JP2023144782A - Straddle type vehicle - Google Patents

Abstract

To prevent splashing of water flowing along an undercover and to reduce noise caused by traveling wind.SOLUTION: A straddle type vehicle comprises an undercover (40) covering a vehicle body from below between a front wheel and a rear wheel, the undercover (40) including a water drip rib (53) protruding downward from a lower surface of the undercover (40) and extending in a vehicle forward and downward directions. The undercover (40) includes a front portion (52) overlapping the water drip rib (53), as viewed from a front side of the vehicle.SELECTED DRAWING: Figure 4

Description

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

Conventionally, a saddle-ride type vehicle has been provided with an undercover that covers the vehicle body from below between the front wheels and the rear wheels, and the undercover has a drainage rib that projects downward from the lower surface of the undercover and extends in the longitudinal direction of the vehicle. known (for example, see Patent Document 1). According to Patent Document 1, water flowing along the undercover can be prevented from being splashed up by the draining rib.

Japanese Patent Application Publication No. 2011-31750

However, in the conventional saddle type vehicle described above, noise may be generated by the wind flowing along the draining rib.
The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to suppress splashing of water flowing along an undercover and to reduce noise caused by running wind.

The saddle type vehicle includes an undercover that covers the vehicle body from below between the front wheels and the rear wheels, and the undercover has a draining rib that projects downward from the lower surface of the undercover and extends in the longitudinal direction of the vehicle. In the saddle-ride type vehicle, the undercover includes a front portion that overlaps the draining rib from the front of the vehicle when viewed from the front of the vehicle.

In a saddle-ride type vehicle, splashing of water flowing along an undercover can be suppressed, and noise caused by running wind can be reduced.

1 is a side view of a saddle-ride type vehicle according to an embodiment of the present invention. FIG. 2 is a perspective view of the saddle type vehicle seen from below. FIG. 3 is a plan view of the undercover viewed from below. It is a perspective view which expands and shows the front end part of an undercover. It is a top view which shows the peripheral part of the rear part of the left side draining rib. It is a top view which shows the peripheral part of the rear part of the right side draining rib.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in the description, directions such as front, rear, left, right, and top and bottom are the same as directions with respect to the vehicle body unless otherwise specified. Further, the symbol FR shown in each figure indicates the front of the vehicle body, the symbol UP indicates the upper side of the vehicle body, and the symbol LH indicates the left side of the vehicle body.

[Embodiment]
FIG. 1 is a side view of a saddle-ride type vehicle 10 according to an embodiment of the present invention.
The saddle type vehicle 10 includes a body frame 11, a power unit 12 supported by the body frame 11, a front fork 14 that supports a front wheel 13 in a steerable manner, a swing arm 16 that supports a rear wheel 15, and a seat for a passenger. The vehicle is equipped with a seat 17.
The saddle type vehicle 10 is a vehicle in which a passenger is seated astride a seat 17. The seat 17 is provided above the rear part of the vehicle body frame 11.

The vehicle body frame 11 includes a head pipe 18 provided at the front end of the vehicle body frame 11, a front frame 19 located behind the head pipe 18, and a rear frame 20 located behind the front frame 19. A front end of the front frame 19 is connected to the head pipe 18.
The seat 17 is supported by the rear frame 20.

The front fork 14 is supported by a head pipe 18 so as to be steerable left and right. The front wheel 13 is supported by an axle 13a provided at the lower end of the front fork 14. A steering handle 21 held by a passenger is attached to the upper end of the front fork 14.

The swing arm 16 is supported by a pivot shaft 22 supported by the vehicle body frame 11. The pivot shaft 22 is a shaft that extends horizontally in the vehicle width direction. A pivot shaft 22 is inserted through the front end of the swing arm 16 . The swing arm 16 swings up and down about a pivot shaft 22.
The rear wheel 15 is supported by an axle 15a provided at the rear end of the swing arm 16.

The power unit 12 is disposed between the front wheels 13 and the rear wheels 15 and is supported by the vehicle body frame 11.
Power unit 12 is an internal combustion engine. The power unit 12 includes a crankcase 23 and a cylinder portion 24 that accommodates a reciprocating piston. An exhaust device 25 is connected to the exhaust port of the cylinder portion 24 .
The output of the power unit 12 is transmitted to the rear wheels 15 by a driving force transmission member that connects the power unit 12 and the rear wheels 15.

The saddle type vehicle 10 also includes a front fender 26 that covers the front wheels 13 from above, a rear fender 27 that covers the rear wheels 15 from above, a step 28 on which the rider rests his/her feet, and a fuel tank that stores fuel used by the power unit 12. A tank 29 is provided.
The front fender 26 is attached to the front fork 14. The rear fender 27 and the step 28 are provided below the seat 17. The fuel tank 29 is supported by the vehicle body frame 11.

FIG. 2 is a perspective view of the saddle-ride type vehicle 10 viewed from below.
Referring to FIGS. 1 and 2, saddle-ride type vehicle 10 is a motorcycle.
The power unit 12 is a unit swing engine in which the internal combustion engine and the swing arm 16 are integrally provided. The front frame 19 is located in front of the power unit 12. The rear frame 20 is located above the power unit 12.
The front frame 19 includes a down frame 19a extending downward from the head pipe 18, and a lower frame 19b extending rearward from the bottom of the down frame 19a.
A rear cushion 30 is stretched between the rear end of the swing arm 16 and the rear part of the rear frame 20.

The saddle type vehicle 10 includes an air cleaner box 31 that takes in outside air and purifies it. The air cleaner box 31 uses a filter to purify outside air taken in from an intake port 31a provided in the air cleaner box 31, and supplies the purified outside air to the cylinder portion 24 as intake air.
The air cleaner box 31 is attached to the upper surface of the swing arm 16 at the rear of the cylinder portion 24, and is arranged on one side (left side) of the rear wheel 15 located at the center of the vehicle width. The air cleaner box 31 overlaps the upper part of the rear wheel 15 from the outside in the vehicle width direction when viewed from the side of the vehicle.
The muffler 25a of the exhaust system 25 is disposed outside the rear wheel 15 on the other left and right side (right side).

The saddle-ride type vehicle 10 includes a side stand 32 that supports the saddle-ride type vehicle 10 in a state tilted to the left, and a main stand 33 that supports the saddle-ride type vehicle 10 in an upright state.
The side stand 32 is attached to the rear frame 20 in front of the power unit 12.
The main stand 33 is attached to the lower surface of the crankcase 23 and is located below the air cleaner box 31.

The saddle-ride type vehicle 10 includes a vehicle body cover 35 that covers a vehicle body such as the vehicle body frame 11.
The vehicle body cover 35 includes a front cover 36 that covers the head pipe 18 and the front fork 14 from the front, an inner cover 37 that covers the head pipe 18 and the front fork 14 from the rear, and a body cover 35 that covers the vehicle body from the side below the inner cover 37 and the seat 17. and a side cover 38 that covers from the inside.
The vehicle body cover 35 also includes a lower cover 39 that is below the side cover 38 and covers the lower part of the vehicle body from the side, and an undercover 40 that is below the lower cover 39 and covers the vehicle body from below.

The undercover 40 is arranged between the front wheel 13 and the rear wheel 15 in the vehicle longitudinal direction. The undercover 40 is arranged in front of the crankcase 23 and covers the lower frame 19b and the fuel tank 29 from below. Further, the undercover 40 is arranged forward of the main stand 33 and the air cleaner box 31. The undercover 40 is arranged below the step 28 and the air cleaner box 31.

FIG. 3 is a plan view of the undercover 40 viewed from below.
In plan view, the undercover 40 has a plate shape that extends longer in the vehicle longitudinal direction than in the vehicle width direction.
The undercover 40 includes a lower wall portion 41 that covers the lower frame 19b, fuel tank 29, etc. from below, a front wall portion 42 extending upward from the front edge of the lower wall portion 41, and left and right portions of the lower wall portion 41. It includes a pair of left and right side walls 43 extending upward from the side edges.

The lower wall portion 41 has a plate shape and is arranged with its thickness direction oriented in the up-down direction.
The lower wall portion 41 includes a flat base portion 50, a pair of left and right step portions 51 located on the outside in the vehicle width direction with respect to the base portion 50, and a pair of left and right convex portions 52 provided in front of each step portion 51. Equipped with
The undercover 40 also includes a pair of left and right draining ribs 53 that protrude downward from the lower surface of the lower wall portion 41 .

FIG. 4 is an enlarged perspective view of the front end portion of the undercover 40. As shown in FIG.
Referring to FIGS. 3 and 4, the base portion 50 is a plate-shaped portion that constitutes most of the lower wall portion 41, and is disposed at the center of the vehicle width.
The step portions 51 are provided on the left and right side edges of the lower wall portion 41, respectively. The stepped portion 51 is a portion where the lower surface of the lower wall portion 41 is recessed upward relative to the base portion 50. The stepped portion 51 continuously extends linearly in the longitudinal direction of the vehicle from the front portion to the rear portion of the lower wall portion 41.

Specifically, the stepped portion 51 is an inclined surface extending outward and upward in the vehicle width direction from the outer edge 50a of the base portion 50 in the vehicle width direction (left and right direction). The step portion 51 is inclined so as to be located upward as it goes outward in the vehicle width direction from the outer edge 50a. The depth of the stepped portion 51 increases toward the outside in the vehicle width direction.

The draining rib 53 is formed on the stepped portion 51. The draining rib 53 is a wall portion that projects downward from the lower surface of the stepped portion 51.
The draining rib 53 extends downward from the outer end of the stepped portion 51 in the vehicle width direction. Further, the draining rib 53 is located at the outer end of the lower wall portion 41 in the vehicle width direction.
The draining rib 53 extends continuously from the front to the rear of the lower wall portion 41 in a straight line in the longitudinal direction of the vehicle.

The convex portion 52 is provided at the front end of the lower wall portion 41 . The convex portion 52 is continuous with the front end of the stepped portion 51 and is provided in front of the stepped portion 51 . The convex portion 52 projects downward from the stepped portion 51.
Specifically, the convex portion 52 includes a convex rear surface portion 55 (rear surface portion) extending downward from the front end of the stepped portion 51 and a convex lower surface portion 56 (lower surface portion) extending forward from the lower end of the convex rear surface portion 55. , a lower end of the convex portion), a convex front surface portion 57 extending upward from the front end of the convex lower surface portion 56, and a convex side surface portion extending upward from the outer end of the convex lower surface portion 56 in the vehicle width direction. 58.

The convex lower surface portion 56 is located on the outer side of the front end portion 50b of the base portion 50 in the vehicle width direction. The convex lower surface portion 56 has a flat plate shape that is continuous with the front end portion 50b of the base portion 50. The convex lower surface portion 56 and the front end portion 50b of the base portion 50 are flush with each other, and the convex portion 52 does not protrude downward with respect to the base portion 50.
The convex front portion 57 is formed by the lower part of the outer end in the vehicle width direction of the front wall portion 42, and constitutes a part of the front surface of the undercover 40. In plan view, the convex front portion 57 is inclined so as to be positioned toward the rear as it goes outward in the vehicle width direction.
The convex side surface portion 58 is formed by the lower part of the front end of the side wall portion 43 .

The convex portion 52 is a front portion disposed in front of the draining rib 53. When viewed from the front of the vehicle, the convex portion 52 overlaps the draining rib 53 from the front of the vehicle.
The front end 53a of the draining rib 53 is connected to the outer end in the vehicle width direction of the rear surface portion 55 of the convex portion. The outer surface of the draining rib 53 is flush with the outer surface of the convex side surface portion 58 and the outer surface of the side wall portion 43 . When viewed from the front of the vehicle, the front end 53a is hidden by the convex portion 52. The width of the draining rib 53 in the vehicle width direction is smaller than the width of the convex portion 52 in the vehicle width direction.
The lower end 53b of the draining rib 53 is located above the convex lower surface portion 56, which is the lower end of the convex portion 52.

The front end portion 50b of the base portion 50 is provided with a plurality of front fixing portions 59 that are fixed to the vehicle body.
The rear end portion 50c of the base portion 50 is provided with a plurality of rear fixing portions 60 that are fixed to the vehicle body.
The undercover 40 is fastened to, for example, the vehicle body frame 11 by fasteners (not shown) inserted through the front fixing part 59 and the rear fixing part 60.

A vent hole 61 is provided at the front portion of the base portion 50, passing through the base portion 50 in the vertical direction. The vent 61 is a long hole that extends in the vehicle width direction between the left and right draining ribs 53.

FIG. 5 is a plan view showing the rear peripheral part of the left draining rib 53.
In the following description, in order to distinguish between the left and right draining ribs 53, the left side draining rib 53 may be referred to as a draining rib 53L, and the right side draining rib 53 may be referred to as a draining rib 53R.
Referring to FIGS. 3 and 5, the lower surface of the undercover 40 is provided with an inner rib 63 and an outer rib 64 that are connected to the rear end portion 53c of the draining rib 53L.

The inner rib 63 and the outer rib 64 are wall portions that protrude downward from the rear portion of the lower wall portion 41 .
In plan view, the inner rib 63 extends obliquely rearward and inward in the vehicle width direction from the rear end portion 53c.
In plan view, the outer rib 64 extends obliquely rearward and outward in the vehicle width direction from the rear end portion 53c.
The draining rib 53L, the inner rib 63, and the outer rib 64 are arranged offset to the left side and the outer side in the vehicle width direction with respect to the center of the vehicle width.

The lower end 63a of the inner rib 63 is the apex of the inner rib 63. The front surface of the inner rib 63 is a first rear inclined surface 63c that connects the base end 63b and the lower end 63a of the inner rib 63 located in front of the lower end 63a.
The first rear inclined surface 63c is inclined so as to be located downward as it goes rearward from the base end 63b. The first rear inclined surface 63c is a rearwardly downward inclined surface when viewed from the side of the vehicle. The first rear inclined surface 63c is arranged on the inside in the vehicle width direction with respect to the rear end portion 53c.

FIG. 6 is a plan view showing the rear peripheral part of the right draining rib 53R.
3 and 6, the lower surface of the undercover 40 includes a vehicle width direction rib 65 connected to the rear end portion 53d of the draining rib 53R, and a longitudinal direction rib 66 connected to the vehicle width direction rib 65. , and a second vehicle width direction rib 67 connected to the longitudinal direction rib 66.
The draining rib 53R extends further rearward than the draining rib 53L, and the rear end portion 53d is located rearward than the rear end portion 53c.

The vehicle width direction rib 65, the longitudinal direction rib 66, and the second vehicle width direction rib 67 are wall portions that protrude downward from the rear portion of the lower wall portion 41.
In plan view, the vehicle width direction rib 65 extends inward in the vehicle width direction from the rear end portion 53d. The vehicle width direction rib 65 extends in a direction perpendicular to the vehicle longitudinal direction.
In plan view, the longitudinal rib 66 extends forward from the inner end of the vehicle width direction rib 65 in the vehicle width direction. In plan view, the longitudinal rib 66 is arranged substantially perpendicular to the vehicle width direction rib 65.
In plan view, the second vehicle width direction rib 67 extends inward in the vehicle width direction from the front end of the longitudinal direction rib 66. The outer end 67a in the vehicle width direction of the second vehicle width direction rib 67 is inclined so as to be positioned toward the rear as it goes outward in the vehicle width direction in plan view.
The draining rib 53R, the vehicle width direction rib 65, the longitudinal direction rib 66, and the second vehicle width direction rib 67 are arranged offset to the right side and the outside in the vehicle width direction with respect to the center of the vehicle width.

The lower end portion 65a of the vehicle width direction rib 65 is the apex portion of the vehicle width direction rib 65. The front surface of the vehicle widthwise rib 65 is a second rear inclined surface 65c that connects the base end 65b and the lower end 65a of the vehicle widthwise rib 65 located in front of the lower end 65a.
The second rear inclined surface 65c is inclined so as to be located downward as it goes rearward from the base end 65b. The second rear inclined surface 65c is a rearwardly downward inclined surface when viewed from the side of the vehicle. The second rear inclined surface 65c is arranged on the inside in the vehicle width direction with respect to the rear end portion 53d.

Here, the flow of water and the flow of running wind regarding the undercover 40 will be explained.
Referring to FIGS. 3 and 4, when the saddle-ride type vehicle 10 runs, for example, in a puddle on the road surface, water is splashed up from the front wheels 13 and adheres to the lower surface of the undercover 40, and this water is removed from the undercover. It flows rearwardly and laterally along the lower surface of 40.
The water W1 flowing outward flows outward along the base portion 50 and the stepped portion 51, and then hits the inner surface of the draining rib 53, and is guided by the draining rib 53 and falls downward. This suppresses water W1 flowing along the lower surface of the undercover 40 from splashing up from the undercover 40 outward in the vehicle width direction.

A part of the driving wind A flowing toward the undercover 40 from the front hits the convex front part 57 of the convex part 52 and flows outward and rearward in the vehicle width direction along the convex front part 57. Further, another part of the traveling wind A flows toward the rear of the convex portion 52 along the lower surface of the lower wall portion 41 including the convex lower surface portion 56 .
In the undercover 40, since the convex portion 52 overlaps the draining rib 53 from the front of the vehicle, the traveling wind A hits the convex portion 52 and the airflow of the traveling wind A is moderately disturbed, thereby suppressing the direct contact of the traveling wind A with the draining rib 53. be done. Thereby, the running wind A is prevented from flowing forcefully along the draining rib 53, and the wind noise caused by the running wind A can be reduced.

A front end 53a of the draining rib 53 is connected to a rear surface portion 55 of the convex portion. Therefore, the running wind A is prevented from directly hitting the front end 53a of the draining rib 53, and the noise caused by the running wind A can be reduced. Furthermore, since the front end 53a is connected to the rear surface portion 55 of the convex portion, there is no gap between the convex portion 52 and the draining rib 53 in the vehicle longitudinal direction. Therefore, it is possible to prevent noise from being generated by the traveling wind A passing through the gap, and the rigidity of the draining rib 53 can be increased.

The lower end 53b of the draining rib 53 is located above the convex lower surface portion 56, which is the lower end of the convex portion 52, and is recessed upward with respect to the convex portion 52.
Thereby, the running wind A is prevented from directly hitting the lower end 53b of the draining rib 53, and the generation of noise due to the running wind A can be suppressed.

Further, by providing the convex portion 52, the running wind A is prevented from flowing strongly in the longitudinal direction of the vehicle along the draining rib 53. Thereby, it is possible to suppress the running wind A from becoming a resistance to the operation of banking the saddle-ride type vehicle 10 in the left-right direction, and it is possible to easily turn the saddle-ride type vehicle 10.

Referring to FIGS. 2, 3, and 5, the draining rib 53L, the inner rib 63, and the outer rib 64 are arranged offset toward the air cleaner box 31 in the left-right direction centering on the rear wheel 15. . That is, the air cleaner box 31 is arranged almost directly behind the draining rib 53L, the inner rib 63, and the outer rib 64.
Further, a part of the main stand 33 is located below the air cleaner box 31 and almost directly behind the draining rib 53L, the inner rib 63, and the outer rib 64.

Referring to FIG. 5, water W2 flowing rearward along the outer surface of the draining rib 53 hits the outer rib 64 at the rear of the rear end 53c of the draining rib 53L, and flows backward and outward along the outer rib 64 in the vehicle width direction. flows to

Water W3 flowing rearward along the inner surface of the draining rib 53 hits the inner rib 63 behind the rear end 53c of the draining rib 53L, and flows rearward and inward in the vehicle width direction along the inner rib 63.
In this way, water flowing rearward along the draining rib 53 is guided by the outer rib 64 and the inner rib 63 to flow outward in the vehicle width direction and inward in the vehicle width direction. Therefore, water flowing backward along the draining rib 53 is suppressed from flowing directly behind the draining rib 53.

When water flows directly behind the draining rib 53, a portion of this water may enter the air intake port 31a of the air cleaner box 31. For example, a portion of the water flowing directly behind from the draining rib 53 may hit the main stand 33 and be repelled upward, potentially entering the intake port 31a.
In the undercover 40, the outer ribs 64 and the inner ribs 63 prevent water flowing backward along the draining ribs 53 from flowing directly behind the draining ribs 53, so that water can be prevented from entering the intake port 31a.
Specifically, FIG. 5 shows an inner extension line 63d that extends the inner rib 63 rearward, and an outer extension line 64a that extends the outer rib 64 rearward. The intake port 31a (FIG. 1) is arranged behind the outer rib 64 and the inner rib 63 in a region between the inner extension line 63d and the outer extension line 64a. Therefore, water flowing backward along the draining rib 53 can be prevented from heading toward the intake port 31a.

A portion of the water W3 flows rearward and inward in the vehicle width direction along the first rear inclined surface 63c of the inner rib 63, and flows rearward over the lower end 63a. Since the first rear inclined surface 63c is inclined backwardly, a part of the water W3 falls backward and downward along the first rear inclined surface 63c. Therefore, water flowing rearward from the inner rib 63 can be prevented from going upward, and water can be prevented from reaching the air cleaner box 31.

Further, a portion of the traveling air flowing rearward along the lower surface of the undercover 40 flows rearward along the inner rib 63. This running wind, like the water W3, flows rearward and downward along the first rear inclined surface 63c that slopes backward. Therefore, the traveling wind can pass through the inner rib 63 smoothly, and the air resistance of the saddle-ride type vehicle 10 can be reduced. For example, if the front surface of the inner rib 63 protrudes perpendicularly from the lower surface of the undercover 40, the resistance to the traveling wind increases.

2, 3, and 6, the draining rib 53R, the vehicle width direction rib 65, the longitudinal direction rib 66, and the second vehicle width direction rib 67 are arranged in the muffler in the left and right direction centering on the rear wheel 15. It is arranged offset to the side of 25a.

Referring to FIG. 6, water W4 flowing rearward along the outer surface of the draining rib 53R flows along the draining rib 53 to the rear of the rear end portion 53d.
Further, the water W5 flowing rearward along the inner surface of the draining rib 53R flows rearward along the vehicle width direction rib 65. Since the second rear inclined surface 65c, which is the front surface of the vehicle width direction rib 65, is inclined downwardly toward the rear, the water W5 falls downwardly toward the rear along the second rear inclined surface 65c. Therefore, water flowing rearward from the vehicle width direction rib 65 can be suppressed from flowing upward.

A portion of the water W5 flows rearward along the outer surface of the longitudinal rib 66, and then falls rearward and downward along the vehicle width direction rib 65. The longitudinal rib 66 suppresses water W5 from flowing inward in the vehicle width direction.

Water W6 flowing from the front to the rear of the second vehicle width direction rib 67 through the inner side of the vehicle width direction rib 66 hits the front surface of the second vehicle width direction rib 67, and the water W6 passes through the vehicle width direction inner side of the vehicle width direction rib 66 and flows from the front to the rear of the second vehicle width direction rib 67. It flows outward in the vehicle width direction along the vehicle width direction rib 65, and then falls rearward and downward along the vehicle width direction rib 65.

Further, a portion of the traveling wind that flows rearward along the lower surface of the undercover 40 flows rearward along the vehicle width direction rib 65. This running wind, like the water W5, flows rearward and downward along the second rear inclined surface 65c that slopes downward. Therefore, the traveling wind can smoothly pass through the vehicle width direction rib 65, and the air resistance of the saddle-ride type vehicle 10 can be reduced. For example, when the front surface of the vehicle width direction rib 65 protrudes perpendicularly from the lower surface of the undercover 40, the resistance to the running wind increases.

As described above, according to the embodiment to which the present invention is applied, the saddle-ride type vehicle 10 includes an undercover 40 that covers the vehicle body frame 11 as a vehicle body from below between the front wheels 13 and the rear wheels 15. , the undercover 40 is provided with a draining rib 53 that protrudes downward from the lower surface of the undercover 40 and extends in the longitudinal direction of the vehicle; A convex portion 52 is provided as a portion.
According to this configuration, splashing of water flowing along the undercover 40 can be suppressed by the draining rib 53 extending in the longitudinal direction of the vehicle. In addition, since the convex portion 52 overlaps the draining rib 53 from the front of the vehicle, the traveling wind A from the front hits the convex portion 52 and the airflow of the traveling wind A is moderately disturbed, and the direct hitting of the traveling wind A against the draining rib 53 is suppressed. be done. Thereby, the noise caused by the running wind A flowing along the draining rib 53 can be reduced.

Further, a front end 53 a of the draining rib 53 is connected to a rear surface portion 55 of the projection portion 52 , which is a rear surface portion of the projection portion 52 .
According to this configuration, since the front end 53a of the draining rib 53 is hidden from the front by the convex rear surface portion 55, it is possible to suppress the running wind A from the front from directly hitting the draining rib 53. Therefore, the noise caused by the running wind A can be reduced.

Further, the undercover 40 includes a flat base portion 50 and a stepped portion 51 that is recessed upward with respect to the base portion 50 on the outside in the vehicle width direction with respect to the base portion 50, and the draining rib 53 extends downward from the stepped portion 51. The convex portion 52 protrudes downward from the stepped portion 51 .
According to this configuration, the draining rib 53 is provided on the stepped portion 51 that is recessed upward with respect to the flat base portion 50, so that the running wind A from the front is suppressed from directly hitting the draining rib 53. Therefore, the noise caused by the running wind A can be reduced. Further, since the draining rib 53 is provided on the step portion 51, a large distance between the draining rib 53 and the road surface can be ensured, and the minimum ground clearance of the saddle type vehicle 10 can be prevented from becoming small due to the draining rib 53.

Furthermore, the lower surface portion 56 of the convex portion 52 is a flat plate-like portion continuous with the base portion 50 .
According to this configuration, it is possible to ensure a large distance between the convex portion 52 and the road surface, and it is possible to suppress a decrease in the minimum ground clearance of the saddle-ride type vehicle 10 due to the convex portion 52.

Further, the stepped portion 51 is an inclined surface that slopes upward toward the outer side in the vehicle width direction, and the draining rib 53 projects downward from the outer end of the stepped portion 51 in the vehicle width direction.
According to this configuration, water and running wind can flow smoothly toward the draining rib 53 along the slope. Therefore, splashing of water can be effectively suppressed, and noise caused by running wind can be reduced.

Further, the lower end 53b of the draining rib 53 is located above the lower surface portion 56 of the convex portion 52, which is the lower end of the convex portion 52.
According to this configuration, the running wind A from the front can be prevented from directly hitting the draining rib 53, and the noise caused by the running wind A can be reduced.

Further, an inner rib 63 and an outer rib 64 are provided on the lower surface of the undercover 40, and the inner rib 63 is connected to the rear end 53c of the draining rib 53, and the inner rib 63 extends rearward and inward in the vehicle width direction from the rear end 53c. The outer rib 64 extends rearward and outward in the vehicle width direction from the rear end portion 53c.
According to this configuration, water flowing rearward from the draining rib 53 can be guided rearward and inward in the vehicle width direction by the inner rib 63, and can be guided rearward and outward in the vehicle width direction by the outer rib 64. Therefore, water can be prevented from being discharged directly behind the draining rib 53, and parts such as the air cleaner box 31 disposed directly behind the draining rib 53 can be protected from water.

Further, on the lower surface of the undercover 40, a vehicle width direction rib 65 connected to the rear end portion 53d of the draining rib 53 and a longitudinal direction rib 66 connected to the vehicle width direction rib 65 are provided. The rib 65 extends inward in the vehicle width direction from the rear end portion 53d, and the longitudinal rib 66 extends forward in the vehicle from the inner end in the vehicle width direction of the vehicle width direction rib 65.
According to this configuration, the front-rear rib 66 and the vehicle width-direction rib 65 can prevent water flowing rearward from the draining rib 53 from flowing inward in the vehicle width direction. Therefore, parts and the like placed inside the draining rib 53 in the vehicle width direction can be protected from water.

In addition, on the lower surface of the undercover 40, inside the rear end portions 53c and 53d of the draining rib 53 in the vehicle width direction, there is a first rear inclined surface 63c and a second rear inclined surface that are inclined to be positioned downwardly toward the rear. An inclined surface 65c is provided.
According to this configuration, the running wind flowing rearward from the draining rib 53 can be smoothly flowed rearward and downward by the first rear inclined surface 63c and the second rear inclined surface 65c, and the resistance caused by the running wind can be reduced. Further, water flowing backward from the draining rib 53 can be guided downward by the first rear inclined surface 63c and the second rear inclined surface 65c, and water can be prevented from flowing upward.

Further, an air cleaner box 31 that takes in outside air and purifies it is arranged behind the undercover 40.
According to this configuration, the direction of water flowing along the lower surface of the undercover 40 can be controlled by the draining rib 53, and water flowing backward from the undercover 40 can be prevented from hitting the air cleaner box 31.

Note that the above embodiment shows one mode to which the present invention is applied, and the present invention is not limited to the above embodiment.
In the above embodiment, the convex portion 52 is flush with the front end portion 50b of the base portion 50 and is described as protruding downward from the step portion 51, but the present invention is not limited thereto. The convex portion 52 may protrude downward from the base portion 50.
Further, in the above embodiment, a motorcycle has been described as an example of the saddle-riding vehicle 10, but the present invention is not limited to this. It is applicable to a saddle type vehicle with wheels and a saddle type vehicle with four or more wheels.

[Configuration supported by the above embodiment]
The above embodiment supports the following configurations.

(Configuration 1) A saddle that includes an undercover that covers the vehicle body from below between the front wheels and the rear wheels, and the undercover includes a draining rib that projects downward from the lower surface of the undercover and extends in the longitudinal direction of the vehicle. The saddle type vehicle is characterized in that the undercover includes a front portion that overlaps the draining rib from the front of the vehicle when viewed from the front of the vehicle.
According to this configuration, the water draining ribs extending in the longitudinal direction of the vehicle can suppress splashing up of water flowing along the undercover. Further, since the front portion overlaps the draining rib from the front of the vehicle, the wind from the front hits the front portion and the airflow of the traveling wind is appropriately disturbed, thereby suppressing the direct contact of the wind with the draining rib. Thereby, the noise caused by the running wind flowing along the draining ribs can be reduced.

(Structure 2) The saddle-ride type vehicle according to Structure 1, wherein a front end of the draining rib is connected to a rear surface of the front portion.
According to this configuration, the front end of the draining rib is hidden from the front by the rear surface portion of the front portion, so that it is possible to suppress the running wind from the front from directly hitting the draining rib. Therefore, noise caused by running wind can be reduced.

(Structure 3) The undercover includes a flat base portion, and a stepped portion recessed upward relative to the base portion on the outside in the vehicle width direction with respect to the base portion, and the draining rib is configured to extend downward from the stepped portion. 3. The saddle-ride type vehicle according to configuration 1 or 2, wherein the front portion projects downwardly with respect to the stepped portion.
According to this configuration, the draining ribs are provided at the stepped portions that are recessed upward with respect to the flat base portion, so that the running wind from the front is suppressed from directly hitting the draining ribs. Therefore, noise caused by running wind can be reduced. Further, it is possible to ensure a large distance between the draining rib and the road surface, and it is possible to suppress a decrease in the minimum ground clearance of the saddle type vehicle due to the draining rib.

(Structure 4) The saddle-ride type vehicle according to Structure 3, wherein the lower surface portion of the front portion has a flat plate shape that is continuous with the base portion.
According to this configuration, it is possible to ensure a large distance between the front part and the road surface, and it is possible to suppress a decrease in the minimum ground clearance of the saddle type vehicle due to the front part.

(Configuration 5) The stepped portion is an inclined surface that slopes upward toward the outer side in the vehicle width direction, and the draining rib protrudes downward from the outer end in the vehicle width direction of the stepped portion. The saddle-ride type vehicle according to configuration 3 or 4, characterized in that:
According to this configuration, water and running wind can flow smoothly toward the draining rib side along the inclined surface. Therefore, splashing of water can be effectively suppressed, and noise caused by running wind can be reduced.

(Structure 6) The saddle-ride type vehicle according to any one of Structures 1 to 5, wherein the lower end of the draining rib is located above the lower end of the front portion.
According to this configuration, it is possible to prevent the running wind from the front from directly hitting the draining rib, and it is possible to reduce the noise caused by the running wind.

(Structure 7) The lower surface of the undercover is provided with an inner rib and an outer rib that are connected to the rear end of the draining rib, and the inner rib extends rearward and inward in the vehicle width direction from the rear end. 7. The saddle-ride type vehicle according to any one of configurations 1 to 6, wherein the outer rib extends rearward and outward in the vehicle width direction from the rear end portion.
According to this configuration, water flowing rearward from the draining rib can be guided rearward and inward in the vehicle width direction by the inner rib, and can be guided rearward and outward in the vehicle width direction by the outer rib. Therefore, it is possible to suppress water from being discharged directly behind the draining rib, and it is possible to protect components and the like disposed directly behind the draining rib from water.

(Structure 8) The lower surface of the undercover is provided with a vehicle width direction rib connected to the rear end of the water draining rib, and a longitudinal direction rib connected to the vehicle width direction rib, and the vehicle width direction rib is connected to the vehicle width direction rib. The directional rib extends inward in the vehicle width direction from the rear end portion, and the longitudinal rib extends toward the front of the vehicle from the inner end in the vehicle width direction of the vehicle width direction rib. The saddle-ride type vehicle according to any one of 6 to 6.
According to this configuration, water flowing rearward from the draining rib can be prevented from flowing inward in the vehicle width direction by the longitudinal ribs and the vehicle width direction ribs. Therefore, parts and the like placed inside the draining rib in the vehicle width direction can be protected from water.

(Structure 9) A structure characterized in that, on the lower surface of the undercover, a rear sloped surface is provided on the inner side in the vehicle width direction of the rear end of the draining rib, and the rear sloped surface slopes downward toward the rear. 9. The saddle-ride type vehicle according to any one of 1 to 8.
According to this configuration, the running wind flowing rearward from the draining rib can be smoothly flowed rearward and downward by the rear inclined surface, and the resistance caused by the running wind can be reduced. In addition, water flowing rearward from the draining rib can be guided downward by the rear inclined surface, and water can be prevented from flowing upward.

10 Saddle type vehicle 11 Vehicle body frame (vehicle body)
13 Front wheel 15 Rear wheel 40 Undercover 50 Base part 51 Step part 52 Convex part (front part)
53 Draining rib 53a Front end 53b Lower end (lower end of draining rib)
53c Rear end portion 53d Rear end portion 55 Rear surface portion of convex portion (rear surface portion)
56 Convex lower surface part (lower surface part, lower end of front part)
63 Inner rib 63c First rear inclined surface (rear inclined surface)
64 Outer rib 65 Vehicle width direction rib 65c Second rear inclined surface (rear inclined surface)
66 Anteroposterior rib

Claims (9)

An undercover (40) that covers the vehicle body (11) from below is provided between the front wheel (13) and the rear wheel (15), and the undercover (40) projects downward from the lower surface of the undercover (40). In a saddle-ride type vehicle that also includes a draining rib (53) extending in the longitudinal direction of the vehicle,
The undercover (40) is a saddle-ride type vehicle characterized in that the undercover (40) includes a front portion (52) that overlaps the draining rib (53) from the front of the vehicle when viewed from the front of the vehicle. The saddle-ride type vehicle according to claim 1, wherein a front end (53a) of the draining rib (53) is connected to a rear surface (55) of the front portion (52). The undercover (40) includes a flat base portion (50) and a step portion (51) that is recessed upward with respect to the base portion (50) on the outside in the vehicle width direction with respect to the base portion (50). ,
The draining rib (53) projects downward from the step (51),
The saddle-ride type vehicle according to claim 1 or 2, wherein the front portion (52) projects downward with respect to the step portion (51). The saddle-ride type vehicle according to claim 3, wherein the lower surface portion (56) of the front portion (52) has a flat plate shape that is continuous with the base portion (50). The stepped portion (51) is an inclined surface that slopes upward toward the outer side in the vehicle width direction, and the draining rib (53) is located at the outer end of the stepped portion (51) in the vehicle width direction. 5. The saddle-ride type vehicle according to claim 3, wherein the saddle-ride type vehicle protrudes downward from the saddle. The saddle type vehicle according to any one of claims 1 to 5, wherein a lower end (53b) of the draining rib (53) is located above a lower end (56) of the front portion (52). . The lower surface of the undercover (40) is provided with an inner rib (63) and an outer rib (64) connected to the rear end (53c) of the draining rib (53),
The inner rib (63) extends rearward and inward in the vehicle width direction from the rear end portion (53c),
7. The saddle-ride type vehicle according to claim 1, wherein the outer rib (64) extends rearward and outward in the vehicle width direction from the rear end portion (53c). The lower surface of the undercover (40) includes a vehicle width direction rib (65) connected to the rear end (53d) of the draining rib (53), and a vehicle width direction rib (65) connected to the vehicle width direction rib (65). A longitudinal rib (66) is provided,
The vehicle width direction rib (65) extends inward from the rear end portion (53d) in the vehicle width direction,
The saddle riding according to any one of claims 1 to 6, wherein the longitudinal rib (66) extends toward the front of the vehicle from an inner end in the vehicle width direction of the vehicle width direction rib (65). type vehicle. On the lower surface of the undercover (40), on the inner side in the vehicle width direction of the rear end portions (53c, 53d) of the draining rib (53), there is a rear sloped surface (63c) that slopes downward toward the rear. , 65c). 9. The saddle-ride type vehicle according to claim 1, further comprising: . , 65c).

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