JP2012207782A - Gas cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform reset operation and releasing of reset operation by a reset means, while simplifying the configuration of the reset means and reducing the number of members thereof.SOLUTION: The reset operation is operation to press an operated part H3 in an excess outflow stop valve H2 to an upstream side of a gas flow path 1, and the reset means R includes a pressing operation unit R1 formed integrally with a slide valve G so as to extend from an upstream side end of the slide valve G to the upstream side of the gas flow path 1, and a movement conversion mechanism R2 for converting movement of the slide valve G between a closing position and an opening position into movement of the pressing operation unit R1 for making the pressing operation unit R1 perform reset operation by bringing the pressing operation unit R1 into direct contact with the operated part H3.

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 pressing the upstream side of the passage to open the gas flow 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 exceeds a certain level, due to the flow pressure of the gas flow rate exceeding 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 Documents 1 and 2).
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.

  In the gas stopper described in Patent Document 2, the operated portion of the overflow prevention valve is provided so as to be movable in the axial direction of the gas stopper main body, and the operated portion is subjected to a reset operation for pressing the upstream side of the gas flow passage. Thus, the overflow prevention valve located at the operating position is returned to the initial position. The reset means includes an ohmic symbol-shaped leaf spring provided at the upstream end of the slide valve, and a pin supported so as to be movable in the axial direction of the gas plug body. When the gas connector is attached to the gas plug body, if the slide valve moves from the closed position to the upstream side of the gas flow passage, the slide valve and the leaf spring move together, and both ends of the leaf spring become pins. A reset operation is performed in which the pin is pressed and moved to the upstream side, and the operated portion is pressed to the upstream side of the gas flow passage by the pin by the pressing movement of the pin. Further, when the slide valve further moves to the upstream side of the gas flow passage, both ends of the leaf spring are expanded in diameter, and the pin is fitted between both ends, so that the contact between the leaf spring and the pin is released. The reset operation has been cancelled.

  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 3) 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 on-off valve (see, for example, Patent Document 4) that opens and closes by sliding the valve is known, and the gas plug is configured to be a push-push type as well as the on-off valve. It is hoped that.

Japanese Utility Model Publication No. 3-65071 Japanese Patent Laid-Open No. 10-169812 Japanese Examined Patent Publication No. 02-021660 Japanese Patent Laid-Open No. 02-154918

  In the gas stopper described in the above-mentioned Patent Document 1, in addition to the pushing protrusion, two swing members, a first lever and a second lever, are provided between the slide valve and the shaft portion of the overflow prevention valve. Thus, the reset operation and the reset operation are canceled. Further, in the gas stopper described in Patent Document 2, a pin that is movable in the axial direction of the gas stopper main body is provided between the slide valve and the operated portion of the overflow prevention valve in addition to the leaf spring. The reset operation and the reset operation are canceled. As described above, in the gas stoppers described in Patent Documents 1 and 2, the reset operation is not performed on the operated portion with the pressing protrusion or the leaf spring, but the pressing protrusion or the leaf spring and the operated portion are operated. Another member must be provided between the two parts, resulting in a complicated configuration and an increased number of members. In addition, in the gas stoppers described in Patent Documents 1 and 2, the movement associated with the movement of the slide valve is transmitted to the shaft portion and the operated portion of the overflow prevention valve via another member to perform the reset operation and the reset operation. Since the release is performed through another member, it is difficult to reliably transmit the movement accompanying the movement of the slide valve to the shaft portion or the operated portion of the overflow prevention valve. There was a possibility that the reset operation could not be canceled reliably. In addition, if the movement associated with the movement of the slide valve is to be transmitted to the operated part with certainty, the arrangement position of another member must be adjusted accurately, or another member must be manufactured with high accuracy. Such problems also occur.

  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.

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 characteristic configuration of which is the operated operation in the overflow prevention valve The reset means 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. The For the movement of the slide valve between the pressing operation portion and the closed position and the opening position, the reset operation is performed at the pressing operation portion by bringing the pressing operation portion into direct contact with the operated portion. And a motion conversion mechanism that converts the motion to the motion of the pressing operation unit.

  According to this feature configuration, when the slide valve moves between the closed position and the open position, the pressing operation unit moves integrally with the slide valve, but the movement of the slide valve is controlled by the motion conversion mechanism. It is converted into a movement of the pressing operation unit that is brought into direct contact with the unit and causes the pressing operation unit to perform a reset operation. For example, the motion conversion mechanism causes the pressing operation part to directly contact the operated part during the movement of the slide valve to perform a reset operation, and when the slide valve finishes moving, the pressing operation part is separated from the operated part to reset. The movement of the slide valve can be converted into the movement of the pressing operation unit so as to release the operation. Further, for example, when the slide valve moves from the closed position to the open position, the motion conversion mechanism rotates the pressing operation unit around the axis along the gas flow direction of the gas flow passage, and the pressing operation unit is in the middle of the rotation. The slide valve moves to the movement of the pressing operation unit so that the reset operation is performed by directly contacting the operated unit with the operated unit, and at the end of the rotation, the pressing operation unit is separated from the operated unit to release the reset operation. Can be converted. Furthermore, for example, the motion conversion mechanism not only moves the pressing operation unit along the gas flow direction of the gas flow path, but also rotates the pressing operation unit around the axis along the gas flow direction of the gas flow path, The movement of the slide valve can be converted into the movement of the pressing operation unit so that the reset operation is performed by bringing the pressing operation unit into direct contact with the operated portion. Therefore, as the reset means, it is only necessary to form the pressing operation unit integrally with the slide valve and to include a motion conversion mechanism, simplify the configuration of the reset means and reduce the number of members, and perform the reset operation and reset operation. Release can be made. In addition, since the movement conversion mechanism converts the movement of the slide valve into the movement of the pressing operation unit so that the pressing operation unit directly contacts the operated unit, the operation converting mechanism presses the operated unit upstream of the gas flow passage. The reset operation can be performed reliably.

Further features of the gas stopper of the present invention are as follows:
The motion conversion mechanism moves the slide valve so that the reset operation is performed by the press operation unit during the movement of the slide valve between the closed position and the open position. It is in the point that has been converted to movement.

