JP5315303B2 - Rail vehicle structure - Google Patents

Description

  The present invention relates to a structure of a railway vehicle, and more particularly to a structure of an upper corner portion of a side doorway.

  Conventionally, when a side structure of a railway vehicle is manufactured using an extruded shape of an aluminum alloy, the extruded shape is arranged so that the extrusion direction of the extruded shape coincides with the longitudinal direction of the vehicle body. When the door is formed, door-end pillars are arranged at both front and rear ends of the side doorway, and the ends of the extruded shape members are covered with the door-end pillars. On the other hand, the upper horizontal portion of the side entrance is a structure in which the extruded shape member has two face plate portions and a web plate portion that connects them, and therefore, by using the face plate portion or the web plate portion, Special members are not required.

  In the case of such a structure, it is necessary to reduce the concentration of stress at the upper corner of the side doorway where the door column and the upper horizontal part of the side doorway intersect. Therefore, a substantially triangular reinforcing member with a curved surface facing the side doorway is fixed to the upper corner by welding separately.

  Further, there has also been proposed one in which an edge member (frame member) is friction stir welded over the entire periphery of the side doorway (see, for example, Patent Documents 1 and 2).

Japanese Patent No. 3575749 JP 2008-126782 A

When the reinforcing member is provided by welding to the upper corner portion of the side doorway, there are the following problems.
・ The amount of welding increases, which is disadvantageous in terms of cost.
・ The amount of welding increases, thermal distortion due to welding occurs, and the appearance of the outer plate deteriorates.
A contact point between the reinforcing member, the door column and the upper horizontal portion of the side doorway becomes a welded portion, and the welded portion concentrates on a portion where the acting stress increases, which is disadvantageous in terms of strength.

  Also, the ones described in Patent Documents 1 and 2 are disadvantageous in terms of cost because the length of the friction stir welding part becomes long.

  The present invention uses a reinforcing member for the strength of the upper corner portion of the side doorway where the door column and the upper horizontal portion of the side doorway intersect without providing an edge member (frame member) over the entire circumference of the side doorway. An object of the present invention is to provide a railway vehicle structure that can be secured.

The invention according to claim 1 is an outer surface plate portion serving as an outer surface of a side structure, an inner surface plate portion disposed in parallel with the outer surface plate portion and serving as an inner surface of the side structure, the outer surface plate portion, and the inner surface plate. A plurality of web plate portions that connect to each other, an extruded shape whose extrusion direction is the vehicle longitudinal direction, a side doorway that is formed in the extruded shape and has an arcuate upper corner portion, and the side A door-end pillar that closes the left and right ends of the doorway, and the door-end pillar extends in the vertical direction and closes the left and right ends of the side doorway, and the first part is integrated with the first part. A second portion extending to a part of the upper surface portion of the side doorway and covering the upper corner portion of the side doorway, and the upper surface portion of the side doorway excluding the second portion is , is formed by the web plate portion of the extruded frame members, this The features.
In this way, a reinforcing member for corner reinforcement is not necessary, the number of parts can be reduced, and the weight can be reduced. In addition, since the welding amount can be reduced, the working time and the manufacturing cost can be reduced. Since the corner reinforcement can be abolished, the welding exposed to the outer plate surface is greatly reduced, and the appearance is improved. Further, the joint portion can be separated from the corner portion where high stress is generated.

As described in claim 2 , the door-end pillar includes a main body portion and two side edge portions extending in a direction orthogonal to the main body portion in a cross-sectional view, of the side edge portions. It is desirable that the side edge portion located on the outer surface side of the side structure has a shorter length than the side edge portion located on the inner surface side of the side structure .

  In this way, the front and rear surface portions that become the peripheral edge of the side doorway can be formed by the flat main body portion, and the peripheral edge (cut surface) of the side doorway formed in the side structure by the side edge portion that forms the inner surface side. ) Can be easily hidden.

The side edge part located in the outer surface side of the said side structure among the said side edge parts further contains the level | step-difference part comprised from the inclination part and the extension part in the front end side. In the step portion, the outer face plate portion of the extruded shape member can be welded.

According to a fourth aspect of the present invention, in the extruded shape member, a notch recess is formed so as to correspond to the shape of the door column from the left and right ends of the side doorway to the upper corner portion, and the notch recess It is desirable that the door column is fitted into the door.
If it does in this way, those position alignment can be performed only by inserting a door-end pillar in a notch crevice. Moreover, the contact of the door-end pillar, the corner reinforcement part, and the opening upper end horizontal part is in the shape member arranged in the longitudinal direction, and the strength is improved.

According to claim 5, further comprising a side plate on the side beam, provided at the lower end of the left and right ends of the side doorway, and having an arcuate lower corner portion, It can be set as the structure which further has a notch part engaged with the said side plate in the lower end part .

