JPS6344302Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of the Invention) The present invention relates to a jack support structure for an automobile.

(Technical Background of the Idea) For example, when replacing a rear wheel of a car, the top surface of the jack is brought into contact with the bottom surface of the A portion of the side sill shown in FIG. 1 to lift the vehicle body. Therefore, it is desirable that the part A of the side sill in FIG. 1 has an appropriate structure as a jack up point against which the upper surface of the jack comes into contact.

The side sill is formed by joining, for example, a side sill outer, a side sill inner, and a side sill reinforcement disposed between them, and a side frame of an automobile may be used as the side sill inner.

However, the side frame 1 of the car is
As shown in the figure, the portion A may be formed so as to rise upward and extend toward the rear of the vehicle body. Furthermore, Fig. 2 is a view of the state of the rear side frame at the above-mentioned section A, viewed from the direction of arrow L in Fig. 1, where the dashed line M in the figure indicates the position of the lower end surface of the side sill, and the arrow F indicates the position in the forward direction of the vehicle body. shows.

In such a case, the side sill at the arrow A portion, which becomes the jack up point, is formed as shown in FIG. 3, which is a sectional view taken along the line -- in FIG. 1. That is,
Side sill is side sill inner (frame) 1
is formed by joining the side sill outer 2 and the side sill reinforcement 3 arranged between them, the rear fender 5 is joined to the side sill outer 2, and the floor 7 is joined to the side sill inner 1.
are joined, the height of this floor 7 and the height of the lower surface 1a of the side sill inner match, the lower surface 1a of the side sill inner is located above the lower surface 2a of the side sill outer, and a step is formed between both surfaces 1a and 2a.

Therefore, when trying to lift the vehicle body by applying the jack head 10 to the lower surface of this side sill, the jack head 10 contacts only the side sill outer lower surface 2a, so that the weight of the vehicle is supported only by the side sill outer 2. Become.

However, the side sill outer 2
If the side sill outer 2 were to be deformed, it would adversely affect the appearance, so it is undesirable to do so by forming a flat part that comes into contact with the jack head 10 on the side sill inner 1 side as much as possible. It is preferable to receive the weight of the vehicle. For this reason, for example, a method of bending the side sill reinforcement 3 as shown by the two-dot chain line in FIG. If such a thickness is applied to the reinforcement, since this reinforcement extends for a considerable length at the front and rear of the vehicle, unnecessary thickness will be applied to areas unrelated to the jack up points, and the material This has the disadvantage of being extremely uneconomical.

In addition, as a structure for the jack support part of an automobile, a structure in which the torque box was extended to the lower end of the side sill and used as a jack up point was developed in 1983.
It is disclosed in Publication No. 54301.

(Purpose of the invention) In view of the above circumstances, the purpose of the invention is to provide a suitable method when the side sill portion to be used as a jack up point has a step and the lower surface of the side sill inner is located above the lower surface of the side sill outer. It is an object of the present invention to provide a jack support structure that can be applied to an automobile, can maintain sufficient strength, and has a wide degree of freedom in terms of layout.

(Structure of the invention) The structure of the jack support part of an automobile according to the invention is as follows:
In order to achieve the above purpose, in the side sill stepped part where the lower surface of the side sill inner to be joined to the side sill reinforcement is located above the lower surface of the side sill outer, a jack reinforcement is placed at the lower part of the side sill inner in this stepped part. Then, the jack reinforcement is joined to the side sill reinforcement so that this jack reinforcement and the side sill reinforcement form a closed cross section, and the lower surface of the jack reinforcement is connected to the lower surface of the side sill outer. It is characterized by being located at the same level as or below.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 4 is a sectional view similar to FIG. 3, showing an embodiment of the jack support structure according to the present invention.

In this embodiment, as shown in the figure, the side sill outer 2
is formed by combining the side sill inner 1 and the side sill reinforcement 3 disposed between them, and the lower surface 1 of the side sill inner
In a side sill having a stepped portion 11 where a is located above the lower surface 2a of the side sill outer, a jack reinforcement 12 is disposed below the side sill inner 1 of the stepped portion 11, and the jack reinforcement 12 and The jack reinforcement 12 is joined to the side sill reinforcement 3 so as to form a closed cross section 13 with the side sill reinforcement 3, and the lower surface 12a of this jack reinforcement is positioned below the lower surface 2a of the side sill outer. It will be made.

More specifically, the side sill outer 2 is joined to the outer surface of the side sill reinforcement 3 (the surface in the direction of arrow O, which is the outer direction of the vehicle body), and the side sill inner 1 is joined to the inner surface of the side sill reinforcement 3 (the surface in the direction of the arrow O, which is the outer direction of the vehicle body). A floor 7 is joined to the side sill inner 1 (a surface in the direction of arrow I). The floor 7 is located above the lower surface 2a of the side sill outer, which is the lower surface of the side sill, and by aligning the lower surface 1a of the side sill inner with the height of the floor 7, the lower surface 2a, 1a of the side sill outer and the side sill inner is spaced. A step is formed in the step portion 11.
A jack reinforcement 12 is provided. In this embodiment, the side sill inner 1
Although the side frame is used as the side frame, the side sill inner 1 may be separate from the side frame.

The above-mentioned jack reinforcement 12 is joined to the side sill reinforcement 3 by extending its upper part 12b to a position above the lower surface 1a of the side sill inner, and the lower surface 1a of the side sill inner is connected to the jack reinforcement 12. It is joined. The lower surface 12a of the jack reinforcement is located slightly below the lower surface 2a of the side sill outer, and the head 10 of the jack does not come into contact with the lower surface 2a of the side sill outer, but on the lower surface 12a of the jack reinforcement. However, the lower surface 12a of the jack reinforcement is in contact with the lower surface 2 of the side sill outer.
It may be located at the same height as a.

In FIG. 4, 5 is a rear fender, 15 is a quarter panel, and 3a is a working hole for spot welding 16 between the side sill inner and the jack reinforcement.

Figure 5 shows the side sill inner 1 in Figure 4.
4 is a schematic side view showing the shapes of the side sill reinforcement 3 and the jack reinforcement 12 and their positional relationship, as viewed from the direction of arrow B in FIG. 4. FIG.

(Effects of the invention) The structure of the jack support part of an automobile according to the invention is as follows:
A jack reinforcement is arranged at the side sill step part, and the lower surface of the reinforcement is positioned at the same level as or lower than the lower surface of the side sill outer. Therefore, the jack head comes into contact with this jack reinforcement, and the weight of the vehicle is supported by the jack reinforcement.
There is no possibility that the appearance will be adversely affected by deformation, which occurs when the weight of the vehicle is supported by the side sill outer.

Further, unlike the side sill inner, outer, and reinforcement, which are the original side sill constituent members, the jack reinforcement is a member that only needs to be attached to the jack up point. Therefore, it is possible to provide the jack reinforcement with a plate thickness sufficient to support the vehicle weight without causing disadvantages such as uneconomical use of materials as would be the case when increasing the plate thickness of the side sill reinforcement described above. In addition, the fact that the jack reinforcement is joined to the side sill reinforcement so that they both form a closed cross section, has the effect of providing sufficient strength as a jack up point. play.

Furthermore, as mentioned above, the jack reinforcement is a component that only needs to be attached to the jack up point, so the shape and attachment mode of this jack reinforcement can be arbitrarily selected, giving an extremely high degree of freedom in layout. It has the effect of being wide.

In addition, as in the embodiment, the upper part of the jack reinforcement is extended above the lower surface of the side sill inner and joined to the side sill reinforcement, and the lower surface of the side sill inner is joined to this jack reinforcement. In this case, the closed cross section formed by both reinforcements extends above the lower surface of the side sill inner, which is advantageous from the viewpoint of strength, and the connection between the jacket reinforcement and the lower surface of the side sill inner is Spot welding can be carried out using the work hole formed in the side sill reinforcement mentioned above, and since this work hole is located in a place surrounded by the side sill outer, inner and jacket reinforcement, the work hole is This is advantageous since there is no fear that water or the like will enter the inside of the side sill.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an automobile showing an example of a location where the jack support structure according to the present invention is applied, and FIG. 2 is a perspective view of an example of the shape of the rear side frame at the location shown in FIG. Figure 3 is a cross-sectional view taken along the line - in Figure 1, showing a side sill with a step to which the present invention is applied; Figure 4 is a cross-sectional view similar to Figure 3; FIG. 5 is a diagram showing an embodiment of the jack support structure according to the present invention, and FIG. 5 is in the direction of arrow B in FIG. 4 showing the positional relationship of the side sill outer, side sill reinforcement, and jack reinforcement. This is a diagram seen from. 1...Side sill inner, 1a...Side sill inner bottom surface, 2...Side sill outer, 2a...
Side sill outer lower surface, 3... Side sill reinforcement, 11... Step portion, 12... Jacket reinforcement, 12a... Jacket reinforcement lower surface.

Claims (1)

[Claims for Utility Model Registration] It is formed by joining a side sill outer, a side sill inner, and a side sill reinforcement disposed between them, and the lower surface of the side sill inner is lower than the lower surface of the side sill outer. In a side sill having a step portion located above the step portion, a jack reinforcement is arranged at a lower part of the side sill inner of the step portion, and the jack reinforcement and the side sill reinforcement form a closed cross section. A jack for an automobile, characterized in that the jack reinforcement is joined to the side sill reinforcement, and the lower surface of the jack reinforcement is located at the same level as or lower than the lower surface of the side sill outer. Support structure.