JPH0733781U - Car body structure - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to surely increase the rigidity of the rear upper corner portion of the slide door storage recess 4 with a simple structure. [Structure] An L-shaped reinforcing bracket 8 including a first coupling piece 81 coupled to the roof side rail 5 and a second coupling piece 82 coupled to the rear quarter outer panel 6a is provided at a rear upper corner of the sliding door storage recess 4. Is fixed to the roof side rail 5 and the rear quarter outer panel 6a connected to the rear end of the roof side rail 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a vehicle body structure having a doorway at a side portion of a vehicle body.

[0002]

[Prior art]

 Generally, in a one-box type automobile, as shown in, for example, Japanese Utility Model Laid-Open No. 3-70521, a vehicle door is provided with an entrance / exit that is opened / closed by a slide door. A storage recess for the slide door is formed on the outer peripheral edge, and a rear quarter window is provided behind the storage recess. The body structure of such a vehicle has a roof arranged along the upper edge of the storage recess. The rear end of the side rail is connected to the front end of the rear quarter outer panel that defines the rear edge of the storage recess, and the end of the roof panel in the vehicle width direction is fixed to the roof side rail or rear quarter outer panel. A drip rail is arranged along the vehicle width direction end of the roof panel.

[0003]

[Problems to be solved by the device]

 By the way, in the vehicle having the above-described body structure, since the corner portion of the rear upper portion of the accommodation recess serves as a confluent joint portion of the vehicle body frame member, it is necessary to increase the rigidity of the corner portion. As disclosed in Japanese Laid-Open Patent Publication No. 59-185164, when the height of the entrance / exit is made higher than the height of the rear quarter window to improve the passenger's entry / exitability, the drip rail is Since it breaks at the front edge of the rear quarter window, it becomes difficult to secure sufficient rigidity at the corner portion of the rear upper portion of the accommodation recess, and therefore, the roof panel and the rear quarter outer panel particularly at the corner portion are not secured. It is possible that a crack occurs in the welding.

The present invention has been developed in view of the above circumstances, and an object thereof is to provide a body structure of a vehicle capable of reliably increasing the rigidity in the above-mentioned corner portion with a simple structure. It is in.

[0005]

[Means for Solving the Problems]

 In the present invention, however, the rear end of the roof side rail 5 arranged along the upper edge of the storage recess 4 of the slide door provided on the periphery of the entrance / exit 2 provided on the side of the vehicle body is provided with It is connected to the front end of the rear quarter outer panel 6a that defines the rear edge, and at the end of the roof panel 7 in the vehicle width direction, the first connecting portion 71 that is connected to the roof side rail 5 and the upper end of the slide door. And a second connecting portion 72 that is connected to the rear quarter outer panel 6a, the first connecting portion 71 is connected to the roof side rail 5, and the second connecting portion 72 is connected to the rear quarter. It is fixed to the water panel 6a, and at the joint between the roof panel 7 and the rear quarter outer panel 6a, at the upper edge of the rear quarter window 3 provided on the rear quarter outer panel 6a. In a vehicle provided with a drip rail 60 extending rearward, a first coupling piece 81 coupled to the roof side rail 5 and a rear quarter outer panel 6a are coupled to a rear upper corner of the storage recess 4. The L-shaped reinforcing bracket 8 composed of the second connecting piece 82 is fixed to the roof side rail 5 and the rear quarter outer panel 6a.

[0006]

[Action]

 According to the present invention, by only fixing the reinforcing bracket 8 to the roof side rail 5 and the rear quarter outer panel 6a at the rear upper corner of the storage recess 4, the roof side rail 5 and the rear quarter outer panel 6a are secured. It is possible to sufficiently enhance the rigidity in the vicinity of the rear upper corner of the storage recess 4 where the roof panel 7 and the roof panel 7 merge.

[0007]

【Example】

 The vehicle shown in FIG. 1 is provided with a front entrance / exit 1 and a rear entrance / exit 2 that is opened and closed by a sliding door 10 and a rear quarter window 3 located behind the rear entrance / exit 2 on the side of the vehicle body. It is of a one-box type, and the height of the rear entrance / exit 2 is set higher than the height of the rear quarter window 3, and the storage recess of the slide door 10 is formed on the outer peripheral edge of the rear entrance / exit 2. 4 is provided.

