JPH10167115A - Car body structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the tortional rigidity of a car body and a car width direc tion rigidity by supplementing a strength shortage by the division construction of the front/rear sides of a roof side rail inner. SOLUTION: A reinforce 16 is arranged in front/rear directions in a separated state along the inner surface of the rail outer 5 of a roof side rail 4 and an extension part 17 extending in a separated state along its inner surface across the rear end of a rear side rail inner 12B is formed on the rear end of the front side rail inner 12A of a rail inner 12 and by constituting a closed section part in the closed section of the nearly rear half part of the roof side rail 4 after joining these extension part 17 with the reinforce 16, the tortianal rigidity of the car body and a car width direction rigidity are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle body structure,
In particular, the present invention relates to a structure around a roof side rail constituting a longitudinal frame member on a roof side portion.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional vehicle body structure, in which reference numeral 1 denotes a body side outer, which is divided into a front side 2 and a rear fender 3 which is a rear side, and each is integrally press-formed.

The front side body side outer 2 is formed by integrally pressing a front side 5A of a rail outer 5 of a roof side rail 4 to be described later, a front pillar outer 6, a side sill outer (not shown), and a center pillar reinforce 8 integrally. is there.

The rear fender 3 has a rear side 5B of the rail outer 5 of the roof side rail 4 and a center pillar outer 9.
And the rear pillar outer 10 are integrally formed.

[0005] Reference numeral 11 denotes a rear side inner panel, and a rear side 12B of the rail inner 12 of the roof side rail 4;
Center pillar inner 13 and rear pillar inner 14
And the rear side 12B of the rail inner 12 is formed to project slightly forward from the center pillar inner 13.

The front body side outer 2 and the rear fender 3 have the center pillar outer 9 fitted to the center pillar reinforce 8 and the front end of the rear rail outer 5B wrapped around the rear end of the front rail outer 5A. Then, a portion that is externally fitted to the side sill outer and a portion where the front side rail outer 5A and the rear side rail outer 5B overlap are joined by spot welding, and the upper and lower edge flanges 5A of the front side rail outer 5A are joined together.
a, the upper and lower edge flanges 12a of the front side rail inner 12A are overlapped and joined by spot welding.

Next, the rear side inner panel 11 is abutted against the inside of the rear fender 3 and the rear pillar inner 1
4, the front and rear edge flanges 14a are overlapped with the front and rear edge flanges 10a of the rear pillar outer 10 and joined by spot welding, and the front end of the rear side rail inner 12B is outside the rear end of the front side rail inner 12A. And the upper and lower edge flanges 12b of the rear rail inner 12B are overlapped with the upper and lower edge flanges 5b of the rear rail outer 5B and the upper and lower edge flanges 12a of the front rail inner 12A. Joined by welding, and the front and rear edge flanges 1 of the center pillar inner 13
3a is superimposed on the front and rear edge flanges 8a of the center pillar reinforce 8, and the front and rear edge flanges 8a are sandwiched in the middle by spot welding integrally with the front and rear edge flanges 9a of the center pillar outer 9. Join.

Then, the side edge flange 15a of the roof panel 15 is overlapped with the lower edge flanges 5a, 5b of the rail outer 5 to lower the lower edge flanges 12a, 12b of the rail inner 12.
The body is joined together by spot welding so that robots can easily assemble the body side automatically.

[0009]

As to the procedure for assembling the body side, after assembling the front body side 2 and the rear fender 3 as described above, the front rail inner 12A is attached to the front body side 2. In order to assemble and then assemble the rear side inner panel 11, the lap portion between the rear end of the front side rail inner 12A and the front end of the rear side rail inner 12B requires upper and lower edge flanges 12a for spot welding work. , 12b are joined only to the upper and lower edge flanges 5a, 5b of the rail outer 5, and the lap portion between the rear end of the front side rail inner 12A and the front end of the rear side rail inner 12B is entirely spotted. There is no joining by welding, and it is undeniable that strength and rigidity are disadvantageous.

Therefore, as shown in, for example, Japanese Utility Model Laid-Open Publication No. 64-16489, a roof rail provided in the front and rear direction within a closed cross section of the roof side rail is provided at a portion connected to the center pillar of the roof side rail. With the reinforcement and the extension integrally formed on the upper end of the pillar reinforce, the roof side rail is partially enclosed in the closed cross section,
In other words, it is conceivable to partially form a closed cross-section at a portion where the center pillar is continuously provided to reinforce the rail, but as described above, the rail inner 12 is connected to the front 12A and the rear 12A.
And B, the rear side of the front side 12A and the rear side
Since the entire lap portion with the front end portion of B cannot be spot-welded, there still remain problems in strength and rigidity.

