JPS6238910Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a breather device for a fuel tank in a general-purpose engine for driving a power generation unit or other general-purpose engines.

Conventionally, this type of device includes a breather passage such as a tube, which is connected to the inside of the main body a at the left and right ends c, c, which bend downward and extend into the handle b at the upper part of the tank body a, as shown in the first diagram, for example. A type in which the passage d is installed horizontally is known, but in this case, the passage d
generally has an opening e in the middle of its length and communicates with the atmosphere at the opening e,
In such a case, when the tank body a is tilted to the right or left from a state where the liquid level inside is relatively high, the liquid level is at the height of the opening e as shown by line f in the figure, This can lead to inadvertent leakage of fuel through this, with the disadvantage that it is likely to occur.

The object of the present invention is to obtain a device free of such inconveniences, and the main body 1 is placed in the handle 2 at the upper part of the tank body 1 at both left and right ends 3, 3 which extend downwardly and bent. In a type in which a breather passage 4 that communicates with the inside is installed horizontally, the passage 4
is constructed in such a manner that it is provided with a branch passage 5 extending from one end 3 to the upper side of the other end 3, and the branch passage 5 is communicated with the atmosphere.

FIGS. 2 to 5 show one example of this. The handle 2 has a hollow frame-like shape, and a cover 2a is removably provided on the top surface of the handle 2, and the passage 4 is made of gasoline-resistant material. A tube made of a material is formed integrally with the branch passageway 5 in advance, and is accommodated in the hollow interior of the handle 2 and detachably fixed by fixing members 6 at both ends.
Note that the passages 4 and 5 are connected to the handle 2 as shown in FIG.
It may be perforated in one piece. In the drawing, 7 is the tank cap on its side, 8 is the filter below it, and 2b
shows a small hole formed in the lower part of the handle 2, through which gas, water, etc. are vented.

To explain its operation, consider a case where the tank body 1 is filled with fuel at a relatively high liquid level 9 and then tilts to the right or left. As shown in FIG. 8, the liquid level 9 does not reach the open end of the branch passage 5, and the fuel does not inadvertently flow out through the branch passage 5.

In this way, according to the present invention, the tank body 1
It is possible to eliminate accidental leakage of fuel by tilting the breather passage 4 from side to side.
It is sufficient to provide a branch passage 5 extending from one end 3 to the upper side of the other end 3, and it can be obtained easily and inexpensively, and it is not necessary to dispose it inside the handle 3 and spoil the appearance. It has the effect that there is no

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the conventional example, Fig. 2 is a cutaway side view of the main part of an example of the proposed device, Fig. 3 is an exploded perspective view of the main part, and Figs. 4 and 5 are its operation. FIG. 6 is a cross-sectional side view of the main part of another embodiment. 1... Tank body, 2... Handle, 3, 3...
...end, 4...breather tube, 5...branch tube.

Claims (1)

[Scope of utility model registration request] In a type in which a breather passage 4 is installed horizontally in the handle 2 at the top of the tank body 1 and communicates with the inside of the body 1 at both left and right ends 3, 3 bent downward and extending, the passage 4 is A fuel tank breather device comprising a branch passage 5 extending from one end 3 to the upper side of the other end 3 and communicating with the atmosphere via the branch passage 5.