JP3786490B2 - Scooter type vehicle air cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an air cleaner used in a scooter type vehicle.
[0002]
[Prior art]
Conventionally, a power unit integrated with an engine, a transmission case with a built-in V-belt transmission device, and one or two rear wheels attached to the rear part of the transmission case, which are used in vehicles such as scooters. In order to improve the durability of the power transmission V-belt by cooling the V-belt transmission.
As a cooling method for the above-described V-belt transmission device, a method of lowering the ambient temperature in the transmission case by stirring the air in the transmission case in which the power transmission V-belt is housed, or introducing outside air into the transmission case And a method for lowering the ambient temperature in the transmission case.
As the latter external air introduction type cooling device, there is specifically a device of the type described in JP-A-60-185632. In this cooling device, a cooling fan is integrally provided on the drive shaft side pulley of the V-belt transmission device, an opening is provided at a position facing the fan of the transmission case, and outside air is introduced into the transmission case from the opening. It is configured.
[0003]
[Problems to be solved by the invention]
However, the conventional cooling device described above has the following drawbacks.
That is, the former agitating type cooling device is configured to agitate the air in the transmission case to lower the ambient temperature, so that the transmission case can be hermetically sealed and there is a risk of intrusion of dust and the like from the outside. There is an advantage that there is no cooling, but there is a problem that the cooling capacity is low.
In addition, the latter outside air introduction type cooling device is configured to introduce the outside air into the transmission case to lower the ambient temperature in the transmission case, so there is an advantage that the cooling capacity is high. Must be prevented from entering the inside of the transmission case together with outside air, for example, as described in JP-A-60-185632, an element is provided at the outside air inlet, and the outside air inlet is further provided. There is a problem in that it is disadvantageous in terms of manufacturing cost because it is necessary to provide dustproof means such as covering with a cover in the transmission case, or to provide a separate air cleaner for cooling the V-belt. In addition, as described above, if an element is provided at the outside air inlet or a dedicated air cleaner is provided separately, the user is forced to perform the troublesome work of periodically replacing the element only for the cooling device. become. Furthermore, when oil adheres to the V-belt, slippage occurs between the pulley and the V-belt, and the transmission capacity is significantly reduced. Therefore, the conventional structure cannot use a wet element having a high cleaning effect for cooling the V-belt. There is also a problem.
The present invention solves the above-mentioned conventional problems, has a simple structure, does not require a separate dedicated air cleaner, can cool the V-belt transmission device, and uses a wet element with high cleaning efficiency. It is another object of the present invention to provide a scooter type vehicle air cleaner that does not require the troublesome work of exchanging elements only for the V-belt transmission device.
[0004]
[Means for Solving the Problems]
In order to achieve the above-described object, an air cleaner for a scooter type vehicle according to the present invention includes an engine clean room and an engine clean room extending at least partially along the lower side of the engine clean room. A clean room for cooling the V belt disposed around the clean room, and the clean room for cooling the engine and the clean room for cooling the V belt are each divided into an air intake chamber and an air discharge chamber by filter means, and the air An air intake port is provided in the intake chamber, a first clean air discharge port connected to the intake system of the engine is provided in the air discharge chamber of the engine clean chamber, and downstream of the air discharge chamber of the V belt cooling clean chamber A second clean air discharge port connected to a transmission case for housing the V-belt transmission device is provided at a position higher than a portion arranged along the lower side of the engine clean chamber on the side. Than it is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a scooter type vehicle air cleaner (hereinafter simply referred to as an air cleaner) according to the present invention will be described below with reference to an embodiment shown in the accompanying drawings.
[0006]
(Brief description of the entire scooter type vehicle)
FIG. 1 is a schematic side view of a scooter type motorcycle employing the air cleaner of the present invention.
