JP2887824B2 - Fuel tank device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank device, and more particularly to a detachable fuel tank device.

[0002]

2. Description of the Related Art In general, for small ships or other engines equipped with a gasoline engine, which cannot be refueled by being laid directly beside a gas station at the time of refueling, the fuel tank device is detachable from the engine body. Then, the fuel tank device is removed, the tank is directly refueled, and the tank is again mounted on the engine body for use.

FIG. 3 shows a conventional fuel tank device. This fuel tank device is roughly composed of a tank 20 as a fuel container, a fuel hose (not shown), and a gauge 21 having a detachable engaging portion. The gauge section 21 is usually connected to a fuel hose (not shown) of the engine body. When fuel is supplied, the fuel hose is removed from the gauge section 21 and the fuel tank device is directly taken out to directly refuel the engine. It is used by attaching to the main body.

A gauge section in a conventional fuel tank device will be described with reference to FIGS. In FIG. 4, reference numeral 21 denotes a gauge body, and reference numeral 22 denotes a fuel passage. The fuel passage 22 of the gauge body 21 is provided with a protrusion 21a which is detachably engaged with a connector (not shown) of a fuel hose. Further, a D-ring 28 inserted and locked in a groove provided along the outer periphery of the inner wall surface is provided on the inner wall inside the opening 21b. A bearing-shaped fuel opening / closing ball valve 27 having a spring 29 mounted on one end thereof so as to close the portion 21b is provided.

When the connector (not shown) of the fuel hose is fitted into the projection 21a of the gauge body 21 constructed as described above, the push rod (not shown) on the connector side opens the fuel port opening / closing ball valve. 27, the fuel passage 22 is opened and the fuel is sucked in the H direction. At this time, a negative pressure is created in the tank due to the suction of the fuel, but outside air enters from an air passage (not shown) provided separately in a tank cap (not shown), and the negative pressure is canceled.

Referring to FIG. 5, this conventional example is configured by incorporating the above-described conventional air passage 23 into a cage body 40 together with a fuel passage 41. The air passage 23 and the fuel passage 41 are provided with inner cavities 35 and 36 having inner diameters slightly larger than the inner diameters of the openings 38 and 39, respectively. An O-ring 3 is provided on the inner side surface of the inner space 35.
0, 31 are mounted. The O-rings 30 and 31 are pressed outward in the openings 38 and 39, and
8. Close spring 3 on one side of flange so as to close
An engine valve-like fuel port opening / closing valve 25 with the shaft parts freely inserted into the openings 38 and 39, and an air port opening / closing valve 26 similar to this are provided respectively. .

[0007] On the other hand, one end of the tank 2 is connected to a lower portion of an inner space 36 provided inside the opening 39 of the air passage 23.
An inner space portion 37 that opens into the inner space 0 is provided. And
A dish-shaped valve 24 for opening and closing a passage with the inner space 36 is disposed above the inner space 37. A spring 34 is mounted on a lower portion of the valve 24, and the valve 24 constantly closes the inner space 36 and the inner space 37 by the pressing force of the spring.

When the connector (not shown) of the fuel hose is fitted into the fitting portion 40a of the gauge body 40 constructed as described above, a push rod (not shown) on the connector side becomes
The fuel port opening / closing valve 25 and the air port opening / closing valve 26 are pushed, so that the fuel passage opening 38 and the air passage opening are opened, and the fuel is sucked in the I direction. At this time, a negative pressure is generated in the tank, but the valve 24 is pushed down by the atmospheric pressure through the opened passage, and outside air enters through the air passage to cancel the negative pressure.

