JP6853868B2 - Ex-wife structure and vehicle - Google Patents

Description

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

As a new transportation system that is a new means of transportation other than buses and railways, an orbital transportation system that travels on an orbit by traveling 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).

Vehicles with track-based transportation systems are required to be lighter and less costly. Therefore, the vehicle itself may be composed of a plastic material such as fiber reinforced plastic (FRP) instead of a metal material. For example, in the vehicle described in Patent Document 1, the divided blocks are composed of panel-shaped units made of high-hardness FRP material, and are fixed with bolts to form a frontal structure (front wife structure) of the leading vehicle.

Japanese Patent No. 3625779

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

The present invention has been made in order to meet the above demands, and an object of the present invention is to provide an ex-wife structure and a vehicle capable of ensuring strength against a load while using a plastic material.

In order to solve the above problems, the present invention proposes the following means.
The front wife structure in one aspect of the present invention is a front wife structure that constitutes an end portion 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. The front wall is provided with 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 vertical direction of the vehicle. Of the edges surrounding the opening, the width of the side edges of the vehicle on both sides in the width direction and the upper edge of the vehicle in the vertical direction have at least two directions along the outer surface in the fiber direction. It has a multi-axis fiber reinforced plastic material having two directions intersecting with respect to the direction and the vertical direction as fiber directions, and the two intersecting directions form 45 ° with respect to the width direction and the vertical direction .

In the front wife structure in another aspect of the present invention, the two intersecting directions may be 45 ° with respect to the width direction and the vertical direction.

According to such a configuration, a curved surface is formed at the connecting portion connecting the front wall portion and the ceiling wall portion facing in different directions. In the region forming such a curved surface, hoop stress due to the curved surface occurs. Therefore, the rigidity against a load in the vertical direction can be ensured only by the biaxial fiber reinforced plastic material. Therefore, the amount of the core material used can be suppressed, and the cost can be suppressed to manufacture the ex-wife structure.

Further, in the front wife structure in another aspect of the present invention, at least one of the side edge portion and the upper edge portion may have a core material sandwiched between the multiaxial fiber reinforced plastic materials.

According to such a configuration, the flexural 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 running wind is improved by the core material, respectively, as compared with the case of using only the multi-axis fiber reinforced plastic material. Can be done.

Further, in the front wife structure according to another aspect of the present invention, among the edges of the opening, the lower edge portion on the lower side in the vertical direction has a uniaxial fiber reinforced plastic having the width direction as the fiber direction. May be good.

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

Further, in the front end structure in another aspect of the present invention, the lower edge portion may have a core material sandwiched between the uniaxial fiber reinforced plastics.

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

Further, in the front wife structure in another aspect of the present invention, the lower edge portion may have the uniaxial fiber reinforced plastic sandwiched between the multiaxial fiber reinforced plastic materials.

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

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

According to such a configuration, the bending rigidity of the ceiling wall portion with respect to a 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 to form the front wife structure.

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

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

According to the present invention, it is possible to secure the strength against a load while using a plastic material.

It is a perspective view which shows the schematic structure of the vehicle in embodiment which concerns on this invention. It is a perspective view explaining each area of the ex-wife structure in embodiment which concerns on this invention. It is a perspective view which shows the cross section of the upper edge part and the ceiling wall part in embodiment which concerns on this invention, and is the cross section III-III in FIG. FIG. 5 is a perspective view showing a cross section of a first side edge portion and a side wall portion in the embodiment according to the present invention, and is an IV-IV cross section in FIG. FIG. 5 is a perspective view showing a cross section of a lower edge portion and a window lower panel portion in the embodiment according to the present invention, and is an IV-IV cross section in FIG.

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

Here, in the following, the direction in which the vehicle 1 travels is referred to as the front-rear 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. The 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 an external view box-like structure having a cavity inside. The vehicle body 2 is provided with an opening / closing door, a window, or the like (not shown) on the side surface facing Dw in the width direction. The vehicle body 2 is provided with traveling wheels (not shown) that roll on the track and guide wheels (not shown) that guide the vehicle 1 in a target direction along a guide rail.

