Plug door device

Abstract

To provide a plug door device capable of saving energy.SOLUTION: A plug door device 1 includes a guide rail 5 regulating an opening / closing route 20 of a door for opening / closing a doorway of a vehicle, a driving source for moving the door, a rotary body moving integrally with the door by the driving force from the driving source and rolling along the opening / closing route 20 while being guided by the guide rail 5 when the door is opened / closed, a restraint member 7 moving to a restraint position at which the rotary body is restrained at a fully closed position of the door from a non-restraint position at which the door is not restrained by being pressed with the rotary body when the rotary body is moved in a closing direction Vc along the opening / closing route 20, and a lock mechanism 8 holding the restraint member 7 positioned at the restraint position.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a plug door device. [Background technology]

[0002] A plug door device that moves a door in the width direction while moving it in the longitudinal direction of a railway vehicle, i.e., a plug operation, is known. The plug door device includes a guide rail that defines a path for opening and closing the door to open and close the boarding / alighting entrance of the vehicle, and a locking mechanism that locks the door when the door is in a fully closed position. The movement of the door and the operation of the locking mechanism are performed by a driving force from a driving source. For example, Patent Document 1 discloses a configuration including a motor for moving a door and a solenoid device for driving a locking device of the door. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-100397 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, since a drive source for the door and a drive source for the door lock are provided separately, there is room for improvement in terms of energy saving.

[0005] The present invention has been made to solve the above-mentioned problems, and has an object to provide a plug door device that can save energy. [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 aspect of the present invention includes a guide rail that defines an opening / closing path of a door for opening and closing a vehicle entrance / exit; a drive source for moving the door; a moving member that moves integrally with the door by a driving force from the drive source and moves along the opening / closing path while being guided by the guide rail when the door is opened or closed; a restraining member that moves from a non-restraining position that does not restrain the door to a restraining position that restrains the moving member when the door is in a fully closed position by being pushed by the moving member when the moving member moves in a closing direction along the opening / closing path; and a locking mechanism that holds the restraining member in the restraining position. the restraining member is disposed offset in a height direction of the vehicle with respect to the guide rail, the restraining member includes a first arm and a second arm disposed in sequence in the closing direction, when the restraining member is located at the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, when the restraining member is located at the restraining position, the first arm and the second arm cross the opening / closing path, the opening / closing path includes a straight portion along the front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, and the second arm includes a first surface perpendicular to the inclined portion when the restraining member is located at the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is located at the restraining position. .

[0007] According to this configuration, the restraining member can be moved to the restraining position (the position where the door is locked in the fully closed position) by using the driving force of the driving source (door driving source) for moving the door. Therefore, no actuator other than the door driving source is required to move the restraining member. Therefore, energy can be saved.

[0011] ( 2 ) In the plug door device described above in (1), at least a portion of the restraining member may be arranged within a range of the guide rail in the height direction of the vehicle.

[0012] ( 3 )the above( 2 In the plug door device described in, the restraining member may be provided with a guide wall that contacts the moving member in the non-restraining position and guides the movement of the moving member along the opening and closing path.

[0013] ( 4 )From (1) above ( 3 In the plug door device described in any one of the above, the restraining member may be rotatably arranged around an axis extending in the height direction of the vehicle.

[0014] ( 5 )the above( 4In the plug door device described in, the restraining member may be provided on the opposite side of the axis from the portion that restrains the moving member and may include a retained portion that is retained by the locking mechanism.

[0015] ( 6 )the above( 5 In the plug door device described in (1), the held portion may be integrally formed from the same material as the restraining member.

[0016] ( 7 )From (1) above ( 6 In the plug door device described in any one of the above, the restraining member may be provided with a pushing member that presses a switch when the restraining member is located in the restraining position.

[0017] ( 8 )From (1) above ( 7 In the plug door device described in any one of the above, the movable member is a rotating body that is rotatable around an axis extending in the height direction of the vehicle and rolls along the opening and closing path, and the shape of the rotating body may be circular when viewed from the height direction.

[0018] ( 9 )From (1) above ( 8 In the plug door device described in any one of claims 1 to 4, the plug door device may further include an elastic member that applies an elastic force to the restraining member so that the restraining member is maintained in the non-restraining position.

[0019] ( 10 )the above( 9 In the plug door device described in (1), the restraining member is rotatably arranged around an axis extending in the height direction of the vehicle, and the elastic member may be a torsion spring wound around the axis.

[0020] ( 11 )the above( 9In the plug door device described in the above, the restraining member is rotatably arranged around an axis extending in the height direction of the vehicle, the elastic member is a compression spring arranged to be compressible in a direction intersecting the axis, one end of the compression spring is connected to the guide rail and the other end of the compression spring is connected to the restraining member, and the central axis of the compression spring is located on the opposite side of the closing direction from a boundary position where the central axis overlaps with the axis as viewed from the height direction when the moving member moves to the unrestrained position, and is located on the side of the closing direction from the boundary position as viewed from the height direction when the moving member is located at the restrained position.

[0021] ( 12 )From (1) above ( 11 In the plug door device described in any one of the above, a second moving member moves together with the door by the driving force from the driving source and is spaced apart from the moving member so as not to contact the guide rail when the door is opened or closed, and the restraining member may have a restraining wall that is inclined toward the closing direction when viewed from the height direction of the vehicle and restrains the second moving member when the door is in the fully closed position.

[0022] ( 13A plug door device according to an aspect of the present invention includes a guide rail that defines an opening / closing path of a door for opening and closing a vehicle entrance, a drive source for moving the door, a rotating body that moves together with the door by a driving force from the drive source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed, a restraining member that is pushed by the rotating body when the rotating body moves in a closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is in a fully closed position, and a locking mechanism that holds the restraining member in the restraining position.the rotating body is rotatable about an axis extending in a height direction of the vehicle, the rotating body has a circular shape when viewed from the height direction, the restraining member is disposed offset in the height direction with respect to the guide rail, the restraining member includes a first arm and a second arm disposed in order in the closing direction, when the restraining member is located at the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, when the restraining member is located at the restraining position, the first arm and the second arm cross the opening / closing path, the opening / closing path includes a straight portion along the front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, the second arm includes a first surface perpendicular to the inclined portion when the restraining member is located at the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is located at the restraining position, a member that is rotatable about an axis extending in the height direction, the restraining member is provided on the opposite side of the axis from the part that restrains the rotating body and has a held portion that is held by the locking mechanism, the held portion is formed integrally with the restraining member from the same member, the restraining member is provided with a pushing member that presses a switch when the restraining member is in the restrained position, and further includes a torsion spring that is wound around the axis and applies an elastic force to the restraining member so that the restraining member is maintained in the non-restrained position, and further includes a second moving member that moves integrally with the door by the driving force from the driving source and is provided at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, and the restraining member has a restraining wall that is inclined toward the closing direction when viewed from the height direction and restrains the second moving member when the door is in the fully closed position.

[0023] According to this configuration, the restraining member can be moved to the restraining position (the position where the door is locked in the fully closed position) by using the driving force of the driving source (door driving source) for moving the door. Therefore, no actuator other than the door driving source is required to move the restraining member. Therefore, energy can be saved. In addition, the door is provided with a rotating body that rolls along the opening and closing path while being guided by the guide rail when the door is opened or closed, and the rotating body is rotatable around an axis extending in the height direction of the vehicle and has a circular shape when viewed from the height direction. This reduces friction between the rotating body and the guide rail, allowing the rotating body to move smoothly from the non-constrained position to the constrained position. In addition, since the restraint member is rotatable around an axis extending in the height direction of the vehicle, no space is required in the height direction to allow rotation of the restraint member, and therefore the restraint member can be made smaller in height. In addition, the restraining member is provided on the opposite side of the shaft from the part that restrains the rotating body and is provided with a held part that is held by the locking mechanism.Since the held part and the part that restrains the rotating body are separated from each other by the shaft, sufficient space can be secured for the arrangement of the locking mechanism, thereby improving the freedom of arrangement of the locking mechanism. In addition, since the held portion is formed integrally from the same material as the restraining member, the number of parts can be reduced and costs can be reduced compared to when the held member held by the locking mechanism is provided separately from the restraining member. In addition, the restraining member is provided with a pressing member that presses the switch when the restraining member is in the restraining position, so that the position at which the restraining member presses the switch can be adjusted by changing the installation position of the pressing member. In addition, the door is provided with a second moving member that moves together with the door due to the driving force from the driving source and is spaced apart from the rotating body so as not to come into contact with the guide rail when the door is opened or closed.The restraining member is inclined toward the closing direction when viewed from the vehicle height direction and has a restraining wall that restrains the second moving member when the door is in the fully closed position.Even if the rotating body comes off, the second moving member is restrained by the restraining wall, so that the door can be kept in a locked state. In addition, by displacing the restraint member in the height direction of the vehicle relative to the guide rail, the shape of the guide rail can be made freely, thereby increasing the freedom in designing the guide rail. In addition, the restraining member includes a first arm and a second arm arranged in sequence in the closing direction, and when the restraining member is in the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, so that when the restraining member is in the non-restraining position, the second arm is pushed by the rotating body to move the rotating body from the non-restraining position to the restraining position. On the other hand, when the restraining member is in the restraining position, the first arm and the second arm cross the opening / closing path, so that when the restraining member is in the restraining position, the rotating body can be restrained by the first arm and the second arm. In addition, the opening / closing path includes a straight portion along the front-rear direction of the vehicle and an inclined portion inclined relative to the straight portion, and the second arm includes a first surface perpendicular to the inclined portion when the restraining member is located in the non-restraining position, so that when the restraining member is located in the non-restraining position, the first surface of the second arm is pushed by the rotating body to move the rotating body from the non-restraining position to the restraining position. Meanwhile, the second arm includes a second surface perpendicular to the inclined portion when the restraining member is located in the restraining position, so that when the restraining member is located in the restraining position, the rotating body can be restrained by the second surface of the second arm. In addition, by providing a torsion spring that applies an elastic force to the restraining member so that the restraining member is kept in the non-restraining position, the elastic force of the torsion spring can be used to keep the restraining member in the non-restraining position, so that the rotating body can smoothly push the restraining member that is in the non-restraining position. In addition, since the torsion spring is wound around the shaft, the arrangement space for the torsion spring can be prevented from becoming excessively large.

[0024] ( 14) A plug door device according to an aspect of the present invention includes a guide rail that defines an opening / closing path of a door for opening and closing an entrance of a vehicle, a drive source for moving the door, a rotating body that moves integrally with the door by a driving force from the drive source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed, a restraining member that is pushed by the rotating body when the rotating body moves in a closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is fully closed, and a locking mechanism that holds the restraining member located in the restraining position, wherein the rotating body is rotatable about an axis extending in a height direction of the vehicle, the shape of the rotating body is circular when viewed from the height direction, the restraining member is disposed offset in the height direction with respect to the guide rail, and the restraining member includes a first arm and a second arm that are disposed in sequence in the closing direction, and when the restraining member is disposed in the non-restraining position, the first arm does not cross the opening / closing path, and the second arm is pressed against the opening / closing path. when the restraining member is located at the restraining position, the first arm and the second arm traverse the opening / closing path, the opening / closing path includes a straight portion along a front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, the second arm includes a first surface perpendicular to the inclined portion when the restraining member is located at the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is located at the restraining position, the restraining member is provided rotatably about an axis extending in the height direction, The restraining member is provided on the opposite side of the shaft from the portion that restrains the rotating body and includes a held portion that is held by the locking mechanism, the held portion being integrally formed from the same material as the restraining member, the restraining member is provided with a pressing member that presses a switch when the restraining member is located at the restraining position, and further includes a compression spring that is compressible in a direction intersecting the shaft, one end of the compression spring is connected to the guide rail and the other end of the compression spring is connected to the restraining member, and the central axis of the compression spring isWhen the rotating body moves in the non-constrained position, the rotating body is located on the opposite side of the closing direction from the boundary position where the central axis line overlaps with the axis as viewed from the height direction, and when the rotating body is located in the constrained position, the rotating body is located on the closing direction side from the boundary position as viewed from the height direction, and moves together with the door by the driving force from the driving source and is provided at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, and the constraining member has a constraining wall that is inclined toward the closing direction as viewed from the height direction and constrains the second moving member when the door is in the fully closed position.

[0025] According to this configuration, the restraining member can be moved to the restraining position (the position where the door is locked in the fully closed position) by using the driving force of the driving source (door driving source) for moving the door. Therefore, no actuator other than the door driving source is required to move the restraining member. Therefore, energy can be saved. In addition, the door is provided with a rotating body that rolls along the opening and closing path while being guided by the guide rail when the door is opened or closed, and the rotating body is rotatable around an axis extending in the height direction of the vehicle and has a circular shape when viewed from the height direction. This reduces friction between the rotating body and the guide rail, allowing the rotating body to move smoothly from the non-constrained position to the constrained position. In addition, since the restraint member is rotatable around an axis extending in the height direction of the vehicle, no space is required in the height direction to allow rotation of the restraint member, and therefore the restraint member can be made smaller in height. In addition, the restraining member is provided on the opposite side of the shaft from the part that restrains the rotating body and is provided with a held part that is held by the locking mechanism.Since the held part and the part that restrains the rotating body are separated from each other by the shaft, sufficient space can be secured for the arrangement of the locking mechanism, thereby improving the freedom of arrangement of the locking mechanism. In addition, since the held portion is formed integrally from the same material as the restraining member, the number of parts can be reduced and costs can be reduced compared to when the held member held by the locking mechanism is provided separately from the restraining member. In addition, the restraining member is provided with a pressing member that presses the switch when the restraining member is in the restraining position, so that the position at which the restraining member presses the switch can be adjusted by changing the installation position of the pressing member. In addition, the door is provided with a second moving member that moves together with the door due to the driving force from the driving source and is spaced apart from the rotating body so as not to come into contact with the guide rail when the door is opened or closed.The restraining member is inclined toward the closing direction when viewed from the vehicle height direction and has a restraining wall that restrains the second moving member when the door is in the fully closed position.Even if the rotating body comes off, the second moving member is restrained by the restraining wall, so that the door can be kept in a locked state. In addition, by displacing the restraint member in the height direction of the vehicle relative to the guide rail, the shape of the guide rail can be made freely, thereby increasing the freedom in designing the guide rail. In addition, the restraining member includes a first arm and a second arm arranged in sequence in the closing direction, and when the restraining member is in the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, so that when the restraining member is in the non-restraining position, the second arm is pushed by the rotating body to move the rotating body from the non-restraining position to the restraining position. On the other hand, when the restraining member is in the restraining position, the first arm and the second arm cross the opening / closing path, so that when the restraining member is in the restraining position, the rotating body can be restrained by the first arm and the second arm. In addition, the opening / closing path includes a straight portion along the front-rear direction of the vehicle and an inclined portion inclined relative to the straight portion, and the second arm includes a first surface perpendicular to the inclined portion when the restraining member is located in the non-restraining position, so that when the restraining member is located in the non-restraining position, the first surface of the second arm is pushed by the rotating body to move the rotating body from the non-restraining position to the restraining position. Meanwhile, the second arm includes a second surface perpendicular to the inclined portion when the restraining member is located in the restraining position, so that when the restraining member is located in the restraining position, the rotating body can be restrained by the second surface of the second arm. In addition, a compression spring is provided that is compressible in a direction intersecting the axis, one end of the compression spring is connected to the guide rail and the other end of the compression spring is connected to the restraining member, and the central axis of the compression spring is located on the opposite side to the closing direction from the boundary position where the central axis overlaps with the axis as viewed from the height direction when the rotor moves to the unrestrained position, and is located on the closing direction side from the boundary position as viewed from the height direction when the rotor is located in the restrained position, so that the direction in which the spring force of the compression spring is applied to the restraining member can be changed depending on the moving position of the rotor.

[0026] ( 15A plug door device according to an aspect of the present invention includes a guide rail that defines an opening / closing path of a door for opening and closing a vehicle entrance, a drive source for moving the door, a rotating body that moves together with the door by a driving force from the drive source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed, a restraining member that is pushed by the rotating body when the rotating body moves in a closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is fully closed, and a locking mechanism that holds the restraining member located at the restraining position, wherein the rotating body is rotatable around an axis extending in the height direction of the vehicle, the shape of the rotating body is circular when viewed from the height direction, at least a portion of the restraining member is disposed within the height range of the guide rail, and the restraining member contacts the rotating body at the non-restraining position and moves along the opening / closing path. a guide wall that guides the movement of the rotating body, the restraining member being rotatably arranged around an axis extending in the height direction, the restraining member being arranged on the opposite side of the axis from the part that restrains the rotating body and being held by the locking mechanism, the held part being formed integrally with the restraining member from the same material, the restraining member being provided with a pushing member that presses a switch when the restraining member is in the restrained position, and further comprising a torsion spring that is wound around the axis and applies an elastic force to the restraining member so that the restraining member is maintained in the non-restrained position, and further comprising a second moving member that moves integrally with the door by the driving force from the driving source and is arranged at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, and the restraining member has a restraining wall that is inclined toward the closing direction when viewed from the height direction and restrains the second moving member when the door is in the fully closed position.

[0027] According to this configuration, the restraining member can be moved to the restraining position (the position where the door is locked in the fully closed position) by using the driving force of the driving source (door driving source) for moving the door. Therefore, no actuator other than the door driving source is required to move the restraining member. Therefore, energy can be saved. In addition, the door is provided with a rotating body that rolls along the opening and closing path while being guided by the guide rail when the door is opened or closed, and the rotating body is rotatable around an axis extending in the height direction of the vehicle and has a circular shape when viewed from the height direction. This reduces friction between the rotating body and the guide rail, allowing the rotating body to move smoothly from the non-constrained position to the constrained position. In addition, since the restraint member is rotatable around an axis extending in the height direction of the vehicle, no space is required in the height direction to allow rotation of the restraint member, and therefore the restraint member can be made smaller in height. In addition, the restraining member is provided on the opposite side of the shaft from the part that restrains the rotating body and is provided with a held part that is held by the locking mechanism.Since the held part and the part that restrains the rotating body are separated from each other by the shaft, sufficient space can be secured for the arrangement of the locking mechanism, thereby improving the freedom of arrangement of the locking mechanism. In addition, since the held portion is formed integrally from the same material as the restraining member, the number of parts can be reduced and costs can be reduced compared to when the held member held by the locking mechanism is provided separately from the restraining member. In addition, the restraining member is provided with a pressing member that presses the switch when the restraining member is in the restraining position, so that the position at which the restraining member presses the switch can be adjusted by changing the installation position of the pressing member. In addition, the door is provided with a second moving member that moves together with the door due to the driving force from the driving source and is spaced apart from the rotating body so as not to come into contact with the guide rail when the door is opened or closed.The restraining member is inclined toward the closing direction when viewed from the vehicle height direction and has a restraining wall that restrains the second moving member when the door is in the fully closed position.Even if the rotating body comes off, the second moving member is restrained by the restraining wall, so that the door can be kept in a locked state. In addition, by providing a torsion spring that applies an elastic force to the restraining member so that the restraining member is kept in the non-restraining position, the elastic force of the torsion spring can be used to keep the restraining member in the non-restraining position, so that the rotating body can smoothly push the restraining member that is in the non-restraining position. In addition, since the torsion spring is wound around the shaft, the arrangement space for the torsion spring can be prevented from becoming excessively large. In addition, since at least a portion of the restraining member is positioned within the vehicle's height range of the guide rail, no space is required in the height direction to position the restraining member, and therefore the restraining member can be made smaller in height. In addition, the restraining member is provided with a guide wall that contacts the rotating body in the non-restraining position and guides the movement of the rotating body along the opening and closing path, so that the guide rail or guide wall allows the rotating body to be moved along the opening and closing path, allowing the rotating body to be moved smoothly from the non-restraining position to the restraining position. Effect of the Invention

[0028] According to the present invention, a plug door device capable of saving energy can be provided. [Brief description of the drawings]

[0029] [Figure 1] FIG. 1 is a perspective view of a plug door device according to a first embodiment. [Diagram 2] FIG. 2 is an enlarged view of part II in FIG. [Diagram 3] FIG. 2 is a perspective view of the periphery including a rotating body and a support body according to the first embodiment. [Figure 4] 5A to 5C are explanatory views of the operation of the restraining member of the first embodiment. [Diagram 5] FIG. 11 is a bottom view of the plug door device of the second embodiment. [Figure 6] FIG. 11 is a perspective view of a plug door device according to a third embodiment. [Figure 7] FIG. 11 is a bottom view of the plug door device of the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] 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.

[0031] First Embodiment Fig. 1 is a perspective view of a plug door device according to a first embodiment. Fig. 2 is an enlarged view of a portion II in Fig. 1. Fig. 3 is a perspective view of the periphery including a rotating body and a support body according to the first 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 guide rail 5 (see Fig. 2), a drive source 6, a restraining member 7, and a locking mechanism 8. In Fig. 1, the pair of doors 2 are indicated by two-dot chain lines. Fig. 1 shows a state in which the doors 2 are located in a fully closed position.

[0032] In the following explanation, an X, Y, Z Cartesian coordinate system is used as necessary. The X direction coincides with the front-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, among 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.

[0033] The plug door device 1 includes a swing arm mechanism (not shown) that guides movement of the door 2 in the width direction and the front-rear direction. The plug door device 1 supports the door 2 so that the outer surface of the vehicle body side wall and the outer surface of the door 2 are flush with each other when the door 2 is in a fully closed position. 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.

[0034] 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.

[0035] The slide base 4 slides in the width direction relative to the fixed base 3 by the driving force from the drive source 6, thereby moving the door 2 in the width direction. The slide base 4 is provided below the fixed base 3. The slide base 4 extends in the front-rear direction so as to follow the upper edge of the boarding / alighting opening 15. Both ends of the slide base 4 in the front-rear direction are movable in the width direction along the rail base 9.

[0036] As shown in Fig. 2, the guide rail 5 defines an opening / closing path 20 of the door 2 for opening and closing a vehicle entrance / exit 15 (see Fig. 1). The guide rail 5 is provided above the entrance / exit 15. The guide rail 5 is supported by a fixed base 3 (see Fig. 1). The guide rail 5 is attached to the fixed base 3 by a plurality of fastening members such as bolts.

[0037] The opening / closing path 20 includes a straight portion 21 along the front-rear direction and an inclined portion 22 inclined relative to the straight portion 21. A connection portion 23 between the straight portion 21 and the inclined portion 22 is curved in an arc shape. Note that in FIG. 2, a part of the straight portion 21 is indicated by a two-dot chain line.

[0038] As shown in FIG. 1, the driving source 6 outputs a driving force for moving the door 2. For example, the driving source 6 is a motor. The output shaft of the motor rotates around an axis along the front-rear direction. For example, the output shaft of the motor is rotatable in one direction and the other direction around an axis along the front-rear direction (rotatable forward and reverse). The driving source 6 is connected to a movable power cable 29, a so-called Cableveyor (registered trademark). The driving source 6 is supported by the slide base 4 via a power transmission mechanism 30. The driving source 6 is movable in the width direction together with the movement of the slide base 4 in the width direction.

[0039] The power transmission mechanism 30 includes a power conversion mechanism 31 that converts the direction of the driving force from the drive source 6, and an endless belt 32 that extends along the front-rear direction. The power conversion mechanism 31 converts the rotation of the motor's output shaft about an axis along the front-rear direction into rotation about an axis along the width direction. The power conversion mechanism 31 includes a gear 33 that rotates about an axis along the width direction. A pulley 34 is provided at a position separated from the gear 33 in the front-rear direction, the pulley 34 being rotatable about an axis parallel to the rotation axis of the gear 33 (axis along the width direction).

[0040] 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. A connecting member 35 that moves together with the movement of the belt 32 is attached to the belt 32. As shown in FIG. 3, a rotating body 36 (moving member) and a support body 37 (second moving member) are supported by the connecting member 35.

[0041] For example, the rotating body 36 is a roller that rolls along the opening / closing path 20. The rotating body 36 moves integrally with the door 2 (see FIG. 1) by a driving force from a driving source 6 (see FIG. 1). When the door 2 opens or closes, the rotating body 36 rolls along the opening / closing path 20 while being guided by a guide rail 5. The rotating body 36 is connected to the connecting member 35 so as to be rotatable around an axis extending in the height direction. The rotating body 36 is formed into a circular shape when viewed from the height direction.

[0042] Of the pair of doors 2, the -X side door 2 is connected to the upper part of the belt 32 together with the connecting member 35 via the door hanger 11. In contrast, the +X side door 2 is connected to the lower part 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 upper and lower parts 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 connecting member 35 and the +X side door 2 move in opposite directions to each other in the front-rear direction.

[0043] The pair of doors 2 move from the fully closed position shown in FIG. 1 (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 by transmitting the driving force from the driving source 6 to the belt 32, and moving the door hanger 11 and the connecting member 35 connected to the belt 32. Here, the fully open position means a position where the pair of doors 2 open the boarding / alighting door 15 (fully open) and the pair of doors 2 are outside the vehicle. In the example of FIG. 1, 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.

[0044] The door drive system is not limited to the so-called belt system in which the power transmission 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 the required specifications.

[0045] For example, the support 37 is a pin extending in the height direction. The support 37 extends upward from the connecting member 35. The support 37 moves integrally with the door 2 (see FIG. 1) by the driving force from the driving source 6 (see FIG. 1). The support 37 is provided at a distance from the rotating body 36 so as not to come into contact with the guide rail 5 when the door 2 is opened or closed.

[0046] The restraining member 7 restrains the rotating body 36 when the door 2 (see FIG. 1) is in the fully closed position. The restraining member 7 is disposed offset in the height direction with respect to the guide rail 5. The restraining member 7 is provided below the guide rail 5. The restraining member 7 is provided rotatably about a shaft 39 extending in the height direction.

[0047] An upper part of the shaft 39 is fixed to the guide rail 5. As shown in FIG. 2, a torsion spring 40 (elastic member) is wound around the shaft 39. Hereinafter, the position where the door is not restrained is referred to as the "non-restraint position", and the position where the rotor 36 is restrained when the door is in the fully closed position is referred to as the "restraint position". The restraint position is the same as the fully closed position of the door. The positions of the restraint member 7 shown in FIGS. 1 to 3 and the position of the restraint member 7 shown by the solid line in FIG. 4 indicate the restraint position. The position of the restraint member 7 shown by the two-dot chain line in FIG. 4 indicates the non-restraint position. The torsion spring 40 applies an elastic force to the restraint member 7 so that the restraint member 7 is kept in the non-restraint position (the position shown by the two-dot chain line in FIG. 4).

[0048] When no external force is applied, the restraining member 7 is held in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4) by the elastic force of the torsion spring 40. Hereinafter, the direction in which the door 2 closes will be referred to as the "closing direction".

[0049] Here, the closing direction means the direction in which the door 2 moves from the fully open position to the fully closed position. When the door 2 is closed from the fully open position, it first moves straight along the front-to-rear direction, but then moves inward in the width direction (specifically, diagonally including the width direction). In this way, the direction in which the door 2 moves in the closing direction changes from the beginning to the end. In each figure, the direction in which the -X side door of the pair of doors 2 closes is shown as the closing direction by the arrow Vc (specifically, the component of the closing direction along the front-to-rear direction).

[0050] The restraining member 7 is pushed by the rotating body 36 when the rotating body 36 moves in the closing direction Vc along the opening / closing path 20, and moves from the non-restraining position (the position indicated by the dotted line in Figure 4) to the restraining position (the position indicated by the solid line in Figure 4).

[0051] As shown in Fig. 2, the restraining member 7 includes a first arm 41 and a second arm 42 arranged in this order in the closing direction Vc. The first arm 41 and the second arm 42 are connected together to form a U-shape when viewed from the height direction. When the restraining member 7 is in the non-restraining position (the position indicated by the two-dot chain line in Fig. 4), the first arm 41 does not cross the opening / closing path 20, and the second arm 42 crosses the opening / closing path 20. When the restraining member 7 is in the restraining position (the position indicated by the solid line in Fig. 4), the first arm 41 and the second arm 42 cross the opening / closing path 20.

[0052] As shown in FIG. 4, when the restraining member 7 is in the non-restraining position, the first arm 41 is disposed at a position (the position of the two-dot chain line in FIG. 4) that avoids the opening and closing path 20. When the restraining member 7 is in the non-restraining position, the +Y side end of the first arm 41 is disposed on the -Y side of the opening and closing path 20. When the restraining member 7 is in the non-restraining position, the first arm 41 has a restraining wall 43 that is inclined toward the closing direction Vc as viewed from the height direction. The restraining wall 43 is a portion that restrains the support body 37 (see FIG. 3) when the door is in the fully closed position. The restraining wall 43 forms the inner surface of a groove 44 formed in the first arm 41.

[0053] The second arm 42 is disposed spaced apart in the closing direction Vc from the first arm 41. The second arm 42 has a first surface 45 that is perpendicular to the inclined portion 22 when the restraining member 7 is located in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4), and a second surface 46 that is perpendicular to the inclined portion 22 when the restraining member 7 is located in the restraining position (the position indicated by the solid line in FIG. 4).

[0054] The first surface 45 is connected to the second surface 46 so as to be inclined toward the +X direction when viewed from the height direction. When the restraining member 7 is in the non-restraining position (the position of the two-dot chain line in FIG. 4), the first surface 45 crosses the +Y side portion of the inclined portion 22 (the portion not crossed by the second surface 46). When the restraining member 7 is in the restraining position (the position of the solid line in FIG. 4), the first surface 45 does not cross the inclined portion 22. When the restraining member 7 is in the restraining position, the first surface 45 is positioned on the +X side of the inclined portion 22.

[0055] The second surface 46 constitutes the inner surface of a U-shaped opening 47 formed in the restraining member 7. When the restraining member 7 is in the non-restraining position (the position of the two-dot chain line in FIG. 4), the second surface 46 crosses the -Y side portion of the inclined portion 22 (the portion not crossed by the first surface 45). When the restraining member 7 is in the restraining position (the position of the solid line in FIG. 4), the second surface 46 crosses the entire inclined portion 22.

[0056] The restraining member 7 has a held portion 48 that is held by the locking mechanism 8. The held portion 48 is provided on the opposite side of the shaft 39 from a portion that restrains the rotating body 36 (for example, a portion where the second arm 42 is provided). The held portion 48 extends along a direction perpendicular to the shaft 39 when viewed from the height direction. When the restraining member 7 is in the restraining position (the position indicated by the solid line in FIG. 4), the held portion 48 extends in the -X direction from a portion closer to the shaft 39. The held portion 48 is formed integrally with the restraining member 7 from the same material.

[0057] The restraining member 7 is provided with a pushing member 50 that pushes a switch 51 when the restraining member 7 is in the restraining position. For example, the switch 51 is a switch that detects that the door is locked in the fully closed position. The pushing member 50 is provided on the closing direction Vc side of the shaft 39. The pushing member 50 is provided on the opposite side of the shaft 39 to the held portion 48.

[0058] The pressing member 50 is detachably attached to the restraining member 7. The pressing member 50 has an elongated hole 52 aligned in the rotational direction (circumferential direction of the shaft 39) of the restraining member 7. The pressing member 50 is attached to the restraining member 7 by a plurality of bolts 53 (for example, two in this embodiment) aligned along the elongated hole 52.

[0059] The locking mechanism 8 holds the restraining member 7 in the restraining position (position indicated by the solid line in FIG. 4). As shown in FIG. 2, the locking mechanism 8 includes a lever 59 that swings by a driving force from a driving source 6 (see FIG. 1). The lever 59 is connected to the driving source 6 via a link mechanism 60 that includes an arm 61 and a rod 62 (see FIG. 1).

[0060] When the restraining member 7 moves to the restraining position, the lever 59 is pushed by the held portion 48 of the restraining member 7 (specifically, the portion extending upward from the tip of the held portion 48), and the lever 59 moves in the direction of the arrow Lm in Fig. 2. Then, a latch (not shown) inside the locking mechanism 8 is locked, and the held portion 48 of the restraining member 7 is supported by the lever 59. As a result, the rotating body 36 and the support body 37 are restrained by the restraining member 7 when the door is in the fully closed position, and the door is locked (locked state).

[0061] On the other hand, when the arm 61 is pulled by the driving force from the driving source 6, the latch inside the lock mechanism 8 is unlocked, and the lever 59 moves in the direction opposite to the direction of the arrow Lm in FIG. 2. Then, the held portion 48 of the restraining member 7 is released from support by the lever 59. As a result, the elastic force (restoring force) of the torsion spring 40 causes the restraining member 7 to return to the non-restrained position (the position indicated by the two-dot chain line in FIG. 4). As a result, the restraining of the rotating body 36 and the support body 37 by the restraining member 7 is released, and the door is unlocked (unlocked state).

[0062] Fig. 4 is an explanatory diagram of the operation of the restraining member 7 of the first embodiment. In Fig. 4, the restraining member 7 located at the restraining position is indicated by a solid line, and the restraining member 7 located at the non-restraining position is indicated by a two-dot chain line. An elastic force from the torsion spring 40 is constantly applied to the restraining member 7. Therefore, in a state where no external force is acting on the restraining member 7, the restraining member 7 is held in the non-restraining position (the position indicated by the two-dot chain line in FIG. 4). When the restraining member 7 is in the non-restraining position, the rotating body 36 and the support body 37 are allowed to move integrally with the door by the driving force from the driving source 6 (see FIG. 1).

[0063] When the door is opened or closed, the rotating body 36 (see FIG. 3) rolls along the opening / closing path 20 while being guided by the guide rail 5. Specifically, when the door 2 is closed from the fully open position, the rotating body 36 first moves straight along the straight portion 21 (see FIG. 2), but then moves inward in the width direction (specifically, diagonally including the width direction) along the inclined portion 22. In this way, the moving direction of the rotating body 36 changes between the beginning and the end of its movement in the closing direction. On the other hand, the support 37 (see FIG. 3) moves along a path that is spaced below the opening / closing path 20 so as not to come into contact with the guide rail 5 when the door is opened or closed.

[0064] When the rotating body 36 moves in the closing direction Vc along the opening / closing path 20, the rotating body 36 first comes into contact with the second arm 42 (the second arm 42 indicated by the two-dot chain line in FIG. 4) that crosses the opening / closing path 20. Then, when the rotating body 36 moves further in the closing direction Vc along the opening / closing direction, the rotating body 36 pushes the second arm 42 in the closing direction Vc against the elastic force of the torsion spring 40. As the second arm 42 is pushed in the closing direction Vc by the rotating body 36, the restraining member 7 moves (rotates) from the non-restrained position (the position indicated by the two-dot chain line in FIG. 4) to the restrained position (the position indicated by the solid line in FIG. 4).

[0065] When the restraining member 7 moves to the restraining position (position indicated by solid lines in FIG. 4), the lever 59 is pressed by the held portion 48 of the restraining member 7. This causes the lever 59 to move in the direction of the arrow Lm in FIG. 2. This locks the internal latch of the locking mechanism 8. By locking the latch, the locking mechanism 8 uses the lever 59 (see FIG. 2) to hold the held portion 48 of the restraining member 7, which is positioned at the fully closed position (restraining position) of the door.

[0066] When the restraining member 7 is located at the restraining position, the first arm 41 and the second arm 42 each cross the opening / closing path 20. As shown in Fig. 3, when the restraining member 7 is located at the restraining position, the first arm 41 restricts the rotating body 36 and the support body 37 from moving in the direction opposite to the closing direction Vc along the opening / closing path 20. When the restraining member 7 is located at the restraining position, the second arm 42 restricts the rotating body 36 from moving further in the direction of arrow Vc along the opening / closing direction. When the restraining member 7 is located at the restraining position, the restraining wall 43 of the first arm 41 restricts the support 37 from moving in the direction opposite to the arrow Vc.

[0067] In this way, the rotating body 36 and the support body 37 are restrained by the restraining member 7 when the door is in the fully closed position. The door is locked (locked state) when the rotating body 36 and the support body 37 are restrained by the restraining member 7. When the restraining member 7 is in the restraining position, the switch 51 is pressed by the pushing member 50 (see FIG. 4). This allows detection that the door is locked in the fully closed position.

[0068] On the other hand, when the door is changed from a locked state to an unlocked state, the arm 61 (see FIG. 2) is pulled by the driving force from the driving source 6. Then, the latch inside the lock mechanism 8 is unlocked, and the lever 59 moves in the opposite direction to the direction of the arrow Lm in FIG. 2. Then, the held portion 48 of the restraining member 7 is released from support by the lever 59. As a result, the restraining member 7 returns to the unrestrained position (the position indicated by the two-dot chain line in FIG. 4) by the elastic force (restoring force) of the torsion spring 40. The rotating body 36 and the support body 37 (see FIG. 3) are released from the restraint by the restraining member 7, and are thus able to move in the opposite direction to the closing direction Vc along the opening / closing path 20. This releases the door from being locked (unlocked state).

[0069] As described above, the plug door device 1 according to the present embodiment includes the guide rail 5 that defines the opening / closing path 20 of the door 2 for opening and closing the vehicle entrance 15, the driving source 6 for moving the door 2, the rotating body 36 that moves together with the door 2 by the driving force from the driving source 6 and rolls along the opening / closing path 20 while being guided by the guide rail 5 when the door 2 is opened or closed, the restraining member 7 that is pushed by the rotating body 36 when the rotating body 36 moves along the opening / closing path 20 in the closing direction Vc, thereby moving from a non-restraining position that does not restrain the door 2 to a restraining position that restrains the rotating body 36 at the fully closed position of the door 2, and the lock mechanism 8 that holds the restraining member 7 located at the restraining position. The restraining member 7 is disposed offset in the height direction of the vehicle with respect to the guide rail 5. The restraining member 7 includes a first arm 41 and a second arm 42 that are disposed in order in the closing direction Vc. When the restraining member 7 is disposed in the non-restraining position, the first arm 41 does not cross the opening / closing path 20, and the second arm 42 crosses the opening / closing path 20. When the restraining member 7 is in the restraining position, the first arm 41 and the second arm 42 cross the opening / closing path 20. The opening / closing path 20 includes a straight portion 21 along the front-rear direction of the vehicle and an inclined portion 22 inclined with respect to the straight portion 21. The second arm 42 includes a first surface 45 perpendicular to the inclined portion 22 when the restraining member 7 is in the non-restraining position, and a second surface 46 perpendicular to the inclined portion 22 when the restraining member 7 is in the restraining position. The restraining member 7 is provided rotatably about a shaft 39 extending in the height direction of the vehicle. The restraining member 7 includes a held portion 48 that is provided on the opposite side of the shaft 39 from the portion that restrains the rotating body 36 and is held by the lock mechanism 8. The held portion 48 is formed integrally with the restraining member 7 by the same member. The restraining member 7 is provided with a push member 50 that presses a switch 51 when the restraining member 7 is in the restraining position. The plug door device 1 includes a torsion spring 40 wound around an axis 39 and applying an elastic force to the restraining member 7 so that the restraining member 7 is maintained in the non-restraining position. The plug door device includes a support 37 that moves integrally with the door 2 by the driving force from the drive source 6 and is provided at a distance from the rotating body 36 so as not to come into contact with the guide rail 5 when the door 2 is opened or closed.The restraining member 7 has a restraining wall 43 which is inclined toward the closing direction Vc when viewed from the height direction of the vehicle and which restrains the support body 37 when the door is in the fully closed position.

[0070] According to this configuration, the restraining member 7 can be moved to the restraining position (position where the door 2 is locked in the fully closed position) by utilizing the driving force of the driving source 6 (door driving source) for moving the door 2. Therefore, no actuator other than the door driving source is required for moving the restraining member 7. Therefore, energy can be saved. However, an actuator (not shown) for locking the movement of the restraining member 7 is necessary. In addition, by providing a rotating body 36 that rolls along the opening / closing path 20 while being guided by the guide rail 5 when the door 2 is opened or closed, friction with the guide rail 5 is reduced by the rotating body 36, so that the rotating body 36 can be moved smoothly from the non-constrained position to the constrained position. In addition, since the restraining member 7 is rotatably arranged around an axis 39 extending in the height direction of the vehicle, no space is required in the height direction to allow the rotation of the restraining member 7, and therefore the restraining member 7 can be made smaller in height. In addition, the restraining member 7 is provided on the opposite side of the shaft 39 from the part that restrains the rotating body 36 and is provided with a held part 48 that is held by the locking mechanism 8. Since the held part 48 and the part that restrains the rotating body 36 are separated from each other by the shaft 39, sufficient space can be secured for the arrangement of the locking mechanism 8, and the freedom of arrangement of the locking mechanism 8 is improved. In addition, since the held portion 48 is integrally formed from the same material as the restraining member 7, the number of parts can be reduced and costs can be reduced compared to a case in which the held member held by the locking mechanism 8 is provided separately from the restraining member 7. In addition, the restraint member 7 is provided with a pushing member 50 that pushes the switch 51 when the restraint member 7 is in the restraining position, so that the position at which the restraint member 7 presses the switch 51 can be adjusted by changing the installation position of the pushing member 50. In addition, the restraining member 7 is provided with a support 37 that moves together with the door due to the driving force from the drive source 6 and is spaced apart from the rotating body 36 so as not to come into contact with the guide rail 5 when the door is opened or closed, and the restraining member 7 is inclined toward the closing direction Vc when viewed from the height direction of the vehicle and has a restraining wall 43 that restrains the support 37 when the door 2 is in the fully closed position. Therefore, even if the rotating body 36 should come off, the support 37 is restrained by the restraining wall 43, so that the door 2 can be maintained in a locked state. In addition, by disposing the restraining member 7 offset in the vehicle height direction relative to the guide rail 5, the shape of the guide rail 5 can be made freely, thereby improving the degree of freedom in designing the guide rail 5. In addition, the restraining member 7 includes a first arm 41 and a second arm 42 arranged in this order in the closing direction Vc, and when the restraining member 7 is located in the non-restraining position, the first arm 41 does not cross the opening / closing path 20, and the second arm 42 crosses the opening / closing path 20, so that when the restraining member 7 is located in the non-restraining position, the second arm 42 is pushed by the rotating body 36, thereby allowing the rotating body 36 to move from the non-restraining position to the restraining position. On the other hand, when the restraining member 7 is located in the restraining position, the first arm 41 and the second arm 42 cross the opening / closing path 20, so that when the restraining member 7 is located in the restraining position, the rotating body 36 can be restrained by the first arm 41 and the second arm 42. In addition, the opening / closing path 20 includes a straight portion 21 along the front-rear direction of the vehicle and an inclined portion 22 inclined with respect to the straight portion 21, and the second arm 42 includes a first surface 45 perpendicular to the inclined portion 22 when the restraining member 7 is located in the non-restraining position, so that when the restraining member 7 is located in the non-restraining position, the first surface 45 of the second arm 42 is pushed by the rotating body 36, thereby allowing the rotating body 36 to move from the non-restraining position to the restraining position. On the other hand, the second arm 42 includes a second surface 46 perpendicular to the inclined portion 22 when the restraining member 7 is located in the restraining position, so that when the restraining member 7 is located in the restraining position, the rotating body 36 can be restrained by the second surface 46 of the second arm 42. In addition, by providing a torsion spring 40 that applies an elastic force to the restraining member 7 so that the restraining member 7 is kept in the non-restraining position, the elastic force of the torsion spring 40 can be used to keep the restraining member 7 in the non-restraining position, so that the rotating body 36 can smoothly push the restraining member 7 that is located in the non-restraining position. In addition, since the torsion spring 40 is wound around the shaft 39, the arrangement space for the torsion spring 40 can be prevented from becoming excessively large.

[0071] <Second embodiment> Fig. 5 is a bottom view of a plug door device 201 of the second embodiment. Fig. 5 is a bottom view corresponding to Fig. 4. In Fig. 5, the restraining member 7 located in the restraining position is indicated by a solid line, and the restraining member 7 located in the non-restraining position is indicated by a two-dot chain line. In the above-described first embodiment, an example has been described in which the elastic member is a torsion spring 40 wound around the shaft 39 (see FIG. 2), but the present invention is not limited to this. For example, as shown in FIG. 5, the elastic member may be a compression spring 240 that is provided so as to be compressible in a direction intersecting the shaft 39. In FIG. 5, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0072] As shown in FIG. 5, the guide rail 5 is provided with a first pin 241 extending in the height direction. The restraining member 7 is provided with a second pin 242 extending parallel to the first pin 241. One end of the compression spring 240 is connected to the guide rail 5 via the first pin 241. The other end of the compression spring 240 is connected to the restraining member 7 via the second pin 242. Hereinafter, the position where the central axis Ac of the compression spring 240 overlaps with the center (axis) of the shaft 39 as viewed from the height direction is also referred to as the "boundary position Bp." The boundary position Bp corresponds to an imaginary straight line passing through the center of the first pin 241 and the axis of the shaft 39 as viewed from the height direction.

[0073] When the rotor 36 moves to the unconstrained position (when the rotor 36 is movable along the opening / closing path 20), the central axis Ac of the compression spring 240 is located on the opposite side of the boundary position Bp to the closing direction Vc as viewed in the height direction (the position indicated by the two-dot chain line in FIG. 5). On the other hand, when the rotor 36 is located at the constrained position, the central axis Ac of the compression spring 240 is located on the side of the closing direction Vc from the boundary position Bp as viewed in the height direction (the position indicated by the solid line in FIG. 5).

[0074] According to this configuration, a compression spring 240 is provided that is compressible in a direction intersecting the axis 39, one end of the compression spring 240 is connected to the guide rail 5, and the other end of the compression spring 240 is connected to the restraining member 7. When the rotating body 36 moves to the unrestrained position, the central axis Ac of the compression spring 240 is located on the opposite side of the closing direction Vc from the boundary position Bp where the central axis Ac overlaps with the axis 39 as viewed from the height direction, and when the rotating body 36 is located in the restrained position, it is located on the side of the closing direction Vc from the boundary position Bp as viewed from the height direction. Therefore, the direction in which the spring force of the compression spring 240 is applied to the restraining member 7 can be changed depending on the moving position of the rotating body 36.

[0075] <Third embodiment> Fig. 6 is a perspective view of the plug door device of the third embodiment. Fig. 7 is a bottom view of the plug door device of the third embodiment. In Fig. 7, the restraining member 307 located in the restraining position is shown by a solid line, and the restraining member 307 located in the non-restraining position is shown by a two-dot chain line. In the above-described first embodiment, an example (see FIG. 2) has been given and described in which the restraining member 7 is disposed offset in the height direction relative to the guide rail 5, but this is not limiting. For example, as shown in FIG. 6, at least a portion of the restraining member 307 may be disposed within a range in the height direction of the guide rail 5. Here, the range in the height direction of the guide rail 5 means a range between the uppermost end and the lowermost end of the guide rail 5. In FIGS. 6 and 7, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and detailed descriptions thereof will be omitted.

[0076] 7, the restraining member 307 has a guide wall 371 that comes into contact with the rotating body 36 at the non-restraining position (the position indicated by the two-dot chain line in FIG. 7) and guides the movement of the rotating body 36 along the opening and closing path 20. When the restraining member 307 is located at the non-restraining position, the guide wall 371 is curved in an arc shape along the inclined portion 22 of the opening and closing path 20 when viewed from the height direction. On the other hand, when the restraining member 307 is in the restraining position (the position indicated by the solid line in FIG. 7), the guide wall 371 functions as a restraining wall that restrains the rotating body 36 from moving along the opening / closing path 20 in the direction opposite to the closing direction Vc.

[0077] 6, the restraining member 307 includes a pressing portion 372 that presses the switch 51 when the restraining member 307 is in the restraining position. The pressing portion 372 is formed integrally with the restraining member 307 from the same material.

[0078] It should be noted that the plug door device 301 of this embodiment does not include the support body 37 (see FIG. 3). Therefore, the restraining member 307 does not include the restraining wall 43 (see FIG. 3) that restrains the support body 37.

[0079] According to this configuration, at least a portion of the restraining member 307 is positioned within the vehicle height range of the guide rail 5, so that no space is required in the height direction to position the restraining member 307, making it possible to reduce the size in the height direction. In addition, the restraining member 307 is provided with a guide wall 371 that contacts the rotating body 36 in the non-restrained position and guides the movement of the rotating body 36 along the opening / closing path 20, so that the rotating body 36 can be moved along the opening / closing path 20 by the guide rail 5 or the guide wall 371, thereby allowing the rotating body 36 to be moved smoothly from the non-restrained position to the restrained position. In addition, the restraint member 307 is provided with a pushing portion 372 that pushes the switch 51 when the restraint member 307 is in the restraining position, and the pushing portion 372 is integrally formed from the same material as the restraint member 307. This makes it possible to reduce the number of parts and achieve lower costs compared to a case in which a pushing member that pushes the switch 51 is provided separately from the restraint member 307. In addition, since the plug door device 301 does not have a support member 37, the number of parts can be reduced, leading to lower costs. In addition, since the restraining member 307 does not have the restraining wall 43 that restrains the support 37, the shape of the restraining member 307 can be freely made, which improves the degree of freedom in designing the restraining member 307. Note that in this embodiment, instead of the support 37, a member that can hold the door 2 in the locked state even if the rotating body 36 comes off may be provided.

[0080] The portion of the restraint member 307 within the height direction range of the guide rail 5 in the third embodiment is not particularly limited, but from the viewpoint of reducing the size in the height direction, it is preferable that the entire restraint member 307 is arranged within the height direction range of the guide rail 5.

[0081] 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.

[0082] In the above embodiment, an example has been described in which the restraining member 7 (307) is provided rotatably about the shaft 39 extending in the height direction of the vehicle, but this is not limiting. For example, the restraining member may be provided movable in both the front-rear direction and the width direction of the vehicle. For example, the moving direction of the restraining member can be changed according to required specifications.

[0083] In the above-described embodiment, an example (see FIG. 2) has been described in which the restraining member 7 is provided on the opposite side of the shaft 39 from the portion that restrains the rotating body 36 and includes the held portion 48 that is held by the locking mechanism 8, but this is not limiting. For example, the held portion 48 may be provided on the same side of the restraining member 7 as the portion that restrains the rotating body 36. For example, the installation position of the held portion 48 can be changed according to required specifications.

[0084] In the above-described embodiment, an example (see FIG. 2) has been given in which the held portion 48 is integrally formed from the same material as the restraining member 7, but this is not limiting. For example, the held portion 48 may be formed from a material different from the restraining member 7. For example, the form of the held portion 48 can be changed according to required specifications.

[0085] In the above-described embodiment, an example has been described in which the restraining member 7 is provided with the pressing member 50 that presses the switch 51 when the restraining member 7 is in the restraining position (see FIG. 2), but this is not limited to this. For example, the restraining member 7 does not have to be provided with the pressing member 50. For example, the pressing member 50 may be provided on a member different from the restraining member 7. For example, the installation position of the pressing member 50 can be changed according to required specifications.

[0086] In the above-described embodiment, an example has been described in which the moving member is a rotating body 36 that rolls along the opening / closing path 20 (see FIG. 3), but this is not limiting. For example, the moving member does not have to be a rotating body 36 (roller). For example, the moving member may be a pin that is fixed to the connecting member 35 so as not to rotate. For example, the form of the moving member can be changed according to the required specifications.

[0087] In the above-described embodiment, the plug door device has been described as including an elastic member that applies an elastic force to the restraining member so that the restraining member is maintained in the unrestrained position, but this is not limiting. For example, the plug door device may not include an elastic member. For example, the restraining member may be maintained in the unrestrained position by the weight of the restraining member itself. For example, the restraining member may be maintained in the unrestrained position by the weight of a weight connected to the restraining member. For example, the manner in which the restraining member is maintained in the unrestrained position can be changed according to the required specifications.

[0088] 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 entrance and exit of a railroad car, 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 car. For example, the plug door device may be provided with a single-sliding door.

[0089] 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. [Explanation of symbols]

[0090] Reference Signs List 1,201,301...plug door device, 2...door, 5...guide rail, 6...driving source, 7,307...restraint member, 8...lock mechanism, 15...entrance / exit, 20...opening / closing path, 21...straight portion, 22...inclined portion, 36...rotating body (moving member), 39...shaft, 40...torsion spring (elastic member), 41...first arm, 42...second arm, 45...first surface, 46...second surface, 48...held portion, 50...pushing member, 51...switch, 240...compression spring (elastic member), 371...guide wall, Ac...central axis, Bp...boundary position, Vc...closing direction

Claims

1. A guide rail that defines a path for opening and closing a door for opening and closing a boarding / alighting entrance of a vehicle; A drive source for moving the door; a moving member that moves together with the door by a driving force from the driving source and moves along the opening and closing path while being guided by the guide rail when the door is opened or closed; a restraining member that is pushed by the moving member when the moving member moves in a closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the moving member when the door is in a fully closed position; a locking mechanism for holding the restraining member in the restraining position; Equipped with The restraining member is disposed offset in a height direction of the vehicle with respect to the guide rail, The restraining member includes a first arm and a second arm arranged in sequence in the closing direction, When the restraining member is located at the non-restraining position, the first arm does not cross the opening / closing path, and the second arm crosses the opening / closing path; When the restraining member is located at the restraining position, the first arm and the second arm cross the opening and closing path, the opening / closing path includes a straight portion along a front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, A plug door device, wherein the second arm includes a first surface perpendicular to the inclined portion when the restraining member is positioned in the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is positioned in the restraining position.

2. At least a portion of the restraining member is disposed within a range of the guide rail in the height direction of the vehicle. The plug door apparatus according to claim 1 .

3. The restraining member includes a guide wall that contacts the moving member in the unrestrained position to guide the movement of the moving member along the opening / closing path. The plug door device according to claim 2.

4. The restraining member is provided rotatably about an axis extending in the height direction of the vehicle. A plug door device according to any one of claims 1 to 3.

5. The restraining member is provided on the opposite side of the shaft from the portion that restrains the moving member, and includes a held portion that is held by the locking mechanism. The plug door device according to claim 4.

6. The held portion is integrally formed with the restraining member by the same material. The plug door device according to claim 5.

7. The restraining member is provided with a pressing member that presses a switch when the restraining member is in the restraining position. A plug door device according to any one of claims 1 to 6.

8. the moving member is a rotating body that is rotatable about an axis extending in a height direction of the vehicle and rolls along the opening / closing path, The shape of the rotating body is circular when viewed from the height direction. A plug door device according to any one of claims 1 to 7.

9. and an elastic member that applies an elastic force to the restraining member so that the restraining member is maintained in the non-restraining position. A plug door device according to any one of claims 1 to 8.

10. The restraining member is provided rotatably about an axis extending in a height direction of the vehicle, The elastic member is a torsion spring wound around the shaft. The plug door apparatus according to claim 9.

11. The restraining member is provided rotatably about an axis extending in a height direction of the vehicle, the elastic member is a compression spring that is provided so as to be compressible in a direction intersecting the axis, One end of the compression spring is connected to the guide rail, The other end of the compression spring is connected to the restraining member, When the movable member moves to the unconstrained position, the central axis of the compression spring is located on the opposite side of the closing direction from a boundary position where the central axis overlaps with the axis as viewed from the height direction, and when the movable member is located at the constrained position, the central axis of the compression spring is located on the side of the closing direction from the boundary position as viewed from the height direction. The plug door apparatus according to claim 9.

12. a second moving member that moves together with the door by a driving force from the driving source and is provided at a distance from the moving member so as not to come into contact with the guide rail when the door is opened or closed; The restraining member has a restraining wall that is inclined toward the closing direction when viewed from a height direction of the vehicle and that restrains the second moving member when the door is in the fully closed position. A plug door arrangement according to any one of claims 1 to 11.

13. A guide rail that defines a path for opening and closing a door for opening and closing a boarding / alighting entrance of a vehicle; A drive source for moving the door; a rotor that moves together with the door by a driving force from the driving source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed; a restraining member that is pushed by the rotating body when the rotating body moves in the closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is in a fully closed position; a lock mechanism for holding the restraining member in the restraining position, The rotating body is rotatable about an axis extending in a height direction of the vehicle, The rotating body has a circular shape when viewed from the height direction, The restraining member is disposed so as to be shifted in the height direction with respect to the guide rail, The restraining member includes a first arm and a second arm arranged in sequence in the closing direction, When the restraining member is located at the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, and when the restraining member is located at the restraining position, the first arm and the second arm cross the opening / closing path, the opening / closing path includes a straight portion along a front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, the second arm includes a first surface perpendicular to the inclined portion when the restraining member is in the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is in the restraining position, The restraining member is provided rotatably about an axis extending in the height direction, the restraining member includes a held portion that is provided on an opposite side of the shaft from a portion that restrains the rotating body and is held by the locking mechanism, The held portion is integrally formed with the restraining member by the same material, the restraining member is provided with a pressing member that presses a switch when the restraining member is located at the restraining position, a torsion spring wound around the shaft and applying a resilient force to the restraining member to maintain the restraining member in the unrestrained position; a second moving member that moves integrally with the door by a driving force from the driving source and is provided at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, The restraining member has a restraining wall that is inclined toward the closing direction when viewed from the height direction and that restrains the second moving member when the door is at the fully closed position. Plug door device.

14. A guide rail that defines a path for opening and closing a door for opening and closing a boarding / alighting entrance of a vehicle; A drive source for moving the door; a rotor that moves together with the door by a driving force from the driving source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed; a restraining member that is pushed by the rotating body when the rotating body moves in the closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is in a fully closed position; a lock mechanism for holding the restraining member in the restraining position, The rotating body is rotatable about an axis extending in a height direction of the vehicle, The rotating body has a circular shape when viewed from the height direction, The restraining member is disposed so as to be shifted in the height direction with respect to the guide rail, The restraining member includes a first arm and a second arm arranged in sequence in the closing direction, When the restraining member is located at the non-restraining position, the first arm does not cross the opening / closing path and the second arm crosses the opening / closing path, and when the restraining member is located at the restraining position, the first arm and the second arm cross the opening / closing path, the opening / closing path includes a straight portion along a front-rear direction of the vehicle and an inclined portion inclined with respect to the straight portion, the second arm includes a first surface perpendicular to the inclined portion when the restraining member is in the non-restraining position, and a second surface perpendicular to the inclined portion when the restraining member is in the restraining position, The restraining member is provided rotatably about an axis extending in the height direction, the restraining member includes a held portion that is provided on an opposite side of the shaft from a portion that restrains the rotating body and is held by the locking mechanism, The held portion is integrally formed with the restraining member by the same material, the restraining member is provided with a pressing member that presses a switch when the restraining member is located at the restraining position, Further comprising a compression spring provided so as to be compressible in a direction intersecting the axis, One end of the compression spring is connected to the guide rail, The other end of the compression spring is connected to the restraining member, a central axis of the compression spring is located on the opposite side of the closing direction from a boundary position where the central axis overlaps with the shaft as viewed from the height direction when the rotating body moves in the unconstrained position, and is located on the closing direction side from the boundary position as viewed from the height direction when the rotating body is located in the constrained position, a second moving member that moves integrally with the door by a driving force from the driving source and is provided at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, The restraining member has a restraining wall that is inclined toward the closing direction when viewed from the height direction and that restrains the second moving member when the door is at the fully closed position. Plug door device.

15. A guide rail that defines a path for opening and closing a door for opening and closing a boarding / alighting entrance of a vehicle; A drive source for moving the door; a rotor that moves together with the door by a driving force from the driving source and rolls along the opening / closing path while being guided by the guide rail when the door is opened or closed; a restraining member that is pushed by the rotating body when the rotating body moves in the closing direction along the opening / closing path to move from a non-restraining position that does not restrain the door to a restraining position that restrains the rotating body when the door is in a fully closed position; a lock mechanism for holding the restraining member in the restraining position, The rotating body is rotatable about an axis extending in a height direction of the vehicle, The rotating body has a circular shape when viewed from the height direction, At least a portion of the restraining member is disposed within a range of the guide rail in the height direction, the restraining member includes a guide wall that contacts the rotating body in the unrestrained position to guide the movement of the rotating body along the opening / closing path, The restraining member is provided rotatably about an axis extending in the height direction, the restraining member includes a held portion that is provided on an opposite side of the shaft from a portion that restrains the rotating body and is held by the locking mechanism, The held portion is integrally formed with the restraining member by the same material, the restraining member is provided with a pressing member that presses a switch when the restraining member is located at the restraining position, a torsion spring wound around the shaft and applying a resilient force to the restraining member to maintain the restraining member in the unrestrained position; a second moving member that moves integrally with the door by a driving force from the driving source and is provided at a distance from the rotating body so as not to come into contact with the guide rail when the door is opened or closed, The restraining member has a restraining wall that is inclined toward the closing direction when viewed from the height direction and that restrains the second moving member when the door is at the fully closed position. Plug door device.

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