JP6166788B2 - Motorcycle - Google Patents

Description

  The present invention relates to a saddle riding type vehicle having a front cowl.

  In the motorcycle described in Patent Document 1, the front cowl is provided so as to cover the vehicle body from the front to the side of the upper end of the front fork.

JP 61-132481 A

  In some cases, further high-speed running stability is desired for the motorcycle disclosed in Patent Document 1.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a straddle-type vehicle that can improve high-speed running stability.

  In order to solve the above-described problem, a saddle-ride type vehicle according to the present invention includes a front cowl that has an inclined surface that is inclined so as to become higher toward the rear, and covers the vehicle body above the front fender. Both ends of the inclined surface in the left-right direction are disposed outside the front fender.

  In this configuration, since the area of the inclined surface can be increased in the vehicle width direction, a downward force (hereinafter referred to as “down force”) generated when the traveling wind hits the inclined surface can be increased.

  According to the present invention, the downforce acting on the front cowl can be increased, so that high-speed running stability can be improved.

It is a top view which shows the structure of the saddle riding type vehicle which concerns on embodiment. 1 is a front view illustrating a configuration of a saddle riding type vehicle according to an embodiment. It is a front view which shows the structure of the left half of a front cowl. It is a fragmentary perspective view which shows the structure of the inclined surface and level | step-difference part which concern on a modification.

  Hereinafter, preferred embodiments of a saddle riding type vehicle according to the present invention will be described with reference to the drawings. Each direction used in the following description is based on the vehicle body, and each direction based on the vehicle body is the same as the direction viewed from the driver on the saddle riding type vehicle.

  First, in the saddle riding type vehicle 10 of the present embodiment, the circumstances that require down force to act on the vehicle body will be described. In the saddle-ride type vehicle 10, the side cowls 16a and 16b move outward in the vehicle width direction and incline as they advance from the front end to the rear end, thereby deflecting the traveling wind toward the driver's legs. The rear ends of the side cowls 16a and 16b are located in the vicinity of the radiator core 22a. The traveling wind that has passed through the radiator core 22a flows deviating backward and downward in the vehicle width direction without interfering with the side cowls 16a, 16b. The side cowls 16a and 16b have a wind guide function for guiding the running wind to the radiator core 22a. The inner surfaces of the side cowls 16a and 16b in the vehicle width direction are disposed so as to extend forward from the radiator core 22a. The upper portion of the space between the left side cowl 16a and the right side cowl 16b is closed by the headlamp 55, the front cowl 14, and the like. Further, an opening is formed between the pair of left and right side cowls 16a and 16b so that traveling wind can be introduced, and the radiator core 22a is disposed between the side cowls 16a and 16b and behind the front end portions of the side cowls 16a and 16b. Is done. Thus, the traveling wind guided between the side cowls 16a and 16b and rearward from the front ends of the side cowls 16a and 16b is prevented from escaping to the outside in the vehicle width direction and is guided to the radiator core 22a.

  When a large amount of traveling wind is introduced into the space between the side cowls 16a and 16b due to high speed traveling, a force in the direction of lifting the front wheel 26 upward is generated in the vehicle 10 by the traveling wind guided between the side cowls 16a and 16b. The ground load on the front wheel 26 tends to decrease. In the present embodiment, since the front surface of the radiator core 22a and the front surface of the cylinder of the engine 20 are inclined downward, the force in the direction of lifting the front wheel 26 is likely to work. In the present embodiment, a front cowl 14 to be described later is employed, so that a downforce is generated by a traveling wind colliding with a surface facing the front cowl 14, and a force for pressing the front cowl 14 downward is generated. . As a result, when the vehicle is traveling at high speed, it is possible to suppress the decrease in the ground load of the front wheel 26 and to easily transmit the driving force and the braking force from the front wheel 26 to the road surface. Further, regardless of the traveling wind guided to the space between the side cowls 16a and 16b, the downforce is generated to increase the ground load of the front wheel 26, thereby increasing the driving force and braking force applied from the front wheel 26 to the road surface. It is possible to improve the running performance.

  Hereinafter, the configuration of the saddle riding type vehicle 10 will be described in detail. FIG. 1 is a plan view showing a configuration of a saddle riding type vehicle 10 according to the embodiment. FIG. 2 is a front view showing the configuration of the saddle riding type vehicle 10. FIG. 3 is a front view showing the configuration of the left half of the front cowl 14. The saddle riding type vehicle 10 of the present embodiment is a motorcycle, and receives traveling wind from the front during traveling. As shown in FIG. 1, the saddle riding type vehicle 10 includes a vehicle body 12, a front cowl 14 that covers a front portion of the vehicle body 12 from above, and a pair of left and right side cowls 16a and 16b that covers the vehicle body 12 from the side. ing.

  As shown in FIG. 1, the vehicle body 12 includes a vehicle body frame 18, an engine 20 mounted on the vehicle body frame 18, and a cooling device 22 that cools the engine 20. The cooling device 22 has a radiator core 22a for exchanging heat between the coolant that has taken heat from the engine 20 and the traveling wind. The radiator core 22a is disposed in front of the engine 20 so that the surface receiving the traveling wind faces forward.

  As shown in FIG. 2, the vehicle body 12 includes a pair of left and right front forks 24a and 24b provided at the front portion of the body frame 18 (FIG. 1), a front wheel 26 supported by the front forks 24a and 24b, A swing arm (not shown) provided at the rear portion of the vehicle body frame 18 (FIG. 1), a rear wheel 28 supported by the swing arm, and a front fender 30 are provided. The front fender 30 is disposed between the pair of left and right front forks 24a and 24b so as to cover the front wheel 26 from above. The front fender 30 is provided with a pair of left and right support portions 32a and 32b, and these support portions 32a and 32b are attached to the front forks 24a and 24b, respectively.

  Further, as shown in FIG. 1, the vehicle body 12 includes a steering handle 34, a fuel tank 36 provided behind the steering handle 34, and a seat 38 provided behind the fuel tank 36. The steering handle 34 is provided with a pair of left and right grips 40a and 40b. The driver holds the grips 40 a and 40 b across the seat 38 and operates the steering handle 34.

  As shown in FIG. 2, the front cowl 14 is disposed so as to cover the vehicle body 12 above the front fender 30 and in front of the upper ends of the front forks 24a and 24b. The front cowl 14 includes a pair of left and right shield support portions 44a and 44b that support the windshield 42, and a pair of left and right first inclined portions 46a and 46b formed outside the shield support portions 44a and 44b in the left and right direction, Between the pair of left and right second inclined portions 48a and 48b formed outside the first inclined portions 46a and 46b in the left and right direction and the pair of left and right first inclined portions 46a and 46b, in front of the windshield 42 And a third inclined portion 50 formed on the outer periphery. The left side mirror 52a is attached to the left first inclined portion 46a, and the right side mirror 52b is attached to the right first inclined portion 46b. At the front end portion 14b of the front cowl 14, at least one (for example, a pair of left and right) openings 54a and 54b are formed to open forward.

  As shown in FIG. 2, each of the first inclined portions 46 a and 46 b, the second inclined portions 48 a and 48 b, and the third inclined portion 50 of the front cowl 14 becomes higher as it goes rearward along the front-rear direction. It is a part which comprises the inclined surface 70 which inclines to. The inclined surface 70 is formed at an inclination angle smaller than the inclination angle of the windshield 42 with respect to the horizontal plane. The inclined surface 70 is preferably formed flat with respect to the vehicle width direction in order to prevent the traveling wind flowing along the inclined surface 70 from being guided outward in the vehicle width direction. Specifically, the inclined surface 70 is preferably formed so that the amount of inclination that inclines in the front-rear direction decreases from the inner side in the vehicle width direction to the outer side in the vehicle width direction. For example, the inclined surface 70 is formed such that an inclination amount (angle) per unit distance that is inclined upward as it goes rearward is larger than an inclination amount (angle) per unit distance that is inclined downward as it goes outward in the vehicle width direction. Is done. Thereby, it can suppress that the driving | running | working wind which flows along the inclined surface 70 deviates outward in a vehicle width direction.

  The pair of left and right shield support portions 44a and 44b project upward from the inclined surface 70 and extend substantially in the front-rear direction. By the laterally outer side surfaces of the shield support portions 44a and 44b, the traveling wind can be guided backward while preventing the traveling wind from deviating inward in the vehicle width direction. A boundary line G between the windshield 42 and the front cowl 14 is formed in a V shape or a U shape opened rearward in a plan view. A front end edge of the windshield 42 is connected to a rear end edge of the third inclined portion 50, and left and right side edges of the windshield 42 are connected to a pair of left and right shield support portions 44a and 44b. The cross section perpendicular to the front-rear direction of the windshield 42 is curved so that the central portion in the left-right direction protrudes upward with respect to both end portions in the left-right direction, or becomes lower from the center portion in the left-right direction toward both ends in the left-right direction. It is formed into a shape. The inclined surfaces 70 are also formed on both sides of the windshield 42 in the vehicle width direction, whereby the vertical dimension of the inclined surface 70 can be increased to increase the area thereof, and the generated downforce can be increased. .

  As shown in FIGS. 1 and 2, the right half of the front cowl 14 is formed symmetrically with the left half. Below, the structure of the front cowl 14 is demonstrated in detail paying attention to the left half. As shown in FIG. 3, a smooth first inclined surface 47 is formed on the upper surface of the first inclined portion 46 a of the front cowl 14, which is inclined so as to increase toward the rear. A smooth second inclined surface 49 is formed on the upper surface of the second inclined portion 48a. The second inclined surface 49 is inclined so as to become lower toward the outer side in the left-right direction and to become higher toward the rear. On the upper surface of the third inclined portion 50, a smooth third inclined surface 51 that is inclined so as to become higher toward the rear is formed. That is, the left half inclined surface 70 a of the front cowl 14 is constituted by the first inclined surface 47, the second inclined surface 49, and the left half of the third inclined surface 51. In the present embodiment, the second inclined surfaces 49 are arranged on both the left and right sides of the headlamp 55 when viewed from the front. Since the rear edge angle of the front edge portion of the second inclined surface 49 with respect to the horizontal plane becomes smaller from the inner side to the outer side in the vehicle width direction, the running resistance can be reduced.

  As shown in FIG. 3, a first protrusion 56 extending substantially in the front-rear direction is formed at the boundary between the first inclined surface 47 and the second inclined surface 49. Further, a second protrusion 58 extending substantially in the front-rear direction is formed at the boundary between the first inclined surface 47 and the third inclined surface 51 so as to be continuous with the shield support portion 44a in the front-rear direction. The 1st protrusion 56 and the 2nd protrusion 58 are arrange | positioned at intervals in the left-right direction. The first protrusion 56 is a linear protrusion having a semicircular cross section, and is increased by the first protrusion 56 from the inner side in the left-right direction of the vehicle body 12 (FIG. 2) to the outer side, and An inner stepped portion 56a extending in the front-rear direction and an outer stepped portion 56b that increases from the outer side in the left-right direction toward the inner side and extends in the front-rear direction are configured. The second protrusion 58 is a linear protrusion having a triangular cross section. The second protrusion 58 increases from the inner side in the left-right direction of the vehicle body 12 (FIG. 2) toward the outer side, and is An inner stepped portion 58a extending in the direction and an outer stepped portion 58b extending from the outer side in the left-right direction toward the inner side and extending in the front-rear direction are configured. These stepped portions 56a, 56b, 58a, 58b can guide the traveling wind backward. As shown in FIG. 2, the first protrusion 56 located on the outer side in the left-right direction among the first protrusion 56 and the second protrusion 58 is more lateral than the pair of front forks 24 a and 24 b from the front end to the rear end. It is arranged outside. Thereby, the inclined surface 70 can be made wide and the downward force by driving | running | working wind can be raised. A plurality of protrusions 56 and 58 are arranged at intervals in the left-right direction, and more preferably, two or more sets are arranged on both sides in the vehicle width direction with respect to the center in the vehicle width direction, so that the traveling wind flows in the left-right direction from the inclined surface 70 Deviation from both sides is suppressed, and traveling wind can flow along the inclined surface 70. The number of ridges formed on one side of the front cowl 14 in the vehicle width direction may be one or three or more, and these ridges may be omitted. Further, the cross-sectional shape of the protrusion is not limited to a semicircular shape or a triangular shape, and may be a square shape or an inverted L shape.

  As shown in FIG. 3, the side mirror 52a has a base 60a, a mirror stay 60b, a mirror housing 60c, and a mirror (not shown) housed in the mirror housing 60c. A seat portion 62 for placing the base portion 60a of the side mirror 52a is formed on a portion of the upper surface of the first inclined portion 46a located behind the front end portion 14b of the front cowl 14. Although not shown, the seat portion 62 has a hole, and the base portion 60a is attached to an attachment portion disposed on the back side of the front cowl 14 by a fitting (bolt or the like) inserted through the hole. It has been.

  As shown in FIG. 3, an opening 54 a is formed below the first inclined portion 46 a and the second inclined portion 48 a in the front end portion 14 b of the front cowl 14. In the present embodiment, a ram duct 64 is disposed below the left first inclined portion 46a, and the ram duct 64 is connected to the left opening 54a. The air taken into the ram duct 64 from the opening 54a is supplied to the engine 20 (FIG. 1) through an air cleaner (not shown). The ram duct 64 may be connected to the right opening 54b (FIG. 2) or may be disposed below the right first inclined portion 46b (FIG. 2).

  As shown in FIGS. 1 and 2, the right half of the front cowl 14 is formed symmetrically with respect to the left half, so that a pair of left and right inclined surfaces 70a (FIG. 3) is formed on the upper surface 14a of the front cowl 14. Only one side is shown in FIG. As shown in FIG. 1, the inclined surface 70 is formed in a tapered shape (for example, V-shaped or U-shaped) such that the left-right dimension decreases toward the front and the left-right dimension increases toward the rear. Has been. The inclined surface 70 is formed outside the boundary line G between the front cowl 14 and the windshield 42 on both sides in the left-right direction.

  Although not shown, the cross section perpendicular to the front-rear direction of the inclined surface 70 has a shape that is curved so as to become lower from the center in the left-right direction toward both ends in the left-right direction, or from the center in the left-right direction to both ends in the left-right direction. It is formed in a straight line inclined so as to become lower as it goes. When the cross section of the inclined surface 70 is formed in a curved shape, the curvature of the inclined surface 70 is set to be smaller than the curvature of the windshield 42. On the other hand, when the cross section of the inclined surface 70 is formed into an inclined linear shape, the inclination angle of the inclined surface 70 with respect to the horizontal plane is set smaller than the inclination angle of the windshield 42.

  As shown in FIGS. 2 and 3, the left and right outer edges 72a and 72b of the inclined surface 70, that is, the left and right outer edges 72a of the pair of left and right second inclined surfaces 49 (only one of them is shown in FIG. 3). 72b is formed to extend rearward from the left and right outer portions of the openings 54a and 54b, respectively, from the front fender 30 and the pair of left and right front forks 24a and 24b from the front end to the rear end. Is also arranged outside in the left-right direction. One end 74a and the other end 74b of the inclined surface 70 in the left-right direction are located at the rear ends of the one side edge 72a and the other side edge 72b, respectively. Further, both the left and right inner edges 73a and 73b of the inclined surface 70, that is, the left and right inner edges 73a and 73b of the pair of left and right first inclined surfaces 47 (only one of them is shown in FIG. 3) are arranged from the front end to the rear end. It is arranged on the outer side in the left-right direction than the front fender 30. A vehicle body side surface 53 that extends in the front-rear direction along a substantially vertical line is formed on the front cowl 14 on the outer side in the vehicle width direction of the inclined surface 70. In the present embodiment, the inclined surface 70 and the vehicle body side surface 53 of the front cowl 14 are connected to each other at a predetermined angle, and the vehicle body side surface 53 is provided by bending from the inclined surface 70. As compared with the case where the are connected smoothly, the dimension in the vehicle width direction of the inclined surface 70 can be increased.

  As shown in FIG. 2, the interval between both ends 74a, 74b of the inclined surface 70 in the left-right direction is W0, the left-right dimension of the front fender 30 is W1, and the left-right dimension of the pair of left and right front forks 24a, 24b is W2. Assuming that the horizontal dimension of the radiator core 22a is W3, the relationship of W0> W3> W2> W1 is established. Further, if the horizontal dimension of the windshield 42 is W4, the horizontal dimension between the outermost portions of the pair of left and right side mirrors 52a and 52b is W5, and the horizontal dimension between the pair of left and right grips 40a and 40b is W6, The relationship of W0> W6> W5> W4 is established. In this embodiment, the left-right dimension W4 of the windshield 42 is larger than the left-right dimension W3 of the radiator core 22a. Therefore, the relationship of W0> W6> W5> W4> W3> W2> W1 is established. That is, in this embodiment, both ends 74a and 74b of the inclined surface 70 in the left-right direction are the bases of the front fender 30, the front forks 24a and 24b, the radiator core 22a, the windshield 42, the side mirrors 52a and 52b, and the grips 40a and 40b. It arrange | positions in the left-right direction outer side from each of the edge part. The 2nd inclined surface 49 (refer FIG. 3) is arrange | positioned rather than the radiator core 22a at the vehicle width direction outer side. Furthermore, as shown in FIG. 1, when the horizontal dimension of the portion of the inclined surface 70 located on the front side of the windshield 42 is W7, the relationship of W7> W4 is established.

  When the saddle riding type vehicle 10 shown in FIG. 1 is traveling, traveling wind strikes the inclined surface 70 of the front cowl 14, and this traveling wind flows backward on the upper surface 14 a of the front cowl 14. As shown in FIG. 2, the maximum dimension of the inclined surface 70 in the left-right direction coincides with the interval W0 between both ends 74a, 74b of the inclined surface 70, and is larger than at least one of the left-right dimensions W1 to W6. Since it is large (in this embodiment, larger than any of the left-right dimensions W1 to W6), the area of the inclined surface 70 can be secured widely. Thereby, a big down force can be generated in the inclined surface 70, and high-speed driving | running | working stability can be improved.

  As shown in FIG. 2, the first protrusions 56 constituting the step portions 56a and 56b are disposed on the outer side in the left-right direction from the front end to the rear end, so that the inclined surface 70 The horizontal dimension can be increased, and a large downforce can be generated on the inclined surface 70.

  As shown in FIG. 1, the inclined surface 70 is formed outside the boundary line G between the front cowl 14 and the windshield 42 on both sides in the left-right direction. Further, the left-right dimension W7 of the portion of the inclined surface 70 located on the front side of the windshield 42 is set to be larger than the left-right dimension W4 of the windshield 42. Accordingly, it is possible to generate a large downforce on the inclined surface 70 while preventing the wind from traveling by the windshield 42.

  As shown in FIG. 1, the inclined surface 70 is formed in a tapered shape such that the lateral dimension decreases toward the front and the lateral dimension increases toward the rear. A large downforce can be generated.

  As shown in FIG. 3, since the ram duct 64 is disposed below the first inclined portion 46a constituting the inclined surface 70, the space below the inclined surface 70 can be used effectively.

  In the above-described embodiment, the step portions 56a and 58a that are increased from the inner side in the left-right direction to the outer side are formed by the protrusions 56 and 58. However, such a step portion has a difference in height on the inclined surface 70. You may comprise by. For example, as shown in FIG. 4, the outer portion 80 of the inclined surface 70 in the left-right direction is formed higher than the inner portion 82, and a stepped portion 84 that is higher from the inside toward the outside is formed at the boundary between these portions. May be. The front cowl 14 may not be equipped with the mirror stays 60a and 60b. The front cowl 14 may not have openings 54a and 54b, and may have openings on only one of the left and right sides.

  The straddle-type vehicle according to the present invention can be applied to a straddle-type three-wheel vehicle, a four-wheel vehicle, and the like in addition to the motorcycle shown in the above-described embodiment.

10 Saddle type vehicle (motorcycle)
12 Body 14 Front cowl 30 Front fender 70 Inclined surface 74a One end 74b The other end

Claims (10)

A headlamp,
A front cowl that has an inclined surface that inclines so as to become rearward and covers the vehicle body above the front fender;
A windshield attached to the front cowl ,
Both ends of the inclined surface in the left-right direction of the vehicle body are arranged outside the front fender,
The inclined surface is provided on the upper side of the headlamp, the saw including a region outside the lateral direction of the head lamp is formed on the outer side in a lateral direction with respect to the boundary line between the windshield and the front cowl ,
The front cowl protrudes upward from the inclined surface and extends in the front-rear direction, and has a shield support portion that supports the windshield,
The inclined surface has a step portion extending in the front-rear direction, and a step portion extending from the inner side in the left-right direction toward the outer side as it goes rearward is formed.
The motorcycle has a first inclined portion sandwiched between the shield support portion and the stepped portion . 2. The motorcycle according to claim 1 , wherein the stepped portion is disposed outside the pair of front forks in the left-right direction from the front end to the rear end. The step portion is constituted by a ridge extending in the front-rear direction,
The motorcycle according to claim 1 or 2 , wherein the plurality of step portions are arranged at intervals in the left-right direction of the vehicle body. The motorcycle according to any one of claims 1 to 3 , wherein a left-right dimension of a portion of the inclined surface located on a front side of the windshield is larger than a left-right dimension of the windshield. The front cowl is arranged to cover the vehicle body in front of the upper end of the front fork,
The motorcycle according to any one of claims 1 to 4 , wherein both ends of the inclined surface in the left-right direction of the vehicle body are disposed outside the front fork. A cooling device having a radiator core;
The motorcycle according to any one of claims 1 to 5 , wherein both ends of the inclined surface in the left-right direction of the vehicle body are disposed outside the radiator core. The front cowl has a pair of left and right side mirror bases attached thereto,
Both ends of the inclined surface in the left-right direction of the vehicle body are disposed outside the bases of the pair of left and right side mirrors ,
The motorcycle according to any one of claims 1 to 6 , wherein the base portion of the side mirror is attached to the first inclined portion . The motorcycle according to any one of claims 1 to 7 , wherein the stepped portion is disposed on the outer side in the left-right direction with respect to the headlamp. The motorcycle according to claim 8 , wherein the stepped portion includes a pair of stepped portions disposed on the left side of the headlamp and a pair of stepped portions disposed on the right side of the headlamp. It has a steering handle with a pair of left and right grips,
The motorcycle according to any one of claims 1 to 9 , wherein the inclined surface is disposed above the grip in a front view.

Images