Plug door device and swing arm mechanism

Abstract

To provide a plug door device with the reduced number of components.SOLUTION: A plug door device in the embodiment comprises: a fixed base fixed to a vehicle body of a vehicle; a slide base provided at the fixed base movable in a width direction of the vehicle to the fixed base; a door drive mechanism provided at the slide base and moving a door 2 to open / close an entrance of the vehicle in a longitudinal direction of the vehicle; and a swing arm mechanism 50 guiding a movement of the door 2 in the width direction of the vehicle and in the longitudinal direction of the vehicle and interlocking and moving an upper part of the door 2 and a lower part of the door 2. The swing arm mechanism 50 comprises: a pillar part 51 extending in a height direction of the vehicle; a support part 52 rotatably supporting the pillar part 51 with a longitudinal direction of the pillar part 51 as a center of rotation; and a fixed part 53 engaged with the support part 52 and fixing the pillar part 51 to the vehicle body of the vehicle. The support part 52 has an engagement part 71 engageable with the fixed part 53 at different engagement positions in the longitudinal direction of the pillar part 51.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a plug door device and a swing arm mechanism. [Background technology]

[0002] Conventionally, there is known a plug door device that performs a so-called plug operation, which is an operation in which a door moves in the width direction while moving in the front-rear direction of a railway vehicle. For example, Patent Document 1 discloses a swing arm mechanism that moves the upper and lower parts of the door in conjunction with each other. On the other hand, a configuration is known in which a height adjustment mechanism is provided separately from the swing arm mechanism to adjust the height of a pillar that constitutes the swing arm mechanism. For example, the height adjustment mechanism is configured such that part of the pillar has a male thread structure and a double nut is provided. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] China Utility Model Publication No. 201687303 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a height adjustment mechanism is separately provided in the swing arm mechanism, the number of parts increases, leaving room for improvement in terms of reducing the number of parts.

[0005] The present invention has been made to solve the above-mentioned problems, and has an object to provide a plug door device and a swing arm mechanism that can reduce the number of parts. [Means for solving the problem]

[0006] As a means for solving the above problems, the present invention has the following configuration. (1) A plug door device according to an embodiment of the present invention comprises a fixed base fixed to a vehicle body, a slide base provided on the fixed base so as to be movable in the width direction of the vehicle relative to the fixed base, a door drive mechanism provided on the slide base for moving a door that opens and closes the boarding and alighting entrance of the vehicle in the fore-and-aft direction of the vehicle, and a swing arm mechanism for guiding the movement of the door in the width direction of the vehicle and in the fore-and-aft direction of the vehicle and moving an upper part of the door and a lower part of the door in conjunction with each other, wherein the swing arm mechanism comprises a pillar portion extending in the height direction of the vehicle, a support portion for rotatably supporting the pillar portion around the longitudinal direction of the pillar portion as a center of rotation, and a fixed portion for engaging with the support portion to fix the pillar portion to the vehicle body, and the support portion has an engaging portion capable of engaging with the fixed portion at different engaging positions in the longitudinal direction.

[0007] According to this configuration, the position of the pillar part in the vehicle height direction (height of the pillar part) can be adjusted by changing the meshing position of the support part relative to the fixed part. Therefore, it is not necessary to provide a separate adjustment mechanism for adjusting the height of the pillar part in the pillar part. In other words, no parts other than the support part are required to adjust the height of the pillar part. Therefore, the number of parts can be reduced.

[0008] (2) In the plug door device described in (1) above, the support portion may be cylindrical, and the interlocking portion may be provided on an outer peripheral surface parallel to the longitudinal direction of the support portion.

[0009] (3) In the plug door device described in (2) above, the support portion may include a bearing having an inner ring, an outer ring, and rolling elements that roll between the inner ring and the outer ring, and the cylindrical holder that supports the bearing, wherein the pillar portion is fixed to the inner ring, the inner periphery of the holder is fixed to the outer ring, and the interlocking portion is provided on the outer periphery of the holder.

[0010] (4) In the plug door device described in (2) or (3) above, the support portion may have an adjustment groove at a position different from the engagement portion on the outer surface of the support portion, into which a tool can be inserted to rotate the support portion.

[0011] (5) In the plug door device described in (4) above, the fixing portion is cylindrical and covers the support portion, the support portion has a protruding portion protruding from one end or the other end of the fixing portion, and the adjustment groove may be provided in at least the protruding portion.

[0012] (6) In the plug door device described in any one of (2) to (5) above, the support portion has an adjustment groove at a position on the outer surface of the support portion different from the engagement portion, into which a tool can be inserted to rotate the support portion, and a through hole is formed in the fixing portion, and the support portion may further have a positioning member that fits into the adjustment groove via the through hole to determine the engagement position.

[0013] (7) In the plug door device described in any one of (2) to (6) above, the pillar portion includes an inner pipe portion and an outer pipe portion that houses the inner pipe portion, and each of the inner pipe portion and the outer pipe portion may be formed with either a convex portion extending in the longitudinal direction of the pillar portion or a concave portion into which the convex portion fits in an overlapping area between the inner pipe portion and the outer pipe portion.

[0014] (8) The plug door device described in any one of (1) to (7) above further includes a connecting portion that connects a lower portion of the door and the pillar portion, the connecting portion including a first arm that extends to connect the lower portion of the door and a first shaft portion parallel to a longitudinal direction of the pillar portion and is rotatable around the first shaft portion, a second arm that extends to connect a second shaft portion parallel to the first shaft portion and the first shaft portion and is rotatable around the first shaft portion and the second shaft portion, and a second arm that connects the second shaft portion and the pillar portion. and a third arm extending to connect the second shaft portion and the pillar portion and rotatable around the second shaft portion and the pillar portion, the third arm being movable to a dead point at which movement of the door in the width direction can be limited, the connecting portion being configured to transmit an external force acting on the door to the pillar portion when the third arm is at the dead point, and the support portion may include a bearing that rotatably supports the pillar portion, and a holder that supports the bearing and is capable of receiving the external force.

[0015] (9) In the plug door device described in any one of (1) to (8) above, the pillar portion may have a joint portion that is rotatable around the connection point with the pillar portion, at a position vertically lower than an upper connecting portion that connects the upper part of the door and the pillar portion and vertically higher than a lower connecting portion that connects the lower part of the door and the pillar portion.

[0016] (10) In the plug door device described in any one of (1) to (9) above, the interlocking portion may be one of the threaded portions of a male thread or a female thread, and the fixing portion may have the other of the threaded portions of the female thread or the male thread, and the one threaded portion may be capable of interlocking with the other threaded portion at a different interlocking position in the longitudinal direction of the pillar portion.

[0017] (11) A swing arm mechanism according to one aspect of the present invention is a swing arm mechanism that guides the movement of a door, which opens and closes the boarding and alighting entrance of a vehicle, in the width direction of the vehicle and the fore-and-aft direction of the vehicle, and moves an upper part of the door and a lower part of the door in conjunction with each other, and includes a pillar portion extending in the height direction of the vehicle, a support portion that rotatably supports the pillar portion around the longitudinal direction of the pillar portion as a center of rotation, and a fixing portion that engages with the support portion to fix the pillar portion to the body of the vehicle, and the support portion has an engaging portion that is capable of engaging with the fixing portion at different engaging positions in the longitudinal direction.

[0018] According to this configuration, the position of the pillar part in the vehicle height direction (height of the pillar part) can be adjusted by changing the meshing position of the support part relative to the fixed part. Therefore, it is not necessary to provide a separate adjustment mechanism for adjusting the height of the pillar part in the pillar part. In other words, no parts other than the support part are required to adjust the height of the pillar part. Therefore, the number of parts can be reduced. Effect of the Invention

[0019] According to the present invention, it is possible to provide a plug door device and a swing arm mechanism that can reduce the number of parts. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a front view of the plug door device according to the embodiment. [Diagram 2] FIG. 2 is a perspective view of the periphery including the upper part of the swing arm mechanism according to the embodiment. [Diagram 3] FIG. 2 is a perspective view of the periphery including a lower portion of the swing arm mechanism according to the embodiment. [Figure 4] FIG. 2 is a perspective view of one side of the swing arm mechanism in the front-rear direction according to the embodiment. [Diagram 5] FIG. 2 is a perspective view of the periphery including a lower connecting portion of the swing arm mechanism according to the embodiment. [Figure 6] 1 is a perspective view of the lower connecting portion of the embodiment, including a cross section taken along the XZ plane, and its surroundings. FIG. [Figure 7] 1 is a diagram including a cross section of a support part and a fixing part of an embodiment taken along an XY plane. [Figure 8] 1 is a view including a cross section of an inner tube portion and an outer tube portion of a pillar portion of an embodiment taken along an XZ plane. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiment, an example will be described in which a pair of doors that open and close the entrance and exit of a railway vehicle (car) are provided as a plug door device. In the following description, expressions indicating relative or absolute arrangements, such as "parallel," "orthogonal," "center," and "coaxial," do not only mean such arrangements strictly, but also include a state in which the components are relatively displaced with a tolerance or an angle or distance that provides the same function. In the drawings used in the following description, the scale of each component has been appropriately changed to make each component recognizable in size.

[0022] Fig. 1 is a front view of a plug door device according to an embodiment, and Fig. 2 is a perspective view of the periphery including the upper part of a swing arm mechanism according to an embodiment. As shown in Fig. 1, the plug door device 1 includes a pair of doors 2, a fixed base 3, a slide base 4, a door drive mechanism 30, and a swing arm mechanism 50. Note that Figs. 1 and 2 each show a state in which the door 2 is located in a fully closed position.

[0023] In the following explanation, an X, Y, Z Cartesian coordinate system is used as necessary. The X direction coincides with the front-to-rear direction of the vehicle. The Y direction coincides with the width direction of the vehicle. The Z direction indicates the height direction of the vehicle (gravity direction) perpendicular to the X and Y directions. In the following explanation, of the X, Y, and Z directions, the arrow side in the figure is the plus (+) side, and the opposite side to the arrow is the minus (-) side. The +Y side corresponds to the outer side in the width direction, and the -Y side corresponds to the inner side in the width direction. The +Z side corresponds to the upper side in the gravity direction, and the -Z side corresponds to the lower side in the gravity direction.

[0024] The plug door device 1 supports the door 2 so that, when the door 2 is in a fully closed position, the outer surface of the vehicle body side wall and the outer surface of the door 2 are flush with each other. The door 2 includes a door leaf 10 and a door hanger 11 connected to the door leaf 10. The door 2 is attached to a slide base 4. The door hanger 11 is supported by the slide base 4 in a state in which it is movable in the front-rear direction relative to the slide base 4.

[0025] The fixed base 3 is fixed to the body of the vehicle. The body is a frame that forms the skeleton of the vehicle. The fixed base 3 is provided above the boarding / alighting entrance 15 of the vehicle. The fixed base 3 extends in the front-rear direction so as to straddle the upper edge of the boarding / alighting entrance 15. A rail base 9 extending in the width direction is connected to each of both ends of the fixed base 3 in the front-rear direction.

[0026] The slide base 4 is provided on the fixed base 3. The slide base 4 slides in the width direction relative to the fixed base 3 by a driving force from a driving source (e.g., a motor) not shown, thereby moving the door 2 in the width direction. For example, the output shaft of the motor is rotatable in one direction and the other direction about the output shaft (forward and reverse rotation is possible). The slide base 4 is provided below the fixed base 3. The slide base 4 extends in the front-rear direction along the upper edge of the boarding / alighting opening 15. Both front-rear ends of the slide base 4 are movable in the width direction along the rail base 9.

[0027] The door drive mechanism 30 is provided on the slide base 4. The door drive mechanism 30 moves the door 2, which opens and closes the entrance 15 of the vehicle, in the front-rear direction of the vehicle. As shown in FIG. 2, the door drive mechanism 30 includes a motor output shaft 31 that transmits driving force from a drive source (not shown), and an endless belt 32 that extends along the front-rear direction. The motor output shaft 31 includes a gear 33 that rotates about an axis along the height direction. A pulley 34 is provided at a position spaced from the gear 33 in the front-rear direction, the pulley 34 being rotatable about an axis (axis along the height direction) parallel to the rotation axis of the gear 33.

[0028] The belt 32 is stretched across a gear 33 and a pulley 34. The belt 32 moves (circulates) around the gear 33 and the pulley 34 in conjunction with the rotation of the gear 33. The door hanger 11 is connected to the belt 32. The door hanger 11 moves in the front-rear direction together with the movement of the belt 32. An example of the operation of moving the door in the width direction while moving it in the front-rear direction, that is, the so-called plug operation, will be described below.

[0029] Of the pair of doors 2, the -X side door 2 is connected to the -Y side portion of the belt 32 via the door hanger 11. In contrast, the +X side door 2 is connected to the +Y side portion of the belt 32 via the door hanger 11. As described above, the belt 32 is stretched across the gear 33 and the pulley 34 that are spaced apart from each other in the front-rear direction, so the -Y side portion and the +Y side portion of the belt 32 move in opposite directions to each other in the front-rear direction. Therefore, when the belt 32 moves, the -X side door 2 and the +X side door 2 move in opposite directions to each other in the front-rear direction.

[0030] The pair of doors 2 move from the fully closed position shown in Fig. 2 (where the outer surface of the vehicle body side wall and the outer surface of the door 2 are flush) to the fully open position as a result of a driving force from a driving source (not shown) being transmitted to the belt 32, and the door hanger 11 connected to the belt 32 moving. In the example of Fig. 2, the door 2 on the -X side first moves outward in the width direction (specifically, diagonally including the width direction) from the fully closed position, and then moves straight in the -X direction to reach the fully open position. On the other hand, the door 2 on the +X side first moves outward in the width direction (specifically, diagonally including the width direction) from the fully closed position, and then moves straight in the +X direction to reach the fully open position.

[0031] The door drive system is not limited to the so-called belt system in which the door drive mechanism 30 is equipped with the above-mentioned belt 32. For example, the door drive system may be the so-called screw system in which a screw shaft corresponding to a bolt is rotated by a motor to open and close a door attached to a ball nut corresponding to a nut. Alternatively, the door drive system may be the so-called rack-and-pinion system in which a pinion of a rack-and-pinion mechanism is rotated by a motor to open and close a door attached to a rack rail. For example, the door drive system can be changed according to required specifications.

[0032] FIG. 1 is a front view of the vicinity including a swing arm mechanism 50 of the embodiment. FIG. 2 is a perspective view of the vicinity including the upper part of the swing arm mechanism 50 of the embodiment. FIG. 3 is a perspective view of the vicinity including the lower part of the swing arm mechanism 50 of the embodiment. FIG. 4 is a perspective view of one side in the front-rear direction of the swing arm mechanism 50 of the embodiment. In each drawing, the constituent elements on one side (-X side) in the front-rear direction of the swing arm mechanism 50 are suffixed with the symbol A, and the constituent elements on the other side (+X side) are suffixed with the symbol B, but unless there is a particular need to distinguish between them, the suffix symbols will be omitted in the description.

[0033] The swing arm mechanism 50 guides the movement of the door 2, which opens and closes the vehicle entrance / exit 15, in the width direction and the front-rear direction of the vehicle, and moves the upper and lower parts of the door 2 in conjunction with each other. As shown in FIG. 3, the swing arm mechanism 50 includes a pillar portion 51 extending in the vehicle height direction, a support portion 52 that rotatably supports the pillar portion 51 around the longitudinal direction of the pillar portion 51 as the center of rotation, and a fixing portion 53 that meshes with the support portion 52 to fix the pillar portion 51 to the vehicle body.

[0034] 1, the pillar portion 51 extends linearly along the height direction. Two pillar portions 51 are provided spaced apart in the front-rear direction. The pillar portions 51 are disposed outside the boarding / alighting entrance 15 in the front-rear direction.

[0035] Fig. 5 is a perspective view of the periphery including the lower connector 120 of the swing arm mechanism 50 of the embodiment. Fig. 6 is a perspective view of the periphery including a cross section of the lower connector 120 taken along the XZ plane of the embodiment. As shown in Fig. 5, the support portion 52 has a cylindrical shape parallel to the longitudinal direction of the pillar portion 51. The pillar portion 51 and the support portion 52 are arranged coaxially with each other. As shown in Fig. 6, the support portion 52 includes a bearing 60 and a cylindrical holder 70 that supports the bearing 60. The bearing 60 has an inner ring 61, an outer ring 62, and a rolling element 63 that rolls between the inner ring 61 and the outer ring 62. The lower part of the pillar part 51 is fixed to the inner ring 61. The inner periphery of the holder 70 is fixed to the outer ring 62. The outer ring 62 is fixed to the inner periphery surface of the upper part of the holder 70.

[0036] The support part 52 has an engagement part 71 capable of engaging with the fixed part 53 at different engagement positions in the longitudinal direction of the pillar part 51. The fixed part 53 has a cylindrical shape that covers the support part 52. The engagement part 71 is provided on an outer peripheral surface parallel to the longitudinal direction of the support part 52. The engagement part 71 is provided on an outer peripheral surface of the holder 70. The engagement part 71 is a male thread 71 (an example of one of the threaded parts) formed on the outer peripheral surface of the holder 70. The fixed part 53 has a female thread 54 (an example of the other of the threaded parts) with which the male thread 71 engages. The female thread 54 is formed on the inner peripheral surface of the fixed part 53. The male thread 71 formed on the outer peripheral surface of the holder 70 can engage with the female thread 54 formed on the inner peripheral surface of the fixed part 53 at different engagement positions in the longitudinal direction of the pillar part 51.

[0037] FIG. 7 is a diagram including a cross section of the support portion 52 and the fixed portion 53 of the embodiment taken along the XY plane. As shown in FIG. 7, the holder 70 constituting the support portion 52 has an adjustment groove 72 at a position different from the meshing portion 71 on the outer circumferential surface of the holder 70, into which a tool can be fitted to rotate the holder 70.

[0038] 5, the support portion 52 has a protruding portion 73 that protrudes from a lower end (one example of one end of the fixed portion 53) of the fixed portion 53. The adjustment groove 72 is provided in at least the protruding portion 73. The adjustment grooves 72 extend parallel to the longitudinal direction of the support portion 52. As shown in Fig. 7, a plurality of adjustment grooves 72 (for example, six in this embodiment) are provided on the outer peripheral surface of the holder 70. In the cross-sectional view of Fig. 7, the plurality of adjustment grooves 72 are disposed at equal intervals from one another in the circumferential direction of the outer peripheral surface of the holder 70. Note that in the cross-sectional view of Fig. 7, the male thread 71 formed on the outer peripheral surface of the holder 70 corresponds to a portion between two adjacent adjustment grooves 72 in the circumferential direction of the outer peripheral surface of the holder 70.

[0039] A through hole 55 is formed in the fixing part 53. The through hole 55 opens in the radial direction of the cylindrical fixing part 53. The support part 52 has a positioning member 56 that fits into the adjustment groove 72 through the through hole 55 to determine the meshing position. For example, the positioning member 56 is a bolt that can fit into the adjustment groove 72 through the through hole 55. For example, when the positioning member 56 is fitted into the adjustment groove 72, the position of the support part 52 relative to the fixing part 53 (rotation of the holder 70 centered on the longitudinal direction of the pillar part 51) is constrained. As a result, the meshing position of the male thread 71 formed on the outer peripheral surface of the holder 70 is determined with respect to the female thread 54 formed on the inner peripheral surface of the fixing part 53.

[0040] FIG. 8 is a diagram including a cross section of an inner pipe portion 80 and an outer pipe portion 81 of the pillar portion 51 of the embodiment cut along the XZ plane. 8, the pillar portion 51 includes an inner pipe portion 80 and an outer pipe portion 81 that houses the inner pipe portion 80. Each of the inner pipe portion 80 and the outer pipe portion 81 is formed with either a protrusion 82 that extends in the longitudinal direction of the pillar portion 51 or a recess 83 into which the protrusion 82 fits, in a region where the inner pipe portion 80 and the outer pipe portion 81 overlap.

[0041] The inner pipe portion 80 has a cylindrical inner column portion 80a extending in the longitudinal direction of the pillar portion 51. A protrusion 82 extending in the longitudinal direction of the pillar portion 51 is formed on the outer circumferential surface of the inner column portion 80a. The outer pipe portion 81 has a cylindrical outer tube portion 81a that houses the inner pillar portion 80a. A recess 83 into which the protrusion 82 fits is formed on the upper end side of the outer tube portion 81a. The recess 83 extends in the longitudinal direction of the pillar portion 51. The longitudinal length of the recess 83 is longer than the longitudinal length of the protrusion 82.

[0042] When the convex portion 82 of the inner pipe portion 80 is fitted into the concave portion 83 of the outer pipe portion 81, the inner pipe portion 80 and the outer pipe portion 81 are restricted in their circumferential movement relative to each other (rotation around the longitudinal direction of the pillar portion 51) while being permitted to move relative to each other in the axial direction (movement in the longitudinal direction of the pillar portion 51). A lower portion of the outer pipe portion 81 is supported by the support portion 52 (see FIG. 5). For example, when the support portion 52 meshes with the fixed portion 53 at different meshing positions in the longitudinal direction, the outer pipe portion 81 is displaced relative to the inner pipe portion 80 at different positions in the longitudinal direction.

[0043] As shown in Fig. 2, the upper end of the pillar portion 51 is attached to the upper part of the vehicle body via an upper bracket 40. As shown in Fig. 3, the lower end of the pillar portion 51 is attached to the lower part of the vehicle body via a lower bracket 41. The pillar portion 51 is supported by the brackets 40, 41 so as to be rotatable about an axis extending in the height direction. The fixing portion 53 corresponds to the portion of the lower bracket 41 that engages with the support portion 52 (the cylindrical portion that covers the support portion 52).

[0044] As shown in Fig. 4, lower bracket 41 is formed with bolt holes 42 through which bolts for fixing lower bracket 41 to the lower part of the vehicle body pass. A plurality of bolt holes 42 (for example, three in this embodiment) are arranged at intervals in the height direction of the vehicle. For example, bolt hole 42 may be an elongated hole having a longitudinal direction in the width direction of the vehicle. This allows lower bracket 41 to be positioned in the width direction of the vehicle relative to the lower part of the vehicle body.

[0045] The plug door device comprises an upper connecting portion 110 (see Figure 2) that connects the upper portion of the door 2 to the upper portion of the pillar portion 51, and a lower connecting portion 120 (see Figure 3, an example of a connecting portion that connects the lower portion of the door to the pillar portion 51) that connects the lower portion of the door 2 to the lower portion of the pillar portion 51.

[0046] As shown in Fig. 2, the upper connector 110 is attached to the upper part of the pillar part 51 in a non-rotatable state. The upper connector 110 supports the upper part of the door 2 and rotates integrally with the pillar part 51 as the center of rotation. As shown in Fig. 4, the upper connector 110 includes an arm base 111 arranged coaxially with the pillar part 51, and an upper arm 112 extending from the arm base 111 toward the upper end of the door 2. For example, the arm base 111 and the upper arm 112 may be integrally formed from the same member.

[0047] The arm base 111 is annular and coaxial with the pillar portion 51. The arm base 111 is disposed in the vicinity of a lower portion of a portion of the upper bracket 40 that is connected to the pillar portion 51. The arm base 111 surrounds the periphery of the pillar portion 51. For example, a bearing that rotatably supports the pillar portion 51 may be provided between the inner periphery of the arm base 111 and the pillar portion 51.

[0048] The upper arm 112 extends from the arm base 111 radially outward (outward in a direction perpendicular to the central axis of the arm base 111). The upper arm 112 includes a first extension portion 113 extending radially outward from the arm base 111 with a uniform width, a second extension portion 114 extending upward from the tip of the first extension portion 113, and a third extension portion 115 gradually tapering from the tip of the second extension portion 114 radially outward (specifically, radially outward along an extension line of the first extension portion 113 as viewed from the height direction). As shown in FIG. 2, the slide base 4 is provided with a guide member 20 that guides the movement of the upper arm 112 in the front-rear direction. As shown in FIG. 4, the third extension portion 115 may have a rotor 116 that rolls along the rail of the guide member 20.

[0049] As shown in FIG. 5, the lower connecting portion 120 includes a first arm 121 that extends to connect the lower portion of the door 2 to a first axis portion 124 parallel to the longitudinal direction of the pillar portion 51 and is rotatable around the first axis portion 124, a second arm 122 that extends to connect a second axis portion 125 parallel to the first axis portion 124 and the first axis portion 124 and is rotatable around the first axis portion 124 and the second axis portion 125, and a third arm 123 that extends to connect the second axis portion 125 and the pillar portion 51 and is rotatable around the second axis portion 125 and the pillar portion 51.

[0050] The first arm 121 curves and extends so as to connect the lower part of the door 2 and the first shaft portion 124. In the example of Fig. 5, the first arm 121 extends from the lower part of the door 2 toward the inside in the width direction, and then curves and extends toward one side in the front-rear direction (the +X side). A portion of the first arm 121 opposite the door 2 is rotatably connected to the first shaft portion 124.

[0051] Note that the portion of the first arm 121 opposite to the door 2 may be rotatably connected to another shaft portion 126 parallel to the longitudinal direction of the pillar portion 51. For example, the other shaft portion 126 may be provided on the tip side of the shaft support portion 43 extending from the lower bracket 41 toward the outside in the width direction beyond the pillar portion 51.

[0052] The second arm 122 extends in a curved manner so as to connect the first shaft portion 124 and the second shaft portion 125. In the example of FIG. 5, the second arm 122 has a curved shape that curves radially outward from the pillar portion 51. A portion of the second arm 122 on the first shaft portion 124 side is sandwiched between the first arms 121 from both sides in the longitudinal direction of the pillar portion 51. The first arm 121 and the second arm 122 are connected to each other so as to be rotatable about the first shaft portion 124.

[0053] 5, the second arm 122 is provided with a bulging portion 122a that bulges in the height direction. A hollowed-out portion 122b is formed in the bulging portion 122a to reduce weight. Note that the bulging portion 122a does not necessarily have to have the hollowed-out portion 122b. Also, the second arm 122 does not necessarily have to have the bulging portion 122a.

[0054] The third arm 123 is attached to the lower part of the pillar part 51 in a state where it cannot rotate around the longitudinal direction of the pillar part 51. The third arm 123 is connected to the lower bracket 41 above and in the vicinity of a portion (fixing part 53) to which the pillar part 51 is connected.

[0055] The third arm 123 extends radially outward from the pillar portion 51 (outward in a direction perpendicular to the central axis of the pillar portion 51). A tip side of the third arm 123 is rotatably connected to the second shaft portion 125. A portion of the second arm 122 on the second shaft portion 125 side is sandwiched by the third arms 123 from both sides in the longitudinal direction of the pillar portion 51. The second arm 122 and the third arm 123 are rotatably connected to each other around the second shaft portion 125.

[0056] 3, a lower guide rail 90 for guiding the movement of the first arm 121 in the front-rear direction is provided at the lower end portion of the door 2. The lower guide rail 90 extends in the front-rear direction.

[0057] As shown in FIG. 5, the first arm 121 includes rollers 101, 102, and 103 that roll along the lower guide rail 90. A plurality of rollers 101, 102, and 103 (for example, three in this embodiment) are attached to the portion of the first arm 121 on the door 2 side. Each roller 101, 102, and 103 is attached to the portion of the first arm 121 on the door 2 side in a state in which it can rotate around an axis extending in the height direction. Each roller 101, 102, and 103 is disposed above the portion of the first arm 121 on the door 2 side. One of the three rollers 101, 102, and 103 (reference numeral 101) is an outer roller 101 disposed outside the lower guide rail 90 in the width direction. The remaining two of the three rollers 101, 102, and 103 (reference numerals 102 and 103) are inner rollers 102 and 103 disposed inside the lower guide rail 90 in the width direction.

[0058] The lower guide rail 90 is sandwiched between one outer roller 101 and two inner rollers 102, 103. The lower guide rail 90 has a first guide surface 91 (an outer wall surface on the +Y side) that guides the outer roller 101, and a second guide surface 92 (an inner wall surface on the -Y side) that guides the inner rollers 102, 103.

[0059] Each of the rollers 101, 102, 103 moves along the guide surfaces 91, 92 (the outer wall surface on the +Y side or the inner wall surface on the -Y side) of the lower guide rail 90 in association with the plugging operation of the door 2. For example, when the door 2 moves from the fully closed position to the outside in the width direction (specifically, diagonally including the width direction), the outer roller 101 is pushed to the +Y side by the first guide surface 91 (the outer wall surface on the +Y side) of the lower guide rail 90. Then, the first arm 121 of one lower connecting part 120A is pulled to the +Y side, and the second arm 122 is also pulled to the +Y side. As a result, the third arm 123 is pulled by the second arm 122 and rotates clockwise (in the direction of the arrow E1 in FIG. 3) around the pillar part 51A as the center of rotation when viewed from below. At this time, the first arm 121 of the other lower connecting part 120B is pulled to the +Y side, and the second arm 122 is also pulled to the +Y side. As a result, the third arm 123 is pulled by the second arm 122 and rotates counterclockwise (in the direction of the arrow E2 in FIG. 3) around the pillar part 51A as the center of rotation when viewed from below. Thereafter, when the door 2 moves straight outward in the front-rear direction, the rollers 101, 102, 103 of the two first arms 121 roll along the guide surfaces 91, 92 of the lower guide rail 90. As a result, the door 2 moves outward in the front-rear direction relative to the rollers 101, 102, 103 and the first arms 121, and reaches the fully open position.

[0060] For example, when the door 2 moves straight inward in the front-rear direction from the fully open position, the rollers 101, 102, 103 of the two first arms 121 roll along the guide surfaces 91, 92 of the lower guide rail 90. Thereafter, when the door 2 moves inward in the width direction (specifically, diagonally including the width direction), the inner rollers 102, 103 are pushed toward the -Y side by the second guide surface 92 (the inner wall surface on the -Y side) of the lower guide rail 90. Then, the third arm 123 of one lower connecting portion 120A is pushed by the second arm 122 and rotates counterclockwise (opposite to the direction of arrow E1 in FIG. 3) around the pillar portion 51A as the rotation center when viewed from below. At this time, the third arm 123 of the other lower connecting portion 120B is pushed by the second arm 122 and rotates clockwise (opposite to the direction of arrow E2 in FIG. 3) around the pillar portion 51B as the rotation center when viewed from below. As a result, the door 2 moves to the -Y side in accordance with the rotation of the third arm 123 and reaches the fully closed position.

[0061] The third arm 123 can move up to a dead point where the movement of the door 2 in the width direction can be limited. Here, the dead point means a position (position shown in FIG. 5) where the lower connecting part 120 (so-called link mechanism) having the first arm 121, the second arm 122, and the third arm 123 is completely bent. The lower connecting part 120 is configured to transmit an external force acting on the door 2 when the third arm 123 is at the dead point to the pillar part 51. When the third arm 123 is at the dead point, the first shaft part 124 and the second shaft part 125 are disposed on the opposite sides to each other via the pillar part 51. When the third arm 123 is at the dead point, the door 2 is in a locked state. As shown in FIG. 6, the support part 52 includes a bearing 60 that rotatably supports the pillar part 51, and a holder 70 that supports the bearing 60. The holder 70 can receive an external force acting on the door 2 when the third arm 123 is at the dead point.

[0062] For example, an external force acting on the door 2 when the third arm 123 is at the dead point (e.g., an external force from one side in the width direction or from an oblique direction including the width direction) is transmitted to the pillar portion 51 via the first arm 121, the second arm 122, and the third arm 123. The external force transmitted to the pillar portion 51 is transmitted to the holder 70 via the inner ring 61, the rolling element 63, and the outer ring 62 of the bearing 60. In this way, the holder 70 receives the external force acting on the door 2 when the third arm 123 is at the dead point. The external force transmitted to the holder 70 is transmitted to the vehicle body side via the fixed portion 53.

[0063] 5, the pillar portion 51 has a joint portion 85 that is rotatable about a connection point with the pillar portion 51, at a position vertically lower than an upper connecting portion 110 that connects the upper portion of the door 2 to the pillar portion 51 and vertically higher than a lower connecting portion 120 that connects the lower portion of the door 2 to the pillar portion 51. The joint portion 85 has two pins 86, 87 that intersect with each other with respect to the axis of the pillar portion 51. For example, the joint portion 85 is a universal joint.

[0064] The joint portion 85 is not limited to a universal joint, and may be a spherical bearing. For example, the joint portion 85 may include at least one of a universal joint and a spherical bearing. For example, the configuration of the joint portion 85 may be changed according to the required specifications.

[0065] An example of a method for adjusting the height of the pillar portion 51 that constitutes the swing arm mechanism 50 will now be described. For example, first, a tool is fitted into the adjustment groove 72. Specifically, a tool (e.g., a J-spanner) is fitted into the adjustment groove 72 provided in the protruding portion 73 that protrudes downward from the lower end of the fixed portion 53. Next, the protruding portion 73 (holder 70) is rotated with the tool. When the holder 70 is rotated, the holder 70 meshes with the fixed portion 53 at different meshing positions in the longitudinal direction of the pillar portion 51.

[0066] The tool for rotating the holder 70 is not limited to the example of a J spanner. For example, the holder 70 may be rotated by fitting a hook wrench into the adjustment groove 72. For example, the holder 70 may be rotated by clamping the holder 70 (for example, a portion other than the meshing portion 71) with an adjustable wrench. For example, if the holder 70 has a hole, the holder 70 may be rotated by fitting a screwdriver into the hole. For example, if the holder 70 has a hexagonal hole, the holder 70 may be rotated by fitting a hexagonal wrench into the hexagonal hole. For example, the mode of the tool for rotating the holder 70 can be changed according to the required specifications.

[0067] For example, when the holder 70 is rotated in the direction of the arrow R in FIG. 5, the holder 70 moves to one side of the longitudinal direction of the pillar part 51 and engages with the fixed part 53 at a first meshing position. Since the lower part of the pillar part 51 is supported by the holder 70 via the bearing 60, the lower part of the pillar part 51 moves to one side of the longitudinal direction of the pillar part 51 (one side of the height direction of the vehicle) in conjunction with the movement of the holder 70. Conversely, when the holder 70 is rotated in the direction opposite to the direction of the arrow R in FIG. 5, the holder 70 moves to the other side of the longitudinal direction of the pillar part 51 and engages with the fixed part 53 at a second meshing position different from the first meshing position. The lower part of the pillar part 51 moves to the other side of the longitudinal direction of the pillar part 51 (the other side of the height direction of the vehicle) in conjunction with the movement of the holder 70. By rotating the holder 70 in this manner, the height of the pillar part 51 can be adjusted.

[0068] As described above, the plug door device 1 according to the present embodiment includes the fixed base 3 fixed to the vehicle body, the slide base 4 provided on the fixed base 3 so as to be movable in the width direction of the vehicle relative to the fixed base 3, the door drive mechanism 30 provided on the slide base 4 and moving the door 2 for opening and closing the vehicle entrance 15 in the front-rear direction of the vehicle, and the swing arm mechanism 50 which guides the movement of the door 2 in the width direction of the vehicle and the front-rear direction of the vehicle and moves the upper part of the door 2 and the lower part of the door 2 in conjunction with each other. The swing arm mechanism 50 includes a pillar part 51 extending in the height direction of the vehicle, a support part 52 which supports the pillar part 51 rotatably around the longitudinal direction of the pillar part 51 as the center of rotation, and a fixed part 53 which engages with the support part 52 to fix the pillar part 51 to the vehicle body. The support part 52 has an engagement part 71 which can engage with the fixed part 53 at different engagement positions in the longitudinal direction of the pillar part 51.

[0069] According to this configuration, the position of the pillar part 51 in the vehicle height direction (the height of the pillar part 51) can be adjusted by changing the meshing position of the support part 52 with respect to the fixed part 53. Therefore, it is not necessary to provide a separate adjustment mechanism for adjusting the height of the pillar part 51 in the pillar part 51. In other words, no parts other than the support part 52 are required to adjust the height of the pillar part 51. Therefore, the number of parts can be reduced.

[0070] The support portion 52 according to this embodiment has a cylindrical shape. The meshing portion 71 is provided on an outer circumferential surface of the support portion 52 that is parallel to the longitudinal direction of the support portion 52. This configuration makes it possible to reduce the size of the vehicle in the height direction, compared to a case in which the meshing portion 71 is provided at the end in the longitudinal direction of the support portion 52. In addition, since the meshing portion 71 is provided on the outer peripheral surface parallel to the longitudinal direction of the support portion 52, the function of the inner peripheral surface side of the support portion 52 (the side that rotatably supports the pillar portion 51) is less likely to be impaired.

[0071] The support portion 52 according to this embodiment includes a bearing 60 having an inner ring 61, an outer ring 62, and a rolling element 63 that rolls between the inner ring 61 and the outer ring 62, and a cylindrical holder 70 that supports the bearing 60. The pillar portion 51 is fixed to the inner ring 61. The inner periphery of the holder 70 is fixed to the outer ring 62. The meshing portion 71 is provided on the outer periphery surface of the holder 70. According to this configuration, since the meshing portion 71 is provided on the outer peripheral surface of the holder 70, there is no need to provide the meshing portion 71 on the bearing 60. Therefore, the function of the bearing 60 is less likely to be impaired. In addition, the processing burden on the bearing 60 can be reduced.

[0072] The support portion 52 according to this embodiment has an adjustment groove 72 at a position on the outer circumferential surface of the support portion 52 that is different from the meshing portion 71, into which a tool can be fitted to rotate the support portion 52. According to this configuration, the height of the pillar portion 51 can be adjusted by fitting a tool into the adjustment groove 72, so there is no need to apply the tool to the meshing portion 71. Therefore, it is possible to prevent the meshing portion 71 from being crushed by the adjustment.

[0073] The fixed portion 53 according to this embodiment has a cylindrical shape that covers the support portion 52. The support portion 52 has a protruding portion 73 that protrudes from one end of the fixed portion 53. The adjustment groove 72 is provided in at least the protruding portion 73. With this configuration, it is easier to fit a tool into the adjustment groove 72 compared to when the support portion 52 does not protrude from one end or the other end of the fixed portion 53, making it easier to adjust the height of the pillar portion 51.

[0074] The fixing portion 53 according to this embodiment is formed with a through hole 55. The support portion 52 has a positioning member 56 that fits into the adjustment groove 72 via the through hole 55 to determine the meshing position. According to this configuration, since there is no need to provide a positioning structure separately from the adjustment groove 72, the processing burden can be reduced.

[0075] The pillar portion 51 according to this embodiment includes an inner pipe portion 80 and an outer pipe portion 81 that houses the inner pipe portion 80. Each of the inner pipe portion 80 and the outer pipe portion 81 is formed with either a protrusion 82 extending in the longitudinal direction of the pillar portion 51 or a recess 83 into which the protrusion 82 fits, in a region where the inner pipe portion 80 and the outer pipe portion 81 overlap. According to this configuration, the height of the pillar portion 51 can be adjusted without changing the connection position of the pillar portion 51 with respect to the upper and lower portions of the door 2, thereby reducing the adjustment burden.

[0076] The plug door device 1 according to this embodiment includes a lower connecting portion 120 that connects the lower portion of the door 2 to the pillar portion 51. The lower connecting portion 120 includes a first arm 121 that extends to connect the lower portion of the door 2 to a first shaft portion 124 that is parallel to the longitudinal direction of the pillar portion 51 and is rotatable around the first shaft portion 124, a second arm 122 that extends to connect a second shaft portion 125 that is parallel to the first shaft portion 124 and the first shaft portion 124 and is rotatable around the first shaft portion 124 and the second shaft portion 125, and a third arm 123 that extends to connect the second shaft portion 125 and the pillar portion 51 and is rotatable around the second shaft portion 125 and the pillar portion 51. The third arm 123 is movable up to a dead point that can limit the movement of the door 2 in the width direction. The lower connecting portion 120 is configured to transmit an external force acting on the door 2 when the third arm 123 is at the dead point to the pillar portion 51. The support portion 52 includes a bearing 60 that rotatably supports the pillar portion 51, and a holder 70 that supports the bearing 60 and is capable of receiving the external force. According to this configuration, when an external force acts on the door 2 while the third arm 123 is at the dead point, the load applied to the bearing 60 through the lower connecting part 120 and the pillar part 51 can be received not only by the bearing 60 but also by the holder 70. This can also contribute to improving the rigidity of the support part 52.

[0077] The pillar portion 51 in this embodiment has a joint portion 85 that is rotatable around the connection point with the pillar portion 51, located vertically below the upper connecting portion 110 that connects the upper portion of the door 2 and the pillar portion 51 and vertically above the lower connecting portion 120 that connects the lower portion of the door 2 and the pillar portion 51. According to this configuration, the joint portion 85 absorbs positional misalignment of the pillar portion 51 relative to the upper and lower portions of the door 2, while preventing each connecting portion from shifting obliquely, thereby preventing interference with the transmission of force between the pillar portion 51 and the upper or lower portions of the door 2.

[0078] The meshing portion 71 according to this embodiment is a male thread 71. The fixing portion 53 has a female thread 54. The male thread 71 can mesh with the female thread 54 at different meshing positions in the longitudinal direction of the pillar portion 51. According to this configuration, the height of the pillar portion 51 can be adjusted by the male and female screw structure.

[0079] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0080] In the above-described embodiment, the meshing portion is provided on the outer peripheral surface parallel to the longitudinal direction of the support portion, but this is not limited thereto. For example, the meshing portion may be provided on the inner peripheral surface parallel to the longitudinal direction of the support portion. For example, the installation mode of the meshing portion can be changed according to the required specifications.

[0081] In the above-described embodiment, the support portion includes a bearing having an inner ring, an outer ring, and rolling elements that roll between the inner ring and the outer ring, and a cylindrical holder that supports the bearing. However, the present invention is not limited to this. For example, the support portion does not need to include a holder. For example, the configuration of the support portion can be changed according to the required specifications.

[0082] In the above-described embodiment, the meshing portion is provided on the outer peripheral surface of the holder, but this is not limited thereto. For example, when the support does not have a holder, the meshing portion may be provided on the outer peripheral surface of the outer ring of the bearing. For example, the installation mode of the meshing portion can be changed according to the required specifications.

[0083] In the above-described embodiment, the support portion has an adjustment groove in which a tool can be fitted to rotate the support portion at a position different from the meshing portion on the outer circumferential surface of the support portion, but the present invention is not limited to this. For example, the support portion may not have an adjustment groove. For example, the support portion may be rotated by pinching the support portion with a tool. For example, if the support portion has a hole, the support portion may be rotated by inserting a screwdriver into the hole. For example, the mode for rotating the support portion may be changed according to the required specifications.

[0084] In the above-described embodiment, the support portion has a protruding portion protruding from one end of the fixed portion, but the present invention is not limited to this. For example, the support portion may have another protruding portion protruding from the other end of the fixed portion. For example, the support portion may have a protruding portion protruding from one end or the other end of the fixed portion. For example, the form of the protruding portion can be changed according to the required specifications.

[0085] In the above-described embodiment, an example in which the adjustment groove is provided at least in the protruding portion has been described, but this is not limiting. For example, the adjustment groove does not have to be provided in the protruding portion. For example, the adjustment groove may be provided in the bottom surface of the support portion. For example, if the bottom surface of the support portion has a hexagonal hole as the adjustment groove, the support portion may be rotated by fitting a hexagonal wrench into the hexagonal hole. For example, the installation mode of the adjustment groove can be changed according to the required specifications.

[0086] In the above-described embodiment, an example has been described in which a through hole is formed in the fixing portion, and the support portion has a positioning member that fits into the adjustment groove via the through hole to determine the meshing position, but this is not limited to the above. For example, the fixing portion may not have a through hole. For example, the support portion may not have a positioning member that fits into the adjustment groove via the through hole to determine the meshing position. For example, a positioning structure may be provided separately from the adjustment groove. For example, the configuration for determining the meshing position can be changed according to the required specifications.

[0087] In the above-described embodiment, the pillar portion includes an inner pipe portion and an outer pipe portion that houses the inner pipe portion, but the present invention is not limited to this. For example, the pillar portion does not need to include an inner pipe portion and an outer pipe portion that houses the inner pipe portion. For example, the pillar portion may be a single member that extends in the height direction of the vehicle. For example, the configuration of the pillar portion can be changed according to the required specifications.

[0088] In the above-mentioned embodiment, an example has been described in which the inner pipe portion and the outer pipe portion each have a convex portion extending in the longitudinal direction of the pillar portion and a concave portion into which the convex portion fits formed in the overlapping region of the inner pipe portion and the outer pipe portion, but the present invention is not limited to this. For example, the inner pipe portion and the outer pipe portion each do not need to have a convex portion extending in the longitudinal direction of the pillar portion and a concave portion into which the convex portion fits formed in the overlapping region of the inner pipe portion and the outer pipe portion. For example, the inner pipe portion and the outer pipe portion each may have a plurality of convex portions arranged at intervals in the longitudinal direction of the pillar portion and a concave portion into which the convex portions fit formed in the overlapping region of the inner pipe portion and the outer pipe portion. For example, the configuration of the convex portion and the concave portion into which the convex portion fits can be changed according to the required specifications.

[0089] In the above-described embodiment, an example has been described in which the lower connector connects the lower part of the door and the pillar part, and the lower connector is a link mechanism having a first arm, a second arm, and a third arm, but the present invention is not limited to this. For example, the lower connector may be a link mechanism having two arms or four or more arms. For example, the lower connector does not have to be a link mechanism. For example, the lower connector may be composed of a single arm. For example, the configuration of the lower connector can be changed according to the required specifications.

[0090] In the above-described embodiment, the lower connector is a link mechanism having a first arm, a second arm, and a third arm, but the present invention is not limited to this. For example, the upper connector that connects the upper part of the door and the pillar part may be a link mechanism having a first arm, a second arm, and a third arm. For example, the configuration of each connector may be changed according to the required specifications.

[0091] In the above-described embodiment, an example has been described in which the pillar portion has a joint portion that is rotatable around a connection point with the pillar portion, at a position vertically lower than an upper connection portion that connects an upper portion of the door to the pillar portion and vertically higher than a lower connection portion that connects a lower portion of the door to the pillar portion, but this is not limited to the above. For example, the pillar portion may not have a joint portion. For example, the pillar portion may be a single member that extends in the height direction of the vehicle between the upper connection portion and the lower connection portion. For example, the configuration of the pillar portion may be changed according to the required specifications.

[0092] In the above-described embodiment, an example has been described in which the meshing portion is a male thread and the fixing portion has a female thread, but this is not limited thereto. For example, the meshing portion may be a female thread and the fixing portion may have a male thread. For example, the meshing portion may be one of a male thread or a female thread, and the fixing portion may have the other of a female thread or a male thread, and one of the threads may be capable of meshing with the other thread at a different meshing position in the longitudinal direction of the pillar portion. For example, the configuration of the meshing portion and the fixing portion (the installation mode of the male thread or the female thread) may be changed according to the required specifications.

[0093] For example, in the above-described embodiment, an example has been described in which the plug door device is provided with a pair of doors that open and close the boarding and alighting entrance of a railroad vehicle, but the present invention is not limited to this. For example, the plug door device may be provided on a vehicle other than a railroad vehicle. For example, the plug door device may be provided with a single-sliding door.

[0094] In addition, the components in the above-described embodiment may be replaced with well-known components without departing from the spirit of the present invention. Also, the above-described modified examples may be combined. Among the embodiments disclosed in this specification, those that are composed of multiple objects may be integrated, and conversely, those that are composed of one object may be divided into multiple objects. Regardless of whether they are integrated or not, it is sufficient that they are configured to achieve the object of the invention. [Explanation of symbols]

[0095] 1...plug door device, 2...door, 3...fixed base, 4...slide base, 15...entrance / exit, 30...door drive mechanism, 50...swing arm mechanism, 51...pillar portion, 52...support portion, 53...fixed portion, 54...female thread (other thread portion), 55...through hole, 56...positioning member, 60...bearing, 61...inner ring, 62...outer ring, 63...rolling body, 70...holder, 71...male thread (engagement portion, one thread portion), 72...adjustment groove, 73...projection portion, 80...inner tube portion, 81...outer tube portion, 82...convex portion, 83...concave portion, 85...joint portion, 110...upper connecting portion, 120...lower connecting portion (connecting portion), 121...first arm, 122...second arm, 123...third arm, 124...first shaft portion, 125...second shaft portion

Claims

1. A fixed base that is 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 relative to the fixed base; a door drive mechanism provided on the slide base and configured to move a door for opening and closing an entrance of the vehicle in a front-rear direction of the vehicle; a swing arm mechanism that guides movement of the door in the width direction and the front-rear direction of the vehicle and moves an upper part of the door and a lower part of the door in conjunction with each other, The swing arm mechanism includes: A pillar portion extending in a height direction of the vehicle; a support portion that supports the pillar portion rotatably around a longitudinal direction of the pillar portion as a rotation center; a fixing portion that engages with the support portion to fix the pillar portion to the vehicle body, The support portion has an engagement portion that can engage with the fixed portion at different engagement positions in the longitudinal direction. Plug door device.

2. The support portion is cylindrical, The meshing portion is provided on an outer peripheral surface parallel to the longitudinal direction of the support portion. The plug door apparatus according to claim 1 .

3. The support portion is a bearing having an inner ring, an outer ring, and a rolling element that rolls between the inner ring and the outer ring; The cylindrical holder supports the bearing, The pillar portion is fixed to the inner ring, The inner periphery of the holder is fixed to the outer ring, The meshing portion is provided on an outer circumferential surface of the holder. The plug door device according to claim 2.

4. The support portion has an adjustment groove in which a tool can be fitted to rotate the support portion at a position on the outer circumferential surface of the support portion different from the meshing portion. A plug door device according to claim 2 or 3.

5. The fixing portion has a cylindrical shape that covers the support portion, The support portion has a protruding portion protruding from one end or the other end of the fixed portion, The adjustment groove is provided at least in the protrusion. The plug door device according to claim 4.

6. the support portion has an adjustment groove in which a tool can be fitted to rotate the support portion, the adjustment groove being located at a position on an outer circumferential surface of the support portion different from the meshing portion; A through hole is formed in the fixing portion, The support portion further includes a positioning member that is fitted into the adjustment groove via the through hole to determine the meshing position. A plug door device according to any one of claims 2 to 5.

7. The pillar portion includes an inner pipe portion and an outer pipe portion that houses the inner pipe portion, Each of the inner pipe portion and the outer pipe portion is formed with one of a protrusion extending in the longitudinal direction of the pillar portion and a recess into which the protrusion fits, in an area where the inner pipe portion and the outer pipe portion overlap. A plug door device according to any one of claims 2 to 6.

8. A connecting portion that connects the lower portion of the door and the pillar portion is further provided, The connecting portion is a first arm extending to connect a lower portion of the door and a first shaft portion parallel to a longitudinal direction of the pillar portion and rotatable about the first shaft portion; a second arm extending to connect the first shaft portion to a second shaft portion parallel to the first shaft portion and rotatable about the first shaft portion and the second shaft portion; a third arm extending to connect the second shaft portion and the pillar portion and rotatable about the second shaft portion and the pillar portion, The third arm is movable to a dead point at which movement of the door in the width direction can be limited, The connecting portion is configured to transmit an external force acting on the door to the pillar portion when the third arm is at the dead center, The support portion is a bearing that rotatably supports the pillar portion; a holder that supports the bearing and is capable of receiving the external force. A plug door device according to any one of claims 1 to 7.

9. The pillar portion has a joint portion that is rotatable about a connection point with the pillar portion, the joint portion being located vertically below an upper connection portion that connects an upper portion of the door and the pillar portion and vertically above a lower connection portion that connects a lower portion of the door and the pillar portion. A plug door device according to any one of claims 1 to 8.

10. The meshing portion is a male thread or a female thread, The fixing portion has the other of the female thread and the male thread, The one threaded portion can be engaged with the other threaded portion at different engagement positions in the longitudinal direction of the pillar portion. A plug door device according to any one of claims 1 to 9.

11. A swing arm mechanism that guides movement of a door that opens and closes a vehicle entrance in a width direction of the vehicle and a front-rear direction of the vehicle and moves an upper part of the door and a lower part of the door in conjunction with each other, A pillar portion extending in a height direction of the vehicle; a support portion that supports the pillar portion rotatably around a longitudinal direction of the pillar portion as a rotation center; a fixing portion that engages with the support portion to fix the pillar portion to the vehicle body, The support portion has an engagement portion that can engage with the fixed portion at different engagement positions in the longitudinal direction. Swing arm mechanism.

Images