JP2012207784A - Gas cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cock which is simplified in the configuration of a reset means and is reduced in the number of members, and which allows reset operation and reset operation release to be performed properly.SOLUTION: The gas cock has the reset means R which performs the reset operation of an overflow preventing valve H by the movement of a slide valve G between a closed position and an open position in a gas cock body 2. The reset means R includes a strip member R1 which contacts the operated part H3 to perform the reset operation when either a tensile strength to the downstream side or a thrust to the upstream side of the gas flow passage 1 is received and which separates from the operated part H3 to release the reset operation when the other one of the tensile strength to the downstream side or the thrust to the upstream side of the gas flow passage 1 is received, and a thrust/tensile strength imparting member G1 which is connected to the strip member R1 and is capable of freely imparting the tensile strength/thrust by the movement of the slide valve between the closed position and the open 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.

  As a gas outlet as a conventional gas plug, for example, Patent Document 1 discloses that an excessive outflow occurs upstream of a slide valve that opens and closes a gas flow passage in a cylindrical gas plug body in which the gas flow passage is formed. There is disclosed a device that has a built-in prevention valve, is provided between the slide valve and the overflow prevention valve, and includes reset means for resetting the overflow prevention valve when the slide valve is opened and closed.

  According to this gas stopper, the reset means includes a reset rod made of a leaf spring and an annular body movable in the axial direction of the gas stopper body. The reset rod is provided so as to perform a reset operation in which the central portion abuts the operated portion of the overflow prevention valve and presses the operated portion to the upstream side of the gas flow passage. When the both ends of the heel are pushed into the upstream side, the central portion is curved downstream. The annular body is provided so as to move upstream from the urging force of the urging member by the movement of the slide valve from the closed position to the open position. In this way, when the gas connector is removed from the gas plug body, the central portion of the reset rod abuts on the operated portion of the overflow prevention valve to perform the reset operation, and the gas connector is connected to the gas plug. When mounted on the main body, the annular body is moved to the upstream side by the movement of the slide valve so that the central portion of the reset rod is curved downstream, the reset rod is moved away from the operated portion, and the reset operation is released. Yes.

  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.

JP 05-340484 A Japanese Examined Patent Publication No. 02-021660 Japanese Patent Laid-Open No. 02-154918

  In the gas stopper described in Patent Document 1, as a reset means, in addition to the reset rod and the annular body, an urging member for moving the annular body upstream by the movement of the slide valve from the closed position to the open position is provided. Therefore, there are many constituent members constituting the reset means, which leads to a complicated configuration and an increase in the number of members. In addition, since the center portion of the reset rod is curved downstream, the reset rod is separated from the operated portion and the reset operation is released, so that the central portion of the reset rod is curved downstream. In addition, the configuration of the annular body is complicated, such as the necessity to configure the annular body so as to contact only both end portions of the reset rod, and the configuration of the reset means is complicated.

  The present invention has been made paying attention to such a point, and its purpose is to simplify the configuration of the reset means and reduce the number of members, and to appropriately perform the reset operation and reset operation by the reset means. It is in providing a gas stopper that can be used.

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. And a reset means for performing a reset operation for resetting the overflow prevention valve by the movement of the slide valve.
The reset operation is an operation of pressing the operated portion of the overflow prevention valve to the upstream side of the gas flow path,
The reset means changes its posture to an operation posture in which the reset operation is performed in contact with the operated portion when receiving either a pulling force to the downstream side or a pressing force to the upstream side of the gas flow passage. At the same time, a posture is set to an operation release posture in which the reset operation is released away from the operated portion when either the tensile force to the downstream side of the gas flow passage or the pressing force to the upstream side is received. A belt-like member housed in the gas flow passage in a changed state;
A pressing force / tensile force applying member that is connected to the belt-like member and that can freely apply the tensile force and the pressing force by moving the slide valve between the closed position and the open position. It is in.
Here, the correspondence relationship between either one and the other is the relationship between the downstream pressing force (one) and the upstream pressing force (the other) (the relationship shown in the first and second embodiments described later). ), Or the relationship of the tensile force (the other side) to the downstream side with respect to the pressing force (one side) to the upstream side (the relationship shown in the third embodiment to be described later).

According to this characteristic configuration, for example, by moving the slide valve from the open position to the closed position, the pressing force / tensile force imparting member imparts a tensile force to the downstream side of the gas flow path with respect to the strip member, The posture can be changed to an operation posture in which the member abuts on the operated portion of the overflow prevention valve to perform the reset operation. On the other hand, by the movement of the slide valve from the closed position to the open position, the pressing force / tensile force applying member applies a pressing force to the upstream side of the gas flow path to the strip member, and the strip member is moved from the operated portion. The posture can be changed to an operation release posture that releases the reset operation on the operated portion after being separated.
Also, for example, when the slide valve moves from the open position to the closed position, the pressing force / tensile force applying member applies a pressing force to the upstream side of the gas flow passage to the strip member, and the strip member prevents overflow. The posture can be changed to an operation posture in which the reset operation is performed in contact with the operated portion of the valve. On the other hand, by the movement of the slide valve from the closed position to the open position, the pressing force / tensile force applying member applies a pulling force to the downstream side of the gas flow path with respect to the strip member, and the strip member is moved from the operated portion. The posture can be changed to an operation release posture that releases the reset operation on the operated portion after being separated.
In this way, a reset operation is performed by applying either a pulling force or a pressing force to the band-shaped member with the pressing force / tensile force applying member as the slide valve moves, and setting the band-shaped member to the operating posture. Thus, the reset operation can be canceled by applying either the tensile force or the pressing force to the belt-shaped member with the pressing force / tensile force applying member and setting the belt-shaped member to the operation releasing posture.

For example, when the pressing force / tensile force application member is configured to be movable integrally with the slide valve, since the belt-like member is connected to the pressing force / tension force application member, the slide valve has an open position and a closed position. The structure of the pressing force / tensile force applying member can be simplified while both the tensile force and the pressing force can be appropriately applied only by moving between them.
Therefore, as a reset means, in addition to the belt-like member, it is only necessary to provide a pressing force / tensile force imparting member that can have such a simple configuration, which simplifies the configuration of the reset means and reduces the number of members. Accordingly, the reset operation by the reset means and the release of the reset operation can be appropriately performed.

Further features of the gas stopper of the present invention are as follows:
The intermediate member in the longitudinal direction of the belt-like member is a pressure that abuts against the operated portion and presses the operated portion upstream of the gas flow passage when the belt-like member is changed to the operation posture. The operation part is provided.

  According to this feature configuration, the belt-shaped member is provided at the intermediate portion in the longitudinal direction of the belt-shaped member so as to contact the operated portion and press the operated portion to the upstream side of the gas flow path. When the posture is changed to the operation posture, the pressing operation portion of the belt-shaped member presses the upstream side while being in contact with the operated portion, so that the reset operation can be performed reliably.

Further features of the gas stopper of the present invention are as follows:
The band-shaped member is formed in an annular shape, and is housed in the gas flow passage in a state where the pressing operation portion is disposed at a position facing the operated portion in the axial direction of the gas plug main body. It is in.

  According to this characteristic configuration, since the belt-like member is formed in an annular shape, by connecting to the pressing force / tensile force applying member, the pressing force / tensile force applying member only moves, Both the tensile force and the pressing force can be appropriately applied. Since the pressing operation part is arranged at a position facing the operated part in the axial direction of the gas plug main body, the pressing operation part is surely brought into contact with the operated part when the operating position is reached. The reset operation can be performed reliably.

Further features of the gas stopper of the present invention are as follows:
The belt-shaped member formed in an annular shape is connected to the upstream end portion of the slide valve, and the pressing force / tensile force applying member is configured at the upstream end portion of the slide valve. .

  According to this characteristic configuration, since the pressing force / tensioning force applying member is configured at the upstream end side portion of the slide valve, the reset unit can be configured only by the slide valve and the belt-shaped member, and the configuration of the reset unit Therefore, the reset operation by the reset means and the release of the reset operation can be appropriately performed.

Further features of the gas stopper of the present invention are as follows:
A guide wall portion that contacts the belt-like member and guides the posture change of the belt-like member when the belt-like member receives the tensile force and when the belt-like member receives the pressing force, respectively. It is in the point.

  According to this characteristic configuration, the belt-like member to which the pressing force / tensile force is applied from the pressing force / tensile force applying member is released from the posture change to the operation posture in which the reset operation is performed and the reset operation by the guide wall portion. The posture change to the operation release posture to be performed can be performed, and the reset operation and the reset operation can be appropriately released.

Further features of the gas stopper of the present invention are as follows:
The band member is formed of an elastic body that can be elastically deformed.

  According to this characteristic configuration, since the belt-like member is formed of an elastic body that can be elastically deformed, the posture can be easily changed by applying a tensile force or a pressing force, and the operation posture and the operation release posture can be changed. In each case, the posture is easily maintained. Therefore, it is possible to configure a belt-like member that can appropriately perform the reset operation and the release of the reset operation.

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 this characteristic configuration, the gas stopper main body is provided in a straight line along the axial direction of the gas stopper main body while being provided in the order of the overflow prevention valve, the reset means, and the slide valve in the gas flow passage. 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, when the gas plug is installed in a straight line, the gas plug can be installed coaxially with the gas pipe connected to the gas plug body, and the installation space can be reduced. 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 outlet 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. .

Sectional drawing of the gas connector and gas stopper in the state which has removed the gas connector in 1st Embodiment from the gas stopper main body Sectional drawing of the gas connector and gas stopper in the state which has mounted | wore the gas stopper main body with the gas connector in 1st Embodiment Sectional drawing which shows the movement of the gas stopper in 1st Embodiment Sectional drawing of the gas stopper in another embodiment Side sectional view which shows the state at the time of closing 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 non-operation of the overflow prevention valve at the time of closing of the gas stopper of 2nd Embodiment Side sectional view which shows the state in the middle of opening operation of the gas stopper of 2nd Embodiment Side sectional view which shows the state at the time of the action | operation of the overflow prevention valve at the time of opening 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 opening operation in 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. Side sectional view showing the time of opening of the third embodiment Side sectional view which shows the state at the time of the action | operation of the excessive outflow prevention valve at the time of the opening of 3rd Embodiment Side sectional view which shows the state in the middle of opening operation of the gas stopper of 3rd Embodiment Side sectional view showing the time of closing of the third embodiment

<First Embodiment>
A gas stopper according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the gas stopper according to the first embodiment includes a cylindrical gas stopper body 2 in which a gas flow passage 1 is formed, and a gas connection is made to the gas stopper body 2. The gas flow passage 1 is provided by supplying the gas to the gas appliance connected to the gas connection tool 100 by gas flow in the gas flow passage 1 by attaching the tool 100 and removing the gas connection tool 100 from the gas plug body 2. It is configured as a so-called gas outlet that stops the gas flow in the gas and stops the gas supply to the gas appliance. 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 (corresponding to the operated portion) 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 biasing force moves along the axial direction of the gas plug body 2 to the downstream side of the gas flow passage 1 (left side in the X direction in FIG. 2) and returns from the open position to the closed position. The valve is closed.

  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.

  When the gas connector 100 is detached from the gas stopper main body 2, the reset means R is excessive as the slide valve G moves from the open position to the closed position in the axial direction of the gas stopper main body 2. In order to return the outflow prevention valve H2 to the initial position (in order to reset it), 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.

  The reset means R includes a belt-shaped member R1 accommodated from the third flow path portion 1c to the fifth flow path portion 1e, and a pressing force that applies a tensile force and a pressing force to the belt-shaped member R1 by the movement of the slide valve G. A pressure / tensile force imparting member, and the pressing force / tensile force imparting member is constituted by a first valve body G1 which is an upstream end side portion of the slide valve G. The strip-shaped member R1 has a connection portion Ra connected to the side surface on the upstream side of the first valve body G1, and a pressing operation portion R2 that comes into contact with the operated member H3 in the overflow prevention valve H2. As a result, when the slide valve G moves from the closed position to the open position, a pressing force to the upstream side of the gas flow passage 1 is applied to the band-shaped member R1, while it is moved from the open position to the closed position. In this case, a tensile force to the downstream side of the gas flow passage 1 is applied to the strip member R1.

  When the belt-like member R1 receives a tensile force toward the downstream side of the gas flow passage 1, as shown in FIG. 1, the pressing operation portion R2 comes into an operation posture in which the reset operation is performed by contacting the operated member H3. . On the other hand, when the belt-shaped member R1 receives a pressing force upstream of the gas flow passage 1, as shown in FIG. 2, the operation of releasing the reset operation by separating the pressing operation portion R2 from the operated member H3. Release posture. Further, the strip-shaped member R1 is formed in an annular shape by an elastic body that can be elastically deformed, and the pressing operation portion R2 is disposed at a position facing the head H3b of the operated member H3 in the axial direction of the gas plug body 2. Is accommodated in the gas flow passage 1.

  Further, when the belt-like member R1 receives a tensile force toward the downstream side of the gas flow passage 1, the inner peripheral surface 1ca and the upstream side surface 1cb of the third flow path portion 1c that is the guide wall portion are formed on the belt-like member R1. It abuts and guides the posture change from the reset operation to the operation posture. On the other hand, even when the pressing force to the upstream side of the gas flow passage 1 is received, the posture change to the operation release posture that abuts on the belt-like member R1 and releases the reset operation is guided. That is, the strip-shaped member R1 is housed in the third flow path part 1c in a reduced diameter state and is applied to the inner peripheral surface 1ca and the upstream side face 1cb of the third flow path part 1c by elastic force. . Accordingly, when the belt-like member R1 receives a tensile force or a pressing force, the operation posture and the operation release posture are set while being supported by the inner peripheral surface 1ca and the upstream side surface 1cb of the third flow path portion 1c. The posture is held in the posture or the operation release posture.

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 mounted on the gas plug body 2. FIG. FIG. 3D shows a state in which the reset operation is performed 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. In this state, a reset operation is performed in which the head portion H3b of the operated member H3 comes into contact with the pressing operation portion R2 of the belt-shaped member R1 and presses the upstream side of the gas flow passage 1. This reset operation returns the excessive outflow prevention valve H2 to the initial position. FIG. 3A shows a state in which the excessive outflow prevention valve H2 is returned to the initial position.

  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 open position to open the gas flow passage 1. At this time, with the movement of the slide valve G, the pressing operation part R2 of the strip-shaped member R1 moves downstream, and the reset operation state in which the head H3b of the operated member H3 is pressed upstream of the gas flow passage 1 is established. Canceled. 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 downstream of the gas flow passage 1 along the axial direction of the gas plug body 2 by the flow pressure of the gas flow rate. The overflow prevention valve H2 moves from the initial position to the operating position. Thereby, it will be in the state where gas distribution was blocked by overflow prevention valve H2.

  As shown in FIG. 3 (d), 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 gas flow passage 1 against the slide valve G by the pressing portion 105 is released. The slide valve G moves from the open position to the closed position along the axial direction of the gas plug body 2 by the urging force of the first urging member F1 and the second urging member F2. At this time, with the movement of the slide valve G, the pressing operation part R2 of the belt-like member R1 moves upstream, the operated member H3 and the pressing operation part R2 come into contact with each other, and the head H3b of the operated member H3 Is reset to the upstream side of the gas flow passage 1, and as shown in FIG. 3A, the excessive outflow prevention valve H2 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 performs switching between supply and stop of gas to a gas appliance by moving between them 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. 5 and 6, 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 upper end position of the slide range is a closed position where the slide valve G ′ is seated on the valve seat portion 6 and closes the opening 1Aa. The lower end position of the slide 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 upper side, and the open position side indicates the lower side.
Here, FIGS. 7, 8 and 9 show a state where the slide valve G ′ is in the open position, and FIG. 5 shows a state where the slide valve G ′ is in the closed 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 opens the slide unit C along the axis X along the slide line C, which can slide together with the slide valve G ′. It comprises an axis urging means D that urges upward from the position side toward the closed 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 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 the direction opposite to the rotation direction (right direction in FIG. 5). 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 open position side toward the closed 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 second embodiment will be described in detail later, but the opening operation is performed by one pressing operation on the operation unit 11, and then one pressing operation on the operation unit 11 is performed. A so-called push-push type opening / closing operation in which a plugging operation is performed by an operation is realized.

As shown in FIG. 10A, in the guide groove 22, the end portions on the opening position side of the rotation guide portions 22 a and 22 b are locking portions in the rotational direction against the urging force around the axis X of the torsion coil spring 15. It is located on the far side of rotation (for example, on the left side in FIG. 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 opening position side end of the rotation guiding 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 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 opening position side rotation guiding portion 22b. When the pressing force f11 applied to the operation unit 11 is removed with the guide pin 18 at the end on the position side, the guide pin 18 opens, and the locking portion located in the middle of the position side rotation guide portion 22b is slightly reversed. You may comprise so that it may be latched by 22c.

The rotation guiding portions 22a and 22b are in the direction around the axis X, the opening position side rotation guiding portion 22b disposed on the opening position side with respect to the locking portion 22c and the closing position disposed on the closing position side with respect to 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 open position side rotation guiding portion 22b is the same lead angle αa of the closed position side rotation guiding portion 22a. Is set smaller than.
That is, in the plug opening operation, the guide pin 18 that is applied with the pressing force to the operation portion 11 and is guided along the rotation guide portions 22a and 22b is between the closed position side and the position where the locking portion 22c is formed. The opening position side rotation guiding portion is displaced along the closed position side rotation guiding portion 22a from the position where the locking portion 22c is formed to the end portion on the opening position side formed on the far side of the rotation. It will be displaced along 22b.
Since the lead angle αb of the opening position side rotation guiding portion 22b is smaller than the lead angle αa of the closing position side rotation guiding portion 22a, the guide pin 18 is opened 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 closed position side rotation guiding portion 22a.
Hereinafter, the detailed configuration of the guide groove 22 will be described based on FIGS. 10 and 11 together with the transition state of the guide pin 18 in the guide groove 22 during the opening and closing operation of the gas stopper of the present embodiment. 10 and 11, the guide groove 22 is shown in a state where the outer peripheral surface of the cylindrical member 21 is developed on a plane.

(When opening)
First, 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 the present embodiment will be described with reference to FIG.
When the slide valve G ′ is in the closed position and is closed (see FIG. 5), the guide pin 18 is connected to the rotation guide portion 22a at the closed position side of the guide groove 22 as shown in FIG. Is located at the end (upper right end in FIG. 10A).
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 pin 18 provided on the slide portion C is as shown in FIG. The guide groove 22 moves to the boundary between the closed position side rotation guiding portion 22a and the open position side rotation guiding portion 22b.
During this movement, the guide pin 18 is displaced downward from the closed position side to the open position side against the upward biasing force fd from the open position side along the axis X by the coil spring 24 toward the closed 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. 10B are applied to the guide pin 18 located at the boundary between the closed position side rotation guiding portion 22a and the open 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 opening position side rotation guiding portion 22b in the guide groove 22 as shown in FIG. c), the slide valve G ′ is displaced to the open position (see FIG. 8).
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. 9, the slide valve G ′ is maintained in the open position. Thus, the opening operation is completed.

[When closing operation]
Next, 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. 9), the guide pin 18 is in a position to be locked to the locking portion 22c as shown in FIG. 11 (a). is there.
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 moved to the position 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 above-described opening operation, the guide pin 18 is, for example, an opening position side rotation guiding unit. There is no displacement toward the open position along 22b.
Further, the lead angle αb of the opening position side rotation guiding portion 22b is smaller than the lead angle αa of the closing position side rotation guiding portion 22a, and the guide pin 18 is opened against the biasing force fe of the torsion coil spring 15 to open the position side rotation guiding portion. Since a relatively large pressing force is required for displacing along the opening position 22b, the guide pin 18 opens when the operating portion 11 is pressed with a pressing force f11 'smaller than the pressing force. 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 closed position side rotation guiding portion 22a, and as a result, as shown in FIG. 5, the slide valve G ′ is displaced from the open position to the closed position. Thus, the closing operation is completed.
In the present embodiment, the rotation guide portion of the guide groove 22 is configured by the closed position side rotation guide portion 22a and the open position side rotation guide portion 22b, but the rotation guide portion may be configured by a uniform one. I do not care. Further, the lead angles αa and αb of the rotation guiding portions 22a and 22b are not uniform and can be appropriately modified, for example, gradually decreasing from the closed position side to the open position side.

[Reset means]
As shown in FIG. 5, the gas stopper according to the present embodiment shuts off the gas supply when a gas g having a flow rate higher than a certain level flows. Therefore, as shown in FIG. Is provided, and a reset means R is provided for resetting the excessive outflow prevention mechanism H when it is in an activated state.
Here, since the configuration of the reset means R is substantially the same as that of the first embodiment, a detailed description thereof is omitted, but its operation will be described with reference to FIGS.
The reset means R is connected to the connection portion Ra on the upstream side of the slide valve G ′, and from the belt-like member R1 having a pressing operation portion R2 that contacts the operated member H3 of the excessive outflow prevention mechanism H and performs a reset operation. It is configured.
When the operation portion 11 of the operation mechanism portion B is pressed, the slide valve G ′ is in the open position, and the strip member R1 is in the operation release posture, the gas g can flow through the specific gas flow passages 1A and 1B. In such a state, when the gas g having a flow rate of a certain level or more flows, the overflow prevention valve H2 is positioned at the operating position (position shown in FIG. 9).
Here, when the operation portion 11 of the operation mechanism portion B is pressed again, the slide valve G ′ moves from the open position to the closed position (movement from FIG. 9 to FIG. 5), and the belt-shaped member R1 is moved. A tensile force is applied to change from the operation release posture to the operation posture, the pressing operation portion R2 of the strip member R1 comes into contact with the operated member H3 of the overflow prevention valve H2, and the reset operation is performed.

<Third Embodiment>
The third embodiment is different from the second embodiment in the configuration of the belt-like member R1 as the reset means R. Therefore, in the following, the belt-shaped member R1 will be described with reference to FIGS. 12 to 14, and the description of other configurations may be omitted.
In the third embodiment, when the overflow prevention valve H2 is in the operating position (position shown in FIG. 13), the belt-like member R1 is given a pressing force upstream of the gas inflow passage 1A. In the axial direction of the gas inflow path R1, it moves from the outer side to the axial center side (moving from FIG. 12 to FIG. 14), contacts the operated member H3 of the overflow prevention valve H2, and performs a reset operation. When a tensile force is applied to the downstream side of the gas inflow path R1, the member to be operated moves from the axial center side to the outside in the axial diameter direction of the gas inflow path R1 (movement from FIG. 14 to FIG. 12). A pressing operation portion R2 is provided to release the reset operation away from H3.
When the description is added, in the third embodiment, as shown in FIG. 12, a plurality of belt-like members are extended from the connection portion Ra of the slide valve G ′ to the operated member H3 side of the overflow prevention valve H2. R1 (two in the present embodiment) is provided, and a plurality of pressing operation parts R2 (two in the present embodiment) are provided at the end of the strip-shaped member R1 on the operated member H3 side.
When a pressing force is applied to the belt-like member R1, the pressing operation portion R2 moves from the outer side to the axial center side in the axial direction of the gas inflow passage 1A (moving from FIG. 12 to FIG. 14), When a tensile force is applied to the strip member R1 while abutting the operated member H3, the pressing operation portion R2 moves from the axial center side to the outside in the axial direction of the gas inflow passage 1A (FIGS. 14 to 12). To move away from the operated member H3.

<Another embodiment>
(1) In the first and second embodiments, the gas flow passage 1 is provided in a straight line with the same central axis in a plurality of flow path portions. For example, as shown in FIG. The central axis in the upstream part (the first flow path part 1a and the second flow path part 1b) and the central axis in the downstream part (the third to seventh flow path parts 1c to 1g) of the gas flow path 1 flow. It is also possible to form a straight gas flow passage 1 shifted in the path diameter direction. Thus, providing 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 and second embodiments, but as shown in FIG. What shifted in the flow path radial direction is also included.
In the same manner as in the first and second embodiments, the one shown in FIG. 4 is also suitable for the reset operation by the reset unit and the release of the reset operation while simplifying the configuration of the reset unit and reducing the number of members. It can be carried out.

(2)
In the said 3rd Embodiment, although the example which provides strip | belt-shaped member R3 and its press operation site | part R2 was shown, separately, you may be one and may provide three or more. Absent.

(3) 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.

  As described above, it is possible to provide a gas stopper that can simplify the configuration of the reset means and reduce the number of members, and can appropriately perform the reset operation and the reset operation by the reset means.

1 Gas flow passage 1ca Inner peripheral surface (guide wall)
1cb upstream side (guide wall)
2 Gas stopper body G Slide valve G1 First valve body (pressing force / tensile force applying member)
H2 Overflow prevention valve H3 Operated member (operated part)
R reset means R1 strip member R2 pressing operation part

Claims (9)

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 operation is an operation of pressing the operated portion of the overflow prevention valve to the upstream side of the gas flow path,
The reset means changes its posture to an operation posture in which the reset operation is performed in contact with the operated portion when receiving either a pulling force to the downstream side or a pressing force to the upstream side of the gas flow passage. At the same time, a posture is set to an operation release posture in which the reset operation is released away from the operated portion when either the tensile force to the downstream side of the gas flow passage or the pressing force to the upstream side is received. A belt-like member housed in the gas flow passage in a changed state;
A gas that is connected to the belt-like member and includes a pressing force / tensile force applying member that can freely apply the tensile force and the pressing force by moving the slide valve between the closed position and the open position. plug.   The intermediate member in the longitudinal direction of the belt-like member is a pressure that abuts against the operated portion and presses the operated portion upstream of the gas flow passage when the belt-like member is changed to the operation posture. The gas stopper according to claim 1, further comprising an operation part.   The belt-shaped member is formed in an annular shape, and is housed in the gas flow passage in a state in which the pressing operation portion is arranged at a position facing the operated portion in the axial direction of the gas plug main body. Item 3. The gas stopper according to Item 2.   2. The annular belt-shaped member is connected to an upstream end portion of the slide valve, and the pressing force / tensile force applying member is configured at an upstream end portion of the slide valve. The gas stopper according to any one of -3.   A guide wall portion that contacts the belt-like member and guides the posture change of the belt-like member when the belt-like member receives the tensile force and when the belt-like member receives the pressing force, respectively. The gas stopper according to any one of claims 1 to 4.   The gas stopper according to any one of claims 1 to 5, wherein the belt-shaped member is formed of an elastic body that can be elastically deformed.   The said gas flow path is provided with the said excessive outflow prevention valve, the said reset means, and the said slide valve in order from the upstream, and is provided in the linear form along the axial direction of the said gas stopper main body. The gas stopper according to any one of claims.   The gas plug according to any one of claims 1 to 7, wherein the slide valve moves between the closed position and the open position in accordance with mounting and removal of a gas connector on the gas plug main body.   The gas stopper according to any one of claims 1 to 7, wherein the slide valve moves between the closed position and the open position in accordance with a pressing operation with respect to an operation unit.

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