JP6698393B2 - Body side structure - Google Patents

Description

  The present invention relates to a vehicle body side (end portion in the vehicle width direction) structure and a vehicle, and is particularly suitable for improving strength against a load (hereinafter also referred to as lateral load) input from the outside in the vehicle width direction and coupling strength. Is.

  A side load may be input to the vehicle, and in that case, the strength of the lower portion of the B pillar in the vehicle body side structure is important. As a lower structure of such a vehicle B pillar, for example, there is one described in Patent Document 1 below. In the B-pillar lower structure described in Patent Document 1, a bead extending in the vehicle up-down direction is formed at the lower end of the B-pillar, and the strength of the B-pillar lower portion against lateral load, particularly the coupling between the B-pillar and the side sill. Has improved strength.

JP, 2013-163501, A

  However, in the B-pillar lower structure described in Patent Document 1 described above, although the coupling strength between the B-pillar lower portion and the side sill against the lateral load deviated in the vehicle front-rear direction can be improved, the lateral load is, for example, It is often input from the front side door or the rear side door, and there is room for improvement in the strength of the lower portion of the B pillar and the joint strength with respect to these side load input points.

  The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle body side portion structure capable of improving the strength and the joint strength of a B pillar lower portion with respect to a lateral load input point. ..

In the invention according to claim 1, which achieves the above object, a lower end portion of a B pillar is connected to a side sill extending in a vehicle front-rear direction, and a lateral load input member is arranged outside the B pillar in a vehicle width direction. In the vehicle body side structure, a bead whose extension direction intersects the vehicle front-rear direction is provided at a lower portion of the B pillar in the vehicle vertical direction, and the side load input member is disposed at a position overlapping the bead in a vehicle side view. The bead is formed in a ridge shape that is obliquely downward from the front of the vehicle toward the rear of the vehicle .

  According to this configuration, it is possible to improve the strength of the B pillar itself with respect to the lateral load input from the lateral load input member, and it is possible to disperse the lateral load on the side sill, and to the lateral load input point. It is possible to improve the strength of the lower portion of the B pillar.

  According to a second aspect of the invention, in the vehicle body side structure according to the first aspect, the extending direction of the bead has a vehicle front-rear direction component.

  According to this configuration, the lateral load input from the lateral load input member can be efficiently dispersed in the side sill.

  According to a third aspect of the present invention, in the vehicle body side structure according to the first or second aspect, a lower end portion of the bead is a connecting portion between a vehicle width direction outer end portion of the side sill and a lower end portion of the B pillar. Is located above the vehicle in the vertical direction.

  With this configuration, it is possible to reduce the lateral load load transmitted from the lateral load input member to the welding point (spotting point) of the B pillar and the side sill through the bead.

  The invention according to claim 4 is the vehicle body side structure according to any one of claims 1 to 3, wherein the lateral load input member is at least one of a door beam of a front side door and a door hinge of a rear side door. It is characterized by

  According to this configuration, by setting the door beam of the front side door and the door hinge of the rear side door as the lateral load input member, it is possible to reliably improve the strength of the entire B pillar with respect to the lateral load input point.

  The invention according to claim 5 is the vehicle body side structure according to any one of claims 1 to 3, wherein the lateral load input member is both a door beam of a front side door and a door hinge of a rear side door, Forming two or more of the beads apart from each other in the vehicle front-rear direction, and arranging the door beam of the front side door so that the bead of the two or more beads in front of the vehicle front-rear direction overlaps the front bead in a vehicle side view. The door hinge of the rear side door is arranged so as to be overlapped with a rear bead that is behind the front bead in the vehicle front-rear direction in a vehicle side view.

  According to this configuration, it is possible to disperse the lateral load from the door beam of the front side door and the door hinge of the rear side door via the front bead and the rear bead, respectively. And it becomes possible to further improve the bond strength.

  According to a sixth aspect of the present invention, in the vehicle body side structure according to the fifth aspect, the arrangement position of the door beam of the front side door with respect to the front bead and the arrangement position of the door hinge of the rear side door with respect to the rear bead are provided. It is characterized by shifting in the vertical direction of the vehicle.

  According to this configuration, if the arrangement positions of the two are the same in the vertical direction of the vehicle, the lateral load is concentrated at the same height position of the B pillar, but the arrangement positions of the both are shifted in the vertical direction of the vehicle. Thus, it is possible to avoid the concentration of the lateral load at the same height position of the B pillar, and further improve the strength of the lower portion of the B pillar with respect to the lateral load input point.

  According to a seventh aspect of the present invention, in the vehicle body side structure according to the fifth or sixth aspect, the lower end portion of the front bead in the vehicle vertical direction is located at a substantially central portion of the B pillar in the vehicle longitudinal direction. To do.

  According to this configuration, when the lateral load is input to the B pillar, the lateral load is easily transmitted to the side sill striking points along the vehicle front-rear direction front ridge line and the rear ridge line of the B pillar, through the front bead. The lateral load can be transmitted to the center of the B-pillar in the vehicle front-rear direction, so local concentration of the side load on the bottom of the B-pillar can be avoided and the B-pillar to the side-load input point can be avoided. It is possible to further improve the bonding strength of the lower part.

  According to the present invention, there is provided a vehicle body side portion structure in which a lower end portion of a B pillar is connected to a side sill extending in a vehicle front-rear direction, and a lateral load input member is arranged outside the vehicle width direction of the B pillar. A bead whose extending direction intersects the vehicle front-rear direction is provided in the lower portion of the B pillar in the vehicle vertical direction, and the lateral load input member is arranged so as to overlap the bead in a side view of the vehicle. Therefore, the strength of the B pillar itself against the lateral load input from the lateral load input member can be improved and the lateral load can be dispersed in the side sill, and the B pillar lower portion with respect to the lateral load input point can be It is possible to improve strength and bond strength. This makes it possible to improve the occupant protection performance against a side collision.

1 is a schematic side view showing an embodiment of a vehicle to which a vehicle body side structure of the present invention is applied. FIG. 2 is a perspective view of a vehicle body side part structure 10 of the vehicle of FIG. 1. It is an expansion perspective view of the a section of FIG. It is a side view of the vehicle body side part structure 10 of FIG. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is explanatory drawing of the effect|action of the vehicle body side part structure 10 of FIG. It is explanatory drawing of the effect|action of the conventional vehicle body side part structure.

  The following embodiments exemplify devices and methods for embodying the present invention. However, the technical idea of the present invention does not specify the material, shape, arrangement, etc. of the constituent parts below. The technical idea of the present invention can be variously modified within the technical scope of the claims.

  An embodiment of a vehicle body side structure and a vehicle of the present invention will be described in detail below with reference to FIGS. 1 to 8. FIG. 1 is a schematic side view showing an example of a vehicle to which a vehicle body side portion structure 10 of this embodiment is applied, FIG. 2 is a perspective view of the vehicle body side portion structure 10 of FIG. 1, and FIG. 4 is an enlarged perspective view of FIG. 4, a side view of the vehicle body side structure 10 of FIG. 3, FIG. 5 is a sectional view taken along line VV of FIG. 4, FIG. 6 is a sectional view taken along line VI-VI of FIG. 4, and FIG. 3 is an explanatory view of the operation of the vehicle body side structure 10, and FIG. 8 is an explanatory view of the operation of the conventional vehicle body side structure 10.

  In addition, a small x in FIG. 4 indicates a hitting point (welding point), of which the hitting point S is a hitting point between the B pillar 15 and the side sill 11 (hereinafter, hitting point with the side sill), and a hitting point P (indicated by a broken line in FIG. 4). The small X shown) indicates the hitting flange portion hit point on the B pillar 15 itself. The door-stop flange portion is a flange-shaped portion of a portion where the front side door 3 or the rear side door 4 faces.

  In the vehicle 1 of this embodiment, as shown in FIG. 1, a passenger compartment is formed in the rear of the front engine room. It is a wagon type vehicle having a long passenger compartment 2.

  In this vehicle 1, a front side door 3 is provided on the outside of the vehicle interior 2 in the vehicle width direction in the front of the vehicle so as to be openable and closable, and a rear side door 4 is provided at the rear of the vehicle so as to be openable and closable. As is well known, the front side door 3 is attached to the vehicle body via a front door hinge 5 provided on an A pillar 32, which will be described later, so as to be openable and closable, and the rear side door 4 is a rear door hinge provided on a B pillar 15, which will be described later. It is attached to the vehicle body via 6 through which it can be freely opened and closed. The same applies to the rear side door 4, but the front side door 3 is internally provided with a front door beam 7 as a strength member of the front side door 3, as indicated by a broken line in FIG.

  In the lower structure of the vehicle body side portion forming the vehicle width direction both ends of the vehicle compartment 2, as shown in FIG. 2, the side sill 11 extending in the vehicle front-rear direction has the vehicle width direction both end portions below the vehicle compartment (hereinafter, simply (Also referred to as left and right). Each side sill 11 is formed by a side sill outer 12 and a side sill inner 13 which are opposed to each other, to have a hollow closed cross-sectional shape extending in the vehicle front-rear direction. Further, the vehicle rear end portions of the left and right side sills 11 are connected to each other by a cross member 14 having a closed cross-sectional shape extending in the vehicle width direction.

  On the other hand, left and right side rails 22 extend in the vehicle front-rear direction along the lower surface of the roof panel 21 (see FIG. 1) at both ends in the vehicle width direction above the vehicle in the vehicle compartment 2. Each side rail 22 is formed in a hollow closed cross-sectional shape extending in the vehicle front-rear direction by a side rail outer 23 and a side rail inner 24 that face each other. Further, between the vehicle front ends of the side sill 11 and the side rails 22, the A pillars 32 extend in the vehicle vertical direction along the vehicle front edges of the front side door openings located at both vehicle width direction ends. Each A pillar 32 is formed in a hollow closed cross-sectional shape by an A pillar outer 33 and an A pillar inner 34 that face each other.

  Further, between the front side door opening and the rear side door opening located at both ends in the vehicle width direction, the B pillar 15 having the vehicle lower end coupled to the side sill 11 and the vehicle upper end coupled to the side rail 22. Extends in the vertical direction of the vehicle. Each B pillar 15 is formed in a hollow closed cross-sectional shape by a B pillar outer 16 and a B pillar inner 17 that face each other. Further, in each B pillar 15, a reinforcement B pillar (not shown) is provided so as to extend between the B pillar outer 16 and the B pillar inner 17 to stiffen the B pillar 15. The vehicle lower end of the reinforcement B pillar is connected to the side sill inner 13 to secure the connection rigidity between the B pillar 15 and the side sill 11.

  Further, between the side sill 11 and the side rail 22, C pillars 39 extend in the vehicle vertical direction along the vehicle rear edge of the rear side door openings at both ends in the vehicle width direction.

  In the present embodiment, as shown in FIGS. 3 and 4, two beads 8 and 9 whose extension direction intersects the vehicle front-rear direction are formed in the lower portion of the B pillar 15 so as to be separated in the vehicle front-rear direction. There is. Further, each of these beads 8 and 9 has a vehicle front-rear direction component as an extending direction component. Specifically, each of the two beads 8 and 9 of this embodiment is formed obliquely downward and downward from the vehicle front side to the vehicle rear side. These beads 8 and 9 are formed at the same time when the B pillar outer 16 forming the B pillar 15 is press-formed with a steel plate. The bead has various meanings, but here, a ridge-like bulging portion formed in series is shown. Generally, when a bead is formed by press working of a steel sheet, it is said that work hardening occurs due to residual stress accompanying the working, and mechanical strength is improved.

  Of these two beads 8, 9, if the bead in front of the vehicle is the front bead 8 and the bead at the rear of the vehicle is the rear bead 9, as shown in FIG. The front door beam 7 of the front side door 3 is positioned so as to overlap the area, and the rear door hinge 6 of the rear side door 4 is fixed to the convex surface of the rear bead 9. That is, the door hinge 6 of the rear side door 4 is positioned so as to overlap with the rear bead 9 when the vehicle is viewed from the side. Of course, regarding the arrangement of the front door beam 7 of the front side door 3, it is premised that the front side door 3 is closed.

  Further, as shown in FIG. 4, the lower end portion of the two beads 8 and 9 in the vehicle vertical direction is a connecting portion between the vehicle width direction outer end portion of the side sill 11 and the lower end portion of the B pillar 15 (B pillar outer 16). (That is, the hitting point S between the convex surface of the side sill outer 12 having a hat-shaped cross section and the lower end of the B pillar outer 16) is located above the vehicle. Further, as shown in the figure, the lower end portion of the front bead 8 is located in the vehicle longitudinal direction central portion in the vicinity of the lower end portion of the B pillar 15 (B pillar outer 16).

  Moreover, as shown in FIGS. 4 and 6, the arrangement position of the front door beam 7 of the front side door 3 with respect to the front bead 8 and the arrangement position of the rear door hinge 6 of the rear side door 4 with respect to the rear bead 9 are displaced in the vehicle vertical direction. There is. Specifically, the position of the front door beam 7 of the front side door 3 with respect to the front bead 8 is slightly lower than the fixed position of the rear door hinge 6 of the rear side door 4 with respect to the rear bead 9.

  As described above, the front door beam 7 is a strength member for the front side door 3. Therefore, when the front side door 3 comes into contact with the B pillar 15 due to a lateral load, the front door beam 7 receives the lateral load input member. Becomes Further, the rear door hinge 6 is an input point of a lateral load to the B pillar 15, that is, a lateral load input member. Therefore, as shown in FIG. 7, the lateral load from the front door beam 7 is input to the front bead 8 and the lateral load from the rear door hinge 6 is input to the rear bead 9. Since these beads 8 and 9 both extend in the direction intersecting with the vehicle front-rear direction, the input lateral load is applied to the vehicle lower side along each bead 8 and 9, that is, in the extending direction of the side sill 11. Transmitted. At this time, since the two beads 8 and 9 have a vehicle front-rear direction component as an extending direction component, the lateral load transmitted to each bead 8 and 9 is easily transmitted to the side sill 11. In this way, the lateral load from the lateral load input point is not locally received by the B pillar 15 but is transmitted/distributed to the side sill 11 via the beads 8 and 9, so that the lateral load input point is It is possible to improve the strength of the lower portion of the B pillar.

  Here, the fact that the lateral load from the front door beam 7 is input to the front bead 8 and the lateral load from the rear door hinge 6 is input to the rear bead 9 also helps to distribute the lateral load. It is possible to improve the strength of the lower portion of the B pillar with respect to the one-sided load input point. Further, it is also possible to shift the position of the front door beam 7 of the front side door 3 with respect to the front bead 8 and the position of the rear door hinge 6 of the rear side door 4 with respect to the rear bead 9 in the vehicle vertical direction in order to distribute the lateral load. Connect Further, since the lower end of the front bead 8 is located at the center of the B pillar 15 in the vehicle front-rear direction, the lateral load input from the front door beam 7 is transferred from the center of the B pillar 15 in the vehicle front-rear direction to the vehicle front-rear direction. Since it is transmitted to the side sill 11, the lateral load can be efficiently distributed to the side sill 11 accordingly. Moreover, since the vehicle vertical direction lower ends of the two beads 8 and 9 are located above the vehicle from the connecting portion between the vehicle width direction outer side end of the side sill 11 and the lower end of the B pillar 15 (B pillar outer 16), It is possible to reduce the lateral load load transmitted from each bead 8, 9 to the hit point S with the side sill.

  FIG. 8: is explanatory drawing of the effect|action of the conventional vehicle body side part structure. In the conventional vehicle body side structure, there is no bead in the lower portion of the B pillar 101, and the front door beam 102 and the rear door hinge 103 are arranged at substantially the same height in the vehicle vertical direction. In such a structure, the lateral load input from the front door beam 102 and the rear door hinge 103, which are lateral load input members, is easily transmitted to the hitting flange portion striking point P, and accordingly, the B pillar for the lateral load input point. The strength of the lower part of 101 may be insufficient.

  In addition, as shown in FIGS. The H may be arranged inside the bead 8. Gauge hole G. H is a positioning hole necessary for manufacturing, for example, and this gauge hole G.H. By arranging H inside the bead 8, it is possible to avoid a decrease in strength. Further, in this embodiment, the two beads 8 and 9 are both formed obliquely downward and downward from the vehicle front side to the vehicle rear side. For example, as shown by a broken line in FIG. 7, the front bead 8 is formed from the vehicle rear side to the vehicle front side. It may be formed obliquely downward and downward. Further, in this embodiment, the two beads 8 and 9 are formed in the vehicle front-rear direction, but three or more beads may be formed. Further, the number of beads may be one.

  It goes without saying that the present invention includes various embodiments and the like not described above. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention described in the scope of claims appropriate from the above description.

1 Vehicle 6 Rear door hinge (side load input member)
7 Front door beam (side load input member)
8 front bead (bead)
9 Rear bead (bead)
10 Body side structure 11 Side sill 12 Side sill outer (side sill)
13 Side sill inner (side sill)
15 B Pillar 16 B Pillar Outer (B Pillar)
17 B Pillar Inner (B Pillar)

Claims (7)

In a vehicle body side portion structure in which a lower end portion of a B pillar is connected to a side sill extending in the vehicle front-rear direction, and a lateral load input member is arranged outside the vehicle width direction of the B pillar,
A bead whose extending direction intersects the vehicle front-rear direction is provided at the lower portion of the B-pillar in the vehicle vertical direction,
The arrangement of the side load input member is made to be a position overlapping the bead in a side view of the vehicle ,
The vehicle side part structure , wherein the bead is formed in a ridge shape that is obliquely downward from the front of the vehicle toward the rear of the vehicle.   The vehicle body side structure according to claim 1, wherein the extending direction of the bead has a vehicle front-rear direction component.   The vehicle body according to claim 1 or 2, wherein a lower end portion of the bead is located above a vehicle width direction outer end portion of the side sill and a lower end portion of the B pillar in a vehicle up-down direction. Side structure.   4. The vehicle body side part structure according to claim 1, wherein the side load input member is at least one of a door beam of a front side door and a door hinge of a rear side door. The lateral load input member is both a door beam of the front side door and a door hinge of the rear side door,
Forming two or more of the beads apart from each other in the vehicle front-rear direction,
The door beam of the front side door is arranged such that the front side door overlaps the front bead in the vehicle front-rear direction of the two or more beads in a vehicle side view,
4. The door hinge of the rear side door is arranged so as to be overlapped with a rear bead that is behind the front bead in the vehicle front-rear direction in a vehicle side view. Side structure of the car. An arrangement position of the door beam of the front side door with respect to the front bead,
6. The vehicle body side structure according to claim 5, wherein a position where a door hinge of the rear side door is arranged with respect to the rear bead is displaced in a vehicle vertical direction.   The vehicle body side portion structure according to claim 5 or 6, wherein a lower end portion of the front bead in the vehicle up-down direction is located at a substantially central portion of the B pillar in the vehicle front-rear direction.

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