JP2002243522A - Filled-up fuel level visual confirmation device in fuel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filled-up fuel level visual confirmation device capable of providing a comparatively accurate visual confirmation of a filled-up state of fuel irrespective of a horizontal or inclined state of a fuel tank during fueling. SOLUTION: In the fuel tank, a filter tube 5 is attached to a filler opening 2. A float 10 which can be visually confirmed from the filler opening 2 is housed in the filter tube and it is connected to a bottom part 5b of the filter tube 5 via a flexible support member 11 of a predetermined length. The flexible support member 11 allows a horizontal movement of the float 10 while regulating floating of the float 10 to a filled-up fuel level F or higher inside the fuel tank.

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 working machine with an engine, a motorcycle, and the like. The present invention relates to an apparatus for visually confirming a full fuel level in a fuel tank, the state of which can be visually checked.

[0002]

2. Description of the Related Art A fuel tank provided with a filter cylinder for filtering replenishment fuel at a filler port is disclosed in, for example, Utility Model Registration No. 2515.
No. 310.

[0003]

In such a fuel tank, since the inside of the filter cylinder is dark, it is difficult to visually check the full liquid level of the fuel when replenishing the fuel.

Therefore, it is also known to display a fuel full scale on the inner peripheral surface of the filter cylinder. However, it is difficult to see the fuel full scale on the inner peripheral surface of the filter cylinder, and when the fuel tank is inclined. However, even if the liquid level of the replenishment fuel matches the fuel full scale, the liquid level will not be an accurate full liquid level.

[0005] The present invention has been made in view of such circumstances, and at the time of refueling, regardless of the horizontal or inclined state of the fuel tank.
It is an object of the present invention to provide an apparatus for visually confirming a full fuel level in a fuel tank, which can visually confirm the full state of the fuel relatively accurately.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a fuel tank provided with a filter cylinder for filtering a replenishment fuel at a fuel filler port. The filter cylinder is provided with a float floating restricting means for storing the float to be obtained and restricting the float from floating above the full fuel level in the fuel tank and allowing the float to move in the horizontal direction. Is a first feature.

[0007] According to the first feature, the float levitation restricting means is configured to detect that the float submerges in the fuel level when the fuel tank is full of fuel, regardless of whether the fuel tank is horizontal or inclined. It is possible to relatively accurately know that the fuel liquid level has reached the specified fuel full level F by visually observing the fuel level.

Further, in the present invention, in addition to the first feature, a second feature is that the float floating regulating means is constituted by a flexible support member for connecting the bottom of the filter tube and the float.

According to the second feature, with a simple structure, the floating of the float can be restricted while allowing the horizontal movement of the float, and the apparatus for visually confirming the liquid level of the fuel supply can be provided at low cost. be able to.

Further, in addition to the first feature, the present invention is characterized in that the float floating regulating means is constituted by a rod-shaped support member which penetrates through the float and is swingably connected to the bottom of the filter tube. At the upper end of the support member, a level indicator that bends into a hook shape on the upper surface of the float is formed.
The feature of.

According to the third feature, when the float is immersed in the fuel level, the level indicator can be easily visually checked, and it is possible to accurately know that the fuel level has reached the full level. Moreover, since the level indicator is formed by bending the upper end of the rod-shaped support member, the structure is extremely simple.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a device for visually confirming a fuel full level in a fuel tank according to a first embodiment of the present invention, FIG. 2 is an explanatory view of the operation of the device when the fuel is full, and FIG. Explanatory diagram of operation of the same device when fuel is full when the tank is tilted,
FIG. 4 is a longitudinal sectional view of a device for visually confirming a fuel level in a fuel tank according to a second embodiment of the present invention, FIG. 5 is an explanatory diagram of the operation of the device when the fuel is full, and FIG. FIG. 7 is an explanatory diagram of the operation of the device when the fuel is full in the state.

First, a description will be given of the first embodiment of the present invention shown in FIGS.

In FIG. 1, a fuel tank 1 is made of a synthetic resin.
Is screwed. A holding ring 4 is molded and joined to the inner peripheral surface of the fuel filler port 2, and a filter cylinder 5 made of synthetic resin is mounted on the holding ring 4.

The holding ring 4 has an inward flange 4a at the lower part,
The flange 4a has a cylindrical portion 4b projecting downward from the inner peripheral end. The upper surface of the flange 4a receives the enlarged diameter portion 5a at the upper end of the filter cylinder 5, and the cylindrical portion 4b controls the filter cylinder 5b. Is guided.

The filter tube 5 has a large number of windows 6 formed on the peripheral wall.
In addition, a filter net 7 for filtering the replenishment fuel is stretched.
When the filter cylinder 5 is attached to the holding cylinder, the bottom 5
b has a length such that it falls below a specified fuel filling level F in the fuel tank 1.

A spherical float 10 is accommodated in the filter tube 5, and the float 10 is connected to the other end of a flexible support member 11 such as a string having one end fixed to the center of the bottom 5b of the filter tube 5. The flexible support member 11 is provided at the bottom 5b of the filter tube 5.
, The float 10 has a length that restricts the float 10 from floating above the full fuel level F, and allows the float 10 to move in the horizontal direction about the joint with the bottom 5b. The float 10 is visually recognized by the refueling worker from the refueling port 2, and is desirably colored white, for example, to facilitate the visualization.

The operation of the first embodiment will be described.

As shown in FIG. 1, when the fuel level 8 in the fuel tank 1 is lower than the bottom 5b of the filter tube 5, the float 10 is received by the upper surface of the bottom 5b of the filter tube 5, The flexible support member 11 is largely bent.

To refuel the fuel tank 1,
The cap 3 is removed, and fuel is injected into the filter cylinder 5 from the opened fuel supply port 2. The fuel injected into the filter tube 5 is filtered by the filter net 7 when passing through the many windows 6 of the filter tube 5 and fills the fuel tank 1.
When the fuel level 8 in the inside rises and exceeds the bottom 5b of the filter cylinder 5, the float 10 comes to float on the fuel level 8, but the fuel level 8 becomes the specified fuel level. When the amount level F is reached, as shown in FIG.
According to a further rise of the fuel level 8, the float 1 is tensioned and restricts further floatation of the float 10.
Is immersed below the fuel level 8. The manner in which the float 10 changes from a state in which it floats above the fuel level 8 to a state in which it floats below the level 8 can be easily visually confirmed by the refueling worker from the refueling port 2. . That is, the refueling worker knows from this that the fuel in the fuel tank 1 has reached the specified full level F, and finishes refueling. As a result, excessive replenishment of the fuel can be prevented.

In this case, in particular, even if the fuel tank 1 is slightly inclined as shown in FIG. 3, the buoyancy of the float 10 causes the flexible support member 11 to always move with respect to the fuel level 8. Because of the vertical attitude, the floating height of the float 10 above the fuel level 8 does not vary significantly, so the float 10 indicates the fuel full level F relatively accurately.

The float 1 from the bottom 5b is
As a float floating regulation means that regulates the floating height of 0,
The use of the flexible support member 11 as described above is effective in simplifying the structure and reducing the cost.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 to 6 respectively correspond to FIGS. 1 to 3 of the previous embodiment.

The second embodiment differs from the previous embodiment in that a rod-shaped support member 21 is used as a float floating regulating means for regulating the floating height of the float 10 from the bottom 5b of the filter tube 5. The rod-shaped support member 21 is provided for the float 10.
Of the filter cylinder 5, and is inserted into the support hole 23 of the bottom 5b of the filter tube 5 so as to be able to move up and down and swing.
At the lower end of the rod-shaped support member 21, a retaining piece 21a bent in a hook shape and engaged with the lower surface of the bottom portion 5b is provided.
At the upper end thereof, a stopper / level indicator 21b which is bent in a hook shape and engages with the upper surface of the float 10 is formed.

Since other structures are the same as those of the previous embodiment, the same reference numerals are given to the corresponding parts in FIGS. 4 to 6 and the description thereof will be omitted.

