JP2020019479A - Front end structure and vehicle - Google Patents

Abstract

To make it possible to secure the strength with respect to loads from a plurality of directions while using a plastic material.SOLUTION: A front end structure constitutes an edge part in a longitudinal direction of a vehicle, forms a front surface facing one side in the longitudinal direction, and includes a front wall part having an edge part which forms an opening part opening toward one side of the longitudinal direction and a ceiling wall part which is continuous to the front wall part and forms a ceiling surface facing upward of the vehicle in a vertical direction. The front wall part has a multiaxial fiber-reinforced plastic material in that side edge parts on both sides in the vehicle width direction and an upper edge part on an upper side in the vertical direction among edge parts surrounding the opening part are at least fiber directions in the two directions along an outer surface and another two fiber directions intersecting with the width direction and the vertical direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ex-wife structure and a vehicle.

  2. Description of the Related Art As a new transportation system which is a new transportation means other than a bus or a railway, a track-based transportation system that travels on a track by running wheels made of rubber tires or the like is known. Such a track-based transportation system is generally called a new transportation system or an APM (Automated People Mover).

  For vehicles of the track-based transportation system, weight reduction and cost reduction are required. Therefore, the vehicle itself may be made of a plastic material such as fiber reinforced plastic (FRP) instead of a metal material. For example, in the vehicle described in Patent Literature 1, a divided block is formed of a panel-shaped unit made of a high-hardness FRP material, and is fixed by bolts to form a frontal structure (fore-wife structure) of a leading vehicle.

Japanese Patent No. 3625779

  By the way, loads are applied to the ex-wife structure from various directions. Specifically, not only the traveling wind generated from the front of the vehicle but also the crosswind blowing in the width direction of the vehicle, the front wife structure receives a load such that the side surface is distorted. Therefore, even when the ex-wife structure is made of a plastic material, it is necessary to secure strength against a load.

  SUMMARY OF THE INVENTION The present invention has been made to meet the above-mentioned demands, and has as its object to provide a front wife structure and a vehicle capable of securing strength against a load while using a plastic material.

In order to solve the above problems, the present invention proposes the following means.
The ex-wife structure according to one aspect of the present invention is an ex-wife structure that constitutes an end in the front-rear direction of the vehicle, forms a front surface facing one side in the front-rear direction, and opens toward one side in the front-rear direction. A front wall portion having an edge portion forming an opening to be formed, and a ceiling wall portion continuous with the front wall portion and forming a ceiling surface facing upward in the up-down direction of the vehicle, The part, of the edges surrounding the opening, the side edges on both sides in the width direction of the vehicle and the upper edge in the upper and lower directions, at least two directions along the outer surface are fiber directions, and the width is And a multiaxial fiber reinforced plastic material having a fiber direction in two directions intersecting the direction and the vertical direction.

  In the ex-wife structure according to another aspect of the present invention, the two intersecting directions may form an angle of 45 ° with the width direction and the vertical direction.

  Further, in the ex-wife structure according to another aspect of the present invention, a connection portion connecting the front wall portion and the ceiling wall portion may be formed only of the multiaxial fiber reinforced plastic material.

  According to such a configuration, a curved surface is formed at a connection portion connecting the front wall portion and the ceiling wall portion facing in different directions. In a region where such a curved surface is formed, a hoop stress is generated by the curved surface. Therefore, the rigidity against the load in the up-down direction can be ensured only by the biaxial fiber reinforced plastic material. Therefore, the amount of the core material used can be reduced, and the ex-wife structure can be manufactured at a reduced cost.

  In another aspect of the present invention, at least one of the side edge and the upper edge may have a core material sandwiched between the multiaxial fiber reinforced plastic materials.

  According to such a configuration, the bending rigidity of the side edge portion and the upper edge portion with respect to the load from the front side to the rear side due to the traveling wind is improved by the core material as compared with the case of using only the multiaxial fiber reinforced plastic material. Can be.

  Further, in the extremity structure according to another aspect of the present invention, among the edges of the opening, the lower edge of the lower side in the vertical direction has a uniaxial fiber reinforced plastic whose fiber direction is the width direction. Is also good.

  According to such a configuration, the rigidity of the front wall portion against the load from the front side to the rear side due to the traveling wind can be improved by the lower edge portion.

  Further, in the extremity structure according to another aspect of the present invention, the lower edge portion may include a core material sandwiched between the uniaxial fiber reinforced plastics.

  According to such a configuration, the bending rigidity of the lower edge portion against the load from the front side to the rear side due to the traveling wind can be improved by the core material as compared with the case of using only the uniaxial fiber reinforced plastic.

