JP3206424B2 - Car body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure, and more particularly to a vehicle body structure connecting a rocker and a front end of a rear floor side member.

[0002]

2. Description of the Related Art Conventionally, as an example of a vehicle body structure in which a rocker and a front end of a rear floor side member are connected, a structure disclosed in Japanese Utility Model Laid-Open Publication No. 60-51183 is known.

As shown in FIG. 5, in this vehicle body structure, a vertical wall portion 7 on the inner side in the vehicle width direction of a rear floor side member 70 whose upper end is connected to a lower side of a rear floor panel.
The front end 70B of the rocker inner panel 72 is connected to an inner side surface 72A in the vehicle width direction of a rocker (also referred to as a side sill) inner panel 72, and upper and lower ends are connected to upper and lower ends of a rocker outer panel 74 in the vehicle width direction. The upper and lower ends of the reinforce 76 having a groove-shaped cross section are joined to the upper end 72B along the rocker inner panel 72, and the rear end 76B of the vertical wall portion 76A of the reinforce 76 is connected to the rocker inner panel 72.
And is connected to the vehicle width direction outer side surface 72B of the rocker inner panel 72 so as to face the front end 70B of the vertical wall portion 70A of the rear floor side member 70 with the.

[0004]

However, in the vehicle body structure of this automobile, a closed cross section 80 composed of a rear floor panel and a rear floor side member 70 and a closed cross section composed of a rocker inner panel 72 and a reinforcement 76 are provided. The connecting portion with the portion 82 is offset in the vehicle front-rear direction. Accordingly, since the rigidity at the joint between the closed cross-section 80 and the closed cross-section 82 is low, the torsional rigidity around the longitudinal axis of the vehicle is also low.

The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle body structure of an automobile capable of improving the torsional rigidity around the longitudinal axis of the vehicle.

[0006]

According to a first aspect of the present invention, there is provided a rocker having a rocker closed cross-section extending in the vehicle front-rear direction, and a rocker disposed in the rocker closed cross-section along the vehicle front-rear direction. A reinforcing member forming a reinforcing closed cross-section extending in the vehicle front-rear direction with the vehicle width direction inner portion, and a rear floor side member closed cross-section coupled to the vehicle width direction inner rear end of the rocker and extending substantially in the vehicle front-rear direction. and the rear floor side member that forms, in the vehicle structure of the vehicle equipped with, Hui the rear end of the vehicle width direction outer side wall portion of the reinforcement closed-section portion
At the front end of the inner house panel
The inner wall is interposed and the rear floor
Lock the front end of the inner side wall in the vehicle width direction
It is characterized in that it is connected to the inner wall of the vehicle in the vehicle width direction .

Accordingly, the rocker inner panel and the reinforcing member
The joint surface of the reinforced closed cross section formed by the
Formed by door members and wheel house inner panels
The connection surface of the closed section of the rear floor side member is
Reinforced closed section and rear overlap with the inner wall in the vehicle width direction
The closed section of the floor side member and the closed section of the floor side member form a continuous closed section.

[0008]

[0009]

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a vehicle body structure of an automobile according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a vehicle forward direction, an arrow UP indicates a vehicle upward direction, and an arrow IN indicates a vehicle width inside direction.

As shown in FIG. 2, the vehicle body 1 of the present embodiment
At 0, a pair of left and right rockers 12 is disposed along the vehicle front-rear direction at both ends in the vehicle width direction below the vehicle compartment (the rocker on the left side of the vehicle is not shown).

As shown in FIG. 3, the rocker 12 is composed of a rocker outer panel 14 that forms an outer portion of the rocker 12 in the vehicle width direction, and a rocker inner panel 16 that forms an inner portion of the rocker 12 in the vehicle width direction. I have. The cross-sectional shape of the rocker outer panel 14 as viewed from the front of the vehicle has a substantially U-shaped cross-section with an opening directed inward in the vehicle width direction, and an upper flange 14A and a lower flange 14B are formed at the opening ends. . The cross-sectional shape of the rocker inner panel 16 as viewed from the front of the vehicle is substantially U-shaped in section with the opening directed outward in the vehicle width direction.
The upper flange 16A and the lower flange 16B are formed at the opening end.

Upper flange 14 of rocker outer panel 14
A and the lower flange 14B are respectively connected to the upper flange 16A and the lower flange 16B of the rocker inner panel 16 by spot welding, and the rocker 12 has a rocker closed cross-section 18 extending in the vehicle longitudinal direction.

In the closed section 18 of the rocker, a rocker reinforcement 20 is arranged along the longitudinal direction of the vehicle body.
The cross-sectional shape of the rock reinforce 20 as viewed from the front of the vehicle has a substantially U-shaped cross-section with an opening directed inward in the vehicle width direction.
0B is formed. The upper flange 20A of the rocker reinforcement 20 includes an upper flange 14A of the rocker outer panel 14 and an upper flange 16A of the rocker inner panel 16.
The lower flange 20B of the rocker reinforcement 20 is connected to the lower flange 14B of the rocker outer panel 14 and the lower flange 16B of the rocker inner panel 16 by spot welding. Therefore, Rockali Force 20
And the rocker inner panel 16 form a reinforcing closed cross section 22 extending in the vehicle longitudinal direction.

As shown in FIG. 2, the rear part 1 of the rocker 12 is provided.
On the inner side in the vehicle width direction of the 2A and the wheel house inner panel 28, a rear floor side member 30 is disposed substantially along the vehicle front-rear direction.

As shown in FIG. 4, a contact portion 3 of the rear floor side member 30 with the wheel house inner panel 28 is provided.
At 0A, the cross-sectional shape as viewed from the front of the vehicle has a U-shaped cross-section with an opening facing outward in the vehicle width direction, and an upper flange 30B and a lower flange 30C are formed at the opening ends. These flanges 30B and 30C are connected to the wheel house inner panel 28 by spot welding.

As shown in FIG. 2, a front portion 30D of the rear floor side member 30 is connected to a rear end of the rocker 12 in the vehicle width direction.

As shown in FIG. 3, at the front portion 30D of the rear floor side member 30, the cross-sectional shape as viewed from the front of the vehicle has a U-shaped cross-section with an opening directed outward in the vehicle width direction. The wall 30E is located on the upper wall 16C of the rocker inner panel 16, and the lower wall 30F is located on the rocker inner panel 1.
6 is connected to the lower wall portion 16D by spot welding.

As shown in FIG. 1, the front end 30H of the inner side wall 30G of the rear floor side member 30 in the vehicle width direction is
The inner side wall 16E of the rocker inner panel 16 in the vehicle width direction is connected by spot welding. The rear portion of the outer wall portion 20C in the vehicle width direction of the rocker reinforcement 20 is bent rearward in the vehicle width direction, and the rear end portion 20D of the outer wall portion 20C in the vehicle width direction is formed in the vehicle width of the rocker inner panel 16. They are joined by spot welding to the front end 28 a of the wheel house inner panel 28 across the direction in the side wall portion 16E.

Therefore, the rear floor side member 30 is composed of the rocker inner panel 16 and the wheel house inner panel 2.
8 form a rear floor side member closed cross-section 32 extending substantially in the vehicle longitudinal direction. The rear floor side member closed cross-section 32 and the reinforcing closed cross-section 22 are joined together with the rocker inner panel 16 interposed therebetween. 32A and coupling end 22A
And are connected in an overlapping state.

As shown in FIG. 2, a center floor cross member 34 is provided between the front portions 30D of the left and right rear floor side members 30 (the left rear floor side member is not shown). The center floor cross member 34 includes a center floor cross member upper 36 and a center floor cross member lower 38, and forms a closed section 40 extending in the vehicle width direction. A rear floor panel 42 is provided behind the center floor cross member 34. Note that reference numeral 5 in FIG.
0 indicates a wheel house outer panel.

Next, the operation of the present embodiment will be described. In the present embodiment, as shown in FIG. 1, a connection end 22A of a reinforcing closed cross-section 22 formed by a rocker inner panel 16 and a rock reinforce 20, a rear floor side member 30, a rocker inner panel 16, and a wheel house inner panel. And the connecting end 32A of the rear floor side member closed cross section 32 formed by the rocker inner panel 16
, And the reinforcing closed cross-section 22 and the rear floor side member closed cross-section 32 are connected to secure a series of cross sections in the vehicle front-rear direction. And the torsional rigidity around the longitudinal axis of the vehicle is improved.

Further, since the rear end of the rocker reinforcement 20 in the front-rear direction of the vehicle is connected to the inner wall portion in the vehicle width direction of the closed section 32 of the rear floor side member, the load acting on the reinforcing closed section 22 can be reduced by reducing the stress concentration. It can be received by the entire side member closed cross section 32, and the strength in the vehicle front-rear direction is also improved.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, the cross-sectional shape of the rocker 12 and the cross-sectional shape of the rear floor side member 30 are not limited to the cross-sectional shape of the present embodiment, but may be other cross-sectional shapes.

[0026]

According to the first aspect of the present invention, there is provided a rocker having a rocker closed cross-section extending in the vehicle front-rear direction, and a rocker disposed in the rocker closed cross-section along the vehicle front-rear direction in the vehicle width direction inside. A reinforcing member forming a reinforcing closed cross-section extending in the vehicle front-rear direction with a rear floor side member coupled to a vehicle width direction inner rear end of the rocker and forming a rear floor side member closing cross-section extending substantially in the vehicle front-rear direction; in the vehicle body structure for an automobile having a vehicle width direction outer reinforcement closed-section portion
Insert the rear end of the side wall into the front end of the wheel house inner panel.
And the rear wall of the car
Front end of the inner side wall in the vehicle width direction of the closed cross section of the floor side member
Is connected to the inner wall portion of the rocker in the vehicle width direction, so that the torsional rigidity around the longitudinal axis of the vehicle can be improved and the strength in the vehicle longitudinal direction can be improved.

[0027]

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing a vehicle body structure of an automobile according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the vehicle body structure of the automobile according to the embodiment of the present invention, as viewed obliquely from the front inside the vehicle.

FIG. 3 is a sectional view taken along line 3-3 in FIG.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a plan sectional view showing a vehicle body structure according to a conventional embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Body 12 Rocker 16 Rocker inner panel 16E Vehicle width direction inner wall part of rocker inner panel 18 Locker closed cross section 20 Rocker reinforcement 20C Vehicle width direction outer wall part of rocker reinforcement 20D Rear end of vehicle width direction outer wall of rocker reinforcement Part 22 Reinforced closed cross-section part 28 Wheel house inner panel 30 Rear floor side member 30A Contact part of rear floor side member with wheel house inner panel 30D Front part of rear floor side member 30G Inner side wall part of rear floor side member in the vehicle width direction 30H Rear floor side Front end of inner wall portion in the vehicle width direction of member 32 Rear floor side member closed cross section

Claims (1)

(57) [Claims] 1. A reinforcement that extends in the vehicle front-rear direction with a rocker having a rocker closed cross-section that extends in the vehicle front-rear direction and an inner portion in the vehicle width direction of the rocker disposed in the rocker closed cross-section along the vehicle front-rear direction. A vehicle body comprising: a reinforcing member that forms a closed cross-section; and a rear floor side member that is coupled to a vehicle width direction inner rear end of the rocker and that forms a closed cross-section of a rear floor side member that extends substantially in the vehicle front-rear direction. In the above structure, the rear end of the reinforcing closed cross-section portion in the vehicle width direction outside wall is
The inside of the rocker in the vehicle width direction
While connecting the wall section, the rear floor side panel
The front end of the inner wall of the vehicle
A vehicle body structure, wherein the vehicle body structure is connected to an inner wall portion in a vehicle width direction .