JP2013071552A - Exterior component for saddle-type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide exterior components for a saddle-type vehicle in which air resistance in turning the vehicle is reduced while improving windbreak/waterproof performance and a protective function.SOLUTION: In exterior components (cowl 26, windscreen 56) of a motorcycle 10 including an outer face which covers the outer periphery of the motorcycle 10, guides travel winds from front to back and is spread to the outside in a vehicle width direction toward the back, the exterior components 26, 56 include travel wind separation sections 26a, 26b, 26c and travel wind separation sections 56a, 56b, 56c which are protruded portions protruded vertically or laterally from outer surfaces of the exterior components in the shape of band and in which rear ends of the protruded portions are separated from the outer surfaces of the exterior components 26, 56 by a predetermined distance.

Description

  The present invention relates to an exterior part of a saddle riding type vehicle that covers the outside of a vehicle body.

  In a straddle-type vehicle such as a motorcycle, air resistance is reduced by rectifying the traveling wind flowing around the vehicle body with a cowl or the like during traveling, and straightness is improved. As an exterior part of such a saddle type vehicle such as a cowl, there is known one in which a large number of air holes are provided in a fairing that covers a vehicle body to reduce air resistance during turning (see, for example, Patent Document 1). .

  According to FIG. 1 of Patent Document 1, a fairing 2 of a motorcycle is formed in a vertically divided structure of an upper cowl 12 having an upper conical section and a lower cowl 13 having a constricted section. And from the front of the handle 4 to both sides of the vehicle body below the fuel tank 8. In the fairing 2, a large number of vent holes 20 are opened so as to penetrate the front and back surfaces so as to be distributed throughout the fairing 2.

Japanese Patent No. 3549162

However, in Patent Document 1, by providing the vent hole 20, traveling wind, rainwater, dirt, sand, and the like can easily enter from the outside of the fairing 2 through the vent hole 20, that is, windproof / waterproof performance, protective function. May fall.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a straddle-type vehicle exterior component that reduces air resistance during turning of the vehicle while improving windproof / waterproof performance and protection function. There is to do.

In order to solve the above-described problems, the present invention includes an outer surface (26g) that covers the outer periphery of the saddle riding type vehicle (10) and that guides the traveling wind from the front to the rear and spreads outward in the vehicle width direction as it goes rearward. In the exterior component of the saddle-ride type vehicle, the exterior component (26, 46, 56) is a projecting portion projecting outwardly from the outer surface (26g) in a vertical or lateral direction in a belt shape, and behind the projecting portion. An end is provided with the traveling wind peeling part (26a-26c, 26s, 46a-46b, 56a-56c) which is separated predetermined distance from the outer surface (26g) of the said exterior components (26,46,56).
According to this configuration, a peeling layer can be formed in the air flow by providing the exterior part with a traveling wind peeling part that is a protruding part that protrudes in a vertical or horizontal direction outward from the outer surface. The restraining force of the vehicle body due to the traveling wind can be weakened. Therefore, by reducing the air resistance when turning the vehicle and reducing the above-mentioned restraining force that keeps the running wind passing through the left and right sides of the vehicle from standing straight when the vehicle is tilted in either the left or right direction from straight running. The initial movement at the time of turning can be improved.

Moreover, in the part without the traveling wind peeling part of the exterior part, the flow of air can be rectified by guiding the traveling wind from the front to the rear, and the straightness of the vehicle can be ensured.
Furthermore, since the conventional vent is not opened, the waterproof / dustproof function and the protective function of the exterior part can be improved. Furthermore, since the traveling wind peeling portion serves as a reinforcing rib for the exterior part, the strength and rigidity of the exterior part can be increased.

In the above-described configuration, it is desirable that the traveling wind peeling portions (26a to 26c, 26s, 46a to 46b, and 56a to 56c) are formed in an outer rear inclined portion that extends outward and rearward of the vehicle body. According to this configuration, it is possible to further reduce the air resistance behind the traveling wind separation part by separating the traveling wind at a portion where the traveling wind spreads in the vehicle width direction, and to improve the initial movement when the vehicle turns. it can.
In the above configuration, the exterior component (26) includes an outer surface (26g) extending left and right rearward from the vehicle body center (67) in the vehicle width direction, and the traveling wind peeling portions (26a to 26c) (67) and the side part outermost end (26k) of the exterior component (26), the vehicle width direction is arranged within a range ½ of the side outermost end (26k). Is desirable. According to this configuration, the flow velocity of the traveling wind is higher than that of the vehicle body center side in a range that is ½ from the outermost side edge of the exterior part to the vehicle width direction inner side. By arranging the traveling wind separation part at the position, the air resistance behind the traveling wind separation part can be further reduced, and the initial movement at the time of turning of the vehicle can be improved.

In the above configuration, it is desirable that the traveling wind peeling portion (26s) has a triangular cross section with a front surface formed on a slope (26t). According to this configuration, it is possible to exert the peeling effect on the back side of the triangular cross section while reducing the air resistance by flowing the traveling wind along the slope on the front side.
In the above configuration, the exterior parts (26, 46, 56) are arranged on the front fork (13) from both sides of the front fork (13) that supports the front wheel (12) of the saddle riding type vehicle (10). The side cowl (54) covers both sides of the power unit (14) disposed behind the vehicle, and in the side cowl (54), the traveling wind peeling portions (26a to 26c) are formed from the upper part to the lower part. It is desirable that According to this configuration, it is possible to form a long traveling wind separation portion above and below the side surface of the vehicle body, and to widen the separation range while reinforcing the cowl with the traveling wind separation portion.

In the above configuration, the exterior component (26, 46, 56) includes a windbreak plate (56) that is positioned above the front fork (13) and extends rearward and upward. In the windbreak plate (56), It is desirable that the traveling wind peeling portions (56a to 56c) extend in the left-right direction. According to this configuration, it is possible to form a traveling wind peeling layer while reinforcing the windbreak plate with the traveling wind peeling portion even when the windbreak plate is enlarged by forming a long traveling wind peeling portion on the left and right. The initial movement of the vehicle when turning can be improved.
Moreover, in the said structure, the said exterior component (26) is provided with the trough part (58) extended in a vehicle body front-back direction, and the said travel wind peeling part (26a-26c) is arrange | positioned at this trough part (58). Is desirable. According to this configuration, the traveling wind separation part is arranged in the valley where the flow velocity of the traveling wind becomes higher, so that the separation effect of the traveling wind can be enhanced, and the initial movement at the time of turning of the vehicle is further improved. be able to.

Further, in the above configuration, a radiator (34) is disposed in the side cowl (54), and the side cowl (54) is used to discharge the exhaust air from the radiator (34) to the outside of the side cowl (54). It is desirable that the traveling wind peeling portion (26a) is disposed in front of the air exhaust port (52a) formed on the side portion of According to this structure, the effect by peeling can further be heightened by peeling the part by which the driving | running | working wind which was not disturb | confused by the exhaust air of a radiator was rectified.
In the above-described configuration, it is preferable that the traveling wind separation portion (26a) is disposed above a front wheel (12) included in the saddle riding type vehicle (10). According to this structure, the effect by peeling can be further heightened by peeling the rectification | straightening part of the driving | running | working wind in which the flow of driving | running | working wind is not disturb | confused by rotation of a front wheel.

In the present invention, by providing the running wind peeling portion which is the protruding portion on the exterior part, a peeling layer can be formed in the air flow, and the restraining force of the vehicle body by the running wind can be weakened. Therefore, by reducing the air resistance at the time of turning the vehicle, when the vehicle body is tilted in either the left or right direction from straight running, the restraining force that keeps the running wind passing through the left and right sides of the vehicle body upright is reduced. The initial movement at the time of turning can be improved.
Moreover, in the part without the traveling wind peeling part of the exterior part, the flow of air can be rectified by guiding the traveling wind from the front to the rear, and the straightness of the vehicle can be ensured. Furthermore, since the conventional vent is not opened, the waterproof / dustproof function and the protective function of the exterior part can be improved. Furthermore, since the traveling wind peeling portion serves as a reinforcing rib for the exterior part, the strength and rigidity of the exterior part can be increased.
In addition, since the traveling wind separation part is formed on the outer rear inclined part that spreads outward and rearward of the vehicle body, the traveling wind is separated at the part where the traveling wind spreads in the vehicle width direction, so that The air resistance can be further reduced, and the initial movement when the vehicle turns can be improved.

In addition, the exterior part includes an outer surface extending left and right rearward from the center of the vehicle body in the vehicle width direction. Since it is arranged in the inner range by 1/2 from the outer end, the flow velocity of the traveling wind is higher in the range from the outermost side of the exterior part to the inner side in the vehicle width direction than in the vehicle body center side. Therefore, by arranging the traveling wind separation part at a position where the flow velocity of the traveling wind becomes high, the air resistance behind the traveling wind separation part can be further reduced, and the initial movement at the time of turning of the vehicle is improved. be able to.
In addition, since the traveling wind peeling portion has a triangular cross section with the front surface formed on a slope, the running wind is allowed to flow along the slope of the front surface to reduce the air resistance while exhibiting the peeling effect on the back side of the triangular cross section. be able to.
The exterior parts are side cowls that cover both sides of the power unit that are arranged behind the front fork from both sides of the front fork that supports the front wheels of the saddle-ride type vehicle. Since it is formed from the upper part to the lower part of the part, it is possible to form a long traveling wind peeling part on the upper and lower sides of the vehicle body, and to widen the peeling range while reinforcing the side cowl part with the traveling wind peeling part it can.

Further, the exterior part is a windbreak plate that is located above the front fork and extends rearward and upward. In the windbreak plate, since the traveling wind peeling portion extends in the left-right direction, a long running wind peeling portion is formed on the left and right. Thus, even when the windshield plate is made large, the traveling wind peeling portion can be formed while reinforcing the windshield plate at the traveling wind peeling portion, and the initial movement at the time of turning of the vehicle can be improved.
In addition, the exterior part includes a trough extending in the longitudinal direction of the vehicle body, and the traveling wind separation part is disposed in the valley, so the traveling wind separation part is disposed in the trough where the traveling wind flow velocity is higher. As a result, the separation effect of the traveling wind can be enhanced, and the initial movement of the vehicle when turning can be further improved.

A radiator is arranged in the side cowls arranged on the left and right sides of the saddle riding type vehicle, and in order to exhaust the wind exhausted from the radiator to the outside of the side cowl, the front of the exhaust vent formed in the side part of the side cowl. Since the traveling wind peeling portion is disposed on the surface, the effect of the peeling can be further enhanced by peeling the portion where the traveling wind that is not disturbed by the exhaust air from the radiator is rectified.
In addition, since the traveling wind separation unit is disposed above the front wheel provided in the saddle-ride type vehicle, by separating the rectifying portion of the traveling wind in which the traveling wind flow is not disturbed by the rotation of the front wheel, The effect can be further enhanced.

It is a left view which shows a saddle-ride type vehicle provided with the exterior component of this invention. It is a front view showing a saddle riding type vehicle. It is the III-III sectional view taken on the line of FIG. (A) is a perspective view which shows a rectangular protrusion part, (b) is a perspective view which shows a triangular protrusion part. (A) is an action figure which shows the effect | action of a rectangular protrusion part, (b) is an action figure which shows the effect | action of a triangular protrusion part. It is a graph explaining the effect of a driving | running | working wind peeling part.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the description, descriptions of directions such as front and rear, right and left and up and down are the same as directions with respect to the vehicle body unless otherwise specified. Moreover, the arrow (FRONT) shown in each figure has shown the vehicle body front.
FIG. 1 is a left side view showing a saddle riding type vehicle equipped with an exterior part of the present invention.
The motorcycle 10 includes a front fork 13 for steering and suspending a front wheel 12, a power unit 14, a swing arm 17 and a rear cushion unit 18 for suspending a rear wheel 16, and a fuel tank 21 for storing fuel. And a driver seat 23 on which the driver 22 sits, and a passenger seat 24 on which the passenger sits, and a cowl 26 as an exterior part covering the front upper part of the vehicle body and the left and right sides of the vehicle body. It is.

The front fork 13 is attached to the front end portion of the body frame so as to be steerable, and the front wheel 12 is rotatably supported via a bar handle 31 at the upper end portion of the front fork 13 and an axle 32 at the lower end portion. Reference numeral 33 denotes a front fender attached to the front fork 13 so as to cover the upper part of the front wheel 12.
The power unit 14 includes a V-type engine having a crankshaft extending in the front-rear direction and a transmission connected to the V-type engine, and is disposed at the lower part of the front portion of the vehicle body frame behind the front wheels 12. Reference numeral 34 denotes a radiator disposed inside the cowl 26 and in front of the upper portion of the power unit 14.

The vehicle body frame includes a pair of left and right pivot plates 36, 36 (only the pivot plate 36 on the front side is shown) disposed behind the power unit 14, and a pivot shaft 37 is attached to the pivot plates 36, 36. A swing arm 17 is attached to a shaft 37 so as to be swingable up and down, and a rear wheel 16 is rotatably supported by a rear end portion of the swing arm 17 via an axle 38.
The swing arm 17 has a hollow portion formed therein, and a drive shaft 41 that connects the output shaft side of the transmission and the rear wheel 16 side is housed in the hollow portion. Power is transmitted to 16.

The rear cushion unit 18 has an upper end portion attached to the vehicle body frame and a lower end portion attached to the upper portion of the swing arm 17. The rear cushion unit 18 attenuates vibration of the vehicle body with respect to the rear wheel 16. Reference numeral 42 denotes a rear fender that covers the upper portion of the rear wheel 16, 43 denotes a step in which the driver 22 puts his / her foot, and 44 denotes a pillion step in which the passenger puts his / her foot.
The fuel tank 21 is attached to the front upper part of the vehicle body frame, and a driver seat 23 and a passenger seat 24 provided separately behind the driver seat 23 are arranged behind the fuel tank 21, and the passenger seat Pannier cases 46 and 46 (only the front side pannier case 46 is shown) are provided as exterior parts for storing luggage on both sides of 24. Reference numeral 47 denotes a grab rail that is held by the passenger.

The cowl 26 includes an upper cowl 51 that covers the front and front sides of the bar handle 31, and middle cowls 52, 52 ( Only the middle cowl 52 on the near side is shown) and the lower cowl 53, 53 (only the lower cowl 53 on the near side) covering the lower part of the power unit 14 continuously from the lower part of these middle cowls 52, 52 are integrated. It is the exterior part provided in.
The upper cowl portion 51 extends obliquely rearward and upward in a side view, and a wind screen 56 as an exterior part is attached to an upper end portion.
The wind screen 56 extends obliquely rearward and upward continuously from the upper cowl portion 51 and covers the upper portion of the bar handle 31.

The middle cowl 52 is provided with an exhaust port 52a for discharging the warmed traveling air (exhaust air) after passing through the radiator 34 to the center, and a driver's leg at the rear end of the middle cowl 52. Leg shield 57 which covers the lower part from the front, more specifically from the knee, is provided.
On the outer surface of the boundary portion between the upper cowl portion 51 and the middle cowl portion 52, a trough portion 58 that extends substantially horizontally in the front-rear direction is formed. Reference numeral 61 denotes a rearview mirror attached to the upper part of the middle cowl part 52, 62 denotes a headlamp attached to the front end part of the upper cowl part 51 and the middle cowl part 52, and 62a denotes a front end of the headlamp 62 (of the motorcycle 1). The front end of the car body).
The middle cowl portion 52 and the lower cowl portion 53 are parts constituting a side cowl 54, and the side cowl 54 extends from both front sides of the front fork 13 to both sides of the power unit 14 disposed behind the front fork 13. It is the part to cover.

  Since the cowl 26 is formed continuously, from the front end 62a of the head lamp 62 provided continuously with the cowl 26, the left and right rear sides of the cowl 26, the upper rear side of the wind screen 56, and the head lamp 62 Running wind flows below and below. Since the surface of the front end 62a of the headlamp 62 is a surface on which the traveling wind strikes at a substantially right angle, the flow velocity of the traveling wind is slow. Since the surface is inclined outward and backward, the flow velocity of the traveling wind is fast.

As the above exterior parts, on the outer surfaces of the cowl 26, the pannier case 46, and the wind screen 56, when the motorcycle 10 turns, a traveling wind peeling portion (hereinafter referred to as a peeling layer) is formed on the traveling wind flowing along the outer surface. Are described in detail).
Reference numerals 26a, 26b, and 26c denote three traveling wind peeling portions arranged in the front-rear direction so as to extend vertically on the cowl 26 and project in a strip shape.
The traveling wind peeling part 26 a is formed above the front fender 33 and from the vicinity of the attaching part of the rearview mirror 61 of the upper cowl part 51 to the lower end of the middle cowl part 52 and the lower cowl part 53 through the valley part 58.
The traveling wind peeling portions 26b and 26c are formed from the upper end of the upper cowl portion 51 through the valley portion 58 to the lower end of the middle cowl portion 52 and the lower cowl portion 53 that are disposed below the axle 32 of the front wheel 12 and are exhausted midway. It is interrupted at the wind port 52a. The upper side from the exhaust port 52a of the traveling wind peeling unit 26b is the upper peeling unit U1, the lower side is the lower peeling unit L1, the upper side from the exhaust port 52a of the traveling wind peeling unit 26c is the upper peeling unit U2, and the lower side is the lower peeling unit L2. is there.

Reference numerals 46a and 46b denote two front and rear traveling wind detachments provided so as to extend vertically on the outer surface of the pannier case (side case) 64 disposed on the left and right sides of the rear part of the vehicle body, and more specifically on the side surface. Part.
Reference numerals 56a, 56b, and 56c denote three traveling wind peeling portions arranged in the front-rear direction so as to extend in the left-right direction on the outer surface (upper surface) of the wind screen 56 and project in a strip shape. Since the wind screen 56 is curved upwardly, the traveling wind peeling portions 56 a, 56 b and 56 c extend substantially in the vertical direction at positions close to the left and right edges of the wind screen 56.

FIG. 2 is a front view showing the saddle riding type vehicle.
The cowl 26 is provided with traveling wind peeling portions 26a, 26b, and 26c on the left and right outer surfaces, respectively, and the wind screen 56 is provided with traveling wind peeling portions 56a, 56b, and 56c on the upper surface.
Reference numeral 26e denotes a front opening formed at the front end of the cowl 26, and the front fork 13 projects from the inside of the cowl 26 to the outside.
The valley portion 58 of the cowl 26 is a constricted portion extending in the front-rear direction, and the traveling wind peeling portions 26 a, 26 b, 26 c are also constricted along the outer surface of the valley portion 58.
When viewed from the front, the legs of the driver 22 are disposed inside the cowl 26. As a result, the running wind does not directly hit the legs of the driver 22 and it is possible to prevent the stepping stones from hitting the legs.

FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1 and shows the position of the traveling wind peeling portion in the exterior part (cowl) of the present invention.
The outer surface 26g of the cowl 26 is curved in a convex shape outward in the vehicle width direction in plan view, and the angle θ of the tangent 66 of the outer surface 26g with respect to the straight line 65 extending in the front-rear direction from the front end to the rear of the cowl 26 gradually increases. Assuming that the outer surface of the cowl 26 that is the outermost part in the vehicle width direction of the cowl 26 from the vehicle body centerline 67 that extends in the front-rear direction through the vehicle width direction center of the vehicle is the cowl outermost part 26k, The angle θ is zero.
The front end 62 a of the vehicle body is located on the vehicle body center line 67.

When the distance from the vehicle body center line 67 to the outermost portion 26k is a value L, the range in which the travel wind separation portions 26a, 26b, and 26c are provided is such that the flow velocity of the travel wind flowing along the outer surface 26g of the cowl 26 is Specifically, it is a portion that is larger than the line 67 side, and specifically, is the outer surface 26g within the range of a distance (L / 2) inward in the vehicle width direction from the outermost portion 26k. The outer surface 26g within the range of this distance (L / 2) is the outer rear inclined portion of the cowl 26.
By providing the traveling wind separation portions 26a, 26b, and 26c on the outer surface 26g within the range of this distance (L / 2), the flow velocity of the traveling wind flowing along the outer surface 26g of the cowl 26 is increased, and the traveling wind separation portion. Formation of the peeling layer of the traveling wind by 26a, 26b, and 26c is further promoted.

  With respect to the position of the traveling wind separating portions 26a, 26b, and 26c in the vehicle front-rear direction, the traveling wind separating portion 26a is located on the side of the front wheel 12 and the front fork 13 and the front inclined surface 26m having a large angle θ of the cowl 26. The traveling wind separation part 26b is disposed in the vicinity of the outermost part 26k, the traveling wind separation part 26c is disposed in the vicinity of the outermost part 26k and separated from the traveling wind separation part 26b by a certain distance rearward, The effect of the release layer is further enhanced by further forming the release layer with the traveling wind release portion 26c behind the release layer formed with the travel wind release portion 26b.

FIG. 4 is a perspective view showing the shape of the traveling wind peeling portion, FIG. 4 (a) is a perspective view showing a rectangular protruding portion, and FIG. 4 (b) is a perspective view showing a triangular protruding portion.
In FIG. 4A, the traveling wind peeling portion 26a is a rectangular protruding portion having a rectangular cross section including a front surface 26p, a tip surface 26q, and a rear surface 26r, and is integrally formed on the outer surface 26g of the cowl 26.
The height H1 from the outer surface 26g of the cowl 26 in the traveling wind peeling portion 26a is 5 to 10 mm. A peeling layer is formed in front of the front surface 26p by the front face 26p of the traveling wind peeling portion 26a, and a peeling layer is formed behind the rear face 26r by the rear surface 26r.
Here, only the traveling wind peeling part 26a is shown, but the traveling wind peeling parts 26b and 26c, the traveling wind peeling parts 46a and 46b, and the traveling wind peeling parts 56a, 56b, and 56c shown in FIG. It is.

FIG. 4B shows a traveling wind peeling portion 26s that is another embodiment of the traveling wind peeling portion 26a shown in FIG.
The traveling wind peeling portion 26s is provided on the front side of the vehicle so that the traveling wind hits, and is inclined with respect to the outer surface 26g of the cowl 26, and the inclined surface is raised from the outer surface 26g at a vertical or near vertical angle. A cross-sectional shape including a rear surface 26 u connected to the rear edge of 26 t is a triangular projecting portion that is a triangle, and is integrally formed on the outer surface 26 g of the cowl 26.
The height H2 from the outer surface 26g of the cowl 26 in the traveling wind peeling portion 26s is 8 to 10 mm. The traveling wind flows along the slope 26t of the traveling wind peeling portion 26s to reduce the air resistance, and the rear surface 26u forms a peeling layer behind the rear surface 26u.

Next, the operation of the traveling wind peeling portions 26a and 26s described above will be described.
FIG. 5 is an operation diagram showing the operation of the traveling wind peeling portion of the present invention, FIG. 5 (a) is an operation diagram showing the operation of the rectangular protrusion, and FIG. 5 (b) is an operation diagram showing the operation of the triangular protrusion. It is. The white arrow in the figure indicates the direction in which the traveling wind flows.
In FIG. 5A, when the traveling wind hits the front surface 26p of the traveling wind peeling portion 26a, the traveling wind generates turbulent flow in a space 71 surrounded by the outer surface 26g and the front surface 26p.
In addition, the traveling wind that flows backward along the front end surface 26q of the traveling wind separation portion 26a and passes the rear end of the front end surface 26q generates turbulent flow in the space 72 surrounded by the outer surface 26g and the rear surface 26r.
As a result, the release layer 75 is formed around the space 71 and the space 71 and around the space 72 and the space 72, and the traveling wind flows as a laminar flow outside the release layer 75. Note that the curve denoted by reference numeral 75 a is the edge of the release layer 75.

Thus, since the peeling layer 75 is formed in the front and back, the traveling wind peeling part 26a made into the rectangular protrusion part WHEREIN: When the motorcycle 10 (refer FIG. 1) turns, the traveling wind peeling part 26a The restraining force is weakened, the air resistance during turning of the vehicle is reduced, the vehicle can be easily brought down, and the turning performance can be improved. Furthermore, the steering force for steering the bar handle 31 (see FIG. 1) can be reduced, and the steering performance can be improved.
In FIG. 5 (b), the traveling wind flows backward along the slope 26t of the traveling wind separation part 26s and passes through the rear end of the slope 26t, and then turbulent in the space 73 surrounded by the outer surface 26g and the rear surface 26u. Is generated, and a release layer 77 is formed around the space 73 and the space 73, and the traveling wind flows as a laminar flow outside the release layer 77. Note that the curve denoted by reference numeral 77 a is the edge of the release layer 77.

FIG. 6 is a graph for explaining the effect of the traveling wind peeling portion of the present invention. Wall shear stress acting on the surfaces of the exterior parts (the cowl 26, the pannier case 46, and the wind screen 56 shown in FIG. 1) by the traveling wind and The relationship between air resistance and the height of a driving | running | working wind peeling part is shown. The vertical axis on the left side of the graph represents the wall shear stress, the vertical axis on the right side represents the resistance value of the air resistance, the horizontal axis represents the height (unit: mm) of the traveling wind separation part, the solid line in the graph represents the wall shear stress, and the broken line Represents a resistance value.
In the first embodiment, the traveling wind peeling portion 26a having the rectangular protrusion shown in FIG. 4A is used, and in the second embodiment, the traveling wind peeling portion 26s having the triangular protrusion shown in FIG. 4B is used. The comparative example shows an exterior part that does not have a traveling wind peeling part.

In the first example (rectangular protrusion), the wall surface shear stress gradually decreases in the order of the height H1 of the traveling wind peeling portion of 2 mm, 5 mm, and 10 mm, as compared with the comparative example.
Similarly to the first example, the wall shear stress in the second example (triangular protrusion) is gradually reduced with respect to the comparative example in the order of the height H2 of the traveling wind peeling part of 5 mm and 10 mm. When compared at the same height as the first embodiment, it is slightly higher.
The wall shear stress has a setting range of 0-15 mm (including 0) because the change due to the height becomes small when the height H1 (and H2) of the traveling wind peeling portion is close to 15 mm. Preferably 0 to 10 mm (excluding 0).
Since the resistance value hardly changes until the height of the traveling wind peeling portion is larger than 0 and up to 2 mm, the effect of the running wind peeling portion becomes higher.
Further, if the height of the traveling wind peeling portion exceeds 2 mm, the resistance value increases, the fuel consumption decreases, and the cowl strength increases. Therefore, the height of the traveling wind peeling portion is appropriately selected based on the balance between the fuel consumption and the cowl strength. .
As described above, by reducing the wall shear stress by the traveling wind peeling part provided on the surface of the exterior product, the effect of forming the release layer in the air flow can be enhanced, and the restraining force of the vehicle body by the traveling wind can be increased. Can weaken.

As described with reference to FIGS. 1 to 4, the motorcycle has an outer surface 26 g that covers the outer periphery of the motorcycle 10 as a saddle-ride type vehicle, guides the traveling wind from the front to the rear, and spreads outward in the vehicle width direction as it goes rearward. In the cowl 26, the pannier case 46, and the wind screen 56 as exterior parts of the two-wheeled vehicle 10, the cowl 26, the pannier case 46, and the wind screen 56 are banded in the vertical direction or the horizontal direction outward from the outer surface (26g). Traveling air peeling portions 26a to 26c, 26s, 46a to 46b, which are protruding portions and the rear ends of the protruding portions are separated from the outer surfaces (26g) of the cowl 26, the pannier case 46, and the wind screen 56 by a predetermined distance. 56a to 56c, the outer surface of the cowl 26, the pannier case 46, and the wind screen 56 are provided. By providing traveling wind peeling portions 26a to 26c, 26s, 46a to 46b, and 56a to 56c, which are protruding portions protruding in a strip shape in the vertical direction or the horizontal direction outward from 6g, a peeling layer is formed in the air flow. It is possible to weaken the restraining force of the vehicle body due to the traveling wind.
Therefore, by reducing the air resistance at the time of turning the vehicle, when the vehicle body is tilted in either the left or right direction from straight running, the restraining force that keeps the running wind passing through the left and right sides of the vehicle body upright is reduced. The initial movement at the time of turning can be improved.

Further, in the portions where the cowl 26, the pannier case 46, and the traveling wind separation portions 26a to 26c, 26s, 46a to 46b, and 56a to 56c of the wind screen 56 are not provided, the traveling air is guided from the front to the rear to thereby flow the air. Rectification can be performed, and sufficient straightness of the vehicle can be ensured.
Furthermore, since the conventional vent hole is not opened, the waterproof / dustproof function and the protective function of the cowl 26, the pannier case 46, and the wind screen 56 can be improved. Furthermore, since the traveling wind peeling portions 26a to 26c, 26s, 46a to 46b, and 56a to 56c serve as reinforcing ribs for the cowl 26, the pannier case 46, and the wind screen 56, the cowl 26, the pannier case 46, and the wind screen 56 are used. Strength and rigidity can be increased.

Since the traveling wind peeling portions 26a to 26c, 26s, 46a to 46b, and 56a to 56c are formed in inclined portions that spread outward and rearward of the vehicle body, the traveling wind is peeled off at portions where the traveling wind spreads in the vehicle width direction. By doing so, the air resistance behind the traveling wind peeling portions 26a to 26c, 26s, 46a to 46b, and 56a to 56c can be further reduced, and the initial movement at the time of turning of the vehicle can be improved.
Further, as described above with reference to FIG. 3, the cowl 26 includes the outer surface 26 g extending from the vehicle body center line 67 in the vehicle width direction to the left and right rear, and the traveling wind separation portions 26 a to 26 c are connected to the vehicle body center line 67 and the cowl 26. Since the cowl 26 is disposed within the cowl outermost portion 26k as the outermost end of the side portion in the vehicle width direction by a half of the cowl outermost portion 26k, it is disposed in the vehicle width direction from the cowl outermost portion 26k of the cowl 26. In the range of 1/2 on the inside, the flow velocity of the traveling wind is higher than that on the vehicle body centerline 67 side, and by arranging the traveling wind separation portions 26a to 26c at positions where the flow velocity of the traveling wind becomes higher, The air resistance behind the traveling wind separation portions 26a to 26k can be further reduced, and the initial movement when the vehicle turns can be improved.

Further, as described with reference to FIG. 4B, the traveling wind separation portion 26s has a triangular cross section with the front surface formed on the slope 26t, so that the air resistance is reduced by flowing the traveling wind along the front slope 26t. The peeling effect can be exhibited on the rear surface 26u side of the triangular cross section while reducing.
As described with reference to FIGS. 1 and 2, the exterior parts cover both sides of the power unit 14 disposed behind the front fork 13 from both sides of the front fork 13 that supports the front wheel 12 of the motorcycle 10. Since it is the side cowl 54 and the traveling wind peeling parts 26a to 26c are formed from the upper part to the lower part of the side cowl 54, long running wind peeling parts 26a to 26c can be formed on the upper and lower sides of the vehicle body side surface. The peeling range can be widened while reinforcing the side cowl 54 with the traveling wind peeling portions 26a to 26c.

Further, the exterior component is a wind screen 56 as a windproof plate positioned above the front fork 13 and extending rearward and upward, since the traveling wind peeling portions 56a to 56c extend in the left-right direction on the wind screen 56. By forming the long traveling wind peeling portions 56a to 56c on the left and right, even when the wind screen 56 is enlarged, the traveling wind peeling portions 56a to 56c can reinforce the wind screen 56 and form a traveling wind peeling layer. It is possible to improve the initial movement when the vehicle turns.
Further, the cowl 26 includes a trough 58 extending in the longitudinal direction of the vehicle body, and the traveling wind peeling portions 26a to 26c are disposed in the valley 58, so that the traveling wind separation speeds of the traveling wind peeling portions 26a to 26c are reduced. By disposing in the higher valley portion 58, it is possible to enhance the separation effect of the traveling wind and further improve the initial movement when the vehicle turns.

Further, a radiator 34 is disposed in side cowls 54 disposed on the left and right of the motorcycle 10, and is formed on a side portion of the side cowl 54 in order to discharge the exhaust air from the radiator 34 to the outside of the side cowl 54. Since the traveling wind separation part 26a is disposed in front of the exhaust port 52a, the effect of the separation can be further enhanced by separating the portion where the traveling air that is not disturbed by the exhaust air of the radiator 34 is rectified. .
In addition, since the traveling wind separation unit 26a is disposed above the front wheel 12 included in the motorcycle 10, by separating the rectifying portion of the traveling wind in which the flow of the traveling wind is not disturbed by the rotation of the front wheel 12, The effect of peeling can be further enhanced.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.
For example, in the above embodiment, in FIGS. 4 (a) and 4 (b), the rear surfaces 26r and 26u of the traveling wind peeling portions 26a and 26s are raised from the outer surface 26g at a vertical or nearly vertical angle. Not limited to this, the rear surfaces 26r and 26u may be inclined at a predetermined angle with respect to the outer surface 26g forward or backward of the vehicle body. According to this configuration, it is possible to adjust the degree of turbulence generated by the traveling wind separating portions 26a and 26s, and to change the restraining force of the vehicle body due to the traveling wind.
In addition, although the rear surfaces 26r and 26u are flat surfaces, the present invention is not limited thereto, and may be curved surfaces.
Furthermore, although the cross-sectional shapes of the traveling wind peeling portions 26a and 26s are rectangular and triangular, respectively, the shape is not limited to this, and may be a mountain shape, a semicircular shape, and a kamaboko shape.
Further, the present invention is not limited to the application to a motorcycle, but can be applied to a straddle-type vehicle including other than a motorcycle. The straddle-type vehicle includes all vehicles that ride on the vehicle body, and includes not only motorcycles (including bicycles with motors) but also three-wheeled vehicles and four-wheeled vehicles classified as ATVs (rough terrain vehicles). It is a vehicle including.

10 Motorcycle (saddle-ride type vehicle)
12 front wheel 13 front fork 14 power unit 26 cowl (exterior parts)
26a-26c, 26s, 46a-46b, 56a-56c Traveling wind peeling part 26g Outer surface 26k Cowl outermost part (side outermost end)
26m front slope (slope)
26t slope 34 radiator 46 pannier case (exterior part)
52a Air exhaust port 54 Side cowl 56 Wind screen (exterior parts, windbreak plate)
58 Tanibe 67 Car body center line (car body center)

Claims (9)

In the exterior component of the saddle riding type vehicle, which has an outer surface (26g) that covers the outer periphery of the saddle riding type vehicle (10) and guides the traveling wind from the front to the rear and spreads outward in the vehicle width direction as it goes rearward.
The exterior component (26, 46, 56) is a projecting portion projecting outwardly from the outer surface (26g) in a vertical or horizontal direction in a strip shape, and the rear end of the projecting portion is the exterior component (26, 46). , 56) is provided with traveling wind peeling portions (26a to 26c, 26s, 46a to 46b, 56a to 56c) which are separated from the outer surface (26g) of the saddle riding type vehicle.   The said running wind peeling part (26a-26c, 26s, 46a-46b, 56a-56c) is formed in the outer back inclination part which spreads outward and the back of a vehicle body, The Claim 1 characterized by the above-mentioned. Exterior parts for saddle riding type vehicles.   The exterior part (26) includes an outer surface (26g) extending from the vehicle body center (67) in the vehicle width direction to the left and right rear, and the traveling wind peeling portions (26a to 26c) are connected to the vehicle body center (67) and the exterior. It is arrange | positioned in the range inside 1/2 from the said side part outermost end (26k) in the vehicle width direction between the side part outermost ends (26k) of components (26), The exterior part of the saddle riding type vehicle according to 1 or 2.   The exterior component of the saddle riding type vehicle according to any one of claims 1 to 3, wherein the traveling wind peeling portion (26s) has a triangular cross section with a front surface formed on a slope (26t). The exterior parts (26, 46, 56) are arranged behind the front fork (13) from both sides of the front fork (13) that supports the front wheel (12) of the saddle riding type vehicle (10). A side cowl (54) covering both sides of the power unit (14);
The saddle riding type according to any one of claims 1 to 4, wherein, in the side cowl (54), the traveling wind separation part (26a to 26c) is formed from an upper part to a lower part. Vehicle exterior parts.   The exterior component (26, 46, 56) includes a windbreak plate (56) that is located above the front fork (13) and extends rearward and upward. In the windbreak plate (56), the traveling wind peeling portion is provided. The exterior part of the saddle riding type vehicle according to any one of claims 1 to 5, wherein (56a to 56c) extend in a left-right direction.   The said exterior component (26) is provided with the trough part (58) extended in a vehicle body front-back direction, The said traveling wind peeling part (26a-26c) is arrange | positioned at this trough part (58), It is characterized by the above-mentioned. The exterior part of the saddle riding type vehicle according to 5.   A radiator (34) is disposed in the side cowl (54), and is formed on a side portion of the side cowl (54) in order to discharge the exhaust air from the radiator (34) to the outside of the side cowl (54). The exterior component of the saddle riding type vehicle according to claim 5 or 7, wherein the traveling wind peeling portion (26a) is disposed in front of the exhausted air outlet (52a).   The said running wind peeling part (26a) is arrange | positioned upwards rather than the front wheel (12) with which the said saddle riding type vehicle (10) is provided, The one of the Claims 1 thru | or 5, 7, 8 characterized by the above-mentioned. The exterior component of the saddle riding type vehicle according to the item.

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