JP2013163501A - Vehicle side structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle side structure capable of increasing joining strength between a pillar outer panel and a rocker outer panel against a lateral collision load which is deviated from the center axis of a pillar in the longitudinal direction of a vehicle.SOLUTION: A front bead 54 and a rear bead 56 are formed at a bottom end of a pillar outer panel 46. The front bead 54 is integrated with a front ridge 48A, the upper end is formed in a folded portion 54A set at a position adjacent to the front ridge 48A and is folded downward when viewed from the side of a vehicle, and a pair of bottom ends 54B, 54C are set on upper sides of portions 50A, 50B to be joined, respectively. The rear bead 56 is integrated with a rear ridge 48B, the upper end is formed in a folded portion 56A set at a position adjacent to the rear ridge 48B and is folded downward when viewed from the side of the vehicle, and a pair of bottom ends 56B, 56C are set on upper sides of the portions 50F, 50E to be joined, respectively.

Description

  The present invention relates to a vehicle body side structure.

  At the lower part of the vehicle body side part, the lower part of the pillar outer panel and the rocker outer panel are coupled (for example, see Patent Document 1). In such a coupling part, when the side impact load at the time of side collision (hereinafter simply referred to as “side collision”) acts on the central axis of the pillar, the coupling strength of a predetermined value or more is prevented so that the coupling portion does not peel off. Is secured.

JP 2009-1113769 A

  However, there is a case where the side impact load is deviated from the center axis of the pillar in the vehicle front-rear direction, and there is room for improvement from the viewpoint of the coupling strength between the pillar outer panel and the rocker outer panel against such a side impact load.

  In view of the above-described facts, the present invention has an object to obtain a vehicle body side structure that can improve the coupling strength between a pillar outer panel and a rocker outer panel against a side impact load that deviates in the vehicle longitudinal direction from the center axis of the pillar. It is.

  The vehicle body side structure according to the first aspect of the present invention includes a rocker outer panel that is disposed at a lower end portion of the vehicle body side with the vehicle front-rear direction as a longitudinal direction and constitutes a vehicle width direction outer side portion of the rocker, and the vehicle body side The lower end flange portion which is arranged at the portion with the vehicle vertical direction as the longitudinal direction and constitutes a portion on the outer side in the vehicle width direction of the pillar, and is coupled to the outer surface of the rocker outer panel by a plurality of coupled portions arranged in the vehicle longitudinal direction. Is formed in a hat shape with an opening facing the inside in the vehicle width direction on the upper side of the lower end flange portion, and the front side with the vehicle vertical direction as the longitudinal direction at a portion outside the vehicle width direction A pillar outer panel in which a ridge line portion and a rear ridge line portion are formed, and one of the front ridge line portion and the rear ridge line portion formed on a lower end portion of the pillar outer panel; And the upper end portion is set to one of the adjacent positions and folded back downward in a side view of the vehicle, and the pair of lower end portions is the upper side of any of the coupled portions. And beads set respectively.

  According to the vehicle body side part structure of the present invention described in claim 1, the lower end flange portion of the pillar outer panel is coupled to the outer surface of the rocker outer panel by the plurality of coupled portions arranged in the vehicle front-rear direction. Here, the bead formed at the lower end portion of the pillar outer panel is integrated with one of the front ridge line portion and the rear ridge line portion, and the upper end portion is set at one of the adjacent positions in a side view of the vehicle. The folded portion is folded back downward, and the pair of lower ends are respectively set on the upper side of any of the coupled portions. For this reason, when a side impact load is applied, the load is transmitted to either of the coupled parts through the front ridge line part and the rear ridge line part, and the front ridge line part or the rear ridge line part. The integrated bead is also effectively transmitted to other coupled parts. Therefore, even when the side impact load deviates from the center axis of the pillar in the longitudinal direction of the vehicle, concentration of the load on a specific coupled portion is avoided, and the coupling strength between the pillar outer panel and the rocker outer panel against the side impact load is avoided. Will improve.

  The vehicle body side part structure according to a second aspect of the present invention is the structure according to the first aspect, wherein the bead is integrated with the front bead integrated with the front ridge line part and the rear ridge line part. And a rear bead.

  According to the vehicle body side part structure of the present invention described in claim 2, the front bead integrated with the front ridge line part and the rear bead integrated with the rear ridge line part are formed as beads. Therefore, even when the side impact load is shifted from the central axis of the pillar to any side in the vehicle front-rear direction, the load is distributed to the plurality of coupled portions in a balanced manner.

  The vehicle body side part structure of the present invention described in claim 3 is the structure according to claim 1 or 2, wherein the bead is a main bead, and further, the lower end portion of the pillar outer panel is opposed to the main bead. An auxiliary bead that is arranged in parallel in the vehicle front-rear direction and extends in the vehicle vertical direction and is disposed on any other upper side of the coupled portion is formed.

  According to the vehicle body side part structure of the present invention as set forth in claim 3, the auxiliary bead is juxtaposed in the vehicle front-rear direction with respect to the main bead at the lower end portion of the pillar outer panel, extends in the vehicle vertical direction, and is connected to the coupled portion. It is arranged on any other upper side. For this reason, when a side collision load is applied during a side collision, a part of the load is transmitted to other coupled parts by the auxiliary bead, so that the side collision load is further dispersed.

  A vehicle body side part structure according to a fourth aspect of the present invention is the structure according to the third aspect, wherein a connecting bead for connecting the upper end of the auxiliary bead and the main bead in the vehicle front-rear direction is formed.

  According to the vehicle body side part structure of the present invention described in claim 4, the upper end portion of the auxiliary bead and the main bead are connected in the vehicle front-rear direction by the connecting bead. For this reason, at the time of a side collision, since a part of the side collision load is transmitted from the main bead side to the auxiliary bead side, the side collision load is more effectively distributed to the plurality of coupled portions.

  As described above, according to the vehicle body side part structure according to claim 1 of the present invention, the coupling strength between the pillar outer panel and the rocker outer panel against the side impact load deviated from the central axis of the pillar in the vehicle longitudinal direction is improved. It has an excellent effect of being able to be made.

  According to the vehicle body side part structure according to claim 2, even when the side impact load is shifted from the center axis of the pillar to any side in the vehicle front-rear direction, the load is balanced to the plurality of coupled portions. It has an excellent effect that it can be shared.

  According to the vehicle body side part structure of the third aspect, in the case of a side collision, the side collision load is distributed to the plurality of coupled parts by the auxiliary bead in addition to the main bead. It has the outstanding effect that it can disperse | distribute effectively to the to-be-joined part.

  According to the vehicle body side part structure of the fourth aspect, part of the side collision load is transmitted from the main bead side to the auxiliary bead side at the time of a side collision. It has an excellent effect that it can be dispersed.

1 is a side view showing a part of a vehicle body to which a vehicle body side part structure according to an embodiment of the present invention is applied. It is a side view showing the important section of the body side part structure concerning one embodiment of the present invention in the state seen from the body side. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 1. It is a side view which shows the principal part of the vehicle body side part structure which concerns on the modification of this invention. FIG. 4A shows a first modification. FIG. 4B shows a second modification. FIG. 4C shows a third modification.

(Configuration of the embodiment)
A vehicle body side part structure according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow IN indicates the vehicle width direction inner side.

  FIG. 1 shows a schematic side view of a part of a vehicle body 10 of an automobile (vehicle) to which the vehicle body side part structure 12 is applied. 2 is a side view of the main part of the vehicle body side structure 12 as viewed from the side of the vehicle body, and FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. It is shown.

  As shown in FIG. 1, a front side door opening 14 that is opened and closed by a front side door (not shown) is formed on the front side of the vehicle body side portion 10A. A rear-side door opening 16 that is opened and closed by a rear side door that is not to be opened is formed. On the lower edge side of the front door opening 14 and the rear door opening 16, that is, the lower ends of both sides of the vehicle body side 10A, a rocker 18 (also referred to as a side sill) is disposed with the vehicle longitudinal direction as the longitudinal direction. Yes.

  A front pillar 20 (A pillar) is disposed at the front edge of the front door opening 14. A center pillar 22 (B pillar) is disposed at the rear edge of the front door opening 14 and at the front edge of the rear door opening 16. Further, a rear pillar 24 (C pillar) is disposed at the rear edge of the rear door opening 16. The front pillar 20, the center pillar 22, and the rear pillar 24 have substantially the vehicle vertical direction as the longitudinal direction on both sides of the vehicle body side portion 10 </ b> A, and each upper end portion is connected to the roof side rail 26.

  As shown in FIG. 3, the rocker 18 is a vehicle body frame material having a closed cross-sectional structure, and includes a rocker inner panel 30 that constitutes a portion on the inner side in the vehicle width direction. The rocker inner panel 30 is arranged with the vehicle front-rear direction as a longitudinal direction, and has a cross-sectional hat shape with the opening facing outward in the vehicle width direction. Further, an upper flange portion 30A is formed at the upper end portion of the rocker inner panel 30, and a bulging portion 30C including a side wall portion 30C1 is formed at an intermediate portion in the height direction of the rocker inner panel 30, and the rocker inner panel 30 is formed. The lower flange part 30B is formed in the lower end part. The upper flange portion 30A, the side wall portion 30C1, and the lower flange portion 30B are arranged such that their general surfaces are planes including the vehicle vertical direction and the vehicle front-rear direction.

  In addition, the rocker 18 includes a rocker outer panel 32 that is disposed outside the rocker inner panel 30 in the vehicle width direction. The rocker outer panel 32 constitutes a portion of the rocker 18 on the outer side in the vehicle width direction, is arranged with the vehicle front-rear direction as the longitudinal direction, and has a cross-sectional hat shape with the opening directed inward in the vehicle width direction. An upper flange portion 32 </ b> A is formed at the upper end portion of the rocker outer panel 32, and a bulging portion 32 </ b> C including a side wall portion 32 </ b> C <b> 1 is formed at the height direction intermediate portion of the rocker outer panel 32. Is formed with a lower flange portion 32B. The upper flange portion 32A, the side wall portion 32C1, and the lower flange portion 32B are arranged such that their general surfaces are planes including the vehicle vertical direction and the vehicle front-rear direction.

  The rocker 18 basically has the upper flange portion 30A of the rocker inner panel 30 and the upper flange portion 32A of the rocker outer panel 32 spot-welded, and the lower flange portion 30B of the rocker inner panel 30 and the bottom of the rocker outer panel 32. The flange portion 32B is spot welded to form a closed cross-sectional structure. That is, the closed cross section 34 is formed by the rocker inner panel 30 and the rocker outer panel 32.

  A floor pan 40 is disposed inside the rocker 18 in the vehicle width direction. The terminal portion 40A on the outer side in the vehicle width direction of the floor pan 40 is spot welded to the lower side of the side wall portion 30C1 of the rocker inner panel 30. Further, a floor cross member 42 is disposed in the vehicle longitudinal direction intermediate portion on the upper surface side of the floor pan 40 with the vehicle width direction as a longitudinal direction. The floor cross member 42 is a side wall portion 30C1 of the rocker inner panel 30. Spot welded to the upper surface of the floor pan 40 and the upper surface of the floor pan 40.

  A lower portion of the cycle outer 36 constituting the vehicle body side plate portion is disposed outside the rocker outer panel 32 in the vehicle width direction. The lower end portion 36 </ b> A of the cycler outer 36 is spot welded to the lower flange portion 32 </ b> B of the rocker outer panel 32. In addition, a bulging portion 36 </ b> B that bulges outward in the vehicle width direction is formed in the lower portion of the cycle outer 36. A side door 38 is disposed above the bulging portion 36B. The side door 38 includes a door outer panel 38A that constitutes a portion on the outer side in the vehicle width direction, and a door inner panel 38B that constitutes a portion on the inner side in the vehicle width direction.

  Between the lower flange portion 30B of the rocker inner panel 30 and the lower flange portion 32B of the rocker outer panel 32, a lower end portion 44A of the pillar inner panel 44 is disposed. 3, a part of the pillar inner panel 44 is sandwiched between the upper flange portion 30A of the rocker inner panel 30 and the upper flange portion 32A of the rocker outer panel 32 on the vehicle front side and vehicle rear side of the cross section of FIG. It is arranged in a state. The pillar inner panel 44 constitutes a portion on the inner side in the vehicle width direction of the center pillar 22 and is erected substantially along the vertical direction of the vehicle, and is spotted on the lower flange portions 30B and 32B and the upper flange portions 30A and 32A. Welded. A hole 44 </ b> B for attaching an in-vehicle device (for example, a retractor or the like) (not shown) is formed in the lower portion of the pillar inner panel 44.

  The pillar inner panel 44 has a horizontal cross-sectional shape that is a hat shape with the opening facing outward in the vehicle width direction on the vehicle upper side of the rocker 18 and a pair of front and rear flange portions for joining at the front end portion and the rear end portion. (Not shown) is formed. On the outer side in the vehicle width direction of the pillar inner panel 44, a pillar outer panel 46 that constitutes a portion on the outer side in the vehicle width direction of the center pillar 22 is disposed to be opposed.

  The pillar outer panel 46 is disposed with the vehicle vertical direction approximately in the longitudinal direction. The pillar outer panel 46 has a hat shape in which a horizontal cross-sectional shape on an upper side of a lower end flange portion 46C described later has an opening portion facing inward in the vehicle width direction. As shown in FIG. 2, a pair of front and rear flange portions 46 </ b> A and 46 </ b> B for joining are formed at the front end portion and the rear end portion of the pillar outer panel 46. A front ridge line portion 48A and a rear ridge line portion 48B are formed in the longitudinal direction.

  The center pillar 22 is basically formed by spot welding a pair of front and rear flange portions (not shown) of the pillar inner panel 44 (see FIG. 3) and a pair of front and rear flange portions 46A and 46B of the pillar outer panel 46. It is configured in a closed cross-sectional structure. In other words, the pillar inner panel 44 (see FIG. 3) and the pillar outer panel 46 form a closed cross section.

  As shown in FIGS. 2 and 3, a lower end flange portion 46 </ b> C is formed at the lower end portion of the pillar outer panel 46 so as to overlap the side wall portion 32 </ b> C <b> 1 of the rocker outer panel 32 from the outside in the vehicle width direction. The lower end flange portion 46C is coupled by arc spot welding at a plurality (in the present embodiment, six in total) of the coupled portions 50A to 50F arranged in the vehicle longitudinal direction with respect to the outer surface of the side wall portion 32C1 of the rocker outer panel 32. . In addition, the x mark in a figure has shown the spot spot (welding site | part) of arc spot welding.

  Further, as shown in FIG. 2, the lower side of the pillar outer panel 46 has a front side serving as a main bead for transmitting a side impact load acting on the upper side to the coupled portions 50 </ b> A, 50 </ b> B, 50 </ b> E, 50 </ b> F. The bead 54 and the rear bead 56 are formed to be convex outward in the vehicle width direction.

  The front bead 54 is integrated with the front ridge line portion 48A, is formed in a substantially inverted U shape when viewed from the side of the vehicle, and the upper end is set at a position adjacent to the front ridge line portion 48A and folded back downward. 54A. The upper end position of the folded portion 54A is set to a height position that is substantially equal to the uppermost end position in an integral part of the front bead 54 and the front ridge line portion 48A. Of the pair of front and rear lower ends 54B and 54C of the front bead 54, the lower end 54B on the vehicle front side is set above the coupled portion 50A, and the lower end 54C on the vehicle rear side is coupled to the coupled portion 50B. Is set on the upper side.

  The rear bead 56 is integrated with the rear ridge line portion 48B, is formed in a substantially inverted U shape when viewed from the side of the vehicle, and has an upper end set at a position adjacent to the rear ridge line portion 48B and folded downward. The folded portion 56A is formed. The upper end position of the folded portion 56A is set to a height position that is substantially equal to the uppermost end position in the integrated part of the rear bead 56 and the rear ridge line portion 48B. Of the pair of front and rear lower end portions 56C and 56B of the rear bead 56, the lower end portion 56B on the vehicle rear side is set on the upper side of the coupled portion 50F, and the lower end portion 56C on the vehicle front side is coupled to the coupled portion. It is set above 50E.

  The folded portion 54A of the front bead 54 and the folded portion 56A of the rear bead 56 are set at the same height position. Further, the lowermost positions of the lower end portions 54B and 54C of the front bead 54 and the lowermost positions of the lower end portions 56B and 56C of the rear bead 56 are set to the same height position.

  In addition, an auxiliary bead 58 arranged in parallel in the vehicle front-rear direction (vehicle rear side) with respect to the front bead 54 is formed at the lower end portion of the pillar outer panel 46 so as to protrude outward in the vehicle width direction. The auxiliary bead 58 extends in the vehicle vertical direction and is disposed above the coupled portion 50C. In addition, an auxiliary bead 60 that is juxtaposed in the vehicle front-rear direction (vehicle front side) with respect to the rear bead 56 is formed at the lower end portion of the pillar outer panel 46 so as to protrude outward in the vehicle width direction. . The auxiliary bead 60 extends in the vehicle vertical direction and is disposed above the coupled portion 50D.

  The height positions of the lowermost ends of the auxiliary beads 58 and the auxiliary beads 60 are set to the same height positions as the lowermost ends of the lower end portions 54B and 54C of the front bead 54 and the lower end portions 56B and 56C of the rear bead 56. Yes. The height positions of the uppermost ends of the auxiliary bead 58 and the auxiliary bead 60 are set to height positions lower than the respective height positions of the folded portion 54A of the front bead 54 and the folded portion 56A of the rear bead 56. Yes.

  Further, a connecting bead 62 that connects the upper end of the auxiliary beads 58 and 60 and the rear bead 56 in the vehicle front-rear direction is formed at the lower end of the pillar outer panel 46 so as to protrude outward in the vehicle width direction. Yes. The height position of the uppermost end of the connecting bead 62 is set to a height position lower than the respective height positions of the folded portion 54A of the front bead 54 and the folded portion 56A of the rear bead 56.

(Operation and effect of the embodiment)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 3, when the collision body 100 collides with the lower part of the vehicle body side part 10 </ b> A, the side collision load F is input to the lower part of the center pillar 22. At this time, the lower portion of the center pillar 22 tends to be deformed so as to fall inward in the vehicle width direction, the load f1 shown in FIG. 2 is transmitted along the front ridgeline portion 48A, and the load f2 is along the rear ridgeline portion 48B. Is transmitted. When a side collision load F (see FIG. 3) is input with a shift toward the vehicle front side from the center axis of the center pillar 22, the load f1 is larger than the load f2 and is larger than the center axis of the center pillar 22. When the side impact load F is input after shifting to the vehicle rear side, the load f2 becomes larger than the load f1.

  Here, as described above, the front bead 54 formed at the lower end portion of the pillar outer panel 46 is integrated with the front ridge line portion 48A, and the upper end portion is set at a position adjacent to the front ridge line portion 48A in a vehicle side view. The folded portion 54A is folded back downward. A lower end portion 54B on the front side of the vehicle in the front bead 54 is set above the coupled portion 50A, and a lower end portion 54C on the vehicle rear side in the front bead 54 is set on the upper side of the coupled portion 50B. For this reason, when a side collision load F (see FIG. 3) acts during a side collision, the load f1 transmitted along the front ridge line portion 48A passes through the two load transmission paths by the front bead 54, and the load f1a is In addition to being transmitted to the coupled portion 50A side, the load f1b is transmitted to the coupled portion 50B side.

  Further, the rear bead 56 formed at the lower end portion of the pillar outer panel 46 is integrated with the rear ridge line portion 48B, and the upper end portion is set at a position adjacent to the rear ridge line portion 48B when viewed from the side of the vehicle. The folded portion 56A is folded back to the side. The lower end 56B on the vehicle rear side in the rear bead 56 is set on the upper side of the coupled portion 50F, and the lower end portion 56C on the vehicle front side in the rear bead 56 is set on the upper side of the coupled portion 50E. Yes. For this reason, when a side collision load F (see FIG. 3) is applied during a side collision, the load f2 transmitted along the rear ridge line portion 48B passes through the two load transmission paths by the rear bead 56, and the load f2 In addition to transmitting f2a to the coupled portion 50F side, the load f2b is transmitted to the coupled portion 50E side.

  Here, a supplementary explanation will be given while comparing with a comparative structure in which the front bead 54 and the rear bead 56 are not formed in the present embodiment. For example, when a side impact load is input with a shift to the vehicle front side with respect to the center axis of the center pillar 22, a large load acts on the coupled portion corresponding to the coupled portion 50A in the comparison structure, and Almost no load acts on the coupled portion corresponding to the coupling portion 50E. The reason why a large load acts on the coupled portion corresponding to the coupled portion 50A is that the position in the vehicle front-rear direction is close to the side collision portion and a large load is transmitted along the front ridge line portion (48A). It is. Further, the load hardly acts on the coupled portion corresponding to the coupled portion 50E because the load in the vehicle longitudinal direction is far from the side collision portion and the load transmitted along the rear ridge line portion (48B) is also included. This is because it is not input.

  On the other hand, in this embodiment, even if a side collision load is input with a shift toward the vehicle front side with respect to the center axis of the center pillar 22, the load is also shared by the coupled portion 50 </ b> E by the rear bead 56. In addition, the load input to the coupled portion 50A can also be reduced by sharing the load with the coupled portion 50B by the front bead 54. For this reason, the coupling strength between the pillar outer panel 46 and the rocker outer panel 32 against a side impact load as in this example is improved compared to the coupling strength of the contrast structure. Even when the side impact load is input to the rear side of the vehicle with respect to the center axis of the center pillar 22, in this embodiment, the load burden can be distributed as in the previous example. The coupling strength between the pillar outer panel 46 and the rocker outer panel 32 against a large side impact load is also improved.

  In the present embodiment, auxiliary beads 58 and 60 are formed at the lower end of the pillar outer panel 46, and the auxiliary beads 58 and 60 are juxtaposed in the vehicle front-rear direction with respect to the front bead 54 and the rear bead 56. The vehicle extends in the vertical direction of the vehicle and is disposed above the coupled portions 50C and 50D. For this reason, when a side collision load F (see FIG. 3) is applied during a side collision, the loads f3a and f3b, which are part of the load, are moved along the auxiliary beads 58 and 60 to the other coupled portions 50C and 50D. As a result, the side impact load F is further dispersed.

  In the present embodiment, the upper ends of the auxiliary beads 58 and 60 and the rear bead 56 are connected to each other in the vehicle front-rear direction by a connecting bead 62. For this reason, in the case of a side collision, a part of the load is transmitted from the rear bead 56 side to the auxiliary beads 58, 60 side, so that the side collision load F (see FIG. 3) is more effectively distributed. That is, the side impact load F (see FIG. 3) is shared (almost uniformly input) in a well-balanced manner to all the coupled portions 50A to 50F.

  As described above, according to the vehicle body side structure 12 according to the present embodiment, the pillar outer panel 46 with respect to the side impact load F (see FIG. 3) deviated from the central axis (center) of the center pillar 22 in the vehicle front-rear direction. The coupling strength with the rocker outer panel 32 can be improved (improvement of robustness). As a result, the deformation amount of the vehicle body 10 at the time of a side collision is also suppressed.

(Modification of the embodiment)
Next, a modification of the above embodiment will be described with reference to FIG. In addition, about the structure substantially the same as the said embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 4A shows a first modified example in a simplified side view corresponding to FIG. 2 of the above embodiment. As shown in FIG. 4A, in this first modification, the lower end flange portion 46C of the pillar outer panel 46 is arranged in a total of five in the vehicle front-rear direction with respect to the outer surface of the side wall portion 32C1 of the rocker outer panel 32. Are coupled by arc spot welding at the coupled portions 50A, 50B, 50C, 50E, and 50F. And this 1st modification becomes the structure similar to the said embodiment except the point to which the to-be-joined part 50D shown by FIG. 2, the auxiliary bead 60, and the connection bead 62 are not formed.

  FIG. 4B shows a second modified example in a simplified side view corresponding to FIG. 2 of the above embodiment. As shown in FIG. 4B, in this second modification, the lower end flange portion 46C of the pillar outer panel 46 is arranged in a total of four in the vehicle front-rear direction with respect to the outer side surface of the side wall portion 32C1 of the rocker outer panel 32. Are coupled by arc spot welding at the coupled portions 50A, 50B, 50E, and 50F. And this 2nd modification becomes the structure similar to a 1st modification except the point 50C and auxiliary bead 58 which are shown in Drawing 4 (A) are not formed.

  FIG. 4C shows a third modified example in a simplified side view corresponding to FIG. 2 of the above embodiment. As shown in FIG. 4 (C), in this third modified example, instead of the coupled parts 50B and 50E (see FIG. 4 (B)) of the second modified example, the coupled part 50A and coupled The coupled portion 50G is set at an intermediate portion with the portion 50F, and the lower end flange portion 46C of the pillar outer panel 46 is arranged in a total of three to-be-aligned with respect to the outer side surface of the side wall portion 32C1 of the rocker outer panel 32 in the vehicle longitudinal direction. It couple | bonds by arc spot welding with the coupling | bond part 50A, 50G, 50F. In the third modification, the lower end of the front bead 54 on the vehicle rear side and the lower end of the rear bead 56 on the front side of the vehicle are integrated. In the figure, the integrated lower end is indicated by reference numeral 55C. The lower end 55C is set on the upper side of the coupled portion 50G.

  As described above, also according to the first to third modifications described above, it is possible to improve the coupling strength between the pillar outer panel 46 and the rocker outer panel 32 with respect to a side impact load shifted from the center axis of the center pillar 22 in the vehicle front-rear direction.

(Supplementary explanation of the embodiment)
In the above embodiment, as shown in FIG. 2, the front bead 54, the rear bead 56, the auxiliary beads 58 and 60, and the connection bead 62 are formed at the lower end portion of the pillar outer panel 46 of the center pillar 22. However, the front bead (54), the rear bead (56), the auxiliary bead (58, 60), and the connecting bead (62) are in other pillars (for example, the front pillar 20 and the rear pillar 24 shown in FIG. 1). You may form in the lower end part of the pillar outer panel which comprises the site | part of the vehicle width direction outer side.

  In the above embodiment, as shown in FIG. 2, the lowest positions of the pair of front and rear lower ends 54B and 54C in the front bead 54 are set to the same height position. ), The lowermost position of the lower end part (54B) on the front side (front ridge line part (48A) side) is set to a height position slightly above the lowermost position of the lower end part (54C) on the rear side. Good. Furthermore, as another modification, the lowermost position of the rear lower end (54C) of the front bead (54) is lower than the lowermost position of the lower end (54B) of the front (front ridge line (48A) side). A configuration in which the height is set slightly above is also possible.

  In the above embodiment, the lowermost positions of the pair of front and rear lower ends 56C and 56B in the rear bead 56 are set to the same height position. For example, the rear side (rear) in the rear bead (56) is used. The lowermost position of the lower end portion (56B) of the side ridge line portion (48B side) may be set to a height position slightly above the lowermost position of the front lower end portion (56C). Furthermore, as another modified example, the lowermost position of the lower end (56C) on the front side of the rear bead (56) is the lowermost position of the lower end (56B) on the rear side (the side of the rear ridge line part (48B)). A configuration in which the height is set slightly above the position is also possible.

  That is, the front bead (54) and the rear bead (56) are substantially reversed in which the lowermost position of one lower end portion is set to a height position higher than the lowermost position of the other lower end portion in a vehicle side view. It may be formed in a J shape.

  As a modification of the above embodiment, only one of the front bead (54) and the rear bead (56) may be set at the lower end of the pillar outer panel (46).

  As a modification of the above embodiment, the connecting bead (62) may connect the upper end of the auxiliary bead (58, 60) and the front bead (54) in the vehicle front-rear direction. The connecting bead (62) may connect the upper end of the auxiliary bead (58, 60) and both the front bead (54) and the rear bead (56) in the vehicle front-rear direction. Further, for example, a first connecting bead for connecting the upper end of the auxiliary bead (58) and the front bead (54) in the vehicle front-rear direction, and an upper end of the auxiliary bead (60) and the rear bead (56). You may form the 2nd connection bead connected in the vehicle front-back direction.

  Further, as a modified example of the above-described embodiment, a plurality of coupled portions in which the lower end flange portion (46C) of the pillar outer panel (46) is arranged in the vehicle front-rear direction with respect to the outer surface of the side wall portion (32C1) of the rocker outer panel (32). The means for coupling at (50A to 50F) may be other coupling means such as welding other than arc spot welding or bolt fastening.

  Further, according to the concept of “arranged in the vehicle body side portion with the vehicle vertical direction as the longitudinal direction” according to claim 1, as in the above-described embodiment, the vehicle body side portion is slightly inclined with respect to the vertical direction (substantially The case where it is arranged with the vehicle vertical direction) as the longitudinal direction is also included.

  The concept of “the vehicle vertical direction is the longitudinal direction” in the “front ridge line portion and the rear ridge line portion whose longitudinal direction is the vehicle vertical direction” according to claim 1 is the same as the above embodiment. A case in which a direction (substantially in the vehicle vertical direction) that is slightly inclined and gradually changes with respect to the direction is defined as the longitudinal direction is also included.

  In addition, in the concept of “upper side” in “each set on the upper side of any of the coupled parts” according to claim 1, as in the above-described embodiment, both directly above and just above the upper side are seen in the vehicle side view. included.

  Further, the concept of “extending in the vehicle vertical direction” described in claim 3 includes a case in which the vehicle extends in the vertical direction as in the above-described embodiment, and strictly speaking, it does not extend in the vertical direction of the vehicle. However, a case where the same operation and effect as those obtained when the vehicle extends in the vertical direction is obtained and the vehicle is understood to extend substantially in the vertical direction of the vehicle is included.

  In addition, the concept of “upper side” in “arranged on any other upper side of the coupled portion” according to claim 3 includes both of the upper side and the vicinity immediately above the upper side in the vehicle side view as in the above embodiment. Is included. Note that “any other part to be coupled” according to claim 3 is to be fastened arranged below the main bead (the front bead 54, the rear bead 56), as is clear from the above embodiment. It means any of the fastened parts (50C, 50D) other than the parts (50A, 50B, 50E, 50F).

  In addition, the said embodiment and the above-mentioned some modification can be implemented combining suitably.

10A Car body side part 12 Car body side part structure 18 Rocker 22 Center pillar 32 Rocker outer panel 46 Pillar outer panel 46C Lower end flange part 48A Front ridge line part 48B Rear ridge line part 50A, 50B, 50C, 50D, 50E, 50F, 50G Joined part 54 Front bead (main bead)
54A Folding part 56 Rear bead (main bead)
56A Turn-up part 58 Auxiliary bead 60 Auxiliary bead 62 Connection bead

Claims (4)

A rocker outer panel that is disposed at the lower end of the vehicle body side as the longitudinal direction of the vehicle and constitutes a vehicle width direction outer side portion of the rocker;
The vehicle is arranged on the side of the vehicle body with the vertical direction of the vehicle as a longitudinal direction to form a vehicle width direction outer side portion of the pillar, and is coupled to the outer side surface of the rocker outer panel by a plurality of coupled portions arranged in the vehicle longitudinal direction. A lower end flange portion is formed, and a horizontal cross-sectional shape is formed on the upper side of the lower end flange portion with a hat shape with an opening portion facing inward in the vehicle width direction. A pillar outer panel in which a front ridge line part and a rear ridge line part are formed, and
Formed at the lower end portion of the pillar outer panel, integrated with one of the front ridge line portion and the rear ridge line portion, and the upper end portion is set at one of the adjacent positions in the vehicle side view and below A bead that is folded back to the side, and a pair of lower ends are respectively set on the upper side of any of the coupled parts;
A vehicle body side part structure.   The vehicle body side part structure according to claim 1, wherein a front bead integrated with the front ridge line part and a rear bead integrated with the rear ridge line part are formed as the beads.   The bead is a main bead, and is arranged in parallel with the main bead in the vehicle front-rear direction at the lower end portion of the pillar outer panel and extends in the vehicle vertical direction, and is disposed on any other upper side of the coupled portion. The vehicle body side part structure according to claim 1 or 2, wherein an auxiliary bead is formed.   The vehicle body side part structure according to claim 3, wherein a connecting bead for connecting an upper end portion of the auxiliary bead and the main bead in a vehicle front-rear direction is formed.

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