KR100193522B1 - Body coupling structure of automobile frame - Google Patents

Abstract

The present invention incorporates a tube in the damping rubber to effectively absorb the vibration generated in the body and the frame, and then by mounting a high elastic tension spring to absorb vibration and shock, body coupling structure of the automobile frame that can improve the ride comfort This relates to a first damping rubber (20) disposed below the body (8) via a washer (24), a first guide tube (28) inserted into the first damping rubber (20), and a washer. A second damping rubber 22 disposed on the fixing bracket 4 of the frame via the 26 and a second damping rubber 22 inserted into the second damping rubber 22 to move up and down within the first guide tube 28. A tension spring 36 fitted into the space between the first guide tube 28 and the second guide tube 30 by the two guide tube 30 and the upper spring seat 32 and the lower spring seat 34. Consists of.

Description

Body coupling structure of automobile frame

The present invention relates to a body coupling structure of the automobile frame, and more particularly, in order to effectively absorb the vibration generated in the body and the frame, built a tube in the damping rubber, and then fitted with a high elastic tension spring to provide vibration and shock By absorbing, the present invention relates to a body coupling structure of an automobile frame capable of improving riding comfort.

In general, a car can be roughly classified into a body and a chassis. Here, the body is a part that forms the appearance of the vehicle, and consists of a passenger compartment, a passenger compartment, an engine compartment in which an engine is installed, and a trunk compartment for storing and transporting luggage. In addition, the chassis is a part of the vehicle except for the body portion, and the chassis frame to install the engine or equipment necessary for driving.

The frame shall be able to withstand the torsion and vibration caused by the impact of the load or load on the vehicle while the vehicle is driving. At present, most passenger vehicles mainly adopt an integral structure in which the frame and the body are properly assembled in order to lighten the weight of the car and absorb the impact in the event of collision, and to facilitate the understanding of the present invention. A conventional body coupling structure will be described with reference to FIGS. 1 and 2.

1 is a perspective view showing the configuration of a typical vehicle frame, Figure 2 is a cross-sectional view showing a body coupling structure of a conventional vehicle frame.

First, as shown in FIG. 1, the frame is roughly composed of a side member 2 extending along the longitudinal direction of the vehicle and a cross member 1 connecting the side members 2. The member 2 is attached with a plurality of fixing brackets 4 for mounting the body.

Next, FIG. 2 shows damping rubbers 10 and 12 that are installed to absorb vibrations or shocks transmitted from the road surface when the body is mounted using the fixing bracket 4. As such, the damping rubber (10, 12) is installed between the fixing bracket (4) and the body (8) of the frame, and then has a coupling structure for fastening with a nut (16) by fitting the fixing bolt (14).

In the conventional body coupling structure of the automobile frame having such a configuration, when the position between the body and the frame does not match, the damping effect is reduced, in particular, off-road or mountain uneven road surface driving In this case, there is a problem that the riding comfort is reduced by the impact transmitted from the road surface through the frame.

In order to solve the above problems, the present invention separates the damping rubber installed between the fixing bracket and the body of the frame into two, and then installs a tension spring by inserting the guide tube to the damping rubber, thereby preventing the damping force generated at this time. It is an object of the present invention to provide a body coupling structure of the frame for a vehicle that can sufficiently attenuate the vibration generated between the frame and the body by.

1 is a perspective view showing the configuration of a typical vehicle frame

Figure 2 is a cross-sectional view showing a body coupling structure of a conventional vehicle frame

Figure 3 is a cross-sectional view showing a body coupling structure of the vehicle frame of the present invention

♣ Explanation of symbols for the main parts of the drawing

4: fixing bracket 8: body

12: dustproof rubber 14: fixing bolt

16: Nut 20, 22: First and second damping rubber

18, 24, 26: Washers 28, 30: 1st, 2nd guide tube

32, 34: spring seat 36: tension spring

The object of the present invention described above is a body of an automobile frame for mounting a body on a frame by using a nut that is fastened to a fixing bolt through a fixing bolt inserted from the body and a vibration-proof rubber from the bottom of the fixing bracket attached to the frame. In the coupling structure, the first damping rubber disposed under the body via the washer, the first guide tube inserted into the first damping rubber, and the second damping rubber disposed on the fixing bracket of the frame via the washer And a second guide tube inserted into the second damping rubber and moving up and down within the first guide tube, and fitted into the space between the first guide tube and the second guide tube by the upper spring seat and the lower spring seat. It is achieved by the body coupling structure of the frame for the vehicle, characterized in that composed of a tension spring.

Hereinafter, with reference to the accompanying Figure 3 will be described in detail with respect to the body coupling structure of the vehicle frame according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a body coupling structure of the frame for a vehicle of the present invention, the same parts as the conventional frame and body coupling structure described in Figures 1 and 2 are denoted by the same reference numerals.

As shown, in the present invention, the damping rubber disposed between the fixing bracket 4 and the body 8 of the frame, unlike the conventional structure, was configured by separating into two. In addition, a plurality of guide tubes 28 and 30 are inserted into these two damping rubbers 20 and 22, respectively, and a high elastic tension coil spring is provided in the space formed between these tubes 28 and 30. (36) was inserted to increase the damping force.

In the lower part of the fixing bracket 4 attached to the frame, as in the prior art, the washer 18 and the anti-vibration rubber 12 were inserted, and then assembled by assembling the nut 16 to the fixing bolt 14.

In more detail, the first damping rubber 20 is disposed below the body 8 via the washer 24, and then the first guide tube 28 is inserted therein, and the second damping rubber ( 22) was disposed above the fixing bracket 4 of the frame via the washer 26, and then inserted therein the second guide tube 30 moving up and down within the first guide tube 28.

In addition, an upper spring seat 32 is installed in the first guide tube 28, and a lower spring seat 34 is installed in the second guide tube 30, and then these spring seats 32, 34 ) Is equipped with a high elastic tension spring (36).

Here, the first guide tube 28 embedded in the first damping rubber 20 is formed to have a larger diameter than the first guide tube 28 embedded in the second damping rubber 22, thereby forming these tubes. The tension spring 36 was provided in the space part formed between (28) and (30). Therefore, when vibration or shock is transmitted from the outside, the second guide tube 30 moves up and down within the first guide tube 28 to absorb the impact by the elastic force of the tension spring 36.

Therefore, the first damping rubber 20 and the second damping rubber 22 absorb vibration while maintaining a constant distance through the first guide tube 28 and the second guide tube 30 in a state spaced apart from each other. . At this time, since the first damping rubber 20 and the second damping rubber 22 move up and down along the same axis through the first guide tube 28 and the second guide tube 30, the same frame as the conventional frame and the like. The fall of damping force by mismatch between bodies can be prevented.

Body coupling structure of the vehicle frame according to the present invention described above by installing a tension spring by inserting a guide tube to the two damping rubber installed between the fixing bracket and the body of the frame, the damping force generated by these springs and damping rubber By sufficiently attenuating the vibration generated between the frame and the body has the effect of improving the riding comfort.

Claims (1)

The fixing bolt 14 inserted from the body 8 and the nut 16 fastened to the fixing bolt 14 via the dustproof rubber 12 from the lower part of the fixing bracket 4 attached to the frame. In the body coupling structure of the automobile frame for mounting the body (8) on the frame, the first damping rubber 20 disposed below the body (8) via a washer (24), and the first damping A second damping rubber 22 disposed on the fixing bracket 4 of the frame via a first guide tube 28 inserted into the rubber 20, a washer 26, and the second damping rubber ( The first guide tube 28 is formed by the second guide tube 30 inserted into the second guide tube 30 and moving up and down within the first guide tube 28, and the upper spring seat 32 and the lower spring seat 34. ) And a tension spring (36) fitted in the space between the second guide tube (30). Of the body the coupling structure.