JP2008174149A - Vehicle door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle door device capable of promptly releasing airtightness when a door part is opened. <P>SOLUTION: The vehicle door device is provided with a door 3 provided on a vehicle body side wall 1 and opening/closing a doorway 2; a door rail 11 provided along the vehicle body side wall 1 in a position separated inwardly from the doorway 2 and guiding the door 3 from the closing position opposing to the doorway 2 and the opening position where the door 3 is stored on the vehicle body side wall 1 or from the opening position to the closing position; a door driving part 13 for moving the door 3 to the forward/backward direction between the closing position and the opening position; a support part 12 for movably supporting the door 3 to the vehicle width direction; and door pressing parts 5 to 8 for pressing the door 3 supported by the support part 12 against the peripheral edge part of the doorway 2 to make the door 3 airtight during full closing of the door 3. The vehicle door device is further provided with airtightness release parts 33, 34 for forcedly separating the door 3 from the peripheral edge part of the doorway 2 in conjunction with door opening start operation when pressing by the pressing parts 5 to 8 is released and the door driving part 13 starts to move the door 3 toward the opening position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle door device, and more particularly, to a vehicle door device that closes an entrance and exits when the vehicle is fully closed to bring the vehicle into an airtight state.

  Conventionally, high-speed railway vehicles such as the Shinkansen have adopted airtight doors so that the air pressure inside the vehicle does not rapidly increase when entering a tunnel.

  As shown in FIG. 8, a general hermetic door has a door portion 91 that moves along a side wall 90 of the vehicle body. The door portion 91 includes a door fully opened position that is completely stored in a door pocket, and a doorway 90a. The door is moved between the fully closed position of the door.

  Specifically, the door portion 91 is suspended via a bracket 93 with respect to a guide rail 92 provided in the ceiling 91a above the entrance / exit 90a, and the traveling wheels 94 provided on the bracket 93 are guided by the guide rail 92. By rolling up, it can slide in the front-rear direction. The guide rail 92 can swing in the arrow ab direction around the support shaft 95.

  Reference numeral 96 denotes a pneumatic cylinder as a door opening / closing actuator, and its rod is connected to the bracket 93. Therefore, when the rod of the pneumatic cylinder 96 is extended, the door 91 is opened, and conversely, when the rod is contracted, the door 91 is closed.

  In addition, this type of hermetic door has four door presser cylinders 97a, 97b and 98a, 98b that extend at the same time in the direction of arrow c when the door 91 is closed, and the peripheral portion of the entrance / exit 90a. The door 91 is pressed against the hermetic seal 99 provided on the door, and the pressing force counteracts the shocking external pressure when entering the tunnel. (For example, refer to Patent Document 1).

Reference numeral 100 denotes a compression coil spring which stores an urging force when the door pressing cylinders 97a to 98b are extended, and moves the door portion 91 in a direction opposite to the arrow c direction by the urging force when the door pressing cylinders 97a to 98b are contracted. Move and release the airtightness.
JP-A-3-57764 (pages (2)-(3), FIG. 8)

  This type of hermetic door is required to be able to ensure a predetermined hermeticity when fully closed, and to quickly release the hermeticity when opened. The airtight door shown in FIG. 8 uses the restoring force of the compression coil spring 100 to release the airtightness. However, when the pressure inside the vehicle is higher than the outside air pressure, the pressure difference tends to prevent the airtight release. There is a problem that the restoring force is weakened by that amount, and the door opening operation is slowed by delaying the release of the airtightness.

  The present invention has been made in consideration of the above-described problems in conventional vehicle airtight doors, and provides a vehicle door device that can quickly release airtightness when the door portion is opened. It is an object of the present invention to provide a vehicle door device that can reliably improve the airtightness of the door portion by simple adjustment.

  The present invention includes a door that opens and closes an entrance / exit provided on the side wall of the vehicle body, and a closed position provided along the inner side surface of the vehicle body side wall that faces the entrance / exit from an open position stored in the vehicle body side wall. On the contrary, the door rail for guiding, the door driving means for moving the door in the front-rear direction between the closed position and the open position, the support means for supporting the door movably in the direction intersecting the door rail when viewed from the plane, In a vehicle door device comprising a door pressing means for moving the door supported by the supporting means further from the closed position toward the entrance / exit and pressing the peripheral edge thereof to bring it into an airtight state, the airtightness for releasing the airtightness of the door The airtight release means includes a guide body provided at a fixed distance from the side wall of the vehicle body toward the inside of the vehicle body, a guided body fixed to the inner surface of the door, and a guide for the guided body. Lead to the body The introduction portion guides the guided body to the guide body using the driving force of the door driving means when the pressing by the door pressing means is released and the door driving means starts the opening operation of the door. The door device for a vehicle is configured to forcibly separate the door fixing the guided body from the peripheral edge of the entrance / exit.

  In the present invention, the door rail, the door driving means and the supporting means may be arranged on either the upper side or the lower side of the door, and the airtight release means may be arranged on the other side of the upper side or the lower side of the door. it can.

  In the present invention, when a pressing rail is provided on the door rail as a support means and is disposed so as to descend toward the inside of the vehicle body, and a slide body that moves relative to the pressing rail, the door is attached to the slide body. The door can be supported and moved to its closed position by its own weight.

  In the present invention, when the guide body has a guide rail provided along the side wall of the vehicle body, the introduction portion can be configured to obliquely connect the guide rail and the guided body when viewed from the plane when the door is fully closed. .

  In the present invention, if the guided body is provided with a roller that rolls on the guide rail, when the door is manually opened, the door can be smoothly opened even if the door is pressed outward.

  In the present invention, when there are a plurality of cylinders as the pressing means and a cam lever that is rotated around the horizontal axis by each cylinder, the cam lever mounting angle tolerance on the side of the cam lever is based on the normal perpendicular to the inner surface of the door. Can be provided.

  In the present invention, when the door driving means and the pressing means have an air cylinder and a switching valve for controlling the air pressure discharged from the air cylinder, the air is supplied from the pressure source to the base that fixes the air cylinder and the switching valve. An air passage leading to at least one of the cylinder and the switching valve can be formed. As a result, the piping for supplying and discharging air pressure is eliminated, and the apparatus can be reduced in size.

  In the present invention, when the door rail, the door driving means, and the supporting means are disposed below the floor of the vehicle body as the lower side of the door, it is preferable that a supporting member is interposed vertically between the bottom frame to which the door rail is attached and the floor. .

  According to the present invention, when the door driving means opens the door, the airtight releasing means forcibly pulls the door away from the peripheral edge of the entrance / exit in conjunction with the door opening action. Even when the air pressure is higher than the external pressure, the airtight state can be quickly released to open the door.

  Further, according to the present invention, the pressing lever includes a cam lever that is rotated by a plurality of cylinders, and an index indicating an allowable error of the cam lever mounting angle is provided on a side surface of the cam lever with respect to a normal line orthogonal to the door inner surface. The cam lever can be positioned in a short time during construction, and the door can be accurately airtight during vehicle operation.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 shows an embodiment of a vehicle door device according to the present invention.

  In the present embodiment, it is difficult to secure a space for storing a door drive mechanism or the like in the upper part of the door device. For example, the present embodiment is applied to a leading vehicle such as a Shinkansen. .

  In the figure, a vehicle entrance / exit 2 is provided on a vehicle side wall 1, and the door 3 is opened / closed by moving a door 3 in the left / right direction (arrow A direction) along the vehicle side wall 1. . In the figure, the door 3 is fully opened.

  A window frame-like frame frame 4 is installed inside the vehicle body so as to face the door 3.

  This frame frame 4 has vertical frame portions 4a and 4b that connect the top plate and the bottom plate of the vehicle body on both the left and right sides of the entrance / exit 2, and four door pressing devices ( Door pressing means) 5 to 8 are arranged.

  Each device 5, 6, 7 and 8 is provided with cam levers 5a, 6a, 7a and 8a, respectively.

  After the door 3 is closed, the cam levers 5 a to 8 a of the door pressing device advance, and the door 3 is pressed against the airtight seal 9 provided at the peripheral edge of the entrance 2. In this way, the airtight door 3 is able to resist the shocking external pressure generated when entering the tunnel. In addition, 4c is an upper frame part which connects each upper part of the vertical frame parts 4a and 4b.

  On the inner wall of the door 3, the abutting plates 3 a to 3 d are attached at positions corresponding to the cam levers 5 a to 8 a in a state where the door 3 is closed.

  Reference numeral 10 denotes a floor plate, and a drive mechanism (door drive means) for opening and closing the door 3 is accommodated between the floor plate 10 and a vehicle body bottom plate (not shown).

  The drive mechanism includes a door rail 11 arranged parallel to the vehicle body side wall 1, a sliding portion 12 that slides on the door rail 11, and a pneumatic cylinder 13 that moves the sliding portion 12 in the direction of arrow A. The lower plate 3e of the door 3 is supported on the sliding portion 12.

  Next, the configuration of each unit will be described in detail.

  2 shows the drive mechanism shown in FIG. 1 as viewed from the direction of arrow B. FIG. 2 (a) shows a state before the door 3 is closed, and FIG. 2 (b) shows that the door 3 is closed. The state is shown.

  First, in FIG. 2A, reference numeral 14 denotes a board connecting the lower portions of the left and right vertical frames 4a and 4b. A rail 11, a pneumatic cylinder 13 and a pedestal 14a (described later) are fixed on the board 14. Has been. The substrate 14 also functions as a lower frame portion of the frame frame 4.

  The door rail 11 includes a belt-like mounting seat 11a fixed to the substrate 14 with bolts (not shown), and a door rail portion 11b attached to the concave groove formed in the mounting seat 11a via the bolt 15. It is composed of

  The sliding portion 12 that slides on the door rail portion 11b is fixed to the sliding block 12a having a concave groove that engages with the door rail portion 11b downward, and a bolt 16 on the sliding block 12a. It is comprised from the door press guide 12b.

  The door pressing guide 12b has a protruding portion 12c that protrudes in a bowl shape from the sliding block 12a toward the entrance / exit 2, and the upper surface of the protruding portion 12c is lowered horizontally toward the vehicle interior. It is formed on the inclined surface 12d. A pressing rail 12e is attached to the inclined surface 12d in the vehicle width direction. In the figure, 17 is a bolt for fixing the pressing rail 12e to the inclined surface 12d.

  The pressing rail 12e is provided with a slide block 12f that slides in the direction of arrow C using the pressing rail 12e as a guide, and the lower plate 3e of the door 3 is fixed to the slide block 12f.

  The slide block 12f can move along the pressing rail 12e. Therefore, both function as support means for supporting the door 3 so as to be movable in the vehicle width direction.

  The lower plate 3e is a vertical plate portion 3f connected to the lower end portion of the door 3, and an inclined plate portion that is bent in an L shape so as to go under the protruding portion 12c from the vertical plate portion 3f. It is composed of 3g.

  The inclination angle θ of the inclined plate 3g coincides with the inclination angle θ of the inclined surface 12d in the protruding portion 12c.

  With the above configuration, the door 3 can slide in the direction of the arrow C along the inclined pressing rail 12e. Therefore, when the door 3 is not pressed by the cam levers 5a to 8a of the door pressing devices 5 to 8, Will move diagonally downward (arrow D direction) and stop at the position shown in FIG.

  On the other hand, when the cam levers 5a to 8a of the door presser devices 5 to 8 are pushed out and press the door 3 toward the entrance / exit 2, the slide block 12f moves obliquely upward (in the direction of arrow E) along the pressing rail 12e. To do. As a result, the entrance 2 is closed by the door 3.

  In the figure, reference numeral 10a denotes a support plate (reinforcing support member), which is provided between the bottom frame 10a to which the door rail 11 is attached and the floor plate 10 in a vertical direction so as to support the floor plate 10.

  FIG. 3 shows the structure of the door pressing devices 5 to 8 as a representative of the door pressing device 5 and is viewed from the direction of arrow F in FIG.

  In FIG. 3, an auxiliary frame 4d for adjusting the mounting position of the door pressing device 5 is provided outside the vertical frame portion 4a, and a pneumatic cylinder 5b is fixed to the auxiliary frame 4d in the vertical direction.

