JP2012207787A - Gas cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cock, in which damage of a reset means due to contact between the reset means and another member can be prevented.SOLUTION: The reset means includes: an urging means F1 for urging a moving member R4 movable in the axial direction of a gas cock body 2 to an operation side where reset operation is performed; and a magnetic force action means for making magnetic force for an operation release side on an opposite side to an operation side act to the moving member 4 as a slide valve G moves from a closing position to an opening position.

Description

  The present invention provides a cylindrical gas stopper body having a gas flow passage formed therein, a slide valve movable in the axial direction of the gas stopper body between a closed position and an open position, An overflow prevention valve disposed upstream of the slide valve in the gas flow direction, and disposed between the slide valve and the overflow prevention valve in the gas flow direction, the closed position and the open position And a reset means for performing a reset operation for resetting the overflow prevention valve by the movement of the slide valve between the gas valve and the gas stopper.

A gas outlet as a known gas plug is connected to a gas pipe that circulates gas from the upstream side, and can be connected to a gas appliance or the like on the downstream side so that a gas connector for guiding gas can be attached. ing. When a gas connector is mounted on the gas stopper, the gas stopper is pressed by the pressing portion of the gas connector to open the gas flow passage, and when the gas connector is released, the pressing portion A slide valve that releases the pressure and closes the gas flow path is provided, and even if the gas connector is removed from the gas stopper, it is possible to prevent gas from leaking from the gas stopper. It is configured as follows.
Furthermore, in the gas stopper, for example, when the gas pipe connecting the gas connector and the gas appliance is broken, a gas flow rate higher than a certain value in the gas flow passage is avoided in order to avoid a situation where the gas leaks from the damaged portion. An excessive outflow prevention valve is provided for blocking the gas flow passage when the flow pressure is generated. Further, there is provided reset means for performing a reset operation for releasing the blockage of the gas flow passage by the overflow prevention valve by mounting the gas connector on the gas stopper body.
The reset means is swingable around an axial center along the flow path width direction of the gas flow passage and includes two swing members along the axial direction of the gas flow passage. As the gas flow passage is moved from the closed position to the open position, the slide valve is pressed and the upstream swing member is swung by the swing of the downstream swing member. By being moved, the other-side rocking member is configured to release the blockage of the gas flow path by the overflow prevention valve (see Patent Document 1).

  On the other hand, as a gas stopper as described above, regardless of the attachment of the gas connector to the gas stopper main body, the rotary valve, which is an opening / closing valve, is rotated to open and close in accordance with the rotation operation of the operation portion such as the operation knob. A so-called rotary gas stopper (see, for example, Patent Document 2) that performs gas supply and stop switching is known. In addition, as an open / close valve that opens and closes between a gas inflow path and a gas outflow path that is built in a gas stove or the like and switches between supply and stop of gas, a slide that is an open / close valve in accordance with a pressing operation on an operation unit such as an operation button A so-called push-push type opening / closing valve (see, for example, Patent Document 3) that opens and closes by sliding the valve is known, and the gas stopper is also configured as a push-push type in the same manner as this opening / closing valve. It is hoped that.

Noto 2513850 Japanese Examined Patent Publication No. 02-021660 Japanese Patent Laid-Open No. 02-154918

However, in the technique disclosed in Patent Document 1, the reset means includes two members, a downstream swing member and an upstream swing member that is swung by the swing of the downstream swing member. Therefore, it is necessary to provide two rocking members in the gas plug main body, and there is a problem that the structure becomes complicated.
Furthermore, when releasing the shutoff of the gas flow passage by the overflow prevention valve, a slide valve that moves from the closed position to the open position at the pressing portion of the gas connector by the user attaching the gas connector to the gas plug body. And the rocking member on the downstream side come into contact with each other. For this reason, for example, when the user attaches the gas connector to the gas plug body vigorously, the slide valve also vigorously comes into contact with the downstream rocking member. There was a risk of damage.

  The present invention has been made in view of the above problems, and its purpose is a relatively simple configuration, and when resetting the overflow prevention valve, avoid contact with other members, The object is to provide a gas stopper equipped with reset means capable of preventing the damage.

To achieve the above object, the gas stopper of the present invention comprises:
A cylindrical gas stopper body having a gas flow passage formed therein, a slide valve movable in the axial direction of the gas stopper body between a closed position and an open position, and a gas flow direction of the gas flow passage An overflow prevention valve disposed upstream of the slide valve, and disposed between the slide valve and the overflow prevention valve in the gas flow direction, between the closed position and the open position. A gas stopper provided with reset means for performing a reset operation to reset the overflow prevention valve by movement of the slide valve,
The reset means biases a moving member that is movable in the axial direction of the gas plug main body to either the operation side for performing the reset operation or the operation release side opposite to the operation side. And magnetic force application means for causing the moving member to act on the other side of the operation side or the operation release side as the slide valve moves between the closed position and the open position. There is in point.
Here, the correspondence between either one and the other is the relationship between the operation side (one) and the operation release side (the other) (the relationship shown in the first embodiment described later) or the operation side with respect to the operation release side (one). This means the (other) relationship (relationship shown in the second embodiment described later).

According to the above characteristic configuration, when the moving member is urged to the operation side for performing the reset operation by the urging member, the magnetic force is applied to the operation release side opposite to the operation side by the magnetic force application means, When the moving member is urged to the operation release side by the urging member, the reset operation can be realized by applying a magnetic force to the operating side of the moving member by the magnetic force applying means.
For example, as the slide valve moves between the closed position and the open position, the moving side that is biased to the operating side that performs the reset operation by the biasing member in the axial direction of the gas plug body The reset operation can be performed by applying a magnetic force to the operation release side opposite to the above. As described above, the reset operation can be performed by applying a magnetic force to the moving member toward the operation release side, and therefore can be executed in a non-contact state without directly contacting another member with the moving member. Thereby, in reset operation, damage to a reset means can be prevented.
Further, for example, with respect to the moving member that is urged to the operation releasing side by the urging member in the axial direction of the gas plug main body with the movement of the slide valve between the closed position and the open position, the operation releasing side It is also possible to perform a reset operation by applying a magnetic force to the operation side opposite to the above.
In addition, according to the said characteristic structure, since the member which moves within a gas flow path is only a moving member about a reset means, it can implement | achieve by a comparatively simple structure.
As described above, the reset means for resetting the overflow prevention valve can be realized with a relatively simple configuration, and when resetting the overflow prevention valve, contact between the moving member as the reset means and another member is performed. A gas stopper that can be avoided and can prevent damage to the reset means can be realized.

Further features of the gas stopper of the present invention are as follows:
The magnetic force acting means is composed of a first magnetic body provided on the slide valve and a second magnetic body provided on the moving member, and accompanying the movement of the slide valve from the closed position to the open position. The attractive point or the repulsive force as a magnetic force generated between the first magnetic body and the second magnetic body is applied to the moving member.

  According to the above characteristic configuration, the magnetic force acting means is composed of the first magnetic body provided on the slide valve and the second magnetic body provided on the moving member, and accompanying the movement of the slide valve from the closed position to the open position. Since the first magnetic body and the second magnetic body are provided so as to generate an attractive force or a repulsive force as a magnetic force, the gas plug has a relatively simple configuration and is not accompanied by electrical control. An attractive force due to a magnetic force can be generated between the moving member and the moving member semipermanently.

Further features of the gas stopper of the present invention are as follows:
The moving member has a guide surface along the inner wall of the gas flow path, and the guide member is slidably provided in a state along the inner wall.

  According to the above characteristic configuration, the moving member has a guide surface along the inner wall of the gas flow passage, and the guide surface is slidably provided along the inner wall. The moving member on which the urging force acts and the magnetic force acts on the operation release side can be stably moved along the inner wall of the gas flow passage.

Further features of the gas stopper of the present invention are as follows:
The biasing member is provided between the slide valve and the moving member, biases the moving member toward the operation side or the operation release side, and moves the slide valve from the open position to the closed position side. Alternatively, it is provided so as to be biased from the closed position toward the open position.

  According to the above characteristic configuration, the biasing member may generate a biasing force to the operation side or the operation release side to the moving member, and may also generate a biasing force to the closing side or the opening side to the slide valve. it can. Thereby, a structure can be simplified compared with the case where a biasing means is separately provided in a moving member and a slide valve.

Further features of the gas stopper of the present invention are as follows:
The gas flow passage is provided with the overflow prevention valve, the reset means, and the slide valve in order from the upstream side, and is provided in a straight line along the axial direction of the gas plug body.

  According to the above characteristic configuration, the gas flow passage is provided in a straight line along the axial direction of the gas plug main body while including all of the overflow prevention valve, the reset means, and the slide valve. However, the overflow prevention valve, the reset means, and the slide valve can be arranged in a straight line in a state adjacent to the axial direction of the gas plug body. Therefore, the positional relationship among the overflow prevention valve, the reset means, and the slide valve can be simplified, and the configuration of the reset means for resetting the overflow prevention valve using the movement of the slide valve can be further simplified. In addition to this, the reset operation by the reset means and the release of the reset operation can be appropriately performed. In addition, by making the gas plug body straight, it is possible to install the gas plug coaxially with the gas piping connected to the gas plug body, and to reduce the installation space. it can. Furthermore, when the gas plug main body is linear, the area of the opening formed in the wall can be reduced when the gas plug is installed in a form embedded in the wall or in a form penetrating the wall.

Further features of the gas stopper of the present invention are as follows:
The slide valve is located between the closed position and the open position as the gas connector is attached to and detached from the gas stopper body.

  That is, the gas plug according to the present invention is configured as a so-called gas outlet so that the slide valve moves between the closed position and the open position when the gas connector is attached to and detached from the gas plug body. it can.

Further features of the gas stopper of the present invention are as follows:
The slide valve is in a point that moves between the closed position and the open position in accordance with a pressing operation on the operation unit.

  As described above, the gas stopper of the present invention can be configured as a so-called push-push type gas cock so that the slide valve moves between the closed position and the open position in accordance with the pressing operation on the operation portion. .

It is sectional drawing which shows the state from which the gas connection tool was removed from the gas stopper main body. It is sectional drawing which shows the state with which the gas connection tool was mounted | worn with the gas stopper main body. It is sectional drawing which shows the operating state of the gas stopper of 1st Embodiment. It is a front view of a moving member. It is sectional drawing which shows another embodiment of the gas stopper of 1st Embodiment. Side sectional view which shows the state at the time of opening of the gas stopper of 2nd Embodiment The disassembled perspective view which shows the slide valve and operation mechanism part of the gas stopper of 2nd Embodiment Side sectional view which shows the state at the time of the action | operation of the excessive outflow prevention valve of the gas stopper of 2nd Embodiment Side sectional view which shows the state in the middle of closing operation of the gas stopper of 2nd Embodiment Side sectional view which shows the state at the time of closing of the gas stopper of 2nd Embodiment Explanatory drawing explaining the transition state of the position of the guide pin in the guide groove at the time of the capping operation | movement in 2nd Embodiment. Explanatory drawing explaining the transition state of the position of the guide pin in the guide groove at the time of opening operation in 2nd Embodiment

A gas outlet as a gas plug according to the present invention operates when a flow pressure with a gas flow rate of a certain level or more is generated in the gas flow passage 1 of the gas plug main body 2 to prevent the gas from flowing out. The reset means R for executing the reset operation for resetting the excessive outflow prevention valve H2 that prevents the gas flow can perform the reset operation without contact with the slide valve G.
Therefore, hereinafter, as a basic configuration of the gas plug, first, the configuration of the gas plug main body 2 and the gas connector 100 connected to the gas plug main body 2 will be described, and then the reset means R which is a characteristic configuration of the present invention will be described. To do.

<First Embodiment>
As shown in FIGS. 1 and 2, the gas stopper of this embodiment includes a cylindrical gas stopper body 2 in which a gas flow passage 1 is formed, and a gas connector 100 is connected to the gas stopper body 2. The gas is supplied to the gas appliance connected to the gas connector 100 by gas flow through the gas flow passage 1, and the gas connector 100 is removed from the gas plug body 2 to remove the gas connector 100. The gas distribution is stopped and the gas supply to the gas appliance is stopped. FIG. 1 shows a state where the gas connector 100 is removed from the gas plug body 2, and FIG. 2 shows a state where the gas connector 100 is attached to the gas stopper body 2.

  The gas plug main body 2 includes a slide valve G that can freely open and close the gas flow passage 1, and an overflow prevention valve H2 that prevents gas flow when the gas flow rate in the gas flow passage 1 exceeds a certain level. And a reset means R for performing a reset operation for resetting the excessive outflow prevention valve H2 when the gas connector 100 is detached from the gas plug body 2. Here, the reset operation is an operation of pressing the operated member H3 in the excessive outflow prevention valve H2 to the upstream side of the gas flow passage 1.

  The gas flow passage 1 has a circular cross section, and is provided in a straight line along the axial direction (X direction in FIGS. 1 and 2) of the gas plug body 2. The gas flow direction of the gas flow passage 1 is the same direction. The gas flow passage 1 includes a plurality of flow passage portions 1a to 1g whose flow passage diameters are changed, and prevents excessive outflow in order from the upstream side in the gas flow direction (the right side in the X direction in FIGS. 1 and 2). An overflow prevention mechanism H provided with a valve H2, a reset means R, and a slide valve G are provided. As a plurality of flow path parts, the first flow path part 1a, the second flow path part 1b, the third flow path part 1c, the fourth flow path part 1d, and the fifth flow path part 1e in order from the upstream side in the gas flow direction. The sixth flow path part 1f and the seventh flow path part 1g are provided. The first flow path part 1a is communicated with a gas inlet (not shown), and the second flow path part 1b is formed with a flow path diameter smaller than that of the first flow path part 1a. H is arranged. The third channel part 1c is formed with a channel diameter smaller than that of the second channel part 1b, and the reset means R is arranged. The fourth channel part 1d is formed with a channel diameter smaller than that of the third channel part 1c, and the fifth channel part 1e is formed with a channel diameter larger than that of the third channel part 1c. The sixth channel part 1f is formed with a channel diameter smaller than that of the fifth channel part 1e, and the seventh channel part 1g is inclined so that the channel diameter is smaller on the downstream side than on the upstream side. It is formed and communicates with a gas outlet 3 formed at the tip of the gas plug body 2.

The slide valve G includes a first valve body G1 capable of closing the sixth flow path portion 1f in the gas flow passage 1, and a second valve body G2 capable of closing the seventh flow path portion 1g in the gas flow passage 1. It has.
The first valve body G1 is provided so as to be movable along the axial direction of the gas plug main body 2 across the sixth flow path part 1f and the fifth flow path part 1e. The outer diameter of the upstream end portion of the first valve body G1 is the same as the flow passage diameter of the sixth flow passage portion 1f, and the valve seat portion on which the first valve body G1 is seated is the sixth flow passage portion 1f. It consists of an inner wall. The first valve body G1 is located at a closed position that closes the sixth flow path part 1f when moved to the sixth flow path part 1f, and an open position that allows gas flow when moved to the fifth flow path part 1e. Located in. The first valve body G1 is urged so as to return to the closed position by the first urging member F1, and when the gas connector 100 is detached from the gas plug body 2, the first valve body G1 is located at the closed position. Thus, the sixth flow path portion 1f is closed.

The second valve body G2 is provided so as to be movable along the axial direction of the gas plug body 2 across the sixth flow path part 1f and the seventh flow path part 1g. The outer diameter of the downstream end portion of the second valve body G2 is the same as the flow passage diameter of the inclined portion of the seventh flow passage portion 1g, and the valve seat on which the second valve body G2 is seated is the seventh flow passage. It is comprised in the inclination site | part of the site | part 1g. The second valve body G2 is located at a closed position that closes the seventh flow path part 1g when moved to the seventh flow path part 1g, and an open position that allows gas flow when moved to the sixth flow path part 1f. Located in. The second valve body G2 is urged so as to return to the closed position by the second urging member F2. When the gas connector 100 is detached from the gas plug body 2, the second valve body G2 is located at the closed position. The seventh flow path portion 1g is closed.
In this way, both the first valve body G1 and the second valve body G2 constituting the slide valve G are movable between the closed position and the open position along the axial direction of the gas plug body 2, and the gas The flow passage 1 is biased so as to return to the closed position.

The gas connector 100 that can be attached to and detached from the gas plug body 2 will be described. Since the gas connector 100 has a known configuration, a detailed description thereof will be omitted and will be briefly described.
In the gas connector 100, the positions of the protruding member 102, the locking ball 103, and the locking ball 103 that are biased forward by the first coil spring 101 (the right side in the X direction in FIGS. 1 and 2) are set in the radial direction. An inner diameter member 104 that is pressed against the front end of the gas stopper main body 2 and is retracted, and a rod-like pressing portion 105 that presses the slide valve G when the gas stopper main body 2 is mounted. It has.

  When the gas connector 100 is attached to the gas plug main body 2, as shown in FIG. 2, the distal end portion of the gas plug main body 2 abuts against the inner diameter member 104, so that the inner diameter member 104 is biased by the second coil spring 106. Retire against. When the inner diameter member 104 is retracted, the locking ball 103 moves inward in the radial direction, the locking ball 103 is fitted into the fitting groove 2 a formed in the gas plug main body 2, and the protruding member 102 is the first coil spring 101. It protrudes to the front side (right side in the X direction in FIG. 2) by the urging force. In this way, the locking ball 103 of the gas connector 100 is fitted into the fitting groove 2 a of the gas plug body 2, so that the gas connector 100 is externally mounted on the gas plug body 2. When the gas connector 100 is attached to the gas plug body 2, the slide valve G is pressed by the pressing portion 105 of the gas connector 100. By pressing against the slide valve G by the pressing portion 105, both the first valve body G1 and the second valve body G2 are located upstream of the gas flow passage 1 along the axial direction of the gas plug body 2 (X direction in FIG. 2). To the open position, the gas flow passage 1 is opened, and gas supply to the gas appliance is performed.

  When the gas connector 100 is removed from the gas plug body 2, the locking member 103 is fitted into the fitting groove 2a by pushing the protruding member 102 against the urging force of the first coil spring 101. Since it is released, the gas connector 100 can be removed from the gas plug body 2. Then, when the gas connector 100 is removed from the gas plug body 2, the pressing by the pressing portion 105 against the slide valve G is released, and both the first valve body G1 and the second valve body G2 are connected to the urging members F1, F2. The urging force moves along the axial direction of the gas plug body 2 to the downstream side of the gas flow passage 1 (the right side in the X direction in FIG. 2), returns from the open position to the closed position, and the gas flow passage 1 is closed. To be spoken.

  The excessive outflow prevention mechanism H is disposed in the second flow path portion 1b of the gas flow path 1, and includes a cylindrical member H1 in which a flow path for circulating gas is formed. Inside the cylindrical member H1, there is an overflow prevention valve H2 that is movable in the axial direction of the gas plug body 2 between an initial position that allows gas flow and an operating position that blocks gas flow, and a reset operation from the reset means R. As a result, the operated member H3 (corresponding to the operated part) that receives the pressing operation to the upstream side of the gas flow passage 1, and the overflow prevention valve H2 and the operated member H3 are movable in the axial direction of the gas plug body 2. And a supporting member H4 for supporting the above.

  The overflow prevention valve H2 is urged by the third urging member F3 so as to return to the initial position upstream of the operating position, and is held at the initial position by contacting the contact member H5. ing. The overflow prevention valve H2 is provided so as to be freely movable from the initial position to the operating position by the flow pressure of the gas flow rate when the gas flow rate exceeds a certain level. H2 is seated on the valve seat H6 and prevents gas flow.

  The support member H <b> 4 is formed in a cylindrical shape whose inside penetrates in the axial direction of the gas plug main body 2. The upstream portion of the support member H4 is externally fitted to the shaft portion H2a of the overflow prevention valve H2, and supports the overflow prevention valve H2 so as to be movable in the axial direction of the gas plug body 2. The downstream portion of the support member H4 is externally fitted to the operated member H3, and supports the operated member H3 so as to be movable in the axial direction of the gas plug body 2.

  The upstream portion H3a of the operated member H3 is formed in a rod shape extending in the axial direction of the gas stopper main body 2, is fitted into the support member H4, and is supported so as to be movable in the axial direction of the gas stopper main body 2. Yes. The downstream portion of the operated member H3 is formed in a substantially conical shape provided with a head portion H3b that protrudes downstream in the central portion of the gas flow passage 1 in the flow path radial direction. On the outer side in the radial direction of the head portion H3b, a leg portion H3c extending outward in the radial direction is provided, and the distal end portion of the leg portion H3c is engaged with an engaging groove H1a formed in the tubular member H1. Yes. Although illustration is omitted, a plurality of leg portions H3c are provided at intervals in the circumferential direction, and gas flows between the leg portions H3c. The operated member H3 is urged by the fourth urging member F4 so that the head portion H3b at the downstream side portion returns from the cylindrical member H1 to the protruding position where it protrudes to the downstream side of the gas flow passage 1. The portion H3c abuts against the end of the engagement groove H1a and is held at the protruding position.

The support member H4 has an excessive outflow in a state in which an interval corresponding to the amount of movement from the initial position to the operating position is separated between the excessive outflow prevention valve H2 positioned at the initial position and the operated member H3 positioned at the protruding position. The prevention valve H2 and the operated member H3 are supported so as to be movable in the axial direction of the gas plug body 2. Thereby, the excessive outflow prevention mechanism H is moved from the initial position of the excessive outflow prevention valve H2 when the reset operation in which the operated member H3 located at the protruding position is pressed upstream of the gas flow passage 1 is released. Movement to the operating position is allowed.
On the other hand, when the overflow prevention valve H2 is moved to the operating position by the flow pressure at a gas flow rate above a certain level, the overflow prevention valve H2 that has moved to the operating position comes into contact with the operated member H3 that is located at the protruding position. ing. When the operated member H3 located at the protruding position is subjected to a reset operation that is pressed to the upstream side of the gas flow passage 1, the operated member H3 and the overflow prevention valve H2 are brought into contact with the operated member H3. The overflow prevention valve H2 integrally moves to the upstream side of the gas flow passage 1, the seating of the overflow prevention valve H2 on the valve seat portion H6 is released, and the gas pressure from the upstream side is released. The overflow prevention valve H2 is returned to the initial position by the urging force of the third urging member F3. In this way, the excessive outflow prevention mechanism H sets the excessive outflow prevention valve H2 to the initial position when the operated member H3 located at the protruding position receives a reset operation that is pressed to the upstream side of the gas flow passage 1. I am returning.

The reset means R closes the slide valve G in the axial direction of the gas stopper main body 2 (in the direction of arrow X in FIGS. 1 and 2) when the gas connector 100 is detached from the gas stopper main body 2. Along with the movement to the position, a reset operation for pressing the head H3b of the operated member H3 to the upstream side of the gas flow passage 1 is performed in order to return the overflow prevention valve H2 to the initial position. .
The reset means R is disposed between the slide valve G and the operated member H3 in the axial direction of the gas plug main body 2 and is movable in the axial direction of the gas plug main body 2, and the movable member R4 is operated. A first biasing member F1 (an example of a biasing member) that biases the member H3 to the operation side that performs a reset operation, and an upstream side of the gas flow passage 1 from the closed position (in FIGS. 1 and 2) Along with the movement of the slide valve G to the tip side of the arrow X), the magnetic force that moves the moving member R4 to the operation release side opposite to the operation side moves against the urging force of the first urging member F1. A first magnetic body R1 and a second magnetic body R2 (an example of magnetic force application means) that act on the member R4 are provided.
The first urging member F1 is provided between the first valve body G1 and the moving member R4. The first urging member F1 urges the moving member R4 to the operation side, and the first valve body G1 is located upstream of the gas flow passage 1. It is provided so that it may urge to the closed position side. That is, the first urging member F1 is configured to urge the slide valve G to return to the closed position side and urge the moving member R4 to the operation side.
The first magnetic body R1 is provided on the first valve body G1 of the slide valve G, and the second magnetic body R2 is provided on the moving member R4 so as to face each other in the axial direction of the gas flow passage 1. Is arranged. And between the said 1st magnetic body R1 and 2nd magnetic body R2, it is comprised so that an attractive force may arise with the movement of the slide valve G from a closed position to the upstream of the gas flow path 1. FIG. . For example, when the first magnetic body R1 and the second magnetic body R2 are composed of permanent magnets, the first magnetic body R1 and the second magnetic body R2 are arranged in a state in which different magnetic poles face each other.
As shown in FIGS. 1 and 2, the moving member R4 is disposed in the third flow path portion 1c of the gas flow passage 1, and has a guide surface R4a along the inner wall of the third flow path portion 1c. The guide surface R4a is slidably arranged along the inner wall of the third flow path portion 1c. Furthermore, the moving member R4 has an opening R4b in the axial direction of the gas flow passage 1, and the opening R4b is formed so that gas can flow from the upstream side to the downstream side.
For example, as shown in FIG. 4A, the moving member R <b> 4 has an annular shape as viewed in the axial direction of the gas flow passage 1 (in the direction along arrow X in FIGS. 1 and 2). In addition, a guide part R4a is provided along the inner wall of the third flow path part 1c of the gas flow passage 1, and an opening R4b is provided inside the annular guide part R4a. Is provided with a pressing portion R4c that presses the head H3b of the operated member H3. As another shape, as shown in FIG. 4 (b), the third flow path portion of the gas flow path 1 is arranged on the outer periphery of the gas flow path 1 at equal intervals in the circumferential direction as viewed in the axial direction. A guide portion R4a that is slidable along the inner wall of 1c is provided, and an opening portion R4b is provided between the guide portions R4a in the circumferential direction. A pressing action portion R4c that presses the portion H3b is provided.

The reset means R moves from the closed position of the slide valve G pressed by the pressing portion 105 of the gas connector 100 to the upstream side of the gas flow passage 1 when the gas connector 100 is mounted from the gas stopper body 2. Accordingly, the distance between the first magnetic body R1 and the second magnetic body R2 is decreased, and the moving member R4 located on the operation side is generated against the urging force of the first urging member F1. By the magnetic force between R1 and 2nd magnetic body R2, it moves to the operation cancellation | release side. As a result, the pressure on the head H3b of the operated member H3 is released, and the operated member H3 protrudes to the downstream side of the gas flow passage 1 by the urging force of the fourth urging member F4, and the operated member H3 is excessively moved. In the form of securing a space with the outflow prevention valve H2, the excessive outflow prevention valve H2 is allowed to move from the initial position to the operating position. The reset operation is released by the flow of the example.
On the other hand, when the gas connector 100 is mounted from the gas plug main body 2, the reset means R releases the pressure on the slide valve G by the pressing portion 105 of the gas connector 100. As the slide valve G moves to the closed position, the distance between the first magnetic body R1 and the second magnetic body R2 is increased, and the magnetic force acting on the moving member R4 on the operation release side is decreased. The moving member R4 is moved to the operation side by the urging force of the first urging member F1 acting on the. As a result, the head H3b of the operated member H3 is urged to the upstream side of the gas flow passage 1, and the overflow prevention valve H2 is moved to the upstream side of the gas flow passage 1 together with the operated member H3 to return to the initial position. Can be made. The reset operation is performed according to the flow of the example.

Hereinafter, the movement of the slide valve G, the excessive outflow prevention mechanism H, and the reset means R will be described with reference to FIG.
FIG. 3A shows a state where the gas connector 100 is removed from the gas plug body 2. FIG. 3B shows a state in which the gas connector 100 is mounted on the gas plug body 2. FIG. 3C shows a state in which the excessive outflow prevention valve H2 has moved from the initial position to the operating position when the gas connector 100 is attached to the gas plug body 2. FIG. FIG. 3D shows a state in which the reset operation is executed by removing the gas connector 100 from the gas plug body 2.

  As shown in FIG. 3 (a), when the gas connector 100 is removed from the gas plug body 2, the slide valve G is in the closed position, and the gas flow passage 1 is closed by the slide valve G. It is spoken. At this time, the moving member R4 is biased to the operating side by the action of the biasing force to the operating side by the first biasing member F1, and the pressing action portion R4c of the moving member R4 is the head of the operated member H3. The part H3b is pressed to the upstream side of the gas flow passage 1, and the reset operation is performed. At this time, the excessive outflow prevention valve H2 is located at the initial position by the reset operation.

  As shown in FIG. 3 (b), when the gas connector 100 is attached to the gas plug body 2, the pressing portion 105 of the gas connector 100 presses the slide valve G to the upstream side of the gas flow passage 1, and the slide valve G moves from the closed position to the upstream side of the gas flow path 1 to open the gas flow path 1. At this time, with the movement of the slide valve G, the distance between the first magnetic body R1 and the second magnetic body R2 is decreased, and the magnetic force to the operation release side against the urging force to the operation side with respect to the moving member R4. And the moving member R4 is urged from the operation side to the operation release side to move from the operation position to the operation release position. By the movement of the moving member R4, the reset operation in which the pressing action portion R4c of the moving member R4 presses the head H3b of the operated member H3 to the upstream side of the gas flow path 1 is released. When the reset operation is released, the head H3b of the operated member H3 is returned to the protruding position by the urging force of the fourth urging member F4. In this way, when the operated member H3 is returned to the protruding position, the movement of the overflow prevention valve H2 from the initial position to the operating position is allowed between the operated member H3 and the overflow prevention valve H2. A space is formed.

  As shown in FIG. 3 (c), when the gas flow rate exceeds a certain level, the overflow prevention valve H 2 is moved along the axial direction of the gas plug body 2 by the flow pressure of the gas flow rate. Moving to the downstream side, the excessive outflow prevention valve H2 moves from the initial position to the operating position. As described above, the excessive flow prevention valve H2 moves to the operating position, whereby the gas flow in the gas flow passage 1 is blocked.

  As shown in FIG. 3D, when the gas connector 100 is removed from the gas plug body 2, the pressure of the gas connector 100 on the upstream side of the flow passage 1 against the slide valve G by the pressing portion 105 is released, The slide valve G moves to the downstream side of the gas flow passage 1 along the axial direction of the gas plug main body 2 by the urging force of the first urging member F1 and the second urging member F2. At this time, the distance between the first magnetic body R1 and the second magnetic body R2 decreases with the movement of the slide valve G, and acts on the operation release side rather than the urging force acting on the operation side with respect to the moving member R4. The magnetic force is increased, and the moving member R4 is urged from the operation release side to the operation side to move from the operation release position to the operation position. By the movement of the moving member R4, a reset operation is performed in which the pressing action portion R4c of the moving member R4 presses the head H3b of the operated member H3 to the upstream side of the gas flow passage 1. When the reset operation is performed, the overflow prevention valve H2 moves together with the operated member H3 to the upstream side of the gas flow passage 1, and is returned to the initial position.

Second Embodiment
In the embodiment described so far, the gas valve according to the present invention is moved by moving the slide valve G between the closed position and the open position with the attachment and detachment of the gas connector 100 with respect to the gas plug body 2. The gas plug according to the present invention is configured as a so-called gas outlet that performs switching between supply and stop of gas to the gas appliance.Hereinafter, the slide valve is closed and opened by manual operation with respect to the operation unit. An embodiment configured as a so-called knob-equipped gas stopper that switches between supply and stop of gas to a gas appliance by moving between the above and below will be described with reference to FIGS. In addition, about the structure similar to embodiment described so far, description may be omitted.

As shown in FIGS. 6 and 7, the gas stopper configured as a gas stopper with a knob according to the present embodiment includes a valve housing portion 5, a gas inflow passage 1 </ b> A that opens to the valve housing portion 5, and a gas. The outflow path 1B is accommodated in the gas stopper body 2 formed inside, the valve accommodating part 5, and the valve mechanism part A that opens and closes between the gas inflow path 1A and the gas outflow path 1B, and the operation part 11 An operation mechanism B that opens and closes the valve mechanism A in accordance with the operation is provided.
Hereinafter, detailed configurations of the gas stopper main body 2, the valve mechanism portion A, and the operation mechanism portion B will be sequentially described.

[Gas stopper body]
Each of the gas inflow path 1A and the gas outflow path 1B is a flow path having a circular cross section disposed inside the gas stopper main body 2 in a state where the axes X and Y intersect each other at a right angle. Specifically, the gas plug of the present embodiment is configured as a so-called L-shaped gas plug by arranging the axis X of the gas inflow passage 1A in the vertical direction and arranging the axis Y of the gas outflow passage 1B in the horizontal direction. Has been. The L-shaped gas plug thus configured discharges the gas g flowing into the gas plug main body 2 from the bottom to the top in a horizontal direction, and is applied to a gas device (not shown) or the like disposed on the side. Supply. In the present embodiment, the gas stopper is not configured as the L-shaped gas stopper, but the crossing angle between the gas inlet path 1A and the gas outlet path 1B is appropriately set, for example, by providing the gas outlet path 1B obliquely downward. It can be modified.
Further, the valve accommodating part 5 is a space having a circular cross section formed inside the gas stopper main body 2 on the upper extension of the gas inflow path 1A, and the gas inflow path 1A opens below the valve accommodating part 5. The gas outflow passage 1B is opened to the side of the valve accommodating portion 5.

(Valve mechanism)
When one of the gas inflow passage 1A and the gas outflow passage 1B is a gas inflow passage 1A, and a specific axis that is an axis of the specific gas flow passage is an axis X of the gas inflow passage 1A, the valve mechanism section A slides along the axis X which is the specific axis and the valve seat 6 formed in the opening 1Aa with respect to the valve accommodating part 5 of the gas inflow path 1A which is the specific gas flow path, and the valve seat 6 Between the closed position where the opening 1Aa is seated and the opening 1Aa slides along the axis X and is spaced apart from the valve seat 6 to open the opening 1Aa. And a slide valve G ′.
That is, the slide valve G ′ slides in the vertical direction along the axis X of the gas inflow passage 1A arranged in the vertical direction. The lower end position of the slide range is a closed position where the slide valve G ′ is seated on the valve seat 6 and closes the opening 1Aa. The upper end position of the same range is the slide valve G ′. It becomes an opening position which spaces apart and opens the opening 1Aa. Therefore, in the present embodiment, the closed position side indicates the lower side, and the open position side indicates the upper side.
In the first embodiment, the first valve element G1 functions as a valve element that closes the gas flow passage 1. However, in the second embodiment, the first valve element G1 includes the first valve element G1. The first notch part G4 and the fourth notch part G5 are provided, and the function as a valve body is not exhibited.
Here, FIGS. 9 and 10 show a state in which the slide valve G ′ is in the closed position, and FIGS. 6 and 8 show a state in which the slide valve G ′ is in the open position.

(Operation mechanism)
The operation mechanism unit B transmits a downward pressing operation on the operation unit 11 by the operator to the slide valve G ′, and closes the slide unit C along the axis X along the slide line C that can slide together with the slide valve G ′. It comprises an axis urging means D that urges upward from the position side toward the open position side, and a guide portion 20 that guides the slide of the slide portion C.
The operation portion 11 is provided as an upper surface of the upper bottom portion of the reverse cup-shaped operation button 10 that is arranged coaxially with the axis X of the gas inflow passage 1A and covers the upper portion of the gas plug body 2.
The operation button 10 is provided so as to be slidable in the vertical direction along the axis X. Further, the operation button 10 is provided between the lower surface of the upper bottom portion of the operation button 10 and the upper surface of the gas plug body 2. A coil spring 13 for biasing the operation button 10 upward is inserted.
The coil spring 13 is an ordinary coil spring in which winding portions are separated from each other between adjacent ones. When the coil spring 13 receives a compressive force along the axis X, an expansion force is generated along the coaxial line X. .

The slide portion C includes a guide pin 18 that is rotatably provided around the axis X, and a rotation biasing means E that biases the guide pin 18 in a direction around the axis X.
The guide pin 18 is disposed coaxially with the axis X and is formed to protrude outward in the radial direction of the circular cross section of the shaft member 17 on the outer surface of the cylindrical shaft member 17 that can slide along the axis X. Yes.
On the other hand, the rotation urging means E has one end fixed to the lower surface of the upper bottom portion of the operation button 10 and the other end fixed to the upper surface of the shaft member 17 so as to be coaxial with the axis X of the gas inflow passage 1A. The torsion coil spring 15 is arranged.
The torsion coil spring 15 is a coil spring in which the winding portions are in close contact with each other between adjacent portions, and receives a torsional moment in a certain rotation direction, thereby rotating in a direction opposite to the rotation direction (right direction in FIG. 11). Generates a repulsive force. Furthermore, the torsion coil spring 15 is configured such that the winding portion is in close contact with each other between adjacent portions, so that the downward pressing force along the axis X of the operation unit 11 received from one end side is applied to the shaft member on the other end side. 17 can be transmitted.
Protrusions 16 are provided at both ends of the torsion coil spring 15, and a winding portion including the protrusions 16 is formed on the groove 12 formed on the lower surface of the upper bottom of the operation button 10 and on the upper surface of the shaft member 17. By fitting into the formed groove portion 19, both ends of the torsion coil spring 15 are fixed to the operation button 10 and the shaft member 17.

The axis urging means D is composed of a normal coil spring 24 whose winding portions are separated from each other between adjacent ones, and generates an expansion force along the coaxial line X by receiving a compression force along the axis X.
This coil spring 24 is inserted in a compressed state along the axis X between the lower surface of the slide valve G ′ and the upper surface of the cylindrical member H1 provided below the valve housing portion 5. The slide valve G ′ and the slide portion C are urged upward along the axis X from the closed position side to the open position side in a form in which the slide valve G ′ is urged upward with respect to the upper surface of H1.

The guide portion 20 is configured by a cylindrical member 21 having a guide groove 22 formed on the outer surface for guiding the guide pin 18 to slide on the axis line X and to rotate around the axis line X.
Further, the guide groove 18 is rotated against the urging force of the torsion coil spring 15 when a pressure is applied to the operation portion 11 to displace the slide valve G ′ from the open position to the closed position. Rotation guides 22a and 22b, and a locking mechanism in which the guide pin 18 biased by the coil spring 24 and the torsion coil spring 15 is locked while the slide valve G ′ is maintained in the closed position when the pressing force is subsequently removed. A portion 22c is formed.
With such a configuration, the gas stopper according to the present embodiment, as will be described in detail later, is closed by a single pressing operation on the operation unit 11 and then opened by a single pressing operation on the operation unit 11. A so-called push-push type opening / closing operation in which a plug operation is performed is realized.

As shown in FIG. 11A, in the guide groove 22, the end portions on the closed position side of the rotation guide portions 22 a and 22 b are locking portions in the rotation direction against the urging force around the axis X of the torsion coil spring 15. It is located on the far side of rotation from 22c (for example, on the left side in FIG. 11A). A bulging portion 22d formed by the guide groove 22 bulging in the urging direction side (that is, the upper side) along the axis X of the coil spring 24 from the end portion on the closed position side of the rotation guide portions 22a and 22b to the locking portion 22c. Is formed.
Therefore, the guide pin 18 can move directly along the upper side of the guide groove 22 from the end of the rotation guide portions 22a and 22b on the closed position side toward the locking portion 22c through the bulging portion 22d. Thus, it is appropriately locked to the locking portion 22c. The shape and the like of the bulging portion 22d can be changed as appropriate, and the bulging portion 22d is omitted, and a locking portion 22c that cuts upward is formed in the middle of the closed position side rotation guiding portion 22b. When the pressing force f11 applied to the operating portion 11 is removed with the guide pin 18 at the position side end, the guide pin 18 slightly reverses the closed position side rotation guiding portion 22b and is in the middle You may comprise so that it may be latched by 22c.

The rotation guide portions 22a and 22b are arranged in the direction around the axis X, and are located closer to the closed position than the locking portion 22c and the opening position positioned closer to the opening position than the locking portion 22c. It consists of a position side rotation guiding part 22a.
Furthermore, when the orthogonal plane of the axis X of the gas inflow passage 1A is S, the lead angle αb of the guide groove 22 with respect to the orthogonal plane S in the closed position side rotation guiding portion 22b is the same lead angle αa of the opening position side rotation guiding portion 22a. Is set smaller than.
That is, in the closing operation, the guide pin 18 that is guided along the rotation guide portions 22a and 22b by applying a pressing force to the operation portion 11 is opened from the open position side to the position where the locking portion 22c is formed. It is displaced along the position-side rotation guiding portion 22a, and the closed position-side rotation guiding portion 22b is located between the position where the locking portion 22c is formed and the end on the closed position side formed on the far side of the rotation. Will be displaced along.
Since the lead angle αb of the closed position side rotation guiding portion 22b is smaller than the lead angle αa of the open position side rotation guiding portion 22a, the guide pin 18 is closed against the biasing force of the torsion coil spring 15 and the position side rotation guiding is performed. The pressing force with respect to the operation unit 11 necessary for displacing along the portion 22b is larger than when displacing along the opening position side rotation guiding portion 22a.
Hereinafter, the detailed configuration of the guide groove 22 will be described based on FIGS. 11 and 12 together with the transition state of the guide pin 18 in the guide groove 22 during the opening / closing operation of the gas stopper according to the present embodiment. 11 and 12, the guide groove 22 is shown in a state when the outer peripheral surface of the cylindrical member 21 is developed on a plane.

[When closing operation]
First, the transition state of the position of the guide pin 18 in the guide groove 22 during the gas stopper closing operation of the present embodiment will be described with reference to FIG.
When the slide valve G ′ is in the open position and is open (see FIG. 6), the guide pin 18 opens the rotation guide portion 22a in the guide groove 22 as shown in FIG. It is located on the side end (upper right end in FIG. 11A).
Next, when a pressing force f11 is applied to the operation portion 11 and the pressing force f11 is transmitted to the slide portion C, the guide pins 18 provided on the slide portion C are as shown in FIG. The guide groove 22 moves to the boundary between the opening position side rotation guiding portion 22a and the closing position side rotation guiding portion 22b.
During this movement, the guide pin 18 is displaced downwardly from the open position side to the closed position side against the upward biasing force fd from the closed position side along the axis X by the coil spring 24 toward the open position side. At the same time, the torsion coil spring 15 rotates against the urging force fe in the direction around the axis X.
That is, the upward biasing force fd and the rightward biasing force fe in FIG. 11B are applied to the guide pin 18 located at the boundary between the opening position side rotation guiding portion 22a and the closing position side rotation guiding portion 22b. It has been added.

Further, when a relatively large pressing force f11 is applied to the operation portion 11, the guide pin 18 is moved to the back side of the rotation position of the closed position side rotation guiding portion 22b in the guide groove 22 as shown in FIG. c), the slide valve G ′ is displaced to the closed position (see FIG. 9).
Also in this movement, the guide pin 18 moves in the lower left direction against the upward biasing force fd by the coil spring 24 and the rightward biasing force fe by the torsion coil spring 15, and the guide pin 18 after the movement Is a state in which an upward biasing force fd and a rightward biasing force fe are added.
The urging forces fd and fe increase as the amount of displacement of the guide pin 18 in the lower left direction increases, but the same reference numerals are used to simplify the explanation.

Next, when the pressing force f11 applied to the operation unit 11 is removed as described above, an upward biasing force fd by the coil spring 24 and a rightward application by the torsion coil spring 15 are obtained as shown in FIG. Due to the force fe, the guide pin 18 moves along the bulging portion 22d to a position where it abuts on the locking portion 22c in the upper right direction.
The angle of the wall surface with which the guide pin 18 of the locking portion 22c abuts is such that the guide pin 18 to which the resultant force of the urging forces fd and fe is applied is prevented from being displaced toward the rotation guide portions 22a and 22b. Since it is set, the position of the guide pin 18 is maintained in a state of being locked to the locking portion 22c. As a result, as shown in FIG. 10, the slide valve G ′ is maintained in the closed position. Thus, the closing operation is completed.

(When opening)
Next, the transition state of the position of the guide pin 18 in the guide groove 22 during the opening operation of the gas stopper according to this embodiment will be described with reference to FIG.
When the slide valve G ′ is in the closed position and closed (see FIG. 10), the guide pin 18 is in a position to be locked to the locking portion 22c as shown in FIG. 12 (a). .
Next, when a relatively small pressing force f11 ′ is applied to the operation portion 11 and the pressing force f11 ′ is transmitted to the slide portion C, the guide pin 18 provided on the slide portion C is shown in FIG. As shown in FIG. 2, the lever is slightly displaced in the lower left direction against the urging forces fd and fe, so that the latching portion 22c is unlocked.
At this time, since the pressing force f11 ′ applied to the operation unit 11 is smaller than the pressing force f11 applied during the closing operation described above, the guide pin 18 is, for example, the closed position side rotation guiding unit 22b. It does not displace to the closed position side.
Further, the lead angle αb of the closed position side rotation guiding portion 22b is smaller than the lead angle αa of the open position side rotation guiding portion 22a, and the guide pin 18 is closed against the biasing force fe of the torsion coil spring 15. Since a relatively large pressing force is required for displacing to the closing position side along 22b, when the operating portion 11 is pressed with a pressing force f11 'smaller than the pressing force, the guide pin 18 is closed. There is no displacement toward the back of the rotation along the position side rotation guiding portion 22b.

Next, when the pressing force f11 ′ applied to the operation unit 11 is removed as described above, an upward biasing force fd by the coil spring 24 and a rightward application by the torsion coil spring 15 are obtained as shown in FIG. Due to the force fe, the guide pin 18 moves in the upper right direction along the open position side rotation guiding portion 22a, and as a result, as shown in FIG. 6, the slide valve G ′ is displaced from the closed position to the open position. Thus, the opening operation is completed.
In the present embodiment, the rotation guiding portion of the guide groove 22 is configured by the opening position side rotation guiding portion 22a and the closed position side rotation guiding portion 22b, but the rotation guiding portion may be configured by a uniform one. I do not care. In addition, the lead angles αa and αb of the rotation guide portions 22a and 22b are not uniform and can be appropriately modified, for example, gradually decreasing from the open position side to the close position side.

[Reset means]
Since the gas plug of the present embodiment shuts off the gas supply when a gas g having a flow rate above a certain level flows, as shown in FIG. 6, the gas inflow path 1A as the specific gas flow path has an overflow prevention function. An overflow prevention mechanism H having a valve H2 is provided, and a reset means R for performing a reset operation for resetting the overflow prevention valve H2 by movement of the slide valve G ′ between the closed position and the open position. Is provided.
Here, with respect to the configurations of the overflow prevention valve H2 and the reset means R, a configuration obtained by modifying a part of the configuration of the first embodiment is employed. Specifically, in the first embodiment, an attractive force as a magnetic force is exerted between the first magnetic body R13 and the second magnetic body R2, but in this embodiment, the repulsive force Is demonstrated. For this reason, below, the part which is changing from 1st Embodiment about the said reset means R is mainly demonstrated.
In the present embodiment, the reset means R is movable in the axial direction of the gas flow passage 1 and is capable of pressing the operated member H3 of the excessive outflow prevention mechanism H, the moving member R4 and the slide valve G. Are formed integrally with the slide valve G ′ so as to extend from the upstream end of the slide valve G ′ to the upstream side of the gas flow passage 1. The first magnetic body R13 provided at the tip of the rod-shaped member and the second magnetic body R2 provided in the moving member R4 in a state in which a repulsive force is generated between the first magnetic body R13 and the first magnetic body R13. .
With this configuration, when the slide valve G ′ is in the open position, the excessive outflow prevention valve H2 moves to the operating position, thereby preventing gas flow (see FIG. 8) from the open position of the slide valve G ′. With the movement to the closed position (movement from FIG. 8 to FIG. 10), the repulsive force between the first magnetic body R13 and the second magnetic body R2 increases, and the moving member by the first biasing member F1. The force that attracts R4 toward the slide valve G ′ is weakened, and the moving member R4 moves toward the excessive outflow prevention mechanism H. As a result, the seating of the overflow prevention valve H2 on the valve seat portion H6 is released, and the reset operation is performed in such a manner that the overflow prevention valve H2 is returned to the initial position by the urging force of the third urging member F3. Is called.

<Another embodiment>
(1) In the above embodiment, the first magnetic body R1 and the second magnetic body R2 are both configured as permanent magnets, but one may be a ferromagnetic body and the other may be a permanent magnet.

(2) In the first embodiment, the central axes of the plurality of flow path portions are the same, and the gas flow path 1 is provided in a straight line. For example, as shown in FIG. A central axis in the side portion (first to second flow passage portions 1a to 1b), a central axis in the middle flow portion (third flow passage portion 1c), and a downstream portion (fourth to seventh flow passage portions 1g to 1g). It is also possible to provide a linear gas flow passage 1 in which the central axis in 1g) is shifted in the flow path radial direction. Thus, the provision of the gas flow passage 1 in a straight line along the axial direction of the gas plug body 2 is not limited to a straight line as in the first embodiment, but as shown in FIG. Also included are those that are misplaced.
Also in the case shown in FIG. 5, as in the first embodiment, the gas plug main body 2 can be provided in a straight line, and the gas plug main body 2 can be configured compactly.

(3) In the above embodiment, foreign matter adheres to the first magnetic body R13 or the second magnetic body R2, and the magnetic force acting between the first magnetic body R13 and the second magnetic body R2 is inhibited by the foreign matter. In order to prevent this, it is preferable to provide a cylindrical member that isolates the space between the first magnetic body R13 and the second magnetic body R2 from the gas flow passage 1. The cylindrical member preferably has stretchability, and is provided in a state of expanding and contracting following the change in the interval even when the interval between the first magnetic body R13 and the second magnetic body R2 varies. .

(4) In the embodiment described so far, the example in which the outer surface of the slide valve G is seated on the inner surface of the gas flow passage 1 to close the gas flow passage 1 is shown. A member may be provided, and the gas flow passage 1 may be closed in a form in which the slide valve G is seated on the seal member.

  According to the gas stopper of the present invention, the reset means for resetting the overflow prevention valve of the overflow prevention mechanism is based on contact between the reset means and another member while realizing the reset means with a relatively simple configuration. It can be effectively used as a gas stopper that can prevent damage to the reset means.

1: Gas flow passage 2: Gas stopper body G: Slide valve H: Overflow prevention mechanism H2: Overflow prevention valve H3: Operated member (operated part)
R: reset means R1: first magnetic body R2: second magnetic body F1: first urging member R4: moving member 100: gas connector 105: pressing portion

Claims (7)

A cylindrical gas stopper body having a gas flow passage formed therein, a slide valve movable in the axial direction of the gas stopper body between a closed position and an open position, and a gas flow direction of the gas flow passage An overflow prevention valve disposed upstream of the slide valve, and disposed between the slide valve and the overflow prevention valve in the gas flow direction, between the closed position and the open position. A gas stopper provided with reset means for performing a reset operation to reset the overflow prevention valve by movement of the slide valve,
The reset means biases a moving member that is movable in the axial direction of the gas plug main body to either the operation side for performing the reset operation or the operation release side opposite to the operation side. And magnetic force application means for causing the moving member to act on the other side of the operation side or the operation release side as the slide valve moves between the closed position and the open position. Gas tap.   The magnetic force acting means is composed of a first magnetic body provided on the slide valve and a second magnetic body provided on the moving member, and accompanying the movement of the slide valve from the closed position to the open position. The gas stopper according to claim 1, wherein an attractive force or a repulsive force as a magnetic force generated between the first magnetic body and the second magnetic body is applied to the moving member.   The gas stopper according to claim 1, wherein the moving member has a guide surface along an inner wall of the gas flow passage and is slidably provided in a state where the guide surface is along the inner wall.   The biasing member is provided between the slide valve and the moving member, biases the moving member toward the operation side or the operation release side, and moves the slide valve from the open position to the closed position side. Or the gas stopper as described in any one of Claims 1-3 provided so that it may bias to the side of the said open position from the said closed position.   The gas flow passage is provided with the overflow prevention valve, the reset means, and the slide valve in order from the upstream side, and is provided in a linear shape along the axial direction of the gas plug body. The gas stopper according to any one of the above.   The gas plug according to any one of claims 1 to 5, wherein the slide valve moves between the closed position and the open position as the gas connector is attached to and detached from the gas plug main body.   The gas stopper according to any one of claims 1 to 5, wherein the slide valve moves between the closed position and the open position in accordance with a pressing operation with respect to the operation unit.

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