CN101121428B - Scooter-type motorcycle - Google Patents
Scooter-type motorcycle Download PDFInfo
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- CN101121428B CN101121428B CN2007101464874A CN200710146487A CN101121428B CN 101121428 B CN101121428 B CN 101121428B CN 2007101464874 A CN2007101464874 A CN 2007101464874A CN 200710146487 A CN200710146487 A CN 200710146487A CN 101121428 B CN101121428 B CN 101121428B
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Abstract
To reduce the length of a secondary air supply passage from a secondary air control valve to an exhaust system of an engine, and simplify piping arrangement structure by disposing the secondary air control valve sufficiently close to an engine main body, in a scooter-type motorcycle in which a power unit composed of the engine, and a transmission for transmitting an output of the engine to a rear wheel is swingablly supported by a body frame, and in which the exhaust system with an upstream end provided with an air cleaner disposed on an upper part of a transmission case for housing the transmission is connected to an upper side face of a cylinder head. The secondary air control valve 35 for controlling the quantity of secondary air supplied from the air cleaner 27 to the exhaust system of the engine, is disposed on a side of intake passage forming means 26, in front of the air cleaner 27 and above the engine main body 19, with at least one part overlapped with the intake passage forming means 26 in side view.
Description
Technical field
The present invention relates to a kind of motor scooter, wherein engine installation comprises driving engine, the cylinder axis of engine main body turns forward, also comprise change speed gear box, be used for the output of driving engine is delivered to trailing wheel, change-speed box is supported swingably by vehicle frame, described trailing wheel axle journal is connected to the rear portion of change speed gear box, gear box casing extends to engine main body, extends rearward to a side of trailing wheel, holds described change speed gear box, inlet channel with the upstream extremity that is connected to airfilter forms the downstream end of device, be connected to the upper side of the start cylinder cap of a part of forming engine main body, wherein, airfilter is arranged on change speed gear box top.
Background technology
In patent document JP2002-235535A, disclosed an example of this motor scooter (scooter-typemotocycle).In this motor scooter, be used to control the side that an auxiliary air control valve of amount that is fed to the additional air of engine's exhaust system from the secondary airfilter of air system is arranged on air system, see the top that is positioned at air system so from the side, described secondary airfilter is different from airfilter.
But when auxiliary air control valve relatively separated with driving engine, the length of the additional air feed path from the auxiliary air control valve to the engine exhaust system had increased, and pipeline is provided with structure and becomes complicated.In addition, because engine installation supported swingably by vehicle frame, thereby when described auxiliary air control valve was supported on the vehicle frame side, the gap of the pipeline of must guarantee fully to be used to interconnect auxiliary air control valve and engine installation was to allow described swing.Because this reason, described auxiliary air control valve preferably is positioned as close to the driving engine setting.
In addition, in the driving system that is installed in the engine installation in the motor bike, endless belt or chain be wound on by the axle drive shaft of the powered rotation of combustion engine and and the driven shaft of trailing wheel lock together between, the power of combustion engine is passed on the trailing wheel, motor bike is driven.
Described driving system is contained in the change speed gear box.
The change speed gear box of such engine installation extends back, and described change speed gear box generally is biased in the left side of combustion engine, and described change speed gear box is separated into both sides by long end wise.
In patent document JP2005-273763A, disclosed change speed gear box with this structure, disclosed change speed gear box has relative connection surface, left side and right side outward flange side direction at change speed gear box are separated, described connection surface contacts with each other, by bolt, described change speed gear box the inside is holding driving system.
In the change speed gear box that discloses in patent document JP2005-273763A, left change speed gear box is positioned at the car body outside, is connected to the left end of driven shaft by bearing.
Therefore, on left change speed gear box, be formed with the outer ring of bearing concave surface part with running in bearings.
In left change speed gear box, bearing concave surface partly is assembled to the outer ring of bearing, its inner ring is assembled on the left end of driven shaft, the joint face of described peripheral edge is connected on the joint face of peripheral edge of right change speed gear box, the driving system that is arranged in the left side of right change speed gear box of driving system is capped like this, left side change speed gear box, is attached on the described right case to right change speed gear box by bolt.
Because described left change speed gear box is attached as described above to fall right change speed gear box, described left change speed gear box may be not easy to lay down, because the bearing concave surface of left change speed gear box partly is assembled to the outer ring of bearing, bearing is assembled to the left end of driven shaft, even because maintenance or other reasons and release bolt and when laying down left change speed gear box.
That is to say, left side change speed gear box is moved to the left from right change speed gear box, the bearing concave surface that is assembled on the outer ring of bearing partly requires to be disassembled, yet, the lateral surface of left side change speed gear box is parallel to demolition and removes direction, can not work effectively in the power of removing on the direction, it is very difficult that the work of dismounting may become.
Summary of the invention
Therefore, in view of the problem that proposes previously, make the present invention, an object of the present invention is to provide a kind of motor scooter, wherein auxiliary air control valve very closely is arranged on by the engine main body, to solve the above-mentioned problem.
In addition, further aim of the present invention provides a kind of change speed gear box that outstanding workability is arranged, and wherein cross-divided change speed gear box can easily be dismantled, and dismantlement work does not need the too many work capacity and the time of engine installation.
