JP6014365B2 - Buried gas plug - Google Patents

Description

  The present invention relates to an embedded gas stopper embedded in a wall surface or a floor surface.

  As an embedded gas plug, switching from an old-style gas plug that opens and closes the gas plug by turning a knob to a new type of gas plug that enables the socket to be attached to and detached from the plug portion with one touch is in progress. In this structure, an operation button that is operated when the socket is removed is disposed at a position where the old knob is disposed.

As shown in FIG. 5, the gas plug main body (3) of the old buried gas plug as described above has a cylindrical shape that is fitted closer to the indoor side of the through hole (50) opened in the wall plate (5). The pipe (30) is drawn from the outside into the through hole (50), and the connection joint (31) is connected to the downstream end thereof.
A flange plate (32) projects radially from the downstream end of the connection joint (31), and the open end on the back side of the casing (51) is screwed to the flange plate (32).

A plurality of projecting pieces (33) project outward from the upstream end of the gas plug body (3), and are fixed to the flange plate (32) of the connection joint (31) by screws. The gas plug main body (3) is fixed to the connection joint (31), and is placed in a positioning state in the casing (51).
A decorative plate (52) is attached to the open end of the casing (51) on the indoor side so as to be freely opened and closed.

  To replace this type of gas plug body (3) with a new type of gas valve that has an operation button that allows the socket attached to the plug part (4) to be removed with a single touch, first of all, a decorative board is installed from the indoor side. (52) is removed, and the fixing bolt (40) that screw-connects the projecting piece (33) of the gas plug body (3) and the flange plate (32) of the connection joint (31) is removed. As a result, the gas plug main body (3) in a free state is pulled out from the casing (51) to the indoor side and taken out.

  In the through hole (50) after removing the gas plug body (3), the casing (51) and the connection joint (31) fixed to the open end on the back side of the casing (51) are connected to the pipe (30). In this state, a new type gas plug body (not shown) is connected thereto.

To do this, first insert the new type gas plug body into the casing (51) from the indoor side, and insert the overflow prevention valve that protrudes into the back end (upstream end) into the connection joint (31). At the same time, the screw insertion hole provided at a predetermined position of the gas plug body is made to correspond to the screw hole (34) formed in the flange plate (32) of the connection joint (31), and the fixing bolt (40) is attached. It is fixed by screwing into the screw hole (34) of the flange plate (32) from the screw insertion hole of the gas plug body.
Thereafter, a new decorative panel for the gas stopper is attached to the indoor side open end of the casing (51), and the replacement operation of the gas stopper is completed.

Japanese Utility Model Publication No. 56-15895 Japanese Utility Model Publication No. 63-94375

  However, in the conventional gas plug replacement operation, the through hole (50) is provided at a low position on the wall plate (5), and the connection joint (31) for connecting a new gas plug is provided in the chamber of the casing (51). Since it is located behind the inner open end, work to connect a new gas plug to it, that is, work to insert the overflow prevention valve protruding from the rear end of the gas plug body into the connection joint (31), The positioning work for making the screw insertion hole of the new gas plug body correspond to the screw hole (34) of the flange plate (32), and the fixing work for screwing and connecting the two with the fixing bolt (40) must be carried out by hand. In other words, it was difficult to do and the workability was poor.

  Also, if a new gas plug body is forcibly inserted in a state of being displaced with respect to the connection joint (31), the rear end portion of the gas plug body and the overflow prevention valve projecting from it, further, the connection joint (31 ) Or the O-ring interposed between the two may be damaged. Further, if the fixing bolt (40) is forcibly screwed with the screw insertion hole of the gas plug body not corresponding to the screw hole (34) of the connection joint (31), the fixing bolt (40) or There arises a problem that the screw hole (34) is broken, resulting in poor connection.

In the present invention, “a cylindrical casing is inserted into a through-hole formed in a wall or a floor,
A connection joint for pipe connection is fixed to the open end on the back side of the casing,
In the casing, a gas plug main body from which a plug portion for connecting a socket protrudes on the front side and an upstream side connection portion for connecting to a connection tube portion of the connection joint on the back side protrudes,
In the embedded gas plug in which a screw insertion hole is formed at a predetermined position of the gas plug main body corresponding to a screw hole formed at a predetermined position of the connection joint, the mounting operation of the gas plug main body is facilitated. The task is to ensure implementation.

The technical means of the present invention for solving the above-mentioned problem is as follows: “In the casing, the upstream connection portion of the gas plug main body is inserted and connected to the connection cylinder portion of the connection joint, and the gas plug main body A guide portion having an arcuate outer peripheral surface that is substantially in contact with the arcuate inner peripheral surface of the casing in a housing posture of the gas plug main body in which the screw insertion hole corresponds to the screw hole of the connection joint. Provided in
The guide portion is composed of a front guide plate provided in the vicinity of the proximal end portion of the plug cylinder and a rear guide plate provided in the vicinity of the proximal end portion of the upstream connection portion .

The technical means operates as follows.
A cylindrical casing and a connection joint to which piping is connected remain in the through hole after the old gas plug main body is taken out in a state of being fixed to the open end on the back side of the casing. In order to connect a new gas plug body to this connection joint, the gas plug body is in a posture that the upstream connection part and screw insertion hole of the gas plug body will correspond to the connection cylinder part and screw hole of the connection joint respectively. The gas stopper main body is inserted into the casing while the arcuate outer peripheral surface of the guide portion is aligned with the arcuate inner peripheral surface of the cylindrical casing.
By aligning the arc-shaped outer peripheral surface of the guide part with the arc-shaped inner peripheral surface of the casing, the gas plug body is almost positioned in the radial direction in the casing. The screw insertion hole is naturally guided to the screw hole through the connecting tube portion of the joint.
When the screw insertion hole of the gas plug main body is slightly deviated from the screw hole of the connecting cylinder portion, the gas plug main body can be easily positioned in the correct posture by finely adjusting the gas plug main body in the rotation direction.
If the fixing bolt is inserted into the screw insertion hole and screwed into the screw hole while maintaining this positioning state, the gas plug body can be accurately connected to the connection joint.

The guide portion has a front guide plate provided on the base end vicinity of the plug tube is constituted by a guide plate and then provided near the base end portion of the upstream-side connecting portion, these gas valve By providing the gas stopper main body at two locations along the insertion direction of the main body via a predetermined distance, the gas stopper main body is positioned at two locations separated by a predetermined distance in the insertion direction when the gas stopper main body is inserted into the casing. Therefore, the gas plug body does not tilt or distort when inserted.

  Furthermore, in the buried gas plug, “the guide portion has a shape having an arcuate outer peripheral surface of a predetermined length along the insertion direction of the gas plug main body”, the gas plug main body is inserted into the casing. Then, since the entire area of the arc-shaped outer peripheral surface having a predetermined length along the insertion direction is along the inner peripheral surface of the casing, the gas plug body is supported in the casing over a wide range and is distorted. Positioning can be performed reliably without any problems.

  Further, in the buried gas plug, in the case where “the guide portion has a substantially semicircular cross section projecting below the gas plug main body”, the arc-shaped outer peripheral surface of the guide portion configured in a substantially semicircular shape is used. By following the inner peripheral surface of the casing, the radial movement of the gas plug main body in the casing will be further restricted, and further, the `` the top surface of the guide part is positioned horizontally '', By setting the arc-shaped outer peripheral surface of the semicircular guide part along the lower half of the inner peripheral surface of the casing and the top surface thereof being positioned horizontally, the gas is applied to the connection joint in the casing. Since the plug body can be positioned almost accurately, the operation of replacing the gas plug can be performed more easily.

  Moreover, in the above-mentioned buried type gas plug, “the guide part is detachable from the gas plug body” is used as a jig for positioning by attaching to the gas plug only when the gas plug is replaced. It is not necessary to always attach to the gas stopper body.

Since this invention is the said structure, it has the following peculiar effect.
The gas stopper main body can be roughly positioned with respect to the connecting joint simply by inserting the gas stopper main body into the casing while keeping the arc-shaped outer peripheral surface of the guide portion along the arc-shaped inner peripheral surface of the casing. And if this is fine-tuned in the rotational direction as necessary, the upstream side connecting portion and the screw insertion hole of the gas plug main body are respectively accurately corresponded to the connecting cylinder portion and the screw hole of the connecting joint, and both are connected. Therefore, even if the through hole is provided at a low position on the wall plate and the connecting cylinder is located deep in the casing, the connecting joint of the gas plug main body It is easy to attach to the gas stopper, and the replacement work of the gas plug body can be performed reliably in a short time. In addition, each part will not be forced to connect properly without correspondingly, so the gas plug body, the connecting joint, or the fixing bolt or screw hole that connects both parts will be inadvertently damaged or poorly connected. There is no problem.

  Displacement and distortion at the time of insertion of the gas plug body are eliminated by providing the guide part at two locations separated along the insertion direction of the gas plug body or by having a shape having a predetermined length in the insertion direction. Therefore, positioning of the gas plug body to the connection joint becomes easier and more reliable, and the workability of the gas plug replacement operation is improved.

  If the positioning effect is enhanced by making the guide part approximately semi-circular or even its top surface positioned horizontally, the final fine adjustment becomes easier and the workability of the mounting work is further improved. To do.

  Furthermore, if the guide part can be attached to the gas plug body only when the guide part is used as a positioning jig, the guide part need not always be attached to the gas stopper body. In addition to being easy to handle, the burden on the connecting joint and the casing can be reduced.

Sectional drawing which shows the state in which the casing which mounts the buried type gas stopper of embodiment of this invention, and a connection coupling were installed in the wall board. The perspective view of the buried type gas stopper of embodiment of this invention. The fragmentary sectional view which shows a mode that the installation to the casing of the buried type gas stopper of embodiment of this invention was completed. The front view which shows the state which accommodated the buried type gas stopper of embodiment of this invention in the casing. Explanatory drawing of the mounting state of the buried type gas stopper of the conventional gas stopper.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a wall plate (5) with an old gas plug body removed, and a casing (2) is set in a through-hole (50), and a pipe is provided in the casing (2). The connecting joint (20) to which (30) is connected is fixed.
The through hole (50) is a round hole formed in the wall plate (5), and the casing (2) includes a cylindrical body (2a) having a size that can be accommodated in the through hole (50), and a body. An annular flange piece (2b) projecting radially outward from the indoor open end of the section (2a), and an annular bottom plate projecting radially inward from the rear edge of the body (2a) (2c), the annular flange piece (2b) is attached to the front surface of the wall plate (5) on the back surface, and the opening that opens at the center of the annular bottom plate portion (2c) has a connecting joint. (20) is fitted and fixed.

  The connecting joint (20) communicates with the screw hole (21) and the screw hole (21) to which the screw cylinder part (36) of the joint part (35) provided at the downstream end of the pipe (30) is screwed. And a connecting cylinder portion (22) into which an upstream connection portion (15) of a gas plug main body (1) to be described later is inserted and connected is a cylinder provided to be opened at both ends in the insertion direction. From the open end of the connecting tube portion (22), a flange plate (23) attached and fixed to the annular bottom plate portion (2c) of the casing (2) projects outward in the radial direction.

As shown in FIGS. 2 and 3, the gas plug body (1) accommodated in the casing (2) has a socket (41) on the front base (16) provided on the front side of the base (10). A cylindrical plug part (11) to which the plug is connected is projected, and an operation button (12) for releasing the socket connection state to the plug part (11) can be moved forward and backward above the plug part (11). It is attached to.
On the back surface of the base (10), a rear base (17) from which the upstream connection portion (15) protrudes is screwed from the back side.
Although not shown, the flange plate (23) is formed with one screw hole on each of the left and right sides, and the base (10) is also connected to each position of the rear base (17) corresponding to the screw hole. A screw insertion hole (18) penetrating therethrough is formed.
In this embodiment, the upstream connection portion (15) is provided with an overflow prevention valve.

  As shown in FIG. 2, the operation button (12) is interlocked with a swing lever (14) having a support shaft (13) attached to the base end of the plug portion (11) as a swing fulcrum. When the operation part (14b) at the lower end of the swing lever (14) is pushed inward due to the connection of the socket, the swing lever (14) swings so that the upper end pressing part (14a) protrudes indoors. Accordingly, the operation button (12) also protrudes. In this state, when the operation button (12) is pressed to the back, the swing lever (14) swings in the direction in which the pressing portion (14a) of the swing lever (14) is pressed to the back, and the operation portion (14b ) Will push the advancing and retracting cylinder at the tip of the socket in the release direction. Thereby, the connection state of the socket is released, and the socket can be removed from the plug portion (11).

And, in the gas plug main body (1) of this embodiment, the front guide plate (6) is front-facing in the lower region (19) of the front base (16) corresponding to the base end of the plug portion (12). The rear guide plate (7) is fixed to the lower region of the rear base (17) by screwing from the back side.
The front guide plate (6) and the rear guide plate (7) correspond to a guide portion as an invention specific matter.

The front guide plate (6) projects below and on both sides of the front base (16), and the rear guide plate (7) projects on the bottom and both sides of the rear base (17).
As shown in FIG. 3, the front guide plate (6) and the rear guide plate (7) are connected to the upstream connecting portion (15) of the gas plug main body (1) and the connecting tube portion (22) of the connecting joint (20). Insert the screw insertion hole (18) through the base (10) of the gas plug body (3) and the rear base (17) and insert the screw into the flange (23) of the connection joint (20). As shown in FIG. 4, with the correct housing posture of the gas plug main body (1) in the casing (2) corresponding to the hole (not shown), the circle of the body (2a) of the casing (2) It is formed in a substantially semicircular shape having arcuate outer peripheral surfaces (61) (71) along the arcuate inner peripheral surface (24).

  Also, as shown in the figure, the top surfaces (60), (70) of the front guide plate (6) and the rear guide plate (7) are both horizontal surfaces, and the top surface (70) of the rear guide plate (7) The arcuate outer peripheral surface (71) of the rear guide plate (7) is larger than the semicircle so that is positioned higher than the top surface (60) of the front guide plate (6).

To replace the old gas plug body that opens and closes the gas valve by turning the knob with a new type of gas valve body (1) as shown in Fig. 2, first attach it to the wall plate (5). The decorative plate is removed, and the fixing bolt that fixes the flange plate (23) of the connection joint (20) fixed to the back of the casing (2) and the gas plug body is removed. As a result, the gas plug main body in a free state can be taken out from the casing (2) to the indoor side.
The state where the gas plug main body is taken out is the state shown in FIG.

The casing (2) is still fitted in the through hole (50), and the gas plug body (1) according to the embodiment of the present invention as described above is newly accommodated therein.
Since the gas plug main body (1) is configured to include the front guide plate (6) and the rear guide plate (7) as described above, the gas plug main body (1) has the plug portion (11) in front. The top surface (60), (70) of the front guide plate (6) and the rear guide plate (7) are positioned horizontally, and the arcuate outer peripheral surface of the rear guide plate (7). (71) and the arcuate outer peripheral surface (61) of the front guide plate (6) are arranged along the lower half of the arcuate inner peripheral surface (24) of the body (2a) of the casing (2) in order. The plug body (1) is inserted into the casing (2).

  In this insertion posture, the gas plug main body (1) is positioned in the vertical and horizontal directions in the casing (2), and the upstream connection portion (15) of the gas plug main body (1) is connected to the connection joint. The screw insertion hole (18) of the gas plug body (1) is automatically inserted into the screw hole of the flange plate (23) of the connection joint (20). Correspondingly.

  If the screw insertion hole (18) is slightly displaced from the screw hole, it can be easily corrected by finely adjusting the gas plug body (1) in the direction of rotation. 2) Can be housed in the correct posture.

  While maintaining this state, a fixing bolt (not shown) is inserted into the screw insertion hole (18) from the front side of the base (10) of the gas plug body (1), and screwed into the screw hole of the flange plate (23). If combined, the gas plug body (1) can be fixed in the correct posture in the casing (2). In other words, the upstream connection part (15) is damaged without being properly inserted into the connection tube part (22) of the connection joint (20), or the screw insertion hole (18) is displaced with respect to the screw hole. The fixing bolt or screw hole is not damaged and the connection failure is not caused.

  After that, if the decorative plate (25) for the new gas plug body (1) is attached to the wall plate (5) so as to conceal the annular flange piece (2b) of the casing (2), Replacement work is completed.

  In this manner, the top surfaces (60) and (70) of the front and rear guide plates (6) and (7) are respectively supported horizontally, and the arc-shaped outer peripheral surfaces (61) and (71) are connected to the trunk portion (2a of the casing (2). The gas plug body (1) can be set in the casing (2) in the correct posture just by inserting it into the casing (2) along the lower half of the arc-shaped inner peripheral surface (24). Therefore, even when the through hole (50) is provided in a place near the floor surface of the wall plate (5) where it is difficult to replace, the gas plug main body (1) can be easily and accurately further quickly. It can be set in the casing (2).

  In the above embodiment, the front and rear guide plates (6) and (7) are provided as guide portions at two locations along the insertion direction of the gas plug main body (1). ) (7) arcuate outer peripheral surfaces (61) (71) may be connected to provide a single guide tube. In this case, since the area of the arcuate outer peripheral surface of the guide tube extending along the arcuate inner peripheral surface (24) of the casing (2) is increased, more reliable positioning is possible.

  The front and rear guide plates (6) and (7) or the guide cylinder as described above are detachable from the gas stopper main body (1), and are attached to the gas stopper main body (1) as a jig only when necessary. May be. In this case, when there is no need to perform positioning work, removing the front and rear guide plates (6) and (7) can reduce the weight of the gas plug body (1) and facilitate the handling of stock items. Become.

  Furthermore, either one or both of the front and rear guide plates (6) and (7) can be an annular plate along the entire circumference of the arcuate inner peripheral surface of the body (2a) of the casing (2). .

(1) ... Gas stopper body
(11) ... Plug part
(15) ... Upstream side connection
(18) ... Screw insertion hole
(2) ... casing
(20) ... Connecting joint
(22) ... Connection tube
(24) ... Arc inner surface
(5) ・ ・ ・ ・ ・ ・ ・ ・ Wallboard
(50) ... through hole
(6) ・ ・ ・ ・ ・ ・ ・ ・ Front guide plate (guide part)
(61) ... Arc outer peripheral surface
(7) ・ ・ ・ ・ ・ ・ ・ ・ Rear guide plate (guide part)
(71) ... Arc outer peripheral surface

Claims (5)

A cylindrical casing is inserted into a through-hole formed in the wall or floor,
A connection joint for pipe connection is fixed to the open end on the back side of the casing,
In the casing, a gas plug main body from which a plug portion for connecting a socket protrudes on the front side and an upstream side connection portion for connecting to a connection tube portion of the connection joint on the back side protrudes,
In the buried type gas stopper in which a screw insertion hole is formed at a predetermined position of the gas stopper main body corresponding to a screw hole formed at a predetermined position of the connection joint,
In the casing, a gas plug body in which an upstream connection portion of the gas plug body is inserted and connected to a connection cylinder portion of the connection joint, and a screw insertion hole of the gas plug body corresponds to a screw hole of the connection joint. A guide portion having an arcuate outer peripheral surface that is substantially in contact with the arcuate inner peripheral surface of the casing in the housing posture of the casing ,
The guide portion includes a front guide plate provided in the vicinity of the proximal end portion of the plug cylinder and a rear guide plate provided in the vicinity of the proximal end portion of the upstream connection portion. Buried gas plug.   2. The embedded gas plug according to claim 1, wherein the guide portion has an arcuate outer peripheral surface having a predetermined length along an insertion direction of the gas plug body. 3. The buried type gas plug according to claim 1, wherein the guide portion has a substantially semicircular cross section projecting downward from the gas plug body. 4. The embedded gas plug according to claim 3 , wherein a top surface of the guide portion is positioned horizontally. In buried-type gas valve according to any one of claims 1 to 4, wherein the guide portion is buried type gas tap which is detachable from the gas valve body.

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