  In another aspect of the present invention, the lower edge portion may include the uniaxial fiber reinforced plastic sandwiched by the multiaxial fiber reinforced plastic material.

  According to such a configuration, the rigidity of the front wall portion against the shear stress due to the cross wind can be improved even at the lower edge portion.

  Further, in the ex-wife structure according to another aspect of the present invention, the ceiling wall has at least a part of a region including a central portion in the width direction, a core material sandwiched between the multiaxial fiber reinforced plastic materials. May be.

  According to such a configuration, the bending rigidity of the ceiling wall with respect to the load in the vertical direction can be improved by the core material. Therefore, the function of increasing the rigidity against loads in different directions can be separated into the front wall portion and the ceiling wall portion, respectively, so that the ex-wife structure can be configured.

  Further, a vehicle according to one aspect of the present invention includes the ex-wife structure according to any one of the first to eighth aspects, and a vehicle body fixed to the ex-wife structure.

  According to such a configuration, it is possible to reduce the weight while securing the strength while suppressing the cost as a vehicle.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength with respect to load can be ensured, using a plastic material.

FIG. 1 is a perspective view illustrating a schematic configuration of a vehicle according to an embodiment of the present invention. It is a perspective view explaining each field of the ex-wife structure in the embodiment concerning the present invention. It is a perspective view which shows the cross section of the upper edge part and ceiling wall part in embodiment concerning this invention, and is III-III cross section in FIG. FIG. 4 is a perspective view illustrating a cross section of a first side edge portion and a side wall portion in the embodiment according to the present invention, and is a cross section taken along line IV-IV in FIG. 1. It is a perspective view which shows the cross section of the lower edge part and window lower panel part in embodiment concerning this invention, and is IV-IV cross section in FIG.

Hereinafter, a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
The vehicle 1 of the present invention is a coupled vehicle of a track-based transportation system that travels on a track while being guided by guide rails. The track-based transportation system according to the present embodiment is a side-guide rail-based transportation system in which guide rails extending along the track extending direction are provided on both sides of the vehicle 1 in the width direction Dw. ing. As shown in FIG. 1, the vehicle 1 according to the present embodiment includes a vehicle body 2 and a front wife structure 3.

  Here, the direction in which the vehicle 1 travels is hereinafter referred to as the front-back direction Da. The width direction Dw of the vehicle 1 orthogonal to the front-rear direction Da is simply referred to as the width direction Dw. A direction orthogonal to the front-rear direction Da and the width direction Dw is referred to as a vertical direction Dv.

  The vehicle body 2 has a box-like structure having a hollow inside. The vehicle body 2 is provided with an opening / closing door, a window, and the like (not shown) on a side surface facing the width direction Dw. The vehicle body 2 is provided with running wheels (not shown) that roll on a track running path and guide wheels (not shown) that guide the vehicle 1 in a target direction along guide rails.

  The front wife structure 3 constitutes a front end, which is one side of the vehicle 1 in the front-rear direction Da. The ex-wife structure 3 is mechanically fixed to the vehicle body 2 with bolts or the like. The ex-wife structure 3 of the present embodiment includes a front wall portion 4, a ceiling wall portion 5, and a side wall portion 6. In the ex-wife structure 3, the front wall part 4, the ceiling wall part 5, and the side wall part 6 are integrally formed.

  The front wall portion 4 forms a front surface 4b which is an outer surface facing the front side in the front-rear direction Da of the front wife structure 3. The front wall 4 has an edge forming an opening 4a that opens toward the front side. The opening 4a forms a front window of the vehicle 1 by fitting a transparent member such as glass or reinforced plastic. The front wall portion 4 in the present embodiment is an area that can be seen when the front wife 3 is viewed from the front side in the front-rear direction Da. The opening 4a is open in a rectangular shape. As shown in FIG. 2, the front wall portion 4 includes an upper edge portion 40, a first side edge portion (side edge portion) 41, and a second side edge portion (side edge portion) as edges surrounding the opening 4a. ) 42 and a lower edge 43.

  The upper edge portion 40 is located above the opening 4a in the vertical direction Dv. The upper edge portion 40 extends in the width direction Dw above the opening 4a in the front wall portion 4. The upper edge portion 40 has a polyaxial fiber reinforced plastic material having at least two directions along the outer surface as a fiber direction. Here, the two directions along the outer surface of the upper edge portion 40 of the present embodiment are a direction including a component in the vertical direction Dv along the outer surface and a direction including a component in the width direction Dw along the outer surface. is there. As shown in FIG. 3, the upper edge portion 40 has a core material 300 sandwiched between multiaxial fiber reinforced plastic materials. Here, the core material 300 at the upper edge portion 40 and the multiaxial fiber reinforced plastic material sandwiching the core material 300 are collectively referred to as a first laminated material 400. The upper edge portion 40 has a first laminate 400 sandwiched between multiaxial fiber reinforced plastic materials.

  The multiaxial fiber reinforced plastic material of the present embodiment is a sheet-shaped biaxial fiber reinforced plastic material (biaxial FRP) 200. In the biaxial fiber reinforced plastic material 200 of the present embodiment, two directions orthogonal to each other along the outer surface are defined as fiber directions. Therefore, when the biaxial fiber reinforced plastic material 200 of the present embodiment is used for the front wall portion 4, the fiber direction is the direction inclined at ± 45 ° with respect to the vertical direction Dv and the width direction Dw. . Further, when the biaxial fiber reinforced plastic material 200 is used for the ceiling wall 5 described later, the directions inclining at ± 45 ° with respect to the width direction Dw and the front-back direction Da are defined as fiber directions. Further, when the biaxial fiber reinforced plastic material 200 is used for the side wall portion 6 described later, a direction inclining by ± 45 ° with respect to the front-rear direction Da and the vertical direction Dv is defined as a fiber direction.

  The core material 300 is a known core material such as a balsa material or a foamable resin material. The core material 300 improves bending rigidity against a load in a direction orthogonal to the outer surface. Therefore, when the core member 300 of the present embodiment is used for the front wall portion 4, the bending rigidity in the front-rear direction Da is improved. Further, when the core material 300 is used for a ceiling wall portion 5 described later, the bending rigidity in the vertical direction Dv is improved. In addition, if the core material 300 is used for a sidewall portion 6 described later, the bending rigidity in the width direction Dw is improved. The core material 300 of the present embodiment is a highly flame-retardant, highly foamable resin material that is difficult to burn, like the biaxial fiber reinforced plastic material 200.

  The first laminated material 400 is configured by sandwiching the core material 300 between the sheet-shaped biaxial fiber reinforced plastic materials 200. The first laminated material 400 has a frame shape.

  The upper edge portion 40 is sandwiched by the sheet-shaped biaxial fiber reinforced plastic material 200 having a different thickness from the biaxial fiber reinforced plastic material 200 constituting the first laminated material 400 so as to seal the first laminated material 400. It is configured by being laminated. Specifically, the upper edge portion 40 of the present embodiment has an inner upper edge region 40a facing the opening 4a and an outer upper edge region 40b outside the inner upper edge region 40a.

  The inner upper edge region 40a is a region of the upper edge portion 40 that directly faces the opening 4a. The inner upper edge region 40a is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the inner upper edge region 40a is composed of only the biaxial fiber reinforced plastic material 200. Since FIGS. 1 and 2 are schematic views showing the outline of the ex-wife structure 3, the description of the inner upper edge region 40a is omitted.

  The outer upper edge area 40b is continuous with the inner upper edge area 40a as shown in FIG. The outer upper edge region 40b is located above the inner upper edge region 40a. In the outer upper edge region 40b, the biaxial fiber reinforced plastic material 200 and the first laminated material 400 are laminated in the order of the biaxial fiber reinforced plastic material 200, the first laminated material 400, and the biaxial fiber reinforced plastic material 200. . That is, in the outer upper edge region 40b, the core material 300 is doubly sandwiched between the biaxial fiber reinforced plastic materials 200. In the outer upper edge region 40b, the combined thickness of the biaxial fiber reinforced plastic material 200 sandwiching the first laminated material 400 and the biaxial fiber reinforced plastic material 200 in the first laminated material 400 is equal to the thickness of the core material 300. It is formed to be thinner than the thickness. For example, in the outer upper edge region 40b of the present embodiment, the thickness ratio of the biaxial fiber reinforced plastic material 200, the core material 300, and the biaxial fiber reinforced plastic material 200 is 1: 6: 1.

  The first side edge portion 41 is located on one side in the width direction Dw with respect to the opening 4a, as shown in FIGS. The one side in the width direction Dw in the present embodiment is the right side (the right side in FIG. 1 and FIG. 2 in FIG. 1 and FIG. 2) when the front wife 3 is viewed from the front side. The first side edge portion 41 extends in the vertical direction Dv on the right side of the opening 4 a in the front wall portion 4. The first side edge 41 is continuous with the upper edge 40 and is integrally formed. As shown in FIG. 4, the first side edge portion 41 has a biaxial fiber reinforced plastic material 200 as a multiaxial fiber reinforced plastic material. The first side edge portion 41 of the present embodiment has the first laminated material 400.

