JP2010030465A - Vehicle rear part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a recessed portion at a part of a spoiler, and to improve aerodynamic characteristics while ensuring a machining property of a back door by decreasing a recessed portion area on a back door upper surface. <P>SOLUTION: The vehicle rear part structure is equipped with the back door 20 opening/closing a rear opening portion S provided at a rear part of a vehicle body, and the spoiler 30 provided on the back door 20 and extended in a vehicle width direction. The back door 20 has the back door upper surface portion 21 generally continuing to a roof portion supper surface 11 of the vehicle body, and the spoiler 30 has a spoiler upper surface portion 31 generally continuing to the back door upper surface portion 21. At a center portion in the vehicle width direction, the recessed portion 40 extended in a vehicle fore-and-aft direction over the roof portion upper surface 11, the back door upper surface portion 21, and the spoiler upper surface portion 31 is provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rear structure of a vehicle.

It is generally known that aerodynamic characteristics are improved when the rear portion of the vehicle is tilted downward as it goes rearward in the vehicle front-rear direction. However, the appearance may deteriorate depending on the design of the car. In order to solve such a problem, in Patent Document 1, a concave portion that extends from the roof to the rear gate and continues in the vehicle front-rear direction is formed only at the center in the vehicle width direction, so that it does not fall down in a side view of the vehicle. The aerodynamic characteristics are improved while maintaining the design.
JP 2007-1521 A

  However, the back door body is generally made of metal, and it is not easy to form the recesses by pressing or the like. In order to improve aerodynamic characteristics, a certain length and depth are required for the recess, which further deteriorates the workability of the back door upper surface.

  Accordingly, an object of the present invention is to improve the aerodynamic characteristics while ensuring the workability of the back door by forming a recess in a part of the spoiler and reducing the recess area on the upper surface of the back door.

  In order to solve the above-described problem, in the present invention, a vehicle having a back door that opens and closes an opening provided in a rear portion of a vehicle body, and a spoiler provided in the back door and extending in the vehicle width direction. In the rear structure, the back door has a back door upper surface portion that is substantially continuous with the roof portion upper surface of the vehicle body, and the spoiler has a spoiler upper surface portion that is substantially continuous with the back door upper surface portion. There is provided a rear structure of a vehicle having a concave portion extending in the vehicle front-rear direction over the roof portion upper surface, the back door upper surface portion, and the spoiler upper surface portion at a central portion.

  According to the present invention, the recess is formed in the upper surface portion of the spoiler that is a part of the spoiler, and the recess region of the upper surface portion of the back door is reduced, so that the aerodynamic characteristic is ensured while ensuring the workability of the back door. Can be improved.

  In the present invention, the back door main body including the back door upper surface part may be made of metal, and the spoiler may be made of resin. According to this configuration, it is possible to improve the workability of the back door body while suppressing deterioration of the workability of the spoiler.

  The recess may have a deeper depth as it goes rearward in the vehicle front-rear direction. According to this configuration, the aerodynamic characteristics can be further improved.

  Further, in the present invention, the back door has a rear surface portion that is continuous with the upper surface portion of the back door and inclined downward in the rear of the vehicle, and the spoiler projects away from the rear surface portion to the rear of the vehicle. In addition, the concave portion of the upper surface portion of the spoiler may be formed over the entire vehicle front-rear direction of the upper surface portion of the spoiler. According to this configuration, the spoiler projects away from the rear surface portion and protrudes toward the rear of the vehicle, and the concave portion is formed over the entire area in the vehicle front-rear direction of the upper surface portion of the spoiler. Without being attached to the vehicle, it can be passed through the vehicle efficiently.

  ADVANTAGE OF THE INVENTION According to this invention, a recessed part is formed in a part of spoiler and the aerodynamic characteristic can be improved, ensuring the workability of a back door by making the recessed part area | region of a back door upper surface small.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiment described below is an example as means for realizing the present invention, and the present invention can be applied to a modified or modified embodiment described below without departing from the spirit of the present invention.

[About overall vehicle configuration]
FIG. 1 is a side view of a vehicle according to an embodiment of the present invention, and FIG. 2 is a top view of the vehicle according to an embodiment. 3 is a perspective view showing the rear structure of the vehicle, and FIG. 4 is a rear view showing the rear structure of the vehicle.

  In this embodiment, this vehicle is a five-door hatchback type vehicle having front doors 1, 2, rear doors 3, 4 and a back door 20.

  The vehicle includes a roof portion 10 that extends in the vehicle front-rear direction and forms a roof portion upper surface 11 that serves as an upper surface of a passenger compartment, a back door 20 that opens and closes a rear opening S provided in a rear portion of the vehicle body, and a back door 20. And a spoiler 30 extending in the vehicle width direction.

  The roof portion 10 is formed by pressing a metal material such as a thin steel plate. Further, the roof portion 10 has flanges provided on the vehicle width direction side end portions 11a and 11b of the roof portion upper surface 11, and these flanges are the left and right vehicle body side portions (for example, the side body outer panels 7 and 8). Are joined by welding or the like to a flange provided on the upper side in the vertical direction. Thereby, the roof part 10 forms the rear opening part S with a vehicle body side part and a vehicle body lower part.

  In the rear opening S, a flip-up back door 20 is disposed (see FIG. 5). The back door 20 has a back door upper surface portion 21 that forms a flat surface substantially continuous with the roof portion upper surface 11. The back door 20 is not limited to a flip-up type door having a rotation axis extending in the vehicle width direction, and may be, for example, a kannon type door having a rotation axis extending in the vertical direction.

  The spoiler 30 has a spoiler upper surface portion 31 that is fixed to the upper portion of the window W1 of the back door 20 and forms a plane that is substantially continuous with the back door upper surface portion 21.

  The roof portion upper surface 11, the back door upper surface portion 21, and the spoiler upper surface portion 31 are formed with a recess 40 that extends substantially continuously in the vehicle front-rear direction at the center in the vehicle width direction. In addition, the recessed part provided in the roof part upper surface 11 is called the 1st recessed part 41, the recessed part provided in the back door upper surface part 21 is called the 2nd recessed part 42, and the recessed part provided in the spoiler upper surface part 31 is called the 3rd recessed part 43. And

[Details of rear structure of vehicle]
FIG. 5 is an exploded perspective view of the rear structure of the vehicle. 6A is a cross-sectional view taken along the line AA in FIG. 5, FIG. 6B is a cross-sectional view taken along the line BB in FIG. 5, and FIG. It is sectional drawing along CC line.

  The roof portion 10 is formed by bending a vertical wall portion 12 formed by bending downward in the vertical direction at an end portion 11c of the roof portion upper surface 11 on the vehicle longitudinal direction rear side, and bending the vertical wall portion 12 rearward in the vehicle longitudinal direction. A seat surface portion 13 for attaching the door hinges H1 and H2, a rain gutter portion 14 that is provided behind the seat surface portion 13 in the vehicle front-rear direction and prevents rainwater from entering the vehicle compartment, and a vehicle front-rear direction of the rain gutter portion 14 A seal portion 15 is provided at the rear end portion 14 a and ensures sealing between the back door 20 and the roof portion 10.

  The vertical wall portion 12 is formed by bending, for example, 90 degrees or more using a cam structure mold in order to prevent the back door upper surface portion 21 from interfering with the vehicle front-rear direction front end portion 21a (that is, the hem portion). Is done. The rain gutter part 14 is formed by bending the vehicle front-rear direction rear end part 13a of the seat surface part 13 into, for example, a U-shaped cross section. As the seal part 15, for example, an elastic member such as rubber or urethane can be used.

  The back door 20 has a back door body formed of an outer panel 22 and an inner panel 23, and the door hinges H1 and H2 fixed to the inner panel 23 with bolts or the like are fixed to the seat surface portion 13 with bolts or the like above the window W1. By this, it attaches so that rotation with respect to a vehicle body is possible. The door hinges H <b> 1 and H <b> 2 are each attached to the outside of the recess 40 in the vehicle width direction.

  The outer panel 22 and the inner panel 23 are formed by pressing a metal material such as a thin steel plate, and the back door 20 is formed by hem processing. Therefore, the back door upper surface portion 21 substantially continuous with the roof portion upper surface 11 is formed by the outer surface of the outer panel 22. The outer panel 22 in the upper part of the window W1 is provided with a plurality of holes 24 for attaching the stud bolts 32 and the fasteners 33. Further, the back door 20 has a rear surface portion 25 that is continuous with the back door upper surface portion 21 and is inclined rearward and downward in the vehicle.

  The spoiler 30 is formed by, for example, blow processing a resin material such as polypropylene. A stud bolt 32 is embedded in the spoiler 30 during blow molding. The spoiler 30 is fixed to the upper portion of the window W1 of the back door 20 by fitting the fastener 33 into the hole 24 and fastening the stud bolt 32 with a nut from the inner wall side of the outer panel 22 of the back door 20. The inner panel 23 of the back door 20 is provided with a work hole (not shown) used when the stud bolt 32 is fastened with a nut. The work hole is closed with a cap after the work. The spoiler 30 is separated from the rear surface portion 25 of the back door 20 and protrudes rearward of the vehicle.

  Thus, the spoiler 30 is firmly fixed while performing the attachment work of the spoiler 30 by performing the spoiler 30 by the combination of the coupling means including the fastener 33 and the fastening means including the stud bolt 32 and the nut. It becomes possible.

  The concave portion 40 is substantially continuous with the center in the vehicle width direction of the roof portion upper surface 11, the back door upper surface portion 21 and the spoiler upper surface portion 31, and is inclined at a certain inclination angle rearward and downward in the vehicle front-rear direction (that is, as it goes rearward). The bottom surface of the recess 40 is inclined so as to be lowered), and the depth is further increased toward the rear in the front-rear direction of the vehicle. The recess 40 is preferably formed so that the inclination angle is approximately 10 degrees.

  In the present embodiment, the first recess 41 is formed behind the center of the roof top surface 11 in the vehicle front-rear direction. Note that the position of the front end of the first recess 41 can be arbitrarily set according to the length of the recess 40, the inclination angle, and the like. The second recessed portion 42 formed in the back door upper surface portion 21 is formed over the entire area between the front end portion 21a and the rear end portion 21b in the vehicle front-rear direction of the back door upper surface portion 21, and both end portions 21a, 21b. Forms the open end. Similarly, the 3rd recessed part 43 is formed over the whole region between the vehicle front-back direction front-end part 31a and the rear-end part 31b of the spoiler upper surface part 31, and both edge parts 31a and 31b form an opening edge part. .

  As a result, the first to third recesses 41, 42, 43 are substantially continuous in the vehicle front-rear direction, and the traveling wind is taken in from the opening end on the front side of the first recess 41, and the opening end on the rear side of the third recess 43 It is possible to escape the traveling wind from the rear part. Further, the spoiler 30 is separated from the rear surface portion 25 of the back door 20 and protrudes toward the rear of the vehicle, and the third concave portion 43 is formed over the entire area of the upper surface portion 31 of the spoiler. Adhering to the rear surface portion 25 of the back door 20 can be prevented. As a result, the traveling wind can be efficiently passed to the rear of the vehicle body without being stagnated in the vicinity of the vehicle body, so that the aerodynamic characteristics can be improved.

  As described above, according to the present embodiment, the recess 40 is formed in the spoiler upper surface portion 31 that is a part of the spoiler 30, and the recess area of the back door upper surface portion 21 is reduced, so that the workability of the back door 20 is ensured. However, aerodynamic characteristics can be improved. Moreover, since the resin-made spoiler was employ | adopted for the spoiler 30, the workability of the metal back door 20 can be improved, suppressing that the workability of the spoiler 30 is deteriorated. Furthermore, since it formed deeply as it goes back in the vehicle front-rear direction, the molding depth of the back door 20 can be reduced while increasing the molding depth of the spoiler 30 with less influence of moldability.

  In this embodiment, the concave portion 40 is inclined at a constant inclination angle, but may be formed such that the inclination angle increases toward the rear in the vehicle front-rear direction. In this case, among the recesses 40, the inclination angles of the first recesses 41 and the second recesses 42 provided on the front side in the vehicle front-rear direction are set to relatively small angles that do not deteriorate the press formability, and the vehicle front-rear direction About the inclination angle of the 3rd recessed part 43 provided in a back side, since the spoiler 30 is shape | molded by the blow process of resin, it is possible to set a big inclination angle, without minding moldability.

1 is a side view of a vehicle according to an embodiment of the present invention. 1 is a top view of a vehicle according to an embodiment. It is a perspective view which shows the rear part structure of a vehicle. It is a rear view which shows the rear part structure of a vehicle. It is a disassembled perspective view of the rear part structure of a vehicle. (A) is sectional drawing along the AA line of FIG. 5, (b) is sectional drawing along the BB line of FIG. 5, (c) is CC line of FIG. FIG.

Explanation of symbols

S rear opening 10 roof part 11 roof part upper surface 20 back door 21 back door upper surface part 30 spoiler 31 spoiler upper surface part 40 recess

Claims (4)

A back door that opens and closes an opening provided at the rear of the vehicle body;
A spoiler provided in the back door and extending in the vehicle width direction;
In the rear structure of the vehicle with
The back door has a back door top surface portion substantially continuous with the roof top surface of the vehicle body;
The spoiler has a spoiler upper surface portion substantially continuous with the back door upper surface portion;
A rear structure of a vehicle having a concave portion extending in a vehicle front-rear direction across the roof portion upper surface, the back door upper surface portion, and the spoiler upper surface portion at a vehicle width direction central portion.   The rear structure of the vehicle according to claim 1, wherein the back door main body including the back door upper surface portion is made of metal, and the spoiler is made of resin.   The rear structure of the vehicle according to claim 1, wherein the recess has a depth that increases toward the rear in the vehicle front-rear direction. The back door is continuous with the back door upper surface portion, and has a rear surface portion inclined downward in the rear of the vehicle,
The spoiler protrudes rearward of the vehicle away from the rear surface portion;
The rear structure of the vehicle according to any one of claims 1 to 3, wherein the concave portion of the upper surface portion of the spoiler is formed over the entire region of the upper surface portion of the spoiler in the vehicle front-rear direction.

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