JP2009101727A - Body side structure - Google Patents

Abstract

A vehicle body side structure capable of improving the load transmission efficiency from the lower side of the center pillar to the rocker side at the time of a side collision and effectively suppressing deformation of the center pillar inner panel inward in the vehicle width direction. .
A lower portion of a center pillar reinforcement 42 is connected to an overlapping portion 62 of a rocker 18 via an upper wall portion 54, an intermediate wall portion 56, a side wall portion 60, and a lower wall portion 58 of a hinge retainer 50. The lower wall portion 58 extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion 54 and is coupled to the overlapping portion 62. When a rotational force inward in the vehicle width direction acts on the closed cross-section portion 28 of the rocker 18, most of the load A is in a direction in which the overlapping portion 62 is crushed substantially downward by the hinge retainer 50. It is converted into a load B and acts.
[Selection] Figure 3

Description

  The present invention relates to a vehicle body side structure in which a lower end portion of a center pillar is coupled to a rocker.

  On the side of the vehicle body, the lower end portion of the center pillar is coupled to the rocker. Reinforce is arranged in the center pillar outer panel and the center pillar inner panel constituting the center pillar in order to ensure the rigidity of the center pillar. (For example, refer to Patent Document 1). In such a structure, when a collision load is input to the lower part of the center pillar at the time of a side collision of the vehicle, the lower part of the center pillar tends to be deformed so as to fall inward in the vehicle width direction around the closed cross section of the rocker. .

In this case, the input load from the center pillar outer panel and the reinforcement side to the rocker side acts as a pulling load in the direction in which the rocker is rotated inward in the vehicle width direction, so the load transmission efficiency to the rocker side is not good. For this reason, the deformation of the center pillar inner panel toward the inner side in the vehicle width direction (vehicle interior side) may not be sufficiently suppressed unless the bending resistance of the center pillar against side collision and the coupling strength between the center pillar and the rocker are secured. There is.
Japanese Patent Laid-Open No. 2000-177631

  In consideration of the above fact, the present invention improves the load transmission efficiency from the lower side of the center pillar to the rocker side at the time of a side collision, and effectively suppresses deformation of the center pillar inner panel inward in the vehicle width direction. The object is to obtain a vehicle body side structure that can

  The vehicle body side structure according to the first aspect of the present invention includes a rocker inner panel disposed at a lower end portion of the vehicle body side portion with the vehicle longitudinal direction as a longitudinal direction, and a vehicle longitudinal direction outside the rocker inner panel in the vehicle width direction. Is disposed in the longitudinal direction, and the rocker inner panel forms a closed cross section with the rocker inner panel, and is disposed in the vehicle longitudinal direction middle portion of the vehicle body side portion with the vehicle vertical direction as the longitudinal direction, and the lower portion is the rocker inner A center pillar inner panel disposed between the upper and lower flange portions of the panel and the upper and lower flange portions of the rocker reinforcement, and the vehicle longitudinal direction of the center pillar inner panel in the longitudinal direction substantially outside the center pillar inner panel. The center pillar inner panel forms a closed section and the lower end is connected to the rocker reinforcement. The center pillar reinforcement, the upper wall portion for fixing the door hinge fixed to the lower portion of the center pillar reinforcement, and extending substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion. The lower wall part joined to the overlapping part of the upper flange part of the rocker inner panel, the center pillar inner panel and the upper flange part of the rocker reinforcement, and the upper wall part and the lower wall part are integrally connected. And a hinge retainer provided with a connecting wall portion.

  According to the vehicle body side part structure of the present invention described in claim 1, the lower part of the center pillar reinforcement is connected to the upper flange part of the rocker inner panel via the upper wall part, the connecting wall part and the lower wall part of the hinge retainer. Since it is connected to the overlapping part of the center pillar inner panel and the upper flange part of the rocker reinforcement, if the collision load at the time of a side collision is input to the lower part of the center pillar reinforcement, the upper wall of the hinge retainer from the center pillar reinforcement side The load input to the part is transmitted to the lower wall part through the connecting wall part of the hinge retainer and supported by the overlapping part.