  According to this feature configuration, the motion conversion mechanism causes the pressing operation portion to directly contact the operated portion during the movement of the slide valve between the closed position and the open position, and performs the reset operation. The movement of the slide valve can be converted into the movement of the pressing operation section so that the reset operation is released by separating the pressing operation section from the operated section at the end of the movement of the slide valve with respect to the open position. Accordingly, the movement of the slide valve can appropriately convert the movement of the pressing operation unit for performing the reset operation and the reset operation, 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:
A first operation position where the pressing operation unit is brought into direct contact with the operated part and the reset operation is performed by the pressing operation part, and the reset operation is performed by separating the pressing operation part from the operated part. The first operation release position to be released is set to a position that is different in the circumferential direction around the axis along the gas flow direction of the gas flow passage, and the motion conversion mechanism is configured such that the slide valve is different from the closed position. When moving between the open positions, the slide operation conversion state for moving the pressing operation unit along the gas flow direction of the gas flow path and the axis around the gas flow direction of the gas flow path The movement of the slide valve is converted into the movement of the pressing operation unit in the form of switching to the rotational motion conversion state in which the pressing operation unit is rotated.

  According to this characteristic configuration, when the motion conversion mechanism is switched to the slide movement conversion state, the movement of the slide valve along the gas flow direction may be converted as it is as the movement of the pressing operation unit. Can be simplified. Since the first operation position for performing the reset operation and the first operation release position for canceling the reset operation are set at different positions in the circumferential direction around the axis along the gas flow direction of the gas flow passage, The motion conversion mechanism is switched to the rotational motion conversion state, the pressing operation unit is rotated around the axis along the gas flow direction, and after passing through the first operation position, the pressing operation unit is rotated to the first operation release position. be able to. Thereby, when the pressing operation unit passes the first operation position, the reset operation can be performed, and finally, the pressing operation unit can be positioned at the first operation release position to cancel the reset operation. it can. Therefore, while simplifying the configuration of the motion conversion mechanism, the reset operation and the release of the reset operation can be appropriately and reliably performed by converting the movement of the slide valve into the movement of the pressing operation unit.

Further features of the gas stopper of the present invention are as follows:
A second operation position in which the pressing operation portion is brought into direct contact with the operated portion and the reset operation is performed by the pressing operation portion, and the reset operation is performed by separating the pressing operation portion from the operated portion. The second operation release position to be released is set to a position different in the circumferential direction around the axis along the gas flow direction of the gas flow passage, and the motion conversion mechanism is configured such that the slide valve is located at the closed position. When moving between the open positions, the movement of the slide valve is performed in a form in which the pressing operation unit is rotated around the axis along the gas flow direction of the gas flow path from the start of movement to the end of movement. It is in the point converted into the movement of the pressing operation part.

  According to this feature configuration, the second operation position for performing the reset operation and the second operation release position for releasing the reset operation are set at different positions in the circumferential direction around the axis along the gas flow direction of the gas flow passage. The movement converting mechanism rotates the pressing operation portion around the axis along the gas flow direction of the gas flow path from the start of movement of the slide valve to the end of movement, so that the second operation position is passed through the second operation position. The pressing operation unit can be rotated to the operation release position. Thereby, when the pressing operation unit passes the first operation position, the reset operation can be performed, and finally, the pressing operation unit can be positioned at the first operation release position to cancel the reset operation. it can. And since a motion conversion mechanism only converts the movement of a slide valve into the rotational motion of a press operation part, the structure can be simplified.

Further features of the gas stopper of the present invention are as follows:
A support member that supports the slide valve is provided in the gas flow passage so as to be slidable in a gas flow direction of the gas flow passage, and the motion conversion mechanism is formed in an engagement guide groove formed on an outer periphery of the support member. And an engaged portion formed on the inner wall portion of the gas flow passage and engaged with the engagement guide groove.

  According to this configuration, the engaged portion engages with the engagement guide groove, so that the support member is moved as it is along the axial direction of the gas plug body or the support member is moved around the axis along the gas flow direction. And the pressing operation unit can be moved along the axial direction of the gas plug main body, or the pressing operation unit can be rotated around the axis along the gas flow direction. In this manner, the movement of the slide valve can be appropriately converted into the movement of the pressing operation portion by a simple configuration in which the engaged portion is engaged with the engagement guide groove.

Further features of the gas stopper of the present invention are as follows:
A third operation position in which the pressing operation unit is brought into direct contact with the operated part and the reset operation is performed by the pressing operation part, and the reset operation is performed by separating the pressing operation part from the operated part. The third operation release position to be released is set to a position different in the gas flow direction of the gas flow passage, and the motion conversion mechanism moves the slide valve between the closed position and the open position. In this case, the movement of the slide valve is converted into the movement of the pressing operation unit in a form in which the pressing operation unit is moved along the gas flow direction of the gas flow path from the movement start to the movement end. is there.

  According to this feature configuration, the third operation position for performing the reset operation and the third operation release position for canceling the reset operation are set to different positions in the gas flow direction, and the motion conversion mechanism starts moving the slide valve. Since the pressing operation portion is moved along the gas flow direction from the end of the movement to the end of the movement, the pressing operation portion can be moved to the third operation release position after passing the third operation position. Thereby, when the pressing operation unit passes the third operation position, the reset operation can be performed, and finally, the pressing operation unit can be positioned at the third operation release position to release the reset operation. it can. And the motion conversion mechanism should just convert the movement of the slide valve along a gas distribution direction as a movement of a press operation part as it is, and can make the structure of a motion conversion mechanism simple.

Further features of the gas stopper of the present invention are as follows:
When the pressing operation unit reaches the third operation position, the pressing operation unit is allowed to move along the gas flow direction of the gas flow passage by further movement of the slide valve, A contact portion for contacting the pressing operation portion and the operated portion is provided.

