JP2017124682A - Vehicle side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle side part structure capable of reducing an intrusion amount of a center pillar into a cabin at the time of side collision.SOLUTION: A vehicle side part structure includes: a center pillar outer 14 constituting an outside part in a vehicle width direction of a pair of right and left center pillars which are arranged the substantially center in a vehicle longitudinal direction, being extended along a substantially vehicle vertical direction; and a roof side rail outer 26 which contains a first connection part 28 that is extended along a substantially vehicle longitudinal direction and is connected to a portion on a vehicle front side and a vehicle upper side of the center pillar outer 14, a second connection part 30 connected to a portion on a vehicle rear side and a vehicle upper side of the center pillar outer 14, and a bead 32 which is arranged between the first connection part 28 and the second connection part 30, being protruded to the outside in a vehicle width direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle side part structure.

  Patent Document 1 below discloses a pillar reinforcing structure. The pillar reinforcing structure is a structure in which a reinforcing member is provided inside the center pillar. The reinforcing member divides the space inside the center pillar into a plurality of spaces, and is arranged so that the cross-sectional shape orthogonal to the vehicle vertical direction of each space is substantially triangular. Therefore, when a collision load is input to the center pillar during a vehicle side collision (hereinafter referred to as “side collision”), the collision load is distributed by transmitting the reinforcing member to the center pillar. Is prevented from being bent.

JP-A-9-226622

  By the way, generally, the vehicle upper side of the center pillar is coupled to the roof side rail. Specifically, the center pillar constitutes a part of the roof side rail by a first coupling portion disposed on the vehicle front side of the center pillar outer and a second coupling portion disposed on the vehicle rear side of the center pillar outer. Is coupled to the roof side rail outer. Therefore, when a collision load is input from the outside in the vehicle width direction to the center pillar at the time of a side collision, the center pillar and the roof side rail coupled to the center pillar are also displaced inward in the vehicle width direction. For this reason, when the load is applied to the first coupling portion and the second coupling portion that couple the center pillar and the roof side rail, the first coupling portion and the second coupling portion are broken, and the roof side rail is supported. There is a possibility that the center pillar that has disappeared will greatly enter the passenger compartment. Therefore, the above prior art has room for improvement in this respect.

  In view of the above problems, an object of the present invention is to provide a vehicle side part structure that can reduce the amount of intrusion of a center pillar into a vehicle compartment at the time of a side collision.

  The vehicle side portion structure according to the first aspect of the invention constitutes the vehicle width direction outer side portion of a pair of left and right center pillars that are disposed substantially at the center in the vehicle longitudinal direction and extend substantially along the vehicle vertical direction. A center pillar outer, a first coupling portion that extends substantially along the vehicle front-rear direction and is coupled to a vehicle upper side and vehicle front side portion of the center pillar outer, and a vehicle upper portion of the center pillar outer And a bead that is disposed between the first coupling portion and the second coupling portion and protrudes outward in the vehicle width direction. And a rail outer.

  According to the first aspect of the present invention, the center pillar outer and the roof side rail outer are coupled by the first coupling portion and the second coupling portion. Therefore, when a collision load is input to the center pillar from the outside in the vehicle width direction at the time of a side collision, the roof side rail outer coupled to the center pillar outer also enters the vehicle width direction inside around the position coupled to the center pillar outer. Displace to Due to this displacement, a tension acting outward in the vehicle width direction is generated at a portion between the first coupling portion and the second coupling portion in the roof side rail outer. Generally, when this tension is applied, a load is applied to the first coupling portion and the second coupling portion of the roof side rail outer. However, in the present invention, the first coupling portion and the second coupling portion of the roof side rail outer are A bead that protrudes outward in the vehicle width direction is formed therebetween. Therefore, when a tension acts on the roof side rail outer, the bead is deformed so as to be pushed inward in the vehicle width direction. If the bead is deformed so as to be pushed inward in the vehicle width direction, the length of the roof side rail outer between the first coupling portion and the second coupling portion in the substantially vehicle longitudinal direction becomes longer. The tension acting on the outer can be absorbed. As a result, the load applied to the first coupling portion and the second coupling portion is reduced, so that the breakage of the first coupling portion and the second coupling portion is suppressed, and the center pillar outer maintains the coupled state with the roof side rail outer. Is done. For this reason, it can suppress that a center pillar penetrate | invades into a vehicle interior.

  The vehicle side part structure according to the first aspect of the present invention has an excellent effect that the amount of intrusion of the center pillar into the vehicle compartment at the time of a side collision can be reduced.

It is a side view which shows the state which looked at the principal part of the vehicle side part structure which concerns on one Embodiment from the vehicle interior side to the vehicle interior outer side. It is an expanded sectional view showing the important section of the vehicle side part structure concerning one embodiment. It is an expanded sectional view which shows the state at the time of a side collision with respect to FIG. It is a front view showing typically the state at the time of a side collision of the vehicle side part structure according to an embodiment and a comparison.

  Hereinafter, an embodiment of a vehicle side part structure according to the present invention will be described with reference to FIGS. In these figures, the arrow FR indicates the front side in the vehicle longitudinal direction, the arrow OUT indicates the vehicle width direction outside, and the arrow UP indicates the vehicle vertical direction upper side.

  FIG. 1 shows a center pillar 10 disposed substantially at the center in the vehicle front-rear direction. The center pillar 10 is manufactured by press-molding a high-strength material such as a high-tensile steel plate, for example, and is positioned at a boundary between a front door and a rear door (both not shown) in the vehicle front-rear direction. Is a skeleton member extending in the vehicle vertical direction. That is, the center pillar 10 is provided in a pair of left and right at the outer end in the vehicle width direction of a vehicle (not shown), and is provided on the vehicle lower side from a roof side rail 12 described later and substantially along the vehicle front-rear direction. 4 extends substantially along the up-down direction of the vehicle over the rocker 11 shown in FIG. The center pillar 10 includes a center pillar outer 14 disposed on the outer side in the vehicle width direction, a pillar reinforcement 16 disposed on the inner side in the vehicle width direction of the center pillar outer 14, and an inner side in the vehicle width direction of the pillar reinforcement 16. And a center pillar inner 13 (see FIG. 4) which is coupled to the center pillar outer 14.

  The center pillar outer 14 includes a pair of front and rear flange portions 18 extending substantially along the vehicle front-rear direction, and a front-rear direction extending from one end 20 of the flange portion 18 in the vehicle front-rear direction outward in the vehicle width direction. The pair of extending wall portions 22 and the outer wall portion 24 connecting the end portions 23 of the pair of front and rear extending wall portions 22 on the outer side in the vehicle width direction are substantially cross-sectional shapes orthogonal to the vehicle vertical direction. It is formed in a hat shape (see FIG. 2). The center pillar outer 14 and the center pillar inner whose cross-sectional shape orthogonal to the vehicle vertical direction is substantially hat-shaped are coupled to face each other, so that the center pillar 10 has a closed cross section. .

  A roof side rail 12 is provided on the vehicle upper side of the center pillar 10. The roof side rail 12 is a skeletal member that is manufactured by press-molding a high-strength material such as a high-tensile steel plate, is located outside in the vehicle width direction, and extends substantially in the vehicle front-rear direction at the vehicle side portion. And the roof side rail outer 26 arrange | positioned at the vehicle width direction outer side, and the roof side rail inner 15 arrange | positioned inside the vehicle width direction of this roof side rail outer 26 and couple | bonded with the roof side rail outer 26 (refer FIG. 4). ). The roof side rail 12 is coupled to a vehicle width direction end portion of a roof panel (not shown) provided at the top of the vehicle.

  As shown in FIG. 2, a roof side rail outer 26 is coupled to the flange portion 18 of the center pillar outer 14. Specifically, a first coupling portion 28 that joins the flange 18 on the vehicle front side of the center pillar outer 14 and the roof side rail outer 26 by welding, and a flange 18 on the vehicle rear side of the center pillar outer 14. And the roof side rail outer 26 are coupled by a second coupling portion 30 that couples the roof side rail outer 26 by welding.

  A bead 32 is formed between the first coupling portion 28 and the second coupling portion 30 in the roof side rail outer 26. The bead 32 has a shape protruding outward in the vehicle width direction. Specifically, a pair of front and rear bead extending wall portions 36 that extend outward from the flange portion 27 of the roof side rail outer 26 in the vehicle width direction, and the end of each bead extending wall portion 36 on the outer side in the vehicle width direction. It is comprised with the bead outer side wall part 40 which connects parts 38 in the vehicle front-back direction. Further, the bead 32 is disposed corresponding to the position of the center pillar outer 14 protruding outward in the vehicle width direction. That is, the roof side rail outer 26 is disposed at a position corresponding to the center pillar 10. The bead 32 is disposed on a virtual line (not shown) that connects the first coupling portion 28 and the second coupling portion 30 in a straight line. Specifically, the first coupling portion 28 and the second coupling portion 30 are provided on the flange 27 on the vehicle lower side of the roof side rail outer 26 so as to be separated from each other in the vehicle front-rear direction. A bead 32 is formed in the flange portion 27 between the two coupling portions 30.

  Next, the operation and effect of this embodiment will be described.

  Here, the operation and effect of this embodiment will be described using the proportionality shown in FIG. It should be noted that the same components as those of the comparative embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4, the vehicle upper side of the center pillar 10 is coupled to the roof side rail outer 100, which is coupled to the first coupling portion 28 disposed on the vehicle front side of the center pillar 10. These are coupled by a second coupling portion 30 disposed on the vehicle rear side of the center pillar 10 (see FIG. 1). Therefore, when a collision load is input from the outer side in the vehicle width direction to the center pillar 10 during a side collision when the collision body 102 collides with the side surface of the vehicle, the center pillar 10 is displaced inward in the vehicle width direction. The roof side rail outer 100 coupled to the pillar 10 is also displaced inward in the vehicle width direction. Due to the displacement of the roof side rail outer 100, a load is applied to the first coupling portion 28 and the second coupling portion 30 that couple the center pillar 10 and the roof side rail outer 100. The first coupling portion 28 and the second coupling portion 30 are broken by this load, and the coupled state with the roof side rail outer 100 is released. The center pillar outer 14 and the center pillar 10 are thus shown by a thin two-dot chain line A in the figure. As shown in FIG. 8, there is a possibility that the vehicle 104 may greatly enter.

  On the other hand, in the present embodiment, as shown in FIG. 2, the center pillar outer 14 and the roof side rail outer 26 are coupled by the first coupling portion 28 and the second coupling portion 30. Therefore, as shown in FIG. 3, when a collision load is input to the center pillar 10 from the outside in the vehicle width direction at the time of a side collision, the roof side rail outer 26 coupled to the center pillar outer 14 is also connected to the center pillar outer 14. It is displaced inward in the vehicle width direction centering on the position where it is coupled. Due to this displacement, a tension acting outward in the vehicle width direction is generated at a portion of the roof side rail outer 26 between the first coupling portion 28 and the second coupling portion 30. Generally, when this tension is applied, a load is applied to the first coupling portion 28 and the second coupling portion 30 in the roof side rail outer 26, but in the present embodiment, the first coupling portion 28 of the roof side rail outer 26 and A bead 32 protruding outward in the vehicle width direction is formed between the second coupling portion 30 and the second coupling portion 30. Therefore, when tension is applied to the roof side rail outer 26, the bead 32 is deformed so as to be pushed inward in the vehicle width direction. If the bead 32 is deformed so as to be pushed inward in the vehicle width direction, the length of the roof side rail outer 26 between the first coupling portion 28 and the second coupling portion 30 in the substantially vehicle longitudinal direction becomes longer. Thus, the tension acting on the roof side rail outer 26 can be absorbed. As a result, the load applied to the first coupling portion 28 and the second coupling portion 30 is reduced, so that the breakage of the first coupling portion 28 and the second coupling portion 30 is suppressed, so that the center pillar outer 14 is connected to the roof side rail outer 26. And the combined state is maintained. For this reason, it is possible to suppress the center pillar 10 from entering the vehicle interior while making maximum use of the material strength of the center pillar outer 14 and the roof side rail outer 26 (see the thick two-dot chain line B in FIG. 4). ). Thereby, the penetration | invasion amount to the vehicle interior of the center pillar 10 at the time of a side collision can be reduced.