Thus, when the fuel tank 1 is full of fuel, the rod-like support member 21 irrespective of the horizontal state and the inclined state of the fuel tank 1 as in the case of the flexible support member 11 of the previous embodiment. By the action of the buoyancy of the float, it is possible to maintain a posture perpendicular to the fuel level 8, and therefore, the float 10
Can always indicate the full fuel level F relatively accurately.

Moreover, at the upper end of the rod-shaped support member 21, a level indicator 21b located on the upper surface of the float 10 is formed, so that when the float 10 sinks below the fuel level 8,
The refueling worker can easily visually observe the level indicator 21b exposed on the fuel liquid level 8 and can accurately know that the fuel liquid level 8 has reached the full level F. Moreover, since the level indicator 21b is formed by bending the upper end of the rod-shaped support member 21, its structure is extremely simple.

Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof.

[0030]

As described above, according to the first aspect of the present invention, in a fuel tank in which a filter cylinder for filtering replenishment fuel is mounted at a filler port, the filter cylinder can be visually recognized from the filler port. While containing the float and regulating the float from rising above the full fuel level in the fuel tank,
A first feature is that a float floating regulating means for allowing the float to move in the horizontal direction is provided in the filter cylinder.

[0031] According to the first feature, the float floating restriction means is configured to detect that the float submerges in the fuel level when the fuel tank is full of fuel, regardless of whether the fuel tank is horizontal or inclined. It is possible to relatively accurately know that the fuel liquid level has reached the specified fuel full level F by visually observing the fuel level.

According to the second feature of the present invention, in addition to the first feature, the float floating restriction means is constituted by a flexible support member connecting the bottom of the filter tube and the float. With a simple structure, it is possible to restrict the floating of the float while allowing the float to move in the horizontal direction, and it is possible to provide an apparatus for visually recognizing a full fuel level at low cost.

According to a third feature of the present invention, the first
In addition to the above features, the float floating regulating means is constituted by a rod-shaped support member which penetrates through the float and is connected to the bottom of the filter tube so as to swing freely. Since the level indicator is bent in a hook shape on the upper surface, when the float is immersed in the fuel liquid level, the level indicator can be easily visually checked to accurately know that the fuel liquid level has reached the full level. it can. Moreover, since the level indicator is formed by bending the upper end of the rod-shaped support member,
The structure is extremely simple.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an apparatus for visually recognizing a fuel full level in a fuel tank according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of the operation of the device when the fuel is full.

FIG. 3 is an explanatory diagram of the operation of the device when the fuel tank is full when the fuel tank is inclined.

FIG. 4 is a longitudinal sectional view of an apparatus for visually recognizing a full fuel level in a fuel tank according to a second embodiment of the present invention.

FIG. 5 is an explanatory diagram of the operation of the device when the fuel is full.

FIG. 6 is a diagram illustrating the operation of the device when the fuel tank is full when the fuel tank is inclined.

[Explanation of symbols]

 1 fuel tank 2 filler port 5 filter cylinder 5b bottom of filter cylinder 10 float 11 float control means (float Flexible support member) 21 Float floating regulation means (bar-shaped support member)

Claims (3)

[Claims] 1. A fuel tank (1) in which a filter tube (5) for filtering replenishment fuel is mounted on a fuel filler port (2). The filter cylinder (5) can be visually recognized from the fuel filler port (2). The float (10) is accommodated, and while the float (10) is prevented from rising above the fuel full level (F) in the fuel tank (1), the float (10) moves in the horizontal direction. A device for visually recognizing a full fuel level in a fuel tank, wherein an allowable float floating regulation means (11, 21) is provided in the filter cylinder (5). 2. The apparatus for visually recognizing a fuel-filled liquid level in a fuel tank according to claim 1, wherein the float floating restricting means includes a bottom portion (5b) of the filter tube (5) and a float (1).
0) A device for visually recognizing a full fuel level in a fuel tank, comprising a flexible support member (11) connecting between the two. 3. The apparatus for visually recognizing a fuel level in a fuel tank according to claim 1, wherein the float floating restricting means penetrates the float (10), and the filter cylinder (5).
And a bar-shaped support member (21) that is swingably connected to the bottom (5b) of the float. 21b) A device for visually confirming a full fuel level in a fuel tank, wherein the device is formed with 21b).