JPH04133096U - gas valve - Google Patents

Abstract

(57) [Summary] [Purpose] Gas valves with a direct-acting valve housed in the plug that connects to one-touch coupling type gas sockets, especially gas valves with a built-in overflow prevention valve. Aim to downsize the stopper body. [Structure] An overflow prevention valve (3) is arranged parallel to the moving direction of the direct-acting valve (4) loaded in the plug (2), and the direct-acting valve (4) closes. Accordingly, the reset rod (32) protruding from the downstream end of the overflow prevention valve (3) is pushed upstream to enter the reset state.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a direct-acting device inside the plug that connects the one-touch coupling type socket. Gas valves containing valves, especially gas valves incorporating overflow prevention valves. This is intended to reduce the size of the stopper body.

0002

[Prior art and issues]

This type of gas plug is disclosed, for example, in Japanese Utility Model Application No. 3-7591. As shown in Figures 4 and 5, the gas valve body (1) has a gas inlet (10) at the upstream end. An L-shaped gas flow path (12) is formed through the tip of the plug (2) at the downstream end. The upstream side of the L-shaped bent part of the gas flow path (12) is provided with a gas leakage prevention valve. An overflow prevention valve (3) is installed.

0003 The overflow prevention valve (3) includes a ball valve (31) loaded in a cylindrical body (30) and a closed valve (31). A reset function that pushes the ball valve (31) in the valve state toward the upstream side to reset it. It consists of a rod (32). On the other hand, on the downstream side of the L-shaped bent part of the gas flow path (12), there is a groove that slides along the flow path. A direct-acting valve (4) is loaded, and the direct-acting valve (4) is mounted on the valve seat at the tip of the plug (2). The lift valve (47) that is brought into contact with the port (21) and the inner peripheral surface of the plug are slid in an airtight manner. It consists of a sliding valve (43). The direct operated valve (4) is operated by a spring (41). The valve is pushed downstream and maintained in a closed state. In addition, the above direct operated valve (4) The upstream end of the sliding valve (43) protrudes toward the overflow prevention valve (3). A protrusion (42) is provided.

0004 In this case, in the state shown in Figure 5, the socket (6) connected to the plug (2) When the valve is pulled out, the direct-acting valve (4) moves downstream due to the biasing force of the spring (41), and the Inside, a protrusion (42) located at the upstream end of the direct-acting valve (4) prevents excessive outflow. Temporarily push in the reset lever (32) of the valve (3). Then, as shown by the imaginary line in Figure 4, When the ball valve (31) is in the closed state with the valve seat (33) blocked (if the valve is closed on the downstream side), If a leak occurs), the ball valve (31) is pushed by the reset rod (32). and open the valve. As a result, the overflow prevention valve (3) is placed in a reset state.

[0005] However, with the conventional type described above, it is difficult to downsize the gas valve main body (1). There was a problem. In the above conventional type, the overflow prevention valve ( This is because the axis line 3) is configured to be at a right angle. In other words, the gas valve body ( It is only necessary to form a long and narrow space inside 1) that allows the movement of the direct operated valve (4). Instead, an overflow prevention valve ( 3) It is necessary to form a space of a predetermined length to accommodate the gas valve. The body (1) extends both in the direction of movement of the direct-acting valve (4) and in the axial direction of the overflow prevention valve (3). This makes it impossible to achieve overall miniaturization.

[0006] The present invention has been developed in view of the above points, and is based on the concept of ``a plug for connecting the socket (6)''. a plug (2), which is loaded movably within the plug (2) in its axial direction; A direct-acting valve (4) that is biased toward the plug tip side by a spring (41) and held in a closed state; , an overflow prevention valve (3) that is reset in conjunction with the operation of the direct-acting valve (4). The direction of movement of the direct-acting valve (4) and the axis of the overflow prevention valve (3) To reduce the size of the gas valve main body (1) by making the line directions parallel to each other. The task is to

[0007]

[Technical means]

The technical means of the present invention to solve the above problem is to Both are placed close together so that the axes of the overflow prevention valve (3) are parallel, and , a circuit that comes into contact with a reset rod (32) protruding from the downstream end of the overflow prevention valve (3). A rotating cam (5) is provided, and an interlocking mechanism (7) is provided between the rotating cam (5) and the direct-acting valve (4). is arranged so that the rotary cam (5) rotates in conjunction with the movement of the direct-acting valve (4). Furthermore, when the direct-acting valve (4) is in the closed state where it is located on the plug tip side, the rotary cam (5) is Turn the reset lever (32) of the overflow prevention valve (3) into the pressed state. This means that the orientation of the rotary cam (5) has been set.

