JPS6230865Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a radiator device for a scooter equipped with a water-cooled engine.

A radiator that dissipates heat by air is used to cool the cooling water of a water-cooled engine.
In wheeled vehicles, the engine is generally mounted at the bottom of the center of the vehicle body, so the radiator is installed along the front of the vehicle body behind the front wheels to make full use of the airflow caused by driving, and also to reduce the engine water. The conduit connecting between the jacket and the jacket can be shortened. The heat-exchanged air can be released widely into the atmosphere, such as below the vehicle body and on both sides, making this point easy to handle. Scooters lower the front of the seat and provide a footboard to rest your feet on, so the engine is mounted at the bottom of the vehicle, closer to the rear.
Moreover, there is a large body cover under the seat.
The engine part and the upper half of the rear wheel are housed inside to give a unified look. Therefore, when using a water-cooled engine,
It is difficult to adopt a layout similar to that of general motorcycles, where the radiator is installed at the front of the vehicle body.

The present invention is a scooter radiator device that effectively utilizes space, is compact, and has sufficient exhaust circulation for cooling air to increase cooling efficiency for the water-cooled engine mounted on the covered type scooter as described above. provide.

The figure will be explained in detail below.

The figure shows an example of a small scooter. The seat 1 is placed near the rear of the upper center of the vehicle body in terms of layout, and the vehicle body in front of it is curved low into a U shape, with a footboard portion 2 at the bottom and a leg shield portion 3 at the front. A driver sits on a seat 1 and takes a comfortable posture with his legs resting on a footboard section 2. A front fork 4 is supported by a steering shaft at the upper front end of the U-shaped front vehicle body. A front wheel 5 is suspended from the lower end of the front fork 4, and a handle 6 is fixed to the upper end so that the bicycle can be steered.

The engine 7 is mounted below the seat 1. In the figure, an engine 7 is constructed integrally with a power unit 8 containing a transmission system, and its front portion is swingably supported by a support shaft 9 on the vehicle body. A rear wheel 10 is pivotally supported at the rear end of the power unit 8, and a shock absorbing unit 11 is interposed therebetween. All engine accessories such as a muffler 12, an air cleaner (not shown), and a carburetor are also integrally attached and swing together with the rear wheel 10 so as to be able to absorb shock. Each of these devices under the seat is covered with a body cover 13 as much as possible in view of appearance requirements, and this, together with the footboard portion 2, is a characteristic of the scooter.

The above is an outline of the general configuration of a scooter.
The engine 7 in the present invention is a water-cooled engine. During operation, the cooling water of a water-cooled engine is cooled by a radiator and circulated to the engine. In the present invention, the radiator 14 is installed along the rear inner surface of the body cover 13. A louver 15 is provided at the rear of the body cover 13 corresponding to the radiator 14 to communicate between the inside and outside of the body cover 13. Louva 15
is provided with a separate louver plate 16 that can be opened/closed or detached. It may also be attached directly to the body cover 13.

On the other hand, an air pump (centrifugal spiral type) 18 is connected to one end of the crankcase 17 of the engine 7, and its blades are directly connected to the end of the crankshaft. Reference numeral 19 indicates a suction port that opens to the side, and 20 indicates a discharge port. Discharge port 20
is led to the front of the radiator 14 by a duct 21. A bellows 22 is interposed in the middle of the duct 21 to absorb swings and vibrations of the engine, etc. A conduit 23 is connected to the upper part of the water jacket of the engine 7 from the upper part of the radiator 14, and a conduit 24 is connected to the water pump outlet housed in the crankcase 17 from the lower part. The conduits 23 and 24 are flexible and absorb swings and vibrations of the engine and the like.

As the engine 7 rotates, a water pump and an air pump are driven, and the water pump pumps up cooling water from the water jacket and sends it to the radiator 14 through the conduit 24. The air pump sucks air from the side and passes it through the duct 21 to the radiator 14.
send to In the radiator 14, heat is exchanged between the high temperature cooling water released by cooling the engine and the low temperature air drawn from the atmosphere, and the cooling water is cooled and returns to the water jacket through the conduit 23.
It is used again for engine cooling. Air warmed by heat exchange passes through the louver 15 from behind the radiator and is discharged into the atmosphere from the rear of the body cover 13.

In large scooters, the engine is fixedly mounted, and the rear wheel is suspended by a swing arm. In this case, the muffler and other parts are fixedly installed without swinging, so the duct leading from the air pump linked to the engine can be fixedly installed through these gaps, giving a relatively large degree of freedom. In addition, regardless of whether the air pump is large or small, the type of air pump can be selected as appropriate, such as axial flow type or cross flow type. The method of interlocking with the engine is not limited to the example shown. Furthermore, by using an electric fan that is not linked to the engine, the length of the duct can be saved.

5 and 6 show another embodiment of the present invention using an electric fan. Radiator 14 is body cover 1
3 Installed along the rear inner surface, body cover 13
Similarly, a louver 15 is provided at the rear. Separate louvers 25 are provided on both sides of the body cover 13,
25 is opened, and ducts 26, 26 are led out from the back surface thereof, merge with the duct 27 at the center, and are connected to the front surface of the radiator 14. An electric fan 28 is installed at the starting end of the duct 27. The electric fan 28 is driven to send air sucked in from the louvers 25, 25 to the radiator 14, and after cooling the water in the radiator 14, the air passes through the louver 15 and is released into the atmosphere again.

As described above, the radiator device for the scooter of the present invention includes a radiator installed along the rear inner surface of the body cover, a louver provided at the corresponding rear part of the body cover, and heat exchange air forced into the radiator through the louver. This system is designed to reduce the back pressure of the airflow passing through the radiator, and since the rear of the body cover is a place where negative pressure is generated when driving, it also has a suction effect and improves the ventilation efficiency of the radiator. Make it expensive. Therefore, the capacity of the radiator can be set small, and the air pump and electric fan used for blowing air can be downsized to sufficiently cool the engine, and the space inside the body cover can be used effectively to make it more compact. .
The air after heat exchange is released from the rear of the vehicle body, so it does not become an obstacle, and the radiator, which is housed in the rear part of the body cover, is protected from interference with other objects, and it does not interfere with the appearance or operation. There are effects such as not being

[Brief explanation of the drawing]

FIG. 1 is a side view of a scooter equipped with an embodiment of the radiator device of the present invention, FIG. 2 is a top view of the same, and FIG.
The figure is an enlarged side view showing the arrangement of the radiator device, FIG. 4 is a plan view of the same, and FIG. 5 is a side view of a scooter equipped with another embodiment of the radiator device of the present invention.
FIG. 6 is a cross-sectional view of the main part taken along the line A--A in FIG. 5. 1... Seat, 2... Footboard section, 3...
Leg shield part, 4... Front fork, 5... Front wheel, 6... Handle, 7... Engine, 10...
Rear wheel, 13...body cover, 14...radiator, 15...louver.

Claims (1)

[Scope of utility model registration request] The seat is placed near the center rear of the upper part of the vehicle body, and the vehicle body in front of the seat is curved low into a U-shape, and a steering shaft installed at the upper front end supports the front fork, which has a handle and suspends the front wheels, so that it can be steered. , the engine is mounted below the seat, the rear wheels driven by the engine are suspended behind it, a footboard is placed at the bottom along the U-shaped body, a leg shield is placed at the front, and the engine and rear wheels are mounted under the seat. In a scooter constructed by covering the upper half of the wheels with a body cover, a water-cooled engine is mounted, and a radiator for cooling the cooling water is installed along the rear inner surface of the body cover, and a rear part of the body cover corresponding to the radiator is installed. A radiator device for a scooter, characterized in that a louver is provided in the radiator, and heat exchange air supplied to the radiator by an air pump is discharged to the outside of the body cover through the louver.