixed base, and the guide portion is preferably disposed on the other side.

According to this configuration, the slide base and the guide portion provided movably with respect to the fixed base can be provided closer to the fixed base. This makes it possible to reduce the size of the entire device.

In the above-described plug door device, it is preferable that the guide portion includes: a1 st link rotatably provided on the fixed base, a2 nd link rotatably provided on the 1 st link and provided with a roller portion, and a roller guide fixed to the fixed base and guiding the roller portion, (a) when the door is opened, the 1 st link receives a force from the shaft portion via the 2 nd link and rotates by a predetermined angle so that the shaft portion moves in one of the width directions of the vehicle, the roller guide guides the roller portion while the 1 st link rotates by the predetermined angle to maintain a state in which the 2 nd link abuts against the shaft portion, and when the 1 st link rotates by the predetermined angle, the roller guide guides the roller portion so as to prevent the 2 nd link from interfering with the movement of the shaft portion, (b) when the door is closed, the 1 st link rotates by the force from the shaft portion, so that the shaft portion moves toward the other side in the width direction of the vehicle.

According to this structure, the guide portion that can guide the shaft portion in one vehicle width direction when the door is opened and can guide the shaft portion in the other vehicle width direction when the door is closed can be realized with a simple structure.

In the above-described plug door device, it is preferable that the plug door device further includes a biasing mechanism which is provided between the 1 st link and the 2 nd link and biases the 2 nd link so that the roller portion approaches the roller guide.

According to this structure, since the roller portion is urged toward the roller guide, the roller portion can be prevented from separating from the roller guide. Thereby enabling the roller portion to be moved along the roller guide more reliably.

In the above-described plug door device, it is preferable that the slide base has a groove portion extending in the front-rear direction of the vehicle, and the shaft portion is inserted into the groove portion and moves along the groove portion when the door is opened and closed.

According to this structure, the movement of the shaft portion in the vehicle width direction can be restricted by the edge portion of the groove portion of the slide base. Therefore, even when a force acts on the door in the vehicle width direction, the door can be reliably held within the predetermined range in the vehicle width direction.

In the above-described plug door device, it is preferable that the plug door device includes a double-speed rail configured by providing a pinion between two opposing racks, the two racks being provided to extend in the front-rear direction of the vehicle, one of the two racks being coupled to the slide base, the other being coupled to the door, and the pinion being coupled to the coupling portion.

According to this structure, the door driving device can move the connecting portion by a predetermined distance, that is, by a distance which is a multiple of the predetermined distance. Accordingly, the space required for moving the coupling portion can be reduced.

In the above-described plug door device, it is preferable that the slide base is held movably in the width direction of the vehicle by a plurality of linear guides provided on the fixed base.

According to this configuration, by providing the plurality of linear guides, the slide base is coupled to the fixed base at a plurality of positions in the vehicle front-rear direction, and therefore deformation of the slide base can be prevented. Further, the slide base can be easily stably linearly pushed in the vehicle width direction.

In the above-described plug door device, it is preferable that the door drive device includes: a rack and pinion mechanism for moving the coupling portion, and a planetary gear mechanism for distributing a rotational driving force from a driving source to the rack and pinion mechanism.

According to this configuration, the rotational driving force from the driving source can be output not only to the rack and pinion mechanism for opening and closing the door but also to other mechanisms by the planetary gear mechanism. For example, in a state where the door is completely closed, the driving force from the driving source is available as power for driving a lock mechanism for locking the movement of the door via the planetary gear mechanism.

In the above-described plug door device, it is preferable that the plug door device further includes a pivot arm that is connected to a body of the vehicle so as to be pivotable about a vertically extending shaft and that is connected to the door that moves to open and close; the rotating arm is connected to the slide base so as to rotate in accordance with the movement of the slide base.

According to this structure, since the pivot arm is coupled to the slide base, the pivot arm can be reliably pivoted without imparting excessive rigidity to the door.

Further, since the deflection of the door is hardly taken into consideration, even if the connection portion with the door driving device is provided at the door front side of the door, the pivot arm can be reliably pivoted. Therefore, the door driving device and the connecting portion between the door driving device and the door can be disposed in a narrower range in the front-rear direction of the vehicle. Thereby, the plug door device can be formed in a compact size.

In the above-described plug door device, it is preferable that the pivot arm includes: an upper rotating arm connected to the upper part of the door and a lower rotating arm connected to the lower part of the door, wherein the rotating shaft of the upper rotating arm is connected with the rotating shaft of the lower rotating arm.

According to this structure, by rotating either one of the upper and lower swing arms, the other can be reliably rotated.

Effects of the invention

According to the present invention, the door drive device that applies a force to the door in the front-rear direction of the vehicle can perform the opening and closing operation and the plugging operation, and the plugging door device can be formed in a small size.

Drawings

Fig. 1 is an overall schematic view of a plug door device 1 according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of an upper portion of the plug door apparatus 1 shown in fig. 1.

Fig. 3 is a schematic X-X sectional view of the plug door apparatus 1 shown in fig. 2.

Fig. 4 is a partially omitted view of the guide portion of fig. 3.

Fig. 5 is a schematic top view of the plug door apparatus 1 shown in fig. 1.

Fig. 6 is a schematic view corresponding to fig. 5 showing a state in which the door is opened.

Fig. 7 is a schematic view corresponding to fig. 5 showing a fully opened state.

Fig. 8 is an enlarged schematic view showing the plugging mechanism, where (a) is in a fully closed state, (b) is in a plugging operation, and (c) is immediately after completion of the plugging operation.

Fig. 9 is an enlarged schematic view of a portion near the lower swing arm 82 of the plug door apparatus 1 shown in fig. 1.

Fig. 10 is a schematic cross-sectional view of the plug door device 1 shown in fig. 9 taken along line Y-Y.

Fig. 11 is a view showing a plug door device according to a modification.

Description of the reference numerals

1. Plug door device

2. Fixed base

3. Sliding base

4. Vehicle door driving device

5a, 5b, shaft portion

6a, 6b, guide part

61. 1 st connecting rod

62. 2 nd connecting rod

65. Roller

7. Roller guide

81. Upper rotating arm

82. Lower rotating arm

Detailed Description

Hereinafter, the state in which the doors 104a and 104b are completely closed is referred to as "completely closed state", and the state in which the doors are completely opened is referred to as "completely opened state". The position of each member in the fully closed state is referred to as a "fully closed position", and the position in the fully open state is referred to as a "fully open position".

[ concerning the integral construction ]

As shown in fig. 1, a loading/unloading port 102 (opening width indicated by S1) is provided in a vehicle side wall 101. A frame 103 is fixed to an upper portion of the entrance 102 so as to extend in the front-rear direction. Here, the "front-rear direction" is a direction parallel to the traveling direction of the vehicle, and is a direction indicated by an arrow a in fig. 1. In fig. 1, the right side is the front of the vehicle, and the left side is the rear of the vehicle.

A pair of doors 104a and 104b is provided to cover the entrance 102. The pair of doors 104a and 104b are two-door doors, and are opened and closed by the plug door device 1. The doors 104a and 104b are provided so as to substantially seal the entrance 102 in a fully closed state.

As shown in fig. 2, the plug door device 1 includes: a fixed base 2 fixed to a body of a vehicle, a slide base 3 provided on the fixed base 2, a door driving device 4 for driving a door 104, shaft portions 5a and 5b driven in a front-rear direction of the vehicle by the door driving device 4, and guide portions 6a and 6b for guiding the shaft portions 5a and 5 b.

As shown in fig. 2 and 3, an upper plate-like member 103b is fixed to the frame 103 via a bracket 103 a. The connecting plate-like members 103c and 103d are fixed to the upper plate-like member 103b so as to extend downward from the edge portion. The fixed base 2 is fixed to the connecting plate-like members 103c and 103 d. Accordingly, the fixed base 2 is fixed so as not to be movable relative to the frame 103 (the body of the vehicle). The fixed base 2 is disposed such that a linear edge portion located on the outer side in the vehicle width direction is parallel to the front-rear direction of the vehicle. Further, recesses 2a and 2b (see fig. 5(b)) are formed in the edge portion of the fixed base 2 located on the outer side in the vehicle width direction so as to be recessed inward in the vehicle width direction.

Here, the "vehicle width direction" is a direction perpendicular to the front-rear direction and the vertical direction of the vehicle, and is a direction indicated by an arrow B in fig. 3, 5, and the like. In fig. 3, the right side is the inside of the vehicle, and the left side is the outside of the vehicle.

As shown in fig. 3, the slide base 3 is configured to include: a plate-like member having a cross section perpendicular to a front-rear direction of the vehicle bent in a substantially L-shape. The plate-like member includes: a bottom panel portion 32 disposed substantially horizontally, and a back panel portion 33 disposed substantially vertically.

As shown in fig. 5, the slide base 3 has a symmetrical shape in the front-rear direction of the vehicle. Grooves 32a and 32b (groove portions) extending in parallel with the front-rear direction of the vehicle are formed in the bottom plate portion 32 of the slide base 3. The grooves 32a and 32b are grooves penetrating the bottom plate portion 32.

As shown in fig. 2, the slide base 3 is provided on the upper side of the fixed base 2 via a linear guide 31 extending in parallel with the vehicle width direction. The linear guides 31 are arranged in total three in the vicinity of both end portions and the central portion of the fixed base 2 in the vehicle front-rear direction.

As shown in fig. 3, the linear guide 31 includes: a rail 31a fixed to the upper surface of the fixed base 2 and extending in the vehicle width direction, and a slide member 31b slidable along the rail 31 a. The slide member 31b is fixed to the lower surface of the bottom plate portion 32 of the slide base 3.

Thus, the slide base 3 can move in the vehicle width direction with respect to the fixed base 2.

As shown in fig. 3 and 5, the movement of the slide base 3 inward in the vehicle width direction is restricted at a position where it abuts against a stopper 21 provided on the stationary base 2. Further, the movement of the slide base 3 to the outside in the vehicle width direction is restricted at a position where the slide member 31b abuts against the stopper 22.

[ mechanism for driving vehicle door ]

As shown in fig. 3, the body 41 of the door drive device 4 is fixed to the back panel portion 33 of the slide base 3. As shown in fig. 2, a pair of racks 42a and 42b extend from the body 41 in the front-rear direction of the vehicle. An electric motor (not shown) of a direct drive type capable of rotating forward and backward is provided in the main body 41. By driving the motor, the pinion gear 42c meshed with the pair of racks 42a, 42b is rotated via the planetary gear mechanism G, and the pair of racks 42a, 42b are moved in opposite directions to each other.

The pair of racks 42a and 42b are coupled to the 1 st brackets 43a and 43b (coupling portions), respectively, at their tips. The 1 st carriers 43a and 43b are coupled to the 2 nd carriers 44a and 44b and the rail pinions 46a and 46b of the double speed rails 45a and 45b, respectively. Specifically, the 1 st carriers 43a, 43b, the 2 nd carriers 44a, 44b, and the speed doubling rail pinions 46a, 46b are coupled via support rails 49, 49 (see fig. 3) of speed doubling rails 45a, 45b, which will be described later. Shaft portions 5a and 5b are fixed to the 2 nd brackets 44a and 44b, respectively, so as to extend downward.

That is, the rack 42a, the 1 st bracket 43a, the 2 nd bracket 44a, and the rail pinion 46a are coupled to each other so that their relative positions do not change. Similarly, the rack 42b, the 1 st bracket 43b, the 2 nd bracket 44b, and the rail pinion 46b are coupled to each other so that their relative positions are unchanged. Further, the 1 st brackets 43a and 43b are coupled with locking shaft portions 91a and 91b with which the locking mechanism 90 can be engaged.

Here, the double speed rail 45a is provided to extend in the front-rear direction of the vehicle, and is configured to include: a rail pinion gear 46a, two vertically opposed racks (an upper rack 47a and a lower rack 48a), and a support rail 49 (see fig. 3) that rotatably supports the pinion gear 46a and slidably sandwiches the upper rack 47a and the lower rack 48a in the vehicle width direction. The upper rack 47a is coupled to the door 104a and moves together with the door 104 a. The lower rack 48a is fixed to the upper surface of the slide base 3 to move together with the slide base 3. Therefore, when the rail pinion gear 46a moves in the front-rear direction of the vehicle together with the support rail 49, the upper rack 47a moves in the same direction as the rail pinion gear 46a by a movement amount that is a multiple of the movement amount of the rail pinion gear 46 a.

