JPH0532386Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to the structure of an automobile body, and particularly to the structure of a connecting portion between a side sill disposed on both sides of the vehicle body and a pillar connected to the side sill.

(Prior Art) Generally, in a passenger car, an outer panel B and an inner panel C are connected with a reinforcement A sandwiched between them, as disclosed in, for example, Japanese Utility Model Application Publication No. 146474/1983, and as schematically shown in FIG. to form a side sill D having two spaces with a closed cross section, and the side sill D is disposed on both sides of the vehicle body, while the inner panel E and the outer panel F form a front pillar G with a closed cross section. Then, the lower end of the pillar G is placed on the upper surface of the front end of the side sill D, and the abutted portions are welded to connect the two.

(Problem to be solved by the invention) By the way, in the above vehicle body structure, since only the abutting portions of the side sill D and the pillar G are welded, the bonding strength between the side sill D and the pillar G is weak. In the structure described above, it is necessary to perform reinforcement such as separately assembling a reinforcement at the joining site between the side sill D and the pillar G, which causes problems such as an increase in the number of parts and the number of assembly steps.

This invention was developed in view of the above circumstances.
The purpose is to provide a vehicle body structure that can sufficiently increase the rigidity of the joint portion between the side sill and the pillar without using a separate reinforcing member such as reinforcement.

(Means for Solving the Problems) Therefore, the present invention has been proposed at one end in the length direction of a side sill in which an outer panel and an inner panel are sandwiched between the reinforcement and two independent closed-section spaces are provided. , in an automobile body structure in which a lower end of a pillar formed with a closed cross section is connected to an inner panel and an outer panel, one end in the length direction of the inner panel and reinforcement constituting the side sill is extended upward; Forming a connecting frame portion having a closed cross section with these extension portions, and connecting the upper end of the connecting frame portion to the lower end portion of the inner panel of the pillar,
It is characterized in that both sides of the connecting frame portion are connected to the outer panel of the pillar.

(Function) According to the present invention, the lower end portion of the pillar has a structure including two independent closed spaces through the interposition of the connecting frame portion, and the connecting frame portion extends integrally from the side sill. This has made it possible to ensure not only the rigidity of the lower end of the pillar but also the bonding strength between the pillar and the side sill.

(Example) The vehicle body structure according to the present invention will be described below according to an example shown in the drawings.

FIG. 5 shows a two-box type passenger car viewed from the side. In the figure, 1 is a side door, 2 is a side sill disposed on both sides of the body and below the side door 1, and 3 is a side sill of the side sill 2. In the embodiment shown in the figure, which shows a front pillar standing upright from the front end, the present invention is applied to a joint portion between the side sill 2 and the front pillar 3.

The side sill 2 has a reinforcement 21
The outer panel 22 and the inner panel 23 are formed into a cylindrical shape. Specifically, as shown in FIG. A first closed space S1 having a closed cross section is formed between the reinforcement 21 and the outer panel 22, and a first closed space S1 is formed between the reinforcement 21 and the inner panel 23. are provided with independent second closed spaces S2 each having a closed cross section.

Further, the front pillar 3 has an outer panel 3.
Both ends of the inner panel 1 and the inner panel 32 are joined by spot welding to form a rectangular tube shape.

In the figure, 5 indicates a floor panel, and 6 indicates a center pillar.

In the above configuration, in the embodiment shown in the figures, the lower end of the inner panel 32 in the front pillar 3 is located at a position higher than the lower end of the outer panel 31 by a predetermined distance, and the lower end of the outer panel 31 and the inner panel 32 are A predetermined step L is provided between the lower end and the lower end.

On the other hand, the front ends of the inner panel 23 and the reinforcement 21 in the side sill 2 are curvedly extended upward, and both extension wall portions 23a, 2
A connecting frame portion 4 is provided with a third closed space S3 having a triangular longitudinal section and continuous with the second closed space S2 by 1a.

Then, the upper end of the connecting frame portion 4 is overlapped with the outer surface of the lower end portion of the inner panel 32 of the pillar 3, and the connecting frame portion 4 and the inner panel 32 are joined by welding at the overlapping portion, and the connecting Welding flanges 41 provided on both sides of the frame portion 4 are connected to the outer panel 31 of the pillar 3.
Both welding flanges 41 and 33 are joined by spot welding so as to butt against a welding flange 33 provided at the base.

In this way, two independent closed spaces are provided at the lower end of the pillar 3 through the interposition of the connecting frame section 4, and one of the closed spaces 3 is connected to the second closed space S2 of the side sill 2.
Since it is continuous with the pillar 3, not only the rigidity of the lower end of the pillar 3 but also the bonding strength between the pillar 3 and the side sill 2 can be obtained sufficiently.

In the above embodiments, the present invention was applied to the connecting portion between the side sill 2 and the front pillar 3, but the present invention may also be applied to the connecting portion between the center pillar 6 and the side sill 2.

(Effect of the invention) As described above, the present invention has an inner panel at one end in the length direction of the side sill, which has two independent closed-section spaces by connecting the outer panel and the inner panel with the reinforcement in between. In an automobile body structure in which a lower end of a pillar formed in a closed cross section is connected to a pillar and an outer panel, one longitudinal end of the inner panel and reinforcement constituting the side sill is extended upward, and both of the inner panel and the reinforcement are extended upwardly. forming a connecting frame portion with a closed cross section at the portion, and connecting the upper end of the connecting frame portion to the lower end portion of the inner panel of the pillar;
By joining both sides of the connecting frame portion to the outer panel of the pillar, the lower end portion of the pillar can be separated into two independent parts through the interposition of the connecting frame portion.
Since the structure has a closed space, and the connecting frame portion is integrally formed with the side sill, not only the rigidity of the lower end of the pillar but also the bonding strength between the pillar and the side sill can be ensured sufficiently. It was finally possible to do so.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing an embodiment of the vehicle body structure according to the present invention, FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a sectional view taken along the line of FIG. 2 is a sectional view taken along the line in FIG. 2, FIG. 5 is a schematic side view of an automobile employing the vehicle body structure according to the present invention, and FIG. 6 is a sectional view of essential parts showing an example of a conventional vehicle body structure. 2... Side sill, 21... Reinforcement, 22... Outer panel, 23... Inner panel, 3... Pillar, 31... Outer panel, 32
...Inner panel, 4...Connection frame section.

Claims (1)

[Scope of utility model registration request] At one end of the side sill in the length direction, the outer panel and the inner panel are combined to sandwich the reinforcement, and two independent closed-section spaces are provided.
In an automobile body structure that connects the lower end of a pillar formed in a closed cross section from an inner panel and an outer panel, one longitudinal end of the inner panel and reinforcement that constitute the side sill is extended upward, and these Both extensions form a connecting frame portion with a closed cross section, and the upper end of the connecting frame portion is connected to the lower end of the inner panel of the pillar, and both sides of the connecting frame portion are connected to the outer panel of the pillar. An automobile body structure characterized by: