Vehicle front structure

Abstract

The objective is to obtain a vehicle front structure that can suppress deformation of the integrally molded member during the molding process. [Solution] Multiple cylindrical bosses 55 and 57 are provided on the upper wall portion 46 and the rear wall portion 48, which correspond to a part of the outer edge of the upper member 22. When releasing the integrally molded member 25, which includes the wheelhouse 14 and the upper member 22, from the mold in which the integrally molded member 25 is formed, the integrally molded member 25 is pressed by an ejector pin. By providing bosses 55 and 57 on the upper wall portion 46 and the rear wall portion 48, the rigidity of the upper wall portion 46, the rear wall portion 48 and the bosses 55 and 57 can be improved. Therefore, when releasing the integrally molded member 25 from the mold, the ejector pin presses the bosses 55 and 57, which is more rigid than when the ejector pin presses the vertical wall portion 28. As a result, the release properties of the integrally molded member 25 are improved, and deformation of the integrally molded member 25 can be suppressed.

Description

Technical Field

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

Background Art

[0002] Patent Document 1 discloses a technique related to a vehicle front structure including a cast body formed by die casting. In this prior art, the cast body is integrally formed across left and right wheel houses respectively provided on the vehicle rear side of the front wheels from a pair of sus towers supporting the upper ends of the front wheel suspensions, and the left and right wheel houses are connected by a cross member that constitutes the skeleton of the lower front end of the cabin and extends in the vehicle width direction.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above prior art, a plurality of ribs are formed on the outer side in the vehicle width direction of the cast body. Therefore, when the cast body is released from the mold for forming the cast body, the cast body (integrally formed member) may be deformed due to the release resistance caused by the formation of the plurality of ribs.

[0005] In consideration of the above facts, an object of the present invention is to obtain a vehicle front structure capable of suppressing deformation of an integrally formed member during the molding of the integrally formed member.

Means for Solving the Problems

[0006] Note: In the translation of the patent number, it is assumed that "CN117565978" is the correct format, and the "公報" is translated as "No." for the patent document number. If there are specific requirements for the translation of the patent number, it can be adjusted accordingly.The front structure of a vehicle according to the first embodiment comprises a wheel house in which the front wheels are arranged and which includes a vertical wall portion extending in the longitudinal and vertical directions of the vehicle; an upper member integrally molded with the wheel house and provided on the rearward side in the longitudinal direction of the vehicle from the suspension tower provided in the wheel house and continuous with the vertical wall portion; a peripheral wall portion formed on the outer edge of the upper member and erected outward from the vertical wall portion in the vehicle width direction; and a plurality of bosses provided on the peripheral wall portion and formed to be thicker than the peripheral wall portion.

[0007] The front vehicle structure according to the first embodiment includes a wheelhouse and an upper member. The wheelhouse is composed of a vertical wall portion that extends in the longitudinal and vertical directions of the vehicle. The upper member is molded integrally with the wheelhouse and is located behind the suspension tower in the longitudinal direction of the vehicle (between the suspension tower and the pillar), and is formed in continuous with the vertical wall portion.

[0008] In this embodiment, a peripheral wall portion is erected on the outer edge of the upper member, extending outward in the vehicle width direction from the vertical wall portion, and this peripheral wall portion is provided with a plurality of bosses that are formed to be thicker than the peripheral wall portion.

[0009] Since the upper member is molded integrally with the wheelhouse, when releasing the integrally molded member from the mold used to mold the wheelhouse and upper member (integrated molded member), the integrally molded member is pressed by an ejector pin. By providing a boss on the integrally molded member, the ejector pin can strike the boss, making it possible to release the integrally molded member from the mold.

[0010] In this embodiment, since the boss is provided on the peripheral wall portion of the upper member, it is possible to improve the rigidity of both the peripheral wall portion and the boss. Therefore, when releasing the integrally molded member from the mold, the pressing pin presses the boss, and compared to the case where the ejection pin presses the vertical wall portion, the rigidity is higher, improving the release properties of the integrally molded member and suppressing deformation of the integrally molded member including the wheelhouse. As a result, the dimensional accuracy of the integrally molded member including the wheelhouse is improved, and the fastening accuracy of the outer panel provided on the outside of the wheelhouse in the vehicle width direction is improved.

[0011] Furthermore, the statement that the boss is "formed to be thicker than the surrounding wall" means that when the boss is placed on the surrounding wall, the boss and the surrounding wall become one, which in turn makes the surrounding wall thicker.

[0012] The vehicle front structure according to the second embodiment is such that, in the vehicle front structure according to the first embodiment, the boss is formed to protrude on the inner surface of the peripheral wall portion, and the outer surface of the peripheral wall portion is formed to be substantially flat.

[0013] In the vehicle front structure according to the second embodiment, the boss is formed to protrude on the inner side of the peripheral wall, and the outer surface of the peripheral wall is formed to be substantially flat. Since the boss is formed to be thicker than the peripheral wall of the upper member, by forming the boss to protrude on the inner side of the peripheral wall, it is possible to avoid affecting the shape of the outer surface of the peripheral wall, and thus it is possible to suppress interference with other parts around the upper member.

[0014] The vehicle front structure according to the third embodiment is a vehicle front structure according to the first embodiment, wherein a plurality of first ribs are erected on the upper member extending outward in the vehicle width direction from the vertical wall portion, and the draft angle of the first ribs is greater than the draft angle of other ribs in parts other than the upper member.

[0015] In the vehicle front structure according to the third embodiment, a plurality of first ribs are erected on the upper member, extending outward in the vehicle width direction from the vertical wall portion. By making the draft angle of these first ribs larger than the draft angle of other ribs in parts other than the upper member, the release properties from the mold are improved for the first ribs formed on the upper member.

[0016] The vehicle front structure according to the fourth embodiment is such that, in the vehicle front structure according to the third embodiment, a portion of the plurality of first ribs is connected to the boss.

[0017] In the vehicle front structure according to the fourth embodiment, a portion of the multiple first ribs is connected to a boss, thereby improving the rigidity of the first ribs connected to the boss and the boss itself. [Effects of the Invention]

[0018] As described above, the vehicle front structure according to the present invention can suppress deformation of the integrally molded member during the molding of the integrally molded member. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view of a vehicle to which the vehicle front structure according to this embodiment is applied, viewed from the left diagonal and above side of the vehicle. [Figure 2] (A) is a schematic cross-sectional view showing the draft angle of a first rib formed on an upper member that constitutes a part of the front structure of a vehicle according to this embodiment, and (B) is a schematic cross-sectional view showing the draft angle of a rib in a part other than the upper member, showing a comparative example of (A). [Modes for carrying out the invention]

[0020] Hereinafter, the vehicle front structure according to an embodiment of the present invention will be described with reference to the drawings. In each figure, the arrow FR appropriately shown indicates the front side in the vehicle front-rear direction, and the arrow UP indicates the upper side in the vehicle up-down direction. The arrow RH indicates the right side in the vehicle width direction, and in this embodiment, it indicates the outside in the vehicle width direction. Hereinafter, when simply explaining the front-rear, up-down, and left-right directions, unless otherwise specified, it shall indicate the front and rear in the vehicle front-rear direction, the up and down in the vehicle up-down direction, and the left and right in the vehicle left-right direction (vehicle width direction).

[0021] <Configuration of the vehicle front structure> First, the configuration of the vehicle front structure according to the present embodiment will be described.

[0022] FIG. 1 shows the front part (vehicle front part) 11 of a vehicle 12 to which a vehicle front structure 10 according to the present embodiment is applied. Although not shown in the figure, this vehicle 12 is, for example, an electric vehicle and a fuel cell vehicle that run on power generated by a power unit.

[0023] In the vehicle 12 shown in FIG. 1, wheelhouses 14 in which front wheels (not shown) are arranged are provided on the left and right of the vehicle front part 11, respectively, and the right wheelhouse 14 and the left wheelhouse 14 are connected by a cross member 16. At the upper end of each wheelhouse 14, an apron upper member 18 extends along the vehicle front-rear direction, and a suspension tower (hereinafter referred to as "suspension tower") 20 is provided inside the apron upper member 18 in the vehicle width direction.

[0024] An upper member 22 extending in the vehicle up-down direction and the vehicle front-rear direction is provided on the rear side of the suspension tower 20 and outside the suspension tower 20 in the vehicle width direction. A front side member 24 extending in the vehicle up-down direction and the vehicle front-rear direction is provided below the suspension tower 20 and the upper member 22. And a front pillar (pillar) 26 extending in the vehicle up-down direction and the vehicle front-rear direction is provided on the rear side of the upper member 2 and the front side member 24.

[0025] The front end of a roof side rail, which supports the upper end of a front door (not shown) and extends in the longitudinal direction of the vehicle, is connected to the upper end of the front pillar 26. The front end of a rocker, which is located on the outer side of a floor panel (not shown) in the vehicle width direction and extends in the longitudinal direction of the vehicle, is connected to the lower side of the front pillar 26.

[0026] In this embodiment, the left and right wheelhouses 14, including the suspension tower 20 and front side member 24, the left and right upper members 22 and cross member 16 are integrally formed by casting using, for example, an aluminum alloy or a magnesium alloy (integrally formed member 25).

[0027] In this embodiment, the integrally molded member 25 is formed by sliding the mold outward in the vehicle width direction when forming the outer surface in the vehicle width direction of, for example, the wheelhouse 14 and the upper member 22, due to the structure of the mold. For this reason, the wheelhouse 14 and the upper member 22 in this embodiment are formed so that the outer side in the vehicle width direction is open.

[0028] (Wheelhouse) First, the wheelhouse 14 in this embodiment will be described.

[0029] As described above, the pair of left and right wheelhouses 14 are composed of a suspension tower 20 and a front side member 24, respectively. As shown in Figure 1, the wheelhouse 14 has a vertical wall portion 28 that extends in the vehicle's longitudinal direction and vertical direction inside the vehicle's fender panel (not shown). The vertical wall portion 28 is formed to bulge inward in the vehicle's width direction along the shape of the suspension tower 20 above the front side member 24, which will be described later.

[0030] Furthermore, as mentioned above, an apron upper member 18 is provided at the upper end of the wheelhouse 14, and a front side member 24 extends in the longitudinal direction of the vehicle from the lower part of the wheelhouse 14.

[0031] The front side member 24 is composed of an upper wall portion 30 that forms the upper end of the front side member 24 and a lower wall portion 32 that forms the lower end of the front side member 24, both extending along the longitudinal direction of the vehicle. Between the upper wall portion 30 and the lower wall portion 32, multiple lateral wall portions 34 extend along the longitudinal direction of the vehicle, and the upper wall portion 30, the lower wall portion 32, and the lateral wall portions 34 are each erected outward from the vertical wall portion 28 in the vehicle width direction.

[0032] Furthermore, on the front side member 24A, multiple vertical ribs 36 are provided between the upper wall portion 30 and the lower wall portion 32, oriented in the vertical direction of the vehicle, and these vertical ribs 36 are arranged along the longitudinal direction of the vehicle.

[0033] On the other hand, on the rear 24B side of the front side member 24, multiple inclined ribs 38 that slope upward towards the rear of the vehicle and multiple inclined ribs 40 that slope downward towards the rear of the vehicle are provided between the upper wall portion 30 and the lower wall portion 32, and are connected to each other with the lateral wall portion 34 in between, forming an apparent truss structure. In this way, the inclined ribs 38 and 40 are connected to each other with the lateral wall portion 34 in between, making it difficult for bending moments to occur and suppressing deformation.

[0034] Furthermore, approximately cylindrical or columnar bosses 42 are provided at the intersections of the inclined ribs 38 and 40 with the side wall portion 34, and on the side wall portion 34. These bosses 42 serve as bases to which ejection pins (not shown) that are used to release the integrally molded member 25, including the wheelhouse 14, from the mold during molding, make contact.

[0035] The position and size of the boss 42 can be appropriately changed by adjusting the mass balance of the integrally molded member 25. Furthermore, the boss 42 may be used not only as a base for the ejector pin to contact, but also as a base for fastening to other parts.

[0036] (Upper Member) Next, the upper member 22 in this embodiment will be described.

[0037] In this embodiment, the left and right pair of upper members 22 are provided along the longitudinal direction of the vehicle, between the suspension tower 20 and the front pillar 26 of the wheelhouse 14, and above the front side member 24.

[0038] The upper member 22 is connected to the wheelhouse 14 on the inside in the vehicle width direction and has a vertical wall portion 28 that extends in the vehicle longitudinal direction and in the vehicle vertical direction. Furthermore, the upper member 22 has a roughly triangular shape when viewed from the outside of the vehicle in a side view, and an upper wall portion (circumferential wall portion) 46 is erected from the upper end of the vertical wall portion 28 toward the outside in the vehicle width direction and extends along the vehicle longitudinal direction, connecting to the upper end portion 44 that constitutes the upper end of the apron upper member 18 at the upper end of the upper member 22.

