JP2012111247A - Side sill structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side sill structure of a vehicle, which can enhance torsional rigidity of a vehicle body while suppressing an increase in weight.SOLUTION: In the side sill structure of the vehicle, reinforcing bodies for reinforcing a side sill 30 are incorporated in the side sill 30 which is elongated in the longitudinal direction of the vehicle body in the lower section of the vehicle body. The side sill structure of the vehicle includes the first and second reinforcing bodies 50 and 60 which are disposed in the side sill 30 near a part 23 for connection to a center pillar 20 on the vehicle body front and rear sides of the part 23, respectively, and the third reinforcing body 40 which is disposed in the side sill 30 near a part 18 for connection to a front pillar 15 on the vehicle body rear side of the part 18. The first, second and third reinforcing bodies 50, 60 and 40 are each provided with a bulkhead part for partitioning the inside of the side sill 30 in the longitudinal direction of the vehicle body.

Description

  The present invention relates to a vehicle side sill structure in which a reinforcing body for reinforcing the side sill is incorporated in a side sill that extends in the longitudinal direction of the vehicle body at a lower part of the vehicle body.

  In vehicles such as automobiles, side sills extending in the longitudinal direction of the vehicle body are arranged on the left and right sides at the lower part of the vehicle body, and these side sills are generally located on the inner side in the vehicle width direction and on the outer side in the vehicle width direction. The side sill outer is formed into a closed cross-sectional shape. Moreover, what attached the reinforcement body for reinforcing this side sill to the side sill is generally known.

  For example, Patent Document 1 discloses a structure in which a reinforcing body is disposed in a coupling portion with a pillar corresponding to the working opening in a side sill in which a working opening for coupling with a pillar is formed. ing. Further, for example, in Patent Document 2, a first reinforcing body having a wall surface on the rear side of the vehicle body in a side sill at a coupling portion with the front pillar, and a wall surface facing the wall surface of the first reinforcing body are arranged on the vehicle front side. And a second reinforcing body having a space between them are disclosed.

JP 2000-085634 A JP 2009-179217 A

  However, as disclosed in Patent Document 1 and Patent Document 2, when a reinforcing body is attached and reinforced inside a side sill formed in a closed cross-sectional shape, the reinforcing body causes an increase in weight. In a side sill, how to reinforce while suppressing an increase in weight is an important issue.

  In addition, in vehicles such as automobiles, from the viewpoint of improving handling stability and riding comfort, a torsional load that is input to the vehicle body from a mounting portion between the suspension device that suspends the wheels and the vehicle body during traveling is transmitted to the side sill. Even when a bending moment is generated in the side sill, it is required to increase the torsional rigidity of the vehicle body by preventing the side sill from being bent and deformed.

  The thing of the said patent document 1 can raise the cross-sectional rigidity at the time of a side collision in the coupling | bond part with the pillar of a side sill, and the thing of the said patent document 2 is an axial direction of a side sill at the time of a front collision. Although the impact absorption performance can be improved by transmitting a collision load, the ones described in Patent Document 1 and Patent Document 2 are not necessarily sufficient for suppressing the bending deformation of the entire side sill accompanying the torsion of the vehicle body. Instead, further improvements to the torsional rigidity of the vehicle body are desired.

  Accordingly, the present invention provides a vehicle side sill structure that can suppress the bending deformation of the side sill when a torsional load is applied to the vehicle body, and can improve the torsional rigidity of the vehicle body while suppressing an increase in weight. With the goal.

  For this reason, the invention according to claim 1 of the present application is a vehicle side sill structure in which a reinforcing body for reinforcing the side sill is incorporated in a side sill extending in the longitudinal direction of the vehicle body at the lower part of the vehicle body. The joint portion on the vehicle body rear side of the joint portion between the front pillar and the first and second reinforcement bodies disposed in the side sill in the vicinity of the joint portion on the vehicle body front side and vehicle body rear side A third reinforcing body disposed in the side sill in the vicinity, and each of the first, second, and third reinforcing bodies has a partition portion that divides the inside of the side sill in the longitudinal direction of the vehicle body. It is characterized by that.

  Further, the invention according to claim 2 of the present application is the invention according to claim 1, further comprising a partition wall portion extending in the vehicle width direction, and a fourth portion disposed in the side sill at the joint portion with the front pillar. A reinforcing body is provided, and the fourth reinforcing body extends from the front end portion of the side sill to the vehicle body rear side of the connecting portion with the front pillar.

  Further, the invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the center pillar is located on the inner side in the vehicle width direction and on the outer side in the vehicle width direction. A center pillar outer, and the center pillar inner extends in the side sill so as to divide the inside of the side sill in a vehicle width direction at a joint portion with the side sill. In the side sill, disposed on the vehicle body front side of the front end portion of the center pillar inner, and the second reinforcing body is disposed in the side sill on the vehicle body rear side of the rear end portion of the center pillar inner, The front pillar includes a front pillar inner located on the inner side in the vehicle width direction and a front pillar outer located on the outer side in the vehicle width direction. The side sill extends in the side sill so as to divide the inside of the side sill in the vehicle width direction, and the third reinforcing body is located in the side sill more than the rear end of the front pillar inner. It is arranged on the rear side.

  Still further, the invention according to claim 4 of the present application is the invention according to any one of claims 1 to 3, wherein the fourth reinforcing body is disposed in the side sill at the joint portion with the front pillar. The vehicle is characterized in that it is arranged on the outer side in the vehicle width direction inside the side sill divided in the vehicle width direction by the front pillar inner.

  Furthermore, the invention according to claim 5 of the present application is the invention according to any one of claims 1 to 4, wherein the invention is disposed in the side sill at the joint portion with the cross member extending in the vehicle width direction. It is further characterized by further comprising a fifth reinforcing body having a partition wall that divides the inside of the side sill in the longitudinal direction of the vehicle body.

  According to the side sill structure of the vehicle according to claim 1 of the present application, the first and second reinforcing bodies are disposed in the vicinity of the coupling portion on the vehicle body front side and the vehicle body rear side of the coupling portion with the center pillar in the side sill. A third reinforcing body is disposed in the vicinity of the joint portion on the vehicle body rear side of the joint portion, and a partition portion for separating the inside of the side sill in the front-rear direction of the vehicle body is provided on these reinforcement bodies. The side sill can be effectively reinforced by the partition wall in the vicinity of the joint portion of the side sill and the center pillar where the cross-section deformation is likely to occur due to the bending moment generated when the load is applied. When this occurs, bending deformation of the side sill can be suppressed, and the torsional rigidity of the vehicle body can be improved while suppressing an increase in weight. Further, by suppressing the increase in weight, the fuel efficiency is improved, and the energy saving effect can be enhanced.

  According to the invention of claim 2 of the present application, the fourth reinforcing body having the partition wall portion extending in the vehicle width direction and disposed in the side sill at the coupling portion with the front pillar is provided. The reinforcing body of the side sill extends from the front end portion of the side sill to the vehicle body rear side of the coupling portion with the front pillar, so that the side sill can be effectively reinforced by the partition portion at the coupling portion with the front pillar of the side sill, The said effect can be show | played more effectively. Even when a so-called nose dive occurs in which the front part of the vehicle body sinks downward and the rear part of the vehicle body floats upward during deceleration, bending deformation of the side sill at the joint with the front pillar can be effectively suppressed.

  Further, according to the invention according to claim 3 of the present application, the first reinforcing body is disposed in the front side of the vehicle body from the front end portion of the center pillar inner in the side sill, and the second reinforcing body is disposed in the side sill. The third pillar is disposed on the vehicle rear side of the rear end portion of the center pillar inner, and the third reinforcing member is disposed on the vehicle rear side of the rear end portion of the front pillar inner in the side sill. Can be realized more specifically.

  Still further, according to the invention according to claim 4 of the present application, the fourth reinforcing body has a vehicle width inside the side sill divided in the vehicle width direction by the front pillar inner in the side sill in the coupling portion with the front pillar. By being arranged on the outer side in the direction, it is possible to effectively suppress the bending deformation of the side sill when a load is input to the side sill from the outer side in the vehicle width direction while suppressing an increase in weight. , The effect can be achieved more effectively.

  Still further, according to the invention of claim 5 of the present application, a fifth partition having a partition that is disposed in the side sill at the joint portion with the cross member extending in the vehicle width direction and divides the inside of the side sill in the longitudinal direction of the vehicle body. By further including the reinforcing body, it is possible to more effectively suppress the bending deformation of the side sill, and it is possible to achieve the above effect more effectively. When a load is input to the side sill from the outside in the vehicle width direction, the load input to the side sill can be transmitted and distributed to the cross member through the fifth reinforcing body, and the bending deformation of the side sill is further suppressed. be able to.

It is a side view which shows roughly the vehicle body provided with the side sill to which the side sill structure which concerns on embodiment of this invention is applied. It is a bottom view which shows the principal part of the said vehicle body roughly. It is a perspective view which shows the side sill of the said vehicle body. It is a disassembled perspective view of the side sill shown in FIG. It is sectional drawing along the Y5-Y5 line | wire in FIG. FIG. 4 is a sectional view taken along line Y6-Y6 in FIG. It is a perspective view which shows the reinforcement body incorporated in the coupling | bond part vicinity with the front pillar of the side sill shown in FIG. It is the figure which cut | disconnected the reinforcement body shown in FIG. 7 in the cross section along the Y8a-Y8a line and the Y8b-Y8b line. It is sectional drawing of the side sill along the Y9-Y9 line | wire in FIG. It is sectional drawing of the side sill along the Y10-Y10 line | wire in FIG. It is sectional drawing of the side sill along the Y11-Y11 line | wire in FIG. It is a perspective view which expands and shows the principal part of the side sill shown in FIG. It is a perspective view which shows the reinforcement body incorporated in the coupling | bond part vicinity with the center pillar of the side sill shown in FIG. It is sectional drawing of the side sill along the Y14a-Y14a line in FIG. 12, and the Y14b-Y14b line. It is a principal part enlarged view which expands and shows the principal part of the side sill shown in FIG. FIG. 16 is a cross-sectional view taken along line Y16a-Y16a and line Y16b-Y16b in FIG. FIG. 16 is a cross-sectional view taken along line Y17a-Y17a and line Y17b-Y17b in FIG. It is explanatory drawing for demonstrating the arrangement | sequence of the convex part of the reinforcement body attached inside the corner | angular part between the outer surface part and lower surface part of a side sill.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, terms that mean a specific direction such as “up”, “down”, “right”, “left” and other terms including those terms are used. In order to facilitate understanding of the referenced invention, the technical scope of the present invention is not limited by the meaning of these terms.

  The inventors of the present application are able to suppress the bending deformation of the side sill when a torsional load is applied to the vehicle body, and in developing a vehicle side sill structure that can improve the torsional rigidity of the vehicle body while suppressing an increase in weight, First, the cross-sectional deformation generated in the side sill when a torsional load is applied to the vehicle body provided with the side sill was analyzed.

  From the above analysis results, when a torsional load is applied to the vehicle body, a bending moment is generated in the side sill so that the rotation axis of the bending moment is in the vehicle width direction. It has been found that the cross-sectional deformation increases in the vicinity of the joint with the pillar. From this analysis result, by arranging a reinforcing body in the side sill in the vicinity of the coupling portion with the front pillar and in the vicinity of the coupling portion with the center pillar, the bending deformation of the side sill is suppressed while suppressing an increase in weight. It is considered that the torsional rigidity can be improved.

Hereinafter, a side sill structure of a vehicle according to an embodiment of the present invention will be described.
FIG. 1 is a side view schematically showing a vehicle body provided with a side sill to which a side sill structure according to an embodiment of the present invention is applied, FIG. 2 is a bottom view schematically showing a main part of the vehicle body, and FIG. 4 is an exploded perspective view of the side sill shown in FIG. 3, FIG. 5 is a sectional view taken along line Y5-Y5 in FIG. 3, and FIG. 6 is Y6-Y6 in FIG. It is sectional drawing along a line. In addition, in FIG. 4, the reinforcement body incorporated in the side sill is abbreviate | omitted and shown.

  As shown in FIGS. 1 and 2, a vehicle body 1 having a side sill to which a vehicle side sill structure according to an embodiment of the present invention is applied is a vehicle body of a four-door type passenger car, and a vehicle body floor constituting the bottom surface of the vehicle body. A portion 2 and a vehicle body side surface portion 10 constituting the side surface of the vehicle body are provided. In the present embodiment, the vehicle body side surface portion 10 on the left side of the vehicle body is described, but the vehicle body side surface portion on the right side of the vehicle body is configured in the same manner.

  The vehicle body floor portion 2 includes a plate-like floor panel 3, and the first cross member 4, the second cross member 5, and the third cross are formed on the floor panel 3 from the front side of the vehicle body extending in the vehicle width direction. A member 6 is provided. Each of these cross members 4, 5, 6 is coupled to the side sill 30.

  The vehicle body side surface portion 10 is positioned on the vehicle body front side of the front door opening portion 12 in the vehicle body front-rear direction with the roof side rail 11 extending in the vehicle body front-rear direction at the upper portion of the vehicle body, the side sill 30 extending in the vehicle body front-rear direction at the lower portion of the vehicle body. A front pillar 15 that extends, a center pillar 20 that is positioned between the front and rear door openings 12 and 13 and extends in the vertical direction of the vehicle body; and a rear pillar 25 that is positioned on the rear side of the vehicle body of the rear door opening 13 and includes a side sill. A front pillar 15, a center pillar 20, and a rear pillar 25 are coupled to 30.

  The side sill 30 is also coupled with three cross members 4, 5, 6, and the first cross member 4 is coupled at a substantially intermediate position between the front pillar 15 and the center pillar 20 in the longitudinal direction of the vehicle body. The member 5 is coupled at substantially the same position as the center pillar 20 in the longitudinal direction of the vehicle body, and the third cross member 6 is coupled at a substantially intermediate position between the center pillar 20 and the rear pillar 25 in the longitudinal direction of the vehicle body.

  As will be described later, in the side sill 30 according to the present embodiment, reinforcing bodies 40, 50, 60 for reinforcing the side sill 30 are built in the vicinity of the connecting portion 18 with the front pillar 15 and in the vicinity of the connecting portion 23 with the center pillar 20. The reinforcing body 40 built in the vicinity of the joint 18 with the front pillar 15 extends to the front end of the side sill 30 and is also built into the joint 18 with the front pillar 15. Further, the side sill 30 includes reinforcing members 70, 90, 80 for reinforcing the side sill 30 at the joint portions 7, 8, 9 with the cross members 4, 5, 6.

  FIG. 7 is a perspective view showing a reinforcing body built in the vicinity of the coupling portion of the side sill shown in FIG. 3 with the front pillar, and FIG. 8 shows the reinforcing body shown in FIG. 7 along the lines Y8a-Y8a and Y8b-Y8b. FIG. 8A is a cross-sectional view taken along the line Y8a-Y8a, FIG. 8B is a cross-sectional view taken along the line Y8b-Y8b, and FIG. Is a cross-sectional view of the side sill along line Y9-Y9 in FIG. 3, FIG. 10 is a cross-sectional view of the side sill along line Y10-Y10 in FIG. 3, and FIG. 11 is along the line Y11-Y11 in FIG. It is sectional drawing of a side sill.

  As shown in FIG. 9, the side sill 30 is located on the inner side in the vehicle width direction, forms a part of the inner surface of the vehicle body and extends in the vehicle longitudinal direction, and is located on the outer side in the vehicle width direction. A side sill outer 32 that constitutes a part of the outer surface of the vehicle body and extends in the longitudinal direction of the vehicle body is formed in a closed cross-sectional shape.

  Specifically, the side sill inner 31 includes an upper surface portion 31a extending in a substantially horizontal direction, a lower surface portion 31b facing the upper surface portion 31a and positioned below the upper surface portion 31a, extending in a substantially horizontal direction, and a lower surface portion 31b. And a side surface portion 31c extending in a substantially vertical direction to the upper surface portion 31a. The side surface portion 31c bulges inwardly in the vehicle width direction (the vehicle interior on the left side in FIG. 9).

  The side sill inner 31 also has an upper flange portion 31d extending upward from the upper surface portion 31a at the outer end in the vehicle width direction of the upper surface portion 31a, and a lower surface portion at the outer end in the vehicle width direction of the lower surface portion 31b. A lower flange portion 31e extending downward from 31b is formed, and the side sill inner 31 is formed in a substantially hat-shaped cross section.

  On the other hand, the side sill outer 32 has an upper surface portion 32a extending in a substantially horizontal direction, a lower surface portion 32b facing the upper surface portion 32a and positioned below the upper surface portion 32a, extending in a substantially horizontal direction, and an upper surface portion 32a from the lower surface portion 32b. And a side surface portion 32c extending in a substantially vertical direction until the side surface portion 32c bulges outward in the vehicle width direction (the vehicle outer side which is the right side in FIG. 9).

  The side sill outer 32 also has an upper flange portion 32d extending upward from the upper surface portion 32a at the inner end in the vehicle width direction of the upper surface portion 32a, and a lower surface portion 32b at the inner end in the vehicle width direction of the lower surface portion 32b. A lower flange portion 32e extending downward is formed, and the side sill outer 32 is formed in a substantially hat-shaped cross section.

  The side sill inner 31 and the side sill outer 32 are joined to each other at the upper flange portions 31d and 32d and the lower flange portions 31e and 32e are joined to each other, whereby the side sill 30 is formed in a closed cross-sectional shape. . The side sill inner 31 and the side sill outer 32 can each be formed by pressing a metal plate material such as a steel plate.

  In the side sill 30 thus formed, a corner 30a is formed between the upper surface portion 31a and the side surface portion 31c of the side sill inner 31, and between the lower surface portion 31b and the side surface portion 31c of the side sill inner 31. A corner portion 30b is formed between the upper surface portion 32a and the side surface portion 32c of the side sill outer 32, and a corner portion 30d is formed between the lower surface portion 32b and the side surface portion 32c of the side sill outer 32. The side sill 30 is formed in a substantially rectangular closed cross section.

  As described above, in the side sill 30, the torsional load input to the vehicle body 1 is transmitted from the attachment portion of the vehicle body 1 and the suspension device that suspends the wheels during traveling, and the rotational axis M of the bending moment is in the vehicle width direction. Thus, a bending moment is generated.

  Accordingly, the side sill 30 is disposed away from each other and extends in a direction substantially perpendicular to the direction of the rotation axis M of the bending moment, the side surface portion 31c of the side sill inner 31, the side surface portion 32c of the side sill outer 32, and the side surface portions 31c and 32c. The upper surface portion 31a of the side sill inner 31, the upper surface portion 32a of the side sill outer 32, and the lower surface of the side sill inner 31 are respectively formed between the side surface portions 31c and 32c and forming the corner portions 30a, 30c and 30b, 30d. A portion 31b and a lower surface portion 32b of the side sill outer 32 are provided.

  In the following, the side surface portion 31c of the side sill inner 31 is appropriately represented as an inner side surface portion 31c that is a side surface portion on the inner side in the vehicle width direction of the side sill 30, and the side surface portion 32c of the side sill outer 32 is outward in the vehicle width direction of the side sill 30. The upper surface portion 31a of the side sill inner 31 and the upper surface portion 32a of the side sill outer 32 are represented as upper surface portions 31a and 32a of the side sill 30, and the lower surface portion 31b of the side sill inner 31 and the side sill outer 32 The lower surface portion 32b is represented as the lower surface portions 31b and 32b of the side sill 30.

  The front pillar 15 coupled to the side sill 30 transmits a torsional load input to the vehicle body 1 from a mounting portion between the suspension device for suspending the wheel and the vehicle body 1 during traveling, and transmits the load to the side sill 30. Can be communicated.

  The front pillar 15 is formed in a closed cross-sectional shape by a front pillar inner 16 positioned on the inner side of the vehicle and a front pillar outer 17 positioned on the outer side of the vehicle, and the front pillar inner 16 is connected to the side sill 30 at the joint 18 with the side sill 30. In particular, the front pillar outer 17 extends between the side sill inner 31 and the side sill outer 32 and the front pillar outer 17 is disposed outside the side sill outer 32.

  At the joint 18 between the side sill 30 and the front pillar 15, the front pillar inner 16 divides the closed cross-section S 1 inside the side sill 30 formed by the side sill inner 31 and the side sill outer 32 into the vehicle interior and vehicle exterior. Accordingly, as shown in FIG. 5, the side sill inner 31 and the front pillar inner 16 form a closed cross-sectional portion S2 having a substantially cross-sectional rectangular shape, and the side sill outer 32 and the front pillar inner 16 have a substantially cross-sectional rectangular shape. A closed cross section S3 having a shape is formed.

  As shown in FIGS. 4 and 5, the length in the vertical direction of the vehicle body is formed short on the vehicle body front side of the side surface portion 32c of the side sill outer 32. Specifically, the closed cross-section S3 includes the side sill outer 32 and The front pillar outer 17 and the front pillar inner 16 are formed in a closed cross section.

  Further, the center pillar 20 coupled to the side sill 30 is formed in a closed cross-section by a center pillar inner 21 located on the inside of the vehicle and a center pillar outer 22 located on the outside of the vehicle. The center pillar inner 21 extends in the side sill 30, specifically, between the side sill inner 31 and the side sill outer 32, and the center pillar outer 22 is provided outside the side sill outer 32. Yes.

  In the joint portion 23 between the side sill 30 and the center pillar 20, the center pillar inner 21 divides the closed cross-section S1 inside the side sill 30 formed by the side sill inner 31 and the side sill outer 32 into the vehicle inside and the vehicle outside. Accordingly, as shown in FIG. 6, the side sill inner 31 and the center pillar inner 21 form a closed cross section S4 having a substantially cross-sectional rectangular shape, and the side sill outer 32 and the center pillar inner 21 have a substantially cross-sectional rectangular shape. A closed cross section S5 having a shape is formed.

  In the present embodiment, the side sill 30 incorporates a reinforcing body 40 in the vicinity of the coupling portion 18 with the front pillar 15, and the reinforcing body 40 has an orthogonal cross section orthogonal to the longitudinal direction of the side sill 30 as shown in FIG. 8. A plate-shaped S-shaped portion 41 formed in an S-shape, a plate-shaped inverted S-shaped portion 42 formed in an inverted S-shape in an orthogonal cross section orthogonal to the longitudinal direction of the side sill 30, and the side sill 30 It has a plate-like partition wall portion 43 that extends in the vehicle width direction, which is an orthogonal cross-sectional direction orthogonal to the longitudinal direction, and divides the inside of the side sill 30 in the longitudinal direction of the vehicle body.

  As shown in FIGS. 8A and 9, the S-shaped portion 41 extends in the vehicle width direction substantially along the upper surface portions 31 a, 32 a of the side sill 30, and the upper surface portion 31 a, An upper surface joint portion 41a joined in contact with 32a, and extends downwardly from the vehicle width direction inner end portion of the upper surface joint portion 41a substantially along the inner side surface portion 31c side of the side sill 30 at the corner portion 30a. And an inner side surface joint portion (first inner side surface joint portion) 41b that is joined in contact with and joined to the inner side surface portion 31c side of the corner portion 30a via the adhesive 27.

  The S-shaped portion 41 extends in the vehicle width direction substantially along the lower surface portions 31b and 32b of the side sill 30, and is in contact with the lower surface portions 31b and 32b via the adhesive 27 to be bonded. 41c and an outer end in the vehicle width direction of the lower surface joint portion 41c extend upward substantially along the outer surface portion 32c side of the side sill 30 at the corner portion 30d, and are continuously connected to the lower surface joint portion 41c via the adhesive 27 through the corners. It has the outer side surface junction part (2nd outer side surface junction part) 41d contact | abutted and joined to the outer side surface part 32c side in the part 30d.

  Furthermore, the S-shaped portion 41 has a first connecting portion 41e that connects the inner side surface connecting portion 41b and the outer side surface connecting portion 41d. The first connecting portion 41e is inclined downward from the vehicle inner side toward the vehicle outer side, and is formed so that the distance from the upper surface joint portion 41a increases from the vehicle inner side toward the vehicle outer side. It is formed so that the separation distance from the lower surface joint portion 41c increases toward the vehicle interior side.

  The S-shaped portion 41 also has an inner surface non-contact portion 41f that does not contact the inner surface portion 31c of the side sill 30, and an outer surface non-contact portion 41g that does not contact the outer surface portion 32c of the side sill 30. .

  On the other hand, as shown in FIG. 8B and FIG. 10, the inverted S-shaped portion 42 extends in the vehicle width direction substantially along the upper surface portions 31 a and 32 a of the side sill 30, and the upper surface via the adhesive 27. An upper surface joining portion 42a that contacts and joins the portions 31a and 32a, and extends downwardly from the outer end portion of the upper surface joining portion 42a in the vehicle width direction along the outer surface portion 32c side of the side sill 30 at the corner portion 30c. It has the outer side surface joint part (1st outer side surface junction part) 42b contact | abutted and joined to the outer side surface part 32c side in the corner | angular part 30c through the adhesive agent 27 continuously from the junction part 42a.

  Further, the inverted S-shaped portion 42 extends in the vehicle width direction substantially along the lower surface portions 31 b and 32 b of the side sill 30, and is joined to the lower surface portions 31 b and 32 b in contact with each other via the adhesive 27. Part 42c and an inner end in the vehicle width direction of the lower surface joint portion 42c, extending upward substantially along the inner side surface 31c side of the side sill 30 at the corner portion 30b, and continuously through the adhesive 27 through the lower surface joint portion 42c. The corner portion 30b has an inner surface joint portion (second inner surface joint portion) 42d that is in contact with and joined to the inner surface portion 31c side.

  Further, the inverted S-shaped portion 42 has a second connecting portion 42e that connects the inner side surface joining portion 42d and the outer side surface joining portion 42b. The second connecting portion 42e is formed so as to incline downward as it goes from the outside of the vehicle toward the inside of the vehicle, and to increase the distance from the upper surface joint portion 42a as it goes from the outside of the vehicle to the inside of the vehicle. It is formed so that the separation distance from the lower surface joint portion 42c increases as it goes toward the vehicle outer side.

  The inverted S-shaped portion 42 also includes an inner surface non-contact portion 42f that does not contact the inner surface portion 31c of the side sill 30, and an outer surface non-contact portion 42g that does not contact the outer surface portion 32c of the side sill 30. Yes.

  Further, as shown in FIGS. 8 and 10, the partition wall portion 43 has an outer shape corresponding to the inner surface shape of the side sill 30 through the adhesive 27 and extends in an orthogonal cross-sectional direction orthogonal to the longitudinal direction of the side sill 30. It is formed as follows. In FIG. 8, the S-shaped portion 41, the inverted S-shaped portion 42, and the partition wall portion 43 are shown separated by a two-dot chain line for the sake of clarity.

  The reinforcing body 40 includes a plurality of S-shaped portions 41, inverted S-shaped portions 42, and partition walls 43, and the S-shaped portions 41 and the inverted S-shaped portions 42 are arranged in the longitudinal direction of the side sill 30. They are alternately arranged via partition walls 43 in the longitudinal direction of a vehicle body. In the reinforcing body 40, the S-shaped portion 41, the inverted S-shaped portion 42, and the partition wall 43 are integrally formed. The reinforcing body 40 can be obtained by molding a resin material by injection molding or the like.

  In this way, in the reinforcing body 40, a plurality of inner side surface joint portions 41b and 42d are provided apart in the longitudinal direction of the side sill 30, and a plurality of outer side surface joint portions 41d and 42b are provided apart in the longitudinal direction of the side sill 30. It is formed to be. Thereby, compared with the case where the inner side surface joint parts 41b and 42d and the outer side surface joint parts 41d and 42b are provided continuously in the longitudinal direction of the side sill 30, an increase in weight can be suppressed.

  In the reinforcing body 40, the first inner side surface joint portion 41b and the second inner side surface joint portion 42d are provided so as not to overlap in the longitudinal direction of the side sill 30, and the first outer side surface joint portion 42b. 41 d of 2nd outer side surface junction parts are provided so that it may not overlap with the longitudinal direction of the side sill 30. As shown in FIG.

  Further, the reinforcing body 40 is provided so as not to be joined to the outer surface portion 32c in a region where the inner surface joint portions 41b and 42d are projected on the outer surface portion 32c of the side sill 30 in the rotation axis M direction of the bending moment. 41d and 42b are provided so as not to be joined to the inner side surface portion 31c in the region projected on the inner side surface portion 31c of the side sill 30 in the direction of the rotation axis M of the bending moment.

  Further, in the reinforcing body 40, the first connecting portion 41 e is formed so that the distance from the upper surface joint portion 41 a increases as it goes from the inner side surface portion 31 c of the side sill 30 to the outer side surface portion 32 c and the outer side surface portion of the side sill 30. The second connecting portion 42e is formed so that the distance from the lower surface joint portion 41c increases toward the inner side surface portion 31c from the outer surface portion 32c of the side sill 30 toward the inner side surface portion 31c. Is formed so that the distance between the inner surface 31c of the side sill 30 and the outer surface 32c increases toward the outer surface 32c. Thereby, when shape | molding using the shaping | molding die, for example, when shape | molding the reinforcement body 40, for example by injection molding, the die cutting at the time of shaping | molding can be performed easily.

  As shown in FIGS. 3 and 7, the reinforcing body 40 is also closed at the joint 18 between the side sill 30 and the front pillar 15 on the outside of the vehicle inside the side sill 30 partitioned by the front pillar inner 16 in the vehicle width direction. A length in the vehicle width direction is formed short on the front side of the vehicle body so as to be disposed in the cross section S3.

  Similarly, in the portion disposed on the front side of the vehicle body, the reinforcing body 40 has a plate-like S-shaped portion 41 formed in an S-shape in an orthogonal cross section orthogonal to the longitudinal direction of the side sill 30, and the side sill 30. A plate-like inverted S-shaped portion 42 formed in an inverted S-shape in an orthogonal cross section orthogonal to the longitudinal direction, and an interior of the side sill 30 extending in the vehicle width direction, which is an orthogonal cross-sectional direction orthogonal to the longitudinal direction of the side sill 30 Specifically, it includes a plate-like partition wall portion 43 that divides the closed cross-section portion S3 inside the side sill 30 in the longitudinal direction of the vehicle body, and the S-shaped portion 41 and the inverted S-shaped portion 42 are in the longitudinal direction of the side sill 30. Are alternately arranged in the vehicle body front-rear direction with the partition walls 43 interposed therebetween.

  FIG. 5 shows an inverted S-shaped portion 42 of the reinforcing body 40 built in the side sill 30 in the joint portion 18 with the front pillar 15. As shown in FIG. 5, as shown in FIG. Then, the inverted S-shaped portion 42 includes an upper surface bonding portion 42a, an outer surface bonding portion (first outer surface bonding portion) 42b, a lower surface bonding portion 42c, and an inner surface bonding portion (the second bonding portion) in the closed cross section S3. Inner side surface joining portion) 42d and second connecting portion 42e are formed in an inverted S shape in a cross section orthogonal to the longitudinal direction of side sill 30.

  However, the upper surface bonding portion 42a is bonded to the upper surface portion 32a of the side sill outer 32, and the outer surface bonding portion 42b is bonded to the side surface portion 32c side of the corner portion 30c between the upper surface portion 32a and the side surface portion 32c of the side sill outer 32. The joining portion 42c is joined to the lower surface portion 17a extending in the substantially horizontal direction of the front pillar outer 17, and the inner side surface joining portion 42d is on the front pillar 16 side at the corner portion between the lower surface portion 17a of the front pillar outer 17 and the front pillar inner 16. It is joined.

  Although not shown, the S-shaped portion 41 is formed in an S shape in a cross section orthogonal to the longitudinal direction of the side sill 30 in the closed cross section S3 also on the vehicle body front side of the reinforcing body 40, and the partition wall The portion 43 is formed to extend in the vehicle width direction, which is an orthogonal cross-sectional direction orthogonal to the longitudinal direction of the side sill 30.

  In this way, the side sill 30 is provided with the reinforcing body 40 in the side sill 30 in the vicinity of the coupling portion 18 on the vehicle body rear side of the coupling portion 18 with the front pillar 15. It has the partition part 43 which divides the inside into a vehicle body front-back direction. In addition, the reinforcing body 40 is disposed in the side sill 30 at the coupling portion 18 with the front pillar 15 so as to have a partition wall portion extending in the vehicle width direction, and the coupling portion 18 with the front pillar 15 from the front end portion of the side sill 30. It extends to the rear side of the car body.

  In this embodiment, it is arranged in the side sill 30 in the vicinity of the coupling portion 18 on the vehicle body rear side of the coupling portion 18 with the front pillar 15, specifically, on the vehicle body rear side of the rear end portion 16 a of the front pillar inner 16. A reinforcing body (third reinforcing body) having a partition wall portion that divides the inside of the side sill 30 in the longitudinal direction of the vehicle body, and extends from the front end portion of the side sill 30 to the vehicle body rear side of the connecting portion 18 with the front pillar 15. A partition wall 18 extending in the vehicle width direction is disposed on the outer side in the vehicle width direction inside the side sill 30, specifically, in the side sill 30 partitioned by the front pillar inner 16 in the vehicle width direction at the joint 18 with the pillar 15. Although the reinforcement body (4th reinforcement body) which has a part is integrally formed by the reinforcement body 40, you may make it comprise these reinforcement bodies as another body.

  12 is an enlarged perspective view showing the main part of the side sill shown in FIG. 3, FIG. 13 is a perspective view showing a reinforcing body built in the vicinity of the coupling portion with the center pillar of the side sill shown in FIG. 12, and FIG. FIG. 14 is a cross-sectional view of the side sill along the lines Y14a-Y14a and Y14b-Y14b in FIG. 12, FIG. 14 (a) is a cross-sectional view along the line Y14a-Y14a, and FIG. 14 (b) is Y14b-Y14b. It is sectional drawing along a line. In FIG. 12, the side sill and the center pillar are indicated by a two-dot chain line in order to clearly show the reinforcing body incorporated in the side sill, and this is shown in a transmissive state.

  In the present embodiment, the reinforcing bodies 50 and 60 are built in the vicinity of the joint 23 of the side sill 30 with the center pillar 20. In the joint portion 23 of the side sill 30 with the center pillar 20, the center pillar inner 21 extends into the side sill 30, and the reinforcing bodies 50 and 60 are the vehicle body front side and the vehicle body rear side of the joint portion 23 with the center pillar 20, respectively. Specifically, it is disposed in the side sill 30 on the vehicle body front side with respect to the front end portion 21a of the center pillar inner 21 in the side sill 30 and on the vehicle body rear side with respect to the rear end portion 21b on the center pillar inner 21.

  A reinforcing body 50 (first reinforcing body) disposed on the vehicle body front side of the joint portion 23 of the side sill 30 with the center pillar 20 and a joint portion 23 of the side sill 30 with the center pillar 20 disposed on the vehicle body rear side. Since the reinforcing body 60 (second reinforcing body) to be formed is configured in the same manner, only the reinforcing body 50 will be described below.

  As shown in FIGS. 13 and 14, the reinforcing body 50 disposed on the vehicle body front side of the coupling portion 23 of the side sill 30 with the center pillar 20 extends in the vehicle width direction, and the inside of the side sill 30 extends in the vehicle longitudinal direction. A partition wall 51 having a plate shape for partitioning and a plate-shaped peripheral wall portion 52 extending in the longitudinal direction of the vehicle body, covering the periphery of the partition wall 51 and coupled to the partition wall 51 are provided.

  As shown in FIG. 14, the partition wall portion 51 has an outer shape corresponding to the inner surface shape of the side sill 30, and is formed to extend in an orthogonal cross-sectional direction orthogonal to the longitudinal direction of the side sill 30. The partition wall 51 is also provided with a plurality of plate-like ribs 53 extending from the partition wall 51 to the vehicle body front side and the vehicle body rear side.

  As shown in FIG. 14, the peripheral wall portion 52 also has an outer shape corresponding to the inner surface shape of the side sill 30, and is coupled to the side sill 30 by an adhesive 27. In addition, in order to attach the reinforcing body 100 disposed inside the corner portion 30d between the outer side surface portion 32c and the lower surface portions 31b and 32b of the side sill 30, which will be described later, to the peripheral wall portion 52, the shape of the reinforcing body 100 is set. Correspondingly, a cutout portion 54 having a substantially L-shaped cross section cut out on the vehicle inner side is formed. The reinforcing body 100 is coupled to the reinforcing body 50 by the adhesive 27 at the cutout portion 54 of the reinforcing body 50.

  In this way, the side sill 30 is provided with the reinforcing bodies 50 and 60 in the side sill 30 in the vicinity of the coupling portion 23 on the vehicle body front side and vehicle body rear side of the coupling portion 23 with the center pillar 20. 50 and 60 have the partition part 51 which divides the inside of the side sill 30 in the vehicle body front-back direction. The reinforcing bodies 50 and 60 can be obtained by molding a resin material by injection molding or the like.

  The side sill 30 is provided with reinforcing bodies (fifth reinforcing bodies) 70, 90, and 80 in the side sill 30 at the joint portions 7, 8, 9 with the cross members 4, 5, 6. Reinforcing bodies 70 and 80 disposed in the side sill 30 in the joint portions 7 and 9 with the cross members 4 and 6 are respectively provided on the vehicle body front side of the joint portion 23 with the center pillar 20 of the side sill 30. It is comprised similarly to the body 50, and has the partition part which divides the inside of the side sill 30 in the vehicle body front-back direction.

  On the other hand, the reinforcing body 90 disposed in the side sill 30 in the joint portion 8 with the cross member 5 is substantially the same as the reinforcing body 50 disposed on the vehicle body front side of the joint portion 23 with the center pillar 20 of the side sill 30. The side pillar 30 has a partition wall that divides the interior of the side sill 30 in the longitudinal direction of the vehicle body. However, since the center pillar inner 21 extends in the side sill 30 at the joint 8 with the cross member 5, the vehicle width It is comprised by the two division | segmentation reinforcement bodies 91 and 96 divided | segmented into the direction.

  The divided reinforcing body 91 located inside the vehicle is disposed in a closed cross-section S4 inside the side sill 30 partitioned by the center pillar inner 21 in the vehicle width direction, and extends in the vehicle width direction. 92 and a plate-like peripheral wall portion 93 extending in the longitudinal direction of the vehicle body. The peripheral wall portion 93 is coupled to the center pillar inner 21 and the side sill inner 31 via an adhesive 27.

  Further, the divided reinforcing body 96 positioned on the vehicle outer side is disposed in a closed cross section S5 on the vehicle outer side inside the side sill 30 divided in the vehicle width direction by the center pillar inner 21, and has a plate shape extending in the vehicle width direction. A partition wall 97 and a plate-like peripheral wall portion 98 extending in the longitudinal direction of the vehicle body are provided, and the peripheral wall portion 98 is coupled to the center pillar inner 21 and the side sill outer 32 via an adhesive 27.

  Also in the reinforcing body 90, the reinforcing body 100 is attached to the divided reinforcing body 96 in order to attach the reinforcing body 100 disposed inside the corner portion 30d between the outer side surface portion 32c and the lower surface portions 31b and 32b of the side sill 30 described later. A cutout portion 98 having a substantially L-shaped cross section cut out on the inner side of the vehicle is formed corresponding to the shape of the reinforcing member 100, and the reinforcing body 100 is coupled to the reinforcing body 90 by the adhesive 27 at the cutout portion 98 of the reinforcing body 90. Yes. Further, the partition walls 92 and 97 of the divided reinforcing bodies 91 and 96 are provided with a plurality of plate-like ribs extending from the partition walls 92 and 97 to the vehicle body front side and the vehicle body rear side.

  In this way, the side sill 30 has a partition wall portion 92 that divides the inside of the side sill 30 in the longitudinal direction of the vehicle body in the side sill 30 in the joint portions 7, 8, 9 with the cross members 4, 5, 6 extending in the vehicle width direction. , 97 are provided. The reinforcing bodies 70, 90, 80 can be obtained by molding a resin material by injection molding or the like.

  Further, the reinforcing body 100 is attached to the side sill 30 inside the corner portion 30d between the outer side surface portion 32c of the side sill 30 and the lower surface portions 31b and 32b. The reinforcing body 100 extends in the front-rear direction of the vehicle body, and the reinforcing body 70 is disposed in the side sill 30 in the joint portion 9 with the cross member 6 from the reinforcing body 70 disposed in the side sill 30 in the joint portion 7 with the cross member 4. It is provided to extend to the body 90. The reinforcing body 100 can be formed by pressing a metal plate material such as a steel plate.

  15 is an enlarged view of a main part of the side sill shown in FIG. 12, and FIG. 16 is a cross-sectional view taken along the lines Y16a-Y16a and Y16b-Y16b in FIG. ) Is a sectional view taken along line Y16a-Y16a, FIG. 16B is a sectional view taken along line Y16b-Y16b, and FIG. 17 is a sectional view taken along lines Y17a-Y17a and Y17b-Y17b in FIG. 17A is a cross-sectional view taken along line Y17a-Y17a, and FIG. 17B is a cross-sectional view taken along line Y17b-Y17b.

  The reinforcing body 100 is separated from the side sill 30 and extends along the inner surface of the corner portion 30d of the side sill 30. The reinforcing body 100 is integrally formed with the base 101, and the longitudinal direction of the side sill 30 is orthogonal to the longitudinal direction. And a plurality of convex portions 102 which are arranged in a direction (orthogonal cross-sectional direction) and project from the base portion 101 toward the side sill 30 and are formed in a quadrangular pyramid shape.

  FIG. 18 is an explanatory view for explaining the arrangement of the convex portions of the reinforcing body attached to the inside of the corner portion between the outer side surface portion and the lower surface portion of the side sill, and is a front view showing the main part of the reinforcing body 100. It is. As shown in FIG. 18, the plurality of convex portions 102 are formed in a quadrangular pyramid shape with a top surface portion 102 a having a quadrangular shape, and are periodically arranged in the longitudinal direction and the orthogonal cross-sectional direction of the side sill 30.

  Each of the plurality of convex portions 102 is arranged such that the square diagonal line of the top surface portion 102a is substantially parallel to the longitudinal direction and the orthogonal cross-sectional direction of the side sill 30, and the convex portions 102 adjacent to each other in the longitudinal direction of the side sill 30 are side sill 30. The adjacent protrusions 102 in the orthogonal cross-sectional direction of the side sill 30 overlap with each other in the longitudinal direction of the side sill 30.

  Further, as shown in FIGS. 16 and 17, the plurality of convex portions 102 are formed such that the height H1 of the convex portion 102 from the base portion 101 is substantially constant in the longitudinal direction and the orthogonal cross-sectional direction of the side sill 30. The top surface portion 102 a of the convex portion 102 is in contact with the side surface portion 32 c and the lower surface portion 32 b of the side sill outer 32. Accordingly, the base 101 is provided so as to be separated from the side sill 30 by a predetermined distance.

  Further, as shown in FIG. 15, the reinforcing body 100 has a portion extending along the side surface portion 32 c of the side sill outer 32 and a portion extending along the lower surface portion 32 b of the side sill outer 32 formed symmetrically. The convex portion 102 facing the ridge line between the side surface portion 32c and the lower surface portion 32b of the side sill outer 32 is in contact with the side surface portion 32c and the lower surface portion 32b of the side sill outer 32, and the top surface portion 32a is curved. Is formed.

  In FIG. 15, in the reinforcing body 100, the projecting portion 102 coupled to the side surface portion 32 c of the side sill outer 32 is indicated by a black circle (●). As shown in FIG. 15, the reinforcing body 100 has a convex portion 32 that abuts on the side surface portion 32c of the side sill outer 32 in the vicinity of the ridge line between the side surface portion 32c and the lower surface portion 32b of the side sill outer 32. Combined with.

  Similarly, the reinforcing body 100 also has a lower surface portion 32b of the side sill outer 32 in the vicinity of the ridge line between the side surface portion 32c and the lower surface portion 32b of the side sill outer 11 with respect to a portion extending along the lower surface portion 32b side of the side sill outer 32. The convex portion 102 that comes into contact with the lower surface portion 32b is coupled. The reinforcing body 100 and the side sill 30 can be joined by spot welding or the like.

  The reinforcing body 100 is also provided so that both end portions of the side sill 30 in the orthogonal cross-sectional direction are separated from the side sill 30. As shown in FIG. 16 (b), one end 103a in the cross-sectional direction of the side sill 30 is provided so as to be separated from the side surface 32c while being inclined at a predetermined angle from the side surface 32c of the side sill outer 32. As shown to 16 (a), it is provided so that it may be spaced apart from the side sill 30 rather than the base 101. FIG.

  Similarly, the other end portion 103b of the side sill 30 in the orthogonal cross-sectional direction is separated from the lower surface portion 32b while being inclined at a predetermined angle from the lower surface portion 32b of the side sill outer 32, as shown in FIG. As shown in FIG. 16 (a), it is provided so as to be further away from the side sill 30 than the base 101.

  As described above, the reinforcing body 100 is formed such that the end portions 103a and 103b of the reinforcing body 100 in the orthogonal cross-sectional direction of the side sill 30 are separated from the side sill 30, so that the reinforcing body 100 in the orthogonal cross-sectional direction of the side sill 30 is provided. Compared with the case where the end portion of 100 is in contact with the side sill 30, deformation in the longitudinal direction of the side sill 30 can be suppressed, and the bending strength of the side sill 30 can be improved.

  In this way, the reinforcing body 100 is attached to the side sill 30 inside the corner portion 30d between the outer side surface portion 32c of the side sill 30 and the lower surface portions 31b and 32b. Thereby, when a load is applied to the side sill 30, it is possible to prevent the corner portion 30d from buckling and deforming the cross section, and the bending strength of the side sill 30 can be increased.

  As described above, the reinforcing bodies 50, 60, 70, 80, and 90 are formed with cutout portions 54 and 98 having a substantially L-shaped cross section for attaching the reinforcing body 100, respectively. The notches 54 and 98 extend in the longitudinal direction of the vehicle body and are connected to the reinforcing bodies 50, 60, 70, 80 and 90 via the adhesive 27 to the notches 54 and 98.

  Further, as the adhesive 27, for example, a sheet-like thermosetting adhesive having a predetermined thickness that foams when heated to a predetermined temperature can be used, and the reinforcing plates 40, 50, It attaches to 60,70,80,90, Then, it can be made to foam by heating to predetermined temperature, and it can be made to fill between the side sill 30 and the reinforcements 50,60,70,80,90, and to couple | bond together.

  In addition, when a sheet-like thermosetting adhesive is used as the adhesive 27 used when the reinforcing bodies 50, 60, 70, 80, 90 and the reinforcing body 100 are joined together, the reinforcing bodies 50, 60, 70 are used. It is preferable to form the sheet-like adhesive 27 in a concavo-convex shape corresponding to the concavo-convex shape of the reinforcing body 100 so that the expansion ratio of the adhesive 27 attached to 80, 90 is constant.

  Instead, as the adhesive 27 used when the reinforcing bodies 50, 60, 70, 80, 90 and the reinforcing body 100 are joined together, a sheet-like thermosetting adhesive having a predetermined thickness is used, and the reinforcing body is used. The notches 54 of the reinforcing plates 50, 60, 70, 80, 90 corresponding to the concavo-convex shape of the reinforcing body 100 so that the expansion ratio of the adhesive 27 attached to 50, 60, 70, 80, 90 is constant. It is also possible to form 98 in an uneven shape.

  As described above, the side sill structure of the vehicle according to the present embodiment is the first sill disposed in the side sill 30 in the vicinity of the coupling portion 23 on the vehicle body front side and the vehicle body rear side of the coupling portion 23 with the center pillar 20. A reinforcing body 50 and a second reinforcing body 60, and a third reinforcing body 40 disposed in the side sill 30 in the vicinity of the connecting portion 18 on the vehicle body rear side of the connecting portion 18 to the front pillar 15; The first, second, and third reinforcing bodies 50, 60, and 40 have partition portions 51 and 43 that divide the inside of the side sill 30 in the longitudinal direction of the vehicle body, respectively.

  As a result, the side sill 30 is separated from the partition wall 51 in the vicinity of the coupling portion 23 of the side sill 30 and the center pillar 20 and the coupling portion 18 of the front pillar 15, which are likely to be deformed by a bending moment when a torsional load is applied to the vehicle body. 43, the side sill 30 can be prevented from bending deformation when a torsional load is applied to the vehicle body, and the torsional rigidity of the vehicle body can be improved while suppressing an increase in weight. . Further, by suppressing the increase in weight, the fuel efficiency is improved, and the energy saving effect can be enhanced.

  In addition, a fourth reinforcing body 40 having a partition wall portion extending in the vehicle width direction and disposed in the side sill 30 at the joint portion 18 with the front pillar 15 is provided. The side sill 30 can be effectively reinforced at the connecting portion 18 of the side sill 30 with the front pillar 15 by extending from the front end of the connecting portion 18 to the vehicle rear side of the connecting portion 18 with the front pillar 15. It can play more effectively. Even when a so-called nose dive occurs in which the front part of the vehicle body sinks downward and the rear part of the vehicle body floats upward during deceleration, bending deformation of the side sill 30 at the joint 18 with the front pillar 15 can be effectively suppressed.

  Further, the fourth reinforcing body 40 is disposed on the outer side in the vehicle width direction inside the side sill 30 divided in the vehicle width direction by the front pillar inner 16 in the side sill 30 at the joint 18 with the front pillar 15. As a result, it is possible to effectively suppress the bending deformation of the side sill 30 when a load is input to the side sill 30 from the outer side in the vehicle width direction while suppressing an increase in weight. It can play effectively.

  Further, partition portions 51, 92, and 97 are disposed in the side sill 30 at the connecting portions 7, 8, and 9 with the cross members 4, 5, and 6 extending in the vehicle width direction, and divide the inside of the side sill 30 in the longitudinal direction of the vehicle body. By further including the fifth reinforcing bodies 70, 80, and 90 having the above, the bending deformation of the side sill 30 can be more effectively suppressed, and the above-described effect can be more effectively exhibited. When a load is input to the side sill 30 from the outside in the vehicle width direction, the load input to the side sill 30 is transmitted to the cross members 4, 5, 6 through the fifth reinforcing bodies 70, 80, 90 and dispersed. It is possible to further suppress the side sill 30 from being bent and deformed.

  In the present embodiment, the first reinforcing body 50 or the second reinforcing body 60 and the fifth reinforcing bodies 70, 80, 90 are configured separately, but the fifth reinforcing bodies 70, 80 are configured separately. , 90 can be formed integrally with the first reinforcing body 50 or the second reinforcing body 60 according to the positions of the cross members 4, 5, 6.

  As described above, the present invention is not limited to the illustrated embodiments, and it goes without saying that various improvements and design changes can be made without departing from the gist of the present invention.

  The present invention can provide a vehicle side sill structure capable of improving the torsional rigidity of the vehicle body while suppressing an increase in weight, and can be widely applied to a vehicle body in which a reinforcing body for reinforcing the side sill is incorporated in the side sill. May be used.

DESCRIPTION OF SYMBOLS 1 Car body 15 Front pillar 16 Front pillar inner 17 Front pillar outer 20 Center pillar 21 Center pillar inner 22 Center pillar outer 30 Side sill 40, 50, 60, 70, 80, 90, 100 Reinforcement body 43, 51, 92, 97 Partition part

Claims (5)

A side sill structure of a vehicle in which a reinforcing body for reinforcing the side sill is incorporated in a side sill extending in the longitudinal direction of the vehicle body at the lower part of the vehicle body,
A first reinforcement body and a second reinforcement body respectively disposed in the side sill in the vicinity of the coupling portion on the vehicle body front side and the vehicle body rear side of the coupling portion with the center pillar;
A third reinforcing body disposed in the side sill in the vicinity of the coupling portion on the vehicle body rear side of the coupling portion with the front pillar;
With
Each of the first, second, and third reinforcing bodies has a partition portion that divides the inside of the side sill in the vehicle longitudinal direction.
A vehicle side sill structure characterized by that. A partition that extends in the vehicle width direction, and includes a fourth reinforcing body that is disposed in the side sill at a joint with the front pillar;
The fourth reinforcing body extends from the front end portion of the side sill to the vehicle body rear side of the coupling portion with the front pillar.
The side sill structure for a vehicle according to claim 1. The center pillar includes a center pillar inner located on the inner side in the vehicle width direction and a center pillar outer located on the outer side in the vehicle width direction, and the center pillar inner is connected to the side sill. Extends in the side sill to divide the interior in the vehicle width direction,
The first reinforcing body is disposed on the vehicle front side of the front end portion of the center pillar inner in the side sill,
The second reinforcing body is disposed on the vehicle body rear side of the rear end portion of the center pillar inner in the side sill,
The front pillar includes a front pillar inner positioned on the inner side in the vehicle width direction and a front pillar outer positioned on the outer side in the vehicle width direction, and the front pillar inner is connected to the side sill at the side sill. Extends in the side sill to divide the interior in the vehicle width direction,
The third reinforcing body is disposed on the rear side of the vehicle body from the rear end of the front pillar inner in the side sill.
The side sill structure for a vehicle according to claim 1 or 2, wherein the vehicle has a side sill structure. The fourth reinforcing body is disposed on the outer side in the vehicle width direction inside the side sill divided in the vehicle width direction by the front pillar inner in the side sill at the coupling portion with the front pillar. ,
The side sill structure for a vehicle according to any one of claims 1 to 3, wherein the side sill structure is a vehicle. A fifth reinforcing body that is disposed in the side sill at the joint portion with the cross member extending in the vehicle width direction and has a partition wall that partitions the inside of the side sill in the vehicle longitudinal direction;
The vehicle side sill structure according to any one of claims 1 to 4, wherein the vehicle side sill structure is provided.

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