JPWO2020174989A1 - Body side structure - Google Patents

Abstract

The rear wheel house (11) includes a rear wheel house inner (11I) and a rear wheel house outer (11O). The wheel house reinforcing member (14) is joined to the outer surface of the outer base wall and the reinforcing member main body portion (14h) forming a reinforcing closed cross section (22) with the outer base wall (11O-b) of the rear wheel house outer. It has an outer joint that extends outward in the radial direction of the rear wheel. The outer base wall (11O-b) is offset from the inner base wall (11I-b) on the axial side of the rear wheels. The inner joint is arranged on the back surface of the joint surface of the outer upright wall (11O-a) with the inner upright wall (11I-a), and the outer upright wall (11O-a) and the inner upright wall (11I-a). ) And are joined in a three-ply state.

Description

The present invention relates to a vehicle body side structure including a rear wheel house that covers the outside of the rear wheels.
The present application claims priority based on Japanese Patent Application No. 2019-035552 filed on February 28, 2019, the contents of which are incorporated herein by reference.

A rear wheel house that covers the outside of the rear wheels is provided on the rear side of the vehicle. In the rear wheel house, the rear wheel house inner, which is a panel material arranged inside in the vehicle width direction, and the rear wheel house outer, which is a panel material arranged outside in the vehicle width direction, are usually joined to each other by welding or the like. It is composed of. In addition, a side outer panel forming the design surface of the vehicle body is joined to the outside of the rear wheel house.

In recent years, in this type of vehicle body side structure, it has been desired to improve the rigidity around the rear wheel house in order to further improve the steering stability and more advantageously receive the impact load from the vehicle body side. As a countermeasure against this, a wheel house reinforcing member is joined to the upper surface side of the rear wheel house so that a reinforcing closed cross section is formed between the wheel house reinforcing member and the rear wheel house (for example, a method has been devised. See Patent Document 1).

The rear wheel house of Patent Document 1 is formed by joining a substantially arc-shaped rear wheel house inner and a rear wheel house outer to each other, and a wheel house reinforcing member is joined to the upper surface side of the rear wheel house outer. The reinforced closed cross section is surrounded by the wheel house reinforcing member and the rear wheel house outer.

Specifically, the rear wheel house inner and the rear wheel house outer are a base wall that covers the outside of the outer peripheral surface of the rear wheel and an upright wall (flange portion) that extends from the end of the base wall toward the radial outside of the rear wheel. ) And, and the standing walls are butted against each other and joined by spot welding or the like. Further, the wheel house reinforcing member is a reinforcing member main body portion that forms a reinforcing closed cross section with the rear wheel house outer, and an outer flange portion that is joined to the outer surface of the base wall at the outer end of the reinforcing member main body portion in the vehicle width direction. It also has an inner flange portion that is joined to the upright wall of the rear wheel house inner at the inner end of the reinforcing member main body portion in the vehicle width direction. The inner flange portion is welded and fixed to the door opening side of the upright wall of the rear wheel house inner with respect to the joint portion with the rear wheel house outer. As a result, a large area of the reinforced closed cross section is secured.

Japanese Patent Application Laid-Open No. 2006-31358

However, in the vehicle body side structure described in Patent Document 1, the inner flange portion of the wheel house reinforcing member is welded to the door opening side of the upright wall of the rear wheel house inner with respect to the joint portion with the rear wheel house outer. Since it is fixed, the outside of the joint between the rear wheel house inner and the rear wheel house outer is covered in a bag shape by the wheel house reinforcing member. Therefore, the wheel house reinforcing member can join the inner flange portion to the upright wall of the rear wheel house inner only after the welding (spot welding) of the rear wheel house outer and the rear wheel house inner is completed. Therefore, in the case of the vehicle body side structure described in Patent Document 1, the three members of the wheel house reinforcing member, the rear wheel house outer, and the rear wheel house inner cannot be efficiently joined, and the efficiency of the joining work can be improved. It is desired.

Aspects of the present invention provide a vehicle body side structure capable of efficiently joining three members, a wheel house reinforcing member, a rear wheel house outer, and a rear wheel house inner.

The vehicle body side structure according to the present invention adopts the following configuration.
(1) The vehicle body side structure according to the present invention is arranged between a rear wheel house that covers the outside of the rear wheels and the rear wheel house that is arranged outside the rear wheel house and along the peripheral edge of the door opening. A side outer panel forming a closed cross section extending substantially along the outer peripheral surface shape of the rear wheel, and a wheel house reinforcing member forming a reinforcing closed cross section with the rear wheel house inside the closed cross section are provided. The rear wheel house includes a rear wheel house inner which is a panel material arranged inside in the vehicle width direction and a rear wheel house outer which is a panel material arranged outside in the vehicle width direction. An inner base wall in which the wheel house inner faces the outer peripheral surface of the rear wheel, and an inner standing wall extending from the outer end of the inner base wall in the vehicle width direction toward the radial outer side (door opening side) of the rear wheel. The rear wheel house outer has an outer base wall facing the outer peripheral surface of the rear wheel, and an outer standing wall extending from the inner end of the outer base wall in the vehicle width direction toward the radial outer side of the rear wheel. The inner standing wall and the outer standing wall are joined to each other, and the outer base wall is arranged so as to be offset from the inner base wall to the axial side of the rear wheel, and the wheel. The house reinforcing member includes a reinforcing member main body portion that forms the reinforcing closed cross section with the outer base wall, and an outer joint portion that is joined to the outer surface of the outer base wall at the outer portion of the reinforcing member main body portion in the vehicle width direction. The inner joint portion extends from the inner end in the vehicle width direction of the reinforcing member main body portion toward the outer side in the radial direction of the rear wheel, and the inner joint portion is with the inner standing wall of the outer standing wall. It is arranged on the back surface of the joint surface and is joined to the outer upright wall and the inner upright wall in a three-layered state.

According to the configuration of the above aspect (1), in the wheel house reinforcing member, the outer joint portion is joined to the outer surface of the outer base wall of the rear wheel house outer, and the inner joint portion is the outer standing wall and the rear wheel of the rear wheel house outer. It is joined to the inner standing wall of the house inner in a three-layered state. At this time, the inner joint portion of the wheel house reinforcing member can be easily joined to the outer standing wall and the inner standing wall by spot welding in a state of three layers.
Further, when the wheel house reinforcing member and the side outer panel are connected to the rear wheel house, the rear wheel house and the side outer panel form a closed cross section extending substantially along the outer peripheral surface shape of the rear wheel (along the peripheral edge of the door opening). At the same time, a reinforced closed cross section is formed by the rear wheel house outer and the wheel house reinforcing member inside the closed cross section. Moreover, by arranging the outer base wall offset from the inner base wall to the axial side of the rear wheel, the area of the reinforced closed cross section can be increased. As a result, the rigidity and strength around the rear wheel house can be efficiently increased without relying on the thickness of the steel plate.

(2) In the aspect of (1) above, in the rear wheel house outer, the outer base wall is formed substantially parallel to the outer peripheral surface of the rear wheel in a cross section along the vehicle width direction, and the vehicle width of the outer base wall is formed. An inclined wall that inclines toward the axial center side of the rear wheel toward the outer side in the vehicle width direction is provided at the edge portion on the outer side in the direction, and the side outer panel is provided with an inclined joint wall that is joined to the inclined wall. You may be able to do it.

In this case, since the outer base wall of the rear wheel house outer is formed substantially parallel to the outer peripheral surface of the rear wheels, the outer base wall can be sufficiently brought close to the rear wheels without causing interference with the rear wheels. .. Therefore, it is possible to secure a sufficiently large cross-sectional area of the reinforced closed cross section in the limited space of the peripheral region of the rear wheel.
If the outer base wall that is curved in the front and rear of the vehicle is placed so that the outer base wall is offset toward the axis of the rear wheel from the inner base wall, the degree of curvature becomes larger (curvature is smaller), and the outer base wall becomes outward in the vehicle width direction. It becomes difficult to press-mold the bending angle of the edge portion at a substantially right angle. However, in this configuration, an inclined wall is provided on the outer edge of the outer base wall in the vehicle width direction, and the inclined joint wall of the side outer panel is joined to the inclined wall. Therefore, when this configuration is adopted, it is not necessary to sharply bend the outer edge of the outer base wall in the vehicle width direction at a substantially right angle, and the rear wheel house outer can be easily processed.

(3) In the aspect of (2) above, the edge of the inclined joint wall of the side outer panel is on the side of the axis so that the inner surface and the outer surface are planes substantially orthogonal to the axis of the rear wheel. A bending flange portion that bends to the surface may be provided.

In this case, since it is not necessary to accurately cut the end portion of the inclined joint wall of the side outer panel, the processing of the side outer panel becomes easy. Further, by bending the end portion of the inclined joint wall to form the bent flange portion, the dimensional accuracy of the end portion of the inclined joint wall can be easily improved. Further, since the bent flange portion is bent toward the axial center of the rear wheel, the dust sealer can be easily applied to the mating portion between the end portion of the inclined joint wall and the end portion of the inclined wall on the back surface side of the bent flange portion. can do. Specifically, when applying the dust sealer, the bent flange portion can be used as a guide for applying the dust sealer, and the protrusion of the dust sealer from the end portion of the inclined wall can be hidden by the bent flange portion.

(4) In the embodiment (2) or (3) above, the side outer panel may be provided with a garnish that covers the lateral side of the inclined joint wall in the vehicle width direction.

In this case, the joint marks and the like on the inclined joint wall are covered with the garnish. Therefore, the appearance from the outside is improved, and it is possible to prevent the clothes of the occupant from swinging to the free end of the bent flange portion.

(5) In any one aspect of (2) to (4) above, a side sill reinforcing member at the rear of the side sill is arranged at the front portion of the rear wheel house, and the trailing edge portion of the side sill reinforcing member is the above-mentioned. It is bolted to the leading edge of the wheel house reinforcing member, and is joined to the inclined wall and the inclined joint wall while being sandwiched between the inclined wall and the inclined joint wall on the outside in the vehicle width direction. You may.

In this case, the front portion of the rear wheel house is firmly connected to the rear portion of the side sill reinforcing member at a plurality of locations on the outer side in the vehicle width direction. Further, since the closed cross section reinforced by the wheel house reinforcing member can be continuously connected to the closed cross section of the side sill with high rigidity, the rigidity from around the rear wheel house to the side sill can be efficiently increased.

In the embodiment of the present invention, the inner joint portion of the wheel house reinforcing member is joined to the outer standing wall of the rear wheel house outer and the inner standing wall of the rear wheel house inner in a three-layered state. The three members of the rear wheel house outer and the rear wheel house inner can be efficiently joined by spot welding. Therefore, when the vehicle body side structure of the present invention is adopted, the work efficiency at the time of manufacturing can be improved.

It is an exploded perspective view of the vehicle of an embodiment. It is a side view of the vehicle of the embodiment near the rear. It is a perspective view of the part corresponding to the part III of FIG. 1 of the vehicle of an embodiment. It is a perspective view of the vehicle of the embodiment in a state where the side outer panel of the part corresponding to the part III of FIG. 1 is attached. FIG. 5 is a cross-sectional view corresponding to the VV cross section of FIG. 3 of the vehicle of the embodiment. FIG. 5 is a cross-sectional view corresponding to the VI-VI cross section of FIG. 3 of the vehicle of the embodiment. It is a partial cross-sectional perspective view which made the part corresponding to the VII-VII cross section of FIG. 2 of the vehicle of embodiment a cross section.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, front / rear, up / down, and left / right shall mean front / rear, up / down, and left / right of the vehicle unless otherwise specified. Further, at appropriate points in the drawing, an arrow UP pointing to the upper side of the vehicle, an arrow FR pointing to the front of the vehicle, and an arrow LH pointing to the left side of the vehicle are written.

FIG. 1 is an exploded perspective view of the vehicle body 1 of the vehicle of the present embodiment as viewed from above the left front portion, and FIG. 2 is a left side view of the vehicle body 1 near the rear portion. The vehicle body 1 of the present embodiment is formed substantially symmetrically on the left and right sides. Hereinafter, the vehicle body side structure will be described with reference to the drawings showing the left side surface of the vehicle body 1.
As shown in FIGS. 1 and 2, the vehicle body 1 includes a side sill 10, a rear wheel house 11, a quarter pillar 12, a roof side rail 13, a wheel house reinforcing member 14, and a side outer panel 15. There is.

The side sill 10 is arranged at the lower end position of the side portion on the outside of the vehicle interior, and extends substantially along the front-rear direction of the vehicle body. The rear wheel house 11 is arranged on the rear side of the side sill 10 so as to cover the upper outside of the rear wheel Wr. The quarter pillar 12 extends from the vicinity of the top of the rear wheel house 11 toward the roof side rail 13 so as to be inclined upward toward the front portion, and the upper end portion thereof is connected to the roof side rail 13. The roof side rail 13 extends substantially along the front-rear direction of the vehicle body on the side portion of the roof portion of the vehicle body. The wheel house reinforcing member 14 is joined to the lower end of the quarter pillar 12 and the upper surface side of the rear wheel house 11 near the front portion, and faces the rear portion of the side sill 10 along the peripheral edge of the rear side door opening 18 (door opening). It is extended.

The side outer panel 15 is a panel material that forms a design surface on the side of the vehicle. The side outer panel 15 has a side sill outer portion 15a that forms a part of the vehicle outer side of the side sill 10 and a wheel house portion 15b that covers the outer side of the rear wheel house 11.

The side sill 10 has a closed cross section extending in the front-rear direction of the vehicle body formed between the side sill stiffeners 10s by connecting the side sill stiffeners 10s to the outside of the side sill inners (not shown). Further, a side sill outer portion 15a of the side outer panel 15 is coupled to the outside of the side sill stiffener 10s. A closed cross section is also formed between the side sill stiffener 10s and the side sill outer portion 15a. Further, a side sill reinforcing member 50 is integrally connected to the rear end portion of the side sill inner and the side sill stiffener 10s, and the side sill reinforcing member 50 is connected to the front region of the rear wheel house 11.

Further, a substantially central portion of the side sill 10 and the roof side rail 13 in the front-rear direction of the vehicle body is connected by a center pillar 16. A front door opening 17 opened and closed by a front door (not shown) is provided on the front side of the center pillar 16, and a rear door opening 18 opened and closed by a rear door (not shown) is provided on the rear side of the center pillar 16. Has been done. The rear door opening 18 is surrounded by a center pillar 16, a side sill 10, a front region of the rear wheel house 11, a quarter pillar 12, and a roof side rail 13. The corner portion C at the lower end of the rear portion of the rear door opening 18 is formed in a substantially V-shape in side view by the connecting portion between the front region of the rear wheel house 11 and the rear region of the side sill 10. In this region where the side view is substantially V-shaped, the cross-sectional area must be reduced in order not to sacrifice the ease of getting on and off the occupants. Therefore, the front region of the rear wheel house 11 has a cross-sectional structure in which high rigidity can be obtained in a limited space. The detailed cross-sectional structure of this portion will be described in detail later.

FIG. 3 is a perspective view of a portion corresponding to the portion III of FIG. 1, and FIG. 4 is a perspective view of a portion corresponding to the portion III of FIG. 1 with the side outer panel 15 attached. Further, FIG. 5 is a cross-sectional view corresponding to the VV cross section of FIG. 3, and FIG. 6 is a cross-sectional view corresponding to the VI-VI cross section of FIG. Note that FIGS. 5 and 6 show a state in which the side outer panel 15 is attached to the rear wheel house 11.
As shown in FIGS. 5 and 6, the rear wheel house 11 includes a rear wheel house inner 11I which is a panel material arranged inside in the vehicle width direction and a rear wheel house 11 which is a panel material arranged outside in the vehicle width direction. It is equipped with an outer 11O. The rear wheel house inner 11I has an inner base wall 11I-b facing the outer peripheral surface of the rear wheel Wr and an inner standing extending from the outer end of the inner base wall 11I-b in the vehicle width direction toward the radial outer side of the rear wheel Wr. It has a wall 11I-a. The rear wheel house outer 11O has an outer base wall 11O-b facing the outer peripheral surface of the rear wheel Wr and an outer standing wall 11O extending from the inner end of the outer base wall 11O-b in the vehicle width direction toward the radial outer side of the rear wheel Wr. -A and. The outer base wall 11O-b is offset from the inner base wall 11I-b to the axial center o side of the rear wheel Wr, and the rear wheel house inner 11I and the rear wheel house outer 11O are arranged with the inner standing wall 11I-a. The outer upright walls 11O-a are overlapped with each other, and the inner upright wall 11I-a and the outer upright wall 11O-a are joined to each other by spot welding.

In the rear wheel house inner 11I, the inner base wall 11I-b gently inclines downward in the vehicle width direction and bends downward to the extending end of the inner base wall 11I-b to extend the inner covering wall 11I-c. Has been extended. The inner covering wall 11I-c covers the inside of the rear wheel Wr in the vehicle width direction, and prevents mud splashing from the rear wheel Wr toward the inside of the vehicle body.

On the other hand, the outer base wall 11O-b of the rear wheel house outer 11O is located closer to the outer peripheral surface of the rear wheel Wr than the inner base wall 11I-b of the rear wheel house inner 11I, and is on the axial o side of the rear wheel Wr. It is arranged offset. That is, the outer standing wall 11O-a of the rear wheel house outer 11O extends downward from the overlapping portion (joint portion) of the rear wheel house inner 11I with the inner standing wall 11I-a, and the outer base wall 11O-b is formed. It extends from the lower end of the outer upright wall 11O-a by bending outward at a substantially right angle in the vehicle width direction. As shown in FIGS. 5 and 6, the outer base wall 11O-b is formed substantially parallel to the outer peripheral surface of the rear wheel Wr in the cross section along the vehicle width direction.

The outer standing wall 11O-a of the rear wheel house outer 11O is straight upward after the upper end side region of the overlapping portion (joint portion) with the inner standing wall 11I-a is bent outward in the vehicle width direction in a crank shape. It is extending. Hereinafter, the portion extending straight is referred to as an upper end flange portion 11O-af1, and the overlapping portion with the inner standing wall 11I-a is referred to as an intermediate flange portion 11O-af2.

Further, on the outer edge of the outer base wall 11O-b on the outer side in the vehicle width direction, an inclined wall 11O-c inclined toward the outer side in the vehicle width direction toward the axis o side of the rear wheel Wr is continuously provided. The inclined wall 11O-c is arranged at a position outside the rear wheel Wr at the outer end in the vehicle width direction. The outer base wall 11O-b and the inclined wall 11O-c are located outside the rear wheel Wr with the minimum required clearance CL around the rear wheel Wr.

Of the wheel house portion 15b of the side outer panel 15, the front region 15b-1 facing the rear door opening 18 is above the outer base wall 11O-b of the rear wheel house outer 11O, as shown in FIGS. 5 and 6. It is provided with an upper wall 20u that covers the outer base wall 20u and a side wall 20s that covers the outer side of the outer base wall 11O-b in the vehicle width direction. At the inner end of the upper wall 20u of the front region 15b-1 in the vehicle width direction, an upright wall 20p that bends upward and extends and is joined to the upper end flange portion 11O-af1 of the rear wheel house outer 11O is continuously provided. Has been done. The upper wall 20u and the upright wall 20p of the front region 15b-1 form the peripheral edge of the corner portion C at the lower end of the rear portion of the rear door opening 18. At the lower end of the side wall 20s of the front region 15b-1, an inclined joint wall 20q that inclines toward the outer side in the vehicle width direction toward the axis o side of the rear wheel Wr extends.

The inclined joint wall 20q is overlapped with the inclined wall 11O-c of the rear wheel house outer 11O, and is joined to the inclined wall 11O-c by spot welding. Further, at the outer edge of the inclined joint wall 20q in the vehicle width direction, a bending flange that bends toward the axis o so that the inner surface and the outer surface form a plane substantially orthogonal to the axis o of the rear wheel Wr. A portion 20r is provided.
By joining the wheel house portion 15b of the side outer panel 15 to the rear wheel house outer 11O, the outer peripheral surface shape of the rear wheel Wr (the corner portion of the rear lower end of the rear side door opening 18) is formed between the side outer panel 15 and the rear wheel house outer 11O. A closed cross section 21 extending substantially along C) is formed. A dust sealer s is applied between the terminal portion of the inclined wall 11O-c of the rear wheel house outer 11O and the terminal portion of the inclined joint wall 20q to prevent dust from entering the closed cross section 21 inward. ..

The wheel house reinforcing member 14 forms a reinforcing closed cross section 22 between the rear wheel house outer 11O and the rear wheel house outer 11O inside the closed cross section 21 between the front region 15b-1 of the wheel house portion 15b and the rear wheel house outer 11O. ing. The reinforced closed cross section 22 extends substantially along the arc shape of the front region of the rear wheel house 11.

The wheel house reinforcing member 14 has an upper wall 14u, a reinforcing member main body 14h having a side wall 14s bent downward from the outer end portion of the upper wall 14u in the vehicle width direction, and a lower end of the side wall 14s of the reinforcing member main body 14h. The outer flange portion 14o extending outward in the vehicle width direction and the inner flange portion 14i extending radially outward (almost upward) of the rear wheel Wr from the inner end portion in the vehicle width direction of the upper wall 14u of the reinforcing member main body portion 14h. And have. The outer flange portion 14o constitutes an outer joint portion to be joined to the upper surface of the outer base wall 11O-b of the rear wheel house outer 11O, and the inner flange portion 14i is a vehicle of the outer standing wall 11O-a of the rear wheel house outer 11O. It constitutes an inner joint that is joined to the outer surface in the width direction. The reinforcing member main body portion 14h forms a substantially rectangular reinforcing closed cross section 22 with the rear wheel house outer 11O. Further, the inner flange portion 14i is the back surface side (outside in the vehicle width direction) of the joint surface of the rear wheel house inner 11I with the inner standing wall 11I-a of the intermediate flange portion 11O-af2 of the outer standing wall 11O-a. It is piled up on. The inner flange portion 14i (inner joint portion) is joined to the intermediate flange portion 11O-af2 of the outer upright wall 11O-a and the inner upright wall 11I-a by spot welding in a three-layered state.

