JP2019039457A - Wrong operation prevention tool for gas cock, and gas cock mounted therewith - Google Patents

Abstract

To prevent inconvenience that an opened gas cock is closed by mischief or wrong operation, and reduce the number of components to enable installation in a compact manner without obstruction or interference around a pipe, in a wrong operation prevention tool comprising a pipe connection cylinder part (21) and an operation handle (20) from which a lever part (25) projects, wherein when a gas cock (2) is in an open state, the lever part (25) is mounted to the gas cock positioned along the pipe connection cylinder part (21).SOLUTION: A locking part (10) lockable to a lever part (25), and a leg part (11) lockable to at least a part of an outer peripheral surface of a pipe connection cylinder part (21) in an externally fitted manner are provided in one prevention tool body (1). Only when a gas flow passage is in an open state, the locking part (10) and the leg part (11) are configured to be respectively lockable to the lever part (25) and the pipe connection cylinder part (21) simultaneously.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas stopper misoperation prevention tool, and more particularly to a gas stopper erroneous operation prevention tool that is attached to an operation handle of a gas stopper to fix the operation handle in a rotation-blocking state, and a gas stopper equipped with the same.

In general, as shown in FIG. 8, the gas meter (M) installed outdoors has an intake pipe (3) set up from the ground, and the gas after passing through the gas meter (M) is piped indoors. It is connected to the feed pipe (4) for feeding into (41) via a gas inflow pipe (30) and a gas outflow pipe (40). A pipe is connected between 3) and the gas inlet pipe (30).
As shown in FIG. 9, this type of gas plug (2) includes a gas plug main body (24), a spiral (26) and a spiral (26) that are rotatably accommodated in the gas plug main body (24). And an operation handle (20) for rotating.
On the upstream side (side connected to the inlet pipe (3)) and downstream side (side connected to the gas inlet pipe (30)) of the gas plug body (24), respectively, the inlet pipe (3) and gas inlet Pipe connection tube portions (21) and (22) in which female screws (21a) and (22a) that can be screwed into male screw portions (31) and (32) formed at the tip of the pipe (30) are continuously provided. ing.
The operation handle (20) has a shape in which a lever portion (25) protrudes in one direction from the circumferential surface of a shallow cylindrical body, and the lever (25) is rotated by 90 degrees (26). ) Can also be rotated 90 degrees to open and close the gas plug (2).

  The gas stopper (2) as described above is maintained in an open state unless the use of gas indoors is stopped for a long time, and the lever portion (25) of the operation handle (20) is always in FIG. As shown in FIG. 9, it is directed toward the lead-in pipe (3) on the upstream side of the gas meter (M). If this lever part (25) is rotated by mischief or the like and the gas stopper (2) is closed, the gas equipment in the room cannot be used. In this type of gas meter, once closed, the gas meter (M) cannot be restored even if the lever (25) is returned to the original open state. Since the work for returning the gas meter (M) has to be performed, it is complicated and troublesome for the gas user.

  In view of this, there is a gas plug cover disclosed in Patent Document 1 for preventing erroneous operation of the operation handle (20) of the gas plug (2). This is a gas stopper cover to be attached to an indoor-installed gas stopper. By covering the cover from the operating knob to the gas stopper body in a close-tight state, the operation knob is fixed in a rotation-prevented state. Is done. However, since this is a structure in which a plurality of engaging portions are engaged in the gap between the operation knob and the gas plug main body, the operation handle (20) and the gas handle (2) shown in FIG. In the structure in which no gap is formed between the gas plug main body (24), the engaging portion cannot be engaged, and the above-described cover portion cannot be attached in a retaining state.

Moreover, in this conventional gas plug cover, since there are a plurality of engaging portions in an independent state, when the engaging portions are engaged with each other at predetermined positions, it takes time to remove them.
In the gas stopper (2) for the gas meter, it is necessary to be able to immediately close the stopper in an emergency, and therefore it is not possible to employ a cover that is troublesome to remove.
In that respect, in the valve fixing jig disclosed in Patent Document 2, since the fixing tool can be freely opened, the fixing tool can be attached to and detached from the piping, and can be immediately removed and plugged in an emergency.

JP 2008-232382 A JP-A-6-213368

  However, when the fixing jig disclosed in Patent Document 2 is applied to the gas stopper (2) for the gas meter, the fixing tool is engaged with the drawing pipe (3) and the gas inlet pipe (30), and the holding tool is operated. Since it becomes a structure engaged with a handle | steering-wheel (20), it will enlarge in whole. Moreover, it is composed of many parts such as two fixing tools and a holding tool, a wire connecting them, and the assembly is complicated. Moreover, since it becomes an obstacle around piping and is installed outdoors, there is a problem that a passerby gets caught and is damaged, and in some cases, is injured.

  The present invention has been invented in view of the above problems, and includes a “pipe connecting cylinder portion connectable to piping and an operation handle for opening and closing a gas flow path, and the operation handle is rotated. A gas is set so that the lever part for operation protrudes and the protruding direction of the lever part coincides with the flow path direction of the pipe connecting cylinder part when the gas stopper is in an open state. In the “Accidental operation prevention tool to be attached to the stopper”, the gas stopper in the open state is prevented from being tampered with or accidentally closed, and the number of components is reduced, so that it is small and does not obstruct or disturb the pipe. It is an object of the present invention to provide a tool for preventing erroneous operation of a gas stopper that can be performed.

In order to achieve the above object, the present invention provides the following: “a locking portion that can be locked to the lever portion and a leg portion that can be locked to at least a part of the outer peripheral surface of the pipe connecting tube portion in an externally fitted state. Is provided in one preventer body,
Only in the open state of the gas flow path, the locking part is set to the lever part and the leg part is set to the pipe connecting cylinder part so as to be locked at the same time.

The above means operates as follows.
When the gas flow path of the gas plug is in the open state, the lever portion is set so as to protrude along the flow path direction of the pipe connecting cylinder portion. Can be attached to the gas stopper in such a manner that the leg portions are simultaneously locked to the pipe connecting cylinder portion. In the mounted state of the preventer main body, the lever portion is fixed in a posture positioned along the pipe connection tube portion, and cannot be rotated to a position deviated from the pipe connection tube portion. Therefore, it is possible to prevent the inconvenience that the gas stopper is maintained in an open state and the lever portion is inadvertently rotated and closed.

In the gas stopper misoperation prevention tool, preferably, the locking portion is a lever insertion hole through which the lever portion can be inserted.
The lever insertion hole is provided so as to penetrate the main body of the prevention tool, and since the lever part is inserted in the lever insertion hole, it can be easily understood from its appearance that the lever part cannot be rotated. Can be suppressed. When the gas stopper is in the open state, the lever portion is inserted into the lever insertion hole of the prevention device main body, and at the same time, the leg portion is engaged with at least a part of the pipe connection tube portion, and the prevention device main body is Attach to the gas stopper. By inserting the lever portion into the lever insertion hole, the prevention tool main body is securely attached to the gas stopper, and the gas stopper can be more reliably maintained in an open state without being accidentally dropped off.

In the gas stopper erroneous operation prevention device, preferably, “a screw hole that opens from the top surface of the prevention device body to the lever insertion hole, and a lever insertion hole from the top surface that is engaged with the screw hole. Bolts that can advance into are provided.
Screw hole provided at the top of the prevention tool body with the lever part inserted through the lever insertion hole and the leg part locked to the pipe connection cylinder part and the prevention tool body attached to the gas stopper When the bolt is screwed to the end, the end of the bolt advances toward the inside of the lever insertion hole with the tightening, and presses the upper surface of the lever portion inserted through the lever insertion hole. Thereby, attachment to the gas stopper of a prevention tool main part becomes still more reliable, and it does not slip | deviate or remove | inadvertently. Moreover, since the prevention tool main body does not come off unless the bolt is loosened and intentionally removed, it is possible to more reliably prevent misoperation such as mischief.

In the above-described gas stopper misoperation prevention tool, preferably, the above-mentioned main body of the prevention tool is provided with a belt-like body that can be wound around the pipe connection cylinder portion,
The band-like body is set so as to be fixable in a state where the outer periphery of the pipe connecting cylinder portion is tightened.
In a state where the main body of the protective device is attached to the gas stopper, the belt-like body is wound around the pipe connecting cylinder portion and is fastened and fixed. Thereby, the attachment to the gas stopper of a prevention tool main body can be made more reliable. Since the preventer main body cannot be easily removed unless the strip is intentionally cut using a tool, erroneous operation such as mischief can be prevented more reliably.

In the gas stopper erroneous operation prevention device, preferably, “the locking portion is a male screw member screwed into a screw hole provided in the prevention device main body,
The male screw from the screw hole so that the head portion of the male screw member presses the lower surface of the lever portion in a state where the leg portion is locked to the pipe connecting tube portion of the gas stopper in the open state. The projecting length of the member can be set.
In this case, the protruding portion of the male screw member protrudes from the screw hole so that the leg portion is locked to the pipe connection tube portion of the gas stopper that is opened, and the head of the male screw member presses the lower surface of the lever portion. Adjust the height. Even if an attempt is made to rotate the lever part in a state where the head part of the male screw member is pressed against the lower surface of the lever part, the turning operation of the lever part is prevented by the frictional force by the head part of the male screw member. Further, since the male screw member is located on the back side of the lever portion, the prevention tool main body cannot be removed unless it is a person who knows the structure.

In the gas stopper misoperation prevention tool, preferably, “the outer peripheral surface of the pipe connecting tube portion is formed in a substantially hexagonal shape, and the leg portion is formed in a shape corresponding to a part of the hexagonal shape”. That is.
The pipe connecting cylinder portion has a generally hexagonal shape in order to accommodate a tool. By making the shape of the leg part a shape corresponding to a part of the hexagon, the leg part is restricted in its rotation by the pipe connecting tube part and can be locked in a detent state.

  In the gas stopper, which is equipped with any one of the above-mentioned gas stoppers for preventing erroneous operation, it is easy to know that the lever part cannot be rotated from its appearance, so that it is difficult to be tampered with, and the open state It is possible to provide a gas stopper for a gas meter that is not inadvertently closed.

  As described above, according to the gas stopper misoperation prevention device according to the present invention, the prevention device main body is a space between the lever portion of the gas stopper in the open state and the pipe connection cylinder portion positioned along the lever portion. It can be downsized with a small number of components and a simple structure, and even if it is attached to a gas stopper, it can be an obstacle or hindrance around the piping. Absent.

It is a perspective view of the misoperation prevention tool of the gas stopper of the 1st embodiment of the present invention. It is a perspective view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of the 1st embodiment of this invention. It is a perspective view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of the 2nd embodiment of this invention. It is a perspective view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of 3rd Embodiment of this invention. It is a front view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of the 4th embodiment of this invention. It is a front view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of the 5th embodiment of this invention. It is a front view which shows the state which mounted | wore the gas stopper with the misoperation prevention tool of the gas stopper of the 6th embodiment of this invention. It is explanatory drawing of the conventional gas meter and the gas stopper for gas meters. It is sectional drawing which shows the state by which the gas stopper for conventional gas meters was connected to piping.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of a gas stopper misoperation prevention device according to the first embodiment of the present invention, and FIG. 2 is a diagram showing a gas stopper for a gas meter mounted with the gas stopper misoperation prevention device shown in FIG. It is a perspective view which shows a state.

  The gas stopper (2) employed in this embodiment has the same configuration as the conventional gas stopper shown in FIG. 9, and pipe connections formed in a substantially hexagonal cylindrical shape on both sides of the gas stopper body (24). The cylinder part (21) (22) is provided, and the operation that can open and close the gas flow path from the upstream pipe connection cylinder part (21) to the downstream pipe connection cylinder part (22) A handle (20) is rotatably attached to the open end of the gas plug body (24).

  The operation handle (20) is provided with a lever portion (25) protruding in a direction perpendicular to the rotation axis, and the operation handle (25) is rotated by supporting the lever portion (25). It can be made. Further, in the open state of the gas stopper in which the gas flow path is in communication, the lever portion (25) is set so as to be positioned along the upstream pipe connecting tube portion (21).

FIG. 1 is a perspective view as seen from the back side of the erroneous operation prevention device of the first embodiment, and a leg portion (11) opened downward in the drawing on a substantially rectangular prevention device main body (1) made of resin. ) And a lever insertion hole (10) through which the lever portion (25) can be inserted, which corresponds to a locking portion as an invention specific matter, passes therethrough.
The leg portion (11) is formed in a shape in which a hexagonal tubular portion that fits in a substantially tightly fitted state on the outer peripheral surface of the hexagonal tubular connection tube portion (21) is opened downward in the drawing, A cylindrical portion (12) having a smaller diameter than the hexagonal circumscribed circle constituting the hexagonal cylindrical portion is extended on the surface side.

In the erroneous operation preventing tool of the first embodiment, the distance between the lever insertion hole (10) and the leg (11) in the preventing tool main body (1) is the same as that in the open gas plug (2). The distance between the lever part (25) and the pipe connecting cylinder part (21) is approximately the same, and as shown in FIG. 2, the lever part (25) of the gas plug (2) with the gas flow path open is provided. At the same time that the lever insertion hole (10) is inserted from the back side, the pipe connection cylinder part (21) is fitted into the leg part (11) made of a hexagonal cylindrical part. The state in which the open end of the pipe connection tube portion (21) is in contact with the stepped portion (12a) of the leg portion (11) and the cylindrical portion (12) is connected to the gas stopper (2) of the preventer main body (1). It is in a state of complete installation.
In this case, the lever portion (25) is inserted into the lever insertion hole (10) provided in one preventer main body (1), and the pipe connecting tube portion (21) is substantially closely fitted to the leg portion (11). Since the mounting state is fitted into the state, the rotation of the lever portion (25) is prevented, and the gas plug (2) is maintained in the open state without being accidentally closed by mischief or the like.

The second embodiment shown in FIG. 3 corresponds to the upper two inclined surfaces of the hexagonal tubular connecting pipe part (21) on the lower surface of the substantially rectangular prevention body (1). A leg portion (11) having a high mountain shape at the center is formed, and a lever insertion hole (10) is formed through the upper portion in the drawing.
Note that a screw hole (13a) is formed through the top surface (1a) of the preventer main body (1) so as to open into the lever insertion hole (10).

The lever portion (25) of the gas plug (2) in the open state is inserted into the lever insertion hole (10), and at the same time, the mountain-shaped leg portion (11) on the lower surface is connected to the hexagonal pipe connection tube portion. After locking so as to straddle both slopes of (21), the butterfly bolt (13) is screwed into the screw hole (13a). As the butterfly bolt (13) is tightened, the end thereof advances into the lever insertion hole (10) and presses the upper surface of the lever portion (25) in the lever insertion hole (10). As a result, the lever part (25) is fixed in the lever insertion hole (10), and the preventer main body (1) is not accidentally displaced from the gas stopper (2) or dropped off, and it is consciously As long as the butterfly bolt (13) is not removed, the state in which the prevention tool main body (1) is attached is maintained, and erroneous operation such as tampering with the lever portion (25) can be prevented.
In this case, when the gas stopper (2) is kept closed, the preventer body (1) can be held on the lever (25) by tightening the butterfly bolt (13). Since it is possible, the main body (1) will not be lost.

FIG. 4 shows a state in which the main body (1) of the third embodiment is attached to the gas stopper (2), which is the preventive device of the second embodiment described above. In the main body (1), the upper region where the lever insertion hole (10) is formed protrudes forward so that the entire region of the lever portion (25) can be accommodated in the lever insertion hole (10). Also in this embodiment, the screw hole (13a) is formed in the top surface (1a) of the prevention device body (1) so as to open to the lever insertion hole (10), and the butterfly bolt (13) is tightened. Thus, the upper surface of the lever portion (25) in the lever insertion hole (10) is pressed and fixed by the end portion of the butterfly bolt (13).
In this embodiment, by attaching the prevention device main body (1), the entire lever portion (25) is not exposed to the outside, so that tampering and misoperation with respect to the lever portion (25) are further ensured. Can be prevented.

  FIG. 5 shows a state in which the main body (1) of the fourth embodiment is attached to the gas stopper (2), as seen from the open end side of the pipe connection tube portion (21). FIG. The prevention tool main body (1) is a substantially rectangular metal plate, and a lever insertion hole (10) is formed in the upper region thereof, and the leg (11) is a hexagonal tubular pipe connection tube (21). The center is formed in a high mountain shape so as to correspond to the two upper slopes of the outer peripheral surface. Then, from both ends of the leg portion (11), both side support portions (11a) (11a) extend downward in the drawing, and further, pipe connection tube portions are provided at the lower end portions of the both side support portions (11a) (11a). A support plate (14) that supports (21) from below is configured to be screwed with a butterfly bolt (15).

  On the upper surface of the center of the support plate (14), a valley-shaped part (14a) with a lower center is formed so as to correspond to the two slopes at the lower part of the outer peripheral surface of the hexagonal tubular connecting pipe part (21). When the butterfly bolt (15) is tightened via the support plate (14), the outer peripheral surface of the pipe connecting tube portion (21) is connected to the leg portion (11), the both side support portions (11a), and the support plate (14). It becomes an aspect surrounded by the valley-shaped part (14a), and it is possible to prevent the prevention tool main body (1) from being displaced or dropped from the gas stopper (2).

FIG. 6 is a front view showing a state in which the main body (1) of the fifth embodiment is mounted on the gas stopper (2), and the lever main body (1) is inserted into the lever. The hole (10) and the mountain-shaped leg portion (11) corresponding to the upper two inclined surfaces of the hexagonal tubular connecting pipe portion (21) are provided, and the hexagonal tubular shape is formed on the surface side thereof. An arcuate portion (19) having a smaller diameter than the hexagonal circumscribed circle constituting the portion is extended. And the binding band (16) for winding around the pipe connection cylinder part (21) so that it may penetrate the prevention tool main body (1) is comprised.
In this embodiment, the lever part (25) of the gas plug (2) in the open state is inserted into the lever insertion hole (10), and at the same time, the leg part (11) is connected to the pipe connection cylinder part (21). The cable tie (16) is wound around the pipe connection cylinder part (21) with the open end of the pipe connection cylinder part (21) in contact with the back surface of the arcuate part (19). While turning, tighten firmly by pulling in the direction of the arrow. The body (1) of the protector is securely fixed to the pipe connection cylinder (21) with the cable tie (16) and can be removed unless the cable tie (16) is intentionally cut using scissors. Absent. Therefore, mischief and erroneous operation on the lever portion (25) can be further prevented.

  FIG. 7 is a front view showing a state in which the main body (1) of the sixth embodiment is attached to the gas stopper (2), and the main body (1) is in the open state. It is a flat body that is interposed between the lever part (25) of the gas plug (2) and the pipe connection cylinder part (21), and the pipe connection cylinder part (21) side surface has a hexagonal pipe connection cylinder. A mountain-like leg portion (11) corresponding to the upper two slopes of the portion (21) is formed, and a screw hole (17) and a screw hole (17) are screwed to the surface on the lever portion (25) side. A male screw member (18) corresponding to a locking portion as a specific matter is provided.

In this case, the leg portion (11) of the main body (1) of the prevention device is locked so as to straddle the pipe connection tube portion (21) of the gas plug (2) in the open state, and screwed into the screw hole (17). The protrusion height from the screw hole (17) of the combined male screw member (18) is adjusted, and the lower surface of the lever portion (25) is pressed upward by the head portion (18a) of the male screw member (18).
The head portion (18a) of the male screw member (18) presses the lower surface of the lever portion (25), so that the space between the lower surface of the lever portion (25) and the head portion (18a) of the male screw member (18) is reached. A frictional force is generated, and the rotation of the lever portion (25) is suppressed.
Further, the male screw member (18) located on the back side of the lever portion (25) is not generally known, and cannot be easily removed even if the prevention device main body (1) is unnecessarily removed.

  The erroneous operation preventing tool in each of the above embodiments is to be attached to the pipe connecting tube portion (21) and the lever portion (25), and thus is downsized compared to that to be attached to the entire operation handle (20). In addition to being able to have only one prevention device body (1), or the prevention device body (1) and a binding band (16) for fixing it and a male screw member (18), The number of parts is small, the structure is simple, and it is easy to attach to the gas stopper (2). In addition, after installation, there will be no obstacles or obstructions around the piping, and even if it is attached to the gas meter gas plug (2) installed outdoors, the passerby will catch it, preventing the body (1) There is no inconvenience that people get damaged or, on the contrary, people get hurt.

  In addition, by attaching the misoperation prevention tool of each embodiment, it can be understood that the gas stopper (2) cannot rotate the lever portion (25) from its appearance, so that it can be easily tampered with. It becomes difficult to be done. Therefore, the inconvenience of inadvertently closing the gas plug in the open state can be prevented, and a gas meter for the gas meter that is easy to use can be provided.

(1) ...
(10) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lever insertion hole (locking part)
(11) ... Leg
(2) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Gas stopper
(20) ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Operation handle
(21) (22) ... Piping connection cylinder
(24) ... Gas stopper body
(25) ... Lever

Claims (7)

A pipe connecting cylinder portion connectable to the pipe; and an operation handle for opening and closing the gas flow path. The operation handle has a lever portion for projecting the operation handle, and a gas plug In the erroneous operation prevention tool to be attached to the gas stopper set so that the protruding direction of the lever portion coincides with the flow path direction of the pipe connecting cylinder portion when
A locking part that can be locked to the lever part, and a leg part that can be locked to at least a part of the outer peripheral surface of the pipe connection cylinder part in an externally fitted state, are provided in one preventer main body,
Only in the open state of the gas flow path, the locking part is set to the lever part, and the leg part is set to the pipe connecting cylinder part so as to be locked simultaneously.   The gas stopper erroneous operation prevention tool according to claim 1, wherein the locking portion is a lever insertion hole through which the lever portion can be inserted.   The erroneous operation preventing device for a gas stopper according to claim 2, wherein a screw hole that opens from the top surface of the preventing device main body to the lever insertion hole, and a screw insertion from the top surface along with the screw engagement with the screw hole. A gas stopper misoperation prevention device characterized by being provided with a bolt that can be advanced into the hole. In the gas stopper erroneous operation prevention tool according to any one of claims 1 to 3, the prevention tool main body is provided with a belt-like body that can be wound around the pipe connection cylinder portion,
An instrument for preventing erroneous operation of a gas plug, wherein the band-shaped body is set to be fixable in a state where the outer periphery of the pipe connecting tube portion is tightened. The erroneous operation preventing tool for a gas stopper according to claim 1, wherein the locking portion is a male screw member that is screwed into a screw hole provided in the preventing tool body,
The male screw from the screw hole so that the head portion of the male screw member presses the lower surface of the lever portion in a state where the leg portion is locked to the pipe connecting tube portion of the gas stopper in the open state. An instrument for preventing erroneous operation of a gas stopper, wherein the protruding length of a member can be set.   The gas stopper erroneous operation prevention device according to any one of claims 1 to 5, wherein an outer peripheral surface of the pipe connecting tube portion is formed in a substantially hexagonal shape, and the leg portion corresponds to a part of the hexagonal shape. A gas stopper misoperation prevention device, characterized in that it is formed in a shape.   A gas stopper, comprising the gas stopper erroneous operation prevention device according to any one of claims 1 to 6.

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