JP2559500Y2 - Vehicle exhaust pipe support bracket structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support bracket for supporting and fixing a vehicle exhaust pipe to a floor member.

[0002]

2. Description of the Related Art Conventionally, a structure for supporting and fixing an exhaust pipe to a vehicle body has an L-shaped support bracket c fixed to a vertical surface b of a side member or a cross member a as shown in FIG.
The exhaust pipe d is supported at the tip of the support bracket c by a support band e.

[0003] Also, Japanese Utility Model Application Laid-Open No. 62-156030 discloses
The supporting structure of the vehicle exhaust pipe is the side frame (F)
(The symbols in parentheses are those described in the gazette.)
The horizontal part of the L-shaped bracket (3) protruding from the
The horizontal portion of the L-shaped bracket (2) projecting from (1)
Parallel locking holes (42) penetrating through the vibration isolating rubber body (4),
(43).

[0004]

[Devised Problems to be Solved However, the above view
In the structure for supporting and fixing the exhaust pipe on the vehicle body side shown in FIG. 4, it is necessary to separate the floor panel and the exhaust pipe to some extent to prevent heat. Also, a side member or a cross member a
Since the L-shaped support bracket c is bolted using a weld nut fixed to the vertical surface b, the weld nut cannot be fixed to the lower end of the vertical surface b. become longer. The vehicle body vibration transmitted from the exhaust pipe d acts on the L-shaped bracket c, and a moment acts on a fixed portion of the L-shaped bracket c. Since the wall surface rigidity of the vertical surface b of the cross member a for fixing the L-shaped bracket c is low, there is a problem that the moment causes the vertical surface b to be deformed due to the twisting. As a countermeasure against this, it is conceivable to increase the thickness of the cross member a or add a bulkhead, but the cost increases.

In addition, Japanese Utility Model Application Laid-Open No. 62-156030
The L-shaped bracket (3) is used to support the vehicle exhaust pipe.
Directly protruding from the lower surface of the side frame (F)
Therefore, the support rigidity is low, and there is a possibility of twisting or deformation.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is difficult for the cross member to locally deform.
An exhaust pipe support bracket structure of the high have durable vehicle
The purpose is to provide it at low cost .

[0007]

As a specific means for achieving the above object, a base plate of a support bracket is brought into contact with a lower surface of a floor member, and a position of the base plate is lower than a position of both corner portions on a lower surface of the floor member. One end of the support bracket that supports the exhaust pipe,
Extend the end in the width direction of the floor member, and
An exhaust pipe support bracket structure for a vehicle is provided, which is fixed along a lower surface of a base plate .

[0008]

According to the exhaust pipe support bracket structure for a vehicle described above, the base plate of the support bracket is fixed to the lower surface of the floor member with both ends protruding beyond the lower corners of the floor member . Then, plug one end
Causes extended in the width direction of the lower member, the base plate of
The exhaust pipe is supported by a support bracket fixed along the lower surface .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a vehicle exhaust pipe support bracket structure according to the present invention, and FIG. 2 is a side view of the same. Floor panel 1
Is fixed to the lower surface of the floor member 2, a weld nut 3 is fixed to the lower surface of the floor member 2, and the base plate 4 is fastened by mounting bolts 5. The width of the base plate 4 is larger than the width of the floor member 2, and both end portions 4 a of the base plate 4 are made to protrude from both corner portions 2 a, 2 a below the floor member 2. Then, the one end 6 b is extended in the width direction of the floor member 2.
Other end 6a of the support bracket 6 which was issued, the base plate 4
Are joined along the lower surface by welding or the like. The support bracket 7 is configured as described above.

[0010] The supporting bracket 6, to form a horizontal support portion 9 provided with a retaining head 8 at one end 6b, attaching the lifting member 10 made of rubber to the support portion 9. On the other hand, a suspension rod 12 is welded to the exhaust pipe 11 to
2a is made to correspond to the support portion 9 of the support bracket 6, and the horizontal portion 12a of the suspension rod 12 is suspended by the suspension member 10.

In the exhaust pipe support bracket structure for a vehicle according to the above embodiment, both end portions 4a of the base plate 4 fastened to the floor member 2 are connected to both corner portions 2 below the floor member 2.
a and 2a, the rigidity with respect to the vertical portion of the fastening portion of the mounting bolt 5 is high even if a moment based on the vibration of the exhaust pipe 11 transmitted to the support bracket 7 acts on the base plate 4. The floor member 2 can be supported at three points with the vertical wall, and the floor member 2 is less likely to be locally deformed. One end of the support bracket 6
6b extends in the width direction of the floor member 2,
The other end 6a of the support bracket 6 is attached to the lower surface of the base plate 4.
The base plate 4 is fixed along the support
It is reinforced by the racket 6 to increase support rigidity.

[0012] Then, the mounting Rukoto support bracket 7 as described above to the lower surface of the floor member 2, can be the distance to the lifting point of the exhaust pipe 11 is shorter becomes the support bracket 7 short, resulting in The acting moment can be reduced. Furthermore, the structure of the present invention described above ensures sufficient rigidity, and the resonance frequency of the support bracket 7 is higher than that of the conventional structure (see FIG. 3).
For this reason, there are advantages such as improvement of durability and reduction of in-vehicle noise.

[0013]

The present invention has the above configuration and operation, and fixes the base plate of the support bracket to the lower surface of the floor member with both ends protruding from the positions of both lower corners of the floor member. And one end of the floor member
Causes extending in the width direction and in the <br/> intended to support the exhaust pipe supporting bracket and <br/> fixed along the lower surface of the base plate, based on the vibration of the exhaust pipe transmitted to the support bracket
Even if a moment acting on the base plate
Rigid floor member against vertical fixing force and vertical force
It can be supported at three points with the vertical wall of the ba
The support bracket reinforces the base plate,
The support rigidity of the bracket is increased, and the durability can be improved.
Further, excellent effects such as increasing the resonance frequency of the support bracket and contributing to reduction of vehicle interior noise can be exhibited.

[Brief description of the drawings]

FIG. 1 is a side view of an exhaust pipe support bracket of a vehicle according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a graph comparing resonance frequencies.

FIG. 4 is a side view showing a conventional structure.

[Explanation of symbols]

2. . . Floor members, 2a, 2a. . . Corners,
4. . . Base plate, 4a, 4a. . . Both ends,
6. . . Support bracket, 6b. . . One end ,
7. . . 8. support bracket, . . Support, 1
1. . . Exhaust pipe.

Claims (1)

(57) [Scope of request for utility model registration] 1. A support plate in which a base plate of a support bracket abuts against a lower surface of a floor member, and both ends of the base plate protrude from positions of both corners on the lower surface of the floor member and are fixed, and a support for supporting an exhaust pipe. One end of the bracket
Extend in the width direction of the floor member, and
An exhaust pipe support bracket structure for a vehicle, wherein the exhaust pipe support bracket structure is fixed along the lower surface of the plate .