JPH05213075A - Support structure of exhaust pipe - Google Patents

Abstract

PURPOSE:To make the support of an exhaust pipe sure by fitting the exhaust pipe of an automobile to a vehicle body frame by means of a fixation type elastic member and a position adjustable elastic member. CONSTITUTION:The key position of an exhaust pipe 4, for example, the vicinity of the center of gravity is suspended at a vehicle body frame 3 through an elastic member 1 and fixation is made, and fitting holes 18, 19 are formed in a longitudinal direction and latitudinal direction at the elastic member 1, and the elastic member 1 is slidably provided by inserting the respective rods 20, 21 of brackets 5, 6 on the vehicle body frame side and the exhaust pipe 4 side into the two fitting holes 18, 19 of the elastic member 1. As a result, position shift at the time of exhaust pipe 4 fitting is corrected and the deformation of the exhaust pipe 4 can be prevented. Also, the twist of the elastic member 1 becomes small, so durability is improved. Also, vibration noise is reduced, so riding comfortability becomes better.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supporting exhaust pipes arranged in the longitudinal direction of a vehicle body of an automobile.

[0002]

2. Description of the Related Art Conventionally, an exhaust pipe, which is arranged in the lower part of an automobile in the front-rear direction of a vehicle body, is suspended from the vehicle body via an elastic member. The attachment of the elastic member to the vehicle body side and the exhaust pipe side will be described with reference to FIGS. 6 to 9. In the mounting device shown in FIG. 6, mounting plates 2 are fixed to both sides of the elastic member 1, and fixed to the brackets 5 and 6 mounted on the vehicle body frames 3 and 4 with bolts 7. In the mounting device shown in FIG. 7, a hole 8 is directly formed in the elastic member 1, and rods 9 and 10 formed in brackets 5 and 6 are fitted and fixed to fix the exhaust pipe 4. The mounting device shown in FIG. 8 has a pair of ring-shaped elastic members 1
Is a hook type that is supported by being hooked on the tip of a bracket 5 attached to the vehicle body frame 3 and the exhaust pipe 4. The mounting device shown in FIG. 9 uses the elastic member 1 shown in FIG.
The position of the exhaust pipe 4 can be adjusted by adjusting 12.

When fixing the exhaust pipe 4, it is preferable to select the optimum one depending on the mounting location and suspend it from the vehicle body frame 3. The main location is as shown in FIG. In the vicinity, at the muffler 15 and near the exit. In addition, firmly fix the muffler
61-37023), and a link structure that supports the exhaust pipe (see Japanese Utility Model Laid-Open No. 62-82318).

[0004]

However, even if the essential points of the exhaust pipe 4 are firmly fixed, if the mounting position of the engine 13 is deviated as shown in FIG. Twisting occurs, and as shown in FIG. 12, the front and rear mounting positions are displaced due to the size and mounting error of the exhaust pipe 4, and the elastic member 1 is greatly twisted, resulting in large vibration noise and adverse effects.

Further, among the individual mounting devices, the one shown in FIG. 6 is a bracket 5 for mounting on the vehicle body side and the exhaust pipe side.
Due to the mounting error of 6, the twisting of the elastic member 1 is likely to be large, which may cause vibration noise. Further, the one shown in FIG. 7 has a problem in durability such as contact with the vehicle body due to a large variation in the mounting positions at the front and rear ends of the exhaust pipe 4. In the structure shown in FIG. 8, the elastic member 1 may come off when the exhaust pipe 4 is largely displaced when traveling on a rough road. Further, since the structure shown in FIG. 9 has a complicated structure, there is a problem that the cost becomes high.

An object of the present invention is to provide a support structure for an exhaust pipe which has a simple structure and is easily attached.

[0007]

In order to achieve the above object, the present invention hangs the essential points of an exhaust pipe in a vehicle in which an exhaust pipe extending in the vehicle front-rear direction is hung on a vehicle body frame via an elastic member. The elastic members to be installed are fixed to the body frame side and the exhaust pipe side, respectively, and mounting holes are formed in the elastic members that suspend other parts in the front-rear direction and the left-right direction. Is inserted through the two mounting holes, and the elastic member is slidably provided.

[0008]

Since the present invention has the structure for supporting the exhaust pipe configured as described above, first, the essential points of the exhaust pipe, for example, the vicinity of the center of gravity are fixed to the vehicle body frame through the elastic member, and the other portions are elastic member. Since the rods of the brackets are inserted through the mounting holes formed in the above, the brackets can be slidably mounted on the vehicle body frame, the displacement of the exhaust pipe is corrected, and the deformation of the exhaust pipe can be prevented. Also, the installation procedure becomes rational.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 5, the exhaust pipe 4 is a joint part.
The exhaust manifold 16 is connected at 14, and a muffler 15 is provided at an intermediate portion. There is a center of gravity in the vicinity of the muffler 15, and a mounting device shown in FIGS. 1 and 3 is provided at a place A where the exhaust pipe 4 is hung, and another place B is provided with a mounting device shown in FIGS. Has been.

The elastic member 1 of the mounting device shown in FIGS. 1 and 3 has an annular shape, and its axis is oriented in the width direction of the vehicle body.
Are opened in parallel. The bolt 7 is inserted into the mounting hole 17 and screwed to the bracket 5 fixed to the vehicle body frame 3 and the bracket 6 fixed to the exhaust pipe 4.

The elastic member 1 of the mounting device shown in FIGS. 1 and 2 has an annular shape, its axis is oriented in the front-rear direction of the vehicle body, a mounting hole 18 is formed in the lower part in the front-rear direction, and a width direction is formed in the upper part. A mounting hole 19 is formed. The rods 20 and 21 of the brackets 5 and 6 fixed to the vehicle body frame 3 and the exhaust pipe 4, respectively.
As shown in FIG. 4, the mounting positions of the exhaust pipe 4 can be moved in the front-rear, left-right direction by the predetermined lengths a and b of the rods 20 and 21 by inserting these into the mounting holes 19 and 18.

By mounting the exhaust pipe 4 on the vehicle body frame 3 in this way, workability is improved in the mounting process and deformation of the exhaust pipe 4 is prevented. Further, when the joint portion 14 is flexible, the fixed position and the sliding position of the exhaust pipe 4 can be changed.

[0012]

As described above, according to the present invention, the exhaust pipe can be surely attached to the vehicle body frame, the deformation at the time of attaching the exhaust pipe can be prevented, and the elastic member can be prevented from being twisted. .. Further, there is no large displacement of the mounting position of the exhaust pipe, the problem of contact with the vehicle body does not occur, and the durability is improved. Further, the structure is simple, the mounting procedure is established, workability is good, and the conventional technology can be applied, so that the cost can be reduced. Further, since the vibration noise is reduced, the riding comfort is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an exhaust pipe support structure according to an embodiment of the present invention.

FIG. 2 is a side view of a main part of the exhaust pipe support structure of the embodiment, in which a mounting position is variable.

FIG. 3 is a front view of a main part of the exhaust pipe support structure according to the embodiment, which has a fixed mounting position.

FIG. 4 is an explanatory view showing a variable region of a mounting position of the exhaust pipe support structure of the embodiment.

FIG. 5 is a perspective view of the entire exhaust pipe of the embodiment.

FIG. 6 is a front view of a conventional exhaust pipe support structure.

FIG. 7 is a front view of another conventional exhaust pipe support structure.

FIG. 8 is a front view of another conventional support structure for an exhaust pipe.

FIG. 9 is a front view of another conventional support structure for an exhaust pipe.

FIG. 10 is a schematic view showing a structure in which a conventional exhaust pipe is entirely supported.

FIG. 11 is a schematic view showing that the entire conventional exhaust pipe is deformed by changing the engine position.

FIG. 12 is a schematic view showing that the entire conventional exhaust pipe is deformed by changing the mounting position.

[Explanation of symbols]

 1 Elastic member 3 Body frame 4 Exhaust pipe 5 Bracket 6 Bracket 18 Mounting hole 19 Mounting hole 20 Rod 21 Rod

Claims (1)

[Claims] 1. In a vehicle in which an exhaust pipe extending in the front-rear direction of a vehicle body is hung on a vehicle body frame via elastic members, elastic members for suspending essential parts of the exhaust pipe are fixed to the vehicle body frame side and the exhaust pipe side, respectively. Then, mounting holes are formed in the front and rear direction and the left and right direction in the elastic member that suspends the other portion, and the rods of the brackets on the vehicle body frame side and the exhaust pipe side are inserted into the two mounting holes to slide the elastic member. Exhaust pipe support structure characterized by being movably installed.