JPH0249186Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the body structure of an automobile, and particularly relates to improving the structure near the intersection of the roof panel and the rear pillar at the rear of the vehicle body.

(Prior art) In the rear structure of an automobile body, a roof side rail is formed in a closed cross-section by an inner panel and an outer panel and extends back and forth along both sides of the roof panel, and a roof side rail is formed in a closed cross-section by an inner panel and an outer panel. The edges of the roof panel are overlapped and welded to the outer panel of the roof side rail. Further, the roof panel is superimposed on the outer panel of the rear pillar and joined by welding so as to form a smooth outer surface between the roof panel and the outer panel. In the conventional structure, a roof side rail reinforcement is arranged inside the roof side rail to reinforce it, and a rear pillar reinforcement is also arranged inside the rear pillar. By the way, at the intersection of the roof side rail and the rear pillar, the inner panels are either continuously formed integrally or joined to each other by welding, and the outer panels are also a continuous integral structure or are mutually connected. However, a T-shaped space is formed inside at this intersection, and since there is insufficient reinforcement between the roof side rail and the back window upper frame behind it, the roof side The problem is that the torsional moment borne by the rails is transmitted only to the rear pillar, causing large torsion in the vehicle body. In order to solve this problem, Japanese Utility Model Application No. 56-134277 proposes to arrange a connecting rail that runs from the rear end of the roof side rail through the T-shaped space mentioned above and reaches the back window upper frame. . This proposed structure can compensate for the lack of structural strength in the T-shaped space mentioned above.
However, in the rear of the vehicle, in addition to the structural strength problem mentioned above, the roof panel is now welded to the rear pillar outer panel at the top of the rear pillar, and weld distortion that occurs during this welding becomes a problem. . The structure according to Utility Model Application No. 56-134277 does not take this problem into consideration at all.

(Purpose of the present invention) Therefore, the purpose of the present invention is to ensure the structural strength of the rear part of the vehicle body, and to effectively prevent distortion of the welded portion between the roof panel and the rear pillar outer. The purpose of the present invention is to provide an automobile body structure.

(Configuration of the present invention) The above object of the present invention can be achieved by the following configuration. That is, the present invention has a roof side rail formed in a closed cross-sectional shape by an inner panel and an outer panel and extending in the longitudinal direction of the vehicle body, and a first rain provided within the roof side rail and extending in the same direction as the roof side rail. A rear pillar that is formed into a closed cross-section by a reinforcement, an inner panel, and an outer panel, and is continuous with the roof side rail, and a part of the outer panel is joined to the roof panel to form an overlapping part; a second reinforcement that is provided and extends above the first reinforcement in the vehicle body vertical direction;
The reinforcement is joined to the second reinforcement at a rear end portion to form a joint, and the second reinforcement is connected to the superposition formed by the outer panel of the rear pillar and the roof panel. a first overlapping part is formed by joining the corresponding contact part to the back side of the overlapping part, and the first reinforcement is connected to the second reinforcement. has a hat-shaped cross-sectional shape with flanges on both legs in front of the joint portion and the first overlapping portion, and is joined to the inner panel of the rear pillar at the peak portion thereof, and one of the flanges is connected to the inner panel of the rear pillar. The flange is joined to the outer panel of the rear pillar, and the other flange is joined to the overlapping part formed by the outer panel of the rear pillar and the roof panel, forming a second overlapping part. That is. One or both of the inner panel and outer panel of the roof side rail may be extended to form part of the inner panel or outer panel of the rear pillar, or vice versa. It may be extended to the roof side rail. Therefore, in the present invention, the expression "the rear pillar is continuous with the roof side rail" is used to include the case where some panels are arranged so as to straddle both.

In the present invention, it is preferable that the first reinforcement has a hat-shaped cross section with joining flanges on both sides at the continuous part between the roof side rail and the rear pillar, and one joining flange of the hat-shaped cross section is connected to the roof side rail. The other joining flange is preferably joined to the back surface of the overlapping part between the roof panel and the outer panel of the rear pillar. Furthermore, the second reinforcement is provided with a joint part that is continuous in the front-rear direction with the other joint flange of the first reinforcement, and this joint part is connected to the overlapping part between the roof panel and the rear pillar outer panel. It is preferable to bond it to the back surface of.

