JP2013189174A - Supporting structure for exhaust pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporting structure for an exhaust pipe, capable of avoiding occurrence of an abnormal noise caused by contact of ice adhering to a vehicle body with the exhaust pipe, and also capable of suppressing occurrence of corrosion of a supporting portion for the exhaust pipe.SOLUTION: A supporting structure supports a hanger stay 36 on a side of an exhaust pipe provided to extend from the side of the exhaust pipe 3 arranged below a vehicle body 1 toward a side of the vehicle body 1, with respect a hanger stay 44 on the side of the vehicle body provided on a floor panel 4, through a mount rubber 5. In the supporting structure, the hanger stay 36 on the side of the exhaust pipe is fixed on a main muffler 34 and is inserted into a lower through hole 54 formed in a mount rubber body 51, and an enlarged tip end 36A of the hanger stay 36 on the side of the exhaust pipe is provided with a cover portion 52 covering to surround the enlarged tip end 36A with a clearance S.

Description

  The present invention relates to an exhaust pipe support structure, and more particularly to an exhaust pipe support structure disposed below a vehicle floor panel.

  Generally, in a vehicle equipped with an engine, an exhaust pipe is disposed in a space below a floor panel. As a support structure for the exhaust pipe, a floor side bracket (vehicle body side hanger stay) provided on the floor panel and a support bracket (exhaust pipe side hanger stay) provided on the exhaust pipe side are interposed via a rubber muffler mount. There is known a structure for connecting them (see, for example, Patent Document 1). In general, the floor panel includes a front floor panel, a vertical wall (vertical panel), and a rear floor panel. In such a floor panel structure, the exhaust pipe is led out from the engine room and is arranged so as to extend to the rear end portion in the vehicle front-rear direction along the lower surfaces of the front floor panel and the rear floor panel. The front end of the muffler disposed at the rear of the vehicle is provided with a support bracket. The support bracket is supported via a muffler mount with respect to a floor side bracket provided on the vertical wall portion of the floor panel.

JP 2005-90430 A

  However, in the exhaust pipe support structure described above, when traveling on a road where snow has melted in winter (so-called sherbet road), the sherbet-like snow collides with the end plate of the muffler and bounces back, so that the vertical wall portion And the muffler mount. Then, the ice that has landed on the bracket mounting portion of the vertical wall portion generates a frozen ice mass after day and night. When the engine is started in this state, there is a problem that the support bracket on the exhaust pipe side and the ice block collide to generate a large noise. In addition, a snow melting agent (calcium chloride or the like) spreads on the road surface due to such icing, which causes a problem that the support bracket or the like is easily corroded.

  The present invention has been made in view of the above-described problems, and can avoid the generation of abnormal noise due to contact between the ice adhering to the vehicle body and the exhaust pipe, and can suppress the occurrence of corrosion of the support portion of the exhaust pipe. An object is to provide a support structure for an exhaust pipe.

  In order to solve the above-described problems and achieve the object, according to an aspect of the present invention, an exhaust pipe-side hanger stay provided to extend from an exhaust pipe disposed below a vehicle body toward the vehicle body side is provided on the vehicle body. In the support structure that supports the vehicle body side hanger stay via the elastic member, the exhaust pipe side hanger stay is inserted into a through hole formed in the elastic member, and is connected to the tip of the exhaust pipe side hanger stay. An elastic cover portion is disposed so as to surround the tip portion with a gap therebetween.

  In the above aspect, the base portion of the vehicle body side hanger stay is fixed to a vertical wall portion of the floor panel extending in the vehicle vertical direction, and the elastic member is disposed at a position facing the vertical wall portion.

  As the above aspect, the elastic cover portion is formed integrally with the elastic member.

  As an aspect described above, the elastic cover portion is fitted to a distal end portion of the exhaust pipe side hanger stay that is inserted into the elastic member and protrudes from the elastic member.

