Vehicular front section structure

Abstract

To provide a vehicular front section structure capable of enhancing a rigidity by a simple structure.SOLUTION: A front section structure 22 which is integrally molded by injection molding, is formed of fiber reinforced resin, and forms a part of the front section of a vehicular body includes a main body portion 23. This main body portion includes: a pair of side portions 24A and 24B provided so as to have a clearance therebetween in the vehicle widthwise direction, and extending in a vertical direction Z; an upper portion 25 which extends in the vehicle widthwise direction W, and which couples the respective upper ends of the pair of side portions 24A and 24B with each other; and a pair of stay portions 26A and 26B which extend in a direction intersecting both the vehicle widthwise direction W and the vertical direction Z from the respective lower ends of the pair of side portions 24A and 24B, and which are connected to the upper portion 25. The respective lower ends 26b of the pair of stay portions 26A and 26B form a part of an outer periphery 22a of the front section structure 22. Protrusions 33 are provided at respective portions 24A, 24B, 25, 26A and 26B of the main body portion 23 so as to extend in respective directions in which respective portions extend.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a front structure of a vehicle. [Background technology]

[0002] Patent Document 1 describes a vehicle body front structure, a so-called radiator support, that is disposed in front of a radiator to support the radiator. This vehicle body front structure has an upper section that extends in the vehicle width direction and a lower section that also extends in the vehicle width direction below the upper section. A pair of side sections that extend in the vertical direction of the vehicle body are connected to both ends of the upper section and the lower section in the vehicle width direction.

[0003] The upper section is provided with, for example, a hood locking structure for opening and closing the engine compartment of the vehicle. Radiators are attached to a pair of sides.

[0004] The front body structure also has a center stay that extends in the vertical direction and connects the upper and lower sections, and a pair of side stays that extend in a direction intersecting both the vehicle width direction and the vertical direction and connect the upper and side sections.

[0005] The front body structure is molded as a single unit from fiber-reinforced resin, ensuring the strength required for the radiator support. With this vehicle front body structure, the center stay and the pair of side stays increase the strength of the vehicle front body structure, particularly the upper part, in the vertical direction, which gives the vehicle front body structure the strength to withstand a strong load acting in the vertical direction when, for example, closing the hood. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2012 / 153601 Summary of the Invention [Problem to be solved by the invention]

[0007] However, such a front structure has the problem of being complicated in structure due to the inclusion of the center stay and side stays, so it is desired to increase the strength of the front structure with a simple structure. [Means for solving the problem]

[0008] Various aspects of the vehicle front structure for solving the above problems will be described. [Mode 1] A front structure made of fiber-reinforced resin that is integrally molded by injection molding and forms part of the front of a vehicle body, wherein when the width direction and vertical direction of the vehicle are defined as the vehicle width direction and the vertical direction, and the upper and lower sides in the vertical direction are simply defined as the upper and lower sides, the front structure comprises a main body portion that is spaced apart in the vehicle width direction and has: a pair of side portions that extend in the vertical direction; an upper portion that extends in the vehicle width direction and connects the upper ends of the pair of side portions; and a pair of stay portions that extend from the lower ends of each of the pair of side portions in a direction intersecting both the vehicle width direction and the vertical direction and are connected to the upper portion, wherein the lower edges of the pair of stay portions form part of the outer peripheral edge of the front structure, and at least one portion of the side portions, the upper portion, and the stay portions is provided with an uneven portion that extends along the extension direction of the portion.

[0009] When the front structure is integrally molded by injection molding, a fountain flow phenomenon occurs at the front end of the molten resin flowing inside the mold cavity, where the molten resin bubbles up and flows toward the molding surface of the mold. As a result, the fibers in the molten resin move along the surface of the front end and flow toward the molding surface of the mold. As a result, the fibers in the skin layer on the molding surface side, which is formed by cooling and solidifying earlier than the central portion (core layer) of the molten resin filled in the cavity, tend to be oriented in the direction of flow. Since fiber-reinforced resin has increased strength in the direction in which the fibers are oriented, the skin layer increases the strength of the front structure.

