JP7225758B2 - car body structure - Google Patents

Description

The present invention relates to vehicle body structures.

In Patent Document 1, a vehicle body structure in which a plurality of divided modules with different vehicle specifications such as suspension type, wheelbase, tread, weight distribution, vehicle center of gravity position, roll inertia, yaw inertia, etc. are connected, A vehicle body structure is described in which a connecting portion composed of a connecting member of the same material as that of the module is provided between these divided modules, and a high-strength pipe is press-fitted into the connecting member.

JP 2006-298121 A

In a conventional configuration, a columnar column is attached to one of the connected split modules, and a high-strength tube is attached to the other split module, the column being press-fitted. The split modules are connected by press-fitting the cylindrical portion into the high-strength pipe. With this configuration, when a load thrusting from the road surface is transmitted to the vehicle body during running, it is conceivable that the divided modules will separate in the portions other than where the high-strength pipes are arranged.

An object of the present invention is to transmit a load pushed up from the road surface to the vehicle body during running, so that the first module on the front side and the second module on the rear side are connected to each other. It is to suppress separation.

A vehicle body structure according to a first aspect of the present invention comprises a first module that constitutes a part of the vehicle body in the front-rear direction and has a first roof portion; and a second module having a second roof portion, and a front region adjacent to the portion to which the load is input from the front tires with respect to the portion to which the load is input from the rear tires, or the load from the rear tires The first roof part and the second roof part are connected at an intermediate position between the part where the load is input and the part where the load is input from the front tires, and at least a part of the second roof part is and a connecting portion that overlaps the first roof portion in the longitudinal direction of the vehicle body from above.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the first roof portion and the second roof portion refer to a front region adjacent to a portion to which the load is transmitted from the front tires with respect to a portion to which the load is transmitted from the rear tires, or a portion to which the load is input from the rear tires. and the portion to which the load is input from the front tires.

When the roof is connected in the front region or when the roof is connected in an intermediate position, the load transmitted from the front tires to the connecting portion is greater than the load transmitted from the rear tires to the connecting portion. often become.

Then, due to the load from the front tires, the first module on the front side tends to move upward with respect to the second module on the rear side. However, at the connecting portion, at least a portion of the second roof portion overlaps the first roof portion from above in the longitudinal direction of the vehicle body. Therefore, the portion of the first roof portion that overlaps the second roof portion pushes up the portion of the second roof portion that overlaps the first roof portion.

Thereby, it is possible to suppress separation of the first roof portion of the first module and the second roof portion of the second module at the connecting portion due to the load from the front tires.

A vehicle body structure according to a second aspect of the present invention comprises a first module that constitutes a part of the vehicle body in the front-rear direction and has a first roof portion; and a second module having a second roof portion, and a rear region adjacent to a portion to which the load is input from the rear tires with respect to the portion to which the load is input from the front tires, the first a connecting portion that connects the roof portion and the second roof portion, and at least a portion of the first roof portion overlaps the second roof portion from above in the longitudinal direction of the vehicle body. do.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the first roof portion and the second roof portion are connected in a rear region close to the portion to which the load is transmitted from the rear tires with respect to the portion to which the load is transmitted from the front tires. When the roof is connected in the rear region, the load transmitted from the rear tires to the connecting portion is often greater than the load transmitted from the front tires to the connecting portion.

Then, due to the load from the rear tires, the second module on the rear side tends to move upward with respect to the first module on the front side. However, at the connecting portion, at least a portion of the first roof portion overlaps the second roof portion from above in the longitudinal direction of the vehicle body. Therefore, the portion of the second roof portion that overlaps the first roof portion pushes up the portion of the first roof portion that overlaps the second roof portion.

Thereby, it is possible to suppress separation of the first roof part of the first module and the second roof part of the second module at the connecting part due to the load from the rear tires.

A vehicle body structure according to a third aspect of the present invention is the vehicle body structure according to the first aspect , which is arranged behind the second module, constitutes a part of the vehicle body in the front-rear direction, and has a third roof portion. The third module connects the second roof portion and the third roof portion in a rear region adjacent to the portion to which the load is input from the rear tires with respect to the portion to which the load is input from the front tires, At least part of the second roof portion includes another connecting portion that overlaps the third roof portion from above in the longitudinal direction of the vehicle body.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the second roof portion and the third roof portion are connected in a rear region close to the portion to which the load is transmitted from the rear tires with respect to the portion to which the load is transmitted from the front tires. When the roof is connected in the rear region, the load transmitted from the rear tires to other connections is often greater than the load transmitted from the front tires to other connections.

Then, due to the load from the rear tires, the rear third module tends to move upward with respect to the front second module. However, at other connecting portions, at least a portion of the second roof portion overlaps the third roof portion from above in the longitudinal direction of the vehicle body. Therefore, the portion of the third roof portion that overlaps the second roof portion pushes up the portion of the second roof portion that overlaps the third roof portion.

Accordingly, it is possible to suppress the separation of the second roof portion of the second module and the second roof portion of the third module at other connecting portions due to the load from the rear tires.

A vehicle body structure according to a fourth aspect of the present invention is the vehicle body structure according to any one of the first to third aspects , wherein the first A plurality of portions where the roof portion and the second roof portion overlap are formed.

According to the above configuration, a plurality of portions where the first roof portion and the second roof portion overlap are formed on a cross-sectional plane obtained by cutting the connecting portion in a direction intersecting the vehicle width direction. Thereby, it is possible to suppress separation of the first roof portion of the first module and the second roof portion of the second module at the connection portion, as opposed to the case where the overlapping portion is one.

A vehicle body structure according to a fifth aspect of the present invention includes a first module that constitutes a part of the vehicle body in the front-rear direction and has a first floor portion; and a second module having a second floor portion, and a front region adjacent to a portion to which the load is input from the front tires with respect to the portion to which the load is input from the rear tires, or the load from the rear tires The first floor portion and the second floor portion are connected at an intermediate position between the portion to which the load is input and the portion to which the load is input from the front tires, and at least a portion of the second floor portion is and a connecting portion that overlaps the first floor portion from above in the longitudinal direction of the vehicle body.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the first floor portion and the second floor portion refer to a front region adjacent to a portion to which the load is transmitted from the front tires, or a portion to which the load is input from the rear tires. and the portion to which the load is input from the front tires.

When the floor is connected at the front region and when the floor is connected at an intermediate position, the load transmitted from the front tires to the connecting portion is larger than the load transmitted from the rear tires to the connecting portion. often become.

Then, due to the load from the front tires, the first module on the front side tends to move upward with respect to the second module on the rear side. However, at least a portion of the second floor portion overlaps the first floor portion in the longitudinal direction of the vehicle body from above at the connecting portion. Therefore, the portion of the first floor portion overlapping the second floor portion pushes up the portion of the second floor portion overlapping the first floor portion.

Thereby, it is possible to suppress separation of the first floor portion of the first module and the second floor portion of the second module at the connecting portion due to the load from the front tire.

A vehicle body structure according to a sixth aspect of the present invention includes a first module that constitutes a part of the vehicle body in the front-rear direction and has a first floor portion; and a second module having a second floor portion; a connecting portion that connects the floor portion and the second floor portion so that at least a portion of the first floor portion overlaps the second floor portion from above in the longitudinal direction of the vehicle body. do.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the first floor portion and the second floor portion are connected in a rear region close to the portion to which the load is transmitted from the rear tire with respect to the portion to which the load is transmitted from the front tire. When the floor is connected in the rear region, the load transmitted from the rear tires to the connecting portion is often greater than the load transmitted from the front tires to the connecting portion.

Then, due to the load from the rear tires, the second module on the rear side tends to move upward with respect to the first module on the front side. However, at the connecting portion, at least a portion of the first floor portion overlaps the second floor portion from above in the longitudinal direction of the vehicle body. Therefore, the portion of the second floor portion that overlaps the first floor portion pushes up the portion of the first floor portion that overlaps the second floor portion.

Thereby, it is possible to suppress separation of the first floor portion of the first module and the second floor portion of the second module at the connecting portion due to the load from the rear tires.

A vehicle body structure according to a seventh aspect of the present invention is the vehicle body structure according to the fifth aspect , which is arranged behind the second module, constitutes a part of the vehicle body in the front-rear direction, and has a third floor portion. The third module connects the second floor portion and the third floor portion in a rear region adjacent to the portion to which the load is input from the rear tires with respect to the portion to which the load is input from the front tires, At least part of the second floor portion includes another connecting portion that overlaps the third floor portion from above in the longitudinal direction of the vehicle body.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure runs on an uneven road surface, for example, a load pushing up the vehicle body is transmitted to the vehicle body via the tires. Here, the second floor portion and the third floor portion are connected in a rear region close to the portion to which the load is transmitted from the rear tire with respect to the portion to which the load is transmitted from the front tire. When the floor is connected in the rear region, the load transmitted from the rear tires to other connecting portions is often greater than the load transmitted from the front tires to the other connecting portions.

Then, due to the load from the rear tires, the rear third module tends to move upward with respect to the front second module. However, at other connecting portions, at least a portion of the second floor portion overlaps the third floor portion from above in the longitudinal direction of the vehicle body. Therefore, the portion of the third floor portion that overlaps the second floor portion pushes up the portion of the second floor portion that overlaps the third floor portion.

As a result, it is possible to prevent the second floor portion of the second module and the first floor portion of the third module from being separated from each other by the load from the rear tires at other connecting portions.

A vehicle body structure according to an eighth aspect of the present invention is the vehicle body structure according to any one of the fifth to seventh aspects , wherein the first A plurality of portions where the floor portion and the second floor portion overlap are formed.

According to the above configuration, a plurality of portions where the first floor portion and the second floor portion overlap are formed on a cross-sectional plane obtained by cutting the connecting portion in a direction intersecting the vehicle width direction. Thereby, it is possible to suppress separation of the first floor portion of the first module and the second floor portion of the second module at the connecting portion, as opposed to the case where the overlapping portion is one.

A vehicle body structure according to a ninth aspect of the present invention comprises a first module that constitutes a part of the vehicle body in the front-rear direction and has a first pillar portion; and connecting the second module having a second pillar portion, and the first pillar portion and the second pillar portion, at least a part of the first pillar portion being connected to the second and a connecting portion that overlaps with the pillar portion from the outside in the width direction of the vehicle body in the front-rear direction of the vehicle body.

