JP2895451B2 - Wall-mounted gas tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a safety valve incorporated in a plug (hose end), and an overflow prevention valve (fuse) incorporated in a gas flow path upstream of the safety valve and leading to the plug. And a wall-embedded gas stopper.

[0002]

2. Description of the Related Art A wall-embedded gas plug in which a double seal type safety valve is incorporated in a plug and an overflow prevention valve is incorporated in a gas flow passage is disclosed in Japanese Patent Publication No. Hei 8-10031. Those are known.

In this known gas plug, the safety valve is opened by a push rod on the socket side when the socket is mounted on the plug, and when the socket is removed from the plug or when the socket is released, the safety valve is actuated by a spring. It is designed to close. Further, the overflow prevention valve operates by a differential pressure to stop the gas when a gas having a predetermined flow rate or more flows through the overflow prevention valve due to disconnection of a gas hose or the like.

[0004]

The gas stopper having the above structure is effective in performing double sealing with a safety valve and ensuring safety when the gas hose is cut with a valve for preventing overflow. However, there are the following problems. In order to incorporate the safety valve in the plug, the plug needs to have a safety valve installation space, a safety valve movable space, and a spring installation space therein. For this reason, the length (projection amount) of the plug becomes long.

On the other hand, in the case of a current house, particularly in an apartment house, the gap between the floor and the back of the wall tends to be smaller and smaller. There is a problem that it cannot fit. Therefore, flattening (thinning) of the gas stopper is required. SUMMARY OF THE INVENTION It is an object of the present invention to provide a wall-embedded gas plug incorporating a safety valve and an overflow prevention valve which can be accommodated in increasingly smaller floors and clearances behind walls.

[0006]

The structure of the wall-embedded gas stopper according to the present invention is as follows. A gas inflow passage that is vertically raised from a gas pipe connection port is bent at right angles to form a gas outflow passage, and a gas stopper body formed by forming a plug in the gas outflow passage; and the gas outflow passage. In a wall-embedded gas plug comprising a double-sealed safety valve incorporated in a plug and an overflow prevention valve incorporated in the gas inflow passage, a gas stopper main body portion corresponding to the base of the plug By forming a depression here by making the shape like crushed, the upper end portion of the gas inflow path is formed flat by the formation of this depression, the structure of the safety valve, the valve body and the valve body holder Divided into two parts, the valve body side,
It is composed of a valve portion and a hollow valve shaft protruding backward from this valve portion, and the valve body holder side holds the valve body by receiving the valve shaft of the valve body into a horizontal shaft hole provided at the center. A valve body spring that pushes the valve body toward the valve seat is incorporated in the valve shaft, and a spring chamber is formed on the rear surface of the valve body holder so as to surround the outside of the shaft hole. The safety valve is incorporated in the spring chamber, and the rear end of the safety valve spring is brought into contact with the end wall formed in the back of the gas outflow passage so as to push out the safety valve toward the safety valve seat.
At the upper end of the gas inflow passage, the leading end faces the gas outflow passage, and when the safety valve is closed, the upward movement is suppressed. A reset mechanism for allowing operation of the check valve and incorporating a reset mechanism for resetting the check valve when the safety valve returns from open to closed once the check valve has been activated. Built-in gas tap.

[0007]

When the socket (gas hose) is not attached to the plug, the safety valve is closed and the overflow prevention valve is open. When the socket is attached to the plug, the tip of the push rod on the socket side abuts against the front of the valve body on the safety valve side, and the valve holder (safety valve) is pushed together with this valve body against the holder spring, and the valve is pressed. Open body and valve holder. As a result, the gas flows in the order of gas pipe → gas inflow path → overflow prevention valve → gas outflow path → plug → socket → gas hose → gas appliance. At this time, the reset mechanism is raised by the force of the spring and allows the overflow prevention valve to operate. If a gas having a predetermined flow rate or more flows in the gas flow path in this state, the overflow prevention valve operates to stop the gas.

[0008] Since the overflow prevention valve operates by the differential pressure, once the gas is stopped by operating once, it does not return to the original position (open position) as it is. There is. This reset is performed by removing the socket from the plug. In other words, when the socket is removed from the plug, the safety valve that has been pushed in moves forward by the force of the safety valve spring and stops gas in the plug. When the safety valve advances, the reset mechanism operates to reset the overflow prevention valve.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Gas plugs in which the present invention can be implemented are both wall-mounted and floor-mounted. However, the wall-embedded and floor-embedded gas plugs have exactly the same structure, with the plug facing in the horizontal direction when embedded in the wall and facing upward when embedded in the floor. Only. Therefore, in this specification, the term "wall-embedded gas stopper" is used, including the floor-embedded gas stopper.

