JP2001082139A - Support device for exhaust system of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain the displacement of an exhaust system while reducing the vibration transmission to a car body, in the support device of an exhaust system on a vehicle which can support the exhaust system ranging to an engine through an elastic body to the car body. SOLUTION: A pair of right/left support members 1, 2 are fixed on a car body B in its right/left direction at some intervals and a pair of right/left support members 3, 4 are fixed to an exhaust system E in its right/left direction at some intervals and these both support members 1, 2 and 3, 4 are connected respectively to both ends 10, 11 and 12, 13 of the upper right/left and lower right/left of an elastic body C crossing the exhaust system E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting an exhaust system in a vehicle, mainly an automobile.

[0002]

2. Description of the Related Art Conventionally, in an automobile, an exhaust system connected to an exhaust port of an engine is supported at a lower portion of a vehicle body through an elastic body, and the exhaust system is flexibly supported in a vertical direction. 2. Description of the Related Art An exhaust system support device for a vehicle in which displacement of the exhaust system is suppressed to be small in the lateral direction of the vehicle body is already known (see Japanese Patent Application Laid-Open No. 62-289428).

[0003]

By the way, in general, in a device for supporting an exhaust system in a vehicle,. A "displacement restraining function" that restrains the exhaust system from being largely displaced from the vehicle body even when a large external force acts on the exhaust system such as when the vehicle is traveling on a rough road or turning sharply. It is required to have both a “vibration transmission cut-off function” and a “vibration transmission cut-off function” that prevent the vibration transmitted to the exhaust system from being transmitted to the vehicle body by the operation of the engine. In order to increase the static spring constant of the elastic body, and to improve the "vibration transmission blocking function", it is necessary to set the dynamic spring constant of the elastic body low.

However, if the static spring constant is set high in order to improve the "displacement restraining function", the dynamic spring constant also increases, and the "vibration transmission cutoff function" is reduced. However, if the dynamic spring constant is set low in order to improve the "vibration transmission blocking function", the static spring constant also decreases, and the "displacement restraining function" has a contradictory relationship.

Therefore, in actuality, in order to suppress the transmission of vibrations to the vehicle body, the physical properties and shape of the elastic body are determined so that the dynamic vibration constant is reduced by giving priority to the "vibration transmission blocking function". Considering the arrangement, meanwhile, in order to enhance the "displacement restraining function", a means such as providing a large number of support points by an elastic body or providing a stopper on the elastic body itself is used. The current situation is to deal with it.

[0006] The above-described conventional device is not only insufficient to satisfy both the "vibration transmission blocking function" and the "displacement restraining function", and the structure of the elastic body itself is not sufficient. There has been a problem that the cost becomes complicated and the number thereof increases, resulting in a significant increase in cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the "vibration transmission cutoff function" is maintained high by setting a low dynamic spring constant of an exhaust system support device, particularly an elastic body provided therein. In addition, the exhaust system also has a sufficient "displacement restraint function", and the elastic body is simple in structure, achieving the desired function with a single unit, achieving a significant cost reduction. It is a main object of the present invention to provide a new apparatus for supporting an exhaust system in a new vehicle.

[0008]

According to a first aspect of the present invention, an exhaust system connected to an engine is supported at a lower portion of a vehicle body. In the device, the left and right support members on the vehicle body side are fixed to the lower part of the vehicle body at intervals in the direction crossing the exhaust system, and are fixed to the exhaust system at intervals in the direction crossing the exhaust system. A left and right support member on the exhaust system side, a left and right support member on the vehicle body side, and a single elastic body that connects the left and right support member on the exhaust system side, wherein the elastic body crosses the exhaust system And an upper left and right connecting part for connecting the support member on the vehicle body side on the upper left and right sides thereof, and a lower left and right connecting part for connecting the supporting member on the exhaust system side on the lower left and right sides, respectively. According to such characteristics, Exhibits a high static spring constant against vertical and horizontal external forces applied to the exhaust system. In particular, due to the connection structure of the elastic body to the left and right support members on the vehicle body side and the left and right support members on the exhaust system side, the excess Even when a strong external force acts, the relative rotation due to the slip generated at the connecting portion between the support member on the vehicle body side and the exhaust system side and the elastic body is extremely small, and when the exhaust system receives an excessive external force, the elastic body becomes It can be deformed as a whole, not partially, and a high "displacement restraining function" can be exhibited. This allows
In order to improve the "transmission blocking function" of the vibration, the elastic body has a low dynamic spring constant, and its physical properties, shape, etc. are set. The exhaust system can exhibit a sufficient displacement restraining function against the excessive external force. In addition, since both functions can be exhibited by a single elastic body, the number of parts can be reduced and the structure can be simplified.

