JP2017171113A - Vehicle body side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body side part structure capable of improving the strength of a B pillar lower portion to a side load input point.SOLUTION: Beads 8 and 9 of which an extending direction intersects a vehicle fore-and-aft direction are provided at a lower part of a pillar 15. A front door beam 7 which is a side load input member or a rear door hinge 6 is disposed in an extending area of the beads 8 and 9 in a vehicle side view, thereby improving the strength of a B pillar 15 itself to an inputted side load and dispersing the inputted side load to a side sill 11. A layout of the front door beam 7 to the front bead 8 and a layout of the rear door hinge 6 to the rear bead 9 are shifted in a vehicle vertical direction, thereby shifting a side load input point to the B pillar 15 and dispersing side load transmission to the side sill 11. Lower end portion of the beads 8 and 9 are made to be above the side sill 11, thereby reducing the side load loading transmitted to a striking point with the side sill 11.SELECTED DRAWING: Figure 3

Description

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

  A side load may be input to the vehicle. In this case, the strength of the lower part of the B pillar in the vehicle body side structure is important. As such a lower structure of the B pillar for a vehicle, 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 vertical direction is formed at the lower end portion of the B-pillar, and the strength of the B-pillar lower portion with respect to a lateral load, in particular, the connection between the B-pillar and the side sill. Strength is improved.

JP2013-163501A

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

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

  According to the first aspect of the present invention, which achieves the above object, the lower end portion of the B pillar is connected to a side sill extending in the vehicle longitudinal direction, and a lateral load input member is disposed on the outer side in the vehicle width direction of the B pillar. It is a vehicle body side structure, and a bead whose extending direction intersects with the vehicle front-rear direction is provided in the vehicle vertical direction lower part of the B pillar, and the arrangement of the side load input member is a position overlapping the bead in a side view of the vehicle It was made to become that.

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

  According to a second aspect of the present invention, in the vehicle body side part structure according to the first aspect, the extending direction of the bead has a vehicle longitudinal direction component.

  According to this structure, the side load input from the side load input member can be efficiently distributed to the side sill.

  The invention according to claim 3 is the vehicle body side part structure according to claim 1 or 2, wherein the lower end portion of the bead is a connecting portion between the vehicle width direction outer end portion of the side sill and the lower end portion of the B pillar. It is characterized by being positioned above the vehicle vertical direction.

  According to this configuration, it is possible to reduce the side load load transmitted from the side load input member to the welding point (spot) between the B pillar and the side sill through the bead.

  The invention according to claim 4 is the vehicle body side part structure according to any one of claims 1 to 3, 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. It is characterized by that.

  According to this configuration, by setting the door beam of the front side door and the door hinge of the rear side door to the side load input member, it is possible to reliably improve the strength of the entire B pillar with respect to the side 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 side load input member is both a door beam of a front side door and a door hinge of a rear side door, Two or more beads are formed apart from each other in the vehicle front-rear direction, and the door beam of the front side door is disposed so as to overlap with a front bead forward of the vehicle front-rear direction among the two or more beads in a vehicle side view. The door hinges of the rear side doors are arranged so as to overlap the rear beads in the vehicle front-rear direction behind the front beads in a side view of the vehicle.

  According to this configuration, the side load can be distributed 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. Further, the bond strength can be further improved.

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

  According to this configuration, if both of the arrangement positions are the same in the vehicle vertical direction, the side load is concentrated at the same height position of the B pillar. Thus, it is possible to avoid the concentration of the side load at the same height position of the B pillar and further improve the strength of the lower part of the B pillar with respect to the side 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, a vehicle vertical direction lower end portion of the front bead is located at a substantially central portion of the B pillar in the vehicle front-rear direction. To do.

  According to this configuration, when the side load is input to the B pillar, the side load is easily transmitted to the side sill hitting point along the front and rear ridge lines of the B pillar in the vehicle front-rear direction, via the front bead. As a result, the lateral load can be transmitted to the center point of the B-pillar in the longitudinal direction of the vehicle, so that local concentration of the side load at the bottom of the B-pillar is avoided, and the B-pillar with respect to the side load input point is avoided. It becomes possible to further improve the lower joint strength.

