JP7445223B2 - Vehicle side structure - Google Patents

Description

The present invention relates to a vehicle side structure.

BACKGROUND ART Vehicles such as electric cars and regular cars are equipped with in-vehicle components such as battery packs and fuel tanks, and for reasons of layout, these in-vehicle components are provided at the bottom of the vehicle, such as below the vehicle body floor. Therefore, in a vehicle such as an electric vehicle, it is necessary to take measures to avoid damage to vehicle-mounted members particularly due to the impact load at the time of a vehicle side collision.
Therefore, in some conventional vehicles, a shock absorbing member is additionally provided inside the side sill on the outside in the vehicle width direction, and a side member is provided that is joined to the floor panel at the position of the side sill on the inside of the vehicle. By providing a battery frame (cross member) that is joined to the panel via a collar and bracket, the battery frame that supports the battery pack, etc. is prevented from separating from the floor panel in the event of a side collision. (For example, see Patent Document 1).

Japanese Patent Application Publication No. 2013-60160

However, in the conventional vehicle side structure described above, the side member and the bracket are joined to the floor panel located on the inside of the side sill, and a high-rigidity portion is present on the inside of the side sill. In response to a load in the vehicle width direction, the side sill is displaced in the vertical direction of the vehicle around the high-rigidity portion, which may result in insufficient load transmission and increase the amount of intrusion of the side sill into the inside of the vehicle.

The present invention has been made in view of the above circumstances, and its purpose is to suppress displacement of the side sill in the vertical direction of the vehicle due to the load applied in the vehicle width direction at the time of a side collision, and to suppress the displacement of the side sill in the vehicle vertical direction. To provide a vehicle side structure capable of efficiently transmitting loads in the vehicle width direction to the vehicle width direction, improving the load absorption performance of the side sills in the vehicle width direction, and suppressing the amount of intrusion of the side sills into the inside of the vehicle. .

In order to solve the problems of the prior art described above, the present invention provides a pair of left and right side members that are provided on the side portions of the lower surface of the floor panel in the vehicle width direction and extend in the vehicle longitudinal direction, and an outer side of the side members in the vehicle width direction. a pair of left and right side sills provided on the vehicle and extending in the longitudinal direction of the vehicle; and a cross member on the floor that is provided on the upper surface of the floor panel and extends in the vehicle width direction to connect the pair of left and right side sills; In a vehicle side structure in which a shock absorbing member is provided inside, and a vehicle outer end of the floor panel has a side sill side joint part joined to the side sill, the side member and the side sill are A cross member under the floor that extends in the vehicle width direction and connects the pair of left and right side members is provided below the pair of left and right side members that are arranged adjacent to each other in the vehicle width direction , and that extends in the vehicle width direction and connects the pair of left and right side members. The panel has an inclined surface that slopes downward from the inside of the vehicle to the outside of the vehicle in the vehicle width direction, and an in-vehicle member is mounted below the inclined surface, while the inclined surface of the floor panel has A vehicle outer side end portion of a floor reinforcing member having a side member side joint portion joined to the side member is joined, and a vehicle inner side end portion of the floor reinforcing member is connected to the floor panel at a position on the vehicle inner side than the inclined surface. is joined to .

In the vehicle side structure of the present invention, the side member and the side sill are joined next to each other, resulting in a structure in which the side sill is supported by the side member, so that the side sill has better load absorption performance from the vehicle width direction. can be improved.

FIG. 2 is a perspective view of a floor panel, a side sill, and an upper cross member on the floor viewed from above the vehicle in the vehicle side structure according to the embodiment of the present invention. 2 is a sectional view taken along line AA in FIG. 1. FIG. FIG. 2 is a cross-sectional perspective view of the upper cross member on the side sill and floor in FIG. 1 and its surroundings, viewed from above the vehicle. FIG. 2 is a perspective view of the floor panel in FIG. 1 viewed from below the vehicle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on illustrated embodiments.
In the figure, the direction of arrow Fr indicates the front of the vehicle, and the direction of arrow O indicates the outside in the vehicle width direction. Further, the arrow X direction indicates the vehicle width direction, and the arrow Y direction indicates the vehicle longitudinal direction.