In the figure, reference numeral 1 denotes a scooter type motorcycle, and reference numeral 2 denotes a body frame. The vehicle body frame 2 includes a head pipe 2a, a single down tube 2b that extends obliquely downward from the head pipe 2a toward the rear of the vehicle, and then bends and extends rearward substantially horizontally, and a rear portion of the down tube 2b. It consists of a pair of left and right back tubes 2c that extend rearward substantially horizontally and then bend and extend obliquely upward toward the rear.
The head pipe 2a rotatably supports a steering shaft 3. The steering shaft 3 is provided with a handle 4 at its upper end and a pair of left and right front forks 6 that support the front wheel 5 at its lower end. ing.
A power unit 8 having a rear wheel 7 is supported on the back tube 2c through a link means 9 and a buffer unit 10 so as to be swingable up and down. This power unit 8 is a so-called unit swing type engine in which a transmission case 14 incorporating a V-belt type power transmission device 13 for transmitting the power of the engine 11 to the rear wheel 7 is provided integrally with the crankcase 12 of the engine 11. is there.
The vehicle body frame 2 configured as described above is entirely covered with a vehicle body cover 15 and a seat 16. The vehicle body cover 15 includes a front cover 15a, a leg shield 15b, a foot board 15c, an under cover 15d, a seat lower cover 15e, and a pair of left and right side covers 15f. The lower part of the leg shield 15b, the footboard 15c, and the under cover 15d cover the front part of the down tube 2b and the back tube 2c. Further, the lower seat cover 15e, the pair of left and right side covers 15f, and the seat 16 are covered. The rear portion of the back tube 2c is covered, and the footboard 15 is formed between the handle 4 and the seat 16 by the foot board 15c and the under cover 15d.
[0007]
At the front end of the power unit 8 of the scooter type vehicle 1 configured as described above, an air cleaner 50 is fixed with a bolt so as to be positioned on the side of the cylinder of the engine 11 of the power unit 8. The air cleaner 50 sucks outside air from the dust-proof chamber 80 formed in the periphery and inside the footrest 17 described later, cleans the sucked outside air, and then sucks the air sucked from the surroundings into the engine 11 and the above-described air cleaner 50. Air sucked from the dustproof chamber 80 is supplied to the transmission case.
Hereinafter, the configuration of the air cleaner 50, the power unit 8 related to the air cleaner 50, and the dustproof chamber 60 will be described in detail. In the following description, the front and rear, left and right, and up and down directions are all based on the vehicle body 1.
[0008]
(About the configuration of the power unit)
FIG. 2 is a developed cross-sectional view of the power unit 8.
The engine 11 is a two-cycle single-cylinder horizontal engine in which a cylinder is continuously connected to the front surface of the crankcase 12 toward the front of the vehicle body.
On the left side of the crankcase 12, a transmission case 14 incorporating a V-belt type power transmission device 13 is integrally provided. The transmission case 14 includes a case main body 14b integrally formed on the left side of the crankcase 12 and a case cover 14a attached to the outer side of the case main body 14b. It is growing.
The crankshaft 20 of the engine 11 is disposed so that the shaft end is positioned in the left-right direction of the vehicle body, and the left side portion extends to the inside of the transmission case 14. A drive-side pulley 21 of the V-belt type power transmission device 13 is provided at a portion of the crankshaft 20 that protrudes to the inside of the transmission case 14. The driving pulley 21 includes a movable pulley half 21 a that is slidably mounted on the crankshaft 20 in the axial direction, and a fixed pulley half 21 b that is fixed to the crankshaft 20. The fixed pulley half 21 b is provided with a plurality of fins 21 c on the back surface thereof, and also functions as a centrifugal fan that sends the cooling air w introduced into the transmission case 14 through the air cleaner 50 to the entire transmission case 14. The rotation of the driving pulley 21 is transmitted to the driven pulley 23 via the V belt 22, and is transmitted to the driven shaft 25, the reduction gear group 26, and the rear wheel driving shaft 27 via the centrifugal clutch 24 in this order. Is driven.
