WO2009116226A1 - 鞍乗り型車両の無段変速機冷却ダクト配置構造 - Google Patents
鞍乗り型車両の無段変速機冷却ダクト配置構造 Download PDFInfo
- Publication number
- WO2009116226A1 WO2009116226A1 PCT/JP2009/000619 JP2009000619W WO2009116226A1 WO 2009116226 A1 WO2009116226 A1 WO 2009116226A1 JP 2009000619 W JP2009000619 W JP 2009000619W WO 2009116226 A1 WO2009116226 A1 WO 2009116226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- duct
- cooling duct
- continuously variable
- variable transmission
- rubber
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
- B62J50/30—Means for ventilation within devices provided on the cycle, e.g. ventilation means in a battery container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K2202/00—Motorised scooters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0487—Friction gearings
- F16H57/0489—Friction gearings with endless flexible members, e.g. belt CVTs
Definitions
- the present invention relates to a continuously variable transmission cooling duct arrangement structure for a saddle-ride type vehicle for attaching a cooling duct connected to a bell-con chamber of a continuously variable transmission.
- a cooling duct for cooling a Belcon chamber is provided in a motorcycle in which a belt-type continuously variable transmission engine is suspended at the rear of a main pipe extending rearward and downward from a head pipe.
- the cooling duct is provided with an air chamber in the middle thereof, and the air chamber is disposed above the front portion of the rear arm portion in the front-rear direction (see, for example, Patent Document 1).
- a conventional motorcycle equipped with a belt type continuously variable transmission engine is known.
- This engine with a belt-type continuously variable transmission has a Belcon cooling duct for cooling the Belcon chamber. Further, the engine with a belt type continuously variable transmission is suspended below a main pipe extending from the head pipe toward the lower rear side of the vehicle body.
- the front suspension of the engine with a belt-type continuously variable transmission is provided at the upper front end of the crankcase.
- the Belcon cooling duct is connected to the upper part of the continuously variable transmission housing portion of the Belcon chamber, behind the front suspension portion of the engine.
- This Belcon cooling duct is attached to the engine hanger of the frame in a state of being attached in advance to the upper part of the Belcon chamber (see, for example, Patent Document 2).
- JP 2007-62716 A JP 2007-62715 A
- the front suspension part of the engine is provided at the front end of the crankcase of the horizontal engine below the main pipe extending diagonally below the rear of the vehicle body, so that the front suspension part of the engine is separated from the main pipe.
- the hangers were long and wide, leading to an increase in the weight of the car body.
- the present invention has been made in view of the above-described circumstances, and is capable of increasing the degree of freedom in layout and design in the vicinity of the cooling duct while supplying sufficient cooling air. It is to provide a machine cooling duct arrangement structure.
- the present invention also provides a continuously variable transmission cooling duct arrangement structure for a saddle-ride type vehicle that can easily fasten a suspension portion of an engine with a Belcon cooling duct and that does not increase the weight of the engine hanger. There is.
- the present invention includes a main pipe extending rearward and downward from a head pipe that pivotally supports a handle, a pair of left and right rear upper pipes whose front ends extend rearward and upward from the rear of the main pipe, A rear frame portion formed of a pair of left and right rear lower pipes provided below the rear upper pipe and joined to the rear upper pipe, a storage box disposed between the pair of left and right rear upper pipes, and a rear portion of the main pipe
- a continuously variable transmission cooling duct arrangement structure for a saddle-ride type vehicle comprising: a suspended internal combustion engine equipped with a belt-type continuously variable transmission; and a cooling duct for cooling a transmission belt of the continuously variable transmission.
- a part of the cooling duct is bent at the joint between the main pipe and the rear upper pipe so as to extend from the main pipe to the rear frame. Parts are arranged with a suction port of the cooling duct, characterized in that it is connected from between the rear upper pipe and Riaroapaipu on the storage box side wall. According to this configuration, the cooling duct can be arranged along the main pipe and the rear lower pipe.
- the cooling duct may be connected to a front portion of the continuously variable transmission housing portion of the internal combustion engine. According to this configuration, the length of the cooling duct can be increased.
- the storage box is rubber-mounted on a vehicle body frame, and the cooling duct is connected to the continuously variable transmission, and the rubber duct connected to the storage box and connected to the resin duct. You may be comprised from the duct. According to this configuration, even if the rubber-mounted storage box moves due to vibration or the like, the cooling duct can follow this movement.
- the normal section of the axis of the rubber duct has an elliptical shape with the major axis extending in the vertical direction, and the portion along the main pipe from the connection portion of the resin duct with the rubber duct is the axis method.
- the line section may be circular, and the normal section of the axis along the continuously variable transmission of the resin duct may have an elliptical shape whose major axis is along the vertical direction. According to this configuration, the cooling duct does not protrude in the vehicle body width direction over substantially the entire length of the cooling duct while sufficiently securing the cooling air flow rate.
- a front suspension part for suspending the internal combustion engine on a main pipe is provided above the internal combustion engine, the cooling duct is disposed above the internal combustion engine with a gap from the internal combustion engine, and the internal combustion engine
- the front suspension portion is disposed behind the connection portion of the cooling duct with the continuously variable transmission housing portion and disposed in the gap in a side view.
- the front suspension portion of the internal combustion engine can be provided at a position close to the main pipe, and the internal combustion engine can be attached to the main pipe from the gap between the cooling duct and the internal combustion engine.
- the cooling duct is connected to the upper surface of the continuously variable transmission housing portion of the Belcon chamber, and the front suspension portion of the internal combustion engine is located on the upper surface of the crankcase between the shaft center of the primary sheave and the shaft center of the secondary sheave. It may be provided. According to this configuration, the power unit can be fixed between the axis of the primary sheave and the axis of the secondary sheave.
- the saddle-ride type vehicle further includes a storage box disposed above the internal combustion engine, and the cooling duct is connected to the resin duct connected to the continuously variable transmission and the resin duct. And a rubber duct connected to the storage box.
- the resin duct can be assembled into the power unit and assembled into the body frame, and the rubber duct can be assembled into the storage box and installed into the body frame.
- a part of the cooling duct is bent at a joint between the main pipe and the rear upper pipe so as to extend from the main pipe to the rear frame.
- the cooling duct is connected to the storage box side wall from between the rear upper pipe and the rear lower pipe, so that the cooling duct is arranged along the main pipe and the rear lower pipe.
- the length of the cooling duct can be increased.
- cooling duct is connected to the front portion of the continuously variable transmission housing portion of the internal combustion engine, a long duct length of the cooling duct can be secured, and the cooled air is supplied to the Belcon chamber. Can do.
- the storage box is rubber-mounted on a vehicle body frame, and the cooling duct is connected to the continuously variable transmission, and the rubber duct connected to the storage box and connected to the resin duct. Since it is comprised from the duct, even if the rubber-mounted storage box moves by vibration etc., a cooling duct can be made to follow this movement. Thereby, the electrical components etc. which need a countermeasure with respect to a vibration can be arrange
- a long cooling duct having a plurality of bent portions with two parts it is possible to reduce the manufacturing costs of molds and materials.
- the normal section of the axis of the rubber duct has an elliptical shape with the major axis extending in the vertical direction, and the portion along the main pipe from the connection portion of the resin duct with the rubber duct is the axis method.
- the cross section is circular, and the normal cross section of the axis of the resin duct along the continuously variable transmission has an elliptical shape with the long axis extending in the vertical direction, so that a sufficient cooling air flow rate can be secured.
- the cooling duct does not protrude in the vehicle body width direction over almost the entire length of the cooling duct, the layout freedom in the vehicle body width direction around the cooling duct is increased, and the design freedom is also increased.
- the vehicle body cover that covers the side of the cooling duct can be prevented from projecting to the side of the vehicle body.
- the cooling duct interferes with the main pipe, the rear pipe, and its joint part by reducing the vertical dimension of the cooling duct. Can be avoided.
- the cooling duct is disposed above the internal combustion engine with a gap from the internal combustion engine, and the front suspension portion of the internal combustion engine is behind the connection portion of the cooling duct with the continuously variable transmission housing portion, Since it is disposed in the gap in a side view, the front suspension part of the internal combustion engine can be provided at a position close to the main pipe, and the engine hanger provided on the main pipe can be reduced in size and weight. Further, the internal combustion engine can be attached to the main pipe from the gap between the cooling duct and the internal combustion engine, and the internal combustion engine can be easily attached to the engine hanger even when the internal combustion engine and the cooling duct are in a small assembly.
- the cooling duct is connected to the upper surface of the continuously variable transmission housing portion of the Belcon chamber, and the front suspension portion of the internal combustion engine is located on the upper surface of the crankcase between the shaft center of the primary sheave and the shaft center of the secondary sheave. Since it is provided, the internal combustion engine can be fixed between the axis of the primary sheave and the axis of the secondary sheave. Further, the internal combustion engine can be supported at a more stable mounting position.
- the saddle-ride type vehicle further includes a storage box disposed above the internal combustion engine, and the cooling duct is connected to the resin duct connected to the continuously variable transmission and the resin duct.
- the cooling duct is connected to the resin duct connected to the continuously variable transmission and the resin duct.
- it is composed of a rubber duct connected to the storage box, so that the resin duct can be assembled into the power unit and attached to the body frame, and the rubber duct can be integrated into the storage box.
- a small assembly can be attached to the body frame, and assembly work can be easily performed.
- one side is comprised with the rubber-made ducts, a connection with a resin-made duct can be performed easily.
- FIG. 1 is a side view showing a motorcycle according to an embodiment of the present invention.
- FIG. 2 is a view of the motorcycle as viewed from below, in which the main stand and the like are omitted.
- FIG. 3 is a plan view showing a cross section of the power unit in the horizontal direction from above.
- FIG. 4 is a side view showing a state in which the storage box is attached as seen from the right side of the vehicle body.
- FIG. 5 is a top view of FIG.
- FIG. 6 is a perspective view showing the inside of the storage box.
- FIG. 7 is a perspective view showing a state where the battery is mounted in FIG.
- FIG. 8 is a side view showing a state in which the storage box is removed from FIG.
- FIG. 1 is a side view showing a motorcycle according to an embodiment of the present invention.
- FIG. 2 is a view of the motorcycle as viewed from below, in which the main stand and the like are omitted.
- FIG. 3 is a plan view showing a
- FIG. 9 is a plan view of the storage box as viewed from above, which is a modification of the present invention.
- FIG. 10 shows a first modification of the present invention as viewed from the right side of the vehicle body.
- FIG. 11 shows a second modification of the present invention as viewed from the right side of the vehicle body.
- FIG. 1 is a side view showing a motorcycle as an example of a saddle-ride type vehicle according to an embodiment of the present invention.
- descriptions of directions such as front and rear, left and right and up and down are for the vehicle body.
- an arrow FR indicates the front of the vehicle body
- an arrow R indicates the right side of the vehicle body
- an arrow UP indicates the upper side of the vehicle body.
- the motorcycle 1 includes a head pipe 11, a main pipe 12 that extends obliquely downward from the head pipe 11 toward the rear of the vehicle body, a pair of left and right pivot plates 13 that extend downward from the rear end of the main pipe 12, and a pivot plate 13.
- the vehicle body frame 10 includes a pair of left and right rear frames 14 that are coupled to a rear end portion of the main pipe 12 and extend rearward and obliquely upward.
- the rear frame 14 includes a pair of left and right rear upper pipes 14A extending obliquely upward from the rear of the main pipe 12 and a pair of left and right rear lower pipes connecting the pivot plate 13 and the rear upper pipe 14A below the rear upper pipe 14A. 14B.
- a steering handle 16 extending left and right is attached to the upper side of the head pipe 11 via a steering stem 15.
- a pair of left and right front forks 17 extend below the head pipe 11, and a front wheel 18 is rotatably supported by the front forks 17.
- the front wheel 18 is covered with a front fender 38 above.
- a headlight 25 is provided in front of the head pipe 11 so as to be exposed to the front of the vehicle body from a front top cover 37B described later.
- a power unit 50 (internal combustion engine) and an air cleaner 19 are mainly attached to the main pipe 12.
- the upper part of the power unit 50 is fixed to an engine hanger 50 ⁇ / b> A attached to the center part of the main pipe 12 in the front-rear direction (front suspension part), and the rear part is fixed to the pivot plate 13 at two locations. That is, the power unit 50 is suspended in such a manner that it is suspended below the rear portion of the main pipe 12.
- the air cleaner 19 is attached to the front lower side of the main pipe 12 and in front of the power unit 50.
- the air cleaner 19 is connected to a throttle body 30A disposed between the power unit 50 and the air cleaner 19 via an intake pipe 30.
- the throttle body 30A is connected to the power unit 50.
- the running outside air taken in by the air cleaner 19 is supplied to the throttle body 30A.
- the throttle body 30 ⁇ / b> A mixes fuel and air and supplies them to the power unit 50.
- the power unit 50 includes an engine 51 and a belt-type continuously variable transmission (hereinafter referred to as CVT) 52 on the right side of the engine 51.
- the engine 51 has a piston moving direction in the longitudinal direction of the vehicle body, and has a flat shape that is long in the longitudinal direction of the vehicle body as a whole unit.
- One end of the exhaust pipe 31 is connected to the exhaust port located below the engine 51.
- the exhaust pipe 31 extends downward from the exhaust port and is then routed toward the rear of the vehicle body.
- the other end of the exhaust pipe 31 is connected to a muffler 32 provided at the rear of the power unit 50.
- a catalyst 33 which is disposed behind the pivot plate 13 and removes hydrocarbons, carbon monoxide, nitrogen oxide and the like in the exhaust gas by oxidation and reduction reactions.
- a kick pedal 34 for starting the engine 51 is provided at the lower center portion of the power unit 50 and on the right side of the vehicle body.
- a side stand 35 is provided on the left side of the vehicle body of the power unit 50 for stopping the vehicle body in an inclined state.
- a main stand 36 is rotatably attached to the lower portion of the pivot plate 13 and behind the power unit 50 to stop the vehicle body in an upright state. Even when the main stand 36 is erected to stop the vehicle body in an upright state as shown in FIG. 1 or when the main stand 36 is not used and extends substantially horizontally rearward, the kick pedal 34 can be rotated. It is arranged so as not to disturb. Thus, the driver can step on the kick pedal 34 regardless of whether the main stand 36 is set up or not used. Further, a brake pedal 60 that is operated by a driver's foot is rotatably supported at the lower rear end of the engine 51.
- a pivot shaft 20 is provided at an intermediate portion in the vertical direction of the pivot plate 13.
- a rear fork 22 is supported by the pivot shaft 20 so as to be swingable in the vertical direction.
- a rear wheel 21 is rotatably supported at the rear portion of the rear fork 22.
- the rear wheel 21 and the power unit 50 are connected by a drive chain (not shown), and the rotational power from the power unit 50 is transmitted to the rear wheel 21 through the drive chain.
- the rear fork 22 is adapted to absorb an impact by a rear cushion 23 interposed between a rear end portion of the rear fork 22 and the rear frame 14.
- a storage box 27 having an opening on the upper surface is attached to the front part of the left and right rear frames 14.
- a cooling duct 43 led from the upper surface of the power unit 50 is connected to the lower side of the storage box 27.
- the cooling duct 43 is for supplying the air taken in from the outside of the storage box 27 to a Belcon chamber 57C described later in detail.
- an electrical component chamber 27B for storing a battery 44 and the like is also formed inside the storage box 27.
- a fuel tank 28 is disposed behind the storage box 27.
- a fuel pump 28A is built in the fuel tank 28, and fuel is supplied to the throttle body 30A by the fuel pump 28A.
- Above the storage box 27 and the fuel tank 28 are covered with a tandem seat 29.
- the seat 29 can be rotated around a hinge shaft 66 provided on the front side of the storage box 27, whereby the seat 29 can be opened and closed during storage and refueling.
- a seal member (not shown) is provided at the upper edge of the upper opening of the storage box 27 so as to contact the bottom plate of the seat 29 and prevent rainwater or the like from entering the inside.
- the rear lower pipe 14 ⁇ / b> B is provided with a pair of left and right step support frames 26, and a pair of left and right pillion steps 25 on which the passenger rides his / her feet are attached.
- a rear fender 39 and a tail lamp 40 are attached to the rear end portion of the rear frame 14 so as to cover the rear wheel 21.
- the motorcycle 1 is covered with a vehicle body cover 37 mainly made of a resin material.
- the vehicle body cover 37 includes a handle cover 37A that covers the front portion of the handle 16, a front top cover 37B that covers the front portion of the vehicle body frame 10, a main pipe cover 37C that covers the upper portion of the main pipe 12, and A main pipe side cover 37D that covers the side of the main pipe 12 and an opening (not shown) of the air cleaner 19, a lower cover that covers the lower part of the body frame 10, and a body that covers the center of the body frame 10 are not shown.
- a center cover, a body side cover that covers the side portion of the body frame 10, and a rear side cover that covers the rear side portion of the body frame 10 are provided.
- a space S recessed in a substantially U shape in a side view, that is, a leg straddling space S when a driver gets on and off is secured above the main pipe cover 37C and in front of the seat 29.
- FIG. 2 is a diagram showing the motorcycle 1 from below, in which the main stand 36 and the like are omitted.
- step bars 42 are provided that extend to both sides in the vehicle body width direction.
- a pair of steps 41 for attaching a foot to the driver are attached.
- the step bar 42 is attached to the lower surface of the crankcase 53 via step bar brackets 42A and 42B.
- the outer shape of the power unit 50 is not symmetrical with respect to the central axis X of the main pipe 12 that extends in the longitudinal direction of the vehicle body.
- the center line Q of the engine 51 is located on the left side in the vehicle body width direction with respect to the center axis X.
- the continuously variable transmission housing portion 57 of the CVT 52 protrudes so as to protrude to the right side of the vehicle body. That is, the continuously variable transmission housing portion 57 is disposed between the brake pedal 60 and the engine 51 that extend diagonally forward to the right.
- reference numeral 41 denotes a step
- 42 denotes a step bar
- 62 denotes an arm of the brake pedal 60
- 63 denotes a pedal portion for stepping on the arm 62.
- FIG. 3 is a diagram showing a cross section of the power unit 50 in the horizontal direction from above.
- the engine 51 includes a crankcase 53 (crank housing portion) located at the rear of the vehicle body (lower side in FIG. 4), a cylinder block 54 connected to the front side of the crankcase 53, and a cylinder connected to the front side of the cylinder block 54.
- a head 55 and a cylinder cover 45 covering the front end of the engine 51 are provided.
- the crankcase 53 includes a left crankcase 53A and a right crankcase 53B, and the left crankcase 53A and the right crankcase 53B are disposed to face each other in the vehicle width direction.
- a crank portion 53D of a crankshaft 53C that extends horizontally in the vehicle width direction is housed in the crankcase 53, and the crankshaft 53C is rotatably supported by the crankcase 53.
- a kick pedal 34 (FIG. 1) is attached to the crankcase 53, and when the engine 51 is started, the driver depresses the kick pedal 34 to give a rotational force to the crankshaft 53C. 51 starts.
- a cylinder 54A is formed in the cylinder block 54 in the longitudinal direction of the vehicle body, and a piston 54B is slidably inserted into the cylinder 54A.
- the center of the cylinder 54A is the center line Q of the engine 51.
- One end of a connecting rod 54C is connected to the piston 54B, and the other end of the connecting rod 54C is connected to the crankshaft 53C.
- the cylinder head 55 is formed with a combustion chamber 55A and an intake port and an exhaust port (not shown) communicating with the combustion chamber 55A, and an ignition plug 55B is inserted into the combustion chamber 55A.
- a throttle body 30A (FIG. 1) is connected to the intake port, and an exhaust pipe 31 (FIG. 1) is connected to the exhaust port.
- the cylinder head 55 is provided with a camshaft 55C.
- the camshaft 55C is connected to the crankshaft 53C by a cam chain 55D and rotates in conjunction with the crankshaft 53C to open and close an intake valve and an exhaust valve (not shown).
- a generator case 56 that houses a generator 56A is attached to the left of the crankcase 53, and a continuously variable transmission housing portion 57 that houses a CVT 52 is provided to the right of the crankcase 53.
- the continuously variable transmission housing portion 57 is formed independently from the crankcase 53 and the like that is used in a state where oil such as lubricating oil is interposed, and is used in a dry state.
- the continuously variable transmission housing 57 includes a bell-con case 57A that covers the inner side (left side) in the vehicle width direction and a bell-con cover 57B that covers the outer side (right side) in the vehicle width direction. Inside the bell-con case 57A and the bell-con cover 57B, a bell-con chamber 57C for accommodating the CVT 52 is provided.
- crankshaft 53C extends through the crankcase 53 and the bellcon case 57A to the bellcon chamber 57C. Since the primary sheave 57D of the CVT 52 is fitted into the right end portion of the crankshaft 53C, the primary sheave 57D rotates according to the rotation of the crankshaft 53C.
- the left end portion of the crankshaft 53C extends through the crankcase 53 into the generator case 56.
- a generator 56A is attached to the left end of the crankshaft 53C.
- a secondary sheave shaft 57E is arranged behind the crankcase 53 in parallel with the crankshaft 53C.
- the right end of the secondary sheave shaft 57E extends through the crankcase 53 and the bellcon case 57A to the bellcon chamber 57C.
- the secondary sheave 57F of the CVT 52 is fitted into the right end portion of the secondary sheave shaft 57E.
- the CVT 52 includes a primary sheave 57D, a secondary sheave 57F, and a V belt (not shown) wound around the primary sheave 57D and the secondary sheave 57F.
- a plurality of blades 57H for blowing air are formed on the right portion of the primary sheave 57D, and the blades 57H guide air from the cooling duct 43 (FIG. 1) to the Belcon chamber 57C. Air is conveyed outside through an air hole (not shown), and the Belcon chamber 57C is cooled.
- the centrifugal clutch 58 includes a support plate 58B on which a clutch shoe 58A is provided and a clutch plate 58C.
- the support plate 58B is attached to the left side of the secondary sheave shaft 57E and rotates integrally with the secondary sheave shaft 57E.
- a reduction gear 59 is provided on the left side of the centrifugal clutch 58.
- the speed reducer 59 is provided on an input gear 59A provided on the clutch plate 58C, intermediate gears 59B and 59C rotatably supported on the crankcase 53, and an output shaft 59E rotatably supported on the crankcase 53.
- the final stage gear 59D is provided.
- the input gear 59A meshes with the intermediate gear 59B, and the intermediate gear 59C provided coaxially with the intermediate gear 59B meshes with the final stage gear 59D.
- the clutch shoe 58A comes into contact with the clutch plate 58C due to an increase in centrifugal force.
- the clutch plate 58C rotates in conjunction with the secondary sheave shaft 57E, and the output shaft 59E rotates through the input gear 59A, the intermediate gears 59B and 59C, and the final gear 59D.
- the left end portion of the output shaft 59E penetrates the left crankcase 53A and protrudes to the outside of the crankcase 53, and the above-described transmission mechanism (not shown) is attached.
- the rotation output of the output shaft 59E is transmitted to the rear wheel 21 (FIG. 1) via the transmission mechanism, and the rear wheel 21 rotates.
- the power unit 50 since the power unit 50 according to the present invention includes the CVT 52 on the right side of the crankshaft 53C, the continuously variable transmission housing portion 57 that houses the CVT 52 protrudes from the crankcase 53 to the right side of the vehicle body.
- FIG. 4 is a side view of the power unit 50 and the storage box 27 housed in the vehicle body frame 10 and connected to each other by a cooling duct 43, as viewed from the right side of the vehicle body.
- FIG. 5 is a top view of FIG. 6 is a perspective view showing the inside of the storage box 27, and
- FIG. 7 is a perspective view showing a state where the battery 44 is mounted in FIG.
- the cooling duct 43 includes a resin duct 43A attached to the power unit 50 side and a rubber duct 43B attached to the storage box 27 side. These resin duct 43A and rubber By connecting the duct 43B with the connecting portion 85, the inside of the bell-con chamber 57C (see FIG. 3) of the power unit 50 and the inside of the storage box 27 are communicated.
- This connection part 85 is connected airtight so that the air in the cooling duct 43 does not leak.
- the resin duct 43 ⁇ / b> A is connected to the upper side surface of the Belcon chamber 57 ⁇ / b> C of the power unit 50.
- the resin duct 43A includes a first duct portion 80A protruding in a direction substantially orthogonal to the upper surface of the bell-con chamber 57C and obliquely upward toward the front of the vehicle body, and a crank of the power unit 50 from the upper end portion of the first duct portion 80A.
- a second duct portion 80B extending toward the rear rear upper side of the vehicle body along the upper surface of the crankcase 53 with a gap 81 from the upper surface of the case 53, and the rear upper pipe 14A from the rear end portion of the second duct portion 80B
- a third duct portion 80C (bending portion) extending obliquely downward and rearward of the vehicle body along the main pipe 12 so as to avoid the connecting portion 67 with the main pipe 12, and an obliquely rearward portion of the vehicle body from the lower end portion of the third duct portion 80C. It is comprised from 4th duct part 80D extended upwards.
- the first duct portion 80A to the fourth duct portion 80D are substantially above the continuously variable transmission housing portion 57 and in the plan view in the front-rear direction of the vehicle. It extends in a straight line.
- the rear end portion of the fourth duct portion 80D is a connection portion 85 to which the rubber duct 43B is connected.
- the resin duct 43A is attached to the rear upper pipe 14A with bolts 183 in the vicinity of the connection portion 67 between the rear upper pipe 14A and the main pipe 12.
- the cross-sectional shape may become an ellipse.
- the major axis of the elliptical shape is oriented in the longitudinal direction of the vehicle body, and the minor axis is oriented in the vehicle body width direction.
- the major axis of the ellipse is directed in the vertical direction, and the minor axis direction of the ellipse is oriented in the vehicle body width direction.
- the occupied space in the vehicle body width direction of the resin duct 43A is reduced and the installation space for other parts is secured. Will be able to. Further, the cooling duct 43 protrudes to the side of the vehicle body, thereby preventing the vehicle body cover from protruding outward.
- the third duct portion 80C and the fourth duct portion 80D are formed so that their cross-sectional shapes are circular. This is to avoid interference with the rear upper pipe 14A and the storage box 27 located above the third duct part 80C and the fourth duct part 80D. In order to secure a larger storage space for the storage box 27, The height dimensions of the third duct part 80C and the fourth duct part 80D are reduced. Further, the cross-sectional areas of the third duct portion 80C and the fourth duct portion 80D are made equal to those of the other first duct portion 80A and the second duct portion 80B.
- the storage box 27 is rubber-mounted on the rear upper surface of the main pipe 12 and the rear frame 14 via an elastic member (not shown). As shown in FIGS. 4 and 5, inside the storage box 27, a storage chamber 27A that can store luggage is stored on the front side, and electrical components such as a battery 44 are stored on the rear side of the storage chamber 27A. It is defined in the electrical component room 27B.
- a lid 86 is provided at the top of the electrical component room 27B so as to be openable and closable.
- a tool 89 can be attached to the upper side of the lid portion 86.
- a string member 88 is hooked on a pin 87 provided on the front side of the lid part 86 and a hook part 91 provided on the rear side, and a tool 89 is attached by the string member 88.
- a rubber duct attachment opening 65 to which the rubber duct 43B is connected is formed below the side wall of the electrical component chamber 27B.
- a battery 44 is attached to the upper side of the rubber duct attachment opening 65 as shown in FIG.
- an opening (not shown) through which electric wiring connected to the battery 44 and the like is passed, and a vent hole (not shown) for taking outside air into the electrical component room 27B are formed on the side wall of the electrical component room 27B. Is formed.
- air outside the storage box 27 is taken into the electrical component chamber 27 ⁇ / b> B to cool the electrical components such as the battery 44, and thereafter flows to the cooling duct 43.
- the rubber duct 43 ⁇ / b> B is assembled into the storage box 27 and assembled in the vehicle body frame 10 in a state of being integrated with the storage box 27.
- the rubber duct 43B extends obliquely downward from the front of the vehicle body from the storage box 27, and is connected to the fourth duct portion 80D of the resin duct 43A and the connection portion 85 at the lower end thereof.
- the rubber duct mounting opening 65 described above is formed between the rear upper pipe 14A and the rear lower pipe 14B, and the rubber duct 43B is connected to the rear upper pipe 14A. Connection is made between the rear lower pipe 14B.
- the rubber duct 43B is formed of a rubber material having elasticity, and can be freely deformed in accordance with the position of the storage box 27 or the position of the resin duct 43A. That is, the rubber duct 43B is made of an elastic rubber material so that vibration from the power unit 50 is not transmitted to the storage box 27 having a vibration isolation structure in order to protect the electrical components.
- the rubber duct 43B is not limited to a rubber material as long as it has elasticity, and may be made of, for example, silicon.
- the cross section of the rubber duct 43B is formed in an elliptical shape, and the rubber duct 43B is attached so that the long axis of the ellipse is directed in the vertical direction of the vehicle body.
- FIG. 8 is a side view in which the storage box 27 is removed from the state of FIG.
- the resin duct 43 ⁇ / b> A is assembled into the power unit 50 and assembled into the body frame 10 in a state of being integrated with the power unit 50.
- the relationship between the power unit 50, the engine hanger 50A, and the cooling duct 43 will be described.
- the upper surface of the bell-con chamber 57 ⁇ / b> C of the power unit 50 is inclined upward and obliquely upward from the front side of the vehicle body to the rear side in a state where the power unit 50 is housed in the vehicle body frame 10.
- FIG. 8 is a side view in which the storage box 27 is removed from the state of FIG.
- the resin duct 43 ⁇ / b> A is assembled into the power unit 50 and assembled into the body frame 10 in a state of being integrated with the power unit 50.
- the upper surface of the bell-con chamber 57 ⁇ / b> C of the power unit 50 is inclined upward and obliquely
- the main pipe 12 is inclined downward and obliquely downward from the front side of the vehicle body to the rear side. Further, there is a gap in a side view between the main pipe 12 and the upper surface of the Belcon chamber 57C, and it is closest in the vicinity of the rear end portion of the power unit 50. Therefore, the front suspension part 90 for attaching the power unit 50 is formed by projecting the engine hanger 50A below the main pipe 12 and between the main pipe 12 and the upper surface of the bell-con chamber 57C. Bolts 182 can be inserted into the suspension 90 from the side of the vehicle body. Moreover, the cooling duct 43 needs to cool the air which passes the inside more efficiently by ensuring the length from the Belcon chamber 57C to the storage box 27 long.
- connection position between the first duct portion 80A of the resin duct 43A and the Belcon chamber 57C is located on the vehicle body front side of the Belcon chamber 57C. Further, in order to reduce the size of the engine hanger 50A, the main pipe 12 and the power unit 50 are close to each other at the rear side of the vehicle body from the connecting portion between the first duct portion 80A and the upper surface of the bell-con chamber 57C. Is arranged. Further, as shown in FIG.
- the position of the front suspension portion 90 is between the shaft center 57P of the primary sheave 57D and the shaft center 57Q of the secondary sheave 57F in the longitudinal direction of the vehicle body, and the top surface of the crankcase 53. Is provided. Further, a gap 81 (a portion shown by hatching in FIG. 4) is provided between the second duct portion 80B and the upper surface of the bell-con chamber 57C so that the engine hanger 50A and the power unit 50 can be fixed with bolts 182 from the side of the vehicle body. ).
- a part of the cooling duct 43 extends along the main pipe 12 and the rear upper pipe 14A.
- the rubber duct 43B of the cooling duct 43 is disposed between the rear upper pipe 14A and the rear lower pipe 14B so that the side wall of the storage box 27 is disposed at the joint with the rear upper pipe 14A. Since the cooling duct 43 can be arranged along the main pipe 12 and the rear lower pipe 14B, the duct length of the cooling duct 43 can be increased. it can. Thereby, sufficient cooling air can be supplied only by the cooling duct 43. In addition, the degree of freedom in layout around the cooling duct can be increased, and the degree of freedom in design can also be improved.
- the cooling duct 43 is connected to the front part of the continuously variable transmission housing part 57 of the power unit 50, the duct length of the cooling duct 43 is ensured to be longer than when connected to the center part or the rear part.
- the cooled air can be supplied into the Belcon chamber 57C.
- the storage box 27 is rubber-mounted on the main pipe 12 and the rear upper pipe 14A, and the cooling duct 43 is connected to the resin duct 43A connected to the CVT 52 and the resin duct 43A and Since the rubber duct 43B is connected to the rubber duct mounting opening 65, even if the rubber-mounted storage box 27 moves due to vibration or the like, the cooling duct 43 can follow this movement. it can. As a result, the battery 44 and the like that need countermeasures against vibration can be arranged in the storage box 27. Further, by forming the long cooling duct 43 having a plurality of bent portions with two parts, it is possible to reduce the manufacturing cost of a mold or a material.
- the normal cross section of the axis of the rubber duct 43B has an elliptical shape with the major axis extending along the vertical direction, and the portion along the main pipe 12 from the connecting portion 85 of the resin duct 43A to the rubber duct 43B is the axis.
- the normal cross section of this is a circular shape, and the normal cross section of the axis along the upper surface of the Belcon chamber 57C of the resin duct 43A is an elliptical shape whose major axis is along the vertical direction, so that a sufficient cooling air flow rate is secured.
- the cooling duct 43 is prevented from projecting in the vehicle body width direction over almost the entire length of the cooling duct 43, the degree of freedom in layout in the vehicle body width direction around the cooling duct 43 is increased, and the degree of design freedom is also increased.
- the vehicle body cover that covers the side of the cooling duct 43 can be prevented from projecting to the side of the vehicle body.
- the cooling duct 43 is formed in a circular shape with a reduced size in the vertical direction, so that the cooling duct 43 becomes the main pipe 12 and the rear upper pipe 14A. , And its connecting portion 67 can be avoided.
- the battery 44 can be cooled by supplying the outside air supplied into the Belcon chamber 57C through the electrical component chamber 27B of the storage box 27.
- the cooling duct 43 is disposed above the power unit 50 with a gap 81 between the upper surface of the bell-con chamber 57C of the power unit 50, and the front suspension portion 90 of the power unit 50 is connected to the continuously variable transmission housing portion 57 of the cooling duct 43. Since it is arranged in the gap 81 in a side view behind the connection part, the front suspension part 90 of the power unit 50 can be provided at a position close to the main pipe 12 formed to be inclined downward toward the rear rear side of the vehicle body.
- the engine hanger 50A provided on the main pipe 12 can be reduced in size and weight.
- the power unit 50 can be attached by bolts 182 from the side of the vehicle body with the front suspension 90 positioned in the gap 81 between the cooling duct 43 and the power unit 50, and the power unit 50 and the cooling duct 43 can be assembled in a small state.
- the power unit 50 can be easily attached to the engine hanger 50A.
- the cooling duct 43 is connected to the upper surface of the Belcon chamber 57C, and the front suspension 90 of the power unit 50 is located on the upper surface of the crankcase 53 between the shaft center 57P of the primary sheave 57D and the shaft center 57Q of the secondary sheave 57F. Since the power unit 50 is provided, the power unit 50 can be fixed between the shaft center 57P of the primary sheave 57D and the shaft center 57Q of the secondary sheave 57F, and the power unit 50 can be supported at a more stable mounting position.
- the motorcycle 1 includes a storage box 27 disposed on the rear upper side of the power unit 50, and the cooling duct 43 is connected to the resin duct 43A connected to the CVT 52, and to the storage duct 43A while being connected to the resin duct 43A.
- the resin duct 43 ⁇ / b> A can be assembled into the power unit 50 and attached to the body frame 10
- the rubber duct 43 ⁇ / b> B can be attached to the storage box 27.
- a small assembly can be assembled and attached to the body frame 10, and assembly work can be easily performed.
- one side is comprised with the rubber-made ducts 43B, connection with the resin-made ducts 43A can be performed easily.
- FIG. 9 is a plan view of a storage box 270 that is a modified example as viewed from above.
- the storage room 270A and the electrical component room 270B are partitioned by a partition wall 120 that partitions the interior of the storage room 270A and the electrical component room 270B.
- a seal member 121 is provided at the upper opening edge of the storage chamber 270A so as to contact the bottom plate of the seat 29 and prevent rainwater, outside air, or the like from entering the storage chamber 270A.
- no sealing member is provided at the upper opening edge of the electrical component chamber 270B. Accordingly, the outside air W easily enters the electrical component chamber 270 ⁇ / b> B from between the seat 29 and the storage box 27, and the outside air is easily supplied to the cooling duct 43.
- the second duct portion 80B of the resin duct 43A extends along the upper surface of the crankcase 53 of the power unit 50 toward the upper rear side of the vehicle body. If a clearance gap can be provided between the upper surface of this, it will not be restricted to this.
- the first duct portion 180A protrudes to the vicinity of the main pipe 12, and extends from the rear end portion of the first duct portion 180A along the main pipe 12 obliquely downward to the rear of the vehicle body.
- a gap 181 can also be formed between the upper surface of the crankcase 53 and the resin duct 43A.
- the bolt 182 can be inserted and assembled from the side of the vehicle body using the gap 181.
- the length of the resin duct 143A can be increased to make the entire cooling duct 143 longer, the supplied air can be effectively cooled.
- the resin duct 243 ⁇ / b> A may protrude from the front portion of the power unit 50. More specifically, an inlet 283 is formed on the side surface of the Belcon chamber 57C, and a resin duct 243A is projected from the inlet 283, so that the entire length of the cooling duct 243 (the length for sending air) is further increased. Can be long.
- the resin duct 243A protrudes from the introduction port 283 toward the front of the vehicle body, extends upward along the front side of the bell-con chamber 57C, and then extends obliquely upward to the rear of the vehicle along the top surface of the bell-con chamber 57C.
- the power unit 50 can be attached to the engine hanger 50A through the gap 81 between the resin duct 243A and the upper surface of the Belcon chamber 57C, and the cooling duct 243 is lengthened to improve the cooling efficiency. Can be made.
- a support portion 284 for supporting the cooling duct 243 in the Belcon chamber 57C may be provided at the front end of the Belcon chamber 57C.
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Abstract
Description
この構成によれば、冷却ダクトをメインパイプからリアロアパイプへと沿わせて配置することができる。
この構成によれば、冷却ダクトの長さを長くすることができる。
この構成によれば、ラバーマウントされた収納ボックスが振動等で移動したとしても、冷却ダクトをこの移動に追従させることができる。
この構成によれば、冷却空気流量を十分に確保しつつ、冷却ダクトのほぼ全長に亘って冷却ダクトが車体幅方向に張り出さないようになる。
この構成によれば、内燃機関の前側懸架部をメインパイプに近い位置に設けることができると共に、冷却ダクトと内燃機関との隙間から内燃機関をメインパイプに取り付けることができる。
この構成によれば、プライマリシーブの軸心とセカンダリシーブの軸心との間でパワーユニットを固定することができる。
この構成によれば、樹脂製ダクトをパワーユニットに一体に小組して、車体フレーム内に取り付けることができると共に、ゴム製ダクトを収納ボックスに一体に小組して、車体フレーム内に取り付けることができる。
一方、幅方向よりも上下方向にスペースが必要なメインパイプに沿う部分では、冷却ダクトの上下方向の寸法を抑えた円形にすることで、冷却ダクトがメインパイプ、リアパイプ、及びその接合部分と干渉するのを回避することができる。
図1は、本発明の実施の形態に係る鞍乗り型車両の一例たる自動二輪車を示す側面図である。なお、以下の説明中、前後左右及び上下といった方向の記載は車体に対してのものとする。また、図中矢印FRは車体前方を、矢印Rは車体右方を、矢印UPは車体上方をそれぞれ示している。
さらに、ヘッドパイプ11の前方には、後述するフロントトップカバー37Bから車体前方に表出する態様でヘッドライト25が設けられている。
エアクリーナ19は、メインパイプ12の前側下方であって、パワーユニット50の前方に取り付けられている。このエアクリーナ19は、パワーユニット50とエアクリーナ19との間に配置されたスロットルボディ30Aに吸気パイプ30を介して接続されており、このスロットルボディ30Aは、パワーユニット50と接続されている。エアクリーナ19で取り込んだ走行中の外気は、スロットルボディ30Aへと供給される。スロットルボディ30Aは、燃料と空気を混合し、パワーユニット50へと供給する。
また、パワーユニット50の下方中央部であって、車体右側には、エンジン51を始動させるキックペダル34が設けられている。また、パワーユニット50の車体左側には、車体を傾けた状態で停めるためのサイドスタンド35が設けられている。
さらに、エンジン51の下方後端部には、運転者の足で操作するブレーキペダル60が回動自在に支持されている。
これらの収納ボックス27及び燃料タンク28の上方は、タンデム式のシート29によって覆われている。このシート29は、収納ボックス27の前側に設けられたヒンジ軸66を中心に回動させることができ、これにより、収納時及び給油時にシート29を開閉させることができるようになっている。また、収納ボックス27の上側開口の上縁部には、シート29の底板と当接して内部に雨水等が入り込まないように、シール部材(図示せず)が設けられている。
また、リアフレーム14の後端部には、後輪21の上方を覆うリアフェンダ39及びテールランプ40が取り付けられている。
パワーユニット50の下部には、車体幅方向の両側方に延出するステップバー42が設けられている。このステップバー42の両端には、運転者が足を乗せるための一対のステップ41が取り付けられている。このステップバー42は、クランクケース53の下面にステップバーブラケット42A、42Bを介して取り付けられている。
なお、図2において、符号41はステップ、42はステップバー、62はブレーキペダル60のアーム、63はアーム62を踏み込むためのペダル部である。
エンジン51は、車体後方(図4の下側)に位置するクランクケース53(クランク収容部)と、クランクケース53の前側に接続されたシリンダブロック54と、シリンダブロック54の前側に接続されたシリンダヘッド55と、エンジン51の前端を覆うシリンダカバー45とを備えている。
クランクケース53内には、車幅方向に水平に延びるクランクシャフト53Cのクランク部53Dが収容され、クランクシャフト53Cはクランクケース53に回転自在に支持されている。
また、クランクケース53には、キックペダル34(図1)が取り付けられており、エンジン51の始動時には、運転者がキックペダル34を踏み下ろすことにより、クランクシャフト53Cに回転力が与えられ、エンジン51が始動する。
ピストン54Bにはコンロッド54Cの一端部が連結され、コンロッド54Cの他端部は、クランクシャフト53Cに連結されている。
シリンダヘッド55にはカムシャフト55Cが設けられ、カムシャフト55Cは、カムチェーン55Dによりクランクシャフト53Cに連結され、クランクシャフト53Cと連動して回転し、図示しない吸気バルブ及び排気バルブを開閉させる。
無段変速機収容部57は、潤滑油等の油液が介在する状態で使用されるクランクケース53等から独立して形成され、乾燥した状態で使用されている。無段変速機収容部57は、車幅方向内側(左方)を覆うベルコンケース57Aと、車幅方向外側(右方)を覆うベルコンカバー57Bとを備えて構成されている。ベルコンケース57Aとベルコンカバー57Bとの内部には、CVT52を収容するベルコン室57Cが設けられている。
また、クランクシャフト53Cの左端部は、クランクケース53を貫通して発電機ケース56内に延びている。クランクシャフト53Cの左端部には、発電機56Aが取り付けられている。
プライマリシーブ57Dの右方部分には、送風用の複数の羽根57Hが形成され、この羽根57Hにより、冷却ダクト43(図1)からベルコン室57Cに空気が導かれ、また、ベルコン室57C内の空気が図示しない空気孔から外部に搬送されて、ベルコン室57Cが冷却される。
出力軸59Eの左端部は、左クランクケース53Aを貫通してクランクケース53の外側に突出し、上述した伝動機構(不図示)が取り付けられている。出力軸59Eの回転出力は、伝動機構を介して後輪21(図1)に伝達され、後輪21が回転する。
冷却ダクト43は、図4に示すように、パワーユニット50側に取り付けられる樹脂製ダクト43Aと、収納ボックス27側に取り付けられるゴム製ダクト43Bとで構成されており、これらの樹脂製ダクト43Aとゴム製ダクト43Bを接続部85で接続することにより、パワーユニット50のベルコン室57C(図3参照)内と収納ボックス27内とが連通するようになる。この接続部85は、冷却ダクト43内の空気が漏れないように気密に接続される。
この楕円形状の長軸は、第1ダクト部80Aでは、図5に示すように、車体前後方向に向けられており、短軸は、車体幅方向に向けられている。
また、第2ダクト部80Bでは、楕円形状の長軸は上下方向に向けられ、楕円形状の短軸方向は車体幅方向に向けられている。
このように、第1ダクト部80A、第2ダクト部80Bの短軸を車体幅方向に向けることにより、樹脂製ダクト43Aの車体幅方向における占有スペースを小さくし、他の部品の設置スペースを確保することができるようになる。また、冷却ダクト43が車体側方に張り出すことで、車体カバーが外側方へ張り出すのを回避している。
また、この電装品室27Bの側壁には、バッテリー44等と接続される電気配線を通す開口(図示せず)や、電装品室27B内に外気を取り込むための通気穴(図示せず)も形成されている。これにより、収納ボックス27の外側の空気は、電装品室27Bに取り込まれてバッテリー44等の電装品を冷却するとともに、その後に冷却ダクト43へと流れるようになる。
ゴム製ダクト43Bは、図4に示すように、収納ボックス27から車体前方斜め下側に延び、その下端部で樹脂製ダクト43Aの第4ダクト部80Dと接続部85で接続される。上述したゴム製ダクト取付開口部65は、図4に示すように、リアアッパーパイプ14Aとリアロアパイプ14Bとの間に位置するように形成されており、ゴム製ダクト43Bがこれらのリアアッパーパイプ14Aとリアロアパイプ14Bとの間から接続されるようになる。
ゴム製ダクト43Bの断面形状は、楕円形状に形成されており、ゴム製ダクト43Bは、この楕円の長軸が車体上下方向に向くように取り付けられている。
樹脂製ダクト43Aは、パワーユニット50に小組され、パワーユニット50と一体になった状態で車体フレーム10内に組み立てられる。以下、パワーユニット50、エンジンハンガ50A、及び冷却ダクト43との関係について説明する。
パワーユニット50のベルコン室57Cの上面は、図8に示すように、パワーユニット50を車体フレーム10内に収容した状態で、車体前側から後側に向かって斜め上側に昇り傾斜となっている。一方、メインパイプ12は、図1でも説明したとおり、車体前側から後側に向かって斜め下側に下り傾斜になっている。また、メインパイプ12とベルコン室57Cの上面との間には、側面視において隙間を有しており、パワーユニット50の後端部の近傍で最も近くなる。そのため、パワーユニット50を取り付けるための前側懸架部90は、メインパイプ12の下方であって、このメインパイプ12とベルコン室57Cの上面との間にエンジンハンガ50Aを突出させることで構成し、この前側懸架部90に車体側方からボルト182を挿入できるようにしている。
また、冷却ダクト43は、ベルコン室57Cから収納ボックス27までの長さを長く確保することで、その内部を通過する空気をより効率よく冷却する必要がある。
また、エンジンハンガ50Aは、その形状を小型化するために、メインパイプ12とパワーユニット50とが近い位置であって、第1ダクト部80Aとベルコン室57Cの上面との接続部よりも車体後方側に配置している。さらに、この前側懸架部90の位置は、図4に示すように、車体前後方向において、プライマリシーブ57Dの軸心57Pとセカンダリシーブ57Fの軸心57Qとの間であって、クランクケース53の上面に設けられている。
また、このエンジンハンガ50Aとパワーユニット50とを車体側面からボルト182で固定可能なように、第2ダクト部80Bとベルコン室57Cの上面との間に隙間81(図4において網掛けして示す部分)を設けている。
一方、幅方向よりも上下方向にスペースが必要なメインパイプ12に沿う部分では、冷却ダクト43の上下方向の寸法を抑えた円形にすることで、冷却ダクト43がメインパイプ12、リアアッパーパイプ14A、及びその接続部分67と干渉するのを回避することができる。
図9は、変形例である収納ボックス270を上側から見た平面図である。
収納室270Aと電装品室270Bとは、その内部を前後に仕切る仕切壁120によって仕切られている。また、収納室270Aの上側開口縁部には、シート29の底板と当接して、収納室270A内に雨水や外気等が入り込まないように、シール部材121が設けられている。一方、電装品室270Bの上側開口縁部には、シール部材を設けていない。
これにより、シート29と収納ボックス27との間から電装品室270Bに外気Wが入り込み易くなり、冷却ダクト43へ外気を供給し易くなる。
また、樹脂製ダクト143Aの長さを長くして、冷却ダクト143全体の長さをより長く構成することができるので、供給する空気を効果的に冷却することができる。
Claims (12)
- ハンドルを回動自在に軸支するヘッドパイプから後下方に延びるメインパイプと、
前端がメインパイプ後部から後上方に延びる左右一対のリアアッパーパイプと、当該リアアッパーパイプの下方に設けられるとともにリアアッパーパイプと接合される左右一対のリアロアパイプとからなるリアフレーム部と、
前記左右一対のリアアッパーパイプ間に配置される収納ボックスと、
当該メインパイプの後部に懸架される、ベルト式の無段変速機を搭載した内燃機関と、
無段変速機の変速ベルトを冷却する冷却ダクトと、
を備えた鞍乗り型車両の無段変速機冷却ダクト配置構造において、
前記冷却ダクトの一部は、メインパイプからリアフレームへ沿うように、メインパイプとリアアッパーパイプとの接合部に曲げ部を有して配置され、前記冷却ダクトの吸込口部がリアアッパーパイプとリアロアパイプとの間から前記収納ボックス側壁に接続されることを特徴とする鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記冷却ダクトは前記内燃機関の無段変速機収容部の前部に接続されていることを特徴とする請求項1に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。
- 前記収納ボックスは車体フレームにラバーマウントされ、
前記冷却ダクトは、前記無段変速機に接続される樹脂製ダクトと、当該樹脂製ダクトに接続されるとともに前記収納ボックスに接続されるゴム製ダクトから構成されていることを特徴とする請求項1に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記収納ボックスは車体フレームにラバーマウントされ、
前記冷却ダクトは、前記無段変速機に接続される樹脂製ダクトと、当該樹脂製ダクトに接続されるとともに前記収納ボックスに接続されるゴム製ダクトから構成されていることを特徴とする請求項2に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記ゴム製ダクトの軸線の法線断面は、長軸が上下方向に沿う楕円形状であり、
前記樹脂製ダクトの前記ゴム製ダクトとの接続部からメインパイプに沿う部分は、軸線の法線断面は円形状であり、
前記樹脂製ダクトの前記無段変速機に沿う部分の軸線の法線断面は長軸が上下方向に沿う楕円形状であることを特徴とする請求項1に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記ゴム製ダクトの軸線の法線断面は、長軸が上下方向に沿う楕円形状であり、
前記樹脂製ダクトの前記ゴム製ダクトとの接続部からメインパイプに沿う部分は、軸線の法線断面は円形状であり、
前記樹脂製ダクトの前記無段変速機に沿う部分の軸線の法線断面は長軸が上下方向に沿う楕円形状であることを特徴とする請求項2に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記ゴム製ダクトの軸線の法線断面は、長軸が上下方向に沿う楕円形状であり、
前記樹脂製ダクトの前記ゴム製ダクトとの接続部からメインパイプに沿う部分は、軸線の法線断面は円形状であり、
前記樹脂製ダクトの前記無段変速機に沿う部分の軸線の法線断面は長軸が上下方向に沿う楕円形状であることを特徴とする請求項3に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記ゴム製ダクトの軸線の法線断面は、長軸が上下方向に沿う楕円形状であり、
前記樹脂製ダクトの前記ゴム製ダクトとの接続部からメインパイプに沿う部分は、軸線の法線断面は円形状であり、
前記樹脂製ダクトの前記無段変速機に沿う部分の軸線の法線断面は長軸が上下方向に沿う楕円形状であることを特徴とする請求項4に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記内燃機関の上部に、前記内燃機関をメインパイプに懸架する前側懸架部が設けられ、
前記冷却ダクトを前記内燃機関上方で前記内燃機関と隙間を持って配置し、前記内燃機関の前側懸架部は、前記冷却ダクトの前記無段変速機収容部との接続部の後方で、側面視で前記隙間に配置されたことを特徴とする請求項1に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 前記冷却ダクトはベルコン室の無段変速機収容部の上面に接続され、
前記内燃機関の前側懸架部が、プライマリシーブの軸心とセカンダリシーブの軸心との間で、クランクケース上面に設けられていることを特徴とする請求項9に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 鞍乗り型車両は、前記内燃機関の後上方に配置される収納ボックスをさらに備え、
前記冷却ダクトは、前記無段変速機に接続される樹脂製ダクトと、当該樹脂製ダクトに接続されるとともに前記収納ボックスに接続されるゴム製ダクトから構成されていることを特徴とする請求項9に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。 - 鞍乗り型車両は、前記内燃機関の後上方に配置される収納ボックスをさらに備え、
前記冷却ダクトは、前記無段変速機に接続される樹脂製ダクトと、当該樹脂製ダクトに接続されるとともに前記収納ボックスに接続されるゴム製ダクトから構成されていることを特徴とする請求項10に記載の鞍乗り型車両の無段変速機冷却ダクト配置構造。
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CN200980108999.9A CN101970285B (zh) | 2008-03-18 | 2009-02-17 | 鞍乘型车辆的无级变速器冷却导管布置结构 |
BRPI0910302A BRPI0910302A2 (pt) | 2008-03-18 | 2009-02-17 | estrutura de layout do duto de esfriamento da transmissão continuamente variável para veículo do tipo de montar |
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JP2008-068821 | 2008-03-18 | ||
JP2008069081A JP5172406B2 (ja) | 2008-03-18 | 2008-03-18 | 鞍乗り型車両のエンジン懸架構造 |
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JP2012077832A (ja) * | 2010-09-30 | 2012-04-19 | Honda Motor Co Ltd | 鞍乗型車両のパワーユニット |
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JPH11171079A (ja) * | 1997-12-15 | 1999-06-29 | Suzuki Motor Corp | スクータ型車両のベルト自動変速機冷却装置 |
JP2007062715A (ja) * | 2005-08-01 | 2007-03-15 | Yamaha Motor Co Ltd | 鞍乗型車両 |
JP2007062716A (ja) * | 2005-08-01 | 2007-03-15 | Yamaha Motor Co Ltd | 鞍乗型車両 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH11171079A (ja) * | 1997-12-15 | 1999-06-29 | Suzuki Motor Corp | スクータ型車両のベルト自動変速機冷却装置 |
JP2007062715A (ja) * | 2005-08-01 | 2007-03-15 | Yamaha Motor Co Ltd | 鞍乗型車両 |
JP2007062716A (ja) * | 2005-08-01 | 2007-03-15 | Yamaha Motor Co Ltd | 鞍乗型車両 |
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JP2012077832A (ja) * | 2010-09-30 | 2012-04-19 | Honda Motor Co Ltd | 鞍乗型車両のパワーユニット |
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BRPI0910302A2 (pt) | 2015-10-06 |
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