JP2013071462A - Rear structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rear structure of a vehicle, configured to enhance functions of discharging air from a rear wheel house and discharging air in a vehicle compartment to the outside of the vehicle.SOLUTION: A rear outlet duct 20 is disposed inside of a rear bumper cover 12 and on the vehicle rear side of the rear wheel house 16, as an air passage part for discharging the air in the rear wheel house 16 to the vehicle rear side of a rear bumper cover 12. An opening part 38 is formed on a side wall 28B on the inside in a vehicle width direction of the rear outlet duct 20, and a vent duct 40 is integrally disposed on a side wall 28B surrounding the opening part 38. The air in the vehicle compartment 60 flows from a passage part 43 of the vent duct 40 through the opening part 38 into the rear outlet duct 20, and is discharged to the outside of the vehicle through the rear outlet duct 20.

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 toward the rear portion of the rear bumper through the passage portion. With this structure, the air resistance is reduced by discharging the air in the rear wheel house toward the rear bumper of the vehicle.

Japanese Patent Laid-Open No. 7-25369

  Conventionally, the rear bumper has been provided with a discharge port for discharging the air in the vehicle interior to the outside of the vehicle, but as in Patent Document 1, a passage portion for discharging the air in the rear wheel house is formed. Then, there is a possibility that the discharge port and the passage portion interfere with each other. For example, when the inner diameter dimension of the passage portion and the discharge space of the discharge port cannot be secured sufficiently, there is a possibility that the respective functions are deteriorated.

  In consideration of the above facts, an object of the present invention is to obtain a vehicle rear structure that can improve both the function of discharging air in the rear wheel house and the function of discharging air in the vehicle interior to the outside of the vehicle.

  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 An air passage portion for discharging the vehicle interior to the rear of the vehicle, and a discharge passage portion that communicates via an opening formed in the wall portion of the air passage portion and discharges the air in the vehicle interior to the outside of the vehicle.

  According to a second aspect of the present invention, in the vehicle rear portion structure according to the first aspect, the opening is formed on a side wall in the vehicle width direction of the air passage portion, and the discharge passage portion is connected to the side wall. It is what.

  According to a third aspect of the present invention, in the vehicle rear structure according to the first or second aspect, a fragile portion that is broken by an input of a collision load is formed at a portion where the air passage portion and the discharge passage portion are connected. It is what has been.

  According to the first aspect of the present invention, the air passage portion is provided inside the rear bumper cover and on the vehicle rear side of the rear wheel house, and the air in the rear wheel house flows into the air passage portion and the rear bumper cover It is discharged to the rear of the vehicle through a discharge opening provided in the rear area. The air passage portion communicates with the discharge passage portion through an opening formed in the wall portion of the air passage portion. Air in the vehicle interior flows into the discharge passage portion, and air further flows into the wall of the air passage portion. From the opening formed in the section, the air flows into the air passage section and is discharged out of the vehicle. As a result, the inside dimension of the air passage portion sufficient for ventilation can be secured and the air in the rear wheel house can be discharged to the rear of the vehicle by the air passage portion, and the air in the vehicle compartment can also be opened from the discharge passage portion. The air flows through the air passage portion and is discharged out of the vehicle together with the air flowing through the air passage portion. For this reason, indoor ventilation can also be performed sufficiently.

  According to the second aspect of the present invention, the opening is formed in the side wall in the vehicle width direction of the air passage portion, the discharge passage portion is connected to the side wall, and the air passage portion is discharged to the inside in the vehicle width direction. Even if the passage portion is provided, the inner dimension of the air passage portion (particularly the inner dimension in the vehicle width direction) can be sufficiently secured. As a result, air inside the vehicle compartment passes through the opening formed in the side wall in the vehicle width direction of the air passage portion from the discharge passage portion through the opening formed in the vehicle width direction while ensuring the inside dimension of the air passage portion sufficient for ventilation. It is exhausted with the flowing air to the outside of the vehicle, and the room can be well ventilated.

  According to the third aspect of the present invention, the fragile portion is formed at a portion where the air passage portion and the discharge passage portion are connected, and the fragile portion is broken by the input of the collision load from the rear portion of the vehicle, and the air passage By separating the part and the discharge passage part, deformation of the body body can be suppressed.

  According to the vehicle rear structure according to the present invention, it is possible to improve both the function of discharging the air in the rear wheel house and the function of discharging the air in the vehicle interior to the outside of the vehicle.

