Summary of the invention
The present invention is in view of this fact, its objective is when a kind of power unit miniaturization being provided and improving the assembling performance of power unit, also improves the fuel pipe structure in the dilly of durability of fuel hose.
For achieving the above object, the present invention the 1st aspect, the speed changer used on the trailing wheel constitutes being delivered to by motor with the output variable speed of this motor, the front portion that aforementioned rear-wheel spindle is bearing in the power unit at rear portion can be bearing on the vehicle body frame with swinging up and down, on the position that the fore-and-aft direction and the aforementioned motor of this vehicle body frame are isolated, fuel tank is carried on vehicle body frame, the fuel hose of the fuel that guiding comes from the petrolift of the fuel that attracts this fuel tank is connected to the dilly on the Fuelinjection nozzle that is attached on the aforementioned motor, aforementioned petrolift is built in the aforementioned fuel tank, controlling first clamp holder that an end is connected to the intermediate portion of the aforementioned fuel hose on the aforementioned petrolift is fixed on the aforementioned vehicle body frame, between the aforementioned Fuelinjection nozzle and first clamp holder, aforementioned fuel hose disposes agley along the left and right directions of vehicle body frame.
The structure of the 1st aspect according to the present invention, because petrolift is built in the fuel tank that is equipped on the position of the fore-and-aft direction of vehicle body frame and motor isolation on the vehicle body frame, so, fuel tank is not installed on the power unit, thereby, can make the power miniaturization and improve the assembling performance of power unit.And, along with swinging up and down of power unit, first clamp holder in the fuel hose and the part between the motor are reversed, can avoid the bending deflection of fuel hose, because for reversing, the strength ratio of fuel hose is with respect to the intensity height of bending, so, can improve the durability of fuel hose.
In addition, the present invention the 2nd aspect, on the basis aspect the present invention the 1st, second clamp holder of part of controlling the close aforementioned motor of aforementioned fuel hose is fixed to the aforementioned pusher side that starts, aforementioned fuel hose disposes agley to the left and right directions of vehicle body frame between first and second clamp holders, according to this structure, utilize second clamp holder, can improve the precision of fuel hose to the curved configuration of the left and right directions of vehicle body frame, and, can prevent bending deflection at the joint place of fuel hose on Fuelinjection nozzle.
The present invention the 3rd aspect, on the basis aspect the present invention the 2nd, aforementioned first and second clamp holder is separately in the configuration of the left and right sides of the vehicle body center line that extends along fore-and-aft direction, according to this structure, in fuel hose, the length between first clamp holder and second clamp holder can be set longly, whereby, the bending load on the fuel hose can be suppressed to be added in more reliably, the durability of fuel hose can be further improved.
The present invention the 4th aspect, on the basis aspect the present invention the 3rd, aforementioned fuel hose between aforementioned first and second clamp holders, extend ground configuration to vehicle body frame in the same side of left and right directions from any clamp holder wherein, according to this structure, in fuel hose, the length setting between first and second clamp holders can be got longlyer, can further improve the durability of fuel hose.
And then, the present invention the 5th aspect, on the basis in the present invention the 1st~4 aspect any one, aforementioned fuel hose constitutes the multi-layer high-voltage type, according to this structure, increases the intensity of fuel hose, can improve the durability of fuel hose.
Embodiment
Below, based on one embodiment of the present of invention shown in the drawings form of implementation of the present invention is described.
Fig. 1~Fig. 6 is one embodiment of the present of invention, Fig. 1 is the side view of scooter, Fig. 2 be omit under the state of vehicle body cover along the direction 2 of Fig. 1 to view, Fig. 3 be Fig. 2 direction 3 to view, the enlarged view of the major component of Fig. 2 on Fig. 4, the otch side view of the part of fuel hose on Fig. 5, Fig. 6 are the diagrams that is used to illustrate along with the operating state of the swing fuel hose of power unit.
