JPH0481371A - Closed sectional surface structure member for car body - Google Patents

Abstract

PURPOSE:To improve the strength without incurring the increase of the plate thickness by interposing a reinforcing panel between an outer panel and an inner panel and installing a reinforcing partitioning wall member along the panel joint direction between the reinforcing panel and each panel. CONSTITUTION:In the application for the part of a side sill 2 as closed sectional surface structure member, when a sill outer panel 4 and a sill inner panel 6 are joined in opposed state in the car width direction, joint work is carried out by interposing a shill reinforcement 8 as reinforcing panel between the flange parts 18 installed above and below both panels 4 and 6. Accordingly, the closed sectional surface 10 formed by jointing both panels 4 and 6 is divided into two spaces 12 and 14. A brace shill outer 16A and a brace sill inner 16B as reinforcing partitioning wall member are installed in two spaces 12 and 14, and fixed on the reinforcement 8, shill outer panel 4 and the sill inner panel 6 on the attached flanges 20a, 20a'-20d, 20d'.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a closed cross-section structural member of an automobile body, such as a side sill or a pillar.

(Prior Art) An example of a conventional closed cross-section structural member is shown in FIGS. 9 and 10. The portion having a closed cross section in this conventional example is the side sill 2 portion. The sill outer panel 4 and the sill inner panel 6 are joined via a sill reinforcement 8, which is a reinforcing panel, to form a closed cross section 10. The closed section is divided into two spaces 12 and 14 by the sill reinforcement 8, and a reinforcing partition wall material 16 is attached to one of the spaces 12 so as to close this space 12.

Furthermore, in another conventional example (FIG. 11), no sill reinforcement is provided, and only the reinforcing partition wall material 16 is attached within the closed section 10 (Japanese Patent Laid-Open No. 63-9747
3).

(Problems to be Solved by the Invention) In the prior art shown in FIG. It is necessary to further reinforce the space 14 against the human force of the load in the event of a collision. Furthermore, the conventional example shown in FIG. 11 is not provided with a sill reinforcement, which is a reinforcing panel, and it is necessary to further strengthen the panel against bending due to loads applied in the vertical direction.

However, the reinforcement according to the conventional structure has to rely on increasing the thickness of the sill outer panel 4, the sill inner panel 6, etc., which results in an increase in weight and brings about new problems such as reduced fuel efficiency. Furthermore, as the plate thickness increases, the cross-sectional area also tends to increase, which may have an adverse effect on the limited space inside the vehicle.

The present invention was made to solve the above problems.
An object of the present invention is to obtain a closed cross-section structure member for a vehicle body that can improve strength without increasing the plate thickness.

[Configuration of the Invention (Means for Solving the Problems) The present invention has been made to achieve the above objects,
In a vehicle body closed section structure member in which an outer panel and an inner panel are joined to each other to form a closed section, the joining of both panels is performed through a reinforcing panel in between, and the reinforcing panel and the both panels are joined together. The first and second reinforcing partition wall materials are attached along the joining direction of both panels, and the first and second reinforcing partition wall materials are installed so as to face each other so as to sandwich the reinforcing panel. This is a vehicle body closed cross-section structural member.

(Function) Since the first and second reinforcing partition wall materials are installed on both sides of the reinforcing panel, the reinforcing panel is maintained within its original plane by both reinforcing partition wall materials, suppressing out-of-plane deformation, and resisting bending. It can exhibit sufficient strength. Also, the first
Since the second reinforcing partition wall material is installed on both sides, that is, in the two spaces with a closed cross section, deformation of the spaces can be prevented and the structure will be more resistant to torsion. In addition, since the first and second reinforcing partition wall materials are mounted to face each other so as to sandwich the reinforcing panel, the stress vector flows smoothly and the strength can be further increased.

(Examples) Hereinafter, three examples of the present invention will be described with reference to the drawings. Each of the embodiments was implemented in a side sill 2 (FIG. 10) as a closed cross-section structural member.

First, a first embodiment will be explained with reference to FIGS. 1 to 3.

Figure 1 is an exploded perspective view of the side sill part, and Figure 2 is an exploded perspective view of the side sill part.
3 is a horizontal sectional view of FIG. 1. FIG.

The sill outer panel 4, which is an outer panel, and the sill inner panel 6, which is an inner panel, are elongated along the longitudinal direction of the automobile body, and are joined to each other so as to face each other in the vehicle width direction. This joining is performed by flange portions 18 provided on the upper and lower sides of both panels 4.6, with a sill reinforcement 8, which is a reinforcing panel, in between. Therefore, the closed section 1 formed by joining the image panels 4.6
0 is divided into two spaces 12. by sill reinforcement 8.
Divided into 14 parts. A place sill outer 16A and a place sill inner 16B, which are first and second reinforcing partition materials, are attached to these two spaces 12,14. These place sill outer 16A and place sill inner 16B have abutment flanges 20a, 20 on the top, bottom, left and right of the partition plates 16a, 16b as shown in FIG. 2(b) and FIG. 2(C).
a20b, 20b'', 20c, 20cm, 20d.

20d'. This place sill outer 16A
The place sill inner 16B is installed so as to fill the respective spaces 12, 14 when viewed from the longitudinal direction of the reinforcement 8 (Fig. 2 (a)), and each of the abutment 7 langes 20a, 20a--20d, It is fixed to the reinforcement 8, the sill outer panel 4, and the sill inner panel 6 at 20d-. This fixation is carried out by spot welding, seam welding, adhesion, screw fixing, or the like. Incidentally, in the embodiment, spot welding and screw fixing are performed, and in the figure, the V mark represents a welding location, and the mark represents a screw fastening location. The places 16A and 16B are installed at the same position in the longitudinal direction of the reinforcement 8, the sill outer panel 4, and the sill inner panel 6, and are positioned opposite each other so as to sandwich the reinforcement 8. (See Figure 3). Note that a working hole 22 for welding work is formed in the reinforcement 8.

In addition, it is preferable that the mounting position be the center pillar second cross member of the side sill 2, or each corresponding position on the front end of the rear floor, from the viewpoint of smoothing the flow of the stress vector.

When installing, place one place 1 as shown in Figure 1.
6A to the sill outer panel 4, and press the other press 16B to the sill outer panel 4 before installing the sill inner panel 6.
Fix it together with Reinforce 8 on the A side. When fixing the places 16A and 16B via the reinforcement 8, use the working hole 22 and attach the abutment flanges 20c and 20cm.
j: Place and spot weld. After the sill outer panel 4 and the sill inner panel 6 are joined via the reinforcement 8 as shown in FIG. 3, the place 16B is screwed to the sill inner panel 6. In addition, both places 16A
, 16B are fixed in advance to the sill outer panel 4 and the sill inner panel 6 by spot welding, etc., and after the sill outer panel 4 and the sill inner panel 6 are joined, spot welding of both abutment flanges 20c and 20 cm is performed from the working hole. You can also do it like this. In this case, the working hole will also be provided on the sill inner panel 6 side.

According to the above embodiment, the sill reinforcement 8 is supported by the place sill outer 4 and the place sill inner 6 from both sides in the lateral direction of the vehicle, so that out-of-plane deformation can be suppressed and the strength against bending can be increased. . moreover,
Space 1 divided into two by sill reinforcement 8
2. Since the place sill outer 16A and the place sill inner 16B are attached to each of 14, space collapse,
For example, immersion in the event of a side collision can be sufficiently prevented. Further, by attaching the place sill outer 16A and the place sill inner 16B at the same point in the longitudinal direction, the flow of the stress vector at this attachment position can be improved and the strength can be increased. Place sill outer 16A and place sill inner 16B, which are such first and second reinforcing partition materials,
By providing it at a position where the center pillar 3 is connected to the side sill 2, it is possible to increase the strength against the lateral movement of the center pillar 3 when the door is closed in a pillarless hardtop vehicle. There is no need to increase the thickness of the sill outer panel 4, the sill inner panel 6, etc., and an increase in weight and size can be suppressed.

A second embodiment of the invention is shown in FIGS. 4 and 5.

In this embodiment, the place sill outer 16A and the place sill inner 16B, which are the first and second reinforcing partition wall materials, are box-shaped with no bottom, and the edges have abutting flanges 20c facing each other between the two places. Two of each are provided, and this abutting flange 20c is brought into contact with the reinforcement 8,
Spot welded. A work hole 22 for welding work is formed in the reinforcement 8, the place sill outer 16A, and the place sill inner 16B. By having such a box shape, the rigidity of the place sill outer 16A and the place sill inner 16B themselves becomes high, and the strength can be further increased.

Other structural functions are substantially the same as in the first embodiment.

A third embodiment of the present invention is shown in FIGS. 6-8.

Figure 6 shows a place sill outer 16A which is a reinforcing partition wall material.
FIG. 3 is an enlarged perspective view of the place sill inner 16B. 7 is an exploded perspective view of FIG. 6, and FIG. 8 is a horizontal sectional view of FIG. 6.

The shapes of the place sill outer 16A and place sill inner 16B of this embodiment are basically as shown in FIGS. 2(b) and 2(c).
). In addition, Rainforce 8
Welding abutment flange 20c, 20cm facing toward
They each have two copies. One place sill outer 16
At A, a penetrating protrusion 24 is formed between the two abutment flanges 20c, and protrudes in a direction perpendicular to the abutment flange 20c, that is, toward the sill reinforcement 8. A through hole 26 is formed in the sill reinforcement 8 so that the penetration protrusion 24 can pass therethrough. Other structural functions are substantially the same as in the first embodiment.

As in this embodiment, the place sill outer 16A and the place sill inner 16B are connected by the piercing protrusion 24 passing through the through hole 26, which is equivalent to the case where an integral place is provided in the side sill 2. Strength can be further increased.

Note that each place can also be configured to completely close the space of the closed cross-sectional structure. Further, the present invention can also be applied to other closed cross-section structural members, such as pillar roof rails.

[Effects of the Invention] As explained above, according to the closed cross-section structural member of the present invention, by attaching the first and second reinforcing partition materials between the reinforcing panel and the outer panel and the inner panel, two parts of the closed cross section are Both spaces can be prevented from deforming. Also,
Since both reinforcing partition wall materials are attached in positions facing each other, stress flows smoothly and the strength against torsion can be improved. Furthermore, since the reinforcing panel is supported from both sides by the reinforcing partition wall material, out-of-plane deformation can be suppressed and the strength against bending can be further improved. Therefore, it is possible to reduce the thickness of each panel, thereby reducing nH and downsizing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG.
) is a longitudinal sectional view of FIG. 1, FIGS. 2(b) and (C) are perspective views of the place, FIG. 3 is a horizontal sectional view of FIG. 1, and FIG. 4 shows a second embodiment of the present invention. FIG. 5 is a horizontal sectional view of FIG. 4, FIG. 6 is a perspective view of main parts showing the third embodiment of the present invention, and FIG. Figure 8 is the 6th
9 is a partial perspective view of a vehicle body according to the conventional example, FIG. 10 is a sectional view taken along the line X-X in FIG. 9, and FIG. 11 is a perspective view of another conventional example. It is. 4... Sill outer panel (outer panel) 6...
・Sill inner panel (inner panel) 8...Reinforce (reinforcement panel) 16A...Place sill outer (reinforced partition material) 16B...Place sill inner (
Reinforcement partition wall material) Agent Patent attorney Hide Miyoshi Kazu20b Figure 2 (b) Figure 2 (C) Figure

Claims (2)

[Claims] (1) In a vehicle body closed section structural member in which an outer panel and an inner panel are joined to each other to form a closed section,
The two panels are joined through a reinforcing panel in between, and between this reinforcing panel and both panels there are first and second panels.
Reinforced partition wall material is installed along the joining direction of both panels,
The vehicle body closed cross section structural member is characterized in that the first and second reinforcing partition wall materials are mounted so as to face each other so as to sandwich the reinforcing panel. (2) A penetrating protrusion is formed on at least one of the first and second reinforcing partition materials, and the penetrating protrusion passes through a hole drilled in the reinforcing panel and is coupled to the other reinforcing partition material. A vehicle body closed cross-section structural member according to claim (1).