WO2004078572A1

WO2004078572A1 - Motorcycle

Info

Publication number: WO2004078572A1
Application number: PCT/JP2004/002844
Authority: WO
Inventors: Yoshiharu Matsumoto; Hiroshi Arakawa
Original assignee: Yamaha Hatsudoki Kabushiki Kaisha
Priority date: 2003-03-06
Filing date: 2004-03-05
Publication date: 2004-09-16
Also published as: CN1756691A; CN100395147C; JPWO2004078572A1; JP4143089B2

Abstract

A motorcycle has a frame extending in front of rider’s legs, in the vertical direction of the motorcycle; a handlebar swingably supported at the upper end of the frame; a front fork swinging together with the handlebar; a front wheel swingably supported by the front fork; and a cover for covering the frame. The cover includes a rear cover for covering the rear of the frame and a front cover for covering the front of the frame. The front cover is at substantially the same height, in the vertical direction, as the upper end of the front wheel and has a proximal portion that is proximate to or in contact with the rear cover. The motorcycle has an inlet for introducing air to the inside of the cover. The inlet is defined by the front cover and located below, in the vertical direction, the proximal portion. Air is introduced from the inlet and led rearward, in the longitudinal direction of the motorcycle, through the space between the front cover and the rear cover.

Description

Statement Motorcycle

Technical field

The present invention relates to, for example, a motorcycle including a screen. Background art

The continuous skirt includes a frame from head pipe to seat that supports the front wheels in an operable manner. This frame is deeply curved downward. At the lower front of the frame, install flat plate-like redder shields and step boards that overhang on both sides. The engine mounted under the seat and the upper part of the rear wheel were covered with body strength par. On this screen, a wind guide hole is defined along the vertical center line of the step board. The front end of the air guide hole opens in the lower front of the redder shield. The lower shape of the recess is inclined rearward and inward so as to be guided toward the front of the air guide hole. On the other hand, the opening of the air guide hole has an upward louver. The rear end of the air guide hole opens at the front in the body cover. When traveling, air is introduced from the lower front of the leg series and is directed through the air guide holes around the engine cylinder and its exhaust system (see Japanese Utility Model Publication No. 6 3 4 7 13).

Another screen cooler includes a redder shield that covers the back of the frame's downtube. The cooling system includes a step floor extending rearward from the lower end of the redder shield to support the rider's legs. The cooling system includes an underbar that covers the underside of this step floor. Includes an engine located at the rear of the step floor. And between the step floor and the under cover, an air guide passage for guiding the cooling air to the engine is defined. The front end of the undercover is bent forward and forward than the lower end of the down tube. Thus, the inlet for guiding the cooling air to the air guide passage is the upper end of the underforce par and the recess. It is formed upward between the front surface of the shield and the front (see Japanese Patent Application Laid-Open No. 10-16554). In addition, another scooter includes an engine cooling radiator housed within the redder shield. The skart includes an air intake that directs cooling air to the radiator from the front of the ratchet. The screen includes an exhaust port provided on the left and right sides of the footrest and opening rearward. The scooter includes a cooling air passage which communicates with the exhaust port from the lower part in the redder shield and guides the cooling air passing through the radiator to the exhaust port (refer to Japanese Patent Application Laid-Open No. 5-586 7). . Disclosure of the invention

The object of the invention is to provide a motorcycle in which the vehicle is made longitudinally compact. Another object of the present invention is to provide a motorcycle in which air flowing over the front wheel is guided to the inlet and air is easily introduced into the cover.

The first aspect of the invention provides the following motorcycle. The motorcycle includes a longitudinally extending frame of the motorcycle in front of the passenger's legs. The motor cycle includes a handle rotatably supported at the upper end of the frame. The motorcycle includes a front fork that pivots with the handle. The motorcycle includes a front wheel rotatably supported on the front fork. The motorcycle includes a capa portion covering the frame. The force par portion includes a rear cover portion covering the rear of the frame. The force par portion includes a front force par portion covering a front side of the frame. The front cover portion has a proximity portion approaching or in contact with a portion of the rear force pas- sage at substantially the same height as the upper end of the front wheel in the vertical direction. The motorcycle includes an inlet for introducing air to the inside of the force par. The inlet is defined by the front cover portion at a position lower in the longitudinal direction than the proximity portion. Air is introduced from the inlet and guided longitudinally rearward of the motorcycle through the space between the front cover portion and the rear cover portion.

The inlet may extend rearward and downward from the front surface of the front force bar portion. The inlet includes a plurality of openings extending rearward from the front surface of the front cover portion and aligned in the longitudinal direction. The plurality of openings have a lower opening and an upper opening. Said lower side The front end of the opening may be positioned forward of the front end of the upper opening.

The inlet may be positioned laterally away from the center of the front cover portion in the lateral direction of the motorcycle.

The motoring cycle includes a front fender that covers the front of the front wheel and is supported by the front fork. The rear end of the tongue may be positioned near the proximity site.

The upper surface of the front fender may define a groove extending in the longitudinal direction of the motor cycle.

The front cover portion may include a convex portion that protrudes forward at a position vertically offset from the rear end of the front fender in the vicinity of the proximity portion.

The front cover portion includes a front upper force par that covers the front side of the frame above the front wheel. The front cover part includes a front lower power part that covers the front side of the frame below the upper end of the front wheel. The upper end of the front lower force par may approach or contact the rear cover.

At least a portion of the front force par may extend rearward in the longitudinal direction from the front end of the frame to approach or contact the rear cover portion.

The motorcycle includes a lower cover portion that extends rearward and is continuous with the lower end of the front cover portion. The motorcycle includes an upper cover portion connected to the rear cover portion and extending rearward. Air is introduced from the inlet and directed to the rear of the motorcycle through the space between the front force par and the rear cover and the space between the lower cover portion and the upper cover portion. Led. The lower cover portion may define a drainage hole. The second aspect of the invention provides the following motorcycle. The motor cycle includes the prime mover. The motorcycle includes wheels that can be driven by the prime mover. The motorcycle includes a steering for establishing a steering angle of the wheel. The motor cycle includes a cowling that covers the steering and defines a duct for introducing air to the motor. The cowling is located below the upper end of the wheel in the longitudinal direction of the motorcycle. And define an inlet for introducing air into the duct.

The cowling may include a groove that separates the inlet.

The louver may extend from the inlet into the duct.

A motorcycle, comprising a fender covering the wheel. The fender may have a guide for guiding air to the inlet. -The guide may have a groove; Brief description of the drawings

FIG. 1 is a side view of a screen according to an embodiment of the invention. The code A 0 indicates the air going to the front fender.

FIG. 2 is an enlarged perspective view of the rear portion of the vehicle body related to the screen of FIG. 1 as viewed from the right. FIG. 3 is a bottom view of the undercover of FIG. The code A 1 is air supplied to the intake port of the engine. The code A 2 is air directed to an oil sump. The code A3 is air heading for the fan. The code | symbol A4 is air which goes to an exhaust pipe.

Figure 4 is an enlarged cross-sectional view of the screen along IV-IV in Figure 2;

Figures 5A and 5B show the skewer cover of Figure 1. Figure 5A is an enlarged front view of the cover. P 1 represents a horizontal surface in contact with the upper end of the front wheel W f. FIG. 5B is a cross-sectional view taken along line V B-V B of FIG. 5A.

6 is an enlarged side view of the inner cover of FIG. 5A.

FIG. 7 is an enlarged cross-sectional view of the screen taken along the line VII-VII in FIG. Line L1 is a position corresponding to the front end of the frame.

FIG. 8 is an enlarged cross-sectional view of the screen along VI II-V II I in FIG.

FIG. 9 is an enlarged side view of the opening of the inner force par of FIG. 5A and FIG. In the figure, F indicates the front area of the inner cover, and R indicates the rear area of the inner cover.

FIG. 10 is a diagram showing the relationship between the rear end of the front fender of FIG. 1 and the front end of the inner cover. P 1 represents a horizontal surface in contact with the upper end of the front wheel W f. In the figure, L. D indicates the longitudinal direction of the screen or each part, F indicates the front, and R indicates the rear. T. D indicates the lateral direction of the scooter or each part, and L and R indicate left and right in the traveling direction of the vehicle. V. D indicates the longitudinal direction of the screen or each part, U indicates the top, and L indicates the bottom. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, the scooter 1 includes a vehicle body 3 which constitutes a skeleton. A front portion 3F, a central portion 3C and a rear portion 3R of the vehicle body 3 are integrated by a pair of left and right frames 5 curved in a U-shape. The front 3 F of the vehicle body 3 includes a head pipe 7 extended downward. At the upper part of the head pipe 7, a pair of left and right steering handle 8 rotatably supported is disposed. The steering handle 8 is connected to a rotatable steering shaft 9. The steering shaft 9 extends downward through the head pipe 7. The lower end of the steering shaft 9 pivotally supports the front wheel W f via an under bracket 10 and a front cushion 11. The upper part of the front wheel W f. The steering shaft 9 and the front cushion 1 1 constitute a front fork 12.

The central portion 3C of the vehicle body 3 includes, at the central portion thereof, a floor rest 15 as a footrest or an upper force par for a passenger to place his / her legs. The floor force par 15 is supported by the center of the frame 5. The head pipe 7 is disposed on the front 3 F of the vehicle body 3 from the floor cover 15. The floor cover 15 is integrated with the rear lid shield 17 B which rises up to the head pipe 7. The front ends of the rear side reg- ister 17 B and the floor cover 15 constitute a rear cover partial 20 B. The rear leg shield 1 7 B covers the front and rear surfaces of the head pipe 7. The rear redder shield 1 7 B is supported by the front of the frame 5 and covers the front of the passenger's leg.

The front side of the rear redder shield 17 B is integrated with the inner strength plate 19. The upper part of the inner cover 19 is attached to the front redder shield 1 7 F as a part of the front upper cover. Be The front ratchet shield 1 7 F and the inner cover 1 1 9 constitute a front cover portion 2 0 F. The rear of the inner cover 19 is connected to the under cover 21 as a part of the lower cover. The inner cover 19 and the floor cover 15 constitute a floor portion 22.

Lyakaba 1 2 3 covers the rear 3 R of the car 3 and is supported by the rear of the main frame 5. The rear end of the rear of the frame 5 has a rotatable rear wheel W r below it. The rear of the frame 5 has a prime mover 29 at the bottom. The prime mover 29 includes an engine 25 for driving the rear wheel W r and a power transmission 27. The engine 25 may be substituted by an electric motor. The prime mover 29 may be fixed to the vehicle body 3 or may be swingably supported. A part of the prime mover 29 may be extended to the inside of the floor 22.

Referring also to FIG. 2, the engine 25 has a shroud 31 as a forced air cooling device on the right side of the engine 25. The shroud 31 has an outer wall (rib) 33 as an air introduction wall at its outer periphery. The rear of the main frame 5 and the upper portion of the rear of the power transmission device 2 7 are connected by a rear cushion 35. Lyakaba 1 2 3 has a seat 3 7 where the passenger sits at the top. The engine 25 is connected to one end of an exhaust pipe 39. The other end of the exhaust pipe 39 is connected to a muffler 41 provided at the rear of the lower 3 R of the vehicle body 3. The floor section 22 defines therein an air guiding channel 43 as a duct. The wind guide path 43 extends in the longitudinal direction of the vehicle body 3 to near the motor 29. The air guide path 43 guides the air from the outside to the motor 29.

Referring to FIGS. 3 and 4, undercapsule 21 includes side walls 21 A, 2 IB opposite to each other. An undercover 21 extends from side wall 21 A and includes a bottom wall or lower surface opposite floor cover 15. The bottom wall includes a first guide wall 21 C as a generally horizontal first lower planar portion extending from the side wall 21 A. The bottom wall is integrated with the first guide wall 21 C and includes a step 21 D extending in the longitudinal direction of the vehicle body 3. The bottom wall has a second guide wall as a substantially horizontal second lower planar portion having one end connected to the step 21 D and the other end connected to the side wall 21 B 2 Includes 1 E. The second guide wall 21 E is positioned below the first guide wall 21 C. The step 21 D becomes larger as it extends rearward, as shown in FIG. An inclined member 21 F is integrally formed on the lower cover 21 by extending the rear end of the second guide wall 21 E to incline downward or outward. The floor cover 15 is provided on the upper surfaces of the side walls 21 A and 21 B. Each of the 2 1 A to 2 1 E and the floor force par 15 constitute an air guide path 43. And, the first and second guide walls 21 C, 2 IE constitute the lower side of the air guide path 43. The first and second guide walls 2 9 C, 2 9 E are separated by a step difference 2 1 D. The first guide wall 21 C is positioned upward on the lower surface of the floor portion 22 while the second guide wall 21 E is positioned downward on the lower surface of the floor portion 22. That is, the first guide wall 21 C is positioned above the second guide wall in the longitudinal direction of the vehicle body. The lower second guide wall 21 E extends rearward than the upper first guide wall 21 C. The second guide wall 21 E projects outward beyond the first guide wall 21 C in the longitudinal direction of the vehicle body. In FIG. 3, the under cover 21 has a drain hole 44 at the center of the front side.

The first guide wall 21 C and the floor cover 15 define an air guide path 43 A as a space between them. In FIG. 3, this air guide path 43 A guides, for example, clean weak cooling air A 1 backward in FIG. In FIG. 4, the air A1 is supplied to the intake port 25A of the engine 25 disposed at one end side in the lateral direction of the vehicle body 3, that is, from the substantially left side to the center. Thereby, the engine 25 is cooled. The intake port 25 A of the engine 25 is disposed at the rear of the floor portion 22 and above the upper surface of the floor portion 22. Intake port 25 A opens in front of air cleaner 26.

The second guide wall 21 E and the floor cover 15 define an air guide path 43 B as a space between them. For example, a slightly dirty strong cooling air A 2 is introduced rearward in the wind guide path 4 3 B. The air A 2 cools a part of the oil reservoir 54 provided at the lower part of the engine 25. The air A2 is supplied to, for example, an air inlet 27A connected to, for example, a belt chamber of a power transmission device 27 disposed on the other side of the vehicle body 3 in the lateral direction, that is, the right side, and cools the belt chamber. Air intake 2 7 A is disposed at the rear of the floor portion 22 and above the upper surface of the floor portion 22. For example, dirty and strong cooling air flows horizontally in the air guide path 4 3 B. As a result, the mud and water carried along with the cooling air are discharged downward and obliquely backward through the inclined member 21 F provided at the lower part of the second guide wall 21 E.

In FIG. 4, the vehicle body 3 includes a shoe 31 as a forced air cooling device using a fan on the left side of the engine 25. This shroud 31 has an air inlet 45 (see FIG. 2). In order to introduce cooling air into the air intake 45, the undercover 1 21 has an air inlet 4

Have seven. The side wall 2 1 A of the undercover 1 21 has a concave surface 4 9 recessed inward on its side. The concave surface 4 9 extends in the longitudinal direction and guides the air to the air introduction hole 4 7. The concave surface 4 9 is formed adjacent to the side wall 2 1 A located at the upper side of the first guide wall 2 1 C of the anda cover 1 2 1. A protrusion 50 is provided between the surface located above the concave surface 4 9 and the side wall 21 A, which forms a step.

The air introduction wall 3 3 (see FIG. 2) which is erected in the lateral direction on the vehicle body 3 is positioned on the outer periphery of the air introduction hole 47 and on the side separated from the air introduction hole 47. Ru. Air inlet wall 3-3, makes it easy to inhale air into the air inlet 4 5. Air intake 4 5 is the car body

It is provided in the lateral direction of 3 and is opened to the left or right.

In FIG. 4, the first guide wall of the undercover 2 1, the outer wall of the 1 C, ie

The convex portion 51 is positioned on the A side. The convex portion 51 is apart from the step 21 D and extends in the lateral direction of the vehicle body 3. An air guide groove 53 extending in the longitudinal direction of the vehicle body 3 is defined by the convex portion 51 and the step 21 D. The air guide groove 53 guides the cooling air to the engine

The exhaust pipe 39 extending to the lower side of the engine 25 in the vicinity of 25 is cooled.

The exhaust pipe 39 is disposed to pass through the rear of the first guide wall 21 C. Engine 2

At least a portion of the oil reservoir 54 provided below the 5 is disposed behind the second guide wall 21 E located below the bottom wall of the floor portion 22.

In FIG. 1, the front cover 2 OF includes a rear leg shield 17 B as a portion of a cover that covers the rear of the frame 5. The front cover part 20 has a force to cover the front side of the frame 5 Includes front side recess 17 F as bar. The front redder shield 17 F defines an inlet 55 as an inlet. The front and rear dog shields 1 7 F, 1 7 B guide air to the floor portion 22 by a space as a duct therebetween. As a result, air can be easily introduced from the front into the floor portion 22 from the inlet 55.

The rear redder shield 1 7 B and the inner cover 1 9 form a space as a duct surrounded by them. This space forms the front side of the air guide path 43. The upper front end 1 9 A of the inner cover 19 shown in FIGS. 5 and 6 extends to the middle part of the redder shield 17 B shown in FIG.

As shown in FIG. 7, the inner cover 19 includes the upper end of the front wheel Wf and a portion 19B of substantially height in the longitudinal direction. The portion 19 B extends from the front end L 1 of the frame 5 to the side of the rear radar shield 17 B and is in close proximity or in contact. The upper front end 1 9 A of the first strength bar 19 defines, at its lower side, an inlet 55 of the air guide path 43 as shown in FIGS. 5 and 8. The inlet 55 is positioned laterally spaced apart from the central portion 19 C of the inner cover 19 in the lateral direction, as best shown in FIGS. 5A and 9. The inlet 55 extends in the lateral direction of the inner cover 1 19. The inlet 55 extends forward and upward from the front surface of the inner cover 19 inward. The inlet 55 extends diagonally downward from the front surface of the first cover 19 to the rear.

The inlet 55 has a plurality of openings 57 separated by an opening forming member 59 at the top and bottom. As shown in FIG. 9, the front end of the lower opening 5 7 A is positioned forward of the front end of the upper opening 5 7 B. The inlet 55 may have a structure in which the longitudinally extending openings 57 are arranged in the lateral direction. The opening forming member 59 extends rearward and diagonally downward from the front surface of the inner spring 19. . The opening forming member 59 functions as a louver.

As shown in FIG. 10, the rear end 13 A of the front fender 13 is positioned close to or in contact with the front end 19 C of the inner force par 19. In Figures 1 and 10, the front focus 13 defines at its upper surface a longitudinally extending recess 13B.

In FIG. 10, in order to shorten the distance L 2 between the front wheel W f and the inner cover 1 9, The rear end 13 A of the front fender 13 is shorter than the conventional two-dot chain line. Make the distance between the upper side Wa of the front wheel W f and the lower end 13 C of the front fender 13 short so as to leave almost no gap. The upper part of the inner cover 19 includes convex portions 61 A and 6 IB. The convex portions 61 A, 6 IB correspond to the concave portions 13 D formed in the rear end portion 13 A of the front fender 13. A labyrinth is formed by the rear end portion 1 3 A of the front fender 13 and the convex portions 6 1 A and 6 1 B of the inner cover 19. This labyrinth prevents the mud and water jumped up by W f from splashing in the direction of the head pipe 7.

As shown in FIGS. 5A and 5B, in the vicinity of a portion 19 B near or in contact with the inner cover 19 as the front cover portion 20, it is longitudinally displaced from the rear end of the front fender 13. At the same position, a convex portion 61 C projecting forward is formed.

Next, the action of the ducts of School 1 will be described.

Start the engine 25 and move the truck 1 forward. Front-side ratchet shield 1 7 F and 1 st bar 1 9 receive air A 0 from the front. The air A O is guided to the inlet 55 of the inner cover 19 by the recessed groove 13 B of the front fence 13. Air A O is introduced from the inlet 55 into the space as a duct between the rear redder shield 17 B and the inner joint 19. The opening forming member 59 draws air downward. The air is guided to the air guide path 43 by a duct. '

Air is introduced from the front to the front of the air guide path 43. The air is guided rearward through the wind guide path 43 between the floor cover 15 and the under cover 21. At this time, the air is separated into two airs A 1 and A 2 by the step 21 D as it flows backward. The air A 1 flows along the air guide path 4 3 A between the first guide wall 2 1 C and the floor force par 15. The air A 1 flows upward from the outlet of the air guide light path 43 and is supplied to the air inlet 25 A of the engine 25. This efficiently cools the engine 25 and the like.

On the other hand, the air A 2 flows along the air guide path 4 3 B between the second guide wall 21 E and the floor cover 15. The air A 2 flows upward from the outlet of the air guide path 4 3 B. The air A 2 is supplied to the air inlet 2 7 A to cool the belt chamber efficiently. In addition, with the air The mud and water which has flowed into the lower part of the second guide wall 21 E and the floor cover 15 in FIG. This prevents mud and water from being applied to the vicinity of the belt chamber constituting the power transmission device 2 7.

The air A 3 is guided rearward by the concave surface 4 9 on the outside of the undercover 2 1 1 and flows into the air introduction hole 4 7. In FIG. 2, this air A 3 flows in through the inlet 45 and cools the engine 25.

The air A 4 is guided rearward by the guide groove 53 on the outside of the under cover 21 to cool the exhaust pipe 39.

According to the above embodiment, scooter 1 includes frame 5. The frame 5 includes a first frame portion extending longitudinally in front of the passenger's legs and a second frame portion extending rearward from a lower portion of the first frame portion. The screen 1 includes a front cover portion 20 covering the first frame portion of claim 5. The screen 1 includes a floor portion 20 covering the second frame portion of the frame 5. The floor portion 20 extends rearward from the lower portion of the front cover portion 20 and has a mounting surface on the upper surface on which the passenger's foot can be mounted. The screen 1 includes a prime mover 29 disposed behind the floor portion 22 and driving the vehicle. The screen 1 includes an inlet 55 at the front of the vehicle. Air is introduced through inlet 55 and directed rearward through the interior of floor 22. The floor portion 22 has on its bottom wall a step 21 D extending in the longitudinal direction of the vehicle. Guide walls 21 C and 21 E of different heights are arranged side by side according to the step 21 D. Therefore, by devising the shape of the lower surface of the lower part 22, mixing of the guided air is suppressed while dividing the air guiding path 43, and the air is properly guided to the necessary part while securing the air volume.

The inclined member 21 F extends downward from the rear end of the second guide wall 21 E located at the bottom of the floor portion 22. The inclined member 21 F further suppresses the mixing of the air passing through the floor portion 22 and the air below the floor portion 22.

Of the bottom wall of the floor portion 22, the lower second guide wall 21 E extends to the rear from the upper first guide wall 21 C. Thus, the mixing of the air passing through the floor portion 22 and the air under the floor portion 2 2 is further suppressed. The step 2 ID is formed to increase as it extends backward. Therefore, the air in the floor portion 22 is directed upward by the step difference 21 D, and the air in the lower portion of the floor portion 22 is aligned with the surface of the first guide wall 21 C located on the upper side. The floor portion 22 is formed to extend in the longitudinal direction to the rear, and a concave surface 49 recessed inward is formed on the side surface of the floor portion 22. The concave surface 49 facilitates the formation of another air guiding path and suppresses the mixing of air with other air guiding paths.

The concave surface 49 is formed adjacent to the surface of the side wall 21 A located on the lower surface of the floor portion 22. A step was provided by a convex portion 50 provided between the surface located above and the concave portion 49. This further suppresses mixing of air with other air guide paths.

The prime mover 29 includes an engine 25 and an exhaust pipe 39 extending rearward from the engine 25. An exhaust pipe 39 was passed behind the first guide wall 21 C located on the bottom wall of the floor portion 22 at the top. In order to cool the exhaust pipe 39 which is less affected by water and mud, the air below the floor section 22 is introduced. Accordingly, to sufficiently cool the exhaust pipe 3 9 while directing more air that has passed through the inside of the floor portion 2 2 in other parts _β

The prime mover 29 includes an engine 25 having an oil reservoir 54 formed at the bottom. At least a part of the oil reservoir 54 of the engine 25 is disposed behind the second guide wall 21 E located below the lower surface of the floor portion 22. This arrangement directs the air to the oil reservoir 54 which is prone to high temperatures. The prime mover 29 includes an engine 25, and the intake 25 5 A of the engine 25 is disposed behind the floor portion 22 and above the upper surface of the floor portion 22. By this arrangement, the relatively clean air guided upward through the interior of the blower 22 is supplied to the engine 25. In addition, the prime mover 2 9 includes a power transmission 2 7, and an air inlet 2 7 A for taking in air to cool the inside of the power transmission 2 7 with air is a floor portion behind the floor portion 2 2. It was placed above the upper surface of 2 2. By this arrangement, relatively clean air led upward through the inside of the floor portion 22 is supplied to the inside of the power transmission device 27.

The prime mover 29 includes a fan for air cooling the prime mover 29. Fan air The intake 45 was placed behind the concave surface 4 9 of the floor section 2 2. By this arrangement, the prime mover 2 9 secures air for cooling.

The fan air inlet 45 opens laterally to the left or right. A laterally projecting air inlet wall 33 is provided at least on the rear and lower sides of the air inlet 45. Air introduction wall 3 3 guides the air flowing along the concave 4 9 to the fan.

The screen 1 includes a frame 5 extending longitudinally in front of the passenger's legs. The screen 1 includes a front cover part 20 F and a rear cover part 20 B as a cover part covering the frame 5. The screen 1 includes a front cover 20 F and an inlet 55 for introducing air to the inside of the rear cover 20 B. The screen 1 includes a steering handle 8 rotatably supported at the upper end of the frame 5. The scooter 1 includes a front fork 12 that pivots with its steering handle 8. The truck 1 includes a front wheel W f rotatably supported on its front fork 12. Air is introduced from the inlet 55, and is guided to the rear of the vehicle through the space between the front force par portion 20F and the rear cover portion 20B. A portion 1 9 B having substantially the same height as the upper end (P 1) of the front wheel W f in the longitudinal direction of the inner cover 19 as the front cover portion 20 F is a rear side cover as the rear cover portion 20 B It is in close proximity to or in contact with the V dashield 1 7 B. Inlet (inlet) 55 is formed below proximity or contact site 19 B of inner cover 19. Therefore, the front fork 12 and the front cover portion 2 0 F and the rear cover portion 2 0 B are close to each other. The front cover portion 20 F approaches or contacts the rear cover portion 20 B at the same height as the upper end of the front wheel W f susceptible to layout restrictions. This structure allows the vehicle to be compact in the longitudinal direction. Further, with this configuration, the air that has flowed above the front wheel W f is guided to the inlet 55 to facilitate the introduction of the air into the cover.

The inlet 55 extends forward and upward inside the front surface of the inner cover 19 as the front cover part 2 0 F from the front surface. This structure makes it easier to introduce air from the front and above while making the vehicle compact in the longitudinal direction.

The inlet 55 extends inward from the front surface of the front cover 2 OF. The introduction port 5 5 is up and down Contains multiple openings 5 to 7 aligned with. The front end of the lower opening 5 7 A among the plurality of openings 5 7 is positioned forward of the front end of the upper opening 5 7 B. This arrangement makes the vehicle longitudinally compact and facilitates the introduction of air from the front and above.

The inlet 55 is laterally spaced from the lateral center portion 19 C of the inner cover 19. With this arrangement, water and mud splashed up by the front wheel W f while traveling straight fly to the central portion of the inner cover 19 and are less likely to fly directly to the introduction port. Therefore, the mixture of water and mud can be suppressed.

The scoop 1 includes a front fender 13 which covers the top of the front wheel W f and is supported by the front fork 12. The rear end 13 A of the front fender 13 was positioned in the vicinity of the adjacent or contact portion 19 B of the inner cover 1 19. With this arrangement, the fender between the inner cover 19 and the front wheel Wf can be omitted, and the vehicle can be made compact in the longitudinal direction.

The upper surface of the front fender 13 defines a longitudinally extending recessed groove 13 B. This structure allows air to flow along the recessed groove 13 B of the front fender 13 and facilitates the introduction of air.

In the vicinity of the close contact portion 19 B of the first cover 19, the first best bar 19 is a convex portion projecting forward at a position vertically offset from the rear end of the front fender 13 6 1 Includes C This structure makes the vehicle compact in the longitudinal direction, and also prevents water and mud splashed by the front wheel W f from flying upward from the front fender 13.

The front force par portion 2 0 F includes a front leg shield 1 7 F that covers the front side of the frame 5 above the front wheel W f. The front cover portion 20 F includes an inner cover 19 that covers the front side of the frame 5 behind the front wheel W f separate from the front side radar shield 17 F. The upper end of the fin 1 19 is brought close to or in contact with the rear cover portion 2 0 B. The front cover part 2 0 F consists of upper and lower 2 parts 1 7 F, 1 9. With this structure, the inner cover 19 can be brought close to or in contact with the inner cover 19 so as to easily make the vehicle compact in the longitudinal direction and to easily introduce air from the front and the upper side. At least a portion of the front cover portion 20F extends rearward from the front end of the frame 5 and approaches or contacts the rear latch shield 17B as the rear cover portion 20B. This structure makes the vehicle compact in the longitudinal direction, and also guides the air flowing through the upper portion of the front wheel Wf to the inlet 55 so that the air can be easily introduced into the cover.

The scooter 1 includes an undercover 21 extending to the lower end of the inner cover 19 and extending rearward. The screen 1 includes a floor cover 15 which extends to the rear and is continuous with the rear cover portion 20B. Air is introduced from the inlet 55, through a space as a duct between the front cover portion 20F and the rear cover portion 20B, and through a wind guide path 43 between the undercover 21 and the floor cover 15 Led to the back of the Also, the under cover 1 1 defines a drainage hole 44. This makes it difficult for water and mud to stay in the air guide path 43. Industrial applicability

The inventive step ducts direct the air to the motor vehicle's motor. Therefore, this step is useful from the viewpoint of cooling the motor of the motorcycle. The present invention is not limited to the embodiments, and variations and modifications thereof are possible at the level of knowledge of those skilled in the art.

The content of Japanese Patent Application No. 2003-060418 (filed on March 6, 2003) is incorporated as a document into this application.

Claims

The scope of the claims

1. It is a motor cycle,

A longitudinally extending frame of the motorcycle in front of the passenger's legs;

A handle rotatably supported at an upper end of the frame;

A front fork pivoting with the handle;

A front wheel rotatably supported by the front fork;

Including a cover portion covering the frame,

The cover portion includes a rear cover portion covering the rear of the frame and a front cover portion covering the front of the frame,

The front force par portion has a proximity portion approaching or in contact with the rear cover portion at a height substantially the same as the upper end of the front wheel in the longitudinal direction.

Including an inlet for introducing air to the inside of the force paring,

The inlet is defined by the front cover portion at a position lower in the longitudinal direction than the proximity portion;

A motor cycle, wherein air is introduced from the inlet and guided longitudinally backward of the motor cycle through a space between the front force par and the rear cover.

2. The motor cycle of claim 1, wherein the inlet extends rearward and downward from the front surface of the front force par.

3. The motorcycle of claim 1

The inlet includes a plurality of openings extending rearward from the front surface of the front cover portion and aligned in the longitudinal direction,

The plurality of openings have a lower opening and an upper opening,

A motor support having a front end of the lower opening positioned forward of a front end of the upper opening; Dickle.

4. The motor cycle of claim 1,

The motorcycle is characterized in that the inlet is spaced apart in the lateral direction from a central portion of the front cover portion in the lateral direction of the motorcycle.

5. Mortgage cycle of claim 1 and additionally

A front fender covering the front wheel and supported by the front fork;

A motor cycle, wherein the rear end of the tongue is positioned near the proximity site.

6. The motor cycle of claim 5.

The upper surface of the front fender defines a groove extending in the longitudinal direction of the motor cycle.

7. The motor cycle of claim 5

The motorcycle according to any one of the preceding claims, wherein the front cover portion includes a convex portion that protrudes forward at a position offset upward and downward from the rear end of the front fender in the vicinity of the proximity portion.

8. The motorcycle of claim 1

The front cover portion is

A front upper cover portion that covers the front side of the frame above the front wheels;

And a front lower force bar portion covering the front side of the frame below an upper end of the front wheel, wherein the upper end of the front lower cover portion is in close proximity to or in contact with the rear cover portion.

9. The motor cycle of claim 1

A motorcycle, wherein at least a portion of the front cover portion extends rearward in the longitudinal direction from a front end of the frame and approaches or contacts the rear cover portion.

1 0. The motorcycle according to claim 1 and further

A lower cover portion that extends rearward and is continuous with the lower end of the front cover portion;

And an upper cover portion extending rearward and continuous with the rear cover portion;

Air is introduced from the inlet and directed to the rear of the motorcycle through the space between the front cover portion and the rear cover portion and the space between the lower cover portion and the upper cover portion. Led.

The lower cover portion defines a drainage hole, and a motor cycle.

1 1. The motorcycle is

And a motor

A wheel drivable by the motor;

Steering to establish a steering angle of the wheels;

A cowling that covers the steering and defines a duct for directing air to the motor.

The cowling is positioned below the upper end of the wheel in the longitudinal direction of the cycle and defines an intake for introducing air into the duct.

1 2. Claim 1 1 Motor cycle, and

The cowling includes a louver partitioning the inlet, and a motor cycle.

1 3. A cycle of claim 1 2, and The cowling extends from the inlet into the duct. 4. A motorcycle according to claim 1 further comprising

Including a fountain covering the wheels,

The fender has a guide for guiding air to the intake, a cowling.

5. Claim 1 4 motorcycles,

The guide has a groove, a motorcycle.