Vehicle front structure

Abstract

Reduce the air resistance of the vehicle. 【Solution means】The vehicle front structure includes a radiator 13 provided at the front of the vehicle 10, and a rear cover 30 that is arranged to cover the rear part of the radiator 13 and guides the air that has passed through the radiator 13 downward below the vehicle bottom surface. The rear cover 30 includes a cover body 40 and duct portions 50R, 50L. The cover body 40 covers the rear part of the radiator 13 in a state of being open forward. The duct portions 50R, 50L communicate with the cover body 40, extend rearward from the rear wall 43 of the cover body 40, at least the rear end portions are open downward, and a plurality of them are provided at intervals in the vehicle width direction X.

Description

Technical Field

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

Background Art

[0002] In the front part of vehicles such as automobiles, it is often used to arrange a radiator which is a heat exchanger for air cooling. Conventionally, it has been proposed to provide a rear cover that covers the rear of the radiator (for example, Patent Document 1). In the vehicle described in Patent Document 1, the air that has passed through the radiator is guided by the rear cover and discharged below the lower surface of the vehicle.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above vehicle, the air guided by the rear cover is discharged downward from the air outlet provided at the lower end of the vehicle toward the lower surface of the vehicle. And the air discharged from the air outlet interferes with the air flow (running wind) accompanying the vehicle running in the vicinity of the air outlet. Therefore, in the above vehicle, air flow turbulence is likely to occur in the vicinity of the air outlet below the lower surface of the vehicle. And this air flow turbulence contributes to an increase in the air resistance of the vehicle.

Means for Solving the Problems

[0005] A vehicle front structure for solving the above problems includes a radiator provided at the front of the vehicle, and a rear cover arranged to cover the rear part of the radiator and guide the air passing through the radiator downward below the vehicle bottom surface. In the vehicle front structure, the rear cover includes a cover body and a duct part. The cover body covers the rear part of the radiator in an open state forward. The duct part communicates with the cover body, extends rearward from the rear wall of the cover body, and at least the rear end part thereof opens downward, and a plurality of them are provided at intervals in the vehicle width direction.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0007] Hereinafter, with reference to FIGS. 1 to 7, an embodiment of the vehicle front structure will be described. Hereinafter, the width direction of the vehicle 10 will be referred to as the vehicle width direction X, the front-rear direction of the vehicle 10 will be referred to as the front-rear direction Y, and the up-down direction of the vehicle 10 when the vehicle 10 is positioned on a horizontal plane will be referred to as the up-down direction Z. Also, when viewing the vehicle 10 from the rear, the right side and the left side in the vehicle width direction X will be simply referred to as the "right side" and the "left side", respectively. Furthermore, the front side and the rear side in the front-rear direction Y will be simply referred to as the "front side" and the "rear side", respectively, and the upper side and the lower side in the up-down direction Z will be simply referred to as the "upper side" and the "lower side", respectively.

[0008] <Vehicle> As shown in FIGS. 1 and 2, a power chamber 11 is disposed at the front portion of the vehicle 10. A power device 12 including an electric motor as a power source is disposed in the power chamber 11. A radiator 13, which is a heat exchanger for air cooling, is provided at the front portion of the power chamber 11. The radiator 13 is used for cooling the power device 12. A radiator fan 14 and a fan shroud 15 are provided behind the radiator 13. The radiator fan 14 performs forced air blowing to the radiator 13 by generating an air flow in the front-rear direction Y. The fan shroud 15 extends so as to cover the periphery of the radiator fan 14.

[0009] Above the power chamber 11, a front hood 16 that covers the upper portion of the power chamber 11 is provided. Exterior members 17 such as a front grille and a front bumper are provided in front of the power chamber 11. The front portion of the power chamber 11 is covered by the exterior members 17. The exterior members 17 are provided with an opening 171 for introducing traveling wind to the radiator 13 disposed at the rear. Below the power chamber 11, an under cover 18 that covers the lower portion of the power chamber 11 is provided. At the rear portion of the power chamber 11, a dash panel 19 that constitutes the rear wall of the power chamber 11 is provided. On the right side of the power chamber 11, a front wheel 20R and a tire house 21R are disposed. On the left side of the power chamber 11, a front wheel 20L and a tire house 21L are disposed.

