JP6534276B2 - Buried type gas valve - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a buried gas valve of the type that is buried under a wall or under a floor.

As a buried type gas plug to be buried under the floor, for example, one having a configuration disclosed in Patent Document 1 is known.
In this gas plug (100), as shown in FIG. 4, the plug cylinder (10) is internally fitted to one end (1a) of the substantially L-shaped gas plug main body (1), and the other end (1b) is connected to a pipe The part (11) is externally fitted, and as a whole, is configured in a substantially L shape.

  The casing (31) accommodating the gas plug (100) is a bottomed cylindrical body which can be dropped into the gas plug mounting hole (50) formed in the floor plate (5) by a hole saw, and its upper open end edge From the above, a flange portion (32) having a substantially square outer shape for locking on the periphery of the gas plug mounting hole (50) protrudes in four directions. In addition, a plug insertion hole (30) for inserting the plug cylinder (10) is formed at a position eccentric to one side wall side of the center of the bottom wall (3) of the casing (31).

  When the plug cylinder (10) is inserted into the plug insertion hole (30) from the outer side (back side) of the bottom wall (3) of the casing (31), the gas plug body (1) has one end (1a) By coming into contact with the periphery on the back side of the insertion hole (30), the bottom wall (3) of the casing (31) is prevented from coming off upward. In this state, the gas plug is made by screwing the nut portion (10b) with the male screw portion (10a) formed on the outer periphery of the proximal end portion of the plug cylinder (10) protruding into the casing (31) The main body (1) can be fixed to the bottom plate (3) of the casing (31). That is, the peripheral portion of the plug insertion hole (30) becomes a fixing portion of the gas plug body (1).

  As described above, since the plug insertion hole (30) is provided at a position deviated from the center of the bottom wall (3) toward one side wall, the plug cylinder (10) inserted into the plug insertion hole (30) Is projected closer to one side wall than the center in the casing (31), and a relatively wide space is formed on the other side wall side. In addition, although the socket removal apparatus (13) for removing the socket (not shown) connected to a plug cylinder (10) is set in the casing, in the side of the said wide space, the socket removal apparatus (13) An open / close lid (15) serving as a pushing operation mechanism moves forward and backward.

  The socket removing device (13) comprises a swing lever (14) made of a substantially U-shaped metal plate rotatably mounted in the vicinity of the base end of the body of the plug cylinder (10), and an upright posture from horizontal posture An open / close lid (15) which can be turned up to 90 degrees, and a holding member (16) provided with these and housed in the casing (31), the open / close lid (15) is pivoted in the opening direction After being erected, the rocking lever (14) can be rocked by pushing it into the casing (1) in the upright posture, and the rocking end of the rocked lever (14) is Push the forward and backward cylinder of the socket (not shown) in the release direction. Thereby, the locked state of the socket is released, and the socket can be removed from the plug cylinder (10).

  After housing the gas plug main body (1) and the socket removing device (13) in the casing (31), drop the casing (31) into the gas plug mounting hole (50) to make the flange portion (32) a gas A decorative plate (33) is attached to the surface of the floor plate (5) so as to be fixed to the periphery of the plug mounting hole (50) and surround the entire hook portion (32), and the window of the decorative plate (33) The tip of the plug cylinder (10) is exposed from the portion (33a). The window portion (33a) of the decorative plate (33) is closed by the open / close lid (15) in the horizontal posture.

JP, 2015-31398, A Design registration No. 1172447 gazette

  As described above, in the conventional gas plug (100), the plug insertion hole (30) has the casing (31) to secure a space for rotating the open / close lid (15) of the socket removing device (13) by 90 degrees. ) Is formed at a position eccentric to the center of the bottom wall (3), for example, tension by a flexible pipe (6) connected to the pipe connection (11) at the time of or after the installation of the gas valve (100) When a force acts on the fixed portion of the gas plug body (1), it is difficult to receive the force evenly over the entire bottom wall (3), and the tensile force causes the bottom wall (3) of the casing (31) to There is a disadvantage that the fixing portion of the gas plug body (1) is deformed or distorted. In such a case, there is a problem that the air tightness between the plug insertion hole (30) of the bottom wall (3) of the casing (1) and the gas plug body (1) is impaired.

In order to improve the strength of the bottom wall (3) against the careless force acting on the fixing portion of the gas plug body (1), the fixing portion of the gas plug body (1) should be provided at the center of the bottom wall (3). Is considered. As a result, the entire bottom wall (3) can receive equally the external force on the fixed portion of the gas plug body (1), and a part of the bottom plate (3) is deformed or distorted. It is possible to solve the problem that the airtightness of the fixed part of (1) is impaired.
However, when the gas plug main body (1) is fixed to the center of the bottom wall (3) of the casing (31), the plug cylinder (10) is positioned at the center of the casing (31). As a result, the space for setting the socket removal device (13) is narrowed. For this reason, there is a possibility that the turning operation or pushing operation of the opening / closing lid (15) may be disturbed, and by forcibly operating the opening / closing lid (15), the opening / closing lid (15) is a holding member (16) or a casing ( There is a disadvantage that the open / close lid (15) is scratched by rubbing against 31).

The present invention has been made in view of the above-mentioned problems, and it is a cylinder with a bottom open at one end, which is dropped and fixed in a gas plug mounting hole formed in a wall plate or a floor plate ,
A gas plug body airtightly fixed to the bottom wall of the casing in a mode in which the plug cylinder projects into the casing and the pipe connection portion projects out of the casing;
And a socket removing device for removing the socket which is housed in the casing together with the plug cylinder and connected to the plug cylinder,
The socket detaching device is pivotable between a holding member in which the tip end portion of the plug cylinder is accommodated, and an open posture rotated by 90 degrees from a closed position provided on the holding member and covering the tip of the plug cylinder. In the embedded gas plug having the open / close lid movable in the pushing direction in the open position, and the unfixed external force acting on the fixing portion of the gas plug body on the bottom wall of the casing, An object of the present invention is to prevent deformation and distortion and to facilitate rotation operation and pushing operation without damaging the open / close lid of the socket removing device.

The buried type gas plug according to the present invention taken to solve the above-mentioned problems, “The plug cylinder is disposed on the central axis of the casing,
The holding member is provided with a protective wall surrounding an outer side of a locus position projecting to the outermost side of the movement locus at the time of the turning operation and the pushing operation in plan view of the opening / closing lid.
The holding member is housed in the casing with the protective wall inscribed in the casing.

According to the above means, since the plug cylinder is located on the central axis of the cylinder constituting the casing, the fixing portion of the gas plug body to the bottom wall of the casing is the center of the bottom wall. Thus, when an external force such as a tensile force of the flexible tube acts on the fixing portion, the force can be uniformly received over the entire bottom wall.
Since the plug cylinder projects on the central axis of the casing, the space for installing the socket removal device is narrower than that of the conventional one in which the plug cylinder is positioned closer to one side wall of the casing. When the opening / closing lid in the closed posture is viewed in a plan view in the holding member to be stored in the holding member, the turning position of the opening / closing lid 90 degrees and the pushing position of the opening / closing lid Further, a protective wall surrounding the outer side is provided, and the holding member can be accommodated in the casing so that the protective wall is inscribed in the casing. It will be performed more inside than it is. Thus, the open / close lid does not contact or abut on the inner peripheral surface of the casing at the time of the turning operation or the pushing operation.