  The tip of the rod 5c of the pneumatic cylinder 5b is connected to the rear end 5e of the cam lever 5a that swings in the direction of arrow G about the rotation shaft 5d. A roller 5f is provided at the tip of the cam lever 5a, and this roller 5f rolls on the contact plate 3a (see FIG. 1) when the door 3 is closed. Further, when the cam lever 5a moves to the retracted position indicated by the two-dot chain line, it is detected by the limit switch 18.

  FIG. 4 shows how to install the door pressing device 5.

  The cam lever 5a abutted against the abutting plate 3a has a center line AL connecting the center of the roller 5f and the center of the rotating shaft 5d with a normal line from the abutting plate 3a (at one point on the curved surface of the abutting plate 3a. The straight line perpendicular to the tangent of the curve in FIG. 2) is attached in a state in which it does not rotate beyond SL and is substantially parallel to normal SL.

  The cam lever 5a is arranged so as to satisfy this condition. However, conventionally, there is no means for confirming whether the mounting angle is within an allowable error range, and the door pressing device 5 is mounted and operated. Was done. Therefore, there was variation in the pressing force of the plurality of cam levers 5a.

  Therefore, in this embodiment, the cam lever 5a is provided with an index that can confirm whether or not it is within the allowable error range, so that the door pressing device 5 can be attached accurately and easily.

  The index is formed on the side surface of the cam lever 5a, and includes a shallow groove portion 5h cut out in a wedge shape by an angle θa from the upper edge 5g of the cam lever 5a in the pressed state.

  When positioning the cam lever 5a, the tape measure S is applied in a state where the roller 5f of the cam lever 5a is in contact with the contact plate 3a. If the lower edge line Slow of the curve S is within the wedge-shaped shallow groove portion 5h, it is temporarily fixed. The pneumatic cylinder 5b is fixed to the auxiliary frame 4d.

  On the other hand, if the lower edge line Slow of the curve S is outside the range of the wedge-shaped shallow groove portion 5h, the posture of the pneumatic cylinder 5b that is temporarily fixed is adjusted so as to be within the range of the shallow groove portion 5h.

  If such a procedure is followed, each door pressing device 5 can be fixed to the auxiliary frame 4d accurately and in a short time.

  FIG. 5 is a plan view of the drive mechanism described above.

  In the drawing, a pair of protrusions 12c are arranged in parallel on the left and right sides of a sliding block 12a that slides on the door rail 11, and the pressing rails 12e, 12e attached to the lower surface of the protrusion 12c are shown in FIG. As a guide, two slide blocks 12f and 12f are moved in the front-rear direction.

  The inclined plate portion 3g of the door 3 is fixed to the lower surface of the two slide blocks 12f, 12f so as to straddle the two slide blocks 12f, 12f.

  Accordingly, the door 3, the projecting portion 12c, and the sliding block 12a move in the left-right direction as a unit during the door opening / closing operation.

  A connection fitting 20 formed in an L shape toward the vehicle inner side is attached to the right end portion 12g of the sliding block 12a, and the connection fitting 20 is provided with an arm portion 20a having a through hole. .

  On the other hand, a pneumatic cylinder 13 is arranged in parallel with the door rail 11, and the male thread portion formed at the tip of the rod 13a uses a through-hole of the arm portion 20a in the horizontal direction using nuts 20a and 20c. It is fixed to the arm portion 20a.

  Therefore, when the rod 13a of the pneumatic cylinder 13 is extended, the sliding block 12a moves rightward on the door rail 11 via the connection fitting 20. When the extended rod 13a is reduced, the sliding block 12a moves on the door rail 11 in the left direction via the connection fitting 20. Thereby, the door 3 opens and closes.

  FIG. 6 shows the structure of the upper part of the door 3, wherein (a) is a plan view and (b) is a front view.

  In both figures, the door 3 indicated by a solid line indicates the position of the door 3 before the closed position airtight operation, and the door 3 indicated by a two-dot chain line indicates the position of the door 3 after the airtight operation.

  A door closing switch 30 is fixed to the left end portion of the upper frame portion 4 c via an L-shaped bracket 31, and a switch push plate 32 for turning on a contact 30 a of the door closing switch 30 is provided on the door 3. It is provided on the upper left side.