  The first side edge portion 41 is configured by sandwiching and laminating a sheet-like biaxial fiber reinforced plastic material 200 so as to seal the first laminated material 400. Specifically, the first side edge portion 41 of the present embodiment includes an inner first side edge region 41a facing the opening 4a and an outer first side edge region 41b outside the inner first side edge region 41a. And

  The inner first side edge region 41a is a region directly facing the opening 4a in the first side edge portion 41. The inner first side edge region 41a is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the inner first side edge region 41a is made of only the biaxial fiber reinforced plastic material 200, like the inner upper edge region 40a. The inner first side edge region 41a is continuous with the inner upper edge region 40a. Since FIGS. 1 and 2 are schematic diagrams showing the outline of the ex-wife structure 3, the illustration of the inner first side edge region 41a is omitted.

  As shown in FIG. 4, the outer first side edge region 41b is continuous with the inner first side edge region 41a. The outer first side edge region 41b is located on the right side of the inner first side edge region 41a. In the outer first side edge region 41b, the biaxial fiber reinforced plastic material 200 and the first laminated material 400 are laminated in the order of the biaxial fiber reinforced plastic material 200, the first laminated material 400, and the biaxial fiber reinforced plastic material 200. ing. That is, in the outer first side edge region 41b, similarly to the outer upper edge region 40b, the core material 300 is doubly sandwiched between the biaxial fiber reinforced plastic materials 200. The outer first side edge region 41b is continuous with the outer upper edge region 40b. In the outer first side edge region 41b, the combined thickness of the biaxial fiber reinforced plastic material 200 sandwiching the first laminated material 400 and the biaxial fiber reinforced plastic material 200 in the first laminated material 400 is equal to the core material. It is formed to be thinner than the thickness of 300. In the outer first side edge region 41b of the present embodiment, the thickness of the core material 300 is formed to be thicker than the outer upper edge region 40b. For example, in the outer first side edge region 41b, the thickness ratio of the biaxial fiber reinforced plastic material 200, the core material 300, and the biaxial fiber reinforced plastic material 200 is 1: 8: 1.

  The second side edge 42 is located on the other side in the width direction Dw with respect to the opening 4a, as shown in FIGS. The other side in the width direction Dw in the present embodiment is the left side (the left side in FIG. 1 and FIG. 2) when the front wife 3 is viewed from the front side. The second side edge 42 extends in the vertical direction Dv on the left side of the opening 4 a in the front wall 4. The second side edge 42 is continuous with the upper edge 40 and is integrally formed. The second side edge portion 42 of the present embodiment has a shape substantially symmetric with the first side edge portion 41 with respect to the opening 4a. That is, the second side edge 42 has a symmetrical cross-sectional shape with the first side edge 41. Like the first side edge 41, the second side edge 42 has a biaxial fiber reinforced plastic material 200 as a multiaxial fiber reinforced plastic material. The second side edge 42 of the present embodiment has the first laminated material 400. Specifically, the second side edge portion 42 has an inner second side edge region having the same shape as the inner first side edge region 41a, and an outer second side edge having the same shape as the outer first side edge region 41b. And an area 42b.

  The lower edge 43 is located below the opening 4a in the vertical direction Dv. The lower edge 43 extends in the width direction Dw below the opening 4 a in the front wall 4. The lower edge 43 is continuous with the first side edge 41 and the second side edge 42 and is formed integrally. As shown in FIG. 5, the lower edge portion 43 has a uniaxial fiber reinforced plastic material 100 whose fiber direction is one direction along the outer surface. The one direction along the outer surface in the present embodiment is a direction including a component in the width direction Dw along the outer surface. The lower edge 43 of the present embodiment has a core material 300 sandwiched between uniaxial fiber reinforced plastic materials 100. Here, the core material 300 at the lower edge 43 and the uniaxial fiber reinforced plastic material 100 sandwiching the core material 300 are collectively referred to as a second laminated material 500. The lower edge 43 has a uniaxial fiber reinforced plastic material 100 sandwiched between multiaxial fiber reinforced plastic materials. Specifically, the lower edge portion 43 has the second laminated material 500 sandwiched between the biaxial fiber reinforced plastic materials 200.

The uniaxial fiber reinforced plastic material 100 of the present embodiment has a sheet shape. The second laminated material 500 is configured by sandwiching the core material 300 between two uniaxial fiber reinforced plastic materials 100. The core material 300 of the second laminated material 500 of the present embodiment is the same material as the core material 300 of the first laminated material 400. The second laminated material 500 has a beam shape extending in the width direction Dw by the uniaxial fiber reinforced plastic material 100 and the core material 300 having the same width.
Note that the core material 300 of the second laminated material 500 and the core material 300 of the first laminated material 400 are not limited to the same material, but may be different materials.

  The lower edge 43 is formed by sandwiching and laminating a sheet-like biaxial fiber reinforced plastic material 200 so as to seal the second laminated material 500. Specifically, the lower edge portion 43 of the present embodiment has an inner lower edge region 43a facing the opening 4a and an outer lower edge region 43b outside the inner lower edge region 43a.

  The inner lower edge region 43a is a region of the lower edge 43 directly facing the opening 4a. The inner lower edge area 43a is continuous with the inner first side edge area 41a and the inner second side edge area. In the inner lower edge region 43a, the biaxial fiber reinforced plastic material 200 and the second laminated material 500 are laminated in the order of the biaxial fiber reinforced plastic material 200, the second laminated material 500, and the biaxial fiber reinforced plastic material 200. . That is, in the inner lower edge region 43a, the core material 300 is sandwiched between the two uniaxial fiber reinforced plastic materials 100 and the two biaxial fiber reinforced plastic materials 200. In the inner lower edge region 43a, the combined thickness of the biaxial fiber reinforced plastic material 200 sandwiching the second laminated material 500 and the uniaxial fiber reinforced plastic material 100 in the second laminated material 500 is equal to the thickness of the core material 300. It is formed so as to be thinner. For example, in the inner lower edge region 43a of the present embodiment, the biaxial fiber reinforced plastic material 200, the uniaxial fiber reinforced plastic material 100, the core material 300, the uniaxial fiber reinforced plastic material 100, and the biaxial fiber reinforced plastic material 200 Is 1: 8: 20: 8: 1.

  The outer lower edge area 43b is continuous with the inner lower edge area 43a. The outer lower edge area 43b is located below the inner lower edge area 43a. The outer lower edge region 43b is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the outer first side edge region 41b is made of only the biaxial fiber reinforced plastic material 200, like the inner upper edge region 40a. The outer first side edge area 41b is continuous with the outer first side edge area 41b and the outer second side edge area 42b.

  The front wall portion 4 has a window lower panel portion 44 as shown in FIG. The window lower panel portion 44 is located below the opening 4a in the vertical direction Dv. The window lower panel portion 44 is provided below the lower edge portion 43. The window lower panel portion 44 is formed integrally with the lower edge portion 43. The window lower panel portion 44 is formed integrally with the first side edge portion 41 and the second side edge portion 42 on both sides in the width direction Dw. The window lower panel portion 44 is formed in a plate shape from a resin material by spray-up molding or hand lay-up molding.

  The window lower panel portion 44 may be formed integrally with the lower edge portion 43, the first side edge portion 41, and the second side edge portion 42 by a biaxial fiber reinforced plastic material 200, or may be formed as a separate member. It may be joined or adhered to the edge 43, the first side edge 41, or the second side edge 42.

  As shown in FIG. 1, the ceiling wall 5 forms a ceiling surface 5 a that is an outer surface facing upward in the vertical direction Dv of the vehicle 1. The ceiling wall 5 is continuous with the front wall 4. The ceiling surface 5a extends in the width direction Dw and the front-back direction Da. The ceiling wall 5 in the present embodiment is an area that can be seen when the ex-wife structure 3 is viewed from above in the vertical direction Dv. As shown in FIG. 2, at least a part of the ceiling wall portion 5 including the central portion in the width direction Dw has a core material 300 sandwiched between multiaxial fiber reinforced plastic materials. In the ceiling wall portion 5 of the present embodiment, the core material 300 is arranged in a ceiling region 51 which is a predetermined region including a central portion in the width direction Dw and a central portion in the front-rear direction Da. As shown in FIG. 3, the ceiling region 51 is configured by sandwiching and laminating a sheet-like biaxial fiber reinforced plastic material 200 so as to seal the core material 300. In the ceiling region 51, the biaxial fiber reinforced plastic material 200 and the core material 300 are laminated in the order of the biaxial fiber reinforced plastic material 200, the core material 300, and the biaxial fiber reinforced plastic material 200. In the ceiling region 51, the thickness of the biaxial fiber reinforced plastic material 200 sandwiching the core material 300 is formed to be smaller than the thickness of the core material 300. For example, in the ceiling region 51 of the present embodiment, the thickness ratio of the biaxial fiber reinforced plastic material 200, the core material 300, and the biaxial fiber reinforced plastic material 200 is 1: 8: 1.

  As shown in FIGS. 1 and 2, the side wall portion 6 forms a side surface that is an outer surface facing outward in the width direction Dw of the vehicle 1. The side wall portions 6 are provided on both sides in the width direction Dw. The side wall 6 in the present embodiment is an area that can be seen when the ex-wife structure 3 is viewed from the width direction Dw. The side wall 6 is continuous with the front wall 4 and the ceiling wall 5. The side wall 6 extends in the up-down direction Dv and the front-back direction Da. As shown in FIG. 4, the side wall 6 is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the side wall portion 6 of the present embodiment is composed of only the biaxial fiber reinforced plastic material 200.

  Also, a curved portion is formed at a connection portion connecting regions facing in different directions such as a portion where the front wall portion 4 and the ceiling wall portion 5 are connected and a portion where the front wall portion 4 and the side wall portion 6 are connected. A surface is formed. The core material 300 is not disposed in such a curved portion.

  Specifically, the ceiling-side transition region 7, which is a portion where the front wall portion 4 and the ceiling wall portion 5 are connected, includes an outer upper edge region 40b and a ceiling region 51, as shown in FIGS. It is an area to connect. The ceiling-side transition region 7 is arranged at a position sandwiched between the outer upper edge region 40 b having the core material 300 and the ceiling region 51. The ceiling-side transition region 7 is curved so as to project outward. The ceiling side transition region 7 is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the ceiling-side transition region 7 of the present embodiment is formed only of the biaxial fiber reinforced plastic material 200.

  As shown in FIG. 2 and FIG. 4, the side wall-side transition region 8, which is a portion where the front wall portion 4 and the side wall portion 6 are connected, has the outer first side edge region 41 b having the core material 300 and the outer second side region. Each is continuous with the edge region 42b. The side wall transition region 8 is continuous with the ceiling transition region 7. The side wall side transition region 8 is formed by laminating two biaxial fiber reinforced plastic materials 200. That is, the side wall-side transition region 8 of the present embodiment is formed only of the biaxial fiber reinforced plastic material 200.

  According to the ex-wife structure 3 as described above, the upper edge portion 40, the first side edge portion 41, and the second side edge portion 42 have the biaxial fiber reinforced plastic material 200. Therefore, the biaxial fiber reinforced plastic is in a state in which the specific strength with respect to the load in the width direction Dw and the vertical direction Dv, which are directions along the outer surfaces of the first side edge 41, the second side edge 42, and the upper edge 40, is high. Material 200 is arranged. Thereby, the front wall portion 4 using the biaxial fiber reinforced plastic material 200 can be formed as a frame structure with improved rigidity against loads in the vertical direction Dv and the width direction Dw. As a result, the biaxial fiber reinforced plastic material 200 increases the rigidity against shear stress such that the front wife structure 3 is deformed from a rectangular shape to a parallelogram as viewed from the front side by the front wife surface structure 3 due to the cross wind blowing in the width direction Dw. It can be secured in the unit 4.

  In addition, since the ceiling region 51 includes the first laminated material 400, the bending rigidity of the ceiling wall portion 5 with respect to the load in the vertical direction Dv can be improved by the core material 300. The ex-wife structure 3 is subjected to stress such that the ceiling wall portion 5 is deformed so as to expand upward due to an upper negative pressure generated by a traveling wind blowing from the front side when the vehicle 1 travels. However, in the ex-wife structure 3 of the present embodiment, bending rigidity against this stress can be secured in the ceiling wall portion 5 by the core material 300. In particular, when the ceiling surface is flat, as in the ceiling region 51 of the present embodiment, the core material 300 can effectively secure bending rigidity against a stress that deforms so as to expand upward. .

  Therefore, the rigidity of the upper edge portion 40, the first side edge portion 41, the second side edge portion 42, and the ceiling wall portion 5 against loads in different directions can be improved. That is, the function of increasing the rigidity can be separated into the front wall portion 4 and the ceiling wall portion 5 to configure the front wife structure 3. As a result, the necessary strength of the fore-end structure 3 is ensured without using a large amount of fiber-reinforced plastic and thickening the cross-section as in the case where the fore-end structure 3 is simply made of fiber-reinforced plastic (FRP). can do. That is, while using the plastic material, it is possible to secure the strength against loads from a plurality of directions in the width direction Dw and the vertical direction Dv.