A start kick shaft 28 and a start driven shaft 29 are rotatably supported on the case cover 14a of the transmission case 14. Both ends of the start kick shaft 28 protrude outside and inside the case cover 14a, the start kick bar 30 is provided at the outer end, and the fan-like drive gear 31 is provided at the inner end. It is fixed. The starting driven shaft 29 is supported inside the transmission case 14 from the case cover 14a and is slidable in the axial direction, and a driven gear 32 meshing with the drive gear 31 is fixed to an intermediate portion thereof. Further, a dock clutch half 33 that is detachably fitted to the dock clutch half 20a provided at the left end of the crankshaft 20 is fixed to the front end portion thereof.
[0009]
(About the structure of the case cover 14a)
The case cover 14a configured as described above is provided with a cooling air introduction pipe 35 for introducing the cooling air w from the air cleaner 50 and a cooling air exhaust means 90 for exhausting the cooling air w to the outside.
3A is a schematic side view of the case cover 14a viewed from the left side of the vehicle body, FIG. 3B is a cross-sectional view of the case cover 14a taken along line AA in FIG. 3A, and FIG. FIG. 3D is a cross-sectional view of the case cover 14a in FIG. 4A, and FIG. 4 is a rear view 2 of the case cover 14a of the transmission case. FIG. 5 is a cross-sectional view taken along line EE in FIG. 4, and FIG. 6 is a cross-sectional view taken along line FF in FIG. 2.
As shown in FIG. 3, a cooling air introduction pipe 35 is integrally formed at the front portion of the case cover 14 a of the transmission case 14. The air introduction pipe 35 is arranged at the front lower portion of the centrifugal fan 21b so that the cooling air w is sucked into the transmission case 14 from below by the centrifugal fan (fixed pulley half) 21b provided inside the transmission case 14. In this position, the opening end 35a is inclined so as to open obliquely forward and downward.
As shown in FIGS. 2 and 3 (b), the vicinity of the front end portion of the side wall of the case cover 14a (a crescent-shaped portion hatched in FIG. 3 (a)) is a fin 21c provided on the centrifugal fan 21b. The guide surface 36 is formed on the back surface thereof along the substantially half-circumferential portion of the front side of the centrifugal fan 21b. Further, since the fan-shaped drive gear 31 fixed to the starting kick shaft 28 is also adjacent to the fin of the centrifugal fan 21b, the back surface thereof is a guide surface of a substantially semicircular portion on the rear side of the centrifugal fan 21b. Function as.
Thus, by forming the guide surface 36 (31) of the centrifugal fan 21b with the transmission case 14 and the drive gear 31, the centrifugal fan 21b is sucked into the transmission case 14 from the air cleaner 50 via the cooling air introduction pipe 35. The cooling air w can be efficiently sent to the rear side of the transmission case 14, that is, along the V belt 22 to the driven pulley 21 side without escaping to the case cover 14 a side of the transmission case 14. The belt 22 can be efficiently cooled.
As shown in FIGS. 2 to 6, cooling air exhaust means 90 is provided at the rear of the case cover 14 a in the transmission case 14.
As shown in FIGS. 4 and 5, the cooling air exhaust means 90 includes a first exhaust pipe 91 formed integrally with the case cover 14 a and a second exhaust pipe 92 that can be attached to the first exhaust pipe 91. It consists of.
The first exhaust pipe 91 has an inlet 91a opened at a substantially middle portion in the vertical direction of the transmission case 14, and an outlet 91b opened at the bottom of the transmission case 14. The outlet 91b It has a double wall structure so that the tube 92 can be connected.
The second exhaust pipe 92 has a crank-shaped exhaust passage formed therein so that the inlet 92a and the outlet 92b are offset from each other, and the inlet 92a side is connected to the first exhaust of the transmission case 14. After being inserted between the double walls formed at the outlet 91 b of the pipe 91, it is fixed with bolts 94 at the position of the rib formed on the transmission case 14.
