JPH06156350A - Fuel tank of scooter type vehicle - Google Patents

Abstract

PURPOSE:To provide a fuel tank of a scooter type vehicle which can install a fuel tank of a simple structure and a light weight, simply and solidly with small number of parts. CONSTITUTION:In this fuel tank of a scooter type vehicle, a fuel tank main body 37 is formed of a resin material, while a fuel filler hole 40 is provided at the outer side of a car body, and a cap 42 with key is installed to the fuel filler hole 40 directly. Furthermore, in this fuel tank of the scooter type vehicle, the fuel tank main body 37 is fixed by using body covers 52a and 52b, a rear frame 23, and a rear fender 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank for a scooter type vehicle, and more particularly to a fuel tank for a scooter type vehicle which has a reduced number of parts and a simplified mounting structure.

[0002]

2. Description of the Related Art Most scooter type vehicles are equipped with fuel tanks 2 and 12 behind seats 1 and 11 as shown in FIGS.

Fuel inlets 3, 13 of the fuel tanks 2, 12
For the safety of handling and crime prevention, as shown in FIG. 9B, the lid is closed by an openable lid 4, and FIG.
In many cases, the fuel injection port 13 is arranged behind the luggage storage portion 15 under the seat 11 as shown in b, and the openable seat 11 serves as a lid.

Further, in many conventional fuel tanks, a half body made of a sheet metal press having an anticorrosion treatment inside is joined.

Further, in FIG. 11, the conventional fuel tank 6 is often attached to the rear fender 7 of a scooter type vehicle by a rubber band 8 or the like.

[0006]

However, the opening / closing lid 4 has a complicated mounting structure as shown in FIG. 9B and the number of parts is increased, so that the number of assembling steps is increased and the manufacturing cost is also increased.

Then, as shown in FIGS. 10a and 10b, the sheet 11
If the fuel injection port 13 is provided in the lower portion, the fuel spilled during the fuel injection may pollute the luggage in the luggage storage portion 15.

Further, in both cases, since the fuel inlet is inside the body of the vehicle body, the upper covers 9 and 19 as a tray and the spilled fuel are placed outside the vehicle body so that the spilled fuel does not enter the inside of the vehicle body at the time of fuel injection. A hose (not shown) for guiding is required.

Further, the iron fuel tank is expensive to manufacture, has a complicated mounting structure, is heavy when fuel enters, and is unstable to be mounted by the rubber band.

The present invention has been made in view of the above-mentioned circumstances, and provides a fuel tank for a scooter type vehicle which does not have a complicated member such as an openable lid and which does not enter the inside of the vehicle body even if fuel spills. With the goal.

Another object of the present invention is to provide a fuel tank for a scooter type vehicle in which a lightweight fuel tank can be easily mounted with a small number of parts.

[0012]

In order to solve the above-mentioned problems, a fuel tank for a scooter type vehicle according to the present invention,
According to the first aspect of the present invention, the fuel tank is formed of a resin material, the fuel inlet is arranged outside the vehicle body, and the cap with the key is directly attached to the fuel inlet.

Further, in order to solve the above-mentioned problems, as described in claim 2, the fuel tank can be fixed using a vehicle body cover, a rear frame and a rear fender. .

[0014]

In the present invention having the above structure, since the fuel tank is formed of the resin material, a simple, inexpensive and lightweight fuel tank can be provided.

Further, since the cap with the key is directly attached to the fuel tank, it is not necessary to store the fuel inlet inside the body of the vehicle body for the sake of safety in handling and crime prevention, and the opening / closing lid is not necessary. Since there is no risk of fuel leaking into the vehicle body, the structure around the fuel tank can be simplified.

Further, since the fuel tank can be fixed by using the vehicle body cover, the rear frame and the rear fender, the fuel tank mounting structure can be simplified and firmly fixed.

[0017]

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

FIG. 1 is a side view of a scooter type vehicle to which the present invention is applied.

FIG. 2 is a plan view of a scooter type vehicle to which the present invention is applied.

3 and 4 are views showing the mounting structure of the fuel tank, and FIG. 5 is a sectional view taken along the line XX in the vicinity of the fuel inlet of the fuel tank.

FIG. 6 is a sectional view of the keyed cap, and FIG. 7 is a plan view and a sectional view of the fuel inlet of the fuel tank.

FIG. 8 is a fitting diagram of the fuel inlet of the fuel tank and the keyed cap.

In FIG. 1, reference numeral 20 denotes a vehicle body frame, which is a main tube 22 as a down tube extending obliquely downward and rearward from a head pipe 21 and a pair of left and right sides having front ends fixed to the main tube 22 and extending rearward and upward. It has a rear tube 23 as a rear frame. The rear tube 23 is bent in the vicinity of the middle thereof, stands up at one end, and then curves backward and extends.

Lower part of main tube 22 and rear tube 2
3 Horizontal step floor 24 near the connection with the front
Is provided, and a leg shield 25 standing upward from the front end of the step floor 24 is formed.

A head pipe 21 is located inside the leg shield 25, a front fork 26 is held by the head pipe 21, and steering front wheels 27 are held at the lower ends thereof. Reference numeral 28 is a steering handle.

Reference numeral 29 denotes an engine unit as a power unit, which includes an engine (not shown) and a transmission case 30 extending from one side of the engine to the rear, and a drive rear wheel 31 is held at a rear end of the transmission case 30. It is a thing. The transmission case 30 also serves as a swing arm, and is elastically supported by the rear tube 23 by a cushion unit 32.

Reference numeral 33 is an operation seat, and a luggage storage portion 34 is provided at the lower portion thereof.

Reference numeral 35 is a rear fender, and the rear fender 35 is provided with a fuel tank attachment 36 as shown in FIGS.

As shown in FIG. 4, the fuel tank main body 37 comprises a tank 38, a mounting claw 39, a fuel inlet 40, a cushion 41, and a keyed cap 42.

As shown in FIG. 5, the cushion 41 is provided between the rear tube 23 as a rear frame and the tank 38.

As shown in FIG. 7, an inlet plate 43 is welded to the inside of the fuel inlet 40, and a male screw is formed on the outside of the fuel inlet 40.

As shown in FIG. 6, the keyed cap 42 is composed of a cap 44, a lock portion 45, and a packing 46. Inside the cap 44, there is a female screw threaded to the male thread of the fuel injection port 40. Has been formed.

Further, the lock portion 45 is provided with a lock pin 47 which interlocks with the rotation of a key (not shown) and which extends and retracts in a direction orthogonal to the axial direction of the key.

Next, the operation of this embodiment will be described.

The tank 38, the mounting claw 39, and the fuel inlet 40 are integrally formed by injection molding with a resin material such as polyethylene resin.

By integrally molding the fuel tank by injection molding with a polyethylene resin material, the fuel tank can be lighter, cheaper, and easier than the fuel tank made of sheet metal press,
There is no need to rust prevent the inside of the fuel tank.

In FIG. 8, the opening of the fuel inlet 40 can be closed by screwing the cap 44 into the fuel inlet 40 of the fuel tank main body 37.

Then, by rotating the key 48 in one direction, the lock pin 47 of the lock portion 45 slides outward and is locked to the lower portion of the inlet plate 43 welded inside the fuel inlet 40 in advance. , Cap 44
Can be locked. Also, by rotating the key 48 in the opposite direction, the lock pin 4 of the lock portion 45 is
7 is housed inside the lock portion 45 and unlocks the cap 44, so that the cap 44 can be easily removed from the fuel tank main body 37.

Note that FIG. 8a shows the keyed cap 42 in the locked state, and FIG. 8b shows the unlocked state.

Since the fuel inlet 40 has the above structure, it is not necessary to close the fuel inlet 40 with the lid or the seat 33, and the fuel inlet can be arranged outside the vehicle body.

The rear fender 35, as shown in FIG.
Screw 4 on the rear of the rear tube 23 and luggage compartment 34
It is fixed by 9 and the nut 50.

As shown in FIG. 4, the fuel tank main body 37 has a mounting claw 39 fitted and fixed to a fuel tank mounting member 36 provided on the rear fender 35.

Further, as shown in FIG. 5, the fuel tank main body 37 is held more firmly by being sandwiched by the rear tube 23 with a cushion 41 interposed.

Further, as shown in FIGS. 3 and 5, the fuel inlet 40 is provided with a weather-resistant and oil-resistant rubber inlet 51.
The left and right vehicle body covers 52a and 52b are held between them to hold the sheet more strongly and prevent the spilled fuel from leaking into the vehicle body.

[0045]

As described above, according to the fuel tank of the scooter type vehicle according to the present invention, since the fuel tank is made of the resin material, it is possible to provide a simple, inexpensive and lightweight fuel tank.

Since the cap with the key is directly attached to the fuel tank, the fuel inlet can be arranged outside the vehicle body, and the cap can be attached in the locked state even if the fuel inlet is exposed to the outside. Since the opening / closing lid and the like are not necessary and there is no fear of fuel leaking into the vehicle body during fuel injection, the structure around the fuel tank can be simplified.

Further, since the fuel tank can be fixed by using the vehicle body cover, the rear frame and the rear fender, the fuel tank mounting structure can be simplified and firmly fixed.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a scooter type vehicle according to the present invention.

FIG. 2 is a plan view showing an embodiment of a scooter type vehicle according to the present invention.

FIG. 3 is a mounting structure diagram of a fuel tank.

FIG. 4 is a detailed structural diagram of attachment of a fuel tank.

FIG. 5 is a sectional view taken along the line XX in the vicinity of the fuel inlet of the fuel tank.

FIG. 6 is a sectional view of a cap with a key.

7A and 7B are a plan view and a cross-sectional view of a fuel injection port of a fuel tank.

8 (a) and 8 (b) are fitting diagrams of a fuel injection port of a fuel tank and a cap with a key.

9A and 9B are reference views showing a conventional technique in which a fuel injection port is closed using an openable lid.

10 (a) and 10 (b) are reference views showing a conventional technique in which a fuel injection port is arranged in the lower part of the seat behind the luggage storage part, and the openable seat serves as a lid.

FIG. 11 is a reference diagram showing a conventional technique of mounting a fuel tank.

[Explanation of symbols]

 23 Rear Tube (Rear Frame) 33 Driving Seat 34 Luggage Storage Section 35 Rear Fender 36 Fuel Tank Mounting Tool 37 Fuel Tank Main Body 38 Tank 39 Mounting Claw 40 Fuel Inlet 41 Cushion 42 Key Cap 43 Inlet Plate 44 Cap 45 Lock Part 46 Packing 47 Lock Pin 51 Rubber Inlet 52a, 52b Body Body Cover

Claims (2)

[Claims] 1. A fuel tank attached to a rear portion of a seat of a scooter type vehicle, wherein the fuel tank is formed of a resin material and a fuel inlet is arranged outside the vehicle body, and a cap with a key is directly attached to the fuel inlet A fuel tank for a scooter-type vehicle. 2. The fuel tank for a scooter type vehicle according to claim 1, wherein the fuel tank is fixed using a vehicle body cover, a rear frame and a rear fender.