JP2996031B2 - 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 in which a cross member is skewered into a rocker.

[0002]

2. Description of the Related Art Conventionally, in a vehicle body structure, there has been known a structure in which a cross member is skewered into a rocker to improve the strength of a joint portion between the rocker and the cross member. No.

As shown in FIG. 6, in the vehicle body structure of this vehicle, a cross-member 72 has a skewing at an end portion 72A of a cross member 72 in a rocker 70, whereby the rocker 70 and the cross member 72 are connected to each other. The strength of the joint is improved.

[0004]

However, the vehicle body structure of this automobile is characterized in that the cross member 72 has an end 7 in the vehicle width direction.
The outer surface 74A of the rocker outer 74 constituting the outer portion of the rocker 70 in the vehicle width direction is formed by connecting the flange 72B formed in
Welded to. For this reason, there is a problem that the outer surface 74A of the rocker outer 74, that is, the design surface is distorted, and the appearance quality is deteriorated.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a vehicle body structure of an automobile which can improve the strength of a joint between a rocker and a cross member without deteriorating the appearance quality of the rocker. .

[0006]

According to a first aspect of the present invention, there is provided a vehicle body structure for a vehicle, wherein the vehicle has a hat-shaped cross-sectional shape which is fixed inside a rocker and whose cross-sectional shape when viewed from the front-rear direction of the vehicle body is open inside the vehicle body. And a vehicle width direction end portion extends through a cross section of the rocker reinforcement through the vehicle width direction inner side of the rocker, and extends in a cross section of the rocker reinforcement.
And a cross member coupled to the side .

[0007]

In the vehicle body structure according to the first aspect of the present invention, the end of the cross member in the vehicle width direction penetrates the inner side of the rocker in the vehicle width direction and is skewered, and the end of the cross member in the vehicle width direction is formed. Are connected to a rock reinforce fixed inside the rocker. For this reason, the vehicle width direction outer end of the rocker, that is, the vehicle width direction end of the cross member is not connected to the design surface of the rocker, and the design quality of the rocker is not distorted and the appearance quality is deteriorated. Never.

Further, since the rock reinforce is fixed inside the rocker and has a hat-like shape whose cross section viewed from the front and rear of the vehicle body is open like the outside of the rocker in the vehicle width direction, the cross member vehicle width is reduced. Rocky at end of direction
The cross section of the inforce extends to the rocky reinforce
In this case, the strength of the connecting portion between the rocker and the cross member can be improved as in the case where the end of the cross member in the vehicle width direction is connected to the outer portion of the rocker in the vehicle width direction.

In the vehicle body structure according to the first aspect of the present invention, the end of the cross member in the vehicle width direction is welded to the rock reinforce, and then the rock reinforce is formed.
Since the outer member forming the outer portion of the rocker in the vehicle width direction and the inner member forming the inner portion of the rocker in the vehicle width direction can be welded, there is no need to provide a working hole for welding the cross member in the inner member. In addition, the coupling strength and rigidity are improved, and the steering stability is improved.

[0010]

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

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

As shown in FIG. 4, lower portions at both ends in the vehicle width direction of a vehicle body of a vehicle body 10 are rockers 12 extending in the vehicle front-rear direction. A front wheel house 13 is provided on the front side of the locker 12 in the vehicle longitudinal direction, and a front side member 14 is disposed inside the front wheel house 13 in the vehicle width direction. The front portion 14A of the front side member 14 extends in the vehicle front-rear direction to a position inside the rocker 12 in the vehicle width direction, and serves as a frame member of the front body 10A. The rear portion 14B of the front side member 14 is curved outward in the vehicle width direction, and the rear end portion 14C is
2A is coupled to the inner side in the vehicle width direction.

A rear wheel house 16 is provided behind the rocker 12 in the vehicle longitudinal direction, and a rear floor side member 18 is disposed inside the rear wheel house 16 in the vehicle width direction. This rear floor side member 1
The rear portion 18A extends in the vehicle front-rear direction to a position inside the rocker 12 in the vehicle width direction and has a rear body 10B.
Skeletal member. Further, a front portion 18B of the rear floor side member 18 is curved outward in the vehicle width direction, and a front end portion 18C is coupled to a vehicle width direction inside portion of the rear end 12B of the rocker 12.

As shown in FIG. 3, the rocker 12 is composed of a rocker outer panel 20 that forms an outer portion of the rocker 12 in the vehicle width direction, and a floor side member 22 that forms an inner portion of the rocker 12 in the vehicle width direction. I have. The rocker outer panel 20 has a hat-shaped cross-sectional shape when viewed from the vehicle front-rear direction, with the inside of the vehicle being open. A flange 20A is formed upward at an upper end edge of the opening, and is formed at a lower end edge of the opening. Has a flange 20B formed downward. The flange 2A provided at the upper end of the floor side member 22 is provided on the flange 20A of the rocker outer panel 20.
2A is welded. The lower end of the floor side member 22 is bent inward in the vehicle width direction to form a flange 22B, and the flange 22B is welded to the upper surface 24A of the floor pan 24. The end of the floor pan 24 in the vehicle width direction is bent downward to form a flange 24B, which is welded to the flange 20B of the rocker outer panel 20.

Accordingly, in the rocker 12, the rocker outer panel 20, the floor side member 22, and the floor pan 24 form a closed section 26 extending in the vehicle longitudinal direction.

As shown in FIG. 4, a rocker reinforcement 28 is provided in the closed section 26 of the rocker 12 so as to extend in the vehicle front-rear direction and to reach the front side member 14 and the rear floor side member 18 at both ends in the vehicle front-rear direction. ing.

As shown in FIG. 3, the cross-sectional shape of the rocker reinforcement 28 when viewed from the front-rear direction of the vehicle body is a hat shape with the inside of the vehicle body opened. 28A, and a flange 28B is formed on the lower edge of the opening toward the lower side in the vehicle vertical direction.
Are formed. The flange 28A of the rocker reinforcement 28 includes an upper flange 20A of the rocker outer panel 20 and an upper flange 22A of the floor side member 22.
A is welded between A and
Is welded between the lower flange 20B of the rocker outer panel 20 and the flange 24B of the floor pan 24.

As shown in FIG. 1, near the front side of the center pillar 30, a front floor cross member 32 is disposed along the vehicle width direction. The cross-sectional shape of the front floor cross member 32 as viewed in the vehicle width direction is a hat shape with the lower side of the vehicle body opened, and a flange 32B is formed at the lower end of the front wall portion 32A toward the front of the vehicle body. A flange 32D is formed at the lower end of the portion 32C toward the rear of the vehicle body. The flanges 32B and 32D of the front floor cross member 32 are welded to the upper surface 24A of the floor pan 24. Therefore, the front floor cross member 32 and the floor pan 24 form a closed section 34 extending in the vehicle width direction.

The end 32E of the front floor cross member 32 in the vehicle width direction is connected to the side wall 22 of the floor side member 22.
C is inserted into the closed section 26 through a notch 36 cut out from the lower side of the vehicle body. A flange 22D is formed on the outer periphery of the notch 36 of the floor side member 22 toward the inside in the vehicle width direction.
Are welded to the outer periphery of the front floor cross member 32.

The flanges 32B and 32D of the vehicle width direction end 32E of the front floor cross member 32 are welded to the lower surface 28C of the rock reinforce 28, respectively. Also, the front wall 3 of the front floor cross member 32
The end of the 2A in the vehicle width direction is bent forward of the vehicle body and the flange 3
The end of the rear wall 32C of the front floor cross member 32 in the vehicle width direction is bent rearward of the vehicle body to form a flange 32G. These flanges 32F,
32G is welded to the side wall 28D of the rock reinforce 28, respectively. An end portion of the upper surface portion 32H of the front floor cross member 32 in the vehicle width direction is bent upward in the vehicle body to form a flange 32J.

As shown in FIG. 2, the flange 32J of the front floor cross member 32 is welded between the flange 28A of the rocker reinforcement 28 and the upper flange 22A of the floor side member 22.

Next, the operation of this embodiment will be described. In the vehicle body structure of the present embodiment, the end 32E of the front floor cross member 32 in the vehicle width direction penetrates the side wall 22C of the floor side member 22 of the rocker 12, and is skewered. Further, a vehicle width direction end portion 32E of the front floor cross member 32 is welded to a rocker reinforcement 28 fixed to the closed cross-section portion 26, and the rocker outer panel 20 constituting the vehicle width direction outer portion of the rocker 12, ie, The front floor cross member 32 is not welded to a portion serving as a design surface of the locker 12.

Accordingly, no distortion occurs on the design surface of the rocker 12, and the appearance quality of the rocker 12 does not deteriorate. The rocker reinforcement 28 is fixed inside the rocker and has a hat-shaped cross-sectional shape as viewed from the vehicle front-rear direction with the inside of the vehicle body opened like the rocker outer panel 20 .
The end 32E in the vehicle width direction is a cross section of the rock reinforce 28.
And extends inside the cross section of the rock reinforce 28
By joining the same, the strength of the joint between the rocker 12 and the front floor cross member 32 can be improved as in the case where the vehicle width direction end 32E of the front floor cross member 32 is joined to the rocker outer panel 20.

In the vehicle body structure of this embodiment,
End 32E in the vehicle width direction of the front floor cross member 32
Is welded to the rock reinforce 28, the rock reinforce 28, the rocker outer panel 20, and the floor side member 22 can be welded. For this reason, there is no need to provide a work hole for welding the front floor cross member on the floor side member 22, and the coupling strength and rigidity are improved, and the steering stability is improved.

In this embodiment, the vehicle body structure of the vehicle according to the present invention is formed by the rocker 12 and the front floor cross member 32.
An example in which the present invention is applied to a connection portion with a rocker 12 is described as shown in FIG.
And the center floor cross member 40.

As shown in FIG. 5, a step portion 24C is formed at a position corresponding to the rear end 12B of the rocker 12 of the floor pan 24 so that the rear side in the vehicle longitudinal direction projects upward.
A center floor cross member 40 is arranged on the lower surface side of the step portion 24C. The cross-sectional shape of the center floor cross member 40 viewed from the vehicle width direction is L-shaped. The front end of the lower surface 40A of the center floor cross member 40 is bent downward to form a flange 40B, which is welded to the step 24C of the floor pan 24. Vertical wall portion 40 of center floor cross member 40
The upper end of C is bent rearward to form a flange 40D, and the flange 40D is welded to the lower surface 24B of the floor pan 24.

The end 40E of the center floor cross member 40 in the vehicle width direction is connected to the side wall 22C of the floor side member 22.
Is inserted into the closed section 26 from a notch 42 cut out from the lower side of the vehicle body at the rear end. A flange 22 </ b> E is formed on the outer periphery of the notch 42 of the floor side member 22 toward the inside in the vehicle width direction.
2E is welded to the vehicle width direction end 24D of the floor pan 24.

The flange 40D at the vehicle width direction end 40E of the center floor cross member 40 is
2 is welded to the rear end portion 22F of the upper surface, and the lower surface portion 40A of the vehicle width direction end portion 40E of the center floor cross member 40.
Are welded to the lower surface 28C of the rock reinforce 28. An end of the vertical wall portion 40C of the center floor cross member 40 in the vehicle width direction is bent forward of the vehicle body to form a flange 40F. The flange 40F is welded to the side wall portion 28D of the rock reinforce 28.

Accordingly, also in this case, the rocker 12 and the rocker outer panel 20 are connected to the end 40E in the vehicle width direction without deteriorating the appearance quality of the design surface of the rocker 12, as in the case where the rocker outer panel 20 is connected. The strength of the joint with the center floor cross member 40 can be improved.

[0030]

The vehicle body structure according to the present invention comprises a rocker reinforcement fixed inside the rocker and having a hat-shaped cross section viewed from the front and rear of the vehicle body and having an open inside of the vehicle body; Extends through the inside of the vehicle width direction and extends into the cross section of the rock reinforce,
The cross member is connected to the inside of the cross section of the reinforcement, so that the strength of the connection between the rocker and the cross member can be improved without lowering the appearance quality of the rocker. Has the effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention, as viewed from an obliquely front inner side of the vehicle body.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 1;

FIG. 4 is a schematic plan view showing a vehicle body structure according to one embodiment of the present invention.

FIG. 5 is a perspective view of a vehicle body structure according to another embodiment of the present invention, viewed from diagonally forward inside the vehicle body.

FIG. 6 is a perspective view showing a vehicle body structure according to a conventional example, viewed obliquely from the front inside the vehicle body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body 12 Rocker 20 Rocker outer panel 22 Floor side member 24 Floor pan 26 Closed section 28 Rocky reinforcement 28A Flange 28C Lower surface 28D Side wall 28E Upper surface 32 Front floor cross member 32B Flange 32D Flange 32E Vehicle width direction end 32F Flange 32G Flange 32J Flange 40 Center floor cross member 40D Flange 40E Vehicle width direction end 40F Flange

Claims (1)

(57) [Claims] A rocker reinforcement fixed inside the rocker and having a hat-shaped cross section as viewed from the front and rear direction of the vehicle body, and an end portion in the vehicle width direction penetrating through an inner portion of the rocker in the vehicle width direction; Extending into the cross section of the rock
A vehicle body structure, comprising: a cross member coupled to an inner side of a cross-section of a reinforcement .