JP2013163423A - Vehicle rear structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle rear structure capable of suppressing the generation of dirt on a rear bumper cover by muddy water scattering from a discharge opening of a rear surface of the rear bumper cover.SOLUTION: A duct part 20 is provided on the inside of a rear bumper cover and the vehicle rear side of a rear wheel house as an air passage that discharges air in the rear wheel house toward the vehicle rear side of the rear bumper cover. The duct part 20 consists of a cylindrical body, and has a sawtooth shape part 36 composed of a plurality of slopes 36A that stand up in an oblique direction from the vehicle front side toward the vehicle rear side, provided for a bottom wall 26 that composes a lower part of the duct part 20. Pores 38 for drainage are formed in the duct part 20 at positions where the height of the slopes 36A is the lowest.

Description

  The present invention relates to a vehicle rear structure.

  Patent Document 1 below discloses a structure that includes a passage portion formed by a rear bumper and a quarter panel, and discharges air in the rear wheel house to the rear of the vehicle through an opening provided on the rear surface of the rear bumper by the passage portion. Yes. In this structure, the air resistance of the vehicle is reduced by blowing the air in the rear wheel house from the passage toward the air outlet on the rear surface of the rear bumper.

Japanese Patent Laid-Open No. 7-25369

  In the above-mentioned Patent Document 1, when the vehicle travels in the rain, the muddy water wound up by the rear tire passes through the passage portion provided at the rear of the rear wheel house, and the muddy water flows from the air outlet on the rear surface of the rear bumper to the lower part of the rear bumper. It may make the rear bumper look worse.

  In view of the above facts, an object of the present invention is to provide a vehicle rear structure that can suppress the occurrence of dirt on the rear bumper cover due to the scattering of muddy water from the discharge opening on the rear surface of the rear bumper cover.

  The vehicle rear structure according to the invention of claim 1 is provided inside the rear bumper cover and on the vehicle rear side of the rear wheel house, and the discharge opening provided in the rear region of the rear bumper cover for the air in the rear wheel house A plurality of air passage portions that are discharged from the vehicle rear side and a bottom wall that forms a lower portion of the air passage portion, and that rise obliquely from the vehicle front side where the air flows into the air passage portion toward the vehicle rear side. It has a saw-tooth shape part comprised by the inclined surface, and the hole for drainage formed in the position where the height of the said inclined surface is the lowest.

  According to a second aspect of the present invention, in the vehicle rear portion structure according to the first aspect, the inclined surface is disposed so as to be inclined in at least one of the vehicle width directions when viewed in the vehicle front-rear direction.

  According to the first aspect of the present invention, the air passage provided in the rear bumper cover and on the vehicle rear side of the rear wheel house allows the air in the rear wheel house to be provided in the rear area of the rear bumper cover. To the rear of the vehicle. The bottom wall that forms the lower part of the air passage part is provided with a saw-tooth shaped part composed of a plurality of inclined surfaces that rise obliquely from the vehicle front side where the air flows into the air passage part toward the vehicle rear side. A drain hole is formed at a position where the height of the inclined surface is the lowest. As a result, when muddy water as a heavy material enters the air passage portion, the muddy water is trapped on any of the plurality of inclined surfaces, and the muddy water flows on the inclined surface and is formed at a position where the height of the inclined surface is the lowest. It is discharged to the outside through the hole for drainage. Thereby, scattering of muddy water from the discharge opening of the air passage portion is suppressed, and muddy water can be prevented from dripping from the discharge opening to the rear surface of the rear bumper cover.

  According to the second aspect of the present invention, the muddy water is inclined so that the inclined surface is inclined not only in the vehicle front-rear direction but also in at least one of the vehicle width directions as viewed in the vehicle front-rear direction. It becomes easier to flow at a low position, and muddy water is prevented from staying in the air passage portion.

  According to the vehicle rear structure according to the present invention, it is possible to suppress the occurrence of dirt on the rear bumper cover due to the scattering of muddy water from the discharge opening on the rear surface of the rear bumper cover.

1 is a perspective view showing a vehicle to which a vehicle rear structure according to a first embodiment is applied. It is a perspective view showing the composition near the duct part of the rear part of the vehicle to which the vehicle rear part structure concerning a 1st embodiment was applied. It is a side view showing the composition near the duct part of the rear part of the vehicle to which the vehicle rear part structure concerning a 1st embodiment was applied. It is a top view which shows the structure of the duct part vicinity of the rear part of the vehicle to which the vehicle rear part structure which concerns on 1st Embodiment was applied. It is a perspective view which shows the duct part used for the vehicle rear part structure which concerns on 1st Embodiment. It is a longitudinal cross-sectional view along the vehicle width direction of the duct part shown in FIG. It is a longitudinal cross-sectional view (end view) of the duct part along line 2-2 in FIG. It is a perspective view which shows the duct part used for the vehicle rear part structure which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view along the vehicle width direction of the duct part shown in FIG. It is a longitudinal cross-sectional view along the vehicle width direction which shows the duct part used for the vehicle rear part structure which concerns on 3rd Embodiment. It is a perspective view which shows the duct part used for the vehicle rear part structure which concerns on 4th Embodiment.

  Hereinafter, a first embodiment of a vehicle rear structure according to the present invention will be described with reference to FIGS. Note that an arrow RR appropriately shown in these drawings indicates the vehicle rear side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  FIG. 1 is a perspective view of a vehicle to which the vehicle rear portion structure according to the present embodiment is applied. FIG. 2 is a perspective view showing a rear portion of a vehicle to which the vehicle rear structure according to the present embodiment is applied. FIG. 3 shows a rear portion of the vehicle to which the vehicle rear structure according to the present embodiment is applied. Is shown in a side view. FIG. 4 is a plan view showing the rear portion of the vehicle to which the vehicle rear structure according to this embodiment is applied. As shown in these drawings, a rear bumper cover 12 made of resin is attached to the rear portion 11 of the vehicle 10 at the rear end portion on the vehicle lower side. The rear bumper cover 12 includes a rear surface portion 12A disposed along the vehicle width direction at the rear end portion of the vehicle 10, and a side surface portion 12B extending from both ends in the vehicle width direction of the rear surface portion 12A to the vehicle front side. . A rear combination lamp 22 is attached to the rear portion 11 of the vehicle 10 above the position where the rear surface portion 12A and the side surface portion 12B of the rear bumper cover 12 intersect. In FIG. 3, only the side surface portion 12B of the rear bumper cover 12 on one side of the vehicle 10 is illustrated, and the other side portion of the vehicle 10 is left-right symmetric and is not illustrated.

  The rear portion 11 of the vehicle 10 is provided with a rear wheel house 16 for storing the rear tire 14 on the vehicle front side of the side surface portion 12B of the rear bumper cover 12. A fender liner 18 is provided at a position facing the rear tire 14 at the front end of the side surface portion 12B of the rear bumper cover 12. The fender liner 18 is formed to curve in the vehicle vertical direction and the vehicle width direction along the peripheral surface of the rear tire 14.

  On the inner side in the vehicle width direction of the side surface portion 12B of the rear bumper cover 12, a duct portion (rear outlet duct) 20 as an example of an air passage portion is provided along the vehicle front-rear direction. The duct portion 20 is provided on both sides of the rear portion 11 of the vehicle 10 (see FIGS. 2 and 4). The duct portion 20 is disposed between the side surface portion 12B of the rear bumper cover 12 and the vehicle main body on the inner side in the vehicle width direction, and is fixed to the vehicle main body with a fixture (not shown). The duct portion 20 is disposed on the vehicle rear side of the rear wheel house 16.

  The duct part 20 arrange | positioned at the width direction left side of the rear part 11 of the vehicle 10 by vehicle front view is shown by FIGS. Since the duct part 20 arrange | positioned in the width direction right side of the rear part 11 of the vehicle 10 by the vehicle front view is symmetrical, it abbreviate | omits illustration.

  As shown in FIGS. 2 and 5, the duct portion 20 is formed of a cylindrical body, and a cross section along the vehicle width direction is formed in a rectangular shape that is long in the vehicle vertical direction. That is, as shown in FIGS. 5 to 7, the duct portion 20 includes a pair of left and right side walls 24 and 25 disposed so as to face the vehicle width direction inner side and the vehicle width direction outer side, and the vehicle width direction below the vehicle. And a bottom wall portion 26 disposed along the vehicle front-rear direction, and a ceiling wall 28 facing the bottom wall portion 26 and disposed above the vehicle along the vehicle width direction and the vehicle front-rear direction. An inflow opening 30 through which air in the rear wheel house 16 flows is formed at the front end portion of the duct portion 20, and air that has passed through the duct portion 20 is discharged at the rear end portion of the duct portion 20. A discharge opening 32 is formed.

  The fender liner 18 is provided with an opening having substantially the same shape as the inflow opening 30 of the duct portion 20, and the inflow opening 30 of the duct portion 20 is connected to the opening of the fender liner 18 (see FIGS. 1 and 3). ). An opening having substantially the same shape as the discharge opening 32 of the duct portion 20 is provided in the rear surface portion 12A of the rear bumper cover 12, and the discharge opening 32 of the duct portion 20 is connected to the opening of the rear surface portion 12A (FIG. 2). reference). That is, the inflow opening 30 of the duct portion 20 communicates with the rear wheel house 16 through the opening of the fender liner 18. Further, the discharge opening 32 of the duct portion 20 communicates with the outside of the rear portion 11 of the vehicle 10 through the opening of the rear surface portion 12 </ b> A of the rear bumper cover 12. Thereby, the air in the rear wheel house 16 flows into the duct portion 20 from the inflow opening 30, and the air passes through the duct portion 20 and from the discharge opening 32 to the rear side 12 </ b> A of the rear surface portion 12 </ b> A of the rear bumper cover 12. To be discharged.

  5-7, the bottom wall part (bottom wall) 26 which comprises the lower part of the duct part 20 has the lower wall part 34 used as the outer surface of the duct part 20, and the upper part of the lower wall part 34. As shown in FIG. And a serrated portion 36 provided. As shown in FIG. 7 and the like, the lower wall portion 34 is obliquely directed from the lower end portion on the inflow opening 30 side (vehicle front side) toward the upper end portion on the discharge opening 32 side (vehicle rear side) in a side view of the vehicle. It is arranged to incline. The saw-tooth shaped portion 36 includes a plurality of inclined surfaces 36A that rise obliquely at an inclination angle larger than that of the lower wall portion 34 from the vehicle front side toward the vehicle rear side in a vehicle side view, and the rear side of the adjacent inclined surfaces 36A. A stepped portion 36B connecting the upper end portion and the front lower end portion. In other words, each inclined surface 36A is arranged so as to rise upward from the front side of the vehicle toward the rear side of the vehicle in a side view of the vehicle, and the stepped portion 36B is disposed between the adjacent inclined surfaces 36A. It is arranged along the vertical direction. The plurality of inclined surfaces 36A as viewed from the side of the vehicle rise in an oblique direction along the lower wall portion 34 as the lower end portion on the vehicle front side and the upper end portion on the vehicle rear side move from the vehicle front side to the vehicle rear side. Are arranged to be.

  As shown in FIG. 6, the duct portion 20 has a side wall 25 on the outer side in the vehicle width direction that is longer on the vehicle lower side than a side wall 24 on the inner side in the vehicle width direction. In the vehicle front-rear direction view (vehicle front view), the plurality of inclined surfaces 36A are inclined at a position along the vehicle width direction so as to descend downward from the vehicle width direction inner side to the vehicle width direction outer side. The angle between the line along the vehicle width direction of the inclined surface 36 </ b> A and the horizontal line in the vehicle front-rear direction view (vehicle front view) is set to θ °.

  As shown in FIGS. 5 to 7, an inclined surface 36 </ b> A is provided at a position on the vehicle front side where the height of each inclined surface 36 </ b> A is the lowest at the lower portion of the side wall 25 on the outer side in the vehicle width direction of the duct portion 20. A drain hole 38 is formed through which drained muddy water and the like are discharged. That is, the duct portion 20 is provided with a hole portion 38 at a position on the vehicle front side at the vehicle width direction outer side end portion of each inclined surface 36A, and the hole portion 38 communicates with the outside. Thereby, the muddy water or the like trapped on the inclined surface 36A flows to the outside in the vehicle width direction and the vehicle front side where the height of the inclined surface 36A is the lowest, and is discharged from the hole 38 to the outside. Yes.

  In the duct portion 20 of the present embodiment, the hole 38 is provided in the lower portion of the side wall 25 at the outer end of the inclined surface 36A in the vehicle width direction. You may provide the hole which opens to the side and a vehicle side.

  Next, the operation and effect of this embodiment will be described.

  A cylindrical duct portion 20 is provided along the vehicle front-rear direction on the inner side in the vehicle width direction of the side surface portion 12B of the rear bumper cover 12, and the inflow opening 30 at the front end portion of the duct portion 20 is the opening of the fender liner 18. The discharge opening 32 of the duct portion 20 is connected to the opening of the rear surface portion 12 </ b> A of the rear bumper cover 12. As a result, air in the rear wheel house 16 flows into the duct portion 20 from the inflow opening 30, and further air passes through the duct portion 20 and from the discharge opening 32 to the rear side of the rear surface portion 12 </ b> A of the rear bumper cover 12 (vehicle 10 To the outside of the rear part 11).

  As shown in FIG. 7, the bottom wall portion 26 of the duct portion 20 includes a plurality of inclined surfaces 36 </ b> A that rise in an oblique direction from the front side of the vehicle toward the rear side of the vehicle in a side view of the vehicle, and adjacent inclined surfaces 36 </ b> A. And a stepped portion 36B disposed between the sawtooth-shaped portion 36. Accordingly, when muddy water as a heavy material enters the duct portion 20 from the inflow opening 30 when the vehicle travels in rainy weather, for example, the muddy water is first inclined on the vehicle front side as indicated by an arrow A. It moves to the vehicle rear side along the surface 36A, gets over the upper end portion of the inclined surface 36A, and falls along the step portion 36B to the second inclined surface 36A on the vehicle rear side. And muddy water is discharged | emitted from the hole 38 outside by flowing in the position of the vehicle width direction outer side and the front-end part with the lowest height in 36 A of 2nd inclined surfaces. Further, as indicated by an arrow A, the muddy water that has moved to the vehicle rear side along the second inclined surface 36A gets over the upper end portion of the inclined surface 36A, and the third inclined surface 36A on the vehicle rear side. In the same manner, when the inclined surface 36A flows to the lowest position, it is discharged from the hole 38 to the outside.

  Thus, by providing a plurality of inclined surfaces 36A that rise from the front side of the vehicle to the rear side of the vehicle at the lower part of the duct portion 20, the muddy water flows to the lowest position of each inclined surface 36A and passes through the hole 38 to the outside. To be discharged.

  Further, since the inclined surface 36A is inclined so as to be inclined downward in the vehicle width direction along the vehicle width direction, the muddy water flows more smoothly toward the hole 38 and the muddy water stays in the duct portion 20. Can be reduced.

  Thereby, it is possible to suppress the muddy water from being scattered from the discharge opening 32 of the duct portion 20, and to suppress the dripping of the muddy water from the discharge opening 32 of the duct portion 20 to the rear surface portion 12 </ b> A of the rear bumper cover 12. Therefore, it can suppress that the rear-surface part 12A of the rear bumper cover 12 becomes dirty and the appearance deteriorates due to muddy water.

  Next, a second embodiment of the vehicle rear structure according to the present invention will be described with reference to FIGS. 8 and 9. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 8 and 9, in the vehicle rear portion structure of the present embodiment, a duct portion 50 as an example of an air passage portion is provided. The bottom wall portion (bottom wall) 52 of the duct portion 50 includes an inner lower wall portion 54A arranged to be inclined from the upper end portion on the inner side in the vehicle width direction toward the lower end portion slightly outside the central portion in the vehicle width direction, and the vehicle. And an outer lower wall portion 54B disposed to be inclined from the upper end portion in the width direction toward the lower end portion slightly outside the center portion in the vehicle width direction. The inclination angle of the inner lower wall portion 54A with respect to the horizontal line in the vehicle front-rear direction view (vehicle front view) is smaller than the inclination angle of the outer lower wall portion 54B with respect to the horizontal line.

  On the upper side of the inner lower wall portion 54A and the outer lower wall portion 54B, steps disposed between a plurality of inclined surfaces 36A that rise obliquely from the vehicle front side toward the vehicle rear side and the adjacent inclined surfaces 36A. A sawtooth-shaped part 36 provided with a part 36B is provided. In the vehicle front-rear direction view (vehicle front view), the plurality of inclined surfaces 36A are inclined at a position along the vehicle width direction so as to descend downward from the vehicle width direction inner side to the vehicle width direction outer side (see FIG. 9). The outer lower wall portion 54B is formed with a drain hole 56 through which muddy water flowing through the inclined surface 36A is discharged at a position on the vehicle front side where the height of each inclined surface 36A is the lowest.

  In such a duct portion 50, when muddy water as a heavy material enters the duct portion 50 from the inflow opening 30 when the vehicle travels in rainy weather, the muddy water is applied to any one of the plurality of inclined surfaces 36A. When trapped, the muddy water flows to the position on the outer side in the vehicle width direction and at the front end where the inclined surface 36A has the lowest height. And it is discharged | emitted outside from the hole part 56 formed in the outer side lower wall part 54B. Thereby, it can suppress that muddy water splashes from the discharge opening 32 of the duct part 50, and suppresses dripping of muddy water from the discharge opening 32 of the duct part 50 to the rear surface part 12A (see FIG. 2) of the rear bumper cover 12. can do.

  Next, a third embodiment of the vehicle rear portion structure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st and 2nd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, in the vehicle rear portion structure of the present embodiment, a duct portion 70 as an example of an air passage portion is provided. In this duct part 70, the sawtooth shape part 72 is changed compared with the duct part 50 shown in FIG.8 and FIG.9. Specifically, the duct portion 70 is provided with a sawtooth shape portion 72 above the inner lower wall portion 54A and the outer lower wall portion 54B (see FIG. 8), and the sawtooth shape portion 72 is located on the vehicle front side. A plurality of inclined surfaces 72A and 72B that rise in an oblique direction from the vehicle rear side to the vehicle rear side, and step portions (not shown) arranged between the inclined surfaces 72A and 72B adjacent in the vehicle front-rear direction. Yes. The saw-toothed portion 72 has an inclined surface 72A and an inclined surface 72B formed in a substantially V shape in the vehicle width direction when viewed in the vehicle front-rear direction (vehicle front view). That is, the inclined surface 72A is arranged to be inclined from the upper end portion on the inner side in the vehicle width direction toward the lower end portion slightly outside the central portion in the vehicle width direction, and the inclined surface 72B is formed from the upper end portion on the outer side in the vehicle width direction. It is arranged so as to be inclined toward the lower end portion slightly outside the central portion in the vehicle width direction. The vehicle width direction inclination angle with respect to the horizontal line of the inclined surface 72A in the vehicle longitudinal direction view (vehicle front view) is set to be smaller than the vehicle width direction inclination angle with respect to the horizontal line of the inclined surface 72B. Yes.

  In such a duct part 70, when muddy water as a heavy material enters the duct part 70 when the vehicle travels in rainy weather, the muddy water is applied to any one of the plurality of inclined surfaces 72A and 72B. When trapped, the muddy water flows to the middle position in the vehicle width direction where the height of the inclined surface 72A and the inclined surface 72B is the lowest. And it is discharged | emitted outside from the hole 56 formed in the front-end part of the inclined surface 72B. Thereby, it can suppress that muddy water scatters from the discharge opening 32 (refer FIG. 8) of the duct part 70, and the rear surface part 12A (refer FIG. 2) of the rear bumper cover 12 from the discharge opening 32 of the duct part 70 can be suppressed. Muddy water drooping can be suppressed.

