JPH0431893Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a pillar support structure for an automobile.

Prior Art In the case of automobiles, for example, as shown in FIGS. 6 to 8, a floor panel 2 to which a side member 1 is attached is used.
A structure is known in which a side sill 3 having a closed cross-sectional structure formed by an inner sill 3a and an outer sill 3b is attached to the side of the sill, and a center pillar 4 is attached to this side sill 3. In addition, 5 is a cross member,
6 indicates a seat mount bracket on the outer side of the rear of the front seat (this similar structure is, for example,
25663).

Problems to be solved by the invention In the above structure, in order to ensure sufficient joint strength between the center pillar 4 and the side sill 3, it is necessary to enlarge the closed cross section of the side sill 3 or the center pillar 4, In addition, it is necessary to increase the thickness of the side sills 3 and center pillar 4 to cope with this problem, and the cabin space becomes narrower.
It has been pointed out that the weight of the vehicle increases.

Particularly, in the case of a structure in which the center pillar 4 is cantilever-supported by the side sills 3, such as the four-door hardtop vehicle shown in FIG. 8, the center pillar 4 may fall sideways in the vehicle width direction. The problem is that it is easy.

Therefore, this invention provides a pillar support structure for an automobile that can increase the support rigidity of the pillar by effectively utilizing the side members and seat mount brackets attached to the floor panel.

Measures to solve the problem The lower part of the pillar is joined to the side sill that is connected to the side of the floor panel, while the lower part of the pillar is wrapped to the top surface of the floor panel and the attachment part of the side member that is joined to the back of the floor panel. A seat mount bracket extending toward the side sill is joined, and a pillar brace is joined from the inner surface of the pillar to the inner surface of the side sill and the upper surface of the side part of the floor panel, and the mounting part of this pillar brace is attached to the seat mount bracket. A wrap is placed on the mounting part.

Function When the pillar receives a force in the vehicle width direction, this force is distributed to the side members via the pillar brace and the seat mount bracket, preventing the pillar from swinging in the vehicle width direction.

Embodiment Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings, in which the same parts as those of the conventional structure are denoted by the same reference numerals.

Figures 1 to 5 show the floor panel 2 applied to a four-door hardtop vehicle, in which the floor panel 2 is formed low and offset toward the inside of the vehicle by a stepped portion 2a provided on the outside of the vehicle, thereby expanding the interior space of the vehicle. I am trying to do this.

A side sill 3 is attached to the side end of the floor panel 2, and the side sill 3 is formed into a closed cross-sectional structure by an inner sill 3a and an outer sill 3b.
The lower side of a lock pillar 4A, which is a pillar formed in a closed cross-sectional structure by a pillar inner 4a and a pillar outer 4b, is joined to the upper surface of the sill outer 3b.

On the other hand, a side member 1 having a hat-shaped cross section and forming a closed cross section with the floor panel 2 along the longitudinal direction of the vehicle body is joined to the back surface of the floor panel 2 on the outside of the vehicle.

Further, on the upper surface of the floor panel 2, a mounting flange 6a of a seat mount bracket 6A, which is arranged to wrap around the mounting flange 1a serving as the mounting portion of the side member 1 and extends toward the side sill 3, is joined across the stepped portion 2a. be.

A pillar brace is provided at a portion extending from approximately the vertical center of the pillar inner 4a forming the inner surface of the lock pillar 4A to the stepped portion 2a of the floor panel 2 via the sill inner 3a forming the inner surface of the side sill 3. A lock pillar brace 7 is joined, and a mounting flange 7a serving as a mounting portion of the lock pillar brace 7 is wrapped and joined to a mounting flange 6a serving as a mounting portion of the seat mount bracket 6A.

Note that 6b indicates a mounting hole for the seat mount bracket 6A, and 7b indicates a rib portion of the lock pillar brace 7.

According to the structure of the above embodiment, when a force is applied to the lock pillar 4A in the vehicle width direction as shown by the arrow, this force is transmitted to the vehicle body frame member through the lock pillar brace 7 and the seat mount bracket 6A. Since the load is shared between the side members 1, the lock pillar 4A is prevented from falling sideways.

Therefore, by increasing the closed cross section of the lock pillar 4A, by increasing the size of the pillar inner 4a and the pillar outer 4.
Since there is no need to increase the thickness of the plate b, the lock pillar 4A can be made smaller and a larger interior space can be secured.

In addition, in this embodiment, a part of the mounting flange 6a of the seat mount bracket 6A is sandwiched between the mounting flange 7a of the lock pillar brace 7 and the floor panel 2, so that the seat mount bracket can be easily mounted in the event of a frontal collision of the vehicle. It can also prevent 6A from floating.

Effects of the invention As described above, according to this invention, it is possible to effectively utilize the seat mount bracket and side members to increase the rigidity of the pillar against vibration in the vehicle width direction. This has a great practical effect in that it is possible to downsize the vehicle and secure a large cabin space.

[Brief explanation of the drawing]

Figures 1 to 5 show one embodiment of this invention.
The figure is a perspective view, Figure 2 is a sectional view taken along the line in Figure 1, Figure 3 is a perspective view showing the arrangement of the side member and seat mount bracket, and Figure 4 is a sectional view taken along the line in Figure 1. , FIG. 5 is a sectional view taken along the line of FIG. 1, and FIG. 6 is a sectional view of the prior art shown in FIG. 7.
7 is a perspective view of the prior art corresponding to FIG. 1, and FIG. 8 is a schematic side view of the automobile. 1... Side member, 1a... Mounting flange (mounting part), 2... Floor panel, 3... Side sill, 3a... Sill inner (inner surface), 4A... Lock pillar (pillar), 4a... Pillar inner (inner side) side), 6A...seat mount bracket,
6a... Mounting flange (mounting part), 7... Pillar brace (lock pillar brace), 7a... Mounting flange (mounting part).

Claims (1)

[Scope of utility model registration request] The lower part of the pillar is connected to the side sill that is connected to the side of the floor panel, while the seat mount bracket is attached to the top surface of the floor panel, which wraps around the attachment part of the side member that is connected to the back of the floor panel and extends toward the side sill. A pillar brace is joined to a portion extending from the inner surface of the pillar to the inner surface of the side sill and the upper surface of the side part of the floor panel, and the mounting portion of this pillar brace is placed to wrap around the mounting portion of the seat mount bracket. Characteristic pillar support structure of automobiles.