JP3909628B2 - Body structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention particularly relates to a vehicle body structure for a welded structure of a side body panel of an automobile.
[0002]
[Prior art]
Conventionally, automobile side bodies, etc., are assembled by separately assembling the outer panels and inner panels separately, and then welding the assembled outer panels and inner panels together. Configured. However, due to the factory line configuration, the inner panels may not be welded to each other, and when the roof side inner panel 51 is combined with the side body outer panel 52 as shown in FIGS. In the portion, work holes 54 and 55 are provided in the roof side inner panel 51 and the reinforcement 53, and a spot gun 56 is inserted through the work holes 54 and 55 so that the roof side inner panel 52 and the reinforcement 53 are joined. Assembly work is performed by welding the points. In the figure, 57 is a roof panel, 58 is a drip rail, 59 is a pillar inner panel, and 60 is a roof lining (molded ceiling).
[0003]
[Problems to be solved by the invention]
In such a conventional vehicle body structure, it is necessary to insert the spot gun 56 from the work holes 54 and 55 when performing the welding work. Therefore, the welded portion and the side body of the roof side inner panel 51 and the reinforcement 53 are used. Unless a sufficient clearance is provided between the outer panel 52 and the outer panel 52, welding work becomes difficult. However, in view of the interior appearance, there is a restriction in providing the roof lining 60, the trim, etc., with a protruding portion that protrudes indoors. Therefore, with the conventional vehicle body structure, it has been impossible to obtain a sufficient clearance for inserting the spot gun 56.
On the other hand, when such a clearance cannot be obtained sufficiently, spot welding with the spot gun 56 cannot be performed, so an adhesive is used or CO ₂ welding is performed, which increases the amount of work and costs. Invited high.
[0004]
The present invention has been made in view of such a situation, and an object of the present invention is to make it possible to reliably reduce the cost by performing spot welding of the roof side inner panel without impairing the appearance of the interior. To provide a structure.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems of the prior art, in the present invention, in the vehicle body structure in which the upper ends of the side body outer panel and the roof side inner panel are joined with the reinforcement interposed therebetween, the roof side inner panel and the welding holes in reinforcement provided, the spot welding portions between the roof side inner panel located below said working hole and the reinforcement is provided with a recess which projects into the side body outer panel side, the recess As the weld joint surface, the roof side inner panel and the reinforcement are spot welded .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
[0007]
1 to 4 show an embodiment of a vehicle body structure according to the present invention. In the figure, reference numeral 1 denotes a four-wheeled vehicle to which the vehicle body structure according to the present embodiment is applied. The upper part of the side body of the four-wheeled vehicle 1 extends in the longitudinal direction of the vehicle body and is spaced apart in the vehicle width direction. The side body outer panel 2 and the roof side inner panel 3 are bent.
As shown in FIGS. 2 and 3, the upper ends of the side body outer panel 2 and the roof side inner panel 3 are bent so as to be opposed to each other, and the upper ends of the lean reinforcement 4 extending in the vertical direction of the vehicle body are interposed between the upper ends. The lower portion of the reinforcement 4 is joined to the upper end of the pillar inner panel 5 extending in the vertical direction of the vehicle body by spot welding. That is, the vehicle body structure according to the present embodiment is a structure that does not require a part assembling step between the inner panels, here, the roof side inner panel 3 and the pillar inner panel 5.
[0008]
As shown in FIGS. 2 to 4, welding work holes 7 and 8 for inserting a spot gun 6 for spot welding are formed in corresponding portions of the roof side inner panel 3 and the reinforcement 4. In addition, a recessed portion 9 that protrudes toward the side body outer panel 2 is provided at a spot weld location between the roof side inner panel 3 and the reinforcement 4 located below the work holes 7 and 8. And the welding joint surface 9a which forms the upper wall of this recessed part 9 moves down the slope which has an angle which is easy to weld toward the side body outer panel 2 side, ie, the spot gun 6 upward from the vehicle body downward direction. It is formed in an inclined surface shape. Furthermore, the end of the weld joint surface 9 a is arranged so as not to protrude from the indoor side surface M of the roof side inner panel 3 to the indoor R side.
[0009]
For this reason, the lower end portion of the roof side inner panel 3 corresponding to the concave portion 9 is bent at a substantially right angle toward the side body outer panel 2 side, and has a substantially L-shaped cross section. The intermediate portion of the reinforcement 4 corresponding to the recess 9 is recessed toward the side body outer panel 2, the upper and lower wall surfaces are inclined in a direction intersecting each other, and the upper wall surface is the lower end of the roof side inner panel 3. It is configured to be placed on top of each other.