In view of the above, the present invention has been made to improve the efficiency of automatic assembly of the body side by a robot, so that even if the rail inner of the roof side rail is divided into two parts, a front side and a rear side, The present invention provides an automobile body structure in which the vehicle body can be advantageously assembled in terms of strength and rigidity.

[0012]

According to a first aspect of the present invention, at least a roof side rail which forms a closed cross section by a rail outer and a rail inner is divided into a front side and a rear side, and the front side is divided into a front side and a rear side. In a structure in which the rear end of the rail inner and the front end of the rear side rail inner are wrapped and connected in the vicinity of the connecting portion of the center pillar connected to the roof side rail, the front end and the rear end of the rail outer are used. The rear rail inner at the rear end of the rear rail inner at the rear end of the front rail inner, while the reinforcement is disposed in a spaced state along the inner surface of the rail outer over the portion. An extended portion is formed along the inner surface to be spaced apart and joined to the reinforce, and the extended portion and the extended portion are formed in a closed cross section of a substantially rear half of the roof side rail. It is characterized by being configured the closed-section portion which consists of in-force.

According to a second aspect of the present invention, the lower edge flange of the reinforcement and the lower edge flange of the extended portion of the front side rail inner are combined with the lower edge flange of the rail outer and the rear side rail inner. The rail outer is joined to the lower edge flange at a position offset from the joint between the lower edge flange and the side edge flange of the roof panel inside the closed cross section of the roof side rail.

According to a third aspect of the present invention, a plurality of notches are formed in the upper edge flange of the extended portion of the front rail inner according to the first and second aspects in the longitudinal direction. The upper edge flange is joined to the upper edge flange of the reinforcement and the upper edge flange of the rear rail inner.

[0015]

According to the first aspect of the present invention, the rail inner of the roof side rail is divided into a front side and a rear side near a portion connected to the center pillar, and a rear end of the front side rail inner is provided. Even if the front end of the rear side rail inner is wrapped and connected, a reinforce is arranged on the inner surface of the rail outer from the front end to the rear end in a spaced state along the inner surface. That the extended portion formed at the rear end of the front rail inner is spaced apart along the inner surface of the rear end of the rear rail inner, and By forming a closed cross-section in the closed cross-section of the roof side rail approximately in the rear half with the reinforcement, the strength and rigidity are further increased from around the center pillar connecting part of the roof side rail to the rear end. That Kill.

Therefore, even if the entire lap portion between the rear end of the front rail inner and the front end of the rear rail inner cannot be joined by spot welding due to the assembling procedure of the body side, even if the entire body cannot be joined by spot welding. In addition to torsional rigidity, it is possible to significantly increase the resistance to input to the vehicle center side due to a side collision of the vehicle or the like.

According to the second aspect, in addition to the effect of the first aspect, the joint between the lower edge flange of the rail outer, the lower edge flange of the rear side rail inner and the side edge flange of the roof panel, and the lower portion of the reinforcement are provided. Because the edge flange and the joint between the lower edge flange of the extended portion of the front side rail inner and the lower edge flange of the rail outer are vertically offset, when joining these lower edge flanges by spot welding, It is possible to avoid three-panel striking which tends to cause panel fusing on the outer panel, so that three-panel striking can be performed. Therefore, each lower edge flange can be reliably spot-welded, and joint strength can be secured. .

According to the third aspect, in addition to the effects of the first and second aspects, in addition to the upper edge flange of the rail outer and the upper edge flange of the reinforce through the notch forming portion formed in the extension of the front side rail inner, Since the upper edge flange of the rear side rail inner can be joined by spot welding as three-panel striking, reliable spot welding can be performed and the joining strength can be secured.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings, in which the same reference numerals are assigned to the same parts as in the above-mentioned conventional configuration.

1 to 3, a body side outer 1 is a front side rail outer 5 of a roof side rail 4.
A, a front body side outer 2 in which a front pillar outer 6, a side sill outer (not shown) and a center pillar reinforce 8 are integrally formed, a rear rail outer 5B of the roof side rail 4, a center pillar outer 9, And a rear fender 3 which is a rear body side outer formed by integrally pressing the rear pillar outer 10 with the rear fender 3.

The front body side outer 2 and the rear fender 3 have the center pillar outer 9 fitted on the center pillar reinforce 8 and the rear rail outer 5 outside the rear end of the front rail outer 5A.
The front end of B is wrapped so as to be joined by spot welding at a portion that is externally fitted to the side sill outer and a portion where the front rail outer 5A and the rear rail outer 5B overlap.

Rail inner 12 of roof side rail 4
Are divided into a front side rail inner 12A and a rear side rail inner 12B integrally formed with the rear side inner panel 11, and are formed separately.
In A, after the body side outer 1 is assembled, the upper and lower edge flanges 12a are overlapped with the upper and lower edge flanges 5a of the front side rail outer 5A and joined by spot welding.

The rear side inner panel 11 is formed by integrally pressing a rear side rail inner 12B, a center pillar inner 13 and a rear pillar inner 14 together.

After the rear side rail inner 12A is assembled, the rear side inner panel 11 abuts against the inside of the rear fender 3 and the front and rear edge flanges 14a of the rear pillar inner 14 are overlapped with the front and rear edge flanges 10a of the rear pillar outer 10. And the front end protruding forward of the rear rail inner 12B is wrapped outside the rear end of the front rail inner 12A to form upper and lower edge flanges of the rear rail inner 12B. 12b is overlapped with the upper and lower edge flanges 5b of the rear rail outer 5B and the upper and lower edge flanges 12a of the front rail inner 12A and joined by spot welding, and further, the front and rear edge flanges of the center pillar inner 13 are formed. 13a is overlapped on the front and rear edge flanges 8a of the center pillar reinforce 8. Te, so that bonding front, before the center pillar outer 9 in a state of sandwiching the trailing edge flange 8a to the intermediate, together with the trailing edge flanges 9a by spot welding.

The rear side inner panel 11
After assembling, the side edge flange 15a of the roof panel 15 is overlapped with the lower edge flanges 5a and 5b of the rail outer 5 and is integrally joined to the lower edge flanges 12a and 12b of the rail inner 12 by spot welding.

The basic structure described above is the same as that of the prior art, except that the rail outer 5 of the body side outer 1 extends along the inner surface of the rail outer 5 from the front end to the rear end thereof. Is arranged.

After the front body side outer 2 and the rear fender 3 have been assembled,
The upper and lower edge flanges 16a are overlapped with the upper and lower edge flanges 5a of the rail outer 5 and joined by spot welding.
The general portion between the upper and lower edge flanges 16a, 16a is disposed so as to be slightly separated from the rail outer 5.

On the other hand, the front side rail inner 12A
An extended portion 17 is formed at the rear end of the rear rail inner part 12B so as to extend to the rear end.

The extension portion 17 is provided on the upper and lower edge flanges 1.
The draw forming depth is made shallow so that the general portion between 7a and 17a is slightly separated along the inner surface of the rear side rail inner 12B. It overlaps with the lower edge flange 16a and is joined by spot welding to form a closed section 18 composed of the extended portion 17 and the reinforce 16 in the closed section of the substantially rear half of the roof side rail 4. .

Here, the lower edge flange 16a of the reinforcement 16 and the lower edge flange 17a of the extension portion 17 are formed by the lower edge flange 5b of the rear rail outer 5B, the lower edge flange 12b of the rear rail inner 12B, and the roof. Spot welding is performed by overlapping with the lower edge flange 5b of the rear rail outer 5B at a position offset inside the closed cross section of the roof side rail 4 from the joint with the side edge flange 15a of the panel 15, that is, at a position offset upward. It is joined by.

The upper edge flange 16a of the reinforcement 16 and the upper edge flange 17a of the extension portion 17 are sandwiched between the upper edge flange 5b of the rear rail outer 5B and the upper edge flange 12b of the rear rail inner 12B. Although the four panels are joined in a stacked state, a plurality of notches 19 are formed in the upper edge flange 17a of the extension portion 17 in the longitudinal direction thereof.
b, 16a, and 12b are joined by spot welding.

As described above, the upper edge flange 17 of the extension portion 17 is provided.
If the notch 19 is formed in the upper flanges 16a, 17a, and 12b with the upper flange 5b of the rear rail outer 5B as a mounting reference, the notch 19 is formed on the upper edge flange 12b that is the lowermost layer. Since it is only necessary to form a jiggle portion that enters the notch 19, the notch 19 can be made as small as possible, and as described later, these upper edge flanges are formed as three-panel punches that are advantageous for spot joining through the notch 19. 5b, 16a, and 12b can be integrally spot-joined, so that the formation of the notch 19 can avoid the problem of strength.

