railway vehicles

Abstract

To provide a railroad vehicle capable of mounting an interior material configured as one member without being divided by absorbing dimensional tolerance of a body structure.SOLUTION: An interior material is a flexible plate-like bod, and integrally includes an end edge part on one end side arranged at one side in a prescribed direction to be held by an interior material support part on one side, an end edge part of the other end side arranged at the other side in the prescribed direction to be held by an interior material support part on the other side, and a circular arc part curved in a circular arc shape between the end edge part on the one end side and the end edge part on the other end side. In at least one of the one end side and the other end side of the interior material, an elastic material is interposed between the end edge part and the interior material support part.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a railway vehicle. [Background technology]

[0002] For large-scale transportation machinery such as railway vehicles, improving manufacturability, reducing rework at the manufacturing site, and shortening manufacturing time are important. In recent years, a structure called a double-skin structure has been widely adopted as a lightweight, high-strength, and easily manufacturable car body structure. This double-skin structure is made of hollow extruded aluminum alloy profiles with a pair of outer and inner panels and connecting ribs that connect them. After manufacturing panel materials such as the underframe (floor), side structures, and roof structures, these panel materials are assembled into a hexahedron. The double-skin structure is lightweight and has high bending rigidity. Furthermore, it is easy to manufacture because it uses extruded profiles with the same cross-sectional structure along the vehicle length.

[0003] Railway vehicles are manufactured by first assembling the six-sided double-skin structure, and then attaching the underfloor equipment and interior materials to it. During this process, dimensional tolerances can occur when the structure is assembled due to various factors, such as the longitudinal deflection of the double-skin structure caused by its own weight when it is assembled into a six-sided structure, the thermal strain that occurs when the floor structure, side structure, and roof structure are welded together, and the load caused by hanging the underfloor equipment. As a result, when attaching the interior materials, misalignment can occur between the mounting points on the structure and the interior materials, requiring adjustments at the manufacturing site or the need to align the parts on site before drilling fastening holes, which can impair the ease of installing the interior materials.

[0004] In response to this, as a method for absorbing the above-mentioned dimensional tolerances, for example, Patent Document 1 discloses a structure in which a small ceiling board member, which is an interior material, is attached by dividing it into a ceiling member and a side member. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-175543 Summary of the Invention [Problem to be solved by the invention]

[0006] However, with the technology of Patent Document 1 mentioned above, the interior material is divided into two parts, which results in a problem of a large number of parts, and the surface of the interior material is not continuous and smooth between the ceiling member and the side member, so when an advertising sheet or the like is attached to the surface of the interior material, the advertisement page may become distorted, causing a sense of discomfort to the viewer.

[0007] The present invention has been made in consideration of the above points, and aims to provide a railway vehicle in which interior materials that are constructed as a single component without being divided can be installed while absorbing the dimensional tolerances of the body structure. [Means for solving the problem]

[0008] In order to achieve the above object, one representative railway vehicle of the present invention comprises: A railway vehicle in which interior materials are provided on a structure constituting a car body, The body structure is provided with an interior material support portion on one side in a predetermined direction and an interior material support portion on the other side in the predetermined direction, the interior material support portion being spaced apart in the predetermined direction, The interior material is a flexible plate-like body, and is integrally provided with an edge portion on one end side that is disposed on one side in the predetermined direction and held by the interior material support portion on the one side, an edge portion on the other end side that is disposed on the other side in the predetermined direction and held by the interior material support portion on the other side, and an arc portion that curves in an arc shape between the edge portion on the one end side and the edge portion on the other end side, At least one of the one end side and the other end side of the interior material, an elastic material is interposed between the edge portion and the interior material support portion. death, a retaining portion including a retainer, a spacer, and the elastic material is provided on the edge portion on at least one end side of the interior material; The holder has two opposing plate portions spaced apart from each other and facing each other, a spacer insertion hole through which the spacer is inserted is provided in the edge portion on at least one end side; the spacer is inserted and held between the two opposing plate portions of the holder in a state where the spacer is inserted through the spacer insertion hole of the end edge portion, the elastic material is interposed between the two opposing plate portions and the edge portions to elastically support the edge portions, The edge portion on at least one end side is held by the interior material support portion by attaching the holder to the interior material support portion in a holding portion attachment state in which the spacer inserted through the spacer insertion hole is held between the two opposing plate portions of the holder and the edge portion is elastically supported by the elastic material. This is achieved by: [Effects of the Invention]

[0009] According to the present invention, even if the dimensional tolerances of the body structure when assembled into a hexahedron are large, the interior material mounting structure can absorb the dimensional tolerances of the body structure, so the interior material can be mounted with fewer steps, improving the manufacturability of the vehicle. In addition, since an elastic material is interposed between the interior material and the body structure, it is possible to suppress interior noise caused by vibration of the interior material. Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic side view of a railway vehicle according to an embodiment of the present invention. [Figure 2] 2 is a general cross-sectional schematic view of section AA in FIG. 1; [Figure 3] 1 is a perspective view of a ceiling interior material according to a first embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram illustrating the configuration of a horizontal portion holding portion in the first embodiment of the present invention. [Figure 5] FIG. 3 is a cross-sectional view of a horizontal portion holding portion in the first embodiment of the present invention. [Figure 6] FIG. 10 is a perspective view of a ceiling interior material according to a second embodiment of the present invention. [Figure 7] FIG. 10 is a schematic diagram illustrating the configuration of a horizontal portion holding portion in a second embodiment of the present invention. [Figure 8] FIG. 10 is a schematic diagram illustrating a modified example in which the holding fitting of the horizontal holding portion is partially cut away. [Figure 9] 10 is a schematic diagram illustrating another modified example in which the elastic material is continuous in the vehicle longitudinal direction. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic side view of a railway vehicle 1 according to an embodiment of the present invention, and Fig. 2 is a schematic general cross-sectional view taken along line AA in Fig. 1.

[0012] The car body of the railway vehicle 1 is composed of a roof structure 11, a pair of side structures 12, a floor structure 13, and a pair of end structures 14, forming a hexahedron. Windows 15 and side doors 16 are provided in the side structures 12, an air conditioning unit 17 is mounted on the roof structure 11, and underfloor equipment 18 is suspended from the floor structure 13. The interior of the railway vehicle 1 is equipped with ceiling interior materials 21, side interior materials 22, an interior floor 23, seats 24, luggage racks 25, handrails 26, air conditioning ducts 27, and lighting fixtures 28. The roof structure 11, the side structures 12, and the floor structure 13 are mainly formed from hollow extruded members known as double-skin structures, which are lightweight, have high bending rigidity, and are easy to manufacture because they use extruded members with the same cross-sectional structure along the length of the vehicle.

[0013] When assembling the railway vehicle 1, first, a hexahedron is assembled by welding together the roof structure 11, the side structures 12, the floor structure 13, and the end structure 14. At this time, dimensional tolerances arise when the structure is assembled due to the effects of bending of the structure in the longitudinal direction of the vehicle due to its own weight when assembled into a hexahedron, the effects of thermal strain that occurs when the roof structure 11, the side structures 12, and the floor structure 13 are welded together, and the effects of the load caused by hanging underfloor equipment 18. Interior fittings such as seats 24, luggage racks 25, handrails 26, and air conditioning ducts 27 are attached to a structure with dimensional tolerances, so these interior fittings must be attached while accommodating the dimensional tolerances of the structure.

[0014] In particular, the ceiling interior material 21 has one end attached to the curtain rail 30 provided on the roof structure 11 and the other end attached to the luggage rack mounting bracket 29 attached to the side structure 12, so if these mounting parts (curtain rail 30 and luggage rack mounting bracket 29) do not meet the specified dimensions, the ceiling interior material 21 cannot be properly mounted. This necessitates adjustments at the manufacturing site, or the mounting parts on the structure side must be aligned with the mounting parts on the interior material side on site, and mounting holes on either the interior material side or the structure side must be drilled on site before mounting, which can lead to rework at the manufacturing site and can impair the workability of mounting the interior material.

