WO2011013847A2

WO2011013847A2 - Door structure for railway vehicle

Info

Publication number: WO2011013847A2
Application number: PCT/JP2010/063140
Authority: WO
Inventors: Atsushi Hamamoto; Takahiro Kawashima; Shinichi Miura; Mikio Hatano; Jozo Ishida
Original assignee: Kawasaki Jukogyo Kabushiki Kaisha; Narita Mfg., Ltd.
Priority date: 2009-07-28
Filing date: 2010-07-28
Publication date: 2011-02-03
Also published as: CN102548826B; KR101379067B1; JP2011025852A; TW201111208A; CN102548826A; TWI402193B; EP2459428A2; WO2011013847A3; EP2459428B1; JP5495652B2; KR20120123010A

Abstract

This invention is concerning a door structure for a railway vehicle having advantages to conventional door structures. The door structure for a railway vehicle is characterized by including a door frame having a hinge on one side portion, a door main body that is pivotally openable and closable in lateral direction and in a forward direction, and provided with a window and a first footboard portion covering the window in a forward full open state of a door, and an extension footboard portion that is folded to be storable on a vehicle interior side of the door main body in a close state of a door, and provided with an opening portion for window positioned on the vehicle interior side of the window in a close state of a door, and a second footboard portion covering the opening portion for window in a forward full open state of a door.

Description

[Title of the Invention]

DOOR STRUCTURE FOR RAILWAY VEHICLE

[Technical Field]

[0001]

The present invention relates to a door structure for a railway vehicle that is foldably disposed in an end panel of a railway vehicle. [Background Art]

[0002]

As a prior art technique of the door structure of this type, for example, Patent Document 1 proposes a door structure in which a hinged door frame for opening a gangway having a lower end rotatably supported in a body, which is normally locked to a vehicle and is opened outward in case of an emergency, is openably and closably provided in the gangway disposed in an end portion of the body, a hinged door, which is supported rotatably in a lateral direction of the hinged door frame, is attached to an opening portion formed in the hinged door frame, and walk means for emergency escape is provided in an inner face of the hinged door.

[0003]

In addition, Patent Document 2 proposes a door structure that is usable both in a normal case and in an emergency case. The door structure has a plug-in type door, a slide unit, a guide unit, a selection handle, and a two-tier sloped passage.

The slide unit is comprised of a slider that is movable in an opening and closing direction of the door, and a vertical rod that is provided advanceably and retreatably in a direction orthogonal to the slider, and has a tip rotatably connected to a hinge at a lower end portion of the door.

The guide unit is comprised of a lateral guide that is parallel with the opening and closing direction of the door, a vertical guide that perpendicularly intersects the lateral guide and is opened in a vehicle body, a branch piece that closes the opening of the vertical guide or the lateral guide, and an arm that has one end fixed to an upper end portion of the door and the other end provided with a roller capable of rolling the lateral and vertical guides.

The selection handle is provided rotatably to a normal use position and an emergency position, connected to the branch piece using a chain, and adapted to drive the branch piece in a closing direction of the lateral guide when the selection handle is rotated to the emergency position.

The two-tier sloped passage is foldably provided in the door, and includes a support unit that is coupled to the body via a supporting chain, a shock-absorbing chain that has one end attached to the door and the other end wound around a drum, an extension plate that has one end rotatably connected to an axle of the upper end portion of the door, and is engaged with the support unit and the shock-absorbing chain, and a shock absorption unit that pays out the sock-absorbing chain.

[0004] In any of the foregoing door structures described as the conventional art techniques, a window through which scenery outside a vehicle can be seen is not provided in the door that is opened and closed.

[0005]

As a conventional art technique of a unit having a window provided in a door for emergency escape, for example, Patent Document 3 proposes a door structure described below. The door structure includes a door with a window that has an upper end connected to a front central portion of a railway vehicle so as to be rotatable using an upper end portion of an opening portion serves as an axis, and has a lower end that is swung forwardly and upwardly to be opened. In the door structure, base ends of a pair of laterally arranged frames are rotatably connected to both-side lower end portions in the opening portion, the frames are foldable at a generally middle position in a longitudinal direction via a hinge such that the frames are inwardly folded over each other, a plurality of footboard members each having a constant width are continuously arranged between and along the frames to constitute a footboard face in the state where the frames are straightly extended. In the state where the frames are folded in two, the individual footboard members are moved to the side with the hinge portion, and stacked. Since the stacking position of the footboard members is located in a housing portion above the window of the door, and does not interfere with the window, in the state where the lower end of the door is rotated to the lower end portion in the opening portion and the opening portion is closed by the door, the scenery outside the vehicle can be seen through the window of the door.

[Citation List]

[Patent Literature]

[0006]

[Patent Literature 1]

Japanese Examined Patent Publication No. 04-59187

[Patent Literature 2]

Japanese Examined Patent Publication No. 07-25304

[Patent Literature 3]

European Patent Application No. 0776808

[Summary of Invention]

[Technical Problem]

[0007]

However, also in the foregoing door structure described in Patent

Document 3, there are the following problems to be solved.

[0008]

The door that is swung forwardly and upwardly to be opened and the slope with a pair of frames that constitute the footboard face in case of emergency escape and are folded in two via the hinge are constituted as individual independent units, and hence the structure is complicated.

[0009]

In the state where the door is swung forwardly and upwardly to be opened, the slope that is folded in two is positioned in the opening portion in its upright state so that smooth escape in emergency may be hindered.

[0010]

In the state where the door is opened, since the door extends in an almost horizontal and forward direction upwardly of the front of the vehicle, in a mode where two vehicles are closely faced each other, and a transfer is performed from one vehicle to the other vehicle, the doors that are swung forwardly and upwardly to be opened may interfere with each other.

[001 1]

In the event of emergency escape, it is necessary to perform two actions (operations) in which the door is swung forwardly and upwardly to be opened, and the folded frames are extended straight to continuously spread the footboard members to form the footboard face.

[0012]

The present invention has been achieved in view of the foregoing, and the present invention provides a door structure for a railway vehicle that is usable as a doorway in case of an emergency, and is capable of smoothly forming a slope for escape in a door with a window.

[Solution to Problem]

[0013]

To achieve the foregoing object, a door structure for a railway vehicle according to the present invention is a door structure for a railway vehicle provided in an opening portion in an end panel of the railway vehicle, characterized by including a door frame having a hinge on one side portion, a door main body that is pivotally openable and closable in a lateral direction of the railway vehicle while the hinge serves as an axis, pivotally openable and closable in a forward direction of the railway vehicle while a lower end portion of the door frame serves as an axis, and provided with a window and a first footboard portion covering the window in a forward full open state of the door, and an extension footboard portion that is folded to be storable on a vehicle interior side of the door main body in a close state of the door, and provided with an opening portion for window positioned on the vehicle interior side of the window in the close state of the door, and a second footboard portion covering the opening portion for window in the forward full open state of the door.

[0014]

According to the door structure for a railway vehicle of the present invention having the above-described configuration, since the door is constituted by integrating the door main body, the door frame, and the extension footboard portion together, the structure is simplified as compared with the prior art technique having the window in the door and, since a slope portion for escape is opened as the door together with the door when the door is opened, the slope portion for escape does not get in the way. In addition, since the door is opened in a forward and a lateral direction in the tip end face of the vehicle, the doors of two vehicles do not interfere with each other in a state where the tip ends of the two vehicles are closely faced each other and, consequently, it is possible to dispose a relatively short gangway footplate to bridge between the vehicles to transfer passengers between the vehicles, as illustrated in FIGS. 13 and 14. Further, the window of the door main body and the opening portion for window of the extension footboard portion are cleared in the close state of the door (a normal state, and a state where the door main body closes the opening portion) and, in the forward full open state of the door (an emergency escape state and a state where the door main body is opened forward using the lower end portion of the door frame serves as the axis, and the folded extension footboard portion is opened forwardly of the opened door main body), the first footboard portion covers the window and the second footboard portion covers the opening for window (by a link mechanism and the action of gravity in an embodiment) to constitute a footboard for escape (slope) so that it is possible to smoothly escape irrespective of the presence or absence of the window.

[Advantageous Effects of Invention]

[0015]

As has been described thus far, the door structure for a railway vehicle of the present invention is usable as a doorway in case of an emergency, and is capable of smoothly forming a slope for escape in a door with a window.

[Brief Description of Drawings]

[0016]

[Fig. 1]

FIG. 1 is an elevational view illustrating an end panel on a tip side of a railway vehicle including a door structure according to an embodiment of the present invention. [Fig. 2]

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1.

[Fig- 3]

FIG. 3 is a cross-sectional view taken along the line B-B of FIG. 1. [Fig. 4]

FIG. 4 is an elevational view of a circumferential area of a door in a central portion of a tip end face of the railway vehicle when viewed from the inside of the vehicle.

[Fig. 5]

FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 4.

[Fig. 6]

FIGS. 6 (a) to 6(c) illustrate a locking mechanism of a door main body 7, in which FIG. 6(a) is a cross-sectional view illustrating a locked state taken along the line F-F of FIG. 4, FIG. 6(b) is a cross-sectional view taken along the line J-J of FIG. 6(a), and FIG. 6(c) is a cross- sectional view illustrating an unlocked state taken along the line G-G; FIGS. 6(d) and 6(e) illustrate a locking mechanism of a door 5, in which FIG. 6(d) is a cross- sectional view illustrating a locked state taken along the line H-H of FIG. 4, and FIG. 6(e) is a cross-sectional view taken along the line K-K of FIG. 6(d).

[Fig. 7]

FIG. 7 is a side view illustrating the forward full open state of the door (emergency escape state) in which an extension footboard portion 8 on a vehicle interior side is rotated forward after the door main body 7 of the door 5 is tilted forward. [Fig. 8]

FIG. 8(a) is a view along the arrow-headed line A-A of FIG. 7, and

FIG. 8(b) is a cross-sectional view taken along the line B-B of FIG. 8(a).

[Fig. 9]

FIGS. 9 to 12 are perspective views illustrating rotated states of the door main body 7 stepwise when viewed from a forward lateral direction.

[Fig. 10]

FIG. 10 is a perspective view illustrating a state where the extension footboard portion 8 is rotated upward by approximately 90 ° .

[Fig. 1 1]

FIG. 1 1 is a perspective view illustrating a state where the extension footboard portion 8 is further rotated forward by approximately 60 ° from the state illustrated in FIG. 10.

[Fig. 12]

FIG. 12 is a perspective view illustrating a state where the extension footboard portion 8 is further rotated forward by approximately 30 ° from the state illustrated in FIG. 1 1.

[Fig. 13]

FIG. 13 is a plan view illustrating a state where tip end faces of vehicles are closely faced each other in a state where the doors 5 are opened, and a gangway footplate 52 is disposed to bridge between tip end opening portions 3 and 3 of both of the vehicles.

[Fig. 14]

FIG. 14 is a side view of FIG. 13. [Fig. 15]

FIG. 15 is a cross-sectional view taken along the line D-D of FIG. 4.

[Fig. 16]

FIG. 16 is a cross-sectional view taken along the line E-E of FIG.

4.

[Fig. 17]

FIG. 17 includes views illustrating a state where the door 5 is closed, in which FIG. 17(a) is a cross-sectional view of the door 5, FIG. 17(b) is an elevational view of the door 5 when viewed from the inside of the vehicle, and FIG. 17(c) is an elevational view illustrating a positional relation between a door- side stopper 61 and a window cover- side stopper 71 in a lashing mechanism 60 of a first footboard portion 12b, and FIGS. 17 to 20 are explanatory views for sequentially explaining opened states of the door main body 7 and the extension footboard portion 8, and operational modes of the lashing mechanism 60 from a closed state to an opened state.

[Fig. 18]

FIG. 18 includes views illustrating a state where the door main body 7 on the first tier is opened, in which FIG. 18(a) is a cross- sectional view of the door main body 7 and the extension footboard portion 8, FIG. 18(b) is a plan view of the door main body 7 when viewed from above, and FIG. 18(c) is a plan view illustrating the positional relation between the door-side stopper 61 and the window cover- side stopper 71 in the lashing mechanism of the first footboard portion 12b.

[Fig. 19]

FIG. 19 includes views illustrating a state where the extension footboard portion 8 on the second tier is opened, in which FIG. (a) is a cross- sectional view of the door main body 7 and the extension footboard portion 8, FIG. 19(b) is a plan view of the door main body 7 and the extension footboard portion 8 when viewed from above, and FIG. 19(c) is a plan view illustrating the positional relation and an engagement state between the door- side stopper 61 and the window cover-side stopper 71 in the lashing mechanism of the first footboard portion 12b.

[Fig. 20]

FIG. 20 includes views illustrating a state where the extension footboard portion 8 on the second tier is opened, and the first footboard portion 12b is about to move backward, in which FIG. 20(a) is a cross- sectional view of the door main body 7 and the extension footboard portion 8, FIG. 20(b) is a plan view of the door main body 7 and the extension footboard portion 8 when viewed from above, and FIG. 20(c) is a plan view illustrating the positional relation and the engagement state between the door-side stopper 61 and the window cover-side stopper 71 in the lashing mechanism of the first footboard portion 12b.

[Fig. 21]

FIG. 21 includes views in which FIG. 21 (a) is a plan view of the entire lashing mechanism 60 illustrating a state where the door-side stopper 61 and the window cover-side stopper 71 are engaged with each other, and FIG. 21 (b) is a right side view thereof.

[Fig. 22]

FIG. 22 includes views in which FIG. 22(a) is a plan view illustrating the door-side stopper 61 , FIG. 22(b) is a cross-sectional view taken along the line A-A of FIG. 22(a), and FIG. 22(c) is a cross-sectional view taken along the line B-B of FIG. 22 (a).

[Fig. 23]

FIG. 23 includes views in which FIG. 23(a) is a plan view illustrating the window cover-side stopper 71 , and FIG. 23(b) is a right side view thereof, and FIG. 23(c) is a cross-sectional view taken along the line A-A of FIG. 23(a).

[Description of Embodiments]

[0017]

A description will be given hereinbelow of an embodiment of a door structure for a railway vehicle according to the present invention on the basis of the drawings.

[0018]

FIG. 1 is an elevational view illustrating a tip end panel of a railway vehicle having the door structure according to the embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1 , while FIG. 3 is a cross-sectional view taken along the line B-B of FIG. 1. FIG. 4 is an elevational view of a circumferential area of a door in a central portion of a tip end face of the railway vehicle, while FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 4. FIGS. 6 (a) to 6(c) illustrate a locking mechanism of a door main body 7, while FIGS. 6(d) and 6(e) illustrate a locking mechanism of a door 5. FIG. 7 is a side view illustrating the forward full open state of the door (emergency escape state) in which an extension footboard portion 8 on a vehicle interior side is rotated forward after the door main body 7 of the door 5 is tilted forward. FIG. 8(a) is a view along the arrow-headed line A-A of FIG. 7, while FIG. 8(b) is a cross-sectional view taken along the line B-B of FIG. 8(a). FIGS. 9 to 12 are perspective views illustrating rotated states of the door main body 7 stepwise when viewed from a forward lateral direction. FIG. 13 is a plan view illustrating a state where tip end faces of vehicles are closely faced each other in a state where the doors 5 are opened, and a gangway footplate 52 is disposed to bridge between tip end opening portions 3 and 3 of both of the vehicles.

[0019]

As illustrated in FIG. 1, in an end panel (front surface) 2 of a tip of a body of a front vehicle (inclusive of the last vehicle) 1 , a vertically long opening portion 3 is provided in a central portion thereof, and an opening frame 4 is fitted in the opening portion 3. To the opening frame 4, a door (hinged door) 5 is attached using a hinge 6 (see FIG. 5) so as to be openable in a forward and a lateral direction (when viewed from the inside of the vehicle 1 , from a forward direction to a lateral direction (a left-side direction or right-side direction)). The door 5 has a window 5c in its upper portion and includes a door main body (sloped door) 7 and a door frame 5a in its circumferential edge portion so as to be detachable from each other, and a lower end of the door main body 7 is connected to a lower end edge 5b of the door frame 5a via the hinge or a spindle 9 so as to be openable such that the door main body 7 is tilted forward and downward. In a state where the door main body 7 is integrated with the door frame 5a and an extension footboard portion 8 described later, the door main body 7 is opened and closed about an axis of the hinge 6 as the door (hinged door) 5. Specifically, as illustrated in FIG. 3, in the state where the door main body 7 is integrated with the door frame 5a and the extension footboard portion 8, the door main body 7 is rotated in the forward and a lateral direction with respect to the opening frame 4 via the hinge 6 to open the opening portion 3. In addition, guide rollers 5d are attached to both sides of a lower end face of the door frame 5a and, in a state where the door 5 is returned to the original position together with the door frame 5a via the hinge 6 to close the opening portion 3, the guide rollers 5d come in contact with an under face in the opening frame 4 to support the entire door 5. As illustrated in FIG. 7, a footboard cover 53 is attached to extend from a walkway of the front vehicle 1 to the lower end portion of the door main body 7 so as to cover the spindle 9.

[0020]

On a back face side (vehicle interior side) of the door main body 7 as the door on the first tier, the extension footboard portion 8, which constitutes, in an emergency escape state, a footboard face (escape step) together with a face of the door main body 7 on the vehicle interior side, is provided to be connected to the door main body 7 so as to be foldable about the spindle 10. Specifically, the extension footboard portion 8 is slightly narrower in width and slightly shorter in length than the door main body 7, and one end (base end) of the extension footboard portion 8 is connected to the upper end of the door main body 7 via the hinge or the spindle 10 so as to be rotatable about the axis by approximately 180 ° . The door main body 7 is provided with the window 5c at a position slightly above the middle position in a longitudinal (vertical) direction. The window 5c has a transparent glass pane 11a.

[0021]

As illustrated in FIG. 7, the surface of the door main body 7 has a longitudinal section that is curved forward (downward) and convexly in an arc shape over its length. On the face of the door main body 7 on the vehicle interior side, the portion below the window 5c is protruded backward (upward) from the lower end thereof toward a slightly upward portion, and both-side frame walls l ib are formed on both-side edge portions 7a from the end of the protruded portion toward the upper end of the door main body 7 in such a manner as to cross the upper end. In addition, a footboard face 12 is formed to bridge between the both-side frame walls 1 Ib so as to cover a space portion. The footboard face 12 is comprised of a portion 12b that covers the window 5c (hereinbelow referred to as a first footboard portion), and a lower portion 12a. In this embodiment, the first footboard portion 12b is attached between guide frames l ie that are provided to protrude on the both-side frame walls l ib so as to be slidable on the lower portion 12a and the window 5c. When the door main body 7 is raised, the first footboard portion 12b descends by its own weight to lie on top of the lower portion 12a in a state where the first footboard portion 12b is integrally fitted in the the door frame 5a. In other words, the window 5c is opened. In a state where the door main body 7 is rotated about the spindle 9 forward and downward by about 100 ° to 110 ° with respect to the door frame 5a to be tilted forward, the first footboard portion 12b moves to a position over the window 5c by its own weight along and between the guide frames l ie to cover the window 5c. It is to be noted that an anti-slip sheet is affixed on the footboard face 12 (surface).

[0022]

By the way, the first footboard portion 12b is slidable on the lower portion 12a and the window 5c along the guide frames l ie. In the state where the door main body 7 is rotated about the spindle 9 forward and downward to be tilted forward, the first footboard portion 12b moves to the position over the window 5c by its own weight to cover the window 5c, as described above. On the other hand, in the state where the door main body 7 is raised, and integrally fitted in the door frame 5a, the first footboard portion 12b lies on top of the lower portion 12a by its own weight, and the window 5c is opened. Accordingly, In the present embodiment, there is provided a lashing mechanism 60 for fixing a portion that covers the window when the first footboard portion 12b has moved to the position over the window 5c.

[0023]

A description will be given hereinbelow of an embodiment of the lashing mechanism 60 on the basis of FIGS. 17 to 21. FIGS. 17 to 20 are explanatory views for sequentially explaining opened states of the door main body 7 and the extension footboard portion 8, and operational modes of the lashing mechanism 60 from a closed state to the opened state, in which FIGS, (a) are right-side cross-sectional views of the door main body 7 and the extension footboard portion 8, FIGS, (b) are plan views thereof, and FIGS, (c) are explanatory views of the operational modes of the lashing mechanism. FIG. 21 includes a plan view and a side view each illustrating the entire lashing mechanism, FIG. 22 includes a plan view, a cross-sectional view taken along the line A-A, and a cross-sectional view taken along the line B-B each illustrating a door- side stopper, and FIG. 23 includes a plan view and a cross- sectional view taken along the line A-A each illustrating a window cover-side stopper.

[0024]

As illustrated in FIG. 21 , the lashing mechanism 60 is constituted of a combination of the door- side stopper 61 and the window cover- side stopper 71. As illustrated in FIG. 22, the door- side stopper 61 is provided in the door main body 7. On the other hand, as illustrated in FIG. 23, the window cover-side stopper 71 is provided in the first footboard portion 12b.

[0025]

In the door-side stopper 61, a generally L-shaped stopper member 63 is openably and closably connected onto an attachment frame 62 so as to be rotatable using a spindle 64. The stopper member 63 is biased in an opening direction using a shaft 65 via a spring 66. A latch 67 is disposed on an upper end of the shaft 65 to be upwardly protruded from an upper end of the attachment frame 62, and a lower end face of the latch 67 is coupled to an upper end face of the shaft 65. The window cover-side stopper 71 has a long generally I-shaped stopper member 73 on an attachment frame 72 smaller than the attachment frame 62, and a nail portion 73a that is engageable with and detachable from a nail portion 63a of the stopper member 63 at its tip, and a lower end portion of the stopper member 73 is connected using a spindle 74 so as to be laterally rotatable. An upper portion of the stopper member 73 is protruded upwardly of the attachment frame 72, and is biased in an engaging direction with respect to the stopper member 63 using a spring 75. The spring 75 is guided by two guide members 76.

[0026]

As illustrated in FIG. 21 , the door-side stopper 61 is attached to the door main body 7 using four bolts (and nuts) 68 such that its vertical position is adjustable. The window cover-side stopper 71 is attached to the first footboard portion 12b using four bolts 77 such that its vertical position is adjustable. With this configuration, by adjusting the respective vertical positions, the window cover-side stopper 71 is reliably engaged with the door- side stopper 61. As illustrated in FIGS. 21 to 23, in the vicinity of the spindle 64 of the stopper member 63 of the door-side stopper 61 , a protrusion portion 69 is provided to protrude in a direction opposite to that of the nail portion 63a. In addition, locking members 65b and 65c are integrally formed at positions above and below the middle portion of the shaft 65. A configuration is adopted in which, by moving the shaft 65 vertically, the locking member 65a or 65c is engaged with the protrusion portion 69, and the stopper member 63 is thereby rotated clockwise or anticlockwise about the spindle 64.

[0027]

Herein, a description will be given of the opened states of the door main body 7 and the extension footboard portion 8, and the operational modes of the lashing mechanism 60 sequentially from the close state of the door 5 to the forward full open state of the door.

[0028]

In FIGS. 17 to 20,

1) In a state where the door 5 is closed, the window 5c of the door main body 7 and an open portion for window 13 of the extension footboard portion 8 are opened, the first footboard portion 12b of the door main body 7 lies on top of the lower portion 12a, and the door- side stopper 61 and the window cover-side stopper 71 are spaced apart from each other (FIG. 17).

[0029]

2) In a state where the door main body 7 as the first tier of the door 5 is tilted forward and downward, the extension footboard portion 8 as the second tier is in an upright state at the tip end of the door main body 7. At this time, the first footboard portion 12b moves to the position over the window 5c by its own weight along and between the guide frames l ie to cover the window 5c. In this state, the window cover-side stopper 71 moves toward the tip end side relative to the door- side stopper 61 , and they are brought into an engageable state (FIG. 18). [0030]

3) With respect to the door main body 7, the extension footboard portion 8 as the second tier is opened in an extending direction of the door main body 7, the latch 67 of the door-side stopper 62 is thereby pressed against the spring 66, and the stopper member 63 is rotated clockwise to be brought into engagement with the window cover- side stopper 71. In addition, as will be described later, the opening portion for window 13 on the side with the extension footboard portion 8 is also covered with the second footboard portion 14b via links 15 in synchronization with the opening operation (FIG. 19).

[0031]

4) In the state illustrated in FIG. 19, even if the first footboard portion 12b is to move toward the rear portion side, since the stopper member 73 of the window cover-side stopper 71 is biased by the spring 75 in the engaging direction, the engagement with the stopper member 63 of the door-side stopper 61 is maintained, and the first footboard portion 12b does not move (FIG. 20).

[0032]

The extension footboard portion 8 is provided with the opening portion for window 13 at a position matching that of the window 5c of the door main body 7 in a state where the extension footboard portion 8 is not rotated in the close state of the door (normal state) (in other words, a state where the extension footboard portion 8 is folded to be stacked on the vehicle interior side of the door main body 7). On the surface of the extension footboard portion 8, U-shaped frames 13b and 13c are provided to protrude in upper and lower portions of the opening portion for window 13, and the U-shaped frames 13b and 13c are utilized when the extension footboard portion 8 is returned from the rotated state to the normal state. In addition, on the face of the extension footboard portion 8 on the vehicle interior side (face directed upward in the rotated state), a footboard face 14 is formed, and the footboard face 14 is comprised of a lower portion 14a of the opening portion for window 13, and the second footboard portion 14b. The lower portion 14a is fixed to the position of the lower portion of the face of the extension footboard portion 8 on the vehicle interior side, but the second footboard portion 14b is provided so as to be slidable between positions on the lower portion 14a and the opening portion for window 13 along and between a pair of laterally arranged guide frames 13a and 13a. Further, to both-side upper end portions of the the second footboard portion 14b, one end portions of the links 15 are rotatably connected using pivoting pins 15d via brackets 15c, and the other end portions of the links 15 are rotatably connected to positions close to the upper end on both sides of the door main body 7 using pivoting pins 15b via brackets 15a.

[0033]

With this configuration, when the extension footboard portion 8 is rotated upward and forward by approximately 180 ° from the state where the extension footboard portion 8 is folded to be stacked on the vehicle interior side of the door main body 7, the second footboard portion 14b moves to the position on the opening portion for window 13 from the position on the lower portion 14a in such a manner as to be pulled by the the links 15 and 15 on both sides, and covers the opening portion for window 13. Reversely, when the extension footboard portion 8 is laid on top of the face of the door main body 7 on the vehicle interior side while being folded to be retuned to its original state from the rotated state, the second footboard portion 14b moves to the position on the lower portion 14a in such a manner as to be pushed up by the links 15 and 15 on both sides from the position on the opening portion for window 13, and opens the opening portion for window 13. On the footboard face 14 (surface), the anti-slip sheet is affixed.

[0034]

As illustrated in FIGS. 7 and 8, brackets 18 are uprightly fixed in the vicinities of respective upper end portions of the both-side edge portions 7a of the door main body 7, and one end portions of supporting links 17 are fixed to the brackets 18 using pivoting pins 17a disposed in a lateral direction orthogonal to the side faces of the supporting links 17 so as to be rotatable about the axes of the pivoting pins 17a. The other ends of the supporting links 17 are connected to the upper end portions in the door frame 5a via traction chains 19. At this time, upper ends of the traction chains 19 are fixed to the upper end portions in the door frame 5a or ceiling portions in the front vehicle 1. In addition, at generally middle positions in a longitudinal direction (vertical direction) on the both-side edge portions 7a of the door main body 7, one end portions of auxiliary links 21 are fixed using pivoting pins 21a disposed in the lateral direction orthogonal to side faces of the auxiliary links 21 via brackets 22 so as to be rotatable about the axes of the pivoting pins 21a. Further, the other ends of the auxiliary links 21 are fixed at generally middle positions in the longitudinal direction of the supporting links 17 using pivoting pins 17b disposed in the lateral direction orthogonal thereto so as to be rotatable about the axes thereof, and elongated holes 21c are formed to be slidable relative to the pivoting pins 17b over a predetermined length in the longitudinal direction from the other ends of the auxiliary links 21. It is to be noted that elongated grooves or groove-like sliders may be used instead of the elongated holes 21c.

[0035]

A configuration is adopted in which, in the upright state of the door main body 7 (state where the door main body 7 is integrally fitted in the door frame 5a), the corresponding support links 17 and auxiliary links 21 are disposed in parallel with each other to be laid on top of each other. In addition, one ends of L-shaped brackets 20 are fixed to be laterally protruded at portions close to the tip end portions on both sides of the extension footboard portion 8. To upright portions of the L- shaped brackets 20, one end portions of second supporting links 23 are fixed using pivoting pins 20a disposed in the lateral direction orthogonal to side faces of the upright portions so as to be rotatable about the axes thereof. Further, the other ends of the second supporting links 23 are connected to the other end portions of the supporting links 17 via second traction chains 24. Furthermore, handrail chains 25 are disposed to bridge between positions in the vicinities of the lower end portions of the traction chains 19 and positions slightly below the middle positions in the vertical direction in the door frame 5a.

[0036]

As illustrated in FIGS. 4 and 5, to a position close to the upper end portion in the opening frame 4 of the railway vehicle 1 , one end of a closing operation traction chain 26 for the door main body 7 is fixed. As illustrated in FIG. 7, at the middle position in the longitudinal direction of the upper end of one side wall of the door main body 7 and one side face of the extension footboard portion 8, a roller 28 is disposed to be laterally protruded. The other end side of the closing operation traction chain 26 is fixed to an eyebolt 27, and is connected to a closing operation traction chain winding apparatus 32 attached to the right side in the ceiling portion in the railway vehicle so as to be wound by way of the roller 28, a chain winding shock absorption apparatus 29, and two pulleys 30 and 31 that are attached to the left side of the ceiling portion thereof. The shock absorption apparatus 29 has a control apparatus therein that keeps a paying out speed of the traction chain 26 under a predetermined value by spring force and friction, and as the shock absorption apparatus 29, for example, a speed governor of a slowdown elevator (SLOWDOWN 125 (registered trademark)) of kabushiki kaisha shoubou kagaku kenkyujo can be used. As illustrated in FIGS. 4 and 5, in the traction chain winding apparatus 32, an upper end engagement portion 33a of a rotation operation member 33 is engaged with an engagement portion 32a of the traction chain winding apparatus 32, and the rotation operation member 33 is manually rotated to wind the opening/ closing operation traction chain 26. As a result, the extension footboard portion 8 in the rotated state is firstly folded about the spindle 10, and then laid on top of the face of the door main body 7 on the vehicle interior side in the rear. In this state, by continuing the winding operation of the closing operation traction chain 26, the door main body 7 is rotated backward and upward to be fitted in the door frame 5a, and they are integrated together.

[0037]

In this state, as illustrated in FIG. 4, locking nails 42 of locking mechanisms 41 provided at middle positions in the vertical direction of the door frame 5a on both sides of the door main body 7 are engaged with locking grooves 44a of locks 44 (see FIGS. 10 and 1 1) provided in upper and lower portions on both sides of the door main body 7 by biasing force of springs (not shown), and the door main body 7 is thereby integrated with the door frame 5a. On the other hand, when the integration of the door main body 7 and the door frame 5a is disintegrated in order to set the emergency escape state, in FIGS. 6 (a) to 6(c), lock release levers 43 provided at the middle positions on both sides of the door frame 5a are rotated toward an outward (the door frame 5a) side as illustrated in FIG. 6(b), whereby the locking nails 42 engaged with the locking grooves 44a (see FIG. 10) of the door main body 7 are pulled in toward the side with the door frame 5a against the springs as illustrated in FIG. 6(a), and the locked state is released as illustrated in FIG. 6(c).

[0038]

In addition, locking mechanisms 45 of the door 5 are provided on upper and lower portions on both sides of the door frame 5a, as indicated by a reference numeral 48 in FIGS. 6(d) and 6(e). As illustrated in FIG. 6(e), by rotating locking operation handles 46 from downward locking positions to horizontal positions on the side with the door main body 7, locking nails 47 fitted in locking grooves (not shown) in the opening frame 4 move out of the door frame 5a as illustrated in FIG. 6(d), and the locked state is thereby released. Herein, when one side portion (side opposite to the hinge 6) of the door 5 is pushed forward, the door 5 is rotated via the hinge 6 about its axis together with the door frame 5a relative to the opening frame 4, and the opening portion 3 is thereby opened. It is to be noted that the locking mechanisms 45 are disposed in storage portions of the door frame 5a, and the individual storage portions are normally closed with open/ close lids 48.

[0039]

Next, FIGS. 13 and 14 illustrate another mode in the emergency escape state in which passengers are allowed to move to another vehicle without getting off a vehicle to be on a railway track. Specifically, the opening portions 3 of the tip end faces 2 of the front vehicles 1 and 1 ' are brought close together to be faced each other in a state where the doors 5 are fully opened in a forward and a lateral direction, the gangway footplate 52 is disposed to bridge between the footboard covers 53 of the tip end opening portions 3 of the front vehicles 1 and 1 ', and handrail chains 54 are connected between the middle positions of the opening frames 4 and 4'. As a result, passengers on one vehicle 1 are allowed to move to the other vehicle 1 ' across the gangway footplate 52.

[0040]

In view of the foregoing, according to the present invention, it is possible to achieve the following effects.

[0041]

The door 5 structure for the railway vehicle provided in the opening portion 3 in the end panel 2 of the railway vehicle is characterized by including the door frame 5a having the hinge 6 on one side portion, the door main body 7 that is pivo tally openable and clo sable in a lateral direction of the railway vehicle while the hinge 6 serves as the axis, pivotally openable and closable in a forward direction of the railway vehicle while the lower end portion 5b of the door frame 5a serves as the axis, and provided with the window 5c and the first footboard portion 12b covering the window 5c in the forward full open state of the door, and the extension footboard portion 8 that is folded to be storable on the vehicle interior side of the door main body 7 in the close state of a door, and provided with the opening portion for window 13 positioned on the vehicle interior side of the window 5c in the close state of a door, and the second footboard portion 14b covering the opening portion for window 13 in the forward full open state of a door.

[0042]

According to the door structure for the railway vehicle of the present invention having the above-described configuration, since the door 5 is constituted by integrating the door main body 7, the door frame 5a, and the extension footboard portion 8 together, the structure thereof is simplified as compared with that the prior art technique having the window in the door and, when the door is opened, the slope portion for escape is also opened together as the door so that the slope portion for escape does not get in the way. In addition, since the door main body 7 is openable in the forward and a lateral direction, the doors of two vehicles do not interfere with each other in the state where the tip ends of the two vehicles are closely faced each other and, accordingly, it is possible to dispose the relatively short gangway footplate to bridge between the vehicles to transfer passengers between the vehicles, as illustrated in FIGS. 13 and 14. Further, since the window 5c of the door main body 7 and the opening portion for window 13 of the extension footboard portion 8 are opened in the close state of the door, and the window 5c and the opening portion for window 13 are covered with the first footboard portion 12b and the second footboard portion 14b, respectively, to constitute the footboard face (slope) for escape in the forward full open state of the door, it is possible to smoothly escape irrespective of the presence or absence of the window.

[0043]

Specifically, the door structure having the above-described configuration has the following excellent effects.

^• Since the structure is simplified as compared with the conventional door structure having the window in the door and, when the door is opened, the slope portion for escape is opened together with the door, the slope portion for escape is less likely to get in the way.

[0044]

^• Since the door is opened in the forward and a lateral direction of the tip end face of the vehicle, in the state where the tip ends of two vehicles are closely faced each other, the doors of both of the vehicles do not interfere with each other, and it is possible to dispose the relatively short gangway footplate to bridge between the vehicles to transfer passengers from one vehicle to the other.

[0045]

^• In the normal state, the window of the door main body and the opening portion for window of the extension footboard portion are completely opened so that it is possible to see the scenery outside the vehicle and the like. On the other hand, in the emergency escape state, since the window is covered with the first footboard portion and the opening portion for window is covered with the second footboard portion to constitute the walkway for escape, it is possible to smoothly escape irrespective of the presence or absence of the window and the opening portion for window.

[0046]

^• It is possible to use the opening portion that is the doorway for normal use as the doorway for emergency use, and smoothly form the slope for escape manually without using a power source such as an engine or a motor in case of an emergency.

[0047] Preferably, the present invention further has the following configuration s .

[0048]

(1) The first footboard portion 12b slides on the door main body 7 by its own weight to cover the window 5c from the forward full open state of the door to the close state of the door.

[0049]

With this configuration, it is possible to move the first footboard portion 12b provided on the face of the door main body 7 on the vehicle interior side between the window 5c and the lower portion thereof in synchronization with the rotation operation of the door main body 7 without specially using a movement mechanism such as the link mechanism so that the structure is simplified.

[0050]

(2) There are further provided the links 15 having one end portions rotatably connected to the second footboard portion 14b and the other end portions rotatably connected to the door main body 7, and the second footboard portion 14b is slidable on the extension footboard portion 8 by the links 15 from the forward full open state to the close state of the door.

[0051]

With this configuration, since the second footboard portion 14b provided on the face of the extension footboard portion 8 on the vehicle interior side is moved between the opening portion for window 13 and the lower portion thereof by the links 15 in synchronization with the rotation operation of the extension footboard portion 8, it is possible to reliably move the second footboard portion 14b to the predetermined position.

[0052]

(3) There are further provided the pair of supporting links 17 having on end portions rotatably connected to the door main body 7 and the other end portions connected to the door frame 5a by the traction means 19, the pair of auxiliary links 21 having one end portions rotatably connected to the end portions in the width direction of the door main body 7 and the other end portions provided with the guide grooves 21c for guiding the supporting links 17 by causing the supporting links 17 to slide, and the pair of second supporting links 23 having one end portions rotatably connected to the extension footboard portion 8 and the other end portions connected to the pair of supporting links 17 by the second traction means 24.

[0053]

With this configuration, in the forward full open state of the door, since it is possible to support the door main body 7 and the extension footboard portion 8 using the supporting links 17 and the traction means 19 in the state where the door main body 7 is tilted forward, and the extension footboard portion 8 is rotated to the extension position of the door main body 7, it is possible to secure the support for the door main body 7 and the extension footboard portion 8 in their rotated states. Moreover, when passengers escape, the supporting links 17 and the traction means 19 serve as handrails to prevent the passengers from falling sideways so that it is possible to safely perform the escape of the passengers, and lower the strengths of the door main body 7 and the extension footboard portion 8 to reduce the weight. Furthermore, when the door main body 7 is tilted forwardly of the vehicle, and the extension footboard portion 8 is rotated to the extension position of the door main body 7, the supporting links 17 and the traction means 19 gently guide the rotation operations of the door main body 7 and the extension footboard portion 8 to the maximum opening position and the maximum rotation position to prevent abrupt rotations of the door main body 7 and the extension footboard portion 8 so that it is possible to reliably guide the door main body 7 and the extension footboard portion 8 to the maximum opening position and the maximum rotation position.

[0054]

There are further provided the opening /closing operation traction means 26 having one end portion fixed to the door main body 7 and for opening and closing the door main body 7 forward, the roller 28 provided in the generally central position in the longitudinal direction of the extension footboard portion 8 to guide the opening/ closing operation traction means 26, and the winding apparatus 32 provided in the upper portion inside the railway vehicle and capable of winding the opening/ closing operation traction means 26.

[0055]

With this configuration, in the state of forward full opening of the door in which the door main body 7 is tilted forwardly of the vehicle, and the extension footboard portion 8 is rotated to the extension position of the door main body, only by winding the closing operation traction chain 26 using the winding apparatus 32, the extension footboard portion 8 in the rotated state is folded and continuously laid on top of the face of the door main body 7 on the vehicle interior side, and the door main body 7 is rotated backward and upward to be raised, and can be fitted in the door frame 5a to be integrated together.

[0056]

(4) The footboard face of the door main body 7 and the footboard face of the extension footboard portion 8 are subjected to an anti-slip treatment.

[0057]

With this configuration, the footboard faces of the door main body 7 and the extension footboard portion 8 on which passengers move become less slippery so that the passengers are allowed to safely escape.

[0058]

(5) The door main body 7 is provided with the door-side stopper 61 , the first footboard portion 12b is provided with the window cover- side stopper 71 , and the door- side stopper 61 is engaged with the window cover-side stopper 71 to fix the first footboard portion 12b to the position over the window 5c in the forward full open state of the door.

[0059]

With this configuration, in the state where the first footboard portion 12b has moved to the position on the opening portion for window 13, the window cover- side stopper 71 is engaged with the door- side stopper 61, and the first footboard portion 12b is thereby held at the position over the window 13.

[0060]

(6) In the above-described configuration (5), the window cover- side stopper 71 has the second stopper member 73, and the second spring 75 that supports the second stopper member 73, the door-side stopper 61 has the first stopper member 63, the latch 67 that rotates the first stopper member 63 in a direction in which the first stopper member 63 is engaged with the second stopper member, and the first spring 66 that biases the first stopper member 63 such that the first stopper member 63 is rotated in a direction in which the first stopper member 63 is spaced apart from the second stopper member 73, the latch 67 operates to rotate the first stopper member 63 such that the first stopper member 63 is engaged with the second stopper member 73 when the extension footboard portion 8 is positioned forwardly of the door main body 7 and, when the extension footboard portion 8 is not positioned forwardly of the door main body 7, the latch 67 does not operate but the first spring 66 rotates the first stopper member 63 in a direction in which the first stopper member 63 is spaced apart from the second stopper member 73 such that the engagement between the first and second stopper members 63 and 73 is released.

[0061]

With this configuration, when the extension footboard portion 8 is positioned forwardly of the door main body 7, the first stopper member 63 is automatically engaged with the second stopper member 73 so that it is possible to easily hold the first footboard portion 12b at the position over the window 5c. In addition, in a case where the state is returned from the state of forward full opening of a door to the state of closing of a door, when the extension footboard portion 8 moves out of the position forwardly of the door main body 7, the engagement between the first and second stopper members 63 and 73 is automatically released so that it is possible to easily perform the returning operation from the state of forward full opening of a door back to the state of closing of a door.

[0062]

In the foregoing, the description has been given of the embodiment of the door structure for the railway vehicle according to the present invention, the door structure for the railway vehicle according to the present invention may be embodied in the following manners.

(1) In the embodiment described above, in the state where the opening frame 4 is fitted in the opening portion 3 of the end panel 2, the door 5 is openably attached to the opening frame 4 using the hinge 6. However, it is possible to directly attach the door 5 in the opening portion 3 together with the door frame 5a.

(2) In the embodiment described above, although the first footboard portion 12b of the door main body 7 automatically moves by its own weight between the opening portion for window and the lower portion thereof, it is also possible to move the first footboard portion 12b by using the link mechanisms 15 or the like similarly to the second footboard portion 14b of the extension footboard portion 8.

(3) It is possible to use an elongated groove or a slider groove capable of guiding the pivoting pin 17b instead of the elongated hole 21 c of the auxiliary link 21.

(4) The position of the window 5c provided in the door 5 is not particularly limited as long as the position is above the middle position in the vertical direction of the door 5.

[Reference Signs List]

[0063]

1 front vehicle (railway vehicle)

2 end panel of tip of vehicle

3 opening portion

4 opening frame

5 door (hinged door)

5a door frame

5b lower end edge of door frame 5a

5c window

5d guide roller

6 hinge

7 door main body (sloped door)

7a both-side edge portion of door main body 7

8 extension footboard portion

9 spindle

10 spindle

Ha glass pane 1 Ib both-side frame wall

12 footboard face

12a lower portion

12b first footboard portion 13 opening portion for window

13b, 13c U-shaped frame

14 footboard face

14a lower portion

14b second footboard portion 15 link

15a bracket

15b pivoting pin

15c bracket

15d pivoting pin

17 supporting link

17a pivoting pin

17b pivoting pin

18 bracket

19 traction chain

20 L-shaped bracket

20a pivoting pin

21 auxiliary link

21a pivoting pin

21c elongated hole

22 bracket 23 second supporting link

24 second traction chain

25 handrail chain

26 opening/ closing operation traction chain 27 eyebolt

28 roller

29 shock absorption apparatus

30, 31 pulley

32 traction chain winding apparatus 33 rotation operation member

41 locking mechanism

42 locking nail

44 lock

44a locking groove

45 locking mechanism

46 locking operation handle

47 locking nail

48 open/ close lid

51 coupler

52 gangway footplate

53 footboard cover

54 handrail chain

60 lashing mechanism

61 door-side stopper

62 attachment frame 63 generally L- shaped stopper member 63a nail portion of stopper member 63

64 spindle

65 shaft

65b, 65c locking member

66 spring

67 latch

68 bolt (nut)

69 protrusion portion

71 window cover- side stopper

72 small attachment frame

73 generally I-shaped stopper member 73a nail portion of stopper member 73

74 spindle

75 spring

76 guide member

77 bolt (nut)

Claims

1. A door structure for a railway vehicle provided in an opening portion in an end panel of the railway vehicle, characterized by comprising:

a door frame having a hinge on one side portion;

a door main body that is pivo tally openable and clo sable in a lateral direction of the railway vehicle while the hinge serves as an axis, pivotally openable and closable in a forward direction of the railway vehicle while a lower end portion of the door frame serves as an axis, and provided with a window and a first footboard portion covering the window in a forward full open state of the door; and

an extension footboard portion that is folded to be storable on a vehicle interior side of the door main body in a close state of the door, and provided with an opening portion for window positioned on the vehicle interior side of the window in the close state of the door, and a second footboard portion covering the opening portion for window in the forward full open state of the door.

2. The door structure of claim 1 , wherein the first footboard portion slides on the door main body by the weight of the first footboard portion to cover the window from the close state of the door to the forward full open state of the door.

3. The door structure of claim 1 , further comprising:

a link having one end potion rotatably connected to the second footboard portion and the other end portion rotatably connected to the door main body, wherein the second footboard portion is slidable on the extension footboard portion by the link from the close state of the door to the forward full open state of the door.

4. The door structure of claim 1 , further comprising:

a pair of supporting links each having one end portion rotatably connected to the door main body and the other end portion connected to the door frame by traction means;

a pair of auxiliary links each having one end portion rotatably connected to an end portion in a width direction of the door main body and the other end portion provided with a guide groove for guiding one of the pair of supporting links by causing the supporting link to slide; and

a pair of second supporting links each having one end portion rotatably connected to the extension footboard portion and the other end portion connected to one of the pair of supporting links by second traction means.

5. The door structure of claim 1 , further comprising:

opening/ closing operation traction means having one end portion fixed to the door main body, and for opening and closing the door main body in the forward direction;

a roller provided in a generally central position in a longitudinal direction of the extension footboard portion, and guiding the opening/ closing operation traction means; and

a winding apparatus provided in an upper portion inside the railway vehicle, and capable of winding the opening/ closing operation traction means.

6. The door structure of claim 1 , wherein a footboard face of the door main body and a footboard face of the extension footboard portion are subjected to an anti-slip treatment.

7. The door structure of claim 1, wherein

the door main body is provided with a door-side stopper, the first footboard portion is provided with a window cover- side stopper, and

the door-side stopper is engaged with the window cover-side stopper to lock the first footboard portion to a position over the window in the forward full open state of the door.