According to the structure of the above-described embodiment, the front side of the rail inner 12 of the roof side rail 4 is connected to the center pillar (in the vicinity of the center pillar outer 9 and the center pillar inner 13). Even if it is divided into the side rail inner 12A and the rear side rail inner 12B, and the rear end of the front side rail inner 12A and the front end of the rear side rail inner 12B are connected to each other, The inner surface of the rail outer 5 is provided with a reinforcement 16 spaced from the front end to the rear end along the inner surface, and an extension formed at the rear end of the front side rail inner 12A. A portion 17 is disposed along the inner surface of the rear side rail inner 12B so as to be spaced apart along the rear end thereof. By forming the closed cross-section 18 in the closed cross-section of the substantially rear half portion of the id rail 4, the strength and rigidity can be further increased from around the center pillar continuous portion of the roof side rail 4 to the rear end. .

Accordingly, even if the entire lap portion between the rear end of the front side rail inner 12A and the front end of the rear side rail inner 12B cannot be joined by spot welding due to the assembly procedure of the body side, Not only the torsional rigidity of the vehicle body, but also the resistance to input to the vehicle center due to side collision of the vehicle can be significantly increased.

In this embodiment, the lower edge flange 5b of the rear rail outer 5B and the rear rail inner 1
The lower edge flange 16a of the reinforce 16 and the lower edge flange 17a of the extending portion 17 are located at a position offset above the joint between the lower edge flange 12b of the 2B and the side edge flange 15a of the roof panel 15. Because the rear side rail outer 5B is joined to the lower edge flange 5b and these joints are three-panel striking to avoid four-panel striking which tends to cause panel fusing on the outermost panel during spot welding. In addition, reliable spot joining can be performed, and joining strength can be secured.

Further, the rear rail outer 5B, the reinforcement 16, the extending portion 17, and the rear rail inner 1 are provided.
2B, the upper edge flange 17a of the extending portion 17 may be located at the joint of the upper edge flanges 5b, 16a, 17a, and 12b.
The upper edge flanges 5b, 16a, and 12b are three-panel punched and spot-welded through a plurality of notches 19 formed in the above-described manner, so that the upper edge side can be securely joined to secure the joint strength. can do.

In the above-described embodiment, a two-door type body side has been described as an example. However, it goes without saying that this can be applied to a four-door type body side.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

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

FIG. 4 is an exploded perspective view showing a conventional structure.

[Explanation of symbols]

 4 Roof side rail 5 Rail outer 5A Front side rail outer 5a Upper and lower edge flange 5B Rear side rail outer 5b Upper and lower edge flange 12 Rail inner 12A Front side rail inner 12a Upper and lower edge flange 12B Rear side rail inner 12b Upper and lower edge Flange 15 Roof panel 15a Side edge flange 16 Reinforce 16a Upper and lower edge flange 17 Extension 17a Upper and lower edge flange 18 Closed section 19 Notch

Claims (3)

[Claims] At least one of a roof side rail having a closed section formed by a rail outer and a rail inner is divided into a front side and a rear side, and a rear end of the front side rail inner and a rear side rail inner are formed. In a structure in which the front end and the center pillar connected to the roof side rail are connected and wrapped near each other, the rail outer extends along the inner surface of the rail outer from the front end to the rear end of the rail outer. The rain force is disposed in a separated state, while the rain force is disposed in a separated state along the inner surface of the rear rail inner over the rear end of the rear rail inner at the rear end of the front rail inner. An extended portion to be joined to the force is formed, and a closed cross-sectional portion consisting of the extended portion and the rain force is formed in the closed cross section of the substantially rear half of the roof side rail. A body structure of an automobile, characterized by being achieved. 2. A lower edge flange of a reinforcement and a lower edge flange of an extended portion of a front rail inner are connected to a lower edge flange of a rail outer, a lower edge flange of a rear rail inner and a side edge flange of a roof panel. 2. The vehicle body structure according to claim 1, wherein the rail outer is joined to a lower edge flange of the roof outer rail at a position offset inside the closed cross section of the roof side rail from the joint. 3. A plurality of notches are formed in the upper edge flange of the extension of the front rail inner in the longitudinal direction, the upper edge flange of the rail outer, the upper edge flange of the reinforce, and the rear rail at the notch formation portion. 3. The vehicle body structure according to claim 1, wherein the upper edge flange is joined to the inner side.