[0010] According to the above configuration, the surface area of ​​the main body of the front structure is increased by the uneven portion, which increases the area of ​​the skin layer, thereby further increasing the strength of the front structure.

[0011] Furthermore, with the above configuration, the lower edges of the pair of stays form part of the outer peripheral edge of the front structure. In other words, the front structure does not have the lower portion described in Patent Document 1 that connects the lower ends of the pair of side portions and extends in the vehicle width direction. Even in this case, if the main body portion is provided with an uneven portion, the strength of the front structure is increased by the above-mentioned action, and sufficient strength is obtained as a component that forms part of the front part of the vehicle body.

[0012] Therefore, the strength can be increased with a simple configuration. [Aspect 2] A front structure of a vehicle as described in [Aspect 1], wherein the uneven portion is provided continuously throughout the pair of side portions, the upper portion, and the pair of stay portions.

[0013] According to the above-described configuration, the area of ​​the skin layer can be increased over the entire body portion, thereby further increasing the strength of the front structure. [Aspect 3] When the fore-and-aft direction of the vehicle is defined as the fore-and-aft direction and the front and rear sides in the fore-and-aft direction are simply defined as the front and rear sides, the main body portion has a pair of side wall portions extending in the fore-and-aft direction and spaced apart from each other, and a bottom wall portion connecting the rear ends of the pair of side wall portions, the uneven portion is a protrusion portion provided on the bottom wall portion and protruding toward the front side, and a groove portion extending along the protrusion portion and opening to the rear side is provided on the rear surface of the bottom wall portion, a front structure of a vehicle described in [Aspect 1] or [Aspect 2].

[0014] According to the above configuration, the size of the front structure in the front-to-rear direction can be made smaller than when the uneven portion is a protrusion that protrudes rearward from the bottom wall portion of the main body portion. [Aspect 4] A front structure of a vehicle described in [Aspect 3], in which a regulating portion is provided on the rear surface of the bottom wall portion, extending in a direction intersecting the extension direction of the groove portion and facing the bottom surface of the groove portion.

[0015] With the above configuration, the groove can accommodate a portion of an elongated member, such as a wire harness, a washer hose, or a hood lock wire, that is routed in the front of the vehicle. Furthermore, since the elongated member is surrounded by the resin groove, protective materials such as corrugated steel that protect the elongated member can be reduced.

[0016] Furthermore, according to the above configuration, the rear surface of the bottom wall is provided with a restricting portion that faces the bottom surface of the groove. This restricts the elongated member accommodated in the groove from moving rearward from the groove. This prevents the elongated member from falling out of the groove.

[0017] [Aspect 5] A front structure of a vehicle described in any one of [Aspect 1] to [Aspect 4], in which a gate mark, which is a mark left by a gate when injection molding the front structure, is formed on the main body portion, and the gate mark is formed in a part different from the uneven portion.

[0018] When the front structure is integrally molded by injection molding, the flow direction of the molten resin flowing in the cavity near the gate is not fixed, making it difficult to align the fibers in the skin layer in the same direction. Therefore, if the gate marks are located on the uneven parts, it becomes difficult to achieve the improvement in strength that would be achieved by the uneven parts.

[0019] In this regard, with the above-described configuration, the gate marks are formed in a portion of the main body that is different from the uneven portion, and therefore, the strength of the main body can be suitably improved by the uneven portion.

[0020] [Aspect 6] A front structure of a vehicle as described in [Aspect 5], wherein the main body portion passes through the center of the upper portion in the vehicle width direction and has a shape that is symmetrical with respect to an imaginary plane perpendicular to the vehicle width direction, and the gate mark is located in the center.

[0021] According to the above configuration, when the front structure is integrally molded by injection molding, molten resin is filled into the cavity through a gate located in the center. Here, the main body portion of the front structure has a shape symmetrical with respect to the imaginary plane. Therefore, the molten resin in the cavity tends to flow along a fixed flow direction, such as from the center of the cavity that molds the upper portion toward the outside in the vehicle width direction and into the cavities that mold the side portions and stay portions. This makes it easier for the fiber orientation in the skin layer to be aligned in the flow direction. Therefore, the strength of the front structure can be further increased.

[0022] [Aspect 7] A front structure for a vehicle as described in [Aspect 6], in which the uneven portion is provided on the upper portion and a pair of stay portions, the main body portion has a weld portion formed by the collision of molten resins when the front structure is integrally molded by injection molding, and the weld portion is formed only on the side portion.

[0023] Because the upper portion and the pair of stays have components that extend in the vehicle width direction, when the vehicle body twists during turning, a load in the vehicle width direction is likely to act on the upper portion and the pair of stays. For this reason, the upper portion and the stays are required to have the strength to withstand the load.

[0024] When the front structure is integrally molded by injection molding, welds are formed in the front structure due to collisions between molten resins that branched in the cavity. At the welds, the flow direction is changed by the collision, which changes the orientation of the fibers. Therefore, the fibers are oriented in a direction that intersects with the flow direction of the molten resin flowing in the cavity. This tends to make the welds weaker than other parts.

[0025] In this regard, with the above-described configuration, the welds are formed only on the side portions. Therefore, the strength of the upper portion and the pair of stay portions is not reduced by the welds. Furthermore, the uneven portions provided on the upper portion and the pair of stay portions increase the strength of the upper portion and the pair of stay portions.

[0026] Therefore, the strength of the front structure can be further increased. [Effects of the Invention]

[0027] According to the present invention, the strength can be increased with a simple configuration. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a perspective view showing the front part of a vehicle equipped with a front structure according to one embodiment. [Figure 2] FIG. 2 is a rear view showing the front structure of FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. [Figure 4] FIG. 4 is a schematic diagram showing the orientation of fibers in the skin layer and the core layer. [Figure 5] FIG. 5 is a schematic diagram showing the orientation of fibers in the skin layer in the portion including the weld. DETAILED DESCRIPTION OF THE INVENTION

[0029] An embodiment of a vehicle front structure will be described below with reference to Figures 1 to 5. In this embodiment, the present invention is embodied as a front structure 22 of an automobile 10. In the following description, the front-to-rear direction of the automobile 10 will be referred to as the front-to-rear direction X, and the front and rear sides in the front-to-rear direction X will be simply referred to as the front and rear sides. The vehicle width direction of the automobile 10 will be referred to as the vehicle width direction W. The up-down direction of the automobile 10 when the automobile 10 is positioned on a horizontal plane will be referred to as the up-down direction Z, and the upper and lower sides in the up-to-down direction Z will be simply referred to as the upper and lower sides.

[0030] <Front structure 22> As shown in FIG. 1, an exterior member 13 is provided on a front portion 11 of an automobile 10, which integrally forms an outer shell of a portion of the front portion 11 below a pair of headlights 12.

[0031] A front structural body 22 that is attached to the front ends of a pair of front side members (not shown) of the vehicle body 20 and that forms part of the front part 21 of the vehicle body 20 is provided on the rear side of the exterior member 13 . The front structure 22 is made of fiber-reinforced resin and is integrally formed by injection molding. As the fiber-reinforced resin, for example, glass fiber-reinforced resin obtained by mixing glass fiber into polyethylene resin can be used.

[0032] (Main body 23) As shown in FIG. 2, the front structure 22 includes a main body 23 having a pair of side portions 24A, 24B, an upper portion 25, and a pair of stay portions 26A, 26B.

[0033] The pair of side portions 24A, 24B are provided at an interval from each other in the vehicle width direction W and extend in the up-down direction Z. The upper portion 25 is a portion that extends in the vehicle width direction W and connects the upper ends of the pair of side portions 24A, 24B together.

[0034] The stay portion 26A is a portion that extends from the lower end of the side portion 24A in a direction intersecting both the vehicle width direction W and the up-down direction Z and is connected to the upper portion 25. The stay portion 26B is a portion that extends from the lower end of the side portion 24B in a direction intersecting both the vehicle width direction W and the up-down direction Z and is connected to the upper portion 25.

[0035] The pair of stay portions 26A, 26B together form an arch portion 26 that extends in a curved shape such that the central portion in the vehicle width direction W protrudes upward as a whole. An upper edge 26a of the arch portion 26 is connected to a lower edge 25a of the upper portion 25 at the center of the upper portion 25 in the vehicle width direction W.

[0036] A lower edge 26 b of the arch portion 26 forms part of the outer peripheral edge 22 a of the front structure 22 . The main body portion 23 has a shape that is symmetrical with respect to an imaginary plane V that passes through the center of the upper portion 25 in the vehicle width direction W and is perpendicular to the vehicle width direction W.

[0037] (Side wall portion 31, bottom wall portion 32) As shown in FIGS. 2 and 3, the main body 23 has a pair of side walls 31 and a bottom wall 32.

[0038] The pair of side walls 31 extend in the front-rear direction X and are spaced apart in a direction perpendicular to both the front-rear direction X and the direction in which the portions 24A, 24B, 25, 26 of the main body 23 extend (see FIG. 2).

[0039] The bottom wall portion 32 connects the rear ends of the pair of side wall portions 31 together (see FIG. 3). The bottom wall 32 is provided with a protrusion 33 that protrudes toward the front. A groove 34 that opens toward the rear is provided on the rear surface 32b of the bottom wall 32. The groove 34 is a part that is formed integrally with the protrusion 33 on both sides.

[0040] 2, the protrusions 33 extend in the same direction as the portions 24A, 24B, 25, and 26 of the main body 23. The protrusions 33 are provided continuously over the entire portions 24A, 24B, 25, and 26 of the main body 23, i.e., over the entire main body 23.

[0041] The groove 34 is configured to accommodate a portion of an elongated member routed in the front part 11 of the automobile 10. In Fig. 3, a wire harness 14 is shown by a two-dot chain line as an example of the elongated member. In addition to wire harnesses, other examples of the elongated member include a washer hose and a hood lock wire.

[0042] 2 and 3, restricting portions 35 are provided on the rear surface 32b of the bottom wall portion 32. In this embodiment, a pair of restricting portions 35 are provided at an interval in the vehicle width direction W on the upper portion 25 (see FIG. 2).

[0043] 3, each of the restricting portions 35 has a base end portion 35a that protrudes rearward from the rear surface 32b, and an opposing wall portion 35b that extends from the base end portion 35a in a direction (in this embodiment, the up-down direction Z) that intersects with the extension direction of the groove portion 34. The opposing wall portion 35b faces the bottom surface 34a of the groove portion 34 in the front-rear direction X.

[0044] (Gate mark 41, weld part 42) As shown in FIG. 2, the main body 23 has gate marks 41 that are marks left by the gate when the front structure 22 is injection molded, and welds 42 that are formed by collision of molten resins.

[0045] The gate mark 41 is located in the center of the bottom wall portion 32 of the upper portion 25 in the vehicle width direction W. The gate mark 41 is formed in a different part from the protrusion portion 33. In this embodiment, the welds 42 are formed only on the pair of side portions 24A, 24B. One weld 42 is formed on each of the side portions 24A, 24B. The welds 42 extend in a direction intersecting the extension direction of the grooves 34 (in this embodiment, the vehicle width direction W).

[0046] (skin layer 51, core layer 52) As shown in Fig. 4, the pair of side wall portions 31 and the bottom wall portion 32 are configured by a pair of skin layers 51 and a core layer 52 disposed between the pair of skin layers 51. Note that Fig. 4 shows the skin layer 51 and the core layer 52 in the bottom wall portion 32.

[0047] The skin layer 51 is a portion of the molten resin in the cavity that cools and solidifies before the central portion (core layer 52) when the front structure 22 is integrally molded by injection molding, and is formed on the molding surface side.

[0048] In the pair of skin layers 51, the orientation of the fibers 53 is aligned with the flow direction R of the molten resin flowing in the cavity (in this embodiment, the extending direction of the portions 24A, 24B, 25, 26 of the main body portion 23) compared to the core layer 52.

[0049] As shown in FIG. 5, in the skin layer 51 at the weld portion 42, the orientation of the fibers 53 is aligned in a direction intersecting the flow direction R (in this embodiment, the vehicle width direction W). <Operation of this embodiment> Next, the operation of this embodiment will be described.

[0050] When the front structure 22 is integrally molded by injection molding, a fountain flow phenomenon occurs at the front end of the molten resin flowing in the mold cavity in the flow direction R, where the molten resin bubbles up and flows toward the molding surface of the mold. As a result, fibers 53 in the molten resin move along the surface of the front end and flow toward the molding surface of the mold. As a result, as shown in FIG. 4, in the skin layer 51 on the molding surface side, which is formed by cooling and solidifying earlier than the central portion (core layer 52) of the molten resin filled in the cavity, the orientation of the fibers 53 tends to be aligned in the flow direction R (the extension direction of each of the portions 24A, 24B, 25, and 26). Since fiber-reinforced resin has increased strength in the direction in which the orientation of the fibers 53 is aligned, the skin layer 51 increases the strength of the front structure 22.

[0051] According to the above configuration, the protrusions 33 increase the surface area of ​​the main body 23 of the front structure 22. This increases the area of ​​the skin layer 51. As a result, the strength of the front structure 22 can be further increased.

[0052] Furthermore, according to the above configuration, the lower edge 26b of the arch portion 26 forms part of the outer peripheral edge 22a of the front structure 22. In other words, the front structure 22 does not have the lower portion described in Patent Document 1 that connects the lower ends of the pair of side portions 24A, 24B and extends in the vehicle width direction W. Even in this case, if the protruding portion 33 is provided on the main body portion 23, the strength of the front structure 22 is increased by the above-mentioned action, and therefore sufficient strength is obtained as a component that forms part of the front portion 21 of the vehicle body 20.

[0053] <Effects of this embodiment> Next, the effects of this embodiment will be described. (1) The front structure 22 includes a main body 23 having a pair of side portions 24A, 24B spaced apart in the vehicle width direction W and extending in the up-down direction Z, an upper portion 25 extending in the vehicle width direction W and connecting upper ends of the pair of side portions 24A, 24B, and a pair of stay portions 26A, 26B extending from the lower end of each of the pair of side portions 24A, 24B in a direction intersecting both the vehicle width direction W and the up-down direction Z and connected to the upper portion 25. Lower edges 26b of the pair of stay portions 26A, 26B form part of the outer peripheral edge 22a of the front structure 22. Protrusions 33 are provided in each of the pair of side portions 24A, 24B, the upper portion 25, and the pair of stay portions 26A, 26B as concave-convex portions extending along the extending direction of the corresponding portion.

[0054] This configuration provides the above-mentioned effects. Therefore, the strength of the front structure 22 can be increased with a simple configuration. (2) The protrusions 33 as the uneven portions are provided continuously over the pair of side portions 24A, 24B, the upper portion 25, and the pair of stay portions 26A, 26B.