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

The front wall portion 4 forms a front surface 4b which is an outer surface of the front wife structure 3 facing the front side in the front-rear direction Da. The front wall portion 4 has an edge portion forming an opening 4a that opens toward the front side. The opening 4a is fitted with a transparent member such as glass or reinforced plastic to form a window in front of the vehicle 1. The front wall portion 4 in the present embodiment is a region that can be seen when the front wife structure 3 is viewed from the front side in the front-rear direction Da. The opening 4a has a rectangular shape and is open. As shown in FIG. 2, the front wall portion 4 has an upper edge portion 40, a first side edge portion (side edge portion) 41, and a second side edge portion (side edge portion) as an edge portion surrounding the opening 4a. ) 42 and a lower edge portion 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 multi-axis fiber reinforced plastic material having at least two fiber directions along the outer surface. 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 multi-axis fiber reinforced plastic materials. Here, the core material 300 at the upper edge portion 40 and the multi-axis 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 laminated material 400 sandwiched between multiaxial fiber reinforced plastic materials.

The multi-axis fiber reinforced plastic material of the present embodiment is a sheet-shaped biaxial fiber reinforced plastic material (biaxial FRP) 200. The biaxial fiber reinforced plastic material 200 of the present embodiment has two directions orthogonal to each other along the outer surface 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 in which the biaxial fiber reinforced plastic material 200 is inclined at ± 45 ° with respect to the vertical direction Dv and the width direction Dw, respectively. .. Further, when the biaxial fiber reinforced plastic material 200 is used for the ceiling wall portion 5 described later, the fiber direction is the direction in which the biaxial fiber reinforced plastic material 200 is inclined at ± 45 ° with respect to the width direction Dw and the front-rear direction Da, respectively. Further, when the biaxial fiber reinforced plastic material 200 is used for the side wall portion 6 described later, the fiber direction is a direction in which the biaxial fiber reinforced plastic material 200 is inclined at ± 45 ° with respect to the front-rear direction Da and the vertical direction Dv, respectively.

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

The first laminated material 400 is composed of a core material 300 sandwiched between 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 a sheet-shaped biaxial fiber reinforced plastic material 200 having a thickness different from that of the biaxial fiber reinforced plastic material 200 constituting the first laminated material 400 so as to seal the first laminated material 400. It is composed of laminated with. 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 an outline of the front wife structure 3, the description of the inner upper edge region 40a is omitted.

As shown in FIG. 3, the outer upper edge region 40b is continuous with the inner upper edge region 40a. 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 material 200. In the outer upper edge region 40b, the total 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 the core material 300. It is formed so as 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.

As shown in FIGS. 1 and 2, the first side edge portion 41 is located on one side of the opening 4a in the width direction Dw. One side of the width direction Dw in the present embodiment is the right side (right side of the paper in FIGS. 1 and 2) when the front wife structure 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 4a in the front wall portion 4. The first side edge portion 41 is continuous with the upper edge portion 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 a first laminated material 400.

The first side edge portion 41 is formed by sandwiching and laminating a sheet-shaped 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 has 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 have.

The inner first side edge region 41a is a region of the first side edge portion 41 that directly faces the opening 4a. 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 composed of only the biaxial fiber reinforced plastic material 200, similarly to 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 views showing an outline of the front wife structure 3, the description 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 lateral edge region 41b is located on the right side of the inner first lateral 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, the core material 300 is doubly sandwiched between the biaxial fiber reinforced plastic material 200 as in the outer upper edge region 40b. The outer first lateral edge region 41b is continuous with the outer upper edge region 40b. In the outer first side edge region 41b, the 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 the core material. It is formed so as 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 that of 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.

