JPH0352397B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radiator device for a motorcycle. In motorcycles, the radiator is generally placed diagonally above the rear of the front wheel where the running wind acts effectively, but in order to improve the cooling effect, a sub-radiator is provided in addition to the above-mentioned radiator. A vehicle in which a radiator is disposed between the front wheels and the engine is known. At this location of the sub-radiator, mud, sewage, etc. are often splashed up by the front wheels, so measures against mud, sewage, etc. are desired.

The present invention was made in view of such circumstances,
It is an object of the present invention to provide a radiator device for a motorcycle that can prevent mud, sewage, etc. from entering the radiator and can efficiently introduce only cooling air into the radiator.

In order to achieve this object, in the radiator device for a motorcycle according to the present invention, a radiator is provided on the front surface of an under cowl that covers the radiator disposed between the engine and the front wheel. A front grill consisting of a plurality of air guide plates arranged vertically and adjacently at intervals of An opening for draining water is formed on the bottom.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, an engine 4 is disposed between a front wheel 2 and a rear wheel 3 of a motorcycle 1, and is attached to a frame 5 via a stay (not shown).
A main radiator 6 is disposed diagonally above and behind the front wheels 2, and a sub-radiator 7 is further disposed between the front wheels 2 and the engine 4. The main radiator 6 is attached to the frame 5 via a stay 8 so as to be inclined forward with respect to the direction of travel of the vehicle (to the left in the figure).
The sub-radiator 7 is attached to the frame 5 via a stay 9 so that the sub-radiator 7 is substantially upright with respect to the traveling direction and its lower end is located below the center of rotation O of the front wheel 2. The sub-radiator 7 is surrounded by an under cowl 10 as shown in FIGS. 2 to 4.

In Figures 2 to 4, under cowl 1
0 consists of a front part 11 that is slightly inclined rearward with respect to the traveling direction of the vehicle, and a lower part 12 that extends rearward from this front part 11 along the frame 5 and has a streamlined outer periphery. The portion 11 has an opening 13 in the front center thereof, and furthermore, openings 28a and 28b for draining water are formed in the bottom surface 10a. Then, it is attached to the frame 5 by screwing through attachment holes 14a and 14b formed at the upper end of the front part 11 and the rear end of the lower part 12, respectively. One opening 28b for draining water is located at the rear of the sub-radiator 7. A front grille 15 as shown in FIGS. 5 and 6 is disposed in the front opening 13 of the under cowl 10 so as to be inclined generally rearward with respect to the traveling direction of the vehicle.

In FIGS. 5 and 6, the front grille 15 consists of a plurality of air guide plates 16 extending in the left-right direction of the vehicle body (left-right direction in FIG. 5) and arranged vertically adjacent to each other at predetermined intervals. Fitting holes 18a, 18 provided above the front opening 13 of the under cowl 10 are connected to the two protrusions 17a, 17b provided.
b (shown in FIG. 4), and the bottom surface 10a of the under cowl 10 (see FIG. 2) is fitted into the mounting hole 19a of the mounting portion 19 extending from the lower end with a substantially inverted L-shaped cross section.
is screwed to. As is particularly clear from FIG. 6, the plurality of air guide plates 16 are provided so that the front side of the vehicle body is higher than the rear side. According to this, generally a large amount of cooling air enters from above, and vice versa. Since most of the mud and the like fly from below, the cooling air easily enters the under cowl 10, while the mud and the like are repelled by the lower surface of the air guide plate 16 and are difficult to enter.

As is particularly clear from FIGS. 5 and 6, behind the front grill 15, there is a net-shaped rear side as shown in FIG. A grill 20 is arranged,
A predetermined distance is provided between the rear grill 20 and the sub-radiator 7 so that they do not come into contact with each other. The rear grill 20, as shown in FIG. The mesh is formed so that the distance between the plates 16 or less is equal to or less than that, and the direction in which the holes of the mesh come out is directed upward rather than horizontally. According to this, mud and the like that have passed through the front grille 15 are reliably blocked by the rear grille 20. The rear grille 20 is fitted into the upper fitting hole 15a of the front grille 15 from the back side with a protrusion 23 fixed to the upper part of the holder 22, and is fitted into the mounting hole 24a of the mounting part 24 fixed to the lower part of the holder 22. The front grill 1 is tightened and fixed to the front grill 15 by screws 25.
It becomes integral with 5. The screw 25 has an outer diameter larger than the inner diameter of a hole 26 formed in the mounting portion 19 of the front grille 15, and is threaded into the hole 26 while cutting the screw hole. The rear grill 20 is the front grill 15
It is also removable from the under cowl 10, and the lower end of the mesh portion 21 is configured to extend downward from the lower end of the sub-radiator 7.

Next, the operation of the radiator device according to the present invention will be explained. When the vehicle is running, the wind that enters the front grille 15 from above along the front fender 27 is guided by the plurality of baffle plates 16 and introduced into the under cowl 10, and then the wind pressure blows the rear grille 20. It passes through the mesh part 21 and reaches the sub-radiator 7. On the other hand, mud and sewage splashing up from below against the front grille 15 are prevented from directly entering the under cowl 10 by being attached to the lower surface of the baffle plate 16, and the kinetic energy of the mud and sewage is absorbed. By attaching it to the air guide plate 16, it is converted into potential energy, and by natural fall, it is attached to the mesh part 21 of the rear grille 20,
Mud, sewage, etc. are carried to the lower end of the mesh portion 21 and removed by utilizing the surface tension effect of the mesh, thereby preventing them from entering the under cowl 10. The mud, sewage, etc. that have fallen from the lower end of the mesh part 21 are removed from the water drain opening 28 of the under cowl 10.
It is discharged to the outside from ports a and 28b.

Other embodiments of the present invention are shown in FIGS. 8 to 14. In this embodiment, a mounting hole 29 is formed in the lower part of the front grill 15 as shown in FIGS. 12 and 13, and a mounting hole 29 is formed in the lower part of the rear grill 20 as shown in FIG. A hole 30 is formed for the front grill 15 and the rear grill 20.
For the under cowl 10, the upper end protrusion 17a,
17b fits into the fitting holes 18a, 18b and the eighth
As shown in FIGS. 11 to 11, the under cowl 10
The under cowl 10 is attached by being tightened and fixed in the holes 29 and 30 from the front of the under cowl 10 using a screw (not shown) that is screwed into a screw hole 31 formed below the opening 13 of the under cowl 10. According to this configuration, the front grill 15 and the rear grill 20 can be easily removed from the front of the under cowl 10 even when the under cowl 10 remains attached to the vehicle body.

As is clear from FIG. 14, the mesh of the mesh portion 21 of the rear grille 20 is formed vertically to improve the downward flow of adhered mud, sewage, etc. Further, the lower end of the mesh portion 21 extends downward from the lower end of the holder 22, so that even if a large sub-radiator 7 is used, the overall size of the rear grille 20 can be changed. Even if there is no downwardly extending portion 2 of the mesh portion 21
Since the sub-radiator 1a can be located below the lower end of the sub-radiator 7, mud, sewage, etc. adhering to the mesh portion 21 can be reliably dropped below the sub-radiator 7.

Further, as shown in FIGS. 8 to 11, openings 28a and 28b for draining water are formed in the bottom surface 10a of the under cowl 10, as in the above-described embodiment, and mesh section 21
The opening 28 is designed to prevent mud, sewage, etc. that have fallen from the lower end of the
It is designed to be discharged to the outside from ports a and 28b. In addition, in FIG. 10, 33 is an exhaust pipe.

A modification of the rear grille 20 is shown in FIG. 15, in which a holder 22 and a mounting portion 23,
A connecting portion 32 is integrally provided between the connecting portion 24 and the connecting portion 32 . According to this configuration, the amount of mud, sewage, etc. that naturally falls from the air guide plate 16 of the front grille 15 and adheres to the mesh portion 21 is reduced, so that the cooling air can pass through the mesh portion 21 more easily.

Further, as shown in FIG. 16, the rear grill 20
By attaching it in a state that is tilted forward with respect to the front grille 15, the flow of cooling air can be utilized, so that the downward flow of mud, sewage, etc. adhering to the mesh part 21 can be improved.

Note that the present invention is not limited to application to a motorcycle equipped with two radiators, the main radiator 6 and the sub-radiator 7, but is equipped with a single radiator, and this radiator is connected to the front wheel 2 and the engine 4. The present invention can also be applied to a motorcycle having a configuration in which it is disposed between the two.

As described above, according to the present invention, on the front surface of the under cowl that covers the radiator disposed between the engine and the front wheels, the under cowl extends in the left-right direction of the vehicle body and is arranged vertically adjacent to each other at predetermined intervals. A front grill consisting of a plurality of air guide plates is provided, and a net-shaped rear grill is placed behind the front grill so as not to touch the radiator, thereby preventing dirt, sewage, etc. from entering the under cowl. This can be reliably prevented and only the cooling air can be properly introduced into the radiator.

[Brief explanation of drawings]

FIG. 1 is a side view including a partial cross section of a motorcycle equipped with a radiator device according to the present invention, and FIGS. 2 to 7 are diagrams for explaining an embodiment of the present invention, and FIG. , Figures 3 and 4 are a plan view, side view, and front view of the under cowl, Figure 5 is a front view of the front grille, Figure 6 is a sectional view taken along line A-A in Figure 5, and Figure 7 is a A front view of the rear grille, and FIGS. 8 to 14 are diagrams for explaining other embodiments of the present invention, and FIGS. 8, 9, and 10 are plan views of the under cowl, A side view and a front view, FIG. 11 is a sectional view taken along line B-B in FIG. 10, FIG. 12 is a front view of the front grill, FIG. 13 is a sectional view taken along line C-C in FIG. 12, and FIG. FIG. 15 is a front view of the rear grill, FIG. 15 is a sectional view showing a modification of the rear grill, and FIG. 16 is a sectional view showing a modification of the mounting state of the rear grill. Explanation of symbols of main parts, 2... Front wheel, 4... Engine, 6... Main radiator, 7... Sub radiator, 10... Under cowl, 15... Front grill, 16... Wind guide plate, 20... ...Rear grill.

Claims (1)

[Claims] 1. A radiator disposed between an engine and a front wheel, an under cowl that covers the radiator, and a plurality of radiators extending in the left-right direction of the vehicle body on the front surface of the under cowl and arranged vertically adjacent to each other at predetermined intervals. A radiator device for a motorcycle, comprising: a front grille made of a wind guide plate;
A radiator device for a motorcycle, characterized in that a net-shaped rear grill is disposed behind the front grill without contacting the radiator, and an opening for draining water is formed in the bottom surface of the under cowl.