JPH07117765A - Outside air introduction structure for motorcycles - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the efficiency of outside air introduction. [Structure] The louver 12 provided at the entrance of the duct is provided with a large number of V-shaped straightening plates 61a, 61b, 62a, 62b,
It is composed of 63a and 63b. Upper straightening plates 61a, 62
The a and 63a have an upward and rearward chevron shape, and the lower flow straightening plates 61b, 62b and 63b have a downward and backward chevron shape.
As a result, the louver 12 as a whole spreads out in four directions of up, down, left, and right toward the front, and inclines toward the center to the rear,
The running wind is efficiently guided to the center of the duct 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outside air introduction structure for a motorcycle.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 3-19112 discloses an outside air introduction port provided at a front portion of a front cowl of a motorcycle, and the outside air taken in through the outside air introduction port is introduced into a radiator provided inside the front cowl. Then, the structure for cooling is shown. In Japanese Utility Model Laid-Open No. 63-170531, a louver provided in front of the radiator is expanded in a substantially V-shape toward the front in a horizontal cross section.

[0003]

In all of the above known examples, since the rectifiers constituting the louver are tilted in one direction or in two left and right directions, the opening areas of the louver and the duct following it are the same. Become. In addition, the traveling wind becomes difficult to enter from directions other than the direction that coincides with the inclination direction of the straightening vanes. Therefore, the amount of outside air that can be introduced is naturally limited, but in order to improve the cooling efficiency and the intake efficiency, it may be desired to significantly increase the amount of outside air that should be introduced. However, in order to increase the opening area of the duct, there is naturally a restriction due to the request to make the vehicle body compact. Therefore, it is desired to improve the introduction efficiency as much as possible within the predetermined opening area of the duct.

[0004]

In order to solve the above problems, a front cowl that covers the front part of the vehicle body from the front to the sides, and an opening for introducing outside air into the front cowl from a portion provided in the front part In a motorcycle equipped with an outside air introduction passage and a duct for introducing outside air taken in from the outside air introduction passage to a heat source located inside the front cowl, in the outside air introduction passage, an opening is directed forward. It is characterized in that a louver that expands vertically and horizontally is provided.

[0005]

The opening of the louver expands in the four directions of up, down, left and right toward the front. For this reason, the opening area of the louver becomes larger than the opening area of the duct, and it is possible to introduce a wider range of outside air, and it is possible to smoothly introduce outside air from almost all directions around the louver toward the center of the duct. Introduction efficiency is improved.

[0006]

In the louver according to the present invention, since the opening is expanded in the four directions of up, down, left and right toward the front, the opening area can be made larger than the opening area of the duct and is wider in the outside air introducing passage. A range of outside air can be introduced. In addition, since it is inclined in four directions of up, down, left and right, the outside air can be smoothly introduced from almost all directions around the opening of the louver in the outside air introduction passage toward the center of the duct. Therefore, it is possible to improve the introduction efficiency of outside air as much as possible within the range of the determined opening area of the duct, and it is possible to introduce a sufficient amount of outside air without increasing the opening area of the duct. It is also possible to make the vehicle body compact.

[0007]

2 to 6 show the appearance of an electric motorcycle to which this embodiment is applied. FIG. 2 is a left side view, FIG. 3 is a left perspective view, FIG. 4 is a right perspective view, and FIG. Is a plan view and FIG. 6 is a front view.

In these figures, a front wheel 2 is connected to a central frame 1 via front arms 3a and 3b, and a rear wheel 4 is connected to a rear arm 5.

The frame 1 supports a battery 6 such as a nickel-cadmium battery, a fuel cell 7, and a hydrogen storage chamber 8 made of a hydrogen storage alloy. The fuel cell 7 and the hydrogen storage chamber 8 are covered by a front cowl 9.

An outside air inlet 1 is provided at the front of the front cowl 9.
0 opens and communicates with the outside air introduction passage that is a space inside the front cowl 9. A slope portion 11 is formed in the outside air introduction path behind the outside air introduction port 10 and communicates with the duct 13 via a louver 12 provided here. The outside air inlet 10 is a relatively large opening that opens forward or downward, and the downward portion is directed upward of the front wheel 2.

The duct 13 guides the outside air in the outside air introduction passage to the fuel cell 7, where it reacts with hydrogen from the hydrogen storage chamber 8 to supply electric power to the motor 14 of the rear arm 5 and part of it to the battery 6. store.

The heat generated by the fuel cell 7 is released into the atmosphere by the heat radiation fins 15 provided at the rear of the fuel cell 7, and the water is discharged below the vehicle body by the hose 16.

In FIG. 2, reference numeral 17 is a screen, 18 is a handle, 19 is a seat, 20 is a lower cover, and 21 is a stand storage cover. When you open the stand storage cover,
The internal side stand can be pulled out, and at the same time, the power outlet 22 for charging the battery 6 and the charging port 23 for filling the hydrogen storage chamber 8 with hydrogen are exposed.

Further, 24 is a step, and FC is a front cushion. The rear cushion is the rear arm 5.
It is provided at an appropriate position such as inside the.

Further, as the lights, the front cowl 9
A headlight 25 provided at the front of the vehicle, a front blinker 26, a deceleration indicator light 27 provided at the rear of the rear arm 5, and a tail lamp 29 provided at the rear of the rear cowl 28 are provided.

The ring-shaped rim 30 of the front wheel 2 and the disc 31 inside thereof are connected by a coupling 32, and an axle 33
It is freely rotatable around. The thrust bearing 35 provided on the wheel cover 34 supports the rim 30 in the thrust direction.

A portion of the wheel cover 34 near the axle 33 has a sloping rectifying surface 36 for directing the traveling wind from below toward the outside air inlet 10.

Further, upper portions 37 integrally extending upward from the rectifying surface 36 are formed on the left and right side surfaces of the front wheel 2, and are respectively connected by a front fender 38 having high rigidity, and the front fender 38 functions as a stabilizer of the wheel cover 34. is doing. The portion of the wheel cover 34, which is located between the front arm 3a and the front arm 3b, behind the axle 33 is a spoiler 39.

The structure of the rear wheel 4 is similar to that of the front wheel 2, and
Is a rim, 41 is a disc, 42 is a coupling, 43 is an axle,
44 is a wheel cover, 45 is a thrust bearing, 4
6 and 47 are spoilers.

As is apparent from FIGS. 5 and 6, the handle 18 is formed by pressing a flat bar alloy core material integrally with a carbon fiber reinforced resin and integrally forming it with a polycarbonate screen 17. It is designed to be integrated and improved in aerodynamic characteristics.

The screen 17 is not integrated with the front cowl 9 and can be adjusted up and down by moving the handle boss shaft 50 (FIG. 5) up and down to adjust the riding position. Further, when the screen 17 is raised, a gap is formed between the screen 17 and the upper end of the front cowl 9, and the traveling wind can be introduced mainly around the occupant at low speed through the gap.

A pressure switch 5 is provided on one grip 51.
2 and the brake primary switch 53 are provided, and the pressure provided by the pressure sensitive switch 52 and the brake primary switch 53 can be applied to the front wheels 2 and the rear wheels 4 without operating the brake pedal.

A volume switch type throttle switch (not shown) is provided on one side of the handle 18. By operating this, a throttle signal corresponding to the operation amount of the throttle switch is used for controlling the drive of the motor 14. By inputting to the controller, the rotation of the motor 14 is changed to accelerate / decelerate.

FIG. 1 shows the louver 12 three-dimensionally from diagonally forward. The louver 12 in FIG. 7 is the same as the louver 12 in FIG. It corresponds to a cross section (cross section in the left-right direction) taken along the line BB.

As is apparent from these figures, the louver 1
2 is provided at the entrance of the duct 13 and has a V-shaped straightening plate 61a, 62a and 63a having a chevron shape on the upper side of the shaft plate 60 having a rhombic cross section in the central part, and a chevron shape on the lower side. V-shaped straightening vanes 61b, 62b, and 63b, which form the above, are integrally provided.

Further, as is clear from FIGS. 7 and 8, each of the straightening vanes is inclined rearward so as to spread toward the front and the left and right sides at a predetermined interval, and the traveling wind is blown by the duct 13. It can be introduced efficiently into the interior.

As shown in FIG. 7, the slope portion 11 in the present embodiment is formed integrally with the duct 13 and is formed so as to open the entrance portion thereof forward and downward. Since the front end portion forms the outside air introduction path,
The front cowl 9 is attached to an inner cowl 10a that is formed continuously by folding back a portion around the outside air introduction port 10 inward. A lower portion of the opening of the slope portion 11 is inclined obliquely downward and is directed toward the straightening surface 36 (FIG. 2) of the front wheel 2.

Next, the operation of this embodiment will be described. Of the V-shaped straightening vanes forming the louver 12, the upper side 61a, 62a
Since a and 63a form a mountain shape upward and rearward, the front end is inclined and opened upward and leftward and rightward, and the rear end is inclined so as to converge toward the entrance of the duct 13.

Similarly, the lower ends 61b, 62b, 63b also open forward with their front ends tilted downward and leftward and rightward, and their rear ends also tilt toward the center of the duct 13 so as to converge.

Therefore, the entire louver 12 is inclined so that the front part spreads vertically and horizontally and the rear part converges toward the central part.

Therefore, from the front of the vehicle body, the front cowl 9
Since the traveling wind flowing along the surface of the above is smoothly introduced into the duct 13 by the louvers 12 spreading in these four directions so as to be converged to the center thereof, the outside air introduction efficiency is improved with respect to the duct 13 having the same opening area. It is possible to remarkably improve and supply a sufficient amount of air to the rear fuel cell 7 to react oxygen in the outside air with hydrogen from the hydrogen storage chamber 8 to generate a sufficient amount of power.

Therefore, the duct 13 can be made as small as possible to make the vehicle body compact. Moreover, in this embodiment, since the opening direction of the lower side of the slope 11 is directed to the rectifying surface 36, the traveling wind from below can be efficiently introduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a louver of an embodiment from the front.

FIG. 2 is a left side view of the motorcycle to which the embodiment is applied.

FIG. 3 is a perspective view showing the above left rear view.

FIG. 4 is a perspective view showing the above right rear view.

FIG. 5 is a schematic plan view of the above.

FIG. 6 is a front view of the above.

FIG. 7 is a vertical cross-sectional view showing a mounted state of the louver.

8 is a cross-sectional view taken along line BB in FIG. 1 showing a louver attached state in the left-right direction.

[Explanation of symbols]

9: Front cowl, 10: Outside air inlet port, 11: Slope portion, 12: Louver, 13: Duct, 60: Shaft plate, 61
a, 61b, 62a, 62b, 63a, 63b: V-shaped straightening plate

Claims (1)

[Claims] 1. A front cowl that covers a front part of a vehicle body from the front to the sides, an opening outside air introduction path for introducing outside air from a portion provided in the front part to the inside of the front cowl, and an inside of the front cowl. In a motorcycle equipped with a duct for introducing outside air taken in from an outside air introduction path to a heat source located in the outside air introduction path, a louver is provided in the outside air introduction path, the opening of which extends upward and downward and to the left and right. Automatic 2 characterized by
Outside air intake structure for wheeled vehicles.