WO2022210757A1 - 鞍乗り型車両 - Google Patents
鞍乗り型車両 Download PDFInfo
- Publication number
- WO2022210757A1 WO2022210757A1 PCT/JP2022/015623 JP2022015623W WO2022210757A1 WO 2022210757 A1 WO2022210757 A1 WO 2022210757A1 JP 2022015623 W JP2022015623 W JP 2022015623W WO 2022210757 A1 WO2022210757 A1 WO 2022210757A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- space
- cleaner case
- vehicle
- air cleaner
- intake
- Prior art date
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- 239000002828 fuel tank Substances 0.000 claims description 101
- 239000000446 fuel Substances 0.000 description 15
- 239000000945 filler Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- B62J35/00—Fuel tanks specially adapted for motorcycles or engine-assisted cycles; Arrangements thereof
-
- 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
- B62J40/00—Arrangements of air cleaners specially adapted for cycles
- B62J40/10—Arrangements of air cleaners specially adapted for cycles characterised by air duct arrangements
-
- 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
- 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
- B62K11/06—Frames characterised by the engine being between front and rear wheels the frame being of single-beam type
- B62K11/08—Frames characterised by the engine being between front and rear wheels the frame being of single-beam type the beam being fabricated from sheet metal, e.g. forming fuel tank walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
Definitions
- the present invention relates to a saddle-ride type vehicle.
- the shape of the intake duct is optimized and the capacity of the air cleaner case is increased for the purpose of increasing the output of the engine by improving the intake efficiency of the intake system.
- the intake efficiency of the air intake device it becomes difficult to improve the intake efficiency of the air intake device by the above-described measures.
- a straddle-type vehicle includes an air cleaner case, an intake duct whose downstream end is connected to the air cleaner case, a throttle device that adjusts the amount of intake air, and a connecting tube that connects the air cleaner case and the throttle device.
- a saddle-ride type vehicle comprising an intake device and an engine to which the intake device is connected, wherein the axis of the cylinder portion of the engine extends substantially horizontally in the longitudinal direction of the vehicle. and the vehicle body is provided with an outside air intake opening for taking outside air into the space above the engine and in front of the space as viewed from the side of the vehicle.
- the air intake duct may extend rearward from the air cleaner case, and the air intake port may open rearward.
- a fuel tank and a cover covering the fuel tank from above may be provided, and the space may be a space sandwiched between the fuel tank and the cover.
- the cover covers the air intake duct from above, the cover includes a guide portion that bulges upward so as to avoid the air intake duct, and the guide portion is an axis of the air intake duct. and extending in a direction to cover the air intake duct from above, and the guide portion may extend further upstream than the upstream end of the air intake duct.
- the vehicle body may be a vehicle body frame that supports the engine, and the space may be a space surrounded by plate members forming the vehicle body frame.
- an opening that opens upward may be provided in the upper surface of the vehicle body frame, and the space may be located below the opening and overlap the opening when viewed from above. Further, in the above configuration, the opening may be covered from above with a passenger seat.
- the air cleaner case is arranged inside the vehicle body frame, and at least a part of the air cleaner case overlaps the opening when viewed from above, and when viewed from the side of the vehicle, the air cleaner case
- the front end of the air cleaner case may be positioned below the rear end.
- a battery storage section for storing a battery may be provided on the upper surface of the air cleaner case.
- the vehicle body is a vehicle body frame
- the engine is arranged below the vehicle body frame
- the throttle device is arranged in a space vertically sandwiched between the vehicle body frame and the engine
- the connecting tube extends forward from the air cleaner case through the outside air intake port and is connected to the throttle device, and the throttle device is positioned below an upper edge of the outside air intake port in the vertical direction of the vehicle. may be placed.
- the space is surrounded from the rear by the rear end portion of the vehicle body frame, and the intake port of the intake duct opens rearward in the space provided at the rear portion of the vehicle body frame.
- the engine includes a crankcase and the cylinder portion extending forward from the front surface of the crankcase, and the outside air intake is an opening provided in the vehicle body frame,
- the crankcase may be open toward the front of the vehicle, and the crankcase may overlap the outside air intake port from below in a plan view.
- a straddle-type vehicle includes an air cleaner case, an intake duct whose downstream end is connected to the air cleaner case, a throttle device that adjusts the amount of intake air, and an intake device that includes a connecting tube that connects the air cleaner case and the throttle device.
- an engine to which an intake device is connected the axis of the engine cylinder portion extends substantially horizontally in the longitudinal direction of the vehicle, the intake port at the upstream end of the intake duct opens in the space inside the vehicle body, and the vehicle body is , an outside air intake opening for taking outside air into the space is provided above the engine and in front of the space as viewed from the side of the vehicle.
- outside air flowing in from the outside air intake port accumulates in the space inside the vehicle body, and the air intake duct sucks in the accumulated outside air, so that the air intake device can perform stable intake. Furthermore, since the outside air intake port is positioned above the engine, the axis of the cylinder portion of which extends substantially horizontally in the longitudinal direction of the vehicle, it is possible to prevent the engine from interfering with the outside air flowing through the outside air intake port. Therefore, it is possible to improve the intake efficiency of the intake device and increase the output of the engine.
- the air intake duct may extend rearward from the air cleaner case, and the air intake port may open rearward.
- outside air enters the space through the outside air intake port in front of the space and is sucked into the intake duct through the intake port that opens rearward. Therefore, the air intake path from the outside air intake to the air intake becomes long, making it difficult for dust to enter the air intake.
- a fuel tank and a cover covering the fuel tank from above may be provided, and the space may be a space sandwiched between the fuel tank and the cover. According to this configuration, the space can be provided with a simple structure using the fuel tank and the fuel tank cover.
- the cover covers the air intake duct from above, the cover includes a guide portion that bulges upward so as to avoid the air intake duct, and the guide portion extends in the axial direction of the air intake duct. may be covered from above, and the guide portion may extend further upstream than the upstream end of the intake duct. According to this configuration, the intake air can be guided to the intake port by the guide portion of the cover that extends further upstream than the intake port at the upstream end of the intake duct. Therefore, the intake efficiency of the intake device is good.
- the vehicle body may be a vehicle body frame that supports the engine, and the space may be a space surrounded by plate members forming the vehicle body frame. According to this configuration, the space can be provided with a simple structure using the plate member that constitutes the vehicle body frame.
- the upper surface of the vehicle body frame may be provided with an opening that opens upward, and the space may be located below the opening and overlap the opening when viewed from above. According to this configuration, the space can be accessed from the opening on the upper surface of the vehicle body frame, and the maintainability of the air intake device is good. Further, in the above configuration, the opening may be covered from above with a passenger seat. According to this configuration, since the opening in the upper surface of the vehicle body frame is covered with the sheet, outside air can be collected in the space, and air intake efficiency is good. By separating the seat from the opening as necessary, the space can be accessed through the opening, and the air intake device can be easily maintained.
- the air cleaner case is arranged inside the vehicle body frame, and when viewed from above, at least a portion of the air cleaner case overlaps the opening. The portion may be located below the rear end portion.
- the air cleaner case can be arranged using the space inside the vehicle body frame.
- the air cleaner case can be accessed through the opening, making maintenance easier.
- the upper surface of the air cleaner case may be provided with a battery storage section for storing a battery. According to this configuration, the battery can be accommodated with a simple structure using the upper surface of the air cleaner case.
- the vehicle body is a vehicle body frame
- the engine is arranged below the vehicle body frame
- the throttle device is arranged in a space vertically sandwiched between the vehicle body frame and the engine
- the connecting tube is an air cleaner.
- the throttle device may extend forward from the case through the outside air intake port and be connected to the throttle device, and the throttle device may be arranged below the upper edge of the outside air intake port in the vertical direction of the vehicle.
- the outside air intake port can be provided with a simple structure using the opening through which the connecting tube passes forward.
- the throttle device is arranged below the upper edge of the outside air intake, the outside air can flow smoothly between the upper edge of the outside air intake and the throttle device in the vertical direction. Therefore, the outside air can be efficiently flowed into the space from the outside air intake port, and the intake efficiency is good.
- the space may be surrounded from the rear by the rear end portion of the vehicle body frame, and the intake port of the intake duct may open rearward in the space provided at the rear portion of the vehicle body frame.
- the space is closed by the rear end portion of the vehicle body frame, so that outside air can be efficiently stored in the space. Therefore, the intake efficiency of the intake device is good.
- the engine includes a crankcase and a cylinder portion extending forward from the front surface of the crankcase, and the outside air intake is an opening provided in the vehicle body frame facing forward of the vehicle. When open and viewed in plan, the crankcase may overlap the outside air intake from below. According to this configuration, the outside air flowing along the cylinder portion and the crankcase can be taken in from the outside air intake port, and the intake efficiency is good.
- FIG. 1 is a left side view of a motorcycle according to an embodiment of the invention.
- FIG. 2 is a left side view of the vehicle body frame.
- FIG. 3 is a plan view of the vehicle body frame viewed from above.
- FIG. 4 is a perspective view of the vehicle body frame viewed from the lower left side.
- FIG. 5 is a cross-sectional view of the motorcycle cut at the center in the vehicle width direction.
- FIG. 6 is a sectional view showing the arrangement of the air cleaner case, fuel tank, and battery.
- FIG. 7 is a left side view of the air cleaner case.
- FIG. 8 is a side view showing the arrangement of parts inside the internal space.
- FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 5.
- FIG. 5 is a cross
- FR indicates the front of the vehicle body
- UP indicates the upper side of the vehicle body
- LH indicates the left side of the vehicle body.
- FIG. 1 is a left side view of a motorcycle 1 according to an embodiment of the invention.
- the motorcycle 1 includes a body frame 10 (body), an engine 11 supported by the body frame 10, a front fork 12 steerably supporting a front wheel 2, a swing arm 13 supporting a rear wheel 3, and an occupant.
- the vehicle is equipped with a seat 14 of The motorcycle 1 is a saddle-riding type vehicle in which a rider straddles a seat 14 and sits thereon.
- the seat 14 is provided above the rear portion of the vehicle body frame 10 .
- FIG. 1 and 2 is a left side view of the body frame 10.
- the body frame 10 includes a head pipe 15 provided at the front end of the body frame 10, a main frame 16 extending rearward from the head pipe 15 to the rear portion of the motorcycle 1, and a main frame 16. a pivot frame 17 extending downwardly from the rear of the .
- the main frame 16 includes a tubular rear extension portion 18 extending rearward from the head pipe 15 and a seat frame portion 19 extending rearward from the rear end of the rear extension portion 18 .
- the seat frame portion 19 has a vertical length greater than that of the rearward extension portion 18 and bulges downward with respect to the rearward extension portion 18 .
- the pivot frame 17 extends downward from the lower end of the seat frame portion 19 .
- the seat 14 is supported by the seat frame portion 19 .
- the seat 14 covers the upper surface of the seat frame portion 19 from above.
- the front fork 12 is supported so as to be steerable left and right via a steering shaft (not shown) inserted through the head pipe 15 .
- the front wheel 2 is supported by an axle 2 a provided at the lower end of the front fork 12 .
- a steering handle 21 is attached to the upper end of the front fork 12 .
- the swing arm 13 is supported by a pivot shaft 22 supported by the pivot frame 17 .
- the pivot shaft 22 is a shaft extending horizontally in the vehicle width direction (horizontal direction).
- a pivot shaft 22 is inserted through the front end of the swing arm 13 .
- the swing arm 13 swings up and down around the pivot shaft 22 .
- the rear wheel 3 is supported by an axle 3 a provided at the rear end of the swing arm 13 .
- a reaction 23 is spanned between the rear portion of the swing arm 13 and the rear portion of the seat frame portion 19 .
- the engine 11 is arranged below the main frame 16 behind the front wheels 2 and in front of the pivot frame 17 .
- the engine 11 is an internal combustion engine that includes a crankcase 31 that houses a crankshaft 30 that extends in the vehicle width direction, and a cylinder portion 32 that extends forward from the front surface of the crankcase 31 .
- the engine 11 is a horizontal engine in which the axis 32a of the cylinder portion 32 extends substantially horizontally in the vehicle front-rear direction when viewed from the side of the vehicle.
- a piston (not shown) connected to the crankshaft 30 reciprocates back and forth within the cylinder portion 32 along an axis 32a.
- a transmission (not shown) that decelerates and outputs the rotation of the crankshaft 30 is housed in the rear portion of the crankcase 31 .
- the output shaft of this transmission and the rear wheels 3 are connected by a drive chain 33 .
- An exhaust pipe 35 of the engine 11 extends rearward from an exhaust port provided on the lower surface of the cylinder portion 32 .
- a muffler 36 is connected to the rear end of the exhaust pipe 35 .
- An intake device 37 that supplies intake air to the engine 11 includes an air cleaner case 38 , a throttle device 39 connected to the cylinder portion 32 , and a connecting tube 40 that connects the air cleaner case 38 and the throttle device 39 .
- the fuel tank 41 is arranged below the air cleaner case 38 .
- a battery 42 that supplies electric power to each part of the motorcycle 1 is supported by the air cleaner case 38 .
- a step 43 on which an occupant puts his/her foot is supported by the pivot frame 17 via a step holder 44 .
- a storage box 45 capable of storing parts and articles is attached to the outer surface of the seat frame portion 19 .
- the headlight 46 is arranged in front of the head pipe 15 .
- the front fender 47 is attached to the front fork 12 .
- a rear fender 48 that covers the rear wheel 3 from above is attached to the seat frame portion 19 .
- FIG. 3 is a plan view of the vehicle body frame 10 viewed from above.
- FIG. 4 is a perspective view of the vehicle body frame 10 viewed from the lower left side. 2 to 4, the main frame 16 is formed like a hollow case by connecting a plurality of plate members.
- the main frame 16 includes a left side plate member 51 (plate member) forming the left side surface of the main frame 16 and a right side plate member 52 (plate member) forming the right side surface of the main frame 16.
- the left side plate member 51 and the right side plate member 52 are provided substantially symmetrically.
- the main frame 16 includes a lower plate member 53 forming a lower surface portion of the front portion of the main frame 16 , a rear plate member 54 (rear wall) forming a rear surface portion of the main frame 16 , and a rear surface portion of the main frame 16 . and a second rear plate member 55 that constitutes the upper part of the.
- the rear extending portion 18 of the main frame 16 joins the upper edge of the left plate member 51 and the upper edge of the right plate member 52 together, and also connects the lower edge of the left plate member 51 and the lower edge of the right plate member 52 together. By connecting them in the vehicle width direction with the lower plate member 53, they are formed in a tube shape extending in the front-rear direction. The opening at the front end of the rear extension 18 is closed by the rear surface of the head pipe 15 .
- the seat frame portion 19 of the main frame 16 connects the rear edge of the left side plate member 51 and the rear edge of the right side plate member 52 with the rear side plate member 54 in the vehicle width direction, and also connects the rear portion of the left side plate member 51 and the right side plate member.
- 52 is connected in the vehicle width direction by a second rear plate member 55 to form a hollow case shape.
- the rear side plate member 54 is inclined rearwardly upward as viewed from the side of the vehicle.
- the opening 56 is provided with an opening portion 56 that opens upward.
- the opening 56 extends longer in the vehicle front-rear direction than in the vehicle width direction in plan view.
- the opening 56 is provided by cutting out the upper portion of the left side plate member 51 and the upper portion of the right side plate member 52 .
- An internal space 57 surrounded by the left side plate member 51 , the right side plate member 52 , the rear side plate member 54 and the second rear plate member 55 is formed inside the seat frame portion 19 .
- the internal space 57 is exposed upward from the opening 56 .
- the left side plate member 51 and the right side plate member 52 are side walls that divide the internal space 57 in the vehicle width direction.
- the rear side plate member 54 is a rear wall that covers the internal space 57 from behind.
- the second rear plate member 55 integrally includes a rear wall portion 55a forming the upper portion of the rear surface of the seat frame portion 19 and an upper wall portion 55b forming the upper surface of the rear end portion 19a of the seat frame portion 19.
- the upper wall portion 55b connects the upper edge of the rear end portion of the left side plate member 51 and the upper edge of the rear end portion of the right side plate member 52 in the vehicle width direction.
- the upper wall portion 55 b is provided behind the opening portion 56 .
- a rear end portion 19a of the seat frame portion 19 is formed in a bag shape with a closed rear surface of the rear end portion 19a.
- the rear end portion 19 a is located behind the opening 56 .
- the rear end portion 19 a also serves as the rear end portion of the vehicle body frame 10 .
- the rear end portion 19 a is configured by the rear end portion of the left side plate member 51 , the rear end portion of the right side plate member 52 , the rear end portion of the rear side plate member 54 , and the second rear plate member 55 .
- a rear end portion 19a of the seat frame portion 19 is closed by a second rear plate member 55 and does not open rearward.
- An engine hanger portion 60 is provided at the front end portion of the seat frame portion 19 and extends downward from the rear end portion of the rear extension portion 18 .
- the engine hanger portion 60 is provided under the front end portion of the left side plate member 51 and the front end portion of the right side plate member 52, respectively.
- An upper portion of the crankcase 31 ( FIG. 5 ) is fastened to the engine hanger portion 60 .
- the lower plate member 53 integrally includes a lower wall portion 53a forming the lower surface portion of the rear extension portion 18 and a front wall portion 53b extending downward from the rear end of the lower wall portion 53a.
- the front wall portion 53b is a wall portion facing the vehicle front side, and connects the front edges of the left and right engine hanger portions 60 to each other in the vehicle width direction.
- the front wall portion 53b is provided with an outside air intake port 61 that penetrates the front wall portion 53b in the vehicle front-rear direction.
- the outside air intake port 61 is an opening provided by cutting the front wall portion 53b upward from the lower edge of the front wall portion 53b.
- the outside air intake port 61 opens toward the front of the vehicle.
- a portion of the lower surface of the seat frame portion 19 between the front wall portion 53b and the rear side plate member 54 in the vehicle front-rear direction is an open portion 63 that opens downward.
- the open portion 63 exposes the internal space 57 downward.
- the pivot frame 17 includes a pair of left and right side wall portions 17a and a wall portion 17b connecting rear edges of the side wall portions 17a in the vehicle width direction.
- the upper edge of the left side wall portion 17a of the pivot frame 17 is connected to the rear portion of the lower edge of the left side plate member 51 of the seat frame portion 19, and the upper edge of the right side wall portion 17a is connected to the right side plate of the seat frame portion 19. It is joined to the rear portion of the lower edge of member 52 .
- the wall portion 17b is inclined rearwardly upward as viewed from the side of the vehicle.
- a rear side plate member 54 forming the rear surface of the seat frame portion 19 extends rearwardly upward continuously from the upper end of the wall portion 17b.
- the wall portion 17b covers the rear portion of the open portion 63 from below.
- Upper and lower portions of the rear portion of the crankcase 31 (FIG. 5) are fastened to the left and right side wall portions 17a.
- FIG. 5 is a cross-sectional view of the motorcycle 1 cut at the center in the vehicle width direction.
- FIG. 6 is a sectional view showing the arrangement of the air cleaner case 38, the fuel tank 41, and the battery 42. As shown in FIG. 1 to 5, the air cleaner case 38, fuel tank 41, and battery 42 are housed in an internal space 57 within the seat frame portion 19. As shown in FIG. The seat 14 is provided so as to be vertically rotatable around a hinge portion at the front end of the seat 14 .
- the fuel tank 41 is a hollow container elongated in the longitudinal direction of the vehicle.
- the fuel tank 41 is arranged in the inner space 57 above the pivot frame 17 , behind the outside air intake 61 and in front of the rear side plate member 54 .
- the fuel tank 41 is supported by the seat frame portion 19 .
- the fuel tank 41 is disposed rearwardly upward of the crankcase 31 of the engine 11 in a rearwardly raised posture as viewed from the side of the vehicle. Therefore, the front end portion 41a of the fuel tank 41 is positioned below the rear end portion 41b of the fuel tank 41 when viewed from the side of the vehicle.
- the fuel in the fuel tank 41 decreases, the fuel in the fuel tank 41 gathers on the side of the front end portion 41a which is closer to the engine 11 and located at a lower position. Therefore, the mass of the motorcycle 1 can be concentrated, and the center of gravity of the motorcycle can be lowered.
- the fuel tank 41 is disposed in the internal space 57 so that the lower surface of the fuel tank 41 is inclined upward to the rear so that the lower surface of the fuel tank 41 is along the rear side plate member 54 .
- the fuel tank 41 can be arranged in the internal space 57 in a compact manner.
- the rear plate member 54 covers the rear wheel 3 from above.
- the rear side plate member 54 is inclined rearwardly upward along the upper surface of the front portion of the rear wheel 3 .
- the fuel tank 41 is formed by connecting a lower half body 65 forming a lower portion of the fuel tank 41 and an upper half body 66 forming an upper portion of the fuel tank 41 .
- the fuel tank 41 has a flange portion 67 in which a lower flange portion provided at the upper edge of the lower half body 65 and an upper flange portion provided at the lower edge of the upper half body 66 are joined together.
- the lower half body 65 and the upper half body 66 are welded at the flange portion 67 and integrated.
- the flange portion 67 is a plate-like portion that protrudes from the outer peripheral surface of the fuel tank 41 and is provided so as to encircle the outer peripheral surface of the fuel tank 41 .
- the portions of the flange portion 67 located on the left and right side surfaces of the fuel tank 41 extend linearly in a rearward upward posture.
- the upper surface portion 41c of the fuel tank 41 is inclined rearwardly upward as viewed from the side of the vehicle.
- a fuel filler port 41d is provided at the rear portion of the upper surface portion 41c.
- the fuel filler port 41d is a tubular portion protruding upward from the upper surface portion 41c.
- An upper end opening of the fuel filler port 41d is closed with a cap 41e.
- a fuel pump 41f is attached to the front portion of the upper surface portion 41c. The fuel pump 41f supplies the fuel in the fuel tank 41 to the cylinder portion 32 through a fuel hose (not shown).
- FIG. 7 is a left side view of the air cleaner case 38.
- FIG. FIG. 7 shows a cross section of part of the air cleaner case 38 .
- FIG. 8 is a side view showing the arrangement of parts inside the internal space 57. As shown in FIG. In FIG. 8, a cross section of a part of the seat frame portion 19 is illustrated. 5 to 8, the air cleaner case 38 has a box shape elongated in the front-rear direction when viewed from the side of the vehicle.
- the air cleaner case 38 is arranged adjacent to the fuel tank 41 and above the front of the fuel tank 41 .
- the air cleaner case 38 is arranged in a rear-up posture as viewed from the side of the vehicle. Therefore, the front end portion 38a of the air cleaner case 38 is located below the rear end portion 38b of the air cleaner case 38 when viewed from the side of the vehicle. Specifically, the air cleaner case 38 is arranged in a rearwardly raised posture so that the lower surface portion 38c of the air cleaner case 38 is aligned with the upper surface portion 41c of the fuel tank 41 when viewed from the side of the vehicle.
- the air cleaner case 38 includes a case body portion 70 and a lid portion 71 attached to the top surface of the rear portion of the case body portion 70 .
- the case main body portion 70 has a box-like shape arranged upwardly rearward when viewed from the side of the vehicle.
- a case opening 70 a that opens upward is provided at the rear portion of the upper surface of the case main body 70 .
- the lid portion 71 has a box shape in which substantially the entire lower surface of the lid portion 71 is open. The lid portion 71 is attached to the rear portion of the upper surface of the case body portion 70 to cover the case opening portion 70a.
- a plate-shaped filter 72 that purifies the outside air (intake air) is provided inside the air cleaner case 38 .
- the filter 72 is sandwiched between the lower edge of the lid portion 71 and the peripheral edge of the case opening 70a to block the case opening 70a.
- the intake device 37 has an intake duct 73 connected to the air cleaner case 38 . Outside air flows into the air cleaner case 38 as intake air through the intake duct 73 . A downstream end of the intake air flow in the intake duct 73 is connected to the rear surface portion 71 a of the lid portion 71 .
- the air intake duct 73 has a tubular shape extending in the vehicle front-rear direction. An opening at the rear end of the intake duct 73 is an intake port 73a serving as an entrance for intake air.
- the intake port 73 a is the upstream end of the intake air flow in the intake duct 73 .
- the interior of the air cleaner case 38 is divided into a dirty side 38 d on the upstream side of the filter 72 and a clean side 38 e on the downstream side of the filter 72 .
- Dirty side 38 d is the space within lid 71 above filter 72 .
- the intake duct 73 communicates with the dirty side 38d.
- the clean side 38 e is a space within the case main body 70 below the filter 72 .
- a connecting tube 40 is connected to the lower portion of the front surface of the case body portion 70 .
- the connecting tube 40 extends forward and downward from the case main body 70, and the downstream end of the connecting tube 40 is connected to the throttle device 39 (FIG. 5).
- Outside air is sucked into the intake duct 73 from the intake port 73a and flows into the dirty side 38d.
- Intake air (outside air) at the dirty side 38 d passes through the filter 72 and is purified, then flows to the clean side 38 e and flows through the connecting tube 40 to the throttle device 39 .
- a protective cover 49 is attached to the throttle device 39.
- the protective cover 49 is formed in the shape of a case that covers the throttle device 39 from the front, left and right sides, and from above. Ventilation holes 49 a are provided on the left and right side surfaces of the protective cover 49 to allow air to flow inside the protective cover 49 .
- a battery housing portion 74 for housing the battery 42 is provided on the top surface of the front portion of the air cleaner case 38 .
- the battery housing portion 74 is a concave portion in which the upper surface portion of the front portion of the air cleaner case 38 is recessed downward with respect to the upper surface portion of the rear portion of the air cleaner case 38 .
- the top surface of the rear portion of the air cleaner case 38 is the top surface portion of the lid portion 71
- the top surface portion of the front portion of the air cleaner case 38 is the top surface portion of the case body portion 70 .
- the box-shaped battery 42 is placed on the bottom surface 74 a of the battery storage section 74 and supported by the battery storage section 74 .
- the bottom surface 74a is inclined rearwardly upward.
- the battery 42 is arranged forwardly and upwardly with respect to the fuel tank 41 and the air cleaner case 38 as viewed from the side of the vehicle.
- the battery housing portion 74 includes a front wall portion 74b that abuts on the front surface of the battery 42, and a pair of left and right side wall portions 74c that cover the battery 42 from left and right sides, respectively.
- the air cleaner case 38 is sandwiched between the battery 42 and the fuel tank 41 as viewed from the side of the vehicle.
- the air cleaner case 38 is positioned between the battery 42 and the fuel tank 41 in the longitudinal direction of the vehicle. Also, the air cleaner case 38 is positioned between the battery 42 and the fuel tank 41 in the vertical direction.
- the battery 42 is positioned forwardly and upwardly of the air cleaner case 38, and when viewed from the side of the vehicle, substantially the entire battery 42 overlaps the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle.
- the fuel tank 41 is positioned rearwardly and downwardly of the air cleaner case 38, and its front portion overlaps the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle.
- FIG. 6 shows a horizontal line L1 passing through the upper end of the air cleaner case 38, a horizontal line L2 passing through the lower end of the air cleaner case 38, a vertical line L3 passing through the front end of the air cleaner case 38, and a vertical line passing through the rear end of the air cleaner case 38.
- a line L4 is shown.
- the battery 42 and the fuel tank 41 are positioned within a rectangular area 75 surrounded by a horizontal line L1, a horizontal line L2, a vertical line L3, and a vertical line L4 when viewed from the side of the vehicle. That is, the battery 42 and the fuel tank 41 are arranged compactly by utilizing the space above the front and below the rear of the air cleaner case 38 which is arranged rearward upward.
- FIG. 6 also shows a vertical line L5 passing through the rear end of the battery 42 and a horizontal line L6 passing through the lower end of the battery 42.
- the vertical line L5 overlaps the front portion of the fuel tank 41 and the horizontal line L6 overlaps the upper portion of the fuel tank 41 . That is, at least a portion of the battery 42 overlaps the fuel tank 41 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle. Therefore, the battery 42, the air cleaner case 38, and the fuel tank 41 can be arranged compactly in the longitudinal direction and the vertical direction of the vehicle.
- An air cleaner case 38 is sandwiched between the battery 42 and the fuel tank 41 .
- the air cleaner case 38 functions as a cushioning material for the battery 42 and the fuel tank 41 even if the motorcycle 1 receives a large external impact. Therefore, contact between the battery 42 and the fuel tank 41 can be avoided when the motorcycle 1 receives an impact from the outside.
- the air cleaner case 38 has a hollow box shape, it has a high shock absorbing property. Since the battery 42 and the fuel tank 41 overlap the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle, the battery 42, the air cleaner case 38, and the fuel tank 41 can be arranged compactly.
- a cylindrical canister 76 (FIG. 8) for adsorbing evaporated fuel in the fuel tank 41 is arranged between the upper surface portion 41c of the front end portion 41a of the fuel tank 41 and the lower surface portion 38c of the front portion of the air cleaner case 38. .
- the canister 76 is arranged offset to one of the left and right sides (left side) with respect to the central portion in the vehicle width direction.
- FIG. 9 is a top plan view of the rear portion of the motorcycle 1 with the seat 14 opened.
- the motorcycle 1 includes a front cover 77 covering the air cleaner case 38 from above, and a tank cover 78 (cover) behind the front cover 77 covering the fuel tank 41 from above.
- the front cover 77 and the tank cover 78 are arranged in the opening 56 on the upper surface of the seat frame portion 19 to close the opening 56 .
- the seat 14 covers the front cover 77, the tank cover 78, and the opening 56 from above. When the seat 14 is opened by rotating it upward as shown in FIG. 9, the front cover 77 and the tank cover 78 are exposed upward.
- the tank cover 78 covers the rear portion of the upper surface portion 41c of the fuel tank 41 from above.
- a hole 78a is provided in the center of the tank cover 78 in the vehicle width direction.
- a filler port 41d of the fuel tank 41 is exposed above the tank cover 78 through the hole 78a.
- the tank cover 78 receives the spilled fuel during refueling to the refueling port 41d.
- FIG. 10 is a plan view showing a state in which the front cover 77 and the tank cover 78 are removed from FIG. 9.
- FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 5.
- FIG. 8 to 11 the interior space 57 of the seat frame portion 19 is surrounded in the vehicle width direction by the left side plate member 51 and the right side plate member 52 of the body frame 10, and the upper surface portion 41c of the fuel tank 41 is provided.
- the tank cover 78 form a space 80 which is vertically enclosed. Further, the space 80 is surrounded in the front-rear direction by the rear surface portion 71 a of the lid portion 71 and the rear wall portion 55 a of the rear end portion of the vehicle body frame 10 .
- the space 80 is positioned below the opening 56 on the upper surface of the seat frame portion 19 and overlaps the opening 56 when viewed from above.
- the front cover 77 can be removed from the tank cover 78, and the front cover 77 may be omitted. In this case, the air (outside air) from the front of the vehicle can smoothly flow into the space 80 through the gap between the upper surface of the air cleaner case 38 and the tank cover 78, and the space 80 can be filled with air.
- the downstream end of the air intake duct 73 is offset to one side (left side) in the vehicle width direction on the rear surface portion 71 a of the lid portion 71 .
- Air intake duct 73 is arranged in space 80 .
- the air intake duct 73 extends outward and rearward in the vehicle width direction from the rear surface portion 71 a of the lid portion 71 .
- An intake port 73 a of the intake duct 73 opens rearward within the space 80 .
- the intake port 73a is positioned between the left side plate member 51 and the fuel filler port 41d in the vehicle width direction.
- the intake port 73a is positioned between the upper surface portion 41c of the fuel tank 41 and the tank cover 78 in the vertical direction.
- the intake port 73a is positioned between the rear surface portion 71a of the lid portion 71 and the rear wall portion 55a in the front-rear direction.
- the intake port 73a is located forward of the rear end 41g of the upper surface portion 41c of the fuel tank 41. As shown in FIG.
- the tank cover 78 covers the intake duct 73 from above.
- the tank cover 78 has a guide portion 78b that protrudes upward so as to avoid the upper portion of the intake duct 73.
- the guide portion 78b extends in the axial direction of the intake duct 73 and covers the intake duct 73 from above.
- the guide portion 78b has an arcuate shape that bulges upward along the outer periphery of the air intake duct 73 when viewed in the axial direction of the air intake duct 73 as shown in FIG.
- the guide portion 78b extends rearward on the upstream side of the intake port 73a.
- the guide portion 78 b continues from the front edge of the tank cover 78 to the left edge of the rear portion of the tank cover 78 .
- the lid portion 71 of the air cleaner case 38 and the battery 42 overlap the opening 56 on the upper surface of the seat frame portion 19 when viewed from above, and are exposed upward through the opening 56 . Therefore, when the front side cover 77 and the tank cover 78 are removed, the air cleaner case 38 and the battery 42 can be easily accessed through the opening 56, which facilitates maintenance.
- the lid portion 71 fastened to the case body portion 70 is removed from the case body portion 70 by releasing the fastening. When the lid portion 71 is removed, the filter 72 is exposed. Therefore, maintenance of the filter 72 is easy.
- the connecting tube 40 extends forward from the front surface of the air cleaner case 38, passes through an outside air intake 61 provided at the lower front surface of the seat frame portion 19, and extends outside the internal space 57. extends to That is, the outside air intake port 61 functions as an opening for passing the connecting tube 40 forward.
- the outside air intake 61 is positioned above the engine 11 and in front of the space 80 .
- the space 80 is located behind and above the outside air intake 61 .
- the throttle device 39 is arranged in a space vertically sandwiched between the rear extension portion 18 of the main frame 16 and the cylinder portion 32 of the engine 11 as viewed from the side of the vehicle.
- a connecting tube 40 extending forward from the outside air intake port 61 extends forward and downward between the upper surface of the engine 11 and the lower surface of the rear extension portion 18 and is connected to the throttle device 39 .
- the crankcase 31 overlaps the outside air intake 61 from below, and overlaps the outside air intake 61, which is a notch portion with an open lower edge, from below. That is, the upper surface of the crankcase 31 closes the open portion of the lower edge of the outside air intake port 61 in a front view.
- the outside air W that has flowed into the space 80 from the front is folded forward and flows into the intake port 73a that opens rearward. Therefore, dust contained in the outside air W is less likely to enter the intake port 73a.
- Part of the outside air W flowing through the internal space 57 is guided by the flange portion 67 of the fuel tank 41 and flows rearward and upward to flow into the space 80 . For this reason, the outside air W can be easily accumulated in the space 80 .
- Part of the outside air W that has flowed into the space 80 is guided by the guide portion 78b behind the intake port 73a and flows into the intake port 73a. Therefore, the outside air W can efficiently flow to the intake port 73a.
- the rear side plate member 54 is inclined rearwardly upward when viewed from the side of the vehicle, and the tank cover 78 is substantially horizontal. Therefore, the outside air W tends to accumulate in the space 80 located at the rear of the internal space 57 .
- the motorcycle 1 includes the air cleaner case 38, the air intake duct 73 whose downstream end is connected to the air cleaner case 38, and the throttle device for adjusting the air intake amount. 39, an intake device 37 having a connecting tube 40 that connects the air cleaner case 38 and the throttle device 39, and an engine 11 to which the intake device 37 is connected.
- an intake port 73a at the upstream end of the intake duct 73 opens in a space 80 inside the body frame 10 as the vehicle body, and the body frame 10 is positioned above the engine 11 when viewed from the side of the vehicle.
- an outside air intake port 61 for taking outside air into the space 80 is provided in front of the space 80 .
- the outside air W flowing in from the outside air intake port 61 accumulates in the space 80 inside the body frame 10, and the air intake duct 73 sucks in the accumulated outside air W, so that the air intake device 37 performs stable intake. be able to.
- the outside air intake port 61 is positioned above the engine 11 in which the axis 32a of the cylinder portion 32 extends substantially horizontally in the longitudinal direction of the vehicle, the engine 11 is prevented from interfering with the outside air W flowing through the outside air intake port 61. can. Therefore, the intake efficiency of the intake device 37 can be improved and the output of the engine 11 can be increased.
- the air intake duct 73 extends rearward from the air cleaner case 38, and the air intake port 73a opens rearward. According to this configuration, the outside air W enters the space 80 through the outside air intake port 61 in front of the space 80 and is sucked into the intake duct 73 through the intake port 73a that opens rearward. Therefore, the air intake path from the outside air intake port 61 to the air intake port 73a becomes long, making it difficult for dust to enter the air intake port 73a.
- a fuel tank 41 and a tank cover 78 covering the fuel tank 41 from above are provided, and a space 80 is a space sandwiched between the fuel tank 41 and the tank cover 78 . According to this configuration, the space 80 can be provided with a simple structure using the fuel tank 41 and the tank cover 78 .
- the tank cover 78 covers the air intake duct 73 from above, and the tank cover 78 includes a guide portion 78b that protrudes upward so as to avoid the air intake duct 73.
- the guide portion 78b extends in the axial direction of the air intake duct 73. Extending to cover the intake duct 73 from above, the guide portion 78b extends further upstream than the upstream end of the intake duct 73 .
- the guide portion 78b of the tank cover 78 extending further upstream than the intake port 73a at the upstream end of the intake duct 73 can guide the intake air to the intake port 73a. Therefore, the intake efficiency of the intake device 37 is good.
- the vehicle body is the vehicle body frame 10 that supports the engine 11
- the space 80 is a space surrounded by the left side plate member 51 and the right side plate member 52 that are plate members forming the vehicle body frame 10 .
- the space 80 can be provided with a simple structure using the left side plate member 51 and the right side plate member 52 that constitute the vehicle body frame 10 .
- An opening 56 that opens upward is provided in the upper surface of the vehicle body frame 10, and the space 80 is positioned below the opening 56 and overlaps the opening 56 when viewed from above. According to this configuration, the space 80 can be accessed from the opening 56 on the upper surface of the vehicle body frame 10, and maintenance of the air intake device 37 is easy. In addition, the opening 56 is covered from above by the passenger seat 14 . According to this configuration, since the opening 56 on the upper surface of the vehicle body frame 10 is covered with the sheet 14, the outside air W can be stored in the space 80, and the intake efficiency is good. By separating the seat 14 from the opening 56 as necessary, the space 80 can be accessed through the opening 56, and the air intake device 37 can be easily maintained.
- the air cleaner case 38 is arranged inside the vehicle body frame 10 and overlaps at least a portion of the opening 56 when viewed from the top, and the front end of the air cleaner case 38 when viewed from the side of the vehicle.
- the portion 38a is positioned below the rear end portion 38b.
- the air cleaner case 38 can be arranged using the internal space 57 inside the vehicle body frame 10 .
- the air cleaner case 38 can be accessed through the opening 56, which facilitates maintenance.
- a battery housing portion 74 for housing the battery 42 is provided on the upper surface of the air cleaner case 38 . With this configuration, the upper surface of the air cleaner case 38 can be used to accommodate the battery 42 with a simple structure.
- the vehicle body is a body frame 10, the engine 11 is arranged below the body frame 10, the throttle device 39 is arranged in a space vertically sandwiched between the body frame 10 and the engine 11, and the connecting tube 40 is: It extends forward from the air cleaner case 38 through the outside air intake port 61 and is connected to the throttle device 39.
- the throttle device 39 is arranged below the upper edge 61a of the outside air intake port 61 in the vertical direction of the vehicle. According to this configuration, the outside air intake port 61 can be provided with a simple structure using the opening through which the connecting tube 40 is passed forward.
- the throttle device 39 is arranged below the upper edge portion 61a of the outside air intake port 61, the outside air W smoothly flows between the upper edge portion 61a of the outside air intake port 61 and the throttle device 39 in the vertical direction. be able to. Therefore, the outside air W can efficiently flow from the outside air intake port 61 to the space 80, and the intake efficiency is good.
- the space 80 is surrounded from the rear by the rear end portion 19a of the body frame 10, and the intake port 73a of the intake duct 73 opens rearward in the space 80 provided at the rear portion of the body frame 10.
- the space 80 is closed by the rear end portion 19a of the vehicle body frame 10, so that the outside air W can be efficiently stored in the space 80.
- the intake efficiency of the intake device 37 is good.
- the engine 11 also includes a crankcase 31 and a cylinder portion 32 extending forward from the front surface of the crankcase 31.
- the outside air intake port 61 is an opening provided in the vehicle body frame 10 and directed forward of the vehicle. When viewed from above, the crankcase 31 overlaps the outside air intake 61 from below. According to this configuration, the outside air W flowing along the cylinder portion 32 and the crankcase 31 can be taken in from the outside air intake port 61, and the intake efficiency is good.
- the motorcycle 1 includes a battery 42, a fuel tank 41, and an air cleaner case 38 for purifying intake air. , is sandwiched between a battery 42 and a fuel tank 41. At least a portion of the battery 42 overlaps the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle. When viewed from the side, at least a portion overlaps the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle. According to this configuration, the air cleaner case 38 sandwiched between the battery 42 and the fuel tank 41 can be used as a cushioning material, and when the motorcycle 1 receives an external impact, the battery 42 and the fuel tank 41 are separated. Avoid contact. In addition, the battery 42 and the fuel tank 41 overlap the air cleaner case 38 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle.
- the vehicle also has an engine 11 to which fuel is supplied from a fuel tank 41.
- the fuel tank 41 is arranged behind the engine 11 and below the battery 42 and the air cleaner case 38 in the vertical direction. According to this configuration, the fuel tank 41, which becomes a heavy object due to fuel loading, is arranged below the battery 42 and the air cleaner case 38, so that the center of gravity of the motorcycle 1 can be lowered. Further, the fuel tank 41 is provided with the engine 11 to which fuel is supplied from the fuel tank 41 , the fuel tank 41 is arranged behind and above the engine 11 , and the front end portion 41 a of the fuel tank 41 is positioned further than the rear end portion 41 b of the fuel tank 41 . located below. According to this configuration, the center of gravity of the fuel tank 41 can be positioned near the engine 11, and mass concentration can be achieved.
- the lower surface portion 38c of the air cleaner case 38 is arranged along the upper surface portion 41c of the fuel tank 41, and the front end portion 38a of the air cleaner case 38 is positioned below the rear end portion 38b of the air cleaner case 38. .
- the lower surface portion 38c of the air cleaner case 38 is aligned with the upper surface portion 41c of the fuel tank 41, so the air cleaner case 38 can effectively protect the fuel tank 41.
- the battery 42 is fixed to the upper surface of the air cleaner case 38 . With this configuration, the upper surface of the air cleaner case 38 can be used to support the battery 42 with a simple structure.
- the fuel tank 41 is supported by the hollow body frame 10 , and the battery 42 , the fuel tank 41 , and the air cleaner case 38 are housed in an internal space 57 inside the body frame 10 .
- the battery 42, the fuel tank 41, and the air cleaner case 38 can be compactly arranged using the internal space 57 of the vehicle body frame 10, and the battery 42, the fuel tank 41, and the air cleaner case 38 can be arranged by the vehicle body frame 10.
- the air cleaner case 38 can be protected.
- the battery 42, the fuel tank 41, and the air cleaner case 38 can be hidden by the vehicle body frame 10, so that the appearance of the motorcycle 1 is good.
- the body frame 10 also includes a left side plate member 51 and a right side plate member 52, which are a pair of left and right side walls that partition an interior space 57 in the vehicle width direction, and a rear side plate member 54, which is a rear wall that covers the interior space 57 from the rear.
- the rear plate member 54 is a wall portion that covers the rear wheel 3 from above, and is inclined rearwardly upward when viewed from the side of the vehicle.
- the air cleaner case 38 is provided so as to be inclined upward, and the air cleaner case 38 is provided so as to be inclined upward and rearward along the upper surface portion 41c of the fuel tank 41 as viewed from the side of the vehicle. placed above.
- the fuel tank 41 is arranged in a compact manner inside the body frame 10 by slanting the fuel tank 41 along the rear side plate member 54 that covers the rear wheel 3 from above. can.
- the air cleaner case 38 By slanting the air cleaner case 38 rearwardly upward along the upper surface portion 41c of the fuel tank 41, the air cleaner case 38 can be arranged compactly.
- the battery 42 can be arranged compactly by utilizing the space above the front part of the air cleaner case 38 which is inclined rearwardly upward. Further, at least a portion of the battery 42 overlaps the fuel tank 41 in the longitudinal direction and the vertical direction of the vehicle when viewed from the side of the vehicle. According to this configuration, the battery 42, the air cleaner case 38, and the fuel tank 41 can be compactly arranged in the longitudinal direction and the vertical direction of the vehicle.
- the above-described embodiment shows one mode to which the present invention is applied, and the present invention is not limited to the above-described embodiment.
- the space 80 in which the intake port 73a is arranged is the space inside the vehicle body frame 10, but the present invention is not limited to this.
- the space 80 may be, for example, a space inside a vehicle body cover as the vehicle body.
- the outside air intake port 61 is an opening provided in the vehicle body frame 10, but the outside air intake port 61 is not limited to this, and may be an opening provided in a vehicle body cover, for example.
- the motorcycle 1 has been described as an example, but the present invention is not limited to this, and the present invention is a three-wheel saddle-ride type vehicle having two front wheels or two rear wheels. It is applicable to a saddle type vehicle having four or more wheels.
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Abstract
Description
本発明は、上述した事情に鑑みてなされたものであり、吸気装置の吸気効率を向上させてエンジンの出力を増加させることを目的とする。
鞍乗り型車両は、エアクリーナーケース、前記エアクリーナーケースに下流端が接続される吸気ダクト、吸気量を調整するスロットル装置、及び、前記エアクリーナーケースと前記スロットル装置とを接続するコネクティングチューブを備える吸気装置と、前記吸気装置が接続されるエンジンとを備え、前記エンジンのシリンダー部の軸線が略水平に車両前後方向に延びる鞍乗り型車両において、前記吸気ダクトの上流端の吸気口は、車体の内側の空間内で開口し、前記車体は、車両側面視で、前記エンジンの上方且つ前記空間の前方に、前記空間に外気を取り込む外気取り込み口を備えることを特徴とする。
また、上述の構成において、燃料タンクと、前記燃料タンクを上方から覆うカバーとが設けられ、前記空間は、前記燃料タンクと前記カバーとで挟まれた空間であっても良い。
また、上述の構成において、前記車体は、前記エンジンを支持する車体フレームであり、前記空間は、前記車体フレームを構成する板部材で囲まれた空間であっても良い。
また、上述の構成において、前記開口部は、乗員用のシートによって上方から覆われても良い。
さらに、上述の構成において、前記エアクリーナーケースの上面部には、バッテリーを収納するバッテリー収納部が設けられても良い。
また、上述の構成において、前記エンジンは、クランクケースと、前記クランクケースの前面から前方に延出する前記シリンダー部とを備え、前記外気取り込み口は、前記車体フレームに設けられる開口であって、車両前方に向けて開口し、平面視で、前記クランクケースは、前記外気取り込み口に下方から重なっても良い。
この構成によれば、外気取り込み口から流入する外気は、車体の内側の空間に溜まり、この溜まった外気を吸気ダクトが吸い込むため、吸気装置は安定した吸気を行うことができる。さらに、外気取り込み口が、シリンダー部の軸線が略水平に車両前後方向に延びるエンジンの上方に位置するため、エンジンが外気取り込み口に流れる外気の妨げになることを抑制できる。このため、吸気装置の吸気効率を向上させてエンジンの出力を増加させることができる。
この構成によれば、外気は、空間の前方の外気取り込み口から空間に入り、後方に開口する吸気口から吸気ダクトに吸い込まれる。このため、外気取り込み口から吸気口までの吸気の経路が長くなり、塵埃が吸気口に入り難くなる。
また、上述の構成において、燃料タンクと、燃料タンクを上方から覆うカバーとが設けられ、空間は、燃料タンクとカバーとで挟まれた空間であっても良い。
この構成によれば、燃料タンクと燃料タンクのカバーとを利用して、簡単な構造で空間を設けることができる。
この構成によれば、吸気ダクトの上流端の吸気口よりもさらに上流側に延出するカバーのガイド部によって、吸気を吸気口に導くことができる。このため、吸気装置の吸気効率が良い。
また、上述の構成において、車体は、エンジンを支持する車体フレームであり、空間は、車体フレームを構成する板部材で囲まれた空間であっても良い。
この構成によれば、車体フレームを構成する板部材を利用して、簡単な構造で空間を設けることができる。
この構成によれば、車体フレームの上面の開口部から空間にアクセスでき、吸気装置のメンテナンス性が良い。
また、上述の構成において、開口部は、乗員用のシートによって上方から覆われても良い。
この構成によれば、車体フレームの上面の開口部がシートによって覆われるため、空間に外気を溜めることができ、吸気効率が良い。必要に応じてシートを開口部から離間させることで、開口部から空間にアクセスでき、吸気装置のメンテナンス性が良い。
この構成によれば、車体フレーム内の空間を利用してエアクリーナーケースを配置できる。また、開口部からエアクリーナーケースにアクセスでき、メンテナンス性が良い。さらに、エアクリーナーケースを前端部が後端部よりも下方に位置するように配置することで、エアクリーナーケースの容量を大きく確保できる。
さらに、上述の構成において、エアクリーナーケースの上面部には、バッテリーを収納するバッテリー収納部が設けられても良い。
この構成によれば、エアクリーナーケースの上面部を利用して、簡単な構造でバッテリーを収納できる。
この構成によれば、コネクティングチューブを前方に通す開口を利用して外気取り込み口を簡単な構造で設けることができる。また、スロットル装置は外気取り込み口の上縁部よりも下方に配置されるため、上下方向において外気は外気取り込み口の上縁部とスロットル装置との間をスムーズに流れることができる。このため、外気を外気取り込み口から空間に効率良く流すことができ、吸気効率が良い。
この構成によれば、空間が車体フレームの後端部によって閉じられるため、外気を空間に効率良く溜めることができる。このため、吸気装置の吸気効率が良い。
また、上述の構成において、エンジンは、クランクケースと、クランクケースの前面から前方に延出するシリンダー部とを備え、外気取り込み口は、車体フレームに設けられる開口であって、車両前方に向けて開口し、平面視で、クランクケースは、外気取り込み口に下方から重なっても良い。
この構成によれば、シリンダー部及びクランクケースに沿うように流れる外気を外気取り込み口から取り込むことができ、吸気効率が良い。
自動二輪車1は、車体フレーム10(車体)と、車体フレーム10に支持されるエンジン11と、前輪2を操舵自在に支持するフロントフォーク12と、後輪3を支持するスイングアーム13と、乗員用のシート14とを備える車両である。
自動二輪車1は、乗員がシート14に跨るようにして着座する鞍乗り型車両である。シート14は、車体フレーム10の後部の上方に設けられる。
図1及び図2を参照し、車体フレーム10は、車体フレーム10の前端に設けられるヘッドパイプ15と、ヘッドパイプ15から自動二輪車1の後部まで後方に延出するメインフレーム16と、メインフレーム16の後部から下方に延出するピボットフレーム17とを備える。
シートフレーム部19は、後方延出部18よりも上下の長さが大きく、後方延出部18に対し下方に膨出する。
ピボットフレーム17は、シートフレーム部19の下端から下方に延出する。シート14は、シートフレーム部19に支持される。シート14は、シートフレーム部19の上面を上方から覆う。
フロントフォーク12の上端部には、操舵用のハンドル21が取り付けられる。
後輪3は、スイングアーム13の後端部に設けられる車軸3aに支持される。
スイングアーム13の後部とシートフレーム部19の後部との間には、リアクション23が掛け渡される。
エンジン11は、車幅方向に延びるクランク軸30を収納するクランクケース31と、クランクケース31の前面から前方に延出するシリンダー部32とを備える内燃機関である。
エンジン11は、シリンダー部32の軸線32aが車両側面視で略水平に車両前後方向に延びる水平エンジンである。
クランク軸30に接続されるピストン(不図示)は、軸線32aに沿ってシリンダー部32内を前後に往復運動する。
エンジン11の排気管35は、シリンダー部32の下面に設けられる排気ポートから後方に延びる。排気管35の後端には、マフラー36が接続される。
燃料タンク41は、エアクリーナーケース38の下方に配置される。
自動二輪車1の各部に電力を供給するバッテリー42は、エアクリーナーケース38に支持される。
部品や物品を収納可能な収納ボックス45は、シートフレーム部19の外側面に取り付けられる。
ヘッドライト46は、ヘッドパイプ15の前方に配置される。フロントフェンダー47は、フロントフォーク12に取り付けられる。
後輪3を上方から覆うリアフェンダー48は、シートフレーム部19に取り付けられる。
図2~図4を参照し、メインフレーム16は、複数の板部材を結合して中空のケース状に形成されている。
詳細には、メインフレーム16は、メインフレーム16の左側の側面部を構成する左側板部材51(板部材)と、メインフレーム16の右側の側面部を構成する右側板部材52(板部材)とを備える。
左側板部材51と右側板部材52とは、略左右対称に設けられる。
また、メインフレーム16は、メインフレーム16の前部の下面部を構成する下側板部材53と、メインフレーム16の後面部を構成する後側板部材54(後壁)と、メインフレーム16の後面部の上部を構成する第2の後面板部材55とを備える。
後方延出部18の前端の開口は、ヘッドパイプ15の後面によって閉じられる。
後側板部材54は、車両側面視で、後上がりに傾斜している。
シートフレーム部19の内側には、左側板部材51、右側板部材52、後側板部材54、及び第2の後面板部材55によって囲まれる内部空間57が形成される。内部空間57は、開口部56から上方に露出する。
左側板部材51及び右側板部材52は、内部空間57を車幅方向に区画する側壁である。後側板部材54は、内部空間57を後方から覆う後壁である。
後端部19aは、左側板部材51の後端部、右側板部材52の後端部、後側板部材54の後端部、及び第2の後面板部材55によって構成される。シートフレーム部19の後端部19aは、第2の後面板部材55によって閉じられおり、後方に開口していない。
クランクケース31(図5)の上部は、エンジンハンガー部60に締結される。
前壁部53bは、車両前方側に面する壁部であり、左右のエンジンハンガー部60の前縁を車幅方向に互いに接続する。
前壁部53bには、前壁部53bを車両前後方向に貫通する外気取り込み口61が設けられる。外気取り込み口61は、前壁部53bを、前壁部53bの下縁から上方に切り欠くようにして設けられる開口である。外気取り込み口61は、車両前方に向けて開口する。
ピボットフレーム17は、左側の側壁部17aの上縁が、シートフレーム部19における左側板部材51の下縁の後部に結合され、右側の側壁部17aの上縁が、シートフレーム部19における右側板部材52の下縁の後部に結合される。
壁部17bは、車両側面視で、後上がりに傾斜している。シートフレーム部19の後面を構成する後側板部材54は、壁部17bの上端に連続して後上がりに上方に延びる。
平面視では、壁部17bは、開放部63の後部を下方から覆う。
クランクケース31(図5)の後部の上部及び下部は、左右の側壁部17aに締結される。
図1~図5を参照し、エアクリーナーケース38、燃料タンク41、及びバッテリー42は、シートフレーム部19内の内部空間57に収納される。
シート14は、シート14の前端部のヒンジ部を中心に上下に回動可能に設けられる。
燃料タンク41は、車両側面視において、エンジン11のクランクケース31の後上方で、後上がりの姿勢で配置される。このため、車両側面視で、燃料タンク41の前端部41aは、燃料タンク41の後端部41bよりも下方に位置する。また、燃料タンク41の燃料は、燃料が減少すると、エンジン11に近いとともに位置が低い前端部41a側に集まる。このため、自動二輪車1のマスの集中化を図ることができるとともに、自動二輪車の重心を低くできる。
詳細には、燃料タンク41は、下半体65の上縁に設けられる下側フランジ部と、上半体66の下縁に設けられる上側フランジ部とが合わさったフランジ部67を備える。下半体65と上半体66とはフランジ部67で溶接されて一体化される。
フランジ部67は、燃料タンク41の外周面から突出する板状部であり、燃料タンク41の外周面を一周するように設けられる。
車両側面視では、フランジ部67において燃料タンク41の左右の側面に位置する部分は、後上がりの姿勢で直線状に延びる。
上面部41cの後部には、給油口41dが設けられる。給油口41dは、上面部41cから上方に突出する筒状部である。給油口41dの上端の開口は、キャップ41eで塞がれる。
上面部41cの前部には、燃料ポンプ41fが取り付けられる。燃料ポンプ41fは、燃料タンク41内の燃料を、燃料ホース(不図示)を介してシリンダー部32に供給する。
図5~図8を参照し、エアクリーナーケース38は、車両側面視で前後に長い箱状である。
エアクリーナーケース38は、燃料タンク41に隣接して、燃料タンク41の前上方に配置される。
詳細には、エアクリーナーケース38は、車両側面視で、エアクリーナーケース38の下面部38cが燃料タンク41の上面部41cに沿うように、後上がりの姿勢で配置される。
ケース本体部70は、車両側面視で後上がりに配置される箱状である。ケース本体部70の上面の後部には、上方に開口するケース開口部70aが設けられる。
蓋部71は、蓋部71の下面の略全体が開口する箱状である。蓋部71は、ケース本体部70の上面の後部に取り付けられて、ケース開口部70aを覆う。
吸気ダクト73における吸気の流れの下流端は、蓋部71の後面部71aに接続される。
吸気ダクト73は、車両前後方向に延びる筒状である。吸気ダクト73の後端の開口は、吸気の入口となる吸気口73aである。吸気口73aは、吸気ダクト73における吸気の流れの上流端である。
ダーティーサイド38dは、フィルター72の上方で蓋部71内の空間である。吸気ダクト73は、ダーティーサイド38dに連通する。
クリーンサイド38eは、フィルター72の下方でケース本体部70内の空間である。
外気は、吸気口73aから吸気ダクト73に吸い込まれ、ダーティーサイド38dに流入する。ダーティーサイド38dの吸気(外気)は、フィルター72を通過して浄化された後、クリーンサイド38eに流れ、コネクティングチューブ40を通ってスロットル装置39に流れる。
図1及び図5を参照し、スロットル装置39には、保護カバー49が取り付けられる。保護カバー49は、スロットル装置39を、前方、左右の両側方、及び上方から覆うケース状に形成される。保護カバー49の左右の側面には、保護カバー49の内側に風を通す通気口49aが設けられる。
詳細には、エアクリーナーケース38の後部の上面部は、蓋部71の上面部であり、エアクリーナーケース38の前部の上面部は、ケース本体部70の上面部である。
バッテリー収納部74は、バッテリー42の前面に当接する前壁部74bと、バッテリー42を左右の側方からそれぞれ覆う左右一対の側壁部74cとを備える。
バッテリー42がバッテリー収納部74に収納された状態では、バッテリー42の上端と蓋部71の上面部とは略同一の高さ位置にある。
エアクリーナーケース38は、車両前後方向において、バッテリー42と燃料タンク41との間に位置する。また、エアクリーナーケース38は、上下方向において、バッテリー42と燃料タンク41との間に位置する。
燃料タンク41は、エアクリーナーケース38の後下方に位置し、車両側面視で、前部が車両前後方向及び上下方向でエアクリーナーケース38に重なる。
バッテリー42及び燃料タンク41は、車両側面視で、水平線L1、水平線L2、鉛直線L3、及び鉛直線L4によって囲まれる矩形の領域75内に位置している。
すなわち、バッテリー42及び燃料タンク41は、後上がりに配置されたエアクリーナーケース38の前上方及び後下方のスペースを利用してコンパクトに配置される。
また、図6には、バッテリー42の後端を通る鉛直線L5と、バッテリー42の下端を通る水平線L6とが図示される。車両側面視で、鉛直線L5は燃料タンク41の前部に重なり、水平線L6は燃料タンク41の上部に重なる。
すなわち、バッテリー42は、車両側面視で、少なくとも一部が車両前後方向及び上下方向で燃料タンク41に重なる。このため、バッテリー42、エアクリーナーケース38、及び燃料タンク41を、車両前後方向及び上下方向にコンパクトに配置できる。
バッテリー42及び燃料タンク41は、車両側面視で、車両前後方向及び上下方向でエアクリーナーケース38に重なるため、バッテリー42、エアクリーナーケース38、及び燃料タンク41をコンパクトに配置できる。
図8及び図9を参照し、自動二輪車1は、エアクリーナーケース38を上方から覆う前側カバー77と、前側カバー77の後方で燃料タンク41を上方から覆うタンクカバー78(カバー)とを備える。
前側カバー77及びタンクカバー78は、シートフレーム部19の上面の開口部56に配置され、開口部56を塞ぐ。
シート14は、前側カバー77、タンクカバー78、及び開口部56を上方から覆う。
図9のようにシート14を上方に回動させて開いた状態では、前側カバー77及びタンクカバー78は、上方に露出する。
図8~図11を参照し、シートフレーム部19の内部空間57には、車体フレーム10の左側板部材51と右側板部材52とによって車幅方向に囲まれるとともに、燃料タンク41の上面部41cとタンクカバー78とによって上下に囲まれる空間80が形成される。
また、空間80は、蓋部71の後面部71aと車体フレーム10の後端部の後壁部55aとによって前後に囲まれる。
空間80は、シートフレーム部19の上面の開口部56の下方に位置し、上面視で、開口部56に重なる。
前側カバー77は、タンクカバー78に対し取り外し可能であり、前側カバー77を設けない構成とすることもできる。この場合、車両前方からの空気(外気)を、エアクリーナーケース38の上面とタンクカバー78との間の隙間から空間80にスムーズに流し、空間80に空気を溜めることができる。
吸気ダクト73は、空間80に配置される。吸気ダクト73は、蓋部71の後面部71aから車幅方向外側且つ後方に延出する。吸気ダクト73の吸気口73aは、空間80内で後方に向けて開口する。
吸気口73aは、車幅方向では、左側板部材51と給油口41dとの間に位置する。
吸気口73aは、上下方向では、燃料タンク41の上面部41cとタンクカバー78との間に位置する。
吸気口73aは、前後方向では、蓋部71の後面部71aと後壁部55aとの間に位置する。吸気口73aは、燃料タンク41の上面部41cの後端41gよりも前方に位置する。
ガイド部78bは、図11のように吸気ダクト73の軸方向に見ると、吸気ダクト73の外周に沿うように上方に膨出する円弧状である。
図8及び図9に示すように、ガイド部78bは、吸気口73aよりもさらに上流側の後方に延びる。ガイド部78bは、タンクカバー78の前縁から、タンクカバー78の後部の左側縁まで連続する。
ケース本体部70に対し締結されている蓋部71は、締結を解除することでケース本体部70から取り外される。蓋部71が取り外されると、フィルター72が露出する。このため、フィルター72のメンテナンスが容易である。
スロットル装置39は、車両側面視で、メインフレーム16の後方延出部18とエンジン11のシリンダー部32とで上下に挟まれた空間に配置される。
外気取り込み口61から前方に延びるコネクティングチューブ40は、エンジン11の上面と後方延出部18の下面との間を前下がりに延びて、スロットル装置39に接続される。
図4及び図5を参照し、スロットル装置39は、車両上下方向で、外気取り込み口61の上縁部61aよりも下方に配置される。このため、外気Wは、車両上下方向でスロットル装置39と外気取り込み口61の上縁部61aとの間をスムーズに流れて内部空間57に流入する。
空間80は、左側板部材51、右側板部材52、燃料タンク41の上面部41c、タンクカバー78、蓋部71の後面部71a、及び車体フレーム10の後端部19aによって囲まれているため、外気Wが溜まり易い。このため、エアクリーナーケース38は、空間80に安定して溜まる外気Wを吸気ダクト73の吸気口73aから吸い込むことができ、吸気効率が良い。
内部空間57を流れる外気Wの一部は、燃料タンク41のフランジ部67にガイドされて後上方に流れ、空間80に流入する。このため、空間80に外気Wを溜め易い。
空間80に流入した外気Wの一部は、吸気口73aの後方のガイド部78bにガイドされて吸気口73aに流れる。このため、外気Wを効率良く吸気口73aに流すことができる。
また、内部空間57では、後側板部材54が車両側面視で後上がりに傾斜しているとともにタンクカバー78が略水平であるため、内部空間57の上下の幅は、後方に向かうに従って小さくなる。このため、内部空間57の後部に位置する空間80に外気Wが溜まり易い。
この構成によれば、外気取り込み口61から流入する外気Wは、車体フレーム10の内側の空間80に溜まり、この溜まった外気Wを吸気ダクト73が吸い込むため、吸気装置37は安定した吸気を行うことができる。さらに、外気取り込み口61が、シリンダー部32の軸線32aが略水平に車両前後方向に延びるエンジン11の上方に位置するため、エンジン11が外気取り込み口61に流れる外気Wの妨げになることを抑制できる。このため、吸気装置37の吸気効率を向上させてエンジン11の出力を増加させることができる。
この構成によれば、外気Wは、空間80の前方の外気取り込み口61から空間80に入り、後方に開口する吸気口73aから吸気ダクト73に吸い込まれる。
このため、外気取り込み口61から吸気口73aまでの吸気の経路が長くなり、塵埃が吸気口73aに入り難くなる。
また、燃料タンク41と、燃料タンク41を上方から覆うタンクカバー78とが設けられ、空間80は、燃料タンク41とタンクカバー78とで挟まれた空間である。
この構成によれば、燃料タンク41とタンクカバー78とを利用して、簡単な構造で空間80を設けることができる。
この構成によれば、吸気ダクト73の上流端の吸気口73aよりもさらに上流側に延出するタンクカバー78のガイド部78bによって、吸気を吸気口73aに導くことができる。このため、吸気装置37の吸気効率が良い。
また、車体は、エンジン11を支持する車体フレーム10であり、空間80は、車体フレーム10を構成する板部材である左側板部材51及び右側板部材52で囲まれた空間である。
この構成によれば、車体フレーム10を構成する左側板部材51及び右側板部材52を利用して、簡単な構造で空間80を設けることができる。
この構成によれば、車体フレーム10の上面の開口部56から空間80にアクセスでき、吸気装置37のメンテナンス性が良い。
また、開口部56は、乗員用のシート14によって上方から覆われる。
この構成によれば、車体フレーム10の上面の開口部56がシート14によって覆われるため、空間80に外気Wを溜めることができ、吸気効率が良い。必要に応じてシート14を開口部56から離間させることで、開口部56から空間80にアクセスでき、吸気装置37のメンテナンス性が良い。
この構成によれば、車体フレーム10内の内部空間57を利用してエアクリーナーケース38を配置できる。また、開口部56からエアクリーナーケース38にアクセスでき、メンテナンス性が良い。さらに、エアクリーナーケース38を前端部38aが後端部38bよりも下方に位置するように配置することで、エアクリーナーケース38の容量を大きく確保できる。
さらに、エアクリーナーケース38の上面部には、バッテリー42を収納するバッテリー収納部74が設けられる。
この構成によれば、エアクリーナーケース38の上面部を利用して、簡単な構造でバッテリー42を収納できる。
この構成によれば、コネクティングチューブ40を前方に通す開口を利用して外気取り込み口61を簡単な構造で設けることができる。また、スロットル装置39は外気取り込み口61の上縁部61aよりも下方に配置されるため、上下方向において外気Wは外気取り込み口61の上縁部61aとスロットル装置39との間をスムーズに流れることができる。このため、外気Wを外気取り込み口61から空間80に効率良く流すことができ、吸気効率が良い。
この構成によれば、空間80が車体フレーム10の後端部19aによって閉じられるため、外気Wを空間80に効率良く溜めることができる。このため、吸気装置37の吸気効率が良い。
また、エンジン11は、クランクケース31と、クランクケース31の前面から前方に延出するシリンダー部32とを備え、外気取り込み口61は、車体フレーム10に設けられる開口であって、車両前方に向けて開口し、平面視で、クランクケース31は、外気取り込み口61に下方から重なる。
この構成によれば、シリンダー部32及びクランクケース31に沿うように流れる外気Wを外気取り込み口61から取り込むことができ、吸気効率が良い。
この構成によれば、バッテリー42と燃料タンク41との間に挟まれるエアクリーナーケース38を緩衝材として利用でき、自動二輪車1が外部から衝撃を受けた際に、バッテリー42と燃料タンク41との接触を回避できる。また、バッテリー42及び燃料タンク41は、車両側面視で、車両前後方向及び上下方向でエアクリーナーケース38に重なるため、バッテリー42、エアクリーナーケース38、及び燃料タンク41をコンパクトに設けることができる。
この構成によれば、燃料搭載によって重量物となる燃料タンク41が、バッテリー42及びエアクリーナーケース38よりも下方に配置されるため、自動二輪車1の重心位置を低くできる。
また、燃料タンク41から燃料を供給されるエンジン11を備え、燃料タンク41は、エンジン11の後方且つ上方に配置され、燃料タンク41の前端部41aは、燃料タンク41の後端部41bよりも下方に位置する。
この構成によれば、燃料タンク41の重心をエンジン11の近くに位置させることができ、マスの集中化を図ることができる。
この構成によれば、エアクリーナーケース38の下面部38cが燃料タンク41の上面部41cに沿うため、エアクリーナーケース38によって燃料タンク41を効果的に保護できる。また、エアクリーナーケース38を前端部38aが後端部38bよりも下方に位置するように配置することで、エアクリーナーケース38の容量を大きく確保できる。
また、バッテリー42は、エアクリーナーケース38の上面部に固定される。
この構成によれば、エアクリーナーケース38の上面部を利用して、簡単な構造でバッテリー42を支持できる。
この構成によれば、車体フレーム10の内部空間57を利用して、バッテリー42、燃料タンク41、及びエアクリーナーケース38をコンパクトに配置できるとともに、車体フレーム10によって、バッテリー42、燃料タンク41、及びエアクリーナーケース38を保護できる。また、バッテリー42、燃料タンク41、及びエアクリーナーケース38を車体フレーム10によって隠すことができ、自動二輪車1の外観性が良い。
また、車体フレーム10は、内部空間57を車幅方向に区画する左右一対の側壁である左側板部材51及び右側板部材52と、内部空間57を後方から覆う後壁である後側板部材54とを少なくとも備え、後側板部材54は後輪3を上方から覆う壁部であって、車両側面視で後上がりに傾斜し、燃料タンク41は、車両側面視で、後側板部材54に沿って後上がりに傾斜して設けられ、エアクリーナーケース38は、車両側面視で、燃料タンク41の上面部41cに沿って後上がりに傾斜して設けられ、バッテリー42は、エアクリーナーケース38の前部の上方に配置される。
この構成によれば、後輪3を上方から覆う後上がりの後側板部材54に沿って燃料タンク41を後上がりに傾斜して設けることで、燃料タンク41を車体フレーム10の内部にコンパクトに配置できる。エアクリーナーケース38を、燃料タンク41の上面部41cに沿って後上がりに傾斜して設けることで、エアクリーナーケース38をコンパクトに配置できる。後上がりに傾斜するエアクリーナーケース38の前部の上方の空間を利用して、バッテリー42をコンパクトに配置できる。
さらに、バッテリー42は、車両側面視で、少なくとも一部が車両前後方向及び上下方向で燃料タンク41に重なる。
この構成によれば、バッテリー42、エアクリーナーケース38、及び燃料タンク41を、車両前後方向及び上下方向にコンパクトに配置できる。
上記実施の形態では、吸気口73aが配置される空間80は、車体フレーム10の内側の空間であるが、本発明はこれに限定されない。空間80は、例えば、車体としての車体カバーの内側の空間であっても良い。
また、上記実施の形態では、外気取り込み口61は、車体フレーム10に設けられる開口であるが、これに限らず、外気取り込み口61は、例えば、車体カバーに設けられる開口であっても良い。
上記実施の形態では、自動二輪車1を例に挙げて説明したが、本発明はこれに限定されるものではなく、本発明は、前輪または後輪を2つ備える3輪の鞍乗り型車両及び4輪以上を備える鞍乗り型車両に適用可能である。
10 車体フレーム(車体)
11 エンジン
14 シート
19a 後端部(車体フレームの後端部)
31 クランクケース
32 シリンダー部
32a 軸線
37 吸気装置
38 エアクリーナーケース
38a 前端部
38b 後端部
39 スロットル装置
40 コネクティングチューブ
41 燃料タンク
42 バッテリー
51 左側板部材(板部材)
52 右側板部材(板部材)
56 開口部
61 外気取り込み口
61a 上縁部
73 吸気ダクト
73a 吸気口
74 バッテリー収納部
78 タンクカバー(カバー)
78b ガイド部
80 空間
Claims (12)
- エアクリーナーケース(38)、前記エアクリーナーケース(38)に下流端が接続される吸気ダクト(73)、吸気量を調整するスロットル装置(39)、及び、前記エアクリーナーケース(38)と前記スロットル装置(39)とを接続するコネクティングチューブ(40)を備える吸気装置(37)と、前記吸気装置(37)が接続されるエンジン(11)とを備え、前記エンジン(11)のシリンダー部(32)の軸線(32a)が略水平に車両前後方向に延びる鞍乗り型車両において、
前記吸気ダクト(73)の上流端の吸気口(73a)は、車体(10)の内側の空間(80)内で開口し、
前記車体(10)は、車両側面視で、前記エンジン(11)の上方且つ前記空間(80)の前方に、前記空間(80)に外気を取り込む外気取り込み口(61)を備えることを特徴とする鞍乗り型車両。 - 前記吸気ダクト(73)は、前記エアクリーナーケース(38)から後方に延出し、前記吸気口(73a)は後方に開口することを特徴とする請求項1記載の鞍乗り型車両。
- 燃料タンク(41)と、前記燃料タンク(41)を上方から覆うカバー(78)とが設けられ、
前記空間(80)は、前記燃料タンク(41)と前記カバー(78)とで挟まれた空間であることを特徴とする請求項1または2記載の鞍乗り型車両。 - 前記カバー(78)は、前記吸気ダクト(73)を上方から覆い、
前記カバー(78)は、前記吸気ダクト(73)を避けるように上方に膨出するガイド部(78b)を備え、
前記ガイド部(78b)は、前記吸気ダクト(73)の軸方向に延びて前記吸気ダクト(73)を上方から覆い、
前記ガイド部(78b)は、前記吸気ダクト(73)の前記上流端よりもさらに上流側に延出することを特徴とする請求項3記載の鞍乗り型車両。 - 前記車体(10)は、前記エンジン(11)を支持する車体フレーム(10)であり、前記空間(80)は、前記車体フレーム(10)を構成する板部材(51,52)で囲まれた空間であることを特徴とする請求項1から4のいずれかに記載の鞍乗り型車両。
- 前記車体フレーム(10)の上面には、上方に開放する開口部(56)が設けられ、
前記空間(80)は、前記開口部(56)の下方に位置し、上面視で前記開口部(56)に重なることを特徴とする請求項5記載の鞍乗り型車両。 - 前記開口部(56)は、乗員用のシート(14)によって上方から覆われることを特徴とする請求項6記載の鞍乗り型車両。
- 前記エアクリーナーケース(38)は、前記車体フレーム(10)の内部に配置されるとともに、上面視で、少なくとも一部が前記開口部(56)に重なり、
車両側面視で、前記エアクリーナーケース(38)は、前記エアクリーナーケース(38)の前端部(38a)が後端部(38b)よりも下方に位置するように傾斜して配置されることを特徴とする請求項6または7記載の鞍乗り型車両。 - 前記エアクリーナーケース(38)の上面部には、バッテリー(42)を収納するバッテリー収納部(74)が設けられることを特徴とする請求項8記載の鞍乗り型車両。
- 前記車体(10)は車体フレーム(10)であり、前記エンジン(11)は前記車体フレーム(10)の下方に配置され、
前記スロットル装置(39)は、前記車体フレーム(10)と前記エンジン(11)とで上下に挟まれた空間に配置され、
前記コネクティングチューブ(40)は、前記エアクリーナーケース(38)から前記外気取り込み口(61)を通って前方に延びて前記スロットル装置(39)に接続され、
前記スロットル装置(39)は、車両上下方向で、前記外気取り込み口(61)の上縁部(61a)よりも下方に配置されることを特徴とする請求項1から9のいずれかに記載の鞍乗り型車両。 - 前記空間(80)は、前記車体フレーム(10)の後端部(19a)によって後方から囲まれ、
前記吸気ダクト(73)の前記吸気口(73a)は、前記車体フレーム(10)の後部に設けられる前記空間(80)で後方に向けて開口することを特徴とする請求項5から10のいずれかに記載の鞍乗り型車両。 - 前記エンジン(11)は、クランクケース(31)と、前記クランクケース(31)の前面から前方に延出する前記シリンダー部(32)とを備え、
前記外気取り込み口(61)は、前記車体フレーム(10)に設けられる開口であって、車両前方に向けて開口し、
平面視で、前記クランクケース(31)は、前記外気取り込み口(61)に下方から重なることを特徴とする請求項5から10のいずれかに記載の鞍乗り型車両。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5125884Y1 (ja) * | 1974-06-18 | 1976-07-01 | ||
JPS5286151U (ja) * | 1975-12-24 | 1977-06-27 | ||
JPS5428849U (ja) * | 1977-07-29 | 1979-02-24 | ||
JP2012056497A (ja) * | 2010-09-10 | 2012-03-22 | Honda Motor Co Ltd | 自動二輪車のエアクリーナ構造 |
JP2014008834A (ja) * | 2012-06-28 | 2014-01-20 | Honda Motor Co Ltd | 鞍乗型車両 |
JP2015223901A (ja) * | 2014-05-27 | 2015-12-14 | ヤマハ発動機株式会社 | 鞍乗型車両 |
JP2018165128A (ja) * | 2017-03-28 | 2018-10-25 | 本田技研工業株式会社 | 鞍乗り型車両のエアクリーナ支持構造 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS5125884Y1 (ja) * | 1974-06-18 | 1976-07-01 | ||
JPS5286151U (ja) * | 1975-12-24 | 1977-06-27 | ||
JPS5428849U (ja) * | 1977-07-29 | 1979-02-24 | ||
JP2012056497A (ja) * | 2010-09-10 | 2012-03-22 | Honda Motor Co Ltd | 自動二輪車のエアクリーナ構造 |
JP2014008834A (ja) * | 2012-06-28 | 2014-01-20 | Honda Motor Co Ltd | 鞍乗型車両 |
JP2015223901A (ja) * | 2014-05-27 | 2015-12-14 | ヤマハ発動機株式会社 | 鞍乗型車両 |
JP2018165128A (ja) * | 2017-03-28 | 2018-10-25 | 本田技研工業株式会社 | 鞍乗り型車両のエアクリーナ支持構造 |
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