[0010]
On the indoor side of the roof side inner panel 3, the reinforcement 4 and the pillar inner panel 5, a roof lining (molded ceiling) 10 is disposed along these panels. 8 and the recessed part 9, and also the welding location is covered so that it cannot be seen from the indoor side. In the figure, reference numeral 11 denotes a roof panel, and a lower end portion of the roof panel 11 is bent at a right angle, and a bottom surface of a drip rail 12 having a substantially U-shaped cross section is fixed to the lower end portion. The drip rail 12 is provided along the longitudinal direction of the vehicle body, and the inner side portion is joined to the outer surface of the side body outer panel 2.
[0011]
In the vehicle body structure of the four-wheeled vehicle 1 according to the embodiment of the present invention, even if the roof side inner panel 3 and the side body outer panel 2 are combined with the side body outer panel 2, the roof side inner panel 3 and Welding work holes 7 and 8 are formed at corresponding positions of the reinforcement 4, and a recess 9 is provided at a welding position below the work holes 7 and 8 so as to protrude toward the side body outer panel 2. Since the weld joint surface 9a of the recess 9 is a downwardly inclined surface, there is no need for a dedicated jig for assembling the parts between the inner panels, and a space in the factory can be made. welding can be performed, not necessary have adhesive or CO ₂ welding used in the conventional structure, achieving reduction in workability improvement and cost spot welding this Can. In addition, the end of the weld joint surface 9a that forms the upper wall of the recess 9 is disposed so as not to protrude from the indoor side surface M of the roof side inner panel 3 to the indoor R side, and thus has an effect on the roof lining 10. It can be prevented and the appearance of the interior is not impaired.
[0012]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
[0013]
【The invention's effect】
As described above, in the vehicle body structure according to the present invention, the upper ends of the side body outer panel and the roof side inner panel are joined with the lean force interposed therebetween, and the roof side inner panel and the lean force force are joined to each other. A welding work hole is provided, and a concave portion projecting toward the side body outer panel is provided at a spot welding location between the roof side inner panel and the lean reinforcement located below the work hole, and the concave portion is used as a welding joint surface. Since the roof side inner panel and the reinforcement are spot welded , the roof side inner panel can be reliably joined only by spot welding without impairing the interior appearance. or using an adhesive so, it is not necessary to perform the CO ₂ welding, assembling work It can be improved and cost sex.
[Brief description of the drawings]
FIG. 1 is a perspective view conceptually showing a four-wheeled vehicle to which a vehicle body structure according to an embodiment of the invention is applied.
FIG. 2 is an enlarged perspective view showing a part A in FIG.
3 is a cross-sectional view taken along line BB in FIG.
FIG. 4 is an exploded perspective view showing a roof side inner panel, a reinforcement, and the like constituting the vehicle body structure according to the embodiment of the present invention.
FIG. 5 is a perspective view showing the vicinity of a side body outer panel and a roof side inner panel joined by a conventional vehicle body structure.
6 is a cross-sectional view taken along line CC in FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Four-wheeled vehicle 2 Side body outer panel 3 Roof side inner panel 4 Reinforcement 5 Pillar inner panel 6 Spot gun 7, 8 Welding work hole 9 Recess 9a Welding interface

Claims (3)

In the vehicle body structure in which the upper ends of the side body outer panel and the roof side inner panel are joined with the reinforcement between them,
The roof side inner panel and the reinforcement are provided with welding work holes, and a concave portion protruding toward the side body outer panel at a spot welding position between the roof side inner panel and the lean force located below the work holes. A vehicle body structure characterized by spot welding the roof side inner panel and the reinforcement with the recess as a weld joint surface . The welding surface that forms the recess located below the working hole is formed in the inclined surface shape, the inclined surface of the weld joint surface is formed inclined downward toward the side body outer panel side vehicle body structure according to claim 1, characterized in that is. The welding work hole of the roof side inner panel is formed on the indoor side surface of the roof side inner panel, and the recess is provided below the welding work hole and protruding toward the side body outer panel. The weld joint surface forming the upper wall is formed so that the height of the concave portion becomes lower as approaching the welding work hole, and is formed in an inclined surface shape having an angle with the welding work hole. The vehicle body structure according to claim 1 , wherein the reinforcement is placed on a joint surface and the roof side inner panel and the reinforcement are spot welded .

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