Vehicle body rear structure

Abstract

To reduce a load applied to a wing-shaped part by avoiding a cantilever from a rear pillar side to a rear side while reducing air resistance of a vehicle body side surface part when a vehicle travels.SOLUTION: The side spoiler (45) behind the pillar garnish (65) includes an inboard base portion (46) fixed to the left and right side end edge portions (40) of the lid (4), and a wing-shaped portion (47) having an outer surface side 10F that is smoothly continuous with the pillar garnish (65) via a parting line side 80a on an outboard side of the base portion (46), the wing-shaped portion (47) being provided with a front duct side 47s. The side spoiler 45 is provided with a rear duct side 10F communicating between the base part 46 and the wing-shaped part 47 in the longitudinal direction and substantially continuing to the front duct side 10F to discharge the ventilation of the front duct side 10R to the rear side of the vehicle body.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a rear vehicle structure including a cover that opens and closes an opening at the rear of the vehicle body, and rear pillars that form part of the side surfaces of the rear of the vehicle body along the left and right side edge portions of the cover. [Background technology]

[0002] Generally, as shown in FIG. 7, while a vehicle is moving, it is considered effective to have the traveling winds Wu, Wd, Wl, and Wr that flow rearward along the surfaces of the roof, under the left and right body floor, and left and right side body sections and leave the rear ends of the vehicle converge at a single point Pr to form a spindle-shaped rear end at a predetermined distance behind the vehicle, in order to reduce air resistance while the vehicle is moving.

[0003] For example, in order to significantly deflect the traveling winds Wl and Wr inward in the vehicle width direction at the left and right side portions of the vehicle body, it is important to deflect the traveling winds Wl and Wr that are away from the rear end portions of the vehicle body side portions inward in the vehicle width direction, as shown in FIG. 7, and documents such as those exemplified in Patent Document 1 have been proposed to achieve this.

[0004] In Patent Document 1, the rear pillar provided on the side of the rear of the vehicle body is configured with a pillar duct at a height above the vehicle body beltline as an air passage that discharges a portion of the vehicle body side airflow taken in from in front of the rear pillar to the rear of the rear pillar.By using the discharge airflow from the pillar duct as an air curtain, the vehicle body side airflow that flows along the side of the vehicle body to its rear end is prevented from being drawn into the rear of the vehicle body when it separates from the rear end of the side of the vehicle body (i.e., the generation of turbulence), and as a result is deflected inward in the vehicle width direction.

[0005] In response to this, the applicant has discovered that, as proposed in a prior patent application (Patent Application No. 2024-070525), by extending the pillar duct disclosed in the above-mentioned Patent Document 1 rearward of the rear pillar to the outer side of the side edge of the cover body in the vehicle width direction, and by providing a wing-like portion with an outer surface that continues rearward from the outer surface of the rear pillar, the side flow of the vehicle body can be significantly deflected inward in the vehicle width direction.

[0006] However, when providing the above-mentioned wing-like portion, if it is configured to protrude rearward in a cantilevered manner from the outer side of the rear pillar in the vehicle width direction, there is a risk that excessive load will be applied to the wing-like portion, so there is room for improvement. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-126326 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a rear vehicle body structure that reduces air resistance by significantly deflecting the side wake that separates from the rear end of the side of the vehicle body while the vehicle is moving inward in the vehicle width direction, while avoiding the wing-like portion from cantilevering rearward from the rear pillar side, thereby reducing the load applied to the wing-like portion. [Means for solving the problem]

[0009] The present invention relates to a vehicle having a cover that can open and close and covers a rear opening of a vehicle body, rear pillars that form left and right side edges of the rear opening of the vehicle body and extend vertically along the left and right side edge edges of the cover in a hollow shape, and side spoilers that protrude rearward from the left and right side edge edges of the cover, the rear pillars each comprising an inner panel, an outer panel that is joined to the inner panel from the outside in the vehicle width direction and that forms a hollow portion extending vertically between the inner panel and the inner panel, and a pillar garnish that is fixed to the outer surface of the outer panel and covers part or all of the outer surface to form a decorative surface of the rear pillar, the pillar garnish having a metal frame that is attached to the pillar garnish. a front duct that communicates with the interior of the pillar garnish in the longitudinal direction, introduces traveling wind flowing along quarter windows provided on the side of the vehicle body forward of the rear pillar, and discharges it behind the rear pillar; the side spoiler includes a base portion on the interior side of the vehicle that is fixed to the outer surfaces of the left and right side edge portions of the lid body, and a wing-like portion on the exterior side of the base that has an outer surface that is smoothly continuous with the outer surface of the pillar garnish via a parting line; and the side spoiler is provided with a rear duct that communicates with the base portion and the wing-like portion in the longitudinal direction, and is generally continuous with the front duct, and discharges traveling wind that has passed through the front duct to the rear of the vehicle body.

[0010] According to the above configuration, the front duct of the pillar garnish and the rear duct of the side spoiler cooperate to guide the traveling wind (passage wind) flowing along the vehicle body side surface in front of the rear pillar to the rear of the vehicle body side surface and discharge it. In this way, by utilizing the traveling wind discharged from the ducts (the front duct and the rear duct), the side wake that separates from the rear end of the vehicle body side surface while the vehicle is traveling can be significantly deflected inward in the vehicle width direction, thereby reducing air resistance.

[0011] In addition, by fixing the pillar garnish on which the front duct is provided to the outer panel of the rear pillar and fixing the side spoiler on which the rear duct is provided to the side of the cover body, the support rigidity of the wing-shaped portion of the side spoiler that protrudes rearward beyond the pillar garnish can be increased.

[0012] Therefore, while the vehicle is moving, the side wake that separates from the rear end of the side portion of the vehicle body is deflected significantly inward in the vehicle width direction, thereby reducing air resistance, while avoiding the wing-like portion from cantilevering rearward from the side of the rear pillar, thereby reducing the load applied to the wing-like portion.

[0013] In one aspect of the present invention, the outer surface of the wing-like portion may be configured to smoothly continue rearward from the rear end of the outer surface of the pillar garnish, which forms part of the vehicle body side portion, and may be formed at a rear taper angle that is greater than the rear taper angle in a horizontal cross section of the outer surface of the pillar garnish.

[0014] According to the above configuration, while the vehicle is traveling, the side wake separated from the rear end of the outer surface of the wing-like portion is directed toward the duct wake discharged rearward from the rear duct (toward the vehicle width inward), thereby further deflecting the side wake inward in cooperation with the duct wake that produces an ejector effect, thereby reducing air resistance while the vehicle is traveling.

[0015] In another aspect of the present invention, the rear narrowing angle of the wing-like portion may be set in the range of 25° to 29°. As described above, by setting the rearward tapering angle of the outer surface of the wing-like portion to 25° or more, the side wake can be firmly directed toward the duct wake discharged rearward from the rear duct (toward the vehicle width inward), and in cooperation with the duct wake that produces an ejector effect, the side wake can be significantly deflected toward the vehicle width inward. Also, as described above, by setting the rearward tapering angle of the outer surface of the wing-like portion to 29° or less, the wing-like portion, which is provided independently of the pillar garnish, can be prevented from taking on a cantilever shape that protrudes rearward and toward the vehicle width inward, thereby reducing the load applied to the wing-like portion and ensuring the exterior design of the rear of the vehicle body. [Effects of the Invention]

[0016] According to this invention, it is possible to provide a rear vehicle body structure that reduces air resistance by significantly deflecting the side wake that separates from the rear end of the side of the vehicle body while the vehicle is moving inward in the vehicle width direction, while avoiding the wing-like portion from cantilevering rearward from the rear pillar side, thereby reducing the load applied to the wing-like portion. [Brief explanation of the drawings]

[0017] [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] (a) is an enlarged left side view of a main part of a modified rear body structure, and (b) is a cross-sectional view showing the main part along line BB in (a). [Figure 6] Graph showing the results of a simulation verifying the effectiveness of the vehicle rear body structure of this embodiment and its accompanying configuration. [Figure 7] An external view of the rear of a vehicle, seen from the left rear diagonal, showing an ideal state 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 predetermined point away from the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 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 (also referred to as "outer side of the vehicle width"), and arrow IN indicates the inner side in the vehicle width direction (also referred to as "inner side of the vehicle width"). The left and right directions of the vehicle body are based on the occupant seated in the driver's seat. Furthermore, since the left and right side portions 3 of the rear part of the vehicle body of the vehicle V of this embodiment have a substantially symmetrical shape, the following description will be mainly based on the side portion 3 on the left side of the vehicle body.

[0019] As shown in FIGS. 1 and 2, 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 at the rear vehicle body portion 2.

[0020] As shown in Fig. 3, the vehicle V of this embodiment is provided with intermediate pillars 8 and rear pillars 6 on the left and right side surfaces 3 at the rear of the vehicle body. These pillars 8, 6 extend vertically to form part of the vehicle body side surfaces 3, and are disposed spaced apart from each other in the front-to-rear direction of the vehicle, supporting the rear of the roof 7 (see Figs. 1 and 2) that covers the upper part of the passenger compartment.

[0021] As shown in Figures 1 and 2, 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.

[0022] 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 defines a roof side closed cross section (not shown) extending in the front-rear direction of the vehicle between them.

[0023] The above-mentioned rear header (not shown) is provided on the rear body portion 2 and forms the upper edge of the rear body opening 2A of the passenger compartment (luggage compartment), and cooperates with the above-mentioned roof panel 7c to form a rear header closed cross-sectional portion (not shown) extending in the vehicle width direction.

[0024] As shown in Figures 3 and 4, particularly Figure 4, the rear pillar 6 forms the left and right side edges of the rear body opening 2A and includes an inner panel 61, an outer panel 62, a gutter panel 63, a rear pillar reinforcement 64, and a pillar garnish 65.

[0025] The inner panel 61 has a middle portion 611 extending along the vehicle width direction, a front portion 612 extending forward from the outer end of the middle portion 611 in the vehicle width direction, and a rear portion 613 extending rearward from the inner end of the middle portion 611 in the vehicle width direction, and extends so that its horizontal cross section forms a crank shape.

[0026] The outer panel 62 is located outboard of the inner panel 61 in the vehicle width direction, but forms a non-cosmetic surface of the rear pillar 6, and extends along the vehicle longitudinal direction. A front end flange portion 62a of the outer panel 62 and a front end flange portion 61a of the inner panel 61 are joined to each other. The rear end flange portion 62b of the outer panel 62 is hemmed (i.e., folded back) into a V shape so that the rear end (rear tip portion) protrudes more inward in the vehicle width direction as it extends forward.

[0027] The gutter panel 63 is formed so that its horizontal cross section has a generally U-shape that gradually widens toward the rear, so as to form a rain gutter (wetted edge) on the side of the rear opening 2A of the vehicle body.

[0028] More specifically, the gutter panel 63 has an outer surface portion 631 on the outer side in the vehicle width direction. The outer surface portion 631 of the gutter panel 63, including the rear outer end flange portion 63a located at the rear outer end, extends at an inclination in a substantially linear manner with respect to the vehicle longitudinal direction so that the outer surface is positioned further outward in the vehicle width direction as it approaches the rear, and the inclination is formed to be substantially the same as the inclination of the rear end flange portion 62b of the outer panel 62 with respect to the vehicle longitudinal direction.

[0029] The rear outer end flange portion 63a of the outer surface portion 631 of the gutter panel 63 and the rear end flange portion 62b of the outer panel 62 are joined to each other, so that the outer surface portion 631 of the gutter panel 63 and the rear end flange portion 62b of the outer panel 62 extend continuously on the same straight line.

[0030] A rear inner flange portion 63b that protrudes rearward is provided at the rear end of the gutter panel 63, which is located more inward in the vehicle width direction than the outer surface portion 631, and the three rear inner flange portions 63b and the rear flange portion 61b of the inner panel 61 are joined together so as to sandwich a rear flange portion 64b (described later) of the rear pillar reinforcement 64. Note that a weatherstrip 91 is attached to these three flange portions 61b, 64b, 63b, which is pressed against the inner panel 41 of the side edge portion 40 (described later) when the lift gate 4 is closed.

[0031] The rear pillar 6 is formed by joining the inner panel 61, outer panel 62, and gutter panel 63 described above to form a closed cross-sectional portion 6a as a hollow portion extending in the vertical direction along a side edge portion 40 of the lift gate 4 described later.

[0032] The rear pillar reinforcement 64 is located between the inner panel 61 and the outer panel 62 in the vehicle width direction, and as described above, the rear end flange portion 64b is joined so as to be sandwiched between the rear end flange portion 61b of the inner panel 61 and the rear inner end flange portion 63b of the gutter panel 63, and the front end flange portion 64a is joined to the middle portion 611 of the inner panel 61. As a result, a closed cross-sectional portion extending in the vertical direction is also formed between the rear pillar reinforcement 64 and the inner panel 61. The pillar garnish 65 provided on the rear pillar 6 will be described later.

[0033] As shown in FIG. 3, the intermediate pillar 8 is configured by joining and fixing an intermediate pillar outer part 81 and an intermediate pillar inner part 82, and has an intermediate pillar closed cross section 8a extending in the vertical direction of the vehicle between them.

[0034] As shown in Figures 1 and 2, 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 front end of the rear door 14 is pivotally supported on the center pillar so that the door opening 14A can be opened and closed. 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] 1 to 3, 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 in the front-to-rear direction and is provided in front of the rear pillar 6, i.e., 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, the front end portion 15a of the quarter window 15 is located near the outer side in the vehicle width direction of the intermediate pillar outer panel 81. As shown in FIG. 3, when the rear door 14 is closed, the front end portion 15a of the quarter window 15 is located near the rear side of the door sash portion 14b located at the rear end of the rear door glass 14a of the rear door 14, and the outer surfaces of the two are arranged to be smoothly continuous in the front-to-rear direction.

[0037] As shown in the horizontal cross section of FIG. 4, the rear end portion 15b of the quarter window 15 is disposed near the outer side of the front end flange portion 62a of the outer panel 62 of the rear pillar 6 in the vehicle width direction.

[0038] The rear end portion 15b of the quarter window 15 is disposed adjacent to and in front of the main surface portion 62c of the outer panel 62 of the rear pillar 6 described above, and the respective outer surfaces are disposed substantially continuous in the front-rear direction.

[0039] 3, the outer surface of the outer panel 62 of the rear pillar 6 is located slightly inward in the vehicle width direction than the outer surface of the door sash portion 14b when the rear door 14 is closed. Therefore, the quarter window 15 is provided so as to be gently inclined inward in the vehicle width direction from the front end 15a to the rear end 15b in the horizontal cross section.

[0040] Next, the pillar garnish 65 provided on the rear pillar 6 will be described. As shown in Figs. 1 to 4, the pillar garnish 65 is attached to the outer panel 62 of the rear pillar 6 in the vehicle width direction so as to cover the entire outer surface, i.e., the outer surface located on the outer side in the vehicle width direction. The pillar garnish 65 is not limited to a configuration that covers the entire outer surface of the outer panel 62, but may also be a configuration that covers at least a portion. The outer surface 65s of the pillar garnish 65 forms the decorative surface of the rear pillar 6, i.e., the decorative surface of the portion rearward of the quarter window 15 of the vehicle body side portion 3.

[0041] 1 and 2, the quarter window 15 and the pillar garnish 65 are both located above the belt line on the vehicle body side surface 3, with the rear fender panels 13 provided adjacent to them on both the top and bottom sides. The pillar garnish 65, together with the upper and lower rear fender panels 13, forms the outer surface of the vehicle body rear side surface 3 along the rear pillar 6.

[0042] 4, the pillar garnish 65 includes a garnish inner wall portion 651 and a garnish outer wall portion 652 located outward in the vehicle width direction from the garnish inner wall portion 651, both of which are formed by resin molding. The outer surface of the garnish outer wall portion 652 forms an outer surface 65s of the pillar garnish 65, which forms the decorative surface of the rear pillar 6.

[0043] The pillar garnish 65 is formed by joining a garnish inner wall portion 651 and a garnish outer wall portion 652 together to form a central shape, and a flat internal space 65a is formed therein that extends more in the vertical and longitudinal directions than in the vehicle width direction. In addition, as long as the pillar garnish 65 is formed in a hollow shape having the front duct 10F described later, it is not limited to a structure in which the garnish inner wall portion 651 and the garnish outer wall portion 652 are joined to form a hollow shape as described above, and may be formed in a hollow shape by other means, for example, blow molding.

[0044] In this embodiment, a front wall portion 653, a rear wall portion 654, an upper wall portion 655 (see FIGS. 1 and 2), and a lower wall portion 656 (see the same figures) are provided on the front end edge, rear end edge, upper end edge, and lower end edge of the pillar garnish 65. The front wall portion 653, the rear wall portion 654, the upper wall portion 655, and the lower wall portion 656 are provided so as to close the internal space 65a of the pillar garnish 65 from the front side, the rear side, the upper side, and the lower side.

[0045] 3 and 4, a front duct 10F is provided inside the pillar garnish 65, which connects the interior in the front-rear direction and discharges traveling wind W10 introduced from the front to the rear of the rear pillar 6. More specifically, the front duct 10F introduces traveling wind W10 that flows rearward along a quarter window 15 provided in the vehicle body side portion 3 in front of the rear pillar 6.

[0046] As shown in FIGS. 1 and 2, the front duct 10F is formed in a middle region 92m of the interior space 65a of the pillar garnish 65 in the vertical direction. 1 and 2, the interior space 65a (see FIG. 4) of the pillar garnish 65 is provided with a duct upper wall portion 10Fa that defines the upper surface of the front duct 10F and a duct lower wall portion 10Fb that defines the lower surface of the front duct 10F. The duct upper wall portion 10Fa and the duct lower wall portion 10Fb each protrude in a rib-like manner from at least one side of the garnish inner wall portion 651 (see FIG. 4) or the garnish outer wall portion 652 (see the same figure) to the other side, and are formed continuously along the front-rear direction at each of the upper and lower side ends of the intermediate region 92m.

[0047] As shown in Figure 4, in the vertical middle region 92m of the front wall portion 653 of the pillar garnish 65, a front duct inlet portion 11F is opened so as to be directed forward so that the traveling wind W10 flowing rearward along the quarter window 15 can be taken into the front duct 10F.

[0048] As shown in FIG. 4, the width w10F of the front duct 10F in horizontal cross section, particularly the width w10F at the front duct inlet 11F, is set to approximately 34 mm, within the range of 6 mm to 40 mm.

[0049] As described above, the quarter window 15 is provided so as to be gently tilted inward in the vehicle width direction from the front end 15a toward the rear in a horizontal cross-sectional view (see FIG. 3). As a result, as shown in FIG. 4, the rear end 15b of the quarter window 15 is located closer to the front and inward in the vehicle width direction than the front duct inlet 11F. Therefore, by taking advantage of the tendency of traveling wind to flow in a manner that clings to the outer surface of the vehicle body, the quarter window 15 can actively guide the traveling wind W10 flowing along its outer surface from the front duct inlet 11F into the front duct 10F, as shown in FIG.

[0050] 4, in a vertical middle region 92m of the rear wall portion 654 of the pillar garnish 65, a front duct outlet portion 12F is opened to direct rearward so that traveling wind W10 flowing inside the rear pillar 6, i.e., through the front duct 10F, can be discharged rearward. As described above, the front duct 10F communicates between the front duct inlet portion 11F and the front duct outlet portion 12F in the fore-and-aft direction of the vehicle.

[0051] As shown in FIG. 2, in this embodiment, the front duct 10F is formed with approximately the same vertical width in the front-to-rear direction in the vertical middle region 92m of the pillar garnish 65, but this is not limited thereto, and the vertical width may be changed at an intermediate position along the path along the front-to-rear direction, or the path direction may be changed up and down.

[0052] As shown in FIG. 4, the pillar garnish 65 has a garnish inner wall portion 651 attached to the outer panel 62 of the metal rear pillar 6 via a grommet 26 from the outside in the vehicle width direction. In detail, in the garnish inner wall portion 651, in the upper region 92a (see Figure 2) and lower region 92b (see Figure 2) relative to the front duct 10F, multiple seating portions 651a (see Figure 4) are provided at intervals in the fore-and-aft direction, protruding inward in the vehicle width direction toward the outer panel 62 of the rear pillar 6.

[0053] As shown in Figure 4, the pillar garnish 65 is attached to the outer panel 62 by fitting a grommet 26 attached to the seat portion 651a from the inside in the vehicle width direction into a through hole (not shown) provided in the outer panel 62 of the rear pillar 6 at the portion opposite the seat portion 651a.

[0054] A front wall portion 653 located on the front edge of the pillar garnish 65 is provided with a decorative plate 66 that protrudes forward from the outer end of the front wall portion 653 in the vehicle width direction in the shape of a canopy. As shown in Figures 1 and 2, this decorative panel 66 is formed in a blade shape to resemble the rear edge frame body along the rear edge of the outer frame that runs along the upper and rear edge of the quarter window 15, and is positioned along the rear edge of the quarter window 15 when the pillar garnish 65 is attached to the main surface portion 62c of the outer panel 62.

[0055] This decorative panel 66 covers the rear end 15b of the quarter window 15 and the front duct inlet 11F provided in the front wall 653 from the outside in the vehicle width direction, thereby ensuring a good appearance around the front duct inlet 11F.

[0056] Next, the lift gate 4 will be described. Lift gate 4 is configured to open and close rear vehicle body opening 2A. As shown in Fig. 1, lift gate 4 includes a metal inner panel 41, a metal outer panel 42, a rear window glass 43, a synthetic resin roof spoiler 44, and synthetic resin side spoilers 45, and is generally curved forward as it extends upward in a side view of the vehicle (see Fig. 2). Outer panel 42 forms the outer surface of lift gate 4 except for its upper end portion, and is equipped with the inner lamp portion of rear combination lamp 18, a rear wiper mechanism, and the like.

[0057] As shown in Figures 1 and 4, the side edge portions 40 on both the left and right sides of the lift gate 4 are formed by joining and fixing an inner panel 41 and an outer panel 42, and have a closed cross section 4a extending in the vertical direction of the vehicle between these panels 41, 42.

[0058] The outer portion of the inner panel 41 of the lift gate 4 in the vehicle width direction is formed in a generally U-shape that gradually widens forward so that when the lift gate 4 is closed, the outer portion faces the rear side of the gutter panel 63 across the movable area ma of the gas spring. The gas spring is a spring that utilizes the reaction force of compressed gas to assist in lifting and lowering the lift gate 4 when it is opened or closed.

[0059] As shown in FIG. 3, trims 34a, 34b, and 34c serving as interior members are provided on the vehicle interior side of the intermediate pillar 8, rear pillar 6, and side edge portion 40 of the lift gate 4, respectively.

[0060] 1, the roof spoiler 44 cooperates with the outer panel 42 to form part of the outer surface of the lift gate 4, covering the upper end portions of the rear window glass 43 and the left and right side spoilers 45. The roof spoiler 44 is formed in a substantially horizontal shape and protrudes rearward from the rear end of the roof panel 7c when viewed from the side of the vehicle.

[0061] As shown in Fig. 1, both left and right ends of the roof spoiler 44 are formed in a generally downward curve along extensions of both left and right ends of the roof side rails 7a when viewed from the rear of the vehicle. Also, as shown in Fig. 2, the rear end of the roof spoiler 44 extending in the vehicle width direction has a central portion disposed furthest rearward compared to both left and right end portions.

[0062] As shown in Figures 1, 2, and 4, the side spoiler 45 is formed integrally or in one piece by resin molding so that the entire side spoiler 45 has a vertically elongated shape that follows the side edge portion 40, and is provided on both sides of the rear window glass 43 over approximately the entire length in the vertical direction.

[0063] As shown in FIG. 4, the rear pillar 6 is aligned with the side edge portion 40 of the lift gate 4 and the side spoiler 45 in the vehicle width direction so that a lateral parting line 80a (a small gap) is formed between the rear end portion 65rr and the wing-like portion 47 of the side spoiler 45 provided on the outer side of the side edge portion 40 in the vehicle width direction when the lift gate 4 is closed. In this embodiment, as shown in Figures 1 and 2, the pillar garnish 65 and the duct forming portion 45m (described later) of the side spoiler 45 are provided at the same height, and as shown in the horizontal cross section of Figure 4, the rear portion 65r of the rear wall portion 654 of the pillar garnish 65 and the front portion 45f of the side spoiler 45 face each other via the lateral parting line 80a.

[0064] This side parting line 80a forms part of the parting line 80 that forms the boundary between the lift gate 4 in a closed state and the vehicle body in which the vehicle rear opening 2A is provided, and extends in the vertical direction so as to be positioned downward and rearward together with both left and right ends of the parting line 80b that extends in the vehicle width direction and is formed at the boundary between the roof portion 7 and the roof spoiler 44 as shown in Figures 1 and 2 , so as to be visible when viewed from the side of the vehicle.

[0065] In more detail, the side parting line 80a is generally visible either when viewed from the side of the vehicle or when viewed from the rear of the vehicle depending on the vehicle model, but in the vehicle of this embodiment, a so-called side parting line that is visible when viewed from the side of the vehicle is formed. In other words, the pillar garnish 65 and the side spoiler 45 are provided separately on the front and rear sides, separated by the side parting line 80a.

[0066] 4, the rear surface portion 65r of the pillar garnish 65 is formed at an angle relative to the front-to-rear direction so as to be positioned more forward inward in the vehicle width direction and more outward in the vehicle width direction than the rear end flange portion 62b of the outer panel 62 of the rear pillar 6, so as to extend substantially continuously and in the same straight line as the rear end flange portion 62b. On the other hand, as shown in the horizontal cross section of FIG. 4, the front surface portion 45f of the side spoiler 45, which faces the rear surface portion 65r of the pillar garnish 65 across the lateral parting line 80a, is formed parallel to the rear surface portion 65r of the pillar garnish 65.

[0067] As a result, even if the vehicle of this embodiment has a lateral parting line 80a extending in the vertical direction at the boundary between the pillar garnish 65 and the side spoiler 45, the internal structure of the rear of the vehicle body is prevented from being seen from outside the vehicle body through the lateral parting line 80a, thereby improving the appearance of the vehicle when viewed from the side.

[0068] 1 and 2, a duct forming portion 45m is provided in a vertical intermediate region of the above-described vertically elongated side spoiler 45. As shown in Figures 1 and 4, the side spoiler 45 includes a base portion 46 that forms the inner surface in the vehicle width direction over the entire vertical length including the duct forming portion 45m, and a wing-like portion 47 that is located outboard of the base portion 46 in the vehicle width direction and forms the outer surface in the vehicle width direction.

[0069] A rear duct 10R that provides longitudinal communication between the base 46 and the wing-like portion 47 is provided in the duct forming portion 45m of the side spoiler 45. More specifically, the rear duct 10R is formed in a vertically elongated shape that provides longitudinal communication between the side spoiler 45 and the side spoiler 45 by the outer surface of the base 46 in the vehicle width direction and the inner surface of the wing-like portion 47 in the vehicle width direction at the duct forming portion 45m.

[0070] 4, a rear duct inlet portion 11R is provided in a front surface 45f of the side spoiler 45, which takes in the traveling wind W10 discharged from a front duct outlet portion 12F of the pillar garnish 65. A rear duct outlet portion 12R is provided in a rear surface 45r of the duct forming portion 45m of the side spoiler 45, which discharges the traveling wind W10 that has passed through the inside of the side spoiler 45 (i.e., the rear duct 10R). In the rear duct 10R, the rear duct inlet portion 11R and the rear duct outlet portion 12R communicate with each other.

[0071] The front duct 10F and the rear duct 10R have approximately the same width in the vehicle width direction (duct width) and the same width in the up-down direction, and the front duct outlet portion 12F and the rear duct inlet portion 11R face each other across the side parting line 80a, so that the front duct 10F and the rear duct 10R are approximately continuous with each other through the side parting line 80a.

[0072] That is, on the side portion 3 at the rear of the vehicle body, the front duct 10F and the rear duct 10R cooperate with each other to form essentially a single duct 10 that extends almost continuously across the pillar garnish 65 and the side spoiler 45, and in which the front duct inlet portion 11F and the rear duct outlet portion 12R are connected.

[0073] As shown in Figure 4, the base 46 of the side spoiler 45 has a horizontal cross section that curves inward in the vehicle width direction toward the rear along the outer surface of the outer panel 42 of the left and right side edge portions 40 of the lift gate 4, and is fixed to the outer panel 42 via a grommet 27.

[0074] The wing-like portion 47 of the side spoiler 45 protrudes rearward beyond the rear end of the base portion 46. As shown in the horizontal cross section of Figure 4, the outer surface 47s of the wing-like portion 47 forming the outer surface of the side spoiler 45 smoothly continues rearward via a side parting line 80a with the outer surface 65s of the pillar garnish 65 forming part of the outer surface of the side portion 3 of the rear of the vehicle body.

[0075] In this embodiment, the pillar garnish 65 is smoothly formed so that at least the rear portion of its outer surface 65s is positioned gradually more inward in the vehicle width direction as it moves rearward, and the outer surface 47s of the wing-like portion 47 is smoothly formed over its entire length in the fore-and-aft direction so that it is positioned gradually more inward in the vehicle width direction as it moves rearward, and smoothly continues to the outer surface 65s of the pillar garnish 65.

[0076] 4, a tangent line L47 of a rear end 47a of an outer surface 47s of the wing-like portion 47 of the side spoiler 45 is formed to be inclined with respect to the front-rear direction so as to be positioned more inward in the vehicle width direction as it moves rearward. The angle of the tangent line L47 of the rear end 47a of the outer surface 47s of such wing-like portion 47 with respect to the front-rear direction is defined as a rear tapering angle α47 (also referred to as a "rear end angle") of the outer surface of the side spoiler 45 in the horizontal cross section.

[0077] 4, a tangent line L65 of a rear end portion 65rr of an outer surface 65s of the pillar garnish 65 is also inclined with respect to the front-to-rear direction so that the rearward position is positioned more inward in the vehicle width direction in the horizontal cross section. The angle of the tangent line L65 of the rear end portion 65rr of the outer surface 65s of the pillar garnish 65 with respect to the front-to-rear direction is defined as a rear tapering angle α65 of the outer surface 65s of the pillar garnish 65 in the horizontal cross section.

[0078] The outer surface 47s of the wing-like portion 47 is formed to have a rear tapering angle α47 that is larger than the rear tapering angle α65 of the outer surface 65s of the pillar garnish 65 in a horizontal cross section. In this embodiment, the rearward tapering angle α65 in a horizontal cross section of the outer surface 65s of the pillar garnish 65 is 19 degrees, while the rearward tapering angle α47 in a horizontal cross section of the outer surface 47s of the wing-like portion 47 is set to 25 degrees in the range of 25° or more and 29° or less.

[0079] As shown in Figures 1 to 4, particularly Figure 4, the rear vehicle body structure of this embodiment described above includes a lift gate 4 (lid) that opens and closes the rear vehicle body opening 2A, rear pillars 6 that form the left and right side edges of the rear vehicle body opening 2A and extend hollowly in the vertical direction along the left and right side edge edges 40 of the lift gate 4, and side spoilers 45 that protrude rearward from the left and right side edge edges 40 of the lift gate 4.

[0080] Furthermore, the rear pillar 6 comprises an inner panel 61, an outer panel 62 which is joined to the inner panel 61 from the outside in the vehicle width direction and which forms a closed cross-sectional portion 6a (hollow portion) extending in the vertical direction between the inner panel 61 and the inner panel 61, and a pillar garnish 65 which is fixed to the outer surface of the outer panel 62 and covers part of the outer surface to form a decorative surface of the rear pillar 6.

[0081] The pillar garnish 65 is also provided with a front duct 10F that connects the interior of the pillar garnish 65 in the longitudinal direction, introduces the running wind W10 that flows along the quarter window 15 provided on the vehicle body side portion 3 in front of the rear pillar 6, and discharges it behind the rear pillar 6.

[0082] Furthermore, the side spoiler 45 includes a base 46 on the inner side in the vehicle width direction that is fixed to the outer surface of the left and right side edge portions 40 of the lift gate 4, and a wing-like portion 47 having an outer surface 47s that is smoothly continuous with the pillar garnish 65 on the outer surface of the base 46 via the side parting line 80a.

[0083] The side spoiler 45 is provided with a rear duct 10R that connects the base 46 and the wing-like portion 47 in the front-rear direction and is substantially continuous with the front duct 10F, for discharging the running wind W10 flowing through the front duct 10F to the rear of the vehicle body.

[0084] According to the above configuration, when the wind (hereinafter also referred to as "side flow W3") flowing along the side surface 3 at the rear of the vehicle body while the vehicle is moving (see Figures 3 and 4) separates from the rear end of the side surface 3 of the vehicle body, it is deflected significantly inward in the vehicle width direction to reduce air resistance, while preventing the wing-like portion 47 from being cantilevered from the side of the rear pillar 6, thereby reducing the load applied to the wing-like portion 47.

[0085] 4, the outer surface 65s of the pillar garnish 65 and the outer surface 47s of the wing-like portion 47 of the side spoiler 45 are continuous in the front-to-rear direction across the lateral parting line 80a. Therefore, while the vehicle is traveling, the side flow W3 can flow substantially continuously from the front end of the outer surface 65s of the pillar garnish 65 to the rear end 47a of the outer surface 47s of the wing-like portion 47 where the side flow W3 separates.

[0086] On the other hand, the running wind W10 (hereinafter also referred to as "duct wake W10r") (see FIGS. 3 and 4) discharged from the rear duct outlet 12R has a flow velocity faster than the side flow W3, and can exert an ejector effect (suction effect) that draws inward in plan view the side flow W3r (hereinafter also referred to as "side-passage wake W3r") (see the same figures) that passes through the rear end 47a of the blade-shaped portion 47 (in other words, separates from the rear end 47a) and flows toward the rear of the vehicle. This ejector effect can promote the inward deflection of the side-passage wake W3r in plan view. Therefore, when the side flow W3 separates from the rear end of the vehicle body side surface 3 while the vehicle is traveling, it can be deflected significantly inward in the vehicle width direction, thereby reducing air resistance.

[0087] Furthermore, according to the above configuration, the pillar garnish 65 and the side spoiler 45, which are arranged so that their outer surfaces 65s, 47s are continuous in the fore-and-aft direction, are configured independently of each other via the side parting line 80a, and the pillar garnish 65 is attached and fixed to the outer panel 62 of the rear pillar 6, while the base 46 of the side spoiler 45 is attached and fixed to the side edge portion 40 of the lift gate 4. Therefore, the side spoiler 45 can be supported with higher rigidity by the side edge portion 40 compared to a configuration in which the side spoiler 45 is formed to protrude rearward in a cantilevered manner from the pillar garnish 65 beyond the side parting line 80a. Therefore, the load applied to the wing-like portion 47 of the side spoiler 45 can be reduced.

[0088] In addition, in order to obtain an ejector effect by the duct post-flow W10r, the rear body structure of this embodiment discharges the running wind flowing through the front duct 10F and the rear duct 10R while ensuring a sufficient flow rate as the duct post-flow W10r discharged from the rear duct outlet portion 12R.

[0089] 3, a quarter window 15 is provided on the vehicle body side surface 3 in front of the rear pillar 6, and this quarter window 15 ensures a long wind guide section for introducing the traveling wind W10 into the front duct 10F. Therefore, as shown in FIGS. 3 and 4, the front duct 10F provided inside the pillar garnish 65 can take in the traveling wind W10 along the quarter window 15 with a sufficient flow rate.

[0090] Furthermore, the front duct 10F is provided on the pillar garnish 65 (vehicle body side), and the rear duct 10R is provided on the side spoiler 45 (lift gate 4 side), each separated by a lateral parting line 80a. However, the front duct 10F and the rear duct 10R are generally continuous in the front-to-rear direction, and the traveling wind W10 introduced into the front duct inlet 11F of the front duct 10F is discharged from the rear duct outlet 12R of the rear duct 10R to the rear of the vehicle body as a duct wake W10r. This allows the duct wake W10r to be discharged from the rear duct 10R while ensuring a sufficient flow rate. Therefore, the ejector effect of the duct wake W10r can be reliably obtained.

[0091] As an aspect of this invention, as shown in Figure 4, the vehicle body rear structure of this embodiment is characterized in that the outer surface 47s of the wing-like portion 47 is arranged to smoothly continue rearward from the rear end portion 65rr of the outer surface 65s of the pillar garnish 65 that forms part of the vehicle body side portion 3, and is formed at a rear taper angle α47 that is larger than the rear taper angle α65 in the horizontal cross section of the outer surface 65s of the pillar garnish 65.

[0092] According to the above configuration, while the vehicle is traveling, the side wake W3r separated from the rear end 47a of the outer surface 47s of the wing-like portion 47 is directed toward the duct wake W10r discharged rearward from the rear duct 10R (toward the vehicle width inward), thereby further deflecting the side wake W3r inward in cooperation with the duct wake W10r, which produces an ejector effect. Therefore, air resistance while the vehicle is traveling can be reduced.

[0093] In one embodiment of the present invention, as shown in FIG. 4, a rear narrowing angle α47 of an outer surface 47s of a wing-like portion 47 is set in the range of 25° to 29°. According to the above configuration, by setting the rearward tapering angle α47 of the outer surface 47s of the wing-like portion 47 to 25° or more, the side-passing wake W3r can be reliably directed toward the duct-passing wake W10r (toward the vehicle width inward) discharged rearward from the rear duct 10R, and the side-passing wake W3r can be significantly deflected toward the vehicle width inward in cooperation with the duct-passing wake W10r, which produces an ejector effect. On the other hand, by setting the rearward tapering angle α47 of the outer surface 47s of the wing-like portion 47 to 29° or less, the wing-like portion 47 is prevented from protruding rearward and toward the vehicle width inward, thereby ensuring the appearance design of the rear of the vehicle body.

[0094] In one embodiment of the present invention, as shown in FIG. 4, the width w10F of the duct 10 (front duct 10F and rear duct 10R), particularly the front duct inlet portion 11F, in horizontal cross section is set to a range of 6 mm or more and 40 mm or less. According to the above configuration, by setting the rear narrowing angle α47 of the wing-like portion 47 within the above-mentioned range and setting the width w10F of the horizontal cross section of the duct 10 within the above-mentioned range, it is possible to take in the desired flow rate of running wind W10 into the duct 10 while suppressing the increase in size due to the rearward protrusion of the side spoiler 45 that constitutes the rear duct 10R.

[0095] In the correspondence between the configuration of this invention and the above-described embodiments, the lid body corresponds to the lift gate 4, the parting line corresponds to the side parting line 80a, and the hollow portion corresponds to the closed cross-sectional portion 6a, but this invention is not limited to the configuration of the above-described embodiments, and many embodiments can be obtained.

[0096] For example, the rearward protruding length of the wing-like portion of the present invention and the rearward tapering angle in the horizontal cross section of the outer surface of the wing-like portion are not limited to the shape of the wing-like portion 47 in the above-described embodiment, and may be changed to other forms within the scope of the technical concept of the present invention.

[0097] Figure 5(a) shows a side view of a modified vehicle rear structure having a wing-like portion 47' with a rear tapering angle α47' larger than the rear tapering angle α47 of the wing-like portion 47 of the above-mentioned embodiment, and Figure 5(b) is a horizontal cross-sectional view corresponding to the main part of Figure 4 of the same modified vehicle rear structure. While the rear tapering angle α47 of the wing-like portion 47 of the above-described embodiment is set to 25 degrees as described above, the rear tapering angle α47' of the wing-like portion 47' of the modified example indicates the angle of a tangent L47' to a rear end portion 47a' of an outer surface 47s' of the wing-like portion 47' with respect to the front-to-rear direction, and is set to 29 degrees, as shown in Figures 5(a) and 5(b). In other words, the wing-like portion 47' of the modified example is formed to protrude rearward and inward inward in the vehicle width direction than the wing-like portion 47 of the above-described embodiment.

[0098] FIG. 6 is a graph showing the results of a simulation conducted to verify the inward deflection angle in a horizontal cross-sectional view of the side wake W3r that passes through the rear end of the side portion 3 at the rear of the vehicle body when the vehicle is traveling, for rear vehicle body structures according to Invention Examples 1 to 4, which are included in the present invention and which are described below, as well as Conventional Examples 1 to 4 and a Comparative Example.

[0099] Specifically, Fig. 6 is a graph showing the relationship between the horizontal width w10F of the duct 10 and the inward angle of the wake W3r after passing through the side surface, depending on whether or not the duct 10 (front duct 10F and rear duct 10R) is present, and, when the duct 10 is present, depending on two types of rear narrowing angles (25 degrees and 29 degrees). That is, the horizontal axis in Fig. 6 represents the horizontal width w10F of the duct 10, and the vertical axis in Fig. 6 represents the inward angle of the wake W3r after passing through the side surface.

[0100] 6 is the target area, which includes the results obtained when simulating the rear body structure of the present invention. The ideal inward deflection angle is 15 degrees.

[0101] Conventional Example 1, which was configured without the duct 10 and the wing-like portion 47, produced the results shown by plot Paa in Fig. 6. In contrast to Conventional Example 1, Conventional Examples 2 and 3, which were provided with the duct 10, produced the results shown by plots Pab and Pac in Fig. 6, corresponding to the horizontal width w10F of the duct 10 being 17 mm and 34 mm, respectively. That is, as shown in Fig. 6, Conventional Examples 2 and 3, which correspond to plots Pab and Pac, respectively, both had improved inward deflection angles of the side passage wake W3r compared to Conventional Example 1, which corresponds to plot Paa in Fig. 6. However, Conventional Examples 1 to 3 all had values ​​below 8 degrees, falling outside the range of the target region Rd.

[0102] Furthermore, in Conventional Example 4, which did not have the duct 10 but had the rear constriction angle of the airfoil portion 47 set to 25 degrees, the results were as shown by plot Pba in Fig. 6. That is, as shown in Fig. 6, in Conventional Example 4 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.

[0103] Inventive Examples 1 and 2, the duct 10 is included in the conventional example 4, which corresponds to plot Pba. Specifically, both of the inventive examples 1 and 2 are based on the vehicle rear body structure of the above-described embodiment, and the rear tapering angle α47 in the horizontal cross section of the outer surface 47s of the wing-like portion 47 is set to 25 degrees. In both of the inventive examples 1 and 2, the horizontal widths w10F of the duct 10 are 17 mm and 34 mm, respectively, resulting in the results shown by plots Pbb and Pbc in FIG. 6. That is, as shown in FIG. 6, in both of the inventive examples 1 and 2, which correspond to plots Pbb and Pbc, the inward deflection angle of the side passage wake W3r is improved to more than 8 degrees, compared to the conventional example 4, which corresponds to plot Pba.

[0104] Furthermore, in a comparative example in which the duct 10 was not provided but the rear tapering angle of the airfoil portion 47 was set to 29 degrees, the results were as shown by plot Pca in Fig. 6. That is, as shown in Fig. 6, in the comparative example corresponding to plot Pca, the inward deflection angle of the side passage wake W3r exceeded 8 degrees.

[0105] However, in the case of the comparative example where there is no duct 10, it was found that in order to obtain the same results as in Examples 1 and 2 in which the rear tapering angle α47 of the wing-like portion 47 is set to 25 degrees, that is, to obtain the same inward deflection angle of the side passage wake W3r, it is necessary to set the rear tapering angle of the wing-like portion to a larger value of 29 degrees. In other words, when the wing-like portion is configured as in the comparative example, it is necessary to make it protrude further rearward and inward inward in the vehicle width direction.

[0106] Furthermore, Examples 3 and 4 are both invention examples in which the duct 10 is provided, as opposed to the above-described comparative example corresponding to the plot Pca. More specifically, Examples 3 and 4 are both based on the vehicle body rear structure of the modified example described above (see Figures 5(a) and (b)), and as shown in Figure 5(b), the rear tapering angle α47' in the horizontal cross section of the outer surface 47s' of the wing-like portion 47' is set to 29 degrees.

[0107] In both Examples 3 and 4 of the invention, the horizontal width w10F of the duct 10 was 17 mm and 34 mm, respectively, resulting in the results shown by plots Pcb and Pcc in Figure 6. That is, as shown in Figure 6, in Examples 3 and 4 corresponding to plots Pcb and Pcc, respectively, the inward deflection angle of the wake W3r after side passage was improved compared to the comparative example, exceeding the ideal value of 15 degrees.

[0108] From the results shown in Figure 6, it was confirmed that the wing-like portions 47, 47', which have a larger rear tapering angle than conventional ones, and the duct wake W10r while the vehicle is moving work together to significantly deflect the side wake W3r toward the inside in the vehicle width direction while reducing the rearward protrusion length of the wing-like portions 47, 47'. In other words, it was confirmed that 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.

[0109] 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 w10F of the duct 10 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 this setting, when the horizontal width w10F of the duct 10 was 17 mm, the wind speed at the front duct inlet 11F was 40 kph and the wind speed at the rear duct outlet 12R was 55 kph. In contrast, when the horizontal width w10F of the duct 10 was 34 mm, the wind speeds at the front duct inlet 11F and the rear duct outlet 12R were both 76 kph.

[0110] These results suggest that a wider horizontal width w10F of duct 10 increases the amount of air that can be taken into duct 10 from front duct inlet 11F, improving the flow velocity of the road-driven wind flowing inside duct 10 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 vehicle width direction (ejector effect). [Explanation of symbols]

[0111] 2A…Rear opening of vehicle body 3...Side of the vehicle 4...Lift gate (lid) 6...Rear pillar 6a...Closed section (hollow part) 10F...Front duct 10R...Rear duct 15...Quarter window 40...Left and right side edge portions of the lift gate 45...Side spoiler 46...Base 47,47'...Alar part 47s, 47s'...Outer surface of the wing 61...Rear pillar inner panel 62...Rear pillar outer panel 65...Pillar garnish 65s...Outer surface of pillar garnish 65rr...Rear end of the outer surface of the pillar garnish 80a...Side parting line (parting line) α47, α47'... Rear draw angle in horizontal cross section of the outer surface of the wing α65…Rear narrowing angle in horizontal cross section of the outer surface of the pillar garnish

Claims

1. a cover that opens and closes a rear opening of a vehicle body; rear pillars that form left and right side edges of the rear opening of the vehicle body and extend vertically in a hollow shape along the left and right side edge edges of the cover; and side spoilers that protrude rearward from the left and right side edge edges of the cover, the rear pillar comprises an inner panel, an outer panel joined to the inner panel from the outer side in the vehicle width direction and defining a hollow portion extending in the up-down direction between the inner panel and the outer panel, and a pillar garnish fixed to an outer surface of the outer panel, covering a part or all of the outer surface to form a decorative surface of the rear pillar, The pillar garnish is provided with a front duct that connects the interior of the pillar garnish in the front-rear direction, introduces running wind that flows along a quarter window provided on a side surface of the vehicle body in front of the rear pillar, and discharges the wind behind the rear pillar, the side spoiler includes a base portion on an interior side of the vehicle that is fixed to the outer surfaces of the left and right side edge portions of the cover body, and a wing-like portion that has an outer surface that is smoothly continuous with the outer surface of the pillar garnish via a parting line on the exterior side of the base, The side spoiler is provided with a rear duct that connects the base and the wing-like portion in the front-rear direction, and that is substantially continuous with the front duct and discharges the traveling wind that has passed through the front duct to the rear of the vehicle body. Rear body structure.

2. The outer surface of the wing-like portion is provided so as to smoothly continue rearward from the rear end of the outer surface of the pillar garnish that forms part of the vehicle body side portion, and is formed at a rear tapering angle that is larger than the rear tapering angle of the outer surface of the pillar garnish in a horizontal cross section. The vehicle rear structure according to claim 1.

3. The rear narrowing angle of the wing-like portion is set in the range of 25° or more and 29° or less. The vehicle rear structure according to claim 2.

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