  When the pressing operation unit reaches the third operation position, a reset operation is performed in which the pressing operation unit comes into contact with the operated unit and presses the upstream side of the gas flow path. If the contact remains, the movement of the pressing operation part is restricted by the contact, and the pressing operation part may not reach the third operation release position. Therefore, according to this characteristic configuration, when the pressing operation unit reaches the third operation position, the slide valve moves further upstream of the gas flow path to move upstream of the gas flow path from the third operation position. In this state, a contact portion is provided that makes the pressing operation portion and the operated portion contact, and the pressing operation portion can be moved to the third operation release position by the contact portion. Therefore, even when the third operation position for performing the reset operation and the third operation release position for canceling the reset operation are set to different positions in the gas flow direction, the third operation position is finally passed through the third operation position. The pressing operation unit can be appropriately moved to the three operation release positions.

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 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.

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.

  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 view showing the main part of the gas stopper Perspective view showing the main part of the gas stopper Sectional drawing which shows the movement of the gas stopper in 2nd Embodiment Sectional drawing which shows the movement of the gas stopper in 3rd Embodiment Sectional drawing which shows the movement of the gas stopper in 3rd 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 4th Embodiment The disassembled perspective view which shows the slide valve and operation mechanism part of the gas stopper of 4th 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 4th Embodiment Side sectional view which shows the state in the middle of closing operation of the gas stopper of 4th Embodiment Side sectional view which shows the state at the time of closing of the gas stopper of 4th Embodiment Explanatory drawing explaining the transition state of the position of the guide pin in the guide groove at the time of the closing operation in 4th 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 4th 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 is composed of a plurality of flow passage portions 1a to 1f whose flow passage diameters are changed, and the overflow prevention valve H2 is sequentially arranged from the upstream side in the gas flow direction (the X direction in FIGS. 1 and 2). Are provided with an excessive outflow prevention mechanism H, a reset means R, and a slide valve G. 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. , A sixth flow path portion 1f is 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 portion 1c is formed with a channel diameter smaller than that of the second channel portion 1b. The fourth flow path part 1d is formed with a larger flow path diameter than the third flow path part 1c, and the fifth flow path part 1e is formed with a smaller flow path diameter than the fourth flow path part 1d. The sixth flow path portion 1f is formed in an inclined shape that makes the flow path diameter smaller on the downstream side than on the upstream side, and communicates with the 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 a fifth flow path portion 1e in the gas flow passage 1, and a second valve body G2 capable of closing a sixth flow path portion 1f in the gas flow passage 1. And a support member G3 that supports the first valve body G1 and the second valve body G2. The support member G3 is provided in the gas flow passage 1 so as to be movable in the axial direction of the gas plug main body 2, fixedly supports the first valve body G1, and supports the second valve body G2 on the shaft of the gas plug main body 2. Supports movement in the direction. As shown in FIG. 5, a plurality of notches G4 that allow gas to flow around the support member G3 are provided at intervals in the circumferential direction at the downstream portion of the support member G3.

  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 fourth flow path part 1d 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 fifth flow passage portion 1e, and the valve seat portion on which the first valve body G1 is seated is the fifth flow passage portion 1e. It consists of an inner wall. The first valve element G1 is located at a closed position that closes the fifth flow path part 1e when moved to the fifth flow path part 1e, and an open position that allows gas flow when moved to the fourth flow path part 1d. 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 fifth flow path portion 1e is closed.

The second valve body G2 is provided so as to be movable along the axial direction of the gas plug body 2 over the fifth flow path part 1e and the sixth flow path part 1f. 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 sixth flow passage portion 1f, and the valve seat portion on which the second valve body G2 is seated and closed is provided. It is comprised in the inclination site | part of the 6th flow-path part 1f. The second valve body G2 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 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. Thus, the sixth flow path portion 1f is closed.
In this way, both the first valve body G1 and the second valve body G2 constituting the slide valve G are movable between the closed position and the open position along the axial direction of the gas plug body 2, and the gas The flow passage 1 is biased so as to return to the closed position.

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

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

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

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

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

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

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

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

  The reset means R prevents excessive outflow during the movement of the slide valve G from the open position to the closed position in the axial direction of the gas stopper body 2 when the gas connector 100 is detached from the gas stopper body 2. In order to return the valve H2 to the initial position (in order to reset it), a reset operation for pressing the head portion H3b of the operated member H3 to the upstream side of the gas flow passage 1 is performed. The reset operation for the head H3b of the member H3 is configured to be released. Further, the reset means R is provided with an excessive outflow prevention valve H2 in the course of moving the slide valve G from the closed position to the open position in the axial direction of the gas stopper body 2 when the gas connector 100 is mounted on the gas stopper body 2. Is reset to press the head H3b of the operated member H3 toward the upstream side of the gas flow passage 1 to return the operating member H3 to the initial position. It is configured to release the operation.

The reset means R includes a pressing operation portion R1 formed integrally with the first valve body G1 so as to extend from the upstream end portion of the first valve body G1, which is a slide valve G, to the upstream side of the gas flow passage 1. A pressing operation unit that causes the pressing operation unit R1 to directly contact the head H3b of the operated member H3 to perform a reset operation in the pressing operation unit R1 when the slide valve G is moved between the closed position and the opening position. And a motion conversion mechanism R2 that converts the motion into the motion of R1.
The pressing operation portion R1 is configured by a protrusion that extends upstream of the gas flow passage 1 and has an upstream end that is spherical, and is integrally formed with the first valve body G1. The motion conversion mechanism R2 changes the movement of the slide valve G to the movement of the pressing operation unit R1 so that the reset operation is performed by the pressing operation unit R1 during the movement of the slide valve G between the closed position and the opening position. It has been converted.

  As described above, the reset operation is an operation in which the pressing operation portion R1 is brought into direct contact with the head H3b of the operated member H3 and the head H3b is pressed upstream of the gas flow passage 1. Therefore, as shown in FIG. 3, the first operation position (see FIG. 3 (d)) in which the pressing operation portion R1 is brought into direct contact with the head H3b of the operated member H3 and the reset operation is performed in the pressing operation portion R1. ) And the first operation release position (FIGS. 3B and 3C) that releases the reset operation by separating the pressing operation portion R1 from the head H3b of the operated member H3. They are set at different positions in the circumferential direction around the axis along the flow direction.

  The head H3b of the operated member H3 is disposed at an eccentric position deviated from the central portion of the gas flow passage 1 in the flow path radial direction toward the end portion, and the first operation position is as shown in FIG. Furthermore, the eccentric position is such that the pressing operation portion R1 directly contacts the head H3b arranged at the eccentric position. On the other hand, the first operation release position is a position different from the first operation position in the circumferential direction around the axis of the gas flow passage 1 as shown in FIGS. The operation portion R1 is positioned to be separated from the head H3b of the operated member H3. Moreover, in Fig.3 (a), it is the position which separates press operation part R1 from the head H3b of the to-be-operated member H3 in the axial direction of the gas stopper main body 2. FIG.

  As shown in FIGS. 4 and 5, the motion conversion mechanism R2 includes an engagement guide groove R3 formed on the outer periphery of a support member G3 that supports the first valve body G1 and the second valve body G2, and a gas flow path 1. A protrusion-like engaged portion R4 that is formed on the inner wall portion and engaged with the engagement guide groove R3. The support member G3 is provided in the gas flow passage 1 so as to be slidable in the gas flow direction of the gas flow passage 1. In the engagement guide groove R3, the upstream portion of the gas flow passage 1 is a linear straight groove R3a along the gas flow direction, and a continuous portion that continues from the downstream end of the straight groove R2c to the downstream side is formed. This is an inclined groove R3b. Thus, when the engaged portion R4 is engaged and guided in the linear groove R3a during the movement of the slide valve G, the support member G3 is moved along the axial direction of the gas plug main body 2 as it is and pressed. The operation portion R1 is switched to a slide movement conversion state in which the operation portion R1 is moved along the gas flow direction of the gas flow passage 1. Further, when the engaged portion R4 is engaged and guided in the inclined groove R3b during the movement of the slide valve G, the support member G3 is rotated around the axis along the gas flow direction of the gas flow passage 1. The pressing operation portion R1 is switched to the rotational motion conversion state in which the pressing operation portion R1 is rotated around the axis along the gas flow direction of the gas flow passage 1. As described above, the motion conversion mechanism R2 converts the movement of the slide valve G into the movement of the pressing operation portion R1 in a form of switching between the slide movement conversion state and the rotational motion conversion state.

When the slide valve G moves from the closed position to the open position, the motion conversion mechanism R2 is in the slide movement conversion state at the initial stage of the movement so that the state shown in FIG. 3A is changed to the state shown in FIG. As described above, the pressing operation portion R1 is moved upstream along the gas flow direction, and then the slide movement conversion state is switched to the rotational movement conversion state, and the gas flow passage 1 is pressed around the axis along the gas flow direction. The operation unit R1 is rotated. Then, the motion conversion mechanism R2 rotates the pressing operation portion R1 to the first operation release position after passing through the first operation position in the state switched to the rotational motion conversion state.
Conversely, when the slide valve G moves from the open position to the closed position, the motion conversion mechanism R2 is changed from the state shown in FIG. 3C to the state shown in FIG. As the rotational motion conversion state, the pressing operation portion R1 is rotated around the axis along the gas flow direction of the gas flow passage 1, and then the rotational motion conversion state is switched to the slide movement conversion state, along the gas flow direction. The pressing operation portion R1 is moved downstream. Then, the motion conversion mechanism R2 rotates the pressing operation portion R1 by passing the first operation position from the first operation release position in the rotational motion conversion state in the initial stage of movement.

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 motion conversion mechanism R2 engages and guides the engaged portion R4 to the upstream end of the engagement guide groove R3, and the head of the operated member H3 in the gas flow direction by this engagement guide. The pressing operation portion R1 is positioned at a position away from H3b.

  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, the motion conversion mechanism R2 converts the movement of the slide valve G into the movement of the pressing operation portion R1 by engaging and guiding the engaged portion R4 in the engagement guide groove R3. The motion conversion mechanism R2 sets the slide movement conversion state in the initial stage of the movement of the slide valve G, moves the pressing operation portion R1 upstream along the gas flow direction of the gas flow passage 1, and then switches to the rotational motion conversion state. Thus, the pressing operation portion R1 is rotated around the axis along the gas flow direction of the gas flow passage 1. Then, the motion conversion mechanism R2 rotates the pressing operation portion R1 to the first operation release position after passing through the first operation position in the state switched to the rotational motion conversion state. FIG. 3B shows a state in which the pressing operation unit R1 is rotated to the first operation release position.

  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 is moved from the open position to the closed position by the urging force of the first urging member F1 and the second urging member F2. At this time, the motion conversion mechanism R2 converts the movement of the slide valve G into the movement of the pressing operation portion R1 by engaging and guiding the engaged portion R4 in the engagement guide groove R3. The motion conversion mechanism R2 rotates the pressing operation portion R1 around the axis along the gas flow direction of the gas flow passage 1 as a rotational motion conversion state in the initial movement of the slide valve G. Here, the motion conversion mechanism R2 passes the first operation position from the first operation release position and rotates the pressing operation portion R1. Thereafter, the motion conversion mechanism R2 switches from the rotational motion conversion state to the slide movement conversion state, and moves the pressing operation portion R1 downstream along the gas flow direction of the gas flow passage 1. FIG. 3D shows a state in which the pressing operation unit R1 is rotated to the first operation position.

  In this way, when the slide valve G moves from the open position to the closed position, the motion conversion mechanism R2 passes the first operation position to be brought into contact with the head H3b of the operated member H3 during the movement, At the end of the movement, the pressing operation portion R1 is moved to a position where it is separated from the head H3b of the operated member H3. When the pressing operation portion R1 passes through the first operation position, a reset operation is performed so that the overflow prevention valve H2 can be returned to the initial position, and finally the pressing operation portion R1 is moved to the operated member. The reset operation is canceled by positioning the H3 at a position away from the head H3b, and the movement of the excessive outflow prevention valve H2 from the initial position to the operating position can be permitted.

  The motion conversion mechanism R2 is finally configured in such a manner that the first operation position is passed through even when the slide valve G moves from the closed position to the open position by attaching the gas connector 100 to the gas plug body 2. Since the pressing operation portion R1 is moved to the operation release position, the reset operation is performed not only when the gas connector 100 is detached from the gas stopper body 2, but also when the gas connector 100 is attached to the gas stopper body 2. Thereafter, the reset operation can be canceled.

  When the gas connector 100 is attached to the gas plug body 2, the state shown in FIGS. 3A to 3B is obtained, and the slide valve G is opened from the closed position by the pressing portion 105 of the gas connector 100. Therefore, even when the slide valve G is moved, the motion conversion mechanism R2 is configured to pass the first operation position in a state where the slide motion conversion state is switched to the rotational motion conversion state. Finally, the pressing operation portion R1 is rotated to the first operation release position. Therefore, when the pressing operation unit R1 passes through the first operation position, the reset operation can be performed, and finally, the pressing operation unit R1 is positioned at the first operation release position to release the reset operation. Can do. As described above, the reset operation can be performed both when the gas connector 100 is detached from the gas stopper body 2 and when the gas connector 100 is attached to the gas stopper body 2. The return to the initial position of the excessive outflow prevention valve H2 can be reliably performed.

Second Embodiment
The second embodiment is another embodiment of the first embodiment in which the motion conversion mechanism R2 converts the movement of the slide valve G into the movement of the pressing operation unit R1. 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. 6, the movement of the slide valve G is changed according to any movement of the pressing operation portion R1. The explanation will focus on the conversion to

  In the first embodiment, the motion conversion mechanism R2 engages and guides the engaged portion R4 in the linear and inclined engagement guide grooves R3, so that the slide movement conversion state and the rotational motion conversion state are obtained. The movement of the slide valve G is converted into the movement of the pressing operation unit R1.

  In the second embodiment, as shown in FIG. 6, the engagement guide groove R3 is formed in an inclined shape over the entire length. Then, the motion conversion mechanism R2 engages and guides the engaged portion R4 in the engagement guide groove R3, so that when the slide valve G moves between the closed position and the open position, from the start of the movement. The movement of the slide valve G is converted into the movement of the pressing operation portion R1 in a form in which the pressing operation portion R1 is rotated around the axis along the gas flow direction of the gas flow passage 1 until the end of the movement.

  Similar to the first embodiment, the second operation position in which the pressing operation portion R1 is brought into direct contact with the head H3b of the operated member H3 and the reset operation is performed at the pressing operation portion R1 (see FIG. 6D). ) And the second operation release position (FIGS. 6B and 6C) for releasing the reset operation by separating the pressing operation portion R1 from the head H3b of the operated member H3. They are set at different positions in the circumferential direction around the axis along the flow direction.

When the slide valve G moves from the closed position to the open position, the motion conversion mechanism R2 is configured so that the gas from the start of movement to the end of movement is changed from the state of FIG. 6A to the state of FIG. 6B. The pressing operation portion R1 is rotated around the axis along the gas flow direction of the flow passage 1 to pass the second operation position (see FIG. 6D), and then the second operation release position (FIG. 6B). The pressing operation portion R1 is rotated until the reference).
Conversely, when the slide valve G moves from the open position to the closed position, the motion conversion mechanism R2 changes from the state of FIG. 6 (c) to the state of FIG. 6 (a) through FIG. 6 (d). From the start of movement to the end of movement, the pressing operation portion R1 is rotated around the axis along the gas flow direction of the gas flow passage 1, and the first operation position is passed from the first operation release position to the pressing operation portion R1. Is rotating.

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. 6A shows a state where the gas connector 100 is removed from the gas plug body 2. FIG. 6B shows a state in which the gas connector 100 is mounted on the gas plug body 2. FIG. 6C 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. 6D 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. 6A, 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 motion conversion mechanism R2 engages and guides the engaged portion R4 to the upstream end of the engagement guide groove R3, and the head of the operated member H3 in the gas flow direction by this engagement guide. The pressing operation portion R1 is moved to a position away from H3b.

  As shown in FIG. 6 (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, the motion conversion mechanism R2 engages and guides the engaged portion R4 in the engagement guide groove R3 as the slide valve G moves, and rotates the pressing operation portion R1. The rotation of the pressing operation portion R1 due to the movement of the slide valve G is performed by rotating the pressing operation portion R1 around the axis along the gas flow direction of the gas flow passage 1 from the start of movement to the end of movement. After passing (see FIG. 6D), the pressing operation portion R1 is rotated to the second operation release position (see FIG. 6B). FIG. 6B shows a state in which the pressing operation portion R1 is rotated to the second operation release position.

  As shown in FIG. 6 (c), when the gas flow rate becomes an overflow rate above a certain level, the overflow prevention valve H <b> 2 is 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. 6 (d), when the gas connector 100 is removed from the gas plug body 2, the pressure on the upstream side of the gas flow passage 1 against the slide valve G by the pressing portion 105 of the gas connector 100 is released. The slide valve G is moved from the open position to the closed position by the urging force of the first urging member F1 and the second urging member F2. At this time, the motion conversion mechanism R2 engages and guides the engaged portion R4 in the engagement guide groove R3 as the slide valve G moves, and rotates the pressing operation portion R1. The rotation of the pressing operation portion R1 due to the movement of the slide valve G is performed by rotating the pressing operation portion R1 around the axis along the gas flow direction of the gas flow passage 1 from the movement start to the movement end, thereby releasing the second operation. After passing the second operation position from the position, finally, as shown in FIG. 6A, the pressing operation portion R1 is rotated to a position away from the head H3b of the operated member H3 in the gas flow direction. Yes. FIG. 6D shows a state where the pressing operation portion R1 is positioned at the second operation position.

  The motion conversion mechanism R2 is finally configured in such a manner that the second operation position is passed through even when the slide valve G moves from the closed position to the open position by attaching the gas connector 100 to the gas plug body 2. Since the pressing operation portion R1 is moved to the operation release position, the reset operation is performed not only when the gas connector 100 is detached from the gas stopper body 2, but also when the gas connector 100 is attached to the gas stopper body 2. Thereafter, the reset operation can be canceled.

  When the gas connector 100 is attached to the gas plug body 2, the state shown in FIGS. 6A to 6B is obtained, and the slide valve G is opened from the closed position by the pressing portion 105 of the gas connector 100. Therefore, even when the slide valve G is moved, the motion conversion mechanism R2 finally rotates the pressing operation portion R1 to the second operation release position in a form of passing the second operation position. I am letting. Therefore, when the pressing operation portion R1 passes through the second operation position, the reset operation can be performed, and finally, the pressing operation portion R1 is positioned at the second operation release position to release the reset operation. Can do. As described above, the reset operation can be performed both when the gas connector 100 is detached from the gas stopper body 2 and when the gas connector 100 is attached to the gas stopper body 2. The return to the initial position of the excessive outflow prevention valve H2 can be reliably performed.

<Third Embodiment>
Similarly to the second embodiment, the third embodiment is another embodiment in which the movement conversion mechanism R2 converts the movement of the slide valve G into the movement of the pressing operation unit R1. Since the other configuration is the same as that of the first embodiment, the description of the other configuration is omitted. Hereinafter, the movement of the slide valve G is determined based on FIG. 7 and FIG. The explanation will focus on how the motion is converted.

  In the third embodiment, the engagement guide groove R3 and the engaged portion R4 are not provided as in the first and second embodiments, and the motion conversion mechanism R2 is configured such that the slide valve G opens and closes. When moving between the positions, the movement of the slide operation unit R1 is performed by moving the slide operation unit R1 along the gas flow direction of the gas flow path 1 from the start of movement to the end of movement. Has been converted. Then, a third operation position (see FIG. 8 (e)) in which the pressing operation portion R1 is brought into direct contact with the head H3b of the operated member H3 and the reset operation is performed by the pressing operation portion R1, and the pressing operation portion R1. Is moved away from the head H3b of the operated member H3, and the third operation release position (see FIGS. 7B and 7C) for releasing the reset operation is at a position different from the gas flow direction of the gas flow passage 1. Is set.

  When the pressing operation portion R1 reaches the third operation position, the pressing operation portion R1 contacts the head H3b of the operated member H3 and performs a reset operation to press the upstream side of the gas flow passage 1. If the operation portion R1 remains in contact with the head H3b of the operated member H3, the movement of the pressing operation portion R1 is restricted by the contact, and the pressing operation portion R1 may not reach the third operation release position. There is sex. Therefore, when the pressing operation portion R1 reaches the third operation position, the pressing operation portion R1 is allowed to move along the gas flow direction of the gas flow passage 1 by further movement of the slide valve G. An abutting portion R5 that abuts the pressing operation portion R1 and the head H3b of the operated member H3 is provided.

The contact portion R5 is formed at the first press operation portion side contact inclined surface R6a formed at the upstream end portion portion of the press operation portion R1 and the downstream end portion portion of the head portion H3b of the operated member H3. The first operated portion side contact inclined surface R7a. The first pressing operation portion side contact inclined surface R6a is formed in an inclined shape inclined toward the upstream side of the gas flow passage 1, and the first operated portion side contact inclined surface R7a is formed downstream of the gas flow passage 1. It is formed in an inclined shape that is inclined to the side.
When the slide valve G moves from the closed position to the open position, as shown in FIG. 8E, when the pressing operation portion R1 reaches the third operation position, the first pressing operation portion side contact of the pressing operation portion R1. While the contact inclined surface R6a is in contact with the first operated portion side contact inclined surface R7a of the head H3b, a further slide valve is performed while performing a reset operation to press the head H3b to the upstream side of the gas flow passage 1. The movement of G allows the pressing operation portion R1 to move from the third operation position to the upstream side. Here, the operated member H3 is supported by the support member H4 in a state that allows a slight swing, and the first pressing operation portion side contact inclined surface R6a of the pressing operation portion R1 is the first of the head H3b. In addition to the contact with the operated portion side contact inclined surface R7a, the operated member H3 swings to move the pressing operation portion R1 from the third operation position to the upstream side.

At the upstream end portion of the pressing operation portion R1, a second pressing operation portion side contact inclined surface R6b is formed that is adjacent to the downstream side of the first pressing operation portion side contact inclined surface R6a and is inclined downstream. ing. Also on the head portion H3b of the operated member H3, a second operated portion side contact inclined surface R7b is formed adjacent to the upstream side of the first operated portion side contact inclined surface R7a and inclined upstream. .
Although illustration is omitted, when the slide valve G moves from the open position to the closed position, the second pressing operation portion side contact inclined surface R6b of the pressing operation portion R1 is in contact with the second operated portion side of the head H3b. Abutting on the contact inclined surface R7b, the pressing operation portion R1 is allowed to move further downstream than the head H3b by further movement of the slide valve G to the downstream side. Here, the first pressing operation portion side contact inclined surface R6a is formed longer than the second pressing operation portion side contact inclined surface R6b, and the first operated portion side contact inclined surface R7a is also the second operated operation surface. It is formed longer than the part-side contact inclined surface R7b. Accordingly, the reset operation can be reliably performed while the first pressing operation portion side contact inclined surface R6a is in contact with the first operated portion side contact inclined surface R7a, while the second pressing operation portion side. The contact inclined surface R6b is in contact with the second operated portion-side contact inclined surface R7b so that the movement of the slide valve G is not hindered.

Hereinafter, based on FIG.7 and FIG.8, the movement of the slide valve G, the excessive outflow prevention mechanism H, and the reset means R is demonstrated.
FIG. 7A shows a state where the gas connector 100 is removed from the gas plug body 2. FIG. 7B shows a state in which the gas connector 100 is mounted on the gas plug body 2. FIG. 7C 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. 7D shows a state where the gas connector 100 is removed from the gas plug body 2. FIG. 8E shows a state where the gas connector 100 is mounted on the gas plug body 2 and a reset operation is performed.

  As shown in FIG. 7A, 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 pressing operation portion R1 is located at a position away from the head H3b of the operated member H3 in the gas flow direction because the slide valve G is located at the closed position.

  As shown in FIG. 7B, 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, the pressing operation portion R1 moves upstream along the gas flow direction integrally with the slide valve G as the slide valve G moves. When the third operation position is reached, the first press operation portion side contact inclined surface R6a of the press operation portion R1 contacts the first operated portion side contact inclined surface R7a of the head H3b, and the slide valve G further moves. Accordingly, the pressing operation portion R1 is moved from the third operation position to the third operation release position upstream of the third operation position. FIG. 7B shows a state in which the pressing operation portion R1 has moved to the third operation release position upstream of the operation position.

  As shown in FIG. 7 (c), when the gas flow rate exceeds a certain level, the overflow prevention valve H2 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. 7 (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 is moved from the open position to the closed position by the urging force of the first urging member F1 and the second urging member F2. At this time, as the slide valve G moves, the pressing operation portion R1 also moves downstream along the gas flow direction, but the second pressing operation portion side contact inclined surface R6b of the pressing operation portion R1 is located on the head H3b. As shown in FIG. 7 (a), the pressing operation portion R1 finally comes into contact with the second operated portion side contact inclined surface R7b and further moves to the downstream side of the slide valve G, as shown in FIG. It moves to a position away from the head H3b of the operated member H3 in the gas flow direction.

  When the gas connector 100 is attached to the gas stopper body 2 again, as shown in FIG. 8E, the pressing portion 105 of the gas connector 100 presses the slide valve G to the upstream side of the gas flow passage 1, The slide valve G moves from the closed position to the open position to open the gas flow passage 1. At this time, the pressing operation unit R <b> 1 moves along the gas flow direction integrally with the slide valve G as the slide valve G moves. When the pressing operation portion R1 reaches the third operation position, the first pressing operation portion side contact inclined surface R6a of the pressing operation portion R1 comes into contact with the first operated portion side contact inclined surface R7a of the head H3b and presses. The operation unit R1 directly contacts the head H3b to perform a reset operation. By this reset operation, the excessive outflow prevention valve H2 is returned to the initial position. Then, due to the contact between the first pressing operation portion side contact inclined surface R6a and the first operated portion side contact inclined surface R7a, further movement of the slide valve G causes the upstream side from the third operation position. The pressing operation portion R1 has moved to the third operation release position. Finally, as shown in FIG. 7B, the pressing operation portion R1 is moved to the third operation release position at the end of the movement of the slide valve G. The

<Fourth 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 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. 10 and 11, the gas stopper configured as a gas stopper with a knob according to the present embodiment includes a valve housing portion 5, a gas inflow passage 1 </ b> A that opens to the valve housing portion 5, and a gas. The outflow path 1B is accommodated in the gas stopper body 2 formed inside, the valve accommodating part 5, and the valve mechanism part A that opens and closes between the gas inflow path 1A and the gas outflow path 1B, and the operation part 11 An operation mechanism B that opens and closes the valve mechanism A in accordance with the operation is provided.
Hereinafter, detailed configurations of the gas stopper main body 2, the valve mechanism portion A, and the operation mechanism portion B will be sequentially described.

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

(Valve mechanism)
When one of the gas inflow passage 1A and the gas outflow passage 1B is a gas inflow passage 1A, and a specific axis that is an axis of the specific gas flow passage is an axis X of the gas inflow passage 1A, the valve mechanism section A slides along the axis X which is the specific axis and the valve seat 6 formed in the opening 1Aa with respect to the valve accommodating part 5 of the gas inflow path 1A which is the specific gas flow path, and the valve seat 6 Between the closed position where the opening 1Aa is seated and the opening 1Aa slides along the axis X and is spaced apart from the valve seat 6 to open the opening 1Aa. And a slide valve G ′.
That is, the slide valve G ′ slides in the vertical direction along the axis X of the gas inflow passage 1A arranged in the vertical direction. The lower end position of the slide range is a closed position where the slide valve G ′ is seated on the valve seat 6 and closes the opening 1Aa. The upper end position of the same range is the slide valve G ′. It becomes an opening position which spaces apart and opens the opening 1Aa. Therefore, in the present embodiment, the closed position side indicates the lower side, and the open position side indicates the upper side.
In the fourth embodiment, the first valve element G1 is provided with the first notch part G4 and the second notch part G5 allowing the gas flow, and the first valve element in the gas flow passage 1 is provided. The gas is always allowed to flow between the upstream side and the downstream side of G1.
Here, FIGS. 13 and 14 show a state in which the slide valve G ′ is in the closed position, and FIGS. 10 and 12 show a state in which the slide valve G ′ is in the open position.

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

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

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

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

As shown in FIG. 15A, 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 (for example, the left side in FIG. 15A) from 22c. 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 with reference to FIGS. 15 and 16 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. 15 and 16, 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 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 opened (see FIG. 10), the guide pin 18 opens the rotation guide portion 22a in the guide groove 22 as shown in FIG. It is located at the side end (upper right end in FIG. 15A).
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 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. 15B are applied to the guide pin 18 positioned 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 toward 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. 13).
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 as described above is removed, an upward biasing force fd by the coil spring 24 and a rightward application by the torsion coil spring 15 are removed 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. 14, 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. 14), the guide pin 18 is in a position to be locked to the locking portion 22c as shown in FIG. 16 (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 opening position side rotation guiding portion 22a. As a result, as shown in FIG. 10, the slide valve G ′ is displaced from the closed position to the opened position. Thus, the opening operation is completed.
In the present embodiment, the rotation guiding portion of the guide groove 22 is configured by the opening position side rotation guiding portion 22a and the closed position side rotation guiding portion 22b, but the rotation guiding portion may be configured by a uniform one. I do not care. In addition, the lead angles αa and αb of the rotation guide portions 22a and 22b are not uniform and can be appropriately modified, for example, gradually decreasing from the open position side to the close position side.

[Reset means]
Since the gas plug of this embodiment shuts off the gas supply when a gas g having a flow rate above a certain level flows, as shown in FIG. 10, the gas inflow path 1A as a 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, the configurations of the overflow prevention valve H2 and the reset means R are the same as those in the first embodiment, and a detailed description thereof is omitted. However, in the present embodiment, the reset means R is Between the closing position and the opening position, the pressing operation portion R1 formed integrally with the first valve body G1 so as to extend from the upstream end portion of the first valve body G1 to the upstream side of the gas flow passage 1 Conversion mechanism that converts the movement of the slide valve G ′ into a movement of the pressing operation portion R1 that causes the pressing operation portion R1 to perform a reset operation by causing the pressing operation portion R1 to directly contact the head H3b of the operated member H3. The reset operation is performed in such a manner that the pressing operation portion R1 contacts the head H3b of the operated member H3 as the slide valve G ′ moves. That is, when the slide valve G ′ is in the open position, the overflow prevention valve H2 is moved to the operating position to prevent the gas flow (see FIG. 12), and the slide valve G ′ is closed and opened. In the middle of the movement (between FIG. 12 and FIG. 13), the pressing operation unit R1 passes the operation position where the head H3b of the operated member H3 is pressed to perform the reset operation on the head H3b. At the end of the movement of the slide valve G ′ (FIG. 14), the pressing operation unit R1 moves to the operation release position where the reset operation is released. As a result, the seating of the overflow prevention valve H2 on the valve seat portion H6 is released, and the reset operation is performed in such a manner that the overflow prevention valve H2 is returned to the initial position by the urging force of the third urging member F3. Is called.

<Another embodiment>
(1) In the first to fourth 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 it moves, 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 protruding shaft portion of the overflow prevention valve H2 as the operated portion. It is also possible to perform a reset operation on the unit.

(2) In the first to third embodiments, the central axis is the same for all of the plurality of flow path parts constituting the gas flow path 1, and the gas flow path 1 is provided in a straight line. As shown in FIG. 9, the flow path portion constituting the upstream portion of the gas flow passage 1, the flow passage portion constituting the intermediate portion of the gas flow passage 1, and the flow passage portion constituting the downstream portion of the gas flow passage 1. Thus, it is possible to form a straight gas flow passage 1 whose central axis is shifted in the flow path radial direction. Thus, the provision of the gas flow passage 1 in a straight line along the axial direction of the gas plug body 2 is not limited to a straight line as in the first to third embodiments, but as shown in FIG. In addition, a configuration including a channel portion shifted in the channel diameter direction is also included. 9, as in the first to third embodiments, the gas stopper main body 2 itself can be provided in a straight line, and the gas stopper main body 2 can be configured compactly.
FIG. 9 shows an example in which a straight 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. 6 showing the second embodiment and FIG. 7 showing the third embodiment are also carried out by forming the linear gas flow passage 1 shifted in the flow path radial direction. Can do.

(3) In the embodiment of the gas stopper with a knob, the example provided with the reset means R of the embodiment corresponding to FIG. 3 is shown, but not limited thereto, the reset means of the embodiment corresponding to FIGS. Even if R is provided, the object of the present application can be achieved.

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

  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 stopper body G Slide valve G3 Support member H2 Overflow prevention valve H3 Operated member (operated part)
R reset means R1 pressing operation portion R2 motion conversion mechanism R3 engagement guide groove R4 engaged portion R5 contact portion

Claims (10)

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. In the gas stopper provided with 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 passage, and the reset means is arranged on the upstream side of the gas flow passage from the upstream end portion of the slide valve. A pressing operation portion formed integrally with the slide valve so as to extend to the sliding valve, and the movement of the slide valve between the closing position and the opening position is directly applied to the operated portion. A gas stopper provided with a motion conversion mechanism that converts the movement into the movement of the pressing operation unit that is brought into contact with and performs the reset operation by the pressing operation unit.   The motion conversion mechanism moves the slide valve so that the reset operation is performed by the press operation unit during the movement of the slide valve between the closed position and the open position. The gas stopper according to claim 1, wherein the gas stopper is converted into a movement of the gas.   A first operation position where the pressing operation unit is brought into direct contact with the operated part and the reset operation is performed by the pressing operation part, and the reset operation is performed by separating the pressing operation part from the operated part. The first operation release position to be released is set to a position that is different in the circumferential direction around the axis along the gas flow direction of the gas flow passage, and the motion conversion mechanism is configured such that the slide valve is different from the closed position. When moving between the open positions, the slide operation conversion state for moving the pressing operation unit along the gas flow direction of the gas flow path and the axis around the gas flow direction of the gas flow path The gas stopper according to claim 1 or 2, wherein the movement of the slide valve is converted into the movement of the pressing operation unit in a form of switching to a rotational motion conversion state in which the pressing operation unit is rotated.   A second operation position in which the pressing operation portion is brought into direct contact with the operated portion and the reset operation is performed by the pressing operation portion, and the reset operation is performed by separating the pressing operation portion from the operated portion. The second operation release position to be released is set to a position different in the circumferential direction around the axis along the gas flow direction of the gas flow passage, and the motion conversion mechanism is configured such that the slide valve is located at the closed position. When moving between the open positions, the movement of the slide valve is performed in a form in which the pressing operation unit is rotated around the axis along the gas flow direction of the gas flow path from the start of movement to the end of movement. The gas stopper according to claim 1, wherein the gas stopper is converted into a movement of the pressing operation unit.   A support member that supports the slide valve is provided in the gas flow passage so as to be slidable in a gas flow direction of the gas flow passage, and the motion conversion mechanism is formed in an engagement guide groove formed on an outer periphery of the support member. The gas stopper according to claim 3, further comprising an engaged portion that is formed on an inner wall portion of the gas flow passage and is engaged with the engagement guide groove.   A third operation position in which the pressing operation unit is brought into direct contact with the operated part and the reset operation is performed by the pressing operation part, and the reset operation is performed by separating the pressing operation part from the operated part. The third operation release position to be released is set to a position different in the gas flow direction of the gas flow passage, and the motion conversion mechanism moves the slide valve between the closed position and the open position. In this case, the movement of the slide valve is converted into the movement of the pressing operation unit in a form in which the pressing operation unit is moved along the gas flow direction of the gas flow path from the start of movement to the end of movement. The gas stopper according to 1 or 2.   When the pressing operation unit reaches the third operation position, the pressing operation unit is allowed to move along the gas flow direction of the gas flow passage by further movement of the slide valve, The gas stopper according to claim 6, further comprising a contact portion that contacts the pressing operation portion and the operated portion.   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 the above.   The gas plug according to any one of claims 1 to 8, 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 8, 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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