  In the above aspect, the exhaust pipe side hanger stay is provided at the front end portion of the muffler, the muffler is disposed behind the vertical wall portion of the step portion of the floor panel of the vehicle body in the vehicle front-rear direction, and the elastic member is the vertical wall It arrange | positions so that it may oppose the vicinity of the rear surface of the vehicle front-back direction of a part.

  According to the present invention, an exhaust pipe support structure capable of avoiding the generation of abnormal noise due to contact between ice adhering to the vehicle body and the exhaust pipe side hanger stay and suppressing the occurrence of corrosion of the support part of the exhaust pipe is realized. be able to.

FIG. 1 is an explanatory plan view of a vehicle to which an exhaust pipe support structure according to a first embodiment of the present invention is applied. FIG. 2 is an explanatory side view of the vehicle to which the exhaust pipe support structure according to the first embodiment of the present invention is applied. FIG. 3 is a main part explanatory view showing a state in which the vehicle portion to which the exhaust pipe support structure according to the first embodiment of the present invention is applied is viewed from the side. FIG. 4 is a front view of a mount rubber used in the exhaust pipe support structure according to the first embodiment of the present invention. FIG. 5 is a side view of the mount rubber used in the exhaust pipe support structure according to the first embodiment of the present invention. 6 is a cross-sectional view showing a state cut along line VI-VI in FIG. FIG. 7 is a main part explanatory view showing a state where ice blocks are generated in the exhaust pipe support structure according to the first embodiment of the present invention. FIG. 8A is a front view of a mount rubber main body used in the exhaust pipe support structure according to the second embodiment of the present invention. FIG. 8B is a side view of the mount rubber main body used in the exhaust pipe support structure according to the second embodiment of the present invention. FIG. 8C is a perspective view of a cover used in the exhaust pipe support structure according to the second embodiment of the present invention. FIG. 8D is a cross-sectional view of a state in which the mount rubber main body and the cover used in the exhaust pipe support structure according to the second embodiment of the present invention are assembled. FIG. 9A is a perspective view of a cover according to Modification 1 of the mount rubber according to the second embodiment of the present invention. FIG. 9B is a cross-sectional view of the cover according to Modification 1 of the mount rubber according to the second embodiment of the present invention. FIG. 9C is a cross-sectional view showing an exhaust pipe holding structure in which the mount rubber main body and the cover are assembled, showing a modification 1 of the mount rubber in the second embodiment of the present invention. FIG. 10A is a perspective view of a cover according to Modification 2 of the mount rubber according to the second embodiment of the present invention. FIG. 10B is a cross-sectional view of the cover according to Modification 2 of the mount rubber according to the second embodiment of the present invention. FIG. 10C is a cross-sectional view showing an exhaust pipe holding structure in which the mount rubber main body and the cover are assembled, showing a modified example 2 of the mount rubber in the second embodiment of the present invention.

  Below, the detail of the support structure of the exhaust pipe which concerns on each embodiment of this invention is demonstrated based on drawing. However, it should be noted that the drawings are schematic, and the dimensions, ratios and shapes of the members are different from actual ones. In addition, the drawings include portions having different dimensional relationships, ratios, and shapes. In the present embodiment, for convenience of explanation, the front-rear direction, the left-right direction, and the up-down direction of the vehicle are indicated by arrows in the drawing.

[First Embodiment]
(Schematic configuration of the vehicle)
1 to 7 show an exhaust pipe support structure according to a first embodiment of the present invention. As shown in FIGS. 1 and 2, in the present embodiment, an exhaust manifold 2 is disposed in the front portion 1 </ b> A of the vehicle body 1. The exhaust manifold 2 is provided in an engine (not shown) mounted on the front portion 1A (in the engine room) of the vehicle body 1. An exhaust pipe 3 is connected to the exhaust manifold 2. As shown in FIG. 2, the exhaust pipe 3 is disposed below a floor panel 4 provided at the lower part of the vehicle body 1.

  As shown in FIG. 2, the floor panel 4 includes a front floor panel 41, a stepped portion 42, and a rear floor panel 43. As shown in FIG. 3, the step portion 42 includes a first vertical wall portion (vertical panel) 42A, an intermediate horizontal panel 42B, and a second vertical wall portion (vertical panel) 42C. The first vertical wall portion 42A is formed to rise from the rear edge of the front floor panel 41. The intermediate horizontal panel 42B extends from the upper edge of the first vertical wall portion 42A toward the rear of the vehicle. The second vertical wall portion 42C is formed so as to rise upward in the vehicle vertical direction from the rear end edge of the intermediate horizontal panel 42B.

  The rear floor panel 43 extends from the upper end edge of the second vertical wall portion 42C toward the rear in the vehicle front-rear direction so as to be substantially horizontal. The rear floor panel 43 is arranged at a higher position than the front floor panel 41 through the step portion 42. The main muffler 34 to be described later is disposed using a space below the rear floor panel 43, that is, a space on the rear side in the vehicle front-rear direction of the stepped portion 42. In the present embodiment, the mount rubber 5 as an elastic member is arranged in a space sandwiched between the rear surface of the second vertical wall portion 42C and the lower surface of the rear floor panel 43 perpendicular to the second vertical wall portion 42C.

(Exhaust pipe configuration)
As shown in FIG. 2, the exhaust pipe 3 is led downward from the exhaust manifold 2. The exhaust pipe 3 led downward from the exhaust manifold 2 is disposed so as to extend below the front floor panel 41, the step portion 42, and the rear floor panel 43 to the vehicle end along the vehicle front-rear direction. The exhaust pipe 3 includes a front exhaust pipe 31, a sub muffler 32, a center exhaust pipe 33, a main muffler 34, and a rear exhaust pipe 35 sequentially from the front side to the rear side in the vehicle front-rear direction. A catalyst converter (not shown) is provided on the front end side of the front exhaust pipe 31. As shown in FIGS. 3 and 7, the rear end portion of the center exhaust pipe 33 is disposed below the step portion 42 in the floor panel 4. The rear end portion of the center exhaust pipe 33 is connected to the front end surface 34B of the main muffler 34 in a state where the rear end portion of the center exhaust pipe 33 is inclined rearward and upward in the vehicle front-rear direction. In this manner, the rear end portion of the center exhaust pipe 33 is inclined obliquely upward in the vehicle front-rear direction, so that the arrangement position of the main muffler 34 can be increased (the clearance with the road surface can be gained).

(Exhaust pipe support structure)
The exhaust pipe 3 having such a configuration is supported on the vehicle body side at a plurality of locations. As shown in FIG. 3, in the support structure according to the present embodiment, the front end portion 34 </ b> A of the main muffler 34 is attached to the second vertical wall portion 42 </ b> C of the floor panel 4 via the mount rubber 5. An exhaust pipe side hanger stay 36 is provided on the upper portion of the front end portion 34 </ b> A of the main muffler 34. A vehicle body side hanger stay 44 is provided on the rear surface of the second vertical wall portion 42C.

  Hereinafter, the exhaust pipe side hanger stay 36 will be described. As shown in FIGS. 3 and 7, the exhaust pipe side hanger stay 36 is a rod-shaped metal member fixed to the upper part of the front end portion 34 </ b> A of the main muffler 34. Further, the exhaust pipe side hanger stay 36 is fixed at the front end 34A of the main muffler 34 so as to protrude forward in the vehicle front-rear direction. In the present embodiment, a rod-shaped support member 37 is welded to the upper portion of the front end portion 34 </ b> A of the main muffler 34 so that the exhaust pipe-side hanger stay 36 is firmly held against the main muffler 34. The exhaust pipe side hanger stay 36 may be a rod-like member that substantially protrudes above the front end portion 34A of the main muffler 34, and is not limited to such a structure.

  As shown in FIG. 7, the end portion of the exhaust pipe side hanger stay 36 is formed with a tip end enlarging portion 36 </ b> A as a tip portion having a slightly larger diameter. Further, an intermediate enormous portion 36B is formed at a position on the rear side in the vehicle front-rear direction by a predetermined dimension T from the end enormous portion 36A of the exhaust pipe side hanger stay 36. The diameter dimension of the intermediate enormous part 36B is set in the same manner as the diameter dimension of the tip enormous part 36A.

