JP3097794U - Gas cylinder residual gas removal device - Google Patents

Abstract

[PROBLEMS] To remove residual gas from a gas cylinder, which can use a conventional packaging box as it is and can suppress an increase in product cost by using an adapter nozzle and a cap, which are accessories of the gas cylinder, in combination for a gas release tool. To provide.
A gas cylinder (1) having a gas discharge nozzle (4) that opens at the time of descent and rises and returns at normal times to close the valve and has a gas vent hole (6) at the center of the top. A cap 2 having a top inner surface which is separated from the gas discharge nozzle 4 and protects the nozzle 4 in a closed state at the time of fitting, a periphery of the gas discharge nozzle 4 and the cap 1 A plurality of adapter nozzles 3 housed in a space between the inner peripheral surface of the gas cylinder and a cap 2 by inserting one of the adapter nozzles 3 into the gas discharge nozzle 4 and removing the cap 2 when removing residual gas. 1 was fitted to the upper surface to degas.
[Selection diagram] Fig. 1

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an apparatus for removing residual gas from a gas cylinder.
[0002]
[Prior art]
For example, a gas cylinder for a gas lighter may explode in a post-treatment process if the gas remains when the gas cylinder is discarded after use. Therefore, a measure for extracting the residual gas is required.
As conventional countermeasures for removing residual gas, Japanese Utility Model Application Laid-Open No. 55-119170 (hereinafter referred to as Known Document 1), Japanese Utility Model Application Laid-Open No. 6-69600 (hereinafter referred to as Known Document 2), and Utility Model Registration No. 3016470. (Hereinafter referred to as known document 3) and the like have been proposed.
[0003]
[Problems to be solved by the invention]
The thing of the above-mentioned known document 1 uses a gas venting tool made of a separate part having a shape that fits inside the cap of the gas cylinder. The gas venting hole is formed at the center of the gas venting tool and at the top of the cap. That is, only when the gas cylinder is discarded, the gas venting tool is used by fitting it into the cap. However, since this degassing device is a dedicated part for degassing after use, it must be packed in a state with the cap removed before shipping the gas cylinder product. It is necessary to use a packaging box with extra space for minutes. In addition, a dedicated mold for the degassing tool is required, and there is a problem that the cost of the product is increased as a whole.
[0004]
Further, both of the above-mentioned known documents 2 and 3 have a configuration in which a degassing tool is projected downward on the inner surface of the top of the cap of the gas cylinder, and a convex edge is provided on the outer peripheral surface of the top of the cap. At this time, the cap is turned upside down and attached to the gas cylinder, whereby the gas discharge nozzle of the gas cylinder is pushed down by the gas release tool to release the gas through the gas release hole. However, since this gas venting tool projects downward on the inner surface of the top of the cap, the conventional cap mold cannot be used as it is, and a new mold must be manufactured. In addition, the height of the cap is increased by the amount of the degassing device, so that a conventional packaging box cannot be used, and a new tall packaging box must be used, resulting in an increase in product cost.
[0005]
As described above, the conventional measures require a new packaging box and increase the product cost.
Therefore, the present invention combines the adapter nozzle and the cap, which are accessories of the gas cylinder, with the gas cylinder and uses it as a degassing tool. It is an object to provide a gas extraction device.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a gas cylinder having a gas discharge nozzle at the center of the upper surface, which is opened at the time of descent, and normally closed at the time of ascending and returning, and
A cap having a gas vent hole at the center of the top, capable of being fitted to the upper surface of the gas cylinder, and having a top inner surface which is separated from the gas discharge nozzle and protects the nozzle in a closed state when fitted;
A plurality of adapter nozzles housed in a space between the periphery of the gas discharge nozzle and the inner peripheral surface of the cap,
At the time of removing residual gas, gas is released by inserting one of the adapter nozzles into the gas discharge nozzle and fitting a cap on the upper surface of the gas cylinder.
[0007]
Since the present invention is configured as described above, the conventional packaging box can be used as it is by combining the adapter nozzle and the cap, which are the accessories of the gas cylinder, with the cap and used as a degassing tool, thereby suppressing an increase in product cost. An apparatus for removing residual gas from a gas cylinder can be provided.
That is, generally, the shape of the gas filling port of the gas lighter differs depending on the gas lighter manufacturer, the type of the product, and the like, and an adapter nozzle adapted to the shape is sold together with the gas cylinder as an accessory. Focusing on this point, the present inventor made only a gas vent hole at the top of the cap, and then inserted the adapter nozzle, which was conventionally sold as an accessory of the gas cylinder, into the gas discharge nozzle of the gas cylinder. By using the gas discharge nozzle, the height of the gas discharge nozzle is raised, and the gas discharge nozzle is pushed down on the inner surface of the top of the cap, so that the gas discharge nozzle is used as a degassing tool. As a result, according to the residual gas release measure of the present invention, the height of the cap may be the same as the conventional one, and only the vent hole needs to be clear, it is possible to cope easily and inexpensively, and the conventional packaging box can be used as it is. Thus, it is possible to provide a gas cylinder residual gas extracting device capable of suppressing an increase in product cost.
[0008]
Further, the cap of the present invention is characterized in that an annular guide portion is provided on the inner surface of the top of the cap so as to engage with the tip of the adapter nozzle and to perform centering.
According to this configuration, at the time of removing residual gas, the annular guide portion engages with the tip of the adapter nozzle to perform centering and aligns the gas vent hole at the top of the cap with the adapter nozzle to facilitate residual gas release. be able to.
[0009]
[Embodiment of the invention]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1A and 1B show a first embodiment of the present invention, in which a dome-shaped cap 2 is fitted on the upper surface of a gas cylinder 1, an adapter nozzle 3 is inserted, and the remaining gas cylinder 1 is left. It is a side view of the gas cylinder 1 at the time of gas removal, and the normal time with the adapter nozzle 3 removed, and shows the left half of the cap 2 in cross section.
The gas cylinder 1 is made of a metal plate, has a closed cylindrical shape, has a gas discharge nozzle 4 at the center of the upper surface, and has an annular locking flange 5 around which the cap 2 is fitted and held. The gas discharge nozzle 4 opens when descending and ejects the gas enclosed therein, and normally rises and returns to close during normal operation to stop the gas ejection.
[0010]
As shown in FIGS. 1 and 2, the cap 2 is made of resin and has a dome shape, has a gas vent hole 6 at the center of the top, and engages with the tip of the adapter nozzle 3 on the inner surface of the top to center the cap. An annular guide portion 7 is provided. On the inner peripheral surface of the lower end of the cap 2, a locking projection 8 is formed which is engaged with an annular locking flange 5 around the upper surface of the gas cylinder 1 to fit and hold the cap 2 on the upper surface of the gas cylinder 1. Have been.
Normally, as shown in FIG. 1B, when the cap 2 is fitted to the upper surface of the gas cylinder 1, the cap 2 separates from the gas discharge nozzle 4 and protects the inner surface of the top portion of the gas cylinder 1 in a closed state. Have.
[0011]
As shown in FIG. 3, a plurality of adapter nozzles 3 adapted to the shape of the gas filling port of the gas lighter that varies depending on the gas lighter manufacturer and the type of the product are provided with legs 10 around the ring-shaped support 9. The ring-shaped support member 9 is loosely fitted around the gas discharge nozzle 4 on the upper surface of the gas cylinder 1, and is disposed between the gas discharge nozzle 4 and the inner peripheral surface of the cap 2. It is stored in the space and sold together.
In the present invention, at the time of removing residual gas, as shown in FIG. 1A, one of the adapter nozzles 3 is cut off from the ring-shaped support 9 and inserted into the gas discharge nozzle 4 to attach the cap 2 to the gas cylinder 1. The height of the gas discharge nozzle 4 is raised by the adapter nozzle 3 by pushing the gas discharge nozzle 4 down through the adapter nozzle 3 on the inner surface of the top of the cap 2 to open the valve. It is made to be able to do. In this case, since the annular guide 7 is provided on the inner surface of the top of the cap 2, the annular guide 7 and the tip of the adapter nozzle 3 inserted into the gas discharge nozzle 4 are centered, and the top of the cap 2 is The center gas vent hole 6 and the adapter nozzle 3 inserted into the gas discharge nozzle 4 are aligned, and the residual gas in the gas cylinder 1 is easily vented.
[0012]
FIG. 4 shows a second embodiment of the present invention, in which the cap 2 is applied to a cylindrical one having a flat top, and the other configuration is the same as that of the first embodiment. Also in this case, a state is shown in which the adapter nozzle 3 is inserted into the gas discharge nozzle 4 and the residual gas in the gas cylinder 1 is released by the cap 2. In addition, since the adapter nozzle 3 is normally removed from the gas discharge nozzle 4, even when the cap 2 is fitted to the gas cylinder 1, the inner surface of the top of the cap 2 does not contact the tip of the gas discharge nozzle 4 and is separated. Gas does not erupt.
[0013]
Although the embodiment of the present invention has been described above mainly using the adapter nozzle 3, the scope of the present invention is also applicable to the case where an adapter dedicated to degassing is added to a plurality of adapter nozzles and this is used. It is included in.
[0014]
[Effect of the invention]
According to the present invention, by combining an adapter nozzle and a cap, which are accessories of a gas cylinder, with a gas release tool, the conventional packaging box can be used as it is, and the remaining gas cylinder, which can suppress an increase in product cost, can be used. A degassing device can be provided.
[Brief description of the drawings]
1 (A) and 1 (B) show a first embodiment of the present invention, and are side views of a gas cylinder equipped with a dome-shaped cap at the time of removing residual gas and at a normal time. Is shown in cross section.
FIG. 2 is a plan view of the cap of FIG.
FIG. 3 is a perspective explanatory view of an adapter nozzle sold together as an accessory of a gas cylinder.
FIG. 4 shows a second embodiment of the present invention, and is a side view of a gas cylinder equipped with a cylindrical cap having a flat top when removing residual gas.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 gas cylinder 2 cap 3 adapter nozzle 4 gas discharge nozzle 5 annular locking flange 6 gas vent hole 7 annular guide 8 locking projection 9 ring-shaped support 10 leg

Claims (2)

A gas cylinder provided with a gas discharge nozzle at the center of the upper surface, which opens at the time of descent, and normally rises, returns, and closes the valve,
A cap having a gas vent hole at the center of the top, capable of being fitted to the upper surface of the gas cylinder, and having a top inner surface which is separated from the gas discharge nozzle and protects the nozzle in a closed state when fitted;
A plurality of adapter nozzles housed in a space between the periphery of the gas discharge nozzle and the inner peripheral surface of the cap,
A residual gas removing device for a gas cylinder, characterized in that at the time of removing residual gas, one of the adapter nozzles is inserted into the gas discharge nozzle and a cap is fitted on the upper surface of the gas cylinder to perform gas release. 2. The apparatus for removing residual gas from a gas cylinder according to claim 1, wherein an annular guide portion is provided on an inner surface of a top portion of the cap so as to engage with a tip end of the adapter nozzle and to center the guide portion.

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