JPH0136708Y2 - - 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 cooling air circulation and exhaust to increase cooling efficiency for the water-cooled engine installed in 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 for steering.

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 arranged as follows.

An axial flow air pump is constructed with vanes 16 connected to the crankshaft 15 on one side of the engine crankcase 17. The outside of the vane 16 is opened outward as it is to serve as an intake port 19, and the inside is open downward. This is used as the discharge port 20. 22 indicates a partition between the crank chamber and the air pump casing. The suction port 19 is an opening having a shape corresponding to the radiator 14, and the radiator 14 is installed with this opening closed. radiator 14
The conduit 23 connects to the upper part of the water jacket of the engine 7 from the top, and the crankcase 1 connects to the bottom of the engine 7.
A conduit 24 is connected to the water pump outlet housed in the water pump 7.

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 radiator 14 on the side. radiator 14
Heat exchange occurs between the high-temperature coolant that cools the engine and warms it, and the low-temperature air sucked in from the atmosphere. The cooling water is cooled and returns to the water jacket through conduit 23, where it is again used to cool the engine. The air warmed by the heat exchange is discharged downward from behind the radiator through the air pump through the discharge port 20.

Although the engine is fixedly mounted on a large scooter and does not swing, the radiator device can of course be configured in the same way. Alternatively, the direction of action of the axial air pump may be reversed so that air is sucked in from the discharge port 20 and air discharged from the suction port 19 is made to flow to the radiator 14.

As mentioned above, the radiator device of the scooter of the present invention has a radiator installed at the side end of the crankcase,
The air for heat exchange is supplied by an axial flow air pump directly connected to the engine, which is located just inside the radiator, and a large amount of air can be supplied with low flow resistance, so a small radiator can sufficiently cool the engine. , it won't be particularly difficult to install. Since the engine and radiator are close to each other, the piping can be shortened, and the air released downward does not become an obstruction, which has the advantage of being less likely to interfere with appearance or operation.

[Brief explanation of drawings]

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 arrangement of the radiator device, Fig. 4 is a plan view of the same, and Fig. 5 is Fig. 4 A-A of the same.
FIG. 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...crankshaft, 16...blade.

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 front upper end supports the front fork, which has a steering wheel and the front wheels are suspended, 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 below the seat. A scooter is constructed with a body cover covering the upper half of the wheels, etc., and is equipped with a water-cooled engine.A blade is supported on one side of the crankcase by the end of the crankshaft, and the outside of the blade is opened outward as it is. 1. A radiator device for a scooter, comprising: an axial flow type air pump whose inner side opens downward; and a radiator installed so as to close the outer opening.