JP2020055378A - Cowl structure of straddle-type vehicle - Google Patents

Abstract

To provide a cowl structure of a straddle-type vehicle, which can prevent an inner part of a vehicle body from being exposed while effectively discharging exhaust air of a radiator and enhancing aerodynamic performance as a smooth appearance shape and which can improve driving performance.SOLUTION: A middle cowl 41 is disposed between a front cowl 40 and an under cowl 42 at least at a lateral side of a radiator 36. The middle cowl 41 includes a main cowl 46 and an outer cowl 47 disposed outward of the main cowl 46 in the vehicle width direction. The main cowl 46 includes a main cowl upper opening 46b along a lateral rim of the radiator 36. The outer cowl 47 is disposed overlapped with the main cowl upper opening 46b as viewed from the vehicle lateral side. The outer cowl 47 includes an outer cowl opening 47c, and the main cowl upper opening 46b and the outer cowl opening 47c are partially overlapped as viewed from the vehicle lateral side.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cowl structure for a saddle-ride type vehicle.

Conventionally, in a vehicle that includes a front cowl that covers the periphery of a steering wheel and an under cowl that covers a lower portion of a vehicle body, and a middle cowl that covers a side surface of the vehicle body between the front cowl and the under cowl, a portion that is located on a radiator side of the middle cowl. There is known a device provided with an opening (see, for example, Patent Document 1).
When a sports motorcycle is provided with a cowl, an opening for discharging exhaust air from a radiator is provided while forming an exterior body shape in consideration of aerodynamic characteristics.

JP 2010-64706 A

In Patent Literature 1, by providing the opening, it is possible to effectively exhaust the exhaust air from the radiator, but it becomes difficult to form a smoothly continuous surface that exposes the inside of the vehicle body and has an external appearance. .
SUMMARY OF THE INVENTION An object of the present invention is to provide a saddle-ride type vehicle capable of effectively discharging exhaust air from a radiator while suppressing exposure of the inside of a vehicle body, improving aerodynamic performance with a smooth external shape, and further improving drivability. To provide a cowl structure.

  The cowl structure of the saddle-ride type vehicle includes a headlight (44) disposed in front of the head pipe (15) on a body frame (10) including a main frame (16) extending rearward from the head pipe (15). ), An engine (11) arranged below the main frame (16), a radiator (36) arranged below the main frame (16) and in front of the engine (11), and the vehicle body frame In the cowl structure of the saddle-ride type vehicle, in which the cowl (38) covering the radiator (36) and the cowl (38) is supported, the cowl (38) includes a front cowl (40) covering the periphery of the headlight (44). ), An under cowl (42) arranged below the engine (11), the front cowl (40) and the under cowl (42). And a middle cowl (41) provided at least to the side of the radiator (36) between the main cowl, the middle cowl (41), and a vehicle of the main cowl (46). An outer cowl (47) disposed outward in the width direction; the main cowl (46) including a main cowl opening (46b) along a side edge (36a) of the radiator (36); The outer cowl (47) is provided so as to overlap the main cowl opening (46b) when viewed from the side of the vehicle. The outer cowl (47) has an outer cowl opening (47c), and the main cowl opening (46b) and the outer cowl opening (46). 47c) is characterized in that they partially overlap in a side view of the vehicle.

  In the above configuration, the main cowl opening (46b) extends rearward from a front edge (46g) along a side edge (36a) of the radiator (36) and an upper end of the front edge (46g). An upper edge (46e) and a rear edge (46f) bent at the rear end of the upper edge (46e) and extending forward are provided, and the rear edge (47b) of the outer cowl (47) is The upper edge (46e) and the rear edge (46f) of the main cowl opening (46b) have a similar shape to the upper edge (46e) and the upper edge (46e) of the main cowl opening (46b) when viewed from the side of the vehicle. It may be located ahead of the trailing edge (46f).

  In the above configuration, a space (98) is formed between the main cowl (46) and the outer cowl (47), and a wing (71) is arranged in the space (98), and the outer cowl opening ( 47c) may be located behind the wing (71) when viewed from the side of the vehicle.

  In the above configuration, the outer cowl (47) includes a front surface (47e) located in front of the outer cowl opening (47c) and a rear surface (47f) located behind the outer cowl opening (47c). The wing (71) is arranged between the front part (47e) and the main cowl (46), and the rear part (47f) is offset inward in the vehicle width direction with respect to the front part (47e). Then, it may be brought closer to the main cowl (46).

  Further, in the above configuration, the outer cowl opening (47c) is connected to an upper surface portion (47h) connecting upper portions of the front surface portion (47e) and the rear surface portion (47f), and is connected to the front surface portion (47e). A lower surface (47j) connecting the lower portion with the rear surface portion (47f), and the upper surface portion (47h) and the lower surface portion (47j) may be directed in the front-rear direction and the vehicle width direction. good.

Further, in the above configuration, an oil cooler (86) is provided below the radiator (36), and the main cowl (46) is provided on a side wall (46h) located on a side of the oil cooler (86). The side wall (46h) may have an opening (46c) behind the oil cooler (86) when viewed from the side of the vehicle.
Further, in the above configuration, the opening (46c) may include a louver (73) arranged along the inclination of the oil cooler (86).

  The cowl structure of the saddle-ride type vehicle has a cowl provided at least on the side of the radiator between the front cowl that covers the periphery of the headlight, the under cowl arranged below the engine, and each of the front cowl and the under cowl. The middle cowl has a main cowl and an outer cowl arranged on the outer side in the vehicle width direction of the main cowl, and the main cowl has a main cowl opening along a side edge of the radiator. The outer cowl is provided so as to overlap the main cowl opening in a vehicle side view, and the outer cowl has an outer cowl opening, and the main cowl opening and the outer cowl opening partially overlap in a vehicle side view. By overlapping in the side view of the vehicle, it is difficult to expose the main cowl opening, Exhaust air from the radiator can be effectively exhausted when stopping and traveling from the in cowl opening, and the main cowl and outer cowl can overlap in the vehicle width direction to form a smooth cowl surface shape, improving aerodynamic performance . In addition, since the main cowl opening and the outer cowl opening partially overlap each other when viewed from the side of the vehicle, the wind can escape in the vehicle width direction when the vehicle is banked, so that the vehicle body can be easily banked and the drivability can be improved.

  In the above configuration, the main cowling opening extends forward at the front edge along the side edge of the radiator, at the upper edge extending rearward from the upper end of the front edge, and at the rear end of the upper edge. A rear edge portion, and a rear edge portion of the outer cowl has a shape similar to the upper edge portion and the rear edge portion of the main cowl opening, and is located forward of the upper edge portion and the rear edge portion of the main cowl opening in a side view of the vehicle. Therefore, the main cowl and the outer cowl can be effectively blindfolded while giving a sense of unity of the shapes to the main cowl and the outer cowl, and the outer cowl can be prevented from obstructing the exhaust of the radiator exhaust air from the main cowl opening.

  Further, in the above configuration, a space is formed between the main cowl and the outer cowl, and the wing is disposed in the space, and the outer cowl opening is located behind the wing when viewed from the side of the vehicle. The wings can be arranged by utilizing the space, thereby effectively rectifying the traveling wind in the space.

  Further, in the above configuration, the outer cowl includes a front portion located in front of the outer cowl opening, and a rear surface located behind the outer cowl opening, and a wing is arranged between the front portion and the main cowl. , Since it is offset toward the main cowl in the vehicle width direction with respect to the front part, running wind can flow from the outer cowl opening to the rear of the vehicle, and accordingly, exhaust air from the main cowl opening Can easily flow backward.

  Further, in the above configuration, the outer cowl opening includes an upper surface portion connecting the upper portions of the front portion and the rear surface portion, and a lower surface portion connecting the lower portions of the front portion and the rear surface portion. Since the part is oriented in the front-rear direction and the vehicle width direction, the upper surface and the lower surface are oriented at least in the vehicle width direction by offsetting the front part and the rear part of the outer cowl in the vehicle width direction. The outer cowl opening, the front part, and the rear part can form a duct shape extending in the vehicle front-rear direction, thereby forming a flow of traveling wind in the vehicle front-rear direction.

Further, in the above configuration, an oil cooler is provided below the radiator, and the main cowl includes a side wall portion located on a side of the oil cooler, and the side wall portion is provided behind the oil cooler in a vehicle side view. The provision of the opening allows the exhaust air from the oil cooler to be effectively discharged through the opening.
Further, in the above configuration, since the opening has the louver arranged along the inclination of the oil cooler, the exhaust air from the oil cooler can be more easily discharged by the louver.

1 is a left side view of a motorcycle having a cowl structure according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a vehicle body front part of the motorcycle. FIG. 2 is a front view showing a front portion of a vehicle body of the motorcycle. FIG. 2 is a left side view showing a front part of the body of the motorcycle. FIG. 5 is a left side view showing a state in which an outer cowl is removed from a front portion of the vehicle body in FIG. 4. FIG. 5 is a left side view showing a state where a middle cowl is removed from a front part of the vehicle body in FIG. 4. FIG. 7 is a sectional view taken along line VII-VII of FIG. 4. FIG. 2 is a perspective view of a front part of the motorcycle as viewed obliquely from behind. FIG. 6 is a sectional view taken along line IX-IX of FIG. 5. It is a front view which shows the principal part of a cowl. FIG. 2 is a main part front view showing a vehicle body front part of the motorcycle. It is a left view which shows a front center cover and its periphery. FIG. 2 is a perspective view showing a lower portion of a front portion of a vehicle body of the motorcycle. It is a side view which shows a seat frame and its periphery. It is a perspective view showing a seat frame and its circumference. It is a perspective view showing the cowl structure of a 2nd embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description, directions such as front and rear, left and right, and up and down are the same as directions with respect to the vehicle body unless otherwise specified. In addition, the reference numeral FR shown in each drawing indicates the front of the vehicle, the reference UP indicates the upper part of the vehicle, and the reference LH indicates the left of the vehicle.
<First embodiment>
FIG. 1 is a left side view of a motorcycle 1 having a cowl structure according to a first embodiment of the present invention.
In the motorcycle 1, an engine 11 as a power unit is supported by a body frame 10, a front fork 12 that supports the front wheels 2 is steerably supported at the front end of the body frame 10, and a swing arm 13 that supports the rear wheels 3 is a vehicle body. The vehicle is provided at the rear of the frame 10.
The motorcycle 1 is a saddle-ride type vehicle in which an occupant sits so as to straddle a seat 14, and the seat 14 is provided above a rear portion of the body frame 10.

The body frame 10 includes a head pipe 15 forming a front end, a pair of left and right main frames 16 extending rearward and downward from the head pipe 15, a pair of left and right pivot frames 17 extending downward from the rear end of the main frame 16, A pair of left and right seat frames 18 extending rearward and upward from the frame 16 and the pivot frame 17 are provided.
The main frame 16 includes an engine hanger (not shown) that extends downward from a front portion of the main frame 16 and supports the engine 11.

The front fork 12 is supported by a head pipe 15 so as to be steerable left and right. A steering handle 21 is provided at an upper end of the front fork 12. The front wheel 2 is supported by an axle 2 a provided at a lower end of the front fork 12.
The swing arm 13 is pivotally supported by a pivot shaft 22 supported by the left and right pivot frames 17. The pivot shaft 22 extends horizontally in the vehicle width direction. The front end of the swing arm 13 is pivotally supported by a pivot shaft 22, and swings up and down about 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 rear suspension 24 extends between the vehicle body and the swing arm 13. The upper end of the rear suspension 24 is connected to the vehicle body. The upper end of the rear suspension 24 is connected to the engine 11 as a vehicle body, for example, via a suspension connecting portion (not shown) extending rearward from the rear end of the engine 11.
The lower end of the rear suspension 24 is connected to the swing arm 13 and the lower end of the pivot frame 17 via a link mechanism (not shown).

The engine 11 is disposed below the main frame 16 and in front of the pivot frame 17, and is fixed to the body frame 10.
The engine 11 includes a crankcase 28 that supports a crankshaft 27 that extends horizontally in the vehicle width direction, and a cylinder portion 29 that extends forward and upward from the front of the crankcase 28. The cylinder 29 accommodates a piston (not shown) that reciprocates in the cylinder 29. The cylinder axis 29a of the cylinder portion 29 is inclined forward with respect to the vertical.

A rear portion of the crankcase 28 is a transmission case portion 28a for housing a transmission (not shown). The output of the engine 11 is transmitted to the rear wheels 3 via a drive chain 30 that connects the output shaft of the transmission and the rear wheels 3.
The air cleaner box 31 is disposed above and behind the cylinder unit 29. The air cleaner box 31 is connected to an intake port on the rear surface of the cylinder unit 29 via a throttle body (not shown).
An exhaust pipe 32 of the engine 11 is drawn downward from an exhaust port on the front surface of the cylinder portion 29 and extends rearward below the engine 11. The rear end of the exhaust pipe 32 is connected to a muffler 33 arranged on the side of the rear wheel 3.
The fuel tank 35 is disposed between the seat 14 and the air cleaner box 31 above the main frame 16.
The radiator 36 for cooling the engine 11 is disposed in front of the engine 11.

The motorcycle 1 includes a vehicle body cover 37 that covers the vehicle body such as the vehicle body frame 10 and the engine 11.
The vehicle body cover 37 includes a cowl 38 at a front portion.
The cowl 38 includes a front cowl 40, a middle cowl 41, and an under cowl 42.
The front cowl 40 covers the upper part of the front fork 12 and the head pipe 15 from the front, and covers the periphery of the pair of left and right headlights 44. The middle cowl 41 includes a pair of left and right main cowls 46 that cover the front portion of the engine 11 from the side, and a pair of left and right outer cowls 47 disposed outside the left and right main cowls 46 in the vehicle width direction. The under cowl 42 covers the engine 11 from below.
The vehicle body cover 37 includes a tank cover 51 that covers a part of the air cleaner box 31 and the fuel tank 35, and a rear cover 52 that covers a rear part of the vehicle body.

A front fender 54 that covers the front wheel 2 from above is attached to the front fork 12. An inner fender 55 that covers the front part of the rear wheel 3 from above is attached to the swing arm 13. A rear fender 56 that covers the rear portion of the rear wheel 3 from above extends rearward and downward from the rear end of the seat frame 18.
The step 58 for the occupant to put his foot on is supported by the pivot frame 17 and is arranged behind the pivot frame 17.

FIG. 2 is a perspective view showing a front portion of the motorcycle 1. FIG. 3 is a front view showing the front part of the motorcycle 1.
As shown in FIGS. 2 and 3, a windscreen 61 disposed in the center and a pair of left and right rearview mirrors 62 disposed on both sides in the vehicle width direction of the windscreen 61 are provided above the front cowl 40. Is provided.
An intake port 64 that penetrates through the front cowl 40 is provided at a lower center portion of the front cowl 40 in the vehicle width direction.
The intake port 64 communicates with an intake device of the engine 11 (see FIG. 1) via a duct disposed below the front cowl 40.

A pair of left and right headlights 44 is provided below the front cowl 40 and on both sides in the vehicle width direction of the intake port 64. The inside of the left and right headlights 44 in the vehicle width direction and the lower portions of the left and right headlights 44 are covered with a front center cover 66.
The front center cover 66 is a part forming a lower part of the intake port 64, and an upper part of the intake port 64 is formed by the front cowl 40. That is, the intake port 64 is formed by the front cowl 40 and the front center cover 66.

The front portions of the left and right main cowls 46 are continuously connected to both side edges of the front center cover 66. The upper edges of the left and right outer cowls 47 are continuously connected to both side edges of the front cowl 40, and cover the outer portions of the left and right headlights 44 in the vehicle width direction.
The front edge 66a of the front center cover 66 and the front edges 46a, 46a of the left and right main cowls 46 form a cowling opening 68 which is an opening of the cowl 38.
The lower part of the front fork 12 is exposed from the cowling opening 68.
A plurality of wings 71 are provided on the outer surfaces of the front portions of the left and right main cowls 46 to rectify traveling wind. The plurality of wings 71 are covered by the outer cowl 47 from the side.

FIG. 4 is a left side view showing the front part of the motorcycle 1. FIG. 5 is a left side view showing a state where the outer cowl 47 is removed from the front part of the vehicle body in FIG.
As shown in FIG. 4, the main cowl 46 covers the cylinder portion 29 of the engine 11 and a part of the main frame 16 from the side. The main cowl 46 includes a main cowl upper opening 46b overlapping the main frame 16 when viewed from the side of the vehicle, and a main cowl lower opening 46c disposed below the main cowl upper opening 46b.
A louver 73 extending vertically is provided in the main cowl lower opening 46c so as to divide the main cowl lower opening 46c into front and rear.

The outer cowl 47 is formed such that a part of a front edge portion 47a thereof is along the front edge 46a of the main cowl 46 in a vehicle side view. A part of the rear edge 47b of the outer cowl 47 is formed along a part of the edge 46d of the main cowl upper opening 46b of the main cowl 46 (specifically, an upper edge 46e and a rear edge 46f). .
The outer cowl 47 includes an outer cowl opening 47c which is a long and narrow opening formed in front of the upper edge 46e of the main cowl upper opening 46b in a vehicle side view.
The main cowl upper opening 46b and the outer cowl opening 47c form an overlap space 74 that overlaps in a vehicle side view.
In the outer side surface 47d of the outer cowl 47, a front surface portion 47e located forward of the outer cowl opening 47c and a rear surface portion 47f located rearward of the outer cowl opening 47c have the front surface portion 47e in the vehicle width direction more than the rear surface portion 47f. Located outside.
A plurality of wings 71 are arranged on the main cowl 46 inside the front portion 47e in the vehicle width direction.

As shown in FIG. 5, the main cowl upper opening 46b of the main cowl 46 has an edge 46d formed in a triangular shape in a side view. The edge 46d includes a front edge 46g extending rearward and downward, an upper edge 46e extending rearward and downward from the upper end of the front edge 46g, and a rear edge extending forward and downward from the rear end of the upper edge 46e. 46f.
The front edge portion 46g overlaps the radiator 36 (specifically, a side edge portion 36a of the radiator 36) disposed inside the left and right main cowls 46 in the vehicle width direction in a vehicle side view, and the radiator 36 (specifically, the side edge portion). 36a).
In a side view of the vehicle, the rear portion of the radiator 36 is exposed from the main cowl upper opening 46b, but the portion of the radiator 36 exposed from the main cowl upper opening 46b is outside the outer cowl 47 (see FIG. 4) in the vehicle width direction. Covered from the outside and not exposed to the outside.
On the outer side surface 46k of the main cowl 46, a plurality of wings 71 are provided vertically above and below a main cowl front portion 46m located forward of the front edge portion 46g.

A radiator hose 75 extends from the radiator 36 toward the engine 11.
Below the radiator 36, an oil cooler 77 that cools oil in the engine 11 is arranged. The oil cooler 77 is covered from the outside in the vehicle width direction by a lower side wall portion 46h constituting a lower portion of the main cowl 46 and a front portion of the under cowl 42. Since the rear edge of the oil cooler 77 is located at the front of or below the front edge 46j of the main cowl lower opening 46c when viewed from the side of the vehicle, the oil cooler 77 is exposed to the outside. do not do.
The louver 73 urges the exhaust air heated by the oil cooler 77 and discharged to the rear from the inside of the cowl 38 to the outside through the main cowl lower opening 46c.

FIG. 6 is a left side view showing a state where the middle cowl 41 is removed from the front part of the vehicle body in FIG.
The cylinder portion 29 of the engine 11 includes a cylinder block 81 provided at an upper front portion of the crankcase 28, and a cylinder head 82 provided at an upper portion of the cylinder block 81. An oil pan 84 is provided below the crankcase 28.
A radiator 36 is disposed in front of the cylinder portion 29 so as to be inclined forward and upward. An oil cooler 86 is arranged below the radiator 36 and in front of the oil pan 84 so as to be inclined upward and rearward in the vicinity of the lower end of the radiator 36.
An upstream portion of the exhaust pipe 32 composed of a plurality of pipes connected to the cylinder head 82 is disposed between the engine 11 and the radiator 36 and the oil cooler 86. The exhaust pipe 32 extends downward from the cylinder head 82, and further bends behind the oil cooler 86 and extends rearward.

FIG. 7 is a sectional view taken along line VII-VII of FIG.
The plurality of wings 71 are formed integrally with a back plate 91 disposed inside the front wall 46n that forms the main cowl front surface 46m of the main cowl 46 in the vehicle width direction. The plurality of wings 71 and the back plate 91 constitute a wing molded body 92.
The front wall portion 46n of the main cowl 46 includes a plurality of elongated wing insertion holes 46p extending in the vehicle front-rear direction, and the wings 71 are inserted into the plurality of wing insertion holes 46p, respectively.

The back plate 91 is fastened to an inner plate 94 fixed inside the vehicle body by a fastening member such as a screw.
The tip portions 71a of the plurality of wings 71 and the inner side surface 47g of the outer cowl 47 are separated in the vehicle width direction.
As described above, by integrally forming the plurality of wings 71 on the back plate 91, the wing molded body 92 can be easily assembled. The number of man hours can be reduced.

FIG. 8 is a perspective view of the front part of the motorcycle 1 as viewed obliquely from behind.
The main cowl 46 includes, on an outer surface 46k, upper and lower surfaces 46q extending vertically and a vehicle width surface 46r extending inward in the vehicle width direction from upper edges of the upper and lower surfaces 46q.
The upper and lower surfaces 46q have upper portions, particularly an opening upper surface 46s located above the main cowl upper opening 46b, formed as a curved surface that gradually projects outward in the vehicle width direction as going upward.
A ridgeline 46t formed at the boundary between the upper and lower surfaces 46q and the vehicle width surface 46r extends in the vehicle front-rear direction while waving.
At the rear of the vehicle width surface 46r, a slit group 96 including a plurality of slits for discharging the traveling wind in the cowl 38 is formed. The plurality of slits extend in the vehicle width direction and are arranged at intervals in the vehicle front-rear direction.

As shown in FIGS. 4 and 8, the outer side surface 47d of the outer cowl 47 includes an upper surface portion 47h connecting the upper portions of the front portion 47e and the rear surface portion 47f, and lower portions of the front surface portion 47e and the rear surface portion 47f. And a lower surface portion 47j that connects between them.
The upper surface portion 47h is a surface above the outer cowl opening 47c. The lower surface portion 47j is a surface below the outer cowl opening 47c.
The front surface portion 47e projects outward in the vehicle width direction from the rear surface portion 47f, so that the upper surface portion 47h and the lower surface portion 47j are inclined in the vehicle front-rear direction. That is, the upper surface portion 47h and the lower surface portion 47j each have a front side located outside the rear side in the vehicle width direction. Therefore, the upper surface portion 47h and the lower surface portion 47j face (face) the vehicle rearward and outward in the vehicle width direction.

The outer cowl 47 forms a space 98 between the outer cowl 47 and the main cowl 46. A rear end opening 101 formed at the rear end of the space 98 between the outer cowl 47 and the main cowl 46 discharges the traveling wind from the front of the vehicle and the exhaust wind discharged from the main cowl upper opening 46b of the main cowl 46. I do.
An outer cowl opening 47c that opens toward the rear of the vehicle is disposed outside the rear end opening 101 in the vehicle width direction. The outer cowl opening 47c has the front portion 47e disposed outside the rear surface portion 47f in the vehicle width direction, and thus opens not only to the vehicle side but also to the rear of the vehicle.

  Thus, by providing the outer cowl opening 47c outside the rear end opening 101 in the vehicle width direction, the warmed exhaust air discharged from the main cowl upper opening 46b through the rear end opening 101 flows from the outer cowl opening 47c. It is possible to prevent the traveling wind discharged toward the rear of the vehicle from being discharged to the outside in the vehicle width direction, and to flow the flow to the rear of the vehicle. Thereby, the airflow flowing along the cowl 38 can be effectively rectified, and the aerodynamic performance can be improved.

FIG. 9 is a sectional view taken along line IX-IX of FIG.
The upper opening surface 46s of the main cowl 46 is curved so as to gradually protrude outward in the vehicle width direction as it goes upward.
The vehicle width surface 46r is bent obliquely upward and inward in the vehicle width direction at a substantially right angle from the upper edge of the upper opening surface 46s, and is further curved upward while extending inward in the vehicle width direction.
As described above, by forming the opening upper surface 46s, the warmed exhaust air discharged from the main cowl upper opening 46b can be flown as shown by the arrow A, and can be less likely to flow to the driver side.

FIG. 10 is a front view showing a main part of the cowl 38. FIG. FIG. 11 is a main part front view showing the front part of the motorcycle 1.
As shown in FIG. 10, the left and right front cowls 40, the left and right outer cowls 47, and the front center cover 66 form a pair of left and right headlight openings 38a for exposing the left and right headlights 44 (see FIG. 3).
An edge 38b of the headlight opening 38a is formed by an upper edge 38c formed by the front cowl 40 and the outer cowl 47, an inner edge 38d formed by the front center cover 66, and the outer cowl 47 and the front center cover 66. A lower edge 38e.

The upper edge portion 38c has an upper boundary portion 38f which is a boundary portion between the front cowl 40 and the outer cowl 47. The lower edge 38e has a lower boundary 38g that is a boundary between the outer cowl 47 and the front center cover 66.
In this manner, by providing the upper boundary 38f at the upper edge 38c and the lower boundary 38g at the lower edge 38e, a new impression can be given around the headlight 44, and the appearance can be improved. .

The front center cover 66 includes a pair of left and right outer side surfaces 66b located below the left and right headlight openings 38a. The left and right outer surface portions 66b and the inner surface portion 46u of the main cowl 46 adjacent to the left and right outer surface portions 66b form a curved surface 38h that continuously curves backward. As a result, the traveling wind striking the left and right outer side surfaces 66b of the front center cover 66 is directed to the front end opening 102 formed at the front end of the space 98 between the main cowl 46 and the outer cowl 47 as shown by the arrow B. Flows along the inner side surface portion 46u of the main cowl 46 and further toward the uppermost wing 71.
As described above, by forming the curved surface 38h for promoting the inflow of the air flow into the space 98, the control of the air flow by the cowl 38 can be improved, and the aerodynamic performance can be improved.

As shown in FIG. 11, when the horizontal lines 105 and 106 are drawn on the uppermost edge 68a of the cowling opening 68 of the cowl 38 and the uppermost edge 54a of the front fender 54, respectively, Of the plurality of wings 71, the wing 71 arranged at the uppermost position is arranged.
Further, when the horizontal line 107 passing through the side upper end 54c of the pair of left and right fork guards 54b provided integrally with the front fender 54 is drawn, all the plurality of wings 71 are arranged between the horizontal lines 105, 107. You.
In this way, by arranging the wings 71 in accordance with the height of the opening 108 formed by the cowling opening 68 and the front fender 54 in a front view of the vehicle, the traveling wind deviated to both sides from the opening 108 is reduced. Rectification can be performed by the wing 71, and aerodynamic performance can be improved.

FIG. 12 is a left side view showing the front center cover 66 and its surroundings.
As shown in FIGS. 10 and 12, the front center cover 66 is disposed at the center in the vehicle width direction so as to be sandwiched between the left and right main cowls 46, and protrudes forward from the left and right main cowls 46.
The front center cover 66 is disposed forward of the left and right outer cowls 47 and is exposed to the side of the vehicle.
In this way, by projecting the front center cover 66 forward of the vehicle from the left and right main cowls 46 and the left and right outer cowls 47, a new impression can be given to the front of the vehicle body, and the appearance can be improved.

FIG. 13 is a perspective view showing the lower part of the front part of the motorcycle 1.
The lower portion of the cowl 38 gradually tapers downward, and the interval between the left and right main cowls 46 and the left and right outer cowls 47 in the vehicle width direction gradually decreases.
A vertically long oil cooler 86 (see FIG. 6) is disposed on the lower side wall portion 46h of the left and right main cowls 46, the lower end portions of the left and right outer cowls 47, and the front portion of the left and right under cowls 42 in the vehicle width direction. . The oil cooler 86 is covered with an oil cooler cover 111 from the front.
The oil cooler cover 111 includes a frame portion 111a, a vertical bar portion 111b extending vertically in the vehicle width direction central portion of the frame portion 111a, and a plurality of louvers extending in the vehicle width direction from the vertical bar portion 111b to both side portions of the frame portion 111a. 111c.

The plurality of louvers 111c are arranged at a predetermined distance in the vertical direction, and each louver 111c is inclined forward and upward.
In this manner, by tilting the plurality of louvers 111c upward, the traveling wind from obliquely upward flowing along the surface of the radiator 36 disposed in the forwardly inclined position above the oil cooler 86 is covered by the oil cooler cover. It can be easily installed behind 111.
In addition, the plurality of louvers 111c raised forward can prevent a stepping stone or the like jumped up from the front wheel 2 from entering between the louvers 111c, thereby protecting the oil cooler 86.

FIG. 14 is a side view showing the seat frame 18 and its surroundings. FIG. 15 is a perspective view showing the seat frame 18 and its surroundings.
As shown in FIGS. 14 and 15, the seat frame 18 includes a pair of left and right upper frames 113, a pair of left and right lower frames 114, and a plurality of reinforcing frames 115.
The left and right upper frames 113 extend obliquely rearward and upward from the rear portions of the left and right main frames 16, respectively. The left and right lower frames 114 extend obliquely upward and rearward from below the left and right upper frames 113 from above the left and right pivot frames 17, respectively. The upper frame 113 and the lower frame 114 are connected at their rear ends. The plurality of reinforcing frames 115 connect the upper frame 113 and the lower frame 114.

The front end 113a of the upper frame 113 is formed in a tubular shape having a vertically extending through hole 113b formed therein, and the cylindrical front end 113a is formed by a bolt 117 inserted into the through hole 113b. It is fastened to a boss 16b formed on 16a.
The front end 114a of the lower frame 114 is formed in a cylindrical shape having a screw hole extending in the vehicle width direction, and the mounting hole formed on the rear edge 17a of the pivot frame 17 is formed in the screw hole of the cylindrical front end 114a. A bolt 118 passing through the portion 17b is screwed.

In this way, by supporting the front end 113a of the upper frame 113 in the vertical direction, the width of the fuel tank 35 supported by the left and right main frames 16, that is, the capacity, can be further increased.
Further, by supporting the front end portion 114a of the lower frame 114 in the vehicle width direction, the lower frame 114 can be disposed more inward in the vehicle width direction, and the width of the lower portion of the seat 14 in the vehicle width direction can be made slimmer. .

<Second embodiment>
FIG. 16 is a perspective view showing the cowl structure of the second embodiment.
Regarding the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
The main cowl 121 is provided with a main cowl upper opening 46b at an upper portion, and a plurality of wings 71 are provided on an outer surface 121a of the main cowl 121 on a main cowl front portion 121b forward of a front edge 46g of the main cowl upper opening 46b. It is protruding. The plurality of wings 71 are provided so as to protrude outward in the vehicle width direction while being vertically separated.
An opening 121c into which the plurality of wings 71 are inserted is formed in the main cowl front part 121b, and the plurality of wings 71 protrude from the opening 121c.

A wing molded body 92 having a plurality of wings 71 (see also FIG. 7) is slidable between the upper edge 121d and the lower edge 121e of the opening 121c as shown by an arrow C, and the upper edge is slidable. It can be fixed to the inner plate 94 (see FIG. 7) at any position between the lower edge 121e and the lower edge 121e.
That is, the positions of the plurality of wings 71 can be changed in the direction of arrow C.
As described above, since the positions of the plurality of wings 71 can be arbitrarily adjusted, the aerodynamic characteristics can be changed.

As shown in FIGS. 1, 4 and 5 described above, the motorcycle 1 as a saddle-ride type vehicle has a headlight 44, a headlight 44, a vehicle body frame 10 having a main frame 16 extending rearward from the head pipe 15. The engine 11, the radiator 36, and the cowl 38 are supported.
The headlights 44 are arranged in front of the head pipe 15, the engine 11 is arranged below the main frame 16, the radiator 36 is arranged below the main frame 16 and in front of the engine 11, and the cowl 38 is The frame 10 and the radiator 36 are covered.

The cowl 38 includes a front cowl 40, an under cowl 42, and a middle cowl 41. The front cowl 40 covers the periphery of the headlight 44, the under cowl 42 is disposed below the engine 11, and the middle cowl 41 is at least laterally of the radiator 36 between each of the front cowl 40 and the under cowl 42. Provided.
The middle cowl 41 includes a main cowl 46 and an outer cowl 47 disposed outside the main cowl 46 in the vehicle width direction.
The main cowl 46 has a main cowl upper opening 46b as a main cowl opening along the side edge 36a of the radiator 36. The outer cowl 47 is provided so as to overlap the main cowl upper opening 46b in a vehicle side view. The outer cowl 47 has an outer cowl opening 47c, and the main cowl upper opening 46b and the outer cowl opening 47c partially overlap each other when viewed from the side of the vehicle.

According to this configuration, the outer cowl 47 overlaps with the main cowl upper opening 46b in the vehicle side view, so that the main cowl upper opening 46b is hardly exposed, and the radiator 36 exhausts air when stopping and traveling from the main cowl upper opening 46b. Can be effectively discharged.
Furthermore, since the main cowl 46 and the outer cowl 47 overlap in the vehicle width direction, a smooth cowl surface shape can be obtained, and aerodynamic performance can be improved.
Further, since the main cowl upper opening 46b and the outer cowl opening 47c partially overlap each other when viewed from the side of the vehicle, the wind can escape in the vehicle width direction when the vehicle is banked. .

As shown in FIGS. 4 and 5, the main cowl upper opening 46b has a front edge 46g along the side edge 36a of the radiator 36, and an upper edge extending rearward from the upper end of the front edge 46g. 46e, and a rear edge 46f that bends at the rear end of the upper edge 46e and extends forward.
The rear edge portion 47b of the outer cowl 47 has a shape similar to the upper edge portion 46e and the rear edge portion 46f of the main cowl upper opening 46b, and the upper edge portion 46e and the rear edge portion 46f of the main cowl upper opening 46b in a vehicle side view. It is located ahead than.
According to this configuration, the main cowl 46 and the outer cowl 47 are effectively blindfolded while giving a sense of unity of the shape, and the outer cowl 47 is used to discharge the radiator 36 from the main cowl upper opening 46b. It is possible to suppress hindering wind discharge.

As shown in FIGS. 2 and 8, a space 98 is formed between the main cowl 46 and the outer cowl 47, a wing 71 is disposed in the space 98, and the outer cowl opening 47c 71 is located behind.
According to this configuration, the wings 71 can be arranged by utilizing the space 98 between the main cowl 46 and the outer cowl 47, whereby the traveling wind in the space 98 can be effectively rectified.

As shown in FIGS. 4, 5, and 8, the outer cowl 47 includes a front surface portion 47e located in front of the outer cowl opening 47c, and a rear surface portion 47f located behind the outer cowl opening 47c. The wing 71 is arranged between the front part 47e and the main cowl 46, and the rear part 47f is offset inward in the vehicle width direction with respect to the front part 47e and is closer to the main cowl 46.
According to this configuration, the traveling wind can flow from the outer cowl opening 47c to the rear of the vehicle, and accordingly, the exhaust air from the main cowl upper opening 46b can easily flow to the rear.

Also, as shown in FIGS. 4 and 8, the outer cowl opening 47c is provided with an upper surface portion 47h connecting the upper portions of the front surface portion 47e and the rear surface portion 47f, and a lower portion of the front surface portion 47e and the rear surface portion 47f. And a lower surface portion 47j that connects between them. The upper surface 47h and the lower surface 47j are oriented in the front-rear direction and the vehicle width direction.
According to this configuration, by offsetting the front surface portion 47e and the rear surface portion 47f of the outer cowl 47 in the vehicle width direction, the upper surface portion 47h and the lower surface portion 47j can be shaped to be at least directed in the vehicle width direction. Thus, a duct shape extending in the vehicle front-rear direction can be formed by the outer cowl opening 47c, the front surface portion 47e, and the rear surface portion 47f, and a flow of traveling wind in the vehicle front-rear direction can be formed.

As shown in FIGS. 5 and 6, an oil cooler 86 is provided below the radiator 36. The main cowl 46 has a lower side wall 46h as a side wall located on the side of the oil cooler 86. The lower side wall 46h has a lower main cowl as an opening behind the oil cooler 86 in a vehicle side view. An opening 46c is provided.
According to this configuration, the exhaust air from the oil cooler 86 can be effectively exhausted from the main cowl lower opening 46c.

Further, the main cowl lower opening 46c includes a louver 73 arranged along the inclination of the oil cooler 86.
According to this configuration, the exhaust air from the oil cooler 86 can be more easily exhausted by the louver 73.

The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
The present invention can be applied not only to the case where the present invention is applied to the motorcycle 1 but also to a straddle-type vehicle including other than the motorcycle 1.

1 Motorcycle (saddle-riding type vehicle)
Reference Signs List 10 body frame 11 engine 15 head pipe 16 main frame 36 radiator 36a side edge 38 cowl 40 front cowl 41 middle cowl 42 under cowl 44 headlight 46 main cowl 46b main cowl upper opening (main cowl opening)
46c Main cowl lower opening (opening)
46e Upper edge 46f Rear edge 46g Front edge 46h Lower side wall (side wall)
47 outer cowl 47b rear edge 47c outer cowl opening 47e front 47f rear 47h upper 47j lower 71 wing 86 oil cooler 98 space

Claims (7)

A vehicle body frame (10) having a main frame (16) extending rearward from the head pipe (15), a headlight (44) disposed in front of the head pipe (15), and the main frame (16); , A radiator (36) disposed below the main frame (16) and in front of the engine (11), the body frame (10) and the radiator (36) A cowl structure of a saddle-ride type vehicle in which a cowl (38) covering
The cowl (38) includes a front cowl (40) covering the periphery of the headlight (44), an under cowl (42) disposed below the engine (11), the front cowl (40), and the cowl (40). A middle cowl (41) provided between each of the under cowls (42) at least on a side of the radiator (36); the middle cowl (41) includes a main cowl (46) and the main cowl; An outer cowl (47) arranged outwardly in the vehicle width direction of the main cowl (46), wherein the main cowl (46) is provided with a main cowl opening (46b) along a side edge (36a) of the radiator (36). The outer cowl (47) is provided so as to overlap the main cowl opening (46b) in a vehicle side view, and the outer cowl (47) Utakauru provided with an opening (47c), wherein a main cowl opening (46b) and said Autakauru opening (47c), a cowl structure for a saddle type vehicle, wherein a partially overlapped when viewed from the side of the vehicle.   The main cowl opening (46b) has a front edge (46g) along a side edge (36a) of the radiator (36) and an upper edge (46g) extending rearward from the upper end of the front edge (46g). 46e) and a rear edge (46f) bent at the rear end of the upper edge (46e) and extending forward. The rear edge (47b) of the outer cowl (47) is provided with the main cowl opening ( 46b) has a shape similar to that of the upper edge portion (46e) and the rear edge portion (46f), and the upper edge portion (46e) and the rear edge portion (46e) of the main cowl opening (46b) in a vehicle side view. The cowl structure for a saddle-ride type vehicle according to claim 1, wherein the cowl structure is located forward of (46f).   A space (98) is formed between the main cowl (46) and the outer cowl (47), a wing (71) is disposed in the space (98), and the outer cowl opening (47c) The cowl structure for a saddle-ride type vehicle according to claim 1 or 2, wherein the cowl structure is located behind the wing (71) when viewed.   The outer cowl (47) includes a front surface (47e) located in front of the outer cowl opening (47c), and a rear surface (47f) located behind the outer cowl opening (47c). ) And the main cowl (46), the wing (71) is arranged, and the rear surface (47f) is offset inward in the vehicle width direction with respect to the front surface (47e). 46) The cowl structure of a saddle-ride type vehicle according to claim 3, wherein the cowl structure is brought closer to the vehicle.   The outer cowl opening (47c) includes an upper surface portion (47h) connecting the upper portions of the front surface portion (47e) and the rear surface portion (47f), a front surface portion (47e) and the rear surface portion (47f). The lower surface (47j) which connects between each lower part of said, The said upper surface part (47h) and the said lower surface part (47j) are oriented in the front-back direction and the vehicle width direction, The Claims 4 characterized by the above-mentioned. Cowl structure of saddle-ride type vehicle.   An oil cooler (86) is provided below the radiator (36), and the main cowl (46) includes a side wall (46h) located on a side of the oil cooler (86). The saddle-ride type vehicle according to any one of claims 1 to 5, wherein the (46h) includes an opening (46c) behind the oil cooler (86) in a vehicle side view. Cowl structure.   The cowl structure of a saddle-ride type vehicle according to claim 6, wherein the opening (46c) includes a louver (73) arranged along an inclination of the oil cooler (86).

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