[0015] (First embodiment) As an interior material mounting structure for solving the above problems, FIG. 3 shows the configuration of a ceiling interior material 21 according to a first embodiment of the present invention. The ceiling interior material 21 is a plate-like body integrally including a horizontal portion 31, a vertical portion 32, an inclined portion 37, an intermediate vertical portion 38, and an arc portion 33 connecting the inclined portion 37 and the vertical portion 32. When the ceiling interior material 21 is attached to the vehicle body, the horizontal portion 31 is substantially perpendicular to the vertical direction. The intermediate vertical portion 38 extends substantially vertically downward from the outer edge of the horizontal portion 31 in the vehicle width direction. The inclined portion 37 extends obliquely downward and outward in the vehicle width direction from the lower edge of the intermediate vertical portion 38. The arc portion 33 extends in an arc-like curve from the outer edge of the inclined portion 37 in the vehicle width direction so as to bulge outward from the vehicle body structure. The vertical portion 32 extends substantially vertically downward from the lower edge (the edge on the outer side in the vehicle width direction) of the arc portion 33. As will be described later, the horizontal portion 31 is provided with a horizontal portion holding fitting 34, and the vertical portion 32 is provided with a vertical portion holding fitting 35, each via an elastic member 36. In the following description, both the horizontal portion holding fitting 34 and the vertical portion holding fitting 35 may be referred to as holding fittings 34, 35.

[0016] The ceiling interior material 21 is made of a flexible material and is configured as a single member without being divided. The ceiling interior material 21, which has an arc portion 33 in the middle, can easily increase deflection deformation compared to a flat plate. Flexible materials include, but are not limited to, a single sheet made of plastic resin or a sandwich panel in which thin face panels made of aluminum or metal are bonded to both sides of a core material such as foamed resin. Furthermore, the elastic material 36 can be made of, for example, a rubber-based material such as CR rubber or foamed urethane rubber, but is not limited to these.

[0017] Next, the horizontal portion holding portion (holding portion) 39 provided on the horizontal portion 31 of the ceiling interior material 21 will be described with reference to Fig. 4 and Fig. 5. Fig. 4 is a schematic diagram of the configuration of the horizontal portion holding portion 39 in the first embodiment, and Fig. 5 is a cross-sectional view of the horizontal portion holding portion 39. The horizontal portion holding portion 39 is composed of a horizontal portion holding metal fitting (holding tool) 34, a spacer 42, and an elastic material 36.

[0018] The horizontal section holding fitting 34 has a generally U-shaped cross section in which a connecting plate 51 connects one edge of two opposing plate parts 50 that are spaced apart from each other vertically, and is attached to the body structure side. The horizontal section holding fitting 34 is formed by bending a metal plate, and is elastically deformable so as to increase or decrease the separation width between the upper and lower opposing plate parts 50. The upper and lower opposing plate parts 50 are provided with holes (bolt insertion holes) 34a through which bolts 43, described below, can be inserted.

[0019] The spacer 42 has a cylindrical shape, and the horizontal portion 31 of the ceiling interior material 21 has a circular hole (spacer insertion hole) 41 through which the spacer 42 can be inserted. A bolt 43 is inserted into the inner diameter portion of the spacer 42. The spacer 42 is inserted into the hole 41 of the horizontal portion 31 and is then inserted and held between the upper and lower opposing plate portions 50 of the horizontal portion holding bracket 34. For example, by setting the height of the spacer 42 to be greater than the separation width (vertical width) between the upper and lower opposing plate portions 50 in an unloaded state (a state in which the spacer 42 is not elastically deformed), and fitting the spacer 42 between the upper and lower opposing plate portions 50, the horizontal portion holding bracket 34 elastically deforms, widening the separation width between the opposing plate portions 50, and the spacer 42 can be sandwiched between the upper and lower opposing plate portions 50.

[0020] The elastic member 36 has a generally U-shaped cross section, consisting of an upper portion 36a and a lower portion 36b that are spaced apart and facing each other, and a side portion 36c that is located at one end of the upper portion 36a and the lower portion 36b. Circular holes 36d are provided in the upper portion 36a and the lower portion 36b, through which a spacer 42 can be inserted. The elastic member 36 is fitted inside the horizontal portion retaining bracket 34, with the horizontal portion 31 of the ceiling interior material 21 inserted between the upper portion 36a and the lower portion 36b. In this state, the upper portion 36a contacts the inner surface of one (upper) opposing plate portion 50. The lower portion 36b contacts the inner surface of the other (lower) opposing plate portion 50. The side portion 36c is in close proximity to or in contact with the inner surface of the connecting plate portion 51. The upper and lower portions 36a and 36b of the elastic member 36 are respectively interposed between the two opposing plate portions 50 and the horizontal portion 31, and elastically support the horizontal portion 31 from above and below.

[0021] Next, with reference to FIG. 4 , a method for assembling the horizontal section holder 39 (a method for attaching it to the horizontal section 31) will be described. First, the elastic member 36 is fitted from the horizontal outside into the region of the horizontal section 31 of the ceiling interior material 21 where the hole 41 is provided. At this time, the position of the elastic member 36 is adjusted so that the hole 41 of the horizontal section 31 and the upper and lower holes 36d of the elastic member 36 penetrate vertically (overlapping and communicating over substantially the entire area). Next, a spacer 42 is inserted vertically from below into the aligned hole 41 and the upper and lower holes 36d. Finally, the horizontal section holder 34 is fitted from the horizontal outside, thereby forming the horizontal section holder 39 and attaching it to the horizontal section 31 (the holder-attached state). When fitting the horizontal section holder 34, the position of the horizontal section holder 34 is adjusted so that the upper and lower holes 34a of the horizontal section holder 34 and the inner diameter portion of the spacer 42 penetrate vertically (overlapping and communicating over substantially the entire area).

[0022] It is preferable that the outer diameter of the spacer 42 be set larger than the inner diameter of the upper and lower hole portions 34a of the horizontal portion holding fitting 34. Setting the outer diameter of the spacer 42 larger than the inner diameter of the hole portion 34a makes it possible to prevent the spacer 42 from jumping out of the hole portion 34a of the horizontal portion holding fitting 34. It is also preferable that the height dimension of the spacer 42 and the height dimension of the elastic material 36 (the distance between the upper surface of the upper portion 36a and the lower surface of the lower portion 36b) be set to be approximately the same length, and that the inner height dimension of the horizontal portion holding fitting 34 (the separation width between the upper and lower opposing plate portions 50) be set slightly smaller (shorter) than the height dimensions of the spacer 42 and the elastic material 36. By setting the separation width between the upper and lower opposing plate portions 50 shorter than the height of the spacer 42 and elastic material 36, the horizontal portion holding fitting 34 can be opened slightly in the height direction while the elastic material 36 and spacer 42 are fitted inside the horizontal portion holding fitting 34, thereby preventing the horizontal portion holding fitting 34 from easily coming off the horizontal portion 31 due to the elastic force that causes the upper and lower opposing plate portions 50 of the horizontal portion holding fitting 34 to approach each other (to shrink in the height direction).

[0023] By performing the above-described work of providing the horizontal section holding portion 39 on the ceiling interior material 21 in advance during outworking, the ceiling interior material 21 can be efficiently attached to the body structure. Similar to the horizontal section 31, the vertical section 32 of the ceiling interior material 21 is also provided with a vertical section holding portion (holding portion) 40 configured similarly to the horizontal section holding portion 39 (see FIG. 3). The vertical section holding portion 40 is composed of a vertical section holding metal fitting (holding fixture) 35, an elastic member 36, and a spacer 42. By performing the work of providing the vertical section holding portion 40 on the ceiling interior material 21 in advance during outworking, the ceiling interior material 21 can be efficiently attached to the body structure. The vertical section holding portion 40 (vertical section holding metal fitting 35, elastic member 36, spacer 42) has the same configuration as the horizontal section holding portion 39, and therefore a detailed description thereof will be omitted. Furthermore, instead of the metal horizontal section holding metal fittings 34 and vertical section holding metal fittings 35, holders made of a material other than metal (e.g., resin) may be used.

[0024] In FIG. 1 , a curtain rail (an interior material support portion on one side) 30 is provided on the roof structure 11, and a luggage shelf mounting bracket (an interior material support portion on the other side) 29 is provided on the side structure 12. The luggage shelf mounting bracket 29 is disposed outside the curtain rail 30 in the vehicle width direction (a predetermined direction) and below the curtain rail 30. As described above, the ceiling interior material 21 integrally comprises a horizontal portion (one side edge) 31 on the upper inside side in the vehicle width direction, a vertical portion (the other edge) 32 on the lower outside side in the vehicle width direction, and an arc portion 33 that curves in an arc between the horizontal portion 31 and the vertical portion 32. The horizontal portion 31 is held to the curtain rail 30 via a horizontal portion holder 39, and the vertical portion 32 is held to the luggage shelf mounting bracket 29 via a vertical portion holder 40. An elastic member 36 of a horizontal member holding member 39 is interposed between the horizontal member 31 and the curtain rail 30, and an elastic member 36 of a vertical member holding member 40 is interposed between the vertical member 32 and the luggage shelf mounting bracket 29. The ceiling interior material 21, the curtain rail 30, and the luggage shelf mounting bracket 29 each extend in the vehicle longitudinal direction (second predetermined direction). As shown in FIG. 3 , a plurality of horizontal member holding members 39 (including elastic members 36) are discretely arranged on the horizontal member 31 along the vehicle longitudinal direction, and the horizontal member 31 is elastically supported by the curtain rail 30 at multiple positions in the vehicle longitudinal direction. Furthermore, a plurality of vertical member holding members 40 (including elastic members 36) are discretely arranged on the vertical member 32 along the vehicle longitudinal direction, and the vertical member 32 is elastically supported by the luggage shelf mounting bracket 29 at multiple positions in the vehicle longitudinal direction.

[0025] Next, the structure for attaching the horizontal section 31 (horizontal section holding section 39) to the body structure will be described with reference to Figure 5. The curtain rail 30 is formed from an integral extruded member as part of the roof body structure 11, and has a rail groove section on its lower wall that runs along the longitudinal direction of the vehicle. The horizontal section holding fitting 34 of the horizontal section holding section 39 attached to the horizontal section 31 is attached to the curtain rail 30 with a spacer 42 and a bolt 43 that passes through the hole 34a.

[0026] Because the curtain rail 30 forms part of the roof structure 11, if the dimensional tolerance of the roof structure 11 is large, the position of the curtain rail 30 will also shift, and the distance in the vehicle width direction from the side structure 12 to the curtain rail 30 will deviate from the specified dimension. However, because the ceiling interior material 21 is flexible, by attaching the ceiling interior material 21 while bending it, the mounting hole (hole 34a) of the horizontal section holding part 39 can be aligned with the position of the curtain rail 30. Furthermore, if the ceiling interior material 21 is attached while bending, there is a possibility that the horizontal section 31 will tilt from its completely parallel position with respect to the fastening surfaces (lower surfaces) of the roof structure 11 and the curtain rail 30. However, because the horizontal section holding fitting 34 is fitted into the horizontal section 31 via the elastic material 36, any deviation in the tilt of the horizontal section 31 can be absorbed by the elastic material 36. This allows the upper surface of the horizontal section holding fitting 34 to be kept parallel to the contact surface of the curtain rail 30, and the horizontal section holding fitting 34 can be firmly (rigidly) bolted to the fastening surface of the curtain rail 30.

[0027] Furthermore, since a spacer 42 is inserted inside the horizontal section holding fitting 34, the axial force of the bolt 43 is received by the spacer 42 during the process of tightening the nut 44 onto the bolt 43. This prevents the nut 44 from loosening, and allows the horizontal section holding part 39 to be fixed to the body structure with a predetermined fastening force. Furthermore, when tightening the nut 44, the elastic material 36 is not overly compressed. The bolt head of the bolt 43 is larger than the rail groove of the curtain rail 30, and is inserted and held within the curtain rail 30. At this time, the threaded shank of the bolt 43 protrudes downward from the rail groove. The bolt 43 is inserted from the end of the curtain rail 30 and is movable in the longitudinal direction of the vehicle. After the bolt 43 has been moved to the assembly position, the threaded shank of the bolt 43 is passed through the hole 34a of the horizontal section holding portion 39 engaged with the ceiling interior material 21, and the nut 44 is screwed onto the exposed lower end and tightened, thereby fixing the horizontal section holding portion 39 in a predetermined position on the body structure side.

[0028] As with the horizontal portion 31, the vertical portion 32 of the ceiling interior material 21 is also assembled by fitting the vertical portion holding bracket 35 via the elastic material 36, so that even if the vertical positions of the side structure 12 and the luggage shelf mounting bracket 29 deviate from the specified dimensions, the elastic material 36 can absorb the vertical positional deviation and the deviation in the tilt direction, and the vertical portion 32 can be firmly fixed to the luggage shelf mounting bracket 29.

[0029] As described above, according to this embodiment, because ceiling interior material 21 is flexible, even if the positions of curtain rail 30 and luggage shelf mounting bracket 29 deviate from a predetermined dimension (an allowable range centered on a design reference position), horizontal and vertical positional deviations can be absorbed by flexing ceiling interior material 21. Furthermore, because retaining brackets 34, 35 are fitted to horizontal section 31 and vertical section 32 via elastic material 36, deviations in the tilt direction can also be absorbed by elastic material 36. Furthermore, because spacers 42 are fitted to horizontal section retaining bracket 34 and vertical section retaining bracket 35, horizontal section 31 and vertical section 32 can be firmly bolted to curtain rail 30 and luggage shelf mounting bracket 29.

[0030] Furthermore, as a secondary effect, because the horizontal portion 31 and the vertical portion 32 are supported via the elastic material 36, vibrations from the roof structure 11 and the side structure 12 are less likely to be transmitted to the ceiling interior material 21, which is expected to have the effect of suppressing interior noise caused by vibrations of the ceiling interior material 21. The upper portion 36a and lower portion 36b of the elastic material 36 mainly function as vibration-damping materials that provide flexible support in the out-of-plane direction, and the side portion 36c mainly functions as a vibration-damping material that retains the deflection reaction force of the ceiling interior material 21.

[0031] Furthermore, it is preferable to provide a clearance 52 between the inner peripheral surface of the hole 41 of the horizontal section 31 and the outer peripheral surface of the spacer 42 so that, when the horizontal section retainer 39 is attached to the horizontal section 31, the inner peripheral surface of the hole 41 does not come into contact with the outer peripheral surface of the spacer 42 over substantially the entire circumferential direction. Since the inner peripheral surface of the hole 41 is separated from the outer peripheral surface of the spacer 42 over substantially the entire circumferential direction, when vibrations from the roof structure 11 are transmitted to the spacer 42 via the curtain rail 30 and the retaining bracket 34, the transmission of the vibrations from the spacer 42 to the horizontal section 31 is blocked, thereby suppressing the transmission of vibrations from the roof structure 11 to the ceiling interior material 21. Furthermore, if necessary, an elastic material may be provided between the outer cylindrical surface of the spacer 42 and the inner peripheral surface of the hole 41. The provision of the elastic material more reliably suppresses noise caused by contact between the spacer 42 and the inner peripheral surface of the hole 41. Similarly, for the vertical portion 32, it is preferable to provide a clearance 52 between the inner surface of the hole portion 41 of the vertical portion 32 and the outer surface of the spacer 42 to separate them when the retaining portion is attached, and an elastic material may be interposed between the two if necessary.

[0032] (Second embodiment) The configuration of a retaining bracket in a second embodiment of the present invention is shown in Figures 6 and 7. In this embodiment, the horizontal section retaining bracket 34 and the vertical section retaining bracket 35 are made of a molded member that is continuously extruded in the longitudinal direction of the vehicle. The horizontal section 31 has a plurality of holes 41 arranged in a row along the longitudinal direction of the vehicle. The horizontal section retaining portion 39 has a plurality of spacers 42 (the same number as the holes 41) that are inserted through the plurality of holes 41, and a plurality of elastic members 36 that correspond to each hole 41. The upper and lower opposing plate portions 50 of the horizontal section retaining bracket 34 are each provided with a plurality of holes 34a that communicate with the inner diameter portions of the plurality of spacers 42. The vertical section 32 and the vertical section retaining portion 40 are configured in the same way as the horizontal section 31 and the horizontal section retaining portion 39.

[0033] Since one retaining bracket 34, 35 is provided for multiple holes 41, multiple spacers 42, and multiple elastic members 36, the number of parts can be reduced and the retaining brackets 34, 35 can be more firmly fixed to the body structure. Also, as in the first embodiment, multiple elastic members 36 are fitted into the horizontal section 31 and vertical section 32 by outworking in advance, and then the spacers 42 are attached thereto, and the retaining brackets 34, 35 are fitted in all at once from the outside, thereby integrating the horizontal section retaining portion 39 and the vertical section retaining portion 40 into the ceiling interior material 21 (see FIG. 7). This eliminates the need to assemble the retaining brackets 34, 35 for each elastic member 36.

[0034] Furthermore, because the multiple elastic members 36 are arranged discretely along the vehicle longitudinal direction, it is possible to prevent a decrease in the flexibility of the elastic members 36 due to lengthening, and the flexible elastic members 36 can sufficiently absorb misalignment in the translational direction and misalignment in the inclination of the horizontal portions 31 and vertical portions 32. Meanwhile, because the elastic members 36 are arranged discretely along the vehicle longitudinal direction, gaps 45 exist between the elastic members 36 lined up in the vehicle longitudinal direction. If it is necessary to prevent noise from the roof bodyshell 11 or the side bodyshell 12 from leaking into the vehicle interior through the gaps 45, the noise can be prevented from leaking into the vehicle interior by filling the gaps 45 with a soft gap filler such as a foam sealant or sponge material.

[0035] 8, in the horizontal portion holding fitting 34 of the second embodiment, one of the upper and lower opposing plate portions 50 (the lower one in the illustrated example) and the connecting plate portion 51 may be cut out, leaving only the portion where the elastic material 36 is inserted, and a similar cutout portion may be provided in the vertical portion holding fitting 35. By providing a cutout portion, the weight of the holding fittings 34, 35 can be reduced.

[0036] Also, an elastic member 36 that extends continuously in the longitudinal direction of the vehicle may be used as shown in Fig. 9. The flexibility of the elastic member 36 decreases as the length increases, and it is possible that the effect of absorbing misalignment in the translation direction or misalignment of the horizontal portion 31 and the vertical portion 32 may be reduced compared to when multiple elastic members 36 are provided. However, the effect of the elastic member 36 is not diminished compared to when no elastic member 36 is provided.

[0037] The present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, or to add the configuration of another embodiment to the configuration of one embodiment. Furthermore, it is possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

[0038] For example, in the above embodiment, holding portions (horizontal portion holding portion 39, vertical portion holding portion 40) are provided on both the horizontal portion 31 and the vertical portion 32, but it is also possible to provide a holding portion on only one of them and hold the other on the body structure side by a structure other than the holding portion.

[0039] Furthermore, in the above embodiment, ceiling interior material 21 is used as an example of an interior material, but the interior materials to which the present invention can be applied are not limited to ceiling interior material 21, and can also be applied to interior materials attached to other locations (for example, side interior material 22, etc.). [Explanation of symbols]

[0040] 1...railroad vehicle, 11...roof structure, 12...side structure, 13...floor structure, 14...end structure, 15...window, 16...side door, 17...air conditioning unit, 18...underfloor equipment, 21...ceiling interior material, 22...side interior material, 23...interior floor, 24...seat, 25...luggage shelf, 26...handrail, 27...air conditioning duct, 28...lighting fixture, 29...luggage shelf mounting bracket, 30...curtain rail, 31...horizontal section, 32...vertical section, 33...arc section, 34...horizontal section holding bracket, 35...vertical section holding bracket, 36...elastic material, 37...inclined section, 38...intermediate vertical section, 39...horizontal section holding portion, 40...vertical section holding portion, 41...hole portion, 42...spacer, 43...bolt, 44...nut, 45...gap portion, 50...opposing plate portion, 51...connecting plate portion, 52...clearance

Claims

1. A railway vehicle in which interior materials are provided on a structure constituting a car body, The body structure is provided with an interior material support portion on one side in a predetermined direction and an interior material support portion on the other side in the predetermined direction, the interior material support portion being spaced apart in the predetermined direction, The interior material is a flexible plate-like body, and is integrally provided with an edge portion on one end side that is disposed on one side in the predetermined direction and held by the interior material support portion on the one side, an edge portion on the other end side that is disposed on the other side in the predetermined direction and held by the interior material support portion on the other side, and an arc portion that curves in an arc shape between the edge portion on the one end side and the edge portion on the other end side, an elastic member is interposed between the edge portion and the interior material support portion at least at one of the one end side and the other end side of the interior material; a retaining portion including a retainer, a spacer, and the elastic material is provided on the edge portion on at least one end side of the interior material; The holder has two opposing plate portions spaced apart from each other and facing each other, a spacer insertion hole through which the spacer is inserted is provided in the edge portion on at least one end side; the spacer is inserted and held between the two opposing plate portions of the holder in a state where the spacer is inserted through the spacer insertion hole of the end edge portion, the elastic material is interposed between the two opposing plate portions and the edge portions to elastically support the edge portions, The edge portion on at least one end side is held by the interior material support portion by attaching the holder to the interior material support portion in a holding portion attached state in which the spacer inserted through the spacer insertion hole is held between the two opposing plate portions of the holder and the edge portion is elastically supported by the elastic material. A railway vehicle characterized by:

2. The railway vehicle according to claim 1, the holder has a substantially U-shaped cross section in which a connecting plate portion connects one end edge portions of the two opposing plate portions, and is elastically deformable so as to increase or decrease the separation width of the two opposing plate portions; The spacer is fitted between the two opposing plate portions of the holder and is sandwiched between the two opposing plate portions. A railway vehicle characterized by:

3. The railway vehicle according to claim 1, The spacer has a cylindrical shape, the two opposing plate portions of the holder are each provided with a bolt insertion hole communicating with an inner diameter portion of the spacer held between the two opposing plate portions, The retainer is attached to the interior material support portion by a bolt that passes through the bolt insertion hole and the inner diameter portion of the spacer. A railway vehicle characterized by:

4. The railway vehicle according to claim 1, A clearance is provided between the outer peripheral surface of the spacer and the inner peripheral surface of the spacer insertion hole, separating substantially the entire circumferential area of ​​the inner peripheral surface of the spacer insertion hole from the outer peripheral surface of the spacer when the holding portion is attached. A railway vehicle characterized by:

5. The railway vehicle according to claim 3, The edge portion on at least one end side extends in a second predetermined direction substantially perpendicular to the predetermined direction, a plurality of the spacer insertion holes are arranged in the second predetermined direction in the edge portion on at least one end side, the holding portion includes a plurality of the spacers inserted through the plurality of spacer insertion holes, The two opposing plate portions of the holder are provided with a plurality of bolt insertion holes that communicate with the inner diameter portions of the spacers. A railway vehicle characterized by:

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