JP3047774B2 - Exhaust pipe support bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe support bracket for a vehicle.

[0002]

2. Description of the Related Art An exhaust pipe provided at a lower portion of a vehicle body has one end connected to and supported by an engine, and the other end supported by the vehicle body. An exhaust pipe support bracket is attached to the vehicle body, and supports the other end of the exhaust pipe.

FIG. 3 shows a typical example of a conventional exhaust pipe support bracket. The exhaust pipe support bracket 1 has an L-shaped round pipe exhaust pipe support section 11 and a flat mounting having a vertical groove. The exhaust pipe supporting portion 11 and the mounting portion 13 are integrated by fitting a vertical piece of the exhaust pipe supporting portion 11 into a vertical groove of the mounting portion 13 and welding.

The exhaust pipe support bracket 1 is mounted on the side member 5 by spot welding the mounting portion 13 and the side member 5 on the vehicle body side as shown in FIG. On the other hand, a support shaft 7 is attached to the end face of the muffler 6 provided in the exhaust pipe.
1 is attached to the through-hole of the thick rubber member 8 having two through-holes, and the exhaust pipe support portion 11 of the exhaust pipe support bracket 1 and the support shaft 7 of the bracket 7 respectively.
The exhaust pipe is suspended and supported integrally with the muffler 6 by press-fitting the exhaust pipe 1.

The exhaust pipe support bracket 1 is made up of two members, a round bar bent in an L-shape and a flat plate having a vertical groove, and the two members are connected by welding. High cost. Therefore, like the exhaust pipe support bracket 2 shown in FIG.
1 and a mounting portion 23 having a flat plate shape and a flange formed on the outer periphery.
In some cases, the manufacturing cost is reduced by pressing one sheet metal using a press die.

Road noise and engine vibrations are transmitted to the exhaust pipe support bracket via the vehicle body and the exhaust pipe. Depending on the running condition of the vehicle,
A considerable load is applied to the exhaust pipe support bracket. In order to secure the strength to support this, it is necessary to sufficiently increase the rigidity of the exhaust pipe support bracket. In addition, the exhaust pipe support bracket may resonate due to the vibration and the like, and noise may be generated due to the resonance. In order to prevent the noise, the rigidity needs to be sufficiently high.

However, in the above-mentioned conventional exhaust pipe support brackets, the load of the exhaust pipe is supported by a straight exhaust pipe support portion extending laterally from a flat attachment portion welded to the vehicle body. Therefore, there is a limit in maintaining the rigidity, and a sufficient effect cannot be expected by measures such as changing the material of the exhaust pipe support bracket or strengthening the welding.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide an exhaust pipe support bracket which has high rigidity and can be manufactured at low cost.

[0009]

According to the present invention, as shown in FIG. 1A, an integrally formed exhaust pipe support bracket having an exhaust pipe support portion 31 for supporting an exhaust pipe and a mounting portion 33 to be mounted on a vehicle body. 3, the exhaust pipe supporting portion 31 is formed in a straight tubular shape, and the mounting portion 33 is formed in a half-conical shape in which the width gradually increases from one end of the exhaust pipe supporting portion 31.
And the arc-shaped edge 34 is formed in a conical shape.
The exhaust pipe supporting part 31
It is formed into a flange shape .

The edge 34 is connected to a side member of the vehicle body.
To be fixed to the vertical wall of the vehicle.

[0011]

In the exhaust pipe support bracket 3 of the present invention,
The mounting portion 33 extending from the vehicle body into a half-cone shape is hard to deform and has rigidity, and the exhaust pipe support portion 31 can shorten its length by the amount that the mounting portion 33 protrudes from the vehicle body, The rigidity can be maintained with respect to the load of the exhaust pipe applied to the tip that extends in a straight tubular shape. Thus, the rigidity of the entire exhaust pipe support bracket 3 is increased. This exhaust pipe support bracket can be easily formed only by pressing one sheet metal stamped into a predetermined shape.

[0012]

FIG. 1A shows an exhaust pipe supporting bracket according to the present invention.
Shown in The exhaust pipe support bracket has a structure shown in FIG.
A sheet metal plate 4 is formed by press working, and has a straight tubular exhaust pipe supporting portion 31 and a half-split cone-shaped mounting portion 33 having a convex surface which gradually widens from its base and bulges upward. And an arc-shaped edge of the mounting portion 33 is formed as a flange portion 34 which rises to the convex surface side and forms a surface perpendicular to the exhaust pipe support portion 31. The distal end of the exhaust pipe support portion 31 is a bump-shaped stopper 32 having an enlarged diameter.

The exhaust pipe support bracket 3 will be described in more detail together with its manufacturing method. As shown in FIG. 1 (B), one flat plate-shaped metal plate 4 is prepared by punching the distal end portion 41 in a band shape and the base end portion 42 in a fan shape. First, the base end portion 42 is connected to the distal end portion 4.
Pressing is performed on the convex surface rising from 1 into an inclined shape to form a half-split cone shape, and the arc-shaped edge is bent to form a flange portion 34 rising on the convex surface side to form the mounting portion 33. I do. Next, the distal end portion 41 is bent in a gutter shape so that the same side as the mounting portion 33 has a convex surface, and the end of the gutter portion is further drawn so as to have a tubular shape. 31 are formed. At the time of this edge drawing, the side edges on both sides of the mounting portion 33 connected thereto are also drawn. The processing is completed by forming the stopper 32 by processing the tip of the exhaust pipe support portion 31 into a hump shape.

The exhaust pipe supporting bracket 3 thus processed is fixed by spot welding the flange portion 34 to the vertical wall of the side member 5 as shown in FIG. The fixing position is to provide the bulkhead 9 on the side member 5,
It is desirable that the position is in the vicinity of the position, whereby vibration transmitted to the exhaust pipe support bracket 3 can be suppressed.

A tapered bracket 7 is welded to an end surface of a muffler 6 provided in the middle of the exhaust pipe, and a support shaft 71 protrudes from a tip of the bracket 7. The support shaft 71 and the exhaust pipe support portion 31 of the exhaust pipe support bracket 3 are arranged in parallel, and these are pressed into the respective through holes of the thick rubber member 8 provided with two through holes. In this case, the hump-shaped stoppers 32 and 72 formed at the tip of the exhaust pipe support portion 31 and the tip of the support shaft 71 serve to prevent the stopper from coming off. Thus, the exhaust pipe is integrated with the muffler 6 and the rubber member 8.
And is fixedly supported by the exhaust pipe support bracket 3 via the

The exhaust pipe support bracket 3 includes a mounting portion 33.
Project from the side member 5 in a half-split cone shape, so that it is hardly deformed by the force applied to the tip of the mounting portion 33 and has rigidity. The exhaust pipe supporting portion 31 connected to the portion is protruded from the side member 5 by the mounting portion 33.
The length can be shortened, and the rigidity can be maintained with respect to the load of the exhaust pipe applied to the distal end extending in a tubular shape. Thus, the exhaust pipe support bracket 3 has high rigidity as a whole, so that the exhaust pipe support bracket 3 can be strong in strength against the load of the exhaust pipe from the muffler 6. In addition, it is possible to reduce generation of noise and vibration due to resonance of the exhaust pipe support bracket 3 with vibration transmitted from the side member 5 or the like. Further, in order to manufacture such an exhaust pipe support bracket 3, since a sheet metal stamped into a certain shape can be prepared as a part and formed only by bending, it can be manufactured at low cost.

[0017]

As described above, in the exhaust pipe support bracket of the present invention, the rigidity can be increased to increase the strength, and noise and vibration can be reduced. Further, the exhaust pipe support bracket of the present invention can be manufactured easily and at low cost by processing one sheet metal.

[Brief description of the drawings]

FIG. 1A is a perspective view of an exhaust pipe support bracket of the present invention, and FIG. 1B is a plan view of a sheet metal on which the exhaust pipe support bracket of the present invention is formed.

FIG. 2 is a view showing an aspect in which an exhaust pipe is supported by an exhaust pipe support bracket of the present invention.

FIG. 3 is a perspective view of a conventional exhaust pipe support bracket.

FIG. 4 is a view showing a mode in which an exhaust pipe is supported by a conventional exhaust pipe support bracket.

FIG. 5 is a perspective view of another conventional exhaust pipe support bracket.

[Explanation of symbols]

 3 Exhaust Pipe Support Bracket of the Present Invention 31 Exhaust Pipe Support 33 Mounting Section 34 Edge (Flange) 4 Bracket Forming Metal 41 Tip 42 Base End 5 Side Member (Car Body) 6 Muffler (Exhaust Pipe)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60K 13/04 F01N 7/08

Claims (1)

(57) [Claims] 1. An integrally formed exhaust pipe support bracket having an exhaust pipe support for supporting an exhaust pipe and a mounting part mounted on a vehicle body, wherein the exhaust pipe support is formed in a straight tubular shape, and Is formed in a half-cone shape whose width gradually increases from one end of the exhaust pipe support portion, and rises to the convex side of the conical shape at an arc-shaped edge.
Form a flange that forms a vertical plane with respect to the exhaust pipe support
An exhaust pipe support bracket for a vehicle, wherein the flange portion is fixed to a vertical wall of a side member of the vehicle body .