Railway vehicle

Abstract

To provide a railroad vehicle capable of achieving both reinforcement of a corner part of an opening part and facilitation of attachment of an entrance frame to a side outer plate.SOLUTION: In one aspect of the present invention, in the railcar 1, the cross section of the lateral frame 42 is formed in a hat shape, the longitudinal frame 43 includes the first flange portion 81101 joined to the 61a portion upper side of the lateral frame 42 and the second flange portion 82102 joined to the side outside plate 41 or the shear plate 44 at a position on the car exterior side of the first flange portion 81101, and the second flange portion 82102 is provided with the extension portion 91111 that extends along the inlet opening 51 or the window opening 52 and reinforces the corner portion of the inlet opening 51 or the window opening 52. The entrance frame 45 includes, in an upper portion thereof, an insertion portion 123 that can be inserted into the side outside plate 41 when the entrance frame 45 is attached to the entrance opening 51.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a railway vehicle having an underframe and a pair of side structures joined to both ends of the underframe in a sleeper direction. [Background technology]

[0002] Patent document 1 discloses a railway vehicle in which a reinforcing member (side structure reinforcing member) extending to the corner (end) of an opening in the side structure is placed at the corner, and the reinforcing member is joined to the extension (extension) of the vertical frame, thereby reinforcing the corner of the opening. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-73674 Summary of the Invention [Problem to be solved by the invention]

[0004] The railway vehicle disclosed in Patent Document 1 requires a separate reinforcing member to reinforce the corners of the opening, resulting in a large number of parts. Furthermore, the extensions of the vertical ribs are joined to the heads of the reinforcing members and are positioned offset from the side outer panels of the side structure (i.e., away from the side outer panels). This raises the risk of insufficient reinforcement of the corners of the opening. Furthermore, Patent Document 1 does not disclose how to easily attach the entrance frame, which is attached around the entrance opening that serves as a passenger boarding and alighting door, to the side outer panels.

[0005] Therefore, the present disclosure has been made to solve the above-mentioned problems, and aims to provide a railway vehicle that can both reinforce the corners of the opening and facilitate attachment to the side outer panel of the entrance frame. [Means for solving the problem]

[0006] In order to achieve the above object, the railway vehicle of the present disclosure has the following configuration. (1) A railway vehicle having an underframe and a pair of side structures joined to both ends of the underframe in the sleeper direction, the side structures comprising side outer plates forming the outer surface of the railway vehicle, cross beams provided on the inside of the side outer plates along the track direction, vertical beams provided on the inside of the side outer plates along the up-down direction, and an entrance opening provided in the side outer plates to serve as a passenger boarding / alighting door, the cross beams having a hat-shaped cross section, and an entrance-side first flange connected to the upper surface of the cross beam. and an inlet-side second flange portion that is joined to the side outer plate at a position on the vehicle exterior side of the inlet-side first flange portion, wherein the inlet-side second flange portion is provided with an inlet extension portion that extends along the inlet opening to reinforce the corner of the inlet opening, and an inlet frame is attached around the inlet opening, and the inlet frame has an insertion portion at its upper portion that can be inserted into the side outer plate when attached to the inlet opening.

[0007] In the present disclosure, the entrance extensions of the vertical beams can reinforce the corners of the entrance openings in the side skin panels, which serve as passenger entry / exit points. Furthermore, these entrance extensions are not directly joined to the cross beams, but are directly joined to the side skin panels. Therefore, the entrance extensions can be positioned close to the side skin panels, allowing the entrance extensions to efficiently reinforce the corners of the entrance openings. Furthermore, because the corners of the entrance openings can be reinforced by the entrance extensions of the vertical beams in this way, there is no need to provide separate reinforcing members to reinforce the corners of the entrance openings. Therefore, the corners of the entrance openings in the side skin panels of the side structure can be reinforced while minimizing the number of parts.

[0008] Furthermore, when attaching the entrance frame to the entrance opening of the side skin, the entrance frame can first be inserted into the side skin into the inside of the insertion portion at the top of the entrance frame. This allows the top of the entrance frame to fit into the side skin, and then the bottom of the entrance frame is attached to the side skin, allowing the entrance frame to be securely attached to the entrance opening. This makes it easy to attach the entrance frame to the side skin.

