JPH05178249A - Oil tank device for scooter - Google Patents

Abstract

PURPOSE:To provide an oil tank for a scooter which can increase the oil loading quantity. CONSTITUTION:As for a scooter in which an engine unit 2 is connected in swingable manner and supported by a rear suspension unit 5 on a car body frame 1, an oil tank 10 is constituted of a part 10a positioned in the upper part, penetrating through a rear fender 8, and a part which extends behind the rear suspension 5 above the engine unit 2 and is positioned on the side part of a rear tire 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter oil tank device.

[0002]

2. Description of the Related Art In a scooter, as shown in FIG. 7, an engine unit 2 as a power unit is vertically swingably connected to a body frame 1 by a shaft 3, and a rear wheel 4 is supported on a rear portion of the engine unit 2. The engine unit 2 is supported by the rear suspension 5 on the vehicle body.
There is one in which the rotation of the engine 6 is transmitted to the rear wheel 4 through an internal transmission mechanism.

The oil tank 7 of such a scooter is installed on the rear fender 8 as shown in FIGS. 8 and 9, and the fuel tank 9 is installed next to the oil tank 7.

[0004]

In the conventional structure, since the oil tank 7 is installed on the rear fender 8, the tank capacity is small due to the installation space and a large amount of oil cannot be loaded. .. Further, if the oil tank 7 is increased in size in order to increase its capacity, the tank capacity of the fuel tank 9 is reduced, and the fuel loading amount is reduced.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an oil tank device for a scooter capable of increasing the amount of oil loaded.

[0006]

In order to solve the above problems, an oil tank device for a scooter according to the present invention is a scooter in which an engine unit is swingably connected to a body frame and is supported by a rear suspension unit. , A portion that penetrates through the rear fender and is located above the rear fender, and a portion that extends rearward of the rear suspension above the engine unit and is located on a side portion of the rear tire.

[0007]

Since the oil tank is composed of the upper portion of the rear fender and the lower portion of the rear fender and extends rearward, the oil storage amount can be significantly increased and the oil load amount can be increased. You can

[0008]

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

The oil tank 10 is shown in FIG.
As shown in the mounted state in FIGS. 1 to 3, a portion 10 a located above the fender 8 attached to the vehicle body frame 1 so as to cover the upper portion of the rear tire 4, and the rear fender 8
And a portion 10b located below the rear suspension 5 and extending along the upper side portion of the rear tire 4 to pass through, and has a substantially L-shape when viewed from the side,
It is formed in a vertically long rectangular shape when viewed from the front. The lower portion 10b constitutes the main tank portion of the oil tank 10. Part 1 located above the rear fender 8
An oil injection opening 11 is provided at the upper end of 0a and is sealed by an oil cap 12. Rear fender 8
In front of the bottom of the portion 10b located at the bottom of the
Therefore, the spout 13 and the oil pump 14 installed in the engine unit 2 near the engine 6 are connected by the oil hose 15, and the oil pump 14 pumps the oil from the oil tank 10 to force the engine 6 Oil is supplied to the parts inside that require oil lubrication.

A fuel tank 9 is mounted on the rear fender 8 on the side of the portion 10a of the oil tank 10 which projects above the rear fender 8. The oil tank 10 and the fuel tank 9 are covered with a cover 16 serving as a rear cowling, and the seat 1 is provided in front of the cover 16.
7 is placed. A part of the fuel tank 9 bulges sideways, and the bulged portion 9a is a lower portion 10 of the oil tank 10.
Since it is located above b, the tank capacity of the fuel tank 9 can be increased correspondingly.

The oil pump 14 is shown in FIGS.
The gear 19 of the drive shaft 18 is meshed with the gear 21 on the crank shaft 20 of the engine 6 as shown in FIG.
The oil pump 14 is driven according to the rotation of 0. In FIG. 4, reference numeral 22 denotes a crank bearing that supports the crankshaft 20, which is mainly to be lubricated, 23 is a drive pulley of a V-belt transmission mechanism as a power transmission mechanism provided at one end of the crankshaft 20, and 24 is a drive pulley. An engine cooling fan provided at the other end of the crankshaft 20.

At the rear part of the engine unit 2, a driven pulley 26, which is driven to rotate by a drive pulley 23 of a V-belt transmission mechanism via a V-belt 25, is rotatably supported by a mission drive shaft 27. The driven pulley 26 is connected to the mission drive shaft 27 via a centrifugal clutch mechanism 28. This mission drive shaft 27
From the rear wheel shaft 29 to the transmission mechanism 3 which is a gear reduction mechanism
Rotation is transmitted through 0.

Incidentally, in FIG. 1 and FIG.
Is a muffler, 34 is an air filter, 35 is a cap for the fuel tank 9, 36 is a fuel level gauge cap, and 37 is a battery.

Since the oil tank 10 according to the present invention is composed of the upper portion 10a of the rear fender 8 and the main tank portion 10b of the lower portion, the tank capacity is increased and the dead space below the rear fender 8 is increased. Since the tank capacity of this portion 10b can be made large by utilizing, the position of the center of gravity is lowered and the running stability is improved. Further, when the fuel tanks 9 are arranged side by side on the rear fender 8, the upper portion 10a of the oil tank 10 is positioned in the recessed portion in which one corner of the fuel tank 9 is recessed as shown in the example. As a result, the tank capacity of the fuel tank 9 can be increased, whereby the loading amount of both oil and fuel can be greatly increased.

[0015]

As described above, according to the present invention, the dead space under the rear fender of the scooter can be effectively used to significantly increase the tank capacity of the oil tank as compared with the conventional one, and the filter on the rear fender can be effectively used. When the fuel tanks are arranged in parallel, the tank capacity of the fuel tank can be increased.

[Brief description of drawings]

FIG. 1 is a side view showing a scooter provided with an oil tank device according to the present invention.

FIG. 2 is a plan view showing the scooter of FIG. 1 like a skeleton.

FIG. 3 is a view of the scooter of FIG. 1 seen from the rear.

FIG. 4 is a horizontal sectional view of the engine unit.

5 is a vertical cross-sectional side view of the engine unit shown in FIG.

FIG. 6 is a perspective view of an oil tank.

FIG. 7 is a side view of a conventional scooter.

FIG. 8 is a side view of the scooter showing an oil tank device portion of a conventional scooter.

9 is a rear view of the scooter shown in FIG.

[Explanation of symbols]

 1 Body Frame 2 Engine Unit 4 Rear Wheel 5 Rear Suspension Unit 6 Engine 8 Rear Fender 9 Fuel Tank 9a Swelling Part 10 Oil Tank 10a Upper Part 10b Lower Part 14 Oil Pump 15 Oil Hose 16 Cover 18 Oil Pump Drive Shaft 20 Crankshaft 28 Rear axle

Claims (1)

[Claims] 1. In a scooter in which an engine unit is swingably connected to a body frame and is supported by a rear suspension unit, a portion of an oil tank that penetrates a rear fender and is located above the scooter, and a rear suspension above the engine unit. An oil tank device for a scooter which is configured to extend rearward of the rear tire and a portion located on a side portion of a rear tire.