JPS604933Y2 - Cartridge type fuel tank mouthpiece cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cartridge-type fuel tank for an kerosene heater, which is equipped with a mouthpiece lid provided with a lubrication valve, and to a structure for connecting the mouthpiece lid to the fuel tank.

2. Description of the Related Art As fuel tanks for kerosene stoves in homes, so-called cartridge fuel tanks equipped with a cap with a lubrication valve have rapidly become popular since about 1999.

In FIG. 1 showing an embodiment of this type of fuel tank, 1 is a mouthpiece lid provided with a lubricating valve that is screwed onto the mouthpiece body 3 of the fuel tank 2, and 5 is an outer part of the top part 1a of the mouthpiece lid 1. A female valve 6 is provided with a truncated conical projection in the form of a truncated conical projection;
It is a cylindrical valve case that is fixed with a spot on the inner surface and stands upright at the center of the inner surface of the mouthpiece lid 1.

A male valve 8 made of a rubber lump inscribed in the female valve 5 is fixed to the tip 7a, and the other end 7b is slidably inserted through a holding hole 6c provided in the center of the ceiling 6b of the valve case 6. Also, a valve shaft is always urged toward the female valve 5 side via the male valve 8 by a spring 9, 10 is an oil container provided below the valve case 6, and 11 is a seal between the cap body 3 and the cap lid 1. It is a patch made of rubber etc. that is used to enhance sex.

The lubrication valve 4 is composed of a female valve 5 and a male valve 8 fixed to a valve shaft 7.

The tip 7a of the valve shaft 7 is provided so as not to protrude beyond the top 5a of the female valve 5.

Fill the fuel tank 2 with fuel, and attach the cap lid 1 to the cap body 3.
After screwing on, when the valve shaft 7 is pushed upwards through the tip 7a by the protrusion provided on the kerosene stove, the lubrication valve 4 is opened. Fuel necessary for the kerosene stove is supplied from a fuel tank 2.

The mouthpiece lid 1 on which the oil filling valve 4 is installed is removed when filling the fuel tank 2 with fuel, but if the removed mouthpiece lid 1 is accidentally dropped on the floor, the valve part becomes deformed and becomes unusable. Or they are often lost.

Therefore, conventionally, as shown in FIG. 1, a through hole 7c is provided in the other end 7b of the valve shaft 7 projecting to the outside, and a chain stopper ring 12 is attached to the ring 12.
The other end 1 of the chain 14 is attached to one end 14a through the
4b is fixed to the inside of the mouthpiece body 3 to connect the fuel tank 2 and the mouthpiece lid 1, thereby preventing the above-mentioned accident.

However, this structure has many deficiencies.

That is, when screwing the cap lid 1 onto the cap body 3, the chain 14 wraps around the other end 7b of the valve shaft 7, lifts the valve shaft 7 toward the opening of the oil filler valve 4, and attaches the fuel tank 2 to the kerosene stove. When the valve cap 1 is placed downward for installation, a large amount of oil may leak out, which in unfortunate cases may even cause a fire, or the ball chain 14 may be attached to the valve shaft 7. Accidents may also occur where the cap 1 is screwed onto the cap body 3 while it is still wrapped, and the chain 14 is torn off.

In addition, there are many parts such as the chain stop ring 12 and the chain stop metal fitting 13, which increases the parts cost, and it also requires drilling holes in the valve shaft 7 (requires a lot of man-hours), installing the chain stop ring 12 on the valve shaft 7, and the ring 12. Attaching the chain stopper 13 to the
There is a disadvantage that the cost of the cap M1 equipped with the oiling valve 4 is high because the number of man-hours and the number of man-hours required for attaching the chain 14 to the metal fitting 13 is high.

For example, when the mouthpiece lid 1 and valve case 6 are made of iron, the mouthpiece lid 1 with lubrication valve 4 is approximately 5 CP3, and when the above-mentioned steel is made of stainless steel, the mouthpiece lid 1 with lubrication valve 4 is approximately 7 CP3. , the total cost of parts and processing for connecting them will be approximately 1 hour, and the former will increase the cost by 30% and the latter by 20%.

Despite the above-mentioned drawbacks, manufacturers of kerosene stoves have been struggling for many years because there is no suitable alternative.

This invention was devised to solve the above problems, and by adopting a structure that is extremely easy to manufacture and easy to attach the chain, the number of parts used is reduced and the number of man-hours required for installation is reduced. The purpose is to reduce the cost of the cap and cap, and to provide a cap that does not cause accidents such as oil leakage.

FIG. 2, which shows an embodiment of the present invention, will be described below.

15 is a ball 14c bored in the ceiling 6b of the valve case 6.
An attachment hole for a round ball chain 14 having a diameter of 172,
16, as shown in FIG.
The ball 14 of the ball chain 14 is connected to the attachment hole 15 through the ball 7a.
an opening 1'7 having an opening area large enough to allow c to freely pass through;
This is a cut-and-raised piece provided with a cut-and-raised neck portion 16a that can be cut out from the ceiling portion 6b of the valve case 6 to form a cut-and-raised neck portion 16a that can also close the passage 17a and the opening 17.

The names and functions of the other symbols are the same as in FIG.

To fix the chain 14 to the cap 1, first insert the valve shaft 7 into the holding hole 6c of the valve case 6 with the raised piece 16 raised, and fix the bottom 6a to the inner surface of the top 1a of the cap 1. Afterwards, one end 14a of the chain 14 is inserted into the valve case 6 through the opening 17 at the bottom of the cut and raised piece 16, and the valve case 6 is closed.
The passage 17a is inserted through the connecting line 14d so that one end ball 14c fixed to the connecting line 14d remains inside.
It is better to move the chain 14 from there to the attachment hole 15 and return the cut and raised piece 16 to close the opening 17 and the passage 17a.

The other end 14b of the chain 14 is attached to the fuel tank 2 in the conventional manner.
By fixing it to the inside of the mouthpiece body 3, the mouthpiece cover 1 and the fuel tank 2 can be connected.

Since the opening 17 into which the chain 14 is inserted and the passage 17a are blocked by the cut-and-raised piece 16, the chain 14 cannot be moved from the attachment hole 15.
Since the diameter of the ball 14c is 172nd, due to the ball 14c remaining inside the valve case 6, the ball chain 14 will never come out of the valve case 6 under the specified tensile load (15 kg) of the ball chain 14. do not have.

In this case, the attachment hole 15 can be easily formed, and the cut-and-raised piece 16 can also be formed very easily.

In addition, since there is no need to fix the bead chain 14 to the valve shaft 7, the other end 7b protruding outward can be made to the minimum necessary length without being too long.
Even if the valve chain 14 is turned, the ball chain 14 will never wrap around the valve shaft 7.

Furthermore, since the chain 1.4 can be fixed by a simple operation of inserting the opening 17, moving it to the mounting hole 15, and returning the cut and raised piece 16, the number of man-hours required for mounting can be significantly reduced, and the number of steps required for mounting can be significantly reduced. can be abolished.

In the above embodiment, the diameter of the attachment hole 15 of the chain 14 is about 172nd of the diameter of the ball 14c, but it is sufficient that the diameter is less than the diameter that prevents the ball 14C from falling out and larger than the diameter of the connecting wire 14d. In addition, it is round and has a width of 1 ball as shown in Figure 4.
A rectangular attachment hole 15' having a required length less than 4c in diameter and larger than the diameter of the connecting wire 14d may be used.In short, the attachment hole 15 is
An opening 17 into which a chain 14 can be inserted, which can be closed with a cut and raised piece 16, and a chain 14 connected to the opening 17.
The shape is not limited to the above, as long as it has an opening area that does not cause holes.

Also, the opening 17 is connected to the mounting hole 1 through the rectangular passage 17a.
5, but the shape is not limited to the above as long as the connecting wire 14d can be moved from the opening 17 to the attachment hole 15.

In addition, although it has been described that the mounting hole 15 and the cut-and-raised piece 16 are provided in the valve case 6 into which the valve shaft 7 is inserted, it is also applicable to a cylindrical valve case in which the valve shaft 7 is not used, such as that of Japanese Utility Model Publication No. 55-46835. There is no question that it can be done.

The present invention provides a mouthpiece lid for a cartridge type fuel tank, characterized in that a valve case is provided with an attachment hole for a chain, and a trigger piece that closes an opening connected to the attachment hole into which the chain can be inserted. Therefore, the following effect is produced.

(1) The attachment hole for the chain can be formed extremely easily, and the number of parts used and the number of man-hours for attachment can also be reduced, so the cost of the cap can be reduced.

(2) The structure is excellent in terms of disaster prevention, as it never causes the accidents that occur when the conventional ball chain wraps around the valve shaft.

[Brief explanation of the drawing]

Figure 1 shows an example of a conventional fuel tank.
The figure shows one embodiment of the present invention, where A is a plan view of the cap and the mouth is A.
-A sectional view, FIG. 3 is a perspective view of the vicinity of the attachment hole, and FIG. 4 is a plan view of another embodiment of the attachment hole. 1... Cap, 1a... Top, 2...
... Fuel tank, 3 ... Base body, 5 ...
...Female valve, 6...Valve case, 7...
...Valve shaft, 7a... Tip, 7b...
...Other end, 8...Male valve, 14...Ball chain, 15...Mounting hole, 16...Drawing piece, 17. ·····Aperture.

Claims (1)

[Scope of utility model registration request] The male valve is inscribed in the female valve that protrudes outward at the center of the top, and the other end of the valve shaft fixed to the tip is slidably inserted into the valve case that stands up at the center of the inner surface, and the valve body of the fuel tank is assembled. In the mouthpiece lid that is screwed onto the fuel tank, an attachment hole for a chain connecting the removed mouthpiece lid to the fuel tank, and a triggering piece that closes an opening into which the chain connected to the attachment hole can be inserted. A spout lid for a Gartridge type fuel tank, characterized in that the valve case is provided with: