JPH0564067U - Joint structure of vehicle body frame members - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the strength and rigidity of the joint between the roof rail and the roof rail connecting portion of the roof rail brace. [Structure] A roof rail reinforcement 3 is sub-assembled to the front roof rail 1. The end portion of the front roof rail 1 in the vehicle width direction is fitted to the roof rail connecting portion 5 of the three-forked roof rail brace 4 in which the roof rail connecting portion 5, the pillar connecting portion 6, and the roof side rail connecting portion 7 are formed. It is joined. A working hole 20 is formed at a position near the joint between the front roof rail 1 and the roof rail connecting portion 5. The working hole 20 is formed in a substantially plane isosceles triangle shape having the edge portion on the joint portion side as a base, and the protrusion height is gradually increased from the joint portion side toward the center side of the front roof rail on the peripheral edge. The formed flange 21 is formed by bending.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a combination structure of vehicle body frame members, in particular, a roof rail which is a roof vehicle width direction frame member, a roof side rail which is a roof front-back direction frame member, and a pillar which is a vehicle body vertical direction frame member. It is related to the structure of the upper trifurcation that is joined.

[0002]

[Prior Art]

 6 to 9 show a conventional structure. Reference numeral 1 is a front roof rail as a roof rail formed in an inverted hat shape in cross section. The front rail rails 3 are joined to the front and rear flange portions of the front roof rail, and these front roof rails are joined. 1 and the roof rail reinforcement 3 form a closed cross section to ensure the required strength and rigidity as a vehicle width direction frame member.

Reference numeral 4 denotes a roof rail brace having an inverted hat-shaped cross section similar to the front roof rail 1. The roof rail brace 4 has a roof rail connecting portion 5, a pillar connecting portion 6, and a roof side rail connecting portion 7. The front roof rail 1 has its end portion in the vehicle width direction fitted to the roof rail connecting portion 5 and joined by spot welding, and the pillar connecting portion 6 has a pillar inner portion 9 A front pillar 8 as a pillar formed in a closed cross section with the pillar outer 10 and a roof side rail 11 formed in a closed cross section with a rail inner 12 and a rail outer 13 are joined to the roof side rail connecting portion 7.

Here, the front roof rail 1 and the roof rail reinforce 3 are sub-assembled into a closed cross section in the same manner as the front pillar 8 and the roof side rail 11, so that the front roof rail 1 end portion in the vehicle width direction. A work hole 15 for inserting a spot gun 17 is provided in the vicinity of the joint with the roof rail connecting part 5, and the spot gun 17 is inserted into the work hole 15 to attach the end of the front roof rail 1 to the roof rail. The connection portion 5 is spot-welded. The working hole 15 is formed in a rectangular shape in accordance with the operation of the spot gun 17, and the flange 16 is formed by bending the upper edge at a constant height to ensure the surface rigidity around the working hole 15. I'm sorry. Reference numeral 14 in the drawing denotes a roof panel. This similar structure is shown, for example, in "New Edition Automotive Engineering Handbook, Vol. 6, pages 1-6 to 1-8", published by the Society of Automotive Engineers of Japan on September 30, 1952.

[0005]

[Problems to be solved by the device]

 A flange 16 is bent and formed on the upper edge of the work hole 15 to obtain a reinforcing effect. The work hole 15 is provided in the front and rear direction in which the work movement space of the spot gun 17 can be sufficiently secured as described above. Since the flange 16 is formed in a rectangular shape with a relatively large opening area and the flange 16 trims the working hole 15 in such a large opening area, there is a limit to the protruding height in molding. Since it cannot be molded high, it is unavoidable that it is disadvantageous in terms of rigidity. Among the joints of the upper three forks where the torsional load of the vehicle body tends to concentrate, this front roof rail 1 and roof rail brace are particularly important. It is difficult to secure the strength of the joint part with 4.

Therefore, the present invention provides a joint structure for a vehicle body skeletal member that has a simple structure and can further enhance the strength and rigidity of the upper three-pronged portion without the need for a dedicated reinforcing member or the like. is there.

[0007]

[Means for Solving the Problems]

 Upper three-pronged structure in which the end of the roof rail in the vehicle width direction is fitted and joined to the roof rail connection part of the three-forked roof rail brace that forms the roof rail connection part, the pillar connection part, and the roof side rail connection part At a position near the joint of the roof rail with the roof rail connecting portion, a working hole whose width in the front-rear direction is narrowed from the joint side toward the center of the roof rail is formed, and a flange is formed at the upper edge of the working hole. Is formed by bending, and the protruding height of the flange is gradually increased from the joint side toward the center side of the roof rail.

[0008]

[Action]

 By narrowing the front-rear direction width of the working hole on the center side of the roof rail, it is possible to set the die-cutting slope at the time of molding on the flange at the upper edge, and to secure a sufficient protrusion height of the flange. By reducing the opening area of the work hole and ensuring the protrusion height of the flange, the surface rigidity around the work hole can be maintained high.

[0009]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings by attaching the same reference numerals to the same parts as those of the conventional structure.

In FIGS. 1 to 5, a front roof rail 1 is formed in an inverted hat shape in cross section, and a roof rail reinforcement 3 is joined to front and rear flanges 2 of the front roof rail 1 and the roof rail reinforcement. The front roof rail 1 has a closed cross section, and the front roof rail 1 has an end portion in the vehicle width direction, which has a roof rail connection portion 5, a pillar connection portion 6, and a roof side rail connection portion 7 and has an inverted cross section. The basic structure is similar to that of the conventional one, such as the fact that the three forked roof rail brace 4 is fitted and joined to the roof rail connecting portion 5.

Here, at a position near the end of the front roof rail 1 in the vehicle width direction near the joint with the roof rail connecting portion 5, a width in the front-rear direction from the joint to the front roof rail center side is formed. A narrow working hole 20 is formed, a flange 21 is bent and formed around the working hole 20, and a protruding height of the flange 21 is gradually increased from the joint side toward the center side of the front roof rail 1. There is.

In the present embodiment, the working hole 20 is formed in a substantially isosceles triangular shape in a plane with the edge portion on the side of the joint portion as the bottom side, and the front and rear edge portions of the working hole 20 are formed. When the flanges 21a and 21a are inclined toward the center of the working hole 20 to provide a drafting gradient at the time of molding, and when the flange 21 is formed simultaneously with the trimming of the working hole 20 by a press die (not shown), The projection heights h of the flanges 21a, 21a at the front and rear edges are sufficiently secured. That is, if the work hole 20 is shaped according to this embodiment, the front-rear width W of the flat surface portion 2a can be increased toward the center side of the front roof rail 1 where the protrusion heights h of the flanges 21a, 21a are required. .. The v and * marks in the figure represent spot junction points.

According to the above-described structure of the embodiment, the front roof rail 1 and the roof rail reinforce 3 are sub-assembled, so that the end portion of the front roof rail 1 in the vehicle width direction and the roof rail connecting portion 5 of the roof rail brace 4 are arranged. At the time of joining with, the spot gun 17 is inserted into the working hole 20 and spot welding is performed. At this time, even if the working hole 20 is formed in a plane substantially isosceles triangle shape as described above. By swinging the spot gun 17 in the front-rear direction as shown in FIG. 5, spot welding is performed on the overlapping portions of the bottom wall portions of the front roof rail 1 and the roof rail connecting portion 5 in the front-rear direction without any trouble. Therefore, the working space of the spot gun 17 can be sufficiently secured.

On the other hand, in addition to the effect of the above-mentioned joining workability, the working hole 20 is formed in a plane substantially isosceles triangular shape having the edge portion on the joining portion side as a base, and the opening area is maximized. The flange 21 is reinforced because the flange 21 is formed such that the protrusion heights of the flanges 21a and 21a at the front and rear edges of the working hole 20 gradually increase toward the center of the front roof rail 1. As a result, the surface rigidity around the working hole 20 can be maintained high, and the strength and rigidity of the entire structure of the upper three-pronged portion can be increased.

Although the working hole 20 is formed in a plane triangular shape in the above embodiment, it may be formed in a plane semicircular shape, a semi-elliptical shape, or a trapezoidal shape.

Although the structure of the upper three-pronged portion at the front of the roof is disclosed in the above-mentioned embodiment, the upper three-pronged portion at the rear of the roof, that is, the connecting portion between the roof side rail 11 and the rear pillars and rear roof rails not shown Of course, it can also be applied to.

[0017]

[Effect of the device]

 As described above, according to the present invention, the working hole for inserting the spot gun of the roof rail, which is joined to the roof rail connecting portion of the roof rail brace, has a width in the front-rear direction from the joint side with the roof rail connecting portion toward the center side of the roof rail. The opening area is made as small as possible by making the width narrower, and the protrusion height of the flange bent at the upper edge of this work hole is directed from the joint side toward the roof rail center side. Since the reinforcing effect is enhanced by gradually increasing the height, the surface rigidity around the work hole can be further increased, and the strength and rigidity of the entire structure of the upper trifurcation can be increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same embodiment.

3 is a sectional view taken along the line AA of FIG.

4 is a cross-sectional perspective view taken along the line BB of FIG.

FIG. 5 is a plan view showing a joint between a front roof rail and a roof rail brace.

FIG. 6 is a perspective view showing a main part of a conventional structure.

7 is a cross-sectional view taken along the line CC of FIG.

FIG. 8 is a cross-sectional view taken along the line DD of FIG.

FIG. 9 is a plan view showing a joint between a conventional front roof rail and a roof rail brace.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Roof rail, 4 ... Roof rail brace, 5 ... Roof rail connecting part, 6 ... Pillar connecting part, 7 ... Roof side rail connecting part, 8 ... Pillar, 11 ... Roof side rail, 14 ... Roof panel, 20 ... Working hole, 21 … Flange.

Claims (1)

[Scope of utility model registration request] 1. A vehicle width direction end portion of a roof rail is fitted and joined to a roof rail connection portion of a three-forked roof rail brace having a roof rail connection portion, a pillar connection portion, and a roof side rail connection portion. In the upper three-pronged structure, a working hole is formed at a position near a joint of the roof rail with a roof rail connecting portion, the working hole having a width that narrows in the front-rear direction from the joint side toward the roof rail center side, and the periphery of the working hole. The flange is bent and formed, and
The joint structure of a vehicle body frame member, wherein the protrusion height of the flange is gradually increased from the joint side toward the roof rail center side.