[0039] Furthermore, the rear end of the upper member 22 has a rear wall portion (circumferential wall portion) 48 that forms the boundary between the rear end of the upper wall portion 46 and the front pillar 26, which is erected from the rear end of the vertical wall portion 28 outward in the vehicle width direction and is formed along the vehicle's vertical direction. In addition, the front end of the upper member 22 has an inclined rib 50 that forms the boundary with the wheelhouse 14, which is erected from the vertical wall portion 28 outward in the vehicle width direction and is formed to be inclined downward towards the vehicle as it approaches the rear of the vehicle.

[0040] Furthermore, a rear wall portion 52 is provided between the upper end of the inclined rib 50 and the front end of the upper wall portion 46, forming the rear end of the apron upper member 18 and extending in the vehicle's vertical and vehicle width directions. Additionally, the lower end of the upper member 22 has a lower wall portion 54 that forms a boundary with the front side member 24, which is erected from the vertical wall portion 28 outward in the vehicle width direction and formed along the vehicle's longitudinal direction.

[0041] In other words, in this embodiment, the upper member 22 is bounded by the upper wall portion 46, the rear wall portion 52 of the apron upper member 18, the inclined rib 50, the rear wall portion 48, and the lower wall portion 54, forming the boundary (outer edge of the upper member 22) with other parts of the integrally molded member 25.

[0042] Here, multiple cylindrical bosses 55 and 57 are provided on the upper wall 46 and the rear wall 48, respectively. The bosses 55 and 57 are thicker than the upper wall 46 and the rear wall 48, and are formed at approximately the same height (approximately flush) as the upper wall 46 and the rear wall 48.

[0043] Meanwhile, from the inclined rib 50, multiple first arc ribs (first ribs) 56 extend outwards, extending upwards towards the rear of the vehicle as they move towards the rear and downwards towards the vehicle. These first arc ribs 56 are erected outwards from the vertical wall portion 28 in the vehicle width direction and are arranged with gaps between them. The upper ends of the first arc ribs 56 are connected to the upper wall portion 46, a boss 55 provided on the upper wall portion 46, and a boss 57 provided on the rear wall portion 48, respectively.

[0044] Furthermore, in this embodiment, multiple second arc ribs (first ribs) 58 intersect multiple first arc ribs 56. These second arc ribs 58 are formed to bulge gently in a convex shape towards the rear of the vehicle, downwards towards the vehicle, and both towards the rear and upwards of the vehicle.

[0045] Furthermore, these second arc ribs 58 are erected from the vertical wall portion 28 outward in the vehicle width direction and are arranged with gaps between them. The front end of the second arc rib 58 is connected to the inclined rib 50, the rear wall portion 52, and the upper wall portion 46, respectively, while the rear end of the second arc rib 58 is connected to the boss 57 provided on the rear wall portion 48 and to the rear wall portion 48, respectively.

[0046] Furthermore, in this embodiment, as shown in Figures 2(A) and (B), the draft angle θ of the first circular arc rib 56 and the second circular arc rib 58 is larger in inclination angle than the draft angle θ' of the rib 59 formed in parts other than the upper member 22, such as the wheelhouse 14 (see Figure 1) (θ>θ').

[0047] <Function and effect of the vehicle's front structure> Next, the operation and effects of the vehicle front structure according to this embodiment will be described.

[0048] In this embodiment, as shown in Figure 1, a wheelhouse 14 and an upper member 22 are provided. The wheelhouse 14 is configured to include a vertical wall portion 28 that extends in the vehicle's longitudinal direction and vertical direction. The upper member 22 is molded integrally with the wheelhouse 14, is located on the rearward side in the vehicle's longitudinal direction from the suspension tower 20 provided on the wheelhouse 14, and is formed continuously with the vertical wall portion 28.

[0049] Here, the upper wall portion 46 and the rear wall portion 48, which correspond to a part of the outer edge of the upper member 22, are provided with multiple cylindrical bosses 55 and 57, respectively. The upper member 22 is molded integrally with the wheelhouse 14. Therefore, when releasing the integral molded member 25, which includes the wheelhouse 14 and the upper member 22, from the mold used to mold the integral molded member 25, the integral molded member 25 is pressed by an ejector pin.

[0050] In this embodiment, bosses 55 and 57 are provided on the upper wall portion 46 and the rear wall portion 48 of the upper member 22, respectively. By providing bosses 55 and 57 on the upper wall portion 46 and the rear wall portion 48, the rigidity of the upper wall portion 46, the rear wall portion 48, and the bosses 55 and 57 can be improved, respectively.

