JPH06328954A - Muffler support structure of automobile - Google Patents

Abstract

PURPOSE:To make it hard for oscillation of a muffler to be transmitted to a car body as well as to curtail the number of parts and assembly manday. CONSTITUTION:A muffler 5 is suspended on a head end part of a rod 3 by welding and connecting a towing hook bracket 2 on a rear end part of a floor side member 1 and welding and connecting the muffler hanger rod 3 on the bracket 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle muffler support structure.

[0002]

2. Description of the Related Art An automobile muffler a is generally arranged at the rear of a vehicle body as shown in FIG. As a support structure of the muffler a, for example, a structure shown in FIG. 7 is known. In the figure, b is a floor panel to which a muffler hanger bracket c is welded. Further, a muffler hanger rod d is welded to the bracket c to suspend the muffler a.

[0003]

By the way, a towing hook is provided separately from the rear portion of the vehicle body. For this reason, the number of parts and the number of assembling steps are increased, which causes a cost increase. In addition, since the muffler hanger rod is installed on the thin floor panel in this structure, the welding area of the muffler hanger bracket must be increased in order to secure sufficient strength, and the welding work is troublesome. It has become. Further, vibration from the muffler is directly transmitted to the floor panel, which is not preferable in terms of earthquake prevention. The present invention solves such a problem by suspending the muffler using the towing hook bracket.

[0004]

The above problems are solved by welding a towing hook bracket to the rear end of the floor side member, welding a muffler hanger rod to the bracket, and attaching a muffler to the tip of the rod. It was solved by suspending.

[0005]

1 shows the structure of the present invention. In the figure,
A floor side member 1 has a towing hook bracket 2 welded to its rear end. Further, an L-shaped muffler hanger rod 3 is welded to the bracket 2 and a muffler 5 is suspended and supported at the tip of the rod 3 via a hanger rubber 4. Reference numeral 6 is a bracket fixed to the rear end surface of the muffler 5.
The hanger rubber 4 is attached.

As shown in detail in FIG. 2, the towing hook bracket 2 has a U-shaped main body portion 2b having a hook engaging hole 2a and a front end portion extending from an edge other than the upper edge of the main body portion 2b. And a pair of left and right ears 2d extending upward from the upper edge of the extending portion 2c. further,
A flange 2e is provided on the edge of the extension 2c. Further, the hook engaging hole 2a is formed as a burring hole by extending the rising portion 2f from the peripheral edge. Then, the left and right ears 2d of the towing hook bracket 2 are inserted into the floor side member 1 from below, the side wall 1a of the floor side member 1 is sandwiched between these ears 2d, and these parts are welded together and the bottoms are joined together. A tongue piece 1c extending downward from the edge of the wall portion 1b is welded to the main body portion 2b of the towing hook bracket 2. On the other hand, the muffler hanger rod 3 is made by bending a pipe material,
The rod 3 is engaged with and welded to the recess 2g provided on the surface of the main body 2b of the towing hook bracket 2. (See Figure 4)

FIG. 5 shows a modification of the present invention. In the same figure, 10 is a press-formed towing hook bracket. The bracket 10 includes a main body 11 having a quadrangular cross section and left and right side walls 11 forming the main body 11.
It is composed of a pair of ears 12 extending upward from a and 11b. A pair of left and right flange-shaped portions 11d are provided on the front wall 11c of the main body portion 11 so as to face each other and extend forward, and these flange-shaped portions 11d are welded together with their upper ends left.
Further, a hook engaging hole 13 is formed in the lower end of the main body 11 in the left-right direction, and the hole 13 is formed as a burring hole by extending a rising portion 13a from the peripheral edge. Also,
An L-shaped muffler hanger rod 14 is pierced in the left-right direction at the upper end of the main body 11, and the rod 14 is welded to the left and right side walls 11a and 11b, respectively. Then, the left and right ears 12 of the towing hook bracket 10
Are inserted into the rear end of the floor side member 1 from below and sandwiched, and these ears 12 are welded to the side wall portions 15a of the floor side member 1, respectively. Further, a tongue piece 15c extending downward from the rear end of the bottom wall 15b of the floor side member 15 is welded to the rear wall 11e of the bracket 10.

[0008]

According to the present invention, since the muffler is supported by using the towing hook bracket fixed to the rear end of the floor side member, the number of parts and the number of assembling steps are reduced, and the cost can be reduced. it can. further,
The towing hook bracket does not need to be extensively welded to the floor side member, which makes the work easier. Moreover, since the vibration from the muffler is transmitted to the floor side member, it has an effect of being advantageous in terms of earthquake prevention.

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of the present invention.

FIG. 2 is a perspective view showing the towing hook bracket of FIG. 1 removed from a floor side member.

FIG. 3 is a view of the towing hook bracket of FIG. 2 viewed from the direction of arrow A.

FIG. 4 is a right side view of FIG.

FIG. 5 is a perspective view showing a modified example of the present invention.

6 is a view seen from the direction of arrow B in FIG.

FIG. 7 is a perspective view showing a conventional example.

FIG. 8 is a side view of the automobile.

[Explanation of reference numerals] 1 floor side member 1c tongue piece 2 towing hook bracket 2a hook engaging hole 2b main body portion 2c extension portion 2d ear portion 2e flange 2f rising portion 2g recessed portion 3 muffler hanger rod 4 hanger rubber 5 muffler 10 towing hook Bracket 11 This end part 12 Ear part 13 Hook engagement hole 13a Rising part 14 Muffler hanger rod 15 Floor side member

Claims (3)

[Claims] 1. A vehicle characterized in that a towing hook bracket is welded to a rear end portion of a floor side member, a muffler hanger rod is fixed to the bracket, and the muffler is suspended at a tip portion of the rod. Muffler support structure. 2. The towing hook bracket includes a main body portion having a hook engaging hole, an extending portion extending forward from an end edge of the main body portion, and a pair of left and right extending upward from the extending portion. 2. The muffler hanger rod is welded to the surface of the main body portion, and the left and right ears are welded to the side wall of the floor side member. Muffler support structure for automobiles. 3. The towing hook bracket has a main body having a closed cross-section structure having a hook engaging hole, and a pair of left and right ears extending upward from an upper edge of the main body. The muffler support structure for an automobile according to claim 1, wherein a muffler hanger rod is horizontally extended through the main body, and the left and right ears are welded to the sidewalls of the floor side member.