According to the above configuration, when a vehicle equipped with a vehicle body employing this vehicle body structure turns, a load pushing the pillar inward in the vehicle width direction is transmitted to the pillar on the side away from the turning center. Regarding this load, the load transmitted to the first pillar portion is often greater than the load transmitted to the second pillar portion arranged behind the first pillar.

Then, the first pillar on the front side tends to move inward in the vehicle width direction with respect to the second pillar on the rear side. However, at least a portion of the first pillar portion overlaps the second pillar portion in the longitudinal direction of the vehicle body from the outside in the width direction of the vehicle body. Therefore, the portion of the first pillar portion that overlaps the second pillar portion pushes the portion of the second pillar portion that overlaps the first pillar portion inward in the vehicle width direction.

As a result, the first pillar portion of the first module and the second pillar portion of the second module can be prevented from being separated from each other at the connecting portion due to the load transmitted to the pillars when the vehicle turns. .

A vehicle body structure according to a tenth aspect of the present invention is the vehicle body structure according to the ninth aspect , wherein the first pillar portion and the second pillar portion are separated from each other by a cross-sectional plane obtained by cutting the connecting portion in a direction intersecting the vertical direction. A plurality of overlapping portions are formed.

According to the above configuration, a plurality of portions where the first pillar portion and the second pillar portion overlap are formed on a cross-sectional plane obtained by cutting the connecting portion in a direction intersecting the vertical direction. As a result, it is possible to suppress the separation of the first pillar portion of the first module and the second pillar portion of the second module at the connecting portion, as opposed to the case where the overlapping portion is one.

According to the present invention, a load pushed up from the road surface during running is transmitted to the vehicle body. module can be suppressed from being separated.

1A and 1B are cross-sectional views showing the configuration of a roof and the configuration of a floor of a vehicle body employing the vehicle body structure according to the first embodiment of the present invention; FIG. 1 is an exploded perspective view showing the configuration of a roof of a vehicle body employing the vehicle body structure according to the first embodiment of the present invention; FIG. 1 is an exploded perspective view showing the configuration of a floor of a vehicle body employing the vehicle body structure according to the first embodiment of the present invention; FIG. 1 is a plan view showing a vehicle body employing a vehicle body structure according to a first embodiment of the invention; FIG. 1 is a side view showing a vehicle body employing a vehicle body structure according to a first embodiment of the invention; FIG. 1 is an exploded perspective view showing a vehicle body employing a vehicle body structure according to a first embodiment of the invention; FIG. 1 is a perspective view showing a vehicle body employing a vehicle body structure according to a first embodiment of the invention; FIG. 7A and 7B are cross-sectional views showing the configuration of the roof and the configuration of the floor of a vehicle body employing a vehicle body structure according to a comparative example with respect to the first embodiment of the present invention; FIG. FIG. 7 is a cross-sectional view showing the configuration of a pillar of a vehicle body that employs a vehicle body structure according to a second embodiment of the present invention; FIG. 7 is an exploded perspective view showing the structure of a pillar of a vehicle body that employs a vehicle body structure according to a second embodiment of the present invention; FIG. 10 is a plan view showing a vehicle body employing a vehicle body structure according to a second embodiment of the present invention; FIG. 11 is an exploded perspective view showing a vehicle body employing a vehicle body structure according to a second embodiment of the invention; 8A and 8B are sectional views showing the configuration of the roof and the configuration of the floor of the vehicle body employing the vehicle body structure according to the third embodiment of the present invention; FIG. FIG. 12 is an exploded perspective view showing the configuration of the roof of the vehicle body employing the vehicle body structure according to the third embodiment of the present invention; FIG. 11 is an exploded perspective view showing the configuration of the floor of the vehicle body employing the vehicle body structure according to the third embodiment of the present invention; FIG. 11 is a plan view showing a vehicle body employing a vehicle body structure according to a third embodiment of the present invention; FIG. 11 is an exploded perspective view showing a vehicle body employing a vehicle body structure according to a third embodiment of the invention; 8A and 8B are cross-sectional views showing the configuration of the roof and the configuration of the floor of the vehicle body employing a modified example of the embodiment of the present invention; FIG. 8A and 8B are cross-sectional views showing the configuration of the roof and the configuration of the floor of the vehicle body employing a modified example of the embodiment of the present invention; FIG.

<First embodiment>
An example of a vehicle body 100 employing the vehicle body structure 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. An arrow H shown in the drawing indicates the vertical direction of the vehicle body, an arrow L indicates the horizontal direction of the longitudinal direction of the vehicle body, and an arrow W indicates the horizontal direction of the vehicle width direction. The right side of the vehicle body (one side in the width direction of the vehicle body) and the left side of the vehicle body (the other side in the width direction of the vehicle body) are symmetrical with respect to the center in the width direction of the vehicle body.

As shown in FIGS. 6 and 7, the vehicle body 100 is connected to two modules 12a and 12b in the longitudinal direction of the vehicle body. Lined up.

Specifically, the module 12a and the module 12b are connected in the longitudinal direction of the vehicle body in front of the center pillar 60 and in a portion behind the front pillar 20 .

(Module 12a)
6 and 7, the module 12a includes a pair of front members 14, a dash panel 16, a pair of suspension towers 18, a pair of front pillars 20, a front roof 22, and a pair of front and side roof rails 68 . Further, the module 12a has a pair of front rockers 24, a front floor 26, and a pair of front floor members 28. As shown in FIG.

The pair of front members 14 are frame members forming the frame of the vehicle body, and are spaced apart in the width direction of the vehicle body. Each front member 14 extends in the longitudinal direction of the vehicle body.

The dash panel 16 is arranged at the rear end portion of the front member 14 with its plate surface directed in the longitudinal direction of the vehicle body. The dash panel 16 has a rectangular shape extending in the width direction of the vehicle body when viewed in the longitudinal direction of the vehicle body, and partitions the engine room 30a and the passenger space 30b.

The pair of suspension towers 18 are spaced apart in the width direction of the vehicle body within the engine room 30a. Each suspension tower 18 is formed with a circular hole 18a into which the upper end portion of the front suspension is inserted.

A pair of front pillars 20 and a frame member forming a framework of the vehicle body are spaced apart in the width direction of the vehicle body. Each front pillar 20 extends in a direction inclined with respect to the vertical direction of the vehicle body, and is welded to the end portion of the dash panel 16 in the vehicle width direction at its lower portion.

The pair of front roof rails 68 are frame members forming the frame of the vehicle body, and are welded to the upper end portions of the front pillars 20 at their front end portions, and extend rearward from the upper end portions of the front pillars 20. . A roof rail 50 (see FIG. 7) is formed by connecting the front side roof rail 68 and a rear side roof rail 42, which will be described later, in the longitudinal direction of the vehicle body.

The front roof 22 is arranged between a pair of front roof rails 68 . A roof 32 (see FIG. 7) is formed by connecting the front side roof 22 and a rear side roof 52, which will be described later, in the longitudinal direction of the vehicle body. Details of the connection structure between the front roof 22 and the rear roof 52 will be described later.

The pair of front side rockers 24 are frame members forming the frame of the vehicle body, and extend rearward from the lower end portions of the front pillars 20 . A locker 34 (see FIG. 7) is formed by connecting the front rocker 24 and a rear rocker 54, which will be described later, in the longitudinal direction of the vehicle body.

The front floor 26 is arranged between the pair of front rockers 24 . A floor 36 (see FIG. 7) is formed by connecting the front side floor 26 and a rear side floor 56, which will be described later, in the longitudinal direction of the vehicle body. The details of the connection structure between the front floor 26 and the rear floor 56 will be described later.

The pair of front side floor members 28 are frame members forming the frame of the vehicle body, are arranged below the front side floor 26 , and extend rearward from the rear end portion of the front member 14 . A floor member 38 is formed by connecting the front side floor member 28 and a rear side floor member 58, which will be described later, in the longitudinal direction of the vehicle body.

(Module 12b)
6 and 7, the module 12b includes a rear roof 52, a pair of rear roof rails 42, a pair of rear rockers 54, a rear floor 56, and a pair of rear floor members 58. and Further, the module 12b has a pair of center pillars 60, a pair of rear pillars 62 and a pair of suspension towers 64.

The pair of rear roof rails 42 are frame members forming the framework of the vehicle body, and are welded to the rear end portions of the front roof rails 68 at their front ends. extends to

The rear roof 52 is arranged between the pair of rear roof rails 42 . The rear roof 52 is connected at its front end portion to the rear end portion of the front roof 22 and extends rearward from the rear end portion of the front roof 22 .

The pair of rear rockers 54 are frame members forming the framework of the vehicle body, and are welded to the rear end portions of the front rockers 24 at their front end portions. extends to

A rear floor 56 is arranged between the pair of rear rockers 54 . The rear floor 56 is connected at its front end to the rear end of the front floor 26 and extends rearward from the rear end of the front floor 26 .

The pair of rear floor members 58 are frame members forming the framework of the vehicle body, and are arranged below the rear floor 56 . The pair of rear floor members 58 are welded at their front end portions to the rear end portions of the front floor members 28 and extend rearward from the rear end portions of the front floor members 28 .

The pair of center pillars 60 are frame members forming the framework of the vehicle body, and are spaced apart in the width direction of the vehicle body. Each center pillar 60 extends in the vertical direction of the vehicle body, is welded to the roof rail 50 at its upper end, and is welded to the rocker 34 at its lower end.

The pair of rear pillars 62 are frame members forming the frame of the vehicle body, and are spaced apart in the width direction of the vehicle body. Each rear pillar 62 extends in a direction inclined with respect to the vertical direction of the vehicle body, and is welded to the rear end portion of the rear roof 52 at its upper end portion, and is connected to the rear end of the rear rocker 54 at its lower end portion. parts are joined by welding.

A pair of suspension towers 64 are behind the rear pillar 62 and spaced apart in the width direction of the vehicle body. Each suspension tower 64 is formed with a circular hole 64a into which the front end of the rear suspension is inserted.

(main part configuration)
Next, the connection position SP01 between the modules 12a and 12b, the connection structure between the front roof 22 and the rear roof 52, and the connection structure between the front floor 26 and the rear floor 56 will be described. First, the connection position SP01 between the module 12a and the module 12b will be described. Here, the "module" is a part of the vehicle body in the front-rear direction, and is separated from other modules in the front-rear direction by releasing the connection at the connecting portion. Module 12a is an example of a first module, and module 12b is an example of a second module.

[Connection position SP01 between module 12a and module 12b]
As described above, the modules 12a and 12b are connected in the longitudinal direction of the vehicle body in front of the center pillar 60 and behind the front pillar 20 . Specifically, the module 12a and the module 12b are connected in a front region close to the portion to which the load is transmitted from the front tire with respect to the portion to which the load is transmitted from the rear tire. It should be noted that the "connection position" is the position where the roof panel is connected to the space outside the vehicle, and the floor is connected to the passenger space 30b. position.

Here, the portion to which the load is transmitted from the rear tire is the portion of the rear suspension tower 64 in which the circular hole 64a into which the tip portion of the rear suspension is inserted is formed. The portion to which the load is transmitted from the front tire is the portion of the front suspension tower 18 where the circular hole 18a is formed in the suspension tower 18 into which the front end portion of the front suspension is inserted.

That is, as shown in FIGS. 4 and 5, the connecting position SP01 between the module 12a and the module 12b is located at the suspension tower 18 with respect to the center of the circular hole 64a formed in the suspension tower 64 in the longitudinal direction of the vehicle body. It is the forward region proximate the center of the formed circular hole 18a. More specifically, in the longitudinal direction of the vehicle body, the distance L01 between the connecting position SP01 and the center of the hole 18a is shorter than the distance L02 between the connecting position SP01 and the center of the hole 64a.

That is, the "front area" is an area that is closer to the center of the circular hole 18a formed in the suspension tower 18 than the center of the circular hole 64a formed in the suspension tower 64 in the longitudinal direction of the vehicle body.

The roof 32 and floor 36 are connected in the front area.

[Connection structure between front roof 22 and rear roof 52]
-Front side roof 22-
As shown in FIGS. 1A and 2, the front roof 22 is connected to the rear roof 52 with a roof panel 66 disposed between a pair of front roof rails 68 (see FIG. 6). It has a reinforcement 72 forming a connecting portion 78 for. The front roof 22 is an example of a first roof portion.

The rear end portion of the roof panel 66 also constitutes a connecting portion 78, and the rear end portion of the roof panel 66 is formed in a staircase shape. Specifically, at the rear end portion of the roof panel 66, a first stepped portion 82 and a second stepped portion 84 are arranged below the general portion 80 (the portion facing the vehicle exterior space) of the roof panel 66. and are formed. Furthermore, a connecting portion 86 that connects the first stepped portion 82 and the second stepped portion 84 is formed. The plate surface of the first stepped portion 82 and the plate surface of the second stepped portion 84 are oriented in the vertical direction of the vehicle body, and the plate surface of the connection portion 86 is oriented in the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 80 and the first step portion 82 is smaller than the step amount between the first step portion 82 and the second step portion 84 .

The reinforcement 72 is formed by bending a sheet metal, is arranged on the passenger space 30b side with respect to the rear end portion of the roof panel 66, and extends in the width direction of the vehicle body. Further, a cross section perpendicular to the longitudinal direction of the reinforcement 72 has a crank shape.

A base portion 74 is formed in the reinforcement 72 along the second stepped portion 84 below the second stepped portion 84 of the roof panel 66 . Specifically, the rear end portion of the base portion 74 extends along the second stepped portion 84 . Further, the rear edge of the base portion 74 and the rear edge of the second stepped portion 84 overlap in the vertical direction. Further, the reinforcement 72 is formed with a stepped portion 76 formed on the front side of the base portion 74 via a step with the base portion 74 and extending along the general portion 80 below the general portion 80 of the roof panel 66. there is

The general portion 80 of the roof panel 66 and the stepped portion 76 of the reinforcement 72 are joined using a sheet metal adhesive, and the second stepped portion 84 of the roof panel 66 and the base portion 74 of the reinforcement 72 are joined by welding. ing.

-Rear side roof 52-
As shown in FIGS. 1A and 2, the rear roof 52 connects the roof panel 40 arranged between a pair of rear roof rails 42 (see FIG. 6) and the front roof 22. It has a reinforcement 44 that constitutes a connecting portion 78 for. The rear roof 52 is an example of a second roof portion.

The front end portion of the roof panel 40 also constitutes the connecting portion 78, and the front end portion of the roof panel 40 is not formed with an uneven shape.

The reinforcement 44 is formed by bending a sheet metal, is arranged on the passenger space 30b side with respect to the front end portion of the roof panel 40, and extends in the width direction of the vehicle body. Furthermore, the cross section perpendicular to the longitudinal direction of the reinforcement 44 has a hat shape with an upper opening. A pair of flange portions 44 a and 44 b extending along the roof panel 40 below the roof panel 40 are formed on the reinforcement 44 . The flange portion 44a and the flange portion 44b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the front side to the rear side. Also, the front edge of the flange portion 44a and the front edge of the roof panel 40 overlap in the vertical direction.

Further, the reinforcement 44 is formed with a bottom portion 46 between the flange portions 44a and 44b in the longitudinal direction of the vehicle body via a step between the flange portions 44a and 44b. A cross section perpendicular to the longitudinal direction of the bottom portion 46 is crank-shaped, and the bottom portion 46 is formed with a first stepped portion 46a and a second stepped portion 46b whose plate surfaces face the vertical direction. The first stepped portion 46a and the second stepped portion 46b are arranged in this order from the front side to the rear side, and the first stepped portion 46a is arranged above the second stepped portion 46b. .

Further, the reinforcement 44 is formed with a connection portion 48 that connects the flange portion 44a and the first stepped portion 46a. A plate surface of the connecting portion 48 faces the longitudinal direction of the vehicle body.

The roof panel 40 and the flange portion 44a of the reinforcement 44 are joined using a sheet metal adhesive, and the roof panel 40 and the flange portion 44b of the reinforcement 44 are joined using a sheet metal adhesive.

In this configuration, when the module 12a and the module 12b are connected by the connecting portion 78, the flange portion 44a of the rear roof 52 overlaps and contacts the first stepped portion 82 of the front roof 22 from above. there is Further, the first stepped portion 46a of the rear roof 52 overlaps and contacts the second stepped portion 84 of the front roof 22 from above. The connecting portion 86 of the front roof 22 and the connecting portion 48 of the rear roof 52 face each other in the longitudinal direction of the vehicle body.

The front edge of the rear roof 52 is joined to the front roof 22 by laser welding, and the rear edge of the front roof 22 is joined to the rear roof 52 by laser welding. and the rear side roof 52 are connected.

Here, from the viewpoint of suppressing separation (details will be described later) of the module 12a and the module 12b at the connecting portion 78 when the vehicle runs on an uneven road surface, for example, the connecting portion 78 is a vehicle body of the roof. Assuming that the length in the width direction is 100, it is preferable to provide 60 or more, more preferably 80 or more, and particularly preferably 90 or more.

Regarding the connection between the front side roof rail 68 and the rear side roof rail 42, it is inserted into the end portion of the front side roof rail 68 and the rear side roof rail 42 and supports each member from the inner peripheral side. A shaped insert 510 (see FIG. 2) may be used to connect.

[Connection structure between front floor 26 and rear floor 56]
-Front side floor 26-
As shown in FIGS. 1A and 3, the front floor 26 is connected to the rear floor 56 with a floor panel 98 arranged between the pair of front lockers 24 (see FIG. 6). It has reinforcements 102a, 102b, and 102c that constitute a connecting portion 88 for the purpose. A pair of front side floor members 28 extending in the longitudinal direction of the vehicle body are welded to the lower surface of the floor panel 98 so as to be spaced apart in the width direction of the vehicle body. The front floor 26 is an example of a first floor section.

The rear end portion of the floor panel 98 also constitutes the connecting portion 88, and the rear end portion of the floor panel 98 is formed in a staircase shape. Specifically, the rear end portion of the floor panel 98 to which the front floor member 28 is not joined protrudes rearward from the front floor member 28 and is formed in a stepped shape. In addition, the rear end portion to which the front floor member 28 is joined does not protrude rearward from the front floor member 28 , and the rear edge of the rear end portion of the floor panel 98 and the rear of the front floor member 28 are separated from each other. The edges overlap in the vertical direction.

A first stepped portion 92 and a second stepped portion 92 arranged below the general portion 90 (the portion facing the passenger space 30b) of the floor panel 98 are provided at the rear end portion of the floor panel 98, which is formed in a staircase shape. A step portion 94 is formed. Furthermore, a connecting portion 96 is formed to connect the first stepped portion 92 and the second stepped portion 94 . The plate surface of the first stepped portion 92 and the plate surface of the second stepped portion 94 are oriented in the vertical direction of the vehicle body, and the plate surface of the connecting portion 96 is oriented in the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 90 and the first step portion 92 is smaller than the step amount between the first step portion 92 and the second step portion 94 .

The reinforcement 102a is formed by bending a sheet metal, is arranged between one front rocker 24 and one front floor member 28, and extends in the width direction of the vehicle body. The reinforcement 102b is formed by bending a sheet metal, is arranged between the pair of front side floor members 28, and extends in the width direction of the vehicle body. The reinforcement 102c is formed by bending a sheet metal, is arranged between the other front rocker 24 and the other front floor member 28, and extends in the width direction of the vehicle body.

Cross-sections of the reinforcements 102a, 102b, and 102c perpendicular to each other in the longitudinal direction are crank-shaped and have the same shape. Hereinafter, the reinforcements 102a, 102b, and 102c are referred to as the reinforcements 102 unless otherwise distinguished.

The reinforcement 102 is formed with a base portion 104 extending along the second stepped portion 94 below the second stepped portion 94 of the floor panel 98 . Specifically, the rear end portion of the base portion 104 extends along the second stepped portion 94 . Further, the rear edge of the base portion 104 and the rear edge of the second stepped portion 94 overlap in the vertical direction. Further, the reinforcement 102 is formed with a stepped portion 106 that is formed on the front side of the base portion 104 via a step with the base portion 104 and that extends along the general portion 90 below the general portion 90 of the floor panel 98. there is

The general portion 90 of the floor panel 98 and the step portion 106 of the reinforcement 102 are joined using a sheet metal adhesive, and the second step portion 94 of the floor panel 98 and the base portion 104 of the reinforcement 102 are joined by welding. ing.

-Rear side floor 56-
As shown in FIGS. 1A and 3, the rear floor 56 is connected to the front floor 26 and the floor panel 108 arranged between the pair of rear lockers 54 (see FIG. 6). It has reinforcements 114a, 114b, and 114c that form a connecting portion 88 for the purpose. A pair of rear side floor members 58 extending in the longitudinal direction of the vehicle body are welded to the lower surface of the floor panel 108 so as to be spaced apart in the width direction of the vehicle body. The rear floor 56 is an example of a second floor section.

The front end portion of the floor panel 108 also constitutes the connecting portion 88, and the front end portion of the floor panel 108 is not formed with an uneven shape.

The reinforcement 114a is formed by bending a sheet metal, is arranged between one rear rocker 54 and one rear floor member 58, and extends in the width direction of the vehicle body. The reinforcement 114b is formed by bending a sheet metal, is arranged between the pair of rear side floor members 58, and extends in the width direction of the vehicle body. The reinforcement 114c is formed by bending a sheet metal, is arranged between the other rear rocker 54 and the other rear floor member 58, and extends in the width direction of the vehicle body.

Cross-sections of the reinforcements 114a, 114b, and 114c perpendicular to each other in the longitudinal direction are hat-shaped with an upper opening, and are similar to each other. Hereinafter, the reinforcements 114a, 114b, and 114c will be referred to as the reinforcements 114 unless otherwise distinguished.

A pair of flange portions 124 a and 124 b extending along the floor panel 108 below the floor panel 108 are formed on the reinforcement 114 . The flange portion 124a and the flange portion 124b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the front side to the rear side. Also, the front edge of the flange portion 124a and the front edge of the floor panel 108 overlap in the vertical direction.

Further, in the reinforcement 114, a bottom portion 116 is formed between the flange portions 124a and 124b in the longitudinal direction of the vehicle body via a step between the flange portions 124a and 124b. A cross section orthogonal to the longitudinal direction of the bottom portion 116 is crank-shaped, and the bottom portion 116 is formed with a first stepped portion 116a and a second stepped portion 116b whose plate surfaces face the vertical direction. The first stepped portion 116a and the second stepped portion 116b are arranged in this order from the front side to the rear side, and the first stepped portion 116a is arranged above the second stepped portion 116b. .

Further, the reinforcement 114 is formed with a connection portion 118 that connects the flange portion 124a and the first stepped portion 116a. A plate surface of the connection portion 118 faces the front-rear direction of the vehicle body.

The floor panel 108 and the flange portion 124a of the reinforcement 114 are joined using a sheet metal adhesive, and the floor panel 108 and the flange portion 124b of the reinforcement 114 are joined using a sheet metal adhesive.

In this configuration, when the module 12a and the module 12b are connected by the connecting portion 88, the flange portion 124a of the rear floor 56 overlaps and contacts the first step portion 92 of the front floor 26 from above. there is Further, the first stepped portion 116a of the rear floor 56 overlaps and contacts the second stepped portion 94 of the front floor 26 from above. Also, the connecting portion 96 of the front floor 26 and the connecting portion 118 of the rear floor 56 face each other in the longitudinal direction of the vehicle body.

The front edge of the rear floor 56 is joined to the front floor 26 by laser welding, and the rear edge of the front floor 26 is joined to the rear floor 56 by laser welding. and the rear side floor 56 are connected.

Here, from the viewpoint of suppressing separation (details will be described later) of the module 12a and the module 12b at the connecting portion 88 when the vehicle runs on an uneven road surface, for example, the connecting portion 88 is provided with a floor member. Assuming that the length of the floor in the width direction of the vehicle body excluding the portion where it is arranged is 100, it is preferable to provide 60 or more, more preferably 80 or more, and particularly preferably 90 or more.

Regarding the connection between the front side rocker 24 and the rear side rocker 54, it is inserted into the end portion of the front side locker 24 and the end portion of the rear side locker 54, and a cylinder supporting each member from the inner peripheral side is provided. A shaped insert 520 (see FIG. 3) may be used for connection.

As for the connection between the front side floor member 28 and the rear side floor member 58, the end portions of the front side floor member 28 and the rear side floor member 58 are inserted into the respective members from the inner peripheral surface side. may be connected using a tubular insert 530 (see FIG. 3) that supports the .

(action)
Next, the operation of the essential configuration will be described while comparing with the vehicle body structure 810 according to the comparative embodiment. First, a vehicle body structure 810 according to a comparative embodiment will be described. Regarding the vehicle body structure 810, the parts that differ from the vehicle body structure 10 of the present embodiment will be mainly described.

[Car body structure 810]
First, the connection structure between the front roof 822 and the rear roof 852 of the vehicle body 800 employing the vehicle body structure 810 will be described, and then the connection structure between the front floor 826 and the rear floor 856 will be described.

-Connection structure between front roof 822 and rear roof 852-
As shown in FIG. 8A, the front roof 822 has a roof panel 870 and a reinforcement 844 forming a connecting portion 878 for connecting with the rear roof 852 . The rear end portion of the roof panel 870 is not formed with an uneven shape.

The reinforcement 844 is formed by bending a sheet metal, is arranged at the rear end portion of the roof panel 870 and on the side of the passenger space 30b with respect to the rear end portion of the roof panel 870, and extends in the width direction of the vehicle body. there is Furthermore, the cross section perpendicular to the longitudinal direction of the reinforcement 844 has a hat shape with an open top. A pair of flange portions 844 a and 844 b extending along the roof panel 870 below the roof panel 870 are formed on the reinforcement 844 . The flange portion 844a and the flange portion 844b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the rear side to the front side. Also, the rear edge of the flange portion 844a and the rear edge of the roof panel 870 overlap in the vertical direction.

Further, in the reinforcement 844, a bottom portion 846 is formed between the flange portions 844a and 844b in the longitudinal direction of the vehicle body via a step between the flange portions 844a and 844b. A cross section orthogonal to the longitudinal direction of the bottom portion 846 is crank-shaped, and the bottom portion 846 is formed with a first stepped portion 846a and a second stepped portion 846b whose plate surfaces face the vertical direction. The first stepped portion 846a and the second stepped portion 846b are arranged in this order from the rear side to the front side, and the first stepped portion 846a is arranged above the second stepped portion 846b. .

Further, the reinforcement 844 is formed with a connection portion 848 that connects the flange portion 844a and the first stepped portion 846a. A plate surface of the connection portion 848 faces the longitudinal direction of the vehicle body.

The roof panel 870 and the flange portion 844a of the reinforcement 844 are joined using a sheet metal adhesive, and the roof panel 870 and the flange portion 844b of the reinforcement 844 are joined using a sheet metal adhesive.

As shown in FIG. 8A, the rear roof 852 has a roof panel 866 and a reinforcement 872 forming a connecting portion 878 for connecting with the front roof 822 .

A front end portion of the roof panel 866 is formed in a stepped shape. Specifically, the front end portion of the roof panel 866 is formed with a first stepped portion 882 and a second stepped portion 884 located below the general portion 880 of the roof panel 866 . Furthermore, a connecting portion 886 is formed to connect the first stepped portion 882 and the second stepped portion 884 . The plate surface of the first stepped portion 882 and the plate surface of the second stepped portion 884 are oriented in the vertical direction of the vehicle body, and the plate surface of the connection portion 886 is oriented in the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 880 and the first step portion 882 is smaller than the step amount between the first step portion 882 and the second step portion 884 .

The reinforcement 872 is formed by bending sheet metal, is arranged at the front end portion of the roof panel 866 and on the side of the passenger space 30b with respect to the front end portion of the roof panel 866, and extends in the width direction of the vehicle body. Further, a cross section perpendicular to the longitudinal direction of the reinforcement 872 has a crank shape.

A base portion 874 is formed on the reinforcement 872 along the second stepped portion 884 below the second stepped portion 884 of the roof panel 866 . Specifically, the front end portion of the base portion 874 runs along the second stepped portion 884 . Also, the front edge of the base portion 874 and the front edge of the second stepped portion 884 overlap in the vertical direction. Further, the reinforcement 872 is formed with a stepped portion 876 formed on the rear side of the base portion 874 via a step with the base portion 874 and extending along the general portion 880 below the general portion 880 of the roof panel 866 . there is

The general portion 880 of the roof panel 866 and the stepped portion 876 of the reinforcement 872 are joined using a sheet metal adhesive, and the second stepped portion 884 of the roof panel 866 and the base portion 874 of the reinforcement 872 are joined by welding. ing.

In this configuration, when the module 12a and the module 12b are connected by the connecting portion 78, the flange portion 844a of the front roof 822 overlaps and contacts the first step portion 882 of the rear roof 852 from above. there is Further, the first stepped portion 846a of the front roof 822 overlaps and contacts the second stepped portion 884 of the rear roof 852 from above. Also, the connecting portion 886 of the rear roof 852 and the connecting portion 848 of the front roof 822 face each other in the longitudinal direction of the vehicle body.

The rear edge of the front roof 822 is joined to the rear roof 852 by laser welding, and the front edge of the rear roof 852 is joined to the front roof 822 by laser welding. and the rear side roof 852 are connected.

-Connection structure between front floor 826 and rear floor 856-
As shown in FIG. 8B, the front floor 826 has a floor panel 910 and a reinforcement 914 forming a connecting portion 888 for connecting with the rear floor 856 . Also, the rear end portion of the floor panel 910 is not formed with an uneven shape.

The reinforcement 914 is formed by bending a sheet metal, is arranged at the rear end portion of the floor panel 910 and below the rear end portion of the floor panel 910, and extends in the width direction of the vehicle body. Furthermore, the cross section perpendicular to the longitudinal direction of the reinforcement 914 has a hat shape with an upper opening. A pair of flange portions 924 a and 924 b extending along the floor panel 910 below the floor panel 910 are formed on the reinforcement 914 . The flange portion 924a and the flange portion 924b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the rear side to the front side. Also, the rear edge of the flange portion 924a and the rear edge of the floor panel 910 overlap in the vertical direction.

Further, in the reinforcement 914, a bottom portion 916 is formed between the flange portions 924a and 924b in the longitudinal direction of the vehicle body via a step between the flange portions 924a and 924b. A cross section orthogonal to the longitudinal direction of the bottom portion 916 is crank-shaped, and the bottom portion 916 is formed with a first stepped portion 916a and a second stepped portion 916b whose plate surfaces face the vertical direction. The first stepped portion 916a and the second stepped portion 916b are arranged in this order from the rear side to the front side, and the first stepped portion 916a is arranged above the second stepped portion 916b. .

Further, the reinforcement 914 is formed with a connection portion 918 that connects the flange portion 924a and the first stepped portion 916a. A plate surface of the connecting portion 918 faces the longitudinal direction of the vehicle body.

The floor panel 910 and the flange portion 924a of the reinforcement 914 are joined using a sheet metal adhesive, and the floor panel 910 and the flange portion 924b of the reinforcement 914 are joined using a sheet metal adhesive.

The rear floor 856 has, as shown in FIG. 8B, a floor panel 896 and a reinforcement 902 forming a connecting portion 888 for connecting with the front floor 826 .

A front end portion of the floor panel 896 is formed in a stepped shape. Specifically, the front end portion of the floor panel 896 is formed with a first stepped portion 922 and a second stepped portion 925 located below the general portion 920 of the floor panel 896 . Furthermore, a connecting portion 926 is formed to connect the first stepped portion 922 and the second stepped portion 925 . The plate surface of the first stepped portion 922 and the plate surface of the second stepped portion 925 face the vertical direction of the vehicle body, and the plate surface of the connection portion 926 faces the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 920 and the first step portion 922 is smaller than the step amount between the first step portion 922 and the second step portion 925 .

The reinforcement 902 is formed by bending a sheet metal, is arranged at the front end portion of the floor panel 896 and below the front end portion of the floor panel 896, and extends in the width direction of the vehicle body. Furthermore, a cross section orthogonal to the longitudinal direction of the reinforcement 902 is crank-shaped.

The reinforcement 902 is formed with a base portion 904 extending along the second stepped portion 925 below the second stepped portion 925 of the floor panel 896 . Specifically, the front end portion of the base portion 904 runs along the second stepped portion 925 . Also, the front edge of the base portion 904 and the front edge of the second stepped portion 925 overlap in the vertical direction. Further, the reinforcement 902 has a stepped portion 906 that is formed on the rear side of the base portion 904 via a step with the base portion 904 and that extends along the general portion 920 below the general portion 920 of the floor panel 896 . there is

The general portion 920 of the floor panel 896 and the stepped portion 906 of the reinforcement 902 are joined using a sheet metal adhesive, and the second stepped portion 925 of the floor panel 896 and the base portion 904 of the reinforcement 902 are joined by welding. ing.

In this configuration, when the module 12a and the module 12b are connected by the connecting portion 888, the flange portion 924a of the front floor 826 overlaps and contacts the first step portion 922 of the rear floor 856 from above. there is Further, the first stepped portion 916a of the front floor 826 overlaps and contacts the second stepped portion 925 of the rear floor 856 from above. Also, the connecting portion 926 of the rear floor 856 and the connecting portion 918 of the front floor 826 face each other in the longitudinal direction of the vehicle body.

The front edge of the rear floor 856 is joined to the front floor 826 by laser welding, and the rear edge of the front floor 826 is joined to the rear floor 856 by laser welding. and the rear side floor 856 are connected.

[Action of vehicle body structure 10, 810]
When a vehicle (not shown) equipped with a vehicle body 100, 800 that employs the vehicle body structure 10, 810 runs on, for example, an uneven road surface, the vehicle body 100, 800 receives a load that pushes the vehicle body 100, 800 through the tires. conveys. Specifically, the load from the front tires is transmitted from the suspension tower 18 (see FIG. 4) on the front side of the vehicle body to the vehicle body 100, 800, and the load from the rear tires is transmitted from the suspension tower 64 on the rear side of the vehicle body to the vehicle body. 100, communicate to 800.

Here, the connection position SP01 of the vehicle body structures 10, 810 is located in a front region near the center of the circular hole 18a of the suspension tower 18 with respect to the center of the circular hole 64a of the suspension tower 64 in the longitudinal direction of the vehicle body. Therefore, in the connecting portions 78, 88, 878, 888 of the vehicle body structure 10, 810, the load transmitted from the front tires to the connecting portions 78, 88, 878, 888 is transferred from the rear tires to the connecting portions 78, 88, 878, 888. It is often larger than the load transmitted to the

Therefore, in the connecting portion 878 of the vehicle body structure 810 according to the comparative embodiment, the front roof 822 may move upward and be separated from the rear roof 852 as shown in FIG. 8(A). (Refer to the two-dot chain line in the figure).

Also, in the connecting portion 888 of the vehicle body structure 810, the front floor 826 may move upward and be separated from the rear floor 856, as shown in FIG. 8B.

On the other hand, in the connecting portion 78 of the vehicle body structure 10 according to the present embodiment, as shown in FIG. 1A, when the front roof 22 moves upward, the first step portion 82 of the front roof 22 pushes up the flange portion 44 a of the rear roof 52 . Furthermore, the second stepped portion 84 of the front side roof 22 pushes up the first stepped portion 46a of the rear side roof 52 .

Further, in the connecting portion 88 of the vehicle body structure 10, as shown in FIG. Push up the portion 124a. Furthermore, the second stepped portion 94 of the front side floor 26 pushes up the first stepped portion 116a of the rear side floor 56 .

(summary)
As described above, in the vehicle body structure 10 , when a load pushing up the vehicle body 100 is transmitted from the suspension tower 18 to the vehicle body 100 via the front tires, the first stepped portion 82 of the front roof 22 is pushed into the flange of the rear roof 52 . Push up the portion 44a. As a result, the front roof 22 of the module 12a and the rear roof 52 of the module 12b can be prevented from being separated at the connecting portion 78 due to the load from the front tires.

Further, in the vehicle body structure 10, when a load pushing up the vehicle body 100 is transmitted from the suspension tower 18 to the vehicle body 100 via the front tires, the second stepped portion 84 of the front roof 22 is moved to the first stepped portion 46a of the rear roof 52. push up. As a result, it is possible to prevent the front roof 22 of the module 12a and the rear roof 52 of the module 12b from being separated from each other at the connecting portion 78 due to the load from the front tires.

In the vehicle body structure 10 , when a load pushing up the vehicle body 100 is transmitted from the suspension tower 18 to the vehicle body 100 via the front tires, the first stepped portion 92 of the front floor 26 pushes up the flange portion 124 a of the rear floor 56 . . As a result, the front floor 26 of the module 12a and the rear floor 56 of the module 12b can be prevented from being separated at the connecting portion 88 due to the load from the front tires.

Further, in the vehicle body structure 10 , when a load pushing up the vehicle body 100 is transmitted from the suspension tower 18 to the vehicle body 100 via the front tires, the second stepped portion 94 of the front floor 26 moves to the first stepped portion 116 a of the rear floor 56 . push up. As a result, the front floor 26 of the module 12a and the rear floor 56 of the module 12b can be prevented from being separated at the connecting portion 88 due to the load from the front tires.

In the vehicle body structure 10, the connecting portion 48 of the rear roof 52 and the connecting portion 86 of the front roof 22 face each other in the longitudinal direction of the vehicle body. Therefore, it is possible to prevent the rear end portion of the module 12a from moving rearward with respect to the front end portion of the module 12b at the connecting portion 78 in the event of a frontal collision.

In the vehicle body structure 10, the connecting portion 96 of the front floor 26 and the connecting portion 118 of the rear floor 56 face each other in the longitudinal direction of the vehicle body. Therefore, it is possible to prevent the rear end portion of the module 12a from moving rearward with respect to the front end portion of the module 12b at the connecting portion 88 in the event of a frontal collision.

<Second embodiment>
An example of a vehicle body 200 employing the vehicle body structure 210 according to the second embodiment of the invention will be described with reference to FIGS. 9 to 12. FIG. In addition, about 2nd Embodiment, a different part from 1st Embodiment is mainly demonstrated.

As shown in FIGS. 11 and 12, the vehicle body 200 is connected to two modules 212a and 212b in the longitudinal direction of the vehicle body. Lined up.

Specifically, the module 212a and the module 212b are connected by a center pillar 260 in the longitudinal direction of the vehicle body. Module 212a is an example of a first module, and module 212b is an example of a second module.

(Connecting position SP02 between module 212a and module 212b)
The module 212a and the module 212b are connected in the longitudinal direction of the vehicle body by the center pillar 260, as described above. Specifically, the modules 212a and 212b are connected at an intermediate position between the portion to which the load is transmitted from the rear tires and the portion to which the load is transmitted from the front tires.

That is, as shown in FIG. 11, the connection position SP02 between the module 212a and the module 212b is determined by the distance from the center of the circular hole 64a formed in the suspension tower 64 and the distance from the center of the circular hole 64a formed in the suspension tower 18 in the vehicle longitudinal direction. This is the position where the distances from the center of the circular hole 18a are the same. Specifically, in the longitudinal direction of the vehicle body, the distance L03 between the connecting position SP02 and the center of the hole 18a is the same as the distance L04 between the connecting position SP02 and the center of the hole 64a.

Thus, the "intermediate position" is a position where the distance L03 from the center of the hole 18a and the distance L04 from the center of the hole 64a are the same in the longitudinal direction of the vehicle body.

The center pillar 260 is connected to the front pillar 222 and the rear pillar 252 at the connection position SP02. The front pillar 222 is an example of a first pillar portion, and the rear pillar 252 is an example of a second pillar portion.

Note that the "connection position" is a position where the pillar is connected at a portion facing the vehicle exterior space.

