Vehicle-body rear part structure

Abstract

To reduce air resistance when a vehicle travels, while securing the appearance design of a rear part of a vehicle body.SOLUTION: A vehicle-body rear part structure includes: a lid body 4 forming a part of a vehicle-body rear surface portion 2; a rear pillar 6 extending in a vertical direction along right and left ends-side portions of the lid body 4 and forming a part of a vehicle-body side surface portion 3 of a vehicle-body rear part; and a duct 10 having a duct inlet portion 11 configured to take in a traveling air flowing along an external surface of the vehicle-body side surface portion 3 in front of the rear pillar 6, and a duct outlet portion 12 configured to discharge the traveling air, which has passed through an inner part of the rear pillar 6, from the vehicle-body rear surface portion 2 on each of right and left sides thereof. The vehicle-body side surface portion 3 is provided with a side spoiler portion 30 protruding rearward from a vehicle-width outer part of the duct outlet portion 12 over a vertical width of the duct outlet portion 12. An external surface of the side spoiler portion 30 is provided so as to be smoothly continuous rearward from a rear end of the external surface of the vehicle-body side surface portion 3 and is formed at a rear narrowing angle larger than a rear narrowing angle in a horizontal cross section of the external surface of the vehicle-body side surface portion 3.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a rear vehicle structure comprising a cover body that forms part of the rear surface of the vehicle body, and a rear pillar that extends vertically along the left and right side edge portions of the cover body and forms part of the side surface portion of the rear of the vehicle body. [Background technology]

[0002] 11, the traveling winds Wu and Wd that flow along the surfaces of the roof and underfloor while the vehicle is moving and that separate from the rear ends of these surfaces gradually approach each other in the vertical direction toward the rear because the area between them becomes a negative pressure area. Similarly, the traveling winds Wl and Wr that separate from the rear ends of the surfaces of the left and right side parts of the vehicle while the vehicle is moving also flow gradually approach each other in the horizontal direction toward the rear.

[0003] In general, from the perspective of reducing air resistance while the vehicle is moving, it is considered ideal to have the traveling winds Wu, Wd, Wl, and Wr that leave the rear ends of the roof, under the vehicle floor, and the surfaces of the vehicle sides converge at a single point Pr like the rear end of a spindle at a predetermined distance behind the vehicle body, as shown in Figure 11.

[0004] Incidentally, as shown in Figure 11, the winds Wu and Wd that leave the rear ends of the surfaces of the roof and underfloor of the vehicle body while the vehicle is moving are more easily converged at a single point (Pr) at the rear of the vehicle body than before, due to the widespread use of roof spoilers and underfloor covers on SUVs. For this reason, it seems that aerodynamic measures for winds that leave the rear ends of the surfaces of the roof and underfloor have reached a stage of completion at the commercially available vehicle level.

[0005] However, in recent years, there has been a demand for further reductions in air resistance due to the need to extend the driving range of electric vehicles (EVs), etc. Therefore, in order to improve the aerodynamic performance of the outer surfaces of the left and right sides of the vehicle, it has been considered to equip both sides of the rear of the vehicle with roof side spoilers that protrude rearward in the same way as roof spoilers, but there are limitations in terms of exterior design when it comes to equipping such large roof side spoilers on both sides of the rear of the vehicle.

[0006] For this reason, as exemplified in Patent Document 1, for example, various measures have been taken to ensure that the exterior design of the rear of the vehicle body is maintained while ensuring that the wind coming from the wind passing through the vehicle body at a distance from the rear end of each outer surface of the left and right side portions of the vehicle body is more closely aligned at a single point at the rear of the vehicle body.

[0007] The vehicle side body structure of Patent Document 1 has an air passage body provided in a rear pillar arranged on the side of the rear of the vehicle body, the air passage body having an intake port that takes in running wind from the front of the vehicle and an exhaust port that exhausts the running wind taken in from the intake port to the rear of the vehicle, thereby forming an air duct as an air passage that connects the intake port and the exhaust port in the fore-and-aft direction between the air passage body and the outer rear pillar.

[0008] Here, after careful consideration, the inventors noticed that in order to concentrate the traveling wind flowing on the outer surface of the side portion of the vehicle body at a specified point at the rear of the vehicle body, it is effective to deflect the traveling wind toward the center of the vehicle body in a plan view as it leaves the rear end of the vehicle body.

[0009] In this regard, the side body structure of the above-mentioned Patent Document 1 is based on the technical idea of ​​making the traveling wind (air duct discharge flow) discharged rearward from the outlet of the air duct act as an air curtain in order to prevent the traveling wind flowing rearward along the outer surface of the air passage body on the side of the rear body from being drawn into the rear of the vehicle (generating turbulence). In other words, the side body structure of Patent Document 1 does not focus on the technical idea of ​​actively deflecting the traveling wind flowing rearward along the side portion of the vehicle body at the rear of the vehicle body toward the center of the vehicle body in a plan view when it separates from the rear end of the side portion of the vehicle body. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-126326 Summary of the Invention [Problem to be solved by the invention]

[0011] This invention has been made in consideration of these problems, and aims to provide a rear body structure that maintains the exterior design of the rear of the vehicle body while deflecting the rear end of the vehicle body toward the center of the vehicle body in a plan view, and by more closely aligning the wind at a specified point behind the vehicle body even when the wind is traveling away from the rear ends of the surfaces of the left and right side parts of the vehicle body, thereby further reducing air resistance. [Means for solving the problem]

[0012] This invention is a vehicle rear structure comprising: a cover body that forms a part of the rear body; a rear pillar that extends in the vertical direction along the left and right side edge portions of the cover body and forms a part of the side portion of the vehicle body at the rear of the vehicle body; and a duct forming member that has a duct inlet portion in front of the rear pillar that takes in running wind flowing along the outer surface of the side portion of the vehicle body, and a duct outlet portion that discharges running wind that has passed through the inside of the rear pillar from the left and right rear side portions of the vehicle body, and forms a duct that connects these duct inlet portion and duct outlet portion in the fore-and-aft direction of the vehicle, wherein a side spoiler is provided behind the duct forming member that protrudes rearward from a portion of the duct outlet portion that is outer in vehicle width and spans the vertical width of the duct outlet portion, and the outer surface of the side spoiler is provided so as to smoothly continue rearward from the rear end of the outer surface of the side portion of the vehicle body, and is formed at a rear tapering angle that is greater than the rear end angle (rear end angle) in a horizontal cross section of the outer surface of the side portion of the vehicle body.

[0013] According to this invention, it is possible to achieve both a reduction in air resistance while the vehicle is running and an appearance design for the rear of the vehicle body. In detail, while the vehicle is moving, the airflow (also referred to as the "side flow") flowing along the outer surface of the side portion of the vehicle body at the rear (the outer surface of the rear pillar) can be deflected significantly inward in the vehicle width direction by the side spoiler, which has a larger rear narrowing angle (also referred to as the "rear end angle") on the outer surface than the duct forming member, working together with the airflow discharged from the duct outlet portion.

[0014] Therefore, the wind generated by the vehicle (hereinafter also referred to as the "wake flow after the vehicle") away from the rear ends of the roof, under the vehicle floor, and the outer surfaces of the left and right sides of the vehicle can be concentrated at the spindle-shaped rear end, thereby further reducing air resistance while the vehicle is moving. Furthermore, the side spoiler can be prevented from becoming too large while the side flow can be significantly deflected inward in the vehicle width direction when it separates from the rear end of the side of the vehicle body, thereby maintaining the external design of the rear of the vehicle body.

[0015] As an aspect of the present invention, the rear tapered angle of the side spoiler may be set in a range of 25° or more and 29° or less. According to this invention, by setting the rear taper angle of the side spoiler within the above-mentioned range, the side flow can be significantly deflected inward in the vehicle width direction when it separates from the rear end of the side portion of the vehicle body in cooperation with the ejector effect of the air flow discharged from the duct outlet portion.

[0016] As another aspect of the present invention, the width of the duct in horizontal cross section may be set in the range of 6 mm to 40 mm. According to this invention, by setting the rearward tapering angle of the side spoiler within the above-mentioned range and setting the width of the duct in the horizontal cross section within the above-mentioned range, the wind direction of the side flow can be set to the desired inward angle when it separates from the rear end of the side portion of the vehicle body.

[0017] In another aspect of the present invention, a quarter window may be provided on the side of the vehicle body between the rear pillar and the rear end of the side door, the rear end of the quarter window extending in the fore-and-aft direction to the duct inlet, and the outer surface of the quarter window may be tilted rearward until its rear end is positioned at the inner end of the duct inlet in the vehicle width direction in a horizontal cross-sectional view.

[0018] According to this invention, the quarter window can be used as an air guide plate for actively taking the side airflow flowing along the vehicle body side portion into the duct inlet. Furthermore, by utilizing the quarter window without providing a separate air guide member, it is possible to ensure a long air guide section (inlet section) in the fore-and-aft direction while maintaining the appearance of the vehicle body side portion. In other words, the side airflow flowing rearward along the vehicle body side portion can be smoothly introduced into the duct inlet.

[0019] In another aspect of the present invention, the duct forming member may include a pillar duct forming member provided on the vehicle width outer side of the rear pillar outer so that the duct is formed between the rear pillar outer and the duct in the vehicle width direction in a horizontal cross section, and the side spoiler may be configured to protrude rearward from the rear end of the pillar duct forming member.

[0020] According to this invention, the pillar duct forming member can cooperate with a rear pillar outer member provided on the rear pillar to form a duct on the vehicle width direction outer side of the rear pillar outer member. This eliminates the need for processing, for example, to provide a through-hole for the duct in a pillar reinforcement or the like provided on the rear pillar. Furthermore, the pillar duct forming member can be integrally formed by molding or the like together with the side spoiler so as to be continuous in the fore-and-aft direction. This makes it possible to easily provide the duct inside the rear pillar while improving the aerodynamic performance of side flows. [Effects of the Invention]

[0021] According to the present invention, it is possible to provide a rear vehicle body structure that can reduce air resistance when the vehicle is traveling while maintaining the exterior design of the rear vehicle body. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is an external view of a rear body of a vehicle equipped with a rear body structure according to an embodiment of the present invention, viewed from the left rear. [Figure 2] Left side view of the rear of the vehicle shown in Figure 1 [Figure 3] A cross-sectional view showing the main part along the line AA in Figure 2. [Figure 4] FIG. 4 is an enlarged cross-sectional view showing the main part of FIG. 3. [Figure 5] An external view of the duct garnish of the vehicle shown in Figure 1 as seen from the front and outside in the vehicle width direction. [Figure 6] An enlarged external view of the rear of the vehicle shown in Figure 1, seen from the left rear. [Figure 7] FIG. 10 is a plan view showing the flow of wind along the outer surface of the vehicle body side portion at the rear of the vehicle body when the vehicle is traveling according to the present embodiment. [Figure 8] 1A is an enlarged left side view of a main part of a rear body of a vehicle equipped with a rear body structure according to a modified example, and FIG. 1B is a cross-sectional view showing the main part along line BB in FIG. [Figure 9] Graph showing the results of a simulation verifying the effectiveness of the rear body structure according to the modified example [Figure 10] FIG. 10 is a plan view showing the flow of wind along the outer surface of the side of the vehicle body at the rear of the vehicle when the vehicle is traveling in a conventional example. [Figure 11] This is an external view of the rear of a vehicle, seen from the left rear diagonal, to explain the ideal situation in which wind that has left the roof, under the floor, and the rear ends of the left and right sides of the vehicle gathers at a specified point away from the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a vehicle V equipped with the rear vehicle body structure of this embodiment is a hatchback-type passenger car having a flip-up lift gate 4 on a rear vehicle body portion 2. In the drawings, arrow F indicates the front of the vehicle body, arrow U indicates the upper side of the vehicle body, arrow OUT indicates the outer side in the vehicle width direction, and arrow IN indicates the inner side in the vehicle width direction. The left and right directions of the vehicle body are based on the passenger seated in the driver's seat. Furthermore, since the left and right vehicle body side portions 3 at the rear of the vehicle body in this embodiment have a symmetrical shape, the following description will be mainly based on the left vehicle body side portion 3.

[0024] As shown in Figure 3, the left and right rear body side portions 3 of the vehicle V in this embodiment are provided with intermediate pillars 8 and rear pillars 6, and these pillars 8, 6 extend in the vertical direction to form part of the rear body side portion 3 of the vehicle body and are arranged at a distance from each other in the longitudinal direction, and support the rear of the roof portion 7 (see Figure 1) that covers the upper part of the passenger compartment.

[0025] The intermediate pillar 8 is configured by joining and fixing an intermediate pillar outer part 8a and an intermediate pillar inner part 8b, and has an intermediate pillar closed cross section 8c extending in the vertical direction of the vehicle between them.

[0026] As shown in Figures 3 and 4, the rear pillar 6 includes a rear pillar main body portion 61 and a pillar duct forming portion 62. The pillar duct forming portion 62 is located further outward in the vehicle width direction than the outer surface of the rear pillar main body portion 61. A duct 10 extending in the front-to-rear direction of the vehicle is formed between the rear pillar main body portion 61 and the pillar duct forming portion 62. As shown in Figures 4 and 5, the front end of the duct 10 has a duct inlet portion 11 that takes in airflow flowing in front of the rear pillar 6 along the outer surface of the vehicle body side portion 3 (a quarter window 15, described later).

[0027] 4 and 6, the rear end of the duct 10 has a duct outlet portion 12 that discharges the traveling wind that has passed through the rear pillar 6 (i.e., the inside of the duct 10) from both the left and right sides of the vehicle body rear portion 2. That is, the duct 10 communicates the duct inlet portion 11 and the duct outlet portion 12 in the longitudinal direction of the vehicle. The pillar duct forming portion 62, the duct 10, the duct inlet portion 11 and the duct outlet portion 12 will be described later.

[0028] As shown in FIG. 4, the rear pillar main body portion 61 includes a rear pillar inner panel 6a, a rear pillar reinforcement 6b, and a rear pillar outer panel 6c. The rear pillar inner panel 6a and the rear pillar reinforcement 6b are joined to each other at their inner rear end flanges 6g, 6h located at the rear ends of their respective inner sides in the vehicle width direction. The rear pillar reinforcement 6b has a front end flange 6i joined to a midpoint of the rear pillar inner panel 6a in the fore-and-aft direction and the vehicle width direction. This forms a rear pillar closed cross section 6d extending in the vertical direction between the rear pillar inner panel 6a and the rear pillar reinforcement 6b.

[0029] The rear pillar outer panel 6c is a metal outer panel that is a non-decorative panel, and includes a pillar side surface outer panel 61c and a pillar side end edge outer panel 62c. The pillar side outer panel 61c is disposed outward in the vehicle width direction from the rear pillar inner panel 6a and the rear pillar reinforcement 6b. The left and right pillar side end edge outer panels 62c are disposed behind the rear pillar reinforcement 6b and form the left and right side edge edges of the rear opening of the passenger compartment (luggage compartment) in the rear body portion 2. The rear end 6j of the pillar side surface outer panel 61c and the outer end 6k in the vehicle width direction of the pillar side end edge outer panel 62c are joined together.

[0030] Furthermore, the pillar side end edge outer panel 62c has an inner flange portion 6l located on the inner side in the vehicle width direction joined to an inner rear end flange portion 6h of the rear pillar reinforcement 6b from the outer side in the vehicle width direction. Also, the pillar side surface outer panel 61c and the rear pillar inner panel 6a have front end flange portions 6n, 6p located at their respective front ends joined to each other.

[0031] As shown in Figures 1, 2, 5, and 6, the roof portion 7 includes a pair of left and right roof side rails 7a extending in the front-to-rear direction, a rear header (not shown) connecting the rear ends of the pair of roof side rails 7a, and a substantially rectangular roof panel 7c covering the entire area between the pair of roof side rails 7a from above.

[0032] The roof side rail 7a is configured by joining and fixing a roof side rail outer 7aa and a roof side rail inner (not shown), and this roof side rail 7a has a roof side closed cross section (not shown) extending in the front-rear direction of the vehicle.

[0033] The above-mentioned rear header (not shown) forms the upper edge of the rear opening of the passenger compartment (luggage compartment) at the rear body portion 2, and together with the above-mentioned roof panel 7c, forms a rear header closed cross-sectional portion (not shown) extending in the vehicle width direction.

[0034] As shown in Fig. 3, a door opening 14A in which a rear door 14 is disposed is formed between the intermediate pillar 8 (quarter pillar, C pillar) and a center pillar (B pillar) (not shown) disposed in front of and spaced apart from the intermediate pillar 8. The rear door 14 has its front end pivotally supported on the center pillar so that the door opening 14A can be opened and closed. As shown in Figs. 1 to 3, the rear door 14 is provided with a rear door glass 14a at its upper portion, and a door sash portion 14b at its rear end.

[0035] A quarter window 15 (also referred to as "quarter glass 15") is attached between the intermediate pillar 8 and the rear pillar 6 (D pillar). The quarter window 15 extends in a substantially straight line along the front-to-rear direction and is provided on the vehicle body side surface 3 between the rear pillar 6 and the door sash portion 14b of the rear door 14.

[0036] 3, a front end portion 15a of the quarter window 15 is joined to the intermediate pillar 8 from the outer side in the vehicle width direction. As shown in FIG. 3, the door sash portion 14b located at the rear end portion of the rear door glass 14a of the rear door 14 is located near the front side of the front end portion 15a of the quarter window 15 when the door is closed, and the outer surfaces of the two are arranged to be smoothly continuous in the front-to-rear direction.

[0037] 4, the rear end portion 15b of the quarter window 15 is joined from the outside in the vehicle width direction to the front end flange portion 6n of the pillar side surface outer panel 61c of the rear pillar 6. The pillar side surface outer panel 61c is disposed adjacent to and rearward of the rear end portion 15b of the quarter window 15, and the outer surfaces of the panels are disposed smoothly and continuously in the front-to-rear direction.

[0038] 3, the outer surface of the rear pillar main body 61 (the outer surface of the pillar side outer panel 61c) is located more inward in the vehicle width direction than the outer surface of the door sash 14b. Therefore, the quarter window 15 is gently tilted inward in the vehicle width direction from the front end 15a toward the rear until the rear end 15b is positioned at the inner end of the duct inlet 11 in the vehicle width direction in the horizontal cross section.

[0039] This allows the traveling wind flowing along the outer surface of the quarter window 15 in front of the rear pillar 6 to be actively introduced into the duct 10 from the duct inlet 11 by utilizing the property of the traveling wind flowing as if it is adhering to the outer surface of the vehicle body.

[0040] 1 and 2, a rear fender panel 13 is provided in the vehicle body side portion 3 at the rear of the vehicle body in a region below the quarter window 15 and the pillar side surface outer panel 61c, and is continuous along the rear pillar 6. That is, the lower ends of the quarter window 15 and the pillar side surface outer panel 61c are located in the belt line portion of the upper end of the rear fender panel 13, and the upper ends are located below the roof side rail 7a.

[0041] Next, the lift gate 4 will be described. Lift gate 4 is configured to be able to open and close a rear luggage compartment opening provided on vehicle rear body portion 2. As shown in Fig. 1, lift gate 4 includes a metal inner panel 4a (see Fig. 4), a metal outer panel 4b, a rear window glass 16, a synthetic resin roof spoiler 41, and side garnishes 42, and is generally curved forward as it extends upward in side view. Outer panel 4b forms the outer surface of lift gate 4 except for the upper end portion, and is equipped with the inner lamp portion of rear combination lamp 18, a rear wiper mechanism, etc.

[0042] As shown in Fig. 4, the left and right side edge portions 40 of the lift gate 4 are formed by joining and fixing a metal inner panel 4a and a metal outer panel 4b, with a closed cross section 4c extending in the vertical direction of the vehicle between these panels 4a, 4b. As shown in Fig. 3, trims 34a, 34b, and 34c serving as interior members are provided on the interior sides of the intermediate pillar 8, rear pillar 6, and side edge portions 40 of the lift gate 4, respectively. The side edge portions 40 form both the left and right sides of the rear body portion 2 and also form the rear end portions of the side body portions 3.

[0043] 1 and 4, side garnishes 42 are attached along the left and right side edge portions 40 of the metal outer panel 4b on both the left and right side edge portions 40 of the lift gate 4. High-mount stop lamps (not shown) that light up in synchronization with the stop lamps of the rear combination lamp 18 are provided at the rear of the side garnishes 42 and the roof spoiler 41, as shown in FIG.

[0044] The side garnish 42 is attached via a grommet to the rear surface of the metal outer panel 4b of the side edge portion 40 of the lift gate 4. The outer surface of the side garnish 42 is smoothly continuous with the outer surface of the pillar side outer panel 61c when the lift gate 4 is closed. The rear pillar 6 described above extends in the vertical direction along the side edge portion 40 of the lift gate 4 so as to form, together with the side edge portion 40 of the lift gate 4, a part of the vehicle body side portion 3 at the rear of the vehicle body.

[0045] 1, the roof spoiler 41 cooperates with the outer panel 4b to form part of the outer surface of the lift gate 4 so as to cover the upper end portion of the rear window glass 16. The roof spoiler 41 is formed in a substantially horizontal shape and protrudes rearward from the rear end of the roof panel 7c in a side view.

[0046] 1 and 6, both left and right ends of the roof spoiler 41 are formed in a generally downward curve along extensions of the left and right ends of the roof side rails 7a when viewed from the rear of the vehicle. Furthermore, as shown in FIGS. 1 and 2, the rear end of the roof spoiler 41 extending in the vehicle width direction has a central portion disposed furthest rearward compared to the left and right end portions. The upper surface of the roof spoiler 41 extends rearward at roughly the same height as the upper surface of the roof panel 7c without forming an angle with the upper surface.

[0047] As shown in Figures 1 to 6, the left and right vehicle body side sections 3 at the rear of the vehicle body are provided with duct garnishes 20 that deflect the running wind flowing along the outer surface of the vehicle body side sections 3 toward the inside in the vehicle width direction at the rear end of the vehicle body side sections 3.

[0048] The duct garnish 20 is formed by hollow blow molding using synthetic resin to have an appropriate thickness in the vehicle width direction, and is a plate-shaped member that extends in the vertical and longitudinal directions, and is integrally formed with the pillar duct forming portion 62 and the side spoiler portion 30.

[0049] 4, the pillar duct forming portion 62 extends rearward beyond the rear end portion of the rear pillar main body portion 61, i.e., the rear end portion 6j of the pillar side outer panel 61c. More specifically, the pillar duct forming portion 62 extends rearward until its rear end portion 62a substantially coincides with the rear end portion of the side edge portion 40 of the lift gate 4, which is disposed adjacent to and rearward of the rear pillar main body portion 61, i.e., the rear end portion 42a of the side garnish 42, in the vehicle longitudinal direction.

[0050] Accordingly, as shown in FIG. 4, in horizontal cross section, the duct 10 is formed substantially continuously in the front-to-rear direction not only between the pillar duct forming portion 62 and the rear pillar main body portion 61, but also between the pillar duct forming portion 62 and the side edge portion 40 of the lift gate 4, more specifically, the side garnish 42.

[0051] That is, the duct outlet 12 located at the rear end of the duct 10 is provided at the same position in the front-rear direction as the rear end 42a of the side garnish 42 (see FIG. 4). Also, as shown in FIG. 4, the width w10 of the horizontal cross section of the duct 10, particularly the width w10 at the duct inlet 11, is set to approximately 34 mm, which is within the range of 6 mm to 40 mm.

[0052] As shown in Fig. 5, the duct 10 is formed in a vertical intermediate region 92m of the pillar duct forming portion 62. In the pillar duct forming portion 62, a duct upper wall portion 10a that defines the upper surface of the duct 10 and a duct lower wall portion 10b that defines the lower surface of the duct 10 are formed continuously along the front-rear direction at each of the upper and lower side ends of the intermediate region 92m. Both the duct upper wall portion 10a and the duct lower wall portion 10b are formed over the entire length of the pillar duct forming portion 62 in the front-rear direction, and as shown in Fig. 4, are formed in a rib-like shape that protrudes inward in the vehicle width direction from the inner surface (back surface) of the pillar duct forming portion 62 until they abut against the outer surfaces of the pillar side surface outer panel 61c and the side garnish 42 that face each other in the vehicle width direction.

[0053] As shown in FIGS. 4 and 5, the duct garnish 20 has a pillar duct forming portion 62 attached to a metal pillar side outer panel 61c via a grommet 26 from the outside in the vehicle width direction. In detail, the pillar duct forming portion 62 is formed hollow with an upper region 92a (see Figure 5) and a lower region 92b (see Figure 5) relative to the duct 10, and has a vehicle width direction inner wall portion 23 (see Figure 4) and a vehicle width direction outer wall portion 24 (see Figure 4), and a plurality of grommet mounting portions 25 (see Figure 5) are provided at intervals in the fore-and-aft direction on the vehicle width direction inner wall portion 23.

[0054] As shown in Figure 4, the grommet 26 attached to the grommet mounting portion 25 is fitted into a through hole (not shown) provided in the pillar side outer panel 61c at the portion opposite the grommet mounting portion 25, thereby attaching the duct garnish 20 to the pillar side outer panel 61c so that a duct 10 is formed between the two members 20, 61c. As shown in FIG. 5, in this embodiment, the duct 10 is formed with approximately the same vertical width in the front-to-rear direction in the middle region 92m obtained by dividing the pillar duct forming portion 62 into three equal parts in the vertical direction. However, this is not limited to this, and the vertical width may be changed at an intermediate portion of the path along the front-to-rear direction, or the path direction may be changed up and down.

[0055] 4, the side spoiler portion 30 protrudes rearward from a rear end portion 62a of the pillar duct forming portion 62, which corresponds to the outer side portion of the duct outlet portion 12 in the vehicle width direction, across at least the entire vertical width of the duct outlet portion 12. Note that, as shown in FIG. 1, the side spoiler portion 30 of this embodiment is formed across the entire vertical width of the pillar duct forming portion 62.

[0056] 1, 2, 5, and 6, both left and right end portions 41b of the roof spoiler 41 protrude outward and downward in the vehicle width direction until their lower surfaces abut against the upper end portions 30d of the side spoiler portions 30. The rear end portions 41c, 30a of the roof spoiler 41 and the side spoiler portions 30 coincide in the vehicle fore-and-aft direction, forming smooth rear end portions that are continuous in the up-and-down direction when viewed from the side of the vehicle.

[0057] As shown in the horizontal cross section of Figure 4, the outer surface of the side spoiler portion 30 is provided so as to continue rearward from the outer surface of the pillar duct forming portion 62 that forms part of the outer surface of the body side portion 3 at the rear of the vehicle body, and is smoothly formed so that it is gradually positioned more inward in the vehicle width direction as it goes rearward.

[0058] 4, a tangent line L30a to the rear end 30a of the outer surface of the side spoiler portion 30 is formed so as to be inclined with respect to the front-to-rear direction so as to be positioned more inward in the vehicle width direction as it approaches the rear. The angle α30 of the tangent line L30a of the rear end 30a of the outer surface of the side spoiler portion 30 with respect to the front-to-rear direction is defined as the rear tapering angle α30 (also referred to as the "rear end angle") of the outer surface of the side spoiler portion 30 in the horizontal cross section.

[0059] 4, the tangent line L62a to the rear end portion 62a of the outer surface of the vehicle body side portion 3 at the rear of the vehicle body, i.e., the rear end portion 62a of the outer surface of the pillar duct forming portion 62 in this example, is also formed to be inclined with respect to the front-to-rear direction so as to be positioned more inward in the vehicle width direction as it goes rearward in the horizontal cross section. The angle α62 of the tangent line L62a of the rear end portion 62a of the outer surface of such pillar duct forming portion 62 with respect to the front-to-rear direction is defined as the rear tapering angle α62 of the outer surface of the pillar duct forming portion 62 in the horizontal cross section.

[0060] The outer surface of the side spoiler portion 30 is formed to have a rear narrowing angle α30 that is larger than the rear narrowing angle α62 of the outer surface of the pillar duct forming portion 62 in a horizontal cross section. In this embodiment, the rear narrowing angle α62 in the horizontal cross section of the outer surface of the pillar duct forming portion 62 is 19 degrees, while the rear narrowing angle α30 in the horizontal cross section of the outer surface of the side spoiler portion 30 is set to 25 degrees in the range of 25 degrees or more and 29 degrees or less.

[0061] As shown in Figures 1 to 6, particularly Figure 3, the rear vehicle body structure of this embodiment described above includes a lift gate 4 (lid body) that forms part of the rear vehicle body portion 2, a rear pillar 6 that extends in the vertical direction along the left and right side edge portions of the lift gate 4 and forms part of the vehicle body side portion 3 at the rear of the vehicle body, and a pillar duct forming portion 62 as a duct forming portion provided on the outer side of the rear pillar main body portion 61 in the vehicle width direction so that a duct 10 is formed between the rear pillar main body portion 61 and the pillar duct forming portion 62 in the vehicle width direction in a horizontal cross section.

[0062] 3 and 4, the duct 10 has a duct inlet portion 11 that takes in the traveling wind flowing along a quarter window 15 that is in front of the rear pillar 6 and forms part of the outer surface of the vehicle body side portion 3, and a duct outlet portion 12 that discharges the taken in traveling wind (see W10 in FIG. 3) from the vehicle body rear portion 2. Furthermore, the duct 10 communicates the duct inlet portion 11 and the duct outlet portion 12 in the longitudinal direction of the vehicle.

[0063] As shown in FIG. 4, the rear end 62a of the pillar duct forming portion 62 is located at the outer side of the vehicle width of the duct outlet portion 12, and furthermore, a side spoiler portion 30 is provided behind the pillar duct forming portion 62, protruding rearward from the rear end 62a of the pillar duct forming portion 62 across the vertical width of the duct outlet portion 12.

[0064] As shown in FIG. 4, the vehicle rear structure of this embodiment is characterized in that the outer surface of the side spoiler portion 30 is provided so as to smoothly continue rearward from the rear end portion 62a of the outer surface of the pillar duct forming portion 62 that forms part of the vehicle side portion 3, and is formed at a rear tapering angle α30 that is larger than the rear tapering angle α62 in the horizontal cross section of the outer surface of the pillar duct forming portion 62.

[0065] According to the above configuration, it is possible to achieve both a reduction in air resistance while the vehicle is moving and an appearance design for the rear of the vehicle body. Specifically, while the vehicle is moving, the wind (hereinafter also referred to as "side flow W3") flowing along the vehicle body side portion 3 at the rear of the vehicle body (see Figure 3) can be deflected toward the center of the vehicle width direction when it separates from the side spoiler portion 30.

[0066] Furthermore, the running wind discharged from the duct outlet 12 (hereinafter also referred to as "flow W10r after passing through the duct") (see FIG. 3) has a faster flow velocity than the side flow W3, and can exert an ejector effect (suction effect) that draws the wind inward in a plan view. This ejector effect can promote the inward deflection in a plan view of the side flow W3r (hereinafter also referred to as "flow W3r after passing through the side") (see FIG. 3) that passes through the rear end 30a of the side spoiler portion 30 (in other words, separates from the rear end 30a) and flows toward the rear of the vehicle.

[0067] In other words, the side spoiler section 30, which is formed with a rear narrowing angle α30 larger than the rear narrowing angle α62 of the pillar duct forming section 62, and the duct-passing wake W10r work together to significantly deflect the side-passing wake W3r inward in the vehicle width direction.

[0068] Therefore, the traveling wind (hereinafter also referred to as "wake flow after passing the vehicle body") that has left the rear end of each surface of the roof portion 7, under the vehicle body floor, and side surface of the vehicle body 3 can be concentrated at the rear end of the spindle shape. Additionally, the point where the left and right side wake W3r converge at the rear of the vehicle body can be made to coincide with the point where the traveling wind leaving the rear end of the upper surface of the roof spoiler 41 (hereinafter also referred to as the "roof surface wake") and the traveling wind leaving the rear end of the underfloor surface of the vehicle body (hereinafter also referred to as the "underfloor surface wake") converge at the rear of the vehicle body, thereby further reducing air resistance while the vehicle is moving.

[0069] Here, Figure 7 is a plan view showing, with bold lines, the side flow W3 and the side-passage wake W3r when the vehicle of this embodiment is running, and Figure 10 is a plan view showing, with bold lines, the side flow W300 and the side-passage wake W300r when a conventional vehicle not equipped with the duct 10 and the side spoiler section 30 is running.

[0070] As shown in FIG. 7, in the vehicle of this embodiment, the duct wake W10r, shown by the imaginary line, acts to pull the side wake W3r toward the inside in the vehicle width direction (ejector effect) (see the white arrow in FIG. 7), and it can be seen that the side wake W3r is significantly deflected toward the inside in the vehicle width direction compared to the side wake W300r in the conventional vehicle shown in FIG. 10.

[0071] Furthermore, in the vehicle of this embodiment, as described above, the side spoiler portion 30 alone does not deflect the side flow W3 inward in the vehicle width direction, but rather cooperates with the duct-passing wake W10r to significantly deflect the side-passing wake W3r inward in the vehicle width direction, thereby preventing the side spoiler portion 30 from becoming large and maintaining the appearance design of the rear of the vehicle body. In addition, the side spoiler portion 30 can be easily attached to the vehicle body, and the rear view of the occupants through the rear window 16 is not obstructed by the side spoiler portion 30, so good rear view can be maintained.

[0072] Furthermore, when forming the duct 10 inside the rear pillar 6, as in this embodiment, by providing a pillar duct forming portion 62 that forms the duct 10 in cooperation with the rear pillar main body portion 61 on the vehicle width direction outer side of the rear pillar main body portion 61 (see Figure 4), there is no need to perform processing such as providing a through hole to form the duct 10 in, for example, the metal rear pillar inner member 6a, the metal rear pillar reinforcement 6b, or the metal rear pillar outer panel 6c provided on the rear pillar main body portion 61.

[0073] That is, the pillar duct forming portion 62 can be integrally formed by resin molding or the like so as to be continuous in the front-to-rear direction together with the side spoiler portion 30 as part of the duct garnish 20. Therefore, the pillar duct forming portion 62 itself and the duct 10 can be easily provided while improving the aerodynamic performance of the side flow W3.

[0074] In one embodiment of the present invention, as shown in FIG. 4, the rear narrowing angle α30 of the outer surface of the side spoiler portion 30 is set in the range of 25° to 29°. According to the above configuration, by setting the rear narrowing angle α30 of the side spoiler portion 30 within the above-mentioned range, the side surface downstream flow W3r can be significantly deflected inward in the vehicle width direction in cooperation with the ejector effect of the duct downstream flow W10r.

[0075] In one embodiment of the present invention, as shown in FIG. 4, the width w10 of the horizontal cross section of the duct 10 is set in the range of 6 mm or more and 40 mm or less. According to the above configuration, by setting the rear narrowing angle α30 of the side spoiler portion 30 within the above-mentioned range and setting the width w10 of the horizontal cross section of the duct 10 within the above-mentioned range, the wind direction of the wake W3r after passing through the side surface can be set to a desired inward angle.

[0076] As an embodiment of the present invention, as shown in FIG. 3, a quarter window 15 is provided between the rear end of the door sash portion 14b of the rear door 14 and the duct inlet 11, along the vehicle body side surface 3 in front of the rear pillar 6, and the outer surface of the quarter window 15 is inclined inward toward the rear until the rear end 15b is positioned at the inner end of the duct inlet 11 in the vehicle width direction in a horizontal cross section.

[0077] According to this configuration, the quarter window 15 can be used as an air guide plate for actively taking in part of the side flow W3 into the duct inlet 11. This makes it possible to ensure a sufficiently long air guide section (approach section) in the fore-and-aft direction of the vehicle for actively taking in part of the side flow W3 into the duct inlet 11 without providing a separate air guide member, while maintaining the appearance of the vehicle body side section 3.

[0078] Furthermore, as described above, by ensuring that the wind guidance section (approach section) of the quarter window 15 has a long distance in the vehicle longitudinal direction, the inclination that is positioned inward in the vehicle width direction can be set to be gentler toward the rear. This allows the side flow W3 to flow stably toward the rear of the vehicle along the outer surface of the quarter window 15, and also makes it possible to actively take the side flow W3 into the duct inlet 11 by taking advantage of the tendency of the side flow W3 to flow as if adhering to the outer surface of the vehicle body side portion 3.

[0079] In the configuration of this invention and the correspondence with the above-mentioned embodiment, the lid body corresponds to the lift gate 4, and similarly, The side spoiler corresponds to the side spoiler part 30, The pillar duct forming member corresponds to the pillar duct forming portion 62, but the present invention is not limited to the configuration of the above-described embodiment, and many other embodiments can be obtained.

[0080] For example, the present invention is not limited to the vehicle rear body structures of the above-described embodiments, but may be configured as modified vehicle rear body structures as shown in FIGS. 8(a) and 8(b). The vehicle rear structure according to the modified example will be described with reference to Figures 8(a) and 8(b). However, the same components as those in the vehicle rear structure according to the above-described embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

[0081] The modified rear body structure does not have the duct garnish 20, i.e., the pillar duct forming portion 62, on the vehicle width direction outer side of the rear pillar 6, as in the present embodiment shown in Figure 4, and instead has a duct 10A formed to penetrate from the rear pillar 6A to the side edge portion 40 of the lift gate 4, as shown in Figure 8(b).

[0082] The modified duct 10A comprises a pillar duct 101A arranged to pass through the interior of the rear pillar 6A from front to rear, and a side edge duct 102A arranged to pass through the interior of the side edge portion 40 from front to rear, and is formed so that when the lift gate 4 is closed, the outlet portion 101Aa at the rear end of the pillar duct 101A and the inlet portion 102Ab at the front end of the side edge duct 102A are connected from front to rear.

[0083] The pillar duct 101A is held in a state where it is inserted through a through-hole 6r (only the through-hole 6r in the pillar side end edge outer panel 62c is shown) formed through the rear pillar outer panel 6c. The side end edge duct 102A is held in a state where it is inserted through a through-hole 4g ​​formed through each of the metal inner panel 4a and the metal outer panel 4b.

[0084] Although not shown, the duct inlet of the modified duct 10A is provided in the front of the pillar side outer panel 61c. On the other hand, as shown in Fig. 8(b), the duct outlet 12A is provided in the lift gate 4 between the side edge duct 102A and the rear window glass 16 in a horizontal cross section.

[0085] 8(a) and 8(b), a side spoiler portion 30A is provided at the vehicle width outer side portion of the duct outlet portion 12A instead of the above-mentioned side garnish 42 (see FIG. 4). As shown in FIG. 8(b), the side spoiler portion 30A is integrally formed by resin molding of a spoiler base portion 301A provided at a position corresponding to the side garnish 42 and a rearward protruding portion 302A protruding rearward from a rear end portion 301Aa of the spoiler base portion 301A across the vertical width of the duct outlet portion 12.

[0086] The outer surface of the side spoiler portion 30A is provided so as to smoothly continue rearward from the rear end of the pillar side outer panel 61c, and is provided so as to be positioned further inward in the vehicle width direction as it approaches the rear of the vehicle.

[0087] Here, the rear end 301Aa of the spoiler base 301A of the side spoiler portion 30A is located at the vehicle width outer side portion of the duct outlet portion 12A, and is also located at the rear end of the vehicle body side surface portion 3 at the rear of the vehicle body. Therefore, the rear tapering angle α301A of the vehicle body side surface portion 3 at the rear of the vehicle body in the modified example indicates the rear tapering angle in a horizontal cross section of the outer surface of the spoiler base 301A, and more specifically, indicates the angle of the tangent line L301A of the rear end 301Aa of the outer surface of the spoiler base 301A of the side spoiler portion 30A with respect to the longitudinal direction.

[0088] In addition, the rearward narrowing angle α302A in the horizontal cross section of the outer surface of the modified side spoiler portion 30A indicates the angle of the tangent L302A of the rear end portion 302Aa of the outer surface of the rearward protruding portion 302A of the side spoiler portion 30A relative to the fore-and-aft direction, and indicates the rearward narrowing angle in the horizontal cross section of the outer surface of the rearward protruding portion 302A.

[0089] In this modification, the rear narrowing angle α301A of the outer surface of the spoiler base 301A is set to 19 degrees. In contrast to this, in this modification, the rear narrowing angle α302A of the outer surface of the rearward protruding portion 302A is set to 25 degrees in the range of 25 degrees or more and 29 degrees or less.

[0090] FIG. 9 is a graph showing the results of a simulation conducted to verify the inward deflection angle in a horizontal cross section of the wake after the rear end of the body side portion 3 at the rear of the vehicle body while the vehicle is traveling, for an example of the invention relating to a modified rear body structure or an accompanying structure included in the present invention, as well as a comparative example and a conventional example.

[0091] Specifically, Fig. 9 is a graph showing the relationship between the horizontal width w10 of the duct 10A and the inward angle of the wake W3r after passing through the side surface, depending on whether or not the side spoiler 30A is provided, and for three different rear tapering angles when the side spoiler 30A is provided. That is, the horizontal axis in Fig. 9 represents the horizontal width w10 of the duct 10A, and the vertical axis in Fig. 9 represents the inward angle of the wake W3r after passing through the side surface.

[0092] The area Rd enclosed by the dashed line in Fig. 9 is the area that should contain the simulation results obtained when simulating the rear body structure of the present invention. The ideal inward deflection angle is 15 degrees.

[0093] In the conventional example in which the duct 10A and the rearward protruding portion 302A of the side spoiler portion 30A were not provided, the results were shown by plot Paa in Fig. 9. In contrast to this conventional example, the conventional example in which the duct 10A was provided had the results shown by plots Pab and Pac in Fig. 9, corresponding to horizontal widths w10 of the duct 10A of 17 mm and 34 mm, respectively. That is, as shown in Fig. 9, the conventional examples corresponding to plots Pab and Pac both had improved inward deflection angles of the side passage wake W3r compared to the conventional example corresponding to plot Paa in Fig. 9, but in both conventional examples the inward deflection angles were below 8 degrees, falling outside the range Rd.

[0094] Furthermore, in the conventional example in which the rear narrowing angle of the side spoiler portion was set to 25 degrees but the duct 10A was not provided, the results were as shown by plot Pba in Fig. 9. That is, as shown in Fig. 9, in the conventional example corresponding to plot Pba, the inward deflection angle of the side passage wake W3r was less than 8 degrees, falling outside the range of region Rd.

[0095] In contrast to the conventional example corresponding to plot Pba, in the inventive examples with the duct 10A, the results were as shown by plots Pbb and Pbc in Fig. 9, corresponding to horizontal widths w10 of duct 10A of 17 mm and 34 mm, respectively. That is, as shown in Fig. 9, in the inventive examples corresponding to plots Pbb and Pbc, the inward deflection angle of the wake W3r after side passage was improved compared to the conventional example corresponding to plot Pba, exceeding 8 degrees.

[0096] Furthermore, in a comparative example in which the rear tapering angle of the side spoiler portion was set to 29 degrees without the duct 10A, the result was as shown by plot Pca in Fig. 9. That is, as shown in Fig. 9, in the comparative example corresponding to plot Pca, the inward deflection angle of the side passage wake W3r exceeded 8 degrees. Note that when the rear tapering angle α302A' of the outer surface of the side spoiler portion is 29 degrees as in the comparative example, this shows the angle relative to the longitudinal direction of a tangent L302A' to a rear end portion 302a' of the outer surface of the side spoiler portion 30A that is equipped with a rearward protruding portion 302A' as shown by the dashed dotted line in Fig. 8.

[0097] Furthermore, in contrast to the comparative example corresponding to the plot Pca, the examples of the invention in which the duct 10A was provided had the results shown by the plots Pcb and Pcc in Fig. 9, corresponding to the horizontal width w10 of the duct 10A being 17 mm and 34 mm, respectively. That is, as shown in Fig. 9, the examples of the invention corresponding to the plots Pcb and Pcc each had an improved inward deflection angle of the wake W3r after side passage compared to the comparative example, exceeding the ideal value of 15 degrees.

[0098] From the results shown in Figure 9 above, it was confirmed that the side spoiler section 30A, which has a larger rear taper angle than conventional side spoiler sections, and the duct-passing wake W10r work together to significantly deflect the side-passing wake W3r inward in the vehicle width direction while the vehicle is moving.

[0099] In particular, from the results of plots Pbb and Pbc in Figure 9, it was confirmed that the inward deflection angle of the side passage wake W3r can be significantly improved compared to the conventional example corresponding to plot Pba, even while the rearward narrowing angle α302A (rearward extension length of the rearward protrusion 302A) of the side spoiler section 30A is made smaller than the rearward narrowing angle α302A'.

[0100] Specifically, as shown in Fig. 8, as the rearward tapering angle of the outer surface of the side spoiler portion increases, the rearward protrusion length of the rearward protrusion portion 302A of the side spoiler portion 30A tends to increase (see rearward protrusions 302A, 302A' in Fig. 8). Therefore, by reducing the rearward tapering angle α302A (25 degrees) of the side spoiler portion compared to the rearward tapering angle α302A' (29 degrees) of the side spoiler portion of the example corresponding to plots Pcb and Pcc in Fig. 9, as in the example corresponding to plots Pbb and Pbc in Fig. 9, it is possible to prevent the side spoiler portion 30A from becoming larger (the rearward protrusion length of the rearward protrusion portion 302A), thereby ensuring the appearance design of the vehicle body rear surface portion 2 and ease of attachment to the vehicle body.

[0101] Furthermore, from the results of the plots Pbb, Pbc, Pcb, and Pcc in Figure 8, it was confirmed that the inward deflection angle of the side passage wake W3r is improved when the horizontal width w10 of the duct 10A is 34 mm compared to when it is 17 mm. In this simulation, the vehicle was set to travel at a constant speed of 140 kph. Under these conditions, when the horizontal width w10 of duct 10A was set to 17 mm, the wind speed at the duct inlet (not shown) was 40 kph and the wind speed at the duct outlet 12A was 55 kph. In contrast, when the horizontal width w10 of duct 10A was set to 34 mm, the wind speeds at both the duct inlet and duct outlet 12A were 76 kph.

[0102] These results suggest that a wider horizontal width w10 of duct 10A increases the amount of air that can be taken into duct 10A from duct inlet 11, improving the flow velocity of the road airflow flowing inside duct 10A and, as a result, improving the flow velocity of the wake W10r after passing through the duct. In other words, this result is consistent with the observation that an improvement in the velocity of the wake W10r after passing through the duct improves the function of pulling the wake W3r after passing through the side of the vehicle inward in the width direction (ejector effect).

[0103] In the correspondence between the configuration of the present invention and the above-mentioned modified examples, the side spoiler corresponds to the side spoiler portion 30A, and the duct forming member corresponds to the pillar duct 101A and the side edge portion duct 102A.

[0104] The vehicle rear structure of the present invention also includes a configuration in which the vehicle side surface 3 at the rear of the vehicle is provided with a quarter window 15 and an intermediate pillar 8. It also includes a case in which the rear door 14 is a sashless door that does not have a door sash portion 14b at its rear end. [Explanation of symbols]

[0105] V...Rear body structure 2...Rear part of the vehicle 3...Side of the vehicle 4...Lift gate (lid) 6,6A...Rear pillar 10,10A...Duct 11...Duct inlet 12, 12A...Duct outlet 15...Quarter window 30, 30A...Side spoiler part (side spoiler) 40...Side edge 62... Pillar duct forming portion (duct forming member, pillar duct forming member) 101A... Pillar duct (duct forming member) 102A...Side edge duct (duct forming member) α30, α302A, α302A'... Rear narrowing angle of the outer surface of the side spoiler α62... Rear draw angle of the outer surface of the body side part 3 w10: Width of the duct at horizontal cross section

Claims

1. a cover body that forms a part of the rear surface of the vehicle body; rear pillars extending in the vertical direction along the left and right side edge portions of the cover body and forming part of the vehicle body side surface portion at the rear of the vehicle body; a duct forming member that forms a duct that connects the duct inlet portion and the duct outlet portion in a longitudinal direction of the vehicle, the duct inlet portion having a duct inlet that takes in traveling wind flowing along an outer surface of the side surface of the vehicle body in front of the rear pillar and the duct outlet portion that discharges traveling wind that has passed through the inside of the rear pillar from the left and right rear surface portions of the vehicle body, a side spoiler is provided behind the duct forming member, the side spoiler protruding rearward from a vehicle width outer side portion of the duct outlet portion across a vertical width of the duct outlet portion; The outer surface of the side spoiler is formed so as to smoothly continue rearward from the rear end of the outer surface of the vehicle body side portion, and is formed at a rear taper angle that is larger than the rear taper angle in a horizontal cross section of the outer surface of the vehicle body side portion. Rear body structure.

2. The rear narrowing angle of the side spoiler is set in the range of 25° or more and 29° or less. The vehicle rear structure according to claim 1.

3. The width of the duct in horizontal cross section is set in the range of 6 mm to 40 mm. The vehicle rear structure according to claim 2.

4. a quarter window having a rear end extending in the front-rear direction to the duct inlet portion is provided on a side surface of the vehicle body between the rear pillar and the rear end portion of the side door, The outer surface of the quarter window is inclined rearward until the rear end thereof is positioned at the inner end of the duct inlet portion in the vehicle width direction in a horizontal cross section. The vehicle rear structure according to claim 1.

5. the duct forming member includes a pillar duct forming member provided on the vehicle width direction outer side of the rear pillar outer so that the duct is formed between the rear pillar outer and the pillar duct forming member in the vehicle width direction in a horizontal cross section; The side spoiler is formed to protrude rearward from the rear end of the pillar duct forming member. The vehicle rear structure according to claim 1.

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