JP5851294B2 - Gas stopper - Google Patents

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.

  The gas outlet as a gas plug as described above is a gas flow from the position where the slide valve is closed at the pressing part provided in the gas connector by attaching the gas connector to which the gas pipe is connected to the gas plug body. The gas is supplied to the gas appliance connected to the gas connector by opening the gas flow path by pressing the opening position on the upstream side of the passage. Since the slide valve is urged so as to return to the closed position by the urging member, by removing the gas connector from the gas plug main body, the pressing by the pressing portion on the slide valve is released, and the urging member The slide valve returns to the closed position by the urging force, and the gas supply to the gas appliance is stopped.

In such a gas stopper, a gas having a flow rate higher than a certain level may flow due to a broken gas pipe connected to the gas connector, and in such a case, it is necessary to stop the gas supply. Therefore, conventionally, an overflow prevention valve is provided that moves from an initial position to an operating position that closes the gas flow passage when the gas flow rate in the gas flow passage becomes a certain level or higher, due to the flow pressure of the gas flow rate above the certain level.
Although the gas flow is blocked by the overflow prevention valve moving to the operating position, it is necessary to return the overflow prevention valve from the operating position to the initial position in order to resume gas supply to the gas appliance. It is. Therefore, the operation of removing the gas connector from the gas plug main body is performed by the user, thereby providing a reset means for performing a reset operation for pressing the operated portion of the overflow prevention valve to the upstream side of the gas flow passage. The overflow prevention valve is returned from the operating position to the initial position by a reset operation by the reset means (see, for example, Patent Document 1).
The reset means not only performs the reset operation by removing the gas connector from the gas stopper body, but also releases the reset operation when the gas connector is attached to the gas stopper body to prevent overflow. It is necessary to allow movement of the valve from the initial position to the operating position.

  In the gas stopper described in Patent Document 1, the reset means includes an L-shaped first lever and a second lever that are swingable about an axis along a flow path radial direction orthogonal to the gas flow direction of the gas flow passage. I have. The first lever is pushed upstream of the gas flow passage by the pushing protrusion provided at the upstream end of the slide valve when the gas connector is mounted on the gas stopper body, and the second lever The second lever is allowed to swing by swinging from the restriction position for restricting the swing to the upstream side of the gas flow passage. The second lever is moved by the urging means so as to swing to the side pressing the upstream portion of the gas flow passage to the shaft portion of the overflow prevention valve protruding to the downstream side of the gas flow passage by moving to the operating position. It is energized. When a gas connector is mounted on the gas plug body, the shaft of the overflow prevention valve protrudes downstream of the gas flow passage by restricting the swing of the second lever by the first lever. The reset operation which presses the axial part of an excessive outflow prevention valve to the upstream of a gas flow path is ensured, and the allowance is canceled. By canceling the reset operation in this way, the overflow prevention valve can be moved from the initial position to the operating position. When the gas connector is removed from the gas plug body, the pushing protrusion presses the first lever and swings to the upstream side of the gas flow passage, thereby swinging the second lever by the biasing force, A reset operation for pressing the shaft portion of the overflow prevention valve to the upstream side of the gas flow passage is performed to return the overflow prevention valve from the operating position to the initial position.

  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.

Japanese Utility Model Publication No. 3-65071 No. 02-021660 Japanese Patent Laid-Open No. 02-154918

In the gas stopper described in Patent Document 1, in addition to the pushing protrusion and the urging means, two rocking members of the first lever and the second lever must be provided as the resetting means. This complicates the configuration and increases the number of members.
In addition, the first lever must be arranged at a position where it can be pressed by the pressing projection and the swing of the second lever can be restricted. The second lever must also be disposed at a position where the swinging of the second lever is restricted by the first lever and the shaft portion of the overflow prevention valve can be pressed upstream of the gas flow passage. Therefore, the arrangement positions of the first lever and the second lever must be adjusted with high accuracy, and it is difficult to perform the reset operation by the reset means and the release of the reset operation.

  The present invention has been made paying attention to such points, and the object thereof is to simplify the configuration of the reset means and reduce the number of members, and to perform reset operations and reset operations by the reset means. The point is to provide a gas stopper.

In order to achieve this object, the gas stopper according to the present invention has a characteristic configuration in which a gas flow passage is formed in a cylindrical gas stopper body between the closed position and the open position. An axially movable slide valve; an overflow prevention valve disposed upstream of the slide valve in the gas flow direction of the gas flow passage; and the slide valve and the overflow prevention valve in the gas flow direction A gas stopper provided with a reset means for performing a reset operation for resetting the overflow prevention valve by movement of the slide valve between the closed position and the open position,
The reset means includes a single swinging member swingable around an axial center along the flow path radial direction of the gas flow passage, and one direction of the slide valve between the closed position and the open position. A pressing member that presses and swings the swinging member in accordance with the movement, and is configured to perform the reset operation by pressing and swinging the swinging member by the pressing member. The pressing action site that presses the moving member is located at an eccentric position deviated from the center in the radial direction of the flow path toward the end.

According to this feature configuration, when the slide valve moves from the closed position to the open position, the swing member is pressed and swung by the pressing member as the slide valve moves. The reset operation and the reset operation can be canceled using the movement. For example, a reset operation is performed by the swing member by biasing the swing member so that the swing member returns to a side opposite to the side that presses and swings by the press member, and the reset operation is performed by the press swing by the press member. Can be released. Alternatively, for example, a reset operation can be performed during the swing of the swing member, and the reset operation can be released when the swing of the swing member is finished.
Thus, according to this feature configuration, by using the pressing swing of the swinging member by the pressing member accompanying the movement of the slide valve, it is possible to perform the reset operation and the reset operation only by providing a single swinging member and the pressing member. The reset operation can be canceled.
In this application, the one-way movement of the slide valve between the closed position and the open position is the movement of the slide valve from the closed position to the open position and the movement of the slide valve from the open position to the closed position. It means one of the movements.

And since the press action site | part which a press member presses a rocking | fluctuation member is arrange | positioned in the eccentric position which remove | deviated from the center part of the flow path radial direction of a gas flow path to the edge part side, the flow path radial direction of a gas flow path Therefore, the rocking member can be used as an installation space for the rocking member from the central part to the one side and the other side, compared with a structure in which the pressing portion is arranged in the central part of the gas flow passage in the flow path radial direction. The installation space can be increased. Therefore, even in a limited space of the gas flow passage, a rocking member having an appropriate shape and size can be provided, and the rocking member can be a single member. In addition, by arranging the pressing portion at the eccentric position, for example, when the swing fulcrum of the swing member is disposed at the center of the gas flow passage in the flow path radial direction, the space for installing the swing member is minimized. While increasing, it is possible to lengthen the distance between the pressing portion and the swing fulcrum of the swing member in the radial direction of the gas flow passage. As a result, the pressing force required to swing the swinging member can be reduced as much as possible, and the pressing swinging of the swinging member by the pressing member accompanying the movement of the slide valve in the axial direction of the gas plug body is appropriate. Can be done.
From the above, as a reset means that can appropriately perform the reset operation and the release of the reset operation using the movement of the slide valve in the axial direction of the gas plug body, a single rocking member and a pressing member are used. The reset means can be simplified and the number of members can be reduced, and the reset operation by the reset means and the release of the reset operation can be appropriately performed. In addition, since the swing member is provided so as to be swingable around the axial center along the flow path radial direction of the gas flow passage, the movement of the slide valve in the axial direction of the gas plug body is used as it is as the pressing member. By simply pressing the swing member, the swing member can be swung. Therefore, for example, compared with a member that swings around the axis along the gas flow direction of the gas flow path, a structural member such as a pressing member that swings the swinging member with the movement of the slide valve is simplified. It can be set as a simple structure.

  The gas stopper according to the present invention is further characterized in that the reset operation is an operation of pressing the operated portion of the overflow prevention valve to the upstream side of the gas flow passage, and the swinging member has a central portion. The part is set as a rocking fulcrum, the one end side part is set as a pressed action part that receives a pressing action at the pressing action part of the pressing member, and the other end part is brought into contact with the operated part to perform the reset operation. The rocking member is configured as a reset operation site, and the rocking fulcrum of the rocking member is located at the center of the gas flow passage in the flow path radial direction.

  According to this characteristic configuration, the reset operation in which the reset operation portion of the swing member abuts on the operated portion and presses the operated portion to the upstream side of the gas flow path by appropriately swinging the swing member is appropriately performed. It can be carried out. Since the central portion of the swing member is a swing fulcrum, one end side portion of the swing member is a pressed portion, and the other end portion of the swing member is a reset operation portion, each part of the swing member The single rocking member can be appropriately configured by effectively utilizing the above. Further, for example, when the pressed action part is pressed upstream of the gas flow passage, the reset operation part can be provided with a swinging member so as to move to the downstream side of the gas flow passage. Thus, when the pressed portion is pressed, the reset operation portion can be moved away from the operated portion, and the reset operation can be easily released accurately. In addition, since the rocking fulcrum of the rocking member is arranged at the center of the gas flow passage in the flow path radial direction, as described above, the pressing action site and the rocking fulcrum of the rocking member in the flow diameter direction of the gas flow passage. The distance between can be increased. As a result, the pressing force required to swing the swinging member can be reduced as much as possible, and the pressing swinging of the swinging member by the pressing member accompanying the movement of the slide valve in the axial direction of the gas plug body is appropriate. Can be done.

  The gas stopper according to the present invention is further characterized in that the pressing member is integrally formed with the slide valve so as to extend from the upstream end of the slide valve to the upstream side of the gas flow passage. It is in.

  According to this characteristic configuration, the pressing member is formed integrally with the slide valve, thereby further simplifying the configuration and reducing the number of members. Moreover, the pressing member is formed so as to extend from the upstream end portion of the slide valve to the upstream side of the gas flow passage, so that the pressing member moves with respect to the swinging member as the slide valve moves from the closed position to the open position. A pressing force can be reliably applied, and the rocking member can be appropriately pressed and swung.

  The gas stopper according to the present invention is further characterized in that the reset means includes first biasing means for biasing the swinging member to return to an operation position for performing the reset operation, One-way movement of the slide valve between the opening position causes the pressing member to press and swing the swinging member to a position deviating from the operation position, and between the closing position and the opening position. The slide valve is configured to release the pressing swinging of the swinging member by the pressing member by the reverse movement of the slide valve.

  According to this characteristic configuration, the swing member is urged so as to return to the operation position where the reset operation is performed by the first urging means, and the slide valve is unidirectional between the open position and the closed position. Since the pressing swinging of the swinging member to the swinging member by the pressing member is released, the swinging member is returned to the operation position by the biasing force of the first biasing means, and the reset operation is performed by the swinging member. Done. On the other hand, when the slide valve moves in the reverse direction, the pressing member swings the swinging member to a position away from the operation position, so that the reset operation can be released. Thereby, both reset operation by a rocking | swiveling member and cancellation | release of reset operation can be performed reliably.

  According to a further characteristic configuration of the gas plug according to the present invention, the reset means urges the swing member to return to an operation release position that is deviated to one side of the swing direction from the operation position where the reset operation is performed. A second urging means configured to move the swing member from the operation position to the operation release position by the pressing member by moving the slide valve in one direction between the closed position and the open position. Pressing and swinging to a position deviating to the opposite side of the swinging direction, and pressing and swinging the swinging member to the swinging member by the reverse movement of the slide valve between the closed position and the open position It is in the point which is comprised so that it may cancel | release.

  According to this characteristic configuration, when the slide valve moves in one direction between the closed position and the open position, the swing member is pressed and swung by the pressing member, and the swing member is operated from the operation position. It is swung to a position deviating from the release position on the opposite side of the swing direction. As described above, when the swinging member is swung from the operation position to a position deviating from the swinging direction away from the operation releasing position, when the pressing swinging to the swinging member by the pressing member is released, The swing member is swung by the biasing force of the second biasing means. Since the second urging means urges the oscillating member to return to the operation release position deviated from the operation position to one side in the oscillating direction, the oscillating member is urged by the urging force of the second urging member. When is swung, it passes through the operation position in the middle of the swing and finally reaches the operation release position. Therefore, the operation position of the swing member can be reliably passed, and the reset operation can be performed reliably by the swing member. In this way, when the swinging member is biased to return to the operation release position, the swinging member is pressed by the pressing member as the slide valve moves in one direction between the closed position and the open position. It swings and swings from the operation position to a position deviating to the opposite side of the swing direction from the operation release position. At this time, the swing member reaches the operation position from the operation release position, and then swings to a position deviated from the operation position. Therefore, the reset operation is performed when the swing member reaches the operation position. be able to. Therefore, the reset operation can be performed both when the slide valve moves from the closed position to the open position and when the slide valve moves from the open position to the closed position. Can be done.

  According to a further characteristic configuration of the gas plug according to the present invention, the gas flow path includes, in order from the upstream side, the overflow prevention valve, the reset means, and the slide valve, along the axial direction of the gas plug main body. The point is that it is provided in a straight line.

  According to this feature configuration, the gas flow passage is provided in a straight line along the axial direction of the gas plug 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.

  Furthermore, 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 with the attachment and removal of the gas connector to the gas plug body. Alternatively, the slide valve can be configured as a so-called push-push type gas stopper so that the slide valve moves between the closed position and the open position in accordance with the pressing operation on the operation unit.

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 which shows the movement of the gas stopper in 2nd Embodiment Sectional drawing of the gas stopper in another embodiment Side sectional view which shows the state at the time of opening of the gas stopper of 3rd Embodiment The disassembled perspective view which shows the slide valve and operation mechanism part of the gas stopper of 3rd 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 3rd Embodiment Side sectional view which shows the state in the middle of closing operation of the gas stopper of 3rd Embodiment Side sectional view which shows the state at the time of closing of the gas stopper of 3rd 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 3rd 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 3rd Embodiment

An embodiment of a gas stopper according to the present invention will be described with reference to the drawings.
[First Embodiment]
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 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.

  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 is a single oscillating member R1 that can oscillate around an axis P along a flow path radial direction (the front and back direction in FIG. 1 and FIG. 2) perpendicular to the gas flow direction of the gas flow passage 1. And a fifth member that urges the swinging member R1 to return to the operation position (see FIGS. 3A and 3D) for resetting the operated member H3 in the overflow prevention valve H2. An urging member F5 (corresponding to the first urging means) and a pressing member R2 that presses and swings the swinging member R1 as the slide valve G moves from the closed position to the open position are provided.

  The swing fulcrum of the swing member R1 is disposed at the center of the gas flow path 1 in the flow path radial direction, and the head H3b of the operated member H3 in the overflow prevention mechanism H is also the flow path diameter of the gas flow path 1. It is arranged at the center of the direction. The pressing portion R2a where the pressing member R2 presses the swinging member R1 is disposed at an eccentric position that deviates from the central portion of the gas flow passage 1 in the flow path radial direction to the end side. The swing member R1 has one end portion thereof as a pressed portion R1a that receives a pressing action at the pressing portion R2a of the pressing member R2, and the other end portion is reset with respect to the head H3b of the member H3 to be operated. As the pressing operation portion R1b for performing the above operation, the central portion is used as a swing fulcrum. As shown in FIG. 1, when the swinging member R1 is located at the operation position, the oscillating member R1 positions the pressed portion R1a at the end of the gas flow passage 1 in the flow path radial direction, and the pressing operation portion R1b. The gas flow passage 1 is formed in an L shape that is positioned at the center in the radial direction of the flow path. In this way, the pressing action portion R2a is disposed at an eccentric position that is deviated from the central portion of the gas flow passage 1 in the flow passage radial direction toward the end portion, and therefore from the central portion in the flow passage radial direction of the gas flow passage 1. It can be used as an installation space for the swing member R1 over one side and the other side. Moreover, when it is located at the operation position, the pressed portion R1a is positioned at the end of the gas flow passage 1 in the flow passage radial direction, and the pressure operation portion R1b is located at the center of the gas flow passage 1 in the flow passage radial direction. Therefore, the pressing operation portion R1b and the head H3b of the operated member H3 can be opposed to each other in the axial direction of the gas plug main body 2, and the reset operation can be appropriately performed.

  The swing member R1 is swung to one side (counterclockwise in the figure) in the swing direction by the fifth biasing member F5 and returned to the operation position (see FIGS. 3A and 3D). It is energized to do. As shown in FIG. 3 (d), the pressing operation portion R1b has an inclined surface, and when the swinging member R1 swings to the operation position, the inclined surface is moved to the head H3b of the operated member H3. A reset operation for pressing the head H3b toward the upstream side of the gas flow passage 1 is performed.

  The pressing member R <b> 2 is integrally formed with the first valve body G <b> 1 so as to have a rod shape that extends from the upstream end of the first valve body G <b> 1 that is the slide valve G to the upstream side of the gas flow passage 1. As shown in FIGS. 3 (b) and 3 (c), the pressing member R2 has a gas flow path along the axial direction of the gas plug body 2 as the slide valve G moves from the closed position to the open position. 1, the swing member R1 is pressed and swung to a position deviated from the operation position to the other side in the swing direction (clockwise in the figure).

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. At this time, the swinging member R1 is biased so as to return to the operation position by the biasing force of the fifth biasing member F5, so that the pressing operation portion R1b of the swinging member R1 is the head of the operated member H3. A reset operation for pressing the portion H3b to the upstream side of the gas flow passage 1 is performed. 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 member R2 presses and swings the swinging member R1 to the other side in the swinging direction (clockwise in the figure), and the swinging member R1 has come off the operating position. Swing to position. By this swinging of the swinging member R1, the reset operation in which the pressing operation portion R1b of the swinging member R1 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 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, the gas flow is blocked by the excessive outflow prevention valve H2 moving to the operating position.

  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 member R2 is separated from the swinging member R1, the pressing swinging by the pressing member R2 with respect to the swinging member R1 is released, and the swinging force is swung by the biasing force of the fifth biasing member F5. The moving member R1 swings to one side (counterclockwise in the figure) in the swing direction and returns to the operation position. When the swinging member R1 returns to the operation position, a reset operation is performed in which the pressing operation portion R1b of the swinging member R1 presses the head H3b of the operated member H3 to the upstream side of the gas flow passage 1. As shown in (a), the overflow prevention valve H2 is returned to the initial position.

[Second Embodiment]
The second embodiment is another embodiment of the first embodiment in which the swinging member R1 is urged to return to the position by the fifth urging member F5. Since the other configuration is the same as that of the first embodiment, the description of the other configuration is omitted. Hereinafter, based on FIG. 4, what kind of swing member R1 is used by the fifth biasing member F5. The explanation will focus on whether the urging is performed so as to return to the position.

  In the first embodiment, as shown in FIG. 3A, the swinging member R1 is biased by the fifth biasing member F5 so as to return to the operation position. On the other hand, in the second embodiment, as shown in FIG. 4A, the swinging member R1 is swung further than the operating position by the fifth biasing member F5 (corresponding to the second biasing means). The oscillating member R1 is urged so as to return to the operation releasing position which is oscillated to one side (counterclockwise in the figure) in the moving direction and deviated from the operating position. In the second embodiment, the swing member R1 is biased so as to return to the operation release position by changing the shape of the swing member R1 with respect to the first embodiment.

Hereinafter, based on FIG. 4, the movement of the slide valve G, the excessive outflow prevention mechanism H, and the reset means R in the second embodiment will be described.
FIG. 4A shows a state where the gas connector 100 is removed from the gas plug body 2. FIG. 4B shows a state in which the gas connector 100 is mounted on the gas plug body 2. FIG. 4C 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. 4D shows a state where the reset operation is performed by removing the gas connector 100 from the gas plug body 2.

  As shown in FIG. 4 (a), when the gas connector 100 is removed from the gas stopper 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 swinging member R1 is biased so as to return to the operation release position by the biasing force of the fifth biasing member F5, so that the pressing operation portion R1b of the swinging member R1 is moved to the operated member H3. The reset operation for pressing the head H3b to the upstream side of the gas flow passage 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. 4 (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, as the slide valve G moves, the pressing member R2 presses and swings the swinging member R1 to the other side in the swinging direction (clockwise in the figure), and the swinging member R1 is moved from the operation release position. It is swung beyond the operation position to a position deviating from the operation position.

  As shown in FIG. 4 (c), when the gas flow rate becomes an overflow rate above a certain level, the overflow prevention valve H 2 is downstream of the gas flow passage 1 along the axial direction of the gas plug body 2 due to the flow pressure of the gas flow rate. The overflow prevention valve H2 moves from the initial position to the operating position. Thereby, the gas flow is blocked by the excessive outflow prevention valve H2 moving to the operating position.