[0010] <Rear Cover> Behind the radiator 13, specifically behind the radiator fan 14 and the fan shroud 15, a rear cover 30 is provided. The rear cover 30 is arranged to cover the rear part of the radiator 13, specifically the rear part of the radiator fan 14 and the fan shroud 15. The rear cover 30 has a function of guiding the air that has passed through the radiator 13 from behind the radiator 13 to below the vehicle bottom surface 101 (Fig. 2). As shown in Fig. 1, in the under cover 18, at a position corresponding to the lower part of the rear cover 30, through holes (hereinafter, air discharge ports 22R, 22L) penetrating in the vertical direction Z are provided. As shown by arrows A1 to A3, B1 in Fig. 2, the air guided from behind the radiator 13 to the vehicle bottom surface 101 by the rear cover 30 is discharged to the outside of the vehicle 10 through the air discharge ports 22R, 22L (Fig. 1) of the under cover 18.

[0011] Hereinafter, the structure of the rear cover 30 will be described in detail. As shown in Figs. 3 to 5, the rear cover 30 includes one cover body 40 and two duct parts 50R, 50L. The rear cover 30 has a bilaterally symmetric structure.

[0012] <Cover body> The cover body 40 has an upper wall 41, a pair of side walls 42R, 42L, and a rear wall 43. The cover body 40 is arranged to cover the rear part of the radiator fan 14 and the fan shroud 15. The cover body 40 covers the rear part of the radiator fan 14 and the fan shroud 15 in a state of being open in the front and downward directions.

[0013] As shown in Figs. 1 and 2, the rear wall 43 of the cover body 40 extends in the vehicle width direction X and the vertical direction Z and is arranged to face the radiator 13 and the radiator fan 14. In the present embodiment, the air that has passed through the radiator 13 is blown against the rear wall 43 of the cover body 40.

[0014] As shown in FIGS. 3 to 6, the rear wall 43 of the cover body 40 includes a convex portion 431 that protrudes forward. The convex portion 431 constitutes the central portion in the vehicle width direction X of the rear wall 43. The convex portion 431 extends in the vertical direction Z with a convex cross-sectional arc shape forward. The front surface of the convex portion 431 has a convex shape that protrudes forward and extends in the vertical direction Z.

[0015] As shown in FIGS. 2, 3, and 6, the cover body 40 includes a front lower wall 44. The front lower wall 44 extends in the vehicle width direction X so as to connect the front portion of the lower end of the right side wall 42R and the front portion of the lower end of the left side wall 42L. The front lower wall 44 is inclined so as to gradually become lower toward the rear.

[0016] As shown in FIGS. 3 and 6, the cover body 40 has a lower opening 45 that opens downward. Specifically, the cover body 40 has a lower opening 45 surrounded by a pair of side walls 42R, 42L, a rear wall 43, and the lower edge of the front lower wall 44.

[0017] <Duct portion> As shown in FIGS. 3 to 6, two duct portions 50R, 50L are provided at intervals in the vehicle width direction X. The duct portions 50R, 50L are provided one on each side of the center of the cover body 40 in the vehicle width direction X. Each of the two duct portions 50R, 50L extends rearward starting from the lower end of the rear wall 43 of the cover body 40. Each duct portion 50R, 50L extends in a substantially U-shaped cross section with the lower part open. The duct portion 50R has a lower opening 53R that opens downward. The opening shape of the lower opening 53R is a shape that opens the entire lower part of the duct portion 50R. The duct portion 50L has a lower opening 53L that opens downward. The opening shape of the lower opening 53L is a shape that opens the entire lower part of the duct portion 50L. Each of the duct portions 50R, 50L communicates with the cover body 40.

[0018] The duct portion 50R on the right side includes an inclined portion 51R and a straight portion 52R. The inclined portion 51R extends obliquely rearward toward the right side, which is outward in the vehicle width direction X, starting from the lower end and the right end of the cover body 40. The straight portion 52R extends linearly in the front-rear direction Y starting from the rear end of the inclined portion 51R. The rear end of the straight portion 52R is arranged at a position inside the vehicle width direction X from the right tire house 21R, specifically, between the right tire house 21R and the power unit 12 in plan view.

[0019] The duct portion 50L on the left side includes an inclined portion 51L and a straight portion 52L. The inclined portion 51L extends obliquely rearward toward the left side, which is outward in the vehicle width direction X, starting from the lower end and the left end of the cover body 40. The straight portion 52L extends linearly in the front-rear direction Y starting from the rear end of the inclined portion 51L. The rear end of the straight portion 52L is arranged at a position inside the vehicle width direction X from the left tire house 21L, specifically, between the left tire house 21L and the power unit 12 in plan view.

[0020] In the present embodiment, the convex portion 431 of the rear wall 43 of the cover body 40 is located between the duct portion 50R on the right side and the duct portion 50L on the left side. <Air discharge port> As shown in FIGS. 1 and 6, the under cover 18 is provided with the air discharge ports 22R and 22L. The two air discharge ports 22R and 22L are provided at intervals in the vehicle width direction X. The air discharge ports 22R and 22L are provided one on each side of the center in the vehicle width direction X of the cover body 40 with the center in between.

[0021] The right air outlet 22R is shaped to open in a range including below the lower part of the right side of the cover body 40 and below the right duct part 50R, below the rear cover 30. Specifically, the part of the under cover 18 that constitutes the front edge of the air outlet 22R extends in the vehicle width direction X along the front end of the lower opening 45 of the cover body 40. The part of the under cover 18 that constitutes the right edge of the air outlet 22R extends in the front-rear direction Y along the right end of the duct part 50R. The part of the under cover 18 that constitutes the rear edge of the air outlet 22R extends in the vehicle width direction X along the rear end of the duct part 50R. The part of the under cover 18 that constitutes the left edge of the air outlet 22R extends in the front-rear direction Y at a position closer to the center in the vehicle width direction X than the duct part 50R.

[0022] The left air outlet 22L is shaped to open in a range including below the lower part of the left side of the cover body 40 and below the left duct part 50L, below the rear cover 30. Specifically, the part of the under cover 18 that constitutes the front edge of the air outlet 22L extends in the vehicle width direction X along the front end of the lower opening 45 of the cover body 40. The part of the under cover 18 that constitutes the left edge of the air outlet 22L extends in the front-rear direction Y along the left end of the duct part 50L. The part of the under cover 18 that constitutes the rear edge of the air outlet 22L extends in the vehicle width direction X along the rear end of the duct part 50L. The part of the under cover 18 that constitutes the right edge of the air outlet 22L extends in the front-rear direction Y at a position closer to the center in the vehicle width direction X than the duct part 50L.

[0023] In this embodiment, the closed part 181, which is the part sandwiched between the left and right air outlets 22R and 22L in the under cover 18, closes the part of the lower opening 45 of the cover body 40 that corresponds to the part between the left and right duct parts 50R and 50L. In this embodiment, the closed part 181 corresponds to the closing member.

[0024] <Operation of this Embodiment> Hereinafter, the operation of this embodiment will be described. As shown by arrow A1 in Fig. 2, when the vehicle 10 travels, air flows into the power chamber 11 through the opening 171 of the exterior member 17. Then, as shown by arrow A2 in Fig. 2, a part of the air that has flowed into the power chamber 11 passes through the radiator 13 and the radiator fan 14 and then enters the interior of the rear cover 30 that covers the rear of the radiator 13 and the radiator fan 14.

[0025] The air that has entered the rear cover 30 is blown against the rear wall 43 of the cover body 40. This rear wall 43 includes a convex portion 431 that extends in the vertical direction Z. Therefore, as shown by arrows B1 and B2 in Fig. 6, the air flow that has entered the interior of the rear cover 30 and is blown against the rear wall 43 is guided by the front surface of the convex portion 431 and is divided into a flow toward one side (right side) and a flow toward the other side (left side) in the vehicle width direction X.

[0026] As shown by arrow A3 in Fig. 2, the air that has entered the rear cover 30 is basically guided downward by the cover body 40 that opens forward and downward. Then, a part of the air that is guided downward is discharged to the outside of the rear cover 30 from the lower opening 45 (Fig. 6) of the cover body 40. This air is discharged to the outside of the vehicle 10, specifically, below the vehicle bottom surface 101, through the air discharge ports 22R and 22L (Fig. 6) of the under cover 18.

[0027] Also, as shown by arrow B1 in Figs. 2 and 6, a part of the air flow that is guided downward by the cover body 40 and is guided to the right by the convex portion 431 enters the right duct portion 50R at the lower end of the cover body 40. Then, the air that has entered the duct portion 50R is discharged to the outside of the rear cover 30 from the lower opening 53R of the duct portion 50R. This air is discharged to the outside of the vehicle 10, specifically, below the vehicle bottom surface 101, through the air discharge port 22R of the under cover 18.

[0028] Further, as indicated by arrow B2 in FIG. 6, a part of the air flow guided downward by the cover body 40 and guided to the left side in the cover body 40 by the convex portion 431 enters the left duct portion 50L at the lower end portion of the cover body 40. Then, the air that has entered the duct portion 50L is discharged to the outside of the rear cover 30 from the lower opening 53L of the duct portion 50L. This air is discharged to the outside of the vehicle 10 through the air discharge port 22L of the under cover 18, specifically, below the vehicle bottom surface 101.

[0029] Hereinafter, a vehicle in which the rear cover 30 does not include the duct portions 50R and 50L, the rear wall 43 of the cover body 40 is flat, and the under cover 18 does not have the closing portion 181 will be described as a vehicle of a comparative example. FIG. 7 shows a view of the first range AR1, the second range AR2, and the third range AR3 defined below the vehicle bottom surface 101 for the following description, as viewed from below the vehicle 10.

[0030] In the vehicle of the comparative example, the air guided downward by the rear cover is discharged concentratedly from the lower opening of the rear cover to below the vehicle bottom surface. Therefore, the air flow tends to concentrate behind the lower opening of the rear cover, particularly behind the vicinity of the center in the vehicle width direction X of the lower opening (the first range AR1 in FIG. 7). Therefore, in the vehicle of the comparative example, due to, for example, the occurrence of turbulence in the air flow in the first range AR1, the smooth air flow is hindered in the first range AR1 and behind the first range AR1 (for example, the second range AR2 in FIG. 7). In the vehicle of the comparative example, the air resistance thus increases.

[0031] On the other hand, in the vehicle 10 of the present embodiment, the rear cover 30 including the two duct portions 50R and 50L is adopted. Then, by the two duct portions 50R and 50L, the air that has passed through the radiator 13 and the radiator fan 14 is guided to mutually different positions spaced apart in the vehicle width direction X. The air thus guided is discharged separately from the positions spaced apart in the vehicle width direction X to the outside of the rear cover 30 and thus below the vehicle bottom surface 101.

[0032] As described above, in the vehicle 10 of this embodiment, the discharge of air from the inside of the rear cover 30 to the outside of the vehicle 10 (specifically, below the vehicle bottom surface 101) is not concentrated at one location, but is dispersed at a plurality of locations. As a result, it is possible to suppress a local increase in the flow pattern of the air discharged below the vehicle bottom surface 101. As a result, the generation of turbulence in the air flow near the air discharge ports 22R and 22L on the vehicle bottom surface 101 is suppressed. As a result, the air flows smoothly below the vehicle bottom surface 101, so that the air resistance of the vehicle 10 is reduced.

[0033] In addition, the following contents were confirmed from the results of various experiments and simulations by the inventors and the like. In the vehicle 10 of this embodiment, compared with the vehicle of the comparative example, the variation in the flow velocity of the air flowing below the vehicle bottom surface 101 is suppressed in a wide range (the third range AR3 in FIG. 7) below the vehicle bottom surface 101. As shown in FIG. 7, the third range AR3 is a range set between the left and right tire houses 21R and 21L below the vehicle bottom surface 101, and is also a range set in a portion from the vicinity of the rear end of the rear cover 30 to the vicinity of the rear end of the vehicle 10. Further, in the vehicle 10 of this embodiment, compared with the vehicle of the comparative example, the flow velocity of the air flowing below the vehicle bottom surface 101 becomes moderately high in substantially the entire area of the third range AR3. From these facts, it can be seen that in the vehicle 10 of this embodiment, compared with the vehicle of the comparative example, the air flow below the vehicle bottom surface 101 flows smoothly with its bias suppressed.

[0034] <Effects of this embodiment> Hereinafter, the effects of this embodiment will be described. (1) The front vehicle structure includes a radiator 13 provided at the front of the vehicle 10, and a rear cover 30 that is arranged to cover the rear of the radiator 13 and guides the air that has passed through the radiator 13 downward below the vehicle bottom surface 101. The rear cover 30 includes a cover body 40 and duct portions 50R, 50L. The cover body 40 covers the rear of the radiator 13 in an open state facing forward. The duct portions 50R, 50L communicate with the cover body 40, extend rearward from the rear wall 43 of the cover body 40, have their entire lower portions open downward, and are provided at intervals in the vehicle width direction X. According to this configuration, the air resistance of the vehicle 10 can be reduced.

