JP2018043743A - Body superstructure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the torsional rigidity and lateral collision performance of a vehicle body while realizing weight reduction of the vehicle body. SOLUTION: In a vehicle body superstructure having at least a roof 2, a roof cross member 3 extending in the vehicle width direction, and roof side rails 4 on both left and right sides extending in the vehicle front-rear direction on both left and right sides of the vehicle body, the roof cross member 3 The roof side rails 4 are connected to each other by first reinforcing members 8 diagonally arranged from the middle portion of the roof cross member 3 in the vehicle width direction toward the roof side rails 4 on both the left and right sides, and the first reinforcing members 8 are connected to each other. Are arranged in the vehicle front side region R1 and the vehicle rear side region R2 of the roof cross member 3. [Selection diagram] Fig. 1

Description

  The present invention relates to a vehicle body upper structure of a vehicle.

2. Description of the Related Art Conventionally, for the purpose of reducing the weight of a vehicle body, a technique for forming a roof at the top of the vehicle body from a resin material is known. In general, the roof at the top of the vehicle body contributes greatly to the torsional rigidity of the vehicle body and the vehicle performance during a side collision. On the other hand, a plate made of a resin material has inferior mechanical properties as compared with a steel plate. Therefore, a vehicle using a resin roof deteriorates the torsional rigidity of the vehicle body and the vehicle body performance at the time of a side collision.
As a technique for reducing the weight of a vehicle body, a technique for reducing the weight of a steel plate used for a roof at the top of the vehicle body is known. The reduction in the thickness of the steel plate is accompanied by a decrease in the roof performance, so that the torsional rigidity of the vehicle body and the vehicle performance during a side collision are reduced.
For this reason, in the conventional vehicle body superstructure, there is a technology for improving the side collision performance of the vehicle body by arranging reinforcing pipes inside the roof side rails and arranging the roof cross members at the front and rear ends of the roof. (For example, refer to Patent Document 1).

Japanese Patent No. 4852017

  However, in the structure in which the reinforcing pipe is arranged inside the roof side rail like the above-described conventional car body superstructure, the torsional rigidity of the car body that affects the steering stability and NV performance (noise / vibration performance) of the car is affected. Since the effect is not sufficient, when it is desired to improve the torsional rigidity of the vehicle body, further reinforcement is required, which increases the weight of the vehicle body. In addition, the use of the reinforcing pipe has a problem that not only the weight increases but also the cost increases.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a vehicle body upper structure capable of improving the torsional rigidity and side collision performance of the vehicle body while realizing weight reduction of the vehicle body. There is to do.

In order to solve the above-described problems of the prior art, the present invention includes a resin roof, a roof cross member extending in the vehicle width direction, and roof side rails on both left and right sides extending in the vehicle front-rear direction on both left and right sides of the vehicle body. In the vehicle body superstructure provided at least, the roof cross member and the roof side rail are arranged at an angle from an intermediate portion of the roof cross member in the vehicle width direction toward the left and right roof side rails. The first reinforcing member is disposed in at least one region of the vehicle front side region and the vehicle rear side region of the roof cross member.
According to another aspect of the present invention, in the vehicle body upper structure, the roof cross member includes at least a roof, a roof cross member extending in the vehicle width direction, and roof side rails on both left and right sides extending in the vehicle front-rear direction. And the roof side rail are respectively connected by a first reinforcing member disposed obliquely from an intermediate portion of the roof cross member in the vehicle width direction toward the left and right roof side rails, and the first reinforcing member Are arranged in a region on at least one side of a vehicle front side region and a vehicle rear side region of the roof cross member.

As described above, the vehicle body upper structure according to the present invention includes at least a resin roof, a roof cross member extending in the vehicle width direction, and left and right roof side rails extending in the vehicle longitudinal direction on both left and right sides of the vehicle body, The roof cross member and the roof side rail are respectively connected by first reinforcing members disposed obliquely from the middle part of the roof cross member in the vehicle width direction toward the left and right roof side rails. Since the reinforcing member 1 is disposed in at least one region of the vehicle front side region and the vehicle rear side region of the roof cross member, the steel plate roof and the steel plate roof can be formed by resinizing the roof without increasing the weight of the vehicle body. It is possible to improve the torsional rigidity and side impact performance of the vehicle body, which is lower than that of the vehicle body.
In other words, in the vehicle body superstructure of the present invention, it is possible to increase the connection strength between the roof cross member and the roof side rail by interposing the first reinforcing member, and torsional deformation of the vehicle body can be suppressed. In addition, the arrangement of the first reinforcing member that connects the roof cross member and the roof side rail can increase the bending rigidity of the roof cross member and the roof side rail, and can suppress deformation of the vehicle compartment during a side collision. it can.
Another vehicle body superstructure according to the present invention comprises at least a roof, a roof cross member extending in the vehicle width direction, and left and right roof side rails extending in the vehicle front-rear direction on both left and right sides of the vehicle body. The member and the roof side rail are respectively connected by a first reinforcing member disposed obliquely from an intermediate portion of the roof cross member in the vehicle width direction toward the left and right roof side rails, and the first reinforcing member Since the member is disposed in at least one region of the vehicle front side region and the vehicle rear side region of the roof cross member, the connection strength between the roof cross member and the roof side rail is increased by the interposition of the first reinforcing member. It becomes possible to raise, and torsional deformation of the vehicle body can be suppressed. In addition, the arrangement of the first reinforcing member that connects the roof cross member and the roof side rail can increase the bending rigidity of the roof cross member and the roof side rail, and can suppress deformation of the vehicle compartment during a side collision. it can.

1 is a perspective view of a resin roof, a roof cross member, a roof side rail, and a first reinforcing member to which a vehicle body upper structure according to a first embodiment of the present invention is applied, as viewed from the upper right side of a vehicle front side. The resin roof, the roof cross member, the roof side rail, the roof back member, and the first and second reinforcing members to which the vehicle body upper structure according to the second embodiment of the present invention is applied are obliquely viewed from the upper right side on the vehicle front side. FIG. FIG. 9 is a plan view of a vehicle body upper structure according to a modified example of the embodiment of the present invention, as viewed from above the roof cross member in FIG. 1. FIG. 6 is a perspective view of a resin roof, a roof cross member, a roof side rail, and a first reinforcing member to which a vehicle body upper structure according to a modification of the embodiment of the present invention is applied, as viewed from diagonally right above the vehicle front side. .

  Hereinafter, the present invention will be described in detail based on illustrated embodiments. In the figure, the arrow Fr direction indicates the front of the vehicle.

[First Embodiment]
FIG. 1 shows a vehicle body superstructure according to a first embodiment of the present invention.
As shown in FIG. 1, the vehicle body upper portion 1 of the vehicle to which the structure according to the first embodiment of the present invention is applied mainly includes a resin roof 2, a roof cross member 3 extending in the vehicle width direction, and a vehicle body. A roof side rail 4 on both left and right sides extending in the vehicle front-rear direction on both left and right sides, and a roof front member 5 and a roof rear member 6 extending in the vehicle width direction at front and rear ends of the vehicle body are provided. The resin roof 2 is a resin panel used for the purpose of reducing the weight of the vehicle body. The roof side rails 4 are located on the left and right sides of the upper body 1 and the roof front is located on the front and rear ends of the upper body 1. It is arranged around the member 5 and the roof rear member 6 and in the entire region of the upper part 1 of the vehicle body. Further, the roof side rails 4 extend linearly along the vehicle front-rear direction, and are arranged in parallel at a certain interval at positions on both the left and right sides of the upper body 1. In addition, the roof 2 of this embodiment is not restricted to the thing made from resin, You may be comprised with the panels made from light alloys, such as steel other than resin, and aluminum.

As shown in FIG. 1, the roof cross member 3 of the present embodiment has a length that can be bridged between the roof side rails 4 on both the left and right sides. They are joined to the side rails 4 by spot welding or the like. Further, the position of the roof cross member 3 in the vehicle front-rear direction is arranged at the position of the roof side rail 4 to which the center pillar 7 is joined. The center pillar 7 extends in the vehicle vertical direction, and an upper end portion is joined to the roof side rail 4.
Further, the roof cross member 3 is formed in a substantially hat-shaped cross section in which the opening is disposed on the vehicle lower side or the vehicle upper side, and includes an upper surface portion 31 and flange portions 32 positioned in front of and behind the upper surface portion 31. Have.

In the structure of the vehicle body upper portion 1 of the present embodiment, the roof cross member 3 and the roof side rail 4 are arranged on both the left and right sides from the intermediate portion located near the center in the vehicle width direction of the roof cross member 3 as shown in FIG. Are connected by first reinforcing members 8 arranged obliquely toward the roof side rail 4. Two of these first reinforcing members 8 are disposed in each of the vehicle front side region R1 and the vehicle rear side region R2. The vehicle front side region R1 is a region surrounded by the roof cross member 3, the roof front member 5, and the roof side rails 4 on the left and right sides. The vehicle rear side region R2 is a region surrounded by the roof cross member 3, the roof rear member 6, and the left and right roof side rails 4.
In addition, the 1st reinforcement member 8 should just be arrange | positioned in the area | region of at least one side of vehicle front side area | region R1 and vehicle rear side area | region R2, and does not necessarily need to be arrange | positioned in two area | regions R1 and R2. .

  The first reinforcing members 8 disposed on the left and right sides of the vehicle front side region R1 extend from the vicinity of the center of the roof cross member 3 in the vehicle width direction toward the roof side rails 4 on the left and right sides, respectively. The space in the vehicle width direction on the base end portion 8a side is arranged to be smaller than the space in the vehicle width direction on the distal end portion 8b side. The first reinforcing members 8 disposed on the left and right sides of the vehicle front side region R2 extend from the vicinity of the center of the roof cross member 3 in the vehicle width direction toward the roof side rails 4 on the left and right sides, respectively. The vehicle width direction interval on the base end portion 8a side is arranged to be smaller than the vehicle width direction interval on the distal end portion 8b side. For this reason, the first reinforcing member 8 has two parts on both the left and right sides when viewed from above the vehicle with respect to the roof cross member 3 in both the vehicle front side region R1 and the vehicle rear side region R2. It is arranged in a letter shape.

The base end portion 8a of the first reinforcing member 8 is overlapped with the corresponding vehicle front side or vehicle rear side flange portion 32 of the roof cross member 3 in the vehicle front side region R1 and the vehicle rear side region R2. They are joined by spot welding or the like. Moreover, in the first reinforcing member 8, the position in the vehicle width direction of the base end portion 8a joined near the center of the roof cross member 3 is set to the same position in the vehicle front side region R1 and the vehicle rear side region R2. ing. With such a positional relationship, the reaction force of the vehicle front side region R1 and the vehicle rear side region R2 is effectively generated with respect to the input at the time of a vehicle body side collision.
Moreover, the front-end | tip part 8b of the 1st reinforcement member 8 is joined by the spot welding etc. in the state piled up on the roof side rail 4 of both right and left sides. In addition, in the first reinforcing member 8, the front-rear direction positions of the front end portions 8 b joined to the left and right roof side rails 4 are the same in the vehicle front side region R 1 and the vehicle rear side region R 2. Is set to

  As described above, in the structure of the vehicle body upper portion 1 according to the first embodiment of the present invention, the resin roof 2, the roof cross member 3 extending in the vehicle width direction, and the left and right sides extending in the vehicle front-rear direction on both the left and right sides of the vehicle body. And the roof cross member 3 and the roof side rail 4 are arranged obliquely from the middle part in the vehicle width direction of the roof cross member 3 toward the left and right roof side rails 4. Since the first reinforcing member 8 is disposed in the vehicle front side region R1 and the vehicle rear side region R2 of the roof cross member 3, the roof cross member 3 and the roof side The connection strength with the rail 4 can be increased, and the torsional rigidity of the vehicle body can be improved. Moreover, in the structure of the vehicle body upper part 1 of the first embodiment, the bending rigidity of the roof cross member 3 and the roof side rail 4 is increased by the arrangement of the first reinforcing member 8 that connects the roof cross member 3 and the roof side rail 4. Can be increased. Therefore, according to the structure of the vehicle body upper part 1 of the first embodiment, it is possible to increase the torsional rigidity and the bending rigidity of the vehicle body without increasing the weight of the vehicle body even when a load is input at the time of a side collision. The torsional deformation of the vehicle body and the deformation of the vehicle compartment, which are reduced as compared with the steel plate roof, can be suppressed by the resinization of the roof 2, and the torsional rigidity and side impact performance of the vehicle body can be improved. In addition, when the roof 2 of the present embodiment is made of steel, the torsional deformation of the vehicle body and the deformation of the vehicle compartment can be suppressed even if the roof panel having a conventional structure is thinner, and the torsional rigidity of the vehicle body can be suppressed. And the side collision performance can be improved.

[Second Embodiment]
FIG. 2 shows a vehicle body superstructure according to a second embodiment of the present invention. In addition, about the part similar to what was demonstrated in 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
In the vehicle body upper portion 1 of the second embodiment, in addition to the structure of the first embodiment, as shown in FIG. 2, the second reinforcement for connecting the roof back member 6 and the left and right roof side rails 4 respectively. The member 9 is arrange | positioned at vehicle rear side area | region R2. The second reinforcing member 9 is divided into a member joining portion 91 joined to the roof back member 6 and the member joining portion 91. The second reinforcing member 9 is obliquely extended forward of the vehicle while facing the roof side rails 4 on both left and right sides. The front end portion is composed of rail joint portions 92 that are joined to the left and right roof side rails 4 respectively. The member joint portion 91 of the second reinforcing member 9 is disposed at the center portion in the vehicle width direction at the intermediate portion in the vehicle width direction of the roof back member 6. That is, the second reinforcing member 9 is integrally formed in a substantially V shape when viewed from above the vehicle. However, the second reinforcing member 9 may be divided into two like the first reinforcing member 8.

  Thus, in the structure of the vehicle body upper portion 1 according to the second embodiment of the present invention, the second reinforcing member 9 that connects the roof back member 6 and the left and right roof side rails 4 is arranged in the vehicle rear side region R2. Therefore, it is possible to more effectively disperse the input load to the upper part 1 of the vehicle body, and the torsional rigidity and side impact performance of the vehicle body can be further enhanced. In addition, since the member joining portion 91 of the second reinforcing member 9 is arranged at the center portion in the vehicle width direction at the intermediate portion in the vehicle width direction of the roof back member 6, the torsional rigidity and the side collision performance of the vehicle body are further improved. It can be further enhanced. Other effects are the same as those of the first embodiment.

[Third Embodiment]
FIG. 1 shows a vehicle body superstructure according to a third embodiment of the present invention. In addition, about the part similar to what was demonstrated in 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
In the vehicle front side region R1 of the vehicle body upper portion 1 of the third embodiment, in addition to the structure of the first embodiment, as shown in FIG. 1, a connecting portion between the roof side rail 4 and the first reinforcing member 8 C1 is disposed in a region M1 in an intermediate portion of the region obtained by dividing the front-rear direction of the roof cross member 3 and the roof front member 5 into three equal parts. Further, also in the vehicle rear side region R2 of the vehicle body upper part 1, the connecting portion C1 between the roof side rail 4 and the first reinforcing member 8 has a distance of 3 or the like between the roof cross member 3 and the roof back member 6 in the vehicle front-rear direction. Among the divided areas, the area is arranged in the middle area M2.

Thus, in the structure of the vehicle body upper portion 1 according to the third embodiment of the present invention, in the vehicle front side region R1 and the vehicle rear side region R2, the connecting portion C1 between the roof side rail 4 and the first reinforcing member 8 is The roof cross member 3 and the roof front member 5 and the roof back member 6 are arranged in the middle regions M1 and M2 among the regions obtained by dividing the front-rear direction of the vehicle into three equal parts. It can suppress that the difference of rigidity or intensity | strength becomes large in the vicinity of junction part D1, D2 where the front member 5 and the roof side rail 4 join, and locations other than the vicinity of these junction part D1, D2.
Therefore, in the structure of the vehicle body upper portion 1 according to the present embodiment, local deformation can be suppressed at a change point between a portion having high rigidity and a portion having low rigidity. In addition, with minimum reinforcement, it is possible to achieve both the torsional rigidity of the vehicle body and the improvement of the side collision performance that contribute to the steering stability and NV performance of the vehicle. Furthermore, the roof 2 can be supported by the first reinforcing member 8 in a wide range in the vehicle longitudinal direction. In particular, the front side of the vehicle body of the roof 2 can be efficiently supported by the roof side rail 4, the roof cross member 3, the roof front member 5, and the first reinforcing member 8. The unevenness of the roof 2 in the region R1 (a state where the panel is recessed inward) can be suppressed. Other effects are the same as those of the first embodiment.

[Fourth Embodiment]
FIG. 2 shows a vehicle body superstructure according to a fourth embodiment of the present invention. In addition, about the part similar to what was demonstrated in 1st Embodiment-3rd Embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
In the vehicle body upper portion 1 of the fourth embodiment, in addition to the structures of the first to third embodiments, as shown in FIG. 2, the connecting portion C2 between the roof side rail 4 and the second reinforcing member 9 is provided. However, like the connecting portion C1 between the roof side rail 4 and the first reinforcing member 8, the region M2 in the middle portion of the region obtained by dividing the vehicle crosswise direction between the roof cross member 3 and the roof back member 6 into three equal parts. Is arranged.

As described above, in the structure of the vehicle body upper portion 1 according to the fourth embodiment of the present invention, the connecting portion C2 between the roof side rail 4 and the second reinforcing member 9 is the front and rear of the vehicle between the roof cross member 3 and the roof back member 6. Since it is arranged in the middle region M2 among the regions divided into three equal parts, the vicinity of the joint D3 where the roof back member 6 and the roof side rail 4 are joined and other than the vicinity of these joints D3 It can suppress that the difference in rigidity and intensity | strength becomes large in a location.
Therefore, in the structure of the vehicle body upper portion 1 of the present embodiment, local deformation can be further suppressed at the change points between the high rigidity portion and the low rigidity portion. Therefore, the torsional rigidity and the side collision performance of the vehicle body that contribute to the steering stability and NV performance of the vehicle can be further improved compared to the structure of the third embodiment. Further, since the rear side of the vehicle body of the roof 2 can be more efficiently supported by the roof side rail 4, the roof cross member 3, the roof back member 6, and the second reinforcing member 9, the vehicle rear side of the upper body 1 The unevenness of the roof 2 in the region R2 can be further suppressed. Other effects are the same as those in the first to third embodiments.

