JP2006117041A - Outer bellows for coupling part of railroad vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer bellows for a coupling part of a railroad vehicle capable of avoiding degradation of the durability attributable to considerable deformation of a corner part caused by compression or fluttering of outer bellows facing each other during the offset passage of the railroad vehicle on an acute curved part or a switch point. <P>SOLUTION: The outer bellows comprises a horizontally extending ceiling bellows member 2, substantially vertically extending right and left side bellows members 3A, 3B, and right and left curved shoulder bellows members 4A, 4B to couple these members with each other. The shoulder bellows member 4A(4B) comprises a curved tip part 4Aa, outer and inner thick-walled base parts 4Ab, 4Ac mounted on an end face of a vehicle body and located on the outer and inner sides, and outer and inner intermediate coupling parts 4Ab, 4Ae to connect the tip part to the outer and inner base parts, and is formed in a U-shaped section. A thin-walled portion to constitute a recessed groove part 4a extending in the longitudinal direction of the vehicle is provided on the outer portion or the inner portion of the shoulder bellows member from an intermediate portion of the base part to the intermediate coupling part with a predetermined space therebetween. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an outer hood for a connecting portion of a railway vehicle, which is mainly used for a high-speed railway vehicle.

  2. Description of the Related Art Conventionally, a vehicle hood that covers a space between railway vehicles is composed of an inner hood that covers the entire inner periphery between vehicles, and an outer hood that is provided only on the left and right sides of the vehicle outside the inner hood.

  The inner hood is formed in a bellows structure and serves to prevent foreign objects such as wind, snow, and dust from entering the vehicle, but it reduces the air resistance of the vehicle connection part and generates external noise due to airflow. It cannot be said that the reduction is sufficient.

  On the other hand, the outer hood is composed of rubber plates with a U-shaped cross section that are attached to the sides of the front and rear vehicles, ensuring improved aesthetics when the vehicle is viewed from the side and preventing passengers from falling from the platform. Playing a role.

  Thus, the outer hood is provided only on the front and rear sides of the vehicle body end surfaces of the front and rear vehicles, and the outer hood is attached at intervals in the connecting portion of the vehicle. It is impossible to prevent outside noise such as rail friction noise, rattling noise at the rail joints, wheel rolling noise, pantograph rubbing noise and resonance noise when passing through the iron bridge from entering the vehicle as it is. In addition, such an outer hood cannot be expected to have a great effect for the purpose of reducing running resistance in the case of a high-speed railway vehicle.

  Therefore, for the purpose of reducing the air resistance of the vehicle connecting part and reducing the generation of external noise due to the air flow, not only the left and right side parts but also the upper part (the roof side) And an outer hood provided over the left and right side portions have been proposed (see Patent Documents 1, 2, 3, and 4).

In addition, for the purpose of preventing noise intrusion from the bottom of the floor, a proposal is made of an outer hood composed of upper, lower, left and right linear members that cover the space between the vehicles, and corner members that are connected to the corners and arranged at the four corners. (See, for example, Patent Document 5).
Japanese Utility Model Publication No. 4-92480 (Claim 1, paragraph numbers 0007 to 0010 and FIGS. 1 and 2) JP-A-9-286329 (paragraph number 0022 and FIG. 1) Japanese Patent Laid-Open No. 11-171011 (paragraph number 0002 and FIGS. 8 and 9) JP 2003-291804 A (paragraph number 0010 and FIGS. 1 and 2) JP 2003-112625 A (pages 3 and 4)

  In the technique described in Patent Document 5, since the front end portions of the outer hood are in contact with each other, when the vehicle passes through a deviation such as a sharp curve portion or a branching point, the compression of the outer hoods facing each other and the flap are caused. , Deformation of the corner portion becomes remarkable and durability is lowered.

  Further, in order to avoid such a decrease in durability, the technique described in Patent Document 1 described above includes a corner portion that joins a portion located on both sides of the outer hood and a portion located on the upper side (roof), Although it is formed of a stretchable bellows member or a segment composite material, doing so causes a complicated structure and increases costs.

  In addition, the techniques described in Patent Documents 2 to 4 provide pleats from the skirt side, devise the deployment shape of the outer hood, or provide a notch with a predetermined width from the skirt toward the end of the arcuate top. However, they have front and rear outer hoods spaced apart, and are provided with pleats etc. to improve the attachment to the end face of the car body. It is not possible to sufficiently cope with the deformation at the corner portion when passing through the bias.

  An object of the present invention is to provide an outer hood for a connecting portion of a railway vehicle which absorbs deformation when the outer hoods facing (contact) each other rub against each other when passing through a bias and has improved durability.

  According to the first aspect of the present invention, there is provided a ceiling hood member attached near the upper edge of the vehicle body end surface, a left and right side hood member attached near the left and right edges of the vehicle body end surface, and the ceiling hood member attached to the upper left and right corner portions of the vehicle body end surface. A hood member and left and right shoulder hood members coupled to the left and right side hood members, wherein each of the hood members is bent by a flexible elastic sheet material, and the outer edge side of the end face of the vehicle body A railway vehicle having a U-shaped cross section having an outer and inner base portion that is attached to the vehicle body center side with an interval, and an outer and inner intermediate connecting portion that connects the tip portion with the outer and inner base portions. An outer hood for the connecting portion, wherein the outer hood is attached to the end face of the vehicle body and elastically contacts the opposing outer hood. Is it an intermediate part? A structure is provided in which a plurality of thin-walled portions that extend over the intermediate connecting portion and form a concave groove portion that absorbs a step difference in shape with the opposed outer hood are provided in parallel in the vehicle longitudinal direction. And

  In this way, for example, when one outer hood tries to enter the other outer hood when passing through a bias, the groove width of the recessed groove portion formed as a thin portion in the other outer hood is reduced. It expands with its flexibility and elasticity, deforms to absorb the shape difference (shape step) with one outer hood, follows the other shape (shape of one outer hood), and each shoulder hood member Unreasonable load does not act on deformation.

  According to a second aspect of the present invention, the groove portion has a constant groove depth, from the intermediate portion of the outer base portion to the intermediate portion of the inner base portion through the outer intermediate connecting portion, the tip portion, and the inner intermediate connecting portion. The groove portions formed and formed at least on the outer base portion, the outer intermediate connecting portion, and the upper portion of the tip portion can be configured to be closed in a straight traveling state of the railway vehicle. Here, “the closed groove portion is closed” means that the groove width of the (opening portion) of the recessed groove portion is almost 0, and includes a case where a gap is slightly opened.

  In this way, at least the outer base portion, the outer intermediate connecting portion, and the concave groove portion formed at the upper portion of the tip end portion are closed during straight running where the corner portion of the outer hood (shoulder hood member) hardly deforms. Therefore, generation of air noise can be prevented.

  According to a third aspect of the present invention, the distal end portion is formed near the inner base portion to form a thin portion, and the thin portion of the distal end portion and the thin portion constituting the concave groove portion have the same thickness. It is desirable to be.

  In this way, since the thin portion of the tip portion and the thin portion constituting the concave groove portion have the same thickness, when one outer hood attempts to enter the other outer hood, the opposite tip portions are in contact with each other. Because of the balance between the action of bending and deforming inward due to contact, and the action of expanding the groove width and trying to deform, it is difficult to apply an excessive load on the shoulder hood member, and in terms of durability It will be advantageous.

  As described above, the present invention extends in the vehicle longitudinal direction from the intermediate portion of the base portion to the intermediate connecting portion on the outer edge side portion or the vehicle body center side portion of the shoulder hood member attached to the upper left and right corner portions of the vehicle body end surface. Since the thin-walled portion constituting the groove portion is provided at a constant interval, when one outer hood attempts to enter the other outer hood, the groove portion expands in the other outer hood, It deforms to absorb the shape difference, follows the mating shape, and an unreasonable load does not work. Therefore, durability is improved.

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

  FIG. 1 is an explanatory diagram showing the overall configuration of a railroad car connecting outer hood according to the present invention, FIG. 2 is an enlarged view of a portion C in FIG. 1, FIG. 3 is a cross-sectional view taken along the line AA in FIG. It is sectional drawing in the BB line of FIG.

  The outer hood 1 shown in FIG. 1 has a U-shaped cross section as will be described later, and is provided on the rear end surface of the front vehicle or the front end surface of the rear vehicle over the entire circumference at the connecting portion of the railway vehicle. It is provided so as to face the outer hood attached to the front end face of the vehicle or the rear end face of the front vehicle. Therefore, the front and rear outer hoods 1 that are opposed to each other elastically contact each other, thereby covering the entire circumference of the space portion between the front and rear vehicles and partitioning the internal space between the front and rear vehicles and the external space outside the vehicle.

  The outer hood 1 extends in a substantially horizontal direction and is attached to the vicinity of the upper edge of the vehicle body end surface, and the left and right side hood members 3A and 3B that extend in the substantially vertical direction and are attached to the vicinity of the left and right side edges of the vehicle body end surface. The left and right shoulder hood members 4A and 4B are connected to each other, and the left and right lower hood members 5A and 5B are connected to each other. These sizes (lengths) are relatively determined in consideration of the relative movement of the vehicle. In other words, even if the front and rear outer hoods are in contact with each other, care is taken not to receive an excessive load from the other party. In addition, the center part of the ceiling hood member 2 is wider than the left and right end portions, and the left and right end portions have the same width as the side hood members 3A and 3B and the shoulder hood members 4A and 4B. In addition, with respect to the front and rear outer hoods, the joint portions (cuts) of the respective hood members 2, 3A, 3B, 4A, 4B are shifted in the longitudinal direction, and the joint portions hit each other and wear quickly. It is set as the structure which avoids doing.

The hood members 2, 3A, 3B, 4A, 4B, 5A, and 5B of the outer hood 1 are bent into a U-shaped section by bending a flexible elastic sheet material that is excellent in durability, weather resistance, strength, and flexibility. It is formed .
The ceiling hood member 2, left and right side hood members 3A and 3B, shoulder hood members 4A and 4B, and left and right lower hood members 5A and 5B are made of, for example, a natural rubber base or a material blended with EPDM (ethylene propylene rubber). Used.

  As shown in FIG. 2, a fitting convex portion 2A formed at the end portion of the ceiling hood member 2 is fitted into the end portion of the shoulder hood member 4A at the connecting portion between the ceiling hood member 2 and the shoulder hood member 4A. The surface is substantially flush with the mated state. As shown by the chain line in FIG. 3, the fitting convex portion 2A is formed with a small thickness, and the fitting portion (the overlapping portion of the ceiling hood member 2 (fitting convex portion 2A) and the shoulder hood member 4A) is rigid. Is considered not to be high. The joint portions between the shoulder hood members 4A and 4B and the ceiling hood member 2 or the side hood members 3A and 3B are also configured in the same manner.

  As shown in FIG. 3, the ceiling hood member 2 includes a curved tip end portion 2 a, and a thick outer side (outer edge side of the end surface of the vehicle body) and inner side (attached to the end surface of the vehicle body via the fixture 11). The vehicle body end face is provided with base portions 2b and 2c and outer and inner intermediate connecting portions 2d and 2e connected to each other, and is formed in a U-shaped cross section. And the front-end | tip part 2a is biased toward the said inner base part 2c, and the thin part 2aa is formed. That is, a thin-walled portion 2aa having a thickness of about 1/4 of the base portions 2b and 2c is formed at the tip portion 2a at a position that is biased toward the inside with respect to the cross-sectional center line of the ceiling hood member 2. The outer and inner intermediate connecting portions 2d and 2e are formed so that the thickness gradually decreases from the thick base portions 2b and 2c toward the distal end portion 2a (thin portion 2aa).

  The mounting bracket 11 is a fixture 12 having an outer base 2b sandwiched between a first bracket 11A having a U-shaped cross section that regulates the distance between the base portions 2b and 2c and an outer portion 11Aa of the first bracket 11A. And a third metal fitting 11C fixed by the fixing tool 13 with the other inner base portion 2c sandwiched between the inner part 11Ab of the first metal fitting 11A. A seal material 14 is filled between the first metal fitting 11A and the end surface of the vehicle body as necessary. The ceiling hood member 2 is held in a U-shaped cross section by the three metal fittings 11A to 11C.

  On the other hand, as shown in FIG. 4, the side hood member 3A (3B) has a curved tip 3Aa, thick bases 3Ab and 3Ac attached to the end face of the vehicle body via a fixture 16, and a space between them. It has intermediate connecting parts 3Ad, 3Ae that are connected, and is formed in a U-shaped cross section, but the mounting interval of the base parts 3Ab, 3Ac is narrower than the ceiling hood member 11, about 80%. The radius of the tip 3Aa (curved portion) is small and is about 50%.

  Similarly to the mounting bracket 11, the mounting bracket 16 of the side hood member 3A also has a first bracket 16A having a U-shaped cross section that regulates the distance between the base portions 3Ab and 3Ac, and an outer portion 16Aa on the first bracket 16A. A second metal fitting 16B that is fixed by a fixing tool 17 with a base portion interposed therebetween, and a third metal piece that is fixed by a fixing tool 18 with another base portion interposed between an inner portion 16Ab of the first metal fitting 16A. 16C. And in order to narrow the attachment space | interval of base 3Ab and 3Ac, the space | interval of the inner side part of the 1st metal fitting 16 and an outer side part is made shorter than the attachment metal fitting 11 only by making the attachment space | interval narrow.

  Further, as shown in FIGS. 5 (a) and 5 (b), the cross-sectional shape of the shoulder hood member 4A (4B) is also a curved tip portion 4Aa and a thick wall attached to the end surface of the vehicle body via a fixture (not shown). 4Ab, 4Ac, and intermediate connecting portions 4Ad, 4Ae connecting them, formed in a U-shaped cross section, and the mounting interval between the base portions 4Ab, 4Ac is narrower than the ceiling hood member 11, and the tip portion 4Aa (This is similar to the side hood member 3A (3B)). Then, the groove portion 4a is formed by the thin portion with a constant interval in the lower portion, and the groove portion (width of the opening portion) of the groove portion 4a is deformed by the elasticity of the shoulder hood member 4A itself. Can change. It is possible to make the groove depth shallower as in the groove portion 4a 'of the shoulder hood member shown in FIG. Further, in the vicinity of the joint portion with the ceiling hood member 2, a concave groove portion 4b whose groove interval can be changed is also formed in the outer portion.

  According to the above configuration, when one outer hood attempts to enter the other outer hood, the groove width of the recessed groove portion 4b widens in the other outer hood so as to absorb the shape difference from the one outer hood. Deforms, follows the shape of the other party, and continues to operate smoothly.

  In addition to the above embodiment, the present invention can be configured as follows.

  (i) Although the concave groove portion is provided in the inner portion (the vehicle inner side) of the shoulder hood member 4A ', it can also be provided in the outer portion 4c as shown in FIGS. 6 (a) and 6 (b).

  (ii) Further, as shown in FIGS. 7A to 7C, it is also possible to form the groove 4a ″ from the inner part to the outer part of the shoulder hood member 4A ″. In this case, the concave groove portion located in the outer portion is configured so that the opening of the concave groove portion is closed and dust does not enter the groove or become air resistance when not deformed. Then, the boundary between the portion where the opening portion of the concave groove portion 4a ″ is closed and the open portion is as shown in FIG. 7C.

  (iii) The ceiling hood member 2 and the left and right side hood members 3A and 3B are formed of molded products having the same cross-sectional shape, and by changing the width of the mounting portion to the vehicle body, the members 2, 3A and 3B The cross-sectional shape of the tip part and the mounting part is changed. However, it is molded in advance using a molding die into an optimum shape suitable for each part of the ceiling hood member 2 and the side hood members 3A and 3B. It is also possible to assemble and manufacture them.

It is explanatory drawing which shows the whole structure of the outer hood for a connection of the railway vehicle which concerns on embodiment of this invention. It is the C section enlarged view of FIG. It is sectional drawing in the AA of FIG. It is sectional drawing in the BB line of FIG. The shoulder hood member which concerns on embodiment of this invention is shown, (a) is a front view, (b) is CC sectional view taken on the line of Fig.5 (a), (c) is FIG.5 (b) about a modification. ). (A) is a front view of the shoulder hood member of other embodiment, (b) is sectional drawing in the DD line | wire of Fig.6 (a). (A) is a front view of a shoulder hood member of still another embodiment, (b) is a cross-sectional view taken along line EE in FIG. 7 (a), and (c) is a line FF in FIG. 7 (b). FIG. It is a schematic perspective view which shows the connection part of the conventional railway vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer hood 2 Ceiling hood member 2a Tip part 2aa Thin part 2b, 2c Base part 2d, 2e Intermediate connection part 3A, 3B Side cover member 3Aa Tip part 3Aa Thin part 3Ab, 2Ac Base part 3Ad, 2Ae Intermediate connection part 4A, 4A " , 4B Shoulder hood 4a, 4a ', 4a "groove

Claims (3)

A ceiling hood member attached near the upper edge of the vehicle body end surface, a left and right side hood member attached near the left and right edges of the vehicle body end surface, and the ceiling hood member and left and right side hoods attached to the upper left and right corners of the vehicle body end surface. Left and right shoulder hood members that are joined to the member, and each hood member is bent between the flexible elastic sheet material, thereby separating the curved tip portion from the outer edge side of the vehicle body end surface and the vehicle body center side. An outer hood for a connecting portion of a railway vehicle having a U-shaped cross section having outer and inner base portions to be attached and outer and inner intermediate connecting portions connecting the tip portion and the outer and inner base portions. There,
In the state attached to the end face of the vehicle body, it is in elastic contact with the opposing outer hood, and extends from the intermediate portion of the base portion to the intermediate connecting portion on the outer edge side portion or the vehicle body center side portion of the shoulder hood member. A connecting part for a railway vehicle, characterized in that a plurality of thin-walled portions forming a recessed groove part that extends and absorbs a step difference in shape with the opposing outer hood is provided in parallel to the longitudinal direction of the vehicle Exterior hood. The concave groove portion has a constant groove depth and is formed from the intermediate portion of the outer base portion to the intermediate portion of the inner base portion through the outer intermediate connecting portion, the tip portion, and the inner intermediate connecting portion,
The outer hood for a connecting portion of a railway vehicle according to claim 1, wherein at least the outer base portion, the outer intermediate connecting portion, and the recessed groove portion formed in the upper portion of the tip end portion are closed in a straight traveling state of the railway vehicle.   3. The railway according to claim 1, wherein a thin-walled portion is formed in the distal end portion so as to be biased toward the inner base portion, and the thin-walled portion of the distal-end portion and the thin-walled portion constituting the concave groove portion have the same thickness. Outer hood for connecting parts of vehicles.

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