  According to the present invention, there is a vehicle body side 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 side load input member is disposed outside the B pillar in the vehicle width direction, A bead whose extending direction intersects with the vehicle front-rear direction is provided at the lower part of the B pillar in the vehicle vertical direction, and the side load input member is disposed so as to overlap the bead in a side view of the vehicle. Accordingly, it is possible to improve the strength of the B pillar itself with respect to the side load input from the side load input member and to disperse the side load to the side sill. Strength and bond strength can be improved. Thereby, it becomes possible to improve the protection performance of the passenger | crew with respect to a side collision.

1 is a schematic side view showing an embodiment of a vehicle to which a vehicle body side part structure of the present invention is applied. It is a perspective view of the vehicle body side part structure 10 of the vehicle of FIG. 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 an effect | action of the vehicle body side part structure 10 of FIG. It is explanatory drawing of an effect | action of the conventional vehicle body side part structure.

  In the following embodiments, an apparatus and a method for embodying the present invention are illustrated. However, the technical idea of the present invention does not specify the material, shape, arrangement, etc. of the component parts below. The technical idea of the present invention can be modified in various ways within the technical scope of the claims.

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

  4 indicates a hit point (welding point). Of these, the hit point S is a hit point between the B pillar 15 and the side sill 11 (hereinafter referred to as a hit point with the side sill), and a hit point P (indicated by a broken line in FIG. 4). The small X shown) indicates the hitting point of the door flange portion in the B pillar 15 itself. The door contact flange portion is a flange-shaped portion at 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 at the rear of the front engine room. This is a wagon type vehicle having a long cabin 2.

  In the vehicle 1, the front side door 3 is provided on the both outer sides of the vehicle compartment 2 in the vehicle width direction and can be opened and closed at the front of the vehicle, and the rear side door 4 can be opened and closed at the rear of the vehicle. As is well known, the front side door 3 is attached to the vehicle body through a front door hinge 5 provided on an A-pillar 32, which will be described later, and the rear side door 4 is provided on a B-pillar 15, which will be described later. 6 is attached to the vehicle body so as to be freely opened and closed. The rear side door 4 is the same, 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 that forms both ends of the vehicle compartment 2 in the vehicle width direction, as shown in FIG. 2, the side sill 11 extending in the vehicle front-rear direction has both ends in the vehicle width direction below the vehicle compartment (hereinafter simply referred to simply as “vehicle sill”). (Also called left and right). Each side sill 11 is formed in a hollow closed cross-sectional shape extending in the vehicle front-rear direction by a side sill outer 12 and a side sill inner 13 which face each other. Further, the rear end portions of the left and right side sills 11 are coupled 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 compartment 2. Each side rail 22 is formed in a hollow closed cross-sectional shape extending in the vehicle front-rear direction by an opposing side rail outer 23 and side rail inner 24. In addition, between the side sill 11 and the vehicle front end of the side rail 22, an A pillar 32 extends in the vehicle vertical direction along the vehicle front edge of the front side door opening located at both ends in the vehicle width direction. Each A pillar 32 is formed in a hollow closed cross-sectional shape by an opposing A pillar outer 33 and A pillar inner 34.

  Further, between the front side door opening and the rear side door opening located at both ends in the vehicle width direction, a B pillar 15 in which the vehicle lower end is coupled to the side sill 11 and the vehicle upper end is coupled to the side rail 22. Extends in the vehicle vertical direction. Each B pillar 15 is formed in a hollow closed cross-sectional shape by an opposing B pillar outer 16 and B pillar inner 17. Each B pillar 15 is provided with a reinforcement B pillar (not shown) extending between the B pillar outer 16 and the B pillar inner 17 to stiffen the B pillar 15. Note that the lower end portion of the vehicle of the reinforcement B pillar is coupled to the side sill inner 13 to ensure the coupling rigidity between the B pillar 15 and the side sill 11.

  Further, between the side sill 11 and the side rail 22, a C pillar 39 extends in the vehicle vertical direction along the vehicle rear edge of the rear side door opening 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 extending direction intersects the vehicle front-rear direction are formed at the lower part of the B pillar 15 apart from each other in the vehicle front-rear direction. Yes. Further, these beads 8 and 9 both have a vehicle longitudinal direction component as an extending direction component. Specifically, the two beads 8 and 9 of this embodiment are both formed obliquely downward and downward from the front of the vehicle to the rear of the vehicle. These beads 8 and 9 are formed simultaneously with the steel plate press molding of the B pillar outer 16 constituting the B pillar 15. The bead has various implications, but here shows a series of bowl-shaped bulges. In general, when a bead is formed by pressing a steel plate, work hardening occurs due to residual stress accompanying the processing, and mechanical strength is improved.

  Of these two beads 8, 9, if the bead in the front of the vehicle is the front bead 8 and the bead in 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 the rear bead 9 in a side view of the vehicle. Of course, the arrangement of the front door beam 7 of the front side door 3 is based on the condition that the front side door 3 is closed.

  As shown in FIG. 4, the lower end in the vehicle vertical direction of both the two beads 8 and 9 is a connecting portion between the outer end in the vehicle width direction of the side sill 11 and the lower end of the B pillar 15 (B pillar outer 16). That is, it is located above the vehicle from 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. 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).

  In addition, 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 shifted in the vehicle vertical direction. Yes. Specifically, the arrangement position of the front door beam 7 of the front side door 3 with respect to the front bead 8 is slightly below the fixed position of the rear door hinge 6 of the rear side door 4 with respect to the rear bead 9.

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

  Here, the side load from the front door beam 7 is input to the front bead 8 and the side load from the rear door hinge 6 is input to the rear bead 9 also helps to disperse the side load. The strength of the lower part of the B pillar with respect to the direction load input point can be improved. Further, shifting 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 also causes the lateral load to be dispersed. Connected. Further, since the lower end portion of the front bead 8 is located at the vehicle longitudinal direction center portion of the B pillar 15, the side load input from the front door beam 7 is shifted from the vehicle longitudinal direction center portion of the B pillar 15 to the vehicle longitudinal direction. Therefore, the side load can be efficiently distributed to the side sill 11 by that amount. Moreover, since the vehicle vertical direction lower end part of the two beads 8 and 9 is located above the vehicle from the connecting part of the vehicle width direction outer side end part of the side sill 11 and the lower end part of the B pillar 15 (B pillar outer 16), The lateral load load transmitted from each bead 8 or 9 to the hit point S with the side sill can be reduced.

  FIG. 8 is an explanatory view of the operation of the conventional vehicle body side part structure. In the conventional vehicle body side structure, there is no bead below 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 side load input from the front door beam 102 and the rear door hinge 103, which are side load input members, is easily transmitted to the door contact flange portion hitting point P, and accordingly, the B pillar with respect to the side load input point. There is a possibility that the strength of the lower part of 101 becomes insufficient.

  In addition, as shown in FIGS. H may be arranged inside the bead 8. Gauge hole H is a positioning hole required at the time of manufacture, for example. By disposing H inside the bead 8, a decrease in strength can be avoided. In this embodiment, the two beads 8 and 9 are both formed obliquely downward and downward from the front of the vehicle to the rear of the vehicle. For example, as shown by a broken line in FIG. It may be formed obliquely downward and downward. In this embodiment, two beads 8 and 9 are formed in the vehicle longitudinal 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 not described above. Therefore, the technical scope of the present invention is defined only by the invention-specifying matters described in the scope of claims which is 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 Car 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)

A vehicle body side 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 side load input member is disposed outside the B pillar in the vehicle width direction,
A bead whose extending direction intersects with the vehicle front-rear direction is provided in the vehicle vertical direction lower part of the B pillar,
The vehicle body side part structure according to claim 1, wherein the side load input member is arranged so as to overlap with the bead in a side view of the vehicle.   The vehicle body side part structure according to claim 1, wherein the extending direction of the bead has a vehicle longitudinal direction component.   3. The vehicle body according to claim 1, wherein a lower end portion of the bead is positioned above the connecting portion between a vehicle width direction outer side end portion of the side sill and a lower end portion of the B pillar in the vehicle vertical direction. Side structure.   The vehicle body side part structure according to any one of claims 1 to 3, 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 side 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 beads apart in the vehicle longitudinal direction;
The door beam of the front side door is disposed so as to overlap with the front bead in the front-rear direction of the vehicle among the two or more beads in a vehicle side view,
The door hinge of the said rear side door is arrange | positioned so that it may become a position which overlaps with the rear bead of the vehicle front-back direction back rather than the said front bead in a vehicle side view. Car body side structure. 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 of the door hinge of the rear side door with respect to the rear bead is shifted in a vehicle vertical direction.   The vehicle body side part structure according to claim 5 or 6, wherein a 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 front-rear direction.

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