JP2018203133A - Vehicle exhaust device - Google Patents

Abstract

To achieve improvement of assemblability and beauty of a muffler cover 5 covering a muffler.SOLUTION: An exhaust device 25 of a vehicle has: a muffler 4; and a muffler cover 5 in which a body cover part 51 covering the outer side of the muffler 4 in a vehicle width direction and a tail cover part 52 covering the rear side of the muffler 4 are integrally provided. In the muffler 4, a tail pipe 42 protruding rearward from a rear end part is provided and a design component 44 enclosing a periphery of the tail pipe 42 is provided. In the muffler cover 5, an opening is provided. In a vehicle side view and a vehicle rear view, an outer peripheral edge part of the design component 44 overlaps with an inner peripheral edge part of the opening provided at the muffler cover 5.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an exhaust device for a vehicle.

  For vehicles having an engine (internal combustion engine) such as a motorcycle, a muffler (silencer) that reduces exhaust noise is disposed as an exhaust device on the side of the rear wheel, and the muffler that covers at least a part of the muffler Some have a cover.

  In Patent Document 1, as a cover structure for covering a muffler of a motorcycle, a cylindrical muffler disposed on the side of a rear wheel, and at least one of the side surfaces of the muffler formed in a circular arc shape according to the outer shape of the muffler. A muffler cover that covers the muffler cover, and an end cap that is formed separately from the muffler cover and that is spaced apart from the muffler cover and covers the muffler from the rear side, and the center line of the muffler cover is the central axis of the muffler The structure attached to a muffler so that it may be located in the position where it approached to the radial direction is disclosed.

JP 2009-108824 A

  However, if the muffler cover and the end cap are separate, the number of parts increases and the number of fastening points such as screws increases, resulting in an increase in assembly man-hours. Further, if the muffler cover and the end cap are separate, a gap is likely to be formed between them, and fastening portions are increased and become conspicuous, which may impair the aesthetic appearance. Even when the muffler cover and the end cap are integrated, the fastening portion is conspicuous and the aesthetic appearance is impaired. Further, when the muffler cover and the end cap are integrated, the overall size of the member becomes large, and it becomes difficult to align the muffler and manage the size of the gap. In this case, in particular, the positional deviation from the tail pipe provided in the muffler is likely to increase, and as a result, the appearance aesthetics are easily affected.

  In view of the above circumstances, the problem to be solved by the present invention is to improve the assemblability of the muffler cover that covers the muffler and the aesthetics of the appearance in the exhaust device of the vehicle having the muffler.

  In order to solve the above problems, the present invention includes a muffler, and a muffler cover in which a body cover portion that covers a vehicle width direction outer side of the muffler and a tail cover portion that covers a rear side of the muffler are provided integrally, The muffler is provided with a tail pipe projecting rearward from a rear end portion, and a design part surrounding the tail pipe is provided. The muffler cover is provided with an opening, and the vehicle side view and In the vehicle rear view, the outer peripheral edge portion of the design part overlaps with the inner peripheral edge portion of the opening provided in the muffler cover.

  ADVANTAGE OF THE INVENTION According to this invention, in the exhaust apparatus of the vehicle which has a muffler, the assembly | attachment property of the muffler cover which covers a muffler, and the aesthetics of an external appearance can be aimed at.

FIG. 1 is a right side view schematically showing a configuration example of a motorcycle. FIG. 2 is a diagram schematically showing a configuration example of a muffler and a connecting pipe, where (a) is a top view, (b) is a side view from the center side in the vehicle width direction, and (c) is a view, respectively. It is a rear view. FIG. 3 is a diagram schematically illustrating a configuration example of the muffler cover, and FIG. 3A is a view of the state in which the muffler cover is attached to the muffler and the connecting pipe as viewed from the center in the vehicle width direction. ) Is a view of the muffler cover as viewed from the center side in the vehicle width direction, and (c) is a view of the second cover member forming the muffler cover as viewed from the center side in the vehicle width direction. FIG. 4 is a diagram schematically illustrating a configuration example of a muffler cover, and (a) is a view of a state in which the muffler cover is attached to the muffler and the connecting pipe as viewed from the outside in the vehicle width direction. ) Is a view of the state in which the first muffler cover is removed from the state shown in (a), as viewed from the outside in the vehicle width direction, and (c) is the second cover member that forms the muffler cover outside in the vehicle width direction. It is the figure seen from. FIG. 5 is a cross-sectional view schematically showing the configuration of the muffler cover and the vicinity of the rear end of the muffler. FIG. 6 is a rear view of the exhaust device.

<Outline of the invention>
The present invention includes a muffler, and a muffler cover in which a body cover portion that covers an outer side in the vehicle width direction of the muffler and a tail cover portion that covers a rear side of the muffler are integrally provided, and the muffler includes a rear end. A tail pipe protruding rearward from the part is provided, a design part surrounding the tail pipe is provided, an opening is provided in the muffler cover,
In the vehicle side view and the vehicle rear view, an outer peripheral edge portion of the design component overlaps with an inner peripheral edge portion of the opening provided in the muffler cover.

  According to such a structure, the influence which the position shift in an assembly | attachment has on the aesthetics of an external appearance can be reduced by attaching the design components around the tail pipe which are difficult to align to the tail pipe. For this reason, it is possible to improve the assemblability. For example, it is not necessary to use a jig for positioning. Furthermore, the appearance aesthetics can be improved. Further, by attaching the design part to the tail pipe, the gap between the muffler cover and the tail pipe can be minimized.

  The outer diameter of the design component may be larger than the inner diameter of the opening. According to such a configuration, the outer peripheral edge portion of the design part can be hidden by the muffler cover. For this reason, even when the positional deviation between the design part and the muffler cover becomes large, the positional deviation can be made difficult to understand.

  The inner peripheral edge of the opening may be provided with a rib-like portion that extends toward the muffler. According to such a configuration, the effect of hiding the outer peripheral edge portion of the design part with the muffler cover can be enhanced.

  The muffler cover includes a first cover member and a second cover member having a portion that covers a rear portion of the first cover member, and the opening is provided in the second cover member. It may be a configuration. According to such a configuration, the location where the muffler cover is fastened to the muffler can be hidden by the second cover member. For this reason, the aesthetics of an external appearance can be improved. Further, by providing an opening in the second cover member, the positional deviation between the opening and the design component can be reduced. For this reason, the shape of a muffler cover can be made into a shape with high design property.

  The second cover member may be configured to be fastened to the first cover member from the vehicle width direction center side. According to such a structure, the location where the 2nd cover member is fastened by the 1st cover member can be made visible from the vehicle width direction outer side. Therefore, it is possible to improve the appearance of the muffler cover.

  The two tail pipes may be arranged side by side in the vertical direction. Even in a configuration in which two tail pipes are provided, it is possible to suppress misalignment and improve the appearance aesthetics.

  The muffler cover covers the front side of the muffler, the outer side in the vehicle width direction, the upper side, and the rear side, and the muffler cover has a structure in which an air guide opening for taking in the running wind is provided at the front part. May be. According to such a configuration, it is possible to cool the muffler cover even when the design of the appearance of the muffler cover is prioritized and the muffler cover has a shape in which heat is easily trapped.

  The present invention is an exhaust system for a vehicle having a chamber, a muffler provided on a side of a rear wheel of the vehicle, a body cover portion that covers an outer side in the vehicle width direction of the muffler, and a tail cover portion that covers a rear side of the muffler. The muffler cover is fastened to a connecting pipe that connects the chamber and the muffler at the front end, and fastened to the muffler at the rear end. In the middle in the front-rear direction, the muffler is engaged so that it cannot be displaced relatively.

  According to such a configuration, it is possible to reduce the number of parts and the number of assembling steps that are assembled to the muffler and the connecting pipe, and it is possible to improve the assembling property. Further, since no cut is provided between the body cover portion and the tail cover portion of the muffler cover, it is possible to improve the aesthetic appearance of the muffler cover. Furthermore, since it is the structure which fastens a muffler cover only in two places, the improvement of an assembly | attachment property can be aimed at. Moreover, since the influence which a fastening location has on an external appearance can be reduced by reducing a fastening location, the improvement of the external appearance aesthetics can be aimed at.

  The rear end portion of the muffler is provided with a fastening portion that protrudes toward the rear side, and the muffler cover is fastened to the fastening portion at the rear end portion from the center side in the vehicle width direction. May be. By fastening the muffler cover from the center side in the vehicle width direction, the fastening portion can be prevented from appearing outside in the vehicle width direction.

  The front end portion of the connection pipe may be provided with a fastening portion that protrudes toward the front side, and the muffler cover may be fastened to the connection pipe from the front side at the front end portion. If it is the structure fastened from the front side, a fastening location can be made not conspicuous in the vehicle side view. Therefore, aesthetics can be improved. Also, the muffler cover can be designed with a sense of unity from the connecting pipe to the muffler.

  The muffler and the connecting pipe may be provided with a plurality of support portions that contact and support the muffler cover. With such a configuration, the distance between the muffler cover, the muffler and the connecting pipe can be kept at an appropriate distance even if the number of fastening points is two. Further, the deformation of the muffler cover can be suppressed.

<Embodiment>
Embodiments of the present invention will be described below in detail with reference to the drawings. In the embodiment described below, a configuration in which a vehicle exhaust device is applied to a motorcycle will be described as an example. In each figure, the front side of the motorcycle is indicated by the arrow “Fr”, the rear side by the arrow “Rr”, the right side by the arrow “R”, the left side by the arrow “L”, the upper side by the arrow “Up”, The side is indicated by the arrow “Dw”. The center in the vehicle width direction is indicated by “CENTER”, and the outer side in the vehicle width direction is indicated by “OUT”.

(Overall structure of motorcycle)
First, an example of the entire configuration of a motorcycle 1 to which the vehicle exhaust apparatus according to the present invention can be applied will be described with reference to FIG. FIG. 1 is a right side view schematically showing a configuration example of a motorcycle 1 to which a vehicle exhaust device according to an embodiment of the present invention is applied.

  The motorcycle 1 has a vehicle body frame (not visible in FIG. 1) made of, for example, an aluminum alloy. A front fork 13 is rotatably provided in the left-right direction at a front portion of the vehicle body frame, and a front wheel 14 is rotatably provided at a lower end portion of the front fork 13. A handle 15 is provided at the upper end of the. Further, a swing arm 21 is provided at the rear part of the body frame so as to be rotatable (swingable) in the vertical direction, and a rear wheel 22 as a drive wheel is rotatable at the rear end part of the swing arm 21. It is supported.

  An engine unit 20 (internal combustion engine) that is a driving force source of the motorcycle 1 is provided between the front wheel 14 and the rear wheel 22 (front side of the rear wheel 22) in the front-rear direction, and is suspended on the body frame. . The engine unit 20 has a cylinder assembly and a crankcase assembly. The cylinder assembly is provided with a cylinder, a combustion chamber, an intake port, and an exhaust port.

  A chamber 24 (expansion chamber) is provided on the lower rear side of the engine unit 20 and on the front side of the rear wheel 22. The exhaust port of the engine unit 20 and the chamber 24 are connected by an exhaust pipe 23 (exhaust pipe). The exhaust gas discharged from the exhaust port of the engine unit 20 flows into the chamber 24 through the exhaust pipe 23.

  A muffler 4 of the exhaust device 25 is provided on the side of the rear wheel 22 (on the right side in the example shown in FIG. 1). The muffler 4 and the chamber 24 are connected by a connecting pipe 3. The connecting pipe 3 is a tubular member, and the upstream end in the direction of the exhaust gas flow is connected to the side surface of the chamber 24 (the right side surface in the example shown in FIG. 1). The downstream end is connected to the front end of the muffler 4. The muffler 4 includes a cylindrical muffler body 41 which is a main body, a tail pipe 42 provided at the rear end portion of the muffler body 41, and a design component 44 provided so as to surround the tail pipe 42. In the embodiment of the present invention, the muffler 4 shows an example of a configuration having two tail pipes 42 arranged side by side in the vertical direction. The exhaust gas that has flowed out of the chamber 24 flows into the muffler body 41 of the muffler 4 through the connecting pipe 3, and the exhaust gas that has passed through the muffler body 41 is discharged into the outside air from each of the two tail pipes 42.

  Further, the motorcycle 1 is provided with a muffler cover 5. The muffler cover 5 covers the muffler 4 and the connecting pipe 3 in the vehicle width direction outer side, upper side, front side, and rear side. For this reason, the part excluding a part of the muffler 4 and the connecting pipe 3 are covered with the muffler cover 5 and are not visible from the outside in the vehicle width direction and from the rear side. However, a second opening 71 penetrating in the vehicle width direction is provided at the rear end portion of the muffler cover 5, and a part of the muffler 4 (a part of each of the tail pipe 42 and the design component 44) It can be seen from the outer side and the rear side in the vehicle width direction through the two openings 71.

  In addition, the motorcycle 1 is provided with a seat 16 on which a passenger (driver or passenger) sits, and a rear cowl 18 that covers both outer sides in the vehicle width direction of the rear portion of the motorcycle 1. For example, the rear cowl 18 is provided so as to cover a portion from the lower side to the rear side of the seat 16. A fuel tank 17 is provided on the front side of the seat 16, and a rear fender 19 is provided on the rear rear side of the rear wheel 22 at the rear end of the vehicle.

  The configuration of the motorcycle 1 is not limited to the above configuration. The motorcycle 1 includes a chamber 24 provided on the lower rear side of the engine unit 20 and on the front side of the rear wheel 22, a muffler 4 provided on the side of the rear wheel 22, and a connecting pipe that connects the muffler 4 and the chamber 24. 3 is sufficient.

(Exhaust device)
Next, a configuration example of the exhaust device 25 will be described. As shown in FIG. 1, the muffler 4 of the exhaust device 25 is provided on the rear side of the engine unit 20 and the chamber 24 and on the side of the rear wheel 22 (outside in the vehicle width direction). The muffler body 41 which is the main body of the muffler 4 and the chamber 24 are connected by the connecting pipe 3. The muffler body 41 and the connecting pipe 3 are covered with a muffler cover 5 on the outer side in the vehicle width direction, the upper side, the front side, and the rear side. For this reason, as shown in FIG. 1, the muffler 4 and the connecting pipe 3 have a muffler cover except for a part (a part of a tail pipe 42 and a design part 44 of the muffler 4 described later) in a side view of the vehicle. It will be in a state where it is covered with 5 and cannot be seen.

