JPH0676068B2 - Connection structure of body frame members - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting various car body frame members of an automobile.

Conventional technology When connecting vehicle body skeleton members in a straight line, such as connecting the front pillar lower and front pillar upper of an automobile or connecting the pillar and roof rail, the structure shown in Fig. 4 and 5 is exclusively used. Has been done.

In the figure, reference numeral 1 denotes a first skeleton member in which a box cross section is formed by an outer panel 2 and an inner panel 3, and the outer panel 2 is, for example, the inner panel 3 at the end portion on the connection side, in this example, the flange joint portion 4 at the lower end portion. A step portion 5 is formed by extending downward and offsetting.

6 is a second skeleton member in which a box cross section is formed by the outer panel 7 and the inner panel 8 like the first skeleton member 1, and the inner panel 8 is connected to the outer panel 7 at the flange joint portion 9 at the upper end on the connection side. A step portion 10 is formed extending further upward and offset to engage with the step portion 5 of the first skeleton member 1.

Then, the inner panels 3, 8 corresponding to the first skeleton member 1 and the second skeleton member 6 and the outer panels 2, 7 are rapped with each other, and the flanges are tripled at the step portions 5, 10, that is, The flanges 2a, 3a and 8a and the flanges 2a, 7a and 8a are superposed and joined by spot welding.

Problems to be Solved by the Invention Even if the step portions 5 and 10 are triple-polymerized and joined like the flanges 2a, 3a and 8a and the flanges 2a, 7a and 8a, the first skeleton member 1 and Since the two skeleton members 6 are simply lapped corresponding inner panel 3,8 and outer panel 2,7, the connecting portions of these first and second skeleton members 1,6 are
It has been pointed out that it is not possible to sufficiently secure the strength of the joint portions of the step portions 5 and 10 against the bending load acting in the peeling direction indicated by the arrow F in FIG.

Therefore, the present invention provides a connecting structure for a vehicle body frame member capable of increasing the bonding strength of the overlapping connecting portions of the step portions of the first and second frame members without using a special reinforcing member or the like. is there.

Means for Solving the Problems At the connection-side end of either one of the first skeleton member and the second skeleton member, in which the flange joint portion of the connection-side end portion is formed with a step portion that engages with each other, and A flange is sandwiched in the center of the joint portion of the step portions, and an extension portion is partially formed on the inner panel or the outer panel, and the insert piece is bent and formed on the flange extension apart from the step portion at its side edge. On the other hand, a socket portion is formed at a flange joint portion of the other skeleton member corresponding to the insertion piece, and the insertion piece is inserted and joined to the socket portion.

Even if a bending load acts on the connecting portion between the working first skeleton member and the second skeleton member in the peeling direction, due to the engagement of the insertion piece and the socket portion, the load in the peeling direction is sufficiently increased. Oppose.

Embodiment 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 portions as those of the conventional configuration.

1-3, the outer panel 2 and the inner panel 3
The outer panel 2 and the inner panel 3 are attached to the flange joint portion 4 at the lower end portion of the first frame member 1 having a box cross section formed by
The outer panel 7 and the inner panel 8 form a box section, and the inner panel 8 is connected to the flange joint 9 at the upper end of the second skeleton member. Of the first skeleton member 1 and the second skeleton 1 of the first skeleton member 1 and the skeleton 10 of the first skeleton member 1. The inner panel 3 and 8 corresponding to the member 6 and the outer panels 2 and 7 are rapped to form the step 5 and
The basic structure is the same as the above-mentioned conventional one in that the flanges 2a, 3a, 8a and the flanges 2a, 7a, 8a are superposed at 10 and joined by spot welding.

Here, an inner panel or an outer panel in which the flange is sandwiched in the center at the connection side end of either one of the first skeleton member 1 and the second skeleton member 6 and at the joint portion between the step portions 5 and 10 Partly, for example, an extension portion 11 is formed on one side portion of the inner panel 3 of the first skeleton member 1, and a side wall of the extension portion 11 is separated from the step portion 5 and an insertion piece 12 is provided on the extension of the flange 3a. It is bent and molded. On the other hand, the insertion piece 12 on one side of the second frame member 6
A socket portion 13 is formed on the corresponding flange joint portion 4, and the insert piece 12 is inserted into this socket portion 13, and the flange 7a, the insert piece 12, and the flange 8a are spot-welded and joined together. is there.

Further, in this embodiment, the extension portion 14 and the insertion piece 15 are also formed on the other side portion of the outer panel 7 of the second frame member 6, while
The socket portion 16 is formed on the flange joint portion 4 corresponding to the insertion piece 15 on the other side of the first skeleton member 1, and the insertion piece 15 is inserted into the socket portion 16 to form the flange 2a, Insert 1
5, The flange 3a is spot welded and joined.

According to the above-described structure of the embodiment, even if the bending load acts on the connecting portion between the first skeleton member 1 and the second skeleton member 6 in the peeling direction as shown by an arrow F in FIG. The bending load does not act as a peeling load on the joint between the socket part 13 and the socket part 13 and the joint part between the insert piece 15 and the socket part 16, and these insert pieces 12, 15 and the socket parts 13, 16 The joining can sufficiently counteract this bending load, and thus the joining strength of the connecting portions of the first and second skeleton members 1 and 2 can be further improved.

EFFECTS OF THE INVENTION As described above, according to the present invention, the flange extension of the inner panel or the outer panel sandwiched in the center by the engaging portion of the step portions on either one of the first frame member and the second frame member. There is an insert piece on the side edge of the extension partly formed on these inner panels or outer panels, and this insert piece inserts and engages with the socket part formed on the flange joint part of the other frame member. Since they are joined together, the joining area is not only expanded, but even if a bending load acts on the connecting portion of these first and second skeleton members in the peeling direction,
The joint between the insertion piece and the socket does not act as a peeling load, and therefore the bending load can be sufficiently counteracted by the connection between the insertion piece and the socket. The joint strength of the connecting portion can be further increased. Further, since a dedicated reinforcing member is not used, there is practically a great effect that the number of assembling work and the number of parts management are not increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a side view, FIG. 4 is an exploded perspective view showing a conventional structure, and FIG. It is a figure. 1 ... First frame member, 2 ... Outer panel, 2a ... Flange, 3 ... Inner panel, 3a ... Flange, 4 ... Flange joint part, 5 ... Step part, 6 ... Second frame member, 7 ...
… Outer panel, 7a …… Flange, 8 …… Inner panel, 8a …… Flange, 9 …… Flange joint part, 10 …… Step part, 11,14 …… Extended part, 12,15 …… Insert piece, 13 , 16 …… Socket section.

Claims (1)

[Claims] 1. An inner panel and an outer panel are offset from each other at flange joints of respective connecting side ends of a first skeleton member and a second skeleton member, each of which has a box cross section formed by an inner panel and an outer panel. In the structure in which a step portion to be joined is formed, the inner panel and the outer panel corresponding to each of the first and second skeleton members are lapped, and the flange is triplely overlapped and joined at the step portion,
At the connection side end of either the skeleton member or the second skeleton member,
And, the flange is sandwiched in the center at the joint portion of the step portions, an extension portion is partially formed on the inner panel or the outer panel, and the side edge thereof is separated from the step portion, and the insertion piece is provided on the flange extension. While bending, forming a socket portion on the flange joint portion corresponding to the insertion piece of the other frame member,
A connecting portion structure of a vehicle body skeletal member, characterized in that an insertion piece is inserted and joined to the socket portion.