(Effects of the Present Invention) According to the present invention, the first reinforcement provided within the roof rail extends rearward, and its rear end portion is joined to the second reinforcement provided within the rear pillar. By this,
Sufficient reinforcement can be given to the space formed at the intersection of the roof rail and the rear pillar. Further, a portion of the first reinforcement is joined to the back surface of the overlapping weld between the roof panel and the rear pillar, and welding distortion at this portion can be prevented.

(Example) Referring to FIG. 1, the illustrated automobile body is
A front structure including left and right front fenders 1 and a bonnet 2, a front pillar 3 rising upward from the rear end of the front fender 1, and a rear structure including a rear fender 4 and a rear pillar 5 rising upward from the front end of the rear fender 4. , a roof panel 6 , and left and right doors 7 , and roof side rails 8 are arranged along both sides of the roof panel 6 . intersect at the part indicated by A. The present invention relates to the structure of the intersection between the roof side rail 8 and the rear pillar 5, which is indicated by A in FIG.

Referring to FIGS. 2 and 2A, the roof side rail 8 has a closed cross-section structure by welding an inner panel 10 and an outer panel 12 along both sides, and has a roof side rail inside. A reinforcement 18 is arranged. In this example, each of the inner panel 10 and the outer panel 12 includes a rear pillar inner panel 10a and a rear pillar outer panel 12a that continue integrally to the upper part of the rear pillar 5.
The panels 10a, 12a are welded together on both sides to form a closed cross-section structure.
A rear pillar reinforcement 20 is arranged inside the upper structure of the rear pillar 5 formed by the rear pillar inner panel 10a and the rear pillar outer panel 12a.

As shown in FIGS. 2, 2A and 7,
The rear pillar reinforcement 20 extends in the upper part of the rear pillar 5 in the vertical direction, and a joining flange 20a at the front edge and a joining flange 20b at the rear edge are welded to the rear pillar inner panel 10a, and the upper part of the leading edge 20c is welded to the rear pillar outer panel 12a. Welded. The rear pillar reinforcement 20 has a protrusion 20 extending in the width direction in the middle part.
d, and the rear pillar outer panel 12a is welded to this protrusion 20d, and the upper edge of the rear pillar outer panel 12a is welded to the reinforcement 20. Outer panel 12b
In order to facilitate welding work between the inner panel 10a and the reinforcement 20, working holes 28 and 30 are formed in the inner panel 10a.

As shown in FIG. 2, FIG. 2A, FIG. 5, and FIG. 6, the roof side rail reinforcement 18 is arranged so as to extend in the longitudinal direction of the vehicle body,
The roof side rail portion has a substantially Z-shaped cross-sectional shape, and a joining flange 18a at one end is welded to the roof side rail outer panel 12, and a joining flange 18b at the other end is welded to the inner panel 10, respectively. Rainforcement 18
is further extended rearward to reach the intersection where the roof side rail 8 and the rear pillar 5 intersect. At this extension, the reinforcement 18 has a hat-shaped cross-sectional shape as shown in FIG.
That is, as shown in FIG. 3, the joining flange 18a of the Z-shaped cross section of the reinforcement 18
is extended rearward as it is, and the part following the other joining flange 18b is one step lower to form a hat-shaped peak 18c, and on the opposite side of the connecting flange 18a with this peak 18c in between is a connecting flange 18e.
is formed. Furthermore, an inclined web 18d is formed at the rear end of the reinforcement 18 and extends obliquely from the peak 18c.
A joining flange 18f is formed continuously from d. As shown in detail in FIG. 5, at the rear end of the roof side rail reinforcement 18, an inclined web 18d is connected to the rear pillar reinforcement 2.
0, and the joining flange 18f
is welded to the top surface of the reinforcement 20. A working hole 22 is formed in the inner panel 10b for this welding work.

