JP2005059781A - Vehicle rear body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide vehicle rear body structure having a back door 1, a rear bumper 11 projecting to the rearward of a surface of the back door 1, and a body seal part 25 placed above an upper wall part 15 of the center of the rear bumper 11 and extended in a vehicle lateral direction so as to fill up clearance between a back surface 5 of a lower end part 3 of the back door 1 and a rear body 21, with an improved appearance, and preventing the body seal part 25 from being damaged at the time of light collision. <P>SOLUTION: A finisher 31 made of resin is provided at the lower end part 3 of the back door 1 so that a rear surface 27 is nearly flush. A shock absorbing part 37 extending in the vehicle lateral direction at a front side of a lower wall part 35 of the finisher 31 is recessed, and a lower surface 45 opposed to the rear bumper 11 of the shock absorbing part 37 is placed above the body seal part 25. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rear body structure of a vehicle having a back door, and more particularly to a structure of a finisher provided at a lower end portion of a back door.

  Conventionally, a rear body structure of a vehicle having a back door and a rear bumper protruding rearward from the surface of the back door is known. For example, in Patent Document 1, a concave portion is formed in the vehicle width direction center portion of the U-shaped bumper in plan view so that the upper wall portion of the central portion is lower than the upper wall portions of the left and right end portions, There has been disclosed a structure in which the lower end portion of the back door is allowed to enter and exit in accordance with the opening and closing of the back door. A body seal portion that extends in the vehicle width direction is usually provided between the rear surface of the lower end portion of the back door and the rear vehicle body so as to close the gap.

JP 2001-71838 A

  However, in the conventional rear vehicle body structure of the vehicle, the upper wall portion of the central portion of the rear bumper remains in a recessed state, so that the appearance is poor.

  Therefore, there is a need to provide a resin finisher so as to cover the surface of the lower end portion of the back door and to form the rear surface of the finisher and the rear bumper substantially flush with each other.

  However, when the finisher is provided at the lower end of the back door, if a vehicle or the like collides lightly from the rear of the vehicle body, the body seal portion is damaged by the pressing force of the rear bumper and the finisher due to the impact force, and the repair cost becomes high. There was a problem.

  The present invention has been made in view of the above points, and the object of the present invention is to improve the appearance of the finisher by improving the structure of the finisher and to prevent the body seal portion from being damaged during a light collision. There is to prevent.

  In order to achieve the above object, in the present invention, the finisher is provided with an impact absorbing portion that absorbs an impact during a light collision.

  Specifically, in the invention of claim 1, the back door, the rear bumper protruding rearward from the surface of the back door, the rear bumper positioned above the upper wall portion, A rear vehicle body structure including a body seal portion extending in the vehicle width direction so as to close a gap between the vehicle body and the rear vehicle body is an object.

  A resin finisher is provided so as to cover the surface of the lower end portion of the back door, and the rear surface of the finisher and the rear bumper is formed substantially flush with the lower wall portion facing the rear bumper of the finisher. On the side, it has a shock absorbing part that is recessed so as to extend in the vehicle width direction, and only the rear side is configured to be close to the rear bumper, and the surface of the shock absorbing part that faces the rear bumper is from the body seal part. Is also located above.

  In the invention of claim 2, the upper wall portion of the rear bumper is formed with a recessed portion whose central portion is lower than the left and right end portions so that the finisher can enter and exit in accordance with opening and closing of the back door.

  According to the first aspect of the invention, the finisher and the rear bumper form a rear surface that is substantially flush with the finisher, so that the appearance is good.

  In addition, since the lower wall portion of the finisher has a shock absorbing portion that is recessed on the front side, a rear bumper that has been deformed by a shock during a light collision of the vehicle body is fitted into the space created by the shock absorbing portion, and the rear bumper Such pressing force is released. Therefore, the rear bumper does not press the body seal part. In addition, since the surface where the finisher and the back door are in contact is limited above the body seal portion, the pressing force applied to the finisher at the time of a light vehicle collision does not propagate to the back door in the vicinity of the body seal portion and Deformation of the door can be prevented. Therefore, it is possible to prevent the body seal portion from being damaged during a light collision, and as a result, it is possible to reduce the repair cost.

  According to the second aspect of the present invention, since the recessed portion is formed in the upper wall portion of the rear bumper, the finisher can enter and leave the recessed portion according to the opening and closing of the back door. As a result, the position of the upper end of the rear vehicle body corresponding to the lower end of the back door when the back door is closed can be made lower than the left and right ends of the upper wall of the rear bumper. The rear vehicle body and the rear bumper do not get in the way when an article is taken in and out of the rear passenger compartment.

  Further, since the finisher is provided at the lower end portion of the back door so as to correspond to the recessed portion, the finisher and the rear bumper form a substantially continuous rear surface, and the appearance is good.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

(Embodiment 1)
1 and 2 show a rear body structure of a vehicle provided with a finisher 31 according to Embodiment 1 of the present invention. On the rear end surface of the vehicle body, the back door 1 is disposed such that the upper end portion thereof is hinged (not shown) and can be rotated in the vertical direction. Further, a resin rear bumper 11 having a space 13 for absorbing an impact at the time of a light collision is provided below the back door 1 in a closed state.

  Specifically, through holes 22, 22,... Are provided in the rear end surface of the rear vehicle body 21 so as to be aligned in the vehicle width direction. The rear bumper 11 is attached to the rear vehicle body 21 by engaging fasteners 23, 23,... Such as screws and fasteners with the through holes 22, 22,. Also protrudes backwards.

  As shown in FIG. 3, the rear bumper 11 has a U-shape in plan view. Among the upper wall portions, the central upper wall portion 15 at the central portion in the vehicle width direction has the central upper wall portion 15 on the left and right sides. A recessed portion 17 is formed so as to be lower than the left and right upper wall portions 16 at the end. Thus, the finisher 31 can enter and exit the recessed portion 17 of the rear bumper 11 according to the opening and closing of the back door 1.

  As shown in FIG. 2, the gap between the rear upper body 21 of the lower end portion 3 of the back door 1 and the rear vehicle body 21 above the central upper wall portion 15 of the rear bumper 11, that is, the upper surface of the recessed portion 17, is A body seal portion 25 extending in the vehicle width direction is provided so as to close the gap. The body seal portion 25 is also provided at the left and right edges of a substantially rectangular tailgate opening (not shown) of the rear vehicle body 21 that is continuous with the body seal portion 25 and is opened and closed by the back door 1. The base end side (the front side of the vehicle body) is fitted to a protrusion 26 provided on the rear vehicle body 21. For this reason, rainwater does not enter through the gap between the back surface 5 of the lower end 3 of the back door 1 and the rear vehicle body 21.

  A resin finisher 31 is provided at the lower end 3 of the back door 1 so as to cover the surface thereof. The finisher 31 in the present embodiment is a blow-molded product, and a space 33 is formed inside the finisher 31 so as to absorb an impact at the time of a light collision. The finisher 31 is provided at the lower end portion 3 of the back door 1 so that the rear surface 27 of the finisher 31 and the rear bumper 11 is formed substantially flush with each other.

  Reference numeral 28 denotes a trim provided on the vehicle compartment side of the back door 1. Further, as indicated by phantom lines in FIG. 2, a floor board 29 is disposed in the vicinity of the body seal portion 25 of the rear vehicle body 21, and luggage or the like is placed on the floor board 29. Yes.

  As shown in FIG. 4, as a feature of the present invention, the lower wall portion 35 facing the rear bumper 11 of the finisher 31 has a shock absorbing portion 37 that is recessed forwardly to extend in the vehicle width direction. have. That is, as shown in FIG. 2, by forming the shock absorbing portion 37, an escape space 38 is formed between the surface of the lower end portion 3 of the back door 1 and the lower portion of the finisher 31, and The wall 35 is configured so that only the rear side is close to the rear bumper 11. Further, only the upper half wall portion 39 above the escape space 38 constituting the back wall of the finisher 31 is in contact with the lower end portion 3 of the back door 1.

  As shown in FIG. 4, a mounting seat surface 41 is recessed at the center in the vertical direction of the upper half wall portion 39 of the finisher 31. A fastener 23 is mounted between the mounting seat surface 41 and the plate-shaped mounting bracket 43 so that the tip protrudes. The fastener 23 is provided on the upper half wall 39 of the finisher 31 side by side in the vehicle width direction. On the other hand, as shown in FIG. 3, the lower end portion 3 of the back door 1 is provided with through holes 7, 7,. The fasteners 23, 23,... Of the finisher 31 are inserted into and engaged with the through holes 7, 7,..., So that the finisher 31 is attached and fixed to the lower end portion 3 of the back door 1.

  The lower surface 45 of the shock absorbing portion 37 facing the rear bumper 11 is located above the body seal portion 25. That is, the position of the body seal portion 25 is located between the central upper wall portion 15 provided with the recessed portion 17 of the rear bumper 11 and the lower surface 45 of the finisher 31.

-Action-
Next, the operation of the rear body structure of the vehicle according to the present embodiment will be described with reference to FIGS. As shown in FIG. 2, for example, consider a case where the vehicle C has lightly collided (rejected) from the rear part of the vehicle body (the direction of the arrow shown in the figure). In such a case, as shown in FIG. 5, the vehicle body is deformed by the impact force.

  The central upper wall portion 15 of the rear bumper 11 pressed by the vehicle C is fitted into an escape space 38 formed by the impact absorbing portion 37 of the finisher 31 while being deformed. For this reason, the pressing force applied to the rear bumper 11 is not transmitted to the body seal portion 25 of the rear vehicle body 21.

  On the other hand, the pressing force applied to the finisher 31 is transmitted from the upper half wall portion 39 to the back door 1. However, since the upper half wall portion 39 of the finisher 31 is in contact with the back door 1 above the body seal portion 25, the pressing force is not transmitted to the body seal portion 25.

  Therefore, even if the vehicle C collides lightly from the rear, the rear bumper 11 and the finisher 31 are simply deformed, and the body seal portion 25 is not damaged.

-Effect of Embodiment 1-
According to the rear vehicle body structure of the present embodiment, the finisher 31 is provided at the lower end portion 3 of the back door 1 so that the rear surface 27 of the finisher 31 and the rear bumper 11 are substantially flush with each other, and the lower wall portion 35 of the finisher 31 is provided. A shock absorbing portion 37 extending in the vehicle width direction is recessed in the front side of the vehicle, and a surface of the shock absorbing portion 37 facing the rear bumper 11 is provided above the body seal portion 25. For this reason, it is possible to obtain a rear vehicle body structure that has a good appearance and can protect the body seal portion 25 in a light collision.

  Further, the rear bumper 11 is formed with a recessed portion 17 so that the central upper wall portion 15 is lower than the left and right upper wall portions 16. For this reason, when the article is taken in and out of the rear passenger compartment, the rear vehicle body 21 and the rear bumper 11 do not get in the way, while the finisher 31 and the rear bumper 11 form a rear surface 27 that is substantially flush with each other and looks good. .

(Embodiment 2)
FIG. 6 shows a second embodiment of the present invention (note that the same parts as those in FIGS. 1 to 5 are denoted by the same reference numerals and detailed description thereof is omitted), and the above-described embodiment is different in the shape of the finisher 131. Different from 1.

  That is, the finisher 131 of the rear body structure of the vehicle according to the present embodiment is made of a resin injection molded product. Due to the limitations of injection molding, the structure is slightly different from the finisher 31 of the first embodiment.

  Specifically, the finisher 131 has a curved curved rear wall portion 132, and the rear wall portion 132 and the rear bumper 11 form a substantially flush rear surface 27. Further, the upper end portion of the rear wall portion 132 is close to the back door 1, while the reinforcing hollow rib portion 135 provided at the lower end portion is close to the rear bumper 11.

  Further, on the upper side of the rear wall 132 on the back door 1 side (the front side of the vehicle body), a plurality of cross-sectional cogs are spaced at positions corresponding to the through holes 7, 7,. Character-shaped attachment portions 139, 139,... Are integrally formed so as to protrude. The finisher 131 is attached to the lower end portion 3 of the back door 1 by engaging the fasteners 23 provided so that the front end portions of the attachment portions 139 protrude from the through holes 7, 7.

  The shock absorbing portion 37 is configured by the lower surface 45 of the mounting portion 139 and the rear wall portion 132, and the same operational effects as those of the first embodiment can be obtained also in the rear body structure of the vehicle according to the present embodiment.

(Other embodiments)
The present invention may be configured as follows with respect to the first and second embodiments. That is, the back door may be hinged to the right end of the substantially rectangular tailgate opening of the rear vehicle body, and may be disposed on the rear vehicle body so as to be pivotable in the front-rear direction.

  Further, the rear bumper does not have a concave portion on the upper wall portion, and the same effects as those of the first and second embodiments can be obtained even when the rear bumper has a substantially flush shape.

  As described above, the present invention is useful for the finisher of the back door in the rear body structure of the vehicle.

It is a perspective view which shows the rear part vehicle body structure in the back door closed state which concerns on Embodiment 1 of this invention. It is the II-II sectional view taken on the line of FIG. FIG. 2 is a view corresponding to FIG. 1 before the finisher is attached. It is the perspective view which looked at the finisher of FIG. 3 from IV direction. FIG. 3 is a view corresponding to FIG. 2 illustrating a state when the vehicle collides. FIG. 3 is a view corresponding to FIG. 2 illustrating a rear body structure of a vehicle according to a second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back door 3 Lower end part 5 Back surface 11 Rear bumper 15 Center upper wall part 17 Recessed part 21 Rear vehicle body 25 Body seal part 27 Rear surface 31, 131 Finisher 35 Lower wall part 37 Shock absorption part 45 Lower surface

Claims (2)

The rear door, a rear bumper that protrudes rearward from the surface of the back door, and a vehicle that is positioned above the upper wall portion of the rear bumper and closes the gap between the back surface of the lower end of the back door and the rear vehicle body. In the rear vehicle body structure including a body seal portion extending in the width direction,
A resin finisher is provided so as to cover the surface of the lower end of the back door,
The rear surfaces of the finisher and the rear bumper are formed substantially flush with each other,
The lower wall portion facing the rear bumper of the finisher has an impact absorbing portion recessed to extend in the vehicle width direction on the front side thereof, and is configured so that only the rear side is close to the rear bumper.
A rear body structure of a vehicle, wherein a surface of the shock absorbing portion facing the rear bumper is located above the body seal portion. In the rear body structure of the vehicle according to claim 1,
A rear vehicle body structure in which a recess is formed in the upper wall portion of the rear bumper so that the finisher can enter and exit in accordance with opening and closing of the back door.

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