[Fifth Embodiment]
FIG. 2 shows a vehicle body superstructure according to a fifth embodiment of the present invention. In addition, about the part similar to what was demonstrated in 1st Embodiment-4th Embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
In the vehicle body upper portion 1 of the fifth embodiment, in addition to the structures of the first to fourth embodiments, as shown in FIG. 2, a connecting portion C3 between the roof cross member 3 and the first reinforcing member 8 is provided. However, it is arranged in at least one of the three regions M3 in the middle portion among the regions obtained by dividing the width direction of the roof side rails 4 on the left and right sides into five equal parts. In the present embodiment, the connecting portion C3 between the roof cross member 3 and the first reinforcing member 8 is an intermediate portion of three regions among the regions obtained by dividing the width direction of the roof side rails 4 on the left and right sides into five equal parts. Arranged in the left and right regions M3a and M3b adjacent to the central portion M3c. Note that the connecting portion C3 between the roof cross member 3 and the first reinforcing member 8 is a central portion M3c of three regions in the middle portion of a region obtained by dividing the width direction of the roof side rail 4 between the left and right sides into five equal parts. May be arranged.

Thus, in the structure of the vehicle body upper portion 1 according to the fifth embodiment of the present invention, the connecting portion C3 between the roof cross member 3 and the first reinforcing member 8 is between the left and right roof side rails 4 in the vehicle width direction. Since it is arranged in at least one of the three regions M3 in the middle portion among the five equally divided regions, the difference in rigidity and strength is large between the vicinity of the joint portion D2 and the portions other than the vicinity of the joint portion D2. Can be suppressed.
Therefore, in the structure of the vehicle body upper portion 1 according to the present embodiment, local deformation can be suppressed at a change point between a portion having high rigidity and a portion having low rigidity. Therefore, it is possible to further improve the torsional rigidity and side impact performance of the vehicle body that contributes to the steering stability and NV performance of the vehicle, compared to the structures of the third and fourth embodiments. In addition, since the roof 2 can be evenly supported by the first reinforcing member 8 in a wide range in the vehicle front-rear direction, the unevenness of the roof 2 in both the vehicle front side region R1 and the vehicle rear side region R2 of the upper body 1 is prevented. It can be suppressed more efficiently. Other effects are the same as those in the first to fourth embodiments.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, the roof cross member 3 of the first to fifth embodiments described above is linearly formed along the vehicle width direction as viewed from above the vehicle. However, as shown in FIG. 3A may be formed in an arch shape in which the length in the vehicle front-rear direction gradually increases from the middle in the vehicle width direction toward the left and right roof side rails 4 when viewed from above the vehicle. When the roof cross member 3A is formed in such a shape, the joining area between the roof cross member 3A and the roof side rails 4 on both the left and right sides increases, and the joining strength between the roof cross member 3A and the roof side rails 4 is further increased. Can be increased.

  In addition, two first reinforcing members 8 in the first to fifth embodiments described above are arranged in each of the vehicle front side region R1 and the vehicle rear side region R2, as shown in FIG. Using the first reinforcing member 81 having such an integrally formed shape, it is possible to dispose one in each of the vehicle front side region R1 and the vehicle rear side region R2. The first reinforcing member 81 protrudes toward the roof cross member 3 and is joined to an intermediate portion of the roof cross member 3 in the vehicle width direction, and roof side rails on both the left and right sides from the curved portion 81a. 4, the front end portion extends obliquely toward the front or rear of the vehicle, and the front end portion is composed of two inclined portions 81b joined to the left and right roof side rails 4 respectively. By using the first reinforcing member 81 having such a shape, it is possible to reduce the number of parts while securing the bonding strength with the roof cross member 3. Further, the connecting portion C3 between the roof cross member 3 and the first reinforcing member 81 is at least one of the three regions M3 in the middle portion of the region in which the space between the left and right roof side rails 4 is divided into five equal parts. Are arranged in one.

