JPH0752787Y2 - Vehicle upper body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an upper body structure of a vehicle, more specifically, to a structure of a joint portion in which a front header is joined to a front pillar in a three-pronged shape.

(Prior Art) Generally, in a corner portion on the front side of a vehicle body of an automobile, an outer end portion of a front header extending in the vehicle width direction along an upper edge of a windshield is a front pillar extending to a roof along a side edge of the windshield. It is joined in a trifurcated shape. Since a large load is applied to this joint portion during traveling, improving the rigidity of this joint portion is a major problem in vehicle body design. For this reason, for example, as disclosed in Japanese Utility Model Laid-Open No. 61-59485, a reinforcing member for preventing deformation of the front header is provided at the joint portion of the front header to the front pillar, whereby the joint portion to the front pillar is provided. It has been proposed to form knots at.

However, when the joint is formed at the joint portion of the front header to the front pillar, there is a drawback that not only a separate member for reinforcement is required but also the joint work becomes complicated.

(Object of the Invention) Therefore, an object of the present invention is to provide an upper vehicle body structure for a vehicle, which does not require a separate reinforcing member, enhances the rigidity of the joint portion, and simplifies the joining work.

(Structure of the Invention) The feature of the present invention is that the front pillar reinforcement, which is sandwiched between the outer front pillar and the inner front pillar, and the front header form a double node at the joint between the two. There is something to do.

That is, a bottom-bottomed recess having a rising slope is formed on the outer side in the vehicle width direction at the joining end of the front header to the front pillar, and the front pillar reinforcement faces the front header. An extending portion is formed to extend, and a ship bottom-like recessed portion having a rising slope is formed on the outer side in the vehicle width direction on the extending portion. And
By joining the joining end portion of the front header and the extension portion of the front pillar reinforcement, the recesses thereof are overlapped with each other while the two rising slopes are kept at a predetermined interval in the vehicle width direction, A double node is formed at this joint.

According to the present invention, since the double header is formed by the front header and the front pillar reinforcement, the rigidity of the joint portion between the front header and the front pillar is improved. It can be remarkably improved without providing a separate member, and good NVH characteristics (noise vibration harshness) can be obtained.

In addition, a separate joint for reinforcement is not required, and a double node is formed by simply overlapping and welding the joint end of the front header onto the extension of the front pillar reinforcement, so the joint work is simple. It will be

Further, by improving the rigidity of the joint portion by forming such a double node, it is possible to satisfy the predetermined vehicle body strength standard even if the cross-sectional areas of the front pillar and the front header are smaller than those of the conventional one. Therefore, there is also an advantage that a vehicle body having a large window area can be designed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, in a corner portion A on the front left side of the vehicle body of the roof panel 2 of the automobile 1, a front pillar 4 which constitutes a side frame of the windshield 3 and extends to a side edge of the roof panel 2, The front header 5 forming the upper frame of the windshield is joined in a three-pronged shape.

FIG. 1 is a perspective view showing the structure of the corner portion A embodying the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG.
The figure is an exploded perspective view of FIG.

Note that, in the figure, the spots marked with X are spot welding points. Further, in FIG. 1, an auxiliary line is drawn from the end of each member, and "stop" is added to the end of the reference numeral given to the corresponding member to clarify the end position of each member. Further, FIG. 2 is drawn such that there is a slight gap between each member at the joint portion, which facilitates the understanding of the structure.

The front pillar 4 has a closed cross section except for a part, which includes a front pillar outer 6 and a front pillar inner 7, and a front pillar reinforcement force is provided between the front pillar outer 6 and the front pillar inner 7. 8 are sandwiched. The front pillar reinforcement 8 is formed with an extension 9 extending toward the front header 5, and an end portion of the extension 9 on the front header 5 side has a front edge and a rear edge (front and rear of the vehicle body). Between the pair of flanges 9a, 9a formed in the vehicle width direction and extending in the vehicle width direction.
A ship bottom-shaped recess 9b provided with 9c is formed.

On the other hand, at the joint end of the front header 5, between the pair of flanges 5a, 5a formed in the front and rear edges of the front pillar reinforcement 8 and extending in the vehicle width direction so as to correspond to the extension 9 of the front pillar reinforcement 8. On the outer side in the vehicle width direction, the slope 5c
Is formed in the shape of a ship bottom, leaving a substantially flat end 10. The joining end of this front header 5 is
The front pillar reinforcement 8 has such a size that it can be fitted into the extension portion 9 from above, and when this fitting is performed, the bottom plates 5d, 9d of the recesses 5b, 9b and the flanges
5a, 5a and 9a, 9a are configured to be in close contact with each other.

Further, the front pillar outer 6 is formed with a relatively flat and relatively short projecting edge portion 11 projecting inward in the vehicle width direction so as to correspond to the extension portion 9 of the front pillar reinforcement 8. Further, the front pillar inner 7 is formed with a protrusion 12 that protrudes inward in the vehicle width direction corresponding to the extension 9 of the front pillar reinforcement 8. A recess 12b having no rising slope is formed between a pair of flanges 12a, 12a formed at the edge and the rear edge and extending in the vehicle width direction. The protrusion 12 is an extension of the front pillar reinforcement 8. The portion 9 has a size that can be fitted from above, and when this fitting is performed, the bottom plates 9d and 12d of the recesses 9b and 12b and the flanges 9a, 9a and 12a, 12a are brought into close contact with each other. Is configured.

The joint end portion of the front header 5, the projecting edge portion 11 of the front pillar outer 6, the projecting portion 12 of the front pillar inner 7, and the extension portion 9 of the front pillar reinforcement 8 configured in this manner are described below. It is joined and integrated. That is, the protrusion 12 of the front pillar inner 7 is a state in which the extension 9 of the front pillar reinforcement 8 is protruded inward in the vehicle width direction from its tip,
In addition, it is joined to the lower surface of the extension portion 9 in a fitted state. Further, the projecting edge portion 11 of the front pillar outer 6 is joined to the upper surface of the flat portion of the extension portion 9 of the front pillar reinforcement 8, and the front header 5
The flat ends 10 of are joined together. Further, the tip of the extension 9 of the front pillar reinforcement 8 projecting inward in the vehicle width direction from the tip of the projection 12 of the front pillar inner 7 is joined to the lower surface of the front header 5 in a fitted state. ing. By this joining, the extension portion 9 of the front header 5 and the front pillar reinforcement 8 is
Means that the two recessed slopes 5b, 9b are overlapped and joined together with the two rising slopes 5c, 9c kept at a predetermined distance in the vehicle width direction, and are joined by the two rising slopes 5c, 9c. A double node will be formed in the part. This double node can significantly improve the rigidity of the joint. Further, according to such a configuration, when the front header 5 is joined to the front pillar 4,
Since it suffices to place the joint end portion of the front header 5 on the extension portion 9 of the front pillar reinforcement 8, the welding work can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of the main part of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is an exploded perspective view of FIG. FIG. 4 is a perspective view of an automobile embodying the present invention. 4 …… Front pillar 5 …… Front header 6 …… Front pillar outer 7 …… Front pillar inner 8 …… Front pillar reinforcement 9 …… Extension part 5b, 7b, 9b …… Concave part 5c, 9c …… Rise Slope

Claims (1)

[Scope of utility model registration request] 1. A joining portion in which both ends of a front header extending along the upper edge of the windshield in the vehicle width direction are joined to a front pillar in a three-pronged shape, and the joining end portion of the front header to the front pillar is formed. On the outside in the vehicle width direction, a ship bottom-shaped recess having a rising slope is formed, and in the front pillar reinforcement that is sandwiched between the front pillar outer and the front pillar inner, the front header An extension portion extending toward the front side is formed, and a vessel bottom-like recessed portion having a rising slope is formed on the outer side in the vehicle width direction on the extension portion, and the joint end portion of the front header and the front pillar are formed. The extension portion of the reinforcement is joined by overlapping the concave portions thereof with the two rising slopes being kept at a predetermined distance in the vehicle width direction. As a result, the upper body structure of the vehicle is characterized in that a double node is formed at this joint.