JP2012086732A - Vehicle body frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deformation of a bent part formed at a first frame section.SOLUTION: The vehicle body frame structure 10 comprises a side frame member 12 extending in a vehicle longitudinal direction and a roof header panel 14 extended in a vehicle width direction. The outside end part in the vehicle width direction at the roof header panel 14 is integrally formed with a bent part 68 that is arranged closer to an outer periphery part 24C of a bent part 24 than an inner periphery part 24B of the bent part 24 formed at the side frame member 12 and that is bent to protrude at the inner periphery part 24B. The bent part 68 has a pair of flanges 70, 72 formed on both faces extending in a direction along its bending shape. The flanges 72, 74 are connected with the outer periphery part 24C at the bent part 24. Even if a certain moment acts on the bent part 24 in a direction of bending and deforming the bent part 24, this moment is reduced (canceled) by the bent part 68.

Description

  The present invention relates to a vehicle body skeleton structure.

  Patent Document 1 discloses an upper body structure of an automobile in which an end portion on the outer side in the vehicle width direction of the front header is coupled to a wall portion on the inner side in the vehicle width direction at a connecting portion between the roof side rail and the front pillar. .

JP 2007-30716 A Japanese Utility Model Publication No. 3-100575 JP 2000-264247 A JP 2005-329789 A

  However, in the example described in Patent Document 1, when a moment acts in a direction in which the connecting portion is bent and deformed with respect to the connecting portion between the roof side rail and the front pillar, the connecting portion may be bent and deformed. There is.

  The present invention has been made in view of the above problems, and even when a moment acts in a direction in which the bent portion is bent and deformed with respect to the bent portion of the first skeleton portion, the bent portion is bent and deformed. An object of the present invention is to provide a vehicle body skeleton structure capable of suppressing this.

  In order to solve the above-described problem, the vehicle body skeleton structure according to claim 1 is formed in a long shape and has a first skeleton portion having a bent portion bent in a direction orthogonal to the longitudinal direction, and the first skeleton portion. A second skeleton portion formed in a long shape along a direction intersecting with a longitudinal direction of the skeleton portion and a bending direction of the bent portion, and provided at an end of the second skeleton portion on the end side in the longitudinal direction. The coupling is disposed on the outer peripheral side of the bent portion with respect to the inner peripheral portion of the bent portion, and is curved so as to be convex toward the inner peripheral portion, and formed on at least both sides in the direction along the curved shape. And a curved portion coupled to the bent portion by a portion.

  According to this vehicle body skeleton structure, the end portion on the longitudinal direction end side of the second skeleton portion is disposed closer to the outer peripheral portion side of the bent portion than the inner peripheral portion of the bent portion formed in the first skeleton portion. A curved portion that is curved so as to be convex is provided on the inner peripheral side. The curved portion is coupled to the bent portion by coupling portions formed on at least both sides in the direction along the curved shape. Therefore, even if a moment acts in a direction in which the bent portion is bent and deformed with respect to the bent portion, the moment can be reduced (cancelled) by the curved portion. Thereby, it can suppress that a bending part is bending-deformed.

  The vehicle body skeleton structure according to claim 2 is the vehicle body skeleton structure according to claim 1, wherein a cross-sectional shape of the first skeleton portion cut in a direction orthogonal to a longitudinal direction is a closed cross-sectional shape, and the curved portion Is inserted into the first skeleton part and forms a closed cross section with a part of the first skeleton part.

  According to this vehicle body skeleton structure, the bending portion is inserted into the first skeleton portion formed in a closed cross-sectional shape, and forms a closed cross-section portion with a part of the first skeleton portion. Thereby, since the rigidity of a bending part is improved, it can suppress further that a bending part is bending-deformed, and can improve the joint rigidity of a 1st skeleton part and a 2nd skeleton part. .

  The vehicle body skeleton structure according to claim 3 is the vehicle body skeleton structure according to claim 1 or claim 2, wherein the bent portion is formed with a side wall portion connecting the inner peripheral portion and the outer peripheral portion. The coupling portion is formed on both sides in the direction along the curved shape of the curved portion, and between the first coupling portion coupled to the outer peripheral portion and the first coupling portion in the direction along the curved shape of the curved portion. And a second coupling portion formed in the intermediate portion and coupled to the side wall portion.

  According to this vehicle body skeleton structure, since the bending portion is coupled to the outer peripheral portion and the side wall portion of the bending portion by the first coupling portion and the second coupling portion, the coupling rigidity of the bending portion to the first skeleton portion, As a result, the joint rigidity of a 1st skeleton part and a 2nd skeleton part can be improved.

  The vehicle body skeleton structure according to claim 4 is the vehicle body skeleton structure according to claim 3, wherein the side wall portion is constituted by a pair of side wall portions opposed to each other in a longitudinal direction of the second skeleton portion. The portion is coupled to one of the pair of side wall portions, and the coupling portion includes a third coupling portion coupled to the other of the pair of side wall portions.

  According to this vehicle body skeleton structure, since the bending portion is coupled to the other side wall portion of the bent portion by the third coupling portion, the coupling rigidity between the first skeleton portion and the second skeleton portion can be further improved. Can do.

  The vehicle body skeleton structure according to claim 5 is the vehicle body skeleton structure according to any one of claims 1 to 4, wherein a top portion of the curved portion is perpendicular to a longitudinal direction of the first skeleton portion. It is set as the structure located in the said inner peripheral part side rather than the centroid of the cross section cut | disconnected in this.

  According to this vehicle body skeleton structure, the top of the curved portion is positioned closer to the inner peripheral side of the bent portion than the centroid of the closed cross-sectional portion formed by the first skeleton portion. Therefore, even if a moment acts on the bent portion in a direction in which the bent portion is bent and deformed, the moment can be reduced (cancelled) more effectively by the curved portion.

  A vehicle body skeleton structure according to a sixth aspect is the vehicle body skeleton structure according to the fifth aspect, wherein the curved portion is formed integrally with the second skeleton portion.

  According to this vehicle body skeleton structure, since the curved portion is formed integrally with the second skeleton portion, an increase in the number of parts can be suppressed.

  As described above in detail, according to the present invention, even if a moment acts on the bent portion of the first skeleton portion in the direction in which the bent portion is bent and deformed, the bent portion is prevented from being bent and deformed. can do.

It is the perspective view which looked at the body frame structure concerning a first embodiment of the present invention from the vehicle left front upper part. FIG. 2 is a side view of the vehicle body skeleton structure shown in FIG. 1 viewed from the left side of the vehicle. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. It is the figure which showed typically the front pillar shown in FIG. 1, a roof side rail, a roof header panel, and a curved part. It is explanatory drawing for demonstrating the moment reduction effect of the curved part shown by FIG. It is the perspective view which looked at the vehicle body frame structure concerning a second embodiment of the present invention from the vehicle left front upper part.

[First embodiment]
First, a first embodiment of the present invention will be described.

  In addition, arrow UP, arrow FR, and arrow LH which are shown in each figure have each shown the vehicle up-down direction upper side, the vehicle front-back direction front side, and the vehicle width direction outer side (left side). In FIG. 2, the side outer panel and the roof panel shown in FIG. 1 are omitted.

  As shown in FIG. 1, the vehicle body skeleton structure 10 according to the first embodiment of the present invention includes a side skeleton member 12 (first skeleton part) and a roof header panel 14 (second skeleton part). . The side skeleton member 12 is formed in a long shape extending in the vehicle front-rear direction, along the roof side rail 18 provided on the vehicle width direction outer side of the roof portion 16, and the vertical edge 20 </ b> A of the windshield glass 20. And a front pillar 22 provided.

  The roof side rail 18 is formed substantially horizontally, and the front pillar 22 is inclined with respect to the horizontal direction so as to go to the vehicle lower side as it goes to the vehicle front side. Between the roof side rail 18 and the front pillar 22, a bent portion 24 that is bent toward the vehicle lower side with respect to the roof side rail 18 is formed (see also FIG. 2).

  The side skeleton member 12 includes an inner panel 26 and a reinforcement 28. The inner panel 26 has an upper flange 30, an inner wall portion 32, a lower wall portion 34, and a lower flange 36. The upper flange 30 extends inward in the vehicle width direction, and the inner wall portion 32 extends in the vehicle vertical direction and connects the upper flange 30 and the lower wall portion 34. The lower wall portion 34 extends from the vehicle lower side end portion of the inner wall portion 32 toward the vehicle width direction outer side, and the lower flange 36 extends from the vehicle width direction outer end portion of the lower wall portion 34 to the vehicle lower side. It extends towards the side.

  Further, a portion constituting the bent portion 24 in the inner wall portion 32, that is, a side wall portion 24A (one side wall portion) on the inner side in the vehicle width direction of the bent portion 24 is a curved portion formed in the roof header panel 14 described later. A semicircular cutout 38 that matches the cross-sectional shape of 68 is formed. A flange portion 39 that is curved along the outer edge of the notch 38 is formed on the side wall portion 24 </ b> A continuously with the upper flange 30.

  The reinforcement 28 has an upper flange 40, an upper wall portion 41, an outer wall portion 42, a lower wall portion 44, and a lower flange 46. The upper flange 40 extends from the end of the upper side wall portion 41 on the inner side in the vehicle width direction toward the inner side in the vehicle width direction, and overlaps the upper flange 30 from the upper side of the vehicle. The upper side wall portion 41 extends in the vehicle width direction and faces the lower side wall portions 34 and 44 in the vehicle vertical direction. The outer side wall portion 42 is opposed to the inner side wall portion 32 in the vehicle width direction, extends in the vehicle vertical direction, and connects the upper side wall portion 41 and the lower side wall portion 44. The lower wall portion 44 extends from the vehicle lower side end portion of the outer wall portion 42 toward the vehicle width direction inner side, and the lower flange 46 extends from the vehicle width direction inner end portion of the lower wall portion 44 to the vehicle lower side. It extends toward the side and is superimposed on the lower flange 36 from the outside in the vehicle width direction.

  The side skeleton member 12 is integrally provided with a side outer panel 48 over the entire length in the vehicle longitudinal direction. The side outer panel 48 is provided on the outer side in the vehicle width direction of the reinforcement 28, and the upper flange 50 is overlapped on the upper flange 40 from the upper side of the vehicle, and the lower flange is overlapped on the lower flange 46 from the outer side in the vehicle width direction. 56.

  A roof panel 58 that extends in the vehicle front-rear direction and the vehicle width direction and forms the roof portion 16 is provided on the inner side of the side skeleton member 12 in the vehicle width direction. A flange 60 extending in the vehicle front-rear direction is formed at the outer end of the roof panel 58 in the vehicle width direction. The flange 60 overlaps the upper flange 50 from the upper side of the vehicle.

  The flange 60 and the upper flanges 30, 40, 50 are joined by, for example, spot welding at a plurality of positions spaced in the vehicle front-rear direction. Similarly, the lower flanges 36, 46, and 56 are joined by, for example, spot welding at a plurality of locations spaced in the vehicle front-rear direction.

  Further, the side skeleton member 12 constituted by the inner panel 26 and the reinforcement 28 coupled to each other as described above has a closed cross-sectional shape cut in a direction perpendicular to the longitudinal direction. That is, a closed cross-section portion 66 is formed by the inner wall portion 32, the upper wall portion 41, the outer wall portion 42, and the lower wall portions 34 and 44.

  The roof header panel 14 is formed in a long shape extending in the vehicle width direction, and is disposed on the front portion 16 </ b> A of the roof portion 16. A curved portion 68 is formed at the outer end of the roof header panel 14 in the vehicle width direction. The curved portion 68 is inserted into the above-described closed cross-section portion 66 formed by the side skeleton member 12, and is disposed closer to the outer peripheral portion 24C of the bent portion 24 than the inner peripheral portion 24B of the bent portion 24 ( (See also FIG. 2). The curved portion 68 is curved so as to protrude toward the inner peripheral portion 24B of the bent portion 24. That is, the curved portion 68 has a curved shape opposite to the bent portion 24. The inner peripheral portion 24B of the bent portion 24 is configured by a portion constituting the bent portion 24 in the lower side wall portions 34, 44, and the outer peripheral portion 24C of the bent portion 24 includes the upper side wall portion 41, the upper flange 30, It is comprised by the part which comprises the bending part 24 in 40. FIG.

  The curved portion 68 is formed with a pair of flanges 70 and 72 (first coupling portions) at both end portions in the direction along the curved shape. One flange 70 extends toward the vehicle front side, and the other flange 72 extends toward the vehicle rear side. Further, an end portion 68A (second coupling portion) between the pair of flanges 70 and 72 and on the inner side in the vehicle width direction of the bending portion 68 is overlapped with the flange portion 39 from the vehicle upper side (see also FIG. 3). .

  Further, a flange 74 (third coupling portion) is formed along the outer edge of the curved portion 68 at the end of the curved portion 68 on the outer side in the vehicle width direction. The flange 74 extends outward in the radial direction of the curved portion 68 and is formed integrally with the curved portion 68 and the pair of flanges 70 and 72. This flange 74 is overlapped from the inner side in the vehicle width direction on a portion constituting the bent portion 24 in the outer wall portion 42, that is, on the side wall portion 24D (the other side wall portion) on the outer side in the vehicle width direction in the bent portion 24 (see FIG. (See also 3).

  One flange 70 is sandwiched between the flange portions 30A and 40A adjacent to the vehicle front side of the notch 38 in the upper flanges 30 and 40, and the flange portions 30A and 40A and a welded portion, for example, by spot welding. 76 (see also FIG. 2). The other flange 72 is sandwiched between the flange portions 30B and 40B adjacent to the rear side of the notch 38 in the upper flanges 30 and 40 and welded to the flange portions 30B and 40B, for example, by spot welding. They are connected by part 78 (see also FIG. 2). The flange portions 30A, 30B, 40A, 40B constitute a part of the outer peripheral portion 24C in the bent portion 24.

  Further, the end portion 68A on the inner side in the vehicle width direction of the curved portion 68 is coupled to the flange portion 39 by a welded portion 80 (see FIG. 3) by arc welding, for example, extending along the curved shape. Further, the flange 74 is coupled to the side wall portion 24D by a plurality of, for example, spot welded welds 82 arranged in a direction along the curved shape of the flange 74 (see also FIG. 3).

  The curved portion 68 coupled to the side skeleton member 12 as described above is the outer peripheral portion 24 </ b> C of the bent portion 24 that is a part of the side skeleton member 12, and the closed sectional portion 66 is included in the closed sectional portion 66. A closed cross-sectional portion 86 different from the above is formed (see also FIG. 2). Further, as shown in FIG. 2, the apex portion 68 </ b> B of the curved portion 68 is bent more than the centroid of the cross section cut in the direction perpendicular to the longitudinal direction of the side skeleton member 12, that is, the centroid 66 </ b> A of the closed cross section 66. The portion 24 is located on the inner peripheral portion 24B side.

  As shown in FIG. 1, a portion on the inner side in the vehicle width direction of the end portion on the outer side in the vehicle width direction on the roof header panel 14 in which the curved portion 68 and the pair of flanges 70 and 72 are formed is the roof header panel 14. The main body 14A is formed. The main body portion 14A is formed in a hat shape in cross section similar to the end portion on the outer side in the vehicle width direction of the roof header panel 14 in which the curved portion 68 and the pair of flanges 70 and 72 are formed.

  Further, flanges 90 and 92 are formed in the main body portion 14A so as to be continuous with the flanges 70 and 72 in the vehicle width direction. The flange 90 on the front side of the vehicle is joined to the flange 94 formed at the end portion on the front side of the vehicle on the roof panel 58 by, for example, spot welding in a state of being overlapped from the lower side of the vehicle. On the other hand, the flange 92 on the rear side of the vehicle is bonded to the front portion 16A of the roof panel 58 with, for example, an adhesive (not shown).

  In the present embodiment, the vehicle vertical direction that is the bending direction of the bending portion 24 corresponds to the direction orthogonal to the longitudinal direction of the first skeleton portion in the present invention, and the vehicle width direction that is the longitudinal direction of the roof header panel 14. Corresponds to the direction crossing the longitudinal direction of the first skeleton part and the bending direction of the bent part in the present invention.

  Next, the operation and effect of the first embodiment of the present invention will be described.

  According to the vehicle body skeleton structure 10, the roof header panel 14 is disposed at the outer end in the vehicle width direction on the outer peripheral portion 24 </ b> C side of the bent portion 24 rather than the inner peripheral portion 24 </ b> B of the bent portion 24. A curved portion 68 that is curved so as to protrude toward the peripheral portion 24B is integrally formed. The curved portion 68 is formed with a pair of flanges 70 and 72 on both sides in the direction along the curved shape, and the flanges 70 and 72 are coupled to the outer peripheral portion 24 </ b> C of the bent portion 24. Therefore, even if a moment acts on the bent portion 24 in the direction in which the bent portion 24 is bent and deformed, the moment can be reduced (cancelled) by the curved portion 68. Thereby, it can suppress that the bending part 24 is bending-deformed.

  As a result, for example, even when a load is input to the vehicle body from a suspension or the like (not shown), the bent portion 24 can be prevented from being bent and deformed, so that the windshield glass 20 vibrates together with the roof header panel 14. Can be suppressed. Thereby, it can suppress that abnormal noises, such as a booming sound, arise in a room. For example, even when the vehicle rolls over and a large load is input to the bent portion 24, the bent portion 24 can be prevented from being bent and deformed.

  The curved portion 68 is inserted into a closed cross-section portion 66 formed on the side skeleton member 12, and forms a closed cross-section portion 86 with the outer peripheral portion 24 </ b> C of the bent portion 24 that is a part of the side skeleton member 12. is doing. Accordingly, since the rigidity of the bent portion 24 is thereby improved, the bending portion 24 can be further prevented from being bent and deformed, and the coupling rigidity between the side skeleton member 12 and the roof header panel 14 is improved. Can be made.

  The curved portion 68 is coupled to the outer peripheral portion 24C of the bent portion 24 by a pair of flanges 70 and 72, and is coupled to a flange portion 39 formed on the side wall portion 24A by an end portion 68A on the inner side in the vehicle width direction. Therefore, the joint rigidity of the curved portion 68 with respect to the side skeleton member 12, and consequently the joint rigidity between the side skeleton member 12 and the roof header panel 14 can be improved.

  Further, since the curved portion 68 is coupled to the side wall portion 24D of the bent portion 24 by a flange 74 formed at the outer end in the vehicle width direction, the coupling rigidity between the side skeleton member 12 and the roof header panel 14 is further increased. This can be further improved.

  Further, the apex portion 68B of the bending portion 68 is positioned closer to the inner peripheral portion 24B side of the bent portion 24 than the centroid 66A of the closed cross-section portion 66 formed by the side skeleton member 12. Therefore, even if a moment acts on the bending portion 24 in a direction in which the bending portion 24 is bent and deformed, the moment can be further effectively reduced (cancelled) by the bending portion 68.

  Moreover, since the curved part 68 is integrally formed in the roof header panel 14, the increase in a number of parts can be suppressed.

  In the first embodiment of the present invention, the curved portion 68 and the pair of flanges 70 and 72 are formed integrally with the roof header panel 14, but are separate from the main body portion 14A of the roof header panel 14. It may be configured.

  Further, as shown in FIG. 4, the bending portion 68 is provided between the roof side rail 18 and the front pillar 22 and supports them, so that the bending portion 68 is formed as large as possible and the bending portion is formed. When the curvature of 68 is made as large as possible, the effect of suppressing deformation of the bent portion 24 can be further improved.

  Here, referring to FIG. 5, when a load is input to the linear reinforcing portion 168, a load is input to the moment generated in the linear reinforcing portion 168 and the bending portion 68 of the present embodiment. The difference from the moment generated in the curved portion 68 in the case of the above will be described.

  First, as shown in FIGS. 5A and 5C, when the concentrated load W is input to the linear reinforcing portion 168, the reinforcing portion 168 has a maximum at the point of application of the concentrated load W. Moment M1 acts. On the other hand, as shown in FIGS. 5B and 5C, when the concentrated load W is input to the bending portion 68 of the present embodiment, the moment M2 that becomes maximum at the point of application of the concentrated load W is increased. Works. However, the maximum value M2max of the moment M2 is smaller than the maximum value M1max of the moment M1.

  This is because the fulcrum reaction forces F and F act on the bending portion 68 from the fulcrums R1 and R2 supporting the bending portion 68 in the center direction of the bending portion 68, thereby generating a cancel moment M3. .

  That is, the fulcrum reaction forces F and F are generated at both end portions of the bending portion 68 that is bent with respect to the input direction of the load W, whereby the moment acting on the bending portion 68 can be reduced. This is equivalent to improving the rigidity of the bending portion 68 with respect to the input load by applying a canceling moment to the bending portion 68.

  As described above, since the moment acting on the bending portion 68 can be reduced, the rigidity of the bending portion 68 and consequently the rigidity of the bending portion 24 (see FIGS. 1 and 2) can be improved.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  As described above, the vehicle body skeleton structure 10 (see FIG. 1) according to the first embodiment of the present invention is based on the side skeleton member 12 constituting the roof side rail 18 and the front pillar 22 and the roof header panel 14. Although applied, the vehicle body skeleton structure 110 according to the second embodiment of the present invention shown in FIG. 6 is applied to the rear floor side member 112, the floor cross member 114, and the rear floor panel 158.

  The rear floor side member 112 is coupled to the rear floor panel 158 from the lower side of the vehicle, and a part of the rear floor panel 158 constitutes a side member portion 118. The basic structure of the vehicle body skeleton structure 110 according to the second embodiment of the present invention is the same as the vehicle body skeleton structure 10 according to the first embodiment of the present invention described above. That is, the side member portion 118 is a member corresponding to the above-described side skeleton member 12, and the floor cross member 114 is a member corresponding to the above-described roof header panel 14. Therefore, in the second embodiment of the present invention, the same reference numerals are used for the same structures as in the first embodiment of the present invention, and the description thereof is omitted.

  Even if comprised in this way, there can exist an effect | action and effect similar to 1st embodiment of the above-mentioned this invention.

  That is, according to the vehicle body skeleton structure 110, the floor cross member 114 is disposed at the outer end in the vehicle width direction on the outer peripheral portion 24C side of the bent portion 24 rather than the inner peripheral portion 24B of the bent portion 24. A curved portion 68 that is curved so as to protrude toward the inner peripheral portion 24B is integrally formed. The curved portion 68 is formed with a pair of flanges 70 and 72 on both sides in the direction along the curved shape. The flanges 72 and 74 are formed of flange portions 30A and 30B constituting the outer peripheral portion 24C of the bent portion 24, and It is combined with a part of the rear floor panel 158. Therefore, even if a moment acts on the bent portion 24 in the direction in which the bent portion 24 is bent and deformed, the moment can be reduced (cancelled) by the curved portion 68. Thereby, it can suppress that the bending part 24 is bending-deformed.

  As a result, for example, even when a load is input to the vehicle body from a suspension or the like (not shown), it is possible to suppress the bending portion 24 from being bent and deformed. Can be suppressed. Thereby, it can suppress that abnormal noises, such as a booming sound, arise in a room. Further, for example, even when a rear collision occurs in the vehicle and a large load is input to the bent portion 24, the bent portion 24 can be prevented from being bent and deformed.

  Further, the bending portion 68 is inserted into a closed cross section 66 formed in the side member portion 118, and forms a closed cross section 86 with a part of the rear floor panel 158. Accordingly, since the rigidity of the bent portion 24 is improved, the bending portion 24 can be further prevented from being bent and deformed, and the coupling rigidity between the side member portion 118 and the floor cross member 114 is improved. Can be made.

  Further, the curved portion 68 is coupled to a part of the flange portions 30A and 30B and the rear floor panel 158 constituting the outer peripheral portion 24C of the bent portion 24 by a pair of flanges 70 and 72, and at the end 68A on the inner side in the vehicle width direction. Is connected to the flange portion 39 formed on the side wall portion 24A of the bent portion 24, so that the coupling rigidity of the curved portion 68 to the side member portion 118, and hence the coupling rigidity between the side member portion 118 and the floor cross member 114 is increased. Can be improved.

  Further, since the curved portion 68 is coupled to the side wall portion 24D of the bent portion 24 by a flange 74 formed at the outer end portion in the vehicle width direction, the coupling rigidity between the side member portion 118 and the floor cross member 114 is further increased. This can be further improved.

  Further, the apex portion 68B of the bending portion 68 is positioned on the inner peripheral portion 24B side of the bent portion 24 with respect to the centroid 66A of the closed section 66 formed by the side member portion 118 (see also FIG. 2). Therefore, even if a moment acts on the bending portion 24 in a direction in which the bending portion 24 is bent and deformed, the moment can be further effectively reduced (cancelled) by the bending portion 68.

  Further, since the curved portion 68 is formed integrally with the floor cross member 114, an increase in the number of parts can be suppressed.

  In the second embodiment of the present invention, the curved portion 68 and the pair of flanges 70 and 72 are formed integrally with the floor cross member 114, but are separate from the main body portion 14A of the floor cross member 114. It may be configured.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

  Next, in addition to the invention described in the claims, the technical idea that can be grasped from the above embodiment will be described together with the effects thereof.

  That is, the first skeleton portion is formed in a long shape extending in the vehicle front-rear direction, and is provided along the vertical edges of the roof side rail and the windshield glass provided on the vehicle width direction outer side of the roof portion. The second skeleton portion is formed in a long shape extending in the vehicle width direction, and is a roof header panel disposed at the front portion of the roof portion. The vehicle body skeleton structure according to any one of claims 1 to 6.

  According to this vehicle body skeleton structure, for example, even when a load is input to the vehicle body from a suspension or the like (not shown), it is possible to prevent the bent portion from being bent and deformed, and thus the windshield glass vibrates together with the roof header panel. Can be suppressed. Thereby, it can suppress that abnormal noises, such as a booming sound, arise in a room. For example, even when the vehicle rolls over and a large load is input to the bent portion, the bent portion can be prevented from being bent and deformed.

  The first skeleton portion is formed in a long shape extending in the vehicle front-rear direction, and is a side member portion configured by a rear floor side member and a part of the rear floor panel, and the second skeleton portion is The vehicle body skeleton structure according to any one of claims 1 to 6, wherein the floor cross member is formed in an elongated shape extending in a vehicle width direction.

  According to this vehicle body skeleton structure, for example, even when a load is input to the vehicle body from a suspension or the like (not shown), the bending portion can be prevented from being bent and deformed, so that the rear floor panel vibrates together with the floor cross member. This can be suppressed. Thereby, it can suppress that abnormal noises, such as a booming sound, arise in a room. Further, for example, even when a rear collision occurs in the vehicle and a large load is input to the bent portion, the bent portion can be prevented from being bent and deformed.

10, 110 Car body frame structure 12 Side frame member (first frame part)
14 Roof header panel (second frame)
24 Bent part 24A Side wall part (one side wall part)
24B Inner peripheral part 24C Outer peripheral part 24D Side wall part (the other side wall part)
66A centroid 68 curved portion 68A end (part of the coupling portion, second coupling portion)
68B Top portion 70, 72 Flange (part of coupling portion, first coupling portion)
74 Flange (part of joint, third joint)
86 Closed section 118 Side member part (first skeleton part)
158 Rear floor panel (second frame)

Claims (6)

A first skeleton portion that is formed in a long shape and has a bent portion that is bent in a direction perpendicular to the longitudinal direction;
A second skeleton portion formed in a long shape along a direction intersecting with a longitudinal direction of the first skeleton portion and a bending direction of the bent portion;
It is provided at the end of the second skeleton portion on the longitudinal direction end side, is disposed closer to the outer peripheral portion side of the bent portion than the inner peripheral portion of the bent portion, and protrudes toward the inner peripheral portion side. A curved portion coupled to the bent portion by coupling portions formed on at least both sides in a direction along the curved shape,
Body frame structure with The first skeleton portion has a closed cross-sectional shape cut in a direction orthogonal to the longitudinal direction,
The curved portion is inserted into the first skeleton portion and forms a closed cross-section portion with a part of the first skeleton portion.
The vehicle body skeleton structure according to claim 1. In the bent portion, a side wall portion that connects the inner peripheral portion and the outer peripheral portion is formed,
The coupling portion is
A first coupling portion formed on both sides in a direction along the curved shape of the curved portion and coupled to the outer peripheral portion;
A second coupling portion formed at an intermediate portion between the first coupling portions in a direction along the curved shape of the curved portion, and coupled to the side wall portion;
have,
The vehicle body skeleton structure according to claim 1 or 2. The side wall part is constituted by a pair of side wall parts facing in the longitudinal direction of the second skeleton part,
The second coupling portion is coupled to one of the pair of side wall portions,
The coupling portion has a third coupling portion coupled to the other of the pair of side wall portions.
The vehicle body skeleton structure according to claim 3. The apex of the curved portion is positioned on the inner peripheral side with respect to the centroid of a cross section cut in a direction orthogonal to the longitudinal direction of the first skeleton portion.
The vehicle body skeleton structure according to any one of claims 1 to 4. The curved portion is formed integrally with the second skeleton portion.
The vehicle body skeleton structure according to claim 5.