1 to 4 show a vehicle side structure according to an embodiment of the present invention. As shown in FIGS. 1 to 4, the vehicle side structure of the present embodiment is provided on the side in the vehicle width direction of the lower surface of a floor panel 1 that extends in the vehicle width direction and in the vehicle longitudinal direction, and extends in the vehicle longitudinal direction. A pair of left and right side members 2, a pair of left and right side sills 3 provided on the outside of these side members 2 in the vehicle width direction and extending in the vehicle longitudinal direction, and a left and right pair of side sills 3 provided on the upper surface of the floor panel 1 and extending in the vehicle width direction. and an upper cross member 4 on the floor that connects the side sills 3 of the vehicle.
Further, as shown in FIGS. 2 and 3, the side sill 3 of this embodiment has a closed cross-sectional structure with a side sill inner panel 31 on the inside of the vehicle and a side sill outer panel 32 on the outside of the vehicle. The side sill outer panel 32 has a hat-shaped cross section with openings facing each other and upper and lower ends 31a, 31b, 32a, 32b joined at substantially the same position in the vehicle width direction. A shock absorbing member 5 is provided inside the side sill 3 to absorb a load applied to the side sill outer panel 32 and the like in the vehicle width direction. Furthermore, the vehicle outer end portion 1a of the floor panel 1 has a side sill side joint portion 10 that is joined to the side sill inner panel 31 of the side sill 3. Note that since the vehicle outer end 1a of the floor panel 1 and the side sill inner panel 31 are joined, the floor panel 1 is cut out at the joint with the upper cross member 4 on the floor. .

In the vehicle side structure of this embodiment, as shown in FIGS. 2 and 3, the side member 2 and the side sill 3 are disposed adjacent to each other in the vehicle width direction, and the side member 2 is at least connected to the side sill 3. They are arranged so that some of them overlap when viewed from the side of the vehicle. The side member 2 in the vehicle side structure of this embodiment is provided at a position lower than the height position of the side sill 3 in the vehicle vertical direction. Further, the side member 2 has a first joint W1 joined to the side surface of the side sill inner panel 31 of the side sill 3, and the first joint W1 is connected to the side surface of the shock absorbing member 5 when viewed from the side of the vehicle. It is placed in a position that overlaps with the inner upper part. That is, the side member 2 and the side sill 3 are joined to each other via the first joining portion W1 in an adjacent state. Here, the first joint W1 is arranged along the vehicle longitudinal direction in order to join the side member 2 and the side sill 3.
Therefore, the side sill 3 has a structure that is supported by the side member 2 against the load from the outside in the vehicle width direction, and is configured so that the side sill 3 absorbs the load from the outside in the vehicle width direction. Note that the first joint portion W1 may be disposed at a position higher than the vehicle outer side end 1a of the floor panel 1 in the vehicle.

As shown in FIGS. 1 to 3, the upper cross member 4 on the floor in this embodiment has a hat-shaped cross section with an opening facing downward, and a flange portion 40 protruding in the longitudinal direction of the vehicle. , are joined to the upper surface of the floor panel 1 and the side surface of the side sill inner panel 31. The upper cross member 4 on the floor includes a main body portion 41 on the inside of the vehicle that extends along the center surface 11 of the floor panel 1, and an inclined portion 42 that extends downwardly from the inside of the vehicle in the vehicle width direction toward the outside of the vehicle. It is equipped with The inclined portion 42 has a second joint W2 that is joined to the side sill inner panel 31 of the side sill 3 at an outer end 42a in the vehicle width direction extending in the horizontal direction. 31 is located on the upper surface 31c.
As a result, the second joint W2 is joined to the side sill inner panel 31 from above the vehicle, and the first joint W1 is joined to the side sill inner panel 31 from the inside in the vehicle width direction, so that the joints intersect with each other. Therefore, the structure is such that movement of the side sill 3 due to an impact load from the outside in the vehicle width direction is suppressed. Note that a seat bracket 43 is attached to the upper part of the upper cross member 4 on the floor.

