JP2017105263A - Vehicle side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle side part structure which can suppress collapsing of a center pillar at the time of lateral collision.SOLUTION: A vehicle side part structure S has: a side rail 12; a rocker 18 which is located on a vehicle width direction outer side of the side rail 12; a center pillar 20 fixed to the rocker 18; a seat cross member 22 which is located at a position corresponding to the center pillar 20 in a vehicle longitudinal direction of the side rail 12; a first load transmission member 24 which is provided on the side rail 12 at a position corresponding to the center pillar 20 in the vehicle longitudinal direction, and is formed in a shape projecting to a vehicle upper side and a vehicle width direction outer side, and in which the vehicle width direction outer side projecting portion faces the side rail 12 in a vehicle width direction; and a second load transmission member 26 which is located between the cross member 22 and the first load transmission member 24 in a vehicle vertical direction, and which brings a lateral collision load transmitted from the center pillar 20 via the cross member 22 into contact with the vehicle upper side projecting portion of the first load transmission member 24, and transmits the lateral collision load to the first load transmission member 24.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle side part structure.

  Patent Document 1 discloses a configuration in which a load transmission member is disposed between a rocker and a floor cross member in order to suppress deformation of the vehicle body at the time of a side collision (hereinafter referred to as “side collision” as appropriate). ing.

JP 2008-195252 A

  By the way, in the technique disclosed in Patent Document 1, it is possible to prevent the center pillar from collapsing at the time of a side collision, but from the viewpoint of reducing the influence on the vehicle interior at the time of a side collision, the center pillar from falling at the side collision. Is required to be more effectively suppressed.

  In view of the above fact, an object of the present invention is to provide a vehicle side part structure that can suppress the collapse of the center pillar at the time of a side collision.

  A vehicle side part structure according to claim 1 of the present invention is provided at a lower part of a vehicle body and extends in the vehicle front-rear direction, and is disposed on the vehicle width direction outer side of the frame member and extends in the vehicle front-rear direction. A center pillar extending in the vehicle vertical direction and having a lower end fixed to the rocker, and a cross member disposed above the frame member in the vehicle and at a position corresponding to the center pillar in the vehicle longitudinal direction and extending in the vehicle width direction The frame member is provided at a position corresponding to the center pillar in the vehicle front-rear direction, and has a shape that protrudes upward in the vehicle and outward in the vehicle width direction. A first load transmission member facing in a direction, and between the cross member and the first load transmission member in a vehicle vertical direction, The side impact load transmitted through the Rosumenba has a second load transmission member for transmitting to the first load transmission member in contact with the protruding portion to the vehicle above the first load transmission member.

  In the vehicle side part structure according to claim 1, since the portion of the first load transmission member that protrudes outward in the vehicle width direction faces the frame member in the vehicle width direction, a side collision load is input during a side collision. The rocker abuts against the portion of the first load transmission member protruding outward in the vehicle width direction, and the side collision load input to the rocker is transmitted to the frame member via the first load transmission member.

  In the vehicle side structure, when a side collision load is input to the center pillar during a side collision, the second load transmission member comes into contact with the portion of the first load transmission member protruding upward from the center pillar, The side collision load transmitted through the cross member is transmitted to the first load transmission member through the second load transmission member. As a result, the center pillar is prevented from falling inward in the vehicle width direction due to a side collision load during a side collision.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle side part structure which can suppress the fall of the center pillar at the time of a side collision can be provided.

It is the perspective sectional view which looked at the section which cut the vehicle provided with the vehicle side part structure of one embodiment of the present invention along the vehicle width direction from the slanting upper part. It is an expanded sectional view showing the state where the principal part of the vehicle side part structure of one embodiment of the present invention was cut along the vehicle width direction.

Hereinafter, an embodiment of a vehicle side part structure according to the present invention will be described.
In the drawings, the front side of the vehicle 10 to which the vehicle side part structure S of the present embodiment is applied (hereinafter referred to as “vehicle front” as appropriate) is indicated by an arrow FR, and the vehicle width direction outside (hereinafter referred to as appropriate). “Outside in the vehicle width direction” is indicated by an arrow OUT, and the upper part of the vehicle (hereinafter referred to as “vehicle upper part” as appropriate) is indicated by an arrow UP.

  As shown in FIGS. 1 and 2, the vehicle body of the vehicle 10 includes a pair of left and right side rails 12, and a plurality of cross members (not shown) installed at predetermined positions in the vehicle front-rear direction of the side rails 12. The body 16 is mounted on a plurality of locations of the chassis frame 14 via a body mount (not shown). And the vehicle side part structure S of this embodiment is the said side rail 12, the rocker 18, the center pillar 20, the seat cross member 22, the 1st load transmission member 24 provided in the side rail 12, and a seat. And a second load transmission member 26 provided on the cross member 22.

  The pair of left and right side rails 12 are provided at the lower part of the vehicle body and extend in the vehicle front-rear direction. The cross section along the vehicle width direction of the side rail 12 is a substantially rectangular closed cross section. In addition, the side rail 12 of this embodiment is an example of the frame member in this invention.

  The rockers 18 are respectively arranged on the outer sides in the vehicle width direction of the pair of left and right side rails 12 and extend in the vehicle longitudinal direction. The rocker 18 is located on the inner side in the vehicle width direction and protrudes toward the inner side in the vehicle width direction, and has a substantially hat-shaped rocker inner panel 28, and is positioned on the outer side in the vehicle width direction and protrudes toward the outer side in the vehicle width direction. A hat-shaped rocker outer panel 30 is joined to each flange portion, and a cross section along the vehicle width direction is a closed cross section. Further, the edge of the floor panel 36 in the vehicle width direction is joined to the upper portion of the rocker 18, specifically, the upper portion of the rocker inner panel 28.

  The center pillar 20 extends in the vehicle vertical direction, and a lower end portion 20 </ b> A is fixed to the rocker 18. The center pillar 20 includes a pillar inner panel 32 positioned on the inner side in the vehicle width direction and a pillar outer panel 34 positioned on the outer side in the vehicle width direction. The lower end 34A of the pillar outer panel 34 is joined to the side surface of the rocker outer panel 30 on the outer side in the vehicle width direction.

  The seat cross member 22 is joined to the upper surface 36A of the floor panel 36 disposed above the side rail 12 in the vehicle, and is disposed at a position corresponding to the center pillar 20 in the vehicle front-rear direction. Further, the seat cross member 22 extends in the vehicle width direction, and has a substantially hat shape in which a cross section along the vehicle front-rear direction protrudes upward in the vehicle. A vehicle seat (not shown) is attached to the upper portion of the seat cross member 22. The seat cross member 22 of the present embodiment is an example of a cross member in the present invention.

  Further, a bulk 38 (load transmission member) is joined to an end 22A of the seat cross member 22 on the outer side in the vehicle width direction. The bulk 38 extends in the vehicle width direction to the vicinity of the pillar inner panel 32, and has a substantially hat shape in which a cross section along the vehicle front-rear direction protrudes upward of the vehicle. The bulk 38 is bonded to the upper surface 36 </ b> A of the floor panel 36.

  The first load transmitting member 24 is provided on the side rail 12 at a position corresponding to the center pillar 20 in the vehicle front-rear direction, and has a shape protruding from the side rail 12 to the vehicle upper side and the vehicle width direction outer side. Specifically, the first load transmitting member 24 is formed by bending a plate material, and includes an inclined portion 24A extending from the upper surface 12A of the side rail 12 toward the vehicle upper side and the vehicle width direction outer side, and the upper end of the inclined portion 24A. A flat portion 24B extending outward in the vehicle width direction, an inclined portion 24C extending from the side surface 12B on the outer side in the vehicle width direction of the side rail 12 toward the vehicle upper side and the vehicle width direction outer side, and an upper end of the inclined portion 24C in the vehicle vertical direction. The flat portion 24D extends, and the inclined portion 24E extends from the outer end in the vehicle width direction of the flat portion 24B toward the upper end of the flat portion 24D. The first load transmitting member 24 has a lower end of the inclined portion 24A joined to the upper surface 12A of the side rail 12, and a lower end of the inclined portion 24C joined to the side surface 12B of the side rail 12, along the vehicle width direction. A closed cross section is formed between the side rails 12 when viewed in cross section. Further, the first load transmission member 24 is closed at the front end portion and the rear end portion in the vehicle front-rear direction by a closing plate 24F.

  A portion 40 of the first load transmitting member 24 that protrudes outward in the vehicle width direction (hereinafter referred to as “outside protrusion” as appropriate) 40 faces the side rail 12 in the vehicle width direction, and collides at the time of a side collision. The rocker 18 to which a load (hereinafter referred to as “side collision load” as appropriate) is input can be brought into contact. Specifically, the rocker inner panel 28 of the rocker 18 that has been deformed inward in the vehicle width direction due to the input of the side collision load is brought into contact with the flat portion 24 </ b> D constituting the outer protruding portion 40. In addition, the outer side protrusion part 40 of this embodiment is comprised by a part (parts other than the other part mentioned later) of the inclination part 24C, the flat part 24D, and the inclination part 24E.

  As shown in FIG. 2, the second load transmission member 26 is disposed between the seat cross member 22 and the first load transmission member 24 in the vehicle vertical direction. Specifically, the second load transmission member 26 is joined to the lower surface 36B of the floor panel 36, and is disposed to face the first load transmission member 24 in the vehicle vertical direction. The second load transmitting member 26 is formed by bending a plate material, and a part of the lower surface 26A that protrudes upward of the vehicle of the first load transmitting member 24 (hereinafter referred to as “upper protruding portion” as appropriate). ) 42 having a shape corresponding to 42. In addition, the upper side protrusion part 42 of this embodiment is comprised by the inclination part 24A, the flat part 24B, and the other part (vehicle upper part rather than the upper surface 12A of the side rail 12) of the inclination part 24E.

  The concave portion 44 has a shape corresponding to the flat portion 24B of which the bottom portion 44A constitutes the upper protruding portion 42, a concave wall portion 44B on the inner side in the vehicle width direction is a shape corresponding to the inclined portion 24A, and a concave portion on the outer side in the vehicle width direction. The wall portion 44C has a shape corresponding to the other portion of the inclined portion 24E.

  The second load transmission member 26 has an end 26B on the inner side in the vehicle width direction joined to the lower surface 36B of the floor panel 36, and an end 26C on the outer side in the vehicle width direction joined to the rocker inner panel 28 of the rocker 18. A closed cross section is formed between the floor panel 36 and the rocker 18 when viewed in a cross section along the vehicle width direction.

  A collision load at the time of a side collision is transmitted to the second load transmission member 26 from the center pillar 20 through the bulk 38, the seat cross member 22, and the floor panel 36. When the side collision load is transmitted, the second load transmission member 26 can come into contact with the upper protruding portion 42 of the first load transmission member 24. Specifically, when the lower end 20A side of the center pillar 20 falls inward in the vehicle width direction due to the input of a collision load at the time of a side collision, the pillar inner panel 32 comes into contact with the bulk 38, and from the bulk 38 to the seat cross member 22 and the floor A collision load is transmitted to the panel 36. The floor panel 36 to which the collision load is transmitted is deformed in the direction in which the collision load is input, and the upper protrusion 42 of the first load transmission member 24 is fitted into the recess 44 of the second load transmission member 26, so that the recess 44 The concave wall portion 44 </ b> C is configured to contact the inclined portion 24 </ b> E of the upper protruding portion 42.

  Further, the vehicle 10 is provided with a pipe 46 extending in the vehicle front-rear direction, and the pipe 46 passes through the first load transmission member 24. Specifically, the piping 46 enters the inside of the first load transmission member 24 from the openings 24G formed in the both closing plates 24F of the first load transmission member 24, and from the opening 24G formed in the other closing plate 24F. It is outside the first load transmission member 24. The opening 24G is, for example, a through hole or a notch formed in the closing plate 24F.

  A rib 48 for increasing the strength of the first load transmission member 24 is provided in the first load transmission member 24. The rib 48 extends from the corner portion 12C formed by the upper surface 12A and the side surface 12B of the side rail 12 toward the inclined portion 24E of the first load transmitting member 24, and is first against the collision load received by the inclined portion 24E. The strength of the load transmission member 24 is increased. The rib 48 extends in the vehicle front-rear direction from the one closing plate 24F toward the other closing plate 24F.

Next, the effect of this embodiment is demonstrated.
In the vehicle side part structure S, for example, when the collision body 50 collides with the vehicle 10 in a side face, the collision load is input to the rocker 18 and the center pillar 20 from the outside in the vehicle width direction to the inside in the vehicle width direction.

  The rocker 18 to which the collision load F <b> 1 is input at the time of a side collision is deformed inward in the vehicle width direction, and the rocker inner panel 28 comes into contact with the outer protrusion 40 of the first load transmission member 24. Due to this contact, the collision load F <b> 1 input to the rocker 18 is transmitted to the side rail 12 via the first load transmission member 24. For this reason, it becomes possible to reduce the cross-sectional shape of the rocker 18 along the vehicle width direction, and to reduce the thickness of the rocker inner panel 28 and the rocker outer panel 30, thereby effectively utilizing the space on the side of the vehicle and the vehicle. A weight reduction of 10 can be realized.

  Further, the center pillar 20 to which the collision load F <b> 2 is input at the time of a side collision is deformed so that the lower end portion 20 </ b> A side falls down toward the inner side in the vehicle width direction, and the pillar inner panel 32 contacts the bulk 38. Thereby, the collision load F <b> 2 is transmitted to the bulk 38. The collision load F <b> 2 transmitted to the bulk 38 is transmitted to the seat cross member 22 and the floor panel 36. The floor panel 36 to which the collision load F2 is transmitted is deformed in the direction in which the collision load F2 is input, and the upper protrusion 42 of the first load transmission member 24 is fitted in the recess 44 of the second load transmission member 26. The recessed wall portion 44 </ b> C of the recessed portion 44 contacts the inclined portion 24 </ b> E of the upper protruding portion 42. Thereby, the collision load F <b> 2 is transmitted to the first load transmission member 24 through the second load transmission member 26. Then, the collision load F <b> 2 transmitted to the first load transmission member 24 is transmitted to the side rail 12. Thereby, it is suppressed that the center pillar 20 falls down to the vehicle width direction inner side by the collision load F2 at the time of a side collision.

  As described above, in the vehicle side part structure S, the collision load F1 input to the rocker 18 and the collision load F2 input to the center pillar 20 are transmitted to the side rails 12, respectively. The collision load F3 transmitted in the vehicle width direction is reduced. As a result, the seat cross member 22 can be formed of a light material or the plate thickness can be reduced, and the weight of the vehicle 10 can be reduced.

  Further, in the vehicle side part structure S, the upper protruding portion 42 of the first load transmission member 24 is fitted into the concave portion 44 of the second load transmission member 26 at the time of a side collision, in other words, the inclined portion 24A contacts the concave wall portion 44B. The flat portion 24B contacts the bottom portion 44A, and the inclined portion 24E contacts the concave wall portion 44C. For this reason, when the side rail 12 is deformed inward in the vehicle width direction by the transmitted collision load, slip between the contact surfaces of the recess 44 and the upper protrusion 42 is suppressed. Thereby, it is suppressed that the collision load transmitted to the side rail 12 due to the deformation of the side rail 12 is reduced. As a result, the influence of the collision body 50 on the vehicle interior can be stably reduced.

  In the vehicle side part structure S, since the pipe 46 is passed through the first load transmission member 24, the pipe 46 is protected by the first load transmission member 24 even at the time of a side collision.

  Moreover, in the vehicle side part structure S, since the rib 48 is provided in the 1st load transmission member 24, the intensity | strength of the 1st load transmission member 24 improves and transmits the collision load F1 to the side rail 12 efficiently. Is possible.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

S Vehicle side structure 12 Side rail (frame member)
18 Rocker 20 Center pillar 20A Lower end 22 Seat cross member (cross member)
24 1st load transmission member 26 2nd load transmission member 40 Outer protrusion part (part protruded to the vehicle width direction outer side)
42 Upper projection (projected upward)

Claims (1)

A frame member provided in the lower part of the vehicle body and extending in the vehicle longitudinal direction;
A rocker that is disposed outside the frame member in the vehicle width direction and extends in the vehicle front-rear direction;
A center pillar extending in the vehicle vertical direction and having a lower end fixed to the rocker;
A cross member disposed above the frame member in the vehicle and at a position corresponding to the center pillar in the vehicle longitudinal direction and extending in the vehicle width direction;
The frame member is provided at a position corresponding to the center pillar in the vehicle front-rear direction, and has a shape that protrudes upward in the vehicle and outward in the vehicle width direction. An opposing first load transmitting member;
A side collision load, which is disposed between the cross member and the first load transmission member in the vehicle vertical direction and is transmitted from the center pillar via the cross member, protrudes above the vehicle of the first load transmission member. A second load transmitting member that contacts the portion and transmits to the first load transmitting member;
A vehicle side part structure.

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