JPS6115036Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a container for filling liquid fuel, and more specifically, the invention is a container for filling liquid fuel, and more specifically, it has a simple mechanism and is equipped with an injection valve that enables quick injection of fuel and complete sealing when injection is stopped. The present invention relates to a liquid fuel injection container.

It is well known that containers containing liquid are equipped with automatic on-off valves that open when pressed and return to the closed state when the pressure is released, and various types are actually used. The stem moves in a generally vertical direction, opening an opening previously sealed with a gasket into a content-receiving space, or creating a seal between a truncated cone on the stem and a tapered surface within the container body. Most of them are released and the contents are taken out.

However, such on-off valves have a large number of parts due to the structure in which the stem must be pressed in a strictly vertical direction, require high dimensional and shape accuracy, have a complex structure, and increase the cost of the entire container. The problem is that it is expensive. Another problem is that the opening cross-sectional area of the valve is small, and therefore the amount of liquid that can be injected per unit time is generally low.

In recent years, with the trend toward depletion of petroleum resources, much research has been conducted on using alcohols such as methanol and ethanol as fuel. It is necessary to fill the fuel tank of a stove, etc. without touching the fuel tank, and it is also necessary to fill the tank quickly, and when injection is stopped, it is quickly resealed to prevent leakage. It is hoped that In this case, unlike liquefied gases such as butane, methanol has a significantly low autogenous pressure, so injection from the container must rely only on gravity. Therefore, increasing the opening cross-sectional area of the injection valve is recommended for rapid injection. It is necessary in this respect.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid fuel injection container that has a simple mechanism and is equipped with an injection valve that enables quick injection of fuel and quick complete sealing when injection is stopped.

Another purpose of the present invention is to enable a reliable opening operation and a reliable and quick closure recovery operation even when the movable part of the valve is not pressed in a completely vertical direction. The object of the present invention is to provide a liquid fuel container with an injection valve that can have a larger value than that of the liquid fuel container.

Still another object of the present invention is that the injection valve is composed of three members: the wall of the injection valve accommodating part, the vertically movable body, and the return mechanism. To provide a liquid fuel container with a simple injection valve.

According to the present invention, the injection valve is composed of a liquid fuel storage section, an injection opening, and an injection valve storage section provided between the liquid fuel storage section and the injection opening, and the injection valve is opened by pressure and released by pressure. In a liquid fuel injection container having a structure that returns to a closed state by The injection valve accommodating portion includes a horizontal annular movable seal portion that can engage with the fixed seal surface over the entire circumference; a non-hollow solid part connected to the inner peripheral edge over the entire circumference; and a movable guide extending from the solid part toward the injection opening side and located inside the fixed guide surface with a small gap. and a restoring mechanism that presses and biases the up-and-down movable body toward the injection opening side, and the center of the area of action of the restoring mechanism on the up-and-down movable body is located inward from the movable seal part. The movable guide portion and the fixed guide surface are arranged such that when the movable seal portion and the fixed seal surface touch at one point, the movable guide portion and the fixed guide surface can make a circular motion toward the injection opening at the tip of the movable guide portion that is farthest from this contact point. A liquid fuel injection container is provided, which is characterized in that the liquid fuel injection container is provided with a sufficient clearance such that:

The present invention will be described in detail below based on specific examples shown in the accompanying drawings.

In FIG. 1, this container consists of a can copper 1, a can bottom 2, and a seam 3 between the two, and a liquid fuel storage part 4 is located inside the can. A can end member 5 is also provided at the upper end of the can copper 1 through a seaming part 3', and this can end member 5 is formed to protrude upward by, for example, drawing, and is inserted into the inside of the wall 6. An injection opening 8 is formed in the injection valve accommodating portion 7 and its upper end. A partition wall 9 is provided between the injection valve accommodating portion 7 and the liquid fuel accommodating portion 4, and this partition wall 9 is provided with a hole 10 (FIG. 2) through which the liquid fuel is conducted. The partition wall 9 and the can end member 5 are integrated by means of netting 30, adhesion, welding, or the like. In FIG. 1, the can end member 5 and the injection valve housing wall 6 are formed integrally, but the can end member 5 and the partition wall 9 are formed integrally, and the injection valve housing wall 6 is formed separately. It will be understood that it may be formed.

This injection valve accommodating portion 7 has a valve that opens by pressing,
A valve is provided which is configured to return to the closed state upon release of the pressure, and this valve is provided as having the structure described below with respect to the enlarged view of FIG. 4-A.

First, in FIG. 4-A, the injection valve housing wall 6
is inwardly squeezed into a horizontal, annular fixed sealing surface 1
1, and this wall is bent approximately 90° from the inner peripheral edge of this sealing surface towards the injection opening 8,
A circumferential or tapered fixed guide surface 12 is formed.

Furthermore, this injection valve accommodating portion 7 has a total of 1
A vertically movable body 3 shown in FIG. A non-hollow solid part 31 connected to the entire circumference of the solid part 31, which extends further toward the injection opening 8 than the solid part 31, and is located inside the fixed guide surface 12 with a small gap 32. A fixed guide portion 15 is provided.

In the specific examples shown in FIGS. 1 to 4-A,
The movable guide portions 15 are cylindrical projections, and four movable guide portions 15 are provided on the disc-shaped vertically movable body 13 at equal intervals circumferentially, and the shape and number of the guide portions are such that the shape and number of guide portions are satisfied when the valve is opened. As long as the desired flow rate is obtained and smooth vertical movement is carried out, there are no particular restrictions. For example, the number of protrusions may be an appropriate number within the range of 3 to 8, or a protrusion of a notched hollow cylinder, or a protrusion of a cross section. You can also use it as The horizontal annular movable seal portion 14 is
As best shown in Figure 4-A, it is desirable to have an arcuate cross section, so that the fixed sealing surface 1
Ensure that there is a reliable seal between the

If necessary, the vertically movable body 13 is provided with a pressing protrusion 16 at the center of the injection opening side for pressing the vertically movable body when liquid fuel is injected.
Further, this vertically movable body 13 is provided with a restoring mechanism 17 that presses and biases the vertically movable body 13 toward the injection opening 8 side during normal operation. In the specific example shown in the accompanying drawings, this restoring mechanism 17 is a push coil spring, and in order to support this coil spring 17, a spring supporting protrusion 18 is provided at the center of the vertically movable body 13 on the side opposite to the injection opening. Thus, the spring 17 is held between the central recess 19 of the partition wall 9 and the vertically movable body 13 and around the spring support protrusion 18, and constantly presses and biases the vertically movable body 13 toward the injection opening 8 side. are doing.

In addition, in FIG. 4-A, the pressing projection 16 of the vertically movable body 13 is pressed by the injection pressing projection 21 of the fuel tank 20 of the stove, and therefore the movable seal portion 14 and the fixed seal surface 11 are separated and opened. Indicates that the valve is closed.

In the present invention, the above-mentioned vertical movable body 13, solid part 31, movable seal part 14, and movable guide part 1
5. Furthermore, it is preferable that the pressing protrusion 16 and the coil spring supporting protrusion 18 are integrally formed of engineering plastics such as polypropylene, nylon, polytetrafluoroethylene, polyacetal resin, or the like. However, for example, the movable seal portion 14 may be an O-ring, and by combining this O-ring with the vertically movable body, the sealing performance can be made even more complete.

In the injection valve used in the present invention, the restoring mechanism 1
The center of the area of action on the vertically movable body 13 of 7 is located inward from the movable seal portion 14, and the movable guide portion 15 and fixed guide surface 12 are arranged such that the movable seal portion 14 and the fixed seal surface 11 are located at one point. (Figure 4-B,
26), the distal end of the movable guide part furthest from this contact point (Fig. 4-B, 27) may be provided with sufficient clearance to enable circular movement toward the injection opening. extremely important. That is, by adopting the above-mentioned configuration, even if the vertically movable body 13 of the valve is pressed in a direction that is not completely perpendicular (for example, in an oblique direction), it is not only possible to perform a reliable opening operation; Even if the vertically movable body 13 receives pressure release from a position slightly shifted in the horizontal direction, the posture of the vertically movable body 13 is automatically corrected by the combined action of the restoring mechanism 17 and the movable guide section 15. A reliable and quick occlusion recovery action becomes possible.

This effect will be explained in detail below.

First, when storing liquid fuel, the container is in an upright position with the injection opening 8 facing upward.
In this case, the movable seal portion 14 of the vertically movable body 13 and the fixed seal surface 11 of the container wall 6 engage with each other, and the liquid fuel is sealed.

For example, the fuel tank 20 of an alcohol stove
When filling the tank with fuel, as shown in FIGS. 4-A and 5, the protrusion 16 of the vertically movable body 13 is
0, and push it up. As a result, the movable seal part 14 separates from the fixed seal surface 11, and the liquid fuel 22 in the container flows from the accommodating part 4 through the hole 10, the valve accommodating part 7, the gap between both seal parts 14 and 11, and the injection opening 8. It is injected into the tank 20.

At this time, in the present invention, since the seal part is formed between horizontal planes and in an annular shape, when the vertical movement distance of the vertically movable body 13 is d and the circumferential length of the seal part is l, the opening area is dl. As a result, the amount of outflow per unit time can be increased compared to conventional valves. Moreover, since a sufficient gap is formed between the plurality of movable guide parts 15, the movable guide parts 15 do not obstruct the outflow of the fuel liquid.
Thus, using the injection container of the present invention, injection of liquid fuel can be completed within a very short time.

Simultaneously with the start of fuel injection, an amount of air 23 commensurate with the injected fuel is introduced into the container through the opposite path to that described above. This air flows into the fuel tank 20
When the interior of the container is filled with a liquid-absorbing material 33 such as glass wool, the liquid is absorbed mainly through the gap 25 formed between the tip wall 6 of the container and the tank center peripheral wall 24 that positions the tip wall 6. Supplied.

When the level of the fuel liquid in the tun reaches the level of the injection opening 8 of the container, the pressure at this point is balanced and the injection of fuel stops automatically, and the sound of air entering the container also stops. do. By listening to this sound, it is possible to know when fuel injection has stopped.

At this point, lift the container upwards and
3 pressing protrusion 16 and injection protrusion 2 of tank 20
Release the engagement with 1. As a result, the restoring mechanism 1
7 acts on the vertically movable body 13. In this case, even if the vertically movable body 13 is in a horizontally shifted position as shown in Figure 4-B,
A rapid occluding action takes place. That is, if there is such a deviation, the movable seal portion 14 and the fixed seal surface 11 will come into contact at one point 26, and the tip 27 of the movable guide portion furthest from this contact point 26 will come into contact with the fixed guide surface 12. There is. However, in the present invention, the movable guide section 15 and the fixed guide surface 12
Since the above-mentioned clearance is provided between the movable seal part 14 and the fixed seal surface 11, the movable guide part tip 27 rotates about this contact point 26 toward the injection opening 8, and the entire circumference between the movable seal part 14 and the fixed seal surface 11 is This enables quick engagement and sealing over the entire range.

In addition, as shown in FIG. 4-C, the movable seal portion 14
and the fixed sealing surface 11 come into contact at one point 28, and the movable guide closest to this contact point 28 may also come into contact with the edge 29 of the fixed sealing surface. This causes rotation of the movable body, and similarly enables engagement and sealing over the entire circumference of both seal portions 14 and 11.

Moreover, in the present invention, since the movable seal portion 14 and the fixed seal surface 11 engage with each other on the horizontal plane,
Even if the movable seal portion 14 is slightly displaced in the horizontal direction, complete sealing is possible.

As described above, in the present invention, the fixed guide surface 1
2 and the movable guide section 15 inside thereof.
A mechanism is incorporated to ensure a perfect seal against any misalignment that may occur in cases involving 2.

Furthermore, the above-mentioned advantages are achieved by combining only three simple parts, and there is also the advantage that reliable operation is possible even if there are errors in the precision of the parts.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the entire liquid fuel injection container of the present invention, Fig. 2 is a sectional view taken from the line - in Fig. 1, Fig. 3 is a top view of the container in Fig. 1, and Fig. 4 - Figure A is an enlarged sectional view of the main part of the container in Figure 1 with the valve open, and Figures 4-B and 4-C are the same main parts as in Figure 4-A with the valve closed. Figure 5 is an explanatory diagram showing the state in which liquid fuel is being poured into the tank. The side sectional view in Figure 1 is the position indicated by the dashed-dotted line in Figures 2 and 3. It is a side sectional view of , where reference numeral 1 is the can body, 2 is the can bottom, 5 is the can end member,
6 is a wall of the injection valve accommodating part, 7 is an injection valve accommodating part, 8 is an injection opening, 9 is a partition wall, 11 is a fixed sealing surface, 1
2 is a fixed guide surface, 13 is a vertically movable body, 14 is a movable seal portion, 15 is a movable guide portion, 16 is a pressing projection, 17 is a restoring mechanism (pushing coil spring),
18 is a spring support projection; 31 is a solid portion; 3
2 represents a small gap, respectively.

Claims (1)

[Claims for Utility Model Registration] 1. Consists of a liquid fuel storage section 4, an injection opening 8, and an injection valve storage section 7 provided between the liquid fuel storage section 4 and the injection opening 8, and the injection valve is In a liquid fuel injection container having a structure in which the valve opens when pressed and returns to the closed state when the pressure is released, the wall of the injection valve accommodating portion 7 is formed between a horizontal annular fixed sealing surface 11 and an inner peripheral edge of the sealing surface 11. It has a circumferential or tapered fixed guide surface 12 extending toward the injection opening 8, and is engageable with the fixed sealing surface 11 over the entire circumference of the injection valve accommodating portion 7. a horizontal and annular movable seal portion 14; a non-hollow solid portion 31 connected to the inner peripheral edge of the movable seal portion 14 over the entire circumference;
A vertically movable body 13 and a vertically movable body including a movable guide portion 15 extending toward the injection opening 8 side from the solid portion and located inside the fixed guide surface 12 with a small gap 32. 13 toward the injection opening 8 side is accommodated, and the center of the area of action of the restoring mechanism 17 on the vertically movable body 13 is located inward of the movable seal portion 14, and the movable guide part 15 and fixed guide part 1
2 refers to the movable seal portion 14 and the fixed seal surface 11.
The liquid is provided with sufficient clearance to enable circular movement toward the injection opening 8 at the tip of the movable guide section 15 furthest from the contact point when the liquid contacts at one point. Container for injection. 2. Utility model registration claim 1, characterized in that a pressing protrusion 16 for pressing the vertically movable body 13 is provided in the center portion of the vertically movable body 13 on the injection opening 8 side. Container for injection as described. 3. The restoring mechanism 17 is a push coil spring, and the vertically movable body 13 has a spring supporting protrusion 18 in the center on the opposite side from the injection opening 8.
A partition wall 9 is provided between the liquid fuel storage portion 4 and the injection valve storage portion 7, and the coil spring 17 is provided between the partition wall 9 and the vertically movable body 13 and around the spring support protrusion 18. The injection container according to claim 1 of the utility model registration claim, characterized in that: 4. The injection container according to claim 1, wherein the movable guide portion 15 comprises a plurality of protrusions arranged at intervals in the circumferential direction.