  In addition, by laminating the sheet-like biaxial fiber reinforced plastic material 200 or the uniaxial fiber reinforced plastic material 100 to form each region, the extremity structure 3 can be easily formed with an arbitrary thickness and curvature. For this reason, the strength can be ensured while the ex-wife structure 3 has a required shape.

  In a region forming a curved surface such as the ceiling-side transition region 7, a hoop stress is generated by the curved surface. Therefore, the rigidity against a load in the vertical direction Dv can be ensured only by the biaxial fiber reinforced plastic material 200 without using the core material 300 as in the ceiling region 51. Therefore, it is possible to reduce the amount of the core member 300 used, and to manufacture the ex-wife structure 3 at a reduced cost.

  The inner upper edge region 40a, the inner first side edge region 41a, and the inner second side edge region 42a have the first laminated material 400. Therefore, compared with the case of only the biaxial fiber reinforced plastic material 200, the bending rigidity of the first side edge 41, the second side edge 42, and the upper edge 40 against the load from the front side to the rear side due to the traveling wind is reduced. Each can be improved by the core material 300.

  Further, a uniaxial fiber reinforced plastic material 100 having high resistance in the width direction Dw is arranged in the inner lower edge region 43a. Therefore, the rigidity of the front wall portion 4 against the load from the front side to the rear side due to the traveling wind can be improved by the lower edge portion 43.

  In particular, in the present embodiment, the second laminated material 500 is disposed in the inner lower edge region 43a. Therefore, the bending rigidity of the lower edge portion 43 against the load from the front side to the rear side due to the traveling wind can be improved by the core material 300 as compared with the case where only the uniaxial fiber reinforced plastic material 100 is used.

  In the present embodiment, the second laminated material 500 is sandwiched between the biaxial fiber reinforced plastic materials 200 in the inner lower edge region 43a. By using the biaxial fiber reinforced plastic material 200, the rigidity of the front wall portion 4 against the shear stress caused by the cross wind can be improved even at the lower edge portion 43.

  According to the vehicle 1 having the ex-wife structure 3 as described above, the weight of the vehicle 1 can be reduced while the cost as the vehicle 1 is suppressed, as compared with the case where the vehicle 1 is formed of a metal material, while ensuring strength.

  As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, each configuration in each embodiment and a combination thereof are merely examples, and addition and omission of configurations are not deviated from the scope of the present invention. , Substitutions, and other changes are possible. The present invention is not limited by the embodiments, but is limited only by the claims.

  For example, as a modification of the present embodiment, the side wall side transition region 8 and the ceiling side transition region 7 may have the core material 300. Specifically, the side wall-side transition region 8 and the ceiling-side transition region 7 of the modified example have the sheet-like biaxial fiber-reinforced plastic material 200 sealing the core material 300, similarly to the ceiling region 51 and the upper edge portion 40. It may be constituted by being sandwiched and laminated so as to perform. At this time, in the side wall side transition region 8 and the ceiling side transition region 7, the biaxial fiber reinforced plastic material 200 sandwiching the core material 300 may be formed to be thinner than the thickness of the core material 300. preferable. With such a configuration, the bending rigidity is improved, and the strength of the ex-wife structure 3 can be further improved.

  Further, in the ceiling wall portion 5 of the present embodiment, the core material 300 is provided only in the ceiling region 51. However, the present invention is not limited to such a configuration. The ceiling wall portion 5 has a central portion in the width direction Dw. It is sufficient that at least a part of the area including the core material 300 has the core material 300, and the entire area of the ceiling wall 5 may have the core material 300.

  Further, although the side wall portion 6 of the present embodiment is constituted only by the biaxial fiber reinforced plastic material 200, the present invention is not limited to such a constitution. For example, the side wall part 6 may have the core material 300 in the whole area or a part of the area.

  The lower edge 43 of the present embodiment has the second laminated material 500 sandwiched between the biaxial fiber reinforced plastic materials 200, but is not limited to such a configuration. For example, the lower edge portion 43 may have a configuration having only the second laminated material 500 or a configuration having only the uniaxial fiber reinforced plastic material 100 as long as required rigidity can be secured. With such a configuration, the lower edge 43 can be further reduced in weight.

  Further, the lower edge portion 43 may have a metal material instead of using a plastic material like the uniaxial fiber reinforced plastic material 100. Since only the lower edge 43 is made of a metal material, a structure for attaching parts such as a wiper and a light can be easily formed. This makes it possible to simplify the structure of the front wall 4 below the opening 4a where the most components need to be attached, as compared with the case where a plastic material is used.

  Further, in the present embodiment, the upper edge portion 40, the first side edge portion 41, and the second side edge portion 42 have the core material 300, but are not limited to such a structure. It is sufficient that at least one of the side edge portion and the upper edge portion has the core material 300 among the portions. Therefore, only the upper edge portion 40 may have the core material 300, and only the first side edge portion 41 and the second side edge portion 42 may have the core material 300.

  Further, in the present embodiment, the biaxial fiber reinforced plastic material 200 is used as the multiaxial fiber reinforced plastic material, but the present invention is not limited to this. The multiaxial fiber reinforced plastic material may be a fiber direction in three or more directions as long as the fiber direction is at least two directions intersecting along the outer surface.

  Further, the multiaxial fiber reinforced plastic material is not limited to a material in which two directions orthogonal to each other along the outer surface are fiber directions as in the biaxial fiber reinforced plastic material 200 of the present embodiment. Therefore, in the multiaxial fiber reinforced plastic material, two directions or three directions obliquely may be set as the fiber directions as long as a plurality of directions intersecting along the outer surface are set as the fiber directions.

  Further, the vehicle 1 is not limited to a vehicle of a track-based transportation system for a new transportation system, but may be a vehicle for a railway.

  Further, the ex-wife structure 3 is not limited to a structure that forms only the front end of the vehicle 1 in the front-rear direction Da as in the present embodiment, but forms a front end of the vehicle 1 in the front-rear direction Da. Any structure can be used. For example, the front wife structure 3 may constitute only the rear end which is the other side of the vehicle 1 in the front-back direction Da, or may constitute both end portions of the vehicle 1 in the front-back direction Da. .

  Further, the opening 4a is not limited to a rectangular opening as in the present embodiment, but may be any opening as long as it is opened in the front wall 4. For example, the opening 4a may have a circular or elliptical shape.

DESCRIPTION OF SYMBOLS 1 ... Vehicle Da ... Front-back direction Dw ... Width direction Dv ... Vertical direction 2 ... Vehicle main body 3 ... Front wife structure 4 ... Front wall 4a ... Opening 40 ... Upper edge 40a ... Inner upper edge area 40b ... Outer upper edge area 41 ... first side edge 41a ... inner first side edge area 41b ... outer first side edge area 42 ... second side edge 42a ... inner second side edge area 42b ... outer second side edge area 43 ... lower edge 43a ... inner lower edge area 43b ... outer lower edge area 44 ... window lower panel part 5 ... ceiling wall part 51 ... ceiling area 6 ... side wall part 7 ... ceiling side transition area 8 ... side wall side transition area 100 ... uniaxial fiber reinforced plastic material 200: biaxial fiber reinforced plastic material 300: core material 400: first laminated material 500: second laminated material

Claims (9)

The ex-wife structure that constitutes the longitudinal end of the vehicle,
A front wall having an edge forming an opening that opens toward one side in the front-rear direction, forming a front surface facing one side in the front-rear direction;
A ceiling wall portion that is continuous with the front wall portion and forms a ceiling surface that faces upward in the up-down direction of the vehicle,
The front wall portion,
Among the edges surrounding the opening, the side edges on both sides in the width direction of the vehicle and the upper edge on the upper side in the vertical direction have at least two directions along the outer surface as the fiber direction, the width direction and the width direction and An extremity structure having a multiaxial fiber reinforced plastic material having a fiber direction in two directions intersecting the vertical direction.   2. The ex-wife structure according to claim 1, wherein the two intersecting directions form an angle of 45 ° with the width direction and the up-down direction. 3.   3. The extremity structure according to claim 1, wherein a connection portion that connects the front wall portion and the ceiling wall portion is formed only of the multiaxial fiber reinforced plastic material. 4.   4. The extremity structure according to claim 1, wherein at least one of the side edge portion and the upper edge portion has a core material sandwiched between the polyaxial fiber reinforced plastic materials. 5.   5. The edge of the opening, wherein the lower edge of the lower side in the vertical direction has a uniaxial fiber reinforced plastic whose fiber direction is the width direction. 6. The ex-wife structure described.   The extremity structure according to claim 5, wherein the lower edge portion has a core material sandwiched between the uniaxial fiber reinforced plastics.   7. The extremity structure according to claim 6, wherein the lower edge portion includes the uniaxial fiber reinforced plastic sandwiched between the multiaxial fiber reinforced plastic materials. 8.   8. The ceiling wall portion according to claim 1, wherein at least a part of the region including the central portion in the width direction has a core material sandwiched between the polyaxial fiber reinforced plastic materials. Ex-wife structure described in item. An ex-wife structure according to any one of claims 1 to 8,
A vehicle comprising the ex-wife structure and a vehicle body fixed thereto.

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