JP2001080559A - Fairing device for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make rain water and water intruded from an introducing port into an inside of a fairing hardly scattered toward a footrest. SOLUTION: This motorcycle 1 is provided with a fairing 30 for covering an area ranging over from an upper front side of a front fork 6 to left and right sides of an engine 18, and left and right footrests 16a, 16b arranged in a rear side of the engine 18. The fairing 30 has a side wall 45 positioned in a side of the engine 18, and an introducing port 52 for taking air into the fairing 30 is formed in a rear end part of the side wall 45. The port 52 is located in an upper side of the footrests 16a, 16b. The side wall 45 of the fairing 30 has a shielding wall 53 extended toward an inner side along a width direction, and the wall 53 is located at least in a rear side of an opening portion of the introducing port 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fairing device for a motorcycle that reduces air resistance during high-speed running.

[0002]

2. Description of the Related Art There is known a road sports type motorcycle equipped with a fairing that continuously covers from the upper front of a front fork to the left and right sides of an engine in order to reduce air resistance during high-speed running. Have been.

[0003] The fairing of this kind is upper cowl,
It consists of a middle cowl and an under cowl. The upper cowl is located at the upper front of the front fork, and has a windshield mainly for reducing wind pressure applied to the upper body of the driver. The middle cowl and the under cowl continuously cover the range from the side to the bottom of the engine, and mainly protect the driver's legs from wind pressure.

[0004] The middle cowl and the under cowl have a running wind intake port located in front of the engine and side walls located on the left and right sides of the engine. The intake is located immediately after the front wheels, and inside this intake there is a heat exchanger such as a radiator or oil cooler. Therefore, while the motorcycle is traveling, the traveling wind taken from the intake is passed through the heat exchanger, then guided rearward through the space between the side wall and the engine, and directed rearward from the rear end of the side wall. It is being discharged.

[0005] By the way, in a road sports type motorcycle, a bar handle is installed at a low position near a steering head pipe so that a driver can easily take a prone position at a high speed running, and a footrest is also provided with an engine. Is also installed at a relatively high position behind. Therefore, when the vehicle is running with the legs resting on the footrest, the shin of the legs faces the rear end of the side wall of the middle cowl or the under cowl, and the hot air passing through the heat exchanger is directly guided to the shin. . Therefore, the thermal influence on the driver's legs during the running of the motorcycle becomes large, and a comfortable driving environment cannot be obtained.

Conventionally, in order to improve such a problem,
A fairing in which an air inlet is formed in a middle cowl or an under cowl is known. This type of air inlet is formed in the side wall of the middle cowl or under cowl, and takes in the air (running wind) flowing along the outer surface of the side wall during the running of the motorcycle into the inside of the fairing. ing.

According to this configuration, the hot air that has passed through the heat exchanger inside the fairing and the cold air that has been taken in from the air inlet intersect with each other, so that the hot air that is discharged from the rear end of the side wall of the fairing The temperature of becomes low.
Therefore, the influence of heat on the legs of the driver can be reduced.

[0008]

However, according to the conventional fairing, since the air inlet is opened as it is inside the middle cowl or the under cowl, the air introduction port is used when traveling in rain or traveling on a wet road surface. When you do
Rainwater and water splashed by the front wheels enter the inside of the cowl through the air inlet.

For this reason, the moisture or rainwater that has entered the inside of the cowl is scattered from the rear end of the side wall toward the shin of the driver by multiplying the hot air flowing inside the cowl. Thus, despite the fact that the middle cowl and the under cowl provide wind protection for the legs, the shin may get wet or dirty, and there is still room for improvement in this regard.

The present invention has been made in view of such circumstances, and it is difficult for rainwater and moisture entering the inside of the fairing from the inlet to scatter toward the footrest, and to wet or stain the legs of the driver. It is an object of the present invention to provide a motorcycle fairing device that can prevent the occurrence of a vehicle.

[0011]

To achieve the above object, a fairing device for a motorcycle according to the present invention includes a front fork and a frame for supporting an engine disposed behind the front fork; A fairing supported on the frame so as to continuously cover at least the left and right sides of the engine from the upper front of the vehicle; and left and right footrests disposed behind the engine and on which a driver places legs. Forming an inlet on the side wall of the fairing to take in air into the inside of the fairing, positioning the inlet above the footrest, and at least the opening of the inlet on the side wall of the fairing. Is also located at the rear, forming a wall that projects inward along the vehicle width direction. It is set to.

According to this configuration, while the motorcycle is running,
When rainwater or splashed water enters the inside of the fairing from the inlet, the rainwater or moisture tends to move backward by multiplying the airflow flowing inside the side wall. However, since there is a wall projecting inward in the vehicle width direction behind the inlet, the rainwater and the moisture collide with the wall and are separated from the airflow, and drop along the wall. I do.

[0013] Therefore, the rainwater or moisture that has entered the inside of the fairing does not scatter directly from the rear end of the side wall toward the footrest, and is less likely to adhere to the legs placed on the footrest.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 and 2 show a supersports type motorcycle 1 having a shape close to a road racer. A frame 2 of the motorcycle 1 includes a steering head pipe 3, a pair of left and right main frame members 4.
a, 4b and a rear frame member 5.

The steering head pipe 3 is located at the front end of the frame 2, and a front fork 6 is pivotally supported by the steering head pipe 3. The front fork 6 supports a front wheel 7 at a lower end thereof.
a, 8b are attached.

The main frame members 4a and 4b extend rearward from the steering head pipe 3 and are spaced apart from each other in the vehicle width direction. The main frame members 4a, 4b are inclined downward as they move rearward of the steering head pipe 3, and a fuel tank 9 is installed on the main frame members 4a, 4b.

Left and right rear arm brackets 10 (only one is shown) are welded to the rear ends of the main frame members 4a and 4b. The rear arm bracket 10
The rear arms 11 protrude downward from the rear ends of the main frame members 4a and 4b, and the rear arm bracket 10 pivotally supports the rear arm 11. Rear arm 1
Reference numeral 1 extends rearward of a rear arm bracket 10, and a rear wheel 12 is supported at a rear end of the rear arm 11.

The rear frame member 5 extends rearward from the rear ends of the main frame members 4a and 4b. The rear frame member 5 is located above the rear arm 11 and the rear wheel 12, and the seat 13 is supported on the rear frame member 5.

As shown in FIGS. 1 and 2, the rear arm bracket 10 includes left and right footrest brackets 15.
a and 15b are attached. The footrest brackets 15a, 15b project rearward outside the rear arm 11, and the left and right footrests 16a, 16a, 15b are provided at the rear ends of the footrest brackets 15a, 15b.
16b is attached. Footrest 16a, 1
6 b is located just below the seat 13.

As shown in FIG. 4, the main frame member 4
a and 4b support a water-cooled 4-cycle parallel 4-cylinder engine 18. This engine 18 is a crankcase 1
9 has a cylinder block 20 and a cylinder head 21 extending upward from the front end. The cylinder head 21 is suspended from the main frame members 4a and 4b via an engine bracket 22, and a radiator 23 is disposed in front of the cylinder head 21.

In front of the steering head pipe 3, a meter unit 25 and a pair of head lamps 26 are provided.
a and 26b are arranged. The meter unit 25 and the headlamps 26a, 26b are supported by a stay 27 extending forward from the steering head pipe 3. The headlamps 26a, 26b are arranged on the left and right sides of the vehicle center line. The front lenses 28 of the headlamps 26a, 26b are curved so as to go backward as they move outward in the vehicle width direction, and the upper edge of the front lenses 28 is suspended as they move outward in the vehicle width direction. Is up.

As shown in FIGS. 1 to 3, the motorcycle 1 is equipped with a fairing 30 for reducing air resistance during high-speed running. The fairing 30 covers the frame 2 so as to continuously cover a range from the upper front of the front fork 6 to the side and below the engine 18.
It is supported by. The fairing 30 includes an upper cowl 31, a middle cowl 32, and an under cowl 33.
It is composed of

The upper cowl 31 is located in front of the upper part of the steering head pipe 3 and the front fork 6. The front surface of the upper cowl 31 is curved so as to be narrowed rearward as it goes outward in the vehicle width direction, and the front lens 28 of the head lamps 26a and 26b is exposed on the front surface.

The upper part of the upper cowl 31 extends toward the upper end of the front fork 6, and a V-shaped cut 34 is formed in the upper part. The cut 34 is covered by a transparent windshield 35. The windshield 35 extends rearward from the upper portion of the front surface of the upper cowl 31, and covers the meter unit 25 and the head lamps 26a and 26b from above.

The middle cowl 32 has left and right side panels 37a and 37b. Side panels 37a, 3
7b covers the cylinder block 20, the cylinder head 21, and the radiator 23 of the engine 18 from the left and right sides. An inlet (not shown) for taking in cooling air is formed inside the fairing 30 between the front ends of the side panels 37a and 37b, and the radiator 23 is housed inside the inlet. I have.

An exhaust port 41 is opened substantially at the center of the side panels 37a and 37b. The exhaust port 41 is shown in FIG.
As shown in FIG. 2, most of the cooling air that has passed through the radiator 23 and has become high temperature is discharged to the outside of the fairing 30 through the exhaust port 41. I have.

Rear edge 42 of side panels 37a, 37b
Are located outside the main frame members 4a, 4b along the vehicle width direction. The rear edge 42 is inclined downward as it moves rearward along the main frame members 4a, 4b. The rear edge 42 is integrally formed with an end wall 43 projecting inward along the vehicle width direction. Is formed. The end wall 43 closes a gap between the side panels 37a, 37b and the outer surfaces of the main frame members 4a, 4b.

The under cowl 33 has left and right side walls 45 (only one is shown) located on the side of the cylinder block 20 and the crankcase 19 of the engine 18. The side wall 45 is inclined inward in the vehicle width direction as it proceeds downward to secure a bank angle of the motorcycle 1. The side wall 45 has a notch 46 that avoids both ends of the crankcase 19, and the notch 46 is opened at a rear edge 47 of the side wall 45.

As shown in FIG.
Has a recess 50 at the rear of the side wall 45. Recess 50
Extends in the front-rear direction above the notch 46. The recess 50 has a bottom wall 51 that protrudes inside the under cowl 33. The bottom wall 51 is inclined so that the overhang depth increases as it goes backward, and an inlet 52 is formed at the rear end of the concave portion 50 where the overhang depth of the bottom wall 51 is maximum. The introduction port 52 is for taking air (running wind) flowing along the outer surface of the side wall 45 into the inside of the under cowl 33 during traveling of the motorcycle 1. It is located just before. When the motorcycle 1 is viewed from the side, the inlet 52 is connected to the footrests 16a, 16b.
It is installed at a higher position.

As best shown in FIG. 5A,
The upper end of the rear edge 47 of the side wall 45 is connected to the side panel 37a,
37b is connected to the lower end of the rear edge 42. This side wall 4
A shielding wall 53 as a wall is formed at the upper end of the rear edge 47 of 5. The shielding wall 53 extends integrally from the rear edge 47 toward the inside along the vehicle width direction, and continues to the end wall 43 of the side panel 37. The shielding wall 53
It is located immediately after the inlet 52 and is interposed between the inlet 52 and the footrests 16a and 16b. The protruding end of the shielding wall 53 projects inward in the vehicle width direction from the opening of the inlet 52.

As shown in FIG. 3, while the motorcycle 1 is traveling, the driver R grasps the bar handles 8a, 8b with both hands H and simultaneously lifts both legs L with the footrests 16a, 16b.
The seat 13 is straddled on the seat 13 in a state where it is placed on the seat 13b, and its riding position is in a forward leaning posture that is hardly affected by air resistance. At this time, since the driver R holds the fuel tank 9 between the knees K of the leg L, the shin S of the leg L is
7a, 37b rear edge 42 and side wall 4 of under cowl 33
5 is located immediately after the trailing edge 47.

During traveling of the motorcycle 1, most of the cooling air introduced into the fairing 30 from the intake port passes through the radiator 23 and is discharged to the outside of the fairing 30 through the exhaust port 41. Part of the cooling air becomes hot air accompanied by the hot air of the engine 12 and the engine 12 and the side panels 37a and 37b and the side wall 45.
Guided backward through.

Also, while the motorcycle 1 is traveling, the air flowing along the outer side surface of the side wall 45 of the under cowl 33 is guided to the inlet 52 by using the bottom wall 51 of the recess 50 as a guide.
It is taken into the inside of the under cowl 33 from this inlet 52.

As a result, the hot air that has passed through the radiator 23 inside the under cowl 33 and the cold air that has been taken in from the inlet 52 are mixed, so that the side panel 3
The temperature of the hot air discharged from the rear ends of 7a and 37b and the rear end of the under cowl 33 decreases. Therefore, the legs L of the driver R are not exposed to high-temperature hot air, and the influence of heat on the driver R can be reduced.

On the other hand, when the intake port 52 is opened in the side wall 45 of the under cowl 33, when the vehicle runs in the rain or on a wet road surface, the rainwater or the water jumped up by the front wheel 7 causes the side wall 45 to splash. Of the inlet 52
And enters the inside of the under cowl 33 from the inlet 52. As shown by arrows in FIGS. 5A and 5B, the rainwater and the moisture are multiplied by cold air taken in from the introduction port 52 or hot air flowing inside the under cowl 33, so that the rain water or the moisture flows to the rear end of the under cowl 33. Try to fly towards.

However, in the above configuration, the inlet 5
2, there is a shielding wall 53 projecting inward in the vehicle width direction, so that rainwater or moisture entering the under cowl 33 collides with the shielding wall 53 and is separated from the airflow. , And is dropped in the direction of the notch 46.

For this reason, the rainwater or moisture that has entered the under cowl 33 flows from the rear end of the side wall 45 to the footrest 16.
It can be prevented that the particles are scattered as they are toward a and 16b.
Therefore, although the introduction port 52 is located immediately before the shin S of the leg L placed on the footrests 16a and 16b, rainwater or moisture hardly adheres to the shin S, and wetness and fouling of the shin S are promoted. You don't have to.

Further, according to the above configuration, the shielding wall 53 is
Since the inward cowl 52 extends inward from the rear edge 47 of the side wall 45 of the under cowl 33, it is positioned at the rear end of the side wall 45 even if the inlet 52 is located immediately before the shielding wall 53. Therefore, the inlet 52 can be brought as close as possible to the footrests 16a, 16b, and the cold air taken in from the inlet 52 can be efficiently guided to the shin S of the leg L placed on the footrests 16a, 16b.

Further, the side panels 37a and 37b are
The rear edge 42 has an end wall 43 projecting inward, and the end wall 43 is inclined downward as it goes backward.
According to this configuration, the high-temperature cooling air that cannot be exhausted from the exhaust port 41 is guided along the inner surfaces of the side panels 37a and 37b to the end wall 43, and then downwards along the end wall 43. The flow, and therefore the hot cooling air,
Is more easily guided forward of the shin S.

However, the shielding wall 53 extends downward continuously from the end wall 43, and
Since the inlet 52 is opened immediately before, the cold air taken in from the inlet 52 is mixed with the high-temperature cooling air flowing along the end wall 43, and the temperature of the cooling air is accordingly reduced. Lower. Therefore, the side panels 37a,
The high-temperature cooling air flowing along the inner surface of 37b is not guided to the shin S of the driver R as it is, so that the influence of heat on the driver R can be further reduced.

In the above embodiment, the shielding wall for blocking rainwater and moisture is formed at the rear edge of the side wall of the under cowl, but may be formed between the rear edge of the side wall and the inlet.

[0043]

According to the present invention described in detail above, despite the fact that the inlet is opened in the side wall of the fairing, the rainwater or moisture that has entered the inside of the fairing from this inlet is placed on the footrest. This makes it difficult for the legs to scatter, and the legs do not need to be wetted or stained.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the motorcycle.

FIG. 3 is a side view of the motorcycle showing a positional relationship between a driver's leg and a fairing introduction port.

FIG. 4 is a side view showing a positional relationship between a fairing, a frame, and an engine.

FIG. 5A is a side view showing an opening shape of an introduction port.
(B) is sectional drawing which follows the 5B-5B line | wire of (A) of FIG.
(C) is a sectional view taken along line 5C-5C in (A) of FIG.

[Explanation of symbols]

 2 ... frame 6 ... front fork 16a, 16b ... footrest 18 ... engine 30 ... fairing 45 ... side wall 52 ... introduction port 53 ... wall (shielding wall)

Claims (2)

[Claims] 1. A front fork and a frame for supporting an engine disposed behind the front fork; and a frame supported by the frame so as to continuously cover an upper front portion of the front fork and at least the left and right sides of the engine. And a left and right footrest disposed behind the engine and on which a driver places legs. The fairing has a side wall located on the side of the engine, and the side wall has air. A fairing device for a motorcycle in which an inlet is formed inside the fairing and the inlet is located above the footrest, wherein a side wall of the fairing has at least an opening portion of the inlet. And a wall that extends inward in the vehicle width direction. Fairing device for a motorcycle according to claim. 2. The method according to claim 1, wherein the wall is
A fairing device for a motorcycle, wherein a leg is placed between the shin of the leg and the introduction port when the leg is placed on the footrest.