JPH11348832A - Reinrocement structure in body of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcement structure in a body of automobile, which can control the bending strength while a high axial strength and a torsional strength are ensured. SOLUTION: A sill reinforcement 16 is interposed between a sill inner 14 and a sill outer (body side outer) 15. The sill reinforcement 16 alternately has overhanging parts extending outward from the vehicle body and planar parts between a cross member 13 in the front part of a floor, a center pillar 11 and a center pillar reinforcement 12, and between the a cross member 13b in the rear part of the floor, the center pillar 11 and the center pillar reinforcement 12, and further, a continuous overhanging part is laid directly below the center pillar 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for a sill portion of an automobile body.

[0002]

2. Description of the Related Art As a conventional reinforcing structure for a sill portion of an automobile body, for example, those disclosed in Japanese Patent Application Laid-Open Nos. Hei 5-27047, Hei 5-319301 and Hei 6-107233 are disclosed. There is.

[0003] In addition to the axial force in the longitudinal direction of the vehicle, a bending force in the horizontal plane of the vehicle and a torsional force around the longitudinal axis of the vehicle are applied to the sill portion of the vehicle body. In order to achieve a well-balanced vehicle body strength, it is necessary to balance these strengths also for the sill portion.

[0004]

However, in such a conventional reinforcing structure for a sill portion, each of the axial force, bending and torsional strength cannot be controlled, for example, the axial strength, bending and torsional strength are simultaneously increased. With such a structure, there is a problem that it is difficult to tune these intensity balances.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and has a high rigidity (strength) against bending torsion while passing an integral reinforce in the longitudinal direction of the sill. By combining the overhanging part, the part with low rigidity against bending while having high axial compressive strength in a plane shape, and the part with high bending rigidity consisting of continuous overhanging parts, the parts are alternately arranged to achieve high Axial strength,
Further, it is possible to control the bending strength while securing the torsional strength, and an object of the present invention is to solve the above problems.

[0006]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention is to provide a vehicle having a rear seat at a rear portion of a vehicle from a cross member at a front portion of the vehicle between a sill inner and a sill outer of the vehicle body. It has a reinforcing member connected in the vehicle longitudinal direction across the cross member portion, and in the reinforcing member, a portion bulging outward to the vicinity of the sill outer and a flat portion are alternately arranged, and at a lower portion of the center pillar, And a reinforcing structure for an automobile body characterized by having a continuous bulging portion.

According to a second aspect of the present invention, a reinforcing member connected in the vehicle longitudinal direction from a cross member at a front portion of the vehicle to a rear seat cross member at a rear portion of the vehicle is provided between the sill inner and the sill outer of the vehicle. For the reinforcing member, a plurality of reinforcing members projecting outward to the vicinity of the sill outer are arranged in the vehicle front-rear direction, and a continuous bulging portion is provided at a lower portion of the center pillar. This is a reinforcement structure for an automobile body.

Further, according to a third aspect of the present invention, in the extruded member in which the sill inner and the sill reinforcement of the vehicle body are integrated, a plurality of cutouts are provided in a portion protruding outward from the vehicle body. In the front-rear direction, the projecting portion and the flat portion outward from the mating surface from the sill outer are alternately arranged, and at the bottom of the center pillar,
A reinforcement structure for an automobile body characterized by having a continuous overhang portion.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a reinforcement structure for an automobile body according to the present invention. (First Embodiment) FIGS. 1 to 3 show a first embodiment of a reinforcing structure for an automobile body according to the present invention.
FIG. 1 is a perspective view showing the configuration of the first embodiment, FIG. 2A is a sectional view taken along the line AA in FIG. 1, FIG. 2B is a sectional view taken along the line BB in FIG. (C) is C in FIG.
FIG. 2D is a cross-sectional view taken along the line DD in FIG.
FIG. 3 is a top view of the first embodiment.

First, the structure will be described. The reinforcing structure for an automobile body according to the first embodiment is, as shown in FIGS. 1 to 3, provided between a sill inner 14 and a sill outer (body side outer) 15. The reinforcement 16 is arranged. The sill reinforcement 16 is provided between the cross member 13a at the front of the floor and the center pillar 11 and the center pillar reinforce 12, and between the cross member 13b at the rear of the floor and the center pillar 11 and the center pillar reinforce 12, outside the vehicle. The center pillar 11 has a continuous overhang portion, and the lower portion of the center pillar 11 has a continuous overhang portion.

Next, the operation of the first embodiment will be described. When an external force is applied to the side of the vehicle, the force is transmitted to the center pillar 11 via the door. The force acting on the center pillar 11 acts on the side sill as (1) a force to bend in a horizontal plane and (2) a force to twist the side sill around the vehicle longitudinal axis. Further, the force acting on the sill will be supported by the floor cross members 13a, 13b.

When the sill is deformed by the torsional force,
Since the cross section of the sill changes, the torsion deformation of the sill is suppressed by the sill reinforcement 16 in the portion where the sill reinforcement 16 is close to the sill outer (body side outer) 15. Therefore, by providing one or more projecting portions of the silline force 16 between the cross members 13a and 13b on the floor and the center peeler 11, the strength against torsion can be increased. In addition, the smaller the distance between the overhanging portions, the greater the effect of restraining the cross-sectional deformation, so that the torsional strength increases.

On the other hand, with respect to the bending force in the horizontal plane, the resistance to bending deformation is reduced in the plane portion of the sille force 16, so that the increase in bending strength is suppressed. Regarding the position where the plane portion is provided, in consideration of the case where an external force is input to the center pillar 11, the horizontal bending force acting on the sill is largest immediately below the center pillar 11. Therefore, the bending strength of the sill increases as the width of the overhanging portion immediately below the center pillar 11 increases (the position of the plane portion moves away from the center pillar).
The smaller the value, the smaller the bending strength. Further, as the number of the flat portions increases, the constraint on the resistance to bending deformation decreases, and the bending strength decreases.

Thus, by disposing a plurality of overhanging portions (high rigidity portions) and a plurality of flat portions (low rigidity portions) and changing the number and spacing of the overhanging portions, the ratio of the bending strength to the torsional strength of the sill is improved. Can be controlled.

Further, since the sill reinforcement 16 is arranged continuously in the longitudinal direction of the vehicle, a high axial strength is maintained in the longitudinal direction of the vehicle.

(Second Embodiment) FIGS. 4 to 6 are views showing a second embodiment of the reinforcing structure for an automobile body according to the present invention. FIG. 4 is a perspective view showing the configuration of the second embodiment, FIG. 5A is a sectional view taken along line AA in FIG. 4, FIG. 5B is a sectional view taken along line BB in FIG. FIG. 5C is a cross-sectional view taken along line CC in FIG. 4, and FIG.
FIG. 6 is a top view of the second embodiment.

In the second embodiment, the overhanging portion of the sill reinforcement in the first embodiment is configured as a separate component, and the above-described effects are realized.

(Third Embodiment) FIGS. 7 to 9 are views showing a third embodiment of the reinforcing structure for an automobile body according to the present invention. 7 is a perspective view showing the configuration of the third embodiment, FIG. 8A is a sectional view taken along the line AA in FIG. 7, FIG. 8B is a sectional view taken along the line BB in FIG. FIG. 8C is a cross-sectional view taken along the line CC in FIG. 7, and FIG.
FIG. 9 is a top view of the third embodiment.

In the third embodiment, the sill inner 34 and the sill reinforcement 36 are formed by integral extrusion molding.
The above effect is realized by providing a notch 37 in the outwardly extending portion of the sille reinforcement 36 and changing the size and interval of the notch.

[0020]

As described above in detail, according to the present invention, the cross member on the floor at the front of the vehicle body is provided between the sill inner and the sill outer (body side outer) in the longitudinal direction of the vehicle body. A sill reinforcement is placed between the cross members on the floor at the rear of the vehicle, and the sill reinforcement is between the cross member at the front of the floor and the center pillar and the center pillar reinforcement,
Between the cross member at the rear of the floor, the center pillar, and the center pillar reinforce, alternately have a high-rigidity part and a flat part that protrude outward from the vehicle to the vicinity of the sill outer (body side outer), and continue directly below the center pillar By changing the number and position of the overhangs and the spacing between the flats, the bending strength can be controlled while ensuring high axial strength and torsional strength. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of a vehicle body reinforcing structure according to the present invention.

2A is a sectional view taken along line AA in FIG. 1, FIG. 2B is a sectional view taken along line BB in FIG. 1, and FIG.
C is a sectional view, and (d) is a DD sectional view in FIG. 1.

FIG. 3 is a top view of the first embodiment.

FIG. 4 is a perspective view illustrating a configuration of a second embodiment.

5A is a sectional view taken along line AA in FIG. 4, FIG. 5B is a sectional view taken along line BB in FIG. 4, and FIG.
FIG. 4D is a sectional view taken along line C-D of FIG. 4.

FIG. 6 is a top view of the second embodiment.

FIG. 7 is a perspective view illustrating a configuration of a third embodiment.

8A is a sectional view taken along line AA in FIG. 7, FIG. 8B is a sectional view taken along line BB in FIG. 7, and FIG. 8C is a sectional view taken along line CC in FIG.
Sectional drawing, (d) is DD sectional drawing in FIG.

FIG. 9 is a top view of the third embodiment.

[Explanation of symbols]

11, 21, 31 Center pillar 12, 22, 32 Center pillar reinforce 13a, 23a, 33a Cross member at front of floor 13b, 23b, 33b Cross member at rear of floor 14, 24, 34 Sill inner 15, 25, 35 Sill Outer 16, 26, 36 Sill Reinforce 37 Notch

Claims (3)

[Claims] A stiffener is provided between a sill inner and a sill outer of a vehicle body and connected in a vehicle front-rear direction from a cross member portion at a front portion of the vehicle body to a rear seat cross member portion at a rear portion of the vehicle body. A reinforcing structure for an automobile body, wherein a portion bulging outward to the vicinity of the sill outer and a flat portion are alternately arranged, and a continuous bulging portion is provided below the center pillar. 2. A reinforcing member connected between a sill inner and a sill outer of a vehicle body in a vehicle front-rear direction from a cross member portion at a front portion of the vehicle body to a rear seat cross member portion at a rear portion of the vehicle body. A plurality of reinforcing members protruding outward to the vicinity of the sill outer in the vehicle front-rear direction, and having a continuous bulging portion below the center pillar. 3. An extruded material in which a sill inner and a sill reinforcement of a vehicle body are integrated with each other, by providing a plurality of notches in a portion protruding outward from the vehicle body.
A reinforcement structure for an automobile body characterized by alternately arranging outwardly projecting portions and flat portions outward from a mating surface from a sill outer in a vehicle front-rear direction, and having a continuous overhanging portion below a center pillar. .