JP2016068660A - Vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately transmit load between a pillar and side sills while securing a large cross-section of a lower part of a pillar.SOLUTION: A pillar outer panel 12 is arranged outside a sill outer panel 22 in a vehicle width direction. A pillar inner panel 11 is arranged inside a sill inner panel 21 in the vehicle with direction. On at least one of the pillar outer panel 12 and the pillar inner panel 11, a projecting part 13 projecting toward the side sills and connected to the flanges 21c, 22c of the side sill, is formed. While securing a large cross-section of the lower part of the pillar, a load of the pillar is input to the flanges 21c, 22c having relatively high strength in the side sill.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle body structure in the vicinity of a connection portion between a pillar extending in the vertical direction and a side sill extending in the front-rear direction.

  As a vehicle body structure in the vicinity of the connection portion between the pillar and the side sill, for example, one described in Patent Document 1 is known. According to this vehicle body structure, the inner panel of the front pillar and the inner panel of the side sill are integrally formed, and the outer panel of the front pillar and the outer panel of the side sill are integrally formed.

JP 2013-159290 A

However, in the vehicle body structure described in Patent Document 1, the front pillar panel is connected to the body portion of the panel that is relatively fragile at the side sill. As a result, there is a problem that the load cannot be accurately transmitted from the front pillar to the side sill, and the rigidity of the entire vehicle body is impaired.
In order to solve this problem, it is conceivable to connect one panel of the front pillar to the flange of the side sill. However, if one panel of the front pillar is placed in alignment with the flange of the side sill, the inner panel and the outer panel will approach in the vehicle width direction. As a result, the closed cross section of the front pillar becomes smaller and the front pillar is bent and deformed. It becomes easy.

  The present invention has been made in view of the above circumstances, and its object is to provide a vehicle body structure capable of accurately transmitting a load between the pillar and the side sill while ensuring a large cross section of the lower part of the pillar. Is to provide.

  In order to achieve the above object, according to the present invention, there is provided a pillar outer panel and a pillar inner panel, a pillar extending in the vertical direction, and a sill outer panel and a sill inner panel which are joined to each other by a flange. A side sill that extends in the vehicle front-rear direction while forming a closed cross section and is connected to a lower end side of the pillar, the pillar outer panel is disposed on the outer side in the vehicle width direction from the sill outer panel, and the pillar inner panel is A vehicle body structure is provided that is disposed on the inner side in the vehicle width direction from the sill inner panel, and that protrudes toward the side sill on at least one of the pillar outer panel and the pillar inner panel and forms a protrusion connected to the flange. .

  According to this vehicle body structure, at least one of the pillar outer panel and the pillar inner panel is connected to the flange having a relatively high strength in the side sill, so that a load can be accurately transmitted between the pillar and the side sill. Here, since the pillar outer panel and the pillar inner panel are arranged apart from the side sill in addition to the protruding part that protrudes toward the side sill, the cross section in plan view of the lower part of the pillar can be enlarged in the vehicle width direction. Thereby, the bending deformation of the pillar can be suppressed and the rigidity of the entire vehicle body can be improved.

  In the vehicle body structure, the pillar may be a front pillar connected to a front end side of the side sill.

  According to this vehicle body structure, it is possible to suppress bending deformation of the front pillar and improve the rigidity of the entire vehicle body.

  In the vehicle body structure, a front end of the side sill may be closed.

  According to this vehicle body structure, the rigidity and strength of the front end side of the side sill can be improved, and the load at the time of a small overlap collision can be accurately transmitted to the side sill, so that energy can be absorbed accurately by the side sill. Thereby, at the time of a small overlap collision, the amount of intrusion into the vehicle compartment such as tires can be suppressed.

  The vehicle body structure includes a toe board that partitions the vehicle compartment in the front and the rear, and a stiffening panel that forms a closed cross section in side view together with the toe board and extends in the vehicle width direction, and an outer end in the vehicle width direction of the stiffening panel is The front end of the sill inner panel may be connected.

  According to this vehicle body structure, since the stiffening panel and the sill inner panel are connected, the strength of the side sill on the inner side in the vehicle width direction is improved. During a small overlap collision, the front wheel comes into contact with the side sill first from the outside in the vehicle width direction. Here, since the strength of the sill outer panel side is relatively lower than that of the sill inner panel side, energy absorption is achieved by smoothly deforming the sill out panel side at the time of collision. As a result, the intrusion amount of the tire or the like into the vehicle room at the time of the small overlap collision is suppressed.

  In the vehicle body structure, the side sill may be configured such that the strength on the front end side is lower than that on the rear side with respect to input from the front.

  According to this vehicle body structure, energy absorption is achieved by deforming the front end of the side sill in the small overlap collision.

  In the vehicle body structure, the side sill may be configured such that the strength of the front end side of the sill outer panel is lower than that of the rear side.

  According to this vehicle body structure, energy absorption is achieved by deforming the front end side of the sill outer panel during a small overlap collision. At the time of a small overlap collision, the front wheel comes into contact with the side sill first from the outside in the vehicle width direction, so that the sill outer panel side is smoothly deformed. As a result, the intrusion amount of the tire or the like into the vehicle room at the time of the small overlap collision is suppressed.

  According to the present invention, the pillar has a pillar outer panel and a pillar inner panel, and has a pillar extending in the vertical direction and a sill outer panel and a sill inner panel joined to each other by a flange portion. A side sill connected to a lower end side of the pillar outer panel, the pillar outer panel is disposed on the outer side in the vehicle width direction from the sill outer panel, the pillar inner panel is disposed on the inner side in the vehicle width direction from the sill inner panel, There is provided a vehicle body structure in which at least one of a pillar outer panel and the pillar inner panel and the flange of the side sill are fastened with a collar member interposed therebetween.

  According to this vehicle body structure, a load can be accurately transmitted between the pillar and the side sill by connecting at least one of the pillar outer panel and the pillar inner panel to the flange of the side sill. Here, since the pillar outer panel and the pillar inner panel are spaced apart from the side sill, the cross section in plan view of the lower part of the pillar can be enlarged in the vehicle width direction. Thereby, the bending deformation of the pillar can be suppressed and the rigidity of the entire vehicle body can be improved.

  According to the present invention, it is possible to accurately transmit a load between the pillar and the side sill while ensuring a large cross section of the pillar lower portion.

FIG. 1 is a schematic perspective view of a vehicle body structure showing an embodiment of the present invention. FIG. 2 is a perspective view of the lower part of the pillar and the front part of the side sill as viewed from the indoor side. FIG. 3 is a cross-sectional view of the lower structure of the vehicle body in the rear view. FIG. 4 is a sectional view of the vehicle lower structure in plan view. FIG. 5 is a left side sectional view of the vehicle lower structure. FIG. 6 is a cross-sectional view in rear view showing a modification. FIG. 7 is a cross-sectional view in rear view showing a modification.

  1 to 5 show an embodiment of the present invention, FIG. 1 is a schematic perspective view of a vehicle body structure showing an embodiment of the present invention, and FIG. 2 is a view of a lower part of a pillar and a front part of a side sill from an indoor side. 3 is a rear sectional view of the vehicle body lower structure, FIG. 4 is a sectional view of the vehicle lower structure in plan view, and FIG. 5 is a left sectional view of the vehicle lower structure.

  As shown in FIG. 1, the vehicle body 1 is configured by, for example, collecting panel-like members obtained by press-molding steel plates and joining them by spot welding or the like. The vehicle body 1 includes a pair of left and right front pillars 10 extending in the up-down direction, and side sills 20 connected to the front pillars 10 on the front end side and extending in the front-rear direction. The vehicle body 1 also includes a floor panel 30 that forms the floor of the vehicle, a toe board 40 that extends vertically on the front end side of the floor panel 30, and a pair of left and right side frames 50 that extend in the front-rear direction on the vehicle front side. ing. In addition, the vehicle body 1 includes a stiffening panel 41 that forms a closed section together with the toe board 40 from the outer side in the vehicle width direction of each side frame 50 to the front end side of each side sill 20.

  The front pillar 10 is formed such that a cross section in plan view is a closed cross section. The front pillar 10 has a pillar inner panel 11 positioned on the inner side in the vehicle width direction and a pillar outer panel 12 positioned on the outer side in the vehicle width direction in a cross section in plan view. As shown in FIG. 2, the pillar outer panel 11 includes a panel main body 11a extending in the front-rear direction, a front surface portion (not shown) extending outward in the vehicle width direction from the front end side of the panel main body 11a, and a front surface. And a front flange 11c extending forward from the portion. As shown in FIG. 3, the pillar outer panel 12 includes a panel main body 12 a extending in the front-rear direction, a front surface portion (not shown) extending inward in the vehicle width direction from the front end side of the panel main body, and a front surface portion. And a front flange (not shown) extending forward.

  As shown in FIG. 3, the side sill 20 is formed so that the cross section in front view is a closed cross section. The side sill 20 has a sill inner panel 21 located on the inner side in the vehicle width direction and a sill outer panel 22 located on the outer side in the vehicle width direction in a cross section in a front view. The sill inner panel 21 includes a panel main body 21a extending vertically in a cross-section in a front view, an upper surface portion 21b extending outward from the upper end side of the panel main body 21a in the vehicle width direction, and an upper flange 21c extending upward from the upper surface portion 21b. The lower surface portion 21d extends outward from the lower end side of the panel body 21a in the vehicle width direction, and the lower flange 21e extends downward from the lower surface portion 21d. Further, the sill outer panel 22 includes a panel body 22a extending vertically in a cross-section in a front view, an upper surface part 22b extending inward in the vehicle width direction from the upper end side of the panel body 22a, and an upper flange 22c extending upward from the upper surface part 22b. And a lower surface portion 22d extending inward in the vehicle width direction from the lower end side of the panel body 22a, and a lower flange 22e extending downward from the lower surface portion 22d. The sill inner panel 21 and the sill outer panel 22 are joined by spot welding at the upper flanges 21a and 22a and the lower flanges 21e and 22e.

  In the present embodiment, the side sill 20 includes a reinforcing panel 23 that is disposed between the sill inner panel 21 and the sill outer panel 22 and divides the closed cross section in the vehicle width direction. The reinforcing panel 23 extends vertically in a cross-section in a front view, is sandwiched between the upper flanges 21a and 22a and the lower flanges 21e and 22e, and is joined thereto by spot welding.

  Further, the side sill 20 is configured so that the strength on the front end side is lower than that on the rear side with respect to the input from the front. In the present embodiment, the strength of the front end side of the sill outer panel 22 is configured to be lower than that of the rear side, so that the strength of the front end side of the side sill 20 as a whole is lower than that of the rear side. Specifically, as shown in FIG. 4, the sill outer panel 22 includes a front end side low strength portion 22i made of a relatively low strength material and a rear side high strength portion 22j made of a relatively high strength material. Have. The strength change in the front-rear direction of the sill outer panel 22 can be realized not only by the change of the material but also by the change of the plate thickness.

  As shown in FIG. 2, the lower end portion of the front pillar 10 covers the front end portion of the side sill 20 from the outside in the vehicle width direction. That is, the pillar outer panel 12 is disposed outside the sill outer panel 22 in the vehicle width direction, and the pillar inner panel 11 is disposed inside the sill inner panel 21 in the vehicle width direction.

  In the pillar inner panel 11 and the pillar outer panel 12, the panel main bodies 11a and 12a are joined to the panel main bodies 21a and 22a of the sill inner panel 21 and the sill outer panel 22 by spot welding. Further, as shown in FIG. 3, the pillar inner panel 11 has a protruding portion 13 that protrudes outward in the vehicle width direction from the panel body 11 a and is fixed to the upper flanges 21 a and 22 a of the side sill 20 by bolts 14.

  As shown in FIG. 2, the protrusion 13 has a flat surface 13a extending along the upper flanges 21a and 22a, and a connection surface 13b connecting the flat surface 13a and the panel body 12a. In the present embodiment, the connection surface 13 b is formed on the upper side, the front side, the rear side, and the lower side of the flat surface 13 a, and the lower connection surface 13 b is formed along the upper surface 22 b of the side sill 20.

  Moreover, as shown in FIG. 4, the front end of the side sill 20 is closed. The panel main body 21a of the sill inner panel 21 extends in the front-rear section in a plan view, and the sill inner panel 21 includes a front portion 21g extending from the front end side of the panel main body 21a to the vehicle width direction outer side in a plan view. A front flange 21h extending forward from the front surface portion 21g. In addition, the panel body 22a of the sill outer panel 22 extends forward and backward in a cross section in plan view, and the sill outer panel 22 includes a front surface portion 22g extending inward in the vehicle width direction from the front end side of the panel main body 22a in a cross section in plan view. A front flange 22h extending forward from the front surface portion 22g. The front end of each side sill 20 is closed by joining the sill inner panel 21 and the sill outer panel 22 by spot welding at the respective front flanges 21h, 22h. A stiffening panel 41 is connected to the front end of each side sill 20.

  As shown in FIG. 5, the stiffening panel 41 forms a closed cross section with the toe board 40 and extends between the front side frame 50 and the side sill 20 in the vehicle width direction. In the present embodiment, the stiffening panel 41 includes a front surface portion 41a, a bottom surface portion 41b extending backward from the lower end of the front surface portion 41a, and a back surface portion 41c extending upward from the rear end of the bottom surface portion 41b. Yes.

  In the present embodiment, as shown in FIG. 4, the stiffening panel 41 has a front section 41a extending in the vehicle width direction and a front side from the outer end in the vehicle width direction of the front section 41a in a cross-sectional view in plan view. And an inner flange 41c extending forward from the inner end in the vehicle width direction of the front surface portion 41a. The front part 41 is connected to the front part 21g of the sill inner panel 21 by spot welding. The outer flange 41b is connected to the front flange 21h by spot welding. The inner flange 41c is connected to the side frame 50 by spot welding.

  According to the vehicle body structure configured as described above, the pillar inner panel 11 is connected to the relatively strong upper flanges 21 c and 22 c on the side sill 20, thereby accurately loading between the front pillar 10 and the side sill 20. Can be transmitted. In particular, since the pillar inner panel 11 is connected to the side sill 20, the load can be efficiently transmitted between the front pillar 10 and the side sill 20 as compared to the case where the pillar outer panel 12 is connected. Here, since the pillar outer panel 12 and the pillar inner panel 11 are arranged apart from the side sill 20 in addition to the protruding part 13 protruding toward the side sill 20, the cross section in a plan view of the lower part of the front pillar 10 is taken in the vehicle width direction. Can be large. Thereby, while suppressing the bending deformation of the front pillar 10, the rigidity of the whole vehicle body can be improved.

  Further, since the front end of the side sill 20 is closed, the rigidity and strength of the front end side of the side sill 20 can be improved, and the load at the time of the small overlap collision can be accurately transmitted to the side sill 20 to be more accurate by the side sill 20. Energy absorption can be achieved. Thereby, at the time of a small overlap collision, the amount of intrusion into the vehicle compartment such as tires can be suppressed.

  Further, since the stiffening panel 41 and the sill inner panel 21 are connected, the strength of the side sill 20 on the inner side in the vehicle width direction is improved. At the time of the small overlap collision, the front wheel comes into contact with the side sill 20 from the outside in the vehicle width direction first. Here, since the strength of the sill outer panel 22 side is relatively low with respect to the sill inner panel 21 side, the sill outer panel 22 side is smoothly deformed at the time of collision, so that energy absorption is achieved. This also suppresses the intrusion amount of tires and the like into the vehicle room at the time of the small overlap collision.

  Further, since the strength of the front end side is lower than that of the rear side with respect to the input from the front, the side sill 20 is configured to absorb energy by deforming the front end of the side sill 20 at the time of a small overlap collision. In the present embodiment, since the strength of the front end side of the sill outer panel 22 is configured to be lower than that of the rear side, energy absorption is achieved by deforming the front end side of the sill outer panel 22. As described above, at the time of the small overlap collision, the front wheel comes into contact with the side sill first from the outside in the vehicle width direction, so that the sill outer panel 22 side is smoothly deformed. This also suppresses the intrusion amount of tires and the like into the vehicle room at the time of the small overlap collision.

  In the above-described embodiment, the protrusion 13 is formed on the front pillar 10 and connected to the side sill 20. However, for example, the protrusion may be formed on the second pillar and connected to the side sill. In this case, the bending deformation of the second pillar can be suppressed and the rigidity of the entire vehicle body can be improved.

  Moreover, in the said embodiment, although what formed the protrusion part 13 in the pillar inner panel 11 was shown, you may form a protrusion part in a pillar outer panel, and it may connect with a side sill, or a protrusion part may be provided in both panels. It may be formed and connected to the side sill. Moreover, in the said embodiment, although the closed cross section in the front view of the side sill 20 showed what changes little in the front-back direction, for example, as shown in FIG. 6, the cross section of the front end side of a side sill is shown by upper flange 121c, 122c. , 123c may be configured to be closer to the protrusion 113.

In the vehicle body structure of FIG. 6, the sill inner panel 121 includes a panel main body 121 a extending vertically in a cross-section in a front view, an upper surface portion 121 b extending outward from the upper end side of the panel main body 121 a, and an upper surface portion 121 b. It has an upper flange 121c that extends upward, a lower surface portion 121d that extends outward from the lower end side of the panel main body 121a in the vehicle width direction, and a lower flange 121e that extends downward from the lower surface portion 121d. In the sill inner panel 121, the upper surface 121b is formed shorter in the vehicle width direction than the lower surface portion 121d only on the front end side, and the upper flange 121c is on the inner side in the vehicle width direction than the lower flange 121e. In addition, the sill outer panel 122 includes a panel main body 122a that extends vertically in a cross-section in a front view, an upper surface portion 122b that extends inward in the vehicle width direction from the upper end side of the panel main body 122a, and an upper flange 122c that extends upward from the upper surface portion 122b. And a lower surface portion 122d extending inward in the vehicle width direction from the lower end side of the panel body 122a, and a lower flange 122e extending downward from the lower surface portion 122d. As for the sill outer panel 122, the upper surface 122b is formed longer in the vehicle width direction than the lower surface portion 122d only on the front end side, and the upper flange 122c is on the inner side in the vehicle width direction than the lower flange 122e.
In addition, the reinforcing panel 123 includes a panel main body 123a that extends vertically in a cross section in a front view, an upper surface part 123b that extends inward in the vehicle width direction from the upper end side of the panel main body 123a, and an upper flange 123c that extends upward from the upper surface part 123b. And have. The lower end of the panel body 123a is sandwiched between the lower flanges 121e and 122e of the sill inner panel 121 and the sill outer panel 122, and is joined to them by spot welding. The upper flange 123c of the reinforcing panel 123 is sandwiched between the upper flanges 121a and 122a of the sill inner panel 121 and the sill outer panel 122, and is joined to them by spot welding.

  Further, for example, as shown in FIG. 7, at least one of the pillar outer panel 22 and the pillar inner panel 21 and the upper flanges 21 c and 22 c of the side sill 20 are interposed with a collar member 213 interposed, without forming a protruding portion. You may fasten. In the vehicle body structure in FIG. 7, a cylindrical collar member 213 is interposed between the upper flanges 21 c and 22 c of the side sill 20 and the pillar inner panel 21, and the upper flanges 21 c and 22 c, the collar member 213 and the pillar inner panel 21 are inserted. The side sill 20 and the puller inner panel 21 are fastened by the bolt 14. This can also suppress the bending deformation of the pillar and improve the rigidity of the entire vehicle body. The upper flanges 21c and 22c may be fastened to the pillar outer panel 12, or may be fastened to both the pillar inner panel 11 and the pillar outer panel 12.

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

DESCRIPTION OF SYMBOLS 1 Car body 10 Front pillar 11 Pillar inner panel 12 Pillar outer panel 13 Protruding part 14 Bolt 20 Side sill 21 Sill inner panel 21c Upper flange 22 Sill outer panel 22c Upper flange 22i Low strength part 22j High strength part 40 Toe board 41 Stiffening panel 113 Protruding part 121 Sill inner panel 121c Upper flange 122 Sill outer panel 122c Upper flange 213 Color member

Claims (7)

A pillar having a pillar outer panel and a pillar inner panel and extending in the vertical direction;
It has a sill outer panel and a sill inner panel that are joined to each other by a flange, includes a side sill that extends in the vehicle front-rear direction while forming a closed cross-section in a front view, and is connected to the lower end side of the pillar,
The pillar outer panel is disposed on the outer side in the vehicle width direction from the sill outer panel,
The pillar inner panel is arranged on the inner side in the vehicle width direction than the sill inner panel,
A vehicle body structure in which at least one of the pillar outer panel and the pillar inner panel protrudes toward the side sill and forms a protrusion connected to the flange.   The vehicle body structure according to claim 1, wherein the pillar is a front pillar connected to a front end side of the side sill.   The vehicle body structure according to claim 2, wherein a front end of the side sill is closed. A toe board that partitions the passenger compartment
With the toe board, it has a closed cross section in a side view, and includes a stiffening panel extending in the vehicle width direction,
The vehicle body structure according to claim 2 or 3, wherein an outer end in the vehicle width direction of the stiffening panel is connected to a front end of the sill inner panel.   The vehicle body structure according to any one of claims 2 to 4, wherein the side sill is configured such that the front end side has lower strength than the rear side with respect to input from the front.   The vehicle body structure according to claim 5, wherein the side sill is configured such that the strength of the front end side of the sill outer panel is lower than that of the rear side. A pillar having a pillar outer panel and a pillar inner panel and extending in the vertical direction;
A sill outer panel and a sill inner panel that are joined to each other by a flange portion, and extending in the vehicle front-rear direction, including a side sill connected to the lower end side of the pillar,
The pillar outer panel is disposed on the outer side in the vehicle width direction from the sill outer panel,
The pillar inner panel is arranged on the inner side in the vehicle width direction than the sill inner panel,
A vehicle body structure in which at least one of the pillar outer panel and the pillar inner panel and the flange of the side sill are fastened with a collar member interposed therebetween.

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