[0009] (2) In the railway vehicle of (1), it is preferable that the inlet side first flange portion is formed only along the vertical direction, and the inlet extension portion branches off from the inlet side first flange portion and extends in a direction perpendicular to the inlet side first flange portion.

[0010] In the present disclosure, the side outer plate can be more effectively reinforced in the up-down direction by the inlet-side first flange portion, while the corners of the inlet opening of the side outer plate can be reinforced by the inlet extension portion.

[0011] (3) In the railway vehicle of (1) or (2), it is preferable that the side structure is provided on the side outer plate and has a window opening that serves as a window portion, the vertical frame has a window-side first flange portion that joins to the upper surface of the horizontal frame, and a window-side second flange portion that joins to a shear plate that joins to the side outer plate at a position on the outside of the window-side first flange portion, and the window-side second flange portion is provided with a window extension portion that extends along the window opening and reinforces the corner of the window opening.

[0012] In the present disclosure, the window extensions of the vertical frames can reinforce the corners of the window openings in the side skin panels that serve as windows. These window extensions are not directly joined to the upper surfaces of the horizontal frames, but are directly joined to the shear plates. Therefore, the window extensions can be positioned close to the side skin panels, allowing the window extensions to efficiently reinforce the corners of the window openings. Because the window extensions of the vertical frames can reinforce the corners of the window openings in this way, there is no need to provide separate reinforcing members to reinforce the corners of the window openings. Therefore, the corners of the window openings in the side skin panels of the side structure can be reinforced while minimizing the number of parts.

[0013] (4) In the railway vehicle of (3), it is preferable that the window-side first flange portion is formed only along the vertical direction, and the window extension portion branches off from the window-side first flange portion and extends in a direction perpendicular to the window-side first flange portion.

[0014] In the present disclosure, the side outer panel can be more effectively reinforced in the up-down direction by the window-side first flange portion, while the corners of the window opening of the side outer panel can be reinforced by the window extension portion. [Effects of the Invention]

[0015] According to the railway vehicle of the present disclosure, it is possible to reinforce the corners of the opening while facilitating attachment of the entrance frame to the side outer panel. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a side view of a railway vehicle according to an embodiment of the present invention. [Figure 2] 2 is a diagram schematically showing a cross section (AA cross section) of the vehicle body structure of the railway vehicle of FIG. 1 as viewed from the track direction. FIG. [Figure 3] This is a view of the side structure from inside the car. [Figure 4] This is a cross-sectional view of the side skin, cross-section, and shear plate in Figure 3 (BB cross-section). [Figure 5] FIG. 4 is an enlarged view of part X in FIG. 3 (the vertical bone at the entrance and its surrounding area). [Figure 6] FIG. 6 is a diagram showing the state before the entrance frame is attached in FIG. 5. [Figure 7] This is a cross-sectional view of CC in Figure 6 (a cross-sectional view of the side outer plate, horizontal frame, and vertical frame at the entrance). [Figure 8] FIG. 4 is an enlarged view of the Y portion (the vertical bone of the window portion and its surrounding area) in FIG. 3. [Figure 9] This is a DD cross-sectional view of Figure 8 (a cross-sectional view of the side skin, shear plate, and window vertical frame). [Figure 10] FIG. 1 is a perspective view of the upper part of the entrance frame and its surrounding area. [Figure 11] FIG. 10 is a diagram showing the entrance frame attached to the entrance opening. [Figure 12] 12 is a perspective view (partial cross-sectional view) of the upper part of the entrance frame and its periphery in FIG. 11. FIG. [Figure 13] FIG. 10 shows the entrance frame after it has been attached to the entrance opening. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of a railway vehicle according to the present disclosure will be described.

[0018] [Railway vehicle configuration] As shown in FIG. 1, the railway vehicle 1 is a vehicle that runs on a track 201 and includes a vehicle body structure 11 and a bogie 12.

[0019] As shown in Figures 1 and 2, the vehicle body structure 11 is configured to form a hexahedron by an underframe 21, a pair of gable bodies 22, a pair of side bodies 23, and a roof body structure 24.

[0020] The underframe 21 forms the floor of the railway vehicle 1. A pair of gable bodies 22 are erected at both ends of the underframe 21 in the track direction, thereby forming coupling sections of the railway vehicle 1. A pair of side bodies 23 are erected and joined to both ends of the underframe 21 in the sleeper direction, thereby forming side surfaces 11a of the vehicle body structure 11. The roof body structure 24 is joined to the upper ends of the gable bodies 22 and the side bodies 23, thereby forming the roof surface 11b of the vehicle body structure 11.