As shown in FIGS. 2 and 3, the side member 2 of this embodiment has a planar lower surface 2a, and both inner and outer walls located on the inner and outer sides of the lower surface 2a in the vehicle width direction and extending upwardly of the vehicle. 2b and 2c, and has a substantially U-shaped cross section. Inside the side member 2, a reinforcement 21 is provided which is joined to the inner wall 2b and outer wall 2c of the side member 2 and connects the inner and outer walls 2b, 2c. Further, an upper closed section S1 configured by being combined with the floor panel 1 is provided on the upper side of the reinforcement 21, and the upper closed section S1 is located inside the side sill 3 when viewed from the side of the vehicle. It is arranged at a position overlapping with the shock absorbing member 5 of. With this arrangement, the upper closed section S1 supports the shock absorbing member 5 against loads from outside in the vehicle width direction, resulting in a structure that promotes load absorbing performance.

On the other hand, in the vehicle side structure of this embodiment, as shown in FIGS. 2 and 3, the lower sides of the pair of left and right side members 2 extend in the vehicle width direction and connect the pair of left and right side members 2. A lower cross member 6 under the floor is provided, and the lower cross member 6 under the floor is fixed to the side member 2 by a cylindrical fixing member 7 joined to the reinforcement 21 in the side member 2. has been done. That is, the side member 2 is supported by the lower cross member 6 under the floor via the reinforcement 21 and the fixing member 7.
Therefore, the lower cross member 6 under the floor has a main body part 61 having a closed cross-section structure to which a vehicle-mounted member described below is fixed by a fixing part D, and a flange part 62 fixed to the side member 2. The main body portion 61 is located at an intermediate portion of the lower cross member 6 in the vehicle width direction, and includes a pair of upper and lower member bodies 61a and 61b that are vertically spaced apart from each other. The flange portion 62 is located at the outer end of the lower cross member 6 in the vehicle width direction, and is connected to the pair of upper and lower member bodies 61a so as to close the outer open end of the main body portion 61 in the vehicle width direction when viewed from the rear of the vehicle. , 61b.
Furthermore, a female thread is formed on the inner circumferential surface of the fixing member 7 to be engaged with a male thread of a shaft portion of a fastening bolt 71 that fastens the side member 2 and the lower cross member 6. The upper portion 7a of the fixing member 7 projects above the mounting surface 21a through the mounting hole 21d, and is joined to the reinforcement 21 with the intermediate portion 7c in contact with the lower surface of the mounting surface 21a. A lower portion 7b of the fixing member 7 is joined onto the lower surface 2a of the side member 2.
Further, the reinforcement 21 is connected to a mounting surface 21a located above the lower surface 2a of the side member 2 and spaced apart from the lower surface 2a, and to the left and right side walls 2b, 2c of the side member 2. The mounting surface 21a has a mounting hole 21d into which the upper part of the fixing member 7 is inserted. Note that the lower surface 2a of the side member 2 and the main body portion 61 and flange portion 62 of the lower cross member 6 are provided with fastening holes corresponding to the through holes 85 of the bracket member 8 and the mounting holes 21d of the reinforcement 21, which will be described later. Insertion holes 2d, 61c, and 62a are provided through which the shaft portion of the bolt 71 is inserted.
As a result, when an external load is input to the reinforcement 21 in the side member 2, the external load is transmitted from the fixing member 7 to the lower cross member 6 under the floor, and the load is transmitted and The structure is designed to promote dispersion.

Further, in the vehicle side structure of this embodiment, the side member 2 and the flange portion 62 of the lower cross member 6 are fixed via the bracket member 8, as shown in FIGS. 2 and 3. By combining the bracket member 8 and the lower cross member 6, a lower closed section S2 is formed that increases the rigidity around the fixed portion of the bracket member 8. This lower closed cross-section portion S2 is arranged at a position straddling the boundary region R between the main body portion 61 and the flange portion 62 of the lower cross member 6 in the vehicle width direction. The position of the stress concentration part of the fixed part with the member 6 is shifted. Furthermore, the bracket member 8 has a cross member side fixing portion 81 that is fixed to the main body portion 61 of the lower cross member 6 at a position on the inside in the vehicle width direction.
The bracket member 8 of this embodiment is formed into a rectangular shape when viewed from the top of the vehicle, and includes a side member side fixing portion 82 fixed to the lower surface 2a of the side member 2, and an inner end in the vehicle width direction of the side member side fixing portion 82. It has an inclined surface 83 that extends from the cross member side fixing section 81 to the cross member side fixing section 81 and slopes downward toward the inner side in the vehicle width direction. Note that the side member side fixing portion 62 is provided with a through hole 85 through which the shaft portion of the fastening bolt 71 is inserted.
As a result, the load from the side member 2 is smoothly transmitted to the lower cross member 6 via the side member side fixing portion 82 and the inclined surface 83 of the bracket member 8, and local load concentration is suppressed. ing.

Furthermore, in the vehicle side structure of this embodiment, the lower cross member 6 under the floor is located on the inside in the vehicle width direction in the boundary region R between the main body part 61 and the flange part 62, as shown in FIGS. 2 and 3. It has a curved portion 63 that curves toward. That is, the curved portion 63 is formed in a horizontal substantially S-shape that is curved inward in the vehicle width direction from the flange portion 62 located above the lower cross member 6 toward the lower member body 61b of the main body portion 61. The peripheral portion of the curved portion 63 is joined to the lower member body 61b of the main body portion 61. The curved portion 63 having such a shape reduces the change in the cross-sectional area of the total closed cross-section, which is the sum of the closed cross-section S2 on the bracket member 8 side and the closed cross-section of the main body 61 of the lower cross member 6, and increases the total closed cross-section. A structure that maintains the area of the cross section can be obtained.
Further, the curved portion 63 of the lower cross member 6 has rigidity against loads in the vehicle vertical direction. Therefore, the curved portion 63 is arranged at a position overlapping the inclined surface 83 of the bracket member 8 in the vehicle width direction. Accordingly, when a load is concentrated on the part where the curved part 63 and the main body part 61 are joined and deformation occurs, since the curved part 63 is disposed within the range of the slope 83, the slope 83 The structure is such that the load is transmitted to the curved portion 63, thereby preventing the load from being concentrated on the curved portion 63.

Note that between the bracket member 8 of this embodiment and the flange portion 62 of the lower cross member 6, as shown in FIG. 2 and FIG. A cylindrical fixing auxiliary member 72 is provided. The fixing auxiliary member 72 can be disposed between the side member side fixing part 82 of the bracket member 8 and the upper member body 61a of the main body part 61 of the lower cross member 6, and the upper and lower surfaces of the cylindrical body are attached to the side member side. It has a vertical length that allows it to come into contact with the side fixing portion 82 and the upper member body 61a. Further, the fixing auxiliary member 72 has an inner diameter through which the fastening bolt 71 can be inserted. Moreover, the fixing member 7 and the fixing auxiliary member 72 are fastened together by a fastening bolt 71, and have a structure in which the rigidity of the fastening bolt 71 in the vehicle width direction can be utilized. Thereby, the load input from the side member 2 is transmitted to the lower cross member 6 via the fixing auxiliary member 72, and the distribution of the load is further promoted.

As shown in FIGS. 1 to 4, the floor panel 1 in the vehicle side structure of the present embodiment has a central surface 11 that bulges toward the top of the vehicle (inside the passenger compartment). is formed in a rectangular shape when viewed from above the vehicle on the inside of the passenger compartment. Furthermore, the floor panel 1 of this embodiment has an inclined surface 12 that is inclined downwardly from the center surface 11 on the inner side of the vehicle to the outer side of the vehicle in the vehicle width direction. A vehicle-mounted member 100 such as a tank is mounted. On the other hand, on the inclined surface 12 of the floor panel 1, as shown in FIG. The vehicle inner side end 9b of the floor reinforcing member 9 is joined to the floor panel 1 at a position (center surface 11) on the vehicle inner side than the inclined surface 12. There is. Therefore, the floor reinforcing member 9 is arranged along the central surface 11 and the inclined surface 12 of the floor panel 1 while extending in the vehicle width direction.
That is, in the vehicle side structure of this embodiment, when a load from the outside in the vehicle width direction is input to the side member 2, the floor reinforcing member 9 suppresses deformation of the inclined surface 12 of the floor panel 1 toward the inside of the vehicle. The structure is such that the load is smoothly transmitted to the side member 2.

On the other hand, in the shock absorbing member 5 of this embodiment, as shown in FIGS. 2 and 3, the openings are arranged facing each other, and the upper and lower ends 51a, 51b, 52a, and 52b are joined at approximately the same position in the vehicle width direction. The inner member 51 and the outer member 52 have a hat-shaped cross section, and the upper and lower middle portions 53a and 53b extend straight in the vertical direction of the vehicle, and the upper and lower intermediate portions 53a and 53b are located between the upper and lower end portions 51a, 51b, 52a, and 52b of the inner member 51 and the outer member 52, respectively. The central member 53 is sandwiched and joined with the upper and lower parts 53c and 53d sandwiched between the upper and lower ends 31a and 31b of the side sill inner panel 31 and the upper and lower ends 32a and 32b of the side sill outer panel 32. have.
Therefore, when a load in the vehicle width direction is input from the side sill outer panel 32 of the side sill 3 to the shock absorbing member 5, the inner member 51 and the outer member 52 deform almost uniformly toward the inside of the vehicle due to the intervention of the central member 53. Therefore, the shock absorbing member 5 having high load absorbing performance is provided inside the side sill 3.

As described above, the vehicle side structure according to the embodiment of the present invention includes a pair of left and right side members 2 provided on the lower surface of the floor panel 1 at the vehicle width direction side portions and extending in the vehicle longitudinal direction, and a vehicle side member 2 of the side member 2. A pair of left and right side sills 3 provided on the outside in the width direction and extending in the longitudinal direction of the vehicle; and an upper cross member 4 on the floor that is provided on the upper surface of the floor panel 1 and extends in the vehicle width direction to connect the pair of left and right side sills 3. It is equipped with The side sill 3 is composed of a side sill inner panel 31 on the inside of the vehicle and a side sill outer panel 32 on the outside of the vehicle, and a shock absorbing member 5 is provided inside the side sill 3. It has a side sill side joint part 10 which is joined to the side sill side joint part 3. Further, the side member 2 and the side sill 3 are arranged adjacent to each other in the vehicle width direction, and the side member 2 is arranged at a position where at least a portion of the side member 2 overlaps the side sill 3 when viewed from the side of the vehicle. Moreover, the side member 2 has a first joint W1 that is joined to the side sill 3 and is arranged along the longitudinal direction of the vehicle. It is arranged at a position that has a portion that overlaps with the inner upper part.
Therefore, in the vehicle side structure of the present invention, the side member 2 and the side sill 3 are joined in a state adjacent to each other in the vehicle width direction, so that the side sill 3 on the outside of the vehicle is supported by the side member 2 on the inside of the vehicle. Because of this structure, the load absorption performance of the side sill 3 from the vehicle width direction can be improved. Furthermore, in the vehicle side structure of the present invention, the first joint W1 of the side member 2 is located above the floor panel 1 in the vehicle vertical direction, so when a load is input from the vehicle width direction, the side sill 3 To suppress displacement of the side member 2 in the vertical direction of the vehicle, to efficiently transmit the load to the side member 2 and the upper cross member 4 on the floor, and to reduce the amount of intrusion of the side sill 3 into the inside of the vehicle. Can be done.

Further, in the vehicle side structure of the present embodiment, the upper cross member 4 on the floor includes an inclined portion 42 extending downward from the inside of the vehicle in the vehicle width direction toward the outside of the vehicle. It has a second joint W2 that is joined to the side sill inner panel 31 at the outer end 42a in the width direction, and the second joint W2 is located on the upper surface 31c of the side sill inner panel 31.
Therefore, in the vehicle side structure of this embodiment, the second joint W2 of the upper cross member 4 on the floor is joined to the upper surface 31c of the side sill inner panel 31 from above the vehicle, and the first joint W1 of the side member 2 is Since it is joined to the side surface of the side sill inner panel 31 from the inside in the vehicle width direction, and the two joint parts W1 and W2 intersect each other, movement of the side sill 3 due to an impact load from the outside in the vehicle width direction is prevented. This can further improve the impact load absorption effect of the side sill 3.

In the vehicle side structure of this embodiment, the side member 2 has an inner wall 2b and an outer wall 2c, and inside the side member 2 there is a link that is joined to the inner wall 2b and the outer wall 2c. A forcement 21 is provided. An upper closed section S1 configured by being combined with the floor panel 1 is provided on the upper side of the reinforcement 21, and the upper closed section S1 is arranged at a position overlapping with the shock absorbing member 5 when viewed from the side of the vehicle. has been done.
Therefore, according to the vehicle side structure of the present embodiment, the upper closed section S1 can support the shock absorbing member 5 against the load from the outside in the vehicle width direction, and the load absorption performance of the shock absorbing member 5 increases. can be further promoted.

Furthermore, in the vehicle side structure of this embodiment, a lower cross member 6 under the floor is provided below the pair of left and right side members 2, extending in the vehicle width direction and connecting the pair of left and right side members 2. The lower cross member 6 under the floor is fixed to the side member 2 by a fixing member 7 joined to the reinforcement 21.
Therefore, in the vehicle side structure of this embodiment, when an impact load at the time of a side collision is input to the reinforcement 21 in the side member 2, this impact load is transferred from the fixed member 7 to the lower cross member under the floor. 6, it is possible to promote the load transmission performance and increase the load dispersion effect, and it is possible to support the side member 2 more firmly compared to the conventional vehicle side structure. .

In the vehicle side structure of the present embodiment, the floor panel 1 has an inclined surface 12 that slopes downward from the inside of the vehicle to the outside of the vehicle in the vehicle width direction, and below the inclined surface 12, an in-vehicle member 100 is installed. It is installed. On the other hand, the vehicle outer side end 9a of the floor reinforcing member 9 having the side member side joint part 91 joined to the side member 2 is joined to the inclined surface 12 of the floor panel 1, and the vehicle inner side end 9a of the floor reinforcing member 9 is joined to the inclined surface 12 of the floor panel 1. 9b is joined to the floor panel 1 at a position closer to the inside of the vehicle than the inclined surface 12.
Therefore, in the vehicle side structure of this embodiment, when a load from the vehicle width direction is input to the side member 2, deformation of the inclined surface 12 of the floor panel 1 toward the inside of the vehicle is suppressed by the floor reinforcing member 9. Therefore, the load from the vehicle width direction is easily transmitted to the side member 2, and the load transmission in the vehicle width direction can be promoted.

In the vehicle side structure of the present embodiment, the shock absorbing member 5 has a cross-sectional hat whose openings are arranged facing each other and whose upper and lower ends 51a, 51b, 52a, and 52b are joined at substantially the same position in the vehicle width direction. The mold-shaped inner member 51 and outer member 52 extend straight in the vehicle vertical direction, and upper and lower intermediate portions 53a and 53b are sandwiched between the upper and lower end portions 51a, 51b, 52a, and 52b of the inner member 51 and the outer member 52. In addition, the upper and lower parts 53c and 53d have a central member 53 which is joined to the side sill inner panel 31 and the side sill outer panel 32 while being sandwiched therebetween.
Therefore, according to the vehicle side structure of this embodiment, when a load in the vehicle width direction is input from the side sill outer panel 32 of the side sill 3 to the shock absorbing member 5, the inner member 51 and the outer member 52 with the central member 53 interposed can be deformed almost uniformly toward the inside of the vehicle, and the load absorbing performance of the shock absorbing member 5 can be further improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications and changes can be made based on the technical idea of the present invention.

1 Floor panel 1a Vehicle outer end 2 Side member 2a Lower surface 2b Inner wall 2c Outer wall 2d Insertion hole 3 Side sill 4 Upper cross member on the floor 5 Shock absorbing member 6 Lower cross member under the floor 7 Fixing member 7a Upper part 7b Lower part 7c Intermediate portion 8 Bracket member 9 Floor reinforcing member 9a Vehicle outer end 9b Vehicle inner end 10 Side sill joint 12 Floor panel slope 21 Reinforcement 21a Mounting surface 21b, 21c Side surface 21d Mounting hole 31 Side sill inner panel 31a Upper end part 31b Lower end part 31c Upper surface 32 Side sill outer panel 32a Upper end part 32b Lower end part 40 Flange part of the upper cross member on the floor 41 Main body part of the upper cross member on the floor 42 Inclined part of the upper cross member on the floor 42a Vehicle width direction Outer end part 51 Inner member of the shock absorbing member 51a Upper end part 51b Lower end part 52 Outer member of the impact absorbing member 52a Upper end part 52b Lower end part 53 Central member 53a Upper intermediate part 53b Lower intermediate part 53c Upper part 53d Lower part 61 Lower side under the floor Body part of cross member 61c Insertion hole 62 Flange part of lower cross member under the floor 62a Insertion hole 63 Curved part 71 Fastening bolt 85 Through hole of bracket member 91 Side member side joint part of floor reinforcing member 100 Vehicle-mounted member S1 Upper side closing Cross section W1 First joint W2 Second joint

Claims (5)

A pair of left and right side members provided on the lower surface of the floor panel in the vehicle width direction and extending in the vehicle longitudinal direction;
a pair of left and right side sills provided on the outside of the side member in the vehicle width direction and extending in the vehicle longitudinal direction;
a cross member on the floor provided on the upper surface of the floor panel, extending in the vehicle width direction and connecting the pair of left and right side sills;
A shock absorbing member is provided inside the side sill,
In a vehicle side structure in which the vehicle outer side end portion of the floor panel has a side sill side joint portion that is joined to the side sill,
The side member and the side sill are arranged adjacent to each other in the vehicle width direction,
An under-floor cross member that extends in the vehicle width direction and connects the pair of left and right side members is provided below the pair of left and right side members,
The floor panel has an inclined surface that slopes downward from the inside of the vehicle to the outside of the vehicle in the vehicle width direction, and an in-vehicle member is mounted below the inclined surface;
A vehicle outer side end portion of a floor reinforcing member having a side member side joint portion joined to the side member is joined to the inclined surface of the floor panel, and a vehicle inner side end portion of the floor reinforcing member is connected to the inclined surface. A vehicle side structure, characterized in that the vehicle side structure is joined to the floor panel at a position further inside the vehicle . The side member has an inner wall and an outer wall, and a reinforcement joined to the inner wall and the outer wall is provided inside the side member,
The vehicle side structure according to claim 1, wherein the under-floor cross member is fixed to the side member by a fixing member joined to the reinforcement. An upper closed section section configured by being combined with the floor panel is provided above the reinforcement, and the upper closed section section is arranged at a position overlapping the shock absorbing member when viewed from the side of the vehicle. The vehicle side structure according to claim 2, characterized in that: The side member has a first joint part joined to the side sill, and the first joint part is arranged at a position overlapping with an upper part of the shock absorbing member inside the vehicle when viewed from the side of the vehicle;
The cross member on the floor includes a sloped portion that extends downwardly from the inside of the vehicle to the outside of the vehicle in the vehicle width direction, and the sloped portion has a second portion joined to the side sill at an outer end in the vehicle width direction. The vehicle side structure according to claim 1, further comprising a joint, and the second joint is located on an upper surface of the side sill. The side sill is composed of a side sill inner panel on the inside of the vehicle and a side sill outer panel on the outside of the vehicle,
The shock absorbing member includes an inner member and an outer member each having a hat-shaped cross section, the openings of which are arranged to face each other, and whose upper and lower ends are joined at substantially the same position in the vehicle width direction, and which extend straight in the vehicle vertical direction and have a vertically intermediate portion. a central member whose upper and lower parts are sandwiched between the upper and lower end parts of the inner member and the outer member, and whose upper and lower parts are joined to the side sill inner panel and the side sill outer panel while being sandwiched therebetween; The vehicle side structure according to claim 1, characterized in that:

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