JPH0624308Y2 - Substructure of front pillar of automobile - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lower structure of a front pillar in an automobile, and particularly, to improve rigidity of a connecting portion between a lower part of the front pillar and a front part of a rocker panel. Regarding the structure.

[Conventional technology]

2. Description of the Related Art Conventionally, as a joining structure of a front pillar and a rocker panel forming a front portion of a side member of an automobile, there are structures shown in FIG. 5 (shown from the inside of the vehicle) and FIG. This is a front pillar 2 that extends vertically
Rocker panel 21 extending in the longitudinal direction of the vehicle body at the lower end of 0
The wheel house 25 is joined to the front end of the wheel house 25 and the front door opening 26 is formed in the rear part. Further, the pillar outer 20a of the front pillar 20 and the rocker outer 21a of the rocker panel 21 are integrally formed, and a rocker inner 21b is joined along the inside of the rocker outer 21a. Further, a pillar inner 20b is joined to the inside of the pillar outer 20a, and a lower end portion of the pillar inner 20b is superposed on a front end portion of the rocker inner 21b. Then, inside the front pillar 20 and the rocker panel 21, a hinge reinforcement hose 23 and a rocker reinforcement hose 24 for ensuring rigidity are inserted, respectively. The hinge reinforcement hose 23 is abutted on and joined to the inner surface of the pillar outer 20a, and the rocker reinforcement hose 24 is arranged to divide the inside of the rocker panel 21 into two chambers.

By the way, in the lower structure of the front pillar,
Looking at the cross section of the connecting portion A between the pillar outer 20a and the rocker outer 21a, it has a two-sheet structure in which only the pillar outer 20a and the pillar inner 20b are joined together, and as a result, the upper three connecting portions A and the lower four connecting portions A are connected. Compared to the single-sheet structure, stress due to vibration during traveling is more likely to concentrate, and as a result, there is a risk that cracks may occur or the flange joints may separate.

Therefore, as a lower structure of the front pillar for improving the rigidity of the connecting portion A, there has been conventionally used an actual construction of 62-
There is one described in Japanese Patent No. 90271. This is one in which the lower end portion of the hinge reinforcement is inserted into the rocker panel and bent and extended rearward of the vehicle body along the inner surface of the rocker outer. According to the above-mentioned publication, since the connecting portion A has a three-piece structure when viewed in cross section, the rigidity can be improved accordingly, stress concentration can be avoided, and problems such as cracks can be solved.

[Problems to be solved by the invention]

However, since the structure according to the above publication is a structure in which the hinge reinforce hose fixed to the inner surface of the pillar outer is simply extended along the inner surface of the rocker outer, the effect of improving rigidity cannot be expected so much.

The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide a front pillar lower structure for an automobile capable of reliably improving the rigidity of the connecting portion between the front pillar and the rocker panel.

[Means for solving problems]

Therefore, in the present invention, at the front end of the rocker panel in which the rocker inner hose is arranged between the rocker outer and the rocker inner, the lower end of the closed cross-section front pillar having the hinge outer hose and the pillar outer is formed at the front end. In the lower structure of the front pillar configured to be joined, it extends upward to the front end portion of the above-mentioned rock rein hose,
When viewed from the side of the vehicle, an extension portion that overlaps the hinge reinforce hose is integrally formed, the extension portion is inserted into the front pillar, and the extension portion is sandwiched and fixed between the pillar outer and the pillar inner, so that the inside of the pillar is It is characterized by being divided into rooms.

[Action]

According to the vehicle front pillar lower structure according to the present invention, an extension portion is formed at the front end portion of the rocker reinforcement hose to wrap with the hinge reinforcement hose when viewed from the vehicle side, and the extension portion is inserted into the front pillar. Since the extension portion is sandwiched and fixed by the pillar outer and the pillar inner, the connecting portion between the front pillar and the rocker panel has a triple structure in cross section, and the extension portion divides the inside of the front pillar into two chambers. Therefore, the rigidity can be surely improved as compared with the case where the conventional hinge reinforcement is extended while abutting on the rocker outer.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 are views for explaining a lower structure of a front pillar of an automobile according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes an automobile adopting the front pillar lower structure of the present embodiment, and a side panel 2 of the automobile 1.
Is configured to connect the upper roof side rail 3 and the lower rocker panel 4. A center pillar 5 extending in the vertical direction of the vehicle body is formed at a substantially central portion of the side panel 2 in the front-rear direction, and a front pillar 6 extending in the vertical direction is formed at a front end portion of each of the pillars 5, 6, and the roof. A front door 7 is provided in a front door opening 7a formed by the side rail 3 and the rocker panel 4 so as to be openable and closable.

