JPS5931503Y2 - 2. Oil tank device for tricycle - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of oil tank devices for two- and three-wheeled vehicles, and in particular, a fuel tank is provided across a backbone frame extending rearward from a head tube, and a recess is provided at the rear of the backbone frame. The oil tank is stored in the recess above the front part of the oil tank that is fixed to the backbone frame, and the rear part of the oil tank is covered with the lower surface of the front of the seat, and the oil tank is protected using existing parts. The present invention relates to an oil tank device that is positioned closer to the center to securely hold the oil tank, provide smooth oil supply, and reduce parts.

Conventionally, the oil tank of the IJ4, which uses a two-stroke engine and has a separate oil supply system, is covered with a side cover under the seat. In addition, when the oil tank is molded from synthetic resin, the protective member is also required to have high strength, which increases the number of parts and increases the cost.

Additionally, the fuel tank and oil tank are located far apart, so if the center of gravity of the oil tank deviates from the center and the vehicle drives on rough terrain, it may not synchronize with the fuel, which may impede the smooth supply of oil. There is.

The present inventor devised the present invention in order to solve the above-mentioned problems in attaching an oil tank, especially when the oil tank is molded from synthetic resin or the like and requires protection from the outside.

The purpose of this invention is to straddle the fuel tank on the backbone frame that extends rearward from the head tube, form an upward recess at the rear of the fuel tank, and form an upward recess at the rear of the fuel tank, which is fixed to the backbone frame at the upper front and left and right sides of the oil tank. In addition to covering the oil tank with the recessed part of the fuel tank, the rear part of the oil tank is covered with the front part of the seat, using existing parts to reliably protect the oil tank, reducing the number of parts and cost, and reducing the number of parts. To provide an oil tank device in which a tank is arranged at the same position as a fuel tank, the center of gravity is brought closer to the center, and smooth oil supply is achieved.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment is an example applied to a tricycle, and FIG. 6 is a perspective view of the frame, in which the frame 1 includes a helad tube 2, a backbone frame 3 extending behind it, and a head tube 2.
It consists of left and right down tubes 4, 4 disposed from the rear to the rear, and a cross member 5 that joins the rear ends of the frame 3 and the rear ends of the down tubes 4, 4.

Bracket from the L-shaped rear of the down tube 4°4 to the rear)
A swing arm-shaped rear fork 6 is pivotally extended through the rear fork 6a, a bearing member 6b is horizontally mounted on the rear end of the rear fork 6, and a single traction unit 7 is installed between the bearing member 6b and the cross member 5. The axles of left and right rear wheels 8, 8 are supported horizontally by the member 6b.

Further, upper and lower bridges 9, 9 are supported on the head tube 2 so as to be freely steerable, and front forks 1 are supported on the bridges 9, 9.
The left and right upper members 10a, 10a of 0 are supported, and the lower member supports one front wheel 11.

As shown in FIGS. 4 and 5, there is a handle 12 on the bridge, a headlight 13 in front of it, a front fender 14 on the front wheels, and a rear fender 15 on the rear wheels 8, 8. Each arrangement is also down tube 4
, 4, an engine unit 16 such as an engine and a transmission case is mounted.

In the above, the fuel tank 1T is disposed above the engine unit 16 on the front part of the backbone frame 3, and the tank 17 has an inverted U-shape end and is disposed astride the frame 3,
The front portion is held by engaging the engaging portions 17a protruding from the left and right inner walls of the inverted U-shaped front portion with the engaging portions 3a protruding from the front left and right sides of the frame 3, and the flat surface extending toward the rear of the tank. V-shaped bracket N
The rear end of Tb is connected to a bracket (3b) protruding from the frame 3 via a cushion rubber or the like with a bolt 18, and the tank 17 is straddled and connected to the front part of the frame 3.

At the rear of the fuel tank 17, there is a recess 17c that extends upward.
is formed, the front wall 17d of this is upright, the upper wall 17e is flat, the rear end of the upper wall 17e is opened upward 17f, and the left and right walls 17g, 17g are open at the top and bottom at the rear end.
Constructed as.

Therefore, a space is formed between this rear part and the corresponding part of the frame 3.

The oil tank 19 is molded from synthetic resin, etc., and is provided with plaques N9a and 19b on the front and rear sides of the frame 3, and is fastened to the plaques 3c and 3d formed on the sides of the frame 3 with bolts 20. The recess 17c is small.
The tank 19 has a front half and a middle part accommodated in the recess 17c, and an upper wall 17e of the recess 17c.
The upper and left and right upper portions are held down by a cushioning material 21 such as rubber attached to the lower surface.

Therefore, the oil tank 19 has a fuel tank recess 17c at the front.
The front wall 17d is the upper part, the upper wall 17e is the upper part, and the side walls 17 are the left and right parts.
protected by g.

The rear of the tank 19 has a recess 1 with an open top 17f.
Tank cap 1 between rear left and right side walls 17g of 7c
9c is removed from above the opening 17f so that oil can be injected.

The above upper part is opened, and the rear part of the fuel tank 17 where the tank cap 19c is exposed is covered by the front part 22a of the seat 22. In other words, the rear part of the oil tank 19 is covered by the front part of the seat, and the seat 22 can be raised and lowered. Alternatively, it can be attached and detached freely, and the cap 1
9c can be opened and closed.

In the example shown above, the present invention is applied to a tricycle, but it goes without saying that the present invention can also be applied to a two-wheeled vehicle.

As is clear from the above, according to the present invention, most of the oil tank faces inside the fuel tank and is protected by this, and the rear part is covered and protected by a sheet, and the oil tank can be securely covered with the existing fuel tank and sheet. It can be protected, does not require an oil tank protection cover, etc., and reduces the number of parts.
Cost reduction can be achieved.

Also, since the oil tank is installed at the same location as the fuel tank, the center of gravity moves closer to the center, and the oil tank moves with the vehicle body in synchronization with the fuel tank, so the movement of the curved surface also synchronizes.
No oil supply obstruction occurs.

It has the advantage of providing smooth oil supply and ensuring reliable operation even when driving on rough terrain, making it highly practical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view with the fuel tank and seat cut away to show the oil tank, FIG. 2 is a plan view with only the seat cut away, and FIG. 3 is a plan view with only the seat cut away. 4 is a plan view of the tricycle in which the present invention is implemented, FIG. 5 is a side view thereof, and FIG. 6 is a perspective view showing the frame structure. In the drawings, 2 is a helad tube, 3 is a backbone frame, 17 is a fuel tank, 17c is a recess, 19 is an oil tank, and 22 is a seat.

Claims (1)

[Scope of utility model registration request] An upward recess is formed in the rear bottom of the fuel tank that straddles the backbone frame extending rearward from the head tube, and the recess covers the front upper part and left and right sides of the oil tank fixed to the backbone frame. An oil tank device for a two-wheeled vehicle, characterized in that the rear part of the tank is covered by the front part of the seat.