CN221188880U - Vehicle with a vehicle body having a vehicle body support - Google Patents

Abstract

A vehicle (1) is provided with a first exterior member (50) that receives traveling wind and a second exterior member (60) that is attached to the first exterior member (50). The second exterior member (60) has a stepped portion (70) upstream of at least a part of the joint portion (65) joined to the first exterior member (50) in the traveling wind flow path.

Description

Vehicle with a vehicle body having a vehicle body support

The present application is based on japanese patent application No. 2022-192839, which was filed on month 12 of 2022 and 01, and enjoys priority of the application. The present application is incorporated by reference into this application in its entirety.

Technical Field

The present utility model relates to a vehicle.

Background

For example, japanese unexamined patent publication No. WO2015/071936 discloses a saddle-ride type vehicle having a cowling structure provided so as to cover a front portion of a vehicle body. The cowling structure is provided with an aerodynamic device comprising a front cowling and a side cowling. The aerodynamic device includes a lift force generating unit that generates a negative lift force, which is a downward lift force, using traveling wind.

Disclosure of utility model

However, turbulence may be generated at the junction of the fairing and the lift generating portion, and aerodynamic performance may be degraded. Therefore, it is desirable to suppress generation of turbulence at the joint portion of the exterior member.

The present application has been made to solve the above problems, and an object of the present application is to suppress turbulence from being generated in a joint portion of an exterior member.

As a solution to the above problem, the present utility model has the following configuration.

(1) The vehicle according to the aspect of the present utility model includes a first exterior member 50 that receives traveling wind and a second exterior member 60 attached to the first exterior member 50, wherein the second exterior member 60 includes a stepped portion 70 upstream of at least a part of a traveling wind flow path of a joint portion 65 that is joined to the first exterior member 50.

(2) In the vehicle described in (1), the step portion 70 may include an inclined portion 72 inclined with respect to the vehicle longitudinal direction, and the inclined portion 72 may be inclined so that a step becomes lower as going downstream in the traveling wind flow path.

(3) In the vehicle described in (2), the step portion 70 may include a front edge portion 73 extending from a front end of the inclined portion 72 toward the joint portion 65 in the vehicle width direction.

(4) In the vehicle according to the above (2) or (3), the inclined portion 72 may be provided substantially parallel to the joint portion 65 extending in a straight line.

(5) The vehicle according to any one of (1) to (4) above, wherein the step portion 70 may be a protruding portion protruding from the one surface 71 of the second exterior member 60.

(6) In the vehicle according to any one of the above (1) to (5), the second exterior member 60 may be a winglet extending outward in the vehicle width direction from the first exterior member 50.

(7) In the vehicle according to any one of the above (1) to (6), the second exterior member 60 may be provided with an outer member 80 provided with the stepped portion 70 and an inner member 90 attached to the outer member 80, the outer member 80 may be provided with a front side bent portion 81 provided upstream of the stepped portion 70 in the traveling wind flow path and bent toward the front of the vehicle and a rear side bent portion 82 provided downstream of the stepped portion 70 in the traveling wind flow path and bent toward the rear of the vehicle, and the inner member 90 may be provided with a front side bent portion 85 engaged with the front side bent portion 81 and a rear side bent portion 91 engaged with the rear side bent portion 82 and bent toward the bottom of the vehicle in a range of the rear side bent portion 87.

(8) In the vehicle described in (7), the lower end edge of the front curved portion 81 may be provided below the front lower end edge of the inner member 90 along the front abutting portion 85.

(9) In the vehicle described in (7) or (8), the lower end edge of the rear curved portion 82 may be provided above the vehicle along the rear lower end edge of the inner member 90 of the rear mating portion 87.

(10) The vehicle according to any one of the above (1) to (9), a gap 66 may be formed in the joint 65.

According to the vehicle described in (1), in the vehicle including the first exterior member receiving the traveling wind and the second exterior member attached to the first exterior member, the second exterior member has the step portion upstream of at least a part of the traveling wind flow path of the joint portion joined to the first exterior member, thereby achieving the following effects.

Since the traveling wind can be peeled off by the step portion, the traveling wind can be prevented from flowing into the joint portion between the first exterior member and the second exterior member. Therefore, turbulence can be suppressed in the joint portion of the exterior member.

According to the vehicle described in the above (2), the step portion includes the inclined portion inclined with respect to the vehicle longitudinal direction, and the inclined portion is inclined so that the step difference becomes lower as going downstream in the traveling wind flow path, thereby achieving the following effects.

Compared to the case where the inclined portion is inclined so that the step increases as it goes downstream of the traveling wind flow path, the air resistance can be kept to a minimum, and the traveling wind can be peeled off more effectively. Therefore, the generation of turbulence at the joint portion of the exterior member can be more effectively suppressed while minimizing the air resistance.

According to the vehicle described in the above (3), the step portion is provided from the front end of the inclined portion toward the front edge portion of the joint portion in the vehicle width direction, thereby achieving the following effects.

In addition to the inclined portion of the step portion, the traveling wind can be peeled off from the front edge portion, and thus inflow of the traveling wind into the joint portion between the first exterior member and the second exterior member can be more effectively suppressed. This makes it easy to form an air pool in the region along the joint. Therefore, turbulence can be more effectively suppressed from being generated in the joint portion of the exterior member.

According to the vehicle described in (4), the inclined portion is provided substantially in parallel with the joint portion extending in a straight line, and the following effects are achieved.

Compared to the case where the inclined portion is provided so as to intersect the joint portion extending in a straight line, the air pool can be formed more stably in the region along the joint portion. Therefore, turbulence can be more effectively suppressed from being generated in the joint portion of the exterior member.

According to the vehicle described in the above (5), the step portion is a convex portion protruding from one surface of the second exterior member, whereby the following effects are exhibited.

Since the traveling wind can be peeled off by the configuration in which the stepped portion is a convex portion, inflow of the traveling wind into the joint portion between the first exterior member and the second exterior member can be suppressed. Therefore, turbulence can be suppressed in the joint portion of the exterior member.

According to the vehicle described in the above (6), the second exterior member is a winglet extending outward in the vehicle width direction from the first exterior member, and thus the following effects are exhibited.

The traveling wind can be peeled off by the stepped portion provided in the winglet, and thus inflow of the traveling wind into the junction between the first exterior member and the winglet can be suppressed. Therefore, turbulence can be suppressed from being generated at the joint portion of the winglet.

According to the vehicle described in the above (7), the second exterior member includes the outer member provided with the stepped portion and the inner member attached to the outer member, the outer member includes the front side bent portion provided at a position upstream of the stepped portion with respect to the traveling wind flow path and bent toward the front of the vehicle, and the rear side bent portion provided at a position downstream of the stepped portion with respect to the traveling wind flow path and bent toward the rear of the vehicle, and the inner member includes the lower side bent portion bent toward the lower side of the vehicle over the range of the front side bent portion and the rear side bent portion.

The traveling wind can be rectified by the portions (the front side bent portion, the rear side bent portion, and the lower side bent portion) located on the front-rear lower side than the stepped portion.

According to the vehicle described in (8), the lower end edge of the front curved portion is provided below the vehicle along the front lower end edge of the inner member of the front mating portion, thereby achieving the following effects.

Compared to a case where the lower end edge of the front curved portion is provided above the vehicle along the front lower end edge of the inner member of the front mating portion, inflow of the traveling wind into the front mating portion can be suppressed. Therefore, the traveling wind can be rectified more effectively.

According to the vehicle described in (9), the lower end edge of the rear curved portion is provided above the vehicle than the rear lower end edge of the inner member along the rear mating portion, thereby achieving the following effects.

Compared to a case where the lower end edge of the rear curved portion is provided at a position below the vehicle along the rear lower end edge of the inner member of the rear mating portion, inflow of the traveling wind to the rear mating portion can be suppressed. Therefore, the traveling wind can be rectified more effectively.

According to the vehicle described in (10), the following effects are achieved by forming a gap in the joint.

The gap between the joint portions can absorb dimensional deviations of the first exterior member and the second exterior member.

Drawings

Fig. 1 is a left side view of a motorcycle according to an embodiment.

Fig. 2 is a front view of the motorcycle according to the embodiment.

Fig. 3 is a plan view of a vehicle front portion of the motorcycle according to the embodiment.

Fig. 4 is a perspective view of the left side portion of the cowling structure according to the embodiment.

Fig. 5 is an explanatory view of the peeling of the traveling wind by the step portion according to the embodiment.

Fig. 6 is an explanatory view of the peeling of the traveling wind by the step portion, which is observed from a point of view different from fig. 5.

Fig. 7 is a view containing a section VII-VII of fig. 4.

Fig. 8 is a front view of a section VIII-VIII comprising fig. 3.

Fig. 9 is a right side view of a section IX-IX containing fig. 3.

Fig. 10 is a view including the X-X section of fig. 4.

Fig. 11 is an explanatory diagram of CFD analysis according to the embodiment. Fig. 11 (a) is a perspective view showing a stepped shape, and fig. 11 (b) is a CFD analysis image showing a stepped shape.

Fig. 12 is an explanatory diagram of CFD analysis of the comparative example. Fig. 12 (a) is a perspective view showing a shape without a step, and fig. 12 (b) is a CFD analysis image showing a shape without a step.

Symbol description:

1 motor bicycle (vehicle)

2. Front wheel

12. Handle bar

13. Handle grip

50. First exterior member

60. Second exterior part

65. Joint part

66. Gap of

70. Stepped part

71. One side of the second exterior part

72. Inclined part

73. Front edge part

80. Outer member

81. Front side bending part

82. Rear side bending portion

85 Anterior involution portion

87 Rear side involution part

90 Inner side member

91 Lower side bending part

Detailed Description

Hereinafter, embodiments of the present utility model will be described with reference to the drawings. In the following description, a motorcycle (an example of a saddle-ride type vehicle) is described as an example of a vehicle. The directions such as the front, rear, left, right, and the like in the following description are the same as those in the vehicle unless otherwise specified. The drawings used in the following description show, at appropriate positions, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left of the vehicle, an arrow UP indicating the top of the vehicle, and a vehicle body left-right center line CL indicating the vehicle body left-right center position.

< Motor bicycle >

As shown in fig. 1, a motorcycle 1 is a racing type motorcycle. The motorcycle 1 includes front wheels 2 and rear wheels 3, a front fork 4 for supporting the front wheels 2, a swing arm 5 for supporting the rear wheels 3, a frame 6 for supporting the front fork 4 and the swing arm 5, an engine 7 (an internal combustion engine or a prime mover) supported by the frame 6, and a body cover 8.

The upper portions of the pair of left and right front forks 4 are rotatably supported by a head pipe 11 of the frame 6 via a steering rod 10.A lever type handle bar 12 is mounted on the top bridge of the steering lever 10.A front fender 20 is provided between the left and right front forks 4.

The frame 6 includes a head pipe 11, a pair of left and right main frames 15, a pair of left and right pivot frames 16, and a seat frame 17.

The head pipe 11 is inclined such that the upper end of the head pipe 11 is located further rearward than the lower end of the head pipe 11 in a side view of the vehicle.

The main frame 15 is inclined from the rear upper portion of the head pipe 11 in a front-to-rear low manner in a side view of the vehicle. The rear end portion of the main frame 15 is connected to the upper end portion of the pivot frame 16 at the vehicle body front-rear intermediate portion.

The pivot frame 16 extends downward from the rear end portion of the main frame 15 in a side view of the vehicle.

The seat frame 17 is connected to the rear of the main frame 15. The seat frame 17 is inclined from the rear of the main frame 15 in a front-lower-rear-higher manner in a side view of the vehicle.

The front end portion of the swing arm 5 is supported at the upper and lower central portions of the pivot frame 16 so as to be capable of swinging up and down. The rear wheel 3 is supported at the rear end of the swing arm 5.

The engine 7 is mounted on the inner side of the frame 6. For example, the engine 7 is an in-line four-cylinder engine having a crankshaft parallel to the vehicle width direction (the vehicle left-right direction).

A fuel tank 30 is provided above the engine 7 and between the left and right main frames 15. A seat 31 is provided on the seat frame 17 at the rear of the main frame 15.

The body cover 8 is provided to cover the components (for example, the frame 6 and the engine 7) of the motorcycle 1 from the outside. The body cover 8 includes a cowling structure 40 provided so as to cover the front part of the body of the motorcycle 1.

< Structure of fairing >

Referring to fig. 2 and 3 together, the cowling structure 40 is exposed to the vehicle front side when viewed from the vehicle front side (front side). The outer shape of the cowling structure 40 has a shape that separates in the vehicle up-down direction and separates in the vehicle width direction as going from the vehicle front end side toward the vehicle rear. The cowling structure 40 includes: a front cowling 41 covering an upper portion of a front side of the vehicle body; a first exterior member 50 that receives traveling wind; and a second exterior member 60 mounted to the first exterior member 50.

The front cowling 41 covers the components (for example, the upper portions of the left and right front forks 4 and the steering rod 10) at the upper portion of the front side of the vehicle body from the front of the vehicle. The outer surface of the front cowling 41 is inclined so as to be located above the vehicle as it goes toward the rear of the vehicle. The outer surface of the front cowling 41 is curved toward the front of the vehicle and above the vehicle.

A front opening 42 that opens to the front of the vehicle is formed in the front portion of the front cowl 41. The front opening 42 is provided so as to overlap with the vehicle body left-right center line CL in a front view of the vehicle. The front opening 42 has an outer shape that is line-symmetrical with respect to the vehicle body left-right center line CL as a symmetry axis when viewed from the front of the vehicle.

An intake port 43 is provided in the front of the front cowl 41. The air intake 43 is provided so as to face the front opening 42. For example, the air taken into the intake port 43 from the front opening 42 is supplied to the engine 7 via an air cleaner or the like, not shown.

A pair of right and left lamp openings 44 are formed in the front portion of the front cowl 41. The left and right lamp opening portions 44 are opened so as to correspond to a pair of left and right headlamps. The left and right lamp openings 44 are separated from each other through the front opening 42. The lamp opening 44 exposes the headlight to the front of the vehicle. The outer shape of the left and right lamp openings 44 has a line-symmetrical shape with the vehicle body left and right center line CL as a symmetry axis when viewed from the front of the vehicle.

The outer edge of the front cowl 41 in the vehicle width direction is inclined so as to be located outward in the vehicle width direction as it goes rearward from a portion adjacent to the front opening 42 (the front end portion of the front cowl 41) in a vehicle plan view. The outer edge of the front cowl 41 in the vehicle width direction is curved toward the vehicle front and outward in the vehicle width direction in a plan view of the vehicle.

< First exterior part >

The first exterior member 50 is an intermediate fairing connected to the front fairing 41. The first exterior member 50 covers the constituent members (for example, the steering rod 10 and the like) of the vehicle body front side upper-lower center portion from the vehicle front. The first exterior member 50 is provided with a pair of right and left side portions so as to be connected to the right and left side portions of the front cowl 41.

The first exterior member 50 is formed so as to smoothly bulge outward in the vehicle width direction from a portion (a front end portion 51 of the first exterior member 50) overlapping the front fork 4 as seen in a front view of the vehicle. The outer edge of the first exterior member 50 in the vehicle width direction is connected to the outer edge of the front cowl 41 in the vicinity of the handle 13 provided on the handle bar 12 in the vehicle front view. A part of the outer edge of the first exterior member 50 in the vehicle width direction bulges outward in the vehicle width direction so as to be located outside the outer edge of the second exterior member 60 in the vehicle width direction when viewed from the front of the vehicle.

< Second exterior part >

The second exterior member 60 is a winglet extending outward in the vehicle width direction from the first exterior member 50. The second exterior member 60 generates a negative lift force, which is a lift force downward of the vehicle, using the traveling wind. The second exterior member 60 has a function of pressing the front portion of the vehicle body using traveling wind. For example, the second exterior member 60 suppresses lifting of the front tire at the time of rapid acceleration of the motorcycle 1, and improves acceleration performance.

The second exterior member 60 is provided with a pair of right and left portions so as to correspond to the first exterior members 50 constituting the intermediate cowling. The outer shape of the right and left second exterior members 60 has a line-symmetrical shape with the right and left vehicle body center line CL as a symmetry axis in a front view of the vehicle.

The second exterior member 60 includes: a second outer body portion 61 extending outward in the vehicle width direction and rearward of the vehicle from a front end portion 51 (a portion overlapping the front fork 4 in a front view of the vehicle) of the first outer member 50; and a second outer connecting portion 62 extending in the vehicle width direction so as to connect the rear end portion of the second outer body portion 61 to the vehicle width direction outer side portion of the first outer member 50.

The second exterior body portion 61 extends outward in the vehicle width direction and rearward in the vehicle from the front end portion 51 of the first exterior member 50, and then is bent to extend downward in the vehicle and rearward in the vehicle when viewed from the front of the vehicle. The outer edge of the second exterior body portion 61 is connected to the outer edge of the first exterior member 50 in the vicinity of the front opening 42 in a plan view of the vehicle. The outer edge of the second exterior body portion 61 is curved toward the vehicle front and outward in the vehicle width direction in a vehicle plan view. The outer edge of the second exterior body portion 61 is also curved outward from the outer edge of the front cowl 41 in a plan view of the vehicle.

A front-rear opening portion 55 that opens to the vehicle front and rear is formed between the vehicle width direction outer side surface of the first exterior member 50 and the second exterior member 60. The front-rear opening 55 is formed in a pair in the left-right direction so as to correspond to the first left-right exterior member 50 and the second left-right exterior member 60. The front-rear opening portion 55 is surrounded by the vehicle width direction outer side surface of the first exterior member 50 and the surface of the second exterior member 60 facing the first exterior member 50 (the vehicle width direction inner side surface of the second exterior body portion 61 and the upper surface of the second exterior coupling portion 62).

< Junction >

Referring to fig. 4 to 9, the second exterior member 60 is joined to the first exterior member 50 in the vicinity of the lower portion of the lamp opening 44. The second exterior member 60 is joined to the first exterior member 50 at the vehicle width direction inner side portion of the second exterior body portion 61.

The joint portion 65 between the second exterior member 60 and the first exterior member 50 extends obliquely upward and outward in the vehicle width direction from a portion overlapping the vicinity of the inner edge of the front fork 4 in the vehicle width direction, as viewed from the front of the vehicle. The joint portion 65 extends linearly in a front view of the vehicle. The vehicle width direction outer end of the joint portion 65 is disposed at a position on the vehicle width direction inner side than the vehicle width direction outer end of the lamp opening portion 44 in a vehicle front view.

A gap 66 is formed in the joint 65. The gap 66 is formed in a straight line in a front view of the vehicle. For example, the size of the gap 66 (the interval in the vehicle vertical direction) is set to a size capable of absorbing the dimensional deviation of the first exterior member 50 and the second exterior member 60.

< Step >

The second exterior member 60 includes a stepped portion 70 upstream of at least a portion of the joint portion 65 joined to the first exterior member 50 in the traveling wind path. The running wind flow path is a flow path of running wind received by the first exterior member 50 during running of the motorcycle 1. The step portion 70 has a function of peeling off the traveling wind direction shown in fig. 5 and 6 when the motorcycle 1 is traveling straight and turning.

A part of the traveling wind flow path is formed from the front end portion 51 of the first exterior member 50 toward the vehicle rear so as to extend along the vehicle width direction outer side surface of the first exterior member 50. The traveling wind flow path upstream corresponds to the front of the vehicle. The step portion 70 is provided in the second exterior member 60 at a position forward of the rear end of the joint portion 65 in the vehicle.

The stepped portion 70 is a convex portion protruding from one surface 71 of the second housing member 60. One face 71 of the second exterior member 60 is a face facing the front of the vehicle and above the vehicle, of the outer faces of the second exterior member 60. The one surface 71 of the second exterior member 60 corresponds to a surface including a region that expands in the vehicle vertical direction from a portion overlapping the vicinity of the inner edge of the front fork 4 in the vehicle width direction toward the vehicle width direction outer side in the vehicle front view. One surface 71 of the second exterior member 60 corresponds to a surface including a region extending outward in the vehicle width direction and downward in the vehicle from the upper edge of the joint portion 65, as viewed from the front of the vehicle.

One surface 71 of the second housing member 60 is inclined so as to be higher as it goes downstream in the traveling wind flow path. One surface 71 of the second exterior member 60 is inclined so as to be located above the vehicle as it goes rearward of the vehicle, and is inclined so as to be located below the vehicle as it goes outward in the vehicle width direction.

The stepped portion 70 is disposed at a position on the vehicle upper side of the front wheel 2 and on the vehicle width direction inner side of the vehicle width direction outer end of the handle 13 provided on the handle bar 12. A part of the stepped portion 70 overlaps the front fork 4 in a front view of the vehicle. A part of the stepped portion 70 is disposed at the same height (position in the vehicle vertical direction) as the lower edge of the intake port 43 in a front view of the vehicle.

The step portion 70 includes an inclined portion 72 inclined with respect to the vehicle front-rear direction. The inclined portion 72 is inclined so that the step becomes lower as going downstream of the traveling wind flow path. The height of the inclined portion 72 (the height in the vehicle up-down direction) becomes lower as going from the front end of the inclined portion 72 toward the vehicle rear.

The inclined portion 72 is provided substantially parallel to the joint portion 65 extending in a straight line. The substantially parallel includes a case of being completely parallel to the joint portion 65 extending in a straight line and a case of being substantially parallel to the joint portion 65 extending in a straight line. The upper edge of the inclined portion 72 is provided substantially parallel to the joint portion 65 extending in a straight line when viewed from the front of the vehicle. The distance between the upper edge and the lower edge of the inclined portion 72 decreases as it goes outward in the vehicle width direction when viewed from the front of the vehicle.

The step portion 70 includes a front edge portion 73 extending from the front end of the inclined portion 72 toward the joint portion 65 in the vehicle width direction. The height of the front edge portion 73 (the height in the vehicle vertical direction) becomes lower as going from the front end of the inclined portion 72 toward the joint portion 65.

The leading edge 73 is provided so as to intersect the joint 65 extending in a straight line. The upper edge of the front edge portion 73 is inclined so as to form an acute angle with the joint portion 65 extending in a straight line when viewed from the front of the vehicle. The distance between the upper edge and the lower edge of the front edge portion 73 decreases toward the vehicle width direction inner side (the direction of the joint portion 65) when viewed from the front of the vehicle.

The step portion 70 has a step upper surface 74 connected to the upper edge of the inclined portion 72 and the upper edge of the leading edge portion 73. The stepped upper surface 74 is formed to be planar. The stepped upper surface 74 is provided at a place higher by one step than the one face 71 of the second exterior member 60. The stepped upper surface 74 is inclined so as to become higher as going downstream of the traveling wind flow path.

The stepped upper surface 74 is steeply inclined than the one surface 71 of the second exterior member 60 so as to be located above the vehicle as going toward the rear of the vehicle. The stepped upper surface 74 is inclined gently from the one surface 71 of the second exterior member 60 so as to be located below the vehicle as going outward in the vehicle width direction.

< Lateral Member and medial Member >

Referring to fig. 10, the second exterior member 60 includes an outer member 80 provided with a stepped portion 70 and an inner member 90 attached to the outer member 80. The outer member 80 includes: a front-side bending portion 81 provided upstream of the stepped portion 70 from the traveling wind flow path and bending toward the front of the vehicle; and a rear-side bent portion 82 provided downstream of the stepped portion 70 in the traveling wind flow path and bent toward the rear of the vehicle. The inner member 90 includes a lower bent portion 91 that is bent downward in the vehicle over a range of the front side fitting portion 85 that is fitted to the front side bent portion 81 and the rear side fitting portion 87 that is fitted to the rear side bent portion 82.

By bending the front-side bending portion 81 toward the vehicle front, the traveling wind can be smoothly rectified upward and rearward and downward and rearward. A part of the traveling wind that is directed upward and rearward of the vehicle flows in the direction of arrow W1 along the upper surface (one surface 71 of the second exterior member 60) of the outer member 80. A part of the traveling wind that is directed downward and rearward of the vehicle flows along the lower surface of the inner member 90.

A gap 86 (hereinafter also referred to as "anterior gap 86") is formed in the anterior mating portion 85. For example, the size of the front side gap 86 (the interval in the vehicle longitudinal direction) is set to a size that can absorb the dimensional deviation of the outer member 80 and the inner member 90.

A gap 88 (hereinafter also referred to as "back gap 88") is formed in the back-side mating portion. For example, the size of the rear side gap 88 (the interval in the vehicle longitudinal direction) is set to a size that can absorb the dimensional deviation of the outer member 80 and the inner member 90.

The lower end edge of the front curved portion 81 is provided below the front lower end edge of the inner member 90 along the front mating portion 85. The lower end edge of the front curved portion 81 is provided at a position forward of the vehicle than the front lower end edge of the inner member 90 along the front mating portion 85. By setting the outer member 80 side of the front side engaging portion 85 at a position upstream of the inner member 90 from the traveling wind flow path higher, the traveling wind is prevented from interfering with the front side engaging portion 85.

The lower end edge of the rear curved portion 82 is provided above the rear lower end edge of the inner member 90 along the rear mating portion 87. The lower end edge of the rear curved portion 82 is provided at a position forward of the vehicle than the rear lower end edge of the inner member 90 along the rear mating portion 87. By setting the inner member 90 side of the rear side engaging portion 87 at a position upstream of the outer member 80 from the traveling wind flow path higher, the traveling wind is prevented from interfering with the rear side engaging portion 87.

< Results of CFD analysis >

Fig. 11 is an explanatory diagram of CFD analysis according to the embodiment. Fig. 11 (a) is a perspective view showing a stepped shape, and fig. 11 (b) is a CFD analysis image showing a stepped shape. Fig. 12 is an explanatory diagram of CFD analysis of the comparative example. Fig. 12 (a) is a perspective view showing a shape without a step, and fig. 12 (b) is a CFD analysis image showing a shape without a step.

The creator of the present utility model confirms the effect of the stepped portion 70 (convex portion of the present embodiment) provided in the second exterior member 60 (winglet of the present embodiment) by the air inflow suppressing effect to the joint portion 65 and the numerical hydrodynamic (Computational Fluid Dynamics: CFD) analysis for confirming the running resistance.

In CFD analysis, a racing car type vehicle (motorcycle 1 of the present embodiment) is used. In such a vehicle, wind is caused to flow from the front of the vehicle toward the rear of the vehicle. In fig. 11 and 12, the speed (strength) of the wind flow is shown in black and white. The flow of wind becomes faster (stronger) as it goes from white to black. The pressure (height) is indicated by black and white on the surface of the cowling. The pressure of the cowling surface increases (becomes higher) as it approaches black from white.

As is clear from the CFD analysis result, the stepped portion 70 (the convex portion in the present embodiment) suppresses turbulence and increases the flow velocity, thereby suppressing the inflow of the wind direction joint portion 65. This can confirm that the amount of wind flowing into the joint 65 decreases. According to the present embodiment, the air accumulation in the joint portion 65 can be reduced as compared with the comparative example, and thus the operability is improved.

< Effect >

As described above, the motorcycle 1 according to the above embodiment includes the first exterior member 50 that receives the traveling wind and the second exterior member 60 attached to the first exterior member 50. The second exterior member 60 includes a stepped portion 70 upstream of at least a portion of the joint portion 65 joined to the first exterior member 50 in the traveling wind path.

According to this configuration, the traveling wind can be peeled off by the step portion 70, and thus inflow of the traveling wind into the joint portion 65 of the first exterior member 50 and the second exterior member 60 can be suppressed. Therefore, turbulence can be suppressed from being generated in the joint portion 65 of the exterior members 50, 60.

In the above embodiment, the step portion 70 has the inclined portion 72 inclined with respect to the vehicle front-rear direction. The inclined portion 72 is inclined so that the step becomes lower as going downstream of the traveling wind flow path.

According to this configuration, the air resistance can be kept to a minimum and the traveling wind can be peeled off more effectively than in the case where the inclined portion 72 is inclined so that the step increases as going downstream of the traveling wind flow path. Therefore, the occurrence of turbulence in the joint 65 of the exterior members 50, 60 can be more effectively suppressed while minimizing the air resistance.

In the above embodiment, the step portion 70 includes the front edge portion 73 from the front end of the inclined portion 72 toward the joint portion 65 in the vehicle width direction.

According to this configuration, since the traveling wind can be peeled off from the front edge portion 73 in addition to the inclined portion 72 of the step portion 70, the inflow of the traveling wind into the joint portion 65 between the first exterior member 50 and the second exterior member 60 can be more effectively suppressed. This makes it easy to form an air pool in the region along the joint 65. Therefore, the occurrence of turbulence in the joint portion 65 of the exterior members 50, 60 can be more effectively suppressed.

In the above embodiment, the inclined portion 72 is provided substantially in parallel with the joint portion 65 extending in a straight line.

According to this structure, compared to the case where the inclined portion 72 is provided so as to intersect the joint portion 65 extending in a straight line, the air pool can be formed more stably in the region along the joint portion 65. Therefore, the occurrence of turbulence in the joint portion 65 of the exterior members 50, 60 can be more effectively suppressed.

In the above embodiment, the step portion 70 is a convex portion protruding from the one surface 71 of the second exterior member 60.

According to this configuration, since the traveling wind can be peeled off by the configuration in which the stepped portion 70 is a convex portion, the traveling wind can be prevented from flowing into the joint portion 65 between the first exterior member 50 and the second exterior member 60. Therefore, turbulence can be suppressed from being generated in the joint portion 65 of the exterior members 50, 60.

In the above embodiment, the second exterior member 60 is a winglet extending outward in the vehicle width direction from the first exterior member 50.

According to this configuration, the traveling wind can be peeled off by the stepped portion 70 provided in the winglet, and thus inflow of the traveling wind into the junction 65 between the first outer member 50 and the winglet can be suppressed. Therefore, turbulence can be suppressed from being generated in the joint portion 65 of the winglet.

In the above embodiment, the second exterior member 60 includes the outer member 80 provided with the stepped portion 70 and the inner member 90 attached to the outer member 80. The outer member 80 includes: a front-side bending portion 81 provided upstream of the stepped portion 70 from the traveling wind flow path and bending toward the front of the vehicle; and a rear-side bent portion 82 provided downstream of the stepped portion 70 in the traveling wind flow path and bent toward the rear of the vehicle. The inner member 90 includes a lower bent portion 91 that is bent downward in the vehicle over a range of the front side fitting portion 85 that is fitted to the front side bent portion 81 and the rear side fitting portion 87 that is fitted to the rear side bent portion 82.

According to this structure, the traveling wind can be rectified by the portions (the front side bent portion 81, the rear side bent portion 82, and the lower side bent portion 91) located on the front-rear lower side than the stepped portion 70.

In the above embodiment, the lower end edge of the front curved portion 81 is provided at a position below the vehicle along the front lower end edge of the inner member 90 of the front mating portion 85.

According to this structure, the inflow of the traveling wind to the front side joining portion 85 can be suppressed as compared with the case where the lower end edge of the front side bending portion 81 is provided at a position above the vehicle along the front side lower end edge of the inner member 90 of the front side joining portion 85. Therefore, the traveling wind can be rectified more effectively.

In the above embodiment, the lower end edge of the rear curved portion 82 is provided at a position above the vehicle than the rear lower end edge of the inner member 90 along the rear mating portion 87.

According to this structure, compared to the case where the lower end edge of the rear curved portion 82 is provided at a position below the vehicle along the rear lower end edge of the inner member 90 of the rear mating portion 87, inflow of the traveling wind to the rear mating portion 87 can be suppressed. Therefore, the traveling wind can be rectified more effectively.

In the above embodiment, the stepped portion 70 is disposed at a position that is on the vehicle width direction inner side than the vehicle width direction outer end of the handle 13 provided to the handle bar 12 and that is above the front wheel 2.

According to this configuration, the stepped portion 70 can suppress occurrence of turbulence in the joint portion 65 of the exterior members 50, 60, and thus can suppress a decrease in aerodynamic performance.

In the above embodiment, the gap 66 is formed in the joint 65.

According to this structure, the gap 66 of the joint 65 can absorb the dimensional deviation of the first and second exterior members 50 and 60.

< Modification >

In the above-described embodiment, the example was described in which the step portion has the inclined portion inclined with respect to the vehicle longitudinal direction, and the inclined portion is inclined so that the step difference becomes lower as going downstream in the traveling wind flow path. For example, the inclined portion may be inclined so that the step increases as going downstream of the traveling wind flow path. For example, the inclination pattern of the inclined portion may be changed according to the design specification.

In the above embodiment, the step portion has been described as being provided with the front edge portion from the front end of the inclined portion toward the joint portion in the vehicle width direction, but the present invention is not limited thereto. For example, the tip of the inclined portion may be adjacent to the joint portion in the vehicle width direction. For example, the step portion may not be provided from the front end of the inclined portion toward the front edge portion of the joint portion in the vehicle width direction. For example, the arrangement form of the leading edge portion can be changed according to the design specification.

In the above embodiment, the inclined portion is provided substantially in parallel with the joint portion extending in a straight line, but the present invention is not limited to this. For example, the inclined portion may be provided so as to intersect with the joint portion extending in a straight line. For example, the arrangement form of the inclined portion with respect to the joint portion may be changed according to the design specification.

In the above embodiment, the example in which the step portion is the convex portion protruding from one surface of the second exterior member has been described, but the present invention is not limited to this. For example, the step portion may be a concave portion recessed at one surface of the second exterior member. For example, the step portion may include at least one of a convex portion and a concave portion. For example, the configuration of the step portion may be changed according to design specifications.

In the above embodiment, the example in which the second exterior member is the winglet extending outward in the vehicle width direction from the first exterior member has been described, but the present invention is not limited thereto. For example, in the case where the first exterior member is an inner fairing, the second exterior member may be an outer fairing mounted to the inner fairing. For example, the second exterior member may be an exterior member other than the winglet or the outer fairing. For example, the form of the second exterior member can be changed according to the design specification.

In the above-described embodiment, the example was described in which the second exterior member includes the outer member provided with the stepped portion and the inner member attached to the outer member, the outer member includes the front side bent portion provided upstream in the traveling wind flow path of the stepped portion and bent toward the front of the vehicle, and the rear side bent portion provided downstream in the traveling wind flow path of the stepped portion and bent toward the rear of the vehicle, and the inner member includes the lower side bent portion bent toward the lower side of the vehicle over the range of the front side bent portion and the rear side bent portion. For example, the second housing part may be a single piece. For example, the second exterior member may not be constituted by combining a plurality of members. For example, the structural form of the second exterior member can be changed according to the design specification.

In the above embodiment, the example was described in which the lower end edge of the front curved portion is provided below the vehicle along the front lower end edge of the inner member of the front mating portion, but the present invention is not limited to this. For example, the lower end edge of the front curved portion may be provided above the front lower end edge of the inner member along the front mating portion. For example, the arrangement form of the lower end edge of the front side bent portion can be changed according to the design specification.

In the above embodiment, the example was described in which the lower end edge of the rear curved portion is provided above the vehicle along the rear lower end edge of the inner member of the rear joining portion, but the present invention is not limited to this. For example, the lower end edge of the rear curved portion may be provided at a position below the vehicle than the rear lower end edge of the inner member along the rear mating portion. For example, the arrangement form of the lower end edge of the rear curved portion can be changed according to the design specification.

In the above-described embodiment, the step portion is disposed at the vehicle width direction inner side than the vehicle width direction outer end of the handle provided in the handle bar, and at the vehicle upper side than the front wheel, but the present invention is not limited thereto. For example, the stepped portion may be disposed at a position outside the outer end of the handlebar in the vehicle width direction. For example, the step portion may be disposed below the vehicle with respect to the upper end of the front wheel. For example, the arrangement of the step portion may be changed according to the design specification.

In the above embodiment, the example in which the gap is formed in the joint has been described, but the invention is not limited to this. For example, a porous soft member (e.g., sponge) may be provided in the gap between the joining portions. For example, the winglet (second outer member) may be integrated with the intermediate fairing (first outer member). For example, the form of the joint portion may be changed according to design specifications.

In the above embodiment, the example in which the engine is an in-line four-cylinder engine has been described, but the invention is not limited to this. For example, the engine may be a single cylinder engine. For example, the engine configuration may be changed according to design specifications.

In the above-described embodiment, the motorcycle as an example of the vehicle has been described, but the present utility model is not limited thereto. For example, the present utility model may be applied to a saddle-ride type vehicle other than a motorcycle. For example, the saddle-ride type vehicle includes all vehicles in which a driver rides over a vehicle body, and includes not only motor bicycles (including bicycles with a prime mover and scooter type vehicles) but also three-wheeled vehicles (vehicles including front two-wheeled and rear two-wheeled in addition to front two-wheeled and rear two-wheeled). The present utility model can be applied not only to a motorcycle but also to a four-wheeled vehicle (such as a bagel vehicle) such as a motor vehicle.

The present utility model is also applicable to a vehicle including an electric motor in a prime mover. Further, the present utility model can be applied to vehicles other than straddle-type vehicles (such as passenger cars, buses, and trucks).

The configuration of the above-described embodiment is an example of the present utility model, and the constituent elements of the embodiment may be replaced with known constituent elements or the like, and various modifications may be made without departing from the scope of the present utility model.

Claims (10)

1. A vehicle provided with a first exterior member (50) that receives traveling wind and a second exterior member (60) that is attached to the first exterior member (50), characterized in that,

The second exterior member (60) has a stepped portion (70) upstream of at least a part of the joint portion (65) joined to the first exterior member (50) in the traveling wind flow path.

2. The vehicle of claim 1, wherein the vehicle is a vehicle,

The step part (70) is provided with an inclined part (72) inclined relative to the front-rear direction of the vehicle,

The inclined portion (72) is inclined so that the step difference becomes lower as going downstream of the running wind flow path.

3. The vehicle of claim 2, wherein the vehicle is further characterized in that,

The step portion (70) is provided with a front edge portion (73) which extends from the front end of the inclined portion (72) toward the joint portion (65) in the vehicle width direction.

4. A vehicle according to claim 2 or 3, characterized in that,

The inclined portion (72) is provided substantially parallel to the joint portion (65) extending in a straight line.

5. A vehicle according to any one of claim 1 to 3, wherein,

The step portion (70) is a protruding portion protruding from one surface (71) of the second housing member (60).

6. A vehicle according to any one of claim 1 to 3, wherein,

The second outer member (60) is a winglet extending outward in the vehicle width direction from the first outer member (50).

7. A vehicle according to any one of claim 1 to 3, wherein,

The second exterior member (60) is provided with:

an outer member (80) provided with the step (70); and

An inner member (90) attached to the outer member (80),

The outer member (80) is provided with:

A front-side bending section (81) which is provided at a position upstream of the step section (70) from the traveling wind flow path and which bends toward the front of the vehicle; and

A rear-side bending portion (82) provided downstream of the stepped portion (70) in the traveling wind flow path and bent toward the rear of the vehicle,

The inner member (90) is provided with a lower bent portion (91) which is bent downward in the vehicle over a front-side fitting portion (85) which is fitted to the front-side bent portion (81) and a rear-side fitting portion (87) which is fitted to the rear-side bent portion (82).

8. The vehicle of claim 7, wherein the vehicle is further characterized by,

The lower end edge of the front curved portion (81) is provided at a position below the vehicle along the front lower end edge of the inner member (90) of the front mating portion (85).

9. The vehicle of claim 7, wherein the vehicle is further characterized by,

The lower end edge of the rear curved portion (82) is provided at a position above the vehicle than the rear lower end edge of the inner member (90) along the rear mating portion (87).

10. A vehicle according to any one of claim 1 to 3, wherein,

A gap (66) is formed in the joint (65).