As a result, the cooling air exhaust means 90 has a positional relationship in which the inlet (that is, the inlet 91a of the first exhaust pipe 91) and the outlet (that is, the outlet 92b of the second exhaust pipe 92) are offset. As a crank-shaped exhaust passage is formed, it is possible to effectively prevent, for example, intrusion of muddy water or the like into a transmission case that may occur in water splashing of a tire when traveling in rainy weather. .
Further, as described above, the outlet 91b of the first exhaust pipe 91 has a double wall structure, and the inlet 92a of the second exhaust pipe 92 is inserted between the double walls. The connecting portion of the first exhaust pipe 91 that forms the outlet 91b and the wall that defines the inlet 92a of the second exhaust pipe 92 have a labyrinth structure, and the first exhaust pipe 91 and the second exhaust pipe 92 are connected to each other. Intrusion of water from the connecting portion can be effectively prevented.
Further, as shown in FIG. 4, in front of the first exhaust pipe 91 in the transmission case 14, in order to drain the water in the transmission case 14, the cooling wind exhaust means 90 (second exhaust pipe 92) is directed. As shown in FIG. 6, in the state where the second exhaust pipe 92 is attached, the cooling air exhaust means 90 opens at a position below the drain hole 95, as shown in FIG. The wall surface of the cooling air exhaust means 90 (that is, the second exhaust pipe 92) faces the drain hole 95 and functions as a shielding wall for the drain hole 95, and muddy water or the like from the drain hole 95 to the transmission case 14 during traveling or the like. Reverse entry is prevented.
[0010]
(About the structure of the air cleaner)
Next, the air cleaner 50 provided in front of the transmission case 14 will be described.
7A is a schematic side view of the air cleaner 50 as viewed from the left side of the vehicle body, FIG. 7B is a schematic longitudinal sectional view of the air cleaner 50, and FIGS. 8A and 8B are left and right views constituting the air cleaner 50, respectively. The figure which looked at the case piece from the division surface is shown.
As shown in FIGS. 7 and 8, the air cleaner 50 is divided into two case pieces 51 and 52 (hereinafter, for convenience, the case piece located on the right side of the vehicle body is the right case piece 51 and the case piece located on the left side of the vehicle body is shown. And a wet element 53 sandwiched between the two case pieces 51 and 52 at the time of assembly. The front lower portion of the outer surface of the two case pieces 51 and 52 has a cooling portion. In addition, a plurality of stoning prevention fins 54 are provided.
As shown in FIG. 8, each case piece 51 and 52 is cleaned with a first cleaning chamber 55 for cleaning the air supplied to the engine inside the air cleaner 50 and the cooling air w supplied to the transmission case 14. A partition wall 57 is provided to divide into a second cleaning chamber 56 for the purpose. The second cleaning chamber 56 is formed in the shape of an elongated passage along the periphery of the first cleaning chamber 55 so as to cover the front, lower and rear lower portions of the first cleaning chamber 55.
8A, the upper wall 51a of the right case piece 51 communicates the first suction pipe 60 that communicates the outside with the first clean chamber 55, and the outside and the second clean chamber 56. The first suction pipe 60 is supported by a guide member 58 and extends to the inside of the first clean chamber 55 in order to adjust the intake air pulsation of the engine 11.