  Further, the bead 32 is disposed on a virtual line (not shown) that connects the first coupling portion 28 and the second coupling portion 30 in a straight line. Therefore, compared to the case where the beads 32 are arranged at positions other than the imaginary line, the length of the roof side rail outer 26 between the first coupling portion 28 and the second coupling portion 30 in the substantially vehicle longitudinal direction is changed. The amount increases. Therefore, the tension acting on the roof side rail outer 26 at the time of a side collision can be further absorbed. Thereby, the fracture | rupture of the 1st coupling | bond part 28 and the 2nd coupling | bond part 30 is suppressed further, and the penetration | invasion amount to the vehicle interior of the center pillar 10 at the time of a side collision can be reduced more.

  Furthermore, the center pillar 10 and the roof side rail 12 are configured by press-molding a high-strength material such as a high-tensile steel plate. Generally, a high-strength material has low toughness. Therefore, when a collision load is input during a side collision, a load is applied by the first coupling portion 28 and the second coupling portion 30, and the first coupling portion and the second coupling portion are separated. There is a possibility of breaking. However, in this embodiment, since the bead 32 is formed on the roof side rail outer 26, even when the roof side rail 12 and the center pillar 10 are made of a high-strength material, the first in the case of a side collision. It is possible to suppress the breakage of the first coupling portion and the second coupling portion with a simple configuration.

  In the above-described embodiment, the bead 32 is provided at a position corresponding to the center pillar 10 in the roof side rail outer 26, and this position is desirable, but the present invention is not limited to this, and the center pillar outer in the roof side rail outer 26. It may be arranged at other positions such as 14 above the vehicle.

  Moreover, although the roof side rail 12 and the center pillar 10 are comprised by press-molding high strength materials, such as a high-tensile steel plate, it is not restricted to this and may be comprised by other materials.

  Furthermore, as a reference example, the bead 32 is provided on the roof side rail outer 26, but may be provided at a position coupled to the center pillar 10 in the rocker. Thereby, since the load applied to the coupling portion between the center pillar 10 and the rocker at the time of a side collision is reduced, the coupled state between the center pillar 10 and the rocker is maintained. Furthermore, a bead 32 may be provided at a position where the roof side rail outer 26 is coupled to a front pillar (not shown). Similarly, a bead 32 may be provided at a position where the roof side rail outer 26 is coupled to a rear pillar, a quarter pillar, or the like (not shown).

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

10 Center pillar 14 Center pillar outer 26 Roof side rail outer 28 First coupling portion 30 Second coupling portion 32 Bead

Claims (1)

A center pillar outer that constitutes a vehicle width direction outer side portion of a pair of left and right center pillars that is disposed substantially in the center in the vehicle longitudinal direction and extends substantially along the vehicle vertical direction;
A first coupling portion extending substantially along the vehicle front-rear direction and coupled to a vehicle upper side and vehicle front side portion of the center pillar outer; a vehicle upper side and vehicle rear side of the center pillar outer; A roof side rail outer comprising: a second coupling portion coupled to the portion; and a bead disposed between the first coupling portion and the second coupling portion and projecting outward in the vehicle width direction;
A vehicle side part structure.

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