1 is a perspective view of a vehicle to which a vehicle rear structure according to an embodiment is applied as viewed from the vehicle rear side. It is a perspective view which shows the structure of the rear outlet duct duct inside the rear bumper cover used for the vehicle rear part structure shown in FIG. 1, and the vicinity of a vent duct in the state seen from the vehicle front side. It is a perspective view which shows the structure of the rear outlet duct duct and vent duct vicinity shown in FIG. 2 in the state seen from the vehicle rear side. FIG. 4 is a transverse sectional view taken along line 2-2 in FIG. 3. It is a perspective view which shows the structure of the rear outlet duct duct and vent duct shown in FIG. 2 in the state seen from the vehicle width direction inner side. It is a perspective view which shows the structure of the rear outlet duct duct and vent duct vicinity used for the vehicle rear part structure which concerns on a comparative example in the state seen from the vehicle rear side. It is a cross-sectional view along line 4-4 in FIG.

  Hereinafter, an 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 as viewed from the vehicle rear side. FIG. 2 is a perspective view of the vicinity of a rear bumper at the rear of the vehicle to which the vehicle rear structure according to the present embodiment is applied, and FIG. 3 illustrates the vehicle according to the present embodiment. The vicinity of the rear outlet duct duct and the vent duct used in the rear structure is shown in a perspective view seen from the vehicle rear side. 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. 2 and 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.

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

  As shown in FIGS. 3 to 5, the rear outlet duct 20 is formed of a cylindrical body, and includes a duct outer 26 disposed on the outer side in the vehicle width direction, and a duct inner 28 disposed on the inner side in the vehicle width direction. Yes. The duct outer 26 is formed in a substantially hat shape in cross section along the vehicle width direction, and includes a pair of flange portions 26A extending in the vehicle vertical direction. The duct inner 28 is formed in a substantially hat shape in cross section along the vehicle width direction, and includes a pair of flange portions 28A extending in the vehicle vertical direction. The pair of flange portions 26A of the duct inner 28 and the pair of flange portions 28A of the duct inner 28 are arranged in a surface contact state, and the flange portion 26A and the flange portion 28A are joined by adhesion or the like. Thereby, the rear outlet duct 20 is formed into a cylindrical body along the vehicle front-rear direction, and a substantially rectangular passage section whose cross section along the vehicle width direction is long in the vehicle vertical direction is provided inside the rear outlet duct 20. 21 is formed.

  An inflow opening 30 through which the air in the rear wheel house 16 flows is formed at the front end of the rear outlet duct 20, and the air that has passed through the rear outlet duct 20 is formed at the rear end of the rear outlet duct 20. A discharge opening 32 for discharging the is formed.

  As shown in FIG. 4, the fender liner 18 is provided with an opening 18 </ b> A having substantially the same shape as the inflow opening 30 of the rear outlet duct 20, and the duct inner 28 and the duct outer 26 near the inflow opening 30 are provided in the fender liner 18. It is connected to the wall surface of the opening 18A.

  A recess 12C that is recessed toward the front side of the vehicle is formed at a position where the rear surface portion 12A of the rear bumper cover 12 is adjacent to the side surface portion 12B (see FIGS. 1 and 3). An opening 12D having substantially the same shape as the discharge opening 32 of the rear outlet duct 20 is provided on the inner wall surface of the recess 12C, and the duct inner 28 and the duct outer 26 near the discharge opening 32 are formed on the wall surface of the opening 12D of the recess 12C. It is connected.

  That is, the inflow opening 30 of the rear outlet duct 20 communicates with the rear wheel house 16 through the opening 18A of the fender liner 18. Further, the discharge opening 32 of the rear outlet duct 20 communicates with the outside (outside of the vehicle) of the rear portion 11 of the vehicle 10 through the opening 12D of the recess 12C of the rear bumper cover 12. Thereby, the air in the rear wheel house 16 flows into the rear outlet duct 20 (passage portion 21) from the inflow opening 30, and the air passes through the rear outlet duct 20 (passage portion 21) from the discharge opening 32 to the rear bumper cover. 12 is discharged toward the rear side of the rear surface portion 12A.

  As shown in FIGS. 3 to 5, the duct inner 28 includes a side wall 28 </ b> B extending along the vehicle vertical direction on the inner side in the vehicle width direction, and the side wall 28 </ b> B extends in the vehicle front-rear direction in the vehicle plan view. It is arranged almost straight. A substantially rectangular opening 38 is formed at a middle portion of the side wall 28B in the vehicle front-rear direction and the vehicle vertical direction as viewed from the side of the vehicle. On the side wall 28B around the opening 38, a vent duct 40 is provided as an example of a discharge passage for discharging the air in the vehicle compartment 60 to the outside of the vehicle. The vent duct 40 includes a rectangular tubular body 42 that protrudes inward in the vehicle width direction from the side wall 28B. In this embodiment, the cylindrical body 42 and the duct inner 28 are integrally formed, and the cylindrical body 42 and the side wall 28B of the duct inner 28 are formed continuously.

