JP2526870Y2 - Lower connection structure of front pillar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a lower connecting structure of a front pillar of an automobile, and more particularly to a structure for reinforcing a portion connecting a side sill to a front pillar.

(Prior Art) FIG. 9 schematically shows a side view of a general automobile. Further, a side sill or the like is fixed to a lower portion of the front pillar in a portion of the automobile 50 indicated by reference numeral E in the drawing via a front pillar lower ring reinforcement (hereinafter, simply referred to as “ring reinforcement”).

More specifically, as shown in FIG. 8, a coupling portion 54 is provided at a lower portion 53a of the reinforcement 53A integrated with the front pillar 53 so as to be bent substantially perpendicularly rearward from the lower portion 53a. A side sill 51 including a side sill inner 51a and a side panel outer 51b is fixed to the joint 54. Further, in this structure, only the both sides of the side sill inner 51a and the side panel outer 51b are fixed to both sides of the phosphorus reinforcement 53A, and between the coupling portion 54 of the phosphorus reinforcement 53A and the side sill inner 51a, and Space portions are respectively formed between the reinforcement 53A and the side panel outer 51b, and the cross-sectional shape of each of the portions is formed in a rectangular ring shape.

(Problem to be solved by the invention) Because of this, a continuous space is formed at the joint between the reinforcement 53A and the side sill 51, and the rigidity at this portion is weak, and deformation due to torsion or bending is caused. There is a problem such as easy occurrence.

The present invention has been made in view of the above problems,
An object of the present invention is to provide a lower joint structure of a front pillar capable of improving rigidity of a lower portion of a front pillar to which a side sill inner and a side panel outer are fixed.

(Means for Solving the Problems) In order to achieve the above object, the lower joint structure of the front pillar according to the present invention is provided between the reinforcement and the side sill inner corresponding to the forward extension of the upper edge of the side sill. A bulkhead with a closed cross section is arranged in the space, and a ridge that extends in the vertical direction of the vehicle is punched out toward the side sill inner on the protruding wall corresponding to the lower extension of the rear edge of the front pillar. It is provided.

(Operation) According to this configuration, the rigidity at the lower portion of the front pillar can be increased by the bulkhead and the ridge provided at the lower portion of the front pillar corresponding to the portion where the side sill inner and the side panel are attached. it can. Thereby, the torsion and bending rigidity in the lower portion of the front pillar are improved.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 7 show an embodiment of a lower connecting structure of a front pillar according to the present invention, and show a main structure of a portion corresponding to a reference numeral E of the automobile 50 shown in FIG. ing.

In the figure, a side sill 2 and a bulkhead 4 are attached to a reinforcement 1A integrally attached to a lower portion of a front pillar 1.

More specifically, the linkage 1A integrated with the front pillar 1 has a lower portion 1a integrally provided with a connecting portion 5 that is bent rearward at a substantially right angle from the lower portion 1a. Also, on one side portion of the lower portion 1a, a side wall portion 7 bent from a protruding wall portion 6 protruding toward the outside of the vehicle body (toward the side panel outer 2b side), and a flange bent outward from the side wall portion 7 are provided. The part 8 is provided integrally. In addition, the side wall portion 7 and the flange portion 8 are similarly formed on the outer edge portion of the connecting portion 5 in a state of being continuous from the lower portion 1a. Further, in the central portion of the connecting portion 5, that is, at the lower extension portion of the rear end edge of the front pillar 1, the protruding ridge 9 extends rearward toward the vehicle body inner side (side sill inner 2a side) in a state of extending vertically. It is provided from the side. The protruding portion 9 has a larger amount of protrusion as it moves downward, and protrudes to the same height as the flange portion 8 at the lowermost side.

Next, the side sill 2 includes a side sill inner 2a and a side panel outer 2b. When the side sill 2 fixes the side sill inner 2a and the side panel outer 2b to the front pillar 1, first, the connecting portion 5 of the ring reinforcement 1A is connected to the flanges 11, 12 of the side sill inner 2a and the flange of the side panel outer 2b. The other portions of the side sill inner 2a and the side panel outer 2b are sandwiched between the portions 13 and 14, and the flange portion 11 and the flange portions 13 and 14 are disposed in direct contact with each other. Next, in this state, the upper and lower sides are spot-welded at the flange portions 8, 11, 13, and 14, respectively, and are formed into a single pillar having a hollow inside by the spot welding, whereby the front pillar 1, that is, It is fixedly connected to the connecting portion 5 of the reinforcement 1A. And, in the state of being fixedly connected in this way,
The ridge 9 is present at a position adjacent to the terminal portion of the side sill 2.