  Next, a fourth embodiment of the vehicle rear portion structure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st-3rd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, in the vehicle rear portion structure of the present embodiment, a duct portion 90 as an example of an air passage portion is provided. The duct part 90 is obtained by inverting the duct part 20 shown in FIG. Specifically, the side wall 92 on the inner side in the vehicle width direction of the duct portion 90 is formed longer on the vehicle lower side than the side wall 94 on the outer side in the vehicle width direction. The bottom wall portion 96 of the duct portion 90 includes a lower wall portion 98 formed so as to have an upward slope from the vehicle width direction inner side to the vehicle width direction outer side in the vehicle front-rear direction view (vehicle front view). And a saw-tooth shaped portion 100 disposed above the wall portion 98.

  The saw-tooth shaped portion 100 includes a plurality of inclined surfaces 100A that rise in an oblique direction from the vehicle front side toward the vehicle rear side. When viewed from the front and rear of the vehicle (viewed from the front of the vehicle), the inclined surface 100A is inclined at a position along the vehicle width direction so as to have a downward slope from the outer side in the vehicle width direction toward the inner side in the vehicle width direction. A drain hole 38 is formed in the lower portion at a position on the vehicle front side where the height of each inclined surface 100A is the lowest.

  In such a duct portion 90, when muddy water as a heavy material enters into the duct portion 90 from the inflow opening 30 when the vehicle travels in rainy weather, the muddy water enters any one of the plurality of inclined surfaces 100A. When trapped, the muddy water flows to the position inside the vehicle width direction and the front end portion where the height of the inclined surface 100A is the lowest, and is discharged to the outside through the hole 38. Thereby, it can suppress that muddy water splashes from the discharge opening 32 of the duct part 90, and suppresses dripping of muddy water from the discharge opening 32 of the duct part 90 to the rear surface part 12A (see FIG. 2) of the rear bumper cover 12. can do.

  In the first to fourth embodiments, the shapes and inclination angles of the plurality of inclined surfaces provided in the sawtooth shape portion of the duct portion can be appropriately changed without departing from the gist of the present invention.

  In the first to fourth embodiments, the lower wall portion is provided on the lower side of the sawtooth shape portion of the duct portion. However, the present invention is not limited to this, and only the sawtooth shape portion is provided without providing the lower wall portion. May be.

  Further, in the first to fourth embodiments, the duct portion is a cylindrical body whose cross section along the vehicle width direction is long in the vehicle vertical direction, but the shape of the cylindrical body constituting the duct portion can be changed. .

  Moreover, in 1st-4th embodiment, although the cylindrical duct part was provided in the vehicle width direction inner side of the side part 12B of the rear bumper cover 12, it is not limited to this structure, For example, the side part of the rear bumper cover 12 The duct portion may be formed by the inner wall of 12B and the panel member.

10 Vehicle 11 Rear 12 Rear bumper cover 12A Rear surface (rear area)
16 Rear wheel house 20 Duct section (air passage section)
26 Bottom wall (bottom wall)
32 Discharge opening 36 Sawtooth-shaped part 36A Inclined surface 38 Hole part 50 Duct part (air passage part)
56 hole 70 duct part (air passage part)
72 Sawtooth portion 72A Inclined surface 72B Inclined surface 90 Duct portion (air passage portion)
96 Bottom wall (bottom wall)
100 Sawtooth shape part 100A inclined surface

Claims (2)

An air passage portion that is provided inside the rear bumper cover and on the vehicle rear side of the rear wheel house, and discharges air in the rear wheel house from the discharge opening provided in a rear region of the rear bumper cover to the vehicle rear side;
A saw-tooth shaped portion that is provided on a bottom wall that constitutes a lower portion of the air passage portion, and that is configured by a plurality of inclined surfaces that obliquely rise from the vehicle front side into the air passage portion toward the vehicle rear side;
A hole for drainage formed at a position where the height of the inclined surface is the lowest,
A vehicle rear structure having:   The vehicle rear portion structure according to claim 1, wherein the inclined surface is disposed so as to be inclined in at least one of the vehicle width directions when viewed in the vehicle front-rear direction.

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