JP2002192964A - Fuel tank structure - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To supply a large amount of fuel at a time when fuel is supplied from a plastic tank or the like to a fuel tank through a filter in a fuel supply cylinder, and the fuel tank is used by the fuel. If the filter inside the fuel tank is closed, there is no way for the air to escape from the fuel tank, so that the fuel cannot be supplied smoothly, and when the air escapes, the fuel in the refueling cylinder may blow out. Conventionally, in order to solve this problem, there is a separate air vent pipe that connects the vicinity of the filler port of the fuel tank and the fuel tank body, but the cost is high, so that the air from the fuel tank can be smoothly and inexpensively reduced. Provided is a fuel tank that can be removed. An intermediate portion of an inclined oil supply cylinder 6 provided in a fuel tank body 3 is formed to bulge outward, and the upper surface of the inner wall of the oil supply cylinder 6 and the oil supply cylinder 6 are provided. Flange 8a of filter 8 mounted inside
To form a ventilation passage P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fuel tank characterized by the structure of a fuel cylinder.

[0002]

2. Description of the Related Art When a large amount of fuel is supplied at a time when fuel is supplied from a plastic tank or the like to a fuel tank via a filter in a fuel supply cylinder, the fuel in the fuel tank is blocked. In addition, there is no way for the air to escape from the fuel tank, so that the fuel cannot be supplied smoothly, and when the air escapes, the fuel in the refueling cylinder may blow out. Conventionally, in order to solve this problem, an air vent pipe that connects the vicinity of the fuel filler port of the fuel filler cylinder and the fuel tank body has been separately provided.

[0003] However, with the above-mentioned conventional structure, an opening must be formed in the fuel supply cylinder and the fuel tank body, and an air vent pipe must be provided to connect and communicate with the opening. It was a mess.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive fuel tank capable of smoothly removing air from a fuel tank body.

[0005]

According to a first aspect of the present invention, there is provided a receiving member for receiving a flange provided on an upper portion of a filter inside an oiling cylinder provided on an upper portion of a fuel tank body at an angle. In addition to the provision of the seat, the middle portion of the fueling cylinder is formed so as to bulge outward so as to form a ventilation passage between the upper side of the flange and the inner wall of the fueling cylinder when the filter is mounted in the fueling cylinder. .

[Operation] By forming the intermediate portion of the fueling cylinder to bulge outward, a passage can be formed between the filter mounted in the fueling cylinder and the inner wall of the fueling cylinder. By the ventilation passage formed in the upper part in the fueling cylinder, the air in the fueling tank main body can be evacuated without passing through a filter having a high filtration resistance and difficult to pass fuel.

[Effect] The air in the fuel tank main body can be smoothly evacuated simply by forming the middle portion of the fuel supply cylinder outwardly and outwardly, and the air bleeding structure of the fuel tank can be constructed at a low cost. .

[0008]

FIG. 1 shows a combine employing a fuel tank according to the present invention. This combine
The fuel tank 2 is mounted on the rear part of the threshing device 1, and as shown in FIGS. 2 and 3, a refueling cylinder 6 is connected to a connection port 7 formed at a portion where the side plate and the top plate of the fuel tank body 3 are in contact with each other. The fuel tank 2 is configured to be connected continuously in a state of extending obliquely upward toward the outside of the body. And at the upper end of the refueling cylinder 6,
There is provided a screw-in type cap 4 which can open and close a supply port 5 formed at the upper end.

A supply cylinder 6 at a predetermined distance from the oil supply port 5
Inside, a filter 8 for filtering fuel supplied from the filler port 5 is provided. A flange 8a is formed on the upper end of the filter 8, and a receiving seat 6a is formed by partially indenting the circumference of the refueling cylinder 6 to receive the flange 8a of the filter 8 with the receiving seat 6a. The filter 8 is configured to be stopped and supported so that the filter 8 can be mounted in the oil supply cylinder 6.
Then, the inner surface of the refueling cylinder 6 is protruded to form an intermediate portion bulging outward, and the flange 8 a provided on the filter 8 and the refueling cylinder 6 are formed.
The air passage P is formed with a gap provided between the air passage P and the inner peripheral surface.

Therefore, since the ventilation passage P is formed in the upper portion of the fuel supply cylinder 6, the liquid fuel is first supplied to the fuel tank main body 3 through the filter 8 provided in the lower portion.
Even if the filter 8 is closed by the fuel, the air in the fuel tank main body 3 can be discharged to the outside through the ventilation passage P. Further, by setting the inclination angle of the refueling cylinder 6, the arrangement position of the filter 8, and the like, the upper end portion of the flange 8a of the filter 8 is positioned below the lower end position of the refueling port 5, and the fuel that does not fit during the filtering by the filter is ventilated. By escaping into the passage P, it is also possible to suppress fuel overflow from the supply port.

The fuel tank body 3 is divided into two parts, a lower tank part and an upper tank part. The fuel tank body 3 is made of a metal made by joining these parts together with a flange or a synthetic resin material blow-molded together with the refueling cylinder 6. It may be formed. Further, the filter 8 may be formed of metal, for example, a filter 8 in which a metal net is attached to a plastic frame.

The location of the fuel tank 2 is not limited to the one located at the rear of the fuselage, but may be located below the front of the threshing device at the front of the fuselage. May be deployed in a work vehicle.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a partially cutaway rear view of the combine.

FIG. 3 is a perspective view showing a fuel tank of a fuel tank.

FIG. 4 is a longitudinal sectional view of a fueling cylinder.

FIG. 5 is a cross-sectional view of a fueling cylinder.

[Explanation of symbols]

 2 Fuel tank body 6 Refueling cylinder 6a Bracket 8 Filter 8a Flange P Ventilation passage

Claims (1)

[Claims] 1. A receiving seat for receiving a flange provided on an upper part of a filter is provided inside a fuel supply cylinder provided in an inclined shape on an upper part of a fuel tank body, and a receiving seat above the flange when a filter is mounted in the fuel supply cylinder. A fuel tank structure in which an intermediate portion of a fuel tank is formed so as to bulge outward so as to form a ventilation passage between the fuel tank and an inner wall of the fuel tank.