[0055] According to this configuration, the area of ​​the skin layer 51 can be increased over the entire body portion 23. Therefore, the strength of the front structure 22 can be further increased. (3) The main body 23 has a pair of side walls 31 extending in the front-rear direction X and spaced apart from each other, and a bottom wall 32 connecting rear ends of the pair of side walls 31. A protrusion 33 serving as an uneven portion is provided on the bottom wall 32 and protrudes toward the front side. A groove 34 extending along the protrusion 33 and opening to the rear side is provided on the rear surface 32b of the bottom wall 32.

[0056] With this configuration, the size of the front structure 22 in the front-rear direction X can be made smaller than when the protrusions 33 are protrusions that protrude rearward from the bottom wall 32 of the main body 23.

[0057] (4) A restricting portion 35 is provided on the rear surface 32b of the bottom wall portion 32. The restricting portion 35 extends in a direction intersecting the extension direction of the groove portion 34 (in this embodiment, the vertical direction Z) and faces the bottom surface 34a of the groove portion 34 in the front-rear direction X.

[0058] According to this configuration, a portion of the wire harness 14 routed in the front part 11 of the automobile 10 can be housed in the groove portion 34. Since the wire harness 14 is surrounded by the resin groove portion, protective materials such as corrugated cardboard that are normally provided to protect the wire harness 14 can be reduced.

[0059] Furthermore, according to the above configuration, the restricting portion 35 that faces the bottom surface 34a of the groove portion 34 is provided on the rear surface 32b of the bottom wall portion 32. Therefore, the wire harness 14 accommodated in the groove portion 34 is restricted from moving rearward from the groove portion 34. Therefore, the wire harness 14 can be prevented from falling off from the groove portion 34.

[0060] (5) The main body 23 has a gate mark 41 formed thereon, which is a mark left by a gate when the front structure 22 is injection molded. The gate mark 41 is formed in a location different from the protrusion 33. When the front structure 22 is integrally molded by injection molding, the flow direction R of the molten resin flowing in the cavity near the gate is not fixed, making it difficult to align the fibers 53 in the skin layer 51 in the same direction. For this reason, if the gate marks 41 are provided on the protrusions 33, it becomes difficult to obtain the improvement in strength provided by the protrusions 33.

[0061] In this regard, according to the above configuration, the gate marks 41 are formed in a part of the main body 23 that is different from the protrusions 33. Therefore, the strength of the main body 23 can be suitably improved by the protrusions 33.

[0062] (6) The main body 23 has a shape that is symmetrical with respect to an imaginary plane V that passes through the center of the upper portion 25 in the vehicle width direction W and is perpendicular to the vehicle width direction W. The gate mark 41 is located in the center.

[0063] According to this configuration, when the front structure 22 is integrally molded by injection molding, molten resin is filled into the cavity from the gate located in the center. Here, the main body 23 of the front structure 22 has a shape that is symmetrical with respect to the imaginary plane V. Therefore, the molten resin in the cavity tends to flow along a constant flow direction R, such as flowing from the center of the cavity that molds the upper portion 25 outward in the vehicle width direction W and into the cavities that mold the side portions 24A (24B) and the stay portions 26A (26B). This makes it easier for the orientation of the fibers 53 in the skin layer 51 to be aligned in the flow direction R. Therefore, the strength of the front structure 22 can be further increased.

[0064] (7) The protrusions 33 are provided on the upper portion 25 and the pair of stay portions 26A, 26B. The main body portion 23 has welds 42 formed by collision of molten resins when the front structure 22 is integrally formed by injection molding. The welds 42 are formed only on the pair of side portions 24A, 24B.

[0065] Since the upper portion 25 and the pair of stay portions 26A, 26B have components that extend in the vehicle width direction W, when the vehicle body 20 is twisted, such as when the automobile 10 is turning, a load in the vehicle width direction W is likely to act on the upper portion 25 and the pair of stay portions 26A, 26B. For this reason, the upper portion 25 and the pair of stay portions 26A, 26B are required to have a strength that can withstand the load.

[0066] When the front structure 22 is integrally molded by injection molding, the molten resin that branched in the cavity collides with each other to form the weld 42 in the front structure 22. In the weld 42, the flow direction R (in this embodiment, the vertical direction Z, which is the direction in which the side portions 24a, 24B extend) is changed by the collision, and the orientation direction of the fibers 53 is changed. For this reason, as shown in FIG. 5 , the fibers 53 are oriented in a direction (in this embodiment, the vehicle width direction W) that intersects with the flow direction R of the molten resin flowing in the cavity. As a result, the strength of the weld 42 is likely to be lower than that of other portions.

[0067] In this regard, with the above configuration, the welds 42 are formed only on the pair of side portions 24A, 24B. Therefore, the strength of the upper portion 25 and the pair of stay portions 26A, 26B is not reduced by the welds 42. Furthermore, because the protrusions 33 are provided on the upper portion 25 and the pair of stay portions 26A, 26B, the strength of the upper portion 25 and the pair of stay portions 26A, 26B is increased by the protrusions 33.

[0068] Therefore, the strength of the front structure 22 can be further increased. <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0069] The front structure 22 is not limited to one in which the gate marks 41 are formed at the positions illustrated in this embodiment, and the arrangement and number of the gate marks 41 may be changed as appropriate as long as the welds 42 are formed only in the pair of side portions 24A, 24B. For example, the front structure 22 may have multiple gate marks 41 arranged at intervals from one another along the extension direction of each portion of the main body portion 23.

[0070] The front structure 22 is not limited to the one in which the welds 42 are provided only in the pair of side portions 24A, 24B as exemplified in this embodiment, but may also have the welds 42 provided in the upper portion 25 or the arch portion 26. This configuration improves the flexibility in installing the gate when the front structure 22 is integrally molded by injection molding.

[0071] The front structure 22 may be configured such that the gate mark 41 is located on the protrusion 33. In the present embodiment, the pair of stay portions 26A, 26B as a whole constitute the arch portion 26, but the pair of stay portions 26A, 26B may be provided independently of each other. More specifically, the stay portions 26A and 26B are not limited to being connected to the upper portion 25 at the center of the upper portion 25 in the vehicle width direction W, and may be connected to the upper portion 25 at positions spaced apart from each other in the vehicle width direction W. In this case, the protrusions 33 formed on the pair of stay portions 26A, 26B may be connected to the protrusions 33 formed on the upper portion 25, respectively.

[0072] The main body 23 is not limited to a shape symmetrical with respect to the imaginary plane V, and may have an asymmetric shape with respect to the imaginary plane V as long as it has a pair of side portions 24A, 24B, an upper portion 25, and a pair of stay portions 26A, 26B.

[0073] The arrangement and number of the restricting portions 35 are not limited to those exemplified in this embodiment and may be changed as appropriate depending on the type, number, position, etc. of the elongated members routed in the groove portions 34. For example, the restricting portions 35 may be provided on the pair of side portions 24A, 24B or the pair of stay portions 26A, 26B. The number of restricting portions 35 may be one, or three or more. Furthermore, the restricting portions 35 may be omitted.

[0074] The front structure 22 is not limited to having the protrusion 33 provided only on the bottom wall 32 as illustrated in this embodiment, but may also have the protrusion 33 provided on at least one of the pair of side wall portions 31, for example.

[0075] The protrusions 33 do not have to extend continuously over the entire body 23. In other words, the front structure 22 may have a plurality of protrusions 33 arranged at intervals along the extension direction of the sections 24A, 24B, 25, 26A, and 26B of the body 23.

[0076] The protrusions 33 are not limited to those provided on all of the pair of side portions 24A, 24B, the upper portion 25, and the pair of stay portions 26A, 26B as illustrated in this embodiment. In other words, the front structure 22 may be one in which the protrusions 33 are provided on at least one of the side portions 24A, 24B, the upper portion 25, the stay portions 26A, and the stay portions 26B.