According to another aspect of the present invention, there is provided an exhaust system supporting apparatus for a vehicle, wherein an exhaust system connected to an engine is supported at a lower portion of the vehicle body. In the lower part, the left and right support members on the vehicle body side which are fixed at intervals in the direction crossing the exhaust system, and the exhaust system, on the exhaust system side which are fixed at intervals in the direction crossing the exhaust system. A left and right support member, a left and right support member on the vehicle body side, and a single elastic body that connects the left and right support members on the exhaust system side, the elastic body being arranged in a direction crossing the exhaust system. An upper left / right connecting portion for connecting the left / right supporting members on the vehicle body side, a lower left / right connecting portion for connecting the left / right supporting members on the exhaust system side, an upper side portion connecting the upper left / right connecting portions, and the lower left / right portion. A lower side part connecting the connecting parts to each other and the upper part One of the right connecting portions, the left side portion connecting one of the lower left and right connecting portions, the other of the upper left and right connecting portions, the right side portion connecting the other of the lower left and right connecting portions, and the upper side portion An intermediate connecting part that connects the lower side part, and the intermediate connecting part is characterized in that the upper side part and the lower side part are formed of a plurality of columnar bodies that are connected at intervals. According to the present invention, in addition to achieving the same effect as the invention of claim 1, by changing the number, thickness, and inclination of the plurality of columnar bodies constituting the intermediate connecting portion, the vertical and horizontal directions of the vehicle body are changed. Can be easily changed.

According to a third aspect of the present invention, there is provided an exhaust system supporting apparatus for a vehicle, wherein an exhaust system connected to an engine is supported at a lower portion of the vehicle body. In the lower part, the left and right support members on the vehicle body side which are fixed at intervals in the direction crossing the exhaust system, and the exhaust system, on the exhaust system side which are fixed at intervals in the direction crossing the exhaust system. A left and right support member, a left and right support member on the vehicle body side, and a single elastic body that connects the left and right support members on the exhaust system side, the elastic body being arranged in a direction crossing the exhaust system. An upper left / right connecting portion for connecting the left and right support members on the vehicle body side, a lower left / right connecting portion for connecting the left and right supporting members on the exhaust system side, and one of the upper left / right connecting portions to the lower left / right connecting portion. The first and second joints to be joined, and the upper left The other connecting portion to the coupled to the lower right and left connecting portions, the third, are characterized by being more configuration as a fourth coupling portion, according to this aspect,
In addition to providing the same effects as the invention according to claim 1, in addition to reducing the capacity of the elastic body, the size and cost can be reduced, and furthermore, the elastic body is disposed between the vehicle body and the exhaust system. Easier to do.

[0011] Further, in order to achieve the above object, the invention according to claim 4 is the invention according to claim 3, wherein
A fourth coupling portion that couples one of the upper left and right coupling portions and one of the lower left and right coupling portions, near the first coupling portion, and connects the other of the upper left and right coupling portions and the other of the lower left and right coupling portions. A through hole is formed in each of the upper left and right and lower left and right connecting portions in the vicinity. According to such a feature, the same effect as that of the invention according to claim 3 can be obtained, and the durability can be improved. The dynamic spring constant of the elastic body can be reduced without lowering.

Further, in order to achieve the above object, the present invention according to claim 5 is the invention according to claim 3 or 4, wherein the distance between the centers of the upper left and right connecting portions (a).
Is larger than the center-to-center distance (b) of the lower left / right connecting part, and the distance (d) between the outer ends of the lower left / right connecting part.
Is set to be larger than the distance (c) between the inner ends of the upper left and right connecting portions. According to this feature, the same effect as that of the third or fourth aspect is obtained. In addition, the elastic body can further increase the displacement restraining force against the external force of the vehicle body in the left-right direction, and additionally can function as a stopper against the vertical displacement.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings.

The present embodiment is a case where the present invention is applied to a support device for an exhaust system of an automobile.
"Up / down", "left / right" and "front / rear" may be based on the forward direction of the vehicle, and the exhaust system extends along the front / rear direction of the vehicle body, and its front end is a connection end of the engine. The rear end is the open end of the tail pipe.