[0035] (2) The duct portions 50R, 50L are provided one by one on both sides of the center of the cover body 40 in the vehicle width direction X. According to the above configuration, the air that has passed through the radiator 13 and the radiator fan 14 can be discharged separately to positions on the right side and the left side with respect to the lower side of the vehicle bottom surface 101, relative to the center of the cover body 40 in the vehicle width direction X. Therefore, the above air can be discharged while suppressing the bias in the vehicle width direction X with respect to the lower side of the vehicle bottom surface 101.

[0036] (3) The front surface of the portion (convex portion 431) corresponding to the two duct portions 50R, 50L on the rear wall 43 of the cover body 40 has a convex shape protruding forward and extending in the vertical direction Z.

[0037] According to the above configuration, the air flow blown against the rear wall 43 of the cover body 40 can be divided by the convex shape of the rear wall 43 into a flow toward the duct portion 50R on the right side and a flow toward the duct portion 50L on the left side. Therefore, the discharge of air from the inside of the rear cover 30 to the outside of the vehicle 10 can be preferably dispersed in the vehicle width direction X.

[0038] (4) Both of the duct portions 50R, 50L include inclined portions 51R, 51L that are portions extending obliquely rearward toward the outside in the vehicle width direction X. According to the above configuration, compared with the case where the entire duct portions 50R and 50L provided one by one on the left and right sides of the cover body 40 extend linearly in the front-rear direction Y, the rear ends of the two duct portions 50R and 50L can be arranged outward in the vehicle width direction X. Therefore, the discharge of air by the duct portions 50R and 50L on the left and right sides can be preferably dispersed in the vehicle width direction X.

[0039] (5) The rear ends of the duct portions 50R and 50L are arranged inside the vehicle width direction X with respect to the tire houses 21R and 21L of the vehicle 10. Below the vehicle bottom surface 101, particularly below and behind the tire houses 21R and 21L, the air flow is likely to be disturbed due to the rotation of the front wheels 20R and 20L inside the tire houses 21R and 21L. According to the above configuration, the discharge of air to the lower part of the vehicle bottom surface 101 is performed while avoiding the portions corresponding to the lower part and the rear part of the tire houses 21R and 21L, so that the generation of air flow disturbance near the air discharge ports 22R and 22L can be preferably suppressed.

[0040] (6) The duct portions 50R and 50L extend rearward from the lower end of the cover body 40 with the entire lower part in an open state. According to the above configuration, the air in the rear cover 30 can be discharged to the outside from the entire extending direction of the duct portions 50R and 50L including the rear end portions of the duct portions 50R and 50L. Thereby, the discharge of air from the inside to the outside of each duct portion 50R and 50L and the discharge of air to the lower part of the vehicle bottom surface 101 through the air discharge ports 22R and 22L can also be performed while being dispersed in the extending direction of the duct portions 50R and 50L. Therefore, the generation of air flow disturbance near the air discharge ports 22R and 22L can be preferably suppressed.

[0041] (7) The cover body 40 has a lower opening 45 that opens downward. The under cover 18 includes a closing portion 181 that closes the space between the adjacent duct portions 50R and 50L in the vehicle width direction X of the lower opening 45.

[0042] According to the above configuration, it is possible to suppress air from being discharged from a portion of the lower opening 45 of the cover body 40 that corresponds to the space between the adjacent duct portions 50R and 50L in the vehicle width direction X. Therefore, the air that has passed through the radiator 13 and the radiator fan 14 can be suitably divided and discharged to the duct portions 50R and 50L on the left and right sides, respectively.

[0043] <Modification example> Note that the above embodiment can be modified and implemented as follows. The above embodiment and the following modification examples can be implemented in combination with each other within a technically consistent range.

[0044] · Instead of using the closing portion 181 of the under cover 18 as a closing member, a portion integrally formed with the rear cover 30 and forming a part of the rear cover 30 may be used as the closing member, or a separate member fixed to the rear cover 30 may be used as the closing member.

[0045] · The closing member that closes the space between the adjacent duct portions 50R and 50L in the vehicle width direction X of the lower opening 45 of the cover body 40 may be omitted. For example, the closing portion 181 of the under cover 18 can be omitted. In this case, the air discharge ports 22R and 22L are formed by a single through hole.

[0046] · The front lower wall 44 of the rear cover 30 can be omitted. · As the rear cover 30, a structure in which the entire lower portion of the cover body 40 is closed can be adopted.

[0047] · In addition to arranging the rear ends of the duct portions 50R and 50L at positions sandwiched between the tire houses 21R and 21L and the power unit 12 in a plan view, the rear ends may be arranged inside the vehicle width direction X (i.e., on the power unit 12 side) from the same position.

[0048] · The rear ends of the duct portions 50R and 50L may be arranged so that the rear ends of the duct portions 50R and 50L overlap the tire houses 21R and 21L when viewed from the front. ·The duct portions 50R and 50L may be configured such that not only the entire lower portion is open, but also a part of the lower portion may be open. The duct portions 50R and 50L only need to have at least the lower portion of the rear end portion open.

[0049] ·The extending shape of the duct portions 50R and 50L can be arbitrarily changed as long as the duct portions 50R and 50L are arranged at intervals in the vehicle width direction X. For example, the duct portions 50R and 50L may be shaped to extend rearward starting from a portion inside both ends in the vehicle width direction X of the cover body 40. The duct portions 50R and 50L may be shaped to extend rearward starting from the middle portion in the vertical direction Z of the rear wall 43 of the cover body 40. Both of the duct portions 50R and 50L may be provided on the right side (or left side) of the center in the vehicle width direction X of the cover body 40. In addition, the duct portions 50R and 50L may be shaped such that the whole extends obliquely rearward toward the outside in the vehicle width direction X, or the whole extends linearly in the front-rear direction Y, or a part or all of them extends in a meandering shape, etc.

[0050] ·The rear cover 30 may have an asymmetric structure between the left and right. ·The shape of the air discharge ports 22R and 22L can be arbitrarily changed as long as it is a shape that opens at least below the rear end portion of the duct portions 50R and 50L.

[0051] ·The front surface of the portion corresponding to between the left and right duct portions 50R and 50L on the rear wall 43 of the cover body 40 is not limited to a convex shape protruding forward, and can be of any shape. For example, the entire front surface may be in a planar shape extending in the vehicle width direction X and the vertical direction Z, or a part of the front surface may be in a convex shape protruding rearward.

[0052] ·Not limited to providing two duct portions 50R and 50L, three or more duct portions may be provided at intervals in the vehicle width direction X. ·A rear cover provided with a connecting member that integrally connects adjacent duct portions in the vehicle width direction X, or a rear cover having a structure in which part or all of the extending directions of two duct portions are integrally connected can be adopted.

[0053] ·The vehicle front structure according to the above embodiment can also be applied to a vehicle such as a vehicle not provided with the under cover 18, that is, a vehicle in which the lower part of the engine room 11 is not covered by the under cover 18.

[0054] ·The vehicle front structure according to the above embodiment can also be applied to a vehicle not provided with the fan shroud 15. ·The vehicle front structure according to the above embodiment can be applied to various vehicles, such as a vehicle that runs with an internal combustion engine as a power source and a vehicle that runs with an internal combustion engine and an electric motor as power sources, as long as the vehicle is equipped with the radiator 13.

[0055] <Supplementary Note> The above embodiment includes the configuration described in the following supplementary note. [Supplementary Note 1] In a vehicle front structure including a radiator provided at the front of a vehicle and a rear cover arranged to cover the rear part of the radiator and guide the air that has passed through the radiator downward below the vehicle bottom surface, the rear cover includes a cover body and a duct portion. The cover body covers the rear part of the radiator in an open state facing forward, the duct portion communicates with the cover body, extends rearward from the rear wall of the cover body, and at least the rear end portion opens downward, and a plurality of them are provided at intervals in the vehicle width direction. Vehicle front structure.

[0056] [Supplementary Note 2] The duct portion is provided one on each side of the center in the vehicle width direction of the cover body. The vehicle front structure according to [Supplementary Note 1].

[0057] [Supplementary Note 3] The front surface of the portion corresponding to the space between the duct portions provided one by one on both sides of the rear wall of the cover body has a convex shape protruding forward and extending in the vertical direction, and the vehicle front structure according to [Appendix 2].

[0058] [Appendix 4] Both of the duct portions provided one by one on both sides include portions extending obliquely rearward toward the outside in the vehicle width direction, and the vehicle front structure according to [Appendix 2] or [Appendix 3].

[0059] [Appendix 5] The rear end of the duct portion is arranged inside the vehicle width direction rather than the tire house of the vehicle, and the vehicle front structure according to any one of [Appendix 1] to [Appendix 4].

[0060] [Appendix 6] The duct portion extends starting from the lower end of the cover body with the entire lower part being in an open state, and the vehicle front structure according to any one of [Appendix 1] to [Appendix 5].

[0061] [Appendix 7] The cover body has a lower opening that opens downward, and the vehicle front structure includes a closing member that closes the space between the adjacent duct portions in the vehicle width direction of the lower opening, and the vehicle front structure according to any one of [Appendix 1] to [Appendix 6].

Explanation of Signs

[0062] 10…Vehicle 101…Vehicle bottom surface 11…Power chamber 12…Power device 13…Radiator 14…Radiator fan 15…Fan shroud 16…Front hood 17…Exterior member 171…Opening 18…Under cover 181…Closing portion 19…Dash panel 20R, 20L… Front wheels 21R, 21L… Tire houses 22R, 22L… Air outlets 30… Rear cover 40… Cover body 41… Upper wall 42R, 42L… Side walls 43… Rear wall 431… Protrusion 44… Front lower wall 45… Lower opening 50R, 50L… Duct parts 51R, 51L… Inclined parts 52R, 52L… Straight parts 53R, 53L… Lower openings

Claims

1. A vehicle front structure including a radiator provided at a front portion of a vehicle, and a rear cover arranged to cover a rear portion of the radiator and to guide air that has passed through the radiator to a position below an underside of the vehicle, The rear cover includes a cover body and a duct portion. The cover body covers a rear portion of the radiator with an opening toward the front, The duct portion is connected to the cover body, extends rearward from the rear wall of the cover body, and at least a rear end portion thereof is open downward. The duct portion is provided in a plurality of portions spaced apart in the vehicle width direction, and extends from the lower end of the cover body with the entire lower portion being open. Vehicle front structure.

2. A vehicle front structure including a radiator provided at a front portion of a vehicle, and a rear cover arranged to cover a rear portion of the radiator and to guide air that has passed through the radiator to a position below an underside of the vehicle, The rear cover includes a cover body and a duct portion. The cover body covers a rear portion of the radiator with an opening facing forward, and has a lower opening facing downward, the duct portion is in communication with the cover body, extends rearward from a rear wall of the cover body, at least a rear end portion of the duct portion is open downward, and is provided in a plurality of portions spaced apart in the vehicle width direction; The vehicle front structure includes a blocking member that blocks a space between adjacent duct portions in the vehicle width direction in the lower opening. Vehicle front structure.

3. A vehicle front structure including a radiator provided at a front portion of a vehicle, and a rear cover arranged to cover a rear portion of the radiator and to guide air that has passed through the radiator to a position below an underside of the vehicle, The rear cover includes a cover body and a duct portion. The cover body covers a rear portion of the radiator with an opening toward the front, The duct portion is connected to the cover body, extends rearward from a rear wall of the cover body, and at least a rear end portion thereof opens downward. The duct portion is provided on each side of a center of the cover body in a vehicle width direction, Each of the rear ends of the duct portions provided on both sides is disposed inward of a tire house of the vehicle in the vehicle width direction, and at least a portion of the rear end is disposed outward of the radiator in the vehicle width direction. Vehicle front structure.

4. The duct portion is provided on each side of the center of the cover body in the vehicle width direction. The vehicle front structure according to claim 1 or 2.

5. The duct portion is provided on each side of the center of the cover body in the vehicle width direction, A front surface of a portion of the rear wall of the cover body between the duct portions provided on both sides has a convex shape that protrudes forward and extends in the up-down direction. The vehicle front structure according to any one of claims 1 to 3.

6. The duct portion is provided on each side of the center of the cover body in the vehicle width direction, Each of the duct portions provided on both sides includes a portion extending obliquely rearward toward the outside in the vehicle width direction. The vehicle front structure according to any one of claims 1 to 3.

7. A rear end of the duct portion is disposed inward in the vehicle width direction relative to a tire house of the vehicle. The vehicle front structure according to claim 1 or 2.

8. The duct portion extends from the lower end of the cover body with the entire lower portion open. The vehicle front structure according to claim 2 or 3.

9. The cover body has a lower opening that opens downward, The vehicle front structure includes a blocking member that blocks a space between adjacent duct portions in the vehicle width direction in the lower opening. The vehicle front structure according to claim 1 or 3.

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