The same configuration is also adopted for the double speed rail 45 b. That is, since the upper rack 47b of the double speed rail 45b is fixed to the door 104b and the lower rack 48b is fixed to the slide base 3, the door 104b can be moved in the front-rear direction by moving the rail pinion 46b in the front-rear direction.

Therefore, when the pinion gear 42c of the door drive device 4 rotates in the forward direction (clockwise direction in fig. 2), the rack gear 42a moves forward (rightward direction in fig. 2) of the vehicle, and the shaft portion 5a and the door 104a move forward. At this time, the rack 42b moves rearward (leftward in fig. 2) of the vehicle, and the shaft portion 5b and the door 104b move rearward. That is, the doors 104a and 104b are opened by the forward rotation of the pinion gear 42c of the door drive device 4, and the doors 104a and 104b are closed by the reverse rotation (counterclockwise direction in fig. 2) of the pinion gear 42 c.

In addition, since the structure for driving the vehicle front side door 104a and the structure for driving the rear side door 104b are substantially symmetrical, in the following description, the structure for driving the front side door 104a will be mainly described, and the structure for driving the rear side door 104b will be omitted.

As shown in fig. 2, the shaft portion 5a is fixed to the 2 nd bracket 44a so as to extend downward from the 2 nd bracket 44a interlocked with the rack 42 a. As shown in fig. 3, two rollers (an upper roller 51 and a lower roller 52) are provided in the vicinity of the lower end of the shaft portion 5 a. The rollers 51 and 52 are provided to be rotatable about the shaft portion 5a as a rotation axis.

[ concerning the stopper mechanism ]

Fig. 8 is an enlarged schematic view of the plug mechanism (guide portion 6a, roller guide 7, shaft portion 5a) shown in fig. 5(b), and is a view for explaining the operation of the shaft portion 5a and the guide portion 6a when the door 104a is opened. In fig. 8, (a) shows a fully closed state, (b) shows a state in the middle of the plugging operation, and (c) shows a state immediately after the completion of the plugging operation.

The plugging mechanism for plugging the doors 104a and 104b includes: a guide portion 6a, a roller guide 7, and a shaft portion 5 a. As shown in fig. 3 and 8, a roller guide 7 is fixed to the lower surface of the fixed base 2. The guide portion 6a includes a1 st link 61 and a2 nd link 62. The guide portion 6a is disposed below the fixed base 2.

As shown in fig. 8, the 1 st link 61 is a substantially rectangular plate-like member, and is provided so that one end side thereof is rotatable with respect to the fixed base 2. Specifically, the 1 st link 61 is provided to be rotatable about a1 st rotation shaft 63 oriented in a substantially vertical direction. Further, a1 st notch portion 61a capable of accommodating the lower roller 52 of the shaft portion 5a is formed in a peripheral edge of the 1 st link 61 on the other end side.

The 2 nd link 62 is a plate-like member and is rotatably provided to the 1 st link 61. Specifically, the 2 nd link 62 is provided on the 2 nd pivot shaft 64 facing in the substantially vertical direction, and the 2 nd pivot shaft 64 is provided in the vicinity of the 1 st notch portion 61a of the 1 st link 61. Further, a2 nd notched portion 62a capable of accommodating the upper roller 51 of the shaft portion 5a is provided at the peripheral edge of the 2 nd link 62. Further, the 2 nd link 62 is provided with a roller 65 (roller portion) rotatable about a vertical axis. The roller 65 is attached to a rotating shaft 66 protruding upward from the 2 nd link 62, and is disposed at substantially the same height as the roller guide 7 fixed to the fixed base 2.

As shown in fig. 8(a), when the doors 104a and 104b are fully closed, the shaft portion 5a is surrounded by the 1 st notch 61a of the 1 st link 61 and the 2 nd notch 62a of the 2 nd link 62 in plan view. Specifically, the 1 st link 61 is held with the opening side of the 1 st notched portion 61a facing outward in the vehicle width direction; the 2 nd link 62 is held such that the opening side of the 2 nd notched portion 62a faces in the direction opposite to the direction toward the 1 st rotating shaft 63. Accordingly, the movement of the shaft portion 5a from the 1 st notch portion 61a of the 1 st link 61 to the outside is restricted by the 2 nd link 62.

In the fully closed state, the roller 65 of the 2 nd link 62 is positioned further outward in the vehicle width direction than the 2 nd notched portion 62a, and the 2 nd pivot 64 of the 2 nd link 62 is positioned further inward in the vehicle width direction than the 2 nd notched portion 62 a.

Further, a coil spring 67 (urging mechanism) is provided between the 1 st link 61 and the 2 nd link 62. One end of the coil spring 67 is provided at a substantially intermediate portion between the 2 nd turning shaft 64 of the 2 nd link 62 and the roller 65, and the other end is provided at a position close to the 1 st turning shaft 63 of the 1 st link 61. Accordingly, the 2 nd link 62 is urged by the coil spring 67 and tends to rotate in a direction (a direction indicated by an arrow Rb1 in fig. 8) in which the restriction of the shaft portion 5a is released. That is, the 2 nd link 62 is urged by the coil spring 67 so that the roller 65 approaches the roller guide 7.

The roller guide 7 includes: the inclined surface 71 of the guide roller 65 and the curved surface 72 of the guide roller 65 are continuous with the inclined surface 71.

The ramp 71 is the following plane: the vehicle is formed so as to be located further outward in the vehicle width direction in the opening direction of the door 104a (hereinafter referred to as the opening direction, indicated by arrow a1 in fig. 8). The roller guide 7 is fixed to the lower surface of the fixed base 2 so that a portion including the inclined surface 71 overlaps the recess 2a of the fixed base 2 in a plan view.

The curved surface 72 is the following curved surface: is bent substantially S-shaped continuously with the inclined surface 71 and extends inward in the vehicle width direction. The curved surface 72 projects in the opening direction at a position on the vehicle width direction outer side, and projects in the closing direction (direction opposite to the opening direction, indicated by arrow a2 in fig. 8) at a position on the vehicle width direction inner side.

The roller guide 7 is most protruded outward in the vehicle width direction at a portion where the inclined surface 71 and the curved surface 72 are continuous. Further, the roller guide 7 is provided on the fixed base 2 as follows: the most outward portion in the vehicle width direction is located at substantially the same position as the end surface of the fixed base 2, or located inward in the vehicle width direction from the end surface of the fixed base 2. That is, the roller guide 7 is provided so as not to protrude further outward in the vehicle width direction than the fixed base 2.

[ in relation to the rotor arm ]

As shown in fig. 1, an upper pivot arm 81 and a lower pivot arm 82 that pivot to guide the door in the vehicle width direction are provided on both upper and lower sides of the entrance 102. In the following description, since the drive mechanism of the swing arm on the vehicle front side and the drive mechanism of the swing arm on the vehicle rear side have a symmetrical structure, only the drive mechanism of the swing arm on the vehicle front side will be described, and the description of the drive mechanism of the swing arm on the vehicle rear side will be omitted.

As shown in fig. 1, the upper rotating arm 81 is fixed to a connecting shaft 83 extending substantially in the vertical direction. Further, upper and lower ends of the connecting shaft 83 are rotatably fixed to brackets extending from edges of the entrance 102.

As shown in fig. 2 and 4, a roller 84 is provided at the tip end of the upper swing arm 81 so as to be rotatable about a rotation shaft extending substantially vertically upward. Further, the door 104a is provided with an upper rail 85 extending in the vehicle front-rear direction. As shown in fig. 4, the upper rail 85 is provided with a groove that opens downward and extends in the vehicle longitudinal direction.

The roller 84 is inserted into a groove of the upper rail 85 from below, and is disposed movably along the upper rail 85.

As shown in fig. 4 and 5, a connecting rod 86 is provided between the upper turning arm 81 and the slide base 3. One end of the connection rod 86 is provided to the bracket 81a fixed to the middle portion in the longitudinal direction of the upper rotating arm 81 so as to be rotatable about a substantially vertical axis, and the other end is provided to the slide base 3 so as to be rotatable about a substantially vertical axis.

Next, the lower pivoting arm 82 provided below the doors 104a and 104b will be described. Fig. 9 is an enlarged schematic view of a portion near the lower swing arm 82 of the plug door apparatus 1 shown in fig. 1. Fig. 10 is a schematic cross-sectional view of the plug door device 1 shown in fig. 9 taken along line Y-Y.

As shown in fig. 9 and 10, a lower rotating arm 82 is fixed to a lower side of the coupling shaft 83. Therefore, when the upper rotating arm 81 rotates, the lower rotating arm 82 also rotates. Further, similarly to the structure of the upper side of the door 104a, a roller 87 rotatable about a rotation shaft extending substantially vertically upward is provided at the tip end of the lower swing arm 82. The roller 87 is inserted from below into a groove provided in a lower rail 88 of the door 104a so as to extend in the front-rear direction of the vehicle, and is movable along the lower rail 88.

[ concerning the operation of sliding plug door devices ]

The operation of the plug door device 1 will be described with reference to fig. 5 to 8.

< action when opening door >

As shown in fig. 5 and 8a, when the door is fully closed, the shaft portion 5a (schematically shown by hatching in fig. 5 to 8) is located in the recess 2a of the fixed base 2 in a plan view. The shaft portion 5a is engaged with both the 1 st notch portion 61a of the 1 st link 61 and the 2 nd notch portion 62a of the 2 nd link 62 (that is, the shaft portion is located in the notch portion).

The pinion gear 42c is rotated in the normal direction by driving a motor (not shown) of the door driving device 4, and a driving force in the opening direction acts on the pair of racks 42a and 42 b. The driving force in the opening direction is transmitted to the shaft portion 5a via the 1 st bracket 43a, the support rail 49, and the 2 nd bracket 44 a. That is, the shaft portion 5a tends to move in the opening direction (the direction of the arrow a1 in fig. 8) and biases the 2 nd link 62 in the same direction.

Here, as shown in fig. 8a, the rotation (rotation in the arrow Rb1 direction) of the 2 nd link 62 with respect to the 1 st link 61 is restricted at a position where the roller 65 abuts against the inclined surface 71 of the roller guide 7. Therefore, the 2 nd link 62 hardly rotates with respect to the 1 st link 61, and a rotational force (a rotational force in the direction of the arrow Ra 1) about the 1 st rotational shaft 63 is applied to the 1 st link 61 via the 2 nd rotational shaft 64. As a result, as shown in fig. 8(b), the roller 65 moves along the slope 71, and the 1 st link 61 rotates about the 1 st rotation shaft 63.

Fig. 8(b) shows a state in which the 1 st link 61 is rotated by a predetermined angle in the direction of arrow Ra1 and the roller 65 moves to the end of the slope 71. As shown in fig. 8(b), while the 1 st link 61 is rotated in the arrow Ra1 direction, the roller 65 of the 2 nd link 62 moves along the inclined surface 71 of the roller guide 7. At this time, the 2 nd link 62 is pulled toward the inclined surface 71 by the coil spring 67, so the roller 65 does not leave the inclined surface 71. In addition, in a plan view, the periphery of the shaft portion 5a is maintained in a state surrounded by the 1 st notched portion 61a of the 1 st link 61 and the 2 nd notched portion 62a of the 2 nd link 62.

When the shaft portion 5a is further moved in the opening direction from the state shown in fig. 8(b), the contact position of the roller 65 and the roller guide 7 moves from the inclined surface 71 to the curved surface 72. Accordingly, the roller 65 is drawn inward in the vehicle width direction along the curved surface 72, and the 2 nd link 62 rotates relative to the 1 st link 61 in the arrow Rb1 direction. That is, as shown in fig. 8(c), the 2 nd link 52 is released from the restriction of the shaft portion 5 a.

Here, in the fully closed state, the 1 st link 61 is disposed such that the 1 st notch 61a is located further outward in the vehicle width direction than the 1 st pivot 63. In the present embodiment, in a plan view, an angle (an angle represented by θ in fig. 8a) formed by a straight line connecting the center of the shaft portion 5a housed in the 1 st notch portion 61a and the center of the 1 st turning shaft 63 and a straight line passing through the 1 st turning shaft 63 and extending parallel to the vehicle longitudinal direction is in a range of 5 to 10 °.

In the fully closed state, the 2 nd link 62 is disposed such that the roller 65 is positioned on the vehicle width direction outer side with respect to the center of the shaft portion 5a, and the 2 nd pivot 64 is positioned on the vehicle width direction inner side with respect to the center of the shaft portion 5 a.

According to this configuration, the urging force from the shaft portion 5a can be used for the rotation of the 1 st link 61 with high efficiency.

As described above, when the 1 st link 61 rotates, a force toward the outside in the vehicle width direction acts on the shaft portion 5 a. Similarly, a force toward the outside in the vehicle width direction acts on the other shaft portion 5 b. Therefore, a force toward the outside in the vehicle width direction also acts on the door drive device 4 connected to the shaft portion 5a and the shaft portion 5b, and a force toward the outside in the vehicle width direction also acts on the slide base 3 to which the door drive device 4 is fixed.

Accordingly, the door drive device 4 and the slide base 3 are guided by the linear guide 31 and move outward in the vehicle width direction. As a result, as shown in fig. 6, the doors 104a and 104b are moved outward in the vehicle width direction and in the opening direction.

Thereafter, as shown in fig. 7, the shaft portion 5a is linearly moved in the opening direction by the driving of the door driving device 4 without receiving a force in the vehicle width direction from the guide portion 6 a. That is, the door 104a moves linearly in the opening direction up to the fully opened position.

At this time, the shaft portion 5a moves along the peripheral edge portion of the fixed base 2 extending in the vehicle front-rear direction. Therefore, even if an external force directed inward in the vehicle width direction is applied to the door 104a, the shaft portion 5a abuts against the peripheral edge portion of the fixed base 2, and the slide base 3 is not pushed inward in the vehicle width direction.

Further, the shaft portion 5a moves along the groove 32a of the slide base 3. Therefore, even if an external force directed outward in the vehicle width direction is applied to the door 104a, the movement of the shaft portion 5a outward in the vehicle width direction is restricted by the edge of the groove 32a, and thus excessive swinging of the door outward in the vehicle width direction can be suppressed. Further, since the movement of the slide base 3 toward the outside in the vehicle width direction is restricted by the stopper 22, the slide base 3 is not moved by an external force toward the outside in the vehicle width direction. Similarly, the shaft portion 5b is restricted from moving in the vehicle width direction by the groove 32 b.

< action when closing door >

When the door is closed, the operation is performed in reverse to the opening operation of the door.

That is, the motor (not shown) of the door driving device 4 is driven to rotate the pinion gear 42c in the reverse direction, and a driving force in the closing direction acts on the pair of racks 42a and 42 b. This driving force in the closing direction is transmitted to the shaft portion 5a, and the shaft portion 5a moves linearly in the closing direction (the direction of arrow a2 in fig. 8) toward the guide portion 6 a.

Here, in the state where the door is opened, as shown in fig. 8(c), a rotational force in the direction of Rb1 acts on the 2 nd link 62 by the coil spring 67. That is, the pulling force from the coil spring 67 acts on the 2 nd link 62 to position the roller 65 on the curved surface 72 of the roller guide 7. In the present embodiment, roller 65 enters concave portion 72a of curved surface 72, and concave portion 72a has an arc shape substantially the same as the outer peripheral shape of roller 65. Therefore, the 1 st link 61 and the 2 nd link 62 are stably held at the predetermined positions. Specifically, the 2 nd link 62 is held at the following position: the shaft portion 5a linearly moved in the closing direction can abut against the inner edge of the 2 nd notch portion 62 a. Further, the 1 st link 61 is held at the following position: the shaft portion 5a linearly moved in the closing direction can be accommodated in the 1 st notch portion 61 a.

Therefore, when the predetermined amount of movement is performed in the closing direction from the fully open position, the shaft portion 5a abuts against the inner edge (see fig. 8(c)) of the 2 nd notched portion 62a of the 2 nd link 62 to bias the 2 nd link 62. At this time, the 2 nd link 62 rotates in the direction of the arrow Rb2 against the force of the coil spring 67, and therefore does not hinder the linear movement of the shaft portion 5a in the closing direction. As the 2 nd link 62 rotates, the roller 65 moves along the curved surface 72 of the roller guide 7. When the 2 nd link 62 rotates, the 1 st link 61 is held at the predetermined position or its vicinity almost without rotating.

Then, the shaft portion 5a moves in the closing direction to a position abutting against the inner edge of the 1 st notch portion 61a of the 1 st link 61, and biases the 1 st link 61 in the closing direction. Accordingly, the 1 st link 61 rotates in the arrow Ra2 direction, and the shaft portion 5a is guided inward in the vehicle width direction. That is, the shaft portion 5a is guided into the recess 2a of the fixed base 2.

The door 104a moves similarly to the shaft portion 5 a. That is, the door 104a moves linearly from the fully open position toward the closed position, and is drawn inward in the vehicle width direction and moved toward the fully closed position in the vicinity of the fully closed position. The door 104b also performs a closing operation similar to that of the door 104 a.

[ operation of a rotating arm when opening and closing a vehicle door ]

The operation of the swing arm when the door is opened and closed will be described below.

As described above, when the door starts moving from the fully closed position in the opening direction, the slide base 3 moves outward in the vehicle width direction. Accordingly, as shown in fig. 5 and 6, the connecting rod 86 having one end connected to the slide base 3 also moves outward in the vehicle width direction, and pushes and biases the upper swing arm 81 outward in the vehicle width direction. The upper rotating arm 81 urged by the connecting rod 86 rotates while applying a force directed outward in the vehicle width direction to the vicinity of the door end side end portion of the door 104a via the upper rail 85 (see fig. 4).

Further, by the rotation of the upper rotating arm 81, the lower rotating arm 82 is also rotated in the same direction via the coupling shaft 83. That is, the lower swing arm 82 swings while applying a force toward the outside in the vehicle width direction to the vicinity of the door-rear-side end portion of the door 104a via the lower rail 88.

Accordingly, the door 104a is biased outward in the vehicle width direction in the vicinity of the upper end portion and the vicinity of the lower end portion in the vicinity of the door tail side end portion, and moves outward in the vehicle width direction.

When the door is closed, the slide base 3 moves inward in the vehicle width direction near the fully closed position as described above. Accordingly, the connecting rod 86 having one end connected to the slide base 3 also moves inward in the vehicle width direction to pull in and bias the upper rotating arm 81 inward in the vehicle width direction. The upper rotating arm 81 urged by the connecting rod 86 rotates while applying a drawing force toward the inside in the vehicle width direction to the vicinity of the door-rear-side end portion of the door 104a via the upper rail 85.

Further, by the rotation of the upper swing arm 81, the lower swing arm 82 is also rotated in the same direction via the connecting shaft 83, and a biasing force toward the inside in the vehicle width direction is applied to the vicinity of the door end side end portion of the lower end vicinity portion of the door 104a via the lower rail 88.

Accordingly, the door 104a is biased inward in the vehicle width direction in the vicinity of the upper end portion and the vicinity of the lower end portion in the vicinity of the door tail side end portion, and moves inward in the vehicle width direction.

In the opening operation and the closing operation, the roller 84 provided at the tip end of the upper swing arm 81 and the roller provided at the tip end of the lower swing arm 82 roll along the upper rail 85 and the lower rail in accordance with the movement of the door 104a in the opening and closing direction, respectively, and move relative to the door 104 a.

[ regarding locking action ]

As shown in fig. 2, the present embodiment includes a lock mechanism 90 that engages with the lock shaft portions 91a and 91b to lock the 1 st brackets 43a and 43b in the opening direction (i.e., the doors 104a and 104b in the opening direction) when the doors are fully closed. The lock mechanism 90 is provided in the main body 41 of the door drive device 4 and is switchable between a locked state and an unlocked state as described below.

An output shaft of a motor (not shown) provided in the door driving device 4 can transmit a driving force to the pinion gear 42c and the lock mechanism 90 via the planetary gear mechanism G.

The planetary gear mechanism G includes a sun gear G1 rotatably supported by a shaft, a plurality of planetary gears G2 disposed on the outer periphery of the sun gear G1 and capable of rotating and revolving while meshing with the sun gear G1, an internal gear G3 having internal teeth meshing with the planetary gears G2 on the outer side of the planetary gears G2, and a carrier C rotatably supporting the planetary gears G2. The sun gear G1, the ring gear G3, and the carrier C are arranged so that their axes of rotation coincide with each other and are each arranged so as to be rotatable relative to the other members. The rotational axes of the three elements also coincide with the rotational axis of the pinion 42c of the rack-and-pinion mechanism.

The sun gear G1 is coupled to an output shaft of the motor. Further, the coupling may be appropriately performed via a speed reduction mechanism.

The ring gear G3 is coupled to the pinion gear 42c via bolts or the like, not shown.

The bracket C is coupled to the lock mechanism 90. Further, a predetermined biasing force is applied to the carrier C, and the rotation of the carrier C accompanying the revolution of the planetary gear C2 can be suppressed when the door is closed.

According to this structure, the bracket C does not rotate until the door reaches the fully closed position during the closing operation in general. When the door reaches the fully closed position, the door cannot move in the closing direction, and therefore the rotation of the ring gear G3 is also prevented. Thus, the driving force of the motor is transmitted to the bracket C. Accordingly, the holder C rotates against the predetermined biasing force, and the lock mechanism 90 moves to the locked state.

On the other hand, when the door is moved from the fully closed position in the opening direction and starts to move in the opening direction, the lock mechanism 90 in the locked state prevents the movement of the lock shaft portions 91a and 91 b. So that the rotation of the internal gear G3 can be prevented. Therefore, the holder C rotates in the direction opposite to the rotation direction in the closing operation. Thereby, the lock mechanism 90 moves to the unlocked state. Here, the holder C is configured to be restricted from rotating at a position rotated by a predetermined angle. Therefore, after the rotation of the carrier C is restricted, the driving force of the motor is transmitted to the ring gear G3, and the door moves in the opening direction.

The lock mechanism 90 may be configured to be capable of restricting the movement of the lock shaft portions 91a and 91b in the opening direction in conjunction with the rotation of the bracket C when the door is at the fully closed position, and to be capable of releasing the restriction by the reverse rotation of the bracket C. For example, known lock mechanisms described in patent documents 2 and 3 can be used.

As described above, the plug door device 1 according to the present embodiment includes: a fixed base 2 fixed to the frame 103, a slide base 3 provided on the fixed base 2 so as to be movable in the vehicle width direction, a door driving device 4 provided on the slide base 3 and moving the doors 104a and 104b in the vehicle front-rear direction via the 1 st brackets 43a and 43b, shaft portions 5a and 5b fixed to the 1 st brackets 43a and 43b, and guide portions 6a and 6b, the guide portions 6a and 6b are rotatably provided on the fixed base 2, and when the doors 104a and 104b are opened, the shaft portions 5a, 5b are guided by rotating while being in contact with the shaft portions 5a, 5b so that the shaft portions 5a, 5b move outward in the vehicle width direction, when the doors 104a and 104b are closed, the shaft portions 5a and 5b are guided so that the shaft portions 5a and 5b move inward in the vehicle width direction by rotating while coming into contact with the shaft portions 5a and 5 b.

According to this structure, the guide portions 6a and 6b guide the shaft portions 5a and 5b in the vehicle width direction by abutting against the shaft portions 5a and 5b and rotating. Therefore, the guide portions 6a and 6b operate to follow the movement of the doors 104a and 104b in the vehicle width direction. Accordingly, in a state where the doors 104a and 104b are drawn inward in the vehicle width direction, the guide portions 6a and 6b can be prevented from being excessively protruded outward in the vehicle width direction. Therefore, the space occupied by the guide portions 6a, 6b can be further reduced. As a result, the door drive device 4 that applies a force in the vehicle longitudinal direction to the doors 104a and 104b can perform the opening and closing operation and the plugging operation, and the plugging door device 1 can be formed in a small size.

The present invention is not limited to the structure in which the door is drawn inward in the vehicle width direction and is closely attached to the peripheral edge portion of the entrance during the closing operation, and may be a structure in which the door is pushed outward in the vehicle width direction and is closely attached to the peripheral edge portion of the entrance during the closing operation.

The slide base 3 is disposed below the fixed base 2, and the guide portions 6a and 6b are disposed above the slide base.

According to this configuration, the slide base 3 and the guide portions 6a and 6b provided to be relatively movable with respect to the fixed base 2 can be provided closer to the fixed base 2. Thereby enabling the entire device to be miniaturized.

That is, if both the slide base 3 and the guide portions 6a and 6b are provided on one side of the fixed base 2, the slide base 3 and the guide portions 6a and 6b must be arranged at appropriate positions so as not to interfere with each other during movement. In this case, a useless space is easily generated. In view of this, since the slide base 3 and the guide portions 6a and 6b are disposed separately from each other in the vertical direction of the fixed base 2, the problem of interference with each other is not considered, and the space required for the disposition does not become excessively large.

Further, since the slide base 3 and the guide portions 6a, 6b can be disposed closer to the fixed base 2, the connection of the slide base 3 and the guide portions 6a, 6b to the fixed base 2 becomes stable. Therefore, the movement of the slide base 3 and the guides 6a and 6b can be stabilized.

Further, the guide portion may be disposed on the upper side of the fixed base 2, and the slide base may be disposed on the lower side.

The guide portion 6a (the same applies to the guide portion 6 b) further includes: a1 st link 61 rotatably provided on the fixed base 2, a2 nd link 62 rotatably provided on the 1 st link 61 and provided with a roller 65, and a roller guide 7 fixed to the fixed base 2 and guiding the roller 65.

When the door is opened, the 1 st link 61 receives a force from the shaft portion 5a via the 2 nd link 62, and rotates by a predetermined angle so that the shaft portion 5a moves outward in the vehicle width direction. The roller guide 7 guides the roller 65 while the 1 st link 61 is rotated by a predetermined angle to maintain the state in which the 2 nd link 62 is in contact with the shaft portion 5a, and guides the roller 65 to prevent the 2 nd link 62 from interfering with the movement of the shaft portion 5a after the 1 st link 61 is rotated by the predetermined angle.

When the door is closed, the 1 st link 61 is rotated by a force from the shaft portion 5a so that the shaft portion 5a moves inward in the vehicle width direction.

According to this structure, the guide portion 6a can be realized by a simple structure, and the guide portion 6a can guide the shaft portion 5a to the outside in the vehicle width direction when the door is opened and can guide the shaft portion 5a to the inside in the vehicle width direction when the door is closed.

Further, a coil spring 67 is provided between the 1 st link 61 and the 2 nd link 62, and biases the 2 nd link 62 to bring the roller 65 close to the roller guide 7.

According to this configuration, since the roller 65 is urged toward the roller guide 7 side, the roller 65 can be prevented from being separated from the roller guide 7. Thereby enabling the roller 65 to be moved along the roller guide 7 more reliably.

Further, the 1 st link 61 and the 2 nd link 6 can be held at predetermined positions by the elastic force of the coil spring 67. That is, the 1 st link 61 and the 2 nd link 6 can be held in the following states: the opening sides of the notches 61a and 61b are extended outward in the width direction from the fixed base 2, and the opening sides of the notches 61a and 61b are directed in the opening direction (the state shown in fig. 8 c).

Therefore, during the closing operation, the shaft portion 5a can be reliably guided into the notches 61a and 61b of the 1 st link 61 and the 2 nd link 6.

The 2 nd link is not limited to the case of biasing by using a coil spring, and other elastic members may be used, or a structure in which biasing is performed by using a magnetic force or the like may be used.

The slide base 3 has grooves 32a, 32b extending in the front-rear direction of the vehicle, and the shaft portions 5a, 5b are inserted into the grooves 32a, 32b and move along the grooves 32a, 32b when the doors 104a, 104b are opened and closed.

According to this structure, the movement of the shaft portions 5a, 5b in the vehicle width direction can be restricted by the edge portions of the grooves 32a, 32 b. Therefore, even when a force in the vehicle width direction acts on the doors 104a and 104b, the doors 104a and 104b can be reliably held within the predetermined range in the vehicle width direction.

Further, the 1 st brackets 43a, 43b for transmitting the driving force of the door driving device 4 to the doors are coupled to the doors 104a, 104b via double speed rails 45a, 45 b. Therefore, the 1 st brackets 43a and 43b are moved by a predetermined distance by the door driving device 4, and the doors 104a and 104b can be moved by a distance which is a multiple of the predetermined distance. Therefore, the space required for moving the 1 st brackets 43a, 43b, the 2 nd brackets 44a, 44b interlocking with them, the shaft portions 5a, 5b, and the like can be reduced.

Further, since the slide base 3 is held movably in the vehicle width direction by the three linear guides 31 provided on the fixed base 2, the connection between the slide base 3 and the fixed base 2 is stable. Thereby preventing deformation of the slide base 3. And the slide base 3 can be easily stably linearly pushed in the vehicle width direction.

Further, the door driving device 4 includes: a rack and pinion mechanism including racks 42a, 42b and a pinion 42c for moving the 1 st carriers 43a, 43b, and a planetary gear mechanism G for distributing a rotational driving force from a motor of a driving source to the rack and pinion mechanism.

Further, a lock mechanism 90 for locking the movement of the doors 104a, 104b is provided.

The planetary gear mechanism G is configured to distribute a rotational driving force from a motor to the rack and pinion mechanism and the lock mechanism 90.

According to this structure, the door driving device 4 having a motor as a driving source can perform an opening and closing operation, a plugging operation, and a locking operation for locking the movement of the door.

The plug door device 1 according to the present embodiment includes an upper rotary arm 81 and a lower rotary arm 82, and the upper rotary arm 81 and the lower rotary arm 82 are connected to both upper and lower sides of the entrance 102 so as to be rotatable about vertically extending shafts, and are connected to the doors 104a and 104b that open and close.

The upper rotating arm 81 is connected to the slide base 3 via a connecting rod 86 so as to rotate in accordance with the movement of the slide base 3. The lower rotating arm 82 is coupled to the upper rotating arm 81 via a coupling shaft 83, and rotates in accordance with the movement of the slide base 3.

According to this structure, since the upper swing arm 81 is connected to the slide base 3 via the connecting rod 86, the driving force from the door driving device 4 can be transmitted without passing through the doors 104a and 104 b. That is, the upper swing arm 81 can be reliably swung without imparting excessive rigidity to the doors 104a and 104 b.

The lower rotating arm 82 is connected to the slide base 3 via a connecting rod 86, an upper rotating arm 81, and a connecting shaft 83. Therefore, the lower swing arm 82 can be reliably swung by moving the slide base 3.

The first brackets 43a and 43b of the door drive device 4 may be directly fixed to the doors 104a and 104b, not limited to the case where the door drive device 4 and the doors 104a and 104b are coupled using the double speed rails 45a and 45 b. In this case, the amount of movement of the racks 42a and 42b of the door driving device 4 is doubled as compared with the case of using the double speed rail, but it can be realized by a simple structure. Even if the 1 st brackets 43a, 43b and the like are fixed to the door heads of the doors 104a, 104b, the upper pivot arm 81 and the lower pivot arm 82 can be reliably pivoted. Therefore, the components of the door driving device 4, the 1 st brackets 43a, 43b, the 2 nd brackets 44a, 44b, and the like can be arranged in a narrower range near the center of the entrance 102 in the front-rear direction of the vehicle. As a result, the plug door device can be miniaturized.

Further, since the upper pivot arm 81 and the lower pivot arm 82 are fixed to the same coupling shaft 83, the lower pivot arm 82 can be reliably pivoted by pivoting the upper pivot arm 81 by the urging force from the slide base 3.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and can be implemented by being variously modified within the scope described in the claims.

For example, the following modifications can be adopted.

The present invention is not limited to the case where the guide portions 6a and 6b for guiding the shaft portions 5a and 5b by rotation are provided. As shown in fig. 11, a structure having a stopper mechanism for guiding the shaft portions 5a and 5b by a guide groove 221 provided in the fixed base 220 may be employed.

The guide groove 221 includes a parallel groove portion 221a formed parallel to the front-rear direction of the vehicle, and an inclined groove portion 221b formed continuously to the parallel groove portion 221a and inclined with respect to the vehicle side wall.

According to this structure, during the opening operation, the shaft portions 5a and 5b are guided by the inclined groove portion 221b to push out the slide base 230 and the door drive device 240 outward in the vehicle width direction, and as a result, the doors 104a and 104b move in the opening direction while being pushed outward in the vehicle width direction. At this time, the upper rotating arm 81 is urged by the slide base 230 via the connecting rod 86, and is reliably rotated by a predetermined angle so as to extend outward in the vehicle width direction.

On the other hand, when the closing operation is performed, the shaft portions 5a and 5b at the fully open position are guided by the parallel groove portions 203a to move, and are guided by the inclined groove portions 221b to be drawn inward in the vehicle width direction in the vicinity of the fully closed position. Accordingly, the slide base 230 and the door drive device 240 are drawn inward in the vehicle width direction, and as a result, the doors 104a and 104b move in the closing direction while being drawn inward in the vehicle width direction. At this time, the upper rotating arm 81 is urged by the slide base 230 via the connecting rod 86, and is reliably rotated by a predetermined angle so as to be drawn inward in the vehicle width direction.

Claims (1)

1. A plug door device is provided with:

a fixed base fixed to a body of a vehicle;

a slide base provided on the fixed base so as to be movable in a width direction of the vehicle;

a door driving device provided on the slide base and moving a door in a front-rear direction of the vehicle via a connection portion;

a shaft portion provided to the connection portion;

and a guide portion provided rotatably on the fixed base, the guide portion being configured to guide the shaft portion so that the shaft portion moves toward one side in the width direction of the vehicle by rotating while abutting against the shaft portion when the door is opened, and to guide the shaft portion so that the shaft portion moves toward the other side in the width direction of the vehicle by rotating while abutting against the shaft portion when the door is closed.

2. A plug door apparatus according to claim 1,

the slide base is disposed on either the upper or lower side of the fixed base, and the guide portion is disposed on the other side.

3. Plug door arrangement according to claim 1 or 2,

the guide part has: a1 st link rotatably provided on the fixed base, a2 nd link rotatably provided on the 1 st link and provided with a roller portion,

further comprises a roller guide fixed on the fixed base and guiding the roller part,

(a) when the vehicle door is opened,

the 1 st link supports a force from the shaft portion via the 2 nd link, rotates by a predetermined angle so that the shaft portion moves in one of the width directions of the vehicle,

the roller guide guides the roller portion to maintain the state in which the 2 nd link is in contact with the shaft portion while the 1 st link is rotated by the predetermined angle, and guides the roller portion to prevent the 2 nd link from interfering with the movement of the shaft portion after the 1 st link is rotated by the predetermined angle,

(b) when the vehicle door is closed,

the 1 st link is rotated by receiving a force from the shaft portion so that the shaft portion moves toward the other side in the width direction of the vehicle.

4. A plug door apparatus according to claim 3,

and a biasing mechanism provided between the 1 st link and the 2 nd link and biasing the 2 nd link so that the roller portion approaches the roller guide.

5. Plug door arrangement according to claim 1 or 2,

the slide base has a groove portion extending in the front-rear direction of the vehicle,

the shaft portion is inserted into the groove portion and moves along the groove portion when the door is opened and closed.

6. Plug door arrangement according to claim 1 or 2,

comprises a speed doubling rail formed by arranging a pinion between two opposite racks,

the two racks are provided to extend in the front-rear direction of the vehicle, one of the racks is connected to the slide base, and the other rack is connected to the door,

the pinion is connected to the connecting portion.

7. Plug door arrangement according to claim 1 or 2,

the slide base is held movably in the width direction of the vehicle by a plurality of linear guides provided on the fixed base.

8. Plug door arrangement according to claim 1 or 2,

the door drive device includes: a rack and pinion mechanism for moving the coupling portion, and a planetary gear mechanism for distributing a rotational driving force from a driving source to the rack and pinion mechanism.

9. Plug door arrangement according to claim 1 or 2,

a swing arm connected to the vehicle body so as to be pivotable about a vertically extending shaft and connected to the door for opening and closing movement,

the rotating arm is connected to the slide base so as to rotate in accordance with the movement of the slide base.

10. A plug door apparatus according to claim 9,

the swing arm includes an upper swing arm connected to an upper portion of the door and a lower swing arm connected to a lower portion of the door,

the rotating shaft of the upper rotating arm is connected to the rotating shaft of the lower rotating arm.