First, referring to FIGS. 1 to 3, a first embodiment of the present invention will be described.
An example will be described.

FIG. 1 is a perspective view of an exhaust system supporting device, and FIG.
FIG. 3 is a front view of the exhaust system support device as viewed in the direction of arrows 2 in FIG.
FIG. 3 is a sectional view taken along line 3-3 in FIG.

An exhaust system E for discharging exhaust gas discharged from the engine to the atmosphere is connected to an exhaust port of a traveling engine (not shown). The exhaust system E is extended below the vehicle body B in the automobile along the front-rear direction of the vehicle body B. Between the lower surface of the vehicle body B and the exhaust system E,
It is vertically spaced and suspended and supported below the vehicle body B by an exhaust system support device described later.

Since the exhaust system E itself has a conventionally known structure, a detailed description thereof will be omitted.

The support device for the exhaust system E is welded to a pair of left and right vehicle body-side support members 1 and 2 fixed to the lower part of the vehicle body B and to the upper rear end of the silencer S at the rear of the exhaust system E. A pair of left and right exhaust system-side support members 3, 4 and a single elastic body C connected to the two support members 1, 2, and 3, 4;
And these will be described in detail below.

The pair of left and right body-side support members 1 and 2
Metal rod-shaped members are bent to form the same shape, and their upper portions are formed on the side frame F at the lower portion of the vehicle body B.
In the fixed state, a pair of left and right vehicle body-side support members 1 and 2 are arranged symmetrically across the vertical center line of the exhaust system E. The pair of left and right exhaust-side support members 3 and 4 are also formed in the same shape by bending a metal rod-shaped member, and the lower portions thereof are disposed on the upper surface of the silencer S of the exhaust system E in the left-right direction. In a fixed state, the pair of exhaust-side support members 3 and 4 are arranged symmetrically across the longitudinal center line of the exhaust system E in this fixed state.

The elastic body C, which is a feature of the present invention, is made of a natural or synthetic rubber material, and its entire area is a flat plate having the same thickness. When connected between the support members 1, 2, 3 and 4 on the system side, as shown in FIG.
It is facing the front and rear direction of the vehicle. The front shape of the elastic body C, that is, the shape viewed from the front-rear direction of the vehicle, has a trapezoidal shape in which the upper side 5 is longer than the lower side 6, as clearly shown in FIG. At the end, the upper left and right connecting part 1
0, 11 are formed symmetrically left and right, and lower left and right connecting parts 12 and 13 are formed symmetrically at the left and right ends of the lower side part 6. Left and right mounting holes 10h and 11h on the vehicle body side are opened.
2h and 13h are open. The bent lower ends of the left and right support members 1 and 2 on the vehicle body side are inserted and connected to the left and right mounting holes 10h and 11h on the vehicle body side, and the exhaust holes are inserted into the left and right mounting holes 12h and 13h on the exhaust system side. The bent upper ends of the left and right support members 3 and 4 on the system side are inserted and connected.

As described above, the silencer S of the exhaust system E
Are elastically suspended and supported by a sub-frame F below the vehicle body B via left and right support members 1 and 2 on the vehicle body side, an elastic body C, and left and right support members 3 and 4 on the exhaust system side.

The structure of the elastic body C, which is a feature of the present invention, will be described in more detail.
The upper side portion 5 that integrally connects the upper left and right connecting portions 10 and 11 to which the left and right support members 1 and 2 on the vehicle body side are connected has a beam shape having a certain width in the vertical direction and a square cross section, The vertical center line of the upper side 5 is aligned with the vehicle body side left and right mounting holes 10h, 1
It passes through the center of 1h. The lower side 6, which integrally connects the lower left and right ends 12, 13 to which the left and right support members 3, 4 on the exhaust system E side are connected, also has a beam shape having a certain width in the vertical direction and a square cross section. And the vertical center line of the lower side 6 is
It passes through the center of the left and right mounting holes 12h and 13h on the exhaust system side. Further, left and right connecting portions 10 and 11 of the upper side portion 5,
The left and right sides 7, 8 for integrally connecting the left and right connecting parts 12, 13 of the lower side 6 are inclined in a direction narrowing downward from each other and have a constant width in the left and right direction. The vertical center line of the left side portion 7 passes through the center of the left mounting hole 10h on the vehicle body side and the center of the left mounting hole 12h on the exhaust system side. The vertical center line 8 passes through the center of the right mounting hole 11h on the vehicle body side and the center of the right mounting hole 13h on the exhaust system side. The elastic body C
The middle connecting portion 15 surrounded by the upper and lower sides 5 and 6 and the left and right sides 7 and 8 has a window 16 long in the left-right direction.
Are provided, and a plurality of pillars 17 are provided across the window hole 16 in a staggered manner in the vertical direction to connect the upper side part 5 and the lower side part 6 diagonally. .. Divide the window hole 16 into a plurality of portions, and have a truss-like shape as viewed from the front-rear direction of the intermediate connecting portion 15.