  If it does in this way, the lower end part of a door-end pillar can also be extended to the lower end part of a side entrance, without spoiling appearance.

  Since the present invention is configured as described above, a reinforcing member for corner reinforcement is not necessary, and the number of parts can be reduced. In addition, since the welding amount can be reduced, the manufacturing cost can be reduced. Since the corner reinforcement can be abolished, the welding exposed to the outer plate surface is greatly reduced, and the appearance is improved.

It is a side view showing one embodiment of a structure of a railway vehicle according to the present invention. The state which looked at the A section of FIG. 1 from the vehicle inner side is shown, (a) is a front view, (b) is a side view. The state before attaching a door-end pillar to the upper and lower corner portions of the side doorway is shown. (C) is a perspective view of the lower corner portion as viewed obliquely from above the vehicle interior side, (d) is a perspective view of the lower corner portion as viewed from obliquely above the vehicle exterior side, and (e) is a perspective view of FIG. FIG. The door-end pillar is shown, (a) is a view seen from the inside of the vehicle, (b) is a view seen from the direction B of FIG. 4 (a), and (c) is a view seen from the outside of the vehicle. It is sectional drawing of a door-end pillar. It is sectional drawing in CC line of Fig.4 (a). (A) is the FF sectional view taken on the line of FIG. 2, (b) is the GG sectional view of FIG. 2, (c) is the MM sectional view of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2 (a) and 2 (b), the side structure 1 is configured by arranging a plurality of extruded shape members 2 so that the extrusion direction is the longitudinal direction of the vehicle body. In addition, the joining line of a some extrusion shape material is shown by L1-L5. A side entrance 1 </ b> A is formed in the side structure 1.

  The extruded shape member 2 has two face plate portions 2a and 2b and a web plate portion 2c connecting them, and one of the two face plate portions 2a and 2b forms an outer surface of the side structure 1. The The side doorway 1A is formed by joining the extruded shape member 2 to form the side structure 1 and then cutting off a part of the extruded shape member 2.

  The upper surface portion of the side entrance 1A is configured by utilizing the side surface of the web plate portion 2c of the extruded shape member 2 (or the end surface of the shape member 2 itself). That is, as shown in FIGS. 2A and 2B, the side surface of the web plate portion 2c of the extruded shape member 2 is arranged so as to coincide with the position of the upper surface portion of the side entrance 1A. The side surface is the upper surface portion of the side entrance 1A extending in the horizontal direction as it is.

  The side structure 1 is formed with a notch recess 1B extending to the vicinity of the upper corner portion except for the lower corner portion at the front and rear surface portions of the side entrance 1A, and the door column 11 is fitted into the notch recess 1B. It is out. That is, the notch recess 1 </ b> B is notched in a shape corresponding to the shape of the door-end pillar 11.

  As shown in FIGS. 3A and 3B, the notch recess 1B becomes an upper recess 1Ba having a size corresponding to the width of the door column 11 at a portion beyond the upper corner portion of the side entrance 1A. The width is maintained and extends to the lower corner portion. Further, at the lower corner portion of the side entrance 1A, as shown in FIG. 2B and FIGS. 3C to 3E, the face plate portion 2a of the extruded shape member 2 disposed on the upper side of the side beam 14 is provided. A curved corner plate portion 2d is formed.

  As shown in FIGS. 4 (a), (b), (c), and FIGS. 5 and 6, the door-end pillar 11 is arranged from the vicinity of the lower end portion of the side entrance 1A to the upper end portion to form the front and rear surface portions of the side entrance 1A. A linear first portion 11A and a second portion 11B which is disposed at a portion corresponding to the upper corner portion of the side entrance 1A and forms a curved corner portion of the side entrance 1A are formed integrally. It is a thing. Further, as shown in FIG. 5, in the cross section, the door-end pillar 11 has a flat main body portion 11a having a substantially rectangular cross section and the same direction from both side edges of the main body portion 11a (the outward direction of the side doorway 1A). In the channel shape having two side edge portions 11b and 11c extending in parallel to the direction perpendicular to the main body portion 11a), the side edge portion 11c that forms the outer surface side is the inner edge portion 11c. It is shorter than the side edge part 11b which forms the side surface side. The lengths of the side edges 11b and 11c are changed. If the lengths are the same, the side edges 11b and 11c are welded at the same position, and the distortion due to the heat is generated at the same position. This is because the production accuracy may be affected.

