CN1083934C - Air filter for motor scooter - Google Patents

Abstract

This is an air filter for scooter type motorcycle. Air filter for scooter type motorcycle is located inside of shell. It is equipped in the cleaning chamber for engine and at least part of it is extended into cleaning chamber for V belt cooling around cleaning chamber for engine. By filtering means, cleaning chamber for engine and cleaning chamber for V belt cooling are divided into air intake chamber and air outtake chamber. Air intake opening is equipped in air intake chamber. A first cleaning air outtake opening is connected to in-taking system of engine in the air outtake chamber. A second cleaning air outtake opening is connected to transmission box involving V belt transmission device at the position, which is at the down flow side of air outtake chamber for V belt cooling cleaning chamber. It is higher than the setting position below the cleaning chamber for the engine.

Description

Air filter for motor scooter

The present invention relates to improvement to employed air-strainer in the scooter.

Employed in the past small-sized scooter, by motor, be built-in with the transmission case of V-shape belt formula transmission device, be installed in the whole transmitting assemblies that constitutes of one or two trailing wheel at this transmission case rear portion, need V-shape belt formula transmission device is cooled off to improve the durability of power transmission with V-shape belt.

Cooling means as above-mentioned V-shape belt formula transmission device, for example comprise by to be equipped with power transmission with the air in the transmission case of V-shape belt stir the method that reduces gas temperature in the transmission case and, outside air is imported in the transmission case to reduce the method for the gas temperature in the transmission case.

As the latter's outside air importing type cooling unit, opened in the clear 60-185632 communique the spy the device of this pattern has been done to describe in detail.In this cooling unit, integral body is provided with cooling fan on the drive shaft side belt pulley of V-shape belt formula transmission device, is provided with perforate with the opposed position of this fan in transmission case, so that outside air imports in the transmission case from perforate.

Yet above-mentioned existing cooling unit has following shortcoming.

That is, the shortcoming of the former stirring type cooling unit is: because air reduces gas temperature in the transmission case by stirring, do not enter in the airtight transmission case from the outside though do not worry dust etc., can cause the low problem of cooling capacity.

And in the latter's outside air introducing-type cooling unit, owing to be by outside air being imported in the transmission case to reduce the gas temperature in the transmission case, though there is the high advantage of cooling capacity, but invade transmission case inside with outside air owing to must prevent dust, for example open put down in writing in the clear 60-185632 communique such the spy, promptly must in transmission case, be provided with in order to cover the dust guards such as lid of outside air introducing port, or V-shape belt tempering air filter cleaner must be set in addition, thereby there is the one side that is unfavorable for reducing manufacture cost.As previously mentioned, because externally the air introducing port is provided with element or is provided with professional component in addition, therefore exist to require the user must force regularly to change the trouble of element for the use of cooling unit.Moreover, slide and significantly reduced transmission capacity owing to oil can be bonded to make on the V-shape belt between belt pulley and V-shape belt to produce, can not use the defective that is used for V-shape belt cooling wet type element usefulness, that have efficient purifying effect so in structure in the past, exist.

The object of the invention is to provide a kind of air-strainer that is used for scooter, in order to solve existing problem in the above-mentioned prior art, it is simple in structure, professional component needn't be set in addition, and can the V-shape belt transmission device be cooled off, and can use wet type element, and not have to change for the V-shape belt cooling unit trouble of element with efficient purifying effect.

To achieve these goals, air filter for motor scooter involved in the present invention, in case inside, be provided with motor with the purifying chamber and be disposed at described motor and purify V-shape belt purifying chamber around the chamber, described V-shape belt should purify the below, chamber along described motor with at least a portion in the purifying chamber and extend, by filter for installation described motor is divided into air suction chamber and air discharge chamber with purifying chamber and V-shape belt with the purifying chamber, in described air suction chamber, be provided with air suction inlet, discharge the chamber at described motor with the air of purifying chamber and be provided with first exhaust port that purifies air that communicates with the motor suction system, on the position that is higher than the part that the cooling of described V-shape belt disposes below with the purifying chamber along described motor in the downstream side of the air discharge chamber of purifying chamber, be provided with second exhaust port that purifies air, this exhaust port communicates with the transmission case that the V-shape belt transmission device is housed.

Below, by describing in order to the accompanying drawing of describing an embodiment mode of execution to scooter air-strainer involved in the present invention (below, abbreviate air-strainer as).

Fig. 1 is the summary side elevation that has adopted the scooter of air-strainer of the present invention.

Fig. 2 is the expansion sectional view of Power Component 8.

Fig. 3 (a) is the summary side elevation by the transmission-case cover 14a shown in the car body left side.

Fig. 3 (b) is the A-A sectional view of transmission-case cover 14a among Fig. 3 (a).

Fig. 3 (c) is that the part B of transmission-case cover 14a among Fig. 3 (a) is to view.

Fig. 3 (d) is the C-C sectional view of transmission-case cover 14a among Fig. 3 (a).

Fig. 4 schemes the D at transmission case cover plate 14a rear portion in (2) to view, and has decomposed cooling air venting gas appliance 90 among this figure.

Fig. 5 is the sectional view of E-E among Fig. 4.

Fig. 6 is the sectional view of F-F among Fig. 2.

Fig. 7 (a) is the summary side elevation by the air-strainer 50 shown in the car body left side.

Fig. 7 (b) is vertical summary side elevation of air-strainer 50.

Fig. 8 (a) and (b) be the cutting surface view of the left and right sides case sheet that constitutes air-strainer 50.

Fig. 9 is near the vertical summary side elevation the dustproof room 80 in the car body lid 15.

Figure 10 is near the local section outline top view the dustproof room 80 in the car body lid 15.

Fig. 1 is the summary side elevation that has adopted the scooter of air-strainer of the present invention.

Among the figure, label 1 is a scooter, and label 2 is depicted as vehicle frame.This vehicle frame 2 has head pipe 2a, from the beginning manage 2a to the car body rear, extend the back with the crooked backward down tube 2b who stretches out of general horizontal direction along oblique below, from the rear portion of down tube 2b with general horizontal direction stretch out backward the back, backward crooked along oblique upper stretch out pairing left and right after manage 2c.

Described head pipe 2a rotatably support steering shaft 3, this steering shaft 3 is provided with handle 4 in the top, is fixed with the pairing left and right front fork 6 that is used to support front-wheel 5 in its lower end.

And, on described back pipe 2c, can be supported with the Power Component 8 that trailing wheel 7 is housed by connecting rod means 9 and damping device 10 with swinging up and down.Described Power Component 8 integral body on the crankcase 12 of its motor 11 is provided with transmission case 14, be provided with the V-shape belt formula transmission device 13 that is used for transmitting motor 11 power in the wherein said transmission case 14, promptly so-called rotary (Unitswing) motor to trailing wheel 7.

The vehicle frame 2 of Gou Chenging is all covered by car body lid 15 and seat 16 in the above described manner.Car body covers 15 by protecgulum 15a, leg guard 15b, and foot treadle 15c, lower plate 15d, seat bottom plate 15e, and pairing left and right side cover 15f constitutes.By the top of described protecgulum 15a and leg guard 15b cover head pipe 2a around, cover the front portion of down tube 2c and back pipe 2c by bottom, foot treadle 15c and the lower plate 15d of leg guard 15b, and, cover the rear portion that 2c is managed in the back by seat bottom plate 15e, pairing left and right side cover 15f and seat 16.Between handle 4 and seat 16, form recessed foot-operated platform 17 by foot treadle 15c and lower plate 15d.

The front end of the described Power Component 8 of the scooter 1 of Gou Chenging is in the cylinder side of motor 11 in the Power Component 8 in the above described manner, by bolt air-strainer 50 is arranged.50 pairs of described air-strainer are around it and after being formed on outside air that the dustproof room 80 of foot-operated platform described later 17 inside sucks and purifying, to infeed motor 11 from inhaled air around this, and will send into transmission case from described dustproof room 80 inhaled airs.

Below, will be to air-strainer 50, the Power Component 8 that links to each other with air-strainer 50 and the formation of described dustproof room 80 are described in detail.In addition, in the following description, all around and above-below direction are benchmark with car body 1 all.

Fig. 2 is the expansion sectional view of Power Component 8.

Described motor 11 is towards car body the place ahead and be connected with in the front side of crankcase 12, and it is to have the motor that the level of 2 stroke single-cylinders is put.

In the left side of described crankcase 12, the whole transmission case 14 that is built-in with V-shape belt formula power transmission 13 that is provided with.This transmission case 14 is provided with the casing 14b that is integrally formed in described crankcase 12 left sides and is installed in the case lid 14a in this casing 14b outside, and extends back from the left side of crankcase 12.

The bent axle 20 of described motor 11, its axle head are configured on the left and right directions of car body, the outstanding inside that extends to transmission case 14 of its left part.Extend to the driving side belt pulley 21 that is provided with described V-shape belt formula power transmission 13 on the part of transmission case 14 inside at bent axle 20 outstanding.This driving side belt pulley 21 is made of the fast pulley halfbody 21b that is slidably mounted on the movable half-pulley 21a on the bent axle 20 along axial direction and be fixed on the bent axle 20.Fast pulley halfbody 21b is provided with a plurality of blade 21c at its back side, to send into transmission case 14 whole interior centrifugal blades as importing transmission case 14 interior cooling air w by air-strainer 50.The rotation of described driving side belt pulley 21 drives slave end belt pulley 23 by V-shape belt 22, and drives driven shaft 25 in turn by centrifugal clutch 24, and train of reduction gears 26 and rear wheel drive axle 27 are to drive trailing wheel 7.

On the case lid 14a of transmission case 14, the starting shaft 28 that rotatably support has engine start to use is employed driven shaft 29 with rising.Work the outside and inboard that case lid 14a is stretched out at the two ends employ starting shaft 28 respectively, and be fixed with starting lever 30, and be fixed with fan-shaped actuation gear 31 at inner end in outboard end.Rise and employ driven shaft 29 is bearing in transmission case 14 vertically slidably from case lid 14a inside, be fixed with driven gear 32 in the middle with actuation gear 31 engagements, and being fixed with dog-clutch halfbody 33 at its front end, it can engage separatably with the dog-clutch halfbody 20a that is arranged on bent axle 20 left ends.

In the case lid 14a that constitutes with upper type, be provided with and be used for importing the cooling air ingress pipe 35 of cooling air w and being used for described cooling air is drained into outside cooling air discharger 90 from air-strainer 50.

Fig. 3 (a) is the summary lateral view from the case lid 14a shown in the car body left side, Fig. 3 (b) is along the sectional view shown in the A-A direction of case lid 14a among Fig. 3 (a), Fig. 3 (c) is that the B of case lid 14a in Fig. 3 (a) is to view, Fig. 3 (d) is along the sectional view shown in the C-C direction of case lid 14a among Fig. 3 (a), and Fig. 4 is to view along the D among case lid 14a rear portion Fig. 2 of transmission case among Fig. 2 14, Fig. 5 is the sectional view of E-E direction among Fig. 4, and Fig. 6 is the sectional view shown in the F-F direction among Fig. 2.

As shown in Figure 3, the anterior whole cooling air ingress pipe 35 that forms at the case lid 14a of transmission case 14, described cooling air ingress pipe 35 sucks cooling air w by described centrifugal blade (fast pulley halfbody) 21b that is arranged in the transmission case 14 from lower direction transmission case 14 inside, and at the place, preceding bottom of centrifugal blade 21b, perforate end 35a is tilted to lower direction ground opening.

As shown in Figures 2 and 3, be painted with the crescent part of hatching near the front end of case lid 14a sidewall among Fig. 3 (a)) recessed in being arranged on described centrifugal blade 21b the near-end of blade 21c, the roughly half cycle at its back side along centrifugal blade 21b front side partly forms guide face 36.Because it is adjacent to be fixed on the near-end of blade among described fan-shaped actuation gear 31 and the described centrifugal blade 21b that employs on the starting shaft 28, so the back side can be as the guide face of the roughly half cycle part of centrifugal blade 21b rear side.

Therefore, by form the guide face 36 (31) of centrifugal blade 21b by transmission case 14 and actuation gear 31, just can not spill by the cooling air w that cooling air ingress pipe 35 sucks in the transmission case 14 by air-strainer 50 by centrifugal blade 21b from the side of the case lid 14a of transmission case 14, and can be along the rear of transmission case 14, promptly deliver to the side of slave end belt pulley 21 efficiently, thereby cool off V-shape belt 22 efficiently along V-shape belt 22 directions.

As Fig. 2-shown in Figure 6, the rear portion of case lid 14a is provided with cooling air venting gas appliance 90 in transmission case 14.

This cooling air venting gas appliance 90 is especially shown in Figure 4 and 5, by constituting with the integrally formed downtake pipe 91 of case lid 14a and the second exhaust pipe 92 that can be fixed on the described outlet pipe 91.

The approximate mid-section position opening of the inlet 91a of described downtake pipe 91 on the Vertical direction of transmission case 14,91b is then at transmission case 14 bottom surface openings in its outlet, and described outlet 91b forms the double wall construction that can link second exhaust pipe 92a,

The inlet 92a of second exhaust pipe 92 and outlet 92b are formed on the curved shape exhaust passageway that inside has the offset position relation, after being inserted in described inlet 92 between two double walls that the outlet 91b place of downtake pipe 91 on the transmission case 14 forms, fix with the flank position that bolt 94 forms on transmission case 14.

Equally, the inlet of cooling air venting gas appliance 90 (being the inlet 91a of downtake pipe 91) is provided with the offset position relation with its outlet (being the outlet 92b of second exhaust pipe 92), owing to formed the curved shape exhaust passageway in whole inside, thereby, for example can have tire produces when preventing to walk owing to the rainy day water etc. and cause muddy water to invade effect in the transmission case.

As mentioned above, because the outlet 91b of downtake pipe 91 has double wall construction, and between described two double walls, insert second exhaust pipe 92 inlet 92a, therefore when assembling, because constituting the linking portion of two double walls that export 91b and the wall that limits second exhaust pipe 92 inlet 92a, downtake pipe 91 adopt the labyrinth to construct, so have the effect that to prevent that sealing is invaded by the linking portion of downtake pipe 91 and second exhaust pipe 92.

As shown in Figure 4, in the place ahead of the described downtake pipe 91 of transmission case 14,, be provided with weep hole 95 to cooling air venting gas appliance 90 (second exhaust pipe 92) perforate in order to discharge the water in the transmission case 14.As shown in Figure 6, under this set state of second exhaust pipe 92, because cooling air venting gas appliance 90 has the hole below described weep hole 95, thereby cooling air venting gas appliance 90 (promptly, second exhaust pipe 92) wall has the function as the protection walls of the weep hole 95 relative with described weep hole 95, to prevent that under steam muddy water etc. is from these weep hole 95 reverse entering the transmission case 14.

Below, the air-strainer 50 that is arranged on transmission case 14 the place aheads is described.

Fig. 7 (a) is the summary side elevation by the air-strainer 50 shown in the car body left side.Fig. 7 (b) is the vertical sectional view of summary of air-strainer 50.Fig. 8 (a) reaches and (b) is respectively by the figure shown in the left and right side case sheet parting plane that constitutes air-strainer 50.

As shown in Figure 7 and Figure 8, air-strainer 50 by two case sheets 51,52 of left and right side (below, for easy, the case sheet that will be positioned at the car body right side is called right side case sheet 51, and the case sheet that will be positioned on the left of the car body is called left side case sheet 52.), reaching the wet type element 53 that when assembling, is clipped in 51,52 of two casees sheets and constitute, the preceding side lower part in described two casees sheets 51,52 outsides is provided with a plurality of coolings and prevents Stone Shock sheet 54.

As shown in Figure 8, on each case sheet 51 and 52, be equipped with next door 57, be used to divide first purifying chamber 55 and second purifying chamber 56 in the air-strainer 50, wherein said first used for decontamination chamber is in purifying the air of supplying with to motor, and described second used for decontamination chamber is in purifying the cooling air w that supplies with to transmission case 14.Described second purifying chamber 56 forms elongated passage around first purifying chamber 55 with the bottom around the place ahead, below and the rear of first purifying chamber 55.

Shown in Fig. 8 (a), on the upper wall 51a of right side case sheet 51, be provided with first suction pipe 60 that is communicated with outside and first purifying chamber 55, and be communicated with second suction pipe 59 of outside and second purifying chamber 56, described first suction pipe 60 is by guiding element 58 supportings.In order to adjust the air-breathing fluctuation of motor 11, this suction pipe should stretch into the inside of first purifying chamber 55.

Shown in Fig. 8 (b), on the rear wall 52b of left side case sheet 52, be provided with the air-breathing Carburetor 11a that fastens that is located at motor 11 and link to each other cleaned air passes is sent into first supplying pipe 61 of motor 11 by first purifying chamber 55.And on the upper wall 52a of left side case sheet 52, being provided with links to each other with the cooling air ingress pipe 35 of transmission case 14 sends into the second interior supplying pipe 62 of transmission case 14 with the cooling air w after will purifying by second purifying chamber 56.Shown in Fig. 8 (b), described second supplying pipe 62 is in the top position place's perforate by 55 bottoms, first purifying chamber in second purifying chamber 56, and in covering second purifying chamber 56 part of the rear lower portion of first purifying chamber 55, along the oblique upper perforate.Therefore, second purifying chamber 56 is formed with passage, this passage can suck air from the place ahead, air-strainer 50 top, and make its place ahead of passing through first purifying chamber 55 and below, after then rising to the somewhere, top, cooling air w is sent into the transmission case 14 that is positioned at air-strainer 50 rears along oblique upper by 55 rears, first purifying chamber.

As shown in Figure 7, between right side case sheet 51 with above structure and left side case sheet 52, being linked with closed pattern by bolt 65 has a wet type element 53 and trellis supporting frame 53 ', wherein said supporting frame 53 ' to have the shape roughly the same with described wet type element 53.Described element 53 is to expand in the whole zone, tabular inside at the air-strainer shown in the side.Therefore, air-strainer 50 inside after assembling, its first purifying chamber 55 and second purifying chamber 56 mark off air by described element 53 and import chamber 55a, 56a and air supply chamber 55b, 56b, the result, import each purifying chamber's 55,56 hollow conductance 55a that enters the room by first and second suction pipes 60,59 that are arranged on right side case sheet 51, the air of 56a, after purifying, by air supply chamber 55b in each purifying chamber 55,56 by described wet type element 53,56b, and first and second supplying pipes 61 by being arranged on left side case sheet 52 and 62 and be conducted to motor 11 and transmission case 14 respectively.

In addition, when speckling with too much oil and air on the wet type element 53 when the wet type element 53, oil disperses sometimes and enters in the air, does not infeed the problem that contains oil in the air of motor 11 but can not be created in by first purifying chamber 55.In addition, as previously mentioned, in second purifying chamber 56, because after in a single day rising by 55 belows, first purifying chamber, just discharge cooling air w along oblique upper, thereby when cooling air w flowed above lower direction, heavy oil fell to being stuck in 56 bottom surfaces, second purifying chamber by its weight and can not enter in the transmission case 14.

Among Fig. 7 and Fig. 8 and not shown, on the diapire 52c of case lid 52, be formed with drain boles, so that be trapped in the oil in the air supply chamber 56b in second purifying chamber 56 drains into air-strainer 50 by the escape pipe 63 that is connected with this drain boles outside.

On second suction pipe 59 of the air-strainer 50 of above-mentioned formation, be connected with air leading-in conduit 70, be used for to transmission case 14 internal feed cooling airs the air of second purifying chamber 56 (that is, by).By this air leading-in conduit 70, from the dustproof room 80 suction outside airs of foot-operated platform 17 inside that are formed at car body lid 15.

Above-mentioned air leading-in conduit 70 is made of rigidity upstream tube 71 and flexible downstream tube 72, and above-mentioned upstream tube 71 should stretch into described dustproof room 80 inside.

Fig. 9 and Figure 10 are near the vertical sectional view of summary the dustproof room 80 of car body lid 15 and the summary top view of local bottom surface.

As shown in Figure 9, the foot-operated platform 17 of car body lid 15 is formed with the dustproof room 80 that is divided into by front and back dividing plate 81 and 82 in the space that is surrounded by foot treadle 15c and lower cover 15c.

Described dividing plate 81 and 82 is made by flexible vinyl chloride sheet, and the top of these dividing plates utilizes suitable devices such as bolt to be fixed on the flange 83,85 that is arranged on the foot treadle 15c, and with the state support of downward suspention on foot treadle 15c.

The upstream tube 71 of described air leading-in conduit 70 utilizes the carriage 73 of dustproof room 80 inside to be fixed on the pipe 2c of back.

In dustproof room 80 with above structure, owing to enter the air that car body covers 15 inside from the tubaeform slit (not shown) and the gap around steering shaft 3 that are arranged on the protecgulum 15, be by the space around the steering shaft 3 that forms by protecgulum 15a and leg guard 15b, the down tube 2b that forms by foot treadle 15c and lower cover 15d, space around the pipe 2c of back, enter from the gap between dividing plate 82 and back pipe 2c etc., so can suck air from the car body top, thereby the air preferably that does not contain under steam the sand and dust that produced by the road surface is entered in second purifying chamber 56 of air-strainer 50, promptly supply with in the transmission case 14.

Air-strainer 50 in the foregoing description has the structure that is only extracted air in second purifying chamber 56 by dustproof room 80, but should not be limited to present embodiment, also air leading-in conduit can be set in first suction pipe 60 of first purifying chamber 56, the air in first purifying chamber 56 also can be extracted by dustproof room 80.

Air-strainer 50 in the present embodiment is to cover second purifying chamber 56, the mode of 55 the place aheads, first purifying chamber, below and rear lower portion disposes, but the structure of described second purifying chamber 56 should not be limited to present embodiment, the part of at least the first purifying chamber 55 should be covered in the mode of execution of other any structure, air is before discharging from air-strainer, in case when flowing above lower direction, heavy wet goods should be able to fall.

The air-strainer 50 of present embodiment filters by the air of 53 pairs first purifying chambers 55 of a wet type element and second purifying chamber 56, but should not be limited to present embodiment, and parts are cut apart.

The air-strainer 50 of present embodiment is provided with each corresponding independent suction pipe 60 with first purifying chamber 55 and second purifying chamber 56,59, but should not be limited to present embodiment, but the perforate that first purifying chamber 55 and the 56 interior air leading-in conduit 55a of second purifying chamber and 56a are communicated with is set, on the next door 57 so that can suck air from arbitrary purifying chamber.

By above explanation, the air-strainer that is used for the scooter relevant with the present invention, owing to be provided with motor in inside with purifying chamber and V-shape belt purifying chamber, thereby can cool off and the dust guard of the air cleaner etc. of special use needn't be set in addition V-shape belt.

The air-strainer that is used for the scooter relevant with the present invention, owing to make V-shape belt be configured in described motor with around the purifying chamber with the purifying chamber, wherein should make at least a portion V-shape belt use the purifying chamber along the below extension of motor with the purifying chamber, therefore the described V-shape belt by the constant suction air of energy can end by the noise of the fluctuation suction motor that air produced with the purifying chamber with the purifying chamber.

In the air-strainer of scooter of the present invention, use the downstream side, purifying chamber being higher than V-shape belt, be provided with V-shape belt with the exhaust port that purifies air in the purifying chamber along motor with the position of the part of purifying chamber's direction configuration, because the V-shape belt tempering air is after flowing from the lower direction top, flow in the transmission case by the exhaust port that purifies air, for example heavy wet goods can be when air flows above lower direction, rely on gravity fall and can not enter transmission case, so can use wet type element to be effective with the filtrating equipment in the purifying chamber with high purifying effect as being used for V-shape belt.Owing to can use as being used for the wet type element of V-shape belt with the filtrating equipment of purifying chamber, thereby the filtrating equipment of motor usefulness purifying chamber and V-shape belt usefulness purifying chamber can be identical, thereby help making and reducing cost, for any user, needn't regularly change the loaded down with trivial details operation of V-shape belt with the purification chamber components.

Claims (1)

1. air filter for motor scooter is characterized in that:

In case inside,

Being provided with motor reaches with the purifying chamber

Be disposed at described motor and purify V-shape belt cooling purifying chamber on every side, chamber, described V-shape belt cooling should be extended below described motor purifies the chamber with at least a portion in the purifying chamber,

By filter for installation described motor is divided into air suction chamber and air discharge chamber with purifying chamber and V-shape belt cooling respectively with the purifying chamber,

In described air suction chamber, be provided with air suction inlet,

Discharge the chamber at described motor with the air of purifying chamber and be provided with first exhaust port that purifies air that communicates with the motor suction system,

On the position of the part that in being higher than the downstream side of described V-shape belt cooling, along described motor, disposes below with the purifying chamber with the air discharge chamber of purifying chamber, be provided with second exhaust port that purifies air, this exhaust port should communicate with the transmission case that the V-shape belt transmission device is housed.

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