JP2001063630A - Vehicle body side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower a deformation amount of an upper frame by efficiently transmitting an input from a suspension to the upper frame. SOLUTION: This vehicle body side part structure has a rear suspension mount bracket part 7, a rear wheel house part 13, and a rear pillar part 15 integrally formed. In this case, the rear suspension mount bracket part 7 is formed so as to be thicker than the other part, and the rear pillar part 15 includes a part of the periphery of a door of a rear fender and is composed of outer walls 21 and the like, an inner wall 23, and vertical walls. This structure is also provided with horizontal ribs for connecting the vertical walls with each other in a front-to-back direction of a vehicular body, vertical ribs 41 and the like for connecting the rear suspension mount bracket part 7 with the rear pillar part 15 so as to be laid across up and down, and a connection rib 45 for connecting the vertical ribs 41 and the like with each other in the front-to-back direction of the vehicular body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body side structure such as around a rear wheel house of an automobile.

[0002]

2. Description of the Related Art A conventional structure around a wheel house of a steel monocoque body is, for example, as shown in FIG. The structure around the wheel house is located between a roof structure (not shown) and the rear side member 1, and the wheel house inner 3, wheel house outer 5, suspension mount bracket 7, rear pillar inner 9, and rear fender 11 are each made of steel. It is formed by a panel and joined by spot welding.

According to this structure, the rear pillar portion and the rear fender portion have a closed section and high rigidity. However, since a number of steel panels are used, the weight is heavy and a mold for molding each portion is required. There are limits to improving efficiency.

On the other hand, with the aim of improving fuel efficiency, environmental measures, and running performance, the use of light metals such as aluminum alloys for vehicle bodies to reduce the weight has been studied and put to practical use.
Applicable materials for aluminum alloy include plate materials, extruded materials,
There are castings and combinations thereof. Since the material cost of the casting is lower than that of the plate material, and the number of parts can be reduced by integral molding, the use of the casting for a complicated roof structure of a vehicle has a great advantage.

[0005] An example in which a cast material of an aluminum alloy is used for a roof portion of a vehicle is disclosed in, for example, Japanese Patent Laid-Open No. 6-28665.
In the vehicle body side structure shown in FIG. 2, a wheel house portion is formed integrally with an aluminum alloy casting.

According to the vehicle body side structure, the rear pillar inner, the rear suspension tower upper, the rear wheel house, the rear frame, and the cross member are integrated by casting, and the floor or the like is extended with the integrated member. A monocoque body having a closed cross-section structure is formed with the members opposed to each other, so that the weight can be reduced while preventing the structure from becoming complicated.

[0007] In addition, ribs are provided on the rear and front surfaces of the rear wheel house around the rear suspension tower,
The rigidity around the rear suspension tower is increased, and the load around the rear suspension tower is received by these ribs to distribute the load. Further, a rib is provided at a corner portion above the rear pillar inner, thereby increasing the rigidity of the corner portion.

[0008]

However, in such a conventional structure, the area around the rear suspension tower,
Especially for the portion below the upper corner of the rear pillar inner, the front and rear vertical ribs are formed only on the front and back of the rear pillar inner, so the opening of the rib tends to occur in response to input from the suspension At the upper end of the rib at the upper part of the rear suspension tower, the rear pillar inner is easily deformed locally, so that the rear pillar inner and the rib need to be formed thick, which may increase the weight. In addition, installation of the ribs in the wheel house has a disadvantageous layout in view of interference with the tire.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle body side structure capable of efficiently transmitting an input from a suspension to a shed and suppressing deformation of the shed.

[0010]

According to a first aspect of the present invention, a suspension mount bracket portion, a wheel house portion including a rear wheel house inner and a wheel house outer, and a pillar portion are provided between a roof and a side member. In the integrally formed vehicle body side structure, the suspension mount bracket portion is formed to be thicker than other portions, and the pillar portion includes a part around a door of a fender and forms an outer surface of a vehicle body skeleton. A wall and an inner wall positioned on the inner side in the vehicle width direction with respect to the outer wall, and at least one pair of vertical walls connecting the two walls in the vehicle width direction and facing in the vehicle front and rear direction. The connecting horizontal rib and the suspension mount bracket part and the pillar part are connected so as to extend vertically and face each other in the vehicle longitudinal direction. At least one pair of longitudinal ribs that are characterized by providing a connecting rib connecting the said longitudinal ribs mutually in the longitudinal direction of the vehicle body.

According to a second aspect of the present invention, in the vehicle body side structure according to the first aspect, the vertical rib connects the suspension mount bracket, the wheel house inner, and the pillar so as to extend vertically. It is characterized by.

According to a third aspect of the present invention, in the vehicle body side structure according to the first or second aspect, a circumferential rib extending along a vehicle width direction is provided between a part around the door of the fender and the wheel house. It is characterized by having been provided.

According to a fourth aspect of the present invention, there is provided the vehicle body side structure according to any one of the first to third aspects, wherein the outer wall and the inner wall of the pillar portion are located outside the inner wall in the vehicle width direction. A closed cross-sectional structure is formed between the lateral ribs and a panel on the roof structure side constituting the roof.

According to a fifth aspect of the present invention, in the vehicle body side structure according to any one of the first to fourth aspects, the inner wall and the outer wall are formed to be thicker than the vertical wall. And

According to a sixth aspect of the present invention, there is provided the vehicle body structure according to any one of the first to fifth aspects, wherein a corner between the inner wall and the outer wall and the vertical wall is thicker than other portions. It is characterized by being formed into meat.

According to a seventh aspect of the present invention, there is provided the vehicle body side structure according to any one of the first to sixth aspects, wherein the connecting rib includes an intersection between the suspension mount bracket and the wheel house inner, and a wheel house. It is characterized in that it is provided on at least one side of a bent portion of the inner in the vehicle width direction and an intersection of the wheel house inner and the pillar portion.

According to an eighth aspect of the present invention, in the vehicle body side structure according to any one of the first to seventh aspects, the vertical rib is formed so as to be gradually widened downward in the vehicle width direction, and has an upper end side. It is characterized in that it reaches the lateral rib and the lower end side reaches the suspension bracket.

According to a ninth aspect of the present invention, in the vehicle body side structure according to any one of the first to eighth aspects, the suspension mount bracket portion, the wheel house inner portion, and the pillar portion are integrally formed of a light metal casting. It is characterized by being formed in.

[0019]

According to the first aspect of the present invention, the input from the suspension acts as an out-of-plane load on the suspension mount bracket portion serving as the suspension mounting portion, but the suspension mount bracket portion is formed thicker than other portions. Therefore, the deformation can be suppressed. Further, between the suspension mount bracket section and the pillar section, an angle change due to a moment due to a suspension input can be suppressed by the vertical rib. For the moment entering the pillar portion, the vertical rib or the inner wall of the pillar portion is dispersed to the outer wall via the vertical wall or the horizontal rib of the pillar portion, and it can act as a bending of the entire pillar portion, Local deformation can be suppressed.

The horizontal ribs suppress the opening and closing deformation of the vertical ribs that suppress the angle change from the suspension mount bracket portion to the pillar portion. Since the pillar portion connects the inner wall and the outer wall with the vertical wall or the horizontal rib, it is possible to secure high rigidity as a whole with respect to bending moment with a thin and lightweight structure.

The axial force of the suspension input can be efficiently transmitted to the roof side as the axial force (in-plane force) of the inner wall, the outer wall, and the vertical wall of the pillar portion.

According to the second aspect of the present invention, in addition to the effect of the first aspect, an angle change due to a moment due to a suspension input between the suspension mount bracket and the wheel house inner can be suppressed by the longitudinal rib. . The change in the angle of the upper and lower portions of the wheel house inner can also be suppressed by the vertical ribs. The change in angle between the upper part of the wheel house inner part and the pillar part can also be suppressed by the vertical rib.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the circumferential rib suppresses an angle change between the pillar portion and the upper portion of the wheel house due to a bending moment at the upper portion of the wheel house. Can be.

According to a fourth aspect of the present invention, in addition to the effect of any one of the first to third aspects, the outer wall and the inner wall of the pillar portion, the lateral ribs located outside the inner wall in the vehicle width direction, and the upper part of the vehicle body are provided. With the closed cross-sectional structure formed between the panel and the panel constituting the roof structure, the rigidity of the upper part of the pillar portion can be improved and the amount of bending deformation can be suppressed. Further, the axial force (in-plane force) of the inner wall, the outer wall, and the vertical wall of the pillar portion can be efficiently transmitted to the roof structure.

According to the fifth aspect of the invention, in addition to the effects of any one of the first to fourth aspects, since the inner wall and the outer wall are formed thicker than the vertical wall, the second moment of area of the pillar portion is increased. In addition, the bending rigidity can be improved.

According to the sixth aspect of the invention, in addition to the effects of any one of the first to fifth aspects, the corners between the inner wall and the outer wall and the vertical wall are formed to be thicker than other portions. ,
The cross-sectional deformation of the pillar portion can be suppressed, and the rigidity can be improved.

According to the seventh aspect of the present invention, in addition to the effect of any one of the first to sixth aspects, the connecting rib is provided at the intersection of the suspension mount bracket and the wheel house inner,
Since the wheel house inner is provided on at least one side of the bent portion outward in the vehicle width direction, the intersection of the wheel house inner and the pillar portion, the opening of the vertical rib in a portion which is particularly easily angularly deformed in the vertical direction is suppressed, Vertical angle changes can be suppressed.

According to the eighth aspect of the present invention, in addition to the effects of any one of the first to seventh aspects, the vertical ribs are formed to gradually widen downward in the vehicle width direction, and the upper end side reaches the horizontal ribs.
Since the lower end reaches the suspension mount bracket, the input from the suspension can be reliably dispersed from the vertical ribs to the vehicle body side via the horizontal ribs.

According to the ninth aspect of the invention, in addition to the effects of any one of the first to eighth aspects, the suspension mount bracket, the wheel house, and the pillar are integrally formed of light metal, so that the weight is reduced. While being able to
The number of molds can be reduced to one, and productivity can be improved.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1 to 21 illustrate a first embodiment of the present invention. First, FIG. 1 is a perspective view of a vehicle body side structure around a rear wheel house portion as a wheel house portion to which the first embodiment of the present invention is applied, as viewed from inside the vehicle body, and FIG. FIG. FIG. 2 also shows the roof structure. FIG. 3 is a sectional view taken along the line SA-SA in FIG.

First, as shown in FIGS. 1 to 3, a rear suspension mount bracket 7 as a suspension mount bracket, a rear wheel house 13 as a wheel house, and a rear pillar 15 as a pillar are made of an aluminum alloy. , Made of a casting of a light metal such as a magnesium alloy.

The rear suspension mount bracket 7, the rear wheel house 13 and the rear pillar 15
The vehicle body side structure is located between the rear side member 1 and the roof of the vehicle body roof constituted by the roof structure 17 shown in FIG.

The rear suspension mount bracket 7 is formed to be thicker than the other parts such as the rear wheel house 13 and the rear pillar 15. The rear wheel house section 13 includes a rear wheel house inner 3 as a wheel house inner and a rear wheel house outer 5 as a wheel house outer.

The rear wheel house inner 3 and the rear wheel house outer 5 are composed of lower upper and lower walls 3a, 5a and upper curved walls 3b, 5b. The lower end 3c of the upper and lower walls 3a of the rear wheel house inner 3 is formed stepwise toward the rear side member 1, and the lower end 3c is joined to the rear side member 1 by laser welding or the like.

The rear pillar 15 is provided with the rear fender 1
6, outer walls 19, 21 including a vertical wall 25 around a door, and forming an outer surface of a vehicle body skeleton;
Inner wall 23 located inside vehicle width direction with respect to 9 and 21
And two sets of vertical walls 25, 27, 29, 31 which connect the two walls 19, 21, 23 in the vehicle width direction and face each other in the vehicle longitudinal direction.

The inner wall 23 rises from between the curved walls 3b, 5b of the rear wheel house inner 3 and the rear wheel house outer 5, and is connected at the upper end to the side roof rail inner side of the roof structure 17 side. Connecting portion 23a and a connecting portion 23b connected to the rear roof rail inner.

The outer walls 19, 21 are formed so as to protrude outward in the vehicle width direction with respect to the inner wall 23, and both the front outer wall 19 and the rear outer wall 21 are located on the inner side in the vehicle width direction. It is formed so as to be inclined.
Step portions 19 are provided on the upper side of the outer walls 19 and 21, respectively.
a, 21a are provided.

The vertical walls 25, 27, 29, 31 are formed along the vehicle width direction.

The direction in which the basic body side structure is removed is in the horizontal direction and downward as shown by white arrows A, B, and C in FIG. 3, and the rear pillar portion 15 and the door of the rear fender are provided. The periphery 17 has an open section.

A reinforcement structure for such a basic vehicle body side structure will be further described. The rear pillar portion 15 includes a cross-sectional view of FIG. 4 taken along the line SB-SB in FIGS.
As shown in the cross-sectional view of FIG. 5 indicated by −SC, each has an open cross-section in the vehicle width direction, and at the position of FIG.
27; 29, 29; 31 are provided with lateral ribs 33, 35, 37 for connecting each other in the vehicle longitudinal direction. Further, a horizontal rib 39 connecting the vertical rib 31 and the inner wall 23 is provided.

The horizontal ribs 33 and 37 connect the vertical walls 25, 27, 29 and 31 to each other on the inner side in the vehicle width direction as shown in FIGS. 1 and 4, and the horizontal ribs 35 are connected to the vehicle width as shown in FIGS. The longitudinal ribs 27 and 29 are connected to each other on the outside in the direction. The vertical wall 25 is a mating surface of the rear door, and forms a part of the rear fender 16 around the door as described above.

As shown in FIGS. 4 and 5, the inner wall 23 and the outer walls 19 and 21 of the rear pillar portion 15 form a surface substantially parallel to the longitudinal direction of the vehicle body. In addition, each vertical wall 25,
Reference numerals 27, 29, and 31 constitute surfaces that are substantially perpendicular to the vehicle longitudinal direction. The horizontal ribs 33, 35, 37, and 39 are respectively provided with the vertical walls 25, 27, the outer wall 19, and the vertical walls 27, 2.
9 and the inner wall 23, the vertical walls 29 and 31, and the outer wall 21, the vertical wall 31 and the inner wall 23. The horizontal ribs 33, 35, 37, and 39 are parallel to the left and right die-cutting directions A and C shown in FIG.

The rear suspension mount bracket 7, the rear wheel house inner 3, and the rear pillar 1
5 are vertically connected to each other, and at least one set of longitudinal ribs 41 and 43 facing each other in the vehicle longitudinal direction is provided. The vertical ribs 41 and 43 are formed to gradually widen downward in the vehicle width direction, and have upper ends reaching the ends of the lateral ribs 33 and 37 and lower ends reaching the rear suspension bracket 7. The vertical ribs 41 and 43 are parallel to the die cutting direction arrow A shown in FIG.

A connecting rib 45 for connecting the vertical ribs 41 and 43 to each other in the longitudinal direction of the vehicle is provided. The position of the connecting rib 45 in the vertical direction is provided on the outer side of the bent portion at the boundary between the upper and lower walls 3a and the curved wall 3b of the wheel house inner 3 where bending deformation is large.

The connecting ribs 45 are also provided at the intersection of the suspension mount bracket 7 and the rear wheel house inner 3 or the intersection of the rear wheel house inner 3 and the rear pillar 15 where bending deformation is large. Can also.

A resin-made fender panel 47 is attached to the outer surface of the rear wheel house outer 5 as shown in FIG. The fender panel 47 is installed outside the rear pillar portion 15, the rear wheel house portion 13, and the roof structure 17 in FIGS.

The lower edge 17a of the panel 17a of the roof structure 17 constituting the roof has horizontal ribs 35 and 39.
And are fixed so as to ride on the steps 19a and 21a, and are fixed by laser welding or the like, and form a closed cross-sectional structure together with the inner wall 23 at this point.

For example, as shown in the sectional view of FIG. 7 as viewed in the direction of the arrows SD-SD in FIG. 2, the inner wall 23, the lateral rib 39 and the panel 17a constitute a closed sectional structure. Further, as shown in the cross-sectional view of FIG. 8 taken along the line SE-SE in FIG. 2, the outer wall 21, the stepped portion 21a, and the panel 17a constitute a closed cross-sectional structure.

Therefore, the outer wall 1 of the rear pillar portion 15
9, 21 and the inner wall 23, the lateral ribs 35 and 39 located on the outer side in the vehicle width direction of the inner wall 23, and the panel 17a on the roof structure 17 side constituting the roof constitute a closed sectional structure. ing.

A circumferential rib 4 extending in the vehicle width direction between the periphery of the door of the rear fender 16 and the rear wheel house 13.
7a, 47b and 47c are provided. Circumferential rib 47
A, 47b, and 47c are provided at predetermined intervals along the front-rear direction curvature of the rear wheel house outer 5, and a plurality of, for example, three are provided. In the present embodiment, the circumferential ribs 47a, 4
7b and 47c also extend to the rear wheel house inner 3.

Next, the effect on the suspension input will be described with reference to FIGS. Suspension input F
Acts as an out-of-plane load M1 on the rear suspension mount bracket portion 7 which is a suspension mounting portion, but since it is thick, deformation can be suppressed.
Further, between the rear suspension mount bracket 7 and the upper and lower walls 3a of the rear wheel house inner 3, an angle change due to the moment M1 due to the suspension input F can be suppressed by the vertical ribs 41 and 43.

Upper and lower walls 3a of the rear wheel house inner 3
Similarly, the angle between the first and second curved portions 3b is changed by the vertical ribs 41 and 4 as well.
3 can be suppressed. The change in the angle between the curved portion 3b of the rear wheel house inner 3 and the inner wall 23 of the rear pillar portion 15 can be similarly suppressed by the vertical ribs 41 and 43.

The moment M4 entering the rear pillar 15
From the upper portion of the vertical ribs 41 and 43 or the inner wall 23 of the rear pillar portion 15 to the vertical walls 27 and 29 and the horizontal ribs 3.
The input can also be dispersed to the outer wall 21 and the like via the 5 and the like, and can be caused to act as bending of the entire rear pillar 15, and local deformation of the rear pillar 15 can be suppressed.

With respect to the opening and closing of the vertical ribs 41 and 43 for suppressing the change in the angle from the rear suspension mount bracket 7 to the rear pillar 15, the connecting rib 45 works to suppress the deformation.

Further, the rear pillar portion 15 has an inner wall 23,
Since the outer walls 19 and 21 are connected by the vertical walls 25, 27, 29 and 31 and the horizontal ribs 33, 35, 37 and 39, high rigidity can be secured as a whole against bending moment.

Regarding the axial force of the suspension input F,
The inner wall 23, the outer wall 19 of the rear pillar portion 15,
21, axial force (in-plane force) F of vertical walls 25, 27, 29, 31
As 4, the light can be efficiently transmitted to the roof structure 17 side.

The circumferential ribs 47a, 47b, 47c can suppress an angle change between the inner wall 23 and the curved portion 3b of the rear wheel house inner 3 due to the bending moment M3 on the upper portion of the rear wheel house 13.

Further, as shown in FIGS. 7 and 8, a closed cross-section structure improves the rigidity of the upper portion of the rear pillar portion 15, further suppresses the amount of bending deformation, and furthermore, the inner wall 23 and the outer wall 19 of the rear pillar portion 15. , 21, vertical wall 25, 2
The axial forces (in-plane forces) of 7, 29, and 31 can be efficiently transmitted to the roof structure 17 side.

FIGS. 11 and 12 show a monocoque structure using a steel panel. FIGS. 13 and 14 show a special opening and closing 6-2.
FIG. 11 and FIG. 13 are cross-sectional views corresponding to FIG. 9, FIG. 12 is a cross-sectional view corresponding to FIG. 10, and FIG. 14 is a perspective view. is there. These FIG. 11, FIG. 12 or FIG.
14, the components corresponding to those in FIGS. 9 and 10 are denoted by the same reference numerals, and the inputs and moments corresponding to the suspension input F, the moment M1, and the like are denoted by the corresponding reference numerals.

FIGS. 9 and 10 of the first embodiment, FIGS. 11 and 12 of a monocoque structure using a steel panel, and FIGS. 13 and 14 described in JP-A-6-286652 using an aluminum alloy casting. FIG. 15 is a table showing a comparison of how the first embodiment takes measures against bending moment and axial force acting on each part in the above structure.

First, the portions where the bending moment and the like act are the suspension mount bracket portion 7, the upper and lower walls 3a and the curved wall 3b of the wheel house inner, and the inner wall 23 of the rear pillar portion 15. As input,
The bending moment and the axial force are applied, and a moderate bending moment M1 and a small axial force F1 are applied to the portion 7. Also in the other parts 3a, 3b, 23, large and
Medium and small are described, and bending moments M2, M3, respectively
It is assumed that M4 and axial forces F2, F3, F4 are working.

As a feature of each part, the part 7 is a strut fixing part and a bending moment is mainly applied thereto. The portion 3a is a vertical member, and mainly receives an axial force. Since the portion 3b has a large distance from the strut, the bending moment increases. In the portion 23, both the bending moment and the axial force increase.

First, in the steel monocoque structure shown in FIGS. 11 and 12, the part 7 is a separate part from the parts 3a, 3b and 23, and is made of a thick member. The part 3a is a separate part from the parts 7 and 23. Site 3b is site 7,2
3 is a different part. The part 23 is a separate part from the parts 7, 3a and 3b, and has a closed section by providing a reinforcement.
In addition, it forms a closed section together with the steel fender panel 47. And as reinforcement measures, parts 7, 3a,
Embossing is set to 3b, and vertical ribs of another part are set to the parts 7, 3a, 3b, and 23. This structure is heavy, has a large number of parts, and increases the number of molds.

In the structure shown in FIGS. 13 and 14 described in JP-A-6-286652, all of the parts 7, 3a, 3b and 23 are integrally formed of an aluminum alloy casting, and the rear fender panel 47 is assembled. . As a reinforcement structure,
Vertical ribs are provided for the portions 7, 3a, 3b, and 23, and ribs are provided on the front and back of the wheel house. Site 23
In contrast, ribs are installed at the upper corners of the pillars.
In this structure, the weight can be reduced, the number of parts is small, and the number of forming dies is small. However, measures for bending are not sufficient in the pillar portion 23 having a large bending moment.

On the other hand, in the structure of the first embodiment of the present invention,
The parts 7, 3a, 4b, and 23 are all integrally formed of an aluminum alloy casting, and the resin fender panel 47 is set. Further, vertical ribs are provided over the portions 7, 3a, 3b, 23, and embossing is set on the portions 7, 3a, 3b.

The portion 7 is set to be thick, the portion 3a has a horizontal rib, the portion 3b has a horizontal rib, a peripheral rib, and the portion 23 has an uneven open cross section, and a horizontal rib is set. It also forms a closed section with the roof side panel.

Due to such a difference in structure, in the first embodiment of the present invention, it is possible to suppress the deformation with respect to the input F as described above, and to surely transmit the load and disperse the load reliably. Can be.

FIGS. 16, 17, FIG. 18, FIG. 19, FIG. 20, and FIG. 21 show modifications of the first embodiment. In the example of FIGS. 1 to 8, the horizontal ribs 33, 35, 37, 3
9 are formed on the same plane, but in the example of FIGS. 16 and 17, the horizontal ribs 35 and 39 are arranged on the same plane at the cross-sectional position of FIG. 16 corresponding to FIG. 4 and correspond to FIG. FIG.
7, the other horizontal ribs 33 and 37 are set. 16 and 17, the horizontal ribs 35 and 39 are arranged according to the shape of the roof, and the other horizontal ribs 33 and 37 are formed in other cross sections.

Such lateral ribs 33, 35, 37, 39
The same operation and effect as described above can be achieved by the setting of. Further, the load can be more reliably transmitted from the vertical ribs 41, 43 to the horizontal ribs 33, 37, and the load can be more reliably distributed.

In the examples of FIGS. 18 and 19, the vertical wall 31 and the inner wall 23 shown in FIGS. 4 and 5 are omitted, the outer wall 21 is extended rearward and the horizontal rib 39 is enlarged accordingly. Things.

Since the trunk 49 is laser-welded to the rear end of the outer wall 21 in this manner, welding is facilitated. That is, the cross-sectional shape can be selected in consideration of a shape that can be easily welded, as long as the rigidity can be ensured.

FIG. 20 shows a cross section at the same position as in FIG. 4. In this example, the inner wall 23 and the outer walls 19 and 2 are shown.
1 is formed thicker than the vertical walls 25, 27, 29, 31. Therefore, the second moment of area around the central axis 51 increases, and the bending rigidity around the central axis 51 can be improved. Further, such local operations of the wall thickness of the inner wall 23 and the outer walls 19, 21 can be easily performed by molding with a casting such as an aluminum alloy.

FIG. 21 shows a cross section at the same position as FIG. 4, and shows corners 53a, 53 between the inner walls 23 and the outer walls 19, 21 and the vertical walls 25, 27, 29, 31.
b, 53c, 53d, 53e, 53f, 53g, 53h
Is formed to be thicker than other portions. Therefore, cross-sectional deformation hardly occurs and rigidity can be improved.

(Second Embodiment) FIGS. 22 to 27 relate to a second embodiment of the present invention. FIG. 22 is a perspective view corresponding to FIG. 1, FIG. 23 corresponds to FIG. 3, and SA-SA in FIG. FIG. 24 is a cross-sectional view taken along line SB-SB of FIG. 23, and FIG.
5 is a sectional view taken along line SC-SC in FIG. 23, and FIG.
23 is a sectional view taken along the line SD-SD, and FIG.
FIG. 4 is a cross-sectional view taken along line E. The components corresponding to those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

In the present embodiment, the sectional shape of the pillar portion 15 is changed, and the inner wall 55 is extended to the vehicle interior side, so that the second moment of area can be improved. Therefore, the bending rigidity can be improved as in the case of FIG.

FIGS. 28 and 29 show the second embodiment in which the lateral ribs 35 and 39 are arranged according to the shape of the roof, and the other lateral ribs 33 and 37 are arranged in other cross sections.

(Third Embodiment) FIGS. 30 to 35 relate to a third embodiment of the present invention. FIG. 30 is a perspective view corresponding to FIG. 1, and FIG. 31 corresponds to FIG. 32 is a sectional view taken along line SB-SB of FIG. 31, and FIG.
3 is a sectional view taken along line SC-SC in FIG. 31, and FIG.
FIG. 35 is a sectional view taken along the line SD-SD of FIG.
FIG. 4 is a cross-sectional view taken along line E. The components corresponding to those of the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, the vertical ribs 57, 59
Are joined to the outer wall 19. The upper ends of the vertical ribs 57 and 59 are below the horizontal rib 33, and a connecting rib 60 is provided at the upper end. Therefore, in the present embodiment, the moment input can be distributed directly from the vertical ribs 57 and 59 to the outer wall 19. When the vertical ribs 59 are used as the mounting surface of the seat back, the positions of the vertical ribs 59 can be changed in conjunction with the position of the seat back.

FIGS. 36 and 37 show the third embodiment in which the horizontal ribs 35 and 39 are arranged in accordance with the shape of the roof, and the other horizontal ribs 33 and 37 are formed in other cross sections.

(Fourth Embodiment) FIGS. 38 to 43 relate to a fourth embodiment of the present invention. FIG. 38 is a perspective view corresponding to FIG. 1, and FIG. 39 corresponds to FIG. FIG. 40 is a sectional view taken along line SB-SB of FIG. 39, and FIG.
1 is a sectional view taken along the line SC-SC in FIG. 39, and FIG.
FIG. 43 is a sectional view taken along line SD-SD of FIG.
FIG. 4 is a cross-sectional view taken along line E. The components corresponding to those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, the suspension mount bracket 7 is located above the wheel house 13 in response to the suspension type difference. In this case, the vertical ribs 61 and 63 become shorter in the vertical direction, and connect the suspension mount bracket portion 7 and the pillar portion 13 so as to extend vertically and face each other in the vehicle longitudinal direction. The connecting rib 45 connecting the vertical ribs 61 and 63 to each other is formed on the inner wall 23 of the pillar portion 15.

Therefore, in this embodiment, the vertical ribs 61, 6
3 is short and the connecting ribs 45 are formed on the inner wall 23, so that the load can be more easily dispersed and local deformation can be suppressed more reliably.

FIGS. 44 and 45 show that the horizontal ribs 35 and 39 are arranged in accordance with the shape of the roof, and the other horizontal ribs 33 and 37 are formed in other cross sections.

(Fifth Embodiment) FIGS. 46 to 48 relate to the fifth embodiment, and FIG. 46 is a perspective view corresponding to FIG.
46 is a sectional view taken along line SA-SA of FIG. 46, and FIG. 48 is a sectional view taken along line SF-SF of FIG. The components corresponding to those in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

In this embodiment, the vertical ribs 41, 43
Are provided with extension portions 41a and 43a, and the extension portions are connected to the side member 1. This connection is performed by laser welding or the like. The cross section of the pillar portion 15 has a shape including a curved surface as long as rigidity can be ensured.
Therefore, a change in angle between the side member 1 and the suspension mount bracket 7 can be suppressed by the extension portions 41a and 43a. In addition, by adopting the cross-sectional shape as shown in FIG. 48, the surface area can be reduced and the weight can be reduced. In addition, consistency with the door can be ensured.

In each of the above embodiments, the rear side is described as the wheel house portion. However, the structure around the front wheel house portion can be similarly configured. In the above embodiments, the whole is integrally formed of a light metal made of a casting such as an aluminum alloy or a magnesium alloy. However, the material may be formed of another material.

[Brief description of the drawings]

FIG. 1 is a perspective view according to a first embodiment of the present invention.

FIG. 2 is a perspective view according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line SA-SA of FIG. 1;

FIG. 4 is a sectional view taken along line SB-SB of FIGS. 1 and 2;

FIG. 5 is a sectional view taken along line SC-SC of FIGS. 1 and 2;

FIG. 6 is a sectional view taken along line SA-SA of FIG. 1;

FIG. 7 is a sectional view taken along line SD-SD in FIG. 2;

FIG. 8 is a sectional view taken along line SE-SE of FIG. 2;

FIG. 9 is a cross-sectional view illustrating an operation according to the first embodiment.

FIG. 10 is a cross-sectional view illustrating an operation according to the first embodiment as viewed from above.

FIG. 11 is a sectional view of a monocoque structure using a steel panel.

FIG. 12 is a sectional view of the monocoque structure of the steel panel as viewed from above.

FIG. 13 is a sectional view of a conventional aluminum alloy casting.

FIG. 14 is a perspective view of a structure made of a conventional aluminum alloy casting.

FIG. 15 is a table for explaining features of the first embodiment.

FIG. 16 is a cross-sectional view at the same position as in FIG. 4 according to a modification of the first embodiment.

FIG. 17 is a cross-sectional view of the same position as in FIG. 5 according to a modification of the first embodiment.

FIG. 18 is a cross-sectional view at the same position as FIG. 4 according to another modification of the first embodiment.

FIG. 19 is a cross-sectional view at the same position as FIG. 5 according to another modification of the first embodiment.

FIG. 20 is a cross-sectional view at the same position as in FIG. 5, according to still another modified example of the first embodiment.

FIG. 21 is a cross-sectional view at the same position as in FIG. 5, according to yet another modification of the first embodiment.

FIG. 22 is a perspective view according to a second embodiment of the present invention.

FIG. 23 is a sectional view taken along line SA-SA of FIG. 22;

FIG. 24 is a sectional view taken along line SB-SB in FIG. 23;

FIG. 25 is a sectional view taken along line SC-SC of FIG. 23;

FIG. 26 is a sectional view taken along line SD-SD in FIG. 23;

FIG. 27 is a sectional view taken along line SE-SE of FIG. 23;

FIG. 28 is a cross-sectional view of the same position as in FIG. 24 according to a modification of the second embodiment.

FIG. 29 is a cross-sectional view of the same position as in FIG. 25 according to a modification of the second embodiment.

FIG. 30 is a perspective view according to a third embodiment of the present invention.

FIG. 31 is a sectional view taken along line SA-SA of FIG. 30;

FIG. 32 is a sectional view taken along line SB-SB in FIG. 31;

FIG. 33 is a sectional view taken on line SC-SC of FIG. 31;

34 is a sectional view taken along line SD-SD in FIG. 31.

FIG. 35 is a sectional view taken along line SE-SE of FIG. 31;

FIG. 36 is a cross-sectional view at the same position as FIG. 32 according to a modification of the third embodiment.

FIG. 37 is a cross-sectional view at the same position as in FIG. 33 according to a modification of the third embodiment.

FIG. 38 is a perspective view according to a fourth embodiment of the present invention.

FIG. 39 is a sectional view taken along line SA-SA of FIG. 38;

40 is a sectional view taken along line SB-SB in FIG. 39.

FIG. 41 is a sectional view taken along line SC-SC of FIG. 39;

42 is a sectional view taken along line SD-SD in FIG. 39.

FIG. 43 is a sectional view taken along line SE-SE of FIG. 39;

FIG. 44 is a cross-sectional view at the same position as in FIG. 40 according to a modification of the fourth embodiment.

FIG. 45 is a cross-sectional view at the same position as FIG. 41 according to a modification of the fourth embodiment.

FIG. 46 is a perspective view according to a fifth embodiment of the present invention.

FIG. 47 is a sectional view taken along line SA-SA of FIG. 46;

FIG. 48 is a sectional view taken along the line SF-SF in FIG. 47;

FIG. 49 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side member 3 Wheel house inner 5 Wheel house outer 7 Rear suspension mount bracket part 13 Rear wheel house part 15 Rear pillar part 19, 21 Outer wall 23, 55 Inner wall 25, 27, 29, 31 Vertical wall 33, 35, 37 Side Ribs 41, 43, 57, 59, 61, 63 Vertical ribs 45, 60 Connecting ribs 47a, 47b, 47c Peripheral rib 55 Inner wall

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62D 25/04 B62D 25/04 D 25/20 25/20 C

Claims (9)

[Claims] 1. A vehicle body side structure in which a suspension mount bracket portion, a wheel house portion including a rear wheel house inner and a wheel house outer and a pillar portion are located between a roof and a side member and are integrally formed. The suspension mount bracket portion is formed to be thicker than other portions, and the pillar portion includes a part of a fender around a door, an outer wall forming an outer surface of a vehicle body frame, and a vehicle width direction inner side with respect to the outer wall. At least one pair of vertical walls which connect the inner wall and the two walls in the vehicle width direction and which are opposed to each other in the vehicle longitudinal direction; a lateral rib connecting the vertical walls to each other in the vehicle longitudinal direction; and the suspension mount bracket portion And at least one set of vertical ribs which are connected so as to cross the upper and lower portions and in the longitudinal direction of the vehicle body, A vehicle body side structure, characterized by comprising a connecting rib connecting the longitudinal ribs cross in the longitudinal direction of the vehicle body. 2. The vehicle body side structure according to claim 1, wherein the longitudinal rib connects the suspension mount bracket, the wheel house inner, and the pillar so as to extend vertically. Side structure. 3. The vehicle body side structure according to claim 1, wherein a circumferential rib is provided along a vehicle width direction between a part around the door of the fender and the wheel house. Body side structure. 4. The vehicle body side structure according to claim 1, wherein an outer wall and an inner wall of the pillar portion, a lateral rib located outside the inner wall in a vehicle width direction, and the roof. The vehicle body side structure, wherein a closed cross-sectional structure is formed between the panel and the panel on the side of the roof structure. 5. The vehicle body side part according to claim 1, wherein the inner wall and the outer wall are formed thicker than the vertical wall. Construction. 6. The vehicle body side structure according to claim 1, wherein a corner between the inner wall and the outer wall and the vertical wall is formed thicker than other portions. A vehicle body side structure characterized by the following. 7. The vehicle body side structure according to claim 1, wherein the connection rib is an intersection between the suspension mount bracket and a wheel house inner, and a vehicle width direction of the wheel house inner. A vehicle body side structure provided on at least one of an outward bent portion and an intersection of a wheel house inner and a pillar portion. 8. The vehicle body side structure according to claim 1, wherein the longitudinal rib is formed so as to be gradually widened downward in a vehicle width direction, and an upper end side reaches the lateral rib. A vehicle body side structure, wherein a lower end side reaches the suspension bracket. 9. The vehicle body side structure according to claim 1, wherein the suspension mount bracket, the wheel house inner part, and the pillar are integrally formed of a light metal casting. A vehicle body side structure characterized by the following.