  The side edge portion 11c that forms the outer surface side has an extension portion 11cb that forms a stepped portion with the inclined portion 11ca sandwiched at the tip side, and as shown in FIG. The part 2a is fitted. The inclined portion 11ca functions to form a groove for welding, and the extension portion 11cb functions as a backing metal for the face plate portion 2a to ensure the welding quality between the side edge portion 11c and the face plate portion 2a. It can be done. Since the extruded shape member (side edge portion 11c) is formed in this way, work such as groove processing becomes unnecessary, which is advantageous in reducing work time.

  Further, in the upper end portion of the door-end pillar 11, that is, in the vicinity of the tip portion of the second portion 11B, the side edge portion 11b is cut as shown in FIG. On the other hand, a cutout portion 11e that engages with the curved corner plate portion 2d is formed at the lower end portion of the door post 11 (see FIGS. 3E and 4B). That is, the side edge portion is cut off at the lower end portion of the second portion 11B, and the face plate portion 2a (curved corner plate portion 2d) is positioned at that portion.

  When the door column 11 is fitted in the notch recess 1B of the side entrance 1A, the cut surface formed in each extruded shape member 2 to form the side entrance 1A in the side structure 1 is notch recess. Since the door-end pillar 11 is fitted in 1B, the door-end pillar 11 is blocked by the door-end pillar 11 and is not visible in appearance. A part of the front / rear surface portion and the upper surface portion of the side doorway 1A (a portion excluding the central portion formed by the side surface of the web plate portion 2c) is formed by the door-end pillar 11.

  Moreover, as shown to Fig.7 (a), the main-body part 11a (2nd part 11B) of the door-end pillar 11 continues to the upper surface part of the side entrance 1A which the end surface of the extrusion shape member forms. The surface (inner peripheral curved surface) is arranged as shown in FIG. 2B, and forms a part of the upper surface portion of the side entrance 1A.

  The surface (inner peripheral curved surface) of the main body portion 11a (second portion 11B) extends in the horizontal direction in the vicinity of being connected to the upper surface portion of the side doorway 1A formed by the end surface of the extruded shape member. Thereby, the connection part of the side structure 1 (extruded shape member 2) and the door-end pillar 11 is connected by the linear part. Further, in this portion, since the side edge portion 11b is cut, the cut surface of the extruded shape member 2 is exposed, so that the closing plate 12 is provided.

  In the above-described embodiment, the extruded shape member has a double skin structure having two face plate portions and a web plate portion for connecting the two face plate portions, but a single skin structure shape can also be used. In this case, in the double skin structure, the structure is the same as that in which the face plate portion on the inner side of the vehicle body is omitted, and the face plate portion forming the outer surface of the side structure and the direction orthogonal to the face plate portion in the vehicle. A web plate portion extending toward the body side.

DESCRIPTION OF SYMBOLS 1 Side structure 1A Side entrance 1B Notch recessed part 2 Extrusion shape 2a, 2b Face plate part 2c Web board part 11 Door-end pillar 11a Main body part 11b, 11c Side edge part 11d Step part 11A 1st part 11B 2nd part

Claims (5)

A plurality of outer surface plate portions that serve as outer surfaces of the side structures, an inner surface plate portion that is disposed in parallel with the outer surface plate portions and that serves as an inner surface of the side structure, and that connects the outer surface plate portions and the inner surface plate portions. An extruded shape member having a web plate portion, the extrusion direction being the vehicle longitudinal direction,
A side doorway formed in the extruded profile and having an arcuate upper corner;
A door post that closes the left and right ends of the side doorway,
The door pillar is formed integrally with the first portion extending in the vertical direction and closing the left and right ends of the side entrance, and covers the upper corner portion of the side entrance, A second portion extending to a part of the upper surface portion of the side doorway,
The structure of the railway vehicle , wherein an upper surface portion of the side doorway excluding the second portion is formed by the web plate portion of the extruded shape member . The door pillar has a main body part and two side edges extending in a direction orthogonal to the main body part in a cross-sectional view,
The side edge part located in the outer surface side of the said side structure among the said side edge parts is shorter than the side edge part located in the inner surface side of the said side structure. The structure of a railway vehicle. Of the side edges, the side edge located on the outer surface side of the side structure further includes a stepped portion formed of an inclined portion and an extended portion on the tip side, and the extruded shape member in the stepped portion. The structure of a railway vehicle according to claim 2, wherein the outer side plate portion is welded and joined. The extruded shape member is formed with a notch recess corresponding to the shape of the door-end pillar from the left and right ends of the side doorway to the upper corner portion, and the door-end pillar fits into the notch recess, The structure of a railway vehicle according to any one of claims 1 to 3. A side plate on the side beam, provided at the lower ends of the left and right ends of the side doorway, further comprising a side plate having an arcuate lower corner portion;
The structure of a railway vehicle according to any one of claims 1 to 4, wherein the door-end pillar further includes a notch that engages with the side plate at a lower end thereof .

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