JP3243163U - POL-Coupling Female Connection Fitting - Google Patents

Abstract

The present invention provides a POL-coupling/female connection joint capable of easily connecting a POL connection of a high-pressure hose to a coupling connection of an LP container with a coupling. A main body (10) has a gas flow path (10c) with both ends opened, and has a joint-side POL connection (11) at one end and a joint-side coupling connection (12) at the other end. . The joint-side POL connection portion 11 can connect a POL connection portion of a high-pressure hose to one end of the gas flow path 10c. The joint-side coupling connection portion 12 can connect a coupling connection portion of an LP gas container with a coupling to the other end of the gas flow path 10c. As a result, the operator can easily connect the POL connection portion of the high-pressure hose to the POL connection portion of the conventional LP gas container and the coupling connection portion of the LP gas container with a coupling. , the supply of LP gas can be smoothly advanced. [Selection drawing] Fig. 1

Description

The present invention relates to a POL-coupling female connection joint.

Conventionally, there are various technologies related to valves or adapters attached to containers of liquefied petroleum gas (hereinafter referred to as LP gas).

For example, Japanese Patent Laying-Open No. 2003-185097 (Patent Document 1) discloses an LP gas container valve that includes a pressure regulator mounting port, a sleeve, and a check valve. In this LP gas container valve, the pressure regulator mounting port is provided with a groove on its outer peripheral end and a female screw on its inner periphery. The sleeve is screwed into the female thread, and a stepped portion with a reduced diameter and a tapered surface serving as a receiving seat are formed on the inside of the sleeve, followed by an outer cylinder having a larger outer diameter than the sleeve. , the inner surface of which is provided with a female thread. The check valve is housed in the sleeve and provided at the back of the mounting opening. This makes it possible for the LP gas container valve to be compatible with both screw-in type pressure regulators and coupling type pressure regulators.

Japanese Patent Laying-Open No. 2010-175066 (Patent Document 2) discloses a coupling valve adapter that includes a body portion, a socket portion, and a connecting portion. In this coupling valve adapter, the main body has a gas flow path that is open at both ends. The socket detachably connects one opening of the gas flow path and a gas inlet/outlet port of a container valve with a quick coupling attached to the neck of the LP gas container. The connecting portion is of a female screw type, and detachably connects the other opening of the gas flow path and the container mounting portion of the angle valve. As a result, it is possible to provide a coupling valve adapter that allows LP gas to be filled without a dedicated filling head for an LP gas container with a quick coupling.

JP 2003-185097 A JP 2010-175066 A

Currently, LP gas containers with couplings (conventional steel containers and recent FRP composite containers exist) can be connected to pressure regulators or high-pressure hoses with dedicated coupling females, but conventional LP gas containers There is a problem that a pressure regulator or a high-pressure hose having a POL connection for a gas container cannot be connected normally or in an emergency.

Coupling and POL are standards for joints for LP gas containers stipulated by JIS, and the coupling connection part of the LP gas container with a coupling is a male type, and the POL connection part of the conventional LP gas container is the female type, and the two are completely different.

Here, the techniques described in Patent Literature 1 and Patent Literature 2 are used by attaching a joint to the LP gas container, and cannot be used by connecting to a high-pressure hose. Further, the technique described in Patent Document 1 is used as a filling port of an LP gas container, and the technique described in Patent Document 2 is used when filling gas. In addition, the technology described in Patent Document 2 cannot be removed because it is used as a filling port of a container.

By the way, in recent years, generator units capable of generating electricity with LP gas have appeared, and the LP gas injection part extending from the generator unit is usually a male-type high-pressure hose in many cases. On the other hand, the LP gas container from which the LP gas is supplied may be a conventional LP gas container or an LP gas container with a coupling. Here, since it is not possible to connect a male high-pressure hose to an LP gas container with a coupling, it is necessary to prepare an LP gas container that matches the high-pressure hose of the generator unit. There is also the issue of increasing burdens.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and provides a POL-coupling female connection that enables easy connection of the POL connection of a high-pressure hose to the coupling connection of an LP gas container with a coupling. The purpose is to provide fittings.

A POL-coupling female connection joint according to the present invention comprises a body portion, a joint-side POL connection portion, and a joint-side coupling connection portion. The main body has a gas flow path that is open at both ends. The joint-side POL connection can connect a POL connection of a high-pressure hose to one end of the gas flow path. The joint-side coupling connection part can connect the coupling connection part of the LP gas container with a coupling to the other end of the gas flow path.

According to the present invention, the POL connecting portion of the high-pressure hose can be easily connected to the coupling connecting portion of the LP gas container with the coupling.

1 is a perspective view and a cross-sectional view of a POL-coupling female connection joint according to the present invention; FIG. Fig. 2A is a front view showing a state before the POL connection of a high-pressure hose is connected to the POL connection of a conventional LP gas container; Fig. 2B is a front view showing a state after the connection; . A front view (Fig. 3A) showing the state before connecting the POL connection portion of the high-pressure hose to the joint-side POL connection portion of the POL-coupling/female connection joint according to the present invention (Fig. 3A), and a front view showing the state after the connection. Figure 3B. FIG. 4 is a front view showing a state before the joint-side coupling connection portion of the POL-coupling/female connection joint according to the present invention is connected to the coupling connection portion of the LP gas container with the coupling. The front view (FIG. 5A) showing the state before connecting the joint-side coupling connection part of the POL-coupling/female connection joint according to the present invention to the coupling connection part of the LP gas container with coupling (FIG. 5A), and It is a front view (FIG. 5B) which shows a later state. FIG. 4 is a front view showing a state in which the joint-side coupling connection portion of the POL-coupling/female connection joint according to the present invention is connected to the coupling connection portion of the LP gas container with a coupling. A perspective view (Fig. 7A) showing a state in which the POL connection of a high-pressure hose is connected to the POL connection of a conventional LP gas container, and the joint-side coupling connection of the POL-coupling/female connection joint according to the present invention. is a perspective view (FIG. 7B) showing a state in which the is connected to the coupling connection portion of the LP gas container with a coupling.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment according to the present invention will be described below with reference to the accompanying drawings for better understanding of the present invention. It should be noted that the following embodiment is an example that embodies the present invention, and is not intended to limit the technical scope of the present invention.

A POL-coupling/female connection joint 1 according to the present invention includes a body portion 10, a joint-side POL connection portion 11, and a joint-side coupling connection portion 12, as shown in FIG.

The main body 10 has a gas channel 10c with both ends 10a and 10b open. As shown in FIGS. 2 to 6, the joint-side POL connection 11 can connect the POL connection 20 of the high-pressure hose 2 to one end 10a of the gas flow path 10c. The joint-side coupling connection portion 12 can connect the coupling connection portion 30 of the LP gas container 3 with a coupling to the other end portion 10b of the gas flow path 10c.

As a result, the POL connection portion 20 of the high-pressure hose 2 can be easily connected to the coupling connection portion 30 of the LP gas container 3 with a coupling via the POL-coupling/female connection joint 1 according to the present invention. That is, when the worker connects the high-pressure hose 2 to the supply source of LP gas, as shown in FIG. 2A, if the supply source is the conventional LP gas container 4, as shown in FIG. Since the POL connection 20 of the high-pressure hose 2 can be connected to the POL connection 40 of the gas container 4, the supply of LP gas proceeds smoothly.

On the other hand, as shown in FIG. 4, when the supply source is the LP gas container 3 with the coupling, the POL connection 20 of the high-pressure hose 2 can be connected to the coupling connection 30 of the LP gas container 3 with the coupling. do not have. Therefore, as shown in FIGS. 3A and 3B, the operator uses the POL-coupling/female connection joint 1 according to the present invention to connect the POL connection 20 of the high-pressure hose 2 to the joint-side POL connection 11. Then, as shown in FIGS. 4 to 6, the joint-side coupling connection portion 12 is connected to the coupling connection portion 30 of the LP gas container 3 with the coupling. As a result, regardless of whether the LP gas supply source is the conventional LP gas container 4 or the LP gas container 3 with a coupling, the operator can smoothly supply the LP gas without any trouble or burden. It is possible to proceed to

Here, the configuration of the joint-side POL connection portion 11 is not particularly limited, but for example, the joint-side POL connection portion 11 includes an opening portion 11a and a tapered surface 11b. The opening 11a is cylindrically opened at one end 10a of the gas flow path 10c, has a threaded portion on the inner surface of the cylinder, and can be screwed to the outer peripheral surface of the POL connection portion of the high-pressure hose. The tapered surface 11b is formed by decreasing the diameter toward the inside of the opening 11a, and can abut the tip of the POL connection portion of the high-pressure hose.

The configuration of the joint-side coupling connection portion 12 is not particularly limited. 12d, a plurality of balls 12e, and a fall prevention portion 12f. The O-ring 12a is provided on the outer peripheral surface of the other end 10b of the gas passage 10c, and the outer cylindrical portion 12b extends a predetermined distance from the outer peripheral surface of the other end 10b of the gas passage 10c. be The collar 12c is provided between the outer peripheral surface of the other end 10b of the gas flow path 10c and the inner peripheral surface of the outer cylindrical portion 12b, is slidably provided via an elastic member 12c1, and has a cylindrical shape. The sleeve 12d is mounted on the outer peripheral surface of the outer peripheral cylindrical portion 12b, is slidably provided via an elastic member 12d1, and has a cylindrical shape. A plurality of balls 12e are arranged near the distal ends of the outer cylindrical portion 12b, the collar 12c, and the sleeve 12d. The fall prevention portion 12f is provided at the tip of the outer cylindrical portion 12b and prevents the plurality of balls 12e from falling out.

As shown in FIGS. 3A and 3B, the POL-coupling/female connection joint 1 according to the present invention has the POL connection portion 20 of the high-pressure hose 2 fitted into the opening portion 11a of the joint-side POL connection portion 11. As shown in FIGS. 4 and 5A, the joint-side coupling connection portion 12 is attached to the coupling connection portion 30 of the LP gas container 3 with the coupling.

Then, as shown in FIG. 5B, the O-ring 12a is pressed against the inner peripheral surface of the tip portion 30a of the coupling connection portion 30, and the tip portion 30a of the coupling connection portion 30 pushes the collar 12c into the joint-side coupling connection portion 12. pushed inside the As a result, the plurality of balls 12e enter between the outer cylindrical portion 12b and the tip portion 30a of the coupling connection portion 30, and the sleeve 12d is pushed out of the joint-side coupling connection portion 12 to move forward of the outer cylindrical portion 12b. It is located on the side and prevents the balls 12e from returning.

As a result, when the operator fits the POL connection portion 20 of the high-pressure hose 2 into the opening portion 11a of the joint-side POL connection portion 11, the tapered surface 11b is opened after the POL connection portion 20 of the high-pressure hose 2 is properly inserted. It functions as a receiving seat to stop the insertion of the POL connection portion 20 of the high pressure hose 2 . Therefore, the operator can feel how the POL connection portion 20 of the high-pressure hose 2 is inserted.

Since the POL connection portion 20 of the high-pressure hose 2 and the opening portion 11a of the joint-side POL connection portion 11 are screwed together, the operator does not need to connect the POL connection portion 20 of the high-pressure hose 2 to the joint-side POL. It can be easily removed by screwing it into the opening 11a of the connecting part 11 or unscrewing it.

Further, when the operator attaches the joint-side coupling connection portion 12 to the coupling connection portion 30 of the LP gas container 3 with the coupling, the O-ring 12a secures the airtightness, and the plurality of balls 12e are arranged on the outer circumference of the cylinder. It enters between the portion 12 b and the tip portion 30 a of the coupling connection portion 30 and presses the tip portion 30 a of the coupling connection portion 30 against the inner peripheral surface of the tip portion 30 a of the coupling connection portion 30 . This improves the sealing performance between the joint-side coupling connection portion 12 and the coupling connection portion 30 of the LP gas container 3 with the coupling.

In addition, the sleeve 12d is pushed out of the joint-side coupling connection portion 12, and positioned on the front side surface of the outer cylindrical portion 12b to prevent the plurality of balls 12e from coming near the tip of the outer cylindrical portion 12b. . As a result, the plurality of balls 12e remain inserted between the outer cylindrical portion 12b and the distal end portion 30a of the coupling connecting portion 30, thereby maintaining the above-described airtightness.

Then, when the operator removes the joint-side coupling connection portion 12 from the coupling connection portion 30 of the LP gas container 3 with the coupling, the operator returns the sleeve 12d to the inside of the joint-side coupling connection portion 12, so that , the plurality of balls 12e escape from between the outer cylindrical portion 12b and the distal end portion 30a of the coupling connecting portion 30, and return to the vicinity of the distal ends of the outer cylindrical portion 12b, the collar 12c, and the sleeve 12d. is hooked on the plurality of balls 12e, and the sleeve 12d returns to the inside of the coupling connecting portion 12 on the joint side. Then, the airtightness between the joint-side coupling connection portion 12 and the coupling connection portion 30 of the LP gas container 3 with the coupling is released. In this state, the operator pulls out the joint-side coupling connection portion 12 from the coupling connection portion 30 of the LP gas container 3 with the coupling, whereby the collar 12c is pushed out of the joint-side coupling connection portion 12. Then, the operator can easily remove the joint-side coupling connection portion 12 from the coupling connection portion 30 of the LP gas container 3 with the coupling.

Now, to describe an example, a POL-coupling/female connection joint 1 shown in FIG. 1 was manufactured. As shown in FIG. 7A, in general, the POL connection 20 of the high-pressure hose 2 can be connected to the POL connection 40 of the conventional LP gas container 4. Connection to the coupling connection 30 is not possible. Therefore, the POL connection portion 20 of the high-pressure hose 2 is connected to the joint-side POL connection portion 11 of the POL-coupling/female connection joint 1, and as shown in FIG. The coupling connection portion 12 is connected to the coupling connection portion 30 of the LP gas container 3 with the coupling. As a result, the operator can easily connect the POL connection portion 20 of the high-pressure hose 2 to the coupling connection portion 30 of the LP gas container 3 with a coupling using the POL-coupling/female connection joint 1. rice field.

The structure of the main body 10 is not particularly limited. For example, as shown in FIG. 1, the main body 10 may be L-shaped, linear, or bent at an arbitrary angle. . Thus, by making the gas flow path 10c L-shaped or straight, it is possible to improve the ease of handling for the operator.

Further, the body portion 10 is divided into, for example, a first divided portion 10d having one end portion 10a and a second divided portion 10e having the other end portion 10b. The end portion 10d1 and the split end portion 10e1 of the second split portion 10e are each provided with a threaded portion so that the threaded portion of the first split portion 10d and the threaded portion of the second split portion 10e can be screwed together. , and an O-ring 10f is provided between the split end portion 10d1 of the first split portion 10d and the split end portion 10e1 of the second split portion 10e (on the main body portion side). In FIG. 1, a split end 10d1 of the first split portion 10d is threaded, and a split end 10e1 of the second split portion 10e is threaded.

As a result, when the first divided portion 10d and the second divided portion 10e are screwed together, the O-ring 10f engages the divided end portion 10d1 of the first divided portion 10d and the divided end portion 10e1 of the second divided portion 10e. By intervening between them, it is possible to secure the airtightness between the first divided portion 10d and the second divided portion 10e and reliably prevent gas leakage. Further, by dividing the main body portion 10 into a first divided portion 10d having one end portion 10a and a second divided portion 10e having the other end portion 10b, combination with other divided portions is possible. For example, by combining the first divided portion 10d, the second divided portion 10e, and other divided portions, the configuration of the main body portion 10 can be L-shaped or linear.

Further, although there is no particular limitation on the materials of the body portion 10, the joint-side POL connection portion 11, and the joint-side coupling connection portion 12, for example, brass (for example, free-cutting brass round bar C3604B or brass bar for forging) C3771B), iron, stainless steel, and the like. The materials of the collar 12c and the sleeve 12d are not particularly limited, but examples thereof include synthetic resins and soft metals.

The materials of the O-ring 12a on the connecting portion side and the O-ring 10f on the main body side are not particularly limited, but examples include natural rubber, isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber ( SBR), chloroprene rubber (CR), nitrile rubber (NBR), butyl rubber, silicon rubber, acrylic rubber, urethane rubber, fluorine rubber, ethylene-propylene-diene rubber (EPDM), and the like. Examples of nitrile rubber include rubber having a Shore hardness of 90Hs defined as JIS Class 1B.

The dimensions of the O-ring 12a and the O-ring 10f are not particularly limited, but may be 1.9 mm in thickness and 5.8 mm in inner diameter as defined in JIS P6.

Although there is no particular limitation on the material of the drop-off preventing portion 12f, examples thereof include brass, iron, and stainless steel. Also, the shape of the drop-off preventing portion 12f is not particularly limited, but may be, for example, a circular ring or a polygonal ring.

Also, the material of the ball 12e is not particularly limited, but examples include brass, iron, stainless steel SUS440C, and the like. The size of the ball 12e is not particularly limited, but for example, a ball with a diameter of 2.5 mm and grade 28 defined by JIS can be used. The number of balls 12e is not limited, but may be, for example, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc. can be mentioned.

Although there is no particular limitation on the structure of the elastic member 12c1 and the elastic member 12d1, for example, a spring, a compression coil spring made of stainless steel wire SUS304-WPB, or the like can be used.

As described above, the use of the POL-coupling female connection joint according to the present invention makes it possible to easily connect the POL connection portion of the high-pressure hose to the coupling connection portion of the LP gas container with the coupling.

1 POL-coupling/female connection joint 10 main body 10c gas flow path 11 joint-side POL connection 12 joint-side coupling connection 12a O-ring 12b outer cylindrical portion 12c collar 12d sleeve 12e ball 12f fall prevention portion 2 high-pressure hose 3 LP gas container with coupling 4 Conventional LP gas container

Claims (3)

a main body having a gas flow path with both ends open;
a joint-side POL connection to which a POL connection of a high-pressure hose can be connected to one end of the gas flow path;
a joint-side coupling connection portion capable of connecting a coupling connection portion of an LP gas container with a coupling to the other end of the gas flow path;
POL-coupling female connection fitting. The joint-side POL connection portion is
an opening that is cylindrically opened at one end of the gas flow path, has a threaded portion provided on the inner surface of the cylinder, and can be screwed to the outer peripheral surface of the POL connection portion of the high-pressure hose;
a tapered surface that is formed by decreasing the diameter toward the inside of the opening and that can be contacted by the tip of the POL connection portion of the high-pressure hose;
with
The joint-side coupling connection portion is
an O-ring provided on the outer peripheral surface of the other end of the gas channel;
an outer cylindrical portion extending a predetermined distance from the outer peripheral surface of the other end of the gas channel;
a cylindrical collar provided between the outer peripheral surface of the other end of the gas channel and the inner peripheral surface of the outer cylindrical portion and slidably provided via an elastic member;
a cylindrical sleeve mounted on the outer peripheral surface of the outer cylindrical portion and slidably provided via an elastic member;
a plurality of balls arranged near distal ends of the outer cylindrical portion, the collar, and the sleeve;
a fall-off prevention portion provided at the tip of the outer cylindrical portion to prevent the plurality of balls from falling off;
with
In this POL-coupling/female connection joint, the POL connection portion of the high-pressure hose is fitted into the opening of the POL connection portion on the joint side, and the coupling-side coupling connection portion is the coupling connection portion of the LP gas container with the coupling. When it is mounted on the The sleeve enters between the outer cylindrical portion and the tip portion of the coupling connection portion, and the sleeve is pushed out to be positioned on the front side surface of the outer cylindrical portion and prevent the plurality of balls from returning.
The POL-coupling female connection joint according to claim 1. The body portion is divided into a first divided portion having the one end and a second divided portion having the other end, and the divided end of the first divided portion and the second divided portion A threaded portion is provided at each of the divided ends of the two divided portions, and the threaded portion of the first divided portion and the threaded portion of the second divided portion can be screwed together, and the first divided portion providing an O-ring between the split end of the section and the split end of the second split section;
The POL-coupling female connection joint according to claim 2.