[0051] Therefore, in this embodiment, when releasing the integrally molded member 25 from the mold, the pressing pins (not shown) press against the bosses 55 and 57, which, compared to the case where the extrusion pins press against the vertical wall portion 28, have higher rigidity, improving the release properties of the integrally molded member 25 and suppressing deformation of the integrally molded member 25.

[0052] Furthermore, since the bosses 55 and 57 are provided on the outer edge (upper wall portion 46, rear wall portion 48) of the upper member 22, that is, on the outer edge of the integrally molded member 25, when the integrally molded member 25 is released from the mold, the pressing pins will press at least the outer edge of the integrally molded member 25, making it possible to effectively release the integrally molded member 25 from the mold.

[0053] Thus, in this embodiment, by improving the release properties of the integrally molded member 25 from the mold, the dimensional accuracy of the integrally molded member 25 is improved, and the fastening accuracy of the outer panel (not shown) provided on the outside of the wheelhouse 14 in the vehicle width direction is improved. As a result of this improved dimensional accuracy of the integrally molded member 25, it becomes possible to integrally mold the wheelhouse 14 and the front pillar 26 as part of the integrally molded member 25.

[0054] Furthermore, in this embodiment, the bosses 55 and 57 are thicker than the upper wall portion 46 and the rear wall portion 48 of the upper member 22. Therefore, a portion of the outer circumferential surface of the bosses 55 and 57 protrudes from the inner surface 46A or outer surface 46B of the upper wall portion 46 and the inner surface 48A or outer surface 48B of the rear wall portion 48. Accordingly, in this embodiment, the bosses 55 and 57 are formed to protrude towards the inner surface 46A of the upper wall portion 46 and the inner surface 48A of the rear wall portion 48. Note that the outer surface 46B of the upper wall portion 46 and the outer surface 48B of the rear wall portion 48 may be formed in a substantially flat shape.

[0055] By forming the bosses 55 and 57 to protrude towards the inner surface 46A of the upper wall portion 46 and the inner surface 48A of the rear wall portion 48, it is possible to avoid affecting the shape of the outer surface 46B of the upper wall portion 46 and the outer surface 48B of the rear wall portion 48, thereby suppressing interference with other parts around the upper member 22.

[0056] In this embodiment, bosses 55 and 57 are provided separately from the fastening portion of the outer panel, but they may be used in conjunction with the fastening portion.

[0057] Furthermore, in this embodiment, as shown in Figures 2(A) and (B), multiple first circular arc ribs 56 and second circular arc ribs 58 are erected on the upper member 22, extending outward in the vehicle width direction from the vertical wall portion 28. The draft angle θ of the first circular arc ribs 56 and second circular arc ribs 58 is larger than the draft angle θ' of other ribs 59 in parts other than the upper member 22, thereby improving the release properties from the mold for the first circular arc ribs 56 and second circular arc ribs 58 formed on the upper member 22.

[0058] Furthermore, in this embodiment, the first arc rib 56 may be connected to the boss 55, and the second arc rib 58 may be connected to the boss 57. This improves the rigidity of the first arc rib 56 and boss 55, and the second arc rib 58 and boss 57. In this embodiment, compared to the case where the first arc rib 56 and boss 55, and the second arc rib 58 and boss 57 are provided separately, it is not necessary to increase the thickness of each to ensure rigidity, which makes it possible to reduce the volume and thus reduce weight.

[0059] Furthermore, in this embodiment, multiple first arc ribs 56 and second arc ribs 58 are erected on the upper member 22, which is located between the suspension tower 20 provided in the wheelhouse 14 and the front pillar 26. As a result, in this embodiment, when a collision occurs in the longitudinal direction of the vehicle, the multiple first arc ribs 56 and second arc ribs 58 are crushed, thereby absorbing the collision energy.

[0060] In this embodiment, as shown in Figures 2(A) and (B), the draft angle θ of the first circular arc rib 56 and the second circular arc rib 58 is greater than the draft angle θ' of the rib 59 formed in a part other than the upper member 22 (θ>θ').

[0061] As a result, in this embodiment, it is possible to improve the release properties of the first arc rib 56 and the second arc rib 58, and when the integrally molded member 25 is released from the mold during molding, it is possible to reduce the adverse effects on release properties (deformation, etc.) caused by the provision of multiple first arc ribs 56 and second arc ribs 58.

[0062] <Supplementary explanation of the above embodiment> In the above embodiment, it is explained that the upper member 22 is bounded from other parts by the rear wall portion 52, inclined rib 50, and lower wall portion 54 of the apron upper member 18. However, the boundary is set here for convenience in order to explain the upper member 22, and since the upper member 22 is part of the integrally molded member 25 including the wheelhouse 14, the extent of the upper member 22 can be changed as appropriate. For example, the rear end of the front side member 24 may be part of the upper member 22.

[0063] Furthermore, in this embodiment, the first arc rib 56 and the second arc rib 58 are formed in an arc shape, but they do not necessarily have to be formed in an arc shape and may be formed in a straight line. Also, the thickness of the first arc rib 56 and the second arc rib 58 does not necessarily have to be constant along the extension direction; for example, the thickness may be greater at the intersection with other parts.

[0064] Furthermore, the heights of the first arc rib 56 and the second arc rib 58 do not necessarily have to be constant along the extension direction. They may be partially lowered to speed up cooling, taking into consideration the balance of cooling time with other parts of the upper member 22 during the molding of the integrally molded member 25.

[0065] By the way, in this embodiment, the left and right wheelhouses 14, the left and right upper members 22, and the cross member 16 are integrally formed as a single molded member 25 by casting using an aluminum alloy or the like as the material, but this is not the only option. The integral molded member 25 may be integrally formed from, for example, CFRP, GFRP, or the like.

[0066] Furthermore, in this embodiment, the left and right wheelhouses 14, the left and right upper members 22, and the cross member 16 are molded as a single unit, but it is sufficient for the wheelhouses 14 and upper members 22 to be molded as a single unit; it is not necessarily required that the left and right sides be molded as a single unit.

[0067] Furthermore, in this embodiment, the front side member 24 is molded integrally with the wheelhouse 14, but it is not necessarily required that they be molded integrally. The front side member 24 may be fixed as a separate component to the lower side of the wheelhouse 14. In this case, it becomes possible to use different materials for the wheelhouse 14 and the front side member 24, and to use a different manufacturing method than the integrally molded member 25, such as extrusion molding.

[0068] Furthermore, although this embodiment does not explain that the front pillar 26 is molded integrally with the integrally molded member 25, it is of course possible for it to be molded integrally with the integrally molded member 25. However, if the front pillar 26 is formed as a separate component from the integrally molded member 25, it is possible to use different materials for the front pillar 26 and the integrally molded member 25. In this case, it is possible to use a different manufacturing method for the front pillar 26 than for the integrally molded member 25, such as press molding.

[0069] Although one embodiment of the present invention has been described above, the present invention is not limited to these embodiments, and various modifications may be used in appropriate combinations with one embodiment, and of course, the invention can be implemented in various forms without departing from the spirit of the present invention. [Explanation of symbols]

[0070] 10. Front structure of the vehicle 11 Front of the vehicle 12 vehicles 14 Wheelhouse 20 Suspension Tower 22 Upper Members 25. One-piece molded member 28 Vertical wall section 46 Upper wall (peripheral wall) 46A Inner surface (inner surface of the peripheral wall) 46B Outer surface (outer surface of the peripheral wall) 48 Rear wall (peripheral wall) 48A Inner surface (inner surface of the peripheral wall) 48B Outer surface (outer surface of the peripheral wall) 55 Boss 56. Circular rib (1st rib) 57 Boss 58. Circular rib (1st rib) θ Draft angle (draft angle of the first rib) θ' Draft angle (Draft angle of the rib in parts other than the upper member)

Claims

1. A wheelhouse is formed by including a vertical wall portion that extends in the longitudinal and vertical directions of the vehicle, in which the front wheels are located, An upper member is integrally molded with the wheelhouse, positioned further rearward in the vehicle's longitudinal direction than the suspension tower provided in the wheelhouse, and continuous with the vertical wall portion. Equipped with, A peripheral wall portion is formed on the outer edge of the upper member and is erected from the vertical wall portion toward the outside in the vehicle width direction, A plurality of bosses are provided on the peripheral wall portion and are formed to be thicker than the peripheral wall portion, A vehicle front structure comprising the following elements.

2. The vehicle front structure according to claim 1, wherein the boss is formed to protrude on the inner surface side of the peripheral wall portion, and the outer surface of the peripheral wall portion is formed to be substantially flat.

3. The vehicle front structure according to claim 1, wherein the upper member has a plurality of first ribs erected on it extending outward in the vehicle width direction from the vertical wall portion, and the draft angle of the first ribs is greater than the draft angle of the ribs in parts other than the upper member.

4. The vehicle front structure according to claim 3, wherein some of the plurality of first ribs are connected to the boss.

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