KR19980039273A - Mounting Structure of Automobile Exhaust System - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of an automobile exhaust system, in order to provide a mounting structure of a vehicle exhaust system of a new type in which the exhaust system of a vehicle is firmly fixed to improve durability and reduce flow. In the exhaust device of a vehicle provided with an exhaust pipe installed to be discharged, and a silencer installed to reduce noise at the rear end of the exhaust pipe, a welding nut welded to the exhaust device, and a fastening bolt fastened to the welding nut And a fixing member comprising a fixing nut fastened to the fastening bolt, a buffer member formed to insert the fixing member, a first coupling bracket coupled to an outer circumferential surface of the buffer member, and the buffer member. Second coupling bracket whose upper surface is welded to the bottom of the car body so that the coupling bracket is mounted , It is made of a plurality of fastening members.

Description

Mounting Structure of Automobile Exhaust System

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of an automobile exhaust system, and more particularly, to an automobile exhaust apparatus including an exhaust pipe and a silencer mounted on a body bottom portion of an automobile so that the flow is reduced more firmly, thereby reducing flow. It relates to the mounting structure of.

In general, an exhaust manifold includes an exhaust manifold that aggregates exhaust gas generated from each cylinder of an engine, an exhaust pipe that exhausts exhaust gas into the atmosphere, and a silencer that reduces exhaust noise. It is.

On the other hand, the exhaust device configured as described above when the exhaust device is mounted on the bottom of the vehicle body due to the vibration transmitted from the engine room, and the noise and vibration generated according to the pressure and temperature of the exhaust gas discharged from the engine, It is mounted by a mounting structure having vibration absorption so that vibration is not transmitted to the body of the vehicle.

FIG. 1 is an exploded perspective view showing a mounting structure of a conventional vehicle exhaust apparatus, and a plurality of fastening holes 10a drilled to a predetermined inner diameter on a member having a predetermined shape made of rubber material to absorb vibration as shown in the drawing. ) And a predetermined outer diameter at which one end is fitted to the bracket 10 and the fastening hole 10a of the bracket 10, and the other end is welded to a predetermined position of the silencer 22 or the exhaust pipe 24 of the vehicle. And a first connection member 12 having a length and a second connection member having one end fitted into the coupling hole 10a of the bracket 10 and the other end welded to the bottom of the vehicle body 26. 14).

However, since the bracket 10 is fixed by the first connection member 12 and the second connection member 14 without a separate support point, the mounting structure of the conventional vehicle exhaust system as described above reduces the noise due to severe flow. There was a problem that the effect could not be sufficiently exerted, the durability was weak, and the exhaust device could not be fixed firmly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a mounting structure of a vehicle exhaust apparatus of a new type in which the exhaust system of the vehicle is firmly fixed to improve durability and reduce flow.

In order to achieve the above object, the present invention provides an exhaust pipe of a vehicle provided with an exhaust pipe provided so that the exhaust gas of the vehicle is discharged, and a silencer provided to reduce noise at the rear end of the exhaust pipe. The fixing member consists of a welding nut of a predetermined shape welded to a predetermined position on the outer surface of the device, a fastening bolt fastened to the welding nut and a fastening nut fastened to the fastening bolt, and a predetermined radius and length to insert the fastening member. A buffer member having a predetermined inner diameter penetrates to both side surfaces of the hemispherical body having a recessed portion having a predetermined width and depth at a central portion of the outer circumferential surface thereof, and a central portion of the plate-shaped member having a predetermined width and length so as to fit into the recessed portion of the buffer member. A plurality of first fastening holes having a predetermined inner diameter are bent and curved at a predetermined radius of curvature. The upper surface is welded to the bottom of the vehicle body so that the first coupling bracket and the first coupling bracket including the shock absorbing member are mounted and correspond to the first fastening holes at both ends of the plate member having a predetermined horizontal and vertical length. A plurality of fastenings inserted into the first fastening holes so that the second fastening brackets formed by drilling the second fastening holes and the first fastening brackets including the buffer member are fastened to the second fastening holes of the second fastening brackets; Characterized in that the member.

1 is an exploded perspective view showing a mounting structure of a conventional vehicle exhaust system

Figure 2 is an exploded perspective view showing a mounting structure of the vehicle exhaust apparatus according to the present invention,

3 is a perspective view showing an installation state according to the present invention.

* Explanation of symbols for the main parts of the drawings

20: exhaust device, 22: silencer,

24: exhaust pipe, 26: car body,

30: welding nut, 32: fixing member,

32a: tightening bolt, 32b: fixing nut,

34: buffer member, 34a: insertion hole,

34b: recessed part, 36: first coupling bracket,

36a: first fastening hole, 38: second coupling bracket,

38a: 2nd fastening hole, 39: fastening member.

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

Figure 2 is an exploded perspective view showing a mounting structure of the vehicle exhaust apparatus according to the present invention, Figure 3 is a perspective view showing an installation state according to the present invention, as shown in the mounting structure of the vehicle exhaust apparatus according to the invention as shown The exhaust pipe 24 is installed to discharge the exhaust gas generated from the engine, and the rear end of the exhaust pipe 24 is installed to reduce the noise generated according to the pressure and temperature of the exhaust gas discharged from the engine In the exhaust device 20 of a vehicle provided with a silencer 22, the welding nut 30 of the predetermined shape welded to a predetermined position on the outer surface of the exhaust device 20, and is fastened to the welding nut 30 Fastening of the fastening bolt 32a and the fastening bolt 32a having a round rod-shaped fastening portion 32c having a thread cut to one side end and a head portion 32d having a predetermined diameter formed on the other end thereof. part( The fixing member 32 which consists of the fixing nut 32b fastened to 32c is formed.

On the other hand, the insertion hole 34a having a predetermined inner diameter penetrates to both sides of the hemispherical body having a predetermined radius and length so that the fixing member 32 is inserted and the recessed portion 34b is formed at a predetermined width and depth in the center of the outer peripheral surface thereof. A plurality of first parts having a predetermined curvature radius and a central portion of a plate-shaped member having a predetermined width and length to be fitted and coupled to the member 34 and the recess 34b of the shock absorbing member 34 and having predetermined internal diameters on both end surfaces thereof. The upper surface is welded to the bottom surface of the vehicle body 26 so that the first coupling bracket 36 with the fastening hole 36a and the first coupling bracket 36 including the buffer member 34 are mounted thereon. A second coupling bracket 38 formed by drilling a second coupling hole 38a to correspond to the first coupling hole 36a at both ends of the plate member having a predetermined horizontal and vertical length, and the second coupling bracket 38; The buffer part is fastened to the second fastening hole 38a of It consists of a plurality of fastening members 39 are inserted into the first fastening hole (36a) so that the first coupling bracket 36 including the ash (34) is fixed.

The operation of the present invention as described above is as follows.

As shown in FIG. 3, the welding nut 30 is welded to a predetermined position on the outer surface of the vehicle exhaust apparatus 20 including the exhaust pipe 24 and the silencer 22, and the bottom portion of the vehicle body 26 is welded. In the state where the first coupling bracket 36 including the shock absorbing member 34 is mounted on the second coupling bracket 38 welded at a predetermined position by the predetermined fastening member 39, the shock absorbing member 34 The fastening bolt 32a is inserted into the insertion hole 34a, and the fastening nut 32b is pretightened through the fastening portion 32c of the fastening bolt 32a.

In this state, while fastening the end of the fastening portion 32c of the fastening bolt 32a to the welding nut 32, while applying a tightening force to the fixing nut 32 of the buffer member 34 If it is fixed tightly on one side of the assembly is complete.

When the assembly is completed as described above, when the vehicle is started, vibrations transmitted from the engine to the exhaust device 20 and noise and vibration generated by the pressure and temperature of the exhaust gas discharged from the engine are The vibration is firmly fixed by the mounting structure of the vehicle exhaust device described above, and the vibration transmitted to the vehicle body 26 through the fastening bolt 32a is absorbed by the shock absorbing member 34, thereby vibrating the interior of the vehicle. Noise is not transmitted.

According to the mounting structure of the vehicle exhaust system according to the present invention as described above, the exhaust device of the vehicle is fixed to the shock absorbing member that is firmly fixed to the vehicle body by the first coupling bracket and the second coupling bracket, so that the flow of the vehicle This is to reduce the noise can fully exhibit the effect, the durability is to increase the effect.

Claims (1)

In the vehicle exhaust apparatus 20 provided with the exhaust pipe 24 installed so that the exhaust gas of the automobile may be discharged, and the silencer 22 provided in the rear end of the exhaust pipe 24 to reduce noise, A welding nut 30 having a predetermined shape welded to a predetermined position on the outer surface of the exhaust device 20, a fastening bolt 32a fastened to the welding nut 30, and a fastening nut fastened to the fastening bolt 32a ( 32b) and the insertion hole 34a having a predetermined inner diameter penetrates to both sides of the hemispherical body having a predetermined radius and length so that the fixing member 32 is inserted, and has a predetermined width and depth in the center of the outer peripheral surface thereof. A buffer member 34 having a lower concave inlet 34b and a central portion of a plate-shaped member having a predetermined width and length to be fitted into and coupled to the concave inlet 34b of the buffer member 34 and curved at a predetermined radius of curvature. Has a plurality of first bodies having a predetermined inner diameter The upper surface is welded to the bottom surface of the vehicle body 26 so that the first coupling bracket 36 including the hole 36a and the first coupling bracket 36 including the shock absorbing member 34 are mounted. The second coupling bracket 38 is formed by drilling the second coupling hole 38a to correspond to the first coupling hole 36a at both ends of the plate member having a vertical length, and the second coupling bracket 38 Is composed of a plurality of fastening members 39 are fastened to the second fastening hole (38a) is inserted into the first fastening hole (36a) so that the first coupling bracket (36) including the buffer member 34 is fixed. A mounting structure of an automobile exhaust system, characterized in that.