JPH07392Y2 - Vehicle locker front structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a rocker front structure of a vehicle, and more specifically, to a rocker front of a vehicle to be assembled by mounting a front end of a rocker inner panel from above on a rocker extension. Regarding structure.

[Conventional technology]

The locker of a vehicle is generally formed into a closed cross section by connecting a locker inner panel and a locker outer panel, and a lower end portion of a front pillar and a locker extension are connected to a front portion thereof. In this type of rocker, the rocker extension is previously coupled to the lower end of the front pillar or the rocker outer panel, and the rocker inner panel is mounted on the rocker extension from above so that the rocker inner panel is mounted in the assembled state with the floor pan. Has become.

6 to 9 show a conventional structure relating to a rocker front portion of a vehicle of this type. According to this structure, the notch 12 is formed at the front end of the locker inner panel 10, and the locker inner panel 10 is mounted on the locker extension 14 from above through the notch 12 and assembled. The locker inner panel 10 is attached to the locker extension 14 so as to be overlapped with the locker extension 14 in the range of the length L (shown in FIG. 7) from the lower portion of the front pillar 16 to the rear thereof, and at this portion. It is welded with Chillon 14. In addition,
In the figure, reference numeral 18 is a steering support member reinforcement, and reference numeral 19 is a rocker outer panel.

However, in this structure, since the notch 12 is formed in the Lotka inner panel 10, stress is likely to concentrate on this portion. In addition, from the lower part of the front pillar 16 to the rear part of the front panel 16 of the rotka inner panel 14, the rotka extension 14
, The plate thickness changes rapidly in the general part of the rocker, and the second moment of area becomes discontinuous in this part.

Therefore, in the above-mentioned conventional structure, it cannot be said that the front portion of the locker has sufficient rigidity, and there is room for improvement in bending and torsional rigidity of the body.

[Problems to be solved by the device]

In consideration of the above facts, the present invention has an object to obtain a rocker front structure of a vehicle capable of improving the rigidity of the rocker front part.

[Means for Solving the Problems]

In the rocker front structure of the vehicle according to the present invention, in the rocker front structure of the vehicle mounted by mounting the front end of the rocker inner panel on the rocker extension from above,
The shape of the vertical wall of the rocker extension and the rocker inner panel that extends flat to the lower end at the portion of the front pillar that is adjacent to the inside of the vehicle. The locker extension is fixed by overlapping it on the inner panel of the front pillar, and the lower end of the locker inner panel is bent in a stepwise manner from the vicinity of the rear end of the locker extension to connect it to the front vertical wall of the locker inner panel. A lateral wall extending outward in the vehicle width direction and a flange extending downward from the end of the lateral wall, and the lateral wall gradually widens in the vehicle width direction toward the rear of the vehicle for a predetermined distance. I am trying.

[Action]

According to the above-mentioned structure, the vertical wall of the locker inner panel, which is connected to the locker extension, has a shape that extends flatly to the lower portion by drawing or the like, and a notch or the like is formed in the locker inner panel for assembly as in the conventional case. You don't have to. Further, the locker inner panel is connected to the locker extension at a portion of the front pillar adjacent to the inside of the vehicle, and the connected portion can be arranged only in the cross section of the front pillar to make the plate thickness in the rocker general portion constant. Further, the lateral wall formed continuously with the vertical wall of the locker inner panel is gradually widened in the vehicle width direction toward the rear of the vehicle for a predetermined distance, and the cross-sectional shape of the locker general portion is substantially constant.

〔Example〕

1 to 5 show a structure around a rocker front portion of an automobile to which the present invention is applied. In the drawings, an arrow FR direction is a vehicle longitudinal direction, an arrow W direction is a vehicle width direction, and an arrow H is shown. The direction is the vehicle vertical direction.

As shown in FIG. 1, the rocker 20 extends in the vehicle front-rear direction, and a front pillar 22 and a rocker extension 24 are connected to the front end portion thereof. The front pillar 22 is extended in the vehicle vertical direction, and the lower end portion is joined to the front end portion of the locker 20. The front pillar 22 has a pillar inner panel 26 and a pillar outer panel 28 joined together to form an open cross section inward. The rocker extension 24 extends in the vehicle front-rear direction at a lower end vehicle inner portion of the front pillar 22, and has a front end portion connected to a lower end portion of the front pillar 22 and a rear end portion connected to a front end portion of the locker 20. The front end of the locker extension 24 is connected to a steering support member (not shown), and the steering support member and the locker 20 are connected to each other, thus contributing to the improvement of the joint rigidity of both.

Explaining the locker 20 in detail, the locker 20 has a locker outer panel 30 on the outer side in the vehicle width direction,
The inside thereof is composed of the Rotka Inner panel 32.

Locker outer panel 30 has vertical wall 30 as shown in FIG.
The upper and lower ends of A are bent in a stepwise manner toward the inside in the vehicle width direction to form a substantially hat-shaped cross section, and the upper horizontal wall 30B and the upper horizontal wall 30B extend upward from the upper horizontal wall 30B above the vertical wall 30A. With the flange 30C formed,
A lower lateral wall 30D extending inward in the vehicle width direction and a lower flange 30E extending downward from the lower lateral wall 30D are formed below the vertical wall 30A.

As shown in FIG. 5, an upper flange 30C and a lower flange 30E are joined and welded to the rocker outer panel 30 with flat plate-shaped reinforcements 34 to form a closed cross section with the reinforcements 34. Reinforcement 34 and Locker outer panel 30 are Locker inner panel 32
The front pillar 22 is formed by extending forward and bending upward in front of the Lotka inner panel 32. That is, the locker outer panel 30 is the pillar outer panel.
Integral with 28, the reinforcement 34 is integral with the pillar inner panel 36.

The Lottka inner panel 32 has a substantially hat-shaped cross section in which the upper and lower ends of the vertical wall 32A are bent stepwise toward the vehicle width direction outer side to have a substantially hat-shaped cross section. Upper flange 32 extending upward from the lateral wall 32B
C is formed, and a lower lateral wall 32D extending outward in the vehicle width direction and a lower flange 32E extending downward from the lower lateral wall 32D are formed below the vertical wall 32A. As shown in FIG. 5, the Locker inner panel 32 has a reinforcement 34 on the upper flange 32C and the lower flange 32E.
The upper flange 32C and the lower flange 32E are welded to the upper flange 30C and the lower flange 32E of the rocker outer panel 30 through the reinforcement 34 to form a closed cross section with the rocker outer panel 30 and the reinforcement. 34 and 34 form a closed cross section.

The front end portion of the Lotka inner panel 32 has a shape in which the vertical wall 32A extends flatly to the lower end inside the lower vehicle width direction of the front pillar 22 as shown in FIG.
The rocker extension 24, which is bent along the upper flange 32C, the upper lateral wall 32B, and the vertical wall 32A, is superposed on the outer side thereof in the front-rear direction within a range of a length l (shown in FIG. 2), and Upper flange 32 through chillon 24
The lower ends of C and the vertical wall 32A are welded to the pillar inner panel 26 of the front pillar 22 to form a closed cross section with the pillar inner panel 26 of the front pillar 22. The range (1) where the locker extension 24 and the locker inner panel 32 are overlapped is smaller than that of the conventional structure (see FIG. 7).

The vertical wall 32A joined to the locker extension 24, that is, the vertical wall 32A is flat to the lower end, and the vertical wall 32A has a lower flange 32E and a lower horizontal wall 3 in a portion adjacent to the front pillar 22.
It is connected to the 2D, and the locker inner panel 32 and the locker extension 24 are connected only within the cross section of the front pillar 22. Also, the lower horizontal wall 3 connected to this vertical wall 32A
2D gradually widens toward the rear of the vehicle for a certain distance.

According to the above configuration, the connecting portion of the locker inner panel 32 with the locker extension 24 is formed to extend flat to the lower end by drawing or the like, and the locker extension 24 can be assembled from above with an unnecessary configuration such as a notch. it can. That is, when the locker inner panel 32 is assembled, if the locker inner panel 32 is placed from above the locker extension 24, the upper flange 32C, the upper side wall 32B, and the vertical wall 32A are provided outside the front end portion of the locker inner panel 32. The Lotka extension 24 is placed (see FIG. 3). In addition, the locker inner panel 32 is connected to the locker extension 24 at a portion of the front pillar 22 adjacent to the inside of the vehicle, and the connecting portion between the locker inner panel 32 and the locker extension 24 is arranged in the cross section of the front pillar 22. The plate thickness at the part becomes constant. Also, the Locca Inner panel
Since the lower lateral wall 32D formed continuously with the vertical walls 32A of 32 is widened in the vehicle width direction toward the rear of the vehicle for a predetermined distance, the cross-sectional shape of the rocker general portion is substantially constant.

As a result, the second moment of area of the rocker general portion becomes continuous, and the stress is not locally concentrated on the rocker inner panel 32, and the rigidity of the rocker front portion is improved.

[Effect of device]

As described above, according to the present invention, it is possible to improve the rigidity of the rocker front part by making the second moment of area of the rocker general portion continuous and preventing the stress from being partially concentrated on the rocker inner panel. Have the effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure around a rocker front portion of an automobile to which the present invention is applied, FIG. 2 is a side view of FIG. 1 as seen from the inside of the rocker, and FIG. 3 shows an assembly of a rocker inner panel. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a sectional view taken along line VV in FIG. 2, and FIGS. 6 to 9 show a conventional rocker front structure. Fig. 6 is a perspective view, Fig. 7 is a side view of Fig. 6 as seen from the inside of the rocker, Fig. 8 is a perspective view showing the assembly of the rocker inner panel, and Fig. 9 is IX- of Fig. 7. I
It is a sectional view taken along the X-ray. 20 …… Rotka, 22 …… Front pillar, 24 …… Rotka extension, 32 …… Rotka inner panel, 32A ……
Vertical wall, 32D …… Lower horizontal wall.

Claims (1)

[Scope of utility model registration request] 1. A rocker front structure for a vehicle, wherein a front end of a rocker inner panel is mounted on a rocker extension from above, and a vertical wall of the rocker extension and the rocker inner panel is provided at a portion of the front pillar adjacent to the inside of the vehicle. With the shape that extends evenly to the lower end, stack the locker inner panel on the locker extension at the part of the front pillar adjacent to the inside of the vehicle, and stack and fix the locker inner panel and locker extension on the inner panel of the front pillar. The lower end of the Locker inner panel is bent in a stepwise manner from the vicinity of the rear end of the extension, and a horizontal wall extending outward in the vehicle width direction continuously from the front vertical wall of the Locker inner panel and downward from the end of the horizontal wall A laterally extending flange, the lateral wall being a vehicle for a predetermined distance. Rotsuka front structure of a vehicle, characterized in that the wider gradually in the width direction of the vehicle toward the rear.