  As shown in FIG. 4 (d), when the gas connector 100 is removed from the gas plug body 2, the pressure on the slide valve G to the upstream side of the gas flow passage 1 by the pressing portion 105 of the gas connector 100 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 member R2 is separated from the swinging member R1, the pressing swinging by the pressing member R2 with respect to the swinging member R1 is released, and the swinging force is swung by the biasing force of the fifth biasing member F5. The moving member R1 swings to one side (counterclockwise in the figure) in the swing direction and passes the operation position. When the swing member R1 passes through the operation position, a reset operation is performed in which the pressing operation portion R1b of the swing member R1 presses the head H3b of the operated member H3 to the upstream side of the gas flow passage 1. The outflow prevention valve H2 is returned to the initial position. As shown in FIG. 4A, the swing member R1 is finally swung to the operation release position by the biasing force of the fifth biasing member F5, and the reset operation is released.

  In the second embodiment, due to the urging force of the fifth urging member F5, the operation release position (see FIG. 4 (a)) deviated from the operation position (see FIG. 4 (d)) to one side in the swing direction. The swing member R1 is urged to return. Therefore, when the slide valve G is positioned at the closed position and the pressing swing of the pressing member R2 to the swinging member R1 is released, the swinging member R1 is moved to the operation release position (FIG. 4) by the biasing force of the fifth biasing member F5. (See (a)). Here, when the gas connector 100 is attached to the gas stopper body 2, the swing member R1 is pressed and swung by the pressing member R2 as the slide valve G moves from the closed position to the open position. Swings to the other side of the direction (clockwise). At this time, the swing member R1 reaches the operation position (see FIG. 4 (d)) from the operation release position (see FIG. 4 (a)) and then deviates from the operation position (FIG. 4 (b) and FIG. 4 (c)). Therefore, the reset operation can be performed when the swing member R1 reaches the operation position. In this way, not only when the slide valve G is moved from the open position to the closed position by removing the gas connector 100 from the gas stopper body 2, the gas connector 100 is attached to the gas stopper body 2. Thus, even when the slide valve G moves from the closed position to the open position, the reset operation can be performed, so that the overflow prevention valve H2 can be reliably returned to the initial position.

[Third 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 gas cock that performs switching between supply and stop of gas to a gas appliance will be described with reference to FIGS. 6 to 12. 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 cock according to the present embodiment includes a valve accommodating portion 5, and a gas inflow passage 1 </ b> A and a gas outflow passage 1 </ b> B that open to the valve accommodating portion 5. However, it is accommodated in the gas stopper main 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 on the operation part 11 And an operating mechanism B that opens and closes the valve mechanism A.
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.
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 the direction opposite to the rotation direction (right direction in FIG. 6). 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. In a form in which the slide valve G ′ is urged upward with respect to the upper surface of H1, the slide portion C including the slide valve G ′ is urged upward along the axis X from the closed position side toward the open position side.

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. 8), 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.

[Overflow prevention mechanism]
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, since the configurations of the overflow prevention valve H2 and the reset means R are the same as those of the second embodiment, a detailed description thereof is omitted, but the projection is formed on the lower surface of the slide valve G ′. The pressing member 7 corresponds to the pressing member R2 of the second embodiment, and the reset operation is performed in such a manner that the pressing member 7 presses and swings the swinging member R1 as the slide valve G moves. That is, in a state where the gas flow is blocked by the outflow prevention valve H2 being moved to the operating position when the slide valve G is in the open position (see FIG. 8), the slide valve G is moved to the closed position and is pressed. 7, when the swinging member R1 is pressed and swung to shift to the other swinging direction (clockwise) (see FIG. 9), the swinging member R1 is moved to the operation release position (see FIG. 8). ) To the operating position (see FIG. 9), the seating of the overflow prevention valve H2 on the valve seat H6 is released, and the overflow prevention valve H2 is returned to the initial position by the urging force of the third urging member F3. In this manner, the reset operation is performed.

[Another embodiment]
(1) In the first and second embodiments, the pressing member R2 is integrally formed with the slide valve G. However, the pressing member R2 is configured by a member different from the pressing member R2, and the pressing member and the other member are separated. It is also possible to connect the members so as to be movable in the axial direction of the gas plug main body 2 integrally.

(2) In the first and second embodiments, the rocking member R1 is formed in an L shape. However, the shape of the rocking member R1 is not limited to the L shape, and other various shapes. Can be adapted.

(3) In the first and second embodiments, the overflow prevention mechanism H includes the operated member H3 separately from the overflow prevention valve H2. For example, the overflow prevention valve H2 is in the operating position. When moved, the shaft portion of the overflow prevention valve H2 protrudes to the downstream side of the gas flow passage 1, and the shaft portion of the overflow prevention valve H2 is operated with the shaft portion of the overflow prevention valve H2 projecting as the operated portion. It is also possible to perform a reset operation on the unit.

(4) In the first and second embodiments, the central axis is the same for all of the plurality of flow path portions constituting the gas flow path 1, and the gas flow path 1 is provided in a straight line. As shown in FIG. 5, a linear shape in which the central axis is shifted in the radial direction of the flow path between the flow path portion constituting the upstream portion of the gas flow passage 1 and the flow passage portion constituting the downstream portion of the gas flow passage 1. The gas flow passage 1 can also be formed. 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. In addition, a configuration including a channel portion shifted in the channel diameter direction is also included. Also in the case shown in FIG. 5, as in the first and second embodiments, the gas stopper main body 2 itself can be provided linearly, and the gas stopper main body 2 can be configured compactly.
FIG. 5 shows an example in which a linear gas flow passage 1 shifted in the flow path radial direction is formed with respect to FIG. 1 showing the first embodiment. Although illustration is omitted, FIG. 4 showing the second embodiment can also be implemented by forming the linear gas flow passage 1 shifted in the flow path radial direction.

  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 Resetting means for performing a resetting operation for resetting the overflow prevention valve by the movement of the slide valve between and the resetting means for simplifying the configuration of the resetting means and reducing the number of members. In addition, the present invention can be applied to various gas stoppers that can cancel the reset operation.

1 Gas flow passage 2 Gas plug body G, G 'Slide valve H Overflow prevention mechanism H2 Overflow prevention valve H3 Operated member (operated part)
R reset means R1 swing member R1a pressed action part R1b pressing operation part R2 pressing member R2a pressing action part F5 fifth urging member (first urging means, second urging means)

Claims (8)

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 includes a single swinging member swingable around an axial center along the flow path radial direction of the gas flow passage, and one direction of the slide valve between the closed position and the open position. A pressing member that presses and swings the swinging member in accordance with the movement, and is configured to perform the reset operation by pressing and swinging the swinging member by the pressing member. The gas stopper is a gas stopper that is disposed at an eccentric position that deviates from the central portion in the flow path radial direction toward the end portion. 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 rocking member has a central portion as a rocking fulcrum, one end side portion as a pressed action portion that receives a pressing action at the pressing action portion of the pressing member, and the other end portion as the operated portion. The gas stopper according to claim 1, wherein the gas stopper is configured as a reset operation part that abuts and performs the reset operation, and a swing fulcrum of the swing member is disposed at a central portion of the gas flow passage in a flow path radial direction.   The gas stopper according to claim 1 or 2, wherein the pressing member is formed integrally with the slide valve so as to extend from an upstream end portion of the slide valve to an upstream side of the gas flow passage.   The reset means includes first urging means for urging the swinging member to return to an operation position where the reset operation is performed, and one reset valve between the closed position and the open position. The oscillating member is pressed and oscillated to a position deviated from the operation position by the pressing member by moving in the direction, and the pressing is performed by moving the slide valve in the reverse direction between the closed position and the open position. The gas plug according to any one of claims 1 to 3, wherein the gas stopper is configured to release a pressing swing of the swinging member by the member.   The reset means includes second urging means for urging the oscillating member to return to an operation release position deviated to one side in the oscillating direction from an operation position where the reset operation is performed, and the closed position When the slide valve moves in one direction with respect to the opening position, the pressing member causes the pressing member to press and swing the swinging member from the operation position to the position opposite to the operation releasing position. 2. It is configured to move the slide valve between the closed position and the open position in a reverse direction to release the pressing swinging of the swinging member by the pressing member. 4. The gas stopper according to any one of 3 above.   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 6, 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 6, wherein the slide valve moves between the closed position and the open position in accordance with a pressing operation on the operation unit.

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