In order to achieve the above object, the invention provides a kind of motor scooter, wherein engine installation comprises driving engine, and the cylinder axis of engine main body turns forward, and also comprises change-speed box, be used to transmit the trailing wheel that outputs to of driving engine, it is supported swingably by vehicle frame, and described trailing wheel axle journal connects (journalled) rear portion to change speed gear box, and gear box casing extends to engine main body, extend rearward to a side of trailing wheel, hold described change speed gear box; Inlet channel with the upstream extremity that is connected to airfilter forms the downstream end of device, be connected to the upper side of the start cylinder cap of a part of having formed engine main body, wherein, described airfilter is arranged on change speed gear box top, be used to control the auxiliary air control valve of amount that is fed to the additional air of engine's exhaust system from airfilter, be arranged on the side that inlet channel forms device, described auxiliary air control valve and high-tension coil are supported by strut jointly, strut is by engine main body or vehicle frame resilient mounting, described strut is arranged on the front portion of airfilter, by inlet pipe, and be installed on the engine main body, described auxiliary air control valve be arranged on inlet channel form the inlet pipe of device and throttle-valve body connecting portion close on the side.。
In addition, preferably, described auxiliary air control valve is by the strut resilient mounting.
In addition, structure except any aforesaid invention, the gearbox designs of engine installation has also been described, wherein cross-divided right side and left side change speed gear box are holding driving system, driving system comprises power transmission mechanism, its axle drive shaft and and the chain driven shaft of trailing wheel between, axle drive shaft is by the powered rotation of the combustion engine that is installed in the engine installation in the vehicle, the change speed gear box that is arranged on the outside of the car body outside right side and the left side change speed gear box is rotatably connected via an end of bearing and driven shaft, the described end of driven shaft is assembled to the bearing concave surface part, gearbox designs with engine installation, wherein be formed with relative protrusion piece, form relative joint face with the left side peripheral edge on the right side of described driven shaft in cardinal principle vertical summetry position.
In addition, except the structure of foregoing invention, between the protrusion piece slit can be set relatively.
In addition, except the structure of foregoing invention, described transmission device is the strap drive progressive gear transmission, wherein power transmission is the endless belt, be wound between axle drive shaft and the driven shaft, described right side and left side change speed gear box extend back from axle drive shaft in the front side, link to each other with driven shaft at rear side.
According to the present invention, described auxiliary air control valve is arranged on inlet channel and forms the device side, in the airfilter front with above the engine main body, sees that from the side at least a portion and inlet channel form the device overlaid.Therefore, described auxiliary air control valve can be arranged in the space of inlet channel formation device side effectively, close on engine main body as much as possible, reduce the length of additional air feed path like this from described auxiliary air control valve to engine's exhaust system, simplify pipeline structure is set, reduce the gap, to allow the swing of described engine installation, even when described auxiliary air control valve when frame sides is supported, for the interconnection between described auxiliary air control valve and the engine installation is provided with pipeline.Also have, because described engine main body is in below the auxiliary air control valve, when motor scooter travelled, described auxiliary air control valve was can actv. protected, avoids the spilling of mud and water.
In addition, according to the present invention, high-tension coil and auxiliary air control valve are by the strut together support.Like this, the quantity of the required strong point fire coil and the parts of auxiliary air control valve can reduce, and described strut can be installed on engine main body or the vehicle frame, and high-tension coil and auxiliary air control valve are supported by strut, has therefore simplified fitting work.And because launched machine main body of described strut or vehicle frame resilient mounting, the weight of the strut of installing by increase and high-tension coil and auxiliary air control valve can reduce natural frequency, raising vibrationproof performance.
In addition, according to the present invention, launched machine main body of described auxiliary air control valve or vehicle frame with two-stage vibration-proof structure resilient mounting, therefore suppressed to be delivered to the vibration of auxiliary air control valve more effectively.
In addition, owing to protrude the position that piece is formed on basic vertical summetry relatively, in each right side and left side change speed gear box, form the relative joint face of right side and left side change speed gear box at the driven shaft of right side and left side peripheral edge, power acts on described bearing recess effectively and is assembled on the direction of outer ring of bearing, the bearing cone that is assembled to driven shaft is by protruding between the piece insertion instrument relatively and protruding at two that the expansion slit is disassembled between the piece, described bearing recess can easily be dismantled, whole change speed gear box can easily be dismantled, and do not destroy the outer surface of described change speed gear box, described gearbox designs is very good aspect the availability of dismounting.
In addition, owing to have the gap between the protrusion piece relatively, instrument is easy to be inserted between the relative protrusion piece, and the availability of dismounting further improves.
In addition, because driving system is the conveyor type progressive gear transmission, wherein power transmission mechanism is the endless belt, is wound between axle drive shaft and the driven shaft, and described right side and left side change speed gear box extend back from axle drive shaft in the front side, link to each other with driven shaft at rear side.The right side of described belt conveyor progressive gear transmission and left side change speed gear box are manufactured to vertically long, reduced the change speed gear box self rigidity, when the dismounting change speed gear box, power is difficult to be delivered to the bearing recess that is assembled to outside race, yet, with the effect of putting forth effort, by closing on bearing with driven shaft insertion instrument between the relative protrusion piece of basic vertical summetry position, two gaps of protruding between the piece have been expanded, power affacts the direction of the dismounting of the race bearing concave part that is assembled to bearing effectively, can easily dismantle a change speed gear box, and can not make described change speed gear box distortion, can keep dismantling very high availability.
Description of drawings
Fig. 1 is the left view of motor scooter.
Fig. 2 is the driving engine transparent view that oblique the place ahead is seen from the right side of laying down lid.