On the other hand, on the front side of the side sill 2, the portion of the side sill inner 2 a attached to the lower portion 1 a of the front pillar 1 and the reinforcement 1 A are fixed by bringing the flange 11 into contact with the flange 8 and projecting the flange 12. Each contact portion is spot-welded in a state where the space portion G is provided in the wall portion 6 and the space portion G is provided, and is fixed to the reinforcement 1A, that is, the front pillar 1. In addition, at the time of this welding fixation, the bulkhead 4 is attached to the space G between the reinforcement 1A and the side sill inner 2a at the front extension of the upper end edge of the side sill 2.

The outer shape of the bulkhead 4 is phosphorus reinforcement.
1A and the side sill inner 2a substantially correspond to the horizontal cross-sectional shape of the space portion G formed in a cylindrical shape. Then, in a state of being attached between the phosphorus reinforcement 1A and the side sill inner 2a, a closed cross section is formed by the bulkhead 4 in a space portion G which is the phosphorus reinforcement 1A and the side sill inner 2a in that portion. In addition, a peripheral wall 4b which is bent in one direction from the main body 4a is provided integrally on the outer peripheral portion of the bulkhead 4. When the bulkhead 4 is mounted, the surrounding wall 4b is spot-welded to the reinforcement 1A and the side sill inner 2a.

Therefore, in the lower joint structure of the front pillar configured as described above, at the portion where the side sill inner 2a and the side panel outer 2b are attached, the space between the reinforcement 1A and the side sill inner 2a by the bulkhead 4 Since G is closed to form a closed cross section, the closed cross section can prevent deformation of the linkage 1A, that is, the lower portion 1a of the front pillar 1. At the same time, a support is made in the space between the reinforcement 1A and the side sill inner 2a with the ridge 9, so that the ridge 9 also prevents deformation of the lower portion 1a. Can be. As a result, it is not necessary to provide an extra large reinforcing member as in the conventional structure, and the strength of the vehicle body can be improved without increasing the weight of the vehicle body.

Although the present invention has been described with reference to the above embodiment, it is needless to say that the present invention is not limited to the structure of this embodiment, and various design changes may be made without departing from the gist of the present invention. . For example, in the above-described embodiment, the structure in which the bulkhead 4 includes the main body 4a and the surrounding wall 4b is disclosed, but the bulkhead 4 may include only the main body 4a. Also,
In the above embodiment, the structure in which the side sill 2 is fixed via the reinforcement 1A integrally provided below the front pillar 1 has been disclosed. And the ridges 9 may be integrally provided, and the bulkhead 4 may be provided to directly fix the side sill 2 to the front pillar 1.

(Effects of the Invention) As described above, according to the lower joint structure of the front pillar according to the present invention, the bulk is provided at the lower part of the front pillar (linkage) corresponding to the portion where the side sill inner and the side panel are attached. Since the head and the ridge are provided, the rigidity in the lower portion is increased, and the rigidity against torsion and bending can be improved. Thereby, the vehicle body strength at the lower part of the front pillar can be improved without greatly increasing the number of parts.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an automobile to which a lower joint structure of a front pillar according to the present invention is applied, and FIG. 2 is AA of FIG.
3 is a vertical side view taken along line BB in FIG. 1, FIG. 4 is a vertical side view taken along line CC in FIG. 1, and FIG. 5 is FIG. 6 is a longitudinal sectional side view taken along the line D-D, and FIG.
FIG. 7 is a perspective view showing a main part of the phosphorus reinforcement shown in the figure together with a bulkhead, FIG. 7 is a cross-sectional top view taken along line EE of FIG. 6, and FIG. 8 is a front pillar of a conventional automobile. 9 is a perspective view of an essential part showing an example of a lower coupling structure, and FIG.
The figure is a schematic side view of a general automobile. 1,53 ... front pillar, 1a, 53a ... lower part of front pillar, 1A, 53A ... phosphorus reinforcement, 2a, 52a ... side sill inner, 2b, 52b ... side panel outer, 4 ... bulkhead, 5, 54 ... joint, 9 ... ridge, G ... space.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masami Matsumoto 1 Nakashinkiri, Hashime-cho, Okazaki-shi, Aichi Prefecture Mitsui Automotive Engineering Co., Ltd. Okazaki Office (56) References Really Open Showa 60-24672 (JP, U ) Hikaru 1-133083 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A side sill inner side of a side sill is provided integrally with a lower portion of a front pillar, and a side sill is provided on both sides of a link reinforcement having a projecting wall portion which is bent substantially rearward at a right angle to the rear of the vehicle body and protrudes to one side thereof. In a lower joint structure of a front pillar in which a side panel outer and a side panel outer are respectively coupled so as to form a space portion with the phosphorus hose, the phosphorus hose corresponding to a front extension portion of an upper edge of the side sill. A bulk head having a closed cross-sectional shape is disposed in the space between the ment and the side sill inner, and extends in the vehicle body vertical direction on the protruding wall corresponding to a lower extension of a rear end edge of the front pillar. A lower joint structure of a front pillar, wherein a ridge portion is provided by projecting toward the side sill inner.