Further, as shown in FIG. 8B, the upper wall 52a of the left case piece 52 is connected to a carburetor 11a provided in the intake system of the engine 11 so that the air from the first clean chamber 55 to the engine 11 is cleaned. The first supply pipe 61 is provided for supplying the cooling air, and the rear wall 52b of the left case piece 52 is connected to the cooling air introduction pipe 35 of the transmission case 14 and is cooled after the cleaning from the second cleaning chamber 56. A second supply pipe 62 for supplying the wind w into the transmission case 14 is provided. As shown in FIG. 8 (b), the second supply pipe 62 is opened in the second cleaning chamber 56 so as to open at a position above a portion passing through the lower portion of the first cleaning chamber 55 in the second cleaning chamber 56. A portion covering the lower rear portion of the first cleaning chamber 55 is provided so as to open obliquely upward, whereby the second cleaning chamber 56 sucks air from the upper front of the air cleaner 50, and the front of the first cleaning chamber 55 and A passage for supplying the cooling air w obliquely upward is formed in the transmission case 14 at the rear of the air cleaner 50 after passing through the lower part and then rising slightly upward so as to pass through the rear of the first cleaning chamber 55.
As shown in FIG. 7B, the right case piece 51 and the left case piece 52 configured as described above have a lattice shape having substantially the same shape as the one wet element 53 and the element 53 therebetween. The support frame 53 ′ is sandwiched and connected with a bolt 65 hermetically. The element 53 has a plate shape and extends over the entire interior of the air cleaner 50 in a side view. Thereby, in the assembled air cleaner 50, the first cleaning chamber 55 and the second cleaning chamber 56 are divided into the air introduction chambers 55a, 56a and the air supply chambers 55b, 56b by the element 53, and as a result. The air introduced into the air introduction chambers 55a and 56a of the clean chambers 55 and 56 from the first and second suction pipes 60 and 59 provided in the right case piece 51 passes through the wet element 53 and is purified. Then, the air passes through the air supply chambers 55b and 56b of the respective clean chambers 55 and 56, and is supplied to the engine 11 and the transmission case 14 via the first and second supply pipes 61 and 62 provided in the left case piece 52, respectively. Is done.
If the wet element 53 is excessively soaked with oil, when the air passes through the wet element 53, the oil may be scattered in the air, but the air supplied to the engine 11 passing through the first clean chamber 55. There is no problem even if oil is contained in the second cleaning chamber 56, and as described above, the second cleaning chamber 56 once passes below the first cleaning chamber 55 and then rises upward. Since the cooling air w is discharged, the oil having a high specific gravity falls downward by its weight when the cooling air w flows from the lower side to the upper side, and accumulates on the bottom surface of the second cleaning chamber 56, and enters the transmission case 14. Never get in.
Although not shown in FIGS. 7 and 8, a drain hole is formed in the bottom wall 52 c of the case cover 52, and the oil accumulated in the air supply chamber 56 b of the second clean chamber 56 enters the drain hole. It is discharged to the outside of the air cleaner 50 by the connected drain pipe 63.
The air suction pipe 70 is connected to the second suction pipe 59 of the air cleaner 50 configured as described above, and the cooling air w (that is, the air passing through the second cleaning chamber 56) supplied to the inside of the transmission case 14. ) Is configured to suck in outside air from the dustproof chamber 80 formed inside the footrest 17 of the vehicle body cover 15 through the air introduction pipe 70.
The air introduction pipe 70 includes a rigid upstream pipe 71 and a flexible downstream pipe 72, and the upstream pipe 71 penetrates into the dustproof chamber 80.
[0011]
(Dustproof room configuration)
FIGS. 9 and 10 are a schematic longitudinal sectional view and a partial sectional schematic top view of the vicinity of the dustproof chamber 80 of the vehicle body cover 15.
As shown in FIG. 9, a dust-proof chamber 80 partitioned by front and rear partition plates 81 and 82 is formed in a space surrounded by the foot board 15 c and the under cover 15 d in the footrest 17 of the vehicle body cover 15. .
The partition plates 81 and 82 are made of a flexible vinyl chloride plate, and only upper portions thereof are fixed to ribs 83 and 85 provided on the foot board 15c by appropriate means such as bolts and are suspended from the foot board 15c. It is supported in the state where it was done.
The upstream pipe 71 of the air introduction pipe 70 is fixed to the back tube 2 c by a bracket 73 inside the dustproof chamber 80.
The dust chamber 80 configured as described above has a horn slit (not shown) provided above the front cover 15a, air entering the inside of the vehicle body cover 15 through a gap around the steering shaft 3, and the like. Through the space around the steering shaft 3 formed by the front cover 15a and the leg shield 15b, the space around the down tube 2b and the back tube 2c formed by the leg shield 15b, the footboard 15c and the under cover 15d. Since the air enters from the gap between the partition plate 82 and the back tube 2c and the like, air can be sucked from above the vehicle body, and relatively clean air that does not contain dust such as dust generated from the road surface during traveling is supplied to the second cleaner of the air cleaner 50. It can be supplied to the chamber 56, that is, to the transmission case 14.
[0012]
(Other application examples)
The air cleaner 50 of the above-described embodiment is configured to suck only the air in the second clean chamber 56 from the dust-proof chamber 80, but this is not limited to this embodiment, and the air cleaner 50 of the first clean chamber 56 is not limited to this embodiment. The first suction pipe 60 may also be provided with an air introduction pipe so that the air in the first clean chamber 56 is also sucked from the dust-proof chamber 80.
In the air cleaner 50 of this embodiment, the second cleaning chamber 56 is disposed so as to cover the front, lower, and rear lower portions of the first cleaning chamber 55. Without being limited to the embodiment, at least a part of the first cleaning chamber 55 is covered, and air flows from the lower side to the upper side once before being discharged from the air cleaner, so that oil with high specific gravity or the like is dropped downward. Any configuration can be used as long as it can be configured.
Furthermore, the air cleaner 50 of the present embodiment is configured to filter the air in the first cleaning chamber 55 and the second cleaning chamber 56 with one wet element 53, but this is limited to this embodiment. For example, the element may be divided.
Furthermore, the air cleaner 50 of the present embodiment is provided with the suction pipes 60 and 59 independent of the first cleaning chamber 55 and the second cleaning chamber 56, but this is not limited to this embodiment. Alternatively, the partition wall 57 may be provided with an opening for communicating the air introduction chambers 55a and 56a of the first cleaning chamber 55 and the second cleaning chamber 56, and air may be sucked from one of the cleaning chambers.
[0013]
【The invention's effect】
As described above, the scooter type vehicle air cleaner according to the present invention includes the engine clean chamber and the V belt cooling clean chamber inside, so that a dedicated air cleaner or the like is separately provided for cooling the V belt. There is an effect that it is not necessary to provide a dustproof means.
In the scooter type vehicle air cleaner according to the present invention, the V-belt cooling clean room is disposed around the engine clean room so that at least a part thereof extends along the lower side of the engine clean room. As a result, the noise in the engine clean chamber generated by pulsating air can be blocked by the V belt cooling clean chamber that regularly sucks air.
Furthermore, the scooter type vehicle air cleaner according to the present invention has a clean air discharge port of the V-belt cooling clean chamber disposed below the engine clean chamber downstream of the V-belt cooling clean chamber. Since it is provided at a high position and flows into the transmission case through the clean air discharge port after flowing the air for cooling the V belt from below to above, for example, oil with high specific gravity Does not fall down by its weight when it flows from the bottom to the top and does not enter the transmission case, so it is possible to use a wet element with high cleaning efficiency as a filter means for the V-belt cooling clean chamber Has the effect of becoming. In addition, since it becomes possible to use a wet element as a filter means for the V-belt cooling clean chamber, it becomes possible to share the filter means for the engine clean chamber and the V-belt cooling clean chamber, This is advantageous in terms of manufacturing and price, and moreover, there is an effect that it is not necessary to force the user to regularly replace the element only for the cleaning room for cooling the V belt.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a scooter type motorcycle employing an air cleaner of the present invention.
FIG. 2 is a developed cross-sectional view of a power unit 8;
FIG. 3A is a schematic side view of the case cover 14a viewed from the left side of the vehicle body.
(B) is AA sectional drawing of the case cover 14a of Fig.3 (a),
(C) is a partial B view of the case cover 14a in FIG.
(D) is CC sectional drawing of the case cover 14a in Fig.3 (a).
FIG. 4 is a view as viewed from D in FIG. 2 of the rear portion of the case cover piece 14a of the transmission case. In this figure, the cooling air exhaust means 90 is disassembled.
FIG. 5 is a cross-sectional view taken along line EE in FIG.
6 is a cross-sectional view taken along line FF in FIG.
FIG. 7A is a schematic side view of the air cleaner 50 as viewed from the left side of the vehicle body.
(B) is a schematic longitudinal sectional view of the air cleaner 50.
FIGS. 8A and 8B are views of the left and right case pieces constituting the air cleaner 50 as viewed from the dividing surface.
9 is a schematic longitudinal sectional view of the vicinity of the dustproof chamber 80 of the vehicle body cover 15. FIG.
10 is a partial cross-sectional schematic top view of the vicinity of the dustproof chamber 80 of the vehicle body cover 15. FIG.
[Explanation of symbols]
1 Scooter type vehicle
2 Body frame
2a Headpipe
2b Down tube
2c Back tube
3 Steering shaft
4 Handle
5 Front wheels
6 Front fork
7 Rear wheel
8 Power unit
9 Link means
10 Buffer unit
11 engine
11a Carburetor
12 Crankcase
13 V-belt type power transmission device
14 Transmission case
14a Case cover
14b Case body
15 Body cover
15a Front cover
15b leg shield
15c footboard
15d under cover
15e Under seat cover
15f Side cover (a pair of left and right)
16 sheets
17 Footrest
20 Crankshaft
20a Dock clutch half
21 Drive pulley
21a Movable pulley half
21b Fixed pulley half (centrifugal fan)
22 V belt
23 Driven pulley
24 Centrifugal clutch
25 Driven shaft
26 Reduction gear group
27 Rear wheel drive shaft
28 Starting drive shaft
29 Follower shaft for starting
30 kick bar for starting
31 Drive gear (guide surface)
32 fixed gear
33 Dock clutch half
35 Cooling air introduction pipe
36 Guide surface
50 Air cleaner
51 Right case piece
51a Upper wall
52 Left case piece
52a upper wall
52b rear wall
53 Wet element
54 Cooling and stoning prevention fins
55 First clean room (for engine)
55a Air introduction chamber
55b Air supply chamber
56 Second clean room (for V belt)
56a Air introduction chamber
56b Air supply chamber
57 Bulkhead
58 Guide member
59 Second suction pipe (for V-belt)
60 First suction pipe (for engine)
61 First supply pipe (for engine)
62 Second supply pipe (for V-belt)
63 Drain pipe
65 volts
70 Air introduction pipe
71 Upstream pipe
72 Downstream pipe
80 Dustproof room
81 partition plate
82 Partition plate
90 Cooling air exhaust means
91 First exhaust pipe
91a entrance
91b Exit
92 Second exhaust pipe
92a entrance
92b exit
95 Drainage hole

Claims (1)

Inside the case,
An engine clean room,
A V-belt cooling cleaning chamber disposed around the engine cleaning chamber so that at least a part thereof extends along the lower side of the engine cleaning chamber;
The engine cleaning chamber and the V-belt cooling cleaning chamber are each divided into an air intake chamber and an air discharge chamber by filter means,
An air intake is provided in the air intake chamber,
A first clean air discharge port connected to the intake system of the engine is provided in the air discharge chamber of the engine clean chamber,
A second belt connected to a transmission case that houses the V-belt transmission device at a position higher than a portion disposed along the lower side of the engine clean chamber on the downstream side of the air discharge chamber of the V belt cooling clean chamber. A scooter type vehicle air cleaner characterized by providing a clean air discharge port.

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