As shown in FIGS. 1 and 2, the second side edge portion 42 is located on the other side of the opening 4a in the width direction Dw. The other side of the width direction Dw in the present embodiment is the left side (left side of the paper in FIGS. 1 and 2) when the front wife structure 3 is viewed from the front side. The second side edge portion 42 extends in the vertical direction Dv on the left side of the opening 4a in the front wall portion 4. The second side edge portion 42 is continuous with the upper edge portion 40 and is integrally formed. The second side edge portion 42 of the present embodiment has a shape substantially symmetrical with that of the first side edge portion 41 with respect to the opening 4a. That is, the second side edge portion 42 has a cross-sectional shape symmetrical to that of the first side edge portion 41. The second side edge portion 42, like the first side edge portion 41, has a biaxial fiber reinforced plastic material 200 as a multiaxial fiber reinforced plastic material. The second side edge portion 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. It has a region 42b.

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

The uniaxial fiber reinforced plastic material 100 of this embodiment has a sheet shape. The second laminated material 500 is formed 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.
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 being the same material, and may be different materials.

The lower edge portion 43 is formed by sandwiching and laminating a sheet-shaped 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 portion 43 that directly faces the opening 4a. The inner lower edge region 43a is continuous with the inner first side edge region 41a and the inner second side edge region. 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 two uniaxial fiber reinforced plastic materials 100 and two biaxial fiber reinforced plastic materials 200. In the inner lower edge region 43a, the total 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 the thickness of the core material 300. It is formed to be thinner than. 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 The thickness ratio with and is 1: 8: 20: 8: 1.

The outer lower edge region 43b is continuous with the inner lower edge region 43a. The outer lower edge region 43b is located below the inner lower edge region 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 composed of only the biaxial fiber reinforced plastic material 200, similarly to the inner upper edge region 40a. The outer first side edge region 41b is continuous with the outer first side edge region 41b and the outer second side edge region 42b.

Further, the front wall portion 4 has a window lower panel portion 44 as shown in FIG. The window bottom 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 integrally formed with the lower edge portion 43. Both sides of the window bottom panel portion 44 in the width direction Dw are integrally formed with the first side edge portion 41 and the second side edge portion 42, respectively. The window bottom panel portion 44 is formed of a resin material into a plate shape by spray-up molding or hand lay-up molding.

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

As shown in FIG. 1, the ceiling wall portion 5 forms a ceiling surface 5a which is an outer surface facing upward in the vertical direction Dv of the vehicle 1. The ceiling wall portion 5 is continuous with the front wall portion 4. The ceiling surface 5a extends in the width direction Dw and the front-rear direction Da. The ceiling wall portion 5 in the present embodiment is a region that can be seen when the front wife structure 3 is viewed from above in the vertical direction Dv. As shown in FIG. 2, the ceiling wall portion 5 has a core material 300 in which at least a part of the region including the central portion in the width direction Dw is sandwiched between the multi-axis fiber reinforced plastic materials. In the ceiling wall portion 5 of the present embodiment, the core material 300 is arranged in the ceiling region 51 which is a predetermined region including the central portion in the width direction Dw and the 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-shaped 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 thinner 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 constitutes a side surface which is an outer surface facing the outside 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 portion 6 in the present embodiment is a region that can be seen when the front wife structure 3 is viewed from the width direction Dw. The side wall portion 6 is continuous with the front wall portion 4 and the ceiling wall portion 5. The side wall portion 6 extends in the vertical direction Dv and the front-rear direction Da. As shown in FIG. 4, the side wall portion 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.

Further, the connecting portion connecting the regions facing different directions, such as the portion connecting the front wall portion 4 and the ceiling wall portion 5 and the portion connecting the front wall portion 4 and the side wall portion 6, is curved. A surface is formed. The core material 300 is not arranged 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, has an outer upper edge region 40b and a ceiling region 51 as shown in FIGS. 2 and 3. It is an area to connect. The ceiling-side transition region 7 is arranged at a position sandwiched between the outer upper edge region 40b having the core material 300 and the ceiling region 51. The ceiling-side transition region 7 is curved so as to form a convex shape toward the outside. 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 composed of only the biaxial fiber reinforced plastic material 200.

As shown in FIGS. 2 and 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 is the outer first side edge region 41b having the core material 300 and the outer second side. It is continuous with the edge region 42b. The side wall side transition region 8 is continuous with the ceiling side 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 composed of only the biaxial fiber reinforced plastic material 200.

According to the front 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 has a high specific strength with respect to the load in the width direction Dw and the vertical direction Dv along the outer surface of the first side edge portion 41, the second side edge portion 42, and the upper edge portion 40. The material 200 is arranged. As a result, the front wall portion 4 using the biaxial fiber reinforced plastic material 200 can be formed as a frame structure having improved rigidity against loads in the vertical direction Dv and the width direction Dw. As a result, the biaxial fiber reinforced plastic material 200 provides rigidity against shear stress that causes the front wife structure 3 to be deformed from a rectangle to a parallelogram when viewed from the front side, which is received by the crosswind blowing in the width direction Dw. It can be secured in the part 4.

In addition, since the ceiling region 51 has 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 front wife structure 3 is subjected to stress such that the ceiling wall portion 5 is deformed so as to bulge upward due to the upper negative pressure generated by the traveling wind blown from the front side when the vehicle 1 travels. However, in the front wife structure 3 of the present embodiment, the flexural rigidity against this stress can be ensured 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 the flexural rigidity against stress that deforms so as to bulge 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 with respect to 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, respectively, to form the front wife structure 3. As a result, the strength required for the ex-wife structure 3 is secured without thickening the cross-sectional shape by using a large amount of fiber-reinforced plastic as in the case where the ex-wife structure 3 is simply constructed using fiber reinforced plastic (FRP). can do. That is, it is possible to secure the strength against loads from a plurality of directions in the width direction Dw and the vertical direction Dv while using the plastic material.

Further, by laminating the sheet-shaped biaxial fiber reinforced plastic material 200 and the uniaxial fiber reinforced plastic material 100 to form each region, it is possible to easily form the front wife structure 3 with an arbitrary thickness and curvature. Therefore, it is possible to secure the strength while making the ex-wife structure 3 a necessary shape.

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

Further, 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, as compared with the case of using only the biaxial fiber reinforced plastic material 200, the bending rigidity of the first side edge portion 41, the second side edge portion 42, and the upper edge portion 40 with respect to the load from the front side to the rear side due to the running wind is reduced. Each can be improved by the core material 300.

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

In particular, in the present embodiment, the second laminated material 500 is arranged in the inner lower edge region 43a. Therefore, the flexural rigidity of the lower edge portion 43 with respect to the load from the front side to the rear side due to the running 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.

Further, in the present embodiment, the second laminated material 500 is sandwiched between the biaxial fiber reinforced plastic material 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 due to the crosswind can be improved at the lower edge portion 43 as well.

According to the vehicle 1 having the ex-wife structure 3 as described above, it is possible to reduce the weight while suppressing the cost as the vehicle 1 as compared with the case where the vehicle 1 is formed of a metal material while ensuring the strength.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the configurations and combinations thereof in the respective embodiments are examples, and the configurations are added or omitted within the range not deviating from the gist of the present invention. , Replacement, and other changes are possible. Further, the present invention is not limited to the embodiments, but only to the scope of 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, in the side wall side transition region 8 and the ceiling side transition region 7 of the modified example, a sheet-shaped biaxial fiber reinforced plastic material 200 seals the core material 300, similarly to the ceiling region 51 and the upper edge portion 40. It may be configured by sandwiching and laminating so as to do so. At this time, in the side wall side transition region 8 and the ceiling side transition region 7, the thickness of 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 flexural 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, but the ceiling wall portion 5 is not limited to such a configuration, and the ceiling wall portion 5 has a central portion in the width direction Dw. It suffices that at least a part of the region including the core material 300 has the core material 300, and the entire area of the ceiling wall portion 5 may have the core material 300.

Further, the side wall portion 6 of the present embodiment is composed of only the biaxial fiber reinforced plastic material 200, but is not limited to such a configuration. For example, the side wall portion 6 may have the core material 300 in the entire area or a part of the area.

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

Further, the lower edge portion 43 may have a metal material instead of using a plastic material such as the uniaxial fiber reinforced plastic material 100. Since only the lower edge portion 43 is made of a metal material, a structure for attaching a component such as a wiper or a light can be easily formed. As a result, the structure on the lower side of the opening 4a, which requires the most parts to be attached to the front wall portion 4, can be simplified 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 the structure is not limited to this, and the edge portion is not limited to such a structure. Of the portions, at least one of the side edge portion and the upper edge portion may have the core material 300. 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 have at least three or more fiber directions as long as it is a fiber reinforced plastic having two directions intersecting along the outer surface as fiber directions.

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

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

Further, the front wife structure 3 is not limited to a structure that constitutes only the front end portion of the vehicle 1 in the front-rear direction Da as in the present embodiment, but constitutes the front end portion of the vehicle 1 in the front-rear direction Da. Any structure may be used. For example, the front wife structure 3 may form only the rear end portion of the vehicle 1 on the other side of the front-rear direction Da, or may form both end portions of the vehicle 1 in the front-rear direction Da. ..

Further, the opening 4a is not limited to the one having a rectangular shape and opening as in the present embodiment, and may be opened at the front wall portion 4. For example, the opening 4a may be opened in a circular or elliptical shape.

1 ... Vehicle Da ... Front-rear direction Dw ... Width direction Dv ... Vertical direction 2 ... Vehicle body 3 ... Front wife structure 4 ... Front wall part 4a ... Opening 40 ... Upper edge part 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 ... Under-window 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 (8)

It is a former wife structure that constitutes the end of the vehicle in the front-rear direction.
A front wall portion having an edge portion that forms a front surface that faces one side in the front-rear direction and forms an opening that opens toward 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 vertical direction of the vehicle is provided.
The front wall portion
Of the edges surrounding the opening, the side edges on both sides in the width direction of the vehicle and the upper upper edge in the vertical direction have at least two directions along the outer surface as fiber directions, and the width direction and the above. It has a multi-axis fiber reinforced plastic material whose fiber direction is two directions that intersect with each other in the vertical direction .
The two intersecting directions are an ex-wife structure that forms 45 ° with respect to the width direction and the vertical direction. The front wife structure according to claim 1 , wherein the connecting portion connecting the front wall portion and the ceiling wall portion is made of only the multi-axis fiber reinforced plastic material. The forearm structure according to claim 1 or 2 , wherein at least one of the side edge portion and the upper edge portion has a core material sandwiched between the multiaxial fiber reinforced plastic materials. According to any one of claims 1 to 3 , among the edges of the opening, the lower lower edge in the vertical direction has a uniaxial fiber reinforced plastic having the width direction as the fiber direction. The ex-wife structure described. The forearm structure according to claim 4 , wherein the lower edge portion has a core material sandwiched between the uniaxial fiber reinforced plastics. The forearm structure according to claim 5 , wherein the lower edge portion has the uniaxial fiber reinforced plastic sandwiched between the multiaxial fiber reinforced plastic materials. Any one of claims 1 to 6 of the ceiling wall portion, wherein at least a part of the region including the central portion in the width direction has a core material sandwiched between the multiaxial fiber reinforced plastic materials. The ex-wife structure described in the section. The ex-wife structure according to any one of claims 1 to 7.
A vehicle including the ex-wife structure and a fixed vehicle body.

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