  Here, since the lower wall portion extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion and is coupled to the overlapping portion, the center pillar reinforcement and the center pillar at the time of a side collision When a rotational force inward in the vehicle width direction is applied to the inner panel with a closed cross section formed by the rocker inner panel and rocker reinforcement as the center, most of the load is superposed by the hinge retainer. It is converted into a load in the direction of crushing the portion to the vehicle lower side and acts. For this reason, the rotational displacement to the vehicle width direction inner side in the lower part of a center pillar inner panel is suppressed.

  A vehicle body side part structure according to a second aspect of the present invention is characterized in that, in the configuration according to the first aspect, a reinforcing bead extending along a vehicle vertical direction is formed in the overlapping portion. .

  According to the vehicle body side portion structure of the present invention described in claim 2, the overlapping portion of the upper flange portion of the rocker inner panel, the center pillar inner panel, and the upper flange portion of the rocker reinforcement extends along the vehicle vertical direction. Since the existing reinforcing bead is formed, when a load acting in the direction of crushing the overlapped portion to the vehicle lower side via the hinge retainer at the time of a side collision, even if the load is a load of a predetermined value or more The superposed part continuously supports the load and deforms so as to be gradually crushed.

  The vehicle body side part structure of the present invention described in claim 3 is the structure according to claim 1 or 2, wherein the lower wall portion includes an upper flange portion of the rocker inner panel and an upper flange portion of the rocker reinforcement. It is arrange | positioned in the state pinched | interposed between.

  According to the vehicle body side part structure of the present invention described in claim 3, the lower wall portion of the hinge retainer is disposed in a state of being sandwiched between the upper flange portion of the rocker inner panel and the upper flange portion of the rocker reinforcement. Therefore, when a load in the direction of crushing the overlapped portion substantially downward with respect to the vehicle acts via the hinge retainer at the time of a side collision, the lower wall portion side of the hinge retainer transmits the load to the overlapped portion more stably.

  As described above, according to the vehicle body side part structure according to claim 1 of the present invention, the load transmission efficiency from the lower side of the center pillar to the rocker side at the time of a side collision is improved and the vehicle of the center pillar inner panel is improved. It has the outstanding effect that the deformation | transformation to the width direction inner side can be suppressed effectively.

  According to the vehicle body side part structure of the second aspect, there is an excellent effect that the load from the hinge retainer side to the overlapping part at the time of a side collision can be continuously supported.

  According to the vehicle body side part structure of the third aspect, there is an excellent effect that the load from the hinge retainer side to the overlapping portion at the time of a side collision can be more stably transmitted.

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

  FIG. 1 is a perspective view of the overall structure of the vehicle body side part structure according to the present embodiment viewed from the inside in the vehicle width direction. FIG. 2 shows a main part of the vehicle body side part structure (lower part of the center pillar and its surroundings). The enlarged vertical sectional view of the structure of FIG. As shown in FIG. 1, a front side door opening 12 that is opened and closed by a front side door (not shown) is formed on the front side of the vehicle body side portion 10. A rear-side door opening 14 that is opened and closed by a rear side door that is not to be opened is formed. On the lower edge side of the front door opening 12 and the rear door opening 14, that is, the lower end of the vehicle body side 10, a rocker 18 (also referred to as a side sill) is disposed with the vehicle longitudinal direction as the longitudinal direction.

  The rocker 18 is a body frame material having a closed cross-sectional structure, and includes a rocker inner panel 20 disposed on the inner side in the vehicle width direction. The rocker inner panel 20 is arranged with the longitudinal direction of the vehicle as the longitudinal direction, and has a substantially hat-shaped cross section with the opening facing outward in the vehicle width direction. An upper flange portion 20 </ b> A is formed at the upper end portion of the rocker inner panel 20, and a lower flange portion 20 </ b> B is formed at the lower end portion of the rocker inner panel 20. The upper flange portion 20A and the lower flange portion 20B are arranged such that their general surfaces are surfaces including the vehicle vertical direction and the vehicle front-rear direction.

  Further, the rocker 18 includes a rocker outer panel 22 disposed on the outer side in the vehicle width direction of the rocker inner panel 20. The rocker outer panel 22 is formed as a part of the cylinder outer 16 constituting the vehicle body side plate portion, and is disposed with the vehicle front-rear direction as the longitudinal direction, and has a substantially hat-shaped cross section with the opening directed inward in the vehicle width direction. . An upper flange portion 22 </ b> A is formed at the upper end portion of the rocker outer panel 22, and a lower flange portion 22 </ b> B is formed at the lower end portion of the rocker outer panel 22. 22 A of upper flange parts and 22 B of lower flange parts are arrange | positioned by using the surface where the general surface includes a vehicle up-down direction and a vehicle front-back direction as a surface direction.

  In the rocker 18, basically, the upper flange portion 20 </ b> A of the rocker inner panel 20 and the upper flange portion 22 </ b> A of the rocker outer panel 22 are spot-welded, and the lower flange portion 20 </ b> B of the rocker inner panel 20 and the bottom of the rocker outer panel 22. The flange portion 22B is spot welded to form a closed cross-sectional structure. That is, the closed section 24 is formed by the rocker inner panel 20 and the rocker outer panel 22.

  As shown in FIG. 2, a floor pan 30 is disposed inside the rocker 18 in the vehicle width direction. A terminal portion 30 </ b> A on the outer side in the vehicle width direction of the floor pan 30 is spot-welded to the lower surface side of the bulging portion 20 </ b> C on the inner side in the vehicle width direction formed at the intermediate portion in the height direction of the rocker inner panel 20. Further, a floor cross member 32 is disposed in the vehicle longitudinal direction intermediate portion on the upper surface side of the floor pan 30 with the vehicle width direction as a longitudinal direction. The floor cross member 32 is formed as a bulging portion of the rocker inner panel 20. Spot welding is performed on the upper surface of 20C and the upper surface of the floor pan 30.

  As shown in FIG. 1, a long rocker reinforcement 26 is disposed outside the rocker inner panel 20 in the vehicle width direction and inside the rocker outer panel 22 in the vehicle width direction. The rocker reinforcement 26 constitutes a part of the rocker 18 and is arranged with the vehicle front-rear direction as the longitudinal direction, and has a substantially hat-shaped cross section with the opening directed inward in the vehicle width direction. An upper flange portion 26 </ b> A is formed at the upper end portion of the rocker reinforcement 26, and a lower flange portion 26 </ b> B is formed at the lower end portion of the rocker reinforcement 26. 26 A of upper flange parts and the lower flange part 26B are arrange | positioned by using the surface where the general surface includes a vehicle up-down direction and a vehicle front-back direction as a surface direction.

  The upper flange portion 26A of the rocker reinforcement 26 is basically spot-welded in three layers while being sandwiched between the upper flange portion 20A of the rocker inner panel 20 and the upper flange portion 22A of the rocker outer panel 22. ing. Further, the lower flange portion 26B of the rocker reinforcement 26 is basically a spot of three layers in a state of being sandwiched between the lower flange portion 20B of the rocker inner panel 20 and the lower flange portion 22B of the rocker outer panel 22. Welded. Thus, the closed section 28 is configured by the rocker reinforcement 26 and the rocker inner panel 20.

  As shown in FIG. 2, a center pillar inner panel 36 of a center pillar (B pillar) 34 is substantially along the vehicle vertical direction on the outside of the rocker inner panel 20 in the vehicle width direction and on the extended line of the floor cross member 32. It is erected. That is, the center pillar 34 is a vehicle body skeleton material having a closed cross-sectional structure arranged with the vehicle vertical direction as a longitudinal direction. The center pillar inner panel 36 arranged on the inner side in the vehicle width direction of the center pillar 34 10 is arranged between the vertical flange portions 20A and 20B of the rocker inner panel 20 and the vertical flange portions 26A and 26B of the rocker reinforcement 26. The upper and lower flange portions 20A, 20B, 26A, and 26B are spot-welded.

  As shown in FIG. 1, the center pillar inner panel 36 has a substantially cross-sectional shape in which the horizontal cross-sectional shape faces the opening in the vehicle width direction on the vehicle upper side of the rocker 18. A pair of front and rear flange portions 36 </ b> A and 36 </ b> B for bonding are formed at the front end portion and the rear end portion of the center pillar inner panel 36. A through hole 36D is formed in a lower portion (a position close to the rocker 18) of a bulging portion 36C inward in the vehicle width direction formed at the middle portion of the center pillar inner panel 36 in the vehicle longitudinal direction. It is a hole for attaching the hinge retainer 50 or the retractor (not shown).

  The center pillar 34 includes a center pillar outer panel 38 disposed on the outer side in the vehicle width direction of the center pillar inner panel 36. The center pillar outer panel 38 is formed as a part of the cylinder outer 16, and is arranged with the vehicle vertical direction as a longitudinal direction. The horizontal cross-sectional shape of the center pillar outer panel 38 is a substantially hat shape with the opening directed inward in the vehicle width direction. A pair of front and rear flange portions 38 </ b> A and 38 </ b> B for bonding are formed on the front end portion and the rear end portion of the center pillar outer panel 38.

  The center pillar 34 basically has a closed cross-section structure by spot welding the front and rear flange portions 36A and 36B of the center pillar inner panel 36 and the front and rear flange portions 38A and 38B of the center pillar outer panel 38. Yes. That is, a closed cross section 40 is formed by the center pillar inner panel 36 and the center pillar outer panel 38.

  A center pillar reinforcement 42 is disposed on the outer side in the vehicle width direction of the center pillar inner panel 36 and on the inner side in the vehicle width direction of the center pillar outer panel 38 with the vehicle vertical direction as a longitudinal direction. The center pillar reinforcement 42 constitutes a part of the center pillar 34 and reinforces the center pillar outer panel 38. As shown in FIG. 2, the lower end portion 42 </ b> D of the center pillar reinforcement 42 is coupled to a bulging portion 26 </ b> C outward in the vehicle width direction formed at the intermediate portion in the height direction of the rocker reinforcement 26 by spot welding. As shown in FIG. 1, the horizontal cross-sectional shape of the center pillar reinforcement 42 is a substantially hat shape with the opening facing inward in the vehicle width direction, and bulges outward in the vehicle width direction at the middle portion in the vehicle longitudinal direction. A bulging portion 42 </ b> C is formed, and a pair of front and rear flange portions 42 </ b> A and 42 </ b> B for bonding are formed at the front end portion and the rear end portion of the center pillar reinforcement 42.

  The front flange portion 42A of the center pillar reinforcement 42 is spot-welded in a three-ply manner while being sandwiched between the front flange portion 36A of the center pillar inner panel 36 and the front flange portion 38A of the center pillar outer panel 38. . Further, the rear flange portion 42B of the center pillar reinforcement 42 is spot-welded in a three-ply manner while being sandwiched between the rear flange portion 36B of the center pillar inner panel 36 and the rear flange portion 38B of the center pillar outer panel 38. ing. As a result, the center pillar reinforcement 42 and the center pillar inner panel 36 constitute a closed section 44.

  As shown in FIG. 2, the upper wall portion 54 of the hinge retainer 50 is connected to a bolt 46 </ b> A, which is a fastening component, on the inner surface in the vehicle width direction (vehicle interior side) at the lower portion of the bulging portion 42 </ b> C of the center pillar reinforcement 42. A door hinge 48 of a rear side door (not shown) is fixed to the upper wall portion 54 for fixing the door hinge with the center pillar reinforcement 42 and the center pillar outer panel 38 interposed therebetween. That is, the bolt 46A penetrates the bolt insertion hole formed in each of the attachment piece 48A of the door hinge 48, the center pillar outer panel 38, the center pillar reinforcement 42, and the upper wall portion 54 of the hinge retainer 50 from the outside in the vehicle width direction. The nut 46B is screwed to the front end portion from the vehicle width direction inner side (vehicle interior side).

  In the hinge retainer 50, a top wall portion 52 that is bent inward in the vehicle width direction is formed from the upper end of the upper wall portion 54, and the general surface of the top wall portion 52 is arranged with a substantially horizontal plane as the surface direction. (See FIG. 1). As shown in FIGS. 1 and 2, the hinge retainer 50 includes a lower wall portion 58 that extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion 54. An intermediate wall portion 56 and a side wall portion 60 are provided as connecting wall portions that integrally connect the wall portion 54 and the lower wall portion 58. The intermediate wall portion 56 is bent from the lower end of the upper wall portion 54 and extends inward in the vehicle width direction and penetrates the through hole 36D. The lower wall portion 58 is on the inner side in the vehicle width direction of the intermediate wall portion 56. It is bent from the end and extends to the vehicle lower side. As shown in FIG. 1, the intermediate wall portion 56 has a general surface with a substantially horizontal plane as a surface direction, and the lower wall portion 58 has a general surface in a substantially vehicle vertical direction and a vehicle front-rear direction. A surface including the surface is disposed as a surface direction.

  As shown in FIG. 2, the lower wall portion 58 includes an overlapping portion 62 of the upper flange portion 20A of the rocker inner panel 20, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26 (the upper flange matching portion of the rocker inner panel 26). ) (Setting of load transmission reinforcement wall). In other words, the position of the overlapping portion 62 is extended to a position where it can be coupled to the hinge retainer 50. The lower wall portion 58 is disposed on the inner side in the vehicle width direction of the center pillar inner panel 36 while being sandwiched between the upper flange portion 20A of the rocker inner panel 20 and the upper flange portion 26A of the rocker reinforcement 26. That is, the lower wall portion 58 is disposed between the upper flange portion 20 </ b> A of the rocker inner panel 20 and the center pillar inner panel 36.

  As shown in FIG. 1, the overlapping portion 62 is formed with a reinforcing bead 64 that protrudes inward in the vehicle width direction, and the reinforcing bead 64 extends along the vehicle vertical direction. In the present embodiment, the reinforcing bead 64 is formed only on the upper flange portion 20A of the rocker inner panel 20 in the overlapping portion 62, but is located in another portion of the overlapping portion 62 (the overlapping portion 62 of the center pillar inner panel 36). It may be configured to be formed also on a part or a part located in the overlapping part 62 of the upper flange part 26A of the rocker reinforcement 26. In other words, a configuration in which the reinforcing bead 64 is formed at any part of the overlapping portion 62 is preferable. In the present embodiment, a total of two reinforcing beads 64 are formed near the front and rear ends (both ends in the vehicle front-rear direction) of the lower wall portion 58 of the hinge retainer 50. The positions of the reinforcing beads 64 are lower wall portions. The other position including the opposing position of 58 middle parts in the vehicle front-rear direction may be used, and the number of reinforcing beads 64 may be other than two.

  In the hinge retainer 50, the front and rear ends (both ends in the vehicle front-rear direction) of the top wall portion 52, the upper wall portion 54, the intermediate wall portion 56, and the lower wall portion 58 are integrally connected by the side wall portions 60. The side wall portion 60 is disposed such that a general surface thereof includes a surface including a substantially vehicle vertical direction and a substantially vehicle width direction. The side wall 60 enhances the rigidity of the hinge retainer 50 with respect to the load around the vehicle longitudinal axis. In the present embodiment, the lower end portion of the side wall portion 60 is disposed in the concave portion of the reinforcing bead 64.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  As shown in FIG. 3, the bumper portion 100 </ b> A of the barrier 100 (MDB (Moving Deformable Barrier)) collides with the lower portion of the vehicle body side portion 10 (that is, side collision), and the collision load F is input to the lower portion of the center pillar 34. Then, the lower part of the center pillar 34 tends to be deformed so as to fall to the inner side in the vehicle width direction (the vehicle interior side, the arrow A direction side).

  The lower part of the center pillar reinforcement 42 constituting a part of the lower part of the center pillar 34 is connected to the rocker inner panel 20 through the upper wall part 54, the intermediate wall part 56, the side wall part 60 and the lower wall part 58 of the hinge retainer 50. Since the upper flange portion 20A, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26 are connected to the overlapping portion 62, when a collision load F at the time of a side collision is input to the lower portion of the center pillar reinforcement 42. The load F input to the upper wall portion 54 of the hinge retainer 50 from the center pillar reinforcement 42 side is transmitted to the lower wall portion 58 via the intermediate wall portion 56 and the side wall portion 60 of the hinge retainer 50 and is overlapped. Supported by

  Here, since the lower wall portion 58 extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion 54 and is coupled to the overlapping portion 62, the center pillar reinforcement 42 is formed at the time of a side collision. And the center pillar inner panel 36 with respect to the rotational force (the load A in the direction in which the center pillar 34 is bent and deformed) around the closed cross section 28 formed by the rocker inner panel 20 and the rocker reinforcement 26. ) Is converted by the hinge retainer 50 into a load B in a direction that crushes the overlapping portion 62 substantially downward on the vehicle (almost along the standing direction of the overlapping portion 62). Acts as an axial input).

  That is, in such a load transmission structure of the center pillar 34, the overlapping portion 62 is buckled by pushing it in the vertical direction of the vehicle, and a part of the load F (load B) is shared on the overlapping portion 62 side. For this reason, in the lower part of the center pillar inner panel 36, relative displacement inward in the vehicle width direction with respect to the rocker 18 and rotational displacement (inclination angle) inward in the vehicle width direction are suppressed. As a result, the tensile force generated above and below the bending deformation portion in the lower portion of the center pillar inner panel 36 (the tensile force on the vehicle upper side of the bending deformation portion on the vehicle upper side, and the vehicle on the vehicle lower side of the bending deformation portion) In other words, the load in the direction of breaking the center pillar inner panel 36 can be suppressed (improvement of quality and reliability).

  Supplementally, in the contrast structure in which the hinge retainer is not coupled to the overlapping portion at the top of the rocker, when the center pillar is displaced inward in the vehicle width direction (inside the vehicle compartment) due to the input from the barrier at the time of a side collision, the center pillar reinforcement and the cylinder outer (center Since the input load from the pillar outer panel) side to the rocker side acts as a tensile load in the direction of rotating the rocker inward in the vehicle width direction, the load transmission efficiency to the rocker side is not good. Further, in such a contrast structure, in order to suppress the displacement amount of the center pillar inner panel inward in the vehicle width direction, the center pillar reinforcement strength (moment strength) and the coupling strength between the center pillar and the rocker are determined as the center pillar reinforcement. However, as a result, the vehicle body mass is increased. On the other hand, in this embodiment, since the load B is applied in the direction in which the overlapping portion 62 is crushed to the vehicle lower side by the hinge retainer 50, the load transmission efficiency to the rocker 18 is improved and the center pillar inner panel 36 is applied. This reduces the amount of displacement inward in the vehicle width direction (improvement of occupant protection performance) and reduces the need for reinforcement as compared with the above-described comparison structure, thus contributing to weight reduction of the vehicle body.

  Further, in this embodiment, the overlapping portion 62 of the upper flange portion 20A of the rocker inner panel 20, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26 has a reinforcing bead extending along the vehicle vertical direction. 64 is formed, and when a load B is applied in the direction of crushing the overlapping portion 62 to the vehicle lower side through the hinge retainer 50 at the time of a side collision, even if the load B is a load greater than or equal to a predetermined value. The overlapping portion 62 continuously supports the load B and deforms so as to be gradually crushed. Moreover, energy absorption is made effective by buckling the superposition | polymerization part 62. FIG. Accordingly, the inward displacement in the vehicle width direction at the lower portion of the center pillar inner panel 36 is effectively suppressed. In other words, the deformation mode of the lower part of the center pillar 34 at the time of a side collision can be controlled by setting the strength of the hinge retainer 50 and the overlapping portion 62.

  Further, since the lower wall portion 58 of the hinge retainer 50 is disposed between the upper flange portion 20A of the rocker inner panel 20 and the upper flange portion 26A of the rocker reinforcement 26, the hinge retainer 50 is hinged at the time of a side collision. When a load B is applied in a direction that crushes the overlapping portion 62 to the vehicle lower side via the retainer 50, the lower wall portion 58 side of the hinge retainer 50 transmits the load to the overlapping portion 62 more stably.

  As described above, according to the vehicle body side part structure according to the present embodiment, the load transmission efficiency from the lower side of the center pillar 34 to the rocker 18 side at the time of a side collision is improved and the vehicle width of the center pillar inner panel 36 is increased. Deformation inward in the direction can be effectively suppressed.

[Second Embodiment]
Next, a vehicle body side part structure according to a second embodiment of the present invention will be described with reference to FIG. FIG. 4 shows a vehicle body side part structure according to the second embodiment of the present invention in an enlarged vertical sectional view (a figure corresponding to FIG. 2 of the first embodiment). As shown in this figure, the vehicle body side structure according to the second embodiment is the first in that the lower wall portion 74 of the hinge retainer 70 is coupled to the upper flange portion 26A of the rocker reinforcement 26. It differs from the vehicle body side part structure according to the embodiment. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4, in the hinge retainer 70, the intermediate wall portion 72 as a connecting wall portion that integrally connects the upper wall portion 54 and the lower wall portion 74 has a vehicle lower side toward the inner side in the vehicle width direction. It is inclined to. The lower wall portion 74 extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion 54, and its general surface faces a surface that includes the vehicle vertical direction and the vehicle longitudinal direction. It is arranged as a direction. Further, the lower wall portion 74 is coupled to the overlapping portion 62 of the upper flange portion 20A of the rocker inner panel 20, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26. The reinforcement 26 is joined to the outer surface of the upper flange portion 26A of the reinforcement 26 by spot welding.

  The configuration of the present embodiment is a configuration applicable when the lower wall portion 74 of the hinge retainer 70 cannot be sandwiched between the overlapping portions 62, and such a configuration is also substantially the same as the first embodiment described above. The following actions and effects can be obtained.

[Third Embodiment]
Next, a vehicle body side part structure according to a third embodiment of the present invention will be described with reference to FIG. FIG. 5 shows an enlarged vertical sectional view of a main part of the vehicle body side structure according to the third embodiment of the present invention (a view corresponding to FIG. 2 of the first embodiment). As shown in this figure, the vehicle body side part structure according to the third embodiment relates to the first embodiment in that the lower wall part 82 of the hinge retainer 80 extends to the lower part of the rocker 18. It is different from the vehicle body side structure. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 5, the upper wall portion 54 and the lower wall portion 82 are integrally connected by an intermediate wall portion 56 and a side wall portion 60. The lower wall portion 82 extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side than the upper wall portion 54, and is in surface contact with the surface of the center pillar inner panel 36 on the vehicle width direction inner side. The general plane is disposed with the plane including the substantially vertical direction and the longitudinal direction of the vehicle as the plane direction.

  The upper portion of the lower wall portion 82 is coupled to the overlapping portion 62 of the upper flange portion 20A of the rocker inner panel 20, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26, more specifically, It is disposed inside the center pillar inner panel 36 in the vehicle width direction while being sandwiched between the upper flange portion 20A of the inner panel 20 and the upper flange portion 26A of the rocker reinforcement 26, and is spot welded at the overlapping portion 62. ing.

  The lower wall portion 82 includes a lower overlapping portion 84 in which the lower flange portion 20B of the rocker inner panel 20, the center pillar inner panel 36, the lower flange portion 26B of the rocker reinforcement 26, and the lower flange portion 22B of the rocker outer panel 22 are overlapped. More specifically, the center pillar inner member is sandwiched between the lower flange portion 20B of the rocker inner panel 20 and the lower flange portion 26B of the rocker reinforcement 26. The panel 36 is disposed on the inner side in the vehicle width direction and is spot-welded at the lower overlapping portion 84.

Also with the above configuration, the same operations and effects as those of the first embodiment described above can be obtained. Further, in the present embodiment, since the lower wall portion 82 can be more firmly attached, when a load acting in the direction of crushing the overlapping portion 62 to the substantially vehicle lower side via the hinge retainer 80 at the time of a side collision, The load can be supported more stably.
[Supplementary explanation of the embodiment]

  In the above embodiment, the overlapping bead 62 of the upper flange portion 20A of the rocker inner panel 20, the center pillar inner panel 36, and the upper flange portion 26A of the rocker reinforcement 26 has a reinforcing bead extending along the vehicle vertical direction. 64 is formed, and such a configuration is preferable. However, it is also possible to adopt a configuration in which a reinforcing bead is not formed in the overlapping portion of the upper flange portion of the rocker inner panel, the center pillar inner panel, and the upper flange portion of the rocker reinforcement. It is.

  Further, in the first and third embodiments, the lower wall portions 58 and 82 of the hinge retainers 50 and 80 are sandwiched between the upper flange portion 20A of the rocker inner panel 20 and the upper flange portion 26A of the rocker reinforcement 26. For example, the lower wall portion of the hinge retainer is disposed between the upper flange portion of the rocker inner panel and the upper flange portion of the rocker reinforcement. You may arrange | position on the vehicle width direction outer side of a center pillar inner panel in the clamped state.

  Furthermore, in the said embodiment, although the lower wall parts 58, 74, and 82 of the hinge retainers 50, 70, and 80 are flat form, the reinforcement extended along a vehicle up-down direction to the lower wall part of a hinge retainer. A bead may be formed.

1 is a perspective view showing an overall configuration of a vehicle body side part structure according to a first embodiment of the present invention as viewed from the inside in a vehicle width direction. FIG. 2 is an enlarged vertical cross-sectional view showing a main part of the vehicle body side part structure according to the first embodiment of the present invention (shown by a cross section along line 2-2 in FIG. 1). FIG. 3 is an enlarged longitudinal sectional view showing a side part of a vehicle body in a side collision state in the first embodiment of the present invention. FIG. 6 is an enlarged longitudinal sectional view showing a main part of a vehicle body side part structure according to a second embodiment of the present invention. FIG. 6 is an enlarged longitudinal sectional view showing a main part of a vehicle body side part structure according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car body side part 20 Rocker inner panel 20A Upper flange part of rocker inner panel 20B Lower flange part of rocker inner panel 26 Rocka reinforcement 26A Upper flange part of Rocka reinforcement 26B Lower flange part of Rocka reinforcement 36 Center pillar inner panel 42 Center pillar reinforcement 50 Hinge retainer 54 Upper wall portion 56 Intermediate wall portion (connection wall portion)
58 Lower wall part 60 Side wall part (connection wall part)
62 Superposition part 64 Reinforcement bead 70 Hinge retainer 72 Middle wall part (connection wall part)
74 Lower wall portion 80 Hinge retainer 82 Lower wall portion

Claims (3)

A rocker inner panel disposed at the lower end of the vehicle body side with the vehicle longitudinal direction as the longitudinal direction;
Rocker reinforcement which is arranged with the vehicle front-rear direction as the longitudinal direction outside the rocker inner panel in the vehicle width direction, and forms a closed cross-section with the rocker inner panel;
The vehicle is arranged in the vehicle longitudinal direction intermediate portion of the vehicle body side with the vehicle vertical direction as the longitudinal direction, and the lower part is sandwiched between the rocker inner panel vertical flange portion and the rocker reinforcement vertical flange portion. Center pillar inner panel installed,
A center pillar reinforcement that is disposed outside the center pillar inner panel in the vehicle width direction with the vehicle vertical direction as a longitudinal direction, forms a closed cross-section with the center pillar inner panel, and has a lower end coupled to the rocker reinforcement. ,
An upper wall portion for fixing a door hinge fixed to a lower portion of the center pillar reinforcement, an upper flange of the rocker inner panel that extends substantially in the vehicle vertical direction on the vehicle width direction inner side and the vehicle lower side of the upper wall portion. A lower wall portion joined to a superposed portion of the upper pillar portion of the center pillar inner panel and the rocker reinforcement, and a connecting wall portion integrally connecting the upper wall portion and the lower wall portion. Hinge retainer,
The vehicle body side part structure characterized by having.   The vehicle body side part structure according to claim 1, wherein a reinforcing bead extending along a vehicle vertical direction is formed in the overlapping portion.   The said lower wall part is arrange | positioned in the state clamped between the upper flange part of the said rocker inner panel, and the upper flange part of the said rocker reinforcement, The Claim 1 or Claim 2 characterized by the above-mentioned. Car body side structure.

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