JPH035508Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a fairing device for a motorcycle.

(Prior Art) An engine having a cylinder tilted forward from a crankcase disposed between front and rear wheels, a body frame having an engine hanger for supporting the engine, and a body frame disposed in front of the engine. a radiator, a fairing that covers both sides of the engine from the front of the vehicle body, a running air intake that is opened at the front of the fairing, and an opening that is opened on both sides of the fairing, and the rear edge of the opening is the front edge of the opening. A fairing device for a motorcycle is already known, which includes a running wind exhaust port formed to be offset inward in the vehicle width direction.

In such a fairing device, after the radiator and engine are cooled by the traveling wind, it is desirable to immediately discharge the traveling wind to the outside of the fairing in order to improve the cooling efficiency.

(Problem that the invention attempts to solve) However, in the past, for example,
As disclosed in Publication No. 67280, there is a problem in that the running wind inside the fairing cannot be efficiently discharged from the exhaust port because it does not have any guide member etc. that guides the running wind taken in from the running wind intake to the exhaust port. . In particular, when the fairing is connected to a vehicle body equipment member such as a side cover to form a fairing, it is difficult to arrange the cylinder behind the exhaust port as disclosed in Japanese Utility Model Publication No. 60-67260. It is difficult to discharge the traveling wind that cools the cylinder portion to the outside of the fairing from the exhaust port, and the traveling wind tends to stagnate inside the fairing, resulting in a problem that the engine cooling efficiency cannot be improved.

The present invention has been devised to solve the above-mentioned problems, and the purpose of the present invention is to efficiently exhaust the running wind taken in from the running wind intake from the exhaust port, especially for the full-face ring type. To provide a fairing device for a motorcycle that can improve the cooling efficiency of an engine even when the engine is heated.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention erects the radiator 53 in front of the cylinder top surface 41C, and connects the running wind exhaust port 75 to the side surface 69 of the fairing on the upper side of the cylinder 41. An intake device 48 such as a carburetor 45 and an air cleaner 47 is arranged above the cylinder 41, the engine hanger 31 is placed close to both sides of the cylinder 41, and the rear edge 75A of the opening of the running wind exhaust port 75 is arranged.
was brought close to the engine hanger 31.

(Function) The cylinder upper surface 41C and the intake device 48 are used as guide members for the traveling wind, and the traveling wind is efficiently discharged from the traveling wind outlet 75.

Furthermore, the engine hanger 41 is used as a closing member that closes the space between the rear edge 75A of the opening and the side of the cylinder 41, so that the traveling wind from the traveling wind exhaust port 75 can be discharged more efficiently.

(Embodiment) Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a side view of the motorcycle, Fig. 2 is a plan view of the same, Fig. 3 is a front view of the same, Fig. 4 is a side view of the motorcycle with the fairing removed, and Fig. 5 is a plan view of the same. .

1 is a motorcycle, 3 is a front wheel, 5 is a rear wheel, a body frame 7 of the motorcycle 1 has a head pipe 9,
A pair of left and right main pipes 11, 11 extending rearward from the head pipe 9;
1 Left and right connecting plates 13, 1 vertically installed at the rear end
Equipped with 3rd class.

The front wheels 3 are suspended and supported via left and right front forks 15, a head pipe 9, and a handlebar 17 so as to be freely steerable.

A rear fork 21 is connected to the connection plate 13 by a pivot shaft 19.
The rear wheel 5 is supported at the rear end, and is suspended via a shock absorber 23 and a link mechanism 25 interposed between the vehicle body frame 7 and the rear fork 21.

The main pipe 11 is shown in FIG.
As shown in the line sectional view, it is formed of a member having an eye-shaped cross section, and the front and rear middle parts of the left and right main pipes 11, 11 are connected by cross pipes 27, 29, and the front part of the main pipes 11, 11 is From these, engine hangers 31 are vertically installed.

The engine 33 is a 4-cycle engine, and the engine is connected to the engine hanger 31 and the connecting plate 1 via support shafts 35 and 37 and a mount rubber (not shown).
Supported by 3.

The engine 33 includes four cylinders 41, . . . which are tilted forward from the front part of the crankcase 39, and each cylinder 41, . As shown in the cross-sectional plan view in FIG.

A valve chamber is formed in the upper part of the cylinders 41, . . . , and an intake pipe 43 is protruded from the rear of the cylinder 41.
A carburetor 45 is connected to the intake pipe 43 behind and diagonally above the cylinder 41, and the carburetor 45 is connected to an air cleaner 47 disposed above the cylinder 41.

The exhaust pipe 49 projects forward and diagonally downward from the front part of the cylinder 41, extends rearward along the front and lower part of the crankcase 39, and has a muffler 51 at the rear end.
Concatenate.

The radiator 53 faces the front of the upper surface 41C of the cylinder 41 and is erected between the front end portion of the main pipe 11 and the lower end of the cylinder upper surface 41C.

A seat rail 55 extends rearward from the rear part of the main pipe 11, and the seat rail 55 is connected between the rear end and the upper part of the connecting plate 13 by a rear stay 57.

A fuel tank 59 is provided over the main pipe 11, and covers the air cleaner 47 above, and a seat 61 is provided on the seat rail 55.

The front and side parts of the vehicle body frame 7 are covered with a fairing 63 and a side cover 65.

The fairing 63 has a front part 67 in which a running air intake 66 is formed, and left and right side parts 69 connected to the front part 67 and covering the sides of the main pipe 11 and the engine 33, as shown in a perspective view in FIG. ,69
Equipped with

As shown in FIG. 9, a bent piece 71 is formed on the upper edge of the side surface portion 69 facing the lower edge of the fuel tank 59, and the bent piece 71 is bent inward in the vehicle width. A recess 73 recessed inward in the vehicle width is formed in a portion facing the upper edge, and the bent piece 71 is positioned in the recess 73, so that the side surface 59A of the fuel tank 59
and the upper surface portion 69A of the fairing side surface portion 69.
and are formed in a continuous manner.

A running wind exhaust port 75 is opened in a portion of the side surface portion 61 of the fairing facing the side of the cylinder 41.

As shown in FIG. 7, the running wind exhaust port 75 is formed by deviating the opening rear edge 75A inward in the vehicle width from the opening front edge 75B, and expanding outward in the vehicle width from the opening rear edge 75A. An inclined surface 77 extending rearward is formed.

The rear edge 75A of the opening is located close to the side surface 31A of the engine hanger 31, as shown in an enlarged view in FIG. It faces the front of the front edge portion 31B of the engine hanger 31.

A notch 79 is formed at the rear and lower part of the fair ring 63, and a protruding piece 81 that protrudes toward the crankcase 39 is formed at the edge of the notch 79.

The side cover 65 is provided continuously over a rear portion 69E of the fairing side portion 69, a side rear end portion 59E of the fuel tank 59, and a lower edge portion 61E of the seat 61.

In the drawing, 83 is a step, and 85 is a stand.

Since this embodiment is configured as described above, the running wind cools the radiator 53 and then the cylinder 41, and hits the cylinder top surface 41C, the intake device 48 consisting of the carburetor 45, the air cleaner 47, etc. Traveling wind outlet 75 guided by members 41C and 48
is efficiently discharged from

Furthermore, since the engine hanger 31 is used as a closing member that closes the gap between the cylinder side portion 41B and the rear edge 75A of the opening, it is possible to discharge the traveling air from the traveling wind outlet 75 more efficiently. Even when a full-face ring type is provided by connecting the side cover 65 or the like to a vehicle body equipment member, the cooling efficiency of the engine can be improved.

Incidentally, the traveling wind introduced from the traveling wind intake 66 and flowing below the traveling wind outlet 75 cools the engine, and then is guided by the rear portion of the fairing 69E and the side cover 65 and is discharged to the rear of the vehicle body. In addition, the running air that cools the lower part 39 of the crankcase is transmitted to the rear end 69D of the lower part of the fairing below the step 83.
is ejected backwards.

(Effects of the invention) As is clear from the above explanation, according to the present invention, the running wind taken into the fairing from the running air intake can be efficiently discharged from the running air outlet, and when the full-flaring type is used. However, the cooling efficiency of the engine can be improved.

[Brief explanation of the drawing]

Figure 1 is a side view of the motorcycle, Figure 2 is a plan view of the same, Figure 3 is a front view of the same, Figure 4 is a side view of the motorcycle with the fairing removed, Figure 5 is a plan view of the same, and Figure 5 is a side view of the motorcycle with the fairing removed. Fig. 6 is a sectional view taken along the line - - in Fig. 1, Fig. 7 is a sectional plan view of the fairing portion, Fig. 8 is a perspective view of the fairing, Fig. 9 is a sectional view taken along the - line in Fig. 8, and Fig. 10. is a sectional view of the engine hanger portion. In addition, 1 in the drawing is a motorcycle, 7 is a body frame,
31 is an engine hanger, 33 is an engine, 39
41 is a crankcase, 41 is a cylinder, 63 is a fairing, 65 is a running air intake, and 69 is a running air outlet.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An engine having a cylinder disposed between front and rear wheels and tilted forward from a crankcase, a body frame having an engine hanger for supporting the engine, and the engine. a radiator disposed in front of the vehicle; a fairing that covers both sides of the engine from the front of the vehicle body; a running air intake opening opened in the front of the fairing; and openings opened on both sides of the fairing, respectively;
A motorcycle equipped with a running wind exhaust port formed with a trailing edge of the opening deviating inward in the vehicle width direction from a leading edge of the opening, wherein the radiator is installed upright in front of an upper surface of a cylinder, and the running wind exhaust port is It is formed on the side surface of a fairing on the upper side of the cylinder, an intake device such as a carburetor or an air cleaner is disposed above the cylinder, the engine hanger is placed close to both sides of the cylinder, and after the opening of the running air outlet. A fairing device for a motorcycle, characterized in that a rim is located close to the engine hanger. (2) The motorcycle fairing according to claim 1, wherein the side surface of the fairing is continuously connected to a vehicle body equipment member such as a side cover disposed near the side surface of the fairing. Device.