JP2018149945A - Vehicle body rear part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body rear part structure which enables a design surface of a rear pillar to be formed with good visual quality and can provide sufficient rigidity to the rear pillar.SOLUTION: A vehicle body rear part structure of the invention includes a rear pillar 10 at a vehicle body rear part. The rear pillar 10 has: a rear pillar outer 31 which is disposed at the outer side in a vehicle width direction and forms an outer surface of the rear pillar 10; and a rear pillar inner 11 disposed at the inner side of the rear pillar outer 31 in the vehicle width direction. The rear pillar inner 11 has an expansion part 18 which expands to the rear pillar outer 31 side. The expansion part 18 is formed continuing in a vertical direction of the rear pillar 10 and has a contact part 20b, which contacts with an inner surface of the rear pillar outer 31, over the vertical direction of the rear pillar 10.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle body rear structure having a rear pillar.

  2. Description of the Related Art Conventionally, as a rear pillar of an automobile, a hollow one in which an outer member disposed on the outside of the vehicle and an inner member disposed on the inside of the vehicle are joined to each other to form a closed cross section is known (for example, Patent Documents). 1). In the vehicle body rear structure having such a rear pillar, in order to provide surface rigidity to the outer member, for example, a U-shaped reinforcing member may be attached to the inner side surface of the outer member by spot welding or the like.

JP 2014-169046 A

  However, in the conventional vehicle body rear structure (for example, refer to Patent Document 1), the outer member of the rear pillar often forms the design surface of the automobile as it is. Therefore, the attachment trace of the reinforcing member to the inner side surface of the outer member may resonate with the outer surface side of the outer member, thereby reducing the appearance of the design surface.

  The subject of this invention is providing the vehicle body rear part structure which can give the rear pillar a sufficient rigidity while being able to form the design surface of a rear pillar beautifully.

  A vehicle body rear structure that solves the above problems includes a rear pillar at the rear of the vehicle body, and the rear pillar is disposed on the outer side in the vehicle width direction to form the outer surface of the rear pillar, and on the inner side in the vehicle width direction of the rear pillar outer. A rear pillar inner disposed, the rear pillar inner has a bulging portion that bulges toward the rear pillar outer side, and the bulging portion is formed continuously in the vertical direction of the rear pillar. In addition, a contact portion that contacts the inner surface of the rear pillar outer is provided in the vertical direction of the rear pillar.

  According to the present invention, the design surface of the rear pillar can be formed with good appearance, and sufficient rigidity can be imparted to the rear pillar.

It is a perspective view of the vehicle body rear part structure C of this invention. It is the elements on larger scale of the rear pillar of FIG. 1 which removed the anchor patch. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is the elements on larger scale corresponding to the IV section of FIG. It is the elements on larger scale of the V section of FIG. It is VI-VI sectional drawing of FIG. It is the elements on larger scale near the anchor patch of FIG. It is VIII-VIII sectional drawing of FIG.

  Next, a mode for carrying out the present invention (this embodiment) will be described in detail. The vehicle body rear part structure in this embodiment has a rear pillar at the rear part of the vehicle body. In the following description of the rear structure of the vehicle body, the front, rear, left, right and up directions are directions seen from the driver seated on the vehicle, and are based on the front, back, left, right, up and down directions indicated by arrows in FIG. FIG. 1 is a perspective view of a vehicle body rear structure C according to the present embodiment. Specifically, FIG. 1 is a perspective view of a vehicle body rear structure C having a rear pillar 10 when the vehicle interior is viewed from an oblique front on the right side of the vehicle through an opening of a right rear door. In each drawing referred to in the following description, the description of the door attached to the vehicle body and the garnish attached to the vehicle interior side is omitted for convenience of drawing.

As shown in FIG. 1, the vehicle body rear structure C according to the present embodiment includes a pair of rear pillars 10 disposed on the left and right sides of the tailgate 9a. A lower end portion of the rear pillar 10 is connected to a rear end panel 9b joined to a rear wheel house inner (not shown). The upper end portion of the rear pillar 10 is connected to the roof portion 9c.
Each of such a pair of rear pillars 10 has a symmetrical structure along the front-rear direction at the center of the vehicle body. Therefore, in the following description, only the left rear pillar 10 will be described, and the description of the right rear pillar 10 will be omitted.
In FIG. 1, reference numeral 51 is a reinforcing member, and reference numeral 61 is an anchor patch.

FIG. 2 is a partially enlarged view of the rear pillar 10 of FIG. 1 with the anchor patch 61 removed. 3 is a cross-sectional view taken along the line III-III in FIG.
As shown in FIG. 2, the rear pillar 10 includes a rear pillar inner 11 and a rear panel inner 21 that are formed by bent plates, respectively, on the vehicle interior side (on the front side of the paper surface of FIG. 2). Further, as shown in FIG. 3, the rear pillar 10 includes a rear pillar outer 31 and a rear garter 41 each formed of a bent plate. Further, as shown in FIG. 1, the rear pillar 10 includes a reinforcing member 51 and an anchor patch 61 of a seat belt (not shown).

<Rear pillar inner>
As shown in FIG. 2, the rear pillar inner 11 is divided into three parts, a rear pillar inner lower 11a, a rear pillar inner middle 11b, and a rear pillar inner upper 11c, which are arranged in this order from the lower side toward the upper side. Yes. Further, these three parts are overlapped with each other with a predetermined overlap margin. In the following description, when these rear pillar inner lower 11a, rear pillar inner middle 11b, and rear pillar inner upper 11c do not need to be particularly distinguished, they are simply referred to as “rear pillar inner 11”.

  As shown in FIG. 3, the rear pillar inner 11 is, as viewed from above, a vehicle interior side wall 12 extending in the vehicle body front / rear direction at the rear part of the vehicle body front / rear direction, and the vehicle width direction outer side (see FIG. 3 is provided with a first vertical wall 13 that is bent and extends to the left of the arrow 3. Further, the rear pillar inner 11 is bent from the outer edge of the first vertical wall 13 (the left side arrow in FIG. 3) to the front side in the vehicle longitudinal direction and extends from the front edge of the outer side wall 14 to the vehicle. A second vertical wall 15 is provided which is bent inward in the width direction (right side of the arrow in FIG. 3) and extends opposite to the first vertical wall 13. Incidentally, the length of the second vertical wall 15 in the vehicle width direction is shorter than the length of the first vertical wall 13 in the vehicle width direction. In addition, the said length of the 2nd vertical wall 15 in this embodiment is set to the length of about 1/3 to 1/2 of the said length of the 1st vertical wall 13. FIG.

  A flange 16 a that is connected to a flange 42 b of the rear garter 41 described later is formed at the rear edge of the passenger compartment side wall 12 in the rear pillar inner 11. Further, a flange 16b connected to a flange 22a of the rear panel inner 21 described later is formed on the inner edge (the right edge shown by the arrow in FIG. 3) of the second vertical wall 15 in the rear pillar inner 11.

Such a rear pillar inner 11 forms a bulging portion 18 that swells outward in the vehicle width direction between the front edge of the passenger compartment side lateral wall 12 and the inner edge of the second vertical wall 15 in the vehicle body front-rear direction. The bulging portion 18 is formed continuously in the vertical direction of the rear pillar 10 (in the direction perpendicular to the paper surface of FIG. 3). Such a bulging portion 18 increases the support rigidity of the rear pillar 10 against a thrust load from a rear wheel (not shown).
In the present embodiment, the first vertical wall 13 and the second vertical wall 15 that form the bulging portion 18 have a distance between the first vertical wall 13 and the second vertical wall 15 at a portion facing each other. (Spacing) becomes shorter from the inner side to the outer side in the vehicle width direction. The first vertical wall 13 and the second vertical wall 15 facing each other are preferably arranged so as to form an isosceles trapezoidal hypotenuse with the outer horizontal wall 14 as an upper base when viewed from above.

The flange 16b of the rear pillar inner 11 and the flange 22a of the rear panel inner 21 are joined to each other at this lap portion. The joint portion 20a extends in the vertical direction of the rear pillar inner middle 11b (see FIG. 2).
Incidentally, the flange 16b of the rear pillar inner 11 in this embodiment is overlapped with the outer surface in the vehicle width direction of the flange 22a of the rear panel inner 21.

  Further, as shown in FIG. 2, the rear pillar inner middle 11b has an extending portion 17 that extends toward the rear panel inner 21 at the upper end portion of the rear pillar inner middle 11b. In FIG. 2, the extending portion 17 is indicated by a hidden line (dotted line).

FIG. 4 is an enlarged view corresponding to the IV portion of FIG. 2, and is a view including a fracture surface of the rear panel inner 21 showing a state of the extending portion 17 by cutting out a part of the rear panel inner 21.
As shown in FIG. 4, the extension part 17 of the rear pillar inner middle 11b is formed so as to partially extend from the flange 16b to the front side in the vehicle longitudinal direction at the upper end of the rear pillar inner middle 11b. The planar shape of the extending portion 17 is a substantially right trapezoidal shape with the front side edge as the upper base and the lower side edge as the hypotenuse.

  Such an extension part 17 is joined to the rear panel inner 21 by spot welding or the like. Of course, the portion corresponding to the flange 16b at the upper end of the rear pillar inner middle 11b is also joined to the rear panel inner 21. That is, in the upper end portion of the rear pillar inner middle 11b, the bonding area to the rear panel inner 21 is larger than that of the other rear pillar inner middle 11b portion.

<Rear panel inner>
As shown in FIG. 3, the rear panel inner 21 is connected to the front edge of the rear pillar inner 11 with its rear edge overlapped. The rear panel inner 21 forms a part of the front side of the rear pillar 10. As shown in FIG. 2, the rear panel inner 21 also forms a frame on the vehicle compartment side of the vehicle body window W.

Returning to FIG. 3, the rear panel inner 21 is configured to have a plate that faces the second vertical wall 15 of the rear pillar inner 11. Further, the flange 22a is formed on the inner edge of the rear panel inner 21 (the right edge shown by the arrow in FIG. 3). A flange 22b to be joined to a flange 35a of the rear pillar outer 31 described below is formed on the outer edge of the rear panel inner 21 (the left side edge in FIG. 3).
The rear panel inner 21 and the second vertical wall 15 of the rear pillar inner 11 in the present embodiment form isosceles trapezoidal oblique sides with the lap portion of the flange 16b and the flange 22a as the upper base when viewed from above. It is preferable to arrange so as to.

As shown in FIG. 2, upper and lower two-stage beads 23 are formed at the lower end of the rear panel inner 21 on the rear pillar inner 11 side.
FIG. 5 is a partially enlarged view of a portion V in FIG.
As shown in FIG. 5, each bead 23 extends in parallel from the rear edge of the rear panel inner 21 toward the front.

Of the two upper and lower beads 23, the upper bead 23 is shorter than the lower bead 23. Such a bead 23 is formed so as to be close to the joint portion 20a between the rear pillar inner 11 and the rear panel inner 21 described above. In addition, the bead 23 in this embodiment is set to the position where the base end part set to the rear edge of the rear panel inner 21 overlaps the joint part 20a.
That is, as shown in FIG. 2, the bead 23 of the rear panel inner 21 and the extending portion 17 of the rear pillar inner 11 are connected via the joint portion 20 a and arranged separately in the vertical direction of the rear pillar 10. Will be.

<Rear pillar outer>
As shown in FIG. 3, the rear pillar outer 31 is disposed on the outer side in the vehicle width direction of the rear pillar 10 (left side of the arrow in FIG. 3). The rear pillar outer 31 forms a design surface in a side view of the vehicle body.

  The rear pillar outer 31 has a substantially flat surface 32 that extends while being displaced slightly inward in the vehicle width direction (right side of the arrow in FIG. 3) from the front side to the rear side in the vehicle longitudinal direction. The rear pillar outer 31 has a front curved wall 33 that bends inward in the vehicle width direction (right side of the arrow in FIG. 3) on the front side of the substantially flat surface 32 and extends toward the outer edge of the rear panel inner 21. . Further, the rear pillar outer 31 is folded back toward the front while being bent inward in the vehicle width direction (the right side of the arrow in FIG. 3) on the rear side of the substantially flat surface 32, and is formed on the rear edge of the rear garter 41 described later. It has a rear curved wall 34 extending toward it. A flange 35 a that is joined to the flange 22 b of the rear panel inner 21 is formed at the front edge of the front curved wall 33. Further, a flange 35b that is joined to a flange 42a of a rear garter 41, which will be described later, is formed on the front edge of the folded back curved wall 34.

<Rear Gata>
As shown in FIG. 3, the rear garter 41 is obliquely rearward rearward in the vehicle width direction while extending from the rear edge side of the passenger compartment side lateral wall 12 in the rear panel inner 21 toward the vehicle width direction outer side (left side of the arrow in FIG. 3). It is formed with the board body bent and extended toward. A flange 42b to be joined to the flange 16a of the rear pillar inner 11 is formed on the inner edge (the right edge shown by the arrow in FIG. 3) of the rear garter 41. This flange 42b is joined to the surface of the flange 16a on the outer side in the vehicle width direction (left side of the arrow in FIG. 3).

At the rear edge of the rear garter 41, the flange 42a joined to the flange 35b of the rear pillar outer 31 is formed as described above. The flange 42a is joined to the surface of the flange 35b on the outer side in the vehicle width direction (left side of the arrow in FIG. 3).
The rear garter 41 in this embodiment forms a substantially rear surface of the rear pillar 10. This rear surface has a shape in which the outer side in the vehicle width direction of a hatchback door (not shown) attached to the tailgate 9a (see FIG. 1) is accommodated.

<Rear pillar closed section>
As shown in FIG. 3, the rear pillar inner 11, the rear panel inner 21, the rear pillar outer 31, and the rear gutter 41 as described above form a hollow structure of the rear pillar 10 having a closed cross section.
Specifically, as shown in FIG. 3 including the III-III cross section of FIG. 2, the bulging portion 18 of the rear pillar inner 11 is in contact with the inner side surface (inner surface) of the rear pillar outer 31 in the vehicle width direction. Accordingly, the rear pillar 10 has two closed cross sections so as to be aligned in the vehicle body front-rear direction.
Note that the bulging portion 18 in the present embodiment will be described with reference to FIG. 2. The first vertical wall 13, the outer lateral wall 14, and the second wall 18 between the passenger compartment side lateral wall 12 and the flange 16 b. The vertical wall 15 is formed so as to be recessed toward the outer side in the vehicle width direction (the back side in FIG. 2).

  And the contact part 20b of the rear pillar inner 11 and the rear pillar outer 31 shown in FIG. 3 is formed over the up-down direction of the rear pillar 10, as shown in FIG. Incidentally, although not shown in the contact portion 20b, the rear pillar inner 11 (see FIG. 3) and the rear pillar outer 31 (see FIG. 3) are joined together by a crosslinkable mastic sealer such as polysulfide, polyurethane, or silicone. ing.

More specifically, as shown in FIG. 2, the upper end portion of the contact portion 20b is formed so as to overlap the lower end portion of a reinforcing member 51 described later. Incidentally, as will be described in detail later, the reinforcing member 51 is disposed on the inner side of the outer lateral wall 14 in the vehicle width direction. That is, the contact portion 20b and the reinforcing member 51 are disposed inside and outside through the outer lateral wall 14.
Therefore, as described above, the reinforcing member 51 and the abutting portion 20b are formed in the vertical direction of the rear pillar 10 by being formed so that the upper end portion of the abutting portion 20b and the lower end portion of the reinforcing member 51 overlap each other. It is formed continuously.

  Moreover, the lower end part of the contact part 20b is formed in the vicinity of the superposition | polymerization part 20c of the rear pillar inner lower 11a and the rear pillar inner middle 11b, as shown in FIG. Specifically, the lower end portion of the contact portion 20b in the present embodiment extends to the overlapping portion 20c of the rear pillar inner lower 11a and the rear pillar inner middle 11b.

<Reinforcing member>
As shown in FIG. 2, the reinforcing member 51 is a recess surrounded by the first vertical wall 13, the outer horizontal wall 14, and the second vertical wall 15 that is formed on the inner side in the vehicle width direction of the bulging portion 18 of the rear pillar inner 11. It is arrange | positioned so that it may extend in an up-down direction. In FIG. 2, reference numeral 13 a is a hole formed in the first vertical wall 13 of the rear pillar inner 11. This hole 13a is an insertion hole for a working tool when an anchor patch 61 (see FIG. 8) described later and the second vertical wall 15 of the rear pillar inner 11 are joined.

6 is a cross-sectional view taken along the line VI-VI in FIG.
As shown in FIG. 6, the reinforcing member 51 has a substantially L-shaped cross section.
The reinforcing member 51 is disposed in a corner portion 18a formed by the first vertical wall 13 and the outer lateral wall 14 of the rear pillar inner 11 on the inner side in the vehicle width direction (the right side of the arrow in FIG. 6). The reinforcing member 51 is disposed along the corner portion 18a formed so as to extend in the vertical direction of the rear pillar 10 (the vertical direction of the paper surface of FIG. 6).
As a result, the reinforcing member 51 is defined with a vertical wall 51a (front side surface in the longitudinal direction of the vehicle body) facing forward and a lateral wall 51b (inner side surface in the vehicle width direction) facing inward.
The reinforcing member 51 is joined to the first vertical wall 13 and the outer horizontal wall 14 of the rear pillar inner 11 by spot welding or the like.

<Anchor Patch>
FIG. 7 is a partially enlarged view of the vicinity of the anchor patch 61 of FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.
As described above, the anchor patch 61 is for attaching the anchor that supports a D ring or the like for inserting a seat belt (not shown) to the rear pillar 10.
As shown in FIG. 7, the anchor patch 61 in the present embodiment is formed of a bent plate.
The anchor patch 61 includes a main body portion 62, a pair of flange portions 63a and 63b that support the main body portion 62 on the rear pillar inner 11 side, and an extension portion 64 (anchor patch extension portion) extending from the main body portion 62. ) And. In FIG. 7, the flange portion 63a is indicated by a hidden line (dotted line).

As shown in FIG. 8, the main body 62 has a surface portion that is disposed so as to cover a concave portion formed on the inner side in the vehicle width direction so as to correspond to the bulging portion 18 of the rear pillar inner 11 from the inner side in the vehicle width direction. doing.
The main body 62 in the present embodiment includes an anchor mounting surface 65 disposed in a virtual plane that is substantially orthogonal to the extending direction of the inner surface of the second vertical wall 15 of the rear pillar inner 11 (the rear surface in the vehicle longitudinal direction). Joint surface portions 66a and 66b for joining the anchor mounting surface portion 65 to the flange portions 63a and 63b are provided. Incidentally, the anchor 67 is attached to the outer surface in the vehicle width direction of the anchor attachment surface portion 65 (the left side surface shown by the arrow in FIG. 8) by spot welding or the like.
The joint surface portion 66a is disposed between a flange portion 63a and an anchor attachment surface portion 65 described below, and the joint surface portion 66b is disposed between a flange portion 63b and an anchor attachment surface portion 65 described below.

The flange portion 63a is formed along the inner side surface of the second vertical wall 15 of the rear pillar inner 11, and is joined to the inner side surface by spot welding or the like.
The flange portion 63b is formed along the vehicle width direction inner side surface (the right side surface indicated by the arrow in FIG. 8) of the passenger compartment side wall 12 of the rear pillar inner 11, and is joined to the inner side surface by spot welding or the like.

As shown in FIG. 7, the extending portion 64 extends from the main body portion 62 obliquely upward outward in the vehicle width direction. Specifically, the extending portion 64 extends toward the reinforcing member 51 in a recess formed on the inner side in the vehicle width direction so as to correspond to the bulging portion 18 of the rear pillar inner 11.
A support plate portion 64 a that is bent so as to extend along the first vertical wall 13 of the rear pillar inner 11 is formed at the rear edge of the extending portion 64. The support plate portion 64a extends along the rear edge of the extending portion 64 to a vertical wall 51a (a front side surface in the vehicle body front-rear direction) that forms an L-shape of the reinforcing member 51.
The support plate portion 64a is joined to the first vertical wall 13 of the rear pillar inner 11 and the vertical wall 51a of the reinforcing member 51 by spot welding or the like.
In addition, a support section 64b bent along a lateral wall 51b (inner side surface in the vehicle width direction) that forms an L-shape of the reinforcing member 51 is provided at the distal end of the extending portion 64 that extends toward the reinforcing member 51. . The support piece 64b is joined to the lateral wall 51b of the reinforcing member 51 by spot welding or the like.

<Closed section with anchor patch>
As shown in FIG. 8, the anchor patch 61 extends in the longitudinal direction of the vehicle body so as to straddle the bulging portion 18 on the inner side in the vehicle width direction. And the one end part (front part) of the front-back direction of the anchor patch 61 is joined to the 2nd vertical wall 15 of the rear pillar inner 11 in the front-back direction via the flange part 63a.
Further, the other end portion (rear portion) of the anchor patch 61 in the front-rear direction is joined to the vehicle interior side lateral wall 12 of the rear pillar inner 11 via the flange portion 63a in the vehicle width direction.
Thus, the anchor patch 61 forms a closed cross section so as to surround the inside of the bulging portion 18 with the rear pillar inner 11.
In FIG. 8, reference numeral 13 a is a hole formed in the first vertical wall 13 so as to face the joint 20 d between the flange 63 a of the anchor patch 61 and the second vertical wall 15 of the rear pillar inner 11.
As shown by hidden lines (dotted lines) in FIG. 7, the holes 13 a in the present embodiment are formed so as to be aligned in the vertical direction of the first vertical wall 13 of the rear pillar inner 11. In the present embodiment, the two holes 13a are formed, but the number of the holes 13a may be one or three or more.

Next, the effect which the vehicle body rear part structure C shows is demonstrated.
In the vehicle body rear structure C of the present embodiment, a contact portion 20 b between the bulging portion 18 of the rear pillar inner 11 and the inner surface of the rear pillar outer 31 is formed across the vertical direction of the rear pillar 10.
According to such a vehicle body rear structure C, the rigidity of the rear pillar outer 31 that forms the design surface of the automobile can be increased by the contact portion 20b extending in the vertical direction.
Moreover, according to this vehicle body rear part structure C, since the bulging part 18 is continuously formed in the up-down direction, the rigidity by a cross-sectional shape can be obtained.
Further, unlike the conventional vehicle body rear structure, the vehicle body rear structure C does not require a separate member to be disposed on the rear pillar outer 31 in order to increase rigidity. Therefore, according to the present invention, unlike the conventional rear structure of the vehicle body, the design surface of the rear pillar can be formed with good appearance without the attachment mark of a separate member resonating on the design surface.
Further, according to the vehicle body rear structure C, the number of parts, the manufacturing cost, the number of manufacturing steps, and the like can be reduced, and the weight of the automobile can be reduced.

Further, in the vehicle body rear structure C of the present embodiment, the contact portions 20b are formed in the vicinity of the rear pillar inners 11 that are divided vertically, that is, in the vicinity of the rear pillar inner lower 11a, the rear pillar inner middle 11b, and the overlapping portion 20c. .
According to such a vehicle body rear part structure C, the strength of the contact part 20b can be increased.

Further, in the vehicle body rear structure C of the present embodiment, a bead 23 is formed in the vicinity of the joint portion 20a between the rear pillar inner 11 and the rear panel inner 21.
According to such a vehicle body rear structure C, the rigidity of the rear pillar inner 11 can be increased.

Further, in the vehicle body rear structure C of the present embodiment, the rear pillar inner 11 has an extending portion 17 that extends toward the rear panel inner 21 and is connected to the rear panel inner 21.
According to such a vehicle body rear structure C, the rigidity of the entire rear pillar inner 11 can be increased.

Further, in the vehicle body rear structure C of the present embodiment, the beads 23 and the extending portions 17 are arranged separately from each other in the vertical direction of the rear pillar 10.
According to such a vehicle body rear structure C, it is possible to ensure rigidity at each of the upper and lower end portions of the rear pillar inner 11 and to increase the rigidity of the entire rear pillar inner 11.

Further, in the vehicle body rear structure C of the present embodiment, the reinforcing member 51 is disposed along the corner portion 18a.
According to such a vehicle body rear part structure C, the rigidity of the bulging part 18 can be increased, and as a result, the rigidity of the rear pillar outer 31 that forms the design surface can be further increased.

Further, in the vehicle body rear structure C of the present embodiment, the reinforcing member 51 and the contact portion 20b are formed continuously in the vertical direction of the rear pillar 10.
According to such a vehicle body rear structure C, the rigidity can be increased in the vertical direction of the rear pillar inner 11.

Further, in the vehicle body rear structure C of the present embodiment, the anchor patch 61 is joined to the rear pillar inner 11 so as to straddle the bulging portion 18 in the vehicle front-rear direction to form a closed cross section with the rear pillar inner 11. . One end of the anchor patch 61 in the longitudinal direction of the vehicle body is joined to the rear pillar inner 11 in the longitudinal direction.
According to such a vehicle body rear structure C, the anchor patch 61 can form a closed cross section in the rear pillar 10, and the strength of the bulging portion 18 can be increased. Further, since the anchor patch 61 is joined to the rear pillar inner 11 in the vehicle width direction and the front-rear direction different from each other, the attachment strength of the anchor patch 61 to the rear pillar inner 11 is further increased.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It can implement with a various form.
In the embodiment, the bead 23 is formed on the rear panel inner 21, but the bead 23 in the present invention may be formed on the rear pillar inner 11. Further, the bead 23 may be formed on both the rear pillar inner 11 and the rear panel inner 21.

  The bead 23 can also be provided at the upper end of the rear pillar inner 11 and / or the rear panel inner 21. And the extension part 17 can also be provided in the lower end part of the rear pillar inner 11 and / or the rear panel inner 21.

  Moreover, in the said embodiment, although the joining of the anchor patch 61 with respect to the rear pillar inner 11 in the front-back direction is performed via the 2nd vertical wall 15, it is set as the structure performed via the 1st vertical wall 13. it can. At this time, the hole 13 a is provided in the second vertical wall 15.

10 Rear Pillar 11 Rear Pillar Inner 11a Rear Pillar Inner Lower 11b Rear Pillar Inner Middle 11c Rear Pillar Inner Upper 12 Vehicle Side Side Wall 13 First Vertical Wall 13a Hole 14 Outer Side Wall 15 Second Vertical Wall 17 Extending Portion 18a Corner 20a Joint portion 20b Contact portion 20c Superposition portion 21 Rear panel inner 23 Bead 31 Rear pillar outer 41 Rear girder 51 Reinforcement member 61 Anchor patch 64 Anchor patch extension portion C Car body rear structure

Claims (8)

A rear pillar is provided at the rear of the body,
The rear pillar has a rear pillar outer that is disposed on the outer side in the vehicle width direction and forms an outer surface of the rear pillar, and a rear pillar inner that is disposed on the inner side in the vehicle width direction of the rear pillar outer,
The rear pillar inner has a bulging portion that bulges toward the rear pillar outer side,
The bulging portion is formed continuously in the vertical direction of the rear pillar, and has a contact portion that contacts the inner surface of the rear pillar outer in the vertical direction of the rear pillar. Car body rear structure. The rear pillar inner is formed by dividing in the vertical direction of the rear pillar,
The vehicle body rear structure according to claim 1, wherein the abutting portion is formed in the vicinity of a superposed portion between the rear pillar inner members divided vertically. A rear panel inner disposed on the inner side in the vehicle width direction of the rear pillar outer and connected to one end in the front-rear direction of the rear pillar inner;
3. The vehicle body according to claim 1, wherein a bead is formed in at least one of the rear pillar inner and the rear panel inner adjacent to a connection portion between the rear pillar inner and the rear panel inner. Rear structure. A rear panel inner disposed on the inner side in the vehicle width direction of the rear pillar outer and connected to one end in the front-rear direction of the rear pillar inner;
The said rear pillar inner has the extension part extended toward the said rear panel inner side, and connected to the said rear panel inner, The one of Claims 1-3 characterized by the above-mentioned. Car body rear structure. A bead is formed in at least one of the rear pillar inner and the rear panel inner in the vicinity of a connection portion between the rear pillar inner and the rear panel inner.
The vehicle body rear structure according to claim 4, wherein the bead and the extending portion are arranged separately from each other in a vertical direction of the rear pillar. The bulging portion has a corner portion on the inner side in the vehicle width direction,
The vehicle body rear part structure according to any one of claims 1 to 5, wherein a reinforcing member is disposed along the corner portion along the corner portion.   The vehicle body rear part structure according to claim 6, wherein the reinforcing member and the contact portion are formed continuously in a vertical direction of the rear pillar. An anchor patch of a seat belt disposed on the inner side in the vehicle width direction of the rear pillar inner,
The anchor patch is joined to the rear pillar inner so as to straddle the bulging portion in the longitudinal direction of the vehicle body to form a closed cross section with the rear pillar inner,
9. One end of the anchor patch in the longitudinal direction of the vehicle body is joined to the rear pillar inner in the longitudinal direction, and the other end is joined in the vehicle width direction. The vehicle body rear structure according to item 1.

Images