JPH0127500Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a vehicle body structure, such as the structure of a closed cross-section member such as a side sill disposed at the bottom of a vehicle door.

(Prior Art) The closed cross-section members such as the side sills of vehicles described above may or may not need to be reinforced depending on the type of vehicle.

When a reinforcement is inserted between the outer panel and the inner panel forming a closed cross-section member as the above-mentioned reinforcing means and these three panels are joined, the dimension in the thickness direction is equal to the thickness of the reinforcement. When assembling a reinforced closed cross-section member and an unreinforced closed cross-section member, the seal covering the flange of the closed cross-section member, the connecting member connected to this closed cross-section member, or the structure of the door may be different from the closed cross-section member. It was necessary to configure the side sills, roof rails, and pillars for each type of vehicle, and there was a problem in that it was not possible to standardize the parts used.

Furthermore, as a conventional means for forming air vent holes by providing embossed holes in a part of the upper joint flange of the outer panel forming the side sill, there is a structure described in Japanese Utility Model Application No. 56-64875, for example. had no intention of reinforcing the side sills.

(Purpose of the invention) In order to standardize parts, this invention was developed so that the dimension in the thickness direction of the closed cross-section member does not change even if a reinforcement is inserted, and that the joint strength is sufficient even when no reinforcement is used. The purpose is to provide a vehicle body structure that can ensure the following.

(Structure of the invention) This invention is provided with a closed cross-section member formed by joining joining flange portions of one side and the other side formed on an outer panel and an inner panel, respectively,
The joint flange portions of at least one of the outer panel and the inner panel are bulged out in plurality at predetermined intervals to form a joining gap between the joint flange portion of the other panel, and the outer panel and the inner panel are They are joined at each of the joining gaps, and each of the joining gaps has flange portions interposed inside the closed cross-section member and formed at predetermined intervals, and the portion between the flange portions has a closed cross section. The vehicle body structure is characterized in that the flange portion of the reinforcement, which is formed narrower than the closed cross-sectional space of the member, is inserted and joined.

(Effect of the invention) According to this invention, a plurality of joining gaps into which the flange portion of the reinforcement is inserted are formed at predetermined intervals, and these joining gaps are connected to the joining flange of at least one of the outer panel and the inner panel. Because the section is bulged, the dimensions in the thickness direction of the closed cross-section member are the same whether or not reinforcement is inserted, and the shape is the same. Sometimes common parts can be used, reducing costs.
Further, the reinforcing structure of the closed cross-section member is simple, and the reinforcement can be joined at the same time as the outer panel and the inner panel, so the joining work is simple.

In addition, when reinforcement is not used, the above-mentioned joining gap remains open, but since the outer panel and the inner panel are joined in the joining gap, sufficient bonding strength between these two panels is achieved. can be ensured.

(Example) An example of this invention will be described in detail below based on the drawings.

The drawing shows a side sill structure as an example of a vehicle body structure, and in FIG. 1, 1 is a fender front panel, 2 is a front pillar, 3 is a roof side rail, 4 is a fender rear panel, and 5 is a closed section member. It's a side sill.

As shown in FIGS. 2 to 4, the above-mentioned side sill 5 is formed into a closed cross section by an outer panel 6 and an inner panel 7, and a reinforcement 8 is interposed inside the closed cross section.

The above-mentioned outer panel 6 is formed in a substantially U-shaped cross section with a stepped portion formed on the upper side and a middle portion bulging outward, and has a substantially vertical joining flange portion at the upper edge and lower edge. 9, 9 are formed, and furthermore, a plurality of bulging portions 9a . . . bulging outward at predetermined intervals are integrally formed on these joining flange portions 9, 9,
The amount of bulge of each of these bulges 9a is set to correspond to the thickness of the reinforcement 8 described above.

The aforementioned reinforcement 8 is formed into a flat plate shape, and has flange portions 11 arranged on the upper and lower edges thereof facing the plurality of bulging portions 9a of the aforementioned outer panel 6 and disposed on these bulging portions 9a. It forms...

Also, the vertical width between the front and rear flange parts 11, 11 of the reinforcement 8 mentioned above is the side sill 5.
The width of the flange portion 11 is narrower than the vertical distance of the closed cross section, and the front-to-back width of the flange portion 11 is narrower than the front-to-back width of the joining gap 10, which will be described later.

The above-mentioned inner panel 7 is formed to have a substantially L-shaped cross section, and has substantially vertical joining flanges 12, 12 formed at the upper and lower edges.

In the side sill 5 configured in this manner, the flange portions 11 of the reinforcement 8 are arranged relative to the plurality of bulges 9a formed integrally with the joint flange portions 9, 9 of the outer panel 6, and the flange portions 11 of the reinforcement 8 are arranged relative to the plurality of bulges 9a formed integrally with the joint flange portions 9 of the outer panel 6. The joint flange parts 12, 12 are overlapped with the joint flange parts 9, 9 of the outer panel 6, and an overlapping part 5a where each flange part 9, 11, 12 overlaps, and an overlapping part where two of each flange part 9, 12 overlap. 5a are joined by spot welding 13.

That is, the joining gap 1 formed between the bulging parts 9a of the joining flange parts 9, 9 of the outer panel 6 and the joining flange parts 12, 12 of the inner panel 7
0... flange part 11 of reinforcement 8
... has been inserted and joined.

The strength of the side sill 5 formed in this way is obtained by interposing the reinforcement 8.

In addition, when the reinforcement 8 is not used, the above-mentioned joining gap 10 remains open, and each joining flange part 9, 9, 12, 12 of the outer panel 6 and the inner panel 7 is The joining will be performed only between the joining gaps 10 and 10, but in this case, the thickness of the side sill 5 will not change in any way and will be the same as when the reinforcement 8 is inserted.
When assembling, various parts can be shared.

In addition, in the above-mentioned embodiment, a plurality of bonding gaps 1
Although the bulging portions 9a for forming 0... are integrally formed on the outer panel 6, they may be integrally formed on the inner panel 7, or may be integrally formed on both 6 and 7.

Further, in the above embodiment, the closed cross section member was explained as a side sill, but this closed cross section member may be a roof side rail located on the side of the roof panel of the vehicle body, a pillar member such as a front pillar, a center pillar, a rear pillar, or other pillar members. It may be a closed cross-section member.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Figure 1 being a schematic side view of the vehicle body, Figure 2 being a perspective view of the side sill,
3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a sectional view taken along the line BB in FIG. 5...Side sill, 5a...Overlapping part, 6...Outer panel, 7...Inner panel, 8...Reinforcement, 9, 12...Joint flange part,
9a...Bulging portion, 10...Gap for joining, 11...
flange part.

Claims (1)

[Claims for Utility Model Registration] A closed cross-section member is provided in which joint flange portions of one side and the other side formed on an outer panel and an inner panel are joined, and at least one of the outer panel and the inner panel is joined. A plurality of joining flange portions of the panel are bulged out at predetermined intervals to form joining gaps with the joining flange portions of the other panel, and the outer panel and the inner panel are joined at each of the joining gaps. In addition, the joining gap has flange portions interposed inside the closed cross-section member and formed at predetermined intervals, and the portion between the flange portions is formed to be narrower than the closed cross-section space of the closed cross-section member. A vehicle body structure, wherein the flange portion of the reinforcement is inserted and joined.