Further, the side sill reinforcing member 50 integrally connected to the rear end portion of the side sill 10 bends and extends toward the rear upper side so as to overlap the upper surface side of the front region of the rear wheel house 11. As shown in FIG. 6, the side sill reinforcing member 50 includes an upper wall 50u that is overlapped with the upper wall 14u of the wheel house reinforcing member 14, and a side wall 50s that bends downward and extends from the inner end portion of the upper wall 50u in the vehicle width direction. And the inclined flange portion 50q that inclines toward the axial center o side of the rear wheel Wr from the end of the side wall 50s toward the outside in the vehicle width direction, and the radial direction of the rear wheel Wr from the inner end of the upper wall 50u in the vehicle width direction. It has an upright flange portion 50p extending outward.

The inclined flange portion 50q of the side sill reinforcing member 50 is sandwiched between the inclined wall 11O-c of the rear wheel house outer 11O and the inclined joint wall 20q of the side outer panel 15, and is sandwiched between the inclined wall 11O-c and the inclined joint wall 20q. Is joined by spot welding. The upright flange portion 50p of the side sill reinforcing member 50 is sandwiched between the upright wall 20p of the side outer panel 15 and the upper end flange portion 11O-af1 of the rear wheel house outer 11O, and is sandwiched between the upright wall 20p and the upper end flange portion 11O-af1. Is joined by spot welding.

Further, a bolt insertion hole 51 is formed at substantially the center of the upper wall 50u of the side sill reinforcing member 50 in the vehicle width direction, and a weld nut 52 is provided above the bolt insertion hole 51. A similar bolt insertion hole 53 is formed in the upper wall 14u of the wheel house reinforcing member 14 at a position corresponding to the bolt insertion hole 51 of the side sill reinforcing member 50. A collar 24 through which the shaft portion of the fastening bolt 23 is inserted is interposed between the upper wall 14u of the wheel house reinforcing member 14 and the outer base wall 11O-b of the rear wheel house outer 11O.
The shaft portion of the fastening bolt 23 passes through the collar 24 and the bolt insertion holes 53 and 51 from the lower side of the outer base wall 11O-b through the bolt insertion hole 56 and is fastened to the weld nut 52.
As a result, the side sill reinforcing member 50 is integrally connected to the wheel house reinforcing member 14 and the rear wheel house outer 11O via the fastening bolt 23. As a result, the reinforcing closed cross section 22 by the wheel house reinforcing member 14 and the rear wheel house outer 11O is continuous with the closed cross section of the side sill 10.

FIG. 7 is a partial cross-sectional perspective view of the wheel house portion 15b of the side outer panel 15 having a portion corresponding to the VII-VII cross section of FIG. 2 as a cross section.
As shown in FIG. 4, an inclined joint wall 20q and a bent flange portion 20r are arranged on the outer edge portion of the front region 15b-1 of the wheel house portion 15b in the vehicle width direction. Then, when the inclined joint wall 20q is spot-welded to the inclined wall 11O-c of the rear wheel house outer 11O, welding marks (joint marks) are formed on the surface thereof. Therefore, as shown in FIGS. A garnish 60 is attached to cover the.

As described above, in the vehicle body side structure of the present embodiment, the rear wheel house 11 and the side outer panel 15 form a closed cross section 21 extending substantially along the outer peripheral surface shape of the rear wheel Wr at the peripheral edge of the door opening. A reinforcing closed cross section 22 formed by the rear wheel house outer 11O and the wheel house reinforcing member 14 is formed inside the closed cross section 21. Therefore, when the vehicle body side structure of the present embodiment is adopted, the rigidity and strength around the rear wheel house can be efficiently increased.

Further, in the vehicle body side structure of the present embodiment, the inner flange portion 14i of the wheel house reinforcing member 14 is the inner standing wall 11I of the rear wheel house inner 11I among the outer standing walls 11O-a of the rear wheel house outer 11O. It is overlapped on the back surface of the joint surface with −a, and is joined to the outer upright wall 11O—a and the inner upright wall 11I—a in a three-layered state. Therefore, the three members of the wheel house reinforcing member 14, the rear wheel house outer 11O, and the rear wheel house inner 11I can be efficiently joined by spot welding. Therefore, when the vehicle body side structure of the present embodiment is adopted, the work efficiency at the time of manufacturing can be improved.

Further, in the vehicle body side structure of the present embodiment, since the outer base wall 11O-b is arranged offset from the inner base wall 11I-b to the axial center o side of the rear wheel Wr, the outer base wall 11O-b is arranged. It can be sufficiently close to the rear wheel Wr. Therefore, in the limited space of the peripheral region of the rear wheel Wr, the cross-sectional area of the reinforced closed cross section 22 can be secured sufficiently large, and the rigidity around the rear wheel can be efficiently increased.

Further, in the vehicle body side structure of the present embodiment, the outer base wall 11O-b of the rear wheel house outer 11O is formed so as to be substantially parallel to the outer peripheral surface of the rear wheel Wr in the cross section along the vehicle width direction, and the outer base wall is formed. An inclined wall 11O-c is provided on the outer edge of the 11O-b in the vehicle width direction. The wheel house portion 15b of the side outer panel 15 is provided with an inclined joint wall 20q to be joined to the inclined wall 11O-c. In the case of this structure, since the outer base wall 11O-b is formed substantially parallel to the outer peripheral surface of the rear wheel Wr, the outer base wall 11O-b is sufficiently provided to the rear wheel Wr without causing interference with the rear wheel Wr. You can get closer. Therefore, in the limited space of the peripheral region of the rear wheel Wr, the cross-sectional area of the reinforced closed cross section 22 can be secured sufficiently large, and the rigidity around the rear wheel house can be efficiently increased. Therefore, in the case of the present embodiment, since the rear door opening 18 is not narrowed, the occupant's ease of getting on and off is not sacrificed.

Further, when the outer base wall 11O-b curved in the front-rear direction of the vehicle is arranged so that the outer base wall 11O-b is offset from the inner base wall 11I-b toward the axis o side of the rear wheel Wr, the degree of curvature becomes large. It becomes difficult to press-mold the outer base wall 11O-b at a bending angle on the outer side in the vehicle width direction at a substantially right angle. However, in this configuration, the inclined wall 11O-c is provided on the outer edge of the outer base wall 11O-b in the vehicle width direction, and the inclined joint wall 20q of the side outer panel 15 is joined to the inclined wall 11O-c. Therefore, when this configuration is adopted, it is not necessary to sharply bend the outer edge of the outer base wall 11O-b in the vehicle width direction at a substantially right angle, which makes it easier to process the rear wheel house outer 11O. can do.

Further, in the vehicle body side structure of the present embodiment, since the bent flange portion 20r is provided at the end edge of the inclined joint wall 20q of the side outer panel 15, the end portion of the inclined joint wall 20q of the side outer panel 15 is provided at the time of manufacturing. There is no need to cut accurately. Therefore, the processing of the side outer panel 15 becomes easier. In the structure of the present embodiment, since the end portion of the inclined joint wall 20q can be bent to form the bent flange portion 20r, the dimensional accuracy of the end portion of the inclined joint wall 20q can be easily improved.

Further, in the vehicle body side structure of the present embodiment, since the bending flange portion 20r is bent toward the axis o of the rear wheel Wr, the back surface side of the bending flange portion 20r is the end portion of the inclined joint wall 20q. The dust sealer s can be easily applied to the mating portion of the end portion of the inclined wall 11O-c. That is, when applying the dust sealer s, the bent flange portion 20r can be used as a guide for applying the dust sealer s, and the protrusion of the dust sealer s from the end portion of the inclined wall 11O-c is caused by the bent flange portion 20r. Can be hidden.

Further, in the vehicle body side structure of the present embodiment, since the garnish 60 covering the outer side of the inclined joint wall 20q in the vehicle width direction is attached to the side outer panel 15, the joint marks and the like on the inclined joint wall 20q are formed by the garnish 60. Can be obscured. Therefore, when the structure of the present embodiment is adopted, the appearance from the outside is improved, and it is possible to prevent the clothes of the occupant from swinging to the free end of the bent flange portion 20r.

Further, in the vehicle body side structure of the present embodiment, the trailing edge portion of the side sill reinforcing member 50 is connected to the front edge portion of the wheel house reinforcing member 14 by the fastening bolt 23, and the inclined flange portion 50q is connected to the inclined wall 11O-. It is joined to the inclined wall 11O-c and the inclined joint wall 20q in a state of being sandwiched between c and the inclined joint wall 20q. Therefore, the front portion of the rear wheel house 11 is firmly connected to the rear portion of the side sill reinforcing member 50 at a plurality of locations. Further, in this structure, the reinforced closed cross section 22 formed by the wheel house reinforcing member 14 can be continuously connected to the closed cross section of the side sill 10 with high rigidity. Therefore, when this configuration is adopted, the rigidity from around the rear wheel house to the side sill 10 can be efficiently increased.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the gist thereof.

10 ... Side sill 11 ... Rear wheel house 11I ... Rear wheel house Inner 11I-a ... Inner standing wall 11I-b ... Inner base wall 11O ... Rear wheel house outer 11O-a ... Outer standing wall 11O-b ... Outer base wall 11O-c ... Inclined wall 14 ... Wheel house reinforcing member 14h ... Reinforcing member main body 14o ... Outer flange (outer joint)
14i ... Inner flange (inner joint)
15 ... Side outer panel 20q ... Inclined joint wall 20r ... Bending flange 21 ... Closed section 22 ... Reinforced closed section 50 ... Side sill reinforcement member 60 ... Garnish o ... Axle Wr ... Rear wheel

Claims (5)

The rear wheel house that covers the outside of the rear wheels and
A side outer panel arranged outside the rear wheel house and forming a closed cross section extending substantially along the outer peripheral surface shape of the rear wheel with the rear wheel house along the peripheral edge of the door opening.
Inside the closed cross section, a wheel house reinforcing member forming a reinforcing closed cross section with the rear wheel house is provided.
The rear wheel house includes a rear wheel house inner which is a panel material arranged inside in the vehicle width direction and a rear wheel house outer which is a panel material arranged outside in the vehicle width direction.
The rear wheel house inner has an inner base wall facing the outer peripheral surface of the rear wheel, and an inner standing wall extending from the outer end of the inner base wall in the vehicle width direction toward the radial outer side of the rear wheel. With
The rear wheel house outer has an outer base wall facing the outer peripheral surface of the rear wheel and an outer upright wall extending from the inner end of the outer base wall in the vehicle width direction toward the radial outer side of the rear wheel.
The inner standing wall and the outer standing wall are joined to each other.
The outer base wall is offset from the inner base wall on the axial side of the rear wheel.
The wheel house reinforcing member is
A reinforcing member main body that forms the reinforcing closed cross section with the outer base wall,
The outer joint portion to be joined to the outer surface of the outer base wall at the outer portion of the reinforcing member main body portion in the vehicle width direction, and the outer joint portion.
It has an inner joint portion extending from the inner end in the vehicle width direction of the reinforcing member main body portion toward the outer side in the radial direction of the rear wheel.
The inner joint portion is arranged on the back surface of the joint surface of the outer upright wall with the inner upright wall, and is joined to the outer upright wall and the inner upright wall in a three-layered state on the vehicle body side. Part structure. In the rear wheel house outer, the outer base wall is formed substantially parallel to the outer peripheral surface of the rear wheel in a cross section along the vehicle width direction, and the vehicle is formed on the outer edge of the outer base wall in the vehicle width direction. An inclined wall is provided that inclines toward the axial side of the rear wheel toward the outer side in the width direction.
The vehicle body side structure according to claim 1, wherein the side outer panel is provided with an inclined joint wall to be joined to the inclined wall. The edge of the inclined joint wall of the side outer panel is provided with a bent flange portion that bends toward the axis so that the inner surface and the outer surface are flat surfaces that are substantially orthogonal to the axis of the rear wheel. The vehicle body side structure according to claim 2. The vehicle body side structure according to claim 2 or 3, wherein a garnish that covers the outside of the inclined joint wall in the vehicle width direction is attached to the side outer panel. A side sill reinforcing member at the rear of the side sill is arranged at the front of the rear wheel house.
The trailing edge portion of the side sill reinforcing member is bolted to the leading edge portion of the wheel house reinforcing member, and is sandwiched between the inclined wall and the inclined joint wall on the outer side in the vehicle width direction. The vehicle body side structure according to any one of claims 2 to 4, which is joined to the inclined joint wall.

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