(Connection structure between front side pillar 222 and rear side pillar 252)
[Front side pillar 222]
As shown in FIGS. 9 and 10, the front pillar 222 is arranged on the passenger space 30b side with respect to the outer panel 272 and the outer panel 272, which constitutes a connecting portion 278 for connecting with the rear pillar 252. It has an inner panel 266 that is

The inner panel 266 extends in the vertical direction of the vehicle body. The inner panel 266 is formed with a general portion 280 whose plate surface faces the vehicle width direction and faces the passenger space 30b. The inner panel 266 is formed by bending a sheet metal, and in a cross section orthogonal to the longitudinal direction of the inner panel 266, a portion on the rear side of the vehicle body with respect to the general portion 280 has a stepped shape. Specifically, the inner panel 266 has a first stepped portion 282 and a second stepped portion arranged outside in the width direction of the vehicle body (opposite to the passenger space 30b side) with respect to the general portion 280 of the inner panel 266. 284 are formed. Furthermore, a connecting portion 286 that connects the first stepped portion 282 and the second stepped portion 284 is formed. The plate surface of the first stepped portion 282 and the plate surface of the second stepped portion 284 face the width direction of the vehicle body, and the plate surface of the connection portion 286 faces the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 280 and the first step portion 282 is smaller than the step amount between the first step portion 282 and the second step portion 284 .

The outer panel 272 extends in the vertical direction of the vehicle body. A cross section perpendicular to the longitudinal direction of the outer panel 272 has a crank shape. A base portion 274 is formed on the outer panel 272 along the second stepped portion 284 outside the second stepped portion 284 of the inner panel 266 in the vehicle width direction. Specifically, the rear end portion of the base portion 274 extends along the second stepped portion 284 . Also, the rear edge of the base portion 274 and the rear edge of the second stepped portion 284 overlap in the width direction of the vehicle body.

Further, in the outer panel 272, a step portion is formed on the front side of the base portion 274 via a step with the base portion 274, and extends along the general portion 280 outside the general portion 280 of the inner panel 266 in the vehicle width direction. 276 is formed. Further, the front edge of the stepped portion 276 and the front edge of the general portion 280 overlap in the width direction of the vehicle body. The general portion 280 of the inner panel 266 and the stepped portion 276 of the outer panel 272 are joined by welding, and the second stepped portion 284 of the inner panel 266 and the base portion 274 of the outer panel 272 are joined by a sheet metal adhesive. are joined using

[Rear side pillar 252]
As shown in FIGS. 9 and 10, the rear pillar 252 is arranged on the side of the passenger space 30b with respect to the outer panel 244, which constitutes a connecting portion 278 for connecting with the front pillar 222, and the outer panel 244. It has an inner panel 240 that has an inner panel 240 . The inner panel 240 has a plate surface facing the width direction of the vehicle body and extending in the vertical direction of the vehicle body.

The outer panel 244 extends in the vertical direction of the vehicle body. Further, the outer panel 244 is formed by bending a sheet metal, and a cross section perpendicular to the longitudinal direction of the outer panel 244 has a hat shape with an opening on the inner panel 240 side. A pair of flange portions 244a and 244b are formed on the outer panel 244 along the inner panel. The flange portion 244a and the flange portion 244b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the front side to the rear side. The front edge of the flange portion 244a and the front edge of the inner panel 240 overlap in the vehicle width direction, and the rear edge of the flange portion 244b and the rear edge of the inner panel 240 overlap in the vehicle width direction. overlapping.

Further, the outer panel 244 is formed with a bottom portion 246 between the flange portions 244a and 244b in the longitudinal direction of the vehicle body via a step between the flange portions 244a and 244b. A cross section perpendicular to the longitudinal direction of the bottom portion 246 is crank-shaped, and the bottom portion 246 is formed with a first stepped portion 246a and a second stepped portion 246b whose plate surfaces face the width direction of the vehicle body. The first stepped portion 246a and the second stepped portion 246b are arranged in this order from the front side to the rear side. It is arranged on the passenger space 30b side).

Further, the outer panel 244 is formed with a connection portion 248 that connects the flange portion 244a and the first stepped portion 246a. A plate surface of the connection portion 248 faces the front-rear direction of the vehicle body.

The inner panel 240 and the flange portion 244a of the outer panel 244 are joined by welding, and the inner panel 240 and the flange portion 244b of the outer panel 244 are joined by welding.

In this configuration, when the module 212a and the module 212b are connected by the connecting portion 278, the first stepped portion 282 of the front pillar 222 overlaps the flange portion 244a of the rear pillar 252 from the outside in the vehicle width direction. in contact. The second stepped portion 284 of the front pillar 222 overlaps and contacts the first stepped portion 246a of the rear pillar 252 from the outside in the width direction of the vehicle body. Also, the connecting portion 248 of the rear pillar 252 and the connecting portion 286 of the front pillar 222 face each other in the longitudinal direction of the vehicle body.

The rear edge of the front pillar 222 is joined to the rear pillar 252 by laser welding, and the front edge of the rear pillar 252 is joined to the front pillar 222 by laser welding. and the rear pillar 252 are connected.

Here, when the vehicle turns and travels, from the viewpoint of suppressing separation (details will be described later) of the module 212a and the module 212b at the connecting portion 278, the connecting portion 278 has a vertical length of the pillar. is 100, preferably 60 or more, more preferably 80 or more, and particularly preferably 90 or more.

(Action of vehicle body structure 210)
When a vehicle (not shown) equipped with a vehicle body 200 that employs the vehicle body structure 210 turns, the center pillar 260 on the side away from the turning center has a center pillar 260 on the inside of the suspension tower 18 in the vehicle width direction via the front tires. The load that pulls in is transmitted. Regarding this load, the load transmitted to the front pillar 222 is often greater than the load transmitted to the rear pillar 252 arranged behind the front pillar 222 .

As a result, when a load is transmitted from the suspension tower 18 to the center pillar 260 via the front tires, the front pillar 222 moves inward in the vehicle width direction (passenger space) with respect to the rear pillar 252 . 30b side). When the front pillar 222 moves inward in the vehicle width direction, the first stepped portion 282 of the front pillar 222 pushes the flange portion 244a of the rear pillar 252 inward in the vehicle width direction. Further, the second stepped portion 284 of the front pillar 222 pushes the first stepped portion 246a of the rear pillar 252 inward in the vehicle width direction.

(summary)
As described above, in the vehicle body structure 210, when a load pushing the center pillar 260 inward in the vehicle width direction is transmitted from the suspension tower 18 via the front tire, the first stepped portion 282 of the front pillar 222 moves to the rear side. The flange portion 244a of the pillar 252 is pushed inward in the vehicle body width direction. As a result, it is possible to prevent the front pillar 222 of the module 212a and the rear pillar 252 of the module 212b from separating from each other due to the load transmitted by turning.

In the vehicle body structure 210 , when a load pushing the center pillar 260 inward in the vehicle width direction is transmitted from the suspension tower 18 via the front tire, the second stepped portion 284 of the front pillar 222 moves to the second step of the rear pillar 252 . The stepped portion 246a is pushed inward in the width direction of the vehicle body. As a result, it is possible to prevent the front pillar 222 of the module 212a and the rear pillar 252 of the module 212b from separating from each other due to the load transmitted by turning.

In the vehicle body structure 210, the connecting portion 248 of the rear pillar 252 and the connecting portion 286 of the front pillar 222 face each other in the longitudinal direction of the vehicle body. Therefore, it is possible to suppress rearward movement of the rear end portion of the module 212a relative to the front end portion of the module 212b at the connecting portion 278 in the event of a frontal collision.

Other actions are the same as those of the first embodiment.

<Third Embodiment>
An example of a vehicle body 300 employing the vehicle body structure 310 according to the third embodiment of the invention will be described with reference to FIGS. 13 to 17. FIG. In addition, about 3rd Embodiment, a different part from 1st Embodiment is mainly demonstrated.

As shown in FIGS. 16 and 17, the vehicle body 300 is connected to two modules 312a and 312b in the longitudinal direction of the vehicle body. Lined up. Module 312a is an example of a first module, and module 312b is an example of a second module.

(Connecting position SP03 between module 312a and module 312b)
16 and 17, the module 312a and the module 312b are connected in front of the rear pillar 62 and behind the center pillar 60 in the longitudinal direction of the vehicle body. Specifically, the module 312a and the module 312b are connected in a rear region close to the portion to which the load is transmitted from the rear tire with respect to the portion to which the load is transmitted from the front tire.

That is, the connecting position SP03 between the modules 312a and 312b is closer to the center of the circular hole 64a formed in the suspension tower 64 than the center of the circular hole 18a formed in the suspension tower 18 in the longitudinal direction of the vehicle body. This is the posterior area. Specifically, in the longitudinal direction of the vehicle body, the distance L06 between the connecting position SP03 and the center of the hole 64a is shorter than the distance L05 between the connecting position SP03 and the center of the hole 18a.

That is, the "rear area" is an area that is close to the center of the circular hole 64a formed in the suspension tower 64 with respect to the center of the circular hole 18a formed in the suspension tower 18 in the longitudinal direction of the vehicle body.

As shown in FIG. 13A, the roof 32 is connected to the front roof 352 and the rear roof 322 by connecting portions 378, and the floor 36 is connected to the front roof 352 and the rear roof 322 as shown in FIG. In addition, it is connected to the front side floor 356 and the rear side floor 326 by a connecting portion 388 .

(Connection structure between front roof 352 and rear roof 322)
[Front side roof 352]
As shown in FIGS. 13A and 14, the front roof 352 has a roof panel 340 and a reinforcement 344 forming a connecting portion 378 for connecting with the rear roof 322. As shown in FIG. The rear end portion of the roof panel 340 constitutes a connecting portion 378, and the rear end portion of the roof panel 340 is not formed with an uneven shape. The front roof 352 is an example of a first roof portion.

The reinforcement 344 is formed by bending a sheet metal, is arranged at the rear end portion of the roof panel 340 and on the side of the passenger space 30b with respect to the rear end portion of the roof panel 340, and extends in the vehicle width direction. there is Furthermore, the cross section perpendicular to the longitudinal direction of the reinforcement 344 has a hat shape with an upper opening. A pair of flange portions 344 a and 344 b extending along the roof panel 340 below the roof panel 340 are formed on the reinforcement 344 . The flange portion 344a and the flange portion 344b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the rear side to the front side. Also, the rear edge of the flange portion 344a and the rear edge of the roof panel 340 overlap in the vertical direction.

Further, the reinforcement 344 is formed with a bottom portion 346 between the flange portions 344a and 344b in the longitudinal direction of the vehicle body via a step between the flange portions 344a and 344b. A cross section orthogonal to the longitudinal direction of the bottom portion 346 is crank-shaped, and the bottom portion 346 is formed with a first stepped portion 346a and a second stepped portion 346b whose plate surfaces face the vertical direction. The first stepped portion 346a and the second stepped portion 346b are arranged in this order from the rear side to the front side, and the first stepped portion 346a is arranged above the second stepped portion 346b. .

Further, the reinforcement 344 is formed with a connecting portion 348 that connects the flange portion 344a and the first stepped portion 346a. A plate surface of the connection portion 348 faces the front-rear direction of the vehicle body.

The roof panel 340 and the flange portion 344a of the reinforcement 344 are joined using a sheet metal adhesive, and the roof panel 340 and the flange portion 344b of the reinforcement 344 are joined using a sheet metal adhesive.

[Rear side roof 322]
As shown in FIGS. 13A and 14, the rear roof 322 has a roof panel 366 and a reinforcement 372 forming a connecting portion 378 for connecting with the front roof 352. As shown in FIG. The rear roof 322 is an example of a second roof portion.

A front end portion of the roof panel 366 constitutes a connecting portion 378, and the front end portion of the roof panel 366 is stepped. Specifically, at the front end portion of the roof panel 366, a first stepped portion 382 and a second stepped portion 384 are arranged below the general portion 380 (the portion facing the vehicle exterior space) of the roof panel 366. is formed. Furthermore, a connecting portion 386 is formed to connect the first stepped portion 382 and the second stepped portion 384 . The plate surface of the first stepped portion 382 and the plate surface of the second stepped portion 384 are oriented in the vertical direction of the vehicle body, and the plate surface of the connecting portion 386 is oriented in the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 380 and the first step portion 382 is smaller than the step amount between the first step portion 382 and the second step portion 384 .

The reinforcement 372 is formed by bending a sheet metal, is arranged at the front end portion of the roof panel 366 and on the side of the passenger space 30b with respect to the front end portion of the roof panel 366, and extends in the width direction of the vehicle body. Further, a cross section perpendicular to the longitudinal direction of the reinforcement 372 has a crank shape.

A base portion 374 is formed on the reinforcement 372 along the second stepped portion 384 below the second stepped portion 384 of the roof panel 366 . Specifically, the front end portion of the base portion 374 runs along the second stepped portion 384 . Also, the front edge of the base portion 374 and the front edge of the second stepped portion 384 overlap in the vertical direction. Further, in the reinforcement 372, a stepped portion 376 is formed on the rear side with respect to the base portion 374 via a step with the base portion 374 and extends along the general portion 380 below the general portion 380 of the roof panel 366. there is

The general portion 380 of the roof panel 366 and the stepped portion 376 of the reinforcement 372 are joined using a sheet metal adhesive, and the second stepped portion 384 of the roof panel 366 and the base portion 374 of the reinforcement 372 are joined by welding. ing.

In this configuration, when the module 312a and the module 312b are connected by the connecting portion 378, the flange portion 344a of the front roof 352 overlaps and contacts the first stepped portion 382 of the rear roof 322 from above. there is Further, the first stepped portion 346a of the front roof 352 overlaps and contacts the second stepped portion 384 of the rear roof 322 from above. Also, the connecting portion 386 of the rear roof 322 and the connecting portion 348 of the front roof 352 face each other in the longitudinal direction of the vehicle body.

The rear edge of the front roof 352 is joined to the rear roof 322 by laser welding, and the front edge of the rear roof 322 is joined to the front roof 352 by laser welding. and the rear side roof 322 are connected.

Here, from the viewpoint of suppressing separation (details will be described later) of the module 312a and the module 312b at the connecting portion 378 when the vehicle runs on an uneven road surface, for example, the connecting portion 378 has a roof. Assuming that the length in the width direction is 100, it is preferable to provide 60 or more, more preferably 80 or more, and particularly preferably 90 or more.

Regarding the connection between the front side roof rail 368 and the rear side roof rail 342, it is inserted into the end portion of the front side roof rail 368 and the rear side roof rail 342 to support each member from the inner peripheral side. A shaped insert 540 (see FIG. 14) may be used for connection.

(Connection structure between front side floor 356 and rear side floor 326)
[Front side floor 356]
As shown in FIGS. 13B and 15, the front floor 356 has a floor panel 308 and a reinforcement 314 forming a connecting portion 388 for connecting with the rear floor 326. As shown in FIG. The rear end portion of the floor panel 308 constitutes a connecting portion 388, and the rear end portion of the floor panel 308 is not formed with an uneven shape. The front floor 356 is an example of a first floor section.

The reinforcement 314 is formed by bending sheet metal, is arranged at the rear end portion of the floor panel 308 and below the rear end portion of the floor panel 308, and extends in the width direction of the vehicle body. Furthermore, the cross section perpendicular to the longitudinal direction of the reinforcement 314 has a hat shape with an upper opening. A pair of flange portions 314 a and 314 b extending along the floor panel 308 below the floor panel 308 are formed on the reinforcement 314 . The flange portion 314a and the flange portion 314b are spaced apart in the longitudinal direction of the vehicle body and arranged in this order from the rear side to the front side. Further, the rear edge of the flange portion 314a and the rear edge of the floor panel 308 overlap vertically.

Further, in the reinforcement 314, a bottom portion 316 is formed between the flange portions 314a and 314b in the longitudinal direction of the vehicle body via a step between the flange portions 314a and 314b. A cross section perpendicular to the longitudinal direction of the bottom portion 316 is crank-shaped, and the bottom portion 316 is formed with a first stepped portion 316a and a second stepped portion 316b whose plate surfaces face the vertical direction. The first stepped portion 316a and the second stepped portion 316b are arranged in this order from the rear side to the front side, and the first stepped portion 316a is arranged above the second stepped portion 316b. .

Further, the reinforcement 314 is formed with a connecting portion 318 that connects the flange portion 314a and the first stepped portion 316a. A plate surface of the connecting portion 318 faces the longitudinal direction of the vehicle body.

The floor panel 308 and the flange portion 314a of the reinforcement 314 are joined by welding, and the floor panel 308 and the flange portion 314b of the reinforcement 314 are joined by welding.

[Rear side floor 326]
As shown in FIGS. 13B and 15, the rear floor 326 has a floor panel 398 and a reinforcement 402 forming a connecting portion 388 for connecting with the front floor 356. As shown in FIG. The rear floor 326 is an example of a second floor section.

A front end portion of the floor panel 398 constitutes a connecting portion 388, and the front end portion of the floor panel 398 is stepped. Specifically, the front end portion of the floor panel 398 has a first stepped portion 392 and a second stepped portion 394 arranged below the general portion 390 of the floor panel 398 (the portion facing the passenger space 30b). and are formed. Furthermore, a connecting portion 396 is formed to connect the first stepped portion 392 and the second stepped portion 394 . The plate surface of the first stepped portion 392 and the plate surface of the second stepped portion 394 are oriented in the vertical direction of the vehicle body, and the plate surface of the connecting portion 396 is oriented in the longitudinal direction of the vehicle body. Furthermore, the step amount between the general portion 390 and the first step portion 392 is smaller than the step amount between the first step portion 392 and the second step portion 394 .

The reinforcement 402 is formed by bending a sheet metal, is arranged at the front end portion of the floor panel 398 and below the front end portion of the floor panel 398, and extends in the width direction of the vehicle body. Further, a cross section perpendicular to the longitudinal direction of the reinforcement 402 has a crank shape.

The reinforcement 402 is formed with a base portion 404 extending along the second stepped portion 394 below the second stepped portion 394 of the floor panel 398 . Specifically, the front end portion of the base portion 404 runs along the second stepped portion 394 . Also, the front edge of the base portion 404 and the front edge of the second stepped portion 394 overlap in the vertical direction. Further, the reinforcement 402 has a stepped portion 406 formed on the rear side of the base portion 404 via a step with the base portion 404 and extending along the general portion 390 below the general portion 390 of the floor panel 398 . there is

The general portion 390 of the floor panel 398 and the stepped portion 406 of the reinforcement 402 are welded together, and the second stepped portion 394 of the floor panel 398 and the base portion 404 of the reinforcement 402 are welded together.

In this configuration, when the module 312a and the module 312b are connected by the connecting portion 388, the flange portion 314a of the front floor 356 overlaps and contacts the first step portion 392 of the rear floor 326 from above. there is Further, the first stepped portion 316a of the front floor 356 overlaps and contacts the second stepped portion 394 of the rear floor 326 from above. Also, the connecting portion 396 of the rear floor 326 and the connecting portion 318 of the front floor 356 face each other in the longitudinal direction of the vehicle body.

The front edge of the rear floor 326 is joined to the front floor 356 by laser welding, and the rear edge of the front floor 356 is joined to the rear floor 326 by laser welding. and the rear floor 326 are connected.

Here, from the viewpoint of suppressing separation (details will be described later) of the module 312a and the module 312b at the connecting portion 388 when the vehicle runs on an uneven road surface, for example, the connecting portion 388 is provided with a floor member. Assuming that the length of the floor in the width direction of the vehicle body excluding the portion where it is arranged is 100, it is preferable to provide 60 or more, more preferably 80 or more, and particularly preferably 90 or more.

Regarding the connection between the front side rocker 324 and the rear side rocker 354, it is inserted into the end portion of the front side rocker 324 and the end portion of the rear side rocker 354, and a cylinder supporting each member from the inner peripheral surface side is inserted. A shaped insert 550 (see FIG. 15) may be used for connection.

As for the connection between the front side floor member 28 and the rear side floor member 58, the end portions of the front side floor member 28 and the rear side floor member 58 are inserted into the respective members from the inner peripheral surface side. may be connected using a tubular insert 560 (see FIG. 15) that supports the .

[Action of vehicle body structure 310]
When a vehicle (not shown) equipped with a vehicle body 300 employing the vehicle body structure 310 runs, for example, on an uneven road surface, a load pushing up the vehicle body 300 is transmitted to the vehicle body 300 via the tires. Specifically, the load from the front tires is transmitted to the vehicle body 300 from the suspension tower 18 on the front side of the vehicle body, and the load from the rear tires is transmitted to the vehicle body 300 from the suspension tower 64 on the rear side of the vehicle body.

Here, the connection position SP03 of the vehicle body structure 310 is located rearwardly close to the center of the circular hole 64a formed in the suspension tower 64 with respect to the center of the circular hole 18a formed in the suspension tower 18 in the longitudinal direction of the vehicle body. area. Therefore, in the connecting portions 378, 388 of the vehicle body structure 310, the load transmitted from the rear tires to the connecting portions 378, 388 is often larger than the load transmitted to the connecting portions 378, 388 from the front tires.

Therefore, at the connecting portions 378 and 388 of the vehicle body structure 310, the rear roof 322 and the rear floor 326 move upward. When the rear side roof 322 moves upward, the first stepped portion 382 of the rear side roof 322 moves to the flange portion of the front side roof 352 at the connecting portion 378 of the vehicle body structure 310 as shown in FIG. 13(A). Push up 344a. Furthermore, the second stepped portion 384 of the rear roof 322 pushes up the first stepped portion 346a of the front roof 352 .

Further, when the rear floor 326 moves upward, the first stepped portion 392 of the rear floor 326 moves to the flange of the front floor 356 at the connecting portion 388 of the vehicle body structure 310 as shown in FIG. 13(B). Push up the portion 314a. Furthermore, the second stepped portion 394 of the rear side floor 326 pushes up the first stepped portion 316a of the front side floor 356 .

(summary)
As described above, in the vehicle body structure 310 , when a load pushing up the vehicle body 300 is transmitted from the suspension tower 64 to the vehicle body 300 via the rear tires, the first stepped portion 382 of the rear roof 322 moves to the flange portion of the front roof 352 . Push up 344a. As a result, the front roof 352 of the module 312a and the rear roof 322 of the module 312b can be prevented from being separated at the connecting portion 378 due to the load transmitted from the rear tires.

In the vehicle body structure 310, when a load pushing up the vehicle body 300 is transmitted from the suspension tower 64 to the vehicle body 300 via the rear tires, the second stepped portion 384 of the rear roof 322 pushes the first stepped portion 346a of the front roof 352. push up. As a result, the front roof 352 of the module 312a and the rear roof 322 of the module 312b can be prevented from being separated at the connecting portion 378 due to the load transmitted from the rear tires.

In the vehicle body structure 310 , when a load pushing up the vehicle body 300 is transmitted from the suspension tower 64 to the vehicle body 300 via the rear tires, the first stepped portion 392 of the rear floor 326 pushes up the flange portion 314 a of the front floor 356 . As a result, the front floor 356 of the module 312a and the rear floor 326 of the module 312b can be prevented from being separated at the connecting portion 388 due to the load transmitted from the rear tires.

Further, in the vehicle body structure 310, when a load pushing up the vehicle body 300 is transmitted from the suspension tower 64 to the vehicle body 300 via the rear tires, the second stepped portion 394 of the rear floor 326 pushes the first stepped portion 316a of the front floor 356. push up. As a result, the front floor 356 of the module 312a and the rear floor 326 of the module 312b can be prevented from being separated at the connecting portion 388 due to the load transmitted from the rear tires.

In the vehicle body structure 310, the connecting portion 386 of the rear roof 322 and the connecting portion 348 of the front roof 352 face each other in the longitudinal direction of the vehicle body. Therefore, it is possible to suppress rearward movement of the rear end portion of the module 312a relative to the front end portion of the module 312b at the connecting portion 378 in the event of a frontal collision.

In the vehicle body structure 310, the connecting portion 396 of the rear floor 326 and the connecting portion 318 of the front floor 356 face each other in the longitudinal direction of the vehicle body. Therefore, it is possible to suppress rearward movement of the rear end portion of the module 312a relative to the front end portion of the module 312b at the connecting portion 388 in the event of a frontal collision.

Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to those skilled in the art. For example, in the above embodiment, two vehicle bodies are connected, but three or more vehicle bodies may be connected.

In addition, in the first and second embodiments, portions of the rear modules 12b and 212b of the connecting portions 78 and 88 overlap the front modules 12a and 212a from above in the longitudinal direction of the vehicle body. , two locations, but may be three or more locations, or may be one location as shown in FIGS. However, if there is only one position, the effect caused by multiple positions does not occur.

Further, in the third embodiment, there are two portions where the front module 312a partially overlaps the rear module 312b from above in the longitudinal direction of the vehicle body at the connecting portions 378 and 388. However, it may be at three or more locations, or at one location. However, if there is only one position, the effect caused by multiple positions does not occur.

In addition, in the second embodiment, there are two portions where the front module 212a partially overlaps the rear module 212b in the vehicle longitudinal direction from the outside in the vehicle width direction at the connecting portion 278. However, it may be three or more, or one. However, if there is only one position, the effect caused by multiple positions does not occur.

Further, in the above-described second embodiment, the center pillar 260 is connected at the intermediate position, but it may be connected at the front region or the rear region. The center pillar 260 may have the same configuration regardless of where it is connected.

Further, in the above embodiment, the modules 12a, 212a, 312a and the modules 12b, 212b, 312b are connected by laser welding at the connecting portions 78, 88, 278, 378, 388, but FIG. As shown in B), a latching mechanism may be used to connect each module. In this case, coupling and uncoupling are easier for welding.

Also, in the above embodiment, although no particular explanation was given, the area where the roof is connected and the area where the floor is connected are the same, but they may be different. For example, the roof may be connected in the front area and the floor in the direction area.

Also, in the above embodiment, one center pillar is provided on one side, but a plurality of center pillars may be provided on one side.

10 vehicle body structure 12a module (an example of the first module)
12b module (an example of a second module)
22 Front side roof (an example of the first roof part)
26 Front side floor (an example of the first floor part)
52 Rear side roof (an example of the second roof part)
56 Rear side floor (an example of the second floor part)
78 connecting portion 88 connecting portion 100 vehicle body 200 vehicle body 210 vehicle body structure 212a module (an example of a first module)
212b module (an example of a second module)
222 front side pillar (an example of the first pillar part)
252 rear side pillar (an example of the second pillar part)
278 connecting portion 300 vehicle body 310 vehicle body structure 312a module (an example of a first module)
312b module (an example of a second module)
322 Rear side roof (an example of the second roof part)
326 rear side floor (an example of the second floor section)
352 Front roof (an example of the first roof part)
356 front side floor (an example of the first floor section)
378 connecting portion 388 connecting portion SP01 connecting position SP02 connecting position SP03 connecting position

Claims (6)

a first module that constitutes a part of the vehicle body in the front-rear direction and has a first roof portion arranged between a pair of front roof rails ;
a second module disposed rearwardly of the first module, constituting another part of the vehicle body in the front-rear direction, and having a second roof portion disposed between a pair of rear roof rails ;
A front region close to a portion where a load is input from the front tires relative to a portion where the load is input from the rear tires, or an intermediate portion between the portion where the load is input from the rear tires and the portion where the load is input from the front tires. a connecting portion connecting the first roof portion and the second roof portion at a position such that at least a portion of the second roof portion overlaps the first roof portion from above in the longitudinal direction of the vehicle body;
It is inserted into the end portion of the front side roof rail and the end portion of the rear side roof rail, and has a cylindrical shape that supports each member from the inner peripheral surface side and connects the front side roof rail and the rear side roof rail. an insert member;
A car body structure with a first module that constitutes a part of the vehicle body in the front-rear direction and has a first roof portion arranged between a pair of front roof rails ;
a second module disposed rearwardly of the first module, constituting another part of the vehicle body in the front-rear direction, and having a second roof portion disposed between a pair of rear roof rails ;
The first roof portion and the second roof portion are connected in a rear region adjacent to the portion to which the load is input from the rear tires with respect to the portion to which the load is input from the front tires, and at least the first roof portion a connecting portion partially overlapping the second roof portion from above in the longitudinal direction of the vehicle body;
It is inserted into the end portion of the front side roof rail and the end portion of the rear side roof rail, and has a cylindrical shape that supports each member from the inner peripheral surface side and connects the front side roof rail and the rear side roof rail. an insert member;
A car body structure with Regarding the connecting part, if the length of the roof in the vehicle width direction is 100, 60 or more are provided.
The vehicle body structure according to claim 1 or 2. a first module that constitutes a part of the vehicle body in the front-rear direction and has a first floor portion disposed between the pair of front rockers ;
a second module disposed rearwardly of the first module, constituting another part of the vehicle body in the front-rear direction, and having a second floor portion disposed between a pair of rear rockers ;
A front region close to a portion where a load is input from the front tires relative to a portion where the load is input from the rear tires, or an intermediate portion between the portion where the load is input from the rear tires and the portion where the load is input from the front tires. a connecting portion connecting the first floor portion and the second floor portion at a position such that at least a portion of the second floor portion overlaps the first floor portion from above in the longitudinal direction of the vehicle body;
It is inserted into the end portion of the front side locker and the end portion of the rear side locker, and has a cylindrical shape that supports the respective members from the inner peripheral surface side, and connects the front side locker and the rear side locker. an insert member;
A car body structure with a first module that constitutes a part of the vehicle body in the front-rear direction and has a first floor portion disposed between the pair of front rockers ;
a second module disposed rearwardly of the first module, constituting another part of the vehicle body in the front-rear direction, and having a second floor portion disposed between a pair of rear rockers ;
The first floor portion and the second floor portion are connected in a rear region adjacent to the portion to which the load is input from the rear tires with respect to the portion to which the load is input from the front tires, and at least the first floor portion a connecting portion partially overlapping the second floor portion from above in the longitudinal direction of the vehicle body;
It is inserted into the end portion of the front side locker and the end portion of the rear side locker, and has a cylindrical shape that supports the respective members from the inner peripheral surface side, and connects the front side locker and the rear side locker. an insert member;
A car body structure with With respect to the connecting portion, if the length of the floor in the vehicle width direction is 100, 60 or more are provided.
The vehicle body structure according to claim 4 or 5.

Images