JPH0361187A - Cowling structure of motorcycle - Google Patents

Abstract

PURPOSE:To reduce the water dashed during running from being splashed upon the rear wheel by providing the part where the cowling covers the underside of a vehicle with a water cutting part for guiding water toward the outside in the vehicle width direction. CONSTITUTION:On the rear wheel 9 side of the bottom part 24a of a cowling 24, a water cutting part 31 for guiding water toward the outside in the vehicle width direction is formed. The water cutting part 31 is formed by ribs 31a, 31b which extend rearward so as to be symmetrical right and left to the center line of the bottom part 24a of the cowling 24, and also toward the outside in the vehicle width direction. By this constitution, the water splashed during running is scattered toward the outside in the vehicle width direction by the water cutting part 31 in the inside of the cowling 24. Thus, the water splashed upon the rear wheel can be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cowling structure for a motorcycle, and more specifically, to a motorcycle that prevents water splashed up by the front wheel during driving etc. from splashing from the cowling onto the rear wheel. Regarding the cowling structure of.

[Prior Art] Some motorcycles have a cowling, for example, that covers the lower side of the vehicle body from the vicinity of the rear of the front wheel to the vicinity of the front of the rear wheel.

This cowling not only reduces air resistance while riding, but also protects the rider from the rain in rainy weather and prevents water thrown up by the front wheels from splashing onto the engine.

[Problem to be Solved by the Invention] By the way, when the vehicle is driven in the rain, the water splashed up by the front) 4 adheres to the portion of the cowling that covers the lower side of the vehicle body, and is thrown backward and scattered as the vehicle travels. It becomes like this. This scattered water may splash onto the rear wheels, causing what is called a hydroplaning phenomenon.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a cowling structure for a motorcycle that reduces the amount of water splashed up by the front wheel from the cowling and onto the rear wheel.

[Means for Solving the Problems] In order to solve the above problems, a cowling structure for a motorcycle according to the present invention is provided. The cowling is characterized in that a portion of the cowling that covers the lower side of the vehicle body is provided with a guide draining portion for directing water outward in the vehicle width direction.

E-effect] In this invention, when water splashed up by the front wheels hits the cowling during or after driving in the rain, it is scattered outward in the width direction of the vehicle by the water cutter, reducing the amount of water splashing on the rear wheels. Ru.

[Embodiments] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a side view of a motorcycle to which this invention is applied;
The figure is a front view of the cowling, Figure 3 is a side view of the cowling, Figure 4 is a bottom view of the cowling, and Figure 5 is the V-
It is a V sectional view.

Reference numeral 1 in the figure indicates a motorcycle, and a front wheel 4 is supported on a head vibe 2 via a front fork 3, and a main frame 5 extending rearward from the head vibe 2 has a
A type engine 6 is suspended. A rear arm 7 is pivotally supported at the rear of the main frame 5 via a pivot l1Ih8, and a rear wheel 9 is supported at the rear end of the rear arm 7. The main frame 5 is provided with a seat frame 10 extending rearward, and the seat frame 10 is supported at the rear of the main frame 5 via a bracket 11. Further, behind the fuel tank 12, a seat 13 is mounted on the seat frame 10.

■Type engine 6 is arranged with two cylinders each on the top and bottom, and has four cylinders.
Those with cylinders are used. The space between the lower two cylinders 6a and the upper two cylinders 6b is filled with the lower two cylinders 6a.
two carburetors 14 connected to a, and two upper cylinders 6b
There are two vaporizers 15 connected to each other. Exhaust pipes 16 and 17 connected to the lower two cylinders 6a pass below the ■-type engine 6 and extend rearward. Further, an exhaust pipe (not shown) is similarly connected to the cylinder 6b on the second side,
Extends backwards.

A main radiator 18 is arranged at the front upper part of the type engine 6, and this main radiator 18 is connected to the main frame 5.
A pipe (not shown) supported on the front side of the main radiator 18 and connected to the upper part of the main radiator 18 is connected to the ■-type engine 6, and a pipe 19 connected to the lower part is connected to the sub-radiator 20.
is connected to. The subradiator 20 is supported by the lower cylinder 6a via a stay 21, and the subradiator 20
The piping 22 connected to the engine 6 is connected to an auto bomb 23 of the ■-type engine 6, and the water pump 23 is driven to circulate cooling water to cool the engine.

A cowling 24 covers the area from the front of the head vibrator 2 to the side of the V-type engine 6, and its bottom 24a covers from the vicinity of the rear of the front wheel 4 on the lower side of the vehicle body to the vicinity of the front of the rear wheel 9. This cowling 24 has an opening 25 formed in a portion facing the main radiator 18 at a position slightly above the front wheel 4, and openings 26 formed on both sides of this opening 25. 252
The main radiator 18 is cooled by taking in running wind from the main radiator 6.