[0008]

[Effect]

The above technical means works as follows. In the gas valve of the present invention, the direction of movement of the direct-acting valve (4) and the axis of the overflow prevention valve (3) are flat. Since these two are placed close together in a row, they are at right angles. The entire structure is elongated in one direction compared to the previously mentioned conventional ones. Ru.

[0009] Next, we will describe the operation of the overflow prevention valve (3) when the socket (6) is attached or detached. Ru. When the socket (6) is connected to the plug (2), like the conventional one described above, Push the direct-acting valve (4) to the most upstream position using the opening/closing shaft (61) in the center of the socket (6). The valve is open. In this valve open state, the rotating cam (5) is the reset lever of the overflow prevention valve (3). (32) is in a non-reset state without being pressed. Direct operated valve (4) is the plug destination The rotating cam (5) pushes the reset rod (32) when the valve is closed at the end. Contrary to this, when the direct-acting valve (4) is in the above-mentioned open position, The reset rod (32) is not pushed in and the overflow prevention valve (3) remains in the non-reset state. It will be done.

0010 Now, if a gas leak occurs due to a gas rubber pipe coming off on the downstream side, overflow prevention The stop valve (3) operates in the same way as the conventional one described above, and the gas supply is cut off. . Next, when the socket (6) is pulled out, the spring (41) is attached as in the conventional socket. The force causes the direct-acting valve (4) to move straight toward the downstream (tip side of the plug (2)) closing position. move in a specific manner. Then, the operation of the direct-acting valve (4) is controlled by the rotary valve via the interlocking mechanism (7). (5) and rotates it. Then, it faces the rotating cam (5). The reset rod (32) of the overflow prevention valve (3) is pushed in by the rotating cam (5) to prevent overflow. The outflow prevention valve (3) enters the reset state.

[0011]

【effect】

The present invention has the following unique effects. Adjust this so that the direction of movement of the direct operated valve (4) and the axis of the overflow prevention valve (3) are parallel. Since they are arranged close to each other, the gas valve main body can be made smaller compared to the conventional ones mentioned above.

0012

【Example】

Next, the embodiments of the present invention described above will be described in detail with reference to the drawings. As shown in Figure 1, the gas valve main body (1) is generally formed into a cylindrical shape as a whole. a gas inlet (10) formed at one end and a plug (2) formed at the other end. The gas outlet (11) faces in the opposite direction. Then, align it with the central axis of the plug (2). An overflow prevention valve (3) is installed in the gas flow path (12) in a similar manner.

[0013] Inside the plug (2) is a cylindrical lift valve (47) that moves in the axial direction of the plug (2). A direct-acting valve (4) consisting of a sliding valve (43) connected to its upstream end is loaded. , the sliding valve (43) is configured to slide in its accommodation portion while maintaining an airtight outer circumference. It has become. The slide valve (43) and the head (40) at the tip of the lift valve (47) ) A weak spring (45) is interposed between the sliding valve (43) and the upper part of the sliding valve (43). A recess (46) formed on the downstream end face has a recess pushed downstream by a spring (41). A reset body (51) is fitted into the upstream end of the reset body (51). A projection (52) is provided that projects downward.

[0014] The protrusion (52) is arranged close to each other parallel to the direction of movement of the direct-acting valve (4). Rotate the rotary cam (5) disposed on the opposite side of the downstream end of the outflow prevention valve (3). It has become so. That is, the rotating cam (5) is rotatably supported by the shaft (54), and the rotary cam (5) is rotatably supported by the shaft (54). The protrusion (52) is attached to the engagement piece (55) (55) that protrudes from the outer periphery of the rotary cam (5). The engagement causes the linear motion of the direct-acting valve (4) to become the rotational motion of the rotary cam (5). It is meant to be converted. In this embodiment, the above protrusion (5 2) and an engagement piece (51) protruding from the outer periphery of the rotating cam (5). 55) (55) etc. correspond to the interlocking mechanism (7) described in the technical means section already mentioned. .

[0015] Also, on the outer periphery of the rotating cam (5), a valve is provided that protrudes toward the downstream end from the overflow prevention valve (3). The reset rod (32) is pressed by the spring (35), and the direct-acting valve (4) is located at the most downstream position. When the reset lever (32) is in the position shown in Figure 1, the reset lever (32) is It is configured so that it can be pushed in. In addition, the ball valve ( 37) is kept in an open state by being biased upstream by a weak spring (38).

[0016] In this case, gas is stored inside the cylindrical casing (K) as shown by the imaginary stopper in Figure 1. Load the plug body (1), bury the casing (K) in the wall (B), and start the installation work. do. Then, the gas cock body ( When a flexible gas pipe (not shown) is connected to the gas inlet (10) in 1), the gas valve can be installed. The work is completed.

