CN105275566B - The exhaust apparatus of pedal type vehicle - Google Patents

Abstract

The present invention provides a kind of exhaust apparatus of pedal type vehicle, in the pedal type vehicle using the exhaust apparatus, by avoiding necessary size, the trailing wheel movement of necessary depth with recess, the catalyst converter in exhaust silencer is set, it is able to maintain that the good aesthetic appearance of vehicle, vehicle body is avoided to maximize, also, need not pull down exhaust silencer just can carry out replacement operation to trailing wheel.In the exhaust apparatus of the pedal type vehicle, the opposite side that the Poewr transmission mechanism of side with being arranged on the trailing wheel is opposite is provided with exhaust silencer, the inside of the exhaust silencer is provided with catalyst converter, on the position facing with the axletree of rear wheel on the madial wall of the close trailing wheel side of exhaust silencer, formed with trailing wheel movement recess, the catalyst converter be configured in the exhaust silencer than trailing wheel movement with recess close to the position in front.

Description

The exhaust apparatus of pedal type vehicle

Technical field

The present invention relates to a kind of exhaust apparatus of pedal type vehicle.

Background technology

In the prior art, a kind of pedal car that the power unit that can be swung is supported with body shell known in people , in the pedal type vehicle, Poewr transmission mechanism is rearward extended by the internal combustion engine of power unit, is arranged on the power transmission For the axletree of rear wheel at the rear portion of mechanism from side supporting wheels, opposite with being arranged on the Poewr transmission mechanism of side of the trailing wheel is another Side is provided with exhaust silencer.

The axletree of rear wheel for setting oriented exhaust silencer side to protrude at the rear portion of Poewr transmission mechanism, due to the wheel of trailing wheel Hub is mutually chimeric with the axletree of rear wheel, and wheel hub and axletree of rear wheel are fixed together by nut etc., so that trailing wheel is arranged on On axletree of rear wheel, therefore when pulling down from vehicle body trailing wheel, the fixation to trailing wheel such as nut is released, makes trailing wheel in axial direction The movement of exhaust silencer side, wheel hub is pulled out from axletree of rear wheel, so that trailing wheel be pulled down.

Now, by pulling down exhaust silencer in advance, trailing wheel can be moved to and pulls down what is be available after exhaust silencer On beside, so as to easily be pulled down, still, when changing trailing wheel every time, it is necessary to which exhaust silencer is torn open Unload and install, it is very troublesome.

Therefore, just can be in the row beside the trailing wheel being installed on axletree of rear wheel and its in order to which exhaust silencer need not be pulled down The space that trailing wheel can pass through is ensured between gas silencer, proposes a kind of exhaust apparatus of silencer shape (ginseng in the prior art According to patent document 1), in the exhaust apparatus, make the madial wall of trailing wheel side of exhaust silencer close to lateral wall, with reduce its Width (left and right width) on overall width direction, and correspondingly expand its width in the vertical direction, ensure its capacity to be formed Shape, also, recess of the trailing wheel movement with (dismounting trailing wheel use) is provided with the part facing with axletree of madial wall.

【Patent document 1】Japanese utility model patents Publication opens clear No. 63-17819 in fact

But in recent years, in order to realize the innoxious of the harmful substance included in exhaust gas, typically in gas extraction system Upper setting catalyst (hereinafter simply referred to as " catalyst converter "), for the efficiently utilization space when configuring catalyst converter, known one Catalyst converter is configured the device in exhaust silencer by kind, still, because catalyst converter is bigger part, so it easily exists Larger space is occupied in exhaust silencer.

Therefore, if forming trailing wheel movement recess like that on exhaust silencer as Patent Document 1, can exist as follows Problem：Because catalyst converter occupies larger space in exhaust silencer, the recess shapes are easily restricted, and are hardly formed enough Greatly, recess deep enough is come for trailing wheel movement.

Then, necessary space just can be ensured between trailing wheel and exhaust silencer in order to not pull down exhaust silencer, It is contemplated that the outside that exhaust silencer is moved on overall width direction is configured away from trailing wheel, it is possible that can produce Raw following problems, i.e. from rear during vehicle, because the interval between trailing wheel and exhaust silencer is larger, cause aesthetic appearance Reduce, or because exhaust silencer is to the outside bulging on overall width direction, cause vehicle body maximization etc..

The content of the invention

In view of the above problems, it is an object of the present invention to provide a kind of exhaust apparatus of pedal type vehicle, filled in the exhaust In putting, by avoiding necessary size, the trailing wheel movement of necessary depth configure the catalyst converter in exhaust silencer with recess, can The good aesthetic appearance of vehicle is maintained, avoids vehicle body from maximizing, also, exhaust silencer need not be pulled down just can to change trailing wheel.

To reach above-mentioned purpose, technical scheme 1 is：A kind of exhaust apparatus of pedal type vehicle, is arranged on dynamic The side of the axletree of rear wheel supporting wheels at the rear portion of force transfer mechanism, wherein, the Poewr transmission mechanism by power unit internal combustion Machine is rearward extended, and the power unit is supported on body shell in a manner of it can swing；With being arranged on the trailing wheel The opposite opposite side of the Poewr transmission mechanism of side be provided with exhaust silencer, the inside of the exhaust silencer is provided with catalysis Device；On the position facing with the axletree of rear wheel on the madial wall of the close trailing wheel side of the exhaust silencer, shape Into there is trailing wheel movement recess；The catalyst converter is configured in the recess of trailing wheel movement described in ratio in the exhaust silencer Close to the position in front.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 1, technical scheme 2 is：With axletree of rear wheel Axis on the basis of, the maximum projecting position phase with the front part of the exhaust silencer to the rear wheel-side on overall width direction Than the rear section of the exhaust silencer is farther apart from trailing wheel to the maximum projecting position of the rear wheel-side on overall width direction.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 1 or 2, technical scheme 3 is：The exhaust Silencer is formed as, and its width in the vertical direction is more than its width on overall width direction, also, the exhaust silencer It is configured to, covers the axletree of rear wheel during vehicle completely from side, the catalyst converter configuration is relative to including after described On the position of imaginary horizontal plane deviation lower side including the axis of wheel axletree.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 3, technical scheme 4 is：The catalyst converter Set with low early and high after inclination attitude, it is imaginary described in the front distance of the catalyst converter compared with the rear portion of the catalyst converter Horizontal plane (H) is farther.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 3 or 4, technical scheme 5 is：The exhaust Silencer is configured to, and the upper end that its top edge is located at the wheel rim than the trailing wheel is configured at close to the position of downside, liquid reserve tank The top of the exhaust silencer, and from side during vehicle, it is located at the position overlapped with the trailing wheel.

On the basis of the exhaust apparatus of pedal type vehicle in technical scheme 1~5 described in any one, technical scheme 6 For：On the madial wall of the close trailing wheel side of the exhaust silencer, formed around the recess of the trailing wheel movement After thering is the 2nd trailing wheel movement recess, the trailing wheel correction recess to be located at the described 2nd of the inner side depression to the exhaust silencer The central portion of movement recess is taken turns, is more recessed than the 2nd trailing wheel movement with recess to the inner side of exhaust silencer and is formed, institute State catalyst converter configuration than the 2nd trailing wheel movement recess close to the position in front.

On the basis of the exhaust apparatus of pedal type vehicle in technical scheme 1~6 described in any one, technical scheme 7 For：The inside division of the exhaust silencer is arranged at than the trailing wheel movement recess for the divider wall parts of multiple expanding chambers Close to the position in front, the catalyst converter is supported in the divider wall parts.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 7, technical scheme 8 is：The exhaust disappears In sound device, closed by configuring the rear wheel-side on overall width direction, the i.e. inner side half-shell of inner side with outside half-shell of the configuration in outside Muffler shell is formed together, and the exhaust silencer is supported on the internal combustion engine by the silencer support frame, described to disappear Sound device bearing support is welded on the outer surface for the installation position for being provided with the divider wall parts of the muffler shell.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 8, technical scheme 9 is：The silencer Bearing support has：1st welding arm, it is welded on the installation for being provided with the divider wall parts of the muffler shell On the outer surface at position；2nd welding arm, it is welded on the peace that the ratio of the muffler shell is provided with the divider wall parts Position is filled on the outer surface at the position of rear side；3rd welding arm, it is welded on the ratio of the muffler shell and is provided with On the outer surface at the position of front side, the 2nd welding arm is welded on than described for the installation position of the divider wall parts Trailing wheel movement recess is close to the position in front.

On the basis of the exhaust apparatus of the pedal type vehicle described in technical scheme 9, technical scheme 10 is：The silencer On bearing support the described 1st, the 2nd, the 3rd welding arm be mutually dispersedly welded on the muffler shell upper end, under On the optional position in pars intermedia on end, above-below direction.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 1, due to urging positioned at the inside of exhaust silencer Change device be configured in than trailing wheel movement with recess on the position in front, therefore, it is possible to avoid the formation of in exhaust silencer The interference between trailing wheel movement recess and catalyst converter on madial wall, largely ensure that the free degree of recess shapes, Wherein, trailing wheel movement is formed at the position facing with axletree of rear wheel with the madial wall of exhaust silencer with recess.

Therefore, using the exhaust apparatus of the pedal type vehicle described in technical scheme 1, exhaust silencer can be suppressed to overall width Outside bulging or stretching on direction, further, it is possible to the trailing wheel movement recess of necessary size, necessary depth is readily formed, So as not to remove the replacement operation that exhaust silencer can just be removed and installed to trailing wheel.

By forming such a trailing wheel movement recess, the good aesthetic appearance of vehicle can either be maintained, avoids vehicle body big Type, and can simply carry out replacement operation without pulling down exhaust silencer to trailing wheel.

Further, since catalyst converter does not configure the rearward position inside exhaust silencer, therefore, it is possible to make exhaust silencer Width of the rear section on overall width direction it is smaller, in such manner, it is possible to ensure the withdrawal space of larger trailing wheel in rear side, so as to Trailing wheel is easily pulled down or is installed to vehicle body rear from vehicle body rear.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 2, due on the basis of the axis of axletree of rear wheel, institute State the maximum projecting position to the rear wheel-side on overall width direction of the rear section of exhaust silencer than on front side of it to overall width side The maximum projecting position of upward rear wheel-side is away from trailing wheel, therefore, it is possible to pull down exhaust silencer, and by trailing wheel to space Upper more relaxed rear movement, so as to easily pull down trailing wheel, or is easily installed trailing wheel from rear.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 3, because exhaust silencer is formed as above-below direction On width be more than overall width direction on width, therefore, it is possible to while the capacity of exhaust silencer is ensured, make exhausting silencer The madial wall of the close trailing wheel side of device reduces its width on overall width direction, is upwardly formed in overall width side close to lateral wall Flat pattern, thereby, it is possible to maintain good aesthetic appearance, and easily ensure between trailing wheel and its exhaust silencer of side The space passed through for trailing wheel.

Further, since exhaust silencer configures in a manner of covering the axletree of rear wheel completely when the vehicle from side, Catalyst converter is configured in is inclined on the position of lower side relative to the imaginary horizontal plane of the axis including the axletree of rear wheel, because This, can make the center of gravity for including the exhaust silencer of heavier catalyst converter be located at relatively low position, realize that pedal type vehicle is good Operational stability.

When trailing wheel is pulled down from vehicle body rear, it is necessary to the axis including axletree of rear wheel imaginary horizontal plane and its near Ensure to dismantle the space needed for trailing wheel, because larger catalyst converter is configured in the position relative to imaginary horizontal plane deviation lower side Put, therefore, it is possible to readily insure that the space needed for dismounting trailing wheel.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 4, due to being configured in relative to including trailing wheel car Catalyst converter on the position of the imaginary horizontal plane deviation lower side of the axis of axle is set with low early and high after inclination attitude, with this The rear portion of catalyst converter is compared, and it is anterior away from imaginary horizontal plane, and therefore, catalyst converter is closer to its front side, more from imaginary horizontal plane Close to lower section, so that, when making trailing wheel pull down trailing wheel under right-oblique state to the left, the front portion of trailing wheel is not susceptible to To the interference of catalyst converter, more easily trailing wheel can be pulled down and be installed trailing wheel.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 5, exhaust silencer is configured at relatively low position, should The upper end-face edge of exhaust silencer is located at the upper end of the wheel rim than trailing wheel close to the position of lower section, and thereby, it is possible in exhausting silencer The position being readily seen that and the position overlapped from side during vehicle with trailing wheel above device, configuration liquid reserve tank is with efficiently Utilization space, so as to which also the liquid measure inside liquid reserve tank, maintenance easy to maintain easily can be confirmed from outside.

In addition, catalyst converter is arranged on relative under the imaginary horizontal plane deviation including the axis of the axletree of rear wheel On the position of square side, therefore, even by liquid reserve tank configuration on the position close to exhaust silencer, because liquid reserve tank is positioned at row The top of gas silencer, so it is not readily susceptible to the influence of catalyst converter heating.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 6, in the close trailing wheel side of exhaust silencer On madial wall, formed with the 2nd trailing wheel movement recess around trailing wheel movement recess, recessed to the inner side of exhaust silencer The central portion of the 2nd sunken trailing wheel movement recess is formed with trailing wheel movement recess, and the trailing wheel movement is with recess than the 2nd trailing wheel It is mobile to be more recessed with recess to the inner side of exhaust silencer, due to catalyst converter be configured in it is more close than the 2nd trailing wheel movement recess The position in front, therefore, it is possible to avoid trailing wheel movement recess and the 2nd trailing wheel movement recess from being interfered by catalyst converter, really Protecting recess shapes has the larger free degree, is also able to easily form necessary size, the 2nd trailing wheel of necessary depth is moved with recessed Portion, so as to which exhaust silencer need not be pulled down, and more easily carry out removing and installing operation also, by setting to trailing wheel The 2nd trailing wheel movement recess is put, exhaust silencer can be made to realize vehicle on overall width direction closer to trailing wheel side Miniaturization, aesthetic appearance when improving vehicle from rear, makes vehicle be easier parking.

Further, since in exhaust silencer on the madial wall of trailing wheel side, it is from peripheral part to exhaust silencer Inner side is recessed and forms the 2nd trailing wheel movement recess, and the central portion of the 2nd trailing wheel movement recess is further to exhaust silencer Inner side is recessed and forms trailing wheel movement recess, in addition, in the neighboring of the 2nd trailing wheel movement recess formed with bending section, In the intersection of centrally located trailing wheel movement recess and the 2nd trailing wheel movement recess formed with bending section, pass through the two Bending section, the rigidity of the madial wall of exhaust silencer can be increased.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 7, divider wall parts are arranged on to move than trailing wheel and used Recess is supported with catalyst converter on the position in front, the divider wall parts, is used therefore, it is possible to make divider wall parts not moved with trailing wheel Recess interference and be configured, so as to ensure that the free degree of the recess shapes of trailing wheel movement recess is bigger, easily Form the trailing wheel movement recess of necessary size, necessary depth.

In addition, divider wall parts supporting catalytic device securely can be made.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 8, have and closed by inner side half-shell and outside half-shell The exhaust silencer of the muffler shell formed together by silencer branching bolster supporting on internal combustion engine, due to silencer bearing support It is welded on the outer surface for the installation position for being provided with divider wall parts of muffler shell, thus by by silencer bearing support It is welded on due to divider wall parts and on the outer surface of the installation position for being provided with divider wall parts of the muffler shell of rigidity increase, Exhaust silencer is securely supported on internal combustion engine.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 9, because silencer bearing support has the 1st welding arm Portion, the 2nd welding arm and the 3rd welding arm, wherein, what the 1st welding arm was welded on muffler shell is provided with partition wall On the outer surface of the installation position in portion, the ratio that the 2nd welding arm is welded on muffler shell is provided with divider wall parts Installation position on the outer surface at the position at rear, the 3rd welding arm is welded on the ratio of muffler shell and is provided with The installation position of divider wall parts is on the outer surface at the position in front, therefore, by by the 1st of silencer bearing support the, the 2nd, 3rd welding arm is welded on the position and its front and back position of divider wall parts, can make exhaust silencer by firm twelve Earthly Branches Hold on internal combustion engine.

Also, due to positioned at than divider wall parts on the position at rear and be welded on muffler shell the 2nd weldering Connect arm to be welded on than trailing wheel movement with recess close to the position in front, therefore, the 1st, the 3rd welding arm is also welded on ratio Trailing wheel movement recess can avoid trailing wheel movement recess from being interfered by silencer bearing support, carry close to the position in front The free degree of its high recess shapes, so as to use most suitable recess shapes, not pulling down exhaust silencer just can be to rear The replacement operation removed and installed is taken turns, is stretched out further, it is possible to suppress exhaust silencer to the outside on overall width direction.

Using the exhaust apparatus of the pedal type vehicle described in technical scheme 10, due to the 1st of silencer bearing support the, the 2nd, 3 welding arms are mutually dispersedly welded separately in the pars intermedia on the upper end of exhaust silencer, bottom, above-below direction Any one position, therefore, it is possible to make exhaust silencer be more securely supported on internal combustion engine.

Brief description of the drawings

Fig. 1 is the overall side view of the pedal type vehicle involved by an embodiment of the invention.

Fig. 2 is the partial side view of the pedal type vehicle after pulling down protective cover, case cover and body shell etc..

Fig. 3 is the rearview of the pedal type vehicle after pulling down protective cover, case cover and body shell etc..

Fig. 4 is the partial top view after pulling down case cover and body shell etc..

Fig. 5 is the V-V sectional views of the V-V lines section view along Fig. 2.

Fig. 6 is the stereogram of exhaust silencer and silencer bearing support.

Fig. 7 is the side view of exhaust silencer and silencer bearing support.

Fig. 8 is the longitudinal section of the exhaust silencer.

Fig. 9 is the V-V sectional views of the IX-IX lines section view along Fig. 7.

For Figure 10 equivalent to the V-V sectional views in Fig. 2, it represents a process for pull down trailing wheel operation.

For Figure 11 equivalent to the V-V sectional views in Fig. 2, it represents the next process for pull down trailing wheel operation.

For Figure 12 equivalent to the V-V sectional views in Fig. 2, it represents next one process for pull down trailing wheel operation.

Embodiment

1~12 illustrates an embodiment of the invention with reference to the accompanying drawings.

Fig. 1 is the side view for the pedal two-wheeled motor vehicle 1 for being applicable an embodiment of the invention.

In addition, in the explanation of this specification and claims, direction all around is all according to common benchmark, i.e., Using the direction of advance of the pedal two-wheeled motor vehicle 1 of present embodiment as front.

Arrow FR represents vehicle front in figure, and LH represents vehicle left, and RH represents vehicle right, and UP represents vehicle up direction.

Body forward structure 1f and body tail 1r is attached by relatively low base plate 1c, forms the vehicle body frame of the skeleton of vehicle body Frame is substantially made up of down pipe 3 and supervisor 4.

That is, down pipe 3 extends downwards from body forward structure 1f head tube 2, the down pipe 3 in lower ends bent to level, in Base plate 1c lower section rearward extends, and the rear end of down pipe 3 and pair of right and left supervisor 4 be connecteds, is responsible for 4 from the connecting portion to oblique Extension is erect in back upper place, bends to level after specified altitude is extended to, rearward extends afterwards.

Fuel tank 5 is supported with the setting rake of the supervisor 4, the horizontal part of extension is provided with load-carrying in rearward position Frame 6, vehicle seat 7 is configured with the top of fuel tank 5.

In addition, in body forward structure 1f, handlebar 8 is supported with above head tube 2, and the handlebar 8 can rotate, in head tube 2 Lower section, which is extended, front fork 9, and the lower end of front fork 9 is supported with front-wheel 10, and the front-wheel 10 can rotate.

Reference picture 1 and Fig. 2, the standing portion for being responsible for 4 have been provided projectingly support 4b, support 4b by connection member 11 with The mode that power unit 20 can be swung supports power unit 20.

The front portion of power unit 20 is the water-cooled engine 21 of single-cylinder four-stroke, overlapping successively in the front of crank box 22 And it is provided with cylinder block 23, cylinder head 24, valve mechanism cover 25 with being connected with each other, also, power unit 20 is in significantly to turn forward Posture, until cylinder-bore axis close to level.

Suspended scaffold 22b is protruded forwards from the lower-end front portion of crank box 22, and suspended scaffold 22b end passes through Pivot (pivot branch) 11p is connected with connection member 11.

In addition, the lower-end rear portion in crank box 22 is supported with main foot stool 13, the main foot stool 13 can by swing to put down, Withdraw, when main foot stool 13 is withdrawn, it across to trailing wheel 40, and substantially receives dress from front by level.

Reference picture 5, in power unit 20, it is inclined to left side and is formed towards rear have belt buncher from internal combustion engine 21 31, it is provided with reducing gear 33, the axletree of rear wheel 35 as the output shaft of reducing gear 33 at the rear portion of belt buncher 31 Protrude to the right, the side of the supporting wheels 40 of axletree of rear wheel 35.

Belt buncher 31 and reducing gear 33 are the Poewr transmission mechanism being rearward extended by internal combustion engine 21.

Crank box 22 by be respectively left part and right part left crank box 22L and right crank box 22R zoariums form, Right crank box 22R forms the half of crank case portion, and in left crank box 22L, its front portion forms second half of crank case portion, and And it is rearward bloated, the function of driving section casing is had concurrently, to be housed in belt buncher longer on fore-and-aft direction 31。

The left outer surface longer in the longitudinal direction of left crank box (driving section casing) 22L is transmitted portion's casing cover 26 cover, and its internal receipts is equipped with belt buncher 31, left crank box (driving section casing) 22L positioned at the right side at rear portion Outer surface is decelerated machine shell 27 and covered, and its internal receipts is equipped with reducing gear 33.

Rear bumper 12 (reference picture 1) is clamped between the rear portion of decelerator shell 27 and the supervisor 4.

Reference picture 5, belt buncher 31 are by the way that V-type band 31a is wound into active wheel and slave operation wheel Carry out the device of passing power on 31b, by changing winding radius of the V-type with 31a, to change gear ratio, realize electrodeless variable-speed, its In, active wheel is by not shown crank e axle supporting in figure, and the active wheel can rotate, slave operation wheel 31b quilts The input shaft 33a supportings of reducing gear 33, and slave operation wheel 31b can be rotated.

Centrifugal clutch 32 is provided with input shaft 33a left part, the centrifugal clutch 32 turns according to internal combustion engine Speed and be in engagement state or released state, when centrifugal clutch 32 is in engagement state, be delivered to slave operation wheel 31b move Power, it is delivered to input shaft 33a.

Reducing gear 33 is gear mechanism, and in the reducing gear 33, gear 34a, 34b are in input shaft 33a and jackshaft It is meshed between 33b, gear 34c, 34d are meshed between jackshaft 33b and axletree of rear wheel 35, so that output shaft 33a Rotate and pass to axletree of rear wheel 35 after slowing down, so as to drive trailing wheel 40 to rotate.

Axletree of rear wheel 35 is supported by bearing 27b, its be formed through in the bearing hole in the side wall of decelerator shell 27 and to Right side is protruded, and it can be rotated.

The right part diameter of axletree of rear wheel 35 reduces, and formed with external screw thread 35s (reference picture 10).

In addition, on the trailing wheel wheel 41 of trailing wheel 40, extended radially out centered on the hub for vehicle wheel 42 in center The outer end in spoke portion 43 be formed with wheel rim 44, the periphery of the wheel rim 44 is chimeric to be provided with tire 45, so as to form trailing wheel 40。

Hub for vehicle wheel 42 is made up of bearing cylindrical portion 42a, braking tympanic part 42b and clutch disk plate portion 42c, wherein, bearing Cylindrical portion 42a is located at central part, chimeric with axletree of rear wheel 35, and braking tympanic part 42b is cylindrical, and it is same with bearing cylindrical portion 42a Axle, bearing cylindrical portion 42a periphery is configured at around bearing cylindrical portion 42a, clutch disk plate 42c is hollow plectane Shape, its one end (being right-hand member in Fig. 5) for connecting bearing cylindrical portion 42a and braking tympanic part 42b.

Therefore, hub for vehicle wheel 42 bearing cylindrical portion 42a outer peripheral face, and on braking tympanic part 42b inner peripheral surface, Formed with the annular recessed portion 42h in annular shape depression, annular recessed portion 42h is open to the left, and drum brake 50 is arranged at this In annular recessed portion 42h.

It is provided with the braking tympanic part 42b of hub for vehicle wheel 42 inner peripheral surface and casts liner 46 made of iron.

In addition, the inner peripheral surface in the bearing cylindrical portion 42a of hub for vehicle wheel 42 chimeric is provided with bushing 47.

Axletree of rear wheel 35 is protruded to the right in the side wall from decelerator shell 27, the bearing cylindrical portion with axletree of rear wheel 35 42a is compared protrudes the external screw thread 35s of right part to the right, make the bearing cylindrical portion 42a of trailing wheel wheel 41 across bushing 47 with Axletree of rear wheel 35 is chimeric, then screws external screw thread 35s phase of the nut 37 across packing ring 36 with right part, so that hub for vehicle wheel 42 Bearing cylindrical portion 42a be connected between nut 37 and bearing 27b inner ring, trailing wheel 40 is integrally thus installed to trailing wheel car On axle 35.

Thus, the side of trailing wheel 40 is supported by axletree of rear wheel 35.

The opening direction of annular recessed portion 42h between the bearing cylindrical portion 42a and braking tympanic part 42b of hub for vehicle wheel 42 is left In the state of side, trailing wheel 40 is installed on axletree of rear wheel 35, from decelerator shell 27 to annular recessed portion 42h inside be provided projectingly Have a pair of fixing pins 51, a pair of brake-shoes 52 are supported in a manner of it can swing by a pair of fixing pins 51, also, this one The liner 46 of inner peripheral surface of the brake-shoe 52 along braking tympanic part 42b is located in annular recessed portion 42h, so as to form drum brake 50。

As shown in Fig. 2 the top of cylinder head 24 is significantly leaned forward in the front of the internal combustion engine 21 of power unit 20, air intake duct 60 extend out from the top of the cylinder head 24 and rearward bend, and the throttling valve body 61 being connected with the air intake duct 60 is located at The top of cylinder block 23, air cleaner 63 are connected by connecting tube 62 with the throttling valve body 61, also, its belt without The top of pole speed changer 31 supports (reference picture 4) by left crank box (driving section casing) 22L.

In addition, reference picture 2, the blast pipe 70 extended downwards from the bottom of cylinder head 24 lateral bend to the right, around right side Suspended scaffold 22b outside, rearward extend in the bottom side of crank box 22, so as to being arranged on the right side of trailing wheel 40 The exhaust silencer 71 of side is connected, wherein, the suspended scaffold 22b on right side protrudes from the lower end of crank box 22.

Therefore, as shown in figure 5, on axletree of rear wheel 35 and trailing wheel 40 that side is supported by axletree of rear wheel 35 a left side Side is provided with belt buncher 31 and the grade Poewr transmission mechanism of reducing gear 33, and right side is provided with exhaust silencer 71.

Radiator 65 is provided with the right side of the right crank box 22R of internal combustion engine 21, its outer side covers has radiator cover 66, row Tracheae 70 rearward extends (reference picture 2) in lower edge of the lower section of radiator 65 along radiator cover 66.

As shown in fig. 6, being arranged in the exhaust silencer 71 on the right side of trailing wheel 40, muffler shell 72 is formed as shell knot Structure, by the side of trailing wheel 40 (left side) inner side half-shell 73 and with both outside half-shells 74 of the opposite side of trailing wheel 40 (right side) structure Into, this two both be combined, between formed with cavity.

The inner side perisporium 73b of inner side half-shell 73 extends to the right from substantially vertical madial wall 73a neighboring, so as to The deformation that inner side half-shell 73 is formed as side opening to the right is bowl-shape, and the outer perimeter wall 74b of outside half-shell 74 is from substantially vertical outside Wall 74a neighboring extends to the left, so that the deformation that outside half-shell 74 is formed as side opening to the left is bowl-shape, inner side half-shell 73 Inner side perisporium 73b and outside half-shell 74 outer perimeter wall 74b opening shape it is roughly the same, make the open end weight of both Conjunction is welded, and inner side half-shell 73 and outside half-shell 74 is integrated, so as to form muffler shell 72.

Length is longer in the longitudinal direction for muffler shell 72, compared with the width (left and right width) on overall width direction up and down Width on direction is larger, and it is in shape (reference picture 9) flat on overall width direction.

The major part in addition to front portion of muffler shell 72 is in the rectangular drum like that extends in the longitudinal direction, its perpendicular to The section shape (reference picture 9) of fore-and-aft direction is vertical deformation rectangle, muffler shell 72 it is anterior from the rectangular cylinder Lower edge of the position along the rectangular drum like portion below the deviation in shape portion extends forwards, and top is thinner more forwards.

Closed by rear side vertical wall the rear end in the rectangular drum like portion.

Reference picture 2 and Fig. 8, formed with multiple recesses of growing crosswise on the lateral wall 74a of the outside half-shell 74 of muffler shell 72 74ad, by forming the plurality of recess 74ad that grows crosswise, the rigidity of outside half-shell 74 is improved, the wherein recess 74ad that grows crosswise is inside Side (left side) is recessed, and longer in the longitudinal direction.

As shown in figure 8, the inside of muffler shell 72 as described above is by the partition wall of general vertical, i.e. the 1st partition wall The divider wall parts 76 of portion 75 and the 2nd are divided into 3 spaces in the longitudinal direction, and central space is the 1st expanding chamber 77, the space of rear side For the 2nd expanding chamber 78, the space of front side is the 3rd expanding chamber 79.

1st divider wall parts 75 and the 2nd divider wall parts 76 are welded to muffler shell by curved tabs 75a, 76a on its periphery On 72 inner surface.

Aperture in the 1st divider wall parts 75 of muffler shell 72 and the position of the 2nd divider wall parts 76 is used for welding Hole (reference picture 7).

As shown in Fig. 2 and Fig. 8, due to the 1st divider wall parts 75 and the 2nd divider wall parts 76 and positioned at the outer of muffler shell 72 The tabular surface grown crosswise described in 2 on fore-and-aft direction on the lateral wall 74a of side half-shell 74 between recess 74ad mutually welds, so Welding is easier.

1st expanding chamber 77 and the 2nd expanding chamber 78 form dual structure, i.e., the inner side of muffler shell 72 are provided with inwall 80.In addition, the part between muffler shell 72 and inwall 80 is clamped with mineral wool 88 (reference picture 5).

As shown in figure 8, it is configured with catalyst converter 90 in the 3rd expanding chamber 79 in the front of muffler shell 72.

In catalyst converter 90, catalyst carrier 91 is surrounded by cylinder 92, and circular cone is welded with the front opening of cylinder 92 The upstream side connecting tube 93 of tubulose, the upstream side connecting tube 93 is thinner closer to front, is welded in the open rearward end of cylinder 92 There is the downstream connecting tube 94 of tapered tube shape, the downstream connecting tube 94 is thinner closer to rear.

Reference picture 8, the circular hole that the rearward end of cylinder 92 is formed with the bottom of the 1st divider wall parts 75 with front side are mutually chimeric Mode be supported by, upstream side connecting tube 93 is tapered tube shape, and it is connected with the front of cylinder 92, upstream side connecting tube 93 The thinner tip portion of the embedded front end of muffler shell 72, and protrude forwards, it is supported by a welding manner, thus, Catalyst converter 90 is configured in the lower front inside muffler shell 72.

Catalyst converter 90 is located substantially in the 3rd expanding chamber 79.

The upstream side connecting tube 93 protruded forwards from muffler shell 72 and the blast pipe extended from cylinder head 24 70 connections, are connected with the rear of catalyst converter 90 and are located at the downstream connecting tube 94 of the 1st expanding chamber 77 and the 1st communicating pipe 81 connected Connect, the 1st communicating pipe 81 passed through the 2nd divider wall parts 76 of rear side, after being bent in the 2nd expanding chamber 78 in U-shaped, again passed through 2nd divider wall parts 76, hold downstream in the inner opening of the 1st expanding chamber 77.

The 2nd shorter communicating pipe 82 through the 2nd divider wall parts 76 connects the 1st expanding chamber 77 and the 2nd expanding chamber 78, passes through 2nd divider wall parts 76 connect the 2nd expanding chamber 78 and the 3rd expanding chamber 79 with the 3rd communicating pipe 83 of the 1st divider wall parts 75.

Moreover, run through silencer through the 1st divider wall parts 75 and the blast pipe 84t of the 2nd divider wall parts 76 and its rear end 4th communicating pipe 84 of the vertical wall of rear side of shell 72 connects the 3rd expanding chamber 79 and outside.

So catalyst converter 90 in the muffler shell 72 that the exhaust gas for flowing through blast pipe 70 passes through exhaust silencer 71 After being purified, by sequentially entering the 1st, the 2nd, the 3rd communicating pipe 81,82,83 the 1st, the 2nd, the 3rd expanding chamber 77,78,79, Every time by expanding chamber, all make the pressure wave of expansion scattered and realize noise reduction, outside is finally discharged to by the 4th communicating pipe 84.

It has been provided projectingly on the lateral wall 74a of outside half-shell 74 on exhaust silencer 71 outer surface in fore-and-aft direction On longer protective cover bearing support 85, protective cover 86 is fixed on the protective cover bearing support 85 by 2 screws 87, so as to the protection Cover 86 is installed on the protective cover bearing support 85, and exhaust silencer 71 (1~Fig. 4 of reference picture) is covered from side.

Protective cover 86 substantially covers the whole side of exhaust silencer 71, meanwhile, it covers the front and rear of exhaust silencer 71 Substantially half on the outside of surface and upper surface, reduce due to exhaust silencer 71 generates heat and to caused by passenger and after-frame shadow Ring.

As shown in Fig. 1 and Fig. 4, extended through on the antetheca and rear wall of protective cover 86 be provided with erect length heat emission hole 86i, 86j, two heat emission hole 86i, 86j are located at the first half of protective cover 86.

So in the process of moving, traveling wind enters the inner side of protective cover 86, then edge exhaust from the heat emission hole 86i of antetheca Silencer 71 flows, and is finally discharged from the heat emission hole 86j of rear wall, thereby, it is possible to improve the cooling of exhaust silencer 71, even if In the dead ship condition of no traveling wind, also can promote to dissipate by heat emission hole 86i, the 86j for the first half for being located at protective cover 86 Heat.

Thus, when the area of protective cover is larger, also can effectively be radiated.

In order to cover the side of the larger exhaust silencer 71 of upper and lower width, protective cover 86 itself has the larger side of area Face, therefore can use in the side paster patch of protective cover 86 or japanning etc., to show logo or advertisement.

Reference picture 5, Fig. 6 and Fig. 7, the inner side of the inner side half-shell 73 opposite with trailing wheel wheel 41 on exhaust silencer 71 Formed with the 1st trailing wheel movement with recess 73P the position of dark scatterplot pattern (in Fig. 6,7 add) on wall 73a, wherein, the 1st trailing wheel It is mobile to be recessed with recess 73P at the position facing with axletree of rear wheel 35 to the right on overall width direction, moved in the 1st trailing wheel (light scatterplot pattern is added in Fig. 6,7 formed with the 2nd trailing wheel movement recess 73Q being recessed to the right with around recess 73P Position).

It is central attached with recess 73Q in the 2nd trailing wheel movement that the inner side of the inner side half-shell 73 to exhaust silencer 71 is recessed Closely, formed with the 1st trailing wheel movement recess 73P, the 1st trailing wheel movement with recess 73P than the 2nd trailing wheel movement recess more to The inner side depression of the inner side half-shell 73 of exhaust silencer 71.

For exhaust silencer 71, axis (central axis) C of axletree of rear wheel 35 is located at the 1st in the longitudinal direction The position on rear side of the deviation of the 2nd divider wall parts 76 of the 1st expanding chamber 77 between the divider wall parts 76 of divider wall parts 75 and the 2nd (reference picture 5,7), axis (central axis) C of axletree of rear wheel 35 is in the vertical direction positioned at the position (reference picture of deviation downside 7)。

As shown in fig. 7, the 1st trailing wheel movement recess 73P generally circular expansion centered on axis C, sees from side When examining the 1st trailing wheel movement recess 73P, it accounts for the major part at the rear side position of the 1st expanding chamber 77, after one part reaches In 2nd expanding chamber 78 of side.

When the 2nd trailing wheel movement is with recess 73Q from side, it is located at the madial wall 73a of inner side half-shell 73 the 1st separation The rear of wall portion 75, it is moved from front direction of the 1st trailing wheel movement of the 1st expanding chamber 77 with recess 73P around the 1st trailing wheel With recess 73P rear, surround the movement of the 1st trailing wheel and use recess 73P, and the 2nd trailing wheel movement accounts for the 2nd expanding chamber with recess 73Q 78 major part.

Therefore, the catalyst converter 90 being arranged in the 3rd expanding chamber 79 in exhaust silencer 71 is located at the 1st trailing wheel and moved with recessed In front of portion 73P, also, positioned at the movement of the 2nd trailing wheel with front of recess 73Q.

The silencer bearing support 100 that the exhaust silencer 71 is soldered on the exhaust silencer 71 is supported on internal combustion engine 21 Crank box 22 on.

Silencer bearing support 100 is in clam shell feature (reference picture 6) flat on overall width direction, by respectively as left side Divide both left half of the bearing support 100L and right half of bearing support 100R with right part compositions, both is combined, Formed with cavity between both.

As shown in FIG. 6 and 7, silencer bearing support 100 is extended for 100C points forwards by bearing support central portion for upper and lower 2 strands Out, this 2 strands are respectively upside installation arm 101 and downside installation arm 102, also, it is 3 to be divided by bearing support central portion 100C Stock rearward extends out, and this 3 strands are that arm 103 is welded in upside, arm 104 is welded in downside and middle welding arm 105, rear side Upside welding arm 103 and the welding arm 104 of downside arm 101 and downside are installed relative to the upside of front side arm are installed 102 offset to the outside (right side) on overall width direction, connect both bearing support central portion 100C in the lateral direction Left side, the inner side i.e. on overall width direction tilt.

Mounting hole 101h, 102h are set through the leading section of the upside of front side installation arm 101 and downside installation arm 102 Put.

The upside welding arm 103 and downside welding arm 104 of rear side rearward extend longer size, each at its In rearward end, 2 welding piece 103a and 2 welding piece 104a expansion extensions to the left and right respectively.

The welding that the part that welding arm 105 is half of the bearing support 100L in a left side among rear side is extended backward shortlyer Piece, offset of its offset to the right not as upside welding arm 103 and downside welding arm 104 to the right are big.

Reference picture 6, upside welding arm 103 and downside welding arm on the upper-lower position by rearward longer extended Portion 104, from clamping up and down, makes silencer bearing support 100 from the front of exhaust silencer 71 and exhaust to exhaust silencer 71 After silencer 71 is chimeric, 2 welding piece 103a of upside welding arm 103 and 2 welding piece 104a of downside welding arm 104 It is connected across respectively on the inner side perisporium 73b of the inner side half-shell 73 of muffler shell 72 and the outer perimeter wall 74b of outside half-shell 74, in Between weld arm 105 welding piece abutted against from inner side (left side) and the madial wall 73a of inner side half-shell 73, therefore, by each weldering Contact pin and each abutting part of muffler shell 72 are mutually welded, and silencer bearing support 100 is integrally installed to exhaust silencer 71 Front portion.

In silencer bearing support 100, due to rear side upside weld arm 103 and downside welding arm 104 relative to The upside installation arm 101 of front side and downside are installed arm 102 and offset to the outside (right side) on overall width direction, therefore, after The upside welding arm 103 and downside welding arm of side clamp exhaust silencer 71 anterior mode about 104 is welded The front portion of exhaust silencer 71 afterwards is located at the bearing support central portion 100C inclined in the lateral direction of silencer bearing support 100 Right side (reference picture 6), be inclined to the lower section of exhaust silencer 71 and more extend thinner part to top to support along silencer The right side of arm 102 is installed and positioned (reference picture 7) in the downside of the front side of frame 100.

Reference picture 7,2 welding piece 104a of the downside welding arm 104 of silencer bearing support 100 are welded on outside silencer On the outer surface of the curved tabs 75a for being welded with the 1st divider wall parts 75 of shell 72 installation position.

So it is welded on by the way that the downside of silencer bearing support 100 is welded into arm 104 because the 1st divider wall parts 75 are and firm Spend on the outer surface of the installation position of the muffler shell 72 improved, make the noise elimination being made up of inner side half-shell 73 and outside half-shell 74 The rigidity increase of device shell 72, also, exhaust silencer 71 is also securely supported on the crank box 22 of internal combustion engine 21.

In addition, as shown in fig. 7, the 1st divider wall parts 75 are configured at the 1st trailing wheel movement recess 73P of muffler shell 72 Front, 2 welding piece 103a of the upside welding arm 103 of silencer bearing support 100 are located at being welded with for muffler shell 72 The rear of the curved tabs 75a of 1st divider wall parts 75 installation position, and after it is welded on the ratio the 1st of muffler shell 72 Wheel is mobile to use recess 73P on the outer surface at the position in front.

The ratio that the middle welding arm 105 of silencer bearing support 100 is welded on muffler shell 72 is welded with the 1st separation The curved tabs 75a of wall portion 75 installation position is on the outer surface at the position in front.

Therefore, by being located at 1st divider wall parts 75 of the 1st trailing wheel movement in front of recess 73P in muffler shell 72 Position and its front and back position on weld the downside welding arm 104 of silencer bearing support 100, middle welding arm 105 and on Arm 103 is welded in side, can avoid the 1st trailing wheel movement recess 73P and silencer bearing support 100 interference, improves recess shape The free degree of shape, further, it is possible to make exhaust silencer 71 be securely supported on the crank box 22 of internal combustion engine 21.

Thus, as shown in Fig. 2 the silencer bearing support 100 for being welded on the anterior of exhaust silencer 71 and integrally installing In, the upside that extends forwards installation arm 101 and downside installation arm 102 be through its leading section mounting hole 101h, 102h installation bolt 106,107 is fixed on the crank box 22 of internal combustion engine 21, so as to which exhaust silencer 71 passes through silencer branch Bolster 100 is installed on crank box 22, and is installed in the right side of trailing wheel 40.

Exhaust silencer 71 after being mounted like this is shaped as, and the width on above-below direction is than wide on overall width direction Degree is big, as shown in Fig. 2 from side during vehicle, exhaust silencer 71 is located at the position for covering axletree of rear wheel 35 completely, and And compared with the upper end of the wheel rim 44 of trailing wheel 40, the upper end-face edge of exhaust silencer 71 is located at lower position.

So, as shown in Figure 6,7, exhaust silencer 71 is configured, makes the close trailing wheel one in exhaust silencer 71 On the madial wall 73a of side, the 1st trailing wheel movement that is recessed to the side opposite with rear wheel-side and is formed recess 73P be located at it is rear Take turns the facing position of axletree 35.

As shown in fig. 7, the 1st trailing wheel movement that the axis C of axletree of rear wheel 35 is located at rounded depression uses recess 73P substantially Center.

As shown in Figure 10, due to the 1st trailing wheel movement recess 73P and the 2nd trailing wheel movement recess 73Q, exhaust silencer The madial wall 73a of 71 close trailing wheel side is recessed to the side opposite with rear wheel-side, and the exhaust silencer 71 is with positioned at depression On the basis of axis C of maximum the 1st trailing wheel movement of degree with the axletree of rear wheel 35 of recess 73P approximate centre position, and before it Side part is compared to the maximum projecting position Pf of the rear wheel-side on overall width direction, rear side part to after on overall width direction Take turns side maximum projecting position Pr apart from trailing wheel 40 farther out.

That is, on the basis of axis C, in the space of the rear wheel-side (left side) of exhaust silencer 71, rear side is looser than front side.

As shown in fig. 7, catalysis of the configuration in the 3rd expanding chamber 79 in the front of the muffler shell 72 of exhaust silencer 71 Device 90 is located at the 1st trailing wheel movement recess 73P front, and its also be located at around the 1st trailing wheel movement recess 73P the 2nd Trailing wheel movement recess 73Q front.

In addition, reference picture 7, if setting includes the axis C of axletree of rear wheel 35 imaginary horizontal plane H, catalyst converter 90 by with Put in the position than imaginary horizontal plane H deviation lower sides.

Also, as shown in fig. 7, the inclined posture setting in highland, most of position of catalyst converter 90 after low before catalyst converter 90 In imaginary horizontal plane H downside, a part for its upper back is located at imaginary horizontal plane H height and position, and thus, catalyst converter 90 is got over The lower position of imaginary horizontal plane is located to front side.

In addition, it is welded with connecting bracket 108 in the rear portion lower end of the muffler shell 72 of exhaust silencer 71.

As shown in Fig. 2 the roughly upper half of the tire 45 of trailing wheel 40 is covered by rear mudguard 110.

Rear mudguard 110 is in semicircular ring shape, and its circle bigger than the profile of the tire 45 of trailing wheel 40, is that section is u-shaped Toroidal top half, it covers the top of trailing wheel 40 and front and back.

Reference picture 4, mounting bracket 110a are anterior from the left side of the arc-shaped perisporium of the u-shaped rear mudguard 110 of section Extend out to the left.

In addition, mounting bracket 110b is from the left side posterior end portion of the arc-shaped perisporium of the u-shaped rear mudguard 110 of section Protrude forwards, mounting bracket 110c is formed at the right side posterior end portion of the arc-shaped perisporium of rear mudguard 110.

The anterior mounting bracket 110a in the left side of rear mudguard 110 is installed to by installation bolt 111 is arranged on left song On the mounting protrusion portion 63a of the air cleaner 63 of handle case (driving section casing) 22L upside (reference picture 3), from rear mudguard The mounting bracket 110b that the posterior end of 110 left side wall protrudes forwards is installed to from left crank box by installation bolt 112 On the supporting support 22Lb that (driving section casing) 22L rear portion further rearward protrudes (reference picture 5).

In addition, exhaust silencer 71 is configured in the right side of trailing wheel 40, in the muffler shell 72 of the exhaust silencer 71 Rear portion lower end be welded with connecting bracket 108, the front end of connection stay 115 is mounted bolt 109 and is fixed to connecting bracket 108 On, the connection stay 115 is rearward provided projectingly (reference picture 2).

Mounting bracket 110c positioned at the posterior end of the right side wall of rear mudguard 110 is installed to by installation bolt 113 The rearward end of stay 115 is connected, wherein, connection stay 115 protrudes from the connecting bracket 108 of the rear portion lower end of muffler shell 72 Set.

Therefore, the anterior mounting bracket 110a in the left side of rear mudguard 110 is installed on air cleaner 63, its left side The mounting bracket 110b of the posterior end of wall is installed on left crank box (driving section casing) 22L, the posterior end of its right side wall Mounting bracket 110c is installed on exhaust silencer 71 by connecting stay 115, and thus, rear mudguard 110 is by power unit 20 supportings.

2~Fig. 4 of reference picture, supporting support 110d from the right side front upper part of the arc-shaped perisporium on rear mudguard 110 to the right It is prominent to be formed, also, support support 110e from the right side central upper positioned at the supporting support 110d rears of circular arc shaped perisporium to Right prominent formation.

In addition, the left and right directions of bearing support central portion 100C to the silencer bearing support 100 of supporting exhaust silencer 71 inclines Tiltedly, the liquid reserve tank fulcrum bearing 120 (reference picture 2) erect and set is welded with bearing support central portion 100C.

Liquid reserve tank fulcrum bearing 120 is substantially made up of such as lower part：Column sections 120a, its underpart are welded to silencer bearing support On 100, and protrude upward；Horizontal base 120b, its exceptionally straight upper end for being arranged on column sections 120a；Mounting bracket portion 120c, It is bent to form upward from horizontal base 120b lateral edges.

The mounting bracket portion 120c of liquid reserve tank fulcrum bearing 120 is from left side and rear mudguard 110 positioned at arc-shaped perisporium The supporting support 110d of right side front upper part is abutted, and is mounted bolt 121 and is fixed on supporting support 110d (reference picture 2).

Thus, liquid reserve tank fulcrum bearing 120 is soldered on silencer bearing support 100, and is installed to rear mudguard 110 Above supported, liquid reserve tank 130 is supported in the liquid reserve tank fulcrum bearing 120.

As shown in Fig. 2 liquid reserve tank 130 is following container：Liquid reserve tank first half 130a is in longer in the longitudinal direction Cuboid, liquid reserve tank first half 130a back lower bloats to form liquid reserve tank lower half 130b downwards, from liquid reserve tank Protrusion forms feed water inlet 130c upward at half portion 130a rear portion, and feed water inlet 130c is switched with cap 134.

The scale portion 131 for checking water is provided with the rear portion of the right side wall of liquid reserve tank 130.

Liquid reserve tank first half 130a anterior placing is in the horizontal base 120b of liquid reserve tank fulcrum bearing 120 top, from storage The pivot 132 that liquid case first half 130a anterior bottom wall is provided projectingly downwards inserts horizontal base 120b bearing portion (reference Fig. 2), liquid reserve tank 130 is supported by horizontal base 120b, and it can be left centered on the pivot 132 for being pointed generally in vertical direction Right swing.

Mounting bracket 133 rearward protrudes from the liquid reserve tank first half 130a of liquid reserve tank 130 rear wall, the mounting bracket 133 rearward end is installed to the supporting support 110e of the right side central upper of above-mentioned rear mudguard 110 by installation bolt 135 On, thus, liquid reserve tank 130 is fixed.

The connecting tube protruded forwards from the liquid reserve tank lower half 130b of liquid reserve tank 130 is connected with liquid supplementation pipe 136, the fluid infusion Pipe 136 is connected with the upper box of radiator 65.

In addition, it is connected from the feed water inlet 130c of liquid reserve tank 130 connecting tubes protruded forwards with breather pipe 137.

Liquid reserve tank cover 140 covers the liquid reserve tank 130 from right side.

Liquid reserve tank cover 140 is mounted the supporting support that bolt 135 is fixed on rear mudguard 110 together with liquid reserve tank 130 On 110e.

In addition, on liquid reserve tank cover 140, perpendicular length is formed in part with corresponding with the scale portion 131 on liquid reserve tank 130 Elongated hole, can be from the surplus (water level) of the standby cooling water in visual examination liquid reserve tank 130 by the elongated hole.

As described above, in this pedal two-wheeled motor vehicle 1, power unit 20 is in a manner of it can swing by body shell branch Hold, being extended at the rear of power unit 20 has belt buncher, the deceleration at the rear portion of the belt buncher Axletree of rear wheel 35 is provided projectingly in mechanism 33 to the right, the side of the supporting wheels 40 of axletree of rear wheel 35, after trailing wheel 40 Side is provided with the internal exhaust silencer 71 with catalyst converter 90, thus, in this pedal two-wheeled motor vehicle 1, it is not necessary to the row of pulling down Gas silencer 71 just can carry out replacement operation to trailing wheel 40.

Below, the flow chart that trailing wheel 40 is pulled down is illustrated based on Fig. 5 and Figure 10~12.

In order to pull down trailing wheel 40 it may first have to pull down rear mudguard 110.

By pulling down installation bolt 111, to make outside the left side of rear mudguard 110 anterior mounting bracket 110a and silencer Shell 72 separates, by pulling down installation bolt 112, to make the mounting bracket of the posterior end of the left side wall positioned at rear mudguard 110 110b separates with left crank box (driving section casing) 22L, by pulling down installation bolt 113, to make positioned at the right side of rear mudguard 110 The mounting bracket 110c of the posterior end of side wall separates with the connection stay 115 being fixed on exhaust silencer 71.

Also, by pulling down installation bolt 121, to make the right front of the arc-shaped perisporium positioned at rear mudguard 110 Supporting support 110d separates with the mounting bracket portion 120c of liquid reserve tank fulcrum bearing 120, by pulling down installation bolt 135, after making The supporting support 110e of the right side central upper of mud guard 110 separates with the mounting bracket 133 of liquid reserve tank 130.

By pulling down the installation bolt 111,112,113,121,135 at above-mentioned 5 positions, can by rear mudguard 110 from Removed on vehicle body.

Further, since the connection stay 115 in the connecting bracket 108 of exhaust silencer 71 can also be taken turns after exchange Obstruction is produced when 40, therefore is preferably pulled down.

It is provided with rear mudguard 110 in the state of connection stay 115, will be connected by pulling down installation bolt 113 Stay 115 is pulled down from exhaust silencer 71, can together pull down rear mudguard 110 and connection stay 115.

In addition, reference picture 4, is pulled down liquid reserve tank cover 140 by pulling down installation bolt 135, so as to configure in silencer branch The liquid reserve tank 130 of the top of bolster 100 can be exposed to outside, wherein, silencer bearing support 100 supports exhaust silencer 71.

It will expose in this under state, and front portion is perpendicular to be pointed generally in by the liquid reserve tank 130 that liquid reserve tank fulcrum bearing 120 supports Nogata to pivot 132 centered on swing to the right, thereby, it is possible to being inclined upwardly in right and left in silencer fulcrum bearing 100 Fulcrum bearing central portion 100C top, it is parallel to fulcrum bearing central portion 100C (two point to be used in Fig. 4 to tilt liquid reserve tank 130 Line represents), so as to form the space of trailing wheel movement in fulcrum bearing central portion 100C top of retreading.

It is of course also possible in order to easily carry out the water supply operation to liquid reserve tank 130, and make to move liquid reserve tank 130 and swing So as to mobile.

So, in the state of rear mudguard 110 and connection stay 115 is pulled down, liquid reserve tank 130 is swung to right side, with On the basis of the axis C of axletree of rear wheel 35, the rear side to the rear wheel-side on overall width direction compared with the front side of exhaust silencer 71 Maximum projecting position apart from trailing wheel 40 farther out (reference picture 10), therefore from spatially more relaxed rear side by trailing wheel 40 from vehicle body Pull down at rear.

When trailing wheel 40 is pulled down from vehicle body rear, because using positioned at the inner side of the close trailing wheel side of exhaust silencer 71 The 1st trailing wheel movement on wall 73a uses recess 73Q with recess 73P and the movement of the 2nd trailing wheel, so it is same trailing wheel 40 is tilted Shi Yidong trailing wheels 40, the central shaft of trailing wheel 40 is set always to be located substantially at the imaginary horizontal plane H of the axis C comprising axletree of rear wheel 35 On, so as to which trailing wheel 40 be pulled down from vehicle body rear, wherein, the axis C of axletree of rear wheel 35 is located at the 1st trailing wheel shifting of rounded depression Employ on recess 73P approximate centre position.

First, unscrew the nut 37 being fixed to trailing wheel 40 on axletree of rear wheel 35, remove nut 37 and packing ring 36, make trailing wheel 40 move in parallel to the right side on overall width direction, so as to remove the bearing of the hub for vehicle wheel 42 of trailing wheel 40 circle from axletree of rear wheel 35 Cylinder portion 42a (reference picture 5, Figure 10).

Silencer bearing support 100 is encountered in reference picture 10, the front portion of tire 45, and moving in parallel for trailing wheel 40 is limited, still, As shown in Figure 10, when silencer bearing support 100 is encountered in the front portion of tire 45, due to the bearing cylindrical portion 42a of hub for vehicle wheel 42 The external screw thread 35s after the undergauge of the left part of axletree of rear wheel 35 is reached, therefore trailing wheel 40 can be made from perpendicular to axletree of rear wheel 35 axis C posture right bank to the left.

Therefore, the rear side of trailing wheel 40 is moved to the right relative to front side, make trailing wheel 40 right-oblique to the left while to oblique Right back is moved, thereby, it is possible to pull down the bearing cylindrical portion 42a of hub for vehicle wheel 42 from axletree of rear wheel 35, if continuing to make trailing wheel 40 move to oblique right back, then the front portion of trailing wheel 40 is by the inclined bearing support of left and right directions to silencer bearing support 100 Between centre portion 100C and the brake-shoe 52 of drum brake 50, position shown in solid in Figure 11 is moved to.

Now, trailing wheel is formd in bearing support central portion 100C top of retreading because liquid reserve tank 130 is rocked to right Mobile space, therefore, the forward upper of trailing wheel 40 will not be by the interference of liquid reserve tank 130.

As shown in the double dot dash line in Figure 11, the wheel rim 44 of trailing wheel 40 is centered on the position of neighbouring brake-shoe 52, rear After rearward being moved while the rear side of wheel 40 rotates to the left, the preceding right side of tire 45 enters moves with recessed than the 1st trailing wheel Portion 73P close to front the 2nd trailing wheel movement with recess 73Q, wheel rim 44 is moved to rear around brake-shoe 52.

So, continuing, which makes trailing wheel 40 show the posture greatly, rearward moves, and the preceding left side of tire 45 is close to trailing wheel car The position of axle 35, the preceding right side of tire 45 is the position facing with the 1st trailing wheel movement recess 73P, after making Wheel 40 moves to the right, and the solid line in Figure 12 represents somewhat move trailing wheel 40 to the right, enter the preceding right side of tire 45 State of the 1st trailing wheel movement after recess 73P.

Afterwards, make the preceding left side of tire 45 from the right-hand member of axletree of rear wheel 35 around its rear, also, before making tire 45 Right side is moved along the 1st trailing wheel and rearward rotated with recess 73P curved concave, as shown in the imaginary line in Figure 12, by trailing wheel 40 are moved to after rear, and the front portion of tire 45 is located at the rear portion of brake-shoe 52 and the movement of the trailing wheels of Bi 1 uses recess 73P after The 2nd trailing wheel movement of side is used on the position between recess 73Q.

Afterwards, make the preceding right side of trailing wheel 45 move along the 2nd trailing wheel rearward to be rotated with recess 73Q curved concave, from And trailing wheel 40 is rearward moved, trailing wheel 40 can be pulled down from vehicle body.

As described above, in this pedal two-wheeled motor vehicle 1, it is not necessary to which pulling down exhaust silencer 71 just can be by trailing wheel 40 from car Pull down with it.

By the operation order opposite with the operation order for pulling down trailing wheel, trailing wheel 40 can be installed on vehicle body, Thus, it is not necessary to pulling down exhaust silencer 71 just can efficiently carry out the replacement operation of trailing wheel 40.

Because the exhaust apparatus of the pedal two-wheeled motor vehicle 1 of present embodiment is said structure, thus its have it is following Action effect.

As shown in fig. 7, moved because the catalyst converter 90 inside exhaust silencer 71 is configured in than the 1st trailing wheel with recessed Portion 73P is also configured in the position also close to front than the 2nd trailing wheel movement recess 73Q close to the position in front, thus it is possible to Enough make to be formed on the madial wall 73a of exhaust silencer 71 the 1st, the 2nd trailing wheel movement avoids being catalyzed with recess 73P, 73Q The interference of device 90, it is ensured that the free degree of recess shapes, wherein, the movement of the 1st trailing wheel is located at the interior of exhaust silencer 71 with recess 73P The position facing with axletree of rear wheel 35 on side wall 73a, the 2nd trailing wheel movement are located at the 1st trailing wheel movement recess with recess 73Q Around 73P.

So the exhaust apparatus of the pedal two-wheeled motor vehicle 1 using present embodiment, is able to easily form necessary big Small, necessary depth the 1st, the movement of the 2nd trailing wheel use recess 73P, 73Q, to suppress exhaust silencer 71 on overall width direction Outside bloats or stretched out, also, need not pull down the exchanging operation that exhaust silencer 71 just can be pulled down and installed to trailing wheel.

As shown in Figure 10~12, by the 1st as formation, the 2nd trailing wheel movement recess 73P, 73Q, be able to maintain that car Good aesthetic appearance, avoids vehicle body from maximizing, further, it is possible to need not pull down exhaust silencer 71 and simply enter to trailing wheel 40 Row exchanging operation.

Further, since catalyst converter 90 is not disposed on the rear side in exhaust silencer 71, therefore, it is possible to make exhaust silencer The width on overall width direction of 71 rear side is smaller, moreover, can ensure larger to be used to pull down trailing wheel 40 in rear side Space, the operation at vehicle body rear is pulled down or is installed to so as to easily enter to be about to trailing wheel 40 from vehicle body rear.

As shown in Figure 10, using the 1st maximum trailing wheel movement recess of sinking degree on the madial wall 73a as rear wheel-side On the basis of the axis C of the axletree of rear wheel 35 at 73P center, with the front part of exhaust silencer 71 to after on overall width direction The maximum projecting position Pf of wheel side is compared, and the maximum to the rear wheel-side on overall width direction of the rear section of exhaust silencer 71 is stretched Out position Pr apart from trailing wheel 40 farther out.

That is, in the space of the rear wheel-side (left side) in exhaust silencer 71, on the basis of axis C, rear side is more wider than front side Pine, therefore, it is not necessary to pull down exhaust silencer 71, trailing wheel 40 just can be moved to spatially more relaxed rear, so as to hold Change places and pull down trailing wheel 40, or trailing wheel 40 is easily installed from rear.

Reference picture 9, because exhaust silencer 71 is formed as width on above-below direction than the width (left and right on overall width direction Width) greatly, therefore, while by the capacity that ensures exhaust silencer, make exhaust silencer 71 close to the inner side of trailing wheel side Wall 73a is close to lateral wall, so as to reduce its width on overall width direction, makes it be flat shape on overall width direction, energy Enough maintain good aesthetic appearance, additionally it is possible to easily ensure to supply trailing wheel 40 between the exhaust silencer 71 of trailing wheel 40 and its side The space that can be passed through.

In addition, as shown in Fig. 2 be configured to due to exhaust silencer 71, from side during vehicle, it is by axletree of rear wheel 35 cover completely, and catalyst converter 90 is configured in deviation lower side relative to the imaginary horizontal plane H of the axis C including axletree of rear wheel 35 Position, be located at relatively low height therefore, it is possible to make to include the center of gravity of the exhaust silencer 71 of heavier catalyst converter 90, realization is stepped on The good operational stability of board-like two-wheeled motor vehicle 1.

When trailing wheel 40 is pulled down from vehicle body rear, it is necessary to ensure that the imaginary horizontal plane H of the axis C including axletree of rear wheel 35 and The space for being used to pull down trailing wheel 40 near it, is inclined to because larger catalyst converter 90 is configured in relative to imaginary horizontal plane H The position of lower side, therefore the space for pulling down trailing wheel 40 can be readily insured that.

As shown in fig. 7, due to being configured in urging for deviation lower section side position relative to the imaginary horizontal plane H including axis C The front portion for changing device 90 is set than its rear portion away from imaginary horizontal plane H, its rear inclined posture in highland low in the past, therefore, catalysis Device 90 closer to front side more from imaginary horizontal plane H close to lower section, after can be formed in when making trailing wheel right bank being dismantled to the left The front portion of wheel will not interfere with the structure of catalyst converter 90, so as to make the dismounting of trailing wheel 40 further easy.

As shown in Fig. 2 lower setting exhaust silencer 71, the upper end-face edge of exhaust silencer 71 is set to be located at than trailing wheel 40 Wheel rim 44 upper end close to the position of lower section, thereby, it is possible to it is above exhaust silencer 71 it is readily seen that position and from The opening position that is overlapped with trailing wheel 40 when side is watched, space efficient and liquid reserve tank 130 is set, pass through the quarter of liquid reserve tank 130 Degree portion 131, can be easily from the outside liquid measure confirmed inside liquid reserve tank 130, maintenance easy to maintain.

Further, since catalyst converter 90 is arranged on the position relative to the imaginary horizontal plane H deviation lower sides including axis C Put, therefore, even if by liquid reserve tank 130 configure close to exhaust silencer 71 position, because liquid reserve tank 130 is located at exhausting silencer The top of device 71, so it is not readily susceptible to the influence of the heating of catalyst converter 90.

On the madial wall 73a of the side of close trailing wheel 40 of exhaust silencer 71, recess 73P week is used in the movement of the 1st trailing wheel Enclose formed with the 2nd trailing wheel movement recess 73Q, in the 2nd trailing wheel movement recess 73Q being recessed to the inner side of exhaust silencer 71 Central portion, formed with the 1st trailing wheel movement recess 73P, it is than the 2nd trailing wheel movement with recess 73Q more to exhaust silencer 71 inner side depression, as shown in fig. 7, because catalyst converter 90 is located at than the 2nd trailing wheel movement with recess 73Q close to the position in front, Therefore, it is possible to avoid the interference of the 1st trailing wheel movement recess 73P and the 2nd trailing wheel movement recess 73Q by catalyst converter 90, really Protecting recess shapes has the larger free degree, is readily formed the 2nd trailing wheel movement recess 73Q of necessary size, necessary depth, Thus, it is possible to exhaust silencer 71 need not be pulled down and more easily carry out the dismounting operation of trailing wheel 40, also, by setting the Recess 73Q is used in the movement of 2 trailing wheels, and exhaust silencer 71 can be made to realize vehicle on overall width direction closer to the side of trailing wheel 40 Miniaturization, improve vehicle from rear when aesthetic appearance, vehicle is easier parking.

In addition, as shown in Figures 5 and 6, due on the madial wall 73a of the side of close trailing wheel 40 of exhaust silencer 71, from Peripheral part starts to inner side to be recessed and form the 2nd trailing wheel movement recess 73Q, and the 2nd trailing wheel movement recess 73Q central portion enters One step is recessed to the inner side of exhaust silencer and forms the 1st trailing wheel movement recess 73P, therefore, in the 2nd trailing wheel movement recess 73Q neighboring is formed with bending section, the boundary in the 1st trailing wheel movement with recess 73P and the 2nd trailing wheel movement recess 73Q Place is formed with bending section, by the two bending sections, can increase the madial wall 73a of exhaust silencer 71 rigidity.

As shown in fig. 7, the 1st divider wall parts 75 are located at than the 1st, the 2nd trailing wheel movement recess 73P, 73Q close to the position in front Put, because catalyst converter 90 is supported in the 1st divider wall parts 75, set therefore, it is possible to not interfere the 1st trailing wheel movement recess 73P The 1st divider wall parts 75 are put, can further ensure that the free degree of the 1st, the 2nd trailing wheel movement recess 73P, 73Q recess shapes, It is able to easily form necessary size, the 1st of necessary depth the, the 2nd trailing wheel movement recess 73P, 73Q.

In addition, catalyst converter 90 can be made to be supported securely by the 1st divider wall parts 75.

Because catalyst converter 90 is arranged in the 3rd expanding chamber 79 in the front of exhaust silencer 71, end is separated by the 1st thereafter Wall portion 75 supports, therefore, it is possible to make the 1st trailing wheel movement recess 73P relative to the 2nd trailing wheel movement recess 73Q closer to Front, so as to further assure that the free degree of the 1st, the 2nd trailing wheel movement recess 73P, 73Q recess shapes.

As shown in fig. 7, the muffler shell 72 that inner side half-shell 73 and outside half-shell 74 are combined and formed, has and eliminates the noise The exhaust silencer 71 of device shell 72 is supported by the silencer bearing support 100 being provided projectingly on internal combustion engine 21, silencer supporting The downside rearward extended the welding arm 104 of frame 100 is welded on the 1st divider wall parts 75 of being provided with of muffler shell 72 On the outer surface of installation position.

Therefore, by the way that silencer bearing support 100 is welded on due to the 1st divider wall parts 75 to increase outside the silencer of rigidity On the outer surface of the installation position for being provided with the 1st divider wall parts 75 on shell 72, inner side half-shell 73 and outside half-shell 74 are closed one The rigidity for the muffler shell 72 for rising and forming is increased, also, exhaust silencer 71 is securely supported on internal combustion engine 21 On.

As shown in fig. 7, because silencer bearing support 100 has：Arm 104 is welded in downside, and it is welded on outside silencer On the outer surface of the installation position for being provided with the 1st divider wall parts 75 on shell 72；Arm 103 is welded in upside, and it, which is welded on, disappears Ratio on sound device shell 72 is provided with the installation position of the 1st divider wall parts 75 on the outer surface at the position at rear；Centre weldering Arm 105 is connect, its ratio being welded on muffler shell 72 is provided with the installation position of the 1st divider wall parts 75 close to front On the outer surface at position, therefore, by the way that the upside of silencer bearing support 100, downside, centre are welded into arm 103,104,105 It is respectively welded on the position for being provided with the 1st divider wall parts 75 and its front and back position on muffler shell 72, exhaust can be made Silencer 71 is securely supported on internal combustion engine 21.

So, because upside welding arm 103 is welded on divider wall parts 75 of ratio the 1st on muffler shell 72 after The position of side, also, the upside is welded arm 103 and is welded on than the 1st trailing wheel movement recess 73P close to the position in front, Therefore downside, middle welding arm 104,105 are also welded on than the 1st trailing wheel movement recess 73P close to the position in front, by This, can be avoided interference of the 1st trailing wheel movement recess 73P by silencer bearing support 100, improve the freedom of its recess shapes Degree, so as to use most suitable recess shapes, it is not necessary to which pulling down exhaust silencer 71 just can be pulled down and be pacified to trailing wheel The replacement operation of dress, further, it is possible to suppress stretching of the exhaust silencer 71 to the outside on overall width direction, maintain good outward appearance Property.

Because the upside of silencer fulcrum bearing 100, downside, middle welding arm 103,104,105 are soldered to disappear respectively The upper end of sound device shell 72, bottom, the pars intermedia on above-below direction, therefore, it is possible to make exhaust silencer 71 more firm Ground is supported on internal combustion engine 21.

Exhaust silencer involved in the present invention is applied to trailing wheel and changes the more commercial pedal type vehicle of frequency.

Further, since the pedal type vehicle for being applicable exhaust apparatus involved in the present invention is configured to, it is not necessary to removes exhaust and disappears Sound device just can be changed to trailing wheel, be stretched out further, it is possible to suppress exhaust silencer to the outside on overall width direction, therefore, Even in narrower parking lot, vehicle is also easier parking.

The exhaust apparatus of the pedal type vehicle involved by embodiments of the present invention is illustrated above, but the present invention Mode be not limited to above-mentioned embodiment, the present invention main scope in, it can also use numerous embodiments.

【Description of reference numerals】

1：Pedal two-wheeled motor vehicle；20：Power unit；21：Internal combustion engine；22：Crank box；23：Cylinder block；24：Cylinder Lid；27：Decelerator shell；31：Belt buncher；33：Reducing gear；35：Axletree of rear wheel；36：Packing ring；37：Nut； 40：Trailing wheel；41：Trailing wheel wheel；42：Hub for vehicle wheel；43：Spoke portion；44：Wheel rim；45：Tire；50：Drum brake；52：System Dynamic hoof；63：Air cleaner；70：Blast pipe；71：Exhaust silencer；72：Muffler shell；73：Inner side half-shell；73a：Inner side Wall；73P：1st trailing wheel movement recess；73Q：2nd trailing wheel movement recess；74：Outside half-shell；74a：Lateral wall；75：1st Divider wall parts；76：2nd divider wall parts；77：1st expanding chamber；78：2nd expanding chamber；79：3rd expanding chamber；86：Protective cover；90： Catalyst converter；91：Catalyst carrier；92：Cylinder；100：Silencer bearing support；100C：Bearing support central portion；101：Pacify upside Fill arm；102：Downside is installed by arm；103：Weld arm in upside；104：Weld arm in downside；105：Centre welding arm； 110：Rear mudguard；120：Liquid reserve tank fulcrum bearing；130：Liquid reserve tank；131：Scale portion.

Claims (10)

1. a kind of exhaust apparatus of pedal type vehicle,

The axletree of rear wheel (35) at the rear portion of Poewr transmission mechanism (31,33) is arranged on from side supporting wheels (40), wherein, it is described Poewr transmission mechanism (31,33) is rearward extended by the internal combustion engine (21) of power unit (20), the power unit (20) It is supported in a manner of it can swing on body shell,

The opposite side that the Poewr transmission mechanism (31,33) of side with being arranged on the trailing wheel (40) is opposite is provided with exhaust Silencer (71), the inside of the exhaust silencer (71) are provided with catalyst converter (90),

On the madial wall (73a) of close trailing wheel (40) side of the exhaust silencer (71) with the axletree of rear wheel (35) On facing position, formed with trailing wheel movement with recess (73P),

Characterized in that,

Trailing wheel movement described in ratio of catalyst converter (90) configuration in the exhaust silencer (71) is with recess (73P) before The position of side,

On the madial wall (73a) of the close trailing wheel side of the exhaust silencer (71), in the trailing wheel movement recess Formed with the 2nd trailing wheel movement with recess (73Q) around (73P),

The trailing wheel movement recess (73P) is located at the 2nd trailing wheel being recessed to the inner side of the exhaust silencer (71) and moved Recess (73Q) central portion is employed, than the 2nd trailing wheel movement with recess (73Q) more to the interior of the exhaust silencer (71) Side is recessed and formed,

Catalyst converter (90) configuration is in the position than the 2nd trailing wheel movement with the close front of recess (73Q).

2. the exhaust apparatus of pedal type vehicle according to claim 1, it is characterised in that

On the basis of the axis (C) of axletree of rear wheel (35), with the front part of the exhaust silencer (71) on overall width direction The maximum projecting position of trailing wheel (40) side compare, the rear section of the exhaust silencer (71) is to the trailing wheel on overall width direction (40) maximum projecting position of side is farther apart from trailing wheel (40).

3. the exhaust apparatus of pedal type vehicle according to claim 1 or 2, it is characterised in that

The exhaust silencer (71) is formed as, and its width in the vertical direction is more than its width on overall width direction, and And the exhaust silencer (71) is configured to, and covers the axletree of rear wheel (35) during vehicle completely from side,

Catalyst converter (90) configuration is relative to the imaginary horizontal plane including the axis of the axletree of rear wheel (35) (C) (H) it is inclined on the position of lower side.

4. the exhaust apparatus of pedal type vehicle according to claim 3, it is characterised in that

The catalyst converter (90) is set with low early and high after inclination attitude, described to urge compared with the rear portion of the catalyst converter (90) It is farther to change imaginary horizontal plane (H) described in the front distance of device (90).

5. the exhaust apparatus of pedal type vehicle according to claim 3, it is characterised in that

The exhaust silencer (71) is configured to, and the upper end that its top edge is located at the wheel rim (44) than the trailing wheel (40) is close The position of downside,

Liquid reserve tank (130) is configured at the top of the exhaust silencer (71), and from side during vehicle, its be located at it is described The position that trailing wheel (40) overlaps.

6. the exhaust apparatus of pedal type vehicle according to claim 4, it is characterised in that

The exhaust silencer (71) is configured to, and the upper end that its top edge is located at the wheel rim (44) than the trailing wheel (40) is close The position of downside,

Liquid reserve tank (130) is configured at the top of the exhaust silencer (71), and from side during vehicle, its be located at it is described The position that trailing wheel (40) overlaps.

7. the exhaust apparatus of pedal type vehicle according to claim 1 or 2, it is characterised in that

The inside division of the exhaust silencer (71) is arranged at than the trailing wheel for the divider wall parts (75) of multiple expanding chambers The position in the close front of mobile recess (73P),

The catalyst converter (90) is supported in the divider wall parts (75).

8. the exhaust apparatus of pedal type vehicle according to claim 7, it is characterised in that

In the exhaust silencer (71), by configure the rear wheel-side on overall width direction, i.e. inner side inner side half-shell (73) with matching somebody with somebody Put the outside half-shell (74) in outside and be combined composition muffler shell (72),

The exhaust silencer (71) is supported on the internal combustion engine (21) by silencer bearing support (100),

What the silencer bearing support (100) was welded on the muffler shell (72) is provided with the divider wall parts (75) On the outer surface of installation position.

9. the exhaust apparatus of pedal type vehicle according to claim 8, it is characterised in that

The silencer bearing support (100) has：1st welding arm (104), it is welded on the muffler shell (72) It is provided with the outer surface of the installation position of the divider wall parts (75)；2nd welding arm (103), it is welded on institute The ratio for stating muffler shell (72) is provided with the installation position of the divider wall parts (75) on the outer surface at the position at rear； 3rd welding arm (105), it is welded on the installation that the ratio of the muffler shell (72) is provided with the divider wall parts (75) Position on the outer surface at the position in front,

The 2nd welding arm (103) is welded on the position than the trailing wheel movement recess (73P) close to front.

10. the exhaust apparatus of pedal type vehicle according to claim 9, it is characterised in that

Described 1st, the 2nd, the 3rd welding arm (104,103,105) of the silencer bearing support (100) is mutually dispersedly divided Any one position not being welded in the pars intermedia on the upper end, bottom, above-below direction of the muffler shell (72).