The rocker panel 4 has a closed cross section composed of a rocker outer 4a and a rocker inner 4b.
The front end of is closed. Further, flange portions 4c and 4d are integrally formed on the upper edge portion and the lower edge portion of both the rocker outer 4a and the inner 4b. Further, a rocker inner hose 9 that divides the inside of the rocker panel 4 into two chambers is provided between the rocker outer 4a and the rocker inner 4b, and an upper end and a lower end of the rein hose 9 are the flange portions 4c, It is sandwiched by 4d and joined by spot welding.

The front pillar 6 is a closed step surface made up of a pillar outer 6a and a pillar inner 6b that are integrally formed so as to be continuous with the rocker outer 4a, and the front and rear edges of the pillar outer 6a and the inner 6b are The flange portions 6c and 6d are integrally formed, respectively. The hinge outer hose 10 is provided on the inner surface of the pillar outer 6a.
Are abutted and fixed, and the rear edge of the reinforcement hose 10 is sandwiched by the rear flange portion 6d and joined by spot welding. Further, the lower end portion of the pillar inner 6b is superposed on the inner side of the rocker inner 4b, and the lower end flange portion 6e of the pillar inner 6b is spot-welded to the lower flange portion 4d of the rocker panel 4. A cowl side panel 11 is connected to the front portion of the front pillar 6.

An extension portion 9a extending upward is integrally formed at the front end portion of the rocker reinforcement hose 9. The extension portion 9a is located between the pillar outer 6a and the pillar inner 6b, and divides the front pillar 6 into two chambers. The front edge and the rear edge of the extension portion 9a are sandwiched by the front and rear flange portions 6c and 6d and joined by spot welding.

Next, the function and effect of this embodiment will be described.

According to the structure of this embodiment, the front end of the rocker reinforcement hose 9 is integrally formed with the extension 9a that extends into the front pillar 6 and divides the pillar 6 into two chambers. The connecting portion A between the front pillar 6 and the rocker panel 4, which has the problem, has a triple structure in which the extension 9a of the rocker inner hose 9 is interposed between the pillar outer 6a and the pillar inner 6b when viewed in cross section. Next to
Moreover, since the extension portion 9a divides the inside of the front pillar 6 into two chambers, it is possible to improve the rigidity against bending stress as compared with the case of extending the hinge reinforcement hose in the above-mentioned publication downward. As a result, it is possible to solve the problem of cracking or peeling of the connecting portion A due to vibration during traveling.

In the above-mentioned embodiment, the case where the pillar outer 6a and the rocker outer 4a are integrally formed has been described as an example.
The present invention is of course the pillar outer 6a and the rocker outer 4a.
It is also possible to adopt a structure in which and are formed separately and the edges of both are overlapped and joined.

[Effect of device]

As described above, according to the vehicle front pillar lower structure of the present invention, the front end portion of the rocker inhose is wrapped with the hinge reinforce hose when viewed from the side of the vehicle, with an extension that divides the inside of the front pillar into two chambers. Integrally formed,
Since the extension portion is sandwiched and fixed by the pillar outer and the pillar inner, there is an effect that the rigidity can be improved as compared with the structure in which the lower end portion of the hinge rein hose is extended.

[Brief description of drawings]

1 to 4 are views for explaining a lower structure of a front pillar of an automobile according to an embodiment of the present invention. FIG. 1 is a side view seen from the inside of the automobile, and FIG. First
FIG. 2B is a sectional view taken along the line IIa-IIa in FIG.
-IIb line sectional view, FIG. 3 is a perspective view seen from the outside of the vehicle,
FIG. 4 is a side view of an automobile adopting the structure of this embodiment, FIG. 5 is a side view showing a conventional structure, FIGS. 6 (a) and 6
FIG. 5B is a sectional view taken along line VIa-VIa of FIG. 5 and FIG.
It is a b-VIb line sectional view. In the figure, 1 is an automobile, 4 is a rocker panel, 4a is a rocker outer, 4b is a rocker inner, 6 is a front pillar, 6a is a pillar outer, 6b is a pillar inner, 9 is a rocker inner hose, and 9a is an extension.

Claims (1)

[Scope of utility model registration request] Claims: 1. A front end of a rocker panel having a rocker inner hose arranged between the rocker outer and the rocker inner, and a lower end of a closed cross-section front pillar having a hinge outer hose and a pillar outer and a pillar inner. In the vehicle front pillar lower structure to be joined, at the front end of the rocker inhose, extending integrally into the front pillar, and extending from the side of the vehicle to wrap with the hinge rein hose is integrally formed, A front pillar lower structure for an automobile, wherein a front edge and a rear edge of the extension are sandwiched and fixed by the pillar outer and the pillar inner.