The roof panel 6 is arranged to cover the roof side rail 8 and the upper part of the rear pillar 5. That is, as shown in FIG. 2, the edge portion 6a of the roof panel 6 is placed over the outer panel 12 of the roof side panel 8 and welded thereto. Further, the roof panel 6 covers the upper part of the rear pillar 5, and the rear pillar reinforcement 20
The rear pillar outer panel 12a is overlapped and welded to the rear pillar outer panel 12a at the protrusion 20d. In order to form a smooth outer surface between the outer panel 12a and the roof panel 6, a stepped portion is formed at the overlapped portion with the roof panel 6, and the edge of the roof panel 6 is formed on the outer surface at this stepped portion. Panel 12a
MIG welded. As shown in FIG. 6, the connecting flange 18a of the rear extension of the roof side reinforcement 18 is connected to the rear pillar outer panel 12a near the upper end of the rear pillar outer panel 12a.
is welded to. Further, the opposite joining flange 18e is connected to the rear pillar outer panel 12a on the back side of the overlapping part between the edge of the roof panel 6 and the rear pillar outer panel 12a, that is, at a position continuous to the front from the protrusion 20d of the rear pillar reinforcement 20. is welded to. For this welding work, there are working holes 2 in the inner panel 10a.
4 is formed. The peak portion 18c of the reinforcement 18 is welded to the rear pillar inner panel 10a, and a working hole 26 is formed in the reinforcement 18 for this welding work.

In the structure described above, the reinforcement 18 of the roof side rail 8 is extended rearward, and the reinforcement 20 of the rear pillar 5 is extended rearward.
Since the T-shaped space at the intersection of the roof side rail 8 and the rear pillar 5 is welded to the Since it is joined to the back side of the overlapping welded part of the roof panel, it is possible to effectively prevent the occurrence of welding distortion due to welding between the roof panel and the rear pillar outer panel.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automobile using the present invention, Fig. 2 is a perspective view of the car body structure of the invention, Fig. 2A is a perspective view of the car body structure of the invention as seen from the outside, and Fig. 3 is a roof rail. Perspective view of reinforcement,
Fig. 4 is a perspective view of the rear pillar reinforcement, Fig. 5 is a cross-sectional view taken along line AA in Fig. 2, Fig. 6 is a cross-sectional view taken along line B-B in Fig. 2, and Fig. 7 is a cross-sectional view taken along line C-- in Fig. 2. It is a sectional view of C. Explanation of symbols, 10... Inner panel, 12...
...Outer panel, 14...Roof panel, 16
...Welded part, 18...Roof rail reinforcement, 20...Rear pillar reinforcement.

Claims (1)

[Scope of utility model registration request] A roof side rail formed in a closed cross-sectional shape by an inner panel and an outer panel and extending in the longitudinal direction of the vehicle; a first reinforcement provided within the roof side rail and extending in the same direction as the roof side rail; and the inner panel and the outer panel. and a rear pillar formed in a closed cross-section shape, continuous with the roof side rail, and having a part of the outer panel joined to the roof panel to form an overlapping part;
A second reinforcement provided within the rear pillar and extending above the first reinforcement in the vertical direction of the vehicle body.
the first reinforcement is joined to the second reinforcement at the rear end to form a joint, and the second reinforcement is connected to the outer panel of the rear pillar and the second reinforcement. a contact portion that is joined to the back surface of the overlapping portion formed by the roof panel, a first overlapping portion is formed by joining the corresponding contact portion to the back surface of the overlapping portion, and the first reinforcement has a hat-shaped cross-sectional shape with flanges at both legs in front of the joint with the second reinforcement and the first overlapping part, and is joined to the inner panel of the rear pillar at the peak part thereof. At the same time, one of the flanges is joined to the outer panel of the rear pillar, and the other flange is joined to the overlapping part formed by the outer panel of the rear pillar and the roof panel, and a second overlapping part is joined to the overlapping part formed by the outer panel of the rear pillar and the roof panel. An automobile body structure characterized by the following: