JP6549758B2 - Body structure - Google Patents

Description

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

  As a vehicle body structure of the connection part vicinity of a pillar and a side sill, what was described, for example 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 panel of the front pillar is connected to the body portion of the relatively fragile panel at the side sill. As a result, the load can not be properly 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, when one panel of the front pillar is aligned with the flange of the side sill, the inner panel and the outer panel approach in the vehicle width direction, and as a result, the closed cross section of the front pillar becomes smaller and the front pillar bends and deforms. It will be easier.

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

  In order to achieve the above object, according to the present invention, a pillar having a pillar outer panel and a pillar inner panel and having a pillar extending in the vertical direction and a sill outer panel and a sill inner panel joined together by a flange, as viewed from the front A side sill extending in the vehicle longitudinal direction while forming a closed cross section and connected to the lower end side of the pillar, the pillar outer panel is disposed on the vehicle width direction outer side than the sill outer panel, and the pillar inner panel is A vehicle body structure is provided, which is disposed on the inner side in the vehicle width direction than the sill inner panel, and at least one of the pillar outer panel and the pillar inner panel protrudes toward the side sill and forms a projection connected to the flange. .

  According to this vehicle body structure, since at least one of the pillar outer panel and the pillar inner panel is connected to the relatively high strength flange at the side sill, the load can be properly transmitted between the pillar and the side sill. Here, since the pillar outer panel and the pillar inner panel are disposed apart from the side sill except for the protruding portion projecting toward the side sill, the cross section in plan view of the lower portion of the pillar can be enlarged in the vehicle width direction. Thereby, while suppressing the bending deformation of a pillar, the rigidity of the whole 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 the bending deformation of the front pillar and to improve the rigidity of the entire vehicle body.

  In the vehicle body structure, the 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 the small overlap collision can be properly transmitted to the side sill, and energy absorption can be properly achieved by the side sill. As a result, at the time of a small overlap collision, it is possible to suppress the amount of intrusion of tires and the like into the vehicle cabin.

  The vehicle body structure includes a toe board for partitioning the cabin back and forth, and a stiffening panel having a closed cross section in a side view together with the toe board and extending in the vehicle width direction, the outer end of the stiffening panel in the vehicle width direction , May be connected to the front end of the inner panel.

  According to this vehicle body structure, since the stiffening panel and the sill inner panel are connected, the strength of the side sill inside in the vehicle width direction is improved. At the time of the small overlap collision, the front wheel contacts the side sill from the outside in the vehicle width direction first. Here, since the strength of the sill outer panel side is relatively low with respect to the sill inner panel side, energy is absorbed by the smooth deformation of the sill out panel side at the time of a collision. As a result, the amount of intrusion of a tire or the like into the vehicle room at the time of a small overlap collision is suppressed.

  In the above-described 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 an input from the front.

  According to this vehicle body structure, energy is absorbed by the deformation of the front end of the side sill at the time of a small overlap collision.

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

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

  Further, according to the present invention, a pillar having a pillar outer panel and a pillar inner panel and having a pillar extending in the vertical direction and a sill outer panel and a sill inner panel joined together at a flange portion extends in the vehicle longitudinal direction. 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 than the sill outer panel, and the pillar inner panel is disposed on the inner side in the vehicle width direction than the sill inner panel; A vehicle body structure is provided in which at least one of a pillar outer panel, the pillar inner panel, and the flange of the side sill are fastened with a collar member interposed.

  According to this vehicle body structure, since at least one of the pillar outer panel and the pillar inner panel is connected to the flange of the side sill, the load can be properly transmitted between the pillar and the side sill. Here, since the pillar outer panel and the pillar inner panel are disposed apart from the side sill, the cross section of the lower portion of the pillar in a plan view can be enlarged in the vehicle width direction. Thereby, while suppressing the bending deformation of a pillar, the rigidity of the whole vehicle body can be improved.

  According to the present invention, the load can be properly transmitted between the pillar and the side sill while securing a large cross section of the lower portion of the pillar.

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 portion of the pillar and the front portion of the side sill as viewed from the indoor side. FIG. 3 is a cross-sectional view of the lower part of the vehicle body as viewed from the rear. FIG. 4 is a cross-sectional view of the vehicle lower structure in plan view. FIG. 5 is a cross-sectional view of the vehicle lower structure as viewed from the left side. FIG. 6 is a cross-sectional view in a rear view showing a modified example. FIG. 7 is a cross-sectional view in a rear view showing a modified example.

  1 to 5 show an embodiment of the present invention, and FIG. 1 is a schematic perspective view of a vehicle body structure showing an embodiment of the present invention, and FIG. 3 is a sectional view of a rear view of the lower body structure, FIG. 4 is a sectional view of the lower view of the vehicle, and FIG. 5 is a sectional view of the lower side of the vehicle.

  As shown in FIG. 1, the vehicle body 1 is configured by assembling panel-like members obtained by press-forming a steel plate, for example, 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 vertical direction, and side sills 20 connected to the front pillars 10 on the front end side and extending in the front and rear direction. The vehicle body 1 further includes a floor panel 30 forming a floor of the vehicle, a toe board 40 extending vertically on the front end side of the floor panel 30, and a pair of left and right side frames 50 extending longitudinally in the front side of the vehicle. ing. Further, the vehicle body 1 is provided with a stiffening panel 41 which forms a closed cross 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 the 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 in a cross section in plan view, and a pillar outer panel 12 positioned on the outer side in the vehicle width direction. As shown in FIG. 2, the pillar outer panel 11 has a panel main body 11 a extending in the front and rear direction in a cross section in plan view, a front face (not shown) extending outward in the vehicle width direction from the front end side of the panel main body 11 a And a front flange 11c extending forwardly from the front part. As shown in FIG. 3, the pillar outer panel 12 has a panel main body 12a extending in the front and rear direction in a cross section in plan view, a front face (not shown) extending inward in the vehicle width direction from the front end side of the panel main body, and a front face And a front flange (not shown) extending forwardly from the

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

  In the present embodiment, the side sill 20 is disposed between the sill inner panel 21 and the sill outer panel 22 and has a reinforcing panel 23 that 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 such 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, by forming the strength on the front end side of the sill outer panel 22 lower than that on the rear side, the strength on the front end side of the side sill 20 as a whole is lower than that on the rear side. Specifically, as shown in FIG. 4, the sill outer panel 22 has a front end side low strength portion 22i made of a relatively low strength material and a rear high strength portion 22j made of a relatively high strength material. And. The strength change in the front-rear direction of the sill outer panel 22 can also be realized by a change in thickness or the like in addition to a change in material.

  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 outer side in the vehicle width direction. That is, the pillar outer panel 12 is disposed on the outer side in the vehicle width direction of the sill outer panel 22, and the pillar inner panel 11 is disposed on the inner side in the vehicle width direction of the sill inner panel 21.

  In the pillar inner panel 11 and the pillar outer panel 12, the panel bodies 11 a and 12 a are joined to the panel bodies 21 a and 22 a of the sill inner panel 21 and the sil outer panel 22 by spot welding. Furthermore, as shown in FIG. 3, in the pillar inner panel 11, the projections 13 projecting outward in the vehicle width direction from the panel main body 11 a are 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 connecting 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 longitudinal direction in a cross section in plan view, and the sill inner panel 21 extends in the lateral direction from the front end side of the panel main body 21a in a cross section in plan view; And a front flange 21h extending forward from the front portion 21g. Further, the panel body 22a of the sill outer panel 22 extends in the longitudinal direction in a cross section in plan view, and the sill outer panel 22 is a front surface portion 22g extending inward in the vehicle width direction from the front end side of the panel body 22a in a cross section in plan view; And a front flange 22h extending forward from the front portion 22g. The front end of each side sill 20 is closed by joining the inner panel 21 and the outer panel 22 by spot welding at the front flanges 21 h and 22 h. 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 together with the toe board 40 and extends in the vehicle width direction between the front side frame 50 and the side sill 20. In the present embodiment, the stiffening panel 41 has a front surface 41a, a bottom surface 41b extending rearward from the lower end of the front surface 41a, and a rear surface 41c extending upward from the rear end of the bottom surface 41b. There is.

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

  According to the vehicle body structure configured as described above, by the pillar inner panel 11 being connected to the relatively strong upper flanges 21 c and 22 c at the side sill 20, the load between the front pillar 10 and the side sill 20 can be accurately adjusted. Can be transmitted. In particular, since the pillar inner panel 11 is connected to the side sill 20, load can be efficiently transmitted between the front pillar 10 and the side sill 20 as compared with the case where the pillar outer panel 12 is connected. Here, since the pillar outer panel 12 and the pillar inner panel 11 are disposed apart from the side sill 20 except for the projecting portion 13 which protrudes toward the side sill 20, the cross section of the lower portion of the front pillar 10 in the vehicle width direction Can be enlarged. Thereby, while suppressing the bending deformation of the front pillar 10, the rigidity of the whole vehicle body can be improved.

  In addition, 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 a small overlap collision can be properly transmitted to the side sill 20 and more accurate by the side sill 20 Energy absorption. As a result, at the time of a small overlap collision, it is possible to suppress the amount of intrusion of tires and the like into the vehicle cabin.

  Further, since the stiffening panel 41 and the inner panel 21 are connected, the strength of the side sill 20 in the vehicle width direction is improved. At the time of the small overlap collision, the front wheel contacts the side sill 20 first from the outside in the vehicle width direction. Here, since the strength of the sill outer panel 22 side is relatively low with respect to the sill inner panel 21 side, energy is absorbed by the smooth deformation of the sill outer panel 22 side at the time of a collision. Also in this case, the amount of intrusion of the tire or the like into the vehicle room at the time of the small overlap collision is suppressed.

  Further, since the strength of the front end side of the side sill 20 is configured to be lower than that of the input from the front, energy absorption is achieved by deformation of the front end of the side sill 20 at the time of a small overlap collision. In the present embodiment, since the strength on the front end side of the sill outer panel 22 is configured to be lower than that on the rear side, energy is absorbed by the deformation of the front end side of the sill outer panel 22. As described above, at the time of the small overlap collision, the front wheel contacts the side sill first from the outside in the vehicle width direction, so the side of the sill outer panel 22 is deformed smoothly. Also in this case, the amount of intrusion of the tire or the like into the vehicle room at the time of the small overlap collision is suppressed.

  In the embodiment described above, 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 to connect to the side sill. In this case, while suppressing the bending deformation of the second pillar, the rigidity of the entire vehicle body can be improved.

  Moreover, in the said embodiment, what showed the protrusion part 13 in the pillar inner panel 11 was shown, but a protrusion part may be formed in a pillar outer panel, and it may connect with a side sill, and a protrusion part will be shown in both panels. You may form and connect with a side sill. Further, in the embodiment, the closed cross section of the side sill 20 in the front view hardly changes in the front and rear direction, but as shown in FIG. 6, for example, the cross section on the front end side of the side sill is the upper flanges 121c and 122c. , 123c may be closer to the protrusion 113.

In the vehicle body structure of FIG. 6, the sill inner panel 121 extends from the top end side of the panel main body 121a to the vehicle width direction outside from the upper end side of the panel main body 121a from the upper end side It has an upper flange 121c extending upward, a lower surface 121d extending outward in the vehicle width direction from the lower end side of the panel main body 121a, and a lower flange 121e extending downward from the lower surface 121d. The upper surface portion 121b of the inner sill panel 121 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 inner than the lower flange 121e in the vehicle width direction. Further, the sill outer panel 122 has a panel main body 122a extending vertically and a top surface portion 122b extending inward in the vehicle width direction from the upper end side of the panel main body 122a, and an upper flange 122c extending upward from the upper surface portion 122b in a cross section front view. And a lower surface 122d extending inward in the vehicle width direction from the lower end side of the panel main body 122a, and a lower flange 122e extending downward from the lower surface 122d. The upper surface portion 122b of the sill outer panel 122 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 inner than the lower flange 122e in the vehicle width direction.
Further, the reinforcing panel 123 has a panel main body 123a extending vertically and a top surface portion 123b extending inward in the vehicle width direction from the upper end side of the panel main body 123a, and an upper flange 123c extending upward from the upper surface portion 123b in a cross section in front view. And. The lower end of the panel main body 123a is sandwiched by the lower side flanges 121e and 122e of the inner and outer panels 121 and 122, and is joined thereto by spot welding. Further, the upper flange 123c of the reinforcing panel 123 is sandwiched between the upper inner flanges 121a and 122a of the inner and outer panels 121 and 122, and is joined thereto by spot welding.

  Furthermore, 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 the collar member 213 without forming the protrusion. You may conclude it. 7, the cylindrical collar member 213 is interposed between the upper flanges 21c and 22c of the side sill 20 and the pillar inner panel 21, and the upper flanges 21c and 22c, the collar member 213 and the pillar inner panel 21 are inserted. The side sill 20 and the plainer panel 21 are fastened by the bolt 14. Also by this, while suppressing the bending deformation of a pillar, the rigidity of the whole vehicle body can be improved. 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.

  As mentioned above, although embodiment of this invention was described, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

Reference Signs List 1 vehicle body 10 front pillar 11 pillar inner panel 12 pillar outer panel 13 projecting portion 14 bolt 20 side sill 21 sill inner panel 21 c upper flange 22 sil outer panel 22 c upper flange 22i low strength portion 22 j high strength portion 40 toe board 41 stiffening panel 113 protruding portion 121 Shil inner panel 121c upper flange 122 sil outer panel 122c upper flange 213 collar member

Claims (6)

A vertically extending pillar having a pillar outer panel and a pillar inner panel;
And a side sill having a sill outer panel and a sill inner panel joined together at a flange portion and extending in the longitudinal direction of the vehicle and connected to the lower end side of the pillar,
The pillar outer panel is disposed on the outer side in the vehicle width direction than the sill outer panel.
The pillar inner panel is disposed 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.   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. The toe board that divides the cabin back and forth,
And a stiffening panel extending in the vehicle width direction and having a closed cross section in side view together with the toe board,
The vehicle body structure according to claim 2 or 3, wherein a vehicle width direction outer end 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 strength on the front end side is lower than that on the rear side with respect to an input from the front.   The vehicle body structure according to claim 5, wherein the side sill is configured such that the strength on the front end side of the sill outer panel is lower than that on the rear side.

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