  Next, the vehicle body side hanger stay 44 will be described. As shown in FIGS. 3 and 7, the vehicle body side hanger stay 44 has a shape in which a rod-shaped metal member is bent in a substantially L shape. The vehicle body-side hanger stay 44 includes a support portion 44A fixed to the rear surface of the second vertical wall portion 42C, and a hanger portion 44B that protrudes rearward in the vehicle front-rear direction from the rear surface of the second vertical wall portion 42C. The support portion 44A is fixed to the second vertical wall portion 42C by a fixing member 44C. The front end portion of the hanger portion 44B is bent as a retaining portion 44D that is inclined rearward and obliquely upward. In the present embodiment, when the exhaust pipe side hanger stay 36 is supported via the mount rubber 5 with respect to the hanger part 44B of the vehicle body side hanger stay 44, the hanger part 44B and the exhaust pipe side hanger stay 36 are substantially omitted. It is designed to be parallel.

  Next, the mount rubber 5 will be described. As shown in FIG. 4, the mount rubber 5 includes a plate-like mount rubber main body 51 having an elliptical front surface and a cover portion 52 as an elastic cover portion. The mount rubber main body 51 and the cover portion 52 are integrally formed of a rubber material. As shown in FIG. 5, the mount rubber 5 has the same thickness dimension T as the distance between the tip enormous portion 36 </ b> A and the intermediate enormous portion 36 </ b> B in the exhaust pipe side hanger stay 36. As shown in FIGS. 4 and 6, the mount rubber body 51 has an upper through hole 53, a lower through hole 54, an upper cutout 55, and a lower cutout 56 that penetrate in the thickness direction at the top. It is formed as follows.

  The upper through hole 53 is formed in the upper part of the mount rubber main body 51. As shown in FIG. 7, the hanger portion 44 </ b> B of the vehicle body side hanger stay 44 is inserted into the upper through hole 53. At this time, the mount rubber 5 is disposed so that the cover portion 52 faces the rear surface of the second vertical wall portion 42C in the vehicle front-rear direction. The lower through hole 54 is formed in the lower part of the mount rubber main body 51. As shown in FIG. 7, the exhaust pipe-side hanger stay 36 is inserted into the lower through hole 54 in the direction from the rear to the front in the vehicle front-rear direction. As described above, the thickness dimension of the mount rubber main body 51 is the same dimension T as the dimension between the large tip portion 36A and the middle huge portion 36B in the exhaust pipe side hanger stay 36. For this reason, when the distal end enlarging portion 36A is inserted into the lower through hole 54 and the distal end enlarging portion 36A comes out of the lower through hole 54, the mount rubber main body 51 has the end enlarging portion 36A and the intermediate enlarging portion 36B. It is in a state of being sandwiched between. For this reason, the tip enormous portion 36A and the intermediate enormous portion 36B are formed on the exhaust pipe side hanger stay 36, thereby preventing mutual displacement between the mount rubber main body 51 and the exhaust pipe side hanger stay 36.

  As shown in FIG. 6, the cover portion 52 has a dome-like structure surrounding the end portion of the lower through hole 54. As shown in FIG. 7, in the present embodiment, when the exhaust pipe side hanger stay 36 is inserted and attached to the lower through hole 54, the cover portion 52 is arranged with the gap S between the tip enormous portion 36 </ b> A. Yes. The thickness of the wall portion of the cover portion 52 is durable so as not to be deformed up to a predetermined stress with respect to the stress extending from the outside, and has an elastic characteristic that starts to deform when the predetermined stress is exceeded. Yes.

  The upper notch 55 and the lower notch 56 in the mount rubber main body 51 are set according to desired elastic characteristics of the mount rubber 5 and are not limited to the shapes as shown in FIG. .