  The muffler cover 5 has a body cover part 51 and a tail cover part 52, which are integrally provided. The body cover portion 51 is a portion that covers the vehicle width direction outer side and upper side and front side of the muffler 4 and the connecting pipe 3 in the vehicle width direction outer side and upper side and front side. The tail cover part 52 is a part that covers the rear side of the muffler 4. As shown in FIG. 1, the tail cover portion 52 of the muffler cover 5 is provided with a second opening 71, and a tail pipe 42 and a part of the design component 44 provided in the muffler 4 It can be seen from the outer side and the rear side in the vehicle width direction through the second opening 71. Further, a wind guide port 511 for taking in the traveling wind is provided above the connecting pipe 3 in a portion that is near the front of the muffler cover 5 and covers the connecting pipe 3.

  Then, the exhaust gas of the engine unit 20 sequentially passes through the exhaust pipe 23, the chamber 24, and the connecting pipe 3 and flows into the muffler 4. Exhaust gas that has passed through the muffler 4 is released into the outside air through a tail pipe 42 provided at the rear end of the muffler 4.

  Here, the structural example of the muffler 4 and the connecting pipe 3 is demonstrated with reference to FIG. FIGS. 2A and 2B are diagrams schematically showing a configuration example of the muffler 4 and the connecting pipe 3, wherein FIG. 2A is a top view, FIG. 2B is a side view from the center in the vehicle width direction, and FIG. ) Is a rear view.

  The connecting pipe 3 is a tubular member, and connects the chamber 24 and the muffler body 41 that is the main body of the muffler 4. The upstream end of the connecting pipe 3 in the exhaust flow direction is connected to the side surface of the chamber 24 (the surface on the outer side in the vehicle width direction). The downstream end (rear end) of the connecting pipe 3 in the exhaust flow direction is connected to the front end of the muffler body 41. The connecting pipe 3 extends from the side surface of the chamber 24 toward the outside in the vehicle width direction and then curves toward the rear side. Then, a portion on the rear side of the curved portion (hereinafter referred to as the curved portion 31) extends to the rear side. For this reason, the bending part 31 is located in the front-end part of the connection pipe 3 regarding the front-back direction.

  The muffler 4 has a muffler body 41 which is a main body. The downstream end (rear end) of the connecting pipe 3 is connected to the front end of the muffler body 41. A rear end plate 411, two tail pipes 42, two outer cylinders 43, and two design parts 44 are provided at the rear end portion of the muffler body 41. The rear end plate 411 is a plate-like member provided so as to close the rear end portion of the muffler body 41. The two tail pipes 42 are members that serve as paths for discharging exhaust gas into the outside air, and are provided so as to protrude rearward from the rear end plate 411. Further, the two tail pipes 42 are provided so as to be aligned in the vertical direction (at positions shifted vertically). The two tail pipes 42 may be configured to be provided at positions shifted from each other in the vertical direction. For example, the two tail pipes 42 may be shifted from each other not only in the vertical direction but also in the vehicle width direction.

  The two outer cylinders 43 are cylindrical members that cover the outer circumferences of the two tail pipes 42. Similarly to the tail pipe 42, the two outer cylinders 43 are also provided so as to protrude rearward from the rear end plate 411. The two outer cylinders 43 are made of metal, for example, and are welded to the rear end plate 411 of the muffler body 41. The protruding length from the rear end plates 411 of the two outer cylinders 43 is shorter than the protruding length from the rear end plates 411 of the two tail pipes 42. Therefore, the rear end portions (tip portions in the protruding direction) of the two tail pipes 42 protrude from the two outer cylinders 43, respectively.

  The design component 44 is a member provided to improve the aesthetic appearance of the periphery of the tail pipe 42. The design component 44 is attached to the rear end portion (tip portion in the protruding direction) of each of the two outer cylinders 43. For example, the design component 44 is made of a metal plate in which a punching hole (not shown) is formed, and is fixed to the rear end portion of the outer cylinder 43 by welding or the like. And the design component 44 is provided so that the part which protrudes from the outer cylinder 43 of the tail pipe 42 may be enclosed. For example, the front end portion of the design component 44 is located on the front side of the rear end portion of the tail pipe 42, and the rear end portion of the design component 44 is located on the rear side of the rear end portion of the tail pipe 42. Yes. Thus, the design component 44 extends to the rear side of the rear end portion of the tail pipe 42. In addition, the design component 44 has a shape in which the vertical dimension and the vehicle width direction dimension increase toward the rear side (a shape in which the diameter increases in the case of a circle). As such a shape, for example, a conical shape or a dome shape can be applied.

  In the embodiment of the present invention, the muffler 4 has the outer cylinder 43 that covers the tail pipe 42, and the design component 44 is attached to the outer cylinder 43. However, the present invention is not limited to such a configuration. For example, the design component 44 may be attached to the tail pipe 42.

  The connecting pipe 3 and the muffler body 41 are provided with two fastening portions 47a and 47b and an insertion fixing portion 48 for fixing the muffler cover 5, and a plurality of support portions 49a to 49e that are in contact with and supported by the muffler cover 5. Is provided. One of the two fastening portions 47 a is provided on the curved portion 31 of the connecting pipe 3, and the other fastening portion 47 b is provided on the rear end plate 411 of the muffler body 41. For convenience of explanation, the fastening portion 47a provided in the curved portion 31 of the connecting pipe 3 is referred to as a first fastening portion 47a, and the fastening portion 47b provided in the rear end plate 411 of the muffler body 41 is referred to as a second fastening portion 47b. .

  The first fastening portion 47a is provided at the front end portion of the connecting pipe 3 so as to protrude toward the front side. Specifically, the first fastening portion 47a has a stay 471a, and a screw hole 472a is provided at the tip of the stay 471a in the protruding direction. The stay 471a is provided on the outer peripheral surface of the bending portion 31 of the connecting pipe 3 and on the outer surface in the radial direction of the curve in the vertical direction so as to protrude forward. The screw hole 472a is provided at the distal end portion (that is, the front end portion) in the protruding direction of the stay 471a so that the screw can be fastened from the front side. However, the specific configuration of the first fastening portion 47a is not particularly limited. The 1st fastening part 47a protrudes toward the front side from the front-end part (curved part 31) of the connection pipe 3, and should just be the structure which can fasten a screw | thread to the front-end part from the front side.

  The second fastening portion 47b is provided on the rear end plate 411 of the muffler body 41 so as to protrude rearward. Further, the second fastening portion 47b is provided so as to protrude rearward from between the two tail pipes 42 in the vertical direction. The second fastening portion 47b includes a stay 471b that is provided on the rear end plate 411 and protrudes rearward. And the screw hole 472b which can fasten a screw | thread from the vehicle width direction center side is provided in the front-end | tip part (namely, rear-end part) of the protrusion direction of this stay 471b. The specific configuration of the second fastening portion 47b is not particularly limited. The 2nd fastening part 47b should just be the structure which has a part which left | separated from the rear-end board 411 of the muffler body 41 to the rear side, and can fasten a screw | thread to this part from the vehicle width direction center side.

  The insertion fixing portion 48 is a portion that fixes (engages) the muffler covers 5 so that they cannot be displaced relative to each other by being inserted into the inserted fixing portions 63 provided on the muffler cover 5. The insertion fixing part 48 is provided between the first fastening part 47a and the second fastening part 47b in the vehicle longitudinal direction. In particular, the muffler cover 5 is preferably installed at a position corresponding to the center of the muffler cover 5 in the front-rear direction when the muffler cover 5 is attached. In the embodiment of the present invention, the vicinity of the front end portion of the muffler body 41 is shown as an example of such a position. However, the position where the insertion fixing portion 48 is provided is not limited to the vicinity of the front end portion of the muffler body 41. Further, the insertion fixing portion 48 is provided so as to protrude outward in the vehicle width direction and obliquely upward. For example, the insertion fixing portion 48 is provided with a stay 481 provided on the muffler body 41, an insertion convex portion 482 provided at a distal end portion of the stay 481 in the protruding direction, and further protruding from the distal end portion of the stay 481. Have However, the structure of the insertion fixing | fixed part 48 is not limited to such a structure. The insertion fixing part 48 may be configured to have an insertion convex part 482 provided at a position away from the surfaces of the muffler body 41 and the connecting pipe 3. Moreover, the insertion convex part 482 should just be a structure which can be inserted in the insertion recessed part 631 (after-mentioned) provided in the muffler cover 5. FIG.

  Further, the muffler body 41 and the connecting pipe 3 are provided with a plurality of support portions 49a to 49e. Each of the plurality of support portions 49a to 49e is a portion that supports the muffler cover 5 by abutting on the surface on the center side in the vehicle width direction of the muffler cover 5 (the surface on the side facing the muffler 4 and the connecting pipe 3). . The plurality of support parts 49a to 49e are provided so as to be positioned between the first fastening part 47a and the second fastening part 47b in the front-rear direction. In the embodiment of the present invention, a configuration in which a total of five support portions 49a to 49e are provided, that is, two support portions 49a and 49b provided on the connecting pipe 3 and three support portions 49c to 49e provided on the muffler body 41 is provided. Shown in the example. However, the number of support parts 49a-49e is not specifically limited.

  These support portions 49a to 49e are, for example, stays 491a to 491e provided so as to protrude from the muffler body 41 and the connecting pipe 3, and buffer members 492a to 492e provided at the distal ends of the stays 491a to 491e in the protruding direction. Have Then, the muffler cover 5 is supported by bringing the buffer members 492a to 492e into contact with the surface of the muffler cover 5 on the center side in the vehicle width direction. In addition, the specific structure of the support parts 49a-49e is not specifically limited. The support portions 49a to 49e are configured to contact the surface of the muffler cover 5 at the center in the vehicle width direction at a position away from the surfaces of the muffler body 41 and the connecting pipe 3, in other words, the inner peripheral surface of the muffler cover 5 is the muffler body. 41 and the structure which can support so that it may not contact the surface of the connection pipe 3 directly. Further, the configuration of the buffer members 492a to 492e is not particularly limited, and a member that can be elastically deformed, such as various known rubbers and sponges, can be applied.

  In addition, the muffler 4 and the connecting pipe 3 are provided with mounting stays 32 and 45 for fixing the muffler 4 and the connecting pipe 3 to a vehicle body frame or the like. FIG. 2 shows an example in which the muffler 4 and the connecting pipe 3 are provided with one mounting stay 32 and 45, respectively. In addition, the number of these attachment stays 32 and 45 and a concrete structure are not specifically limited. These may be any configuration as long as the muffler 4 and the connecting pipe 3 can be attached to the vehicle body frame or the like, and are appropriately set according to the configuration of the vehicle body frame of the motorcycle 1 or the like.

  Next, a configuration example of the muffler cover 5 will be described. 3 and 4 are diagrams schematically illustrating a configuration example of the muffler cover 5. FIG. 3A is a view of the state where the muffler cover 5 is attached to the muffler 4 and the connecting pipe 3 as viewed from the center side in the vehicle width direction. FIG. 3B is a view of the muffler cover 5 as viewed from the center side in the vehicle width direction. FIG. 3C is a view of the second cover member 7 forming the muffler cover 5 as seen from the center side in the vehicle width direction. FIG. 4A is a view of the state where the muffler cover 5 is attached to the muffler 4 and the connecting pipe 3 as viewed from the outside in the vehicle width direction. FIG. 4B is a view of the state where the first muffler cover 5 is removed from the state shown in FIG. FIG. 4C is a view of the second cover member 7 forming the muffler cover 5 as seen from the outside in the vehicle width direction.

  The muffler cover 5 is a member that covers the outer side in the vehicle width direction, the upper side, the front side, and the rear side of the muffler 4 and the connecting pipe 3 and is formed of a resin material. The muffler cover 5 has a body cover part 51 and a tail cover part 52. The body cover portion 51 is a portion that covers the vehicle width direction outer side, the upper side, and the front side of the muffler 4 and the connecting pipe 3. The tail cover part 52 is a part that covers the rear side of the muffler 4. The body cover portion 51 and the tail cover portion 52 are provided integrally (so as to have an integral appearance). The tail cover part 52 may be configured to be provided integrally with the body cover part 51 by extending the body cover part 51, or may be formed separately from the body cover part 51 and then integrated by screws or insertion. It may be. In short, any configuration may be used as long as no gap is formed between the body cover portion 51 and the tail cover portion 52.

  A first fastened portion 62 a for fastening to the first fastening portion 47 a of the connecting pipe 3 is provided at the front end portion of the muffler cover 5. Further, the tail cover portion 52 at the rear end portion of the muffler cover 5 is provided with a second fastened portion 62b for fastening to the second fastening portion 47b of the muffler 4. In addition, a to-be-fixed portion 63 for inserting the muffler 4 and the insertion fixing portion 48 of the connecting pipe 3 is provided between the first to-be-fastened portion 62a and the second to-be-fastened portion 62b in the front-rear direction. ing. In addition, it is preferable that the insertion fixing | fixed part 63 is a structure provided in the center part of the front-back direction. Thus, the muffler cover 5 has fastened portions (first fastened portion 62a and second fastened portion 62b) for fastening to the muffler 4 and the connecting pipe 3 at the front end portion and the rear end portion. Two each, one in total. An insertion fixing portion 63 for fixing the insertion fixing portion 48 is provided at the center in the front-rear direction.

  In addition, an air guide port 511 for taking in the traveling wind is provided at the front portion of the muffler cover 5. The tail cover portion 52, which is the rear portion of the muffler cover 5, is provided with a second opening 71 that exposes the tail pipe 42 to the vehicle width direction outer side and the rear side.

  The muffler cover 5 according to the embodiment of the present invention has a first cover member 6 and a second cover member 7 which are separate members, and are formed by integrally connecting them. Both the first cover member 6 and the second cover member 7 are made of a resin material. As shown in FIGS. 3 and 4, the first cover member 6 has a portion that becomes the body cover portion 51 and a portion that becomes the tail cover portion 52. The second cover member 7 is smaller than the first cover member 6. The second cover member 7 is attached to the rear portion of the first cover member 6 so as to straddle the portion from the portion that becomes the body cover portion 51 to the portion that becomes the tail cover portion 52. That is, the second cover member 7 also has a portion that becomes the body cover portion 51 and a portion that becomes the tail cover portion 52. Then, the tail cover portion 52 of the second cover member 7 is attached to the portion of the first cover member 6 that becomes the tail cover portion 52, so that the tail cover portion 52 is formed on the muffler cover 5. The

  As described above, the second cover member 7 is smaller than the first cover member 6 and is attached to the first cover member 6 so as to cover a part of the rear portion of the first cover member 6. The second cover member 7 covers a part of the first cover member 6 on the outer side in the vehicle width direction (portion that becomes the body cover portion 51) and the rear side (portion that becomes the tail cover portion 52). The screws for fixing the cover member 7 to the first cover member 6 are fastened from the center in the vehicle width direction (described later).

  A first fastened portion 62a, a second fastened portion 62b, and a fastened portion 63 to be fastened to fasten the muffler cover 5 to the muffler 4 and the connecting pipe 3 are provided on the first cover member 6. . The air guide port 511 for introducing the traveling wind is also provided in the front portion of the first cover member 6, for example, the front portion of the portion covering the muffler body 41 and the portion covering the connecting pipe 3. In addition, a first opening 61 is provided in a region 601 that is a rear portion of the first cover member 6 and is covered with the second cover member 7. Specifically, the first opening 61 is an opening provided in a portion that becomes the tail cover portion 52 and is provided so as to penetrate in the vehicle width direction and the front-rear direction. Further, the first opening 61 is larger than the second opening 71 provided in the second cover member 7.

  The first fastened portion 62a is a front end portion of the first cover member 6, and is provided in a portion that covers the curved portion 31 of the connecting pipe 3 from the front side. The front end portion of the first cover member 6 is curved in a top view so that the curved portion 31 of the connecting pipe 3 can be covered from the vehicle width direction outer side and the front side. The front end portion of the first cover member 6 enters the center side in the vehicle width direction with respect to the rear portion of the connecting pipe 3 and the portion covering the muffler body 41. Thus, the surface of the front end portion of the first cover member 6 is not parallel to the front-rear direction in top view but is inclined with respect to the front-rear direction (it may be a right angle). And the 1st to-be-fastened part 62a is provided in the part which is inclined with respect to the front-back direction, or a right-angle part instead of a part parallel to the front-back direction in the vertical direction view.

  And the 1st to-be-fastened part 62a is comprised by the screw insertion hole 621a which can insert a screw | thread from the front side, and the buffer member 622a provided in the surface of the side facing the connection pipe 3. FIG. In addition, the structure of the 1st to-be-fastened part 62a is not limited to such a structure. The first to-be-fastened portion 62a is located at the front end portion of the muffler cover 5 and is not parallel to the front-rear direction when viewed from above, and may be configured so that screws can be inserted from the front side in the front-rear direction.

  The second fastened portion 62 b is provided at a rear end portion of the second cover member 7 and a portion that becomes the tail cover portion 52. For example, the second fastened portion 62 b is provided on the rear side of the first opening 61. The second fastened portion 62b is provided inside the region 601 where the second cover member 7 is mounted. The second fastened portion 62b includes a screw insertion hole 621b through which a screw can be inserted from the vehicle width direction center side, and a buffer member 622b provided on the outer surface in the vehicle width direction.

  The inserted and fixed portion 63 is provided between the first fastened portion 62a and the second fastened portion 62b in the front-rear direction. It is preferable that the insertion fixing portion 63 has a configuration provided at the center portion in the front-rear direction of the first cover member 6. Further, the insertion fixing portion 63 is provided inside the region 601 where the second cover member 7 is mounted. The inserted and fixed portion 63 includes, for example, a boss-like portion 632 that protrudes toward the center in the vehicle width direction, and an insertion recessed portion 631 provided in the boss-like portion 632. The insertion concave portion 631 is a hole or a concave portion into which the insertion convex portion 482 can be inserted from the center side in the vehicle width direction. In addition, the specific structure of the insertion fixing | fixed part 63 is not specifically limited. The point is that the insertion convex portion 482 of the insertion fixing portion 48 provided on the muffler 4 can be inserted from the center side in the vehicle width direction, and in such a state, the displacement cannot be displaced relative to each other except the insertion / extraction direction. Good.

  In addition, the first cover member 6 is provided with attachment portions 64 a and 64 b for attaching and fixing the second cover member 7. The attachment portions 64a and 64b are provided with screw insertion holes 641a and 641b through which screws can be inserted from the center side in the vehicle width direction toward the outside. The numbers and positions of the attachment portions 64a and 64b are determined according to the numbers and positions of the attachment portions 72a and 72b provided on the second cover member 7.

  The second cover member 7 is a member that is attached across the portion that becomes the body cover portion 51 and the portion that becomes the tail cover portion 52 in the rear portion of the first cover member 6. The second cover member 7 is smaller than the first cover member 6, and covers a part of the first cover member 6 when attached to the first cover member 6. The rear portion of the second cover member 7 is a portion that becomes the tail cover portion 52, and this portion opens the first opening 61 of the first cover member 6 when attached to the first cover member 6. cover. In addition, two second openings 71 are arranged in the vertical direction in this portion. The second opening 71 is a through-hole-shaped opening that opens in the vehicle width direction and the front-rear direction. These second openings 71 are provided in the first cover member 6 when the second cover member 7 is attached to the first cover member 6 and viewed from the side and the rear of the vehicle. It is provided so as to overlap with the opening 61 (located inside the inner peripheral edge of the first opening 61). Further, a rib-like portion 73 that is folded back toward the front side is provided on the inner peripheral edge of the second opening 71 (see FIG. 5, which will be described later).

  In addition, the second cover member 7 is provided with a plurality of attached portions 72 a and 72 b for attaching and fixing to the first cover member 6. These attached portions 72a and 72b have a configuration in which screws can be fastened from the vehicle width direction center side (that is, the first cover member 6 side). For example, these attached portions 72a and 72b protrude toward the center in the vehicle width direction, and screw holes 721a and 721b are provided in the protruding portions. If it is such a structure, the to-be-attached parts 72a and 72b will not be visible from the vehicle width direction outer side. Further, these attached portions 72 a and 72 b are provided integrally with the second cover member 7. The positions and the number of the attached portions 72a and 72b are not particularly limited. For example, the two attached portions 72a are provided at the front position and the two attached portions are provided at the rear position. A configuration in which the portion 72b is provided can be applied. In this case, a configuration in which the rear two attached portions 72b are provided on the rear side of the second opening 71 can be applied.

  Next, an assembly structure of the muffler cover 5 to the muffler body 41 and the connecting pipe 3 will be described.

  The muffler cover 5 is attached to the muffler cover 5 and the connecting pipe 3 in a state where the first cover member 6 and the second cover member 7 are integrated in advance. First, the second cover member 7 is attached so as to cover the vehicle width direction outer side and the rear side of the first cover member 6. Then, the second cover member 7 is fastened to the first cover member 6 with screws from the center side in the vehicle width direction. As described above, the mounting portions 64a and 64b of the first cover member 6 are provided with screw insertion holes 641a and 641b penetrating in the vehicle width direction, and the mounted portions 72a and 72b of the second cover member 7 are provided on the mounting portions 72a and 72b. Are provided with screw holes 721a and 721b through which screws can be fastened from the center side in the vehicle width direction. For this reason, the mounted portions 72a and 72b of the second cover member 7 are overlapped on the vehicle width direction outer side of the mounting portions 64a and 64b of the first cover member 6, and in this state, screws are fastened from the vehicle width direction center side. Thus, the second cover member 7 can be fixed to the first cover member 6. Then, the first cover member 6 and the second cover member 7 are integrated. In addition, if it is a stage before attaching to the muffler 4 and the connection pipe 3, since the attachment parts 64a and 64b of the 1st cover member 6 are not covered with the muffler 4 and the connection pipe 3, attachment work is easy.

  When the second cover member 7 is attached to the first cover member 6, the first opening 61 of the first cover member 6 is covered with the second cover member 7. However, the second cover member 7 is provided with two second openings 71, and these two second openings 71 are the first openings 61 in the vehicle side view and the rear view. It is located inside the inner periphery. For this reason, the first opening 61 is not blocked by a portion that becomes the tail cover portion 52 of the first cover member 6. For this reason, the two second openings 71 provided in the second cover member 7 serve as openings for securing an exhaust path. In addition, the second fastening portion 47b and the insertion fixing portion 48 provided on the first cover member 6 are both covered with the second cover member 7, and cannot be seen from the outside in the vehicle width direction or from the rear side. Become.

  Then, the muffler cover 5 constituted by the first cover member 6 and the second cover member 7 is attached to the muffler 4 and the connecting pipe 3. Specifically, it is as follows.

  The first fastened portion 62a of the muffler cover 5 is fixed to the first fastening portion 47a of the connecting pipe 3 from the front side by screws. The first fastening portion 62a of the muffler cover 5 is provided with a screw insertion hole 621a penetrating in the front-rear direction, and the first fastening portion 47a of the connecting pipe 3 is a screw hole 472a through which a screw can be inserted from the front side. Is provided. And the 1st to-be-fastened part 62a of the muffler cover 5 is piled up on the front side of the 1st fastening part 47a of the connection pipe 3, and a screw is fastened from the front side in that state (in other words, from the outer side of the muffler cover 5). . As a result, the first fastened portion 62 a of the muffler cover 5 is fixed to the first fastened portion 47 a of the connecting pipe 3.

  The second fastening portion 62b of the muffler cover 5 is provided with a screw insertion hole 621b through which a screw can be inserted from the center side in the vehicle width direction, and the second fastening portion 47b of the muffler 4 has a center in the vehicle width direction. A screw hole 642b capable of fastening a screw from the side is provided. And the 2nd to-be-fastened part 62b of the muffler cover 5 is piled up on the vehicle width direction center side of the 2nd fastening part 47b of the muffler 4, In this state, the 2nd of the muffler cover 5 is made from the vehicle width direction center side. A screw is inserted into the screw insertion hole 621b of the fastened portion 62b and fastened to the screw hole 472b of the second fastening portion 47b of the muffler 4. As a result, the second fastened portion 62 b of the muffler cover 5 is fixed to the second fastened portion 47 b of the muffler 4. In addition, the 2nd fastening part 47b and the 2nd to-be-fastened part 62b are covered with the muffler cover 5, and will be in the state which cannot be seen from the vehicle width direction outer side and a rear side.

  The second fastening portion 47b protrudes rearward from the rear end plate 411 of the muffler body 41, and a screw hole 472b is provided at the tip in the protruding direction. According to such a configuration, since the screw can be fastened at a position away from the muffler body 41, it is easy to fasten the screw from the vehicle width direction center side.

  Further, the insertion convex portion 482 of the insertion fixing portion 48 provided in the muffler 4 is inserted into the insertion concave portion 631 of the insertion fixing portion 63 provided in the muffler cover 5 from the center side in the vehicle width direction. Thereby, the center part of the muffler cover 5 in the front-rear direction is fixed (engaged) so that it cannot be displaced relative to the muffler 4 except for the insertion / extraction direction.

  In this way, the muffler cover 5 is fastened and fixed to the muffler 4 and the connecting pipe 3 at a total of two locations, one at the front end and one at the rear end. Further, the muffler cover 5 is engaged with and fixed to the muffler 4 at the center in the front-rear direction.

  Further, a total of five support portions 49 a to 49 e provided on the muffler 4 and the connecting pipe 3 abut on the muffler cover 5 from the center side in the vehicle width direction. For this reason, the muffler cover 5 is supported from the center side in the vehicle width direction by the five support portions 49a to 49e. Each of the five support portions 49a to 49e has buffer members 492a to 492e, and the buffer members 492a to 492e abut on the surface of the muffler cover 5 on the center side in the vehicle width direction. These buffer members 492a to 492e (tip portions of the support portions 49a to 49e) are only in contact with the surface on the center side in the vehicle width direction of the muffler cover 5, and are not fixed with screws or the like. For this reason, a screw fastening operation or the like is not necessary for these five support portions 49a to 49e. That is, only by attaching the muffler cover 5 to the muffler 4 and the connecting pipe 3, the muffler cover 5 is supported by the support portions 49a to 49e.

  As described above, the muffler cover 5 is integrally provided with the body cover portion 51 and the tail cover portion 52. For this reason, the number of parts assembled to the muffler 4 and the connecting pipe 3 can be reduced, and the assemblability is improved. Moreover, since the body cover part 51 and the tail cover part 52 of the muffler cover 5 are integrated, the cut of the muffler cover 5 can be eliminated in design. For this reason, the aesthetics of the appearance of the muffler cover 5 can be improved. A design with a sense of unity can be configured from the connecting pipe 3 to the muffler 4.

  Further, the number of places where the muffler cover 5 is fastened to the muffler 4 and the connecting pipe 3 is two in total, one at the front end and one at the rear end. Further, the insertion fixing part 48 only needs to be inserted into the insertion fixing part 63 provided on the muffler cover 5. Therefore, the number of assembling steps can be reduced, and the assembling property can be improved.

  The first fastened portion 62 a of the muffler cover 5 is provided at the front end portion of the muffler cover 5. In particular, it is a portion located on the front side of the bending portion 31 of the connecting pipe 3 and is provided in a portion inclined in the front-rear direction or a right-angled portion when viewed in the vertical direction. For this reason, the first fastened portion 62a can be made inconspicuous in the vehicle side view. Note that the second fastened part 62b and the fastened part 63 to be fastened are both covered with the second cover member 7, and are not visible in the side view of the vehicle or the rear view. Furthermore, since screws or the like are not fastened to the five support portions 49a to 49e, the five support portions 49a to 49e are not visible from the outside in the vehicle width direction. Thus, according to the embodiment of the present invention, it is possible to make the fastening part to the muffler 4 and the connecting pipe 3 of the muffler cover 5 and the support parts 49a to 49e inconspicuous or invisible. Therefore, the aesthetics of the muffler cover 5 can be improved.

  FIG. 5 is a cross-sectional view schematically showing a configuration in the vicinity of the rear end portions of the muffler cover 5 and the muffler 4. As shown in FIG. 5, the muffler 4 is provided with two tail pipes 42 that protrude rearward from the rear end portion (rear end plate 411) of the muffler body 41 and the two tail pipes 42. A design component 44 is provided so as to surround each of them. The second cover member 7 forming the muffler cover 5 is provided with a second opening 71 so as to cover the periphery of the design component 44.

  As shown in FIG. 5, the outer dimension C (for example, the outer diameter) of the design component 44 is set to be larger than the inner peripheral dimension D (for example, the inner diameter) of the second opening 71. When the muffler cover 5 is attached to the muffler body 41 and the connecting pipe 3, the outer peripheral edge of the design component 44 provided on the outer cylinder 43 covering the tail pipe 42 in the vehicle side view and the rear view, and the second The inner peripheral edge of the second opening 71 provided in the cover member 7 overlaps. For this reason, in the vehicle side view and the rear view, the outer peripheral edge of the design component 44 is hidden by the inner peripheral edge of the second opening 71 of the second cover member 7. In other words, no gap is formed between the outer peripheral edge of the design component 44 and the inner peripheral edge of the second opening 71 in the vehicle side view and the rear view. Therefore, aesthetics can be improved.

  Further, with such a configuration, even when the design component 44 and the muffler cover 5 are misaligned during assembly, the outer peripheral edge of the design component 44 and the inner peripheral edge of the second opening 71 Is maintained in a state where no gap is formed between them. Therefore, it becomes easy to manage the positioning accuracy during assembly. For example, a jig for strictly positioning the design component 44 and the second cover member 7 may not be used. Therefore, it is possible to improve assemblability and aesthetics.

  Then, as shown in FIG. 5, a rib shape protruding toward the rear end plate 411 side of the muffler body 41 is formed on the inner peripheral edge of the second opening 71 of the second cover member 7 of the muffler cover 5. A portion 73 is provided. For this reason, the inner peripheral edge of the second opening 71 of the second cover member 7 has a cross-sectional shape that is bent toward the rear end plate 411 side of the muffler body 41. The rib-like portion 73 is formed such that the opening size becomes smaller toward the front end side (the rear end plate 411 side of the muffler body 41). According to such a configuration, a gap can be hardly generated between the inner peripheral edge of the second opening 71 and the outer peripheral edge of the design component 44 in the vehicle side view and the rear view. That is, if the rib-like portion 73 is not provided, a gap may be seen between the inner peripheral edge of the second opening 71 and the outer peripheral edge of the design component 44 depending on the viewing direction. On the other hand, when such a rib-shaped portion 73 is provided, a gap can be hardly generated between the inner peripheral edge portion of the second opening 71 and the outer peripheral edge portion of the design component 44. Moreover, the muffler cover 5 covers the periphery of the design component 44 and has a shape with high design.

  In addition, by providing the second opening 71 in the second cover member 7 that is smaller than the first cover member 6, the positional deviation between the second opening 71 and the design component 44 can be reduced. For this reason, the muffler cover 5 having a highly designable shape can be provided. Further, even in a configuration in which a plurality of (two in the present embodiment) tail pipes 42 are provided, misalignment can be suppressed. For this reason, the aesthetics of an external appearance can be improved.

  Furthermore, according to such a configuration, even if the muffler cover 5 is made of a resin material, the influence of heat received by the muffler cover 5 from the muffler 4 and the connecting pipe 3 can be reduced. That is, the first fastening portion 47a provided in the connecting pipe 3 protrudes forward from the curved portion 31, and the second fastening portion 47b provided in the muffler body 41 protrudes rearward from the rear end plate 411. The insertion fixing portion 48 protrudes outward in the vehicle width direction and obliquely upward. Further, the five support portions 49a to 49e also have stays 491a to 491e that protrude from the outer peripheral surfaces of the muffler 4 and the connecting pipe 3, respectively, and the muffler cover 5 is brought into contact with the tips in the protruding direction. Buffer members 492a to 492e that are in contact with each other are provided. For this reason, the muffler cover 5 is in a state of being supported by the muffler 4 and the connecting pipe 3 while being separated from the surfaces of the muffler 4 and the connecting pipe 3. A gap is formed between the muffler cover 5, the muffler body 41 and the connecting pipe 3. Further, an air guide port 511 that penetrates in the vehicle width direction is provided at the front portion of the muffler cover 5.

  For this reason, traveling wind flows into the muffler cover 5, the muffler body 41, and the connecting pipe 3 from the air guide port 511 and flows toward the rear side. For this reason, even if the muffler 4 is formed of a resin material, the muffler cover 5 can be cooled, and the muffler cover 5 is affected by the heat of the muffler 4 and the connecting pipe 3 (heat of exhaust). It can be difficult. According to such a configuration, the muffler cover 5 can be cooled, the muffler 4 and the connecting pipe 3 can be cooled even when the shape of the muffler cover 5 is a shape in which heat is more likely to be stored with priority given to the appearance. The influence of the heat received from can be reduced.

  FIG. 6 is a rear view of the exhaust device 25. As shown in FIG. 6, the vehicle width direction center side end portion of the tail cover portion 52 of the muffler cover 5 enters the vehicle width direction center side from the rear cowl 18 in the rear view. 6, A indicates the outermost position of the rear cowl 18 in the vehicle width direction, and B indicates the position of the end portion of the muffler cover 5 on the center side in the vehicle width direction. According to such a configuration, the entire rear end portion of the muffler 4 can be covered by the tail cover portion 52 of the muffler cover 5, and the rear end surface of the muffler body 41 can be hidden from the rear view. Therefore, aesthetics can be improved.

  As described above, according to the embodiment of the present invention, the muffler cover 5 integrated in advance is attached to the muffler 4 and the connecting pipe 3. For this reason, the number of parts assembled to the muffler 4 and the connecting pipe 3 can be reduced, and the assemblability can be improved. Moreover, since the body cover part 51 and the tail cover part 52 of the muffler cover 5 are integrally formed, the cut of the muffler cover 5 can be eliminated in design. For this reason, the aesthetics on the external appearance of the muffler cover 5 can be improved. Further, a design with a sense of unity can be formed from the connecting pipe 3 to the muffler 4.

  In addition, according to the embodiment of the present invention, the number of fastening locations of the muffler cover 5 to the muffler 4 and the connecting pipe 3 is two in total, one at the front end and one at the rear end. Further, the insertion fixing part 48 only needs to be inserted into the insertion fixing part 63 provided on the muffler cover 5. Therefore, it is possible to reduce the number of assembling work steps and simplify the work contents, and to improve the assembling performance.

  The first fastened portion 62 a is provided at the front end portion of the muffler cover 5. With such a configuration, the first fastened portion 62a can be made inconspicuous in the vehicle side view. The second fastening portion 47b and the insertion fixing portion 48 are covered with the second cover member 7 and cannot be seen from the outside in the vehicle width direction. Further, the five support portions 49a to 49e do not use screws or the like, and no special structure is provided at positions corresponding to the support portions 49a to 49e of the muffler cover 5, so that they can be seen from the outside in the vehicle width direction. Absent. In this way, the fastening points and the support portions 49a to 49e can be made inconspicuous and can be made invisible from the outside. Therefore, the aesthetics of the muffler cover 5 can be improved.

  The second fastening portion 47b has a stay 471b that protrudes rearward from the rear end plate 411 of the muffler body 41, and a screw hole 472b is provided at the tip of the stay 471b in the protruding direction. According to such a configuration, since the screw can be fastened at a position away from the muffler body 41, it is easy to fasten the screw from the vehicle width direction center side.

  Furthermore, the gap between the muffler cover 5, the muffler 4, and the connecting pipe 3 can be maintained at an appropriate size by the plurality of (in this embodiment, five) support portions 49 a to 49 e. In this manner, even if the number of fastening locations of the muffler cover 5 is reduced (two locations), the gaps between the muffler cover 5 and the muffler 4 and the connecting pipe 3 can be maintained at appropriate dimensions. Therefore, deformation of the muffler cover 5 can be suppressed. Further, in the configuration in which the muffler cover 5 is made of a resin material, the influence of heat that the muffler cover 5 receives from the muffler 4 and the connecting pipe 3 can be reduced.

  In addition, an air guide port 511 is provided at the front portion of the muffler cover 5, and the traveling air flowing from the air guide port 511 is configured to flow around the connecting pipe 3 and the muffler 4. According to such a configuration, the muffler cover 5 can be cooled, the muffler 4 and the connecting pipe 3 can be cooled even when the shape of the muffler cover 5 is a shape in which heat is more likely to be stored with priority given to the appearance. The influence of the heat received from can be reduced.

  In the embodiment of the present invention, the design component 44 is provided so as to surround the tail pipe 42. The outer peripheral edge portion of the design component 44 is provided so as to overlap the inner peripheral edge portion of the second opening 71 of the muffler cover 5 in the vehicle side view and the rear view. According to such a configuration, it is possible to reduce the influence of the assembly displacement on the appearance aesthetics. In other words, the outer peripheral edge of the design component 44 overlaps the inner peripheral edge of the second opening 71 of the muffler cover 5 and is hidden by the muffler cover 5 in the vehicle side view and the rear view. For this reason, even when the muffler 4 and the muffler cover 5 are misaligned (when the misalignment becomes large), the misalignment can be made inconspicuous. Further, it is possible to prevent a gap from being formed between the outer peripheral edge of the design component 44 and the inner peripheral edge of the opening of the muffler cover 5. Therefore, aesthetics can be improved.

  Also, with such a configuration, the influence of misalignment on the aesthetics can be reduced, so that the assembly accuracy can be easily managed. For example, a jig for strict alignment is not required, so that it is possible to improve the assemblability and the appearance. Further, by directly attaching the design component 44 to the outer cylinder 43, the gap with the tail pipe 42 can be minimized even if the muffler cover 5 is made of a resin material.

  In addition, a second opening 71 for exposing the rear end portion of the tail pipe 42 (securing an exhaust path) is provided in the second cover member 7 having a size smaller than that of the first cover member 6. . With such a configuration, the positional deviation between the second opening 71 and the design component 44 can be reduced. For this reason, the shape of the muffler cover 5 can be made into a shape with high designability. Further, even in a configuration in which a plurality of (two in the present embodiment) tail pipes 42 are provided, misalignment can be suppressed. For this reason, the aesthetics of an external appearance can be improved.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, the said embodiment only showed the specific example in implementation of this invention. The technical scope of the present invention is not limited to the embodiment described above. The present invention can be variously modified without departing from the spirit thereof, and these are also included in the technical scope of the present invention.

  The present invention is a technique effective for an exhaust device of a vehicle. And according to this invention, in the vagueness apparatus of the vehicle which has a muffler, the improvement of the assembly | attachment property of the muffler cover which covers a muffler, and the external appearance aesthetics can be aimed at.

1: motorcycle, 24: chamber, 25: exhaust device, 3: connecting pipe, 31: curved portion of connecting pipe, 4: muffler, 41: muffler body, 411: rear end plate of muffler body, 42: tail pipe, 43: outer pipe of the tail pipe, 44: design parts, 47a, 47b: first and second fastening portions, 471a, 471b: stays of the first and second fastening portions, 48: insertion fixing portion, 481: Stays for plug-in fixing portions, 49a to 49e: first to fifth support portions, 491a to 491e: stays for first to fifth support portions, 5: muffler cover, 51: body cover portion, 511: air guide port, 52: tail cover portion, 6: first cover member, 601: region covered with the second cover member, 61: first opening portion, 62a, 62b: first and second fastened portions, 63: Insertion fixing part, 632: Insertion fixing part Boss-like portions, 64a, 64b: attachment portions for attaching the second cover member, 7: second cover member, 71: second opening, 72a, 72b: attached portions attached to the first cover member, 73: Rib-shaped part

Claims (11)

Muffler,
A muffler cover in which a body cover portion covering the vehicle width direction outer side of the muffler and a tail cover portion covering the rear side of the muffler are provided integrally,
Have
The muffler is provided with a tail pipe protruding rearward from the rear end portion, and a design part surrounding the tail pipe is provided,
The muffler cover is provided with an opening,
An exhaust system for a vehicle, wherein an outer peripheral edge portion of the design part overlaps with an inner peripheral edge portion of the opening provided in the muffler cover in a vehicle side view and a vehicle rear view.   The exhaust device for a vehicle according to claim 1, wherein an outer diameter of the design component is larger than an inner diameter of the opening.   3. The vehicle exhaust device according to claim 1, wherein a rib-like portion extending toward the muffler is provided at an inner peripheral edge of the opening. The muffler cover includes a first cover member and a second cover member having a portion covering a rear portion of the first cover member,
4. The vehicle exhaust device according to claim 1, wherein the opening is provided in the second cover member. 5.   The exhaust device for a vehicle according to claim 4, wherein the second cover member is fastened to the first cover member from a vehicle width direction center side.   The vehicle exhaust device according to any one of claims 1 to 5, wherein the two tail pipes are arranged side by side in the vertical direction. The muffler cover covers the front side, the vehicle width direction outer side, the upper side and the rear side of the muffler,
The exhaust system for a vehicle according to any one of claims 1 to 6, wherein a wind guide port for taking in traveling wind is provided at a front portion of the muffler cover. An exhaust system for a vehicle having a chamber,
A muffler provided on the side of the rear wheel of the vehicle;
A muffler cover in which a body cover portion covering the vehicle width direction outer side of the muffler and a tail cover portion covering the rear side of the muffler are provided integrally,
Have
The muffler cover is fastened to a connecting pipe that connects the chamber and the muffler at a front end portion, and fastened to the muffler at a rear end portion, and cannot be relatively displaced to the muffler in the middle in the front-rear direction. An exhaust device for a vehicle characterized by being engaged as described above. The rear end portion of the muffler is provided with a fastening portion that protrudes toward the rear side,
The exhaust system for a vehicle according to claim 8, wherein the muffler cover is fastened to the fastening portion from a vehicle width direction center side at a rear end portion. The front end portion of the connecting pipe is provided with a fastening portion protruding toward the front side,
The exhaust system for a vehicle according to claim 8 or 9, wherein the muffler cover is fastened to the connecting pipe from the front side at a front end portion.   The exhaust system for a vehicle according to any one of claims 8 to 10, wherein the muffler and the connection pipe are provided with a plurality of support portions that are in contact with and supported by the muffler cover.

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