JPH0417917Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cap mounting structure for protecting a valve attached to a high-pressure gas container.

(Prior Art) Since the valve of a high-pressure gas container has a gas piping connection port and a safety valve, a notch or the like is provided in the cap that protects the valve to facilitate work. However, when the cap is screwed onto the gas container, it is difficult to align the direction of the connection port or safety valve with the position of the notch.

(Technical Problem) The purpose of the present invention is to solve the above-mentioned problems and to provide a mounting structure for a valve protection cap for a high-pressure gas container, which allows the protection cap to be oriented in any direction and fixed in any position. It is about providing.

(Technical Means) In order to achieve the above object, the present invention is provided at the upper mounting port of the high-pressure gas container 1 having a pressure-resistant structure,
A protective cap 5 is attached to the top of the high-pressure gas container 1 to which the valve 2 is attached so as to protect the valve 2 for injecting gas into the container and discharging gas from the container. The protective cap 5 has at least one opening on the side surface for access to the valve 2, and is formed into a substantially cylindrical shape with an open top and bottom, and is connected to the valve attachment port of the high pressure gas container 1. An annular neck ring 3 having a size to be connected to the lower opening of the protective cap 5 is fixed around the neck ring 3, and the neck ring 3 and the protective cap 5 are connected to an internal thread 4a formed on the upper outer periphery of the neck ring 3. Screw means 4 formed on the inner peripheral base of the protective cap 5 and consisting of an internal thread 4b
is rotatably connected to the female thread 4.
A notched groove 7 in which the tip of a set screw 6 that is screwed into the screw hole 15 that penetrates the lower protective cap 5 of a comes into contact with.
is provided around the entire circumference below the external thread 4a of the neck ring 3, and the notch groove 7 is formed on the protective cap 5.
A technical measure has been taken to make the length approximately equal to the movement width d of the set screw 6 which corresponds to the amount of movement of the screw means 4 when the screw means 4 is rotated by a certain angle.

EXAMPLE By way of illustration, a high-pressure gas container 1 has an end-mounted valve 2 to which a protective cap 5 is attached by screw means 4 to a neck ring 3 attached to the high-pressure gas container 1. . Part 4
4b indicates a female thread formed inside the mouth ring 10 of the protective cap 5.

As shown in each figure, the protective cap 5 has large and small notches 8 and 9 at symmetrical positions, and when screwed together with the screw means 4, the end surface 11 of the neck ring 10 abuts against the step 12 of the neck ring 3. (Fig. 3), but at that time, as shown in Figs. 2 and 4, make sure that the connection port 13 is aligned with the large notch 8, and the safety valve 14 is aligned with the small notch 9, respectively.
A set screw 6 and a notched groove 7 to which the tip thereof is fastened are provided.

That is, the set screw 6 has a threaded hole 15 passing through the mouth ring 10.
The notch groove 7 formed between the external thread 4a of the neck ring 3 and the stepped portion 12 is tightened. At that time, the amount of screwing of the screw means 4 that occurs when the protective cap 5 is unscrewed one turn from the maximum screwing position where the end surface 11 of the cap hits the step 12 of the neck ring 3, that is, the female thread 4b is 1 The width of the cutout groove 7 is extended by a movable width d corresponding to the size of the pitch s coming out (Fig. 3). In the case of FIG. 3, the movement width d is shown to be longer than the pitch s. This is because there was a margin, so d=s is fine. If the connection port 13 can be directed toward either the large or small notch 8 or 9, the movement width d may be 1/2 pitch.

(Operation of the invention) In the above-described configuration, when installing the protective cap 5, the set screw 6 is moved back and the valve 2 is fixed to the high pressure gas container 1 in advance.
The female thread 4d is screwed into the male thread 4a of the neck ring 3, which is also fixed to the high pressure gas container 1, and the cap end face 11 is butted against the stepped part 12 of the neck ring 3, and each notch 8, 9 and the connection port are 13. Look at the positional relationship with the safety valve 14. At that time, it is good if the connection port 13 is already in the large notch 8, but if not, screw back the protective cap 5 and align the large notch 8 with the connection port 13 and the small notch 9 with the safety valve 14.
While maintaining this state, the set screw 6 is screwed forward and its tip is fastened to the notch groove 7. As for the amount of adjustment, the movement width d is 1 pitch s, so the protective cap 5 can rotate once, and therefore can be directed in any direction of 360 degrees. is retained.

Therefore, according to the present invention, the orientation of the protective cap 5 can be freely selected within a certain angle range, and the set screw 6 can be freely selected.
Since it can be tightened and fixed, it has the effect of being able to match the position of the connection port of valve 2 and the safety valve. Conventionally, if the position of the notch and connection port etc. does not match, it is necessary to remove or loosen the cap 5 one by one. This eliminates the inconvenience of having to turn around and open/close the valve. Since this embodiment can be achieved by newly providing the threaded hole 15 of the set screw 6 and forming the cutout groove 7, a conventional cap can also be used for convenience, and even if it is a new cap, it is very easy to implement.

[Brief explanation of the drawing]

The drawings show the mounting structure of a valve protection cap for a high-pressure gas container according to the present invention, in which Fig. 1 is an exploded perspective view of the embodiment, Fig. 2 is a longitudinal sectional view, and Fig. 3 is an enlarged sectional view of the main parts. FIG. 4 is an explanatory plan view. 1...High pressure gas container, 2...Valve, 3...Neck ring, 4...Screw means, 5...Protection cap, 6...Set screw, 7...Notch groove, d...Movement width, 15... Spiral hole.

Claims (1)

[Scope of utility model registration request] The valve 2 is provided at the upper mounting port of the high-pressure gas container 1 having a pressure-resistant structure so as to protect the valve 2 for injecting gas into the container and discharging gas from the container. In the structure in which the protective cap 5 is attached to the upper part of the attached high pressure gas container 1, the protective cap 5 has at least one opening on the side surface for accessing the valve 2, and has an approximately open top and bottom. An annular neck ring 3 having a cylindrical shape and having a size to be connected to the lower opening of the protective cap 5 is fixed around the valve installation opening of the high pressure gas container 1. The cap 5 is rotatably connected to the cap 5 by a screw means 4 consisting of an internal thread 4a formed on the upper outer periphery of the neck ring 3 and an internal thread 4b formed on the inner periphery base of the protective cap 5. A notched groove 7 is provided on substantially the entire circumference below the external thread 4a of the neck ring 3, and the tip of the set screw 6 which is screwed into the screw hole 15 passing through the lower protective cap 5 comes into contact with the notched groove 7. ,
The moving width d of the set screw 6 is commensurate with the moving amount of the screw means 4 when the protective cap 5 is rotated by a certain angle.
A mounting structure for a valve protection cap for a high-pressure gas container, characterized by having approximately the same length as.