KR100345833B1 - Structure for mounting frame of vehicle - Google Patents

Abstract

PURPOSE: Installation structure of a frame for a vehicle is provided to improve the rigidity of a vehicle body, and to prevent corrosion of a front floor and the frame without sealing after assembling the frame by bending a groove downward. CONSTITUTION: A front floor(30) has a protruded part(32) arranged longitudinally in a vehicle and projected upward to form the bottom of an engine room. Grooves(34) are formed at both sides of the protruded part of the front floor, and bent downward in the front floor. The section of a frame(40) is formed symmetrically to the part of the groove, and the closed section is formed between the front floor and the groove by assembling the frame with the groove. Moisture is prevented from being infiltrated into the front floor and the frame without sealing by mounting the frame in the vehicle body with inserting the frame to the groove.

Description

Frame installation structure of automobile

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a frame mounting structure of an automobile, and more particularly to a mounting structure of a frame coupled to a front floor to maintain the strength of the car body.

Generally, the automobile has a front floor and a rear floor which constitute the interior floor of the vehicle. Typically, the front floors are located at the bottom of the driver's seat and the engine compartment, while the rear floors are located at the rear seat and under the trunk. The front floor and the rear floor have a frame for supporting the floors and maintaining the strength of the vehicle body. Among the combinations of the floors and the frame, the present invention particularly relates to a combined structure of the front floor and the frame, and a general structure of the front floor and the frame is described through the first drawing.

FIG. 1 is a view showing a conventional coupling structure between a front floor and a frame, and FIG. 2 is a sectional view taken along the line I-I in FIG.

The front floor 10 is shown in FIG. This front floor (10) is disposed in front of the rear floor and is generally a part constituting the bottom of the driver's seat and the engine room. As can be seen from FIG. 1, the front floor 10 has protruding portions 12 projecting upward in the central portion and arranged in the longitudinal direction of the automobile, and both side surfaces thereof are kept horizontal. On the lower surface of the front floor 10, a frame 20 is attached as indicated by a dotted line.

The frame 20 is responsible for the longitudinal strength of the vehicle body, and its attachment state can be seen in detail in FIG. 2, the frame 20 is provided with flanges 22 on both sides for welding to the lower surface of the front floor 10, and the remaining portion except for the flange 22 has a substantially U-shaped cross section It has a shape. In order to prevent moisture from penetrating through the gap between the lower surface of the front floor 10 and the upper surface of the flange 22 of the frame 20 in a state where the frame 20 is attached to the lower surface of the front floor 10, The gap is sealed with a predetermined seal material (24).

The sectional area of the closed end face formed by the frame 20 and the front floor 10 is so small that the rigidity of the vehicle body is insufficient and the rigidity of the front floor 10 and the frame 20 is reduced, A sealing operation must be performed after welding. In addition, it can not completely prevent the penetration of moisture even if the sealing work is performed, and there is a disadvantage that the life of the car body is shortened because the front floor is corroded after a long time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a frame installation structure for an automobile which not only increases rigidity of a vehicle body but also significantly reduces corrosion of a front floor and a frame without a sealing operation after joining the front floor and the frame.

FIG. 1 is a view showing a conventional coupling structure between a front floor and a frame,

Figure 2 is a cross-sectional view according to Figure I-I,

FIG. 3 is a view showing a frame installation structure of an automobile according to the present invention,

Figure 4 is a cross-sectional view according to Figure 3J-J.

Description of the Related Art [0002]

30: Front floor 32: Projection

34: groove 40: frame

42: Flange

An object of the present invention is to provide an automotive vehicle which includes a front floor of a car which is bent in a predetermined shape and protrudes downward and formed with grooves arranged in the longitudinal direction of the automobile and a frame inserted in the groove and attached to the upper surface of the front floor in the longitudinal direction of the automobile And a frame mounting structure of an automobile.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a view showing a frame installation structure of an automobile according to the present invention, and FIG. 4 is a sectional view taken along a line J-J of FIG.

The front floor 30 is shown in FIG. The front floor 30 is disposed in front of the rear floor and is generally a portion constituting the bottom of the driver's seat and the engine room. As can be seen from FIG. 3, the front floor 30 has a protruding portion 32 projecting upward in the central portion and arranged in the longitudinal direction of the automobile. Grooves 34 are formed on both sides of the projecting portion 32 in parallel with the projecting portion 32. The groove 34 has a structure in which the front floor 30 is bent in a predetermined shape and protrudes downward, and is arranged in the longitudinal direction of the automobile.

A frame 40 is inserted into the groove 34. The frame 40 has a cross-sectional shape symmetrical with a part of the groove 34 and faces each other to form a closed end face and a bottom face of the front floor 30. [ The frame 40 is attached in the longitudinal direction of the automobile to take charge of the longitudinal strength of the vehicle body, and its attachment state can be seen in detail in FIG. As can be seen from FIG. 4, the frame 40 has flanges 42 on both sides for welding to the upper surface grooves 34 of the front floor 30.

In the state where the frame 40 is inserted into the upper surface groove 34 of the front floor 30, since the frame 40 is joined inside the vehicle body, moisture may penetrate between the front floor 30 and the frame 40 And therefore there is no need for a sealing operation as in the conventional frame installation structure.

The sectional area of the closed end face formed by the frame 40 and the front floor 30 is increased in the frame mounting structure according to the present invention as described with reference to FIGS. 3 and 4 to increase the rigidity of the vehicle body, It is not necessary to perform a sealing operation after welding the frame 40 and the frame 40 together. Also, even if the sealing operation is not performed, moisture infiltration can be completely prevented, and the corrosion of the front floor 30 and the frame 40 is remarkably reduced even after a long time.

Claims (1)

And a frame is provided on a front floor having a protruding portion in the longitudinal direction on the center side and constituting a front side floor of the automobile, Grooves formed by bending downward from the bottom surface of the front floor are formed in both sides of the protrusion of the front floor in the longitudinal direction thereof, Wherein the frame is formed to have a cross-sectional shape symmetrical with the groove, and is coupled to the groove, and is installed to form a predetermined space between the frame and the groove.