JP2020203554A - Upper vehicle body structure of vehicle - Google Patents

Abstract

To provide an upper vehicle body structure of a vehicle which enables reduction of entry of a pillar into a vehicle cabin through displacement suppression of roof side rails during a lateral collision.SOLUTION: An upper vehicle body structure of a vehicle includes: a pair of left and right roof side rails 10; a pair of left and right B pillars 5; a roof reinforcement 30 which connects middle parts of the pair of roof side rails 10 in a vehicle width direction; and a pair of left and right gussets 40 which reinforce areas where the pair of B pillars 5 and the roof reinforcement 30 are joined. Each roof side rail 10 has a roof rail outer 11 and a roof rail inner 12. Each gusset 40 is disposed between an inner portion as seen in the vehicle width direction of the roof rail inner 12 and the roof reinforcement 30. The roof rail outer 11 is joined to overlap with the roof reinforcement 30 and the gusset 40 in a vertical direction above the gusset 40.SELECTED DRAWING: Figure 3

Description

The present invention relates to an upper vehicle body structure of a vehicle including a pair of left and right roof side rails and a roof reinforcement that connects the intermediate portions of the pair of roof side rails in the vehicle width direction.

Conventionally, a pair of left and right roof side rails connected to both ends of the roof panel in the vehicle width direction and extending in the front-rear direction of the vehicle body, and a pair of left and right roof side rails extending vertically and downward from the middle of these pairs of roof side rails. A roof reinforcement that connects the center pillar and the middle part of the pair of roof side rails in the vehicle width direction, and a pair of left and right gussets that reinforce between the pair of center pillars and the roof reinforcement. The upper body structure equipped with is known.

The upper body structure of the vehicle of Patent Document 1 has a roof side rail having a roof rail outer (roof side stiffener) and a roof rail inner that cooperates with the roof rail outer to form a closed cross section extending in the front-rear direction. The tongue pieces formed at the left and right ends of the force (roof arch) are joined to the upper surface of the inner end of the roof rail outer in the vehicle width direction, and the gusset is fastened to the roof rail inner and roof reinforcement via bolts. It is fixed. As a result, the collision load input to the center pillar is distributed to the path transmitted from the center pillar to the roof reinforcement via the roof rail outer and the path transmitted from the center pillar to the roof reinforcement via the gusset. Therefore, it is possible to suppress the cross-sectional collapse of the roof side rail, and the size of the member is reduced.

By the way, various techniques for suppressing the deformation of the pillar member inward in the vehicle width direction have been proposed for the purpose of ensuring the safety of the occupant in the event of a side collision of the vehicle.
As shown in FIG. 10, the bending rigidity of the upper member corresponding to about 2/3 of the upper side of the center pillar 53 connecting between the roof side rail 51 and the side sill 52 is reduced to that of the lower member corresponding to about 1/3 of the lower side. By making it larger than the flexural rigidity, the bending deformation angle of the lower member can be made larger than the bending deformation angle of the upper member, and the maximum displacement amount of the center pillar 53 inward in the vehicle width direction can be reduced.

Japanese Patent No. 5548687

As shown in FIG. 10, when a collision load toward the inside in the vehicle width direction is input to the center pillar 53 at the time of a side collision of the vehicle, the roof side rail 51 is subjected to the displacement of the center pillar 53 in the vehicle width direction and up and down in the vehicle width direction. A force acting downward in the direction acts, and as a result, the roof side rail 51 may be displaced inward and downward in the vehicle width direction. That is, by suppressing the cross-sectional collapse caused by the displacement of the roof side rail 51 inward and downward in the vehicle width direction, it is possible to reduce the intrusion of the center pillar 53 into the vehicle width direction.

In the upper body structure of the vehicle of Patent Document 1, two load paths (load paths) are formed to disperse the collision load. However, although the gusset is joined to the roof rail inner from the vehicle interior side, it is not joined to the roof rail outer, so it does not contribute to the reinforcement of the roof rail outer at all. That is, at the time of a side collision of the vehicle, the reduction of the amount of penetration of the center pillar into the vehicle width direction is not sufficient, and there is room for improvement.

An object of the present invention is to provide an upper vehicle body structure or the like of a vehicle capable of reducing intrusion of pillars into the vehicle interior by suppressing displacement of the roof side rail at the time of a side collision.

The upper vehicle body structure of the vehicle according to claim 1 is a pair of left and right roof side rails connected to both ends of the roof panel in the vehicle width direction and extending in the front-rear direction of the vehicle body, and the vehicle body up and down from the middle of the pair of roof side rails. Reinforces between a pair of left and right pillars extending downward in each direction, a roof reinforcement that connects the middle part of the pair of roof side rails in the vehicle width direction, and the pair of pillars and roof reinforcement. In the upper vehicle body structure of a vehicle equipped with a pair of left and right gussets, the roof side rails are closed by the roof rail outer forming the outer wall portion in the vehicle width direction and the roof rail outer extending in the front-rear direction of the vehicle body in cooperation with the roof rail outer. It has a roof rail inner that forms a cross section, the gusset is erected between the inner portion of the roof rail inner in the vehicle width direction and the roof reinforcement, and the roof rail outer is above the gusset. It is characterized by being joined to the forcement and gusset so as to overlap in the vertical direction of the vehicle body.

In the upper body structure of this vehicle, the roof side rail has a roof rail outer that constitutes an outer wall portion in the vehicle width direction, and a roof rail inner that cooperates with the roof rail outer to form a closed cross section extending in the front-rear direction of the vehicle body. However, since the gusset is erected between the inner portion of the roof rail inner in the vehicle width direction and the roof reinforcement, the gusset causes the roof rail inner to be displaced inward and downward in the vehicle width direction in the event of a side collision of the vehicle. It can be suppressed. Since the roof rail outer is joined to the roof reinforcement and the gusset on the upper side of the gusset so as to overlap in the vehicle body vertical direction, the gusset causes the roof rail outer to move inward and downward in the vehicle width direction at the time of a side collision of the vehicle. By suppressing the displacement of the roof side rail and the collapse of the cross section of the roof side rail, it is possible to reduce the intrusion of the pillar into the inside in the vehicle width direction.

The invention of claim 2 is characterized in that, in the invention of claim 1, the roof rail outer is joined to the roof reinforcement and gusset at a first joint sandwiched between the roof reinforcement and gusset. It is said.
According to this configuration, in the case of a side collision of the vehicle, the displacement of the roof rail outer inward and downward in the vehicle width direction can be suppressed by triple joining of the gusset and the roof reinforcement.

The invention of claim 3 is the invention of claim 2, wherein the end portion of the roof rail outer in the vehicle width direction is wider than the second joint portion in which the gusset and the inner portion of the roof rail inner in the vehicle width direction are joined. It is characterized in that the first joint portion is extended inward in the direction and is set in a portion extending inward in the vehicle width direction with respect to the second joint portion of the roof rail inner.
According to this configuration, the displacement of the roof rail outer in the inward and downward direction in the vehicle width direction can be further suppressed.

The invention of claim 4 is characterized in that, in the invention of claim 2 or 3, the first joint portion is set at a portion corresponding to the end portion of the gusset in the front-rear direction of the vehicle body.
According to this configuration, the displacement of the roof rail outer inward and downward in the vehicle width direction can be suppressed by the rigidity of the gusset itself.

The invention of claim 5 is the invention of any one of claims 2 to 4, wherein the roof rail outer is sandwiched between the roof reinforcement and the roof rail inner at a third joint. It is characterized in that it is joined to the roof rail inner and the third joint portion is set to a portion corresponding to the intermediate portion in the vehicle body front-rear direction of the gusset.
According to this configuration, in the event of a side collision of the vehicle, the displacement of the roof rail outer inward and downward in the vehicle width direction can be suppressed by triple joining of the roof rail inner and the roof reinforcement.

The invention of claim 6 is the invention of any one of claims 1 to 5, wherein the pillar cooperates with a pillar outer member constituting the outer wall portion in the vehicle width direction and the pillar outer member in the vertical direction of the vehicle body. It has a pillar inner member forming an extended closed cross section, and is characterized in that the roof rail inner is joined to the pillar inner member and the gusset at a fourth joint sandwiched between the pillar inner member and the gusset.
According to this configuration, at the time of a side collision of the vehicle, the displacement of the roof rail inner inward and downward in the vehicle width direction can be suppressed by triple joining of the gusset and the pillar inner member.

According to the upper body structure of the vehicle of the present invention, it is possible to reduce the intrusion of the pillars into the vehicle interior by suppressing the displacement of the roof side rail at the time of a side collision.

It is a vehicle width direction outside perspective view of the vehicle which concerns on Example 1. FIG. It is a perspective view of the main part of the roof side rail. FIG. 2 is a sectional view taken along line III-III of FIG. FIG. 2 is a sectional view taken along line IV-IV of FIG. FIG. 2 is a sectional view taken along line VV of FIG. It is a perspective view of the roof side rail, the roof reinforcement and the gusset as viewed from the left side of the room. It is a top view of the roof side rail, the roof reinforcement, and the gusset as viewed from below the room. FIG. 7 is a sectional view taken along line VIII-VIII of FIG. It is an exploded perspective view of a roof side rail, a roof reinforcement, and a gusset. It is explanatory drawing concerning the displacement of a center pillar at the time of a side collision of a vehicle.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of preferred embodiments is merely exemplary and is not intended to limit the invention, its applications or its uses.

Hereinafter, Example 1 of the present invention will be described with reference to FIGS. 1 to 9.
The vehicle V according to the first embodiment is an FR (Front engine Rear drive) vehicle having an engine (not shown) vertically arranged in an engine room on the front side of the vehicle compartment and being driven by rear wheels.
Hereinafter, in the figure, the arrow F direction will be described as the front in the front-rear direction of the vehicle body, the arrow L direction as the left side in the vehicle width direction, and the arrow U direction as the upper direction in the vehicle body vertical direction. Further, since this vehicle V has a symmetrical structure, the right side member and the right side portion will be mainly described below unless otherwise specified.

First, the overall configuration will be described.
As shown in FIG. 1, the vehicle V extends in the front-rear direction with a pair of left and right side sill 1 extending in the front-rear direction, a floor panel 2 that is hung between the pair of side sill 1 and forms the floor surface of the passenger compartment, and the floor panel 2 that constitutes the vehicle interior floor surface. A pair of left and right roof side rails 10 that support the roof panel 3 (see FIG. 9), and a pair of left and right A to a pair that extend downward from each pair of roof side rails 10 to a pair of side sills 1. It is equipped with D-pillars 4 to 7 and the like.

The side sill 1 is composed of an outer member and an inner member obtained by press-molding a steel plate, and both members cooperate to form a substantially linear closed cross section extending in the front-rear direction.
The lower end of the hinge pillar corresponding to the lower half of the A pillar 4 is connected to the front end portion of the side sill 1, and the lower end of the B pillar 5 is connected to the middle portion.
The front side portion of the A pillar 4 and the roof side rail 10 and the front side portion of the B pillar 5 and the side sill 1 form a door opening edge portion of the front door (not shown).
The front end portion of the rear wheel house 8 is connected to the rear end portion of the side sill 1.
The rear side portion of the B pillar 5 and the roof side rail 10, the front side portion of the C pillar 6, the rear wheel house 8 and the rear side portion of the side sill 1 form an opening edge for the door of the rear door (not shown). .. The B-pillar 5 is configured such that the bending rigidity of the upper member corresponding to about 2/3 of the upper side is larger than the bending rigidity of the lower member corresponding to about 1/3 of the lower side.

As shown in FIG. 1, a pair of roof side rails 10 are arranged so as to correspond to the left and right ends of the roof panel 3, a pair of front and rear headers 21 and 22, and two roof reinforcements ( Hereinafter, it is abbreviated as roof rain) 23, 30 and the like.
The front header 21 connects the front ends of the pair of roof side rails 10, and the rear header 22 connects the rear ends of the pair of roof side rails 10. The rear header 22 is provided with a pair of left and right hinges (not shown) for opening and closing the lift gate (not shown).
The roof rain 23 is arranged at a position where the portions corresponding to the upper ends of the pair of C pillars 6 are connected to the left and right, and the roof rain 30 is arranged to connect the portions corresponding to the upper ends of the pair of B pillars 5 to the left and right. It is placed in the position to do.

Next, the roof side rail 10 will be described.
As shown in FIGS. 2 to 4, the roof side rail 10 has a roof rail outer 11 forming a right side wall portion (outer wall portion in the vehicle width direction) and a cross-sectional schematic base extending in the front-rear direction in cooperation with the roof rail outer 11. It is composed of a roof rail inner 12 that forms a closed cross section of the shape, a roof rail rain 13 that partitions the trapezoidal closed cross section inside and outside, and a substantially L-shaped reinforcing member 14 having a substantially L-shaped cross section that covers the upper ridge line extending in the front and rear of the roof rail outer 11. ..
The upper end of the outer member 5a of the B pillar is joined to the right side of the roof rail outer 11, and the inner member 5b is triple-joined with the lower end of the roof rail outer 11 sandwiching the lower end of the roof rail rain 13. There is. The upper end of the roof rail rain 13 is joined to the upper wall of the roof rail outer 11.

As shown in FIGS. 2 and 5, the left end portion (inner end portion in the vehicle width direction) of the roof rail outer 11 is formed in an uneven shape (curved wavy shape) in a side view. At the end of the roof rail outer 11, a plurality of bulging portions 11a that bulge upward with respect to the reference surface that occupies most of the upper wall portion are formed side by side in the front-rear direction. These plurality of bulging portions 11a are joined to the lower surface of the roof panel 3 by welding. Further, a roof rain 30 is joined to the left end portion of the roof rail outer 11.

Next, the roof rain 30 will be described.
As shown in FIGS. 2 and 5, for example, the roof rain 30 is integrally formed of a high-strength steel plate, and has a pair of front and rear lower groove portions 31 having a substantially U-shaped cross section and a rear upper end portion of the front lower groove portion 31. A connecting portion 33 that connects the front upper end portion of the rear lower groove portion 31 to form an upper groove portion 32 having an inverted U-shaped cross section, and a rear side lower groove portion 31 that extends forward from the front upper end portion of the front lower groove portion 31. It is provided with a pair of front and rear flange portions 34 and the like extending rearward from the upper end portion on the side.

The right end of the roof rain 30, the so-called connecting portion 33, and the right end of the front and rear pair of flange portions 34 are arranged so as to face each other with a slight gap from the left end of the roof rail outer 11.
The connecting portion 33 and the pair of front and rear flange portions 34 are each formed with three protruding portions 35 extending to the right from their respective ends. Each of the protruding portions 35 is joined to the upper surface (reference surface) of the roof rail outer 11 by welding between the adjacent bulging portions 11a.
As shown in FIG. 5, the left uneven end of the roof rail outer 11 and the right uneven end of the roof rain 30 intersect at least by the thickness of the roof rail outer 11 in a side view. Further, in the portion where the bulging portion 11a is formed, since the uneven end portion of the roof rain 30 intersects the cross section of the bulging portion 11a, an intersecting region larger than the thickness of the roof rail outer 11 is formed. doing.

As shown in FIGS. 6 to 9, a pair of left and right gussets 40 are provided to reinforce the space between the roof side rail 10 and the roof rain 30 from the vehicle interior side in the area corresponding to the pair of B pillars 5. .. The gusset 40 is integrally formed of, for example, a high-tensile steel plate having a substantially hat-shaped cross section, and has a pair of front and rear vertical wall portions 41, a bottom wall portion 42 connecting the lower ends of these pairs of vertical wall portions 41, and a front side. A pair of front and rear upper flange portions 43 extending forward from the upper end portion of the vertical wall portion 41 and extending rearward from the upper end portion of the rear vertical wall portion 41, and a side flange portion 44 and the like are provided at the outer end portion in the vehicle width direction. ing.

The bottom wall portion 42 has an elliptical opening 42a that is long in the front-rear direction on the outer side in the vehicle width direction, two front and rear bead portions 42b that extend downward in the vehicle width direction, and an outer peripheral portion of the opening 42a. A downwardly projecting annular bead portion 42c extending along the line is provided, and the two front and rear bead portions 42b are connected to the annular bead portion 42c. The opening 42a is an opening for welding.
As shown in FIGS. 2 and 7, the right end portion of the roof rain 30 is substantially along the front-rear direction with a slight gap from the left end portion of the roof side rail 10, so that the bead portion 42b is formed. It is formed so as to be substantially orthogonal to the right end portion of the roof rain 30 in a plan view.

As shown in FIG. 8, the bottom wall portion 42 is joined to the bottom wall portion of the front and rear lower groove portions 31, and the pair of upper flange portions 43 are joined to the pair of flange portions 34 (protruding portions 35), respectively. There is.
The bottom wall portion 42 and the upper groove portion 32 form a substantially rectangular closed cross section C straddling between the roof side rail 10 and the roof rain 30 in the lower region.
The bead portion 42b formed on the bottom wall portion 42 is formed in a substantially trapezoidal cross section protruding downward, and has four ridge lines extending in the vehicle width direction. Therefore, the bead portion 42b increases the cross-sectional area C of the closed cross section formed by the bottom wall portion 42 and the upper groove portion 32.

The roof side rail 10, the roof rain 30, and the gusset 40 are joined by the first to fourth joints P1 to P4, respectively. The first and second joint portions P1 and P2 are set at portions corresponding to the front and rear ends of the gusset 40. As shown in FIG. 3, in the first joint portion P1, the protruding portion 35 (flange portion 34) and the upper flange portion 43 sandwich the roof rail outer 11 and are triple-joined by welding. In the second joint portion P2 set outside the first joint portion P1 in the vehicle width direction, the roof rail inner 12 and the side flange portion 44 are joined by welding.

The third and fourth joint portions P3 and P4 are set in portions corresponding to the front and rear intermediate portions of the gusset 40. As shown in FIG. 4, since the roof rail inner 12 is partially extended to the left, the projecting portion 35 (connecting portion 33) and the roof rail inner 12 sandwich the roof rail outer 11 at the third joint portion P3. It is triple-joined by welding. In the fourth joint portion P4 set outside the third joint portion P3 in the vehicle width direction, the side flange portion 44 and the inner member 5b sandwich the roof rail inner 12 and are triple-joined by welding.

In this embodiment, the joining method of each member in the first, second and fourth joints P1, P2 and P4 is the same, and further, the roof rail outer 11, the roof rail inner 12 and the roof rain 30 in the third joint P3 are used. By making the joining method the same as the joining method of each member in the first, second, and fourth joining portions P1, P2, and P4, it is possible to work at the same welding station, and the production efficiency is improved. ..

Next, the action and effect of the upper body structure will be described.
According to the upper vehicle body structure according to the first embodiment, the roof side rail 10 forms a closed cross section extending in the front-rear direction in cooperation with the roof rail outer 11 forming the outer wall portion in the vehicle width direction and the roof rail outer 11. Since the gusset 40 has the roof rail inner 12 and is erected between the inner portion of the roof rail inner 12 in the vehicle width direction and the roof rain 30, the gusset 40 increases the width of the roof rail inner 12 in the event of a side collision of the vehicle. It is possible to suppress the displacement inward and downward in the direction. Since the roof rail outer 11 is joined to the roof rain 30 and the gusset 40 in the vertical direction on the upper side of the gusset 40, the gusset 40 causes the roof rail outer 11 to be inwardly downward in the vehicle width direction at the time of a side collision of the vehicle V. By suppressing the displacement to the roof side rail 10 and suppressing the cross-sectional collapse of the roof side rail 10, it is possible to reduce the amount of penetration of the B pillar 5 inward in the vehicle width direction.

Since the roof rail outer 11 is joined to the roof rain 30 and the gusset 40 at the first joint P1 sandwiched between the roof rain 30 and the gusset 40, the roof rail outer 11 is moved inward and downward in the vehicle width direction at the time of a side collision of the vehicle V. Displacement can be suppressed by triple joining of the gusset 40 and the roof rain 30.

The end portion of the roof rail outer 11 in the vehicle width direction extends inward in the vehicle width direction from the second joint portion P2 in which the gusset 40 and the inner portion of the roof rail inner 12 in the vehicle width direction are joined, and the first joint portion P1 Since it is set in a portion extending inward in the vehicle width direction from the second joint portion P2, the displacement of the roof rail outer 11 inward and downward in the vehicle width direction can be further suppressed.

Since the first joint P1 is set at the portion corresponding to the front-rear end of the gusset 40, the displacement of the roof rail outer 11 inward and downward in the vehicle width direction can be suppressed by the rigidity of the gusset 40 itself.

The roof rail outer 11 is joined to the roof rain 30 and the roof rail inner 12 at the third joint P3 sandwiched between the roof rain 30 and the roof rail inner 12, and the third joint P3 corresponds to the middle portion in the front-rear direction of the gusset 40. Therefore, when the vehicle V collides with the side surface, the displacement of the roof rail outer 11 inward and downward in the vehicle width direction can be suppressed by the triple joint between the roof rail inner 12 and the roof rain 30.

The B-pillar 5 has an outer member 5a and an inner member 5b that cooperates with the outer member 5a to form a closed cross section extending in the vertical direction, and the roof rail inner 12 is sandwiched between the inner member 5b and the gusset 40. Since it was joined to the inner member 5b and the gusset 40 at the fourth joint P4, the displacement of the roof rail inner 12 inward and downward in the vehicle width direction during a side collision of the vehicle V is triple-joined by the gusset 40 and the inner member 5b. It can be suppressed.

Next, a modified example in which the embodiment is partially modified will be described.
1] In the above embodiment, the example in which the roof rain 30 is integrally formed has been described, but a plurality of members may be joined to form the roof rain 30. For example, it is also possible to prepare the front lower groove portion 31 and the rear lower groove portion 31 separately, and connect the front lower groove portion 31 and the rear lower groove portion 31 by using the connecting portion 33 which is a panel. Further, although the example of the roof rain 30 having a pair of front and rear lower groove portions 31 has been described, one lower groove portion 31 may be provided, or three or more lower groove portions 31 may be provided. In this case, the number of protrusions 35 may be set arbitrarily.

2] In the above embodiment, an example in which the first joint portion P1 is triple-joined has been described, but at least if the joint between the roof rail outer 11 and the gusset 40 and the joint between the roof rail outer 11 and the roof rain 30 overlap vertically. good.

3] In the above embodiment, an example in which the first, second, and fourth joint portions P1, P2, and P4 are joined by the same welding has been described, but each may be joined by a different joining method. 4 The joint P4 may be connected by bolting.

4] In addition, a person skilled in the art can carry out the present invention in a form in which various modifications are added to the above-described embodiment or in a combination of the respective embodiments without departing from the spirit of the present invention. It also includes various modified forms.

3 Roof panel 5 B Pillar 5a Outer member 5b Inner member 10 Roof rail 11 Roof rail outer 12 Roof rail Inner 30 Roof rain 40 Gusset P1 to P4 1st to 4th joints V Vehicle

Claims (6)

A pair of left and right roof side rails that are connected to both ends of the roof panel in the vehicle width direction and extend in the front-rear direction of the vehicle body, and a pair of left and right pillars that extend downward from the middle of this pair of roof side rails in the vertical direction of the vehicle body. , A vehicle equipped with a roof reinforcement that connects the middle part of the pair of roof side rails in the vehicle width direction, and a pair of left and right gussets that reinforce between the pair of pillars and the roof reinforcement. In the upper body structure of
The roof side rail has a roof rail outer that constitutes an outer wall portion in the vehicle width direction, and a roof rail inner that cooperates with the roof rail outer to form a closed cross section extending in the front-rear direction of the vehicle body.
The gusset is erected between the inner portion of the roof rail inner in the vehicle width direction and the roof reinforcement.
An upper vehicle body structure of a vehicle, wherein the roof rail outer is joined to the roof reinforcement and the gusset so as to overlap each other in the vertical direction of the vehicle body on the upper side of the gusset. The upper vehicle body structure of a vehicle according to claim 1, wherein the roof rail outer is joined to the roof reinforcement and the gusset at a first joint sandwiched between the roof reinforcement and the gusset. The end portion of the roof rail outer in the vehicle width direction is extended inward in the vehicle width direction from the second joint portion where the gusset and the inner portion of the roof rail inner in the vehicle width direction are joined.
The upper body structure of a vehicle according to claim 2, wherein the first joint is set in a portion of the roof rail inner that extends inward in the vehicle width direction with respect to the second joint. The upper vehicle body structure of a vehicle according to claim 2 or 3, wherein the first joint is set at a portion corresponding to an end portion of the gusset in the front-rear direction of the vehicle body. The roof rail outer is joined to the roof reinforcement and the roof rail inner at a third joint sandwiched between the roof reinforcement and the roof rail inner.
The upper vehicle body structure of a vehicle according to any one of claims 2 to 4, wherein the third joint is set at a portion corresponding to an intermediate portion in the vehicle body front-rear direction of the gusset. The pillar has a pillar outer member forming an outer wall portion in the vehicle width direction, and a pillar inner member that cooperates with the pillar outer member to form a closed cross section extending in the vertical direction of the vehicle body.
The upper part of the vehicle according to any one of claims 1 to 5, wherein the roof rail inner is joined to the pillar inner member and the gusset at a fourth joint sandwiched between the pillar inner member and the gusset. Body structure.