[0077] The uneven portion according to the present invention is not limited to the protrusion 33 exemplified in this embodiment. For example, the uneven portion may be a protrusion protruding rearward from the rear surface 32b of the bottom wall 32. In this case, a groove extending along the protrusion and opening to the front is provided on the front surface 32a of the bottom wall 32.

[0078] The front structure 22 may support the headlights 12 and the exterior members 13, or may be disposed in front of the radiator to support the radiator. The upper portion 25 of the front structure 22 may be provided with a hood lock.

[0079] The front structure according to the present invention is not limited to the front structure 22 of the automobile 10, but may be any front structure that constitutes a part of the front of the vehicle body. [Explanation of symbols]

[0080] R…flow direction V...Virtual plane W: Vehicle width direction X…Anteroposterior direction Z…Vertical direction 10. Automobiles 11...Front part 12...Headlight 13...Exterior material 14...Wire harness 20...Body 21...Front part 22...Front structure 22a...Outer edge 23...Main body 24A, 24B...Side section 25...Upper 25a...edge 26...Arch section 26A, 26B...Stay section 26a, 26b...Edge 31...Side wall 32...Bottom wall 32a...Front 32b…Rear side 33…Protrusion portion 34...Groove 34a…Bottom surface 35...Regulatory Department 35a...Proximal end 35b...Opposing wall part 41...Gate remains 42...Weld area 51...Skin layer 52...Core layer 53...Fiber

Claims

1. A front structure made of fiber reinforced resin that is integrally molded by injection molding and forms a part of the front of a vehicle body, When the width direction and the up-down direction of the vehicle are defined as the vehicle width direction and the up-down direction, and the upper side and the lower side in the up-down direction are simply defined as the upper side and the lower side, a pair of side portions provided at an interval in the vehicle width direction and extending in the up-down direction; an upper portion extending in the vehicle width direction and connecting upper ends of the pair of side portions to each other; a pair of stay portions extending from lower ends of the pair of side portions in a direction intersecting both the vehicle width direction and the up-down direction and connected to the upper portion, lower end edges of the pair of stay portions form part of an outer circumferential edge of the front structure, At least one of the side portion, the upper portion, and the stay portion is provided with an uneven portion extending in the extending direction of the portion. The front structure of the vehicle.

2. The uneven portion is provided continuously over the pair of side portions, the upper portion, and the pair of stay portions. The front structure of a vehicle according to claim 1.

3. When the longitudinal direction of the vehicle is defined as the longitudinal direction, and the front side and the rear side in the longitudinal direction are simply defined as the front side and the rear side, The main body portion has a pair of side wall portions extending in the front-rear direction and arranged at an interval from each other, and a bottom wall portion connecting rear ends of the pair of side wall portions to each other, the concave-convex portion is a protrusion provided on the bottom wall portion and protruding toward the front side, A groove portion extending along the protrusion portion and opening to the rear side is provided on the rear surface of the bottom wall portion. The vehicle front structure according to claim 1 or 2.

4. A restricting portion is provided on the rear surface of the bottom wall portion, the restricting portion extending in a direction intersecting the extending direction of the groove portion and facing the bottom surface of the groove portion. The front structure of a vehicle according to claim 3.

5. a gate mark formed on the main body portion, the gate mark being a mark made by a gate when the front structure is injection molded; the gate marks are formed in a portion different from the uneven portion; The front structure of a vehicle according to claim 1.

6. the main body portion has a shape that is symmetrical with respect to a virtual plane that passes through a center portion of the upper portion in the vehicle width direction and is perpendicular to the vehicle width direction, The gate mark is located in the central portion. The front structure of a vehicle according to claim 5.

7. The uneven portion is provided on the upper portion and the pair of stay portions, the main body has a weld portion formed by collision of molten resins when the front structure is integrally molded by injection molding, The weld portion is formed only on the side portion. The front structure of a vehicle according to claim 6.

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