The cross-section of each of the columnar bodies 17 is formed in a square rod shape, and the number, thickness, cross-sectional area and inclination of the body B are changed to change the vertical and horizontal directions of the vehicle body B. The setting of the displacement constraint force in each direction is changed, whereby the setting of the “displacement constraint force” of the elastic body C itself can be easily changed.

Next, the operation of the first embodiment will be described.

Now, when an excessive external force acts on the exhaust system E in the vertical or horizontal direction, such as when the vehicle is traveling on a rough road or a sharp turn, the exhaust system E becomes larger than the vehicle body B. According to the exhaust system supporting device of this embodiment, the displacement can be reduced as much as possible for the following reasons. In other words, the single elastic body C employed in the support device exhibits a high static spring constant against vertical and horizontal external forces applied to the exhaust system E due to the structure and the arrangement setting with respect to the vehicle body B and the exhaust system E. And
Particularly, even if the excessive external force acts on the exhaust system E, the elastic body C is connected to the left and right support members 1 and 2 on the vehicle body side and the left and right support members 3 and 4 on the exhaust system side. The relative rotation due to the slip generated at the connection between the elastic member C and the support members 1, 2, 3 and 4 on the exhaust system side is extremely small, and the whole is deformed.

Therefore, when the exhaust system E receives the excessive external force, the elastic body C can be entirely deformed, not partially, and a high "displacement restraining function" can be exhibited. As a result, the elastic body C can be used to improve the “transmission blocking function” of the vibration, and the body B acting on the exhaust system E can be set even if its physical properties and shape are set so that the dynamic spring constant is reduced. The exhaust system E can exhibit a sufficient displacement restraining function against an excessive external force in the vertical and horizontal directions. Moreover, since both functions can be exhibited by a single elastic body C, the number of parts can be reduced and the structure can be simplified.

Next, a second embodiment of the present invention will be described with reference to FIGS.

In the second embodiment, the structure of the elastic body C is different from that of the first embodiment. FIG. 4 is a front view of an exhaust system support device, and FIG. FIG. 5 is a sectional view taken along line -5, in which the same reference numerals are given to the same elements as in the first embodiment.

The mounting arrangement of the exhaust system supporting device with respect to the vehicle body B and the exhaust system E is the same as that of the first embodiment, and the elastic body C made of rubber is flat and has the same thickness over its entire area. When it is plate-shaped and is connected between the support members 1, 2, 3 and 4 on the vehicle body side and the exhaust system side,
Its thickness direction is in the front-back direction of the vehicle body B and the exhaust system E. The front shape of the elastic body C, that is, the shape viewed from the front-rear direction of the vehicle, is a drum shape in which the upper side 5 is longer than the lower side 6, and the upper side 5 is concavely curved toward the center thereof. The part 6 is also curved concavely toward its center.

The structure of the elastic body C, which is a feature of the second embodiment, will be described in more detail.
As in the embodiment, the mounting is performed so as to be connected to the vehicle body side left and right support members 1 and 2, respectively, and is connected to the vehicle body side left and right connection members 10 and 11 having the mounting holes 10h and 11h opened and the exhaust system side left and right support members 3 and 4, respectively. Exhaust system side left and right connecting parts 12 and 13 having holes 12h and 13h are provided.
First and second connecting portions 21 and 22 for connecting one of the 11 to lower left and right connecting portions 12 and 13 and the other 11 of upper right and left connecting portions 10 and 11 to lower left and right connecting portions 12 and 13 respectively. And third and fourth coupling portions 23 and 24,
The first, second, and third and fourth coupling portions 21 and
Each of Nos. 2, 23, and 24 is formed in a columnar shape having a square cross section. The second connecting portion 22 and the third connecting portion 23 are integrally assembled at a central portion of the elastic body C.
5, 26 are opened.

Further, the center distance (a) between the upper left and right connecting parts 10 and 11 is made larger than the center distance (b) between the lower left and right connecting parts 12 and 13.
The distance (d) between the outer end portions of the upper left and right connecting portions 1
It is set to be larger than the distance (c) between the inner ends of 0 and 11. With such a setting, a high displacement constraint can be obtained with respect to an external force in the left-right direction of the vehicle body.

In the second embodiment, the exhaust system E includes:
When an external force acts in the vertical and horizontal directions of the vehicle body B,
The elastic body C causes a relative change in position between the upper left / right connecting portions 10 and 11 and the lower left / right connecting portions 12 and 13 to contribute to the “displacement restraining function”. There is almost no relative change in position between the upper and lower connecting portions 10 and 11 and between the lower left and right connecting portions 12 and 13. Since there is little contribution to the "displacement restraining function" between them, the relative position of the elastic body is relatively small. The connection between the connecting portions where a positional change is likely to occur is mainly connected between the upper left and right connecting portions 10 and 11 and the lower left and right connecting portions 12 and 13.
The upper side 5 and the lower side 6 are formed in a concave shape toward the center so as to greatly cut the meat of the elastic body C between the elastic bodies C, so that the elastic body C is effective with a small capacity. A simple "displacement constraint function" can be exhibited.

Therefore, in the second embodiment,
In addition to providing the same effect as that of the first embodiment, the capacity of the elastic body C can be reduced, which can contribute to cost reduction and can be formed more compact. There is also an advantage that the arrangement becomes easy.

Next, a third embodiment of the present invention will be described with reference to FIGS.

The third embodiment is slightly different from the second embodiment in the structure of the elastic body. FIG. 6 is a front view of an exhaust system supporting device, and FIG. FIG. 8 is a sectional view taken along line -7, and FIG. 8 is a view showing a state of displacement of the elastic body when an excessive vertical external force is applied. In the figure, the same elements as those in the second embodiment have the same reference numerals. Attached.

The mounting arrangement of the exhaust system supporting device to the vehicle body B and the exhaust system E is the same as that of the second embodiment, and the elastic body C is a flat plate having the same thickness throughout. When it is connected between the support members 1, 2, 3 and 4 on the vehicle body side and the exhaust system side, the thickness direction thereof is oriented in the front-back direction of the vehicle body B and the exhaust system E.
The front shape of the elastic body C, that is, the shape viewed from the front-rear direction of the vehicle is the same as that of the second embodiment.

In the third embodiment, the elastic member C
Elastic body C along the first and fourth coupling portions 21 and 24
The dynamic spring constant of the elastic body C can be reduced without lowering the durability of the elastic body C.
That is, the upper left / right connecting portions 10 and 11 and the lower left / right connecting portions 12 and 1 near the first and fourth connecting portions 21 and 24, respectively.
3 are provided with through holes 30, 31 and 32, 33, respectively. Upper left and right connecting parts 10, 11 and lower left and right connecting parts 12, 1
3 has a higher rigidity than the first and fourth connecting portions 21 and 24, so that the first and fourth connecting portions 21 and 24 can maintain the required rigidity while providing the connecting portions 21 and 24 with the same rigidity. The dynamic spring constant along the direction can be reduced.

In general, when the engine is placed sideways with respect to the traveling direction of the vehicle (in which the crankshaft is perpendicular to the traveling direction of the vehicle), most of the vibration of the exhaust system is generated. Is divided into a vertical vibration component of the vehicle body and a longitudinal vibration component of the vehicle body. Since the horizontal vibration component of the vehicle body is negligibly small, the elastic body C
Of the first and fourth connecting portions 21 and 24 (thickness)
It is effective to reduce the dynamic spring constant in the vertical direction of the vehicle body by reducing the thickness of the body, in order to reduce the transmission of vibration to the vehicle body. However, when the cross-sectional area of these coupling portions 21 and 24 is reduced, the elastic body Although a problem occurs in that the durability of C itself is reduced, the third embodiment does not reduce the cross-sectional area of the first and fourth coupling portions 21 and 24 and does not reduce the vertical dynamic spring of the vehicle body. It is possible to reduce the constant.