[0009]

However, in the fuel tank device of the above-mentioned conventional example, in a fuel tank device of a type having no air inlet in the gauge portion, the operability at the time of attaching / detaching the fuel hose connector, the number of components, etc. Although good from the perspective of fuel, there is the disadvantage that when the tank is tilted or turned over during transportation when the tank is filled with fuel, fuel may leak from the air passage provided separately in the tank cap. Was. Further, in the fuel tank device of the type in which the air passage is provided in the gauge portion, the fuel passage and the air passage are provided adjacent to each other, and the opening / closing valve is provided at the opening of each passage. On the other hand, there is no fear of leakage, but the structure becomes complicated and the number of constituent parts increases, leading to an increase in cost.
Further, since the fuel passage and the air passage are arranged on the same surface of the cage portion, there is an inconvenience that the operability at the time of attachment / detachment is impaired due to the occurrence of directionality when attaching / detaching the fuel hose connector.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to remedy the disadvantages of the prior art, and in particular to provide a fuel tank which has good operability for attaching and detaching a fuel hose connector and can prevent fuel leakage from an air passage or the like. Its purpose is to provide a device.

[0011]

According to the present invention, there is provided a fuel tank body provided with a fuel passage and an air passage, a gauge body provided with a hose engaging portion for the fuel passage and an outside air inlet for the air passage. In the fuel tank device having, the gauge body is provided with an opening / closing rod hole that is open at one end, which is commonly conducted to each opening of the fuel passage and the air passage. An opening / closing rod whose side surface is simultaneously opposed to each opening of the air passage is equipped in a loosely inserted state, and a pressing means for constantly pressing the opening / closing rod toward the opening is provided in the opening / closing rod hole. The outside air introduction port is arranged on the air passage side of the opening / closing rod hole, and is normally set in a sealed state. When the opening / closing rod is pressed against the pressing means, the fuel passage is provided. And equipped with air passage outside air introducing means for external air conducting to each other, before the gas closing rod bore,
And so on. These are intended to achieve the above-mentioned object.

[0012]

An opening / closing rod hole which is commonly conducted to each opening of the fuel passage and the air passage is opened, an outside air introduction port is provided in a predetermined portion of the opening / closing rod hole, and the opening / closing rod is inserted into the opening. Usually, these openings are set in a sealed state, and the opening / closing rod is moved to separately communicate the fuel passage and the air passage with the outside air.

[0013]

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 21 denotes a gauge unit main body of the fuel tank device. The gauge portion is provided with a fuel passage 22 communicating from a lower portion of the tank, and an air passage 23 adjacent to the fuel passage 22 for taking in outside air into the tank. Opening / closing rod holes 1 are formed in the gauge side openings 22a and 23a of the passages 22 and 23 so as to connect these openings in common. The opening / closing rod hole 1 is a passage having one end on the air passage 23 side closed and the other end opened, and an outside air inlet 4 is provided between the fuel passage 22 and the air passage 23. It has a configuration. The D-ring 7 is inserted and locked in a groove provided along the outer periphery of the inner wall near the opening 10 of the opening / closing rod hole 1.

An opening / closing rod 2 in which a first O-ring 5 and a second O-ring 6 are attached and locked at a predetermined interval at the center thereof is loosely inserted into an inner path of the opening / closing rod hole 1. . Also, one end 2a of the opening and closing rod 2 is formed in a spherical shape,
A spring 3 for urging the opening / closing rod 2 to apply a pressing force is provided at the other end. On the other hand, the air passage 23 located below the opening / closing rod hole 1 is provided with an inner space 9 slightly larger than the inner diameter of the air passage 23. The inner space 9 is provided with a dish-shaped valve valve 24 on which a spring 8 for urging a pressing force to a lower portion to seal the opening 23a of the air passage from the inner airway side is mounted.

Next, the operation of the above embodiment will be described. In FIG. 1, when the connector of the fuel hose and the fuel tank device are disconnected, the opening 10 of the fuel passage 22 is shut off by the opening / closing rod tip 2 a and the D-ring, and the outside air is opened by the second O-ring 6. The inlet 4 is also shut off. The air passage 23 is isolated from the outside air inlet 4 by the halves 24 and the first O-ring 5.

In FIG. 2, when the connector of the fuel hose is connected to the fuel tank device, the opening / closing rod tip 2a pushed by the push rod on the connector side pushes the spring 3 attached to the other end of the opening / closing rod. Retreat while resisting. At the same time, the O
The rings 5 and 6 also move, and the first O-ring 5 is located above the opening 23a of the air passage.

In this state, the fuel passage 22 opens to the opening 10 and the fuel is sucked in the K direction. At this time, the inside of the tank has a negative pressure, but the air passage 23 and the outside air inlet 4 have been opened by the movement of the first O-ring 5 , so that the valve 24 has the atmospheric pressure while resisting the pressing force of the spring 8. As a result, the outside air enters the tank via the air passage 23, and the negative pressure is canceled, so that the fuel is smoothly carried out.

[0018]

As described above, according to the present invention, an opening / closing rod hole commonly connected to each opening of the fuel passage and the air passage is opened, and an outside air inlet is provided at a predetermined portion of the opening / closing rod hole. In addition, the opening and closing rods are loosely inserted into the corresponding holes, and these openings are usually set in a sealed state, and the rods are moved so that the fuel passages and the air passages are individually connected to the outside air. Since the opening and closing of the fuel passage and the opening and closing of the air passage can be performed simultaneously by moving the opening and closing rod, there is no need to provide an air passage in the gauge part, and the connector engagement of only the fuel passage As a part, the directionality at the time of mounting the connector is lost, so that the operability of attaching and detaching the fuel hose connector is improved. Furthermore, since the opening and closing of the air passage can be performed in conjunction with the opening and closing of the fuel passage by moving the opening / closing rod, an excellent fuel tank device that can prevent fuel leakage from the air passage and the like is an unprecedented superior fuel tank device. Can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing the operation of FIG. 1;

FIG. 3 is an explanatory view showing a conventional device.

FIG. 4 is a sectional view showing a conventional example.

FIG. 5 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening / closing rod hole 2 Opening / closing rod 3 Spring as a pressing means 4 Outside air introduction port 5 O-ring as outside air introducing means 6 O-ring as outside air introducing means 7 D-ring as outside air introducing means 21 Gauge main body 22 Fuel passage 23 Air passage

Claims (4)

(57) [Claims] 1. A fuel tank device comprising: a fuel tank main body having a fuel passage and an air passage; and a gauge main body having a hose engaging portion for the fuel passage and an outside air inlet for the air passage. The gauge body is provided with an opening / closing rod hole that is open at one end, which is in common with each opening of the fuel passage and the air passage. In the opening / closing rod hole, the opening is provided at each opening of the fuel passage and the air passage. An open / close rod whose side faces are simultaneously opposed to each other is equipped in a loosely inserted state, and a pressing means for constantly pressing the open / close rod toward the opening is provided in the open / close rod hole, and the air in the open / close rod hole is provided. Disposing the outside air inlet on the passage side,
Normally, an outside air introducing means which is set to a sealed state and which allows the fuel passage and the air passage to communicate with the outside air when the opening / closing rod is pressed against the pressing means is provided in the front air opening / closing rod hole. A fuel tank device, characterized in that: 2. The fuel tank device according to claim 1, wherein the other end of the opening / closing rod hole is sealed, and the pressing means is disposed at the other end in the opening / closing rod hole. 3. The outside air introduction port is provided between each opening of the fuel passage and the air passage in the opening / closing rod hole, and the outside air introduction means includes an opening of the fuel passage, the outside air introduction port, An intermediate sealing partition member that is provided between the opening of the fuel passage and the outside air introduction port in a constantly sealed state, and the opening / closing rod that is provided between the opening of the air passage and the outside air introduction port. An external air introduction port sealing member for conducting the air passage and the external air introduction port when pressed against the pressing means, and the opening / closing rod provided on the opening side in the opening / closing rod hole, wherein the opening / closing rod is attached to the pressing means. 3. The fuel tank device according to claim 1, further comprising a fuel passage sealing member that connects the opening of the fuel passage and the opening of the opening / closing rod hole when pressed against the fuel passage. 4. The fuel tank device according to claim 3, wherein the intermediate sealing partition member, the outside air inlet sealing member, and the fuel passage sealing member are each constituted by an O-ring.