  The switch push plate 32 includes a plate portion 32a slightly protruding from the left upper edge of the door 3, and a push piece 32b extending in a hook shape in the left direction from the upper portion of the plate portion 32a. Is extended with an angle θ1 ahead of the imaginary line M in the front-rear direction so that the contact 30a is turned on when the door 3 moves to the fully closed position indicated by the two-dot chain line. It has become.

  In the process in which the door 3 is pressed in the direction of arrow H and is closed, the switch push plate 32 moves from the position indicated by the solid line to the position indicated by the two-dot chain line. A door closing switch 30 is arranged on this moving path.

  Further, in the present embodiment in which the drive mechanism is housed in the lower part of the floor board 10, the door closing switch 30 is arranged on the upper side of the door 3 to provide the following advantages. That is, in the configuration in which the door 3 is supported from below, if a foreign object is caught in the door 3, the gap becomes larger toward the upper side of the door 3. Therefore, if the door closing switch 30 is arranged on the upper part of the door 3 having the largest gap, the closed state of the door 3 can be detected with certainty.

  Further, a guided portion (guided body) 34 for guiding the door 3 to the guide rail portion (guide body) 33 during the door opening operation is attached to the right side of the switch push plate 32.

  The guide rail portion 33 is provided along the vehicle body side wall 1 on the vehicle body side away from the entrance / exit 2, and the front edge portion 35 a of the band plate-like plate 35 extending outward from the upper frame portion 4 c. It is fixed to.

  The left end portion 33a of the guide rail portion 33 is formed in an arc shape, and the leading end of the introduction portion 34a provided to protrude rightward from the guided portion 34 comes into contact with the left end portion 33a. ing. However, the door 3 at this time is pressed against the entrance 2 by the door pressing devices 5 to 8 and is in a fully closed state.

  The guided portion 34 having the guide rail portion 33 and the introduction portion 34 a functions as an airtight releasing means for releasing the airtightness when the door 3 is opened.

  Conventionally, as shown in FIG. 8, when the door 91 is fully closed, the compression coil spring 100 is compressed against the biasing force, and when the door 91 is opened, the compression coil spring 100 is restored. The door 91 is separated from the airtight seal portion 99 at the entrance / exit using force to release the airtightness. However, when the pressure inside the vehicle is higher than the outside air pressure, the pressure acts on the entire door 91, so that the door 91 is in close contact with the entrance / exit even after the pressing force by the door pressing devices 97 and 98 is released. Can happen. In this case, the door opening operation becomes slow.

  On the other hand, in this embodiment, as shown in FIG. 6, even when the door 3 is in close contact with the entrance / exit, if the door 3 is opened by extending the rod 13a of the pneumatic cylinder 13, the inclined surface is formed. The introduction portion 34a is in contact with the left end portion 33 of the guide rail portion 33 and moves the guided portion 34 in the direction opposite to the arrow H direction using the movement of the door 3 in the opening direction (right direction). The door 3 can be forcibly separated from the airtight seal 9 of the entrance 2. Therefore, even if the pressure inside the vehicle is higher than the outside air pressure, the door 3 can be quickly released and the door 3 can be opened.

  Also, as shown in FIG. 2, the door 3 moves in the direction of arrow D by its own weight when the pressing by the door pressing device 5 is released. It functions to support the pulling-out operation of the door 3 by the part 34, and therefore the door 3 can be pulled away with a small force.

  FIG. 7 shows a pneumatic circuit for driving the door pressing devices 5 to 8 and the driving mechanism described above.

  In the figure, the air pressure from the air pressure source 40 is supplied to the air pressure supply path 43 through the filter 41 and the door cock 42.

  A pneumatic cylinder 13 that opens and closes the door 3 and pneumatic cylinders 5 to 8 that drive the door pressing device 5 are connected to the pneumatic supply path 43.

  The direction and flow rate of the air pressure supplied to the pneumatic cylinder 13 are controlled by an electromagnetic switching valve 44.

  When the electromagnetic switching valve 44 pushes a door opening switch (not shown) of a door control panel provided in the vehicle, the door opening signal S1 acts on the solenoid 44a to switch to the position a, and when the door closing switch is pushed. The door closing signal S2 acts on the solenoid 44b to switch to the b position. When switching to the a position, air pressure is introduced into the head side 13b of the pneumatic cylinder 13 through the check valve 45a and the rod 13a extends, and when switching to the b position, air pressure is introduced to the rod side 13c of the pneumatic cylinder 13. The rod 13a shrinks.

  As shown in FIG. 4, the rod 13a is provided with a connection fitting 20 for opening and closing the door 3, so that the door 3 is opened and closed by the expansion and contraction of the rod 13a.

  In the figure, 45b is a closing speed adjusting screw, 45c is an opening speed adjusting screw, 46a is an opening cushion adjusting screw, and 46b is a closing cushion adjusting screw. Reference numeral 47 denotes a silencer.

  In addition, a supply / discharge electromagnetic valve 48 and a switching electromagnetic valve 49 are connected in series to the air pressure supply path 43 in the air flow direction.

  The supply / exhaust solenoid valve 48 is switched between the c position and the d position, and communicates air pressure at the c position and shuts off the air pressure at the d position.

  The air pressure that has passed through the position c is supplied to the switching electromagnetic valve 49, which switches between the e position (second switching position) and the f position (first switching position). At the position e, the air pressure is introduced into the downstream pressure reducing valve 50 and the outlet side pressure is reduced by a predetermined difference from the input side pressure, and then supplied to each of the pneumatic cylinders 5b to 8b. On the other hand, when the signal S3 is given to the solenoid 49a and the solenoid 49a is switched to the f position, the air pressure is directly supplied to the pneumatic cylinders 5b to 8b.

  That is, the supply / exhaust solenoid valve 48 generates a first pressing force that provides an airtight state, and the pressure reducing valve 50 generates a pressing force that is a predetermined amount lower than the first pressing force as a second pressing force, The switching electromagnetic valve 49 functions to switch the pressing force for pressing the door from the second pressing force to the first pressing force.

  The signal S3 is, for example, a vehicle speed detection signal that is output upon detection that the vehicle has reached a predetermined speed. The signal S4 for switching the supply / discharge electromagnetic valve 48 is given, for example, when the door closing switch 30 is on and the electromagnetic switching valve 44 is closing.

  In addition, 51 is a switching valve which is in a communication state (the state shown in FIG. 7) when the door is fully closed, 52a is a presser speed adjusting screw, and 52b is a slack speed adjusting screw.

  In the pneumatic circuit described above, the pressing force that presses the door 3 is switched by the switching electromagnetic valve 49. Therefore, when the door 3 is closed, the air pressure reduced by a predetermined amount, that is, the pressing force lower than the airtight pressing force is used. 3 can be closed, and even if an object or a part of the body is sandwiched between the doors 3, it can be removed by itself and safety can be improved. Further, when the vehicle starts to travel and reaches a predetermined speed, the door 3 is pressed by the airtight pressing force, and airtightness can be ensured.

  The electromagnetic valves 44, 48, 49 and the switching valve 51 described above are fixed on the pedestal 14a shown in FIG. 5. The electromagnetic valves 44, 48, 49 and the switching valves 51 are switched from the air pressure source 40 in the pedestal 14a. An air passage for supplying air pressure to the valve 51 is formed.

  More specifically, the pedestal 14a has a first piping portion Mo1 and a second piping portion Mo2 that are modularized as replaceable components, and the door piping solenoid valve unit V1 and the door presser electromagnetic are provided in the first piping portion Mo1. A valve unit V2 is attached, and a switching valve unit V3 is connected to the door presser electromagnetic valve unit V2.

  In the first and second piping portions Mo1 and Mo2, air passages that supply the air pressure source 40 to the units V1 and V2 are formed. Therefore, there is no need to route piping outside the pedestal 14a, and the door drive device can be made compact.

  The door driving means of the present invention is constituted by a pneumatic cylinder in the above embodiment, but is not limited thereto, and may be constituted by an electric motor and a ball screw connected to its output shaft.

  Further, in the above embodiment, the door pressing means of the present invention is configured by a pneumatic cylinder or the like, but is not limited thereto, and may be configured by a hydraulic cylinder that converts pneumatic pressure to hydraulic pressure and operates with the converted pressure oil. .

  In the above embodiment, the slide rail 12e is attached to the lower surface of the projecting portion 12c, thereby reducing the size of the lateral movement mechanism without being affected by dust. However, there is sufficient space under the floor to prevent dust. If so, the slide rail 12e can be attached to the upper surface or the side surface of the protruding portion 12c in an inclined state.

It is a perspective view showing the whole door device composition concerning the present invention. (a) is a B arrow view which expands and shows the case where a door exists in a closed position, (b) shows the case where a door exists in a fully closed position. It is F arrow line view which expands and shows the structure of the door pressing apparatus shown in FIG. It is explanatory drawing which shows the positioning method of the cam lever shown in FIG. It is a top view which shows the drive mechanism of a door. (a) is an enlarged plan view showing the configuration of the upper part of the door, and (b) is a front view thereof. It is a pneumatic circuit of a door drive mechanism and a door pressing device. It is side surface sectional drawing which shows the structure of the conventional airtight door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle side wall 2 Entrance / exit 3 Door 4 Frame frame 5-8 Door pressing device 5a-8a Cam lever 5a-8b Pneumatic cylinder 10 Floor board 11 Door rail 12 Sliding part 12b Door pressing guide 12c Protruding part 12d Inclined surface 12e Pressing rail 12f Press Slide block 13 Pneumatic cylinder 14 Substrate 14a Pedestal 33 Guide rail 34 Guided part 34a Introduction part

Claims (8)

A door that opens and closes the entrance / exit provided on the side wall of the vehicle body, and a closed position that is provided along the inner surface of the side wall of the vehicle body from the closed position facing the entrance / exit to the open position stored in the vehicle side wall or vice versa A door rail for guiding, a door driving means for moving the door in the front-rear direction between a closed position and an open position, and a support means for supporting the door movably in a direction crossing the door rail when seen from a plane. In the vehicle door device comprising: a door pressing unit that moves the door supported by the supporting unit from the closed position toward the entrance / exit and presses the peripheral edge of the door to make it airtight.
An airtight releasing means for releasing the airtightness of the door, and the airtight releasing means is provided with a guide body provided at a certain distance from the side wall of the vehicle body toward the inside of the vehicle body, and a cover fixed to the inner surface of the door. A guide body and an introduction portion that guides the guided body to the guide body, and the introduction portion is released when the pressing by the door pressing means is released and the door driving means starts opening the door. The guided body is guided to the guide body using the driving force of the door driving means, and the door fixing the guided body is forcibly separated from the peripheral edge of the entrance / exit. A vehicle door device.   The door rail, the door driving means, and the support means are arranged on either the upper side or the lower side of the door, and the airtight release means is arranged on the other side of the upper side or the lower side of the door. The vehicle door device according to claim 1.   The support means includes a pressing rail that is provided on the door rail and is disposed so as to be lowered toward the inside of the vehicle body, and a slide body that moves relative to the pressing rail, and the door includes the door. The vehicle door device according to claim 1, wherein the vehicle door device is supported and configured to move the door to the closed position by its own weight.   The guide body includes a guide rail provided along the side wall of the vehicle body, and the introduction portion is configured to connect the guide rail and the guided body obliquely when viewed from a plane when the door is fully closed. The vehicle door device according to any one of claims 1 to 3.   The vehicle door device according to claim 4, wherein the guided body includes a roller that rolls on the guide rail.   The pressing means has a plurality of cylinders and a cam lever that rotates around the horizontal axis by each cylinder, and an allowable error of the cam lever mounting angle on a side surface of the cam lever with reference to a normal perpendicular to the inner surface of the door The vehicle door apparatus of any one of Claims 1-5 in which the parameter | index which shows is provided.   The door driving means and the pressing means have an air cylinder and a switching valve for controlling the air pressure discharged from the air cylinder, and a pressure source is provided in a base for fixing the air cylinder and the switching valve. The vehicle door device according to any one of claims 1 to 6, wherein an air passage communicating with at least one of the air cylinder and the switching valve is formed.   The door rail, the door driving means, and the support means are disposed below the floor of the vehicle body as the lower side of the door, and a reinforcing support member is interposed in the vertical direction between the bottom frame to which the door rail is attached and the floor. The vehicle door device according to any one of claims 1 to 7.

Images