DESCRIPTION OF SYMBOLS 1 Car body upper part 2 Roof 3, 3A Roof cross member 3a End part 4 Roof side rail 5 Roof front member 6 Roof back member 7 Center pillar 8 1st reinforcement member 8a Base end part 8b Tip part 9 2nd reinforcement member 31 Upper surface Part 32 Flange part 81 First reinforcing member 81a Curved part 81b Inclined part 91 Member joint part 92 Rail joint part C1 Connection part between roof side rail and first reinforcing member C2 Between roof side rail and second reinforcing member Connection part C3 Connection part between the roof cross member and the first reinforcing member M1, M2 Intermediate area M3 Intermediate area 3 M3a, M3b Left and right side areas adjacent to the central area of the intermediate area R1 Vehicle front Side region R2 Vehicle rear side region

Claims (10)

In a vehicle body upper structure including at least a resin roof, a roof cross member extending in the vehicle width direction, and roof side rails on both left and right sides extending in the vehicle front-rear direction on both left and right sides of the vehicle body,
The roof cross member and the roof side rail are respectively connected by first reinforcing members disposed obliquely toward the left and right roof side rails from an intermediate portion in the vehicle width direction of the roof cross member,
The vehicle body upper structure, wherein the first reinforcing member is disposed in at least one region of a vehicle front side region and a vehicle rear side region of the roof cross member. In a vehicle body upper structure including at least a roof, a roof cross member extending in the vehicle width direction, and roof side rails on both left and right sides extending in the vehicle front-rear direction on both left and right sides of the vehicle body,
The roof cross member and the roof side rail are respectively connected by first reinforcing members disposed obliquely toward the left and right roof side rails from an intermediate portion in the vehicle width direction of the roof cross member,
The vehicle body upper structure, wherein the first reinforcing member is disposed in at least one region of a vehicle front side region and a vehicle rear side region of the roof cross member.   A roof front member extending in the vehicle width direction is provided on the front side of the vehicle body, and a connecting portion between the roof side rail and the first reinforcing member is formed between the roof cross member and the roof front member. 3. The vehicle body upper structure according to claim 1, wherein at least a part of a region in an intermediate portion of a region obtained by dividing the vehicle longitudinal direction into three equal parts is disposed.   A roof back member extending in the vehicle width direction is provided on the rear side of the vehicle body, and a connecting portion between the roof side rail and the first reinforcing member is formed between the roof cross member and the roof back member. The vehicle body upper structure according to any one of claims 1 to 3, wherein at least a part of the vehicle is divided into a middle region among regions obtained by dividing the vehicle longitudinal direction into three equal parts. The previous SL roof back member and the roof side rails are each connected by a second reinforcing member disposed obliquely toward the right and left sides of the roof side rail from the middle portion in the vehicle width direction of the roof back member The vehicle body superstructure according to any one of claims 1 to 4.   The connecting portion between the roof side rail and the second reinforcing member is at least a part of an intermediate portion of a region obtained by dividing the vehicle crosswise direction between the roof cross member and the roof back member into three equal parts. The vehicle body superstructure according to claim 5, wherein   The connecting portion between the roof cross member and the first reinforcing member is at least in at least one of the three regions in the middle portion of the vehicle width direction of the roof side rails on the left and right sides. The vehicle body superstructure according to any one of claims 1 to 6, wherein a part thereof is disposed.   The connecting portion between the roof cross member and the first reinforcing member is a left and right side adjacent to the central portion of the three intermediate regions in the vehicle width direction between the left and right roof side rails. The vehicle body superstructure according to any one of claims 1 to 6, wherein at least a part thereof is disposed in regions on both sides.   The said roof cross member is formed in the arch shape so that the length of a vehicle front-back direction may become large gradually as it goes to the roof side rail of the said both right and left sides from the intermediate part of a vehicle width direction. The vehicle body superstructure in any one of 1-8.   The first reinforcing member includes a curved portion joined to the roof cross member, and an inclined portion extending obliquely from the curved portion toward the left and right roof side rails and joined to the left and right roof side rails. The vehicle body superstructure according to any one of claims 1 to 9, wherein the vehicle body superstructure is formed of a portion.

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