JP3122378B2 - Gas tap with inspection hole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stopper having an inspection hole used for inspection of gas leakage and the like.

[0002]

2. Description of the Related Art As a conventional gas stopper of this type, for example, the one described in Japanese Utility Model Publication No. 6-7224 is known. This gas stopper has an inspection hole opened on one side outer surface of the stopper body.For example, in a state where a pressure gauge is connected to the inspection hole, the gas stopper is opened or closed and left for a predetermined time. Thereby, it is possible to inspect whether there is a gas leak in the pipe from the main cock to the gas appliance.

Usually, in the above-mentioned gas stopper, a stopper is screwed and fixed to an opening of the inspection hole in order to surely prevent gas from leaking from the inspection hole. Therefore, if it is removed at the time of inspection, it may be lost. Therefore, one end of a band for preventing loss is connected to the stopper and the other end of the band is fitted to the outer periphery of the stopper body to prevent the stopper from being lost.

In recent gas plugs with inspection holes,
A flexible gas pipe is often connected to a connection part on the main stopper side, that is, a connection part on the inflow side. When a flexible gas pipe is connected, the position of the gas stopper cannot be fixed. Therefore, the gas plug is fixed to the appliance by directly connecting the outlet side connection portion of the gas stopper to the inflow port (gas pipe on the gas appliance side) of the gas appliance.

[0005] In such a gas plug, if the flexible gas pipe connected to the inflow side connection part is accidentally removed when replacing the gas appliance, a large amount of gas leaks from the flexible gas pipe. Therefore, for example, a display ring stating the precautionary statement of "remove on this side" is attached to the outflow side connection portion of the gas plug in advance, so that the gas appliance and the gas plug are securely removed. I have. Of course, at the time of removal, the gas stopper is closed in advance.

[0006]

In a conventional gas stopper with an inspection hole which is directly connected to a gas appliance, a band for losing the stopper and a display ring for indicating a detached portion are attached. In addition, the band and the display ring have to be manufactured separately while the mounting work is troublesome, and there is a problem that the manufacturing cost increases accordingly. In addition, there is a problem that the display ring is rotated from a predetermined position, and it is difficult to see the notice.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has an inflow-side connecting portion to which a gas pipe on the main plug side is connected to one end of a plug body, and a gas appliance-side portion at the other end. Outlet connection portions to which the gas pipes are connected are provided, and gas passages of the inflow side connection portion and the outflow side connection portion are connected to each other at an intermediate portion between the inflow side connection portion and the outflow side connection portion.
A gas containing an inspection hole, in which a stopper housing portion containing a plug body to be shut off is provided, an inspection hole opening on an outer surface thereof is formed in the stopper housing portion, and a stopper is detachably attached to the opening of the inspection hole. In the stopper, the display ring portion of the display ring having a display ring portion on which a warning sign is written on an outer peripheral surface and a band having a base end integrally provided with the display ring portion is provided on the outer periphery of the outflow side connection portion. The display ring is prevented from rotating by fitting and connecting the tip of the band to the stopper.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a gas stopper 1 according to the present invention, FIG. 2 is a front view thereof, and FIG.
FIG. 4 is a plan view showing a display ring with a stopper stopper prevention band.

In this gas plug 1, an inflow-side connection joint (inflow-side connection portion) 21 is screwed into one end of the plug body 2 where an inflow port (gas passage) 2a opens, and an outflow port (gas passage).
An outflow-side connection joint (outflow-side connection portion) 22 is rotatably provided at the other end where the opening 2b opens, and a plug storage portion 23 is provided at an intermediate portion.
Is provided. A flexible gas pipe (not shown) on the main plug side is connected to the inflow side connection joint 21, and a connection pipe (gas pipe) of a gas appliance (not shown) is directly connected to the outflow side joint 22. Further, a plug storage hole 2c is formed inside the plug storage portion 23, and the plug 3 having the through hole 3a is rotatably stored in the plug storage hole 2c. By rotating the plug 3 with the handle 4, the open state in which the inflow port 2a and the outflow port 2b communicate with each other through the through hole 3a, and the gap between the inflow port 2a and the outflow port 2b are plugged. The closed state interrupted by the body 3 (FIG. 3
State).

On the outer surface of one side of the stopper housing 23, a protrusion 2 is provided.
4 is formed, and one end of an inspection hole 25 is opened at the tip end surface of the protruding portion 24. The other end of the inspection hole 25 is opened on the inner peripheral surface of the plug housing hole 2c, and communicates with both the inlet 2a and the outlet 2b according to the rotational position of the plug 3, Is switched to a state in which it is communicated to one of them, a state in which the other is shut off, and a state in which both are shut off. A stopper 5 for closing the inspection hole 25 is screwed and fixed to an opening outside the inspection hole 25. The above configuration is the same as the conventional gas stopper with inspection hole.

Further, in the gas stopper 1, a display ring 6 with a stopper loss prevention band is used to prevent the stopper 5 from being lost. The display ring 6 is integrally formed of resin as a whole. As shown in FIG. 4, a thin display ring portion 61 having a predetermined width and a display ring portion 61 are provided.
A band-shaped band portion 62 extending radially outward from the outer periphery of one side portion, and a retaining ring portion 63 provided at a tip end of the band portion 62.

The display ring portion 61 is connected to the outflow side connection joint 22.
Is loosely fitted to the cylindrical outer peripheral surface of the above, and on the outer peripheral surface, a warning indication 61a of "remove on this side" is written. Further, the band-shaped band portion 62 easily bends in the axial direction of the display ring portion 61 and has a predetermined strength in the tangential direction by changing the thickness direction of the band plate to the display ring 6.
It is formed so as to face one axial direction and the tangential direction in the width direction. Further, the retaining ring 63 is connected to the stopper 5. In this case, an annular mounting groove 51 is formed in the stopper 5, and the retaining ring 63 is irremovably connected to the stopper 5 by being fitted into the mounting groove 51.

In the gas stopper 20 with an inspection hole, the stopper 5 is connected to the stopper body 2 by the display ring 6, so that the stopper 5 can be prevented from being lost, and the display ring portion 61 can be prevented. Since attention notice 61a is described in
When exchanging the gas appliance, the gas appliance can be reliably removed from the gas stopper 1.

In addition, the display ring 61 and the band 62
Since the entire retaining ring 63 is integrally formed, the number of parts can be reduced as compared with a case where the display ring and the band are separately manufactured, and the manufacturing cost can be reduced accordingly. Further, since the display ring portion 61 is restrained by the band portion 62 fixed to the stopper 5 and is prevented from rotating, the caution display 61a can always be directed in a predetermined direction, in this embodiment, upward. . Therefore, it is possible to keep the caution display 61a in a state where it is always easy to confirm.

Note that the present invention is not limited to the above-described embodiment, and can be appropriately modified. For example, in the above embodiment, the retaining ring 63 is fitted in the annular mounting groove 51 formed in the stopper 5, but the retaining ring 63 is bonded and fixed to the outer periphery of the stopper 5. It may be.

[0016]

As described above, according to the present invention, the display ring and the stopper stopper loss prevention band, which are separately provided in the related art, are integrated, so that the number of parts can be reduced, and the manufacturing is made accordingly. Since the cost can be reduced and the display ring can be restrained by the band connected to the stopper, the rotation of the display ring can be prevented, and the caution display always faces in a certain direction. Thus, an effect of being able to maintain a state that is easy to confirm is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view, partially cut away, of an embodiment of the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a plan view showing a display ring with a stopper loss prevention band according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas plug with inspection hole 2 Plug body 2a Inlet (gas passage) 2b Outlet (gas passage) 3 Plug 5 Stopcock 6 Display ring 21 Inflow side connection part 22 Outflow side connection part 23 Plug storage part 25 Inspection hole 61 Display ring part 62 Band part 63 Retaining ring part

Claims (1)

(57) [Claims] 1. An inflow-side connecting portion to which a gas pipe on the main plug side is connected at one end of a plug main body, and an outflow-side connecting portion to which a gas pipe on a gas appliance side is connected at the other end portion.
An intermediate portion between the inflow-side connection portion and the outflow-side connection portion is provided with a plug storage portion in which a plug body for communicating and blocking the gas passage between the inflow-side connection portion and the outflow-side connection portion is provided. The inspection ring which has an inspection hole opened on the outer surface thereof, and a stopper is detachably attached to the opening of the inspection hole. the proximal end to the indication ring portion is fitted to the display ring portion of the indicator ring and a band provided integrally on the outer circumference of the outflow-side connecting portion, connecting the distal end of the band to the stop plug To prevent the above display ring from rotating.
A gas stopper with an inspection hole.