CN217778846U

CN217778846U - Saddle-ride type vehicle

Info

Publication number: CN217778846U
Application number: CN202190000238.8U
Authority: CN
Inventors: 石川明子; 中西龙一; 宫岛由
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2020-01-23
Filing date: 2021-01-13
Publication date: 2022-11-11
Anticipated expiration: 2031-01-13
Also published as: BR112022013001A2; WO2021149544A1; JP7303909B2; JPWO2021149544A1

Abstract

A saddle-ride type vehicle (motorcycle (1)) is provided with a central protruding part (53) protruding downwards at the rear part of a first range (H1) on the inner side of a bottom cover (40) in the vehicle width direction, wherein the bottom cover covers the lower surface of a vehicle body. The vehicle body structure is provided with left and right outer protruding portions (54, 55) in a second range (H2) which is located on the outer side of the first range (H1) in the vehicle width direction, wherein the left and right outer protruding portions (54, 55) are protruding portions which protrude downward, are continuous with the outer side of the central protruding portion (53) in the vehicle width direction, and extend outward in the vehicle width direction. The outer side portions (third left protruding portion (77), third right protruding portion (83)) of the outer protruding portions (54, 55) are provided so as to change the position in the vehicle longitudinal direction with respect to the protruding edge line portion (72) of the center protruding portion (53).

Description

Saddle-ride type vehicle

Technical Field

The utility model relates to a straddle type vehicle.

This application claims priority based on Japanese patent application No. 2020-009383 filed on the sun on 23.1.2020, and the contents of which are incorporated herein by reference.

Background

For example, patent document 1 discloses a saddle-ride type vehicle including an undercover that covers a lower surface of a vehicle body. A radiator is arranged above the front part of the bottom cover. The air guide portion for guiding the exhaust air from the radiator is recessed toward the upper side in the vehicle width direction of the under cover. The wind guide part extends from the front part to the rear end part of the bottom cover. The air guide portion has a bottom surface displaced upward with respect to the lower surface of the cover. A central protruding portion (hanging portion 18 g) protruding downward from the bottom surface of the air guide portion is formed at the rear end portion of the bottom cover. The central protruding portion makes rainwater and the like entering the air guide portion easily drip or scatter at the rear end portion of the bottom cover, thereby improving the water removal performance of the bottom cover.

Prior art documents

Patent document

Patent document 1: japanese patent No. 5142885

SUMMERY OF THE UTILITY MODEL

Summary of the utility model

Problem to be solved by utility model

However, in a saddle-ride type vehicle, particularly in the case of a scooter type vehicle, vehicle components related to a prime mover (for example, a muffler, an air cleaner, and the like) may be disposed on the vehicle width direction outer side of the vehicle body rear portion. In this case, if the center protruding portion is provided only on the vehicle width direction inner side of the rear end portion of the under cover, there is a problem that water that has turned around to the vehicle width direction outer side of the center protruding portion is liable to splash onto the vehicle member.

The present invention is proposed to solve the above problems. An object of the present invention is to provide a straddle-type vehicle capable of suppressing water splashing to a vehicle component disposed outside a vehicle width direction while ensuring water removal performance at a rear end portion of a undercover covering a vehicle body lower surface.

Means for solving the problems

A first aspect of the present invention is a straddle-type vehicle (1) including a bottom cover (40) covering a lower surface of a vehicle body, wherein a first range (H1) inside a vehicle width direction of the bottom cover (40) includes a central protruding portion (53) protruding downward, a second range (H2) outside the vehicle width direction than the first range (H1) includes outer protruding portions (54, 55), the outer protruding portions (54, 55) are protruding portions protruding downward, and are connected to an outer side of the central protruding portion (53) in the vehicle width direction and extend outward in the vehicle width direction, and the outer portions of the outer protruding portions (54, 55) are disposed so as to vary a position in the vehicle front-rear direction with respect to the central protruding portion (53).

According to this configuration, water flowing on the lower surface of the undercover is dropped or scattered by the central projecting portion of the cover rear portion in the first range on the vehicle width direction inner side of the undercover. The water that has been turned around to the outside in the vehicle width direction of the central protruding portion is caused to drip or scatter by the outside protruding portion that is continuous with the outside in the vehicle width direction of the central protruding portion. The outer projecting portion has an outer portion that changes the position in the vehicle longitudinal direction with respect to the center projecting portion, and therefore the following effects are exhibited. That is, the central protruding portion defines a water removal position on the inner side in the vehicle width direction. The position of the outer extension part for dripping or scattering water is set independently from the position of the central extension part in the front-back direction. Therefore, water removal performance at the rear end portion of the under cover can be ensured, and water splashing to vehicle components arranged on the outer side in the vehicle width direction can be restrained.

In a second aspect of the present invention, based on the first aspect, the outer side protruding portions (54, 55) are provided on both sides in the vehicle width direction with respect to the central protruding portion (53).

According to this configuration, the outer projecting portions are provided on both sides (right and left sides) in the vehicle width direction, thereby providing the following effects. That is, water can be dropped or scattered at appropriate positions for different vehicle components arranged on the outer sides in the vehicle width direction. Therefore, water splashing to vehicle components disposed on the vehicle width direction outer side can be further suppressed.

In a third aspect of the present invention, in addition to the second aspect, at least one of the outer portions of the outer extensions (54, 55) on both sides in the vehicle width direction is displaced rearward from the central protrusion (53).

According to this configuration, the water that has turned around to the outside in the vehicle width direction of the central protruding portion during vehicle traveling flows rearward of the central protruding portion, but the water is easily caught by the outer protruding portion. Therefore, water splashing to vehicle components disposed on the vehicle width direction outer side can be further suppressed.

A fourth aspect of the present invention is the first or the third aspect, wherein the bottom cover (40) is provided with a radiator (41) above the first range (H1), the radiator (41) is provided with a fan (44), the bottom cover (40) is provided with an air guide portion (56) which guides the discharged air from the radiator (41) from the front portion to the rear portion of the first range (H1) to the lower portion of the bottom cover (40) and then causes the discharged air to flow backward, and the central protrusion (53) is wider in the vehicle width direction than the outer diameter of the fan (44) of the radiator (41).

According to this configuration, the exhaust air from the radiator flows rearward through the air guide portion provided in the first range. The width of the discharge air from the radiator approximately depends on the outer diameter of the fan. By providing the central protruding portion so as to be wider than the outer diameter width of the fan, the flow of water associated with the discharge air from the radiator is easily blocked by the central protruding portion. Therefore, the water removal performance in the first range of the undercover can be satisfactorily ensured.

A fifth aspect of the present invention is the fourth aspect, wherein the air guide portion (56) has a protruding shape portion (84) that extends in the vehicle longitudinal direction and that has a rear end connected to the central protruding portion (53).

According to this configuration, the air discharged from the radiator is rectified to reach the central protruding portion by the protruding shape portion extending in the vehicle front-rear direction, and therefore the following effects are obtained. That is, since the discharge air from the radiator smoothly flows to the central protruding portion, the flow of water accompanying the discharge air from the radiator is easily blocked by the central protruding portion. Therefore, the water removal performance in the first range of the undercover can be satisfactorily ensured.

A sixth aspect of the present invention is the fourth or fifth aspect, wherein the outside extension (54, 55) is located on a position closer to the outside in the vehicle width direction than an outer diameter of the fan (44) of the radiator (41).

According to this structure, the periphery of the outer protruding portion is less likely to be affected by the exhaust air from the radiator. Therefore, the water can be easily controlled from dripping or scattering by the outer projecting portion, and water can be further prevented from splashing to the vehicle components disposed on the outer side in the vehicle width direction.

The seventh aspect of the present invention is the seventh aspect of the first to sixth aspects, wherein the saddle-ride type vehicle is provided with an exhaust pipe (37) of the power unit (20) on one side of the vehicle width direction, and the outside extension (54) is located in front of the exhaust pipe (37).

According to this configuration, the outer projecting portion disposed on one side in the vehicle width direction is positioned in front of the exhaust pipe disposed on the same one side in the vehicle width direction, and therefore water splashing to the exhaust pipe can be favorably suppressed.

An eighth aspect of the present invention is the seventh aspect described above, wherein the straddle-type vehicle is provided with a swing arm (21) having a front end side swingably supported to the frame (11) via a pivot (29) and a rear end side supporting the rear wheel (4), the pivot (29) is located at a position rearward of the center protruding portion (53), the outer side protruding portion (54) is located at a position rearward of the pivot (29).

According to this configuration, the outer projecting portion disposed on one side in the vehicle width direction is located further rearward than the pivot shaft located rearward of the central projecting portion. In this way, the outer projecting portion is displaced largely rearward of the central projecting portion and approaches the exhaust pipe, so that water splashing to the exhaust pipe can be suppressed satisfactorily.

The ninth aspect of the present invention is based on the seventh or eighth aspect, wherein the straddle-type vehicle is provided with air inlets (27, 28) of the power unit (20) at the other side of the vehicle width direction on the one side of the vehicle width direction, and the outside extension (55) is located at a position closer to the front than the air inlets (27, 28) at the other side of the vehicle width direction.

According to this configuration, the outer projecting portion disposed on the other side in the vehicle width direction is positioned forward of the intake port disposed on the other side in the same vehicle width direction, and therefore water splashing to the intake port can be favorably suppressed.

A tenth aspect of the present invention is the ninth aspect, wherein the straddle-type vehicle is provided with a side stand (36) supporting the vehicle body in an inclined posture at a position closer to the front than the air inlet (27, 28) at the other side in the vehicle width direction, and the outside extension (55) at the other side in the vehicle width direction is formed in a V-shape protruding toward one side in the vehicle front-rear direction.

According to this configuration, since the outer extension portion disposed on the other side in the vehicle width direction is bent in a V-shape with respect to the side jiffy stand disposed on the other side in the vehicle width direction, the following effects are exhibited. That is, the outer projecting portion is bent so as to avoid the movable range of the side stand, and thereby a gap between the side stand and the outer projecting portion can be secured.

Effect of the utility model

According to the present invention, it is possible to provide a straddle-type vehicle that can ensure water removal performance at the rear end portion of a bottom cover that covers the lower surface of the vehicle body, and that can suppress water splashing to vehicle components disposed outside the vehicle width direction.

Drawings

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

Fig. 2 is a left side view of a partial cross section including the periphery of the under cover of the motorcycle.

Fig. 3 is a bottom view of the periphery of the bottom cover.

Fig. 4 is a left side view of the bottom cover.

Fig. 5 is a right side view of the bottom cover.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The directions such as front, rear, left, right, and the like in the following description are the same as those in the following vehicle unless otherwise noted. In the drawings used in the following description, arrow FR indicating the front of the vehicle, arrow LH indicating the left of the vehicle, arrow UP indicating the upper side of the vehicle, and line CL indicating the left-right center of the vehicle body are shown at appropriate positions.

< vehicle entirety >

As shown in fig. 1, a motorcycle (saddle-ride type vehicle) 1 of the present embodiment has a bottom step 9 between a seat 5 and a handlebar 2. The motorcycle 1 is a scooter type vehicle of a low floor type in which a straddle space K1 is formed between a seat 5 and a handlebar 2. The motorcycle 1 includes a front wheel 3 as a steering wheel and a rear wheel 4 as a driving wheel. The front wheel 3 is supported by the lower portions of a pair of left and right front forks 6.

The front wheel 3 can be steered by a lever-type handlebar 2. The steering system components including the front wheel 3 and the left and right front forks 6 are supported by a head pipe 12 at the front end of the frame 11 so as to be able to steer.

The rear wheel 4 is supported by the rear portion of a swing unit (swing power unit) 20. The motorcycle 1 is a unit swing type vehicle, and the rear wheel 4 swings integrally with a prime mover (for example, an engine E).

The motorcycle 1 includes a pair of left and right bottom steps 9 on which a driver seated on the seat 5 places his or her feet, and a center tunnel CT extending in the vehicle front-rear direction between the left and right bottom steps 9. The center tunnel CT is formed at a lower position than the seat 5 in front of the seat 5. A straddle space K1 for a driver to straddle the vehicle body is formed above the center tunnel CT.

The frame 11 of the motorcycle 1 includes: a head pipe 12 at a front end portion; a down frame 13 extending downward and rearward from the head pipe 12; a pair of left and right lower frames 14 extending rearward so as to branch left and right from a lower end of the down frame 13 and then bent upward; a pair of left and right sub-frames 14b installed between the down frame 13 and the left and right under frames 14; and a pair of left and right rear frames 15 having front end portions connected to the left and right sub-frames 14b and extending in a vertically lower and higher manner, and front and rear intermediate portions supported by upper end portions of the left and right lower frames 14. In the present embodiment, "intermediate" means a range including not only the center of the target region but also the vicinity of the center. The left and right lower frames 14 include pivot portions 14c (see fig. 2) at rear lower ends thereof for supporting the swing unit 20.

The periphery of the vehicle body frame 11 is covered with a vehicle body cover 18. The vehicle body cover 18 includes: a pair of left and right bottom pedals 9 for putting feet on a driver seated in the seat 5; a center tunnel CT disposed between the left and right bottom pedals 9 and extending in the front-rear direction; a front body cover (front cover) 17a connected to the left and right foot plates 9 and the front of the center tunnel CT; a rear body cover (rear cover) 17b connected to the left and right foot plates 9 and to the rear of the center tunnel CT; and a floor cover 40 disposed below the left and right floor boards 9 and the center tunnel CT to cover the lower surface of the vehicle body.

< swing Unit >

As shown in fig. 1 and 2, the swing unit 20 integrally includes an engine (internal combustion engine) E disposed on the front portion and a transmission (e.g., a V-belt type continuously variable transmission) M disposed on the rear left side. The front end side of the swing unit 20 is supported by the pivot portion 14c of the frame 11. The front end side of the swing unit 20 is supported by the pivot portion 14c so as to be swingable up and down via the suspension link 33 and the pivot shaft 29 along the vehicle width direction (left-right direction). A lower end portion of the rear cushion 7 serving as a cushion device is connected to a rear end portion of the swing unit 20. The upper end of the rear cushion 7 is connected to the rear portion of the vehicle body frame 11 (rear frame 15). A side stand 36 for supporting the vehicle body in a posture inclined to the left side is attached to the left under frame 14.

The engine E has a rotation center axis of a crankshaft (not shown) extending in the left-right direction (vehicle width direction). The engine E has a cylinder portion 24 projecting substantially horizontally (specifically, inclined slightly higher in front and lower in rear) from the front end of the crankcase 23 toward the front. A transmission case 21 as a rear arm that extends leftward and then rearward is integrally provided on the left side of the crankcase 23.

A throttle area 26 is connected to an upper portion of a cylinder portion 24 of the engine E, and an exhaust pipe 37 is connected to a lower portion of the cylinder portion 24. An air cleaner 22 is connected to the upstream side of the throttle region 26. The air cleaner 22 is disposed above the transmission case 21. The exhaust pipe 37 is bent appropriately below the cylinder portion 24 and extends rearward. The exhaust pipe 37 is connected to a muffler (muffler) 38 disposed on the right side of the rear wheel 4.

An intake passage 21a is provided at a front end portion of the transmission case 21. The intake passage 21a includes an intake port 27 that opens toward the front of the vehicle, for example. The intake passage 21a can introduce outside air into the transmission case 21. The transmission M in the transmission case 21 can be cooled by this outside air.

The air cleaner 22 includes an intake port 28 that opens toward the front of the vehicle, for example, at a front end portion thereof. The intake port 28 is disposed above the intake passage 21a, and opens toward the front of the vehicle, for example.

A radiator 41 for cooling the engine E is disposed above the undercover 40. The radiator 41 is a heat radiating portion of a cooling device of the engine E. The heat sink 41 has a rectangular plate shape in a plan view. The heat sink 41 is disposed in an inclined posture such that the thickness direction is high in the front and low in the rear. The heat sink 41 includes a fan 44 on the rear surface side, for example. The fan 44 is, for example, an electric axial fan, and the rotation of the fan 44 causes outside air to flow from the front to the rear of the core. Thereby, the cooling water flowing through the radiator 41 is cooled and used for cooling the engine E.

< bottom cover >

As shown in fig. 2 and 3, the under cover 40 covers a range extending over the left and right under frames 14 in the vehicle width direction from below. The bottom cover 40 has a substantially horizontal plate shape except for a tunnel 52 and left and

right side portions

57b and 57c, which will be described later. The portions of the undercover 40 other than the tunnel portion 52 and the left and

right side portions

57b, 57c constitute a cover lower surface portion 57 that faces the road surface and is substantially horizontal to the road surface. The undercover 40 is disposed below the left and right under frames 14, and covers the left and right under frames 14 and the like from below. The undercover 40 has a substantially rectangular shape in plan view, except for left and right extending

portions

58 and 59 described later.

A predetermined range (hereinafter referred to as a first range H1) on the inside of the under cover 40 in the vehicle width direction is an air guide portion 56 that guides the discharge air from the radiator 41. The radiator 41 is disposed above (on the upper surface side) the front portion of the bottom cover 40 in a standing posture. A tunnel 52 that projects upward along the outer periphery of the rear surface of the heat sink 41 is formed in the front portion of the first range H1 of the bottom cover 40. The passage portion 52 forms a rectangular opening 61 facing the rear surface of the heat sink 41. The opening 61 is formed along the rear surface of the heat sink 41. The tunnel portion 52 opens toward the vehicle lower side. The duct portion 52 forms an air guide passage having a rectangular cross section behind the rear surface of the heat sink 41.

The bottom surface portion of the duct portion 52 displaced upward relative to the cover lower surface portion 57 is an inclined portion 64 extending obliquely rearward and forward from the upper edge portion of the opening 61. An upper bent portion 64a bent toward the rear surface of the heat sink 41 is formed at an upper portion of the inclined portion 64. A lower bent portion 64b bent rearward is formed at a lower portion of the inclined portion 64. The lower end of the inclined portion 64 is connected to the cover lower surface portion 57 in the same plane, for example. In other words, the lower end portion of the inclined portion 64 terminates at the front-rear intermediate portion of the under cover 40. In the figure, reference numeral 65 denotes right and left side surface portions of the tunnel portion 52, which are triangular in side view.

The lower end of the passage portion 52 opens downward on the cover lower surface portion 57. The front edge 62a of the opening 62 at the lower end of the passage portion 52 coincides with the lower edge of the opening 61 at the front end of the passage portion 52. The rear edge portion 62b of the opening 62 at the lower end of the passage portion 52 coincides with the terminal end portion of the lower curved portion 64b of the inclined portion 64. In the figure, reference numeral 62c denotes left and right side edge portions of the opening 62 at the lower end of the tunnel portion 52.

The first range H1 and the rear portion of the air guide portion 56 are defined behind the lower end portion of the inclined portion 64 by, for example, a protrusion (protruding shape portion) 84 protruding from the hood lower surface portion 57 in the vehicle longitudinal direction. The bead 84 has, for example, a U-shaped cross-sectional shape that opens upward and extends in the vehicle front-rear direction. The plurality of ribs 84 are provided at intervals in the vehicle width direction. The adjacent ribs 84 may be treated as grooves along the vehicle longitudinal direction.

For example, the fan 44 is disposed in the opening 61 at the front end of the duct portion 52 on the rear surface side of the heat sink 41. The fan 44 has a rotation center axis along a normal direction of the rear surface of the heat sink 41. The first range H1 and the air guide portion 56 are provided to be wider than the outer diameter D1 of the fan 44 of the radiator 41 in the vehicle width direction. This facilitates the air guide portion 56 to guide the discharge air from the fan 44. The fan 44 may be disposed on the front surface side of the heat sink 41. The wind guide portion 56 is formed from the front portion to the rear end portion of the bottom cover 40. The bottom cover 40 may have a wind guide portion 56 recessed upward with respect to the cover lower surface portion 57 at the rear portion of the first range H1.

The bottom cover 40 includes a central protruding portion 53 protruding downward at the rear end portion of the first range H1. The central protruding portion 53 functions to cause water flowing on the lower surface side (the air guide portion 56) of the first range H1 to drip or scatter at the rear end portion of the cover. The central protruding portion 53 has a front inclined portion 53a inclined forward high and backward low and a rear inclined portion 53b inclined forward low and backward high. The center protrusion 53 has a V-shaped cross section and extends in the vehicle width direction. In the figure, reference numeral 72 denotes a projecting ridge line portion of the center projecting portion 53 (a ridge line portion between the front inclined portion 53a and the rear inclined portion 53b, an end edge portion facing the front of the vehicle). The water flowing on the lower surface side of the first range H1 reaches the projecting ridge line portion 72 of the central projecting portion 53, and drips or scatters rearward and downward from the projecting ridge line portion 72.

The center protruding portion 53 is provided to be wider than the outer diameter D1 of the fan 44 of the radiator 41 in the vehicle width direction. Thus, the central protrusion 53 easily receives the flow of water associated with the discharge air from the fan 44. The rear ends of the plurality of ribs 84 abut and are connected to the central protrusion. This rectifies the flow of the wind flowing up to the center protrusion 53, thereby improving the function of the center protrusion 53.

The under cover 40 includes left and right outer extending

portions

54, 55 that are continuous with the vehicle width direction outer side of the central protruding portion 53 and extend outward in the vehicle width direction, respectively, in a second range H2 that is outward (left and right sides) in the vehicle width direction from the first range H1. The outer projecting

portions

54, 55 are rib-shaped projecting portions projecting downward of the cover lower surface portion 57, and function to cause water droplets that have been turned around outward in the vehicle width direction of the center projecting portion 53 to fall down or scatter. The

outward extensions

54, 55 are positioned outward in the vehicle width direction from the outer diameter D1 of the fan 44 of the radiator 41. This makes it difficult for the peripheries of the outer projecting

portions

54 and 55 to be affected by the exhaust air from the fan 44, and makes it easy to control dripping and scattering of water.

The bottom cover 40 includes left and right extending

portions

58, 59 extending rearward from the rear end of the first range H1. The left and

right side portions

57b, 57c of the under cover 40, which are located on the vehicle width direction outer sides of the cover lower surface portion 57, are inclined so as to be located on the upper side as they go to the left and right outer sides, respectively. The left and

right side portions

57b, 57c are provided over the front and rear ends of the cover including the left and right extending

portions

58, 59, respectively.

Referring also to fig. 4, the left extension portion 54 includes a first left extension portion 75, a second left extension portion 76, and a third left extension portion 77.

The first left extension portion 75 extends in the vehicle width direction between the central protruding portion 53 and the left extension portion 58 on the left side of the rear end portion of the central protruding portion 53.

The second left projecting portion 76 extends obliquely downward in bottom view so as to be located further forward as it goes further outward in the vehicle width direction from the left end portion of the first left projecting portion 75. The second left projecting portion 76 extends so as to wrap around from the cover lower surface portion 57 to the cover left side portion 57 b.

The third left projecting portion 77 extends obliquely downward in bottom view so as to be positioned further rearward as it goes further outward in the vehicle width direction from the left end portion of the second left projecting portion 76. The second left projecting portion 76 and the third left projecting portion 77 project outward from the cover on the cover left side portion 57 b.

The second left extension portion 76 and the third left extension portion 77 are bent and connected in a V-shape protruding toward the front of the vehicle in a bottom view.

The vehicle-width-direction outer side portion (third left projecting portion 77) of the left projecting portion 54 is provided at a position (a position different in the vehicle front-rear direction) that is offset rearward with respect to the projecting edge line portion 72 of the central projecting portion 53. The third left projecting portion 77 is provided in a shape (inclined shape) different from the projecting ridge line portion 72 in a bottom view. Similarly, the second left projecting portion 76 is also offset rearward with respect to the projecting ridge line portion 72 of the central projecting portion 53, and is provided in a different shape (inclined shape) in a bottom view. The first left projecting portion 75 is provided offset rearward with respect to the projecting ridge line portion 72 of the central projecting portion 53.

The left extension 54 is located forward of the

intake ports

27 and 28 of the transmission case 21 and the air cleaner 22 provided on the left side of the vehicle body. By appropriately setting the position and shape of at least the outer portion (third left protruding portion 77) of the left protruding portion 54 for each

intake port

27, 28 of the vehicle functional component, splash of water to each

intake port

27, 28 can be easily suppressed. The side stand 36 is disposed on the left side of the vehicle body, and water splashing on the base end portion (movable portion) of the side stand 36 can be suppressed by the left protruding portion 54 located in front of the side stand 36. The left protruding portion 54 has a V-shaped bent shape in a bottom view as if it were to avoid the base end portion of the side stand 36.

Referring also to fig. 5, the right extending portion 55 includes a first right extending portion 81, a second right extending portion 82, and a third right extending portion 83.

The first right projecting portion 81 extends in the vehicle width direction between the center projecting portion 53 and the right extending portion 59 on the right side of the rear end portion of the center projecting portion 53.

The second right extension 82 extends rearward from the right end of the first right extension 81 along the inner edge of the right extension 59 on the inside in the vehicle width direction.

The third right projecting portion 83 extends outward in the vehicle width direction from the rear end portion of the second right projecting portion 82. The third right projecting portion 83 extends so as to go around from the cover lower surface portion 57 to the cover right side portion 57 c. The third right projecting portion 83 projects outward from the cover at the cover right side portion 57 c.

The right protruding portion 55 is formed by connecting a first right protruding portion 81, a second right protruding portion 82, and a third right protruding portion 83 in a bent shape in a bent state in a bottom view.

The vehicle-width-direction outer side portion (third right projecting portion 83) of the right projecting portion 55 is provided at a position (a position different in the vehicle front-rear direction) that is offset rearward with respect to the projecting ridge line portion 72 of the central projecting portion 53. Similarly, the first right projecting portion 81 is also provided so as to be offset rearward with respect to the projecting ridge line portion 72 of the central projecting portion 53. The second right projecting portion 82 is located rearward of the projecting edge line portion 72 of the central projecting portion 53, and is provided in a linear shape orthogonal to the projecting edge line portion 72 of the central projecting portion 53.

The right protruding portion 55 is located forward of the exhaust pipe 37 provided on the right side of the vehicle body (see fig. 2). In the exhaust pipe 37, by appropriately setting the position and shape of at least the outer portion (third right projecting portion 83) of the right projecting portion 55, splashing of water to the exhaust pipe 37 can be easily suppressed. The right protruding portion 55 extends further rearward than the pivot shaft 29 located rearward of the center protruding portion 53. The third right projecting portion 83 is located rearward of the pivot shaft 29. This allows the third right extension 83 to be as close to the exhaust pipe 37 as possible, and facilitates control of water splashing into the exhaust pipe 37.

As described above, the saddle-ride type vehicle according to the above embodiment is the motorcycle 1 including the under cover 40 covering the lower surface of the vehicle body, and the under cover 40 includes the central protruding portion 53 protruding downward at the rear portion of the first range H1 on the inside in the vehicle width direction. The left and right outer extending

portions

54, 55 are provided in a second range H2 located outside the first range H1 in the vehicle width direction, and the left and right outer extending

portions

54, 55 are projecting portions projecting downward, and extend outward in the vehicle width direction so as to be continuous with the vehicle width direction outer side of the central projecting portion 53. The outer side portions (third left projecting portion 77, third right projecting portion 83) of the outer projecting

portions

54, 55 are provided so as to change the position in the vehicle longitudinal direction with respect to the projecting edge line portion 72 of the center projecting portion 53.

According to this configuration, in the first range H1 on the vehicle width direction inner side of the under cover 40, the water droplets flowing on the lower surface of the under cover 40 are caused to fall or scatter by the center protruding portion 53 of the cover rear portion. The water that has turned around to the outside in the vehicle width direction of the central protruding portion 53 is caused to drip or scatter by the outside protruding

portions

54, 55 that are continuous with the outside in the vehicle width direction of the central protruding portion 53. The outer projecting

portions

54, 55 have outer portions that change the position in the vehicle longitudinal direction with respect to the center projecting portion 53, and therefore, the following effects are exhibited. That is, the center protrusion 53 defines a water removal position on the inner side in the vehicle width direction. The positions of the

outer extensions

54 and 55 for dripping or scattering water are set independently of the front-rear direction position of the central protrusion 53. Therefore, water removal performance at the rear end portion of the under cover 40 can be ensured, and water splashing to vehicle components arranged on the vehicle width direction outer side can be suppressed.

In the saddle-ride type vehicle according to the above embodiment, the outer projecting

portions

54 and 55 are provided on both sides in the vehicle width direction with respect to the central projecting portion 53.

According to this configuration, the

outer extensions

54 and 55 are provided on both sides (left and right sides) in the vehicle width direction, thereby providing the following effects. That is, water can be dropped or scattered at appropriate positions for different vehicle components arranged on the outer sides in the vehicle width direction. Therefore, water splashing to vehicle components disposed on the vehicle width direction outer side can be further suppressed.

In the saddle-ride type vehicle according to the above embodiment, the outer portions of the outer extending

portions

54 and 55 on both sides in the vehicle width direction are displaced rearward from the central protruding portion 53.

According to this configuration, water that has been turned around to the outside of the central projecting portion 53 in the vehicle width direction during vehicle travel flows rearward of the central projecting portion 53, but this water is easily caught by the outer projecting

portions

54, 55. Therefore, water splashing to vehicle components disposed on the vehicle width direction outer side can be further suppressed. In the embodiment, both the outer portions (the third left projecting portion 77 and the third right projecting portion 83) of the left and right outer projecting

portions

54 and 55 are displaced rearward from the central projecting portion 53, but only one of them may be displaced rearward.

In the saddle-ride type vehicle according to the above embodiment, a radiator 41 is provided above the front portion of the first range H1 of the under cover 40, and the radiator 41 has a fan 44. The bottom cover 40 includes an air guide portion 56 that guides the discharge air from the radiator 41 downward of the bottom cover 40 from the front to the rear of the first range H1 and then flows rearward. The central protruding portion 53 is provided to be wider in the vehicle width direction than the outer diameter D1 of the fan 44 of the radiator 41.

According to this configuration, the discharge air from the radiator 41 flows rearward through the air guide portion 56 provided in the first range H1. The width of the discharge air from the radiator 41 substantially depends on the outer diameter D1 of the fan. By providing the central protruding portion 53 to be wider than the outer diameter D1 of the fan, the flow of water associated with the discharge air from the radiator 41 is easily blocked by the central protruding portion 53. Therefore, the water removal performance in the first range H1 of the undercover 40 can be satisfactorily ensured.

In the saddle-ride type vehicle according to the above embodiment, the air guide portion 56 includes the ridge 84 extending in the vehicle front-rear direction and having a rear end connected to the central protruding portion 53.

According to this configuration, the air discharged from the radiator 41 is rectified to reach the center protrusion 53 by the ribs 84 extending in the vehicle front-rear direction, and therefore, the following effects are obtained. That is, since the discharge air from the radiator 41 smoothly flows to the central protruding portion 53, the flow of water accompanying the discharge air from the radiator 41 is easily blocked by the central protruding portion 53. Therefore, the water-removing property in the first range H1 of the undercover 40 can be satisfactorily ensured.

In the saddle-ride type vehicle according to the above embodiment, the

outer extensions

54 and 55 are positioned on the vehicle width direction outer side of the outer diameter D1 of the fan 44 of the radiator 41.

With this configuration, the periphery of the outer protruding

portions

54 and 55 is less likely to be affected by the exhaust air from the radiator 41. Therefore, the dripping or scattering of water by the

outer overhang portions

54 and 55 can be easily controlled, and the scattering of water to vehicle components disposed on the vehicle width direction outer side can be further suppressed.

In the saddle-ride type vehicle of the above embodiment, the exhaust pipe 37 of the power unit 20 is provided on one side (left side) in the vehicle width direction. The left outer projecting portion 54 on the one side in the vehicle width direction is located forward of the exhaust pipe 37.

According to this configuration, the outer extension portion 54 disposed on one side in the vehicle width direction is positioned in front of the exhaust pipe 37 disposed on the same one side in the vehicle width direction, and therefore water splashing into the exhaust pipe 37 can be favorably suppressed.

The straddle-type vehicle according to the above embodiment includes a swing arm (transmission case 21) whose front end side is swingably supported by the vehicle frame 11 via a pivot shaft 29 and whose rear end side supports the rear wheel 4. The pivot shaft 29 is located rearward of the center protruding portion 53, and the left outer projecting portion 54 on the one side in the vehicle width direction is located rearward of the pivot shaft 29.

According to this configuration, the outer projecting portion 54 disposed on one side in the vehicle width direction is located more rearward than the pivot shaft 29 located rearward of the central projecting portion 53. In this way, the outer projecting portion 54 is displaced rearward of the central projecting portion 53 to come close to the exhaust pipe 37, and therefore splashing of water to the exhaust pipe 37 can be suppressed satisfactorily.

In the saddle-ride type vehicle of the above embodiment, the

intake ports

27, 28 of the power unit 20 are provided on the other side (right side) in the vehicle width direction with respect to the one side in the vehicle width direction. The right outer extension 55 on the other side in the vehicle width direction is located forward of the

air inlets

27, 28.

According to this configuration, the outer extension 55 disposed on the other side in the vehicle width direction is positioned forward of the

intake ports

27, 28 disposed on the other side in the same vehicle width direction. Therefore, splashing of water to the

intake ports

27 and 28 can be suppressed satisfactorily.

In the saddle-ride type vehicle according to the above embodiment, a side stand 36 for supporting the vehicle body in an inclined posture is provided at the other side in the vehicle width direction and in a position forward of the air intakes 27, 28. The outer projecting portion 55 on the other side in the vehicle width direction is formed in a V shape projecting toward one side in the vehicle front-rear direction.

According to this configuration, the outer projecting portion 55 disposed on the other side in the same vehicle width direction is bent in a V shape with respect to the side jiffy stand 36 disposed on the other side in the vehicle width direction, and therefore, the following effects are exhibited. That is, the outer projecting portion 55 is bent so as to avoid the movable range of the side stand 36, and thereby a gap between the side stand 36 and the outer projecting portion 55 can be secured.

The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are considered within the technical scope thereof.

For example, the bottom cover 40 of the embodiment is integrally formed of synthetic resin or the like, but is not limited thereto, and may be formed of a plurality of members or may be divided.

The vehicle to which the present invention is applied includes not only a motorcycle (including a bicycle with a prime mover and a scooter type vehicle), but also a tricycle (including a vehicle with two front wheels and one rear wheel, in addition to a vehicle with two front wheels and two rear wheels) or a four-wheeled vehicle.

The configuration of the above embodiment is an example of the present invention, and the components of the embodiment may be replaced with known components, and various changes may be made without departing from the scope of the present invention.

Description of the symbols:

1. motor bicycle (straddle type vehicle)

4. Rear wheel

11. Vehicle frame

20. Power unit

21. Transmission case (swing arm)

27. 28 air inlet

29. Pivot shaft

36. Side parking frame

37. Exhaust pipe

40. Bottom cover

41. Heat radiator

44. Fan (Ref. TM. Fan)

53. Center protrusion

54. 55 outer extension

56. Air guide part

84. Projection (projection shape part)

D1 Outer diameter

H1 First range

H2 Second range

Claims

1. A saddle-ride type vehicle (1) having a undercover (40) covering a lower surface of a vehicle body,

the under cover (40) has a central protrusion (53) protruding downward in a first range (H1) on the inside in the vehicle width direction,

an outer protruding portion (54, 55) is provided in a second range (H2) that is outside the first range (H1) in the vehicle width direction, the outer protruding portion (54, 55) being a protruding portion that protrudes downward and that extends outward in the vehicle width direction in connection with the vehicle width direction outer side of the central protruding portion (53),

the outer side portions of the outer protruding portions (54, 55) are provided so as to change the position in the vehicle longitudinal direction with respect to the center protruding portion (53).

2. The straddle-type vehicle according to claim 1,

the outer projecting portions (54, 55) are provided on both sides in the vehicle width direction with respect to the central projecting portion (53).

3. The straddle-type vehicle according to claim 2,

at least one of outer portions of the outer projecting portions (54, 55) on both sides in the vehicle width direction is displaced rearward from the central projecting portion (53).

4. The straddle-type vehicle according to any one of claims 1 to 3,

a heat sink (41) is provided above the first range (H1) of the bottom cover (40), the heat sink (41) has a fan (44),

the bottom cover (40) is provided with an air guide part (56) which guides the exhaust air from the radiator (41) to the lower part of the bottom cover (40) from the front part to the rear part of the first range (H1) and then makes the exhaust air flow backwards,

the central protrusion (53) is provided to be wider in the vehicle width direction than the outer diameter of the fan (44) of the radiator (41).

5. The straddle-type vehicle according to claim 4,

the air guide portion (56) is provided with a protruding shape portion (84) that extends in the vehicle front-rear direction and has a rear end connected to the central protruding portion (53).

6. The straddle-type vehicle according to claim 4,

the outer protruding portions (54, 55) are located on the vehicle width direction outer side of the outer diameter of the fan (44) of the radiator (41).

7. The straddle-type vehicle according to any one of claims 1 to 3,

the saddle-ride type vehicle is provided with an exhaust pipe (37) of a power unit (20) at one side in the vehicle width direction,

the outer projecting portion (54) on one side in the vehicle width direction is located in front of the exhaust pipe (37).

8. The straddle-type vehicle according to claim 7,

the straddle-type vehicle is provided with a swing arm (21) having a front end side swingably supported by a frame (11) via a pivot (29) and a rear end side supporting a rear wheel (4),

the pivot shaft (29) is located rearward of the center protrusion (53),

the outer protruding portion (54) on one side in the vehicle width direction is located rearward of the pivot shaft (29).

9. The straddle-type vehicle according to claim 7,

the saddle-ride type vehicle is provided with air inlets (27, 28) of a power unit (20) on the other side in the vehicle width direction relative to one side in the vehicle width direction,

the outer projecting portion (55) on the other side in the vehicle width direction is located forward of the air inlets (27, 28).

10. The straddle-type vehicle according to claim 9,

the saddle-ride type vehicle is provided with a side jiffy stand (36) which supports the vehicle body in an inclined posture at the other side in the vehicle width direction and at a position closer to the front than the air inlets (27, 28),

the outer extension portion (55) on the other side in the vehicle width direction is formed in a V shape protruding toward one side in the vehicle front-rear direction.