Further, an air inlet 27 is formed above the opening 26 of the cowling 24, and the air taken in from the air inlet 27 is sent to the main radiator 18 through a duct 28 formed in the cowling 24. It is designed to lead from below to the rear V-type engine 6 side.

An opening 29 is formed at the lower front side of the cowling 24,
The subradiator 20 is cooled by taking in air from the vehicle through this opening 29. A window portion 30 is formed in the bottom portion 24a of the cowling 24 at a portion facing the sub-radiator 20, through which the wind that cools the sub-radiator 20 blows through.

A drain portion 31 is formed on the bottom portion 24a of the cowling 24 to direct water outward in the vehicle width direction toward the rear wheels. Ribs 31a, 3 extend symmetrically rearward from the center line of 24a and outward in the vehicle width direction.
1b.

Therefore, when driving in the rain or after rain, water is splashed up by the front wheels 4, and this water is transferred to the bottom 24 of the cowling 24.
If it adheres to the surface a, it is guided by the ribs 31a and 31b of the draining portion 31, and is led outward in the vehicle width direction and scatters. Therefore, water splashed up by the front wheels 4 is less likely to splash on the rear wheels 9, and a hydroplaning phenomenon caused by splashed water splashing on the rear wheels 9 can be prevented.

6 to 10 are diagrams showing other embodiments of the cowling structure.

FIG. 6 shows a bottom view of the cowling 24, and in this embodiment, the drain section 32 is similar to the previous embodiment, and the cowling 24 is
4, the ribs 32a, 32b and ribs 32c, 32d extend symmetrically rearward from the center line of the bottom 24a and outward in the vehicle width direction, and two ribs are provided in the rear half of the bottom 24a. By providing double ribs, water is more effectively scattered outward in the width direction of the vehicle. Note that the number of draining portions is not limited to two ribs, and a plurality of ribs may be provided.

FIG. 7 also shows a bottom view of the cowling 24, and in this embodiment, the draining portion 33 is a rib 3 formed in the same manner as in the previous embodiment.
3a and 33b are formed from the front end of the cowling 16 to slightly closer to the rear wheel 15 than the center, and these ribs 33a and 3
Similar ribs 33c and 33d are formed behind the cowling 3b up to the rear wheel 9 side, so that water is scattered outward in the vehicle width direction from the front bottom of the cowling 24.

FIG. 8 also shows a bottom view of the cowling 24, and in this embodiment, the draining portion 34 is a rib 3 formed in the same manner as in the previous embodiment.
4a and 34b are the center of the bottom part 24a of the cowling 24,
It is formed at a slight distance from the rear wheel 9 side.

9 is a bottom view of the cowling 24, and FIG. 10 is a sectional view taken along line XX in FIG. 9.

In this embodiment, the draining portion 35 is formed slightly closer to the rear wheel 9 than the center of the bottom portion of the cowling 24, and has the bottom portion 24a protruding downward so that it is symmetrical from the center line, rearward, and outward in the vehicle width direction. A guide portion 35a extending in the direction is formed. The water that adheres to the bottom 24a of the cowling 24 is
Step portions 35b, 3 formed by this guide portion 35a
5c and scatter outward in the vehicle width direction.

Incidentally, it goes without saying that the drain portion formed on the bottom portion 24a of the cowling 24 is not limited to that in the embodiment described above.

[Effects of the Invention] As described above, in this invention, the part of the cowling that covers the lower side of the vehicle body is provided with a drainage portion that guides water outward in the width direction of the vehicle, so water is not splashed up by the front wheels when driving in the rain or after rain. Even if water splashes onto the cowling, it will be scattered outward in the vehicle width direction by the water drain section. Therefore, water splashed up by the front wheels is less likely to be applied to the rear wheels from the cowling, and it is possible to prevent the occurrence of hydroplaning.

[Brief explanation of drawings]

Fig. 1 is a side view of a motorcycle having a cowling to which the present invention is applied, Fig. 2 is a front view of the cowling, Fig. 7g3 is a side view of the cowling, and Fig. 4 is a bottom view of the cowling.
FIG. 5 is a sectional view taken along the line V-V in FIG. 4, FIGS. 6 to 10 are views showing other embodiments of the draining section, FIGS. 6 to 9 are bottom views of the cowling, and FIG. 9 is a sectional view taken along the line X--X in FIG. 9. In the figure, numeral 1 is a motorcycle, 4 is a front wheel, 9 is a rear wheel, 24 is a cowling, 24a is a bottom, and 31 to 35 are draining parts. Patent applicant from Yamaha! l1JI Machine Co., Ltd. No. 9 Figure 654- Figure 10

Claims (1)

[Claims] In a motorcycle that covers the lower side of the vehicle body with a cowling that extends from the vicinity of the rear of the front wheel to the vicinity of the front of the rear wheel, a drain portion for guiding water outward in the vehicle width direction is provided in the portion of the cowling that covers the lower side of the vehicle body. A motorcycle cowling structure featuring: