JPS6247756B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine cooling system for a so-called scooter type motorcycle, etc., which has a leg shield in front of a low step floor provided between front and rear wheels.

This type of vehicle has a problem in that it is difficult to install a water-cooled engine that requires a radiator due to its shape.

The present invention solves the above-mentioned problems, and provides a leg shield 4 at the rear of the step floor 3 in a scooter-type motorcycle, etc., which has a leg shield 4 in front of the low-floor step floor 3 provided between the front and rear wheels 1 and 2. A water-cooled engine 5 is mounted on the tower, a radiator 6 for cooling the engine is disposed at a position in front of the step floor below the leg shield, and an openable/closable ventilation opening is provided at the bottom of the leg shield behind the radiator.

In the illustrated example, a leg shield 4 is integrally and continuously provided above the front part of a low-level step floor 3 provided between the front and rear wheels 1 and 2, and the rear wheels 2, power unit 10, etc. are installed behind the step floor 3. This is applied to a so-called full-covered type scooter-type motorcycle equipped with a rear cover 8 for covering the vehicle.

The power unit 10, as shown in FIG. frame 1
It is supported by a link 13 and a rear suspension 14 on a rear frame 12 of No. 1 so as to be vertically swingable. 15 indicates a sheet.

On the other hand, the radiator 6 is placed in front of the step floor 3 using the open space at the bottom of the leg shield 4. In Figures 1 and 2, the trunk 16 is located in front of the upper part of the leg shield 4, and the front fender 17 is integrally formed with the leg shield 4, a radiator 6 is attached to the front lower part of the leg shield 4, and the front of the radiator 6 is covered with a cover 18. Reference numeral 19 denotes a running air introduction hole to the radiator 6. The running air that enters through the hole 19 cools the radiator 6, and then is discharged below the step floor 3 through the front surface of the leg shield 4. Alternatively, an exhaust hole may be formed on the side of the radiator 6 to exhaust the air laterally. A mudguard 20 prevents mud, water, etc. thrown up by the front wheels 2 from entering the radiator 6.

3 and 4 show a radiator 6 on the lower rear surface of the leg shield 4 in a vehicle that has a trunk 16a and a storage basket 21 on the upper part of the leg shield 4, and a front fender 17a rotates integrally with the front wheels 2. An example is shown in which the radiator 6 is attached and the rear of the radiator 6 is covered with a cover 18a. 19a is a running wind introduction hole.

Note that the radiator 6 is provided with a reserve tank 61 if necessary. In that case, the radiator 6 and the reserve tank 61 are preferably placed on the left and right sides of the leg shield 4 as shown in FIG. 4 to balance their weight. Further, the radiator 6 may be arranged on both the left and right sides of the leg shield 4.

Further, the radiator 6 and the engine 5 are communicated with each other through two water pipes 22a and 22b, as shown in FIG. 1, and coolant is circulated by a water pump 23 or the like. The water pipes 22a, 22b are attached to side frames 26, 26 provided on both left and right sides of a down tube 25 extending from the head pipe 24 to the rear frame 12 on the lower surface side of the step floor 3, as shown in FIG. Place them together. However, at least one of the water pipes 22a and 22b may be disposed within the down tube 25, or the cooling water may flow directly into the down tube 25.

Further, at the rear of the radiator 6, an openable and closable air outlet 27 is provided to guide the running air warmed by the radiator 6 to the feet of the occupants in cold weather, as shown in Fig. 6.
FIG. 7 illustrates its specific configuration. Figure 6a,
In b, both ends of a substantially rectangular damper 29 are rotatably attached to the edge of the opening 28 formed in the leg shield 4 with a shaft 30, and the scenery and wind direction can be adjusted by opening and closing the damper 29 with a lever 31. In the example shown in FIGS. 7a and 7b, a rotary damper 34 having a hole 33 of approximately the same shape and size as the fan hole 32 formed in the leg shield 4 is rotatably attached to the leg shield 4, and the rotary damper 34 is rotated. An example in which the air volume can be adjusted by adjusting the opening amount of the fan hole 32 is shown below.

In the present invention, since the radiator 6 is arranged at the lower part of the leg shield 4 as described above, the center of gravity of the vehicle body is lowered and stability is increased. Even in a vehicle equipped with 16, 16a or a storage basket 21, the radiator 6 can be arranged compactly without any problem by utilizing the open space at the bottom of the leg shield 4.

Moreover, since the radiator 6 and the engine 5 are arranged separately at the front and rear of the vehicle body, the load distribution between the front and rear wheels is good, and the heat source is dispersed, which is advantageous in terms of heat countermeasures.

Furthermore, since the radiator 6 is located at the front of the vehicle body, it is possible to make maximum use of the wind from the front to provide an efficient cooling device.

In addition, a vent 27 that can be opened and closed is provided at the bottom of the leg shield at the rear of the radiator, so that the wind heated by the radiator 6 is transferred to the step floor 3 in cold weather.
In this case, the radiator 6 is located in front of the step floor 3, so the warm air from the radiator 6 can be directed directly to the feet of the passengers without using a duct. It is something that can be guided.

[Brief explanation of the drawing]

Fig. 1 is a side view of a motorcycle equipped with the engine cooling system of the present invention, Fig. 2 is a sectional view taken along the line of Fig. 1, Fig. 3 is a side view of a part of a modified motorcycle, and Fig. 4 is Fig. 3 is a sectional view taken along the line, Fig. 5 is a sectional view taken along the line shown in Fig. 1, Figs. 6 a and b are perspective views and longitudinal sectional views of an example of the configuration of the air outlet for the occupants, and Figs. 7 a and b These are a front view and a longitudinal cross-sectional view of the modified example. 1 is the front wheel, 2 is the rear wheel, 3 is the step floor, 4
is the leg shield, 5 is the engine, 6 is the radiator, and 27 is the air vent.

Claims (1)

[Claims] 1. In scooter-type motorcycles, etc., which have a leg shield in front of a low step floor provided between the front and rear wheels, a water-cooled engine is mounted behind the step floor, and a radiator for cooling the engine is mounted on the leg shield in front of the step floor. An engine cooling system for scooter-type motorcycles, etc., which is located at the front of the step floor at the bottom of the leg shield and has an openable and closable air outlet at the bottom of the leg shield behind the radiator.