[0021] As shown in FIG. 1, the vehicle body structure 11 is also provided with a passenger entrance / exit door 31 and a window 32 that lead to the interior passenger compartment.

[0022] The bogie 12 supports the vehicle body structure 11 via air springs 13 .

[0023] 1, the railway vehicle 1 of this embodiment is an intermediate vehicle with coupling portions formed at both ends in the track direction, but is not limited to this and may be a lead vehicle. When the railway vehicle 1 is a lead vehicle, a leading end bodyshell (not shown) that forms the front end of the railway vehicle 1 is erected at one of the both ends in the track direction of the underframe 21, and a gable bodyshell 22 that forms the coupling portion of the railway vehicle 1 is erected at the other end.

[0024] [About the side structure] Next, the side structure 23 will be described.

[0025] As shown in FIG. 3, the side structure 23 includes a side outer plate 41, a cross frame 42, a vertical frame 43, a shear plate 44, an inlet frame 45, and the like.

[0026] The side outer plates 41 form the side surfaces 11a, which are the outer surfaces of the vehicle body structure 11 of the railway vehicle 1. The side outer plates 41 are supported from the inside of the vehicle (i.e., the inside of the railway vehicle 1) by vertical beams 43 via cross beams 42. The side outer plates 41 are provided with entrance openings 51 that serve as passenger boarding / alighting doors 31 and window openings 52 that serve as windows 32. The side outer plates 41 are formed from a metal plate material (having a plate thickness of, for example, 2.0 mm) such as carbon steel, stainless steel, or aluminum alloy. The entrance openings 51 and the window openings 52 are each an example of an "opening" in the present disclosure.

[0027] A plurality of cross beams 42 are provided on the inside of the side outer plate 41, and are arranged along the track direction of the railway vehicle 1. The cross beams 42 are formed from a metal plate material (having a plate thickness of, for example, 2.0 mm) such as carbon steel, stainless steel, or aluminum alloy.

[0028] 4, the cross-rib 42 has a hat-shaped cross section when viewed in its longitudinal direction (i.e., the track direction of the railway vehicle 1). Specifically, the cross-rib 42 has a channel portion 61 having a U-shaped cross section when viewed in its longitudinal direction, and flange portions 62 that protrude on both sides in a direction perpendicular to the longitudinal direction (i.e., the up-and-down direction of the railway vehicle 1).

[0029] The channel portion 61 is composed of an upper surface portion 61a and a side surface portion 61b. The upper surface portion 61a is provided closer to the vehicle interior than the flange portion 62, and as will be described later, a first flange portion 81 of the inlet vertical frame 71 and a first flange portion 101 of the window vertical frame 72 are joined to the upper surface portion 61a. The first flange portion 81 is an example of the "inlet-side first flange portion" in the present disclosure. The first flange portion 101 is an example of the "window-side first flange portion" in the present disclosure.

[0030] 3, the vertical ribs 43 are provided on the inside of the side outer plates 41 along the up-and-down direction of the railway vehicle 1. The vertical ribs 43 are formed from a metal plate material (having a plate thickness of, for example, 2.0 mm) such as carbon steel, stainless steel, or aluminum alloy.

[0031] In this embodiment, the vertical frame 43 includes an entrance vertical frame 71 and a window vertical frame 72 .

[0032] The entrance vertical ribs 71 are provided on both sides of the entrance opening 51 in the track direction. As shown in Fig. 7, the entrance vertical ribs 71 have a Z-shaped cross section when viewed in the longitudinal direction (i.e., the vertical direction of the railway vehicle 1). Specifically, the entrance vertical ribs 71 include a first flange portion 81, a second flange portion 82, and an upright portion 83.

[0033] 5 and 6, the first flange portion 81 is provided on the opposite side of the second flange portion 82 from the inlet opening 51. As shown in FIG. 7, the first flange portion 81 is provided closer to the vehicle interior than the second flange portion 82, and is joined to the upper surface portion 61a of the cross frame 42.

[0034] As shown in Figures 5 and 6, the second flange portion 82 is provided on the inlet opening 51 side relative to the first flange portion 81. As shown in Figure 7, the second flange portion 82 is provided on the vehicle exterior side (i.e., on the outside of the railway vehicle 1) relative to the first flange portion 81, and is joined to the side outer plate 41. The second flange portion 82 is an example of an "inlet-side second flange portion" in the present disclosure.

[0035] 7, the heights (i.e., positions in the inward and outward directions of the railway vehicle 1) of the first flange portion 81 and the second flange portion 82 are different in the entrance vertical frame 71. The erected portion 83 is a portion that connects the first flange portion 81 and the second flange portion 82.

[0036] 9, the window section vertical frame 72 has a hat-shaped cross section when viewed from its longitudinal direction (i.e., the vertical direction of the railway vehicle 1). Specifically, the window section vertical frame 72 has a channel portion 100 whose cross section when viewed from its longitudinal direction is U-shaped, and a first flange portion 101 and a second flange portion 102 that protrude on both sides in a direction perpendicular to the longitudinal direction (i.e., the track direction of the railway vehicle 1).

[0037] As shown in Fig. 8, the first flange portion 101 is provided on the opposite side of the second flange portion 102 from the window opening 52. As shown in Fig. 9, the first flange portion 101 is provided closer to the interior side of the vehicle than the second flange portion 102, and is joined to the upper surface portion 61a of the cross frame 42.

[0038] As shown in Fig. 8, the second flange portion 102 is provided on the window opening 52 side with respect to the first flange portion 101. As shown in Fig. 9, the second flange portion 102 is provided on the vehicle outer side of the first flange portion 101 and is joined to the shear plate 44. The second flange portion 102 is an example of the "window-side second flange portion" of the present disclosure.

[0039] In this way, as shown in FIG. 9, the first flange portion 101 and the second flange portion 102 of the window vertical frame 72 have different heights.

[0040] 4 and 9, the shear plate 44 is joined to the vehicle interior side of the side outer plate 41. This shear plate 44 is formed from a metal plate material (with a plate thickness of, for example, 2.0 mm) such as carbon steel, stainless steel, or aluminum alloy.

[0041] The inlet frame 45 is attached to the side skin 41 around the inlet opening 51 as shown in FIG.

[0042] [Reinforcement of opening corners] Corners (i.e., portions corresponding to the corners of a substantially rectangular shape) of openings (i.e., entrance openings 51 and window openings 52) in the side outer plates 41 that form the side surfaces 11a of the vehicle body structure 11 are prone to high stress and therefore need to be reinforced. While providing additional reinforcing members for reinforcement is one possible solution, this would increase the number of components. Furthermore, because it is difficult to simultaneously laser-weld three components, for example, the side outer plates 41, the cross beams 42, and the reinforcing members, if the reinforcing members are positioned offset from the side outer plates 41, the reinforcing members may not be able to sufficiently reinforce the openings in the side outer plates 41.

[0043] Therefore, in this embodiment, the flange portion of the vertical frame 43 is extended to fit along the entrance opening 51 and window opening 52 in the side outer panel 41 and integrated with the side outer panel 41 and the shear plate 44, thereby reinforcing the corners of the entrance opening 51 and window opening 52 while reducing the number of parts.

[0044] Specifically, as shown in Fig. 6, the second flange portion 82 of the inlet vertical frame 71 is provided with an extension portion 91 that extends along the inlet opening 51 and reinforces the corner of the inlet opening 51. This extension portion 91 is joined to and integrated with the side outer plate 41 at the corner of the inlet opening 51 as shown in Fig. 7. The extension portion 91 is an example of the "inlet extension portion" of the present disclosure.

[0045] 8, the second flange portion 102 of the window vertical frame 72 is provided with an extension portion 111 that extends along the window opening 52 and reinforces the corner of the window opening 52. This extension portion 111 is joined to and integrated with the shear plate 44 at the corner of the window opening 52, as shown in FIG. 9. The extension portion 111 is an example of the "window extension portion" of the present disclosure.

[0046] [About the entrance frame] In this embodiment, an entrance frame 45 is disposed around the entrance opening 51, and as shown in Fig. 10, the entrance frame 45 includes a frame member 121 and a reinforcing member 122. The frame member 121 is formed in a circumferential shape and is a member that forms the frame of the entrance frame 45. The reinforcing members 122 are provided at two locations (on both sides in the track direction) on the upper part of the frame member 121 and are members that reinforce the frame member 121.

[0047] Here, the reinforcing member 122 is formed so as to protrude from the frame member 121 toward the vehicle interior side. Since the reinforcing member 122 protrudes from the frame member 121 toward the vehicle interior side in this manner, a gap (a gap formed by the reinforcing member 122 and a surface of the frame member 121 having an L-shaped cross section that is parallel to the side outer plate 41) is provided between the frame member 121 and the reinforcing member 122. Therefore, in this embodiment, this gap is utilized as an insertion portion 123 that can be inserted into the side outer plate 41 and the second flange portion 82 (including the extension portion 91) of the entrance vertical frame 71 when the entrance frame 45 is attached to the entrance opening 51.

[0048] As a result, when attaching the entrance frame 45 to the entrance opening 51 of the side skin 41, first, as shown in Figures 11 and 12, the insides of the two insertion portions 123 at the top of the entrance frame 45 can be inserted into the side skin 41 and the entrance vertical frame 71 (more specifically, the extension portion 91 of the second flange portion 82). This then allows the top of the entrance frame 45 to fit together with the side skin 41 and the second flange portion 82 of the entrance vertical frame 71, and then the bottom of the entrance frame 45 is attached to the side skin 41, allowing the entrance frame 45 to be securely attached to the entrance opening 51. This makes it easy to attach the entrance frame 45 to the entrance opening 51.

[0049] [Operational effects of this embodiment] According to the railway vehicle 1 according to this embodiment described above in detail, the entrance vertical frame 71 has a second flange portion 82 that is joined to the side outer plate 41. The second flange portion 82 is provided with an extension portion 91 that extends along the entrance opening 51 and reinforces the corner of the entrance opening 51.

[0050] In this way, the corners of the inlet opening 51 can be reinforced by the extensions 91 of the inlet vertical ribs 71. The extensions 91 are not directly joined to the upper surfaces 61a of the cross ribs 42, but are directly joined to the side skin 41. Therefore, the extensions 91 can be positioned close to the side skin 41, and the corners of the inlet opening 51 can be reinforced efficiently by the extensions 91. In this way, the corners of the inlet opening 51 can be reinforced by the extensions 91 of the inlet vertical ribs 71, so there is no need to provide separate reinforcing members to reinforce the corners of the inlet opening 51. Therefore, the corners of the inlet opening 51 can be reinforced while reducing the number of parts.

[0051] The entrance frame 45 also has an insertion portion 123 at its upper portion that can be inserted into the side outer panel 41 and the second flange portion 82 of the entrance vertical frame 71 when attaching the side outer panel 41 to the entrance opening 51.

[0052] As a result, when attaching the entrance frame 45 to the entrance opening 51 of the side skin 41, the inside of the insertion portion 123 at the top of the entrance frame 45 can first be inserted into the side skin 41 and the second flange portion 82 of the entrance section vertical rib 71. This then allows the top of the entrance frame 45 to fit together with the side skin 41 and the second flange portion 82 of the entrance section vertical rib 71, and then the bottom of the entrance frame 45 is attached to the side skin 41, allowing the entrance frame 45 to be securely attached to the entrance opening 51. This makes it easy to attach the entrance frame 45 to the entrance opening 51.

[0053] Furthermore, the first flange portion 81 is formed only along the vertical direction, and the extension portion 91 of the second flange portion 82 extends in a direction perpendicular to the vertical direction of the vehicle in which the first flange portion 81 extends, branching off (i.e., moving away) from the first flange portion 81.

[0054] This allows the first flange portion 81 to more effectively reinforce the side skin 41 in the vertical direction, while the extension portion 91 of the second flange portion 82 can reinforce the corners of the inlet opening 51 of the side skin 41.

[0055] The window section vertical frame 72 also has a second flange portion 102 that is joined to the shear plate 44. The second flange portion 102 is provided with an extension portion 111 that extends along the window opening 52 to reinforce the corner of the window opening 52, and the extension portion 111 is joined to the shear plate 44 that is joined to the side outer panel 41.

[0056] In this way, the corners of the window opening 52 can be reinforced by the extensions 111 of the window section vertical frames 72. The extensions 111 are not directly joined to the upper surface portions 61a of the cross frames 42, but are directly joined to the shear plate 44. Therefore, the extensions 111 can be positioned close to the side outer panel 41, and the corners of the window opening 52 can be reinforced efficiently by the extensions 111. In this way, the corners of the window opening 52 can be reinforced by the extensions 111 of the window section vertical frames 72, so there is no need to provide separate reinforcing members to reinforce the corners of the window opening 52. Therefore, the corners of the window opening 52 can be reinforced while keeping the number of parts to a minimum.

[0057] Furthermore, the first flange portion 101 is formed only along the vertical direction, and the extension portion 111 of the second flange portion 102 extends in a direction perpendicular to the vertical direction of the vehicle in which the first flange portion 101 extends, branching off (i.e., separating) from the first flange portion 101.

[0058] This allows the first flange portion 101 to more effectively reinforce the side panel 41 in the vertical direction, while the extension portion 111 of the second flange portion 102 can reinforce the corners of the window opening 52 of the side panel 41.

[0059] The cross section of the entrance vertical frame 71 is formed in a Z-shape, while the cross section of the window vertical frame 72 is formed in a hat-shape.

[0060] In this way, by forming the cross-sectional shape of the vertical frame 43 to match the specifications of the entrance opening 51 or window opening 52, the corners of the entrance opening 51 or window opening 52 can be reinforced more effectively.

[0061] It should be noted that the above-described embodiments are merely examples and do not limit the present disclosure in any way. It goes without saying that various improvements and modifications are possible within the scope of the gist of the present disclosure.

[0062] For example, in the above description, as shown in Figure 3 etc., extension 91 reinforces the upper corner of entrance opening 51, but it may also reinforce the lower corner or both the upper and lower corners of entrance opening 51. Also, as shown in Figure 3 etc., extension 111 reinforces both the upper and lower corners of window opening 52, but it may also reinforce one of the upper or lower corners of window opening 52. [Explanation of symbols]

[0063] 1. Railway vehicles 11 Vehicle body structure 11a Side 12 carts 21 Frame 23 Side structure 31 Passenger entrance / exit 32 Windows 41 Side skin 42 Lateral bone 43 Vertical bone 44 Shear Plate 45 Entrance Frame 51 Inlet opening 52 Window Opening 61 Channel Section 61a Top part 71 Entrance longitudinal bone 72 Window vertical frame 81 First flange 82 Second flange 91 Stretching section 100 channel section 101 First flange 102 Second flange part 111 Stretching section 123 Insertion part

Claims

1. A railway vehicle having an underframe and a pair of side structures joined to both ends of the underframe in a sleeper direction, The side structure includes: a side skin forming an outer surface of the railcar; a cross frame provided along the track direction on the inside of the side outer plate; a vertical frame provided along the up-down direction on the vehicle interior side of the side outer panel; An entrance opening provided in the side outer panel as a passenger boarding / alighting opening; Equipped with The cross-section of the transverse bone is formed in a hat shape, The longitudinal bone is an inlet-side first flange portion that is joined to the upper surface portion of the cross bone; an inlet-side second flange portion joined to the side outer plate at a position closer to the vehicle exterior than the inlet-side first flange portion; Equipped with the inlet-side second flange portion is provided with an inlet extension portion that extends along the inlet opening portion and reinforces a corner portion of the inlet opening portion, and, an inlet frame attached around the inlet opening; the entrance frame has an insertion portion at an upper portion thereof that can be inserted into the side skin when attached to the entrance opening; A railway vehicle characterized by:

2. The railway vehicle of claim 1, The inlet-side first flange portion is formed only along the up-down direction, the inlet extension portion extends in a direction perpendicular to the inlet first flange portion so as to branch off from the inlet first flange portion; A railway vehicle characterized by:

3. The railway vehicle according to claim 1 or 2, the side structure includes a window opening provided in the side outer panel to serve as a window portion, The longitudinal bone is a window-side first flange portion joined to an upper surface portion of the cross beam; a window-side second flange portion that is joined to a shear plate that is joined to the side outer plate at a position closer to the vehicle exterior than the window-side first flange portion; Equipped with the window-side second flange portion is provided with a window extension portion that extends along the window opening and reinforces a corner of the window opening; A railway vehicle characterized by:

4. The railway vehicle of claim 3, The window-side first flange portion is formed only along the up-down direction, the window extension portion extends in a direction perpendicular to the window-side first flange portion so as to branch off from the window-side first flange portion; A railway vehicle characterized by:

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