[Operation and effects in support structure]
In the present embodiment, the cover portion 52 is disposed so as to surround the tip enormous portion 36A (tip portion) of the exhaust pipe side hanger stay 36 with a gap S therebetween. For this reason, in the present embodiment, when the exhaust pipe side hanger stay 36 and the mount rubber 5 are swung, it is prevented that the enormous tip end portion 36A of the exhaust pipe side hanger stay 36 directly abuts against a member on the floor panel 4 side. Has the effect of

  By the way, in winter, when the vehicle body 1 travels on a so-called sherbet road, sherbet-like snow (indicated by arrows A and B in FIG. 7) scattered from the road surface is formed on the front end surface 34B of the main muffler 34 and the like. It collides and rebounds, adheres to the vicinity of the second vertical wall portion 42C, and the ice mass 10 is generated. In this state, when the vehicle is run after being left for a whole day and night, an operation in the direction in which the tip enormous portion 36 </ b> A (tip portion) of the exhaust pipe-side hanger stay 36 hits the ice block 10 is performed by vibration on the exhaust pipe 3 side. However, as shown in FIG. 7, in the present embodiment, the cover portion 52 surrounds the tip enormous portion 36A with a gap S therebetween, and the mount rubber 5 vibrates with the vibration on the exhaust pipe 3 side. However, there exists an effect | action which prevents the tip enormous part 36A from colliding with the ice lump 10. In particular, in the present embodiment, the cover portion 52 is set so as not to be deformed when a stress is applied to the gap between the second vertical wall portion 42C and the cover portion 52 to the extent that snow or the like has formed. For this reason, in this Embodiment, there exists an effect | action which prevents the tip enormous part 36A from colliding with the ice lump 10. That is, the cover part 52 has a buffering action that suppresses the tip enormous part 36 </ b> A from colliding with the ice block 10. In addition, in order to prevent the tip enormous portion 36A from directly hitting the ice block 10, it is possible to prevent the sound (abnormal noise) that the tip end portion 36A scrapes the ice block 10 from occurring. As described above, in the present embodiment, since the problem associated with the generation of the ice block 10 on the rear side in the vehicle front-rear direction of the second vertical wall portion 42C can be solved, the main muffler 34 is arranged on the rear floor panel 43 on the rear side of the step portion 42. It is possible to maintain the arrangement in an appropriate arrangement space below the.

  In the present embodiment, since the cover portion 52 is formed integrally with the mount rubber main body 51 from the same rubber material, it has elasticity. Therefore, in the present embodiment, the vibration on the exhaust pipe 3 side is transmitted to the cover portion 52 to suppress the ice block 10 from icing, and the scattered sherbet-like snow is rebounded by the cover portion 52. Has an effect. For this reason, the cover part 52 can prevent the ice block 10 from icing on the surface. The design conditions such as the thickness, size, and material type of the cover portion 52 are preferably designed in consideration of vibration characteristics on the exhaust pipe 3 side.

  In the present embodiment, since the cover portion 52 is integrally formed with the mount rubber main body 51, it is possible to prevent water from entering the lower through hole 54 from the ice block side. For this reason, with the support structure of the present embodiment, it is possible to suppress the occurrence of corrosion in the vicinity of the exhaust pipe-side hanger stay 36, particularly the tip enormous portion 36 </ b> A. In the present embodiment, since the cover portion 52 and the mount rubber main body 51 are integrally formed, there is no increase in the number of parts, and the assemblability of the mount rubber 5 is not lowered.

[Second Embodiment]
8A to 8D show the mount rubber 6 used in the exhaust pipe support structure according to the second embodiment of the present invention. In the description of the present embodiment, the vehicle body side member and the exhaust pipe side member will be described using the same reference numerals as those in the first embodiment.

  The mount rubber 6 is composed of a plate-shaped mount rubber main body 61 having an elliptical front surface and a cover 62. The mount rubber body 61 and the cover 62 are separately molded from rubber. As shown in FIGS. 8A and 8B, the mount rubber main body 61 has the same shape as the mount rubber main body 51 of the first embodiment. That is, the mount rubber body 61 is formed with an upper through hole 63, a lower through hole 64, an upper notch 65, and a lower notch 66 penetrating in the thickness direction in the upper part.

  The upper through hole 63 is formed in the upper part of the mount rubber main body 61, and the hanger portion 44B of the vehicle body side hanger stay 44 is inserted therein. The lower through-hole 64 is formed in the lower part of the mount rubber main body 61, and the exhaust pipe side hanger stay 36 is inserted therein. Similarly to the first embodiment, the exhaust pipe side hanger stay 36 is mounted such that the tip enormous portion 36A is inserted from one opening end of the lower through hole 64 and goes out from the other opening end. The

  The cover 62 is adapted to be fitted and attached to the leading end enlarged portion 36 </ b> A protruding from the other opening end of the lower through-hole 54. As shown in FIG. 8D, the cover 62 is molded so that the cover wall portion 62A of the cover 62 is disposed so as to cover the tip enormous portion 36A and the gap S when the cover 62 is attached to the tip enormous portion 36A. Yes. Further, the opening 62B of the cover 62 is set to be smaller than the diameter dimension of the tip enlarged portion 36A. For this reason, the cover 62 is difficult to come off when it is attached to the tip enormous portion 36A. The thickness of the wall portion of the cover 62 is durable so as not to be deformed up to a predetermined stress with respect to the stress extending from the outside, and has an elastic characteristic that starts to deform when the predetermined stress is exceeded. . Also in the present embodiment, similar to the first embodiment, it is possible to suppress the generation of abnormal noise caused by ice blocks.

[Modification 1 of the second embodiment]
9A to 9C show a mount rubber 6A as Modification 1 of the mount rubber 6 used in the exhaust pipe support structure according to the second embodiment. The mount rubber main body 61 used in the first modification is the same as the mount rubber main body 61 used in the second embodiment. For this reason, description of the structure of the mount rubber main body 61 is abbreviate | omitted.

  In Modification 1, instead of the cover 62 used in the second embodiment, a cover 67 as shown in FIGS. 9A to 9C is used. As shown in FIGS. 9A and 9B, the cover 67 is roughly configured to include a cover portion 67A, a first opening portion 67B, a connecting portion 67C, and a second opening portion 67D. The portion where the first opening 67B is formed and the portion where the second opening 67D is formed are set to be parallel to each other. As shown in FIG. 9C, the connecting portion 67C is inserted through the lower notch 66 of the mount rubber body 61, and the first opening 67B and the second opening 67D provided with the connecting portion 67C interposed therebetween, It is used in alignment with the openings on both sides of the through hole 64. In this state, when the distal end enlarging portion 36A of the exhaust pipe side hanger stay 36 is sequentially inserted into the second opening 67D, the lower through hole 64, and the first opening 67B, the peripheral wall portion of the cover portion 67A becomes enormous at the distal end. The portion 36A and the gap S are arranged apart from each other.

  According to the first modification, the cover 67 is fitted to the exhaust pipe side hanger stay 36 at two locations of the first opening 67B and the second opening 68D. It is possible to prevent the main body 61 from falling off. Moreover, in this modification 1, since the cover 67 is comprised with the elastic member, it is easy to insert in the lower notch 66 by deform | transforming the connection part 67, and assembly | attachment workability | operativity is high.

[Modification 2 of the second embodiment]
10A to 10C show a mount rubber 6B as a modified example 2 of the mount rubber 6 used in the exhaust pipe support structure according to the second embodiment. The mount rubber body 61 used in the second modification is the same as the mount rubber body 61 used in the second embodiment. For this reason, description of the structure of the mount rubber main body 61 is abbreviate | omitted.

  In the second modification, a cover 68 as shown in FIGS. 10A to 10C is used instead of the cover 62 used in the second embodiment. As shown in FIGS. 10A and 10B, the cover 68 is roughly configured to include a cover portion 68A, a first opening portion 68B, a connecting portion 68C, and a second opening portion 68D. In the second modification, the portion where the first opening 68B is formed and the portion where the second opening 68D is formed are formed so as to be arranged in substantially the same plane. As shown in FIG. 10C, the connecting portion 63C is disposed so as to follow one surface of the mount rubber body 61 (the surface facing the second vertical wall portion 42C of the floor panel 4). The hanger 44 </ b> B of the vehicle body side hanger stay 44 is inserted into the second opening 68 </ b> D and the upper through hole 63. The exhaust pipe side hanger stay 36 is inserted into the lower through hole 64 and the first opening 68B. At this time, the peripheral wall portion of the cover portion 68A is arranged with the clearance S between the tip enormous portion 36A.

  In the second modification, the first opening 68B is attached to the exhaust pipe side hanger stay 36, and the second opening 68D is engaged with the hanger 44B. Due to such a structure, the cover 68 can be prevented from falling off the exhaust pipe side hanger stay 36 and the mount rubber main body 61. Further, since the cover 68 as in the modified example 2 only needs to be attached to one surface of the mount rubber main body 61, the assembling workability is high.

(Other embodiments)
Although the embodiment has been described above, it should not be understood that the description and the drawings constituting a part of the disclosure of the embodiment limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  For example, in the first and second embodiments, the mount rubber main bodies 51 and 61 and the cover portion 52 and the covers 62, 67 and 68 are made of the same material. Good.

  In the first and second embodiments, the vehicle body side hanger stay 44 protrudes rearward in the vehicle front-rear direction, but may extend in the vehicle width direction. In short, the upper portions of the mount rubbers 5, 6, 6A, 6B may be held by applying various holding structures.

  In the first and second embodiments, the exhaust pipe support structure of the present invention is applied when the exhaust pipe side hanger stay 36 at the front of the main muffler 34 is suspended to the vehicle body side. It is also possible to apply the present invention to the support portions at various places.

DESCRIPTION OF SYMBOLS 1 Car body 3 Exhaust pipe 4 Floor panel 5, 6, 6A, 6B Mount rubber 34 Main muffler 36 Exhaust pipe side hanger stay 36A End enormous part 36B Intermediate enormous part 41 Front floor panel 42 Step part 42C 2nd vertical wall part 43 Rear floor panel 44 Body hanger stay 44A Support portion 44B Hanger portion 51, 61 Mount rubber main body 52, 67A, 68A Cover portion 53, 63 Upper through hole 54, 64 Lower through hole 62, 67, 68 Cover S Gap

Claims (5)

A support structure for supporting an exhaust pipe side hanger stay provided so as to extend from an exhaust pipe disposed below the vehicle body toward the vehicle body side with respect to the vehicle body side hanger stay provided on the vehicle body via an elastic member. In
The exhaust pipe-side hanger stay is inserted into a through-hole formed in the elastic member, and an elastic cover portion is disposed so as to surround the tip portion with a gap from the tip portion of the exhaust pipe-side hanger stay. A structure for supporting an exhaust pipe, wherein   The base portion of the vehicle body side hanger stay is fixed to a vertical wall portion extending in a vehicle vertical direction on a floor panel, and the elastic member is arranged at a position facing the vertical wall portion. The exhaust pipe support structure described.   The exhaust pipe support structure according to claim 1, wherein the elastic cover portion is formed integrally with the elastic member.   The said elastic cover part is fitted in the front-end | tip part of the said exhaust pipe side hanger stay inserted in the said elastic member, and protrudes from the said elastic member, The Claim 1 or Claim 2 characterized by the above-mentioned. Exhaust pipe support structure. The exhaust pipe side hanger stay is provided at the front end of the muffler,
The muffler is disposed at the rear of the longitudinal wall portion of the step portion of the floor panel of the vehicle body in the vehicle front-rear direction.
The exhaust pipe support structure according to any one of claims 1 to 4, wherein the elastic member is disposed so as to face a vicinity of a rear surface of the vertical wall portion in the vehicle front-rear direction. .

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