A roof side rail 5 that defines the upper edge of the storage recess 4 is disposed on the upper edge of the storage recess 4, and the guide rail of the slide door 10 is attached to the roof side rail 5. On the inner side of the roof side rail 5, an outer side panel 51 and an inner side panel 52 that define the upper edge of the rear entrance 2 are arranged, while fixing 50. The upper ends of 51 and 52 are fixed to the inside of the roof side rail 5 by spot welding.

At the rear edge of the storage recess 4, a rear quarter outer panel 6a that defines the storage recess 4 and the rear edge of the rear entrance / exit 2 at the front end thereof is arranged, and the rear quarter outer panel 6a is provided. A rear quarter inner panel 6b is disposed inside, and the upper portion of the front end of the rear quarter outer panel 6a is fixed to the roof side rail 5 and the rear end of the outer side panel 51 by welding, and the rear quarter inner panel 6b is fixed. The upper part of the front end of the inner panel 6a is fixed to the rear end of the inner side panel 52 by welding as well.

A drip rail 60 extending along the upper edge of the rear quarter window 3 is fixed to the upper portion of the rear quarter outer panel 6a above the rear quarter window 3 by welding.

The above-mentioned rear quarter window 3 is provided at the upper center of both rear quarter panels 6a and 6b.

Further, at a vehicle width direction end portion of a roof panel 7 that constitutes a roof of an automobile, a first coupling portion 71 that is coupled to the roof side rail 5 and a position lower than the slide door 10 are provided. A second joint portion 72 that is joined to the rear quarter outer panel 6a is provided.

The first coupling portion 71 has a flange shape that extends substantially horizontally outward in the vehicle width direction, and the second coupling portion 72 has a front end portion partially left outward in the vehicle width direction. A flange extending in a substantially horizontal direction is provided, and a front end portion where the flange is not provided is a second front coupling portion 72a directly fixed to the rear quarter outer panel 6a, and the flange portion is fixed to the drip rail 60. A second rear joint portion 72b, the first joint portion 71 is fixed to the vehicle width direction outer end portion of the roof side rail 5 by spot welding, and the second front joint portion 72a is connected to the rear quarter outer panel. 6a and directly behind the rear upper corner of the storage recess 4 by brazing welding, and the second rear connecting portion 72b It is fixed to the drip rail 60 by spot welding.

In the body structure described above, the present invention provides a first connecting piece 81 that is connected to the roof side rail 5 and a second connecting piece that is connected to the rear quarter outer panel 6b at the rear upper corner of the storage recess 4. The L-shaped reinforcing bracket 8 including the connecting piece 82 is fixed to the roof side rail 5 and the rear quarter outer panel 6a.

That is, the reinforcing bracket 8 shown in the figure is made of a sheet metal member as shown in FIG. The flange 83 is integrally formed to enhance the rigidity of the reinforcing bracket 8, and the second coupling piece 82 is formed with a through hole 84 for plug welding. In the reinforcing bracket 8, the first joint piece 81 is spot-welded to the roof side rail 5 at the rear upper corner of the storage recess 4, and the second joint piece 82 is connected to the roof side rail 5. The plug is welded to the rear quarter outer panel 6a through the through hole 84.

Thus, the reinforcing bracket 8 is fixed to the roof side rail 5 and the rear quarter outer panel 6a at the corner portion so that the roof side rail 5, the rear quarter outer panel 6a, and the roof side rail 5 are fixed. The rigidity in the vicinity of the corner where the panel 7 joins is increased, and cracks can be suppressed from occurring in brazing welding between the second front joint 72a and the rear quarter outer panel 6a.

The inventor of the present application, however, does not mount the vehicle having the body structure of the embodiment (hereinafter referred to as a countermeasure vehicle) to the reinforcing bracket 8 and, as shown in FIG. 11, the rear quarter outer panel 6a. 9 shows the vicinity of the second front side joint portion 72a in each roof panel 7 of a vehicle having a body structure in which a patch-shaped reinforcement R is fixed to the joint portion between the roof side rail 5 and the roof side rail 5. The load of 1471 Nm acting upward is applied to one of the front wheels of the vehicle, and the load of 1471 Nm acting downward is applied to the rear wheel located diagonally to the front wheel. In addition, the stress acting on each of the compartments indicated by the symbols a to h in FIG. 9 was analyzed by a computer.

FIG. 10 shows the results of the analysis. In the figure, the X mark is the data of the comparative vehicle, and the ● mark is the data of the countermeasure vehicle.

As can be seen from the above analysis results, however, in the comparative vehicle, the stress applied to the section of the second front side connecting portion 72a, d and e, is very large. The stress applied to each section is generally small, and the effect of assembling the reinforcing bracket 8 has been clarified also from the experimental results.

[0020]

[Effect of device]

 As described above, according to the present invention, the rear end of the roof side rail 5 arranged along the upper edge of the storage recess 4 of the slide door provided on the periphery of the entrance / exit 2 provided on the side of the vehicle body has the storage recess 4 described above The rear quarter outer panel 6a that defines the rear edge is joined to the front end portion of the rear quarter outer panel 6a. A second connecting portion 72 that is connected to the rear quarter outer panel 6a is provided below the upper end, and the first connecting portion 71 is connected to the roof side rail 5 and the second connecting portion 72 is also provided. Is fixed to the rear quarter outer panel 6a, and the upper edge of the rear quarter window 3 provided on the rear quarter outer panel 6a is attached to the joint between the roof panel 7 and the rear quarter outer panel 6a. In a vehicle provided with a drip rail 60 extending rearward along a rear corner of the storage recess 4, the first coupling piece 81 coupled to the roof side rail 5 and the rear quarter outer panel 6a are coupled to each other. Despite the simple structure in which the L-shaped reinforcing bracket 8 including the second coupling piece 82 is fixed to the roof side rail 5 and the rear quarter outer panel 6a, the roof side rail 5 and the rear quarter outer panel 6a and the roof panel 7 are joined together, the rigidity in the vicinity of the rear upper corner of the storage recess 4 can be sufficiently increased, and the second joint portion 72 in the vicinity of the corner and the rear quarter outer panel. It is possible to suppress the occurrence of cracks at the welded portion with 6a.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of a vehicle body to which the present invention is applied.

FIG. 2 is a perspective view of a main part of a body structure according to the present invention.

FIG. 3 is a side view of the same.

FIG. 4 is an enlarged sectional view taken along line XX in FIG.

5 is an enlarged cross-sectional view taken along the line YY in FIG.

6 is an enlarged sectional view taken along line ZZ in FIG.

FIG. 7 is an enlarged sectional view taken along line WW in FIG.

FIG. 8 is a perspective view of a reinforcing bracket.

FIG. 9 is an explanatory view showing a division pattern of a roof panel for stress analysis.

FIG. 10 is a graph showing data of stress analysis.

FIG. 11 is a side view of the body of the comparative vehicle used for the stress analysis.

[Explanation of symbols]

 2 entrance / exit 4 storage recess 5 roof side rail 6a rear quarter outer panel 60 drip rail 7 roof panel 71 first connecting portion 72 second connecting portion 8 reinforcing bracket 81 first connecting piece 82 second connecting piece

Claims (1)

[Scope of utility model registration request] 1. A rear end portion of a roof side rail (5) disposed along an upper edge of a storage recess (4) of a slide door provided at a peripheral edge of an entrance / exit (2) provided on a side of a vehicle body. The first end is connected to the front end of the rear quarter outer panel (6a) that defines the rear edge of the storage recess (4), and is connected to the roof side rail (5) at the end of the roof panel (7) in the vehicle width direction. The first coupling part (71) is provided with a first coupling part (71) and a second coupling part (72) located below the upper end of the slide door and coupled to the rear quarter outer panel (6a). ) To the roof side rail (5) and the second joint portion (72) to the rear quarter outer panel (6a) so that the roof panel (7) and the rear quarter outer panel (6a) are joined together. , The rear quarter out A vehicle body structure is provided with a drip rail (60) extending rearward along an upper edge of a rear quarter window (3) provided on a rear panel (6a), the rear upper part of the storage recess (4). At the corner, an L-shaped reinforcing bracket (8) including a first connecting piece (81) connected to the roof side rail (5) and a second connecting piece (82) connected to the rear quarter outer panel (6a). Is fixed over the roof side rail (5) and the rear quarter outer panel (6a).