JPS6230863Y2 - - 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 installed in the covered type scooter as described above. I will provide a.

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 for steering.

The engine 7 is mounted below the seat 1. In the figure, the engine 7 is constructed integrally with a power unit 8 that houses a transmission system, and its front part is attached to a support shaft 9 on the vehicle body.
It is swingably supported by. 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. Cooling water for a water-cooled engine is cooled by a radiator during operation and is circulated and supplied to the engine. In the present invention, the radiator 14 is installed along the inner surface of one side of the body cover 13. A louver 15 is provided on one side of the body cover 13 corresponding to the radiator 14 to communicate between the inside and outside of the body cover 13. The louver 15 is provided with a separate louver plate 16 that can be opened and 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 side-opening inlet, and 20 indicates an outlet. Discharge port 20
extends the duct 21 and supports the radiator 14 at its tip. At the same time as the engine swings, the radiator 14 also swings along the back surface of the louver 15. 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.

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 heated 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 one side of the body cover 13.

In the above example, the radiator 14 is supported by the duct 21 and swings.
The radiator 14 may be fixed to the body cover side, and a bellows may be interposed in the middle of the duct to absorb swings from the engine side. In addition, in large scooters other than those shown in the illustration, the engine is fixedly mounted.
The rear wheel is suspended by a swing arm. In this case, the muffler and other parts are fixedly installed without swinging, and the duct leading from the air pump linked to the engine can be fixedly installed through these gaps. Furthermore, the type of air pump can be selected as appropriate, such as an axial flow type or a transverse flow type, and the method of interlocking with the engine is not limited to the illustrated example. Electric fans can also be used.

As mentioned above, the radiator device of the scooter of the present invention is
A radiator is installed along the inner surface of one side of the body cover, and a louver is provided on the corresponding side of the body cover, so that the heat exchange air that is forced into the radiator flows through the louver with little resistance. Moreover, a rearward air flow is generated on the side surface of the body cover while the vehicle is running, and this flow promotes the release of heat exchange air, thereby increasing the ventilation efficiency of the radiator. Therefore, sufficient engine cooling performance can be obtained by reducing the capacity of the radiator and downsizing the air pump and electric fan.Since the distance to the engine is close, the conduit connecting to the water jacket and water pump is short, and the overall body size is reduced. The space inside the cover can be used to store the radiator compactly, and the radiator housed within the body cover is protected from interference with other objects, and has the advantage of not being an obstacle to appearance or operation.

[Brief explanation of the drawing]

FIG. 1 is a side view of a scooter equipped with one 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 radiator device, and FIG. 4 is a plan view thereof. 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] A 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 a front fork with a handle and a suspended front wheel so that it can be steered. The engine is mounted below the seat, and the rear wheels driven by the engine are suspended behind it. A footboard is placed at the bottom along the U-shaped body, and a leg shield is placed at the front. The engine and rear wheels are mounted under the seat. In a scooter constructed by covering the upper half etc. with a body cover, a water-cooled engine is mounted, and a radiator that cools the cooling water is installed along the inner surface of one side of the body cover, and a body cover corresponding to the radiator is installed. A radiator device for a scooter, characterized in that a louver is provided on one side, and heat exchange air supplied to the radiator by an air pump is discharged to the outside of the body cover through the louver.