Further, in the third embodiment, the distance (a) between the centers of the upper left and right connecting parts 10 and 11 is changed to the lower left and right connecting part 1.
The distance (d) between the outer ends of the lower left and right connecting parts 12 and 13 is larger than the center distance (b) of
Since the distance (c) between the inner ends of the upper left and right connecting parts 10 and 11 is set to be larger, an excessive vertical external force acts while increasing the displacement restraining force against the lateral external force of the vehicle body B. As shown in FIG. 8, the connection portions 10 and 12 and the connection portions 11 and 13 having high rigidity come into contact with each other, and can function as a stopper against vertical displacement.

The third embodiment has the same effects as those of the first and second embodiments, and is effective for further reducing the dynamic spring constant of the elastic body. Since it can be formed more compact, there is also an advantage that the arrangement between the vehicle body B and the exhaust system E is facilitated.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention. For example, in the above-described embodiment, the case where the exhaust system supporting device is applied to an automobile has been described. However, it is needless to say that this can be applied to other vehicles, and the elastic body is made of a rubber material. This may be constituted by another elastic member such as an elastic synthetic resin material. Further, in the above-described embodiment, the case where the vehicle body-side support member and the exhaust system-side support member are each a pair of left and right has been described. May be a plurality of pairs on each side.

[0043]

As described above, according to the first aspect of the present invention, a high static spring constant is exerted against the vertical and horizontal external forces applied to the exhaust system, and particularly, an excessive external force is applied to the exhaust system. Even if it works, the relative rotation due to the slip generated at the connecting portion between the support member on the vehicle body side and the exhaust system side and the elastic body is extremely small, and even when the exhaust system receives an excessive external force, the elastic body is partially Without deformation, and a high "displacement constraint function" can be exhibited. As a result, in order to improve the “transmission blocking function” of the vibration, the elastic body acts on the exhaust system even if its physical properties, shape, etc. are set so as to reduce the dynamic spring constant. The exhaust system can exhibit a sufficient “displacement restraining function” with respect to an excessive external force in the direction or the left-right direction. Moreover, since both functions can be exhibited by a single elastic body, the number of parts can be reduced and the structure is simplified,
Significant cost reduction can be achieved.

According to the second aspect of the present invention, in addition to the same effects as those of the first aspect of the present invention, in addition to the number, the sectional area, and the number of the plurality of columnar bodies constituting the intermediate connecting portion, By changing the inclination, the setting of the displacement restraining force in the vertical and horizontal directions of the vehicle body can be easily changed.

According to the third aspect of the present invention, in addition to achieving the same effects as the first aspect of the present invention, the capacity of the elastic body is reduced, so that the size of the elastic body can be reduced and the cost can be further increased. Downward movement can be achieved, and furthermore, it becomes easier to arrange between the vehicle body and the exhaust system.

Further, according to the fourth aspect of the present invention,
The same effect as that of the third aspect can be obtained, and the dynamic spring constant of the elastic body can be reduced without lowering the durability.

According to the fifth aspect of the present invention, the same effect as that of the third or fourth aspect is obtained, and the elastic body further reduces the displacement restraining force against the external force of the vehicle body in the left-right direction. In addition, it can function as a stopper against vertical displacement.

[Brief description of the drawings]

FIG. 1 is a perspective view of an exhaust system support device (first embodiment).

FIG. 2 is a front view of the exhaust system support device as viewed in the direction of arrows 2 in FIG. 1;

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a front view of an exhaust system supporting device (second embodiment).

FIG. 5 is a sectional view taken along lines 5-5 in FIG. 4;

FIG. 6 is a front view of an exhaust system supporting device (third embodiment).

FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6;

FIG. 8 is a view showing a state of an elastic body when an external force acts in a vertical direction (third embodiment);

[Explanation of symbols]

 1, 2,..., Vehicle body side support member 3, 4,..., Exhaust system side support member 5,.・ ・ ・ ・ ・ ・ ・ ・ ・ Bottom side 7 ・ ・ ・ Left side 8 ・ ・ ・ Right side 10,11 ・ ・ ・ ・ ・ ・ ・ ・ ・ Top Left and right connecting parts 12, 13 ... Lower right and left connecting parts 15 ... Middle connecting part 17 ... Column 21 ... ·················· 1st connecting section 22 ·············································································································································· ... Fourth connecting part 30, 31, 32, 33, through hole B ... body C ... elastic body E ... ..... Exhaust system

Continued on the front page F term (reference) 3D038 BA02 BB01 BC07 BC23 3G004 AA01 BA04 DA13 EA03 FA08 GA06 3J048 AA01 BA21 DA07 EA01

Claims (5)

[Claims] 1. An exhaust system (E) connected to an engine,
An exhaust system support device for a vehicle, which is supported at a lower portion of a vehicle body (B), wherein the vehicle body side fixed to the lower portion of the vehicle body (B) at intervals in a direction crossing the exhaust system (E). Left and right support members (1,
2) and left and right support members (3, 3) on the exhaust system side which are fixed to the exhaust system (E) at intervals in a direction crossing the exhaust system (E).
4), a single elastic body (C) connecting the left and right support members (1, 2) on the vehicle body side and the left and right support members (3, 4) on the exhaust system side, (C) upper right and left connecting portions (10, 11) which are arranged in a direction crossing the exhaust system (E) and connect the support members (1, 2) on the vehicle body side to upper right and left portions thereof.
And a lower left and right connecting portion (12, 13) for connecting the supporting member (3, 4) on the exhaust system side to the lower left and right sides thereof, respectively. 2. An exhaust system (E) connected to an engine,
An exhaust system support device for a vehicle, which is supported at a lower portion of a vehicle body (B), wherein the vehicle body side fixed to the lower portion of the vehicle body (B) at intervals in a direction crossing the exhaust system (E). Left and right support members (1,
2) and left and right support members (3, 3) on the exhaust system side which are fixed to the exhaust system (E) at intervals in a direction crossing the exhaust system (E).
4), a single elastic body (C) connecting the left and right support members (1, 2) on the vehicle body side and the left and right support members (3, 4) on the exhaust system side, (C) is an upper left / right connecting portion (10, 11) arranged in a direction crossing the exhaust system (E) and connecting the left and right support members (1, 2) on the vehicle body side; A lower left / right connecting portion (12, 13) for connecting the supporting members (3, 4) to each other; an upper side portion (5) for connecting the upper left / right connecting portions (10, 11) to each other; , 13), one of the upper left and right connecting parts (10, 11), and the left side (7) connecting one of the lower left and right connecting parts (12, 13). A right side connecting the other of the upper left and right connecting parts (10, 11) and the other of the lower left and right connecting parts (12, 13); A (8), the upper portion (5) and the lower part (6) and the intermediate connection portion for coupling the (15), wherein the intermediate connecting portion (15), said upper portion (5)
A support device for an exhaust system in a vehicle, comprising a plurality of columnar bodies (17) connecting the lower side part (6) and the lower side part (6) at intervals. 3. An exhaust system (E) connected to an engine,
An exhaust system support device for a vehicle, which is supported at a lower portion of a vehicle body (B), wherein the vehicle body side fixed to the lower portion of the vehicle body (B) at intervals in a direction crossing the exhaust system (E). Left and right support members (1,
2) and left and right support members (3, 3) on the exhaust system side which are fixed to the exhaust system (E) at intervals in a direction crossing the exhaust system (E).
4), a single elastic body (C) connecting the left and right support members (1, 2) on the vehicle body side and the left and right support members (3, 4) on the exhaust system side, (C) is an upper left / right connecting portion (10, 11) arranged in a direction crossing the exhaust system (E) and connecting the left and right support members (1, 2) on the vehicle body side; One of the lower left and right connecting parts (12, 13) for connecting the support members (3, 4) and one of the upper left and right connecting parts (10, 11) is connected to the lower left and right connecting parts (12, 13). A third and a fourth coupling part that couples the other of the first and second coupling parts (21 and 22) and the upper left and right coupling parts (10 and 11) to the lower left and right coupling parts (12 and 13). And a connecting portion (23, 24) for the exhaust system in the vehicle. 4. One of the upper left and right connecting parts (10, 11) and one of the lower left and right connecting parts (12, 13) are connected.
The vicinity of the first coupling part (21) and the other of the upper left and right coupling parts (10, 11) and the lower left and right coupling parts (12, 1)
Through holes (30, 31 and 32, 33) are formed in the upper left / right and lower left / right connecting portions (10, 11 and 12, 13) in the vicinity of the fourth connecting portion for connecting the other of 3). The exhaust system support device for a vehicle according to claim 3, wherein: 5. The center distance (a) of the upper left / right connecting parts (10, 11) is made larger than the center distance (b) of the lower left / right connecting parts (12, 13), and the lower left / right connecting parts are formed. The distance (d) between the outer ends of the (12, 13) is set larger than the distance (c) between the inner ends of the upper left and right connecting parts (10, 11). An exhaust system support device for a vehicle according to claim 3 or 4.