Fig. 3 loads onto the partial right side view that the driving engine of lid is seen in the direction of arrow from Fig. 23.
Fig. 4 is the amplification profile along Fig. 3 center line 4-4.
Fig. 5 is that Fig. 3 is at the enlarged drawing of laying down vitals under the situation of lid.
Fig. 6 is corresponding to Fig. 5, for removing the view behind the high-tension coil.
Fig. 7 is the strut seen from the LAO lower curtate and the transparent view of auxiliary air control valve.
Fig. 8 is the section-drawing along Fig. 4 center line 8-8.
Fig. 9 is the lateral plan that is equivalent to one embodiment of the present of invention, shows the engine installation that omits a part.
Figure 10 is the section-drawing of engine installation.
Figure 11 is the lateral plan of gear shift cover.
Figure 12 is the back view of gear shift cover.
Figure 13 is the transparent view at the rear portion of the engine installation seen above diagonal line.
Figure 14 is the transparent view at the rear portion of the engine installation seen below diagonal line.
The specific embodiment
Embodiments of the invention are below with reference to the accompanying drawings described the present invention.
Fig. 1 to 8 has illustrated described embodiment of the present invention.Fig. 1 is the left view of motor scooter.Fig. 2 is the driving engine transparent view that oblique the place ahead is seen from the right side of laying down lid.Fig. 3 loads onto the partial right side view that the direction of driving engine arrow 3 from Fig. 2 of lid is seen.Fig. 4 is the amplification profile along Fig. 3 center line 4-4.Fig. 5 is that Fig. 3 is at the enlarged drawing of laying down vitals under the situation of lid.Fig. 6 is the view that is equivalent to after Fig. 5 removes high-tension coil.Fig. 7 is a transparent view of examining auxiliary air control valve from the strut that the LAO lower curtate is seen.Fig. 8 is the section-drawing along Fig. 4 center line 8-8.
With reference now to Fig. 1,, have the motor scooter vehicle frame F of low template pedal 11, pipe 13 before being equipped with, controllably the front fork 12 of support and connection front-wheel WF also is equipped with a pair of left and right side frame 14, manages on 13 before its leading section is connected to.Each bogie side frame 14 integrally comprises manages the 13 longitudinal carrier part 14a that extend downwards in the past, the lower bracket part 14b that extends from the bottom of longitudinal carrier part 14a, below pedal 11, extend back, form its latter half and backward and be inclined upwardly, rising holder part 14c extends in the rear end of lower bracket part 14b and extends upward at the rear portion of pedal 11, bogie side frame 14 also comprises seat slide part 14d, extend back from the rear end of rising holder part 14c and to ride seat 15 with support, each bogie side frame forms by the single pipe of bending.
Between the front portion of the rear portion of the lower bracket part 14b of bogie side frame 14 and its seat slide part 14d, have rear portion subframe 16, be positioned at lower bracket part 14b following of bogie side frame 14 and the back of ascending branch frame part 14c thereon.Pivot plate 17 is arranged between two bogie side frames 14 and two the rear portion subframes 16.
On the pivot plate 17 of vehicle frame F, comprise that the engine installation P of driving engine E is arranged on the front of trailing wheel WR, the change speed gear box M that is arranged on trailing wheel WR left side can vertical oscillation, vertically supports swingably by bindiny mechanism 18.Trailing wheel WR is connected to the rear portion of engine installation P.Described change speed gear box M comprises V-shape belt progressive gear transmission (not shown) and the progressive gear transmission that is used to slow down is exported with the reduction gear train (not shown) on the axle that sends it to trailing wheel WR.
With reference to figure 2, the engine main body 19 of driving engine E is a single cylinder, water-cooled four cycle engine, has crankcase 20, crankcase 20 is constituted jointly by two left and right sides crankcase halfbody 20L and 20R about being divided into, also have the start cylinder body 21 that is connected on the crankcase 20, be connected to the start cylinder cap 22 of start cylinder body 21, be connected to the top cover 23 of start cylinder cap 22.Change speed gear box M is located in the gear box casing 25 (referring to Fig. 1), extends to the left side of trailing wheel WR from crankcase 20.Between the rear portion of the rear portion of the left-side seat rail sections 14d of vehicle frame F and gear box casing 25, be provided with rear portion vibration absorption unit 24.
The upper side of the start cylinder cap 22 of engine main body 19 is connected to the downstream end that inlet channel forms device 26, and upstream extremity is connected on the airfilter 27, and airfilter 27 is arranged on the top of gear box casing 25, is supported by gear box casing 25.Inlet channel forms device 26 and has inlet pipe 28, and upstream extremity is connected on the airfilter 27, and throttle-valve body 29 is arranged between the downstream end and start cylinder cap 22 of inlet pipe 28.The injection valve 30 that fuel is injected into gaseous state passes throttle-valve body 29, is installed on the start cylinder cap 22.
With reference to figure 1, the exhaust system 31 that is connected to the downside of start cylinder cap 22 comprises freeing pipe 32, freeing pipe 32 is connected to the bottom of start cylinder cap 22, extend to the right side of trailing wheel WR from the right lower quadrant of engine main body 19, also comprise exhaust muffler 33, it is connected on the freeing pipe 32, is arranged on the right side of trailing wheel WR.
With reference to figure 3 to 5, be sent to the exhaust system 31 of driving engine E through auxiliary air control valve 35 by airfilter 27 purified waste gas.Auxiliary air control valve 35 and high-tension coil 36 are supported by strut 37 together, and strut 37 is by engine main body 19 or vehicle frame F resilient mounting.According to present embodiment, auxiliary air control valve 35 and high-tension coil 36 are supported by strut 37 together, and strut 37 covers 38 resilient mountings by the right side of the right flank of the crankcase 20 that is connected to engine main body 19.Strut 37 is arranged on the front portion of airfilter 27, by inlet pipe 28, is installed on the engine main body 19 by the bolt 46 and 47 that inserts from engine main body 19 1 sides by Rubber Parts 42 and 43 is installed.
With reference to figure 6 and 7, strut 37 is formed by the welding gang by first and second stay bearing plates 39 and 40 simultaneously.First stay bearing plate 39 integrally comprises installs shank 39a and 39b, vertical extent before and after being divided into, connect board 39c and be extended to two upper ends that shank 39a and 39b are installed jointly, to curve inwardly is the right angle, rising board 39d extends upward from the inner end that connects board 39c, the 39e of lower support portion from the bottom of rising board 39d to projecting inward, the 39f of midship mounting portion outwards protrudes from the vertical centre portion of rising board 39d, the 39g of upper support portion curves inwardly from the upper end of rising board 39d, and it forms by crooked single steel plate.
The 39e of lower support portion forms L shaped substantially by this way on horizontal surface: the part of the bottom of rising board 39d is cutting and upwards rise inwardly.Bottom at rising board 39d is formed with rectangular aperture 41 corresponding to lower support portion 39e place.The 39f of midship mounting portion outwards protrudes to form the right angle with rising board 39d from rising board 39d.The 39g of upper support portion forms substantially L shaped on the vertical plane surface perpendicular to rising board 39d, extends upward from the upper end of rising board 39d.
On the other hand, second stay bearing plate 40 integrally comprises installs board 40a, two of first stay bearing plate 39 shank 39a and the outside adjacency of 39b are installed on it, be welded to and install on shank 39a and the 39b, 40b of pair of support arms portion and 40c are outwardly-bent for the right angle and stretch out from the front and rear of upper end that board 40a is installed, and it forms by crooked single steel plate.
Two of strut 37 shank 39a and 39b being installed passes and installs on the right side lid 38 that rubber bodies 42 and 43 is installed to engine main body 19.More particularly, cylindrical collar 44 has the collar 44a between the end that is clipped in right lid 38 and rubber bodies 42 is installed at the one end, be inserted into rubber 42 to be installed and to be installed to and install on the shank 39a, also has packing ring 45, in connection with the other end that rubber bodies 42 is installed.Bolt 46 is inserted into packing ring 45 and neck ring 44, is screwed to 38 li on right lid, and integrally has flange section 46a, clips packing ring 45 between the other end that rubber 42 is installed and flange portion 46a.
It is the same with structure on shank 39a being installed to right lid 38 that the mounting structure of shank 39b is installed, and uses rubber 43 and bolt 47 to be installed to right the lid on 38.
High-tension coil 36 is installed on two the supporting arm part 40b and 40c of strut 37.Also promptly, the shell 48 of high-tension coil 36 is arranged between supporting arm part 40b and the 40c, and protrude from the two ends of shell 48 at the two ends of core 49, is fixed to supporting arm part 40b and 40c with bolt 50 and 51.In addition, bolt 50 and 51 is screwed into welded nut 52 and 53 li, is fixed to reliably on the lower surface of supporting arm part 40b and 40c.
The high tension cable 54 that extends forward from the shell 48 of high-tension coil 36 extends towards the engine main body 19 of driving engine E.
It is cylindrical that the valve pocket 55 of auxiliary air control valve 35 forms outer vertically extending ladder.Be arranged on the bottom of valve pocket 55 internally towards the supporting arm part 56 of the 39e of lower support portion of strut 37, pass and rubber 57 is installed is supported by the 39e of lower support portion.
More specifically, cylindrical collar 58 has the collar 58a between the end that is clipped in the 39e of lower support portion and rubber 57 is installed at the one end, is inserted into rubber 57 is installed is installed on the supporting arm part 56, also has packing ring 59, in connection with the other end that rubber 57 is installed.In addition, bolt 60 is inserted into packing ring 59 and neck ring 58, is screwed into welded nut 61, and integrally has flange section 60a, clips packing ring 59 between the other end that rubber 57 is installed and flange portion 60a.
With reference to figure 8, the top at the valve pocket 55 of auxiliary air control valve 35 is equipped with the dish type cap of being made by the elastomeric material of for example rubber 62.Keep the top holding element 63 of valve pocket 55 to pass cap 62, support by the 39g of upper support portion by rubber 64 is installed.
Holding element 63 forms and integrally comprises fastener 63a, forms circular arc, is being close to the exterior periphery of whole circumferentia around cap 62, and a biconjugate board 63b and 63c outwards protrude from the two ends of fastener 63a, toward each other.By making board 63b and 63c are got close to mutually, the peripheral closed contact of fastener 63a and cap 62, like this, the top of valve pocket 55 is held element 63 and keeps.
Holding element 63 be set to each to board 63b and 63c to board 63b facing to the 39g of upper support portion.Rubber 64 is installed to be installed on the 39g of upper support portion.Cylindrical collar 66, the one end have be clipped in holding element 63 to board 63b and collar 66a between the end of rubber 64 is installed, be inserted into rubber 64 be installed, packing ring 67 is in connection with the other end that rubber 64 is installed.In addition, bolt 68 is inserted into packing ring 67, and neck ring 66 and two are screwed into welded nut 65 to board 63b and 63c, and integrally have flange section 68a, clips packing ring 67 between the other end that rubber 64 is installed and flange portion 68a.
In such a way, auxiliary air control valve 35 is by the 39e of lower support portion and the 39g of the upper support portion resilient mounting of strut 37.Cover the auxiliary air control valve 35 of strut 37 resilient mountings of 38 resilient mountings by the right side of engine main body 19, be arranged on inlet channel form the front of side of device 26 and airfilter 27 and engine main body 19 above, see at least a portion and inlet channel formation device 26 overlaids from the side.In the present embodiment, auxiliary air control valve 35 be arranged on inlet channel form the inlet pipe 28 of device 26 and throttle-valve body 29 connecting portion close on the side.
The downstream end of upstream rubber tube 70 and the upstream extremity that is connected to airfilter 27 are connected to the top of the valve pocket 55 of auxiliary air control valve 35.The downstream rubber tube 71 that is connected to the bottom of valve pocket 55 extends towards engine main body 19, provides additional air with the exhaust system 31 to driving engine E.On upstream rubber tube 70, be connected to airfilter 27 from the breather hose 81 of engine main body 19 guiding piston ring gas leakages.
Shown in Fig. 3 and 4, high-tension coil 36 is supported by strut 37, and upstream rubber tube 70 is covered by lid 72 nearby to the connecting bridge of airfilter 27.The rear portion of lid 72 is fixed on the airfilter 27 with bolt 73 (referring to Fig. 3).Lid 72 is supported on the midship mounting part 39f of strut 37 by rubber 74 is installed.
More specifically, cylindrical collar 75 has at the one end and to be clipped in the middle support section 39f and collar 75a between the end of rubber 74 is installed, and insert rubber is installed is installed on the lid 72 for 74 li, and packing ring 76 is close to the other end that rubber 74 is installed.In addition, bolt 77 is inserted into packing ring 76 and neck ring 75 and is screwed into welded nut 78, is fixed to reliably on the midship mounting part 39f, and integrally has flange section 77a, clips packing ring 76 between the other end that rubber 74 is installed and flange portion 77a.
Tip at the supporting arm part 40b of strut 37 shown in Fig. 4 and 7, is equipped with the grommet 79 that elastomeric material is made.As shown in Figure 4, the pin 80a that can resiliently be assembled to 79 li of grommets integrally is arranged in the projection of stop sleeve 80, and stop sleeve 80 integrally is arranged on the lid 72, nestles up grommet 79 from the top.That is to say that lid 72 is releasably attached on airfilter 27 and the strut 37.
Then, will the advantage of present embodiment be described.Being used to control the auxiliary air control valve 35 of amount that offers the additional air of engine exhaust system 31 from airfilter 27 is arranged on inlet channel and forms device 26 sides, upstream extremity is connected to airfilter 27, downstream end is connected to engine main body 19, before airfilter 27 and on the engine main body 19, see that from the side at least a portion and inlet channel form device 26 overlaids.Therefore; auxiliary air control valve 35 can be arranged on the space that inlet channel forms device 26 sides effectively; close on engine main body 19 as much as possible; the additional air that reduces the exhaust system 31 from auxiliary air control valve 35 to driving engine E like this provides the length of passage; simplify pipeline structure is set; in addition; because engine main body 19 is arranged on below the auxiliary air control valve 35; in the motor scooter driving process; auxiliary air control valve 35 can be protected effectively, avoids splashing of mud and water.
Further, auxiliary air control valve 35 and high-tension coil 36 are supported by the strut 37 that engine main body 19 supports together.Therefore, reduced the number of components of strong point fire coil 36 and auxiliary air control valve 35, strut 37 can be installed on the engine main body 19, and high-tension coil 36 and auxiliary air control valve 35 are supported by strut 37, have simplified fitting work like this.In addition, because strut 37 is by engine main body 19 resilient mountings, strut 37 is installed with high-tension coil 36 and auxiliary air control valve 35, and weight has increased relatively, has reduced natural frequency like this, has improved the vibrationproof performance.
In addition, auxiliary air control valve 35 is by strut 37 resilient mountings, like this with double vibration-proof structure by engine main body 19 resilient mountings, therefore, more effectively suppressed to be delivered to the vibration of auxiliary air control valve 35.
An alternative embodiment of the invention, strut 37 can be by the vehicle frame F resilient mounting.In this case, auxiliary air control valve 35 is arranged on inlet channel and forms device 26 sides, before airfilter 27 and on engine main body 19, see from the side, at least a portion and inlet channel form device 26 overlaids, thereby reduce the spacing of plumbing connection auxiliary air filter 35 and engine installation P, allow the swing of engine installation P.
Except that the embodiment of the invention described above, the change speed gear box of engine installation can be advantageously provided into described as follows with reference to the description in the following examples of the present invention shown in the figure 9 to 16.
As shown in Figures 9 and 10, engine installation P comprises combustion engine E, is arranged on the car body front side, as the belt conveyor progressive gear transmission T of transmission system,, the left side that is arranged on combustion engine E with biasing extends back, and reduction gear train R is arranged on belt conveyor progressive gear transmission T rear portion.
The Cell 211 of engine installation P laterally is divided into left Cell 211L and right Cell 211R, the crank motion of piston 216 that is slidingly matched to the cylinder internal diameter 212a of start cylinder body 212 is delivered to the bent axle 215 by Cell 211 rotational support, bent axle is laterally placed via connecting rod 217, and bent axle 215 rotates.
Start cylinder body 212 is tilted forward to almost level, and protrudes forward from Cell 211, and start cylinder cap 213 is placed on the start cylinder body 212, and cylinder front cover 214 is covered with the valve train 220 on the start cylinder cap 213.
Admission port rocking arm 222i and rocking arm 222e can joltily contact the camshaft 221 of valve train 220, and unshowned inlet port valve and air extractor duct valve are opened and closed by admission port rocking arm 222i and rocking arm 222e.
Light-up plug 226 is connected to start cylinder cap 213, and the pneumoelectric utmost point is exposed to 225 li of combustion chambers, is opened by the top board surface segmentation, and it is top relative with piston 216.
The left-hand peristome of left side Cell 211L is covered with from the left side by gear shift cover 270, and the power transmission chamber C of accommodating belt toric transmission change speed gear box T inside forms.
That is to say that left Cell 211L and gear shift cover 270 have formed change speed gear box, the right change speed gear box that side direction is separated the change speed gear box acquisition is left Cell 211L, and left change speed gear box is a gear shift cover 270.
The driving pulley 230 of band progressive gear transmission T is connected to the left end that the main bearing 210 from the left Cell 211L of bent axle 215 protrudes left.
Described driving pulley 230 has: stationary sheave half divides 230a, be fixed on the bent axle 215 at drive side, axially and the hand of rotation of bent axle as axle drive shaft, have conical surface, have V-type band 232 on it; At the mobile belt wheel half part 230b of drive side, be positioned at the right side that the drive side stationary sheave half divides 230a and be connected on the bent axle 215, it has conical surface and not removable at the hand of rotation of bent axle in bent axle axially movable, on it with V-type band 232; Hang plate 230c, bent axle axially and hand of rotation be fixed on the bent axle 215; A plurality of load roller 230d are arranged between the mobile belt wheel half part 230b and hang plate 230c of drive side.
Simultaneously, at the rear portion of power transmission chamber C, by left Cell 211L, the rotatably axle journal of gear shift cover 270 and gear case cover 251 supports the driven shaft 250 relative with axle drive shaft (bent axle 215) via bearing 234,235,236.
Counterrotating turnbarrel 237 is by driven shaft 250 and driven pulley 240 common axial support via bearing 238,239, and the driving pulley 230 of driven pulley 240 on turnbarrel 237 forms a pair of.
Driven pulley 240 combines with following parts: turnbarrel 237, and divide 240a to be arranged on drive side with stationary sheave half, it is under an embargo in axial activity; Movable belt wheel half part 240b is at drive side, and it can axially be moved in the periphery of turnbarrel 237, and can slightly move at hand of rotation; Cylindrical helical compression spring 240c divides 240a that movable belt wheel half part 240b is pressed to drive side at drive side towards stationary sheave half.
The stationary sheave half that V-type band 232 is wound on the drive side of driving pulley 230 in front divides between the relative conical surface of mobile belt wheel half 230b of 230a and drive side, and the stationary sheave half that is wound on the transmission side of driven pulley 240 in the back divides between the relative conical surface of mobile belt wheel half part 240b of 240a and transmission side.
Because band progressive gear transmission T is configured to as mentioned above, when the engine speed of combustion engine E is little, the stationary sheave half that leaves at the drive side of driving pulley 230 at the mobile belt wheel half part 230b of drive side divides 230a, the winding radius of V-type band 232 is very little, 240 li of driven pulleys, because the mobile belt wheel half part 240b of the transmission side that is pushed by helical compression spring 240c divides 240a near the stationary sheave half of transmission side, the winding radius of V-type band 232 is very big, and the power of bent axle 215 is delivered on the output shaft with big speed ratio.
Because a plurality of weight roller 230d move at the centnifugal force that radial outside is driven belt wheel 230, push mobile belt wheel half part 230b at drive side, when engine speed increased, it divided 230a at drive side near stationary sheave half like this.The winding radius of V-type band 232 increases, and 240 li of driven pulleys, divides 240a owing to overcome the stationary sheave half that helical compression spring 240c elastic force leaves drive side at the mobile belt wheel half part 240b of transmission side, and the winding radius of V-type band 232 reduces, and transmitting ratio reduces.
The clutch housing 248 of centrifugal clutch L is assembled on the driven shaft 250 that extends in the left side of the left end of turnbarrel 237, and driving disk 245 is assembled to the left end of turnbarrel 237 in bowl-type clutch housing 248 the insides.
When turnbarrel 237 rotates with the rotating speed greater than desired speed, a plurality of clutch shoes 246 that driving disk 245 shakes support are vibrated at radial outside by the elastic force that centnifugal force overcomes clutch spring 247, the friction element 246a that is arranged on each clutch shoe 246 outside touches the inside face of clutch housing 248, centrifugal clutch L is rotationally connected, and the rotation of driven pulley 240 is passed on the driven shaft 250.
Gear case cover 251 is covered with the right side at the rear portion of left Cell 211L, has formed reducing gear chamber 252, and reduction gear train R is located at 252 li of reducing gear chambers.
In the reducing gear chamber 252 li, reducing gear axle 253 is parallel to driven shaft 250 via bearing 254,254 to be supported rotatably, in addition, rear axle 255 is by bearing 256,256, support rotatably, the right axle shaft of rear axle 255 passes gear case cover 251 and outwards protrudes, and trailing wheel is supported by described right axle shaft.
Like this, the rotative speed of driven shaft 250 is lowered through reduction gear train R, and rotation is passed to rear axle 255, and trailing wheel is rotated.
As mentioned above, the power of the bent axle 215 of the band progressive gear transmission T of combustion engine E is input to the driving pulley 230 of band progressive gear transmission T, to change automatically according to the transmitting ratio of the engine speed of being with the combustion engine E in the progressive gear transmission T, be delivered on the driven pulley 240, further, be delivered to driven shaft 250 via centrifugal clutch L.
After rotative speed was decelerated train of gears R reduction, the rotation of driven shaft 250 was passed to rear axle 255.
The power transmission chamber C that holds described band progressive gear transmission T that gear shift cover 270 and left Cell 211L form respectively is equivalent to left change speed gear box and the right change speed gear box that long respectively vertical and horizontal separate, interconnect face 271a, 261a forms (seeing Fig. 9 and 12) along being positioned at vertical same plane annularly with long elliptical edge 271,261 longitudinally.
Shown in Figure 11 and 12,270 li of gear shift covers, the otch 272 of exhausr port is formed on the rear lower of the elliptical edge 271 that forms joint face 271a, and the groove 271b that wherein is equipped with packing element 280 is formed on the joint face 271a except the otch 272 of elliptical edge 271.
Each a plurality of fixing lug boss 273 that all have a hole of tightening screw is protruded on the elliptical edge 271 of gear shift cover 270 along joint face 271a.
Fixing lug boss 274 is also protruded in the basic center of gear shift cover 270, upward to the joint face 271a in the C of power transmission chamber.
For the circular open 275 of windbreak setting is formed on following place: bent axle 215 is relative in the front of gear shift cover 270, is formed on driven shaft 250 part relative at the rear portion with the bearing concave surface part 276 of the outer ring of running in bearings on it 235.
Have along joint face 271a and protrude piece 277,278 with the rectangle same plane of joint face 271a and be formed on vertical summetry position substantially, bearing concave surface is on the elliptical edge 271 of part 276 (perhaps driven shaft 250) at gear shift cover 270.
As shown in Figure 9, being equipped with in the left Cell 211L of gear shift cover 270, be formed with otch 262 corresponding to otch 272, the joint face 261a of elliptical edge 261 is relative with joint face 271a.
Fixing lug boss 263 with negative thread is formed on the peripheral edge 261 of left Cell 211L corresponding to a plurality of fixing lug boss 273 of gear shift cover 270.
Fixing lug boss 263 has the plane identical with joint face 261a.
Fixing lug boss 264 protrudes into the joint face 261a in the C of power transmission chamber from the basic center of left Cell 211L, corresponding to the fixing lug boss 274 of gear shift cover 270.
Rectangle protrudes piece 267,268 and is formed on the peripheral edge 261 of Cell 211L, and is relative with the protrusion piece 277,278 of gear shift cover 270.
Protrude piece 267,268 and be positioned at vertical summetry position substantially, be formed on the position of leaving joint face 261a to the right a little with driven shaft 250.
When gear shift cover 270 is connected on the above-mentioned left Cell 211L, its back seal element 280 fits into the joint face 271a in the groove 271b of peripheral edge 271 of gear shift cover 270 and touches the joint face 261a of the peripheral edge 261 of left Cell 211L, the bearing concave surface part 276 of assembling gear shift cover 270 is to the outer ring of bearing 235, the inner ring of bearing 235 is assembled to the left end of driven shaft 250, bolt 281 is inserted into the fixing lug boss 263 of gear shift cover 270, in each hole of 264, be screwed to the fixing lug boss 273 of left Cell 211L, in each negative thread of 274, be fixed up.
When gear shift cover 270 was connected on the above-mentioned left Cell 211L, it is relative with each protrusion piece 277,278 of change speed gear box case 270 sides via the slit shown in Figure 13 and 14 that each of left Cell 211L protruded piece 267,268.
Preceding L lid 282 is connected to the left side of the front end of gear shift cover 270, is connected to left Cell 211L, is covered with the circular open 275 of gear shift cover 270.
When gear shift cover 270 owing to maintenance or other reason when left Cell 211L throws off, bolt 281 at first is removed, gear shift cover 270 is as long as pullled in the left side of left Cell 211L, yet, because the bearing concave surface part 276 of gear shift cover 270 is assembled on the outer ring of bearing 235 of left end of driven shaft 250, is not easy to throw off gear shift cover.
So, be equivalent in the gearbox designs of present embodiment, the top of gear shift cover 270 can utilize lever principle easily to be moved to the left, (end of instrument is flat and point with an end of instrument, manifold screwdriver for example) is inserted into the protrusion piece 277 of gear shift cover 270 sides and the slit between the protrusion piece 267 of the left Cell 211L of the upside of driven shaft 250 relatively separately, the base portion of downward pusher, described like this slit is expanded, same, the downside of gear shift cover 270 can easily be moved to the left, protrusion piece 278 by instrument being inserted into gear shift cover 270 sides and the slit between the protrusion piece 268 of the left Cell 211L of the downside of driven shaft 250 relatively separately, operate on it, described like this slit is expanded.
That is to say, because gear shift cover 270 can be moved to the left with lower position on gear shift cover 270 closes on bearing concave surface part 276 from left Cell 211L, be assembled on the outer ring of bearing 235, power acts on the direction of the bearing concave surface part 276 of taking out the outer ring that is assembled to bearing 235 effectively, bearing concave surface part 276 can easily be taken out, when bearing concave surface part 276 was removed, gear shift cover 270 was thrown off.
As mentioned above, gear shift cover 270 can easily be thrown off from left Cell 211L, and indeformable or destruction gear shift cover 270, present embodiment is being extraordinary aspect the availability that breaks away from.
When 270 work of left Cell 211L and gear shift cover, the protrusion piece 267,268 of left Cell 211L and the protrusion piece 277,278 of gear shift cover 270 also can be with the briquettings of fix left Cell 211L and gear shift cover 270.
Though described embodiments of the invention, the present invention is not limited in the scope of the foregoing description.Not breaking away under the situation of the present invention of claim range describe, can carry out multiple design variations.
19............ engine main body
22............ start cylinder cap
25............ gearbox
26............ air intake duct forms device
27............ air filter
31............ gas extraction system
35............ auxiliary air control valve 35
36............ ignition coil
37............ strut
211............ Cell
211L............ left Cell
211R............ right Cell
215............ bent axle
230............ driving pulley
232............V type band
235............ bearing
240............ driven pulley
250............ driven shaft
255............ rear axle
261............ peripheral edge
261a............ joint face
263, the 264...... fixing lug boss
267,268...... protrudes piece
270............ gear shift cover
271............ peripheral edge
271a............ joint face
271b............ groove
273, the 274...... fixing lug boss
276............ bearing concave surface part
277,278...... protrudes piece
280............ packing element
C............ power transmission chamber
E............ combustion engine
F............ vehicle frame
L............ centrifugal clutch
M............ change speed gear box
P...... engine installation
R...... reduction gear train
T...... be with progressive gear transmission
WR...... trailing wheel
Claims (1)
1. motor scooter, wherein engine installation (P) comprises driving engine (E), the cylinder axis of engine main body (19) turns forward, the change speed gear box (M) that the output that is used for transmitting driving engine (E) is sent to trailing wheel (WR) is supported swingably by vehicle frame (F), described trailing wheel (WR) axle journal is connected to the rear portion of gear box casing (25), gear box casing (25) extends to engine main body (19), and extend rearward to a side of trailing wheel (WR), be used to hold described change speed gear box (M), downstream end with inlet channel formation device (26) of the upstream extremity that is connected to airfilter (27) is connected to the upper side of the start cylinder cap (22) of a part of forming engine main body (19), wherein, described airfilter (27) is arranged on gear box casing (25) top
Wherein, be used for control is fed to the exhaust system (31) of driving engine (E) from airfilter (27) the auxiliary air control valve (35) of amount of additional air and be arranged on the side that inlet channel forms device (26),
Described auxiliary air control valve (35) and high-tension coil (36) are supported by strut (37) jointly, and strut (37) is by engine main body (19) or vehicle frame (F) resilient mounting,
Described strut (37) is arranged on the front portion of airfilter (27), and form the inlet pipe (28) of device (26) by inlet channel, and be installed on the engine main body (19), and
Described auxiliary air control valve (35) be arranged on inlet channel form the inlet pipe (28) of device (26) and throttle-valve body (29) connecting portion close on the side.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006176442A JP4799290B2 (en) | 2006-06-27 | 2006-06-27 | Power unit transmission case |
| JP176442/06 | 2006-06-27 | ||
| JP2006198928A JP4785658B2 (en) | 2006-07-21 | 2006-07-21 | Scooter type motorcycle |
| JP198928/06 | 2006-07-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101121428A CN101121428A (en) | 2008-02-13 |
| CN101121428B true CN101121428B (en) | 2010-12-08 |
Family
ID=39066724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101464874A Expired - Fee Related CN101121428B (en) | 2006-06-27 | 2007-06-27 | Scooter-type motorcycle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4799290B2 (en) |
| CN (1) | CN101121428B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6442232B2 (en) * | 2014-11-04 | 2018-12-19 | ヤマハ発動機株式会社 | Drive unit and battery-assisted bicycle |
| JP6678088B2 (en) * | 2016-09-26 | 2020-04-08 | 本田技研工業株式会社 | Power unit drive wheel speed detection sensor protection structure |
| CN117772808B (en) * | 2024-02-23 | 2024-05-10 | 太原理工大学 | Gear device for calibrating different speed ratio and asynchronous rolling mill |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113676Y2 (en) * | 1971-05-28 | 1976-04-12 | ||
| JPS5552035Y2 (en) * | 1976-07-31 | 1980-12-03 | ||
| JPS60157428U (en) * | 1984-03-30 | 1985-10-19 | 日野自動車株式会社 | Transmission |
| JP4057852B2 (en) * | 2002-06-26 | 2008-03-05 | 本田技研工業株式会社 | Power unit for motorcycle |
| JP2005273763A (en) * | 2004-03-24 | 2005-10-06 | Yamaha Motor Co Ltd | Belt type power transmission device and travelling vehicle equipped with the same |
| JP4583139B2 (en) * | 2004-11-02 | 2010-11-17 | ダイハツ工業株式会社 | Assembling structure and assembling method of continuously variable transmission |
-
2006
- 2006-06-27 JP JP2006176442A patent/JP4799290B2/en not_active Expired - Fee Related
-
2007
- 2007-06-27 CN CN2007101464874A patent/CN101121428B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008008320A (en) | 2008-01-17 |
| CN101121428A (en) | 2008-02-13 |
| JP4799290B2 (en) | 2011-10-26 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 |