In the buried type gas plug, preferably, “the outer peripheral surface of the protective wall is formed in an arc shape along the inner peripheral wall of the casing, and when the holding member is accommodated in the casing, the back end edge of the protective wall The housing is set to abut on the bottom wall of the casing. When the holding member is housed in the casing, the protective wall is used as a guide and the outer peripheral surface of the protective wall is placed along the inner peripheral wall of the casing. By doing this, the holding member can be accommodated in the casing in the correct posture, and there is no inconvenience that the protective wall is deformed against the peripheral wall of the casing.
Further, since the holding member is housed in the casing until the back edge of the protection wall abuts on the bottom wall of the casing, the back edge of the protection wall can not be abutted on the bottom wall of the casing In addition, it is possible to suspect that the holding posture of the holding member is not sufficient, dust or foreign matter is not attached to the inside of the casing or the holding member, etc., correct the posture of the holding member, or block obstacles such as dust or foreign matter. It can be removed. Therefore, since the holding member is not accommodated in the casing with the distorted posture or the foreign matter mixed, the operation failure and damage of the open / close lid can be reliably prevented.

In the above-mentioned buried type gas plug, “the holding member is provided with a spring member for urging the open / close lid in the closing direction,
The protective wall is provided so as to surround the outside of the outermost track position of the movement locus of the spring member at the time of turning operation and pushing operation of the opening and closing lid in plan view of the opening and closing lid Even when the spring member for urging the open / close lid in the closing direction is provided on the outer side of both side surfaces of the open / close lid, the movement locus of the spring member accompanying the opening / closing operation and pushing operation of the open / close lid is also protected By being positioned inward of the wall, the spring member is protected by the protective wall from the impact of external force. Therefore, regardless of the presence or absence of the spring member, the opening / closing operation and the pressing operation of the open / close lid are not disturbed.

  Furthermore, in the buried type gas plug, preferably, a plug insertion hole through which the plug cylinder can be inserted is formed at the center of the bottom wall of the casing, and the plug cylinder can be inserted into the center of the corresponding holding member It is easy to position the plug cylinder in the casing and in the holding member by inserting the plug cylinder into the plug insertion hole of the casing and the round hole of the holding member. The plug cylinder is supported at the periphery of the plug insertion hole in the casing and at the periphery of the round hole in the holding member, so that the posture at the time of storage can be stabilized.

  Furthermore, in the above-mentioned buried type gas plug, preferably, “socket removing device is swung by pushing operation of the open / close lid and at the swing end portion thereof in a direction to release the advancing and retracting tube of the socket connected to the plug tube. The rocking lever includes a pushable rocking lever, and the rocking lever is rockably locked to the base of the holding member or the plug cylinder. The plug cylinder and the socket removing device are accommodated in the casing. The open / close lid of the socket removing device in the closed position is turned 90 degrees to be in the open position, and the socket is connected to the plug cylinder in the holding member. Then, when the open / close lid in the open position is pushed back, one end of the rocking lever is pushed back by the pushing operation of the open / close lid, the rocking lever is rocked, and the other end moves forward / backward of the socket in the release direction The socket can be removed from the plug cylinder as a pivoting end for pressing.

Furthermore, in the above-mentioned buried type gas plug, preferably, “the flange portion protrudes from one open end of the casing,
Flat portions positioned parallel to each other are formed on opposite side walls of the circumferential wall of the cylindrical body of the casing,
In each position of the flange portion located on the plane portion side, there is provided an attachment portion of a fixing bracket for fixing the casing to a floor plate or a wall plate. Among the peripheral walls, flat portions are formed at opposing positions, so that the outer shape of the peripheral wall has a shape consisting of a pair of flat portions and a pair of arc-shaped surface portions located between them. When a circular gas plug mounting hole is formed in the wall plate or floor plate using a hole saw, and the casing is inserted into the gas plug mounting hole, a comparison is made between the flat portion and the periphery of the gas plug mounting hole. Wide gap occurs. Even when the mounting bracket is mounted on the casing by positioning the mounting bracket at the flange portion corresponding to the gap, the mounting bracket can be used when inserting the casing into the gas plug mounting hole of the wall plate or floor plate Will not get in the way. As described above, since it is not necessary to provide a relief hole for releasing the fixing fitting inward of the casing in the casing, the airtightness of the casing can be secured.

  Since the fixing portion of the gas plug main body to the bottom wall of the casing is provided at the center of the bottom wall, the casing is structurally strengthened. For example, the gas plug by a flexible tube with high rigidity at the time of construction etc. Even if an unintended tensile force acts on the fixing portion of the main body, the bottom wall of the casing does not deform or distort. Therefore, the airtight structure in the fixing portion of the gas plug body can be secured. In addition, since the casing does not deform, the plug cylinder does not tilt with respect to the axis of the casing, and there is no occurrence of operation failure in attaching and detaching the socket accompanying the use of the gas plug.

  Also, even if the space for installing the socket removing device becomes narrow, a protective wall is provided to protect the pivoting operation and pushing operation of the pivoting lid from the outside, and the holding member is Since the housing can be accommodated, these operations can be performed reliably and smoothly without the rotating lid coming in contact with or abutting on the casing at the time of rotating operation and pushing-in operation of the rotating lid. In addition, since the pivoting lid does not contact the casing at the time of operation, damage to the pivoting lid can also be prevented.

It is sectional drawing which shows the attachment state of the buried type gas plug in embodiment of this invention. It is an exploded perspective view of a burial type gas plug in an embodiment of the invention. It is a bottom view of a holding member adopted as a burial type gas plug in an embodiment of the invention. It is sectional drawing of the conventional buried type gas plug.

Hereinafter, embodiments of the present invention will be described based on the drawings.
As shown in FIGS. 1 and 2, in the gas plug employed in this embodiment, a plug cylinder (2a) for socket connection is connected to the downstream end, and a flexible pipe (6) is connected to the upstream end. Of the substantially L-shaped gas plug body (2) in which the pipe connection portion (2b) to be formed is formed, and the center of the bottom wall (20a) of the casing (20) A gas plug insertion hole (22) of such a size that the downstream end side can just be inserted is formed.

  A flange plate (24a) protrudes at a predetermined position on the body peripheral surface on the downstream end side of the gas plug body (2), and a male screw portion (24b) is formed on the downstream side thereof. When the plug cylinder (2a) is inserted into the gas plug insertion hole (22) from the outer surface side of the bottom wall (20a) of the casing (20), the flange plate (24a) becomes the outer surface of the bottom wall (20a) of the casing (20). , And the gas plug body (2) is in a state of being prevented from coming out upward. In this state, when the nut (241) is screwed from the inside of the casing (20) to the male screw portion (24b) protruding into the casing (20), the plug cylinder (2a) becomes the casing (20) The gas plug body (2) can be fixed to the bottom wall (20a) so as to project on the central axis of the.

The gas plug insertion hole (22) is a round hole of a size capable of inserting the body of the gas plug body (2) on the downstream side of the flange plate (24a), and the gas plug insertion hole (22) and the gas plug body Since the flange plate (24a) protrudes on the back surface of the bottom wall (20a) so as to close the gap with the peripheral surface on the downstream end side of (2), from the bottom wall (20a) of the casing (20) Venting is shut off reliably.
The peripheral portion of the gas plug insertion hole (22) is a fixed portion of the gas plug body (2).

The casing (20) is an upwardly open substantially cylindrical cylinder which can be dropped into the gas plug mounting hole (50) formed in the floor plate (5), and both sides of the peripheral wall thereof are opposed to each other. As shown in FIG. 2, flat portions (25a) and (25a) are formed on the wall.
Thus, the peripheral wall of the casing (20) is formed of the flat portions (25a) (25a) and the arc-shaped surface portions (25b) (25b) located between them, and on the bottom wall (20a) One of the arc-shaped surface portions (25b) is an inclined surface portion (27) having an arc-shaped cross section so as to have a piece-tapered shape whose diameter decreases toward the end.

At the upper open end of the casing (20), a flange portion (21) having a substantially square outer shape for engaging with the peripheral edge of the gas plug mounting hole (50) protrudes in four directions.
Screw insertion holes (26) and (26) for inserting tightening screws (not shown) are formed at respective positions following the flat portions (25a) and (25a) in the collar portion (21). When the clamping screw is swung inward, a concave groove (25c) of a width into which the screw shaft can be inserted is formed on the center line along the depth direction of each flat portion (25a) .

Then, the socket removing device (40) is accommodated in the space around the plug cylinder (2a) which is projected into the casing (20).
The socket removing device (40) is disposed so as to sandwich the vicinity of the downstream end on the plug cylinder (2a) side of the gas plug body (2) as shown in FIGS. 1 and 2 and is pivotably supported. Swinging lever (4) made of a substantially U-shaped metal plate, an open / close lid (41) for swinging the same, and a holding member provided with these and fixed in the casing (20) 42), and a circular hole (44) through which the plug cylinder (2a) can be inserted is formed at the center of the holding member (42), and at each position opposed via the circular hole (44) Fixing bolts (not shown) are respectively inserted into the screw insertion cylinders (45) (45) provided, and screwed into screw holes (28) (28) formed in the bottom wall (20a) of the casing (20). By doing this, the holding member (42) is fixed to the bottom wall (20a) of the casing (20).

  In addition, the open / close lid (41) is openable and closable on opposite side surfaces of the holding member (42) via the coil springs (43) and (43) in a direction to close the upper open portion of the holding member (42). It is provided in an energized state.

  The holding member (42) has an outer shape along the inner peripheral shape of the peripheral wall of the casing (20) in a plan view, and as shown in the bottom view of FIG. ) Is formed. Further, on the inclined surface (27) side of the casing (20), there are provided three inclined plates (47) inclined at the same inclination angle and partially inscribed in the inclined surface (27), and On the opposite side, a protective wall (46) inscribed in one arc-shaped surface (25b) of the casing (20) is provided.

The open / close lid (41) is turned 90 degrees from the closed position shown in FIG. 1 and turned to the open position when it is upright, on the protective wall (46) side of the open / close cover (41) Although both ends (41b) (41b) of the end edge (41a) form a movement locus that protrudes outward in the plan view, the protective wall (46) is the end in the most extended state The holding member (42) is provided so as to surround the outside further than the both ends (41b) (41b) of the edge (41a), and the protective wall (46) is an arc-shaped surface (41) of the casing (20). Since the holding member (42) is configured to be housed in the casing (20) so as to internally contact with 25b), the opening / closing lid (41) can hold the holding member (42) during the turning operation and the pushing operation. And the inner peripheral surface of the casing (20). Thus, the opening and closing operation and the pushing operation can be smoothly performed without damaging the opening and closing lid (41).
In addition, the protective wall (46) is located outside the installation position of the coil spring (43) biasing the open / close lid (41) in the closing direction. Thus, the coil spring (43) is also protected from external impact by the protective wall (46).

The rocking lever (4) provided on the holding member (42) has substantially the same structure as that of the conventional one shown in FIG. 4, and a casing is provided in the vicinity of the round hole (44) of the holding member (42). It is pivotally supported pivotably in the depth direction of (20).
When a socket (not shown) is attached to the plug cylinder (2a), the pressing end (4a) (4a), which is both free ends of the U-shaped member, is moved backward by the advancing and retracting cylinder at the tip of the socket. When it is pushed, the rocking lever (4) swings in the direction in which the operation end (4b) which is the connection end of the U-shaped body ascends.

  Then, in order to remove the socket attached to the plug cylinder (2a), the open / close lid (41) in the upright state is pushed into the casing (20). As a result, when the operation convex portion (48) protrudingly provided on the back surface of the open / close lid (41) is pushed inward, the operation end (4b) of the rocking lever (4) is pushed back. The rocking lever (4) is rocked, and the pressing end (4a) (4a) pushes up the advancing and retracting cylinder of the socket in the releasing direction. Then, the locked state of the socket is released, and the socket can be removed from the plug cylinder (2a).

  A casing (20) in which the gas plug body (2) is fixed at the center of the bottom wall (20a) of the holding member (42) equipped with the open / close lid (41) and the swing lever (4) as described above In order to be accommodated inside, the three inclined plates (47) of the holding member (42) are provided on the inclined surface (27) of the peripheral wall of the casing (20), and the protection wall (46) is provided for the other circular arc part (25b). These inclined plates (47) and protective wall (46) serve as guides for accommodating the holding member (42) in the casing (20), and the holding member (42) is in the correct posture. It can be accommodated in the casing (20), and the plug cylinder (2a) can be protruded from the round hole (44) of the holding member (42). At the same time, the screw insertion cylinder (45) can be made to correspond to the screw hole (28), and the holding member (42) can be fixed in the casing (20).

  Further, the holding member (42) is normally housed in a state of being housed until the lower end portion (46a) of the protective wall (46) abuts on the bottom wall (20a) of the casing (20). Therefore, when the lower end portion (46a) of the protective wall (46) can not abut on the bottom wall (20a) of the casing (20), there is a defect in the accommodation posture of the holding member (42) The holding member (42) is once taken out from the casing (20), and it is checked whether there is an obstacle attached to the inner peripheral wall or bottom wall (20a) of the casing (20). And if attached, clean it. After removing the obstacle, the protective wall (46) is accommodated again while inscribed in the casing (20). Thereby, there is no inconvenience that the gas plug is used in a state where the holding member (42) is not normally accommodated in the casing (20).

In order to attach the casing (20) to which the gas plug body (2) and the holding member (42) are fixed to the floor plate (5), a hole for gas plug attachment (50) is formed by a hole saw at a predetermined position of the floor plate (5). And draw out the flexible tube (6) previously laid under the floor from the gas plug mounting hole (50) into the room and connect the pipe connection portion (2b) of the gas plug body (2) indoors .
Then, a tightening screw (not shown) is inserted into the screw insertion holes (26) and (26) of the collar portion (21), and a fixing tool (not shown) such as a fitting or nut is attached to the screw shaft. When screwing down the casing (20) into the gas plug mounting hole (50), the screw shaft of the tightening screw should be in the groove portion of the flat portion (25a) (25a) so that the tightening screw and fixing tool do not get in the way. 25c) With housing in (25c), push the casing (20) into the gas plug mounting round hole (50) together with the flexible tube (6).

  Because the flexible tube (6) used as gas piping is strong, when pushing the casing (20) into the gas plug mounting round hole (50), the flexible tube (6) to the gas plug body (2) is Depending on the position and orientation, the force from the flexible tube side may act on the pipe connection part (2b) to affect the fixing part of the gas plug body (2) in the bottom wall (2a) of the casing (20) However, in this embodiment, since the fixing portion of the gas plug body (2) is provided at the center of the bottom wall (20a), the flange of the gas plug body (2) from the flexible tube (6) An external force such as a tensile force transmitted to the bottom wall (20a) via the plate (24a) acts uniformly on the entire bottom wall (20a), and the bottom plate (20a) of the casing (20) There is no deformation or distortion. Therefore, the flange plate (24a) is maintained in a state of being attached to the peripheral surface of the gas plug insertion hole (22) of the bottom plate (20a), and the airtightness in the casing (20) is not lost Be done.

In the same manner as described above, drop the casing (20) into the gas plug mounting hole (50), lock the flange (21) to the periphery of the gas plug mounting hole (50), and tighten the clamp screw and fastener. After fixing, a decorative plate (51) is attached to the surface of the floor plate (5) so as to entirely surround the surface of the collar portion (21) of the casing (20) from above, Installation to the floor board (5) is complete.
A window (52) of such a size that the open / close lid (41) is just exposed is formed at the center of the decorative plate (51).

In the buried type gas plug according to the embodiment of the present invention, the plug cylinder (2a) is positioned on the central axis of the casing (20) to strengthen the structure of the casing (20). Since the fixing portion to the bottom wall (20a) of the casing (20) is provided at the center of the bottom wall (20a), one side wall from the center of the casing (20) in consideration of the rotation of the open / close lid (41) Compared with the conventional one in which the fixing portion of the gas plug body (2) is located at a position biased to the side, the space for housing the socket removing device (40) is narrower, but the open / close lid (41) Since the turning and pushing operations are possible within the protective wall (46) of the holding member (42) inscribed in the casing (20), the open / close lid (41) contacts or abuts on the casing (20) There is nothing to do. Therefore, even when provided at the center of the casing (20) of the fixed part of the gas plug body (2), the opening and closing operation and pushing operation of the opening and closing lid (41) can be performed smoothly without any problem, and the opening and closing lid (41) is operated There is no such thing as rubbing and damage.
In the above embodiment, although the floor plate buried type gas plug mounting structure has been described, it is needless to say that the wall plate can be similarly installed.
Further, the holding member (42) may be integrated with the decorative plate (51), and the gas plug body (2) and the casing (20) may be fixed by using a plurality of small screws instead of the nut (241). It may be

(2) ..... ... gas plug body
(2a) ........... Plug cylinder
(2b) ·········· Piping connection
(20) ... ... ... casing
(20a) · · · · · · · · · · · · · bottom wall
(40) ············ Socket removal device
(41) .....
(42) ........... Holding member
(46) ········· Protective wall
(5) ........... Floor board
(50) ・ ・ ・ ・ ・ ・ ・ Gas plug mounting hole
(6) ········ Gas piping

Claims (6)

A bottomed cylindrical body opened to one side, the casing being dropped and fixed in a gas plug mounting hole formed in a wall plate or floor plate;
A gas plug body airtightly fixed to the bottom wall of the casing in a mode in which the plug cylinder projects into the casing and the pipe connection portion projects out of the casing;
And a socket removing device for removing the socket which is housed in the casing together with the plug cylinder and connected to the plug cylinder,
The socket detaching device is pivotable between a holding member in which the tip end portion of the plug cylinder is accommodated, and an open posture rotated by 90 degrees from a closed position provided on the holding member and covering the tip of the plug cylinder. An embedded gas plug having an open / close lid movable in the pushing direction in the open position,
The plug cylinder is disposed on the central axis of the casing,
The holding member is provided with a protective wall surrounding an outer side of a locus position projecting to the outermost side of the movement locus at the time of the turning operation and the pushing operation in plan view of the opening / closing lid.
The holding member is an embedded gas plug housed in a casing in a state in which a protective wall is inscribed in the casing.   The buried type gas plug according to claim 1, wherein the outer peripheral surface of the protective wall is formed in an arc shape along the inner peripheral wall of the casing, and the rear end edge of the protective wall when the holding member is accommodated in the casing. Buried gas plug, which is set to abut the bottom wall of the casing. The buried type gas plug according to claim 1 or 2, wherein the holding member is provided with a spring member for biasing the open / close lid in the closing direction,
The protective wall is provided so as to surround the outside of the outermost track position of the movement locus of the spring member at the time of turning operation and pushing operation of the opening and closing lid in plan view of the opening and closing lid Buried gas plugs.   The embedded gas plug according to any one of claims 1 to 3, wherein a plug insertion hole through which the plug cylinder can be inserted is formed at the center of the bottom wall of the casing, and at the center of the corresponding holding member An embedded gas plug having a round hole through which the plug cylinder can be inserted.   The embedded gas valve according to any one of claims 1 to 4, wherein the socket removing device is swung by the pushing operation of the open / close lid and advances and retracts of the socket connected to the plug cylinder at its swinging end. The embedded gas plug is provided with a rocking lever that can be pressed in a direction for releasing the cylinder, and the rocking lever is rockably engaged with the holding member or the base of the plug cylinder. In the buried type gas plug according to any one of claims 1 to 5, a flange portion protrudes from one open end of the casing,
Flat portions positioned parallel to each other are formed on opposite side walls of the circumferential wall of the cylindrical body of the casing,
The buried type gas plug in which mounting parts for fixing metal fittings for fixing the casing to a floor plate or a wall plate are provided at each position of the flange portion located on the flat portion side.

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