  As shown in FIG. 5, the cylindrical body 42 includes an upper wall 42A along the vehicle front-rear direction, a vertical wall 42B extending from the vehicle front end portion of the upper wall 42A to the vehicle lower side, and a vehicle rear of the upper wall 42A. A vertical wall 42C extending from the end to the vehicle lower side, and a vertical wall 42B and a lower wall 42D connecting the lower ends of the vertical wall 42C are provided. A slit-shaped opening 44 as an example of a fragile portion is provided along the vehicle front-rear direction at the bent portion between the side wall 28B and the upper wall 42A of the duct inner 28 and the bent portion between the side wall 28B and the lower wall 42D of the duct inner 28. It has been. Two slit-shaped openings 44 are formed in the front and rear of the vehicle. In addition, a slit-like opening 46 as an example of a fragile portion extends along the vehicle vertical direction at the bent portion of the side wall 28B and the vertical wall 42B of the duct inner 28 and the bent portion of the side wall 28B and the vertical wall 42C of the duct inner 28. Is provided. When a collision load is input from the rear portion 11 of the vehicle 10, the gap between the slit-shaped openings 44 and 46 in the bent portion between the side wall 28 </ b> B of the duct inner 28 and the cylindrical body 42 is broken, and the rear outlet duct 20 and the vent duct are broken. By separating 40, the deformation of the body body is suppressed.

  Further, holes 48 are provided above and below the slit-like opening 46 at the bent portion between the side wall 28B and the vertical wall 42B of the duct inner 28 and at the bent portion between the side wall 28B and the vertical wall 42C of the duct inner 28. The hole 48 is provided with claw portions 50 extending from the vertical walls 42B and 42C in the direction of the side wall 28B (see FIG. 4).

  As shown in FIGS. 4 and 5, the vent duct 40 includes a passage portion 43 through which the air in the passenger compartment 60 is discharged inside a cylindrical body 42, and the passage portion 43 is a side wall of the duct inner 28. It communicates with the passage 21 of the rear outlet duct 20 through an opening 38 formed in 28B. A plurality of louvers 52 are spanned between the vertical wall 42B and the vertical wall 42C (passage portion 43) of the cylindrical body 42 at a predetermined interval above and below the vehicle. The louver 52 is attached in an oblique direction so that the outer end in the vehicle width direction is on the lower side and the inner end in the vehicle width direction is on the upper side (see FIG. 5). As a result, the air in the passenger compartment 60 is discharged outward in the vehicle width direction (arrow C direction) along the inclined surfaces of the plurality of louvers 52 of the passage portion 43. Further, the air flows into the passage portion 21 of the rear outlet duct 20 through the opening portion 38 formed in the side wall 28B of the duct inner 28, and is discharged along with the air flowing to the rear side of the vehicle along the passage portion 21 of the rear outlet duct 20. 32 is discharged outside the vehicle (in the direction of arrow B).

  As shown in FIG. 4, the body body is provided with an inner panel 62 on the inner side in the vehicle width direction of the side surface portion 12 </ b> B of the rear bumper cover 12. A vertical wall 62A is formed along the longitudinal direction of the vehicle. The vertical wall 62A is provided with an opening 62B at a position facing the opening 38 of the side wall 28B of the duct inner 28. The claw portion 50 provided on the cylindrical body 42 of the vent duct 40 is locked to the edge of the opening 62B in the vertical wall 62A of the inner panel 62. Thus, the vent duct 40 is attached to the vertical wall 62A of the inner panel 62. Further, the side wall 28 </ b> B of the duct inner 28 is joined to the vertical wall 62 </ b> A of the inner panel 62 by an adhesive 64.

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

  A cylindrical rear outlet duct 20 is provided in the vehicle width direction inner side of the side surface portion 12B of the rear bumper cover 12 along the vehicle front-rear direction, and the inflow opening 30 at the front end portion of the rear outlet duct 20 is formed on the fender liner 18. The opening 18A communicates with the opening 18A, and the discharge opening 32 of the rear outlet duct 20 communicates with the opening 12D of the recess 12C of the rear bumper cover 12. As a result, as shown in FIG. 4, the air in the rear wheel house 16 flows from the inflow opening 30 into the passage portion 21 of the rear outlet duct 20 as indicated by an arrow A, and further, the air is indicated by an arrow B. It passes through the passage portion 21 of the rear outlet duct 20 and is discharged from the discharge opening 32 to the rear side (outside the vehicle) of the rear surface portion 12A of the rear bumper cover 12.

  A cylindrical body 42 of a vent duct 40 is integrally provided on the side wall 28B of the duct inner 28 of the rear outlet duct 20, and the passage of the vent duct 40 is provided through an opening 38 formed on the side wall 28B of the duct inner 28. The portion 43 communicates with the passage portion 21 of the rear outlet duct 20. Due to the ventilation in the rear outlet duct 20 when the air from the rear wheel house 16 flows in the rear outlet duct 20 (passage portion 21), the inside of the rear outlet duct 20 becomes negative pressure. The interior of the vehicle interior 60 in the vehicle width direction of the rear outlet duct 20 has a positive pressure, so that the air in the vehicle interior 60 passes through the passage portion 43 of the vent duct 40 from the opening 38 as indicated by an arrow C. It becomes easy to flow into the rear outlet duct 20. For this reason, it becomes easy to ventilate the air in the passenger compartment 60 from the vent duct 40 to the outside of the vehicle through the rear outlet duct 20, and the arousing performance is improved. Therefore, the interior of the passenger compartment 60 can be sufficiently ventilated.

  In addition, an opening 38 is provided in the side wall 28B on the inner side in the vehicle width direction of the rear outlet duct 20, and the tubular body 42 of the vent duct 40 is integrally provided on the side wall 28B around the opening 38, whereby the rear outlet duct 20 is provided. The inside dimension of the passage portion 21 (particularly, the dimension of the passage portion 21 in the vehicle width direction) can be sufficiently secured. For this reason, the ventilation performance when the air in the rear wheel house 16 flows into the passage portion 21 of the rear outlet duct 20 and is discharged to the vehicle rear side can be improved. Therefore, both the function of discharging the air in the rear wheel house 16 to the rear side of the rear bumper cover 12 and the function of discharging the air in the passenger compartment 60 to the outside of the vehicle can be improved.

  A plurality of slit-like openings 44 and 46 are formed along the vehicle front-rear direction and the vehicle vertical direction at the bent portion between the cylindrical body 42 of the vent duct 40 and the side wall 28B of the duct inner 28. Thus, when a collision load is input from the rear portion 11 of the vehicle 10, the gap between the slit-shaped openings 44 and 46 in the bent portion between the side wall 28 </ b> B of the duct inner 28 and the cylindrical body 42 is broken, and the rear outlet duct 20. And the vent duct 40 are separated, the deformation of the body of the vehicle 10 can be suppressed. Thereby, the repair cost can be reduced.

  6 and 7 show a rear outlet duct 100 and a vent duct 110 used in the vehicle rear structure according to the comparative example.

  As shown in FIGS. 6 and 7, the rear outlet duct 100 includes a duct outer 26 disposed on the outer side in the vehicle width direction, and a duct inner 102 disposed on the inner side in the vehicle width direction. The duct inner 102 is formed in a substantially hat shape in cross section along the vehicle width direction, and includes a pair of upper and lower flange portions 102A. The rear outlet duct 100 is formed into a cylindrical body by joining a pair of upper and lower flange portions 102A of the duct inner 102 and a pair of upper and lower flange portions 26A of the duct outer 26. A concave portion 104 that is recessed outward in the vehicle width direction is formed in an intermediate portion of the side wall 102B of the duct inner 102 in the vehicle front-rear direction (see FIG. 7). A passage portion 101 through which air flows is provided in the rear outlet duct 100 along the vehicle front-rear direction, and air in the rear wheel house 16 flows into the passage portion 101 of the rear outlet duct 100 from the inflow opening 30. It is discharged from the discharge opening 32.

  As shown in FIG. 7, a vent duct 110 that exhausts the air in the passenger compartment 60 to the outside of the vehicle is provided inside the rear outlet duct 100 in the vehicle width direction. The vent duct 110 includes a cylindrical body 112 in which a passage portion 113 through which air flows is disposed along the vehicle width direction. A discharge port 114 through which air is discharged from the passage portion 113 of the vent duct 110 is provided at a position facing the concave portion 104 of the duct inner 102. The air in the passenger compartment 60 flows into the passage portion 113 of the vent duct 110, and the air is discharged from the discharge port 114 as shown by an arrow D and hits the concave portion 104 of the duct inner 102. Further, the air is discharged in the vehicle front-rear direction along the side wall 102B of the duct inner 102 as indicated by an arrow E.

  In such a vehicle rear structure, in order to secure a gap between the outlet 114 of the vent duct 110 and the rear outlet duct 100, the duct inner 102 is provided with a recess 104 that is recessed outward in the vehicle width direction. Is disposed in the direction of closing the outlet 114 of the vent duct 110, the ventilation performance of the air in the passenger compartment 60 by the vent duct 110 may be reduced.

  Further, since the recess 104 of the duct inner 102 is provided at a position facing the discharge port 114 of the vent duct 110, compared to the rear outlet duct 20 of the present embodiment, the passage portion 101 of the rear outlet duct 100 in the vehicle width direction. Dimensions (inner dimensions) become smaller. For this reason, the cross-sectional area of the channel | path part 101 becomes small and ventilation | gas_flowing performance may fall.

  On the other hand, in this embodiment, the opening part 38 is provided in the side wall 28B inside the vehicle width direction of the rear outlet duct 20, and the cylindrical body 42 of the vent duct 40 is integrally formed on the side wall 28B around the opening part 38. By providing, the dimension (internal dimension) of the passage part 21 of the rear outlet duct 20 in the vehicle width direction can be sufficiently ensured. For this reason, the ventilation performance when the air in the rear wheel house 16 flows into the passage portion 21 of the rear outlet duct 20 and is discharged to the vehicle rear side can be improved. In addition, in order to let the air in the passenger compartment 60 flow into the passage portion 43 of the vent duct 40 and further flow into the passage portion 21 of the rear outlet duct 20 from the opening portion 38 and discharge it together with the air flowing through the passage portion 21 to the outside of the vehicle. The inside of the passenger compartment 60 can be sufficiently ventilated.

  In the present embodiment, the cylindrical rear outlet duct 20 having a long section in the vehicle width direction is provided in the vehicle width direction. However, the shape of the cylindrical body constituting the rear outlet duct can be changed. Moreover, the shape of the cylindrical body of the vent duct 40 can also be changed.

  In this embodiment, the duct inner 28 of the rear outlet duct 20 and the tubular body 42 of the vent duct 40 are integrally formed. However, the present invention is not limited to this, and the rear outlet duct 20 and the vent duct 40 are separated. The vent duct 40 may be connected to the wall around the opening 38 of the rear outlet duct 20 by bonding or the like. That is, in the “discharge passage portion connected to the side wall of the air passage portion” of the present invention, the air passage portion and the discharge passage portion are integrally formed, and the air passage portion and the discharge passage portion are formed separately. It is the meaning including the case where it joins.

  In the present embodiment, the opening 38 is formed in the side wall 28B on the inner side in the vehicle width direction of the rear outlet duct 20 and the vent duct 40 is provided in the side wall 28B. However, the present invention is not limited to this, and the rear outlet duct 20 The vent duct 40 may be provided by forming an opening in another wall (for example, an upper wall or a lower wall).

  In the present embodiment, the slit-shaped openings 44 and 46 are provided in the bent portion between the side wall 28B of the duct inner 28 and the cylindrical body 42 of the vent duct 40. However, the present invention is not limited to this, and the side wall 28B of the duct inner 28 The bent portion of the vent duct 40 and the tubular body 42 may be provided with a thin portion with a reduced plate thickness as a fragile portion. Thereby, the vicinity of the thin portion is broken by the input of the collision load, and the vent duct 40 and the rear outlet duct 20 can be separated.

  Furthermore, in the present embodiment, the cylindrical rear outlet is provided along the vehicle front-rear direction on the inner side in the vehicle width direction of the rear bumper cover 12, but the present invention is not limited thereto, and the rear bumper cover and the inner side in the vehicle width direction are disposed. A duct (air passage portion) may be formed using a panel.

10 Vehicle 11 Rear 12 Rear bumper cover 16 Rear wheel house 20 Rear outlet duct (air passage section)
28B Side wall 32 Discharge opening 38 Opening part 40 Vent duct (discharge passage part)
44 Slit-like opening (fragile part)
46 Slit-like opening (fragile part)
60 compartment

Claims (3)

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 discharge passage portion which is communicated through an opening formed in the wall portion of the air passage portion and discharges the air in the vehicle interior to the outside of the vehicle;
A vehicle rear structure having: The opening is formed on the side wall in the vehicle width direction of the air passage portion,
The vehicle rear portion structure according to claim 1, wherein the discharge passage portion is connected to the side wall.   The vehicle rear part structure according to claim 1 or 2, wherein a fragile portion that is broken by an input of a collision load is formed at a portion where the air passage portion and the discharge passage portion are connected.

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