[0017] Now, when the socket (6) is connected, as shown in FIG. The opening/closing shaft (61) of 6) is in a state where the direct-acting valve (4) is pushed to the upstream side. The protrusion (52) of the reset body (51) arranged at the upstream end of the direct-acting valve (4) rotates. It engages with engagement pieces (55) (55) on the outer periphery of the cam (5). Also, in this state , the rotating cam (5) does not push the reset rod (32) of the overflow prevention valve (3). is in a state.

[0018] If the gas rubber pipe becomes disconnected on the downstream side in this state, the ball valve (31) will Due to the sudden increase in the gas flow that occurs, the gas is forced downstream against the spring (38). It fits into the valve seat opening (33) (as shown by the imaginary line in Figure 2) to shut off the gas.

[0019] When the socket (6) is pulled out in the gas cutoff state, the lift valve (47) and the slide valve ( The direct operated valve (4) consisting of 43) is pushed together with the reset body (51) by a spring (41). and move straight downstream. Then, the engaging pieces (55) (5) on the outer periphery of the rotating cam (5) 5) is engaged with the protrusion (52) of the reset body (51) that moves linearly. As a result, the rotary cam (5) rotates around the shaft (54), and the outside of the rotary cam (5) rotates around the shaft (54). The reset rod (32) of the overflow prevention valve (3) is pushed upstream by the The ball valve (31) in the closed state is forced to escape from the valve seat opening (33) and returns to its initial state. Become a state. Also, the direct-acting valve (4) inside the plug (2) is moved to the most downstream part by a spring (41). The initial state is that the socket (6) in Figure 1 is not connected as a whole. to return to.

[0020] The second embodiment shown in FIG. 3 has a swing lever in place of the above-mentioned rotating cam (5). (8), and the input end of the swing lever (8) is the upstream end of the direct-acting valve (4). It is engaged with the reset body (51) of the section. Also, the output end of the swing lever (8) The tip of the swing is in contact with the tip of the reset rod (32) of the overflow prevention valve (3). . In this case, when the connected socket (6) is removed, it is the same as the one in Figure 1 described above. In this manner, the direct-acting valve (4) moves linearly toward the tip of the plug (2). Then, reset Due to the engagement with the body (51), the swing lever (8) swings about its support shaft (81). The swinging end of the swinging lever (8), which is the output end, resets the overflow prevention valve (3). Push the lever (32) upstream to reset it.

[Brief explanation of drawings]

[Figure 1] Cross-sectional view of an embodiment of the present invention

[Figure 2] Cross-sectional view with the opening/closing shaft (61) connected

[Fig. 3] Explanatory diagram of the second embodiment

[Fig. 4] Explanatory diagram of conventional example

[Fig. 5] Explanatory diagram of conventional example

[Explanation of sign]

(1)...Gas valve body (2)...Plug (6)...Socket

Claims (2)

[Scope of utility model registration request] [Claim 1] Plug (2) for connecting socket (6)
a direct-acting valve (4) which is loaded into the plug (2) so as to be able to move in its axial direction and which is biased toward the plug tip side by a spring (41) and held in a closed state; In a gas valve equipped with an overflow prevention valve (3) that is reset in conjunction with the operation of the direct-acting valve (4), the moving direction of the direct-acting valve (4) and the axis of the overflow prevention valve (3) are parallel to each other. In addition, a rotating cam (5) is provided that comes into contact with a reset rod (32) protruding from the downstream end of the overflow prevention valve (3), and the rotating cam (5) and An interlocking mechanism (7) is interposed between the direct operated valve (4) and the direct operated valve (4).
The rotary cam (5) is configured to rotate in conjunction with the movement of the overflow prevention valve ( 3) A gas valve in which the rotating cam (5) is arranged in such a manner that the reset rod (32) is in a pushed-in state. [Claim 2] Plug (2) for connecting socket (6)
a direct-acting valve (4) which is loaded into the plug (2) so as to be able to move in its axial direction and which is biased toward the plug tip side by a spring (41) and held in a closed state; In a gas valve equipped with an overflow prevention valve (3) that is reset in conjunction with the operation of the direct-acting valve (4), the moving direction of the direct-acting valve (4) and the axis of the overflow prevention valve (3) are parallel to each other. In addition, a swinging lever (8) whose output end abuts a reset rod (32) protruding from the downstream end of the overflow prevention valve (3) is provided to prevent the swinging. The input end of the lever (8) is connected to the direct-acting valve side to interlock the two, and the swinging lever (8) prevents overflow when the direct-acting valve (4) is in the closed state where it is located on the plug tip side. A gas valve whose reset lever (32) of a prevention valve (3) is in a pushed-in state.