The gas stopper main body has a gas pipe connection port formed in a lower portion, and a gas inflow path which is vertically formed from the gas pipe connection port therein, and a gas which is formed such that an upper end of the gas inflow path is directed at right angles. Forming a gas flow path consisting of an outflow path,
The front side corresponding to the upper portion of the gas inflow passage is crushed to form a depression, and the upper portion of the gas inflow passage is formed flat. In addition, a plug (hose end) is attached to the gas outlet path of the gas plug body.

The safety valve is incorporated between the inner wall and the safety valve seat formed in the plug in the gas outflow passage, and is pushed out by a safety valve spring when there is no load, and is in close contact with the safety valve seat. . The safety valve comprises two parts, a valve element which is in close contact with the safety valve seat, and a valve element holder which can hold the valve element and seal the peripheral surface of the valve element. In order to reduce the length of the body holder as much as possible, the valve shaft formed on the rear surface of the valve body is made hollow, and a valve body spring is incorporated in this hollow, and the front surface of the valve body holder is provided with the aforementioned A valve hole is formed in the shaft hole into which the valve shaft is inserted, and the valve body is pushed forward in the shaft hole by the valve body spring, that is, toward the safety valve seat side. A spring chamber is formed on the rear surface of the valve element holder so as to surround the outside of the shaft hole. The safety valve spring is incorporated in the spring chamber, and the rear end of the safety valve spring is the innermost wall of the gas outflow passage. And this wall receives the reaction force of the safety valve spring.

[0012] The overflow prevention valve is incorporated in the gas inflow path, and between the overflow prevention valve and the safety valve,
A reset mechanism is incorporated. The reset mechanism resets the overflow prevention valve when the safety valve advances from the retracted position, that is, when the socket is removed from the plug.

[0013]

Embodiment 1 This embodiment will be described with reference to FIGS. Reference numeral 1 denotes a wall-embedded gas plug, in which a gas plug main body and the like are incorporated, and a box is configured so that it can be mounted in a wall. The lid. Reference numeral 4 denotes a gas plug main body having a connection port 5 for a gas pipe (flexible pipe) A formed at a lower portion, and a plug 6 attached to the front side. Reference numeral 7 denotes a gas flow path. It comprises an inlet 8 and a gas outlet 9.

Reference numeral 10 denotes a socket release knob. When the knob 10 is depressed, the release member 11 rotates, and the push-up portion 12 pushes up the release ring 37 of the socket 35 so that the socket 35 can be removed from the plug 6. it can. 1
Reference numeral 3 denotes a flat portion formed immediately before the gas inflow passage 8 intersects the gas outflow passage 9 at a right angle. And a reset mechanism 2 to be described later.
4 as a built-in space. or,
The depression 4a is located at the base of the plug 6, and the depression 4a
By receiving the release ring 37 on the socket 35 side in a, the projecting of the plug 6 is minimized.

Numeral 14 denotes a safety valve incorporated in the plug 6. As shown in FIG. 8, the safety valve 14 has a valve body 15 having a hollow valve shaft 16 protruding from the rear surface,
The valve shaft 15 is received in a shaft hole 18 provided on the front side to hold the valve body 15, and a spring chamber 19 is formed on the rear surface so as to surround the shaft hole 18.
b comprises a valve body holder 17 which is configured to contact and seal the inner peripheral surface 6b in the plug 6, and the safety valve 14 is provided with a safety valve seat 6a in the plug 6 and a gas outflow passage 9
(See FIGS. 3 and 4).

Reference numeral 20 denotes a valve spring incorporated in the hollow portion 16a of the valve body 15, and reference numeral 21 denotes a safety valve spring incorporated between the spring chamber 19 of the valve holder 17 and the wall 9a. Reference numeral 22 denotes an overflow prevention valve incorporated in the gas inflow path 8, and the overflow prevention valve 22
It is a known device that operates by a differential pressure acting before and after a valve when a gas having a flow rate equal to or more than a certain flow rate is in close contact with a valve seat. Reference numeral 23 denotes a reset pin projecting from the overflow prevention valve 22. When the overflow prevention valve 22 operates, the amount of projection of the reset pin 23 increases.
By pressing, the valve returns to the original position.

Reference numeral 24 denotes a reset mechanism. As shown in FIGS. 5 to 7 and 9, the reset mechanism 24 includes a reset member 25 slidable up and down in the flat portion 13, and a reset member 25. And a reset piece 26 attached to the lower end of the valve 25. The tip of the reset piece 26 is located in front of (above) the reset pin 23 of the overflow prevention valve 22.

FIG. 9 is an explanatory view showing the details of the reset mechanism 24.
7 and a stopper portion 28, and a reset piece 2
6, a fixing groove 30 for receiving and fixing the root 29 of the reset member 26 is formed. The root 29 of the reset piece 26 is sandwiched in the fixing groove 30. 26 is fixed,
This structure is one of the best means for incorporating the reset mechanism 24 in the gas flow path 7 including the narrow flat portion 13.

Reference numeral 33 denotes a slide guide formed on the reset member 25. The slide guide 33 is engaged with a guide rib 33a protruding from the flat portion 13 of the gas inflow passage 8 to move the reset member 25 up and down. invite. 34
Is a reset spring incorporated between the lower end of the reset member 25 and a spring receiver 8a formed on the wall of the gas inflow passage 8 to push the reset member 25 upward.

FIG. 10 shows an example of assembling the reset mechanism 24. The gas stopper body 4 before the plug 6 is mounted is connected to the reset member 2 through the mounting opening 4b of the plug 6.
5 and the reset piece 26 are pulled in with the thread 38 (A), the slide guide 33 of the reset member 25 is engaged with the guide rib 33a (B), and further pulled in (C).
When the reset piece 26 comes under 3, the pull-in is stopped, and the reset piece 26 is raised and fixed at 90 °, and then the reset spring 34 is assembled between the lower end of the reset member 25 and the spring receiver 8 a ( D). However,
In (D), the position of the reset spring 34 is being assembled.

The operation of the above embodiment will now be described. In a state where the socket is not mounted on the plug 6 (FIG. 3), the safety valve 14 is closed and the overflow prevention valve 22 is open. In this state, as shown in FIGS. 2 and 4, when the socket 35 is mounted on the plug 6, the push rod 36 of the socket 35 pushes the safety valve 14 against the safety valve spring 21, and the safety valve 14 (the safety valve seat 6 a). ), The inner peripheral surface 6b is opened. At this time, the engaging edge 17 a of the valve element holder 17 of the safety valve 14 escapes from the stopper 28 of the reset member 25. Therefore, the reset member 25 is raised by the reset spring 34, and the reset piece 26 is separated from the reset pin 23 of the overflow prevention valve 22. When the socket is mounted on the plug 6, the release ring 37 is recessed 4a.
(See FIGS. 2 and 4).

In this state, the gas flows toward the socket 35 through the gas passage 7. When the socket 35 is removed from the plug 6, the safety valve 14 is pushed out by the safety spring 21, and the valve body 15 is moved to the safety valve seat 6.
a. In this process, the engaging edge 17a of the valve element holder 17 comes into contact with the inclined surface 27 of the reset member 25, and a downward force acts on the reset member 25 by the action of the inclined surface 27, so that the reset member 25 is reset by the reset spring 34. Descends against At this time, when the overflow prevention valve 22 has been operated, the reset pin 23 is pushed by the reset piece 26 to reset the overflow prevention valve 22.

[0023]

Embodiment 2 FIGS. 11 to 1 show an embodiment of the reset mechanism 24.
3 is shown. This reset mechanism 24 includes a reset member 2
The inclined surface 27 'of 5' is formed in the direction opposite to that of the first embodiment, and the reset piece 26 'is rotatably mounted on a support shaft 39, and a socket 35 is mounted as shown in FIG. When the reset member 25 'is lowered, the reset piece 2
11 rotates in the clockwise direction about the support shaft 39 as shown in FIGS. 11 and 12, and when the socket 35 is removed, the reset piece 26 'rotates in the opposite direction to the previous direction by the force of the reset spring 34. At the same time, the reset member 25 'is raised to push the reset pin 23 of the overflow prevention valve 22. 33 'is a slide guide,
33a 'is a guide rib.

[0024]

Third Embodiment Another embodiment of the reset mechanism 24 is shown in FIGS.
As shown in FIG. The reset mechanism 24 incorporates a reset member 25 ″ having a ring 25a shown in FIG. 16 and an engagement edge 17a on the safety valve 14 side (valve element holder 17).
The operation of the reset member 25 "is the same as that of the first embodiment. However, a reset spring 34 is incorporated on the opposite side to bias the reset member 25" downward. In the figure, 27 "is an inclined surface, and 28" is a stopper portion.

[0025]

According to the present invention, the following effects are obtained by adopting the above-described configuration. a. Since the safety valve spring for operating the safety valve is incorporated in the spring chamber of the valve body holder, the space for installing the spring can be reduced as compared with the conventional gas stopper, because the safety valve spring is incorporated in the spring chamber. As a result, the amount of protrusion of the plug is reduced, and the gas stopper can be flattened as much as possible.

B. Since a recess is formed in the gas plug body on the front side corresponding to the base of the plug, the release ring can be received in the recess when the socket is mounted. As a result, the mounting space for the socket is ensured by the provision of the depression in the gas stopper main body, so that the amount of protrusion of the socket from the wall surface can be reduced.

C. Since the reset mechanism is incorporated between the safety valve and the overflow prevention valve, and the reset mechanism is incorporated in a flat portion in the gas flow path, the assembly structure of the reset mechanism can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view of a gas stopper.

FIG. 2 is a side view of a gas stopper.

FIG. 3 is a side view of a gas stopper without a socket.

FIG. 4 is a side view of a gas stopper equipped with a socket.

FIG. 5 is a sectional view taken along line AA ′.

FIG. 6 is a sectional view taken along line BB ′.

FIG. 7 is a sectional view taken along line CC ′.

FIG. 8 is an exploded perspective view of the safety valve.

FIG. 9 is an explanatory diagram of a reset mechanism.

FIG. 10 is an explanatory diagram when a reset mechanism is incorporated.

FIG. 11 is an explanatory view of a gas stopper incorporating the reset mechanism described in the second embodiment.

FIG. 12 is an explanatory view showing a state in which a socket is mounted in a gas stopper incorporating the reset mechanism described in the second embodiment.

FIG. 13 is an explanatory diagram of a reset member in the reset mechanism described in the second embodiment.

FIG. 14 is an explanatory view of a gas stopper incorporating the reset mechanism described in the third embodiment.

FIG. 15 is an explanatory view showing a state in which a socket is mounted in a gas stopper incorporating the reset mechanism described in the third embodiment.

FIG. 16 is an explanatory diagram of a reset member in the reset mechanism described in the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 2 Decorative plate 3 Lid 4 Gas plug body 4a Depression 4b Mounting port 5 Connection port 6 Plug 6a Safety valve seat 6b Inner peripheral surface 7 Gas flow path 8 Gas inflow path 8a Spring receiver 9 Gas outflow path 9a Wall 10 Socket release knob 11 Release member 12 Push-up part 13 Flat part 14 Safety valve 15 Valve body 16 Valve shaft 16a Hollow part 17 Valve body holder 17a Engagement edge 17b Circumferential surface 18 Shaft hole 19 Spring chamber 20 Valve body spring 21 Safety valve spring 22 Overflow prevention valve 23 Reset pin 24 reset mechanism 25 reset member 25a ring 26 reset piece 27 inclined surface 28 stopper portion 29 root 30 fixing groove 31 protrusion 32 hole 33 slide guide 33a guide rib 34 reset spring 35 socket 36 push rod 37 release ring 38 thread 39 spindle

Claims (1)

(57) [Claims] 1. A gas stopper main body comprising: a gas inflow passage which rises vertically from a gas pipe connection port is bent at right angles to form a gas outflow passage; and a plug is formed in the gas outflow passage. A wall-embedded gas plug comprising the gas outflow passage and a safety valve of a double seal system incorporated in a plug, and an overflow prevention valve incorporated in the gas inflow passage, which corresponds to a base of the plug. The gas stopper body portion is formed into a shape that is crushed, thereby forming a depression therein, and by forming the depression, the upper end portion of the gas inflow path is formed flat. And the valve body holder, the valve body side is composed of a valve portion and a hollow valve shaft protruding rearward from this valve portion, and the valve body holder side has the valve shaft of the valve body in the center. Insert the valve into the horizontal shaft hole A valve body spring that pushes a valve body toward a valve seat is incorporated in the valve shaft; a spring chamber is provided on a rear surface of the valve body holder so as to surround the outside of the shaft hole. A safety valve spring is incorporated in the spring chamber, and the rear end of the safety valve spring is brought into contact with the abutting wall surface formed in the back of the gas outflow passage to push the safety valve toward the safety valve seat. At the upper end of the gas inflow passage, the leading end faces the gas outflow passage, and when the safety valve is closed, the upward movement is suppressed. When the safety valve is open, the upward movement is caused by the reset spring. Allows the operation of the outflow prevention valve, and once the safety valve has returned from open to closed once the overflow prevention valve has been activated, it will be lowered to prevent overflow. It incorporates a reset mechanism for resetting the valve, wall implantable gas valve according to claim.