JPH08338593A - Common use device for valve protecting cap - Google Patents

Abstract

PURPOSE: To enable a valve protecting cap for a steel gas container to be used as a valve protecting cap for a light metal gas container. CONSTITUTION: A circumferential rotation lock engaging part 13 and an axial come-off preventing recess groove 14 are formed in the outer periphery of a neck part 12 of a light metal gas container 10 to which a valve protecting cap 11 for a steel gas container is attached. A neck ring 16 having an inner diameter with which the ring 16 can be fitted on the neck part 12 and an outer diameter with which the ring 16 can be fitted in an annular base 15 of the valve protecting cap 11 is interposed between the valve protecting cap 11 and the neck part 12. The neck ring 16 is formed therein with an engaging mate 17 adapted to be engaged with the engaging part 13, and a come-off preventing member 19 is fitted in the groove 14 in such a condition that the locking end 18 formed at the inner periphery of the annular base 15 is locked to the neck ring 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sharing a valve protection cap of a steel gas container also as a valve protection cap of a light alloy gas container.

[0002]

2. Description of the Related Art For example, there are high-pressure gas containers filled with carbon dioxide gas, liquefied petroleum gas, etc. made of light alloy made of aluminum alloy and made of steel made of iron alloy. The distribution routes of are overlapping.

A cap A for protecting a valve attached to a light alloy gas container has a neck ring portion C which fits in a neck portion B and freely rotates as shown in FIG.
As shown in FIGS. 3 and 4, the protective cap (11) of a steel gas container that is more commonly distributed is attached to the neck B using a screw-type neck ring, and the retaining ring D is not necessary. is there.

Therefore, conventionally, it was impossible to use the protective cap of the steel gas container as it is for the light alloy gas container. This type of protective cap is made of synthetic resin and is a consumable item, but as a result, the protective cap of the light alloy gas container is deficient and tends to be prone.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and its object is to make a valve protection cap for a gas container made of a light alloy, in addition to a dedicated cap for the valve, a steel container made of steel. It is to be able to use the valve protection cap used in the gas container.

[0006]

In order to solve the above problems, the present invention is directed to a circumferential detent on the outer periphery of a neck portion 12 of a light alloy gas container 10 to which a valve protection cap 11 of a steel gas container is attached. Forming an engaging portion 13 and a concave groove portion 14 for retaining in the axial direction, and having an inner diameter that fits outside the neck portion 12 and an outer shape that fits inside the annular base portion 15 of the valve protection cap 11. The neck ring 16 is interposed between the valve protection cap 11 and the neck portion 12, and the neck ring 16 further engages with the engaging portion 13 that engages with the engaging portion 13.
7 is provided, while it is formed at a height lower than that of the concave groove portion 14 when it is inserted into the neck portion 12, and the engagement end 18 provided on the inner circumference of the annular base portion 15 is engaged with the neck ring 16. The retaining member 19 is fitted in the groove portion 14.

[0007]

In the case of the present invention, since the light alloy gas container 10 is only provided with the engaging portion 13 and the concave groove portion 14, what is necessary to mount the original valve protection cap A for the light alloy gas container? There is no problem. That is, as shown in FIG. 5, it is possible to freely rotate the valve protection cap A exclusively for the light alloy gas by using the valve protection cap A.

Further, by using the neck ring 16, the valve protection cap 11 for the steel gas container is also used as the light alloy gas container 1.
It can now be used as a zero valve protection cap. Further, when the threaded portion 22 is formed on the outer circumference of the neck ring 16 and is screwed into the female threaded portion 21 formed on the annular base portion 15 of the valve protection cap 11, the valve protection cap 11 does not rotate.

[0009]

1 shows a light alloy gas container 10 used in the present invention, in which a tip end (upper end) of a cylindrical container body has a valve mounting port for taking in and out gas. It has a neck portion 11.

Although the valve protection cap A for the light alloy gas container 10 (see FIG. 5) is originally attached to the neck portion 11, in the case of the present invention, the valve protection cap for the steel gas container (see FIG. 4). 11) can also be used for the light alloy gas container 10. Therefore, the neck ring 16 is mounted as an adapter between the neck portion 12 and the valve protection cap 11 having a larger diameter than that.

On the outer periphery of the neck portion 12 of the light alloy gas container 10, there are provided an engaging portion 13 for preventing rotation in the circumferential direction, and a concave groove portion 14 for preventing the cylindrical container 10 from coming off in the axial direction. To form. The engaging portion 13 is composed of two surfaces parallel to each other,
The concave groove portion 14 is provided in the circumferential direction near the upper end of the neck portion 12 that overlaps with the engaging portion 13. It suffices that there be at least one engaging portion 13, and the engaging portion 13 is not limited to a flat surface and may be, for example, a groove in the axial direction.

The neck ring 16 has an inner diameter that fits outside the neck portion 12 and an annular base portion 1 of the valve protection cap 11.
5 is an annular member having an outer diameter that fits inside 5 (see FIG. 2). An engagement partner 17 that engages with the engagement portion 13 is formed on the inner peripheral wall thereof. The engagement partner 17 has a shape complementary to that of the engagement portion 13, and the illustrated one has two surfaces parallel to each other. However, this may vary depending on the form of the engagement portion 13.

Further, the steel gas container has a valve protection cap 11
Since the inner peripheral portion of the annular base portion 15 has the female screw portion 21, a male screw portion 22 that can be screwed with the female screw portion 21 is formed on the outer peripheral surface of the neck ring 16. Reference numeral 23 is a small-diameter portion at the lower end of the neck ring, and a locking end 18 protruding inward is hooked (locked) at the lower end of the valve protection cap 11 described below.

As described above, the valve protection cap 11 is a valve protection cap for a steel gas container, and has a size capable of enclosing and protecting the valve, and at the same time, it has a plurality of parts for routing the gas pipe and operating the valve. The opening 24 is provided.

In such a device, the neck ring 16 is first inserted into the valve protection cap 11 of the steel gas container from above, and the female screw portion 21 and the male screw portion 22 are screwed together to assemble them integrally, and thereafter, The neck ring 16 is inserted from above into the neck portion 12 of the light alloy gas container 10 at the central hole, and the engaging portion 13 and the engaging partner 17 are aligned and pushed completely. Then, the portion of the neck portion 12 above the recessed groove portion 14 projects upward from the central hole portion of the neck ring 16, so that the retaining member 19 can be fitted in the recessed groove portion 14, and the steel gas container valve Attachment of the protective cap 11 to the light alloy gas container is completed (FIG. 4).

[0016]

Since the present invention is constructed and operates as described above, the original valve protection cap A can be used for the light alloy gas container 10 and, at the same time, the neck ring 16 must be used together. As a result, the valve protection cap 11 for a steel gas container can be used. As a modification for that, the neck portion 12 has an engaging portion 13 and a concave groove portion 14.
Since the above process is only required, it is remarkably easy to carry out, and there is an effect that the valve protection cap 11 for a steel gas container can be effectively used.

[Brief description of drawings]

FIG. 1A is a plan view of a main part of a light alloy gas container. (B) The front view of the principal part which showed a part of above-mentioned container by the cross section.

FIG. 2A is a plan view showing an embodiment of a neck ring. (B) The front view which represented a part of ring same as the above with a cross section.

FIG. 3 is an exploded perspective view showing an embodiment of a valve protection cap sharing device according to the present invention.

FIG. 4 is a front view showing a part of the same embodiment in section.

FIG. 5 is a front view showing a cross-section of a part of a state in which a valve protection cap for a light alloy gas container is attached to the gas container.

Claims (3)

[Claims] 1. A valve protection cap shared device for mounting a valve protection cap of a steel gas container as a valve protection cap of a light alloy gas container, wherein a valve protection cap 11 of a steel gas container is mounted. On the outer circumference of the neck portion 12 of the light alloy gas container 10, there are formed an engagement portion 13 for preventing rotation in the circumferential direction and a recessed groove portion 14 for preventing slippage in the axial direction, and are fitted to the outside of the neck portion 12. A neck ring 16 having a full inner diameter and an outer shape that fits inside the annular base portion 15 of the valve protection cap 11 is interposed between the valve protection cap 11 and the neck portion 12, and the neck ring 16 further includes the engagement portion 13 described above. While providing an engaging partner 17 for engaging with the neck portion 1,
When it is inserted into the groove 2, the retaining member 19 is formed to have a height lower than that of the concave groove portion 14, and the retaining end 18 provided on the inner circumference of the annular base portion 15 is retained by the neck ring 16 so that the retaining member 19 is recessed. 1
A common device for valve protection caps, which is fitted in 4. 2. The valve protection cap according to claim 1, wherein a male screw portion 22 which is formed on the inner circumference of the annular base portion 15 of the protection cap 11 and is screwed with the screw portion 21 is formed on the outer peripheral surface of the net ring 16. Shared device. 3. The engagement part 13 comprises two surfaces parallel to each other, and the concave groove part 14 comprises a circumferential groove provided near the upper end of the neck part 12 overlapping with the engagement part 13. Shared device for valve protection cap.