At first in Fig. 1 and Fig. 2, vehicle body frame 11 as the scooter of dilly, comprise: from can turn to the down tube 16 that extends to the rear lower side of the preceding pipe 15 of front fork of ground support shaft supports front-wheel WF, the top tube 17 of top from this down tube 16 to extend to the rear lower side than the mild angle of inclination of this down tube 16, the front end connection is arranged on the rearward end of top tube 17, when extend the back upper place, manage 18 behind the interconnective pairing left and right vehicle frame in rear end, 18, front end connects when being arranged on the underpart of aforementioned down tube 16, after being arranged on aforementioned two vehicle frames, the rearward end connection manages 18, pairing left and right vehicle frame bottom tube 19 in the middle of 18,19, vehicle frame bottom tube 19,19 when observing from the side, bends to the U font roughly of opening upward.
The front portion of the power unit P that constitutes by the stepless speed variator M that passes to trailing wheel behind motor E that cylinder-bore axis is tilted to the front upper place and the cvt output with this motor E, can be bearing on the fore-and-aft direction intermediate portion of aforementioned vehicle body frame 11 with swinging up and down, aforementioned trailing wheel WR axle is bearing in the rear portion of power unit P, and back buffer cell 20 is set between the rearward end of vehicle body frame 11 and aforementioned power unit P.
In the lump with reference to Fig. 3, manage behind aforementioned two vehicle frames 18,18 and the joint of aforementioned vehicle frame bottom tube 19,19 on, fixing respectively by upper bracket 21....On the other hand, above the crankcase 22 in motor E, be fixed with pairing left and right lower tray 23..., aforementioned two lower tray 23... are bearing in swingably on two ends are bearing in motor suspension 24 on the upper bracket 21... swingably.
Left side at trailing wheel WR, air-strainer 25 in this stepless speed variator of the top of stepless speed variator M configuration supporting M, the air that is purified by this air-strainer 25 is connected in the closure district 27 via sucking pipe 26, and this closure district 27 is that the air-breathing connecting tube 28 of U font is along being connected on the cylinder head 29 on the position of the approximate centre of the left and right directions of motor E via general curved.And, the bottom of Fuelinjection nozzle 30 is coupled to the top of air-breathing connecting tube 28, Fuelinjection nozzle 30 is remained on the retainer 31 that is fastened on the aforementioned air-breathing connecting tube 28 with the fuel passage 31a by Fuelinjection nozzle 30, and between the aforementioned air-breathing connecting tube 28.
And aforementioned motor suspension 24 is configured in the central part top of this motor 24 in order to allow sucking pipe 26 and closure district 27, and its central part constitutes recessed U word shape roughly downwards.
Wherein, fore-and-aft direction at vehicle body frame 11, with aforementioned motor E position spaced, fuel tank 32 carries on vehicle body frame 11, in the present embodiment, fuel tank 32 is bearing on two vehicle frame bottom tubes 19,19 in the mode of the front portion that is configured in the part of being surrounded by down tube 16, top tube 17 and two vehicle frame bottom tubes 19,19.That is, fuel tank 32, carries on vehicle body frame 11 on the position that forwards isolates from motor E along the fore-and-aft direction of vehicle body frame 11.
Aforementioned vehicle body frame 11, the part of power unit P and fuel tank 32, with vehicle body frame 11 together, cover by the plastic vehicle body cover 12 that constitutes vehicle body 13, this vehicle body cover 12 is by the front shroud 33 of the front portion that covers vehicle body frame 11, connect the pairing left and right leg baffle plate 34... on the both sides that are arranged on this front shroud 33, be connected respectively to the pairing left and right foot treadle 35... on the lower end of leg baffle plate 34..., the floor tunnel portion 36 of the covering fuel tank 32 that between two foot treadle 35..., swells upward, from the sagging skirt section 37... of the external side brim of aforementioned two foot treadle 35..., connect skirt section 37... downwards, foot treadle 35... and floor tunnel portion 36, and the back cover 38 that covers the rear portion of vehicle body frame 11 constitutes.
On back cover 38, after supporting aforementioned two vehicle frames, manage 18,18, the vehicle seat 39 of configuration tandem type.
In fuel tank 32, built-in filter 40 attracts petrolift 41, one ends of the fuel in the fuel tank 32 to be connected to the other end of the fuel hose 42 on this petrolift 41 via this filter 40, is connected on the aforementioned Fuelinjection nozzle 30 via aforementioned retainer 31.
In Fig. 4, first clamp holder 43 of controlling the intermediate portion of fuel hose 42 is fixed on the vehicle body frame 11, in the present embodiment, first clamp holder 43 is fastened to and manages behind the pairing left and right vehicle frame in 18,18 on the support plate 44 on the front portion of pipe 18 behind the vehicle frame that is positioned at the left side under the state in the place ahead of the direct of travel that points to motorcycle.
And, between the Fuelinjection nozzle 30 and first clamp holder 43, fuel hose 42 disposes agley to the left and right directions of vehicle body frame 11, and second clamp holder 45 of the part of the close motor E by will keeping fuel hose 42 is fastened on the supporting arm 46, is fixed to motor E side.The base end part of supporting arm 46 and aforementioned retainer 31 are fastened on the air-breathing connecting tube 28 together jointly.Aforementioned second clamp holder 45 is fastened on the front end of this supporting arm 46.
In Fig. 5, aforementioned fuel hose 42, for example, it is the multi-layer high-voltage layer that constitutes by following each layer, described each layer is: fluorine is the 42a of internal layer portion that rubber constitutes, the 452b of middle level portion that forms by nitrile butadiene rubber, cover the aforementioned internal layer 42a of portion, when constituting, cover the lattice portion 42c of aforementioned middle level 42b by polyester, the outermost outer 42d of portion that constitutes by chlormerodrin (ヒ De リ Application) rubber.One end of this fuel hose 42 is connected on the connector 47 that is connected on the fuel tank 32, and the joint of fuel hose 42 on connector 47 kept by first clip 48.In addition, the other end of fuel hose 42 joins on the retainer 31 that is connected on the Fuelinjection nozzle 30, and the joint of fuel hose 42 on retainer 31 kept by second clip 49.
Wherein, fuel hose 42 is for example covered by the protection flexible pipe 50 that the rare rubber of ethene-third constitutes; be connected to fuel hose 42 under the state on the retainer 31 with second clip 49; from the distolateral protection flexible pipe 50 that passes of one, be connected on the connector 47 with first clip 48 from an end of the outstanding fuel hose 42 of protection flexible pipe 50.
First clamp holder 43 is connected integrally with board 52 on being installed in cylindrical part 51 formation is set, and the yielding rubber cylindraceous 53 that two ends have with flange 53a, the 53a of two end in contact of this cylindrical part 51 is installed on this cylindrical part 51 in the mode that connects this cylindrical part 51.And the protection flexible pipe 50 by lining fuel hose 42 passes aforementioned yielding rubber 53, and fuel hose 42 is controlled by first clamp holder 43, first clamp holder 43 is fastened to the bolt used on the vehicle body frame 11 55 inserts in the through hole of being located on the aforementioned mounting plate 51 54.
Second clamp holder 45 has identical structure with above-mentioned first clamp holder 43, via yielding rubber 53 and protection flexible pipe 50, controls fuel hose 42 with second clamp holder 45, utilizes bolt 56 that second clamp holder 45 is fastened on the supporting arm 46.
And; first and second clamp holder 43; 45 left and right sides separate configuration at the vehicle body center line BC that extends along fore-and-aft direction; fuel hose 42 between first and second clamp holder 43,45 and protection flexible pipe 50; also be configured in the same side of the left and right directions of vehicle body frame 11 by any clamp holder 43,45 wherein; in the present embodiment, under the direct of travel state that points to motorcycle, extend the ground configuration to the right.That is, the fuel hose 42 between first and second clamp holder 43,45 disposes agley in the mode of heaving to the right side of vehicle body frame 11.
In addition, motor E, with the position of the approximate centre of its left and right directions, be Fuelinjection nozzle 30 allocation position from aforementioned vehicle body center line BC to the mode of the same side of first clamp holder 43, i.e. left side skew, be bearing on the vehicle body frame 11, by such configuration, help guaranteeing the wobble length of fuel hose 42.
Secondly, effect to present embodiment describes, peristaltic pump 41 is built at the fore-and-aft direction of vehicle body frame 11, in the fuel tank 32 of position lift-launch on vehicle body frame 11 that leaves motor E, because petrolift is not installed on the power unit P, so, can make the power unit miniaturization, and improve the assembling performance of power unit P.
In addition, first clamp holder 43 of controlling the intermediate portion of fuel hose 42 is fixed on the vehicle body frame 11, and the left and right directions along vehicle body frame 11 disposes petrolift 42 agley between the Fuelinjection nozzle 30 on the motor E and first clamp holder 43 being attached to.Thereby, power unit P between the lower position shown in the top position shown in Fig. 6 (a) and Fig. 6 (b), along with swinging up and down, in fuel hose 42, the part between first clamp holder 43 and the motor E, reversing like that shown in the arrow of image pattern 6 (b).Thereby, can avoid because of swinging up and down of power unit P makes fuel hose 42 bending deflections, because fuel hose 42 is for the intensity height of the strength ratio of reversing for bending, so, compare with diastrophic situation, can improve the durability of fuel hose 42.
In addition, be fixed to motor E side owing to control second clamp holder 45 of part of the close motor E of fuel hose 42, between first and second clamp holders 43,45, fuel hose 42 is along the left and right directions curved configuration of vehicle body frame 11, so, utilize second clamp holder 45, can improve fuel hose 42 in the time of the curved configuration precision of the left and right directions of vehicle body frame 11, can prevent from this fuel hose 42, to occur bending and deformation at the joint of fuel hose 42 on Fuelinjection nozzle 30.
In addition, because first and second clamp holder 43,45, separate configuration is in the left and right sides of vehicle body center line BC, so, in fuel hose 42, can set the length between first and second long clamp holder 43,45, whereby, the bending load on the fuel hose 42 can be suppressed to be added in more reliably, the durability of fuel hose 42 can be further improved.
And then, because the aforementioned fuel hose 42 between first and second clamp holder 43,45 extends the ground configuration by any clamp holder 43,45 in the same example of the left and right directions of vehicle body frame 11, so, in fuel hose 42, length between first and second clamp holders 43,45 can further be set more longways, can further improve the durability of fuel hose 42.
And, because fuel hose 42 constitutes the multi-layer high-voltage types, so, increase the intensity of fuel hose, can improve the durability of the fuel hose 42 of direct high pressure fuel.
Embodiments of the invention have been described above, but the present invention is not limited to the foregoing description, under the situation of the present invention of the scope that does not exceed claim, can carries out various design alterations.
According to top the 1st aspect of the present invention, can make the power unit miniaturization and improve the assembling performance of power unit, by avoiding producing bending deflection, reverse and produce by swinging up and down of power unit P, can improve the durability of fuel hose.
According to the 2nd aspect of the present invention, can improve fuel hose in the precision of the left and right directions curved configuration of vehicle body frame 11, can prevent to produce bending deflection to the joint place of Fuelinjection nozzle at fuel hose.
According to the 3rd aspect of the present invention, the length setting between first and second clamp holder in the fuel hose can be got longly, can suppress to be added in the bending load on the fuel hose more reliably, can further improve the durability of fuel hose.
According to the 4th aspect of the present invention, can further the length setting between first and second clamp holder in the fuel hose be got longlyer, can further improve the durability of fuel hose.
According to the 5th aspect of the present invention, increase the intensity of fuel hose, can improve the durability of the fuel hose of direct high pressure fuel.