JPH0828731A - Gas cock - Google Patents

Abstract

PURPOSE:To reduce the production cost of a gas cock without scaling up the size of gas cock. CONSTITUTION:A vertical tube 7 made of a resin is fitted fixedly in a vertical hole 32 of a cock body 3. The tubular body 7 is formed with a through hole 75 in which an engaging lug 67 of a valve operating member 6 can move vertically and cannot move in the circumferential direction. Also, the tubular body 7 is formed with a slit 76 extending from the through hole 75 in the circumferential direction. The upper side surface of the slit 76 provide an engaging surface 76a which engages an engaging lug 67 so that the engaging lug 67 cannot move upward and can move in the circumferential direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas plug incorporating a valve body which opens only when the plug body is located at a substantially open position.

[0002]

2. Description of the Related Art A conventional gas plug is equipped with a safety valve for preventing gas leakage by blocking a passage in the gas plug when, for example, a gas pipe connecting the gas plug and a gas device is disconnected. There is one. However, the safety valve does not operate unless the flow rate of the gas flowing through the gas plug becomes larger than that during normal use. For this reason, if the gas pipe comes off when the gas plug is in the half-opened state, the safety valve does not operate and gas continues to leak.

Therefore, in recent gas plugs, another valve element is incorporated in addition to the safety valve (see Japanese Utility Model Publication No. 4-43650 and Japanese Utility Model Publication No. 4-30370). This valve body is designed to open only when the stopper of the gas stopper is located in the substantially open position. Therefore, it is possible to prevent the gas from continuing to leak even if the gas pipe comes off at the time of half opening in which the safety valve does not operate.

The valve body is adapted to be opened and closed by a valve operating member in response to an opening / closing operation of the plug body. That is,
The valve operating member is arranged in the vertical hole formed in the plug body, and is biased by the operating spring from the opening side of the vertical hole toward the rear side. However, when the plug is located at the closed position, the engaging projection formed on the valve operating member engages with the engagement surface formed on the plug to move the vertical hole to the inner side. Has been blocked. However, when the plug body is rotated from the closed position to the substantially open position, the engaging convex portion enters the engaging concave portion formed in the plug body and can move in the same direction. As a result,
The valve operating member is moved in the same direction by the operating spring. At this time, the valve element is locked by the valve operating member and moves together with the valve operating member. As a result, the valve body opens.

On the other hand, when the plug body is rotated from the open position to the closed position side, since the engaging convex portion of the valve operating member has entered the engaging concave portion, the valve operating member rotates together with the plug body. . When the valve operating member slightly rotates, the engagement between the valve operating member and the valve body is released, and the valve body is moved to the opening side of the vertical hole by the valve spring to close the valve. When the stopper is further rotated, the valve operating member is moved by the cam mechanism against the biasing force of the operating spring. Then, when the stopper is rotated to the substantially closed position, the engaging convex portion comes out of the engaging concave portion, and the valve operating member is rotated by the valve spring while the engaging convex portion is in contact with the engaging surface. Return to the original position.

Here, in the gas plugs described in the above two publications, the engaging recess and the engaging surface are formed in the plug body, but there are also those in which these are formed in the plug body (Jitsuko Sho 61-31).
No. 250). However, when the engaging recess and the engaging surface are formed on the stopper body, a part of the valve operating member has to be projected from the vertical hole of the stopper body, and the entire gas stopper becomes large accordingly. . In this respect, when the engaging recess and the engaging surface are formed in the plug body as described in the above-mentioned two publications, almost the entire valve operating member can be housed in the vertical hole, whereby the gas can be stored. The stopper can be downsized.

[0007]

[Problems to be Solved by the Invention] Actual Kaihei 4-30370
In the gas plug described in the publication, the engaging recess is formed on the bottom surface of the vertical hole of the plug. In this case, if the plug body is cast, the engaging recess can be formed relatively easily. However, when the plug body is made of brass, it cannot be cast, and the engaging recess must be machined. This cutting is a very difficult work because the engaging recess is located deep inside the vertical hole. For this reason, there is a problem that it takes a lot of time to manufacture and the manufacturing cost rises.

The gas plug disclosed in Japanese Utility Model Publication No. 4-43650 has a ring member integrally connected to the end of the plug body, and an engaging recess is formed on the inner peripheral surface of the ring member. is there. In this case, the engaging recess can be cut relatively easily, but there is a certain limit in reducing the manufacturing time and the manufacturing cost in terms of metal cutting. In addition, there is a problem that the entire length of the plug is increased by the amount of connecting the ring members, resulting in an increase in the size of the gas plug.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. A stopper having a vertical hole is rotatably provided inside the stopper, and a support cylinder is provided at one end. The valve body is fixed in a state of being inserted into the vertical hole, and a valve body is provided inside the vertical hole for opening and closing the one end opening of the support cylinder by contacting and separating from one end surface of the support cylinder. Between the inner peripheral surface of the hole and the outer peripheral surface of the support cylinder, the valve body is moved from one end opening side to the other end side together with the valve body only when the plug body is located in the substantially open position. A valve operating member for opening the valve body is provided so as to be movable in the axial direction of the vertical hole and rotatable in the circumferential direction, and the outer peripheral portion of the valve operating member is provided on the inner peripheral portion of the vertical hole. Engagement in which the engaging convex portion formed on the engaging part engages so as to be movable in the axial direction of the vertical hole and immovable in the circumferential direction of the vertical hole. A portion that is formed, extends in the circumferential direction from the engaging concave portion, and engages the one end portion of the plug body such that the engaging convex portion is immovable in the axial direction of the vertical hole and movable in the circumferential direction. A gas plug having a mating surface is characterized in that a cylindrical body made of resin is fitted and fixed in the vertical hole, and the engaging concave portion and the engaging surface are formed in the cylindrical body. In this case, for the reason described below, it is desirable to form a through hole that constitutes the engaging recess with the inner peripheral surface of the vertical hole in the cylindrical body. Further, a slit extending in the circumferential direction from the engaging recess is formed at one end of the cylindrical body located on the opening side of the vertical hole, and a side surface of the slit located on the other end side of the plug is It is desirable to make it the engagement surface. Further, it is desirable to form a protrusion on the outer peripheral surface of the one end of the tubular body so as to position the tubular body with respect to the plug by abutting the one end surface of the plug.

[0010]

The engaging recess and the engaging surface can be formed at the same time when the cylindrical body is formed. Moreover, since it is only necessary to fit and fix the cylindrical body in the vertical hole of the plug body, the manufacturing time can be shortened and the manufacturing cost can be reduced. Also,
Since the cylindrical body is fitted in the vertical hole, the entire length of the plug does not become long, so that it is possible to prevent the gas plug from increasing in size.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 3, the gas plug 1 includes a plug body 2, a plug body 3, a support cylinder 4, a valve body 5,
The valve operating member 6 and the cylindrical body 7 are the main constituent elements.

As shown in FIG. 4, inside the plug body 2,
An inflow port 21, an outflow port 22 and a storage hole 23 are formed. The storage hole 23 extends downward from the upper end surface of the plug body 2, the inflow hole 21 is opened in the inner peripheral surface of the lower end portion, and the outflow port 22 is opened in the inner peripheral surface of the intermediate portion. The portion of the storage hole 23 where the outflow hole 22 opens is a tapered hole 23a. Storage hole 2 slightly below the taper hole 23a
An annular mounting surface 23b facing upward is formed on the inner peripheral surface of 3. The outlet 22 on the outer surface of the plug body 2
The plug of the quick coupling is screwed and fixed to the opening of the.

As shown in FIG. 5, the plug 3 has a main body 31 having a tapered shape corresponding to the tapered hole 23a. A vertical hole 32 having a circular cross section that extends upward from the lower end surface along the axis is formed inside the main body portion 31, and a horizontal hole 33 that extends from the inner peripheral surface of the intermediate portion of the vertical hole 32 to the outer peripheral surface thereof is formed. Has been done. The vertical hole 32 has a large diameter hole portion 32a on the upper end side and a small diameter hole portion 32b on the lower end side, and a step surface 32c is formed between the large diameter hole portion 32a and the small diameter hole portion 32b. ing.

The plug body 3 thus constructed is rotatably inserted into the tapered hole portion 23a, and as shown in FIGS. 1 to 3, the handle body 81 is rotatably operated via the intermediate member 82. It is supposed to be done. In this case, the rotation range of the plug 3 is restricted between the open position where the axis of the lateral hole 33 coincides with the axis of the outlet 22 and the closed position where the lateral hole 33 is separated from the outlet 22 by approximately 90 °. Has been done. Of course, in the open position, the inflow port 21 and the outflow port 22 communicate with each other through the vertical hole 32 and the horizontal hole 33, and in the closed position, the inflow port 21 and the outflow port 22 are blocked by the plug body 3.

As shown in FIG. 6, the support cylinder 4 has a cylindrical shape and has a small diameter portion 41 on the upper end side and a large diameter portion 42 on the lower end side. An annular protrusion 43 is formed at the upper end of the large diameter portion 42, and an annular groove 43a is formed on the outer peripheral surface of the annular protrusion 43. An O-ring 83 (see FIGS. 1 to 3) is attached to the annular protrusion 43a. The support cylinder 4 has the annular protrusion 8
3 is fitted on the inner peripheral surface of the storage hole 23 in a state of being mounted on the mounting surface 23b, and is sealed with the O-ring 83 between the inner peripheral surface of the storage hole 23 and the stopper. It is fixed to the main body 2. Therefore, the gas flowing from the inflow port 21 flows into the vertical hole 32 through the inside of the support cylinder 4.

A wire 84 (see FIGS. 1 to 3) is arranged at the lower end of the support cylinder 4 so as to traverse the inside thereof, and a ball valve (safety valve) 85 is mounted on the wire 84. Has been done. When the flow rate of the gas flowing inside the support cylinder 4 becomes excessive, the ball valve 85 is floated against its own weight due to the pressure of the gas, and is formed in the intermediate portion of the inner peripheral surface of the support cylinder 4. Sit on the valve seat 44. As a result, the inside of the support cylinder 4 is cut off.

In this embodiment, as the safety valve, the ball valve 85 which is seated by the pressure of gas against the own weight is used, but another known safety valve, for example, a valve biased to the upstream side by a spring. The body may be used. By doing so, it is possible to use the gas plug 1 upside down.

As shown in FIG. 7, the valve body 5 has a disk-shaped head portion 51. This head 51 is shown in FIGS.
As shown in FIG. 3, it is arranged in the vertical hole 32 above the support cylinder 4, and at the lower end thereof, as shown in FIG. 7D, an annular shape made of rubber or the like having a high sealing property is formed. The seal member 86 is attached and fixed. The seal member 86 abuts on the upper end surface of the support cylinder 4 which is the valve seat surface 45, thereby closing the upper end opening of the support cylinder 4 and moving upward from the valve seat surface 45 to move the support cylinder 4 upward. It is designed to open the top opening.

On the lower end surface of the head portion 51, a pair of leg portions 5
2, 52 are formed. Each leg portion 52 is formed on the inner peripheral surface of the upper end portion of the support cylinder 4 and extends in the vertical direction.
By being inserted between 6 and 46 so as to be movable in the vertical direction and immovable in the circumferential direction of the support cylinder 4, the valve body 5 is movable in the vertical direction in the support cylinder 4 and rotated in the circumferential direction. Impossiblely linked. Further, the lower ends of the legs 52, 52 are connected and reinforced by a connecting shaft 53, and a protruding portion 54 projecting downward is formed at the center of the connecting shaft 53. When the head 51 is seated on the valve seat surface 45, the protrusion 54 abuts on the ball valve 5 seated on the valve seat 44, whereby the ball valve 5 biting on the valve seat 44 is pushed down.

The valve operating member 6 is, as shown in FIG.
It has a cylindrical tubular portion 61 and a bottom portion 62 formed at the upper end of the tubular portion 61. The cylindrical portion 61 has a vertical hole 32.
Is inserted between the inner peripheral surface of and the outer peripheral surface of the small diameter portion 41 of the support cylinder 4 so as to be movable in the axial direction of the vertical hole 32 and rotatable in the peripheral direction. On the other hand, the bottom portion 62 is arranged above the head portion 51 of the valve body 5 so as to face the head portion 51, and a valve spring 87 is arranged in a compressed state between the bottom portion 62 and the head portion 51. There is. This valve spring 87 causes the head 5
1 is seated on the valve seat surface 45.

The upper end of the valve spring 87 is non-rotatably connected to the valve operating member 6 by being inserted between the pair of projections 63 formed on the bottom 62. The lower end has a pair of protrusions 5 formed on the head 51.
It is non-rotatably connected to the valve body 5 by being inserted between the No. 5 and the No. 55. Therefore, the valve operating member 6 is
When the valve operating member 6 is rotated with respect to, the valve spring 87 is twisted, and as a result, the valve operating member 6 is rotationally biased in the direction opposite to the rotational direction.

A window hole 64 is formed in the peripheral wall portion of the tubular portion 61 of the valve operating member 6 so as to penetrate the tubular wall portion 61. A locking protrusion 65 is formed on the upper portion of one side surface of the window hole 64. Further, a locking projection 56 formed on the outer peripheral surface of the head portion 51 of the valve body 5 is inserted into the window hole 64. Here, when the plug body 3 is located at the open position, the locking projection 56 of the valve body 5 is located above the locking projection 65. Moreover, the valve operating member 6 is constantly urged upward by the operating spring 88 arranged between the lower end surface of the valve operating member 6 and the annular protruding portion 43 of the support cylinder 4. Therefore, when the valve operating member 6 moves upward due to the biasing force of the operating spring 88, the valve body 5
Moves upward together with the valve operating member 6. by this,
When the plug body 3 is located at the open position, the valve body 5 opens.

A cam surface 66 is provided on the other side surface of the window hole 64.
Is formed in the window hole 64, and the small diameter portion 4 of the support cylinder 4 is formed in the window hole 64.
The projecting portion 47 formed on the outer peripheral surface of the upper end portion of No. 1 enters. Here, when the plug body 3 rotates from the open position to the closed position side, the valve operating member 6 rotates together with the plug body 3, and the valve operating member 6 moves from the open position side. When the cam surface 66 is turned to the closed position side, the protrusion 47 abuts on the cam surface 66. The cam action of the cam surface 66 and the protruding portion 47 allows the valve operating member 6 to move downward as the plug 3 closes.

As shown in FIG. 9, the cylindrical body 7 is formed by molding resin or the like into a cylindrical shape, and has an outer diameter substantially the same as the inner diameter of the small diameter hole portion 32b of the vertical hole 32. There is. At the upper end of the outer peripheral surface of the cylindrical body 7, a protrusion 71 forming a part of a circle is formed.
Is formed, and an annular protrusion 72 is formed at the lower end. Then, the cylindrical body 7 is inserted into the small diameter portion 32b of the vertical hole 32 and is fixed by means such as adhesion. In this case, the tubular body 7 is inserted until the annular protruding portion 72 abuts on the lower end surface of the plug body 3, and the protruding portion 71 is inserted into the lateral hole 33.
It is fitted to the inner surface of the lower side, and thereby the positioning in the axial direction and the circumferential direction with respect to the plug body 3 is performed. Moreover, since the annular protruding portion 72 and the protruding portion 71 sandwich the lower end surface of the plug body 3 and the inner peripheral surface of the lateral hole 33, thereby fixing the tubular body 7 to the plug body 3, the tubular body It is not always necessary to bond 7 to the plug body 3. However, it is desirable to bond them in order to enhance the fixing strength. Also,
In the case of adhering, the protruding portions 71 and 72 connect the cylindrical body 7 to the plug body 3.
Since it is temporarily fixed to the cylindrical body 7 until the adhesive solidifies.
Need not be fixed to the plug body 3 by using a fixing means, and the bonding work can be easily performed correspondingly.

When the tubular body 7 is inserted into the small-diameter portion 32b, the tubular body 7 is inserted by the amount of protrusion of the protruding portion 71 in the radial direction.
Need to be elastically deformed. Therefore, in this cylindrical body 7, a pair of slits 73, 73 are formed on both sides of the projecting portion 71 in the circumferential direction, and a pair of slits 74, 74 are formed at a position approximately 90 ° away from the projecting portion 71 in the circumferential direction.
Is formed so that the cylindrical body 7 can be easily elastically deformed. Of course, only one pair of slits 73, 73 (74, 74) may be formed, and the other slits 74, 74 (73, 73) may be formed as needed.

Through holes 75, 75 penetrating the cylindrical body 7 are formed in the peripheral wall of the cylindrical body 7 so as to be spaced apart by 180 ° in the circumferential direction. In the through hole 75, an engaging convex portion 67 formed on the outer peripheral surface of the lower end portion of the valve operating member 6 is movable in the vertical direction while the plug body 3 is rotated from the open position to the substantially closed position. And it is inserted immovably in the circumferential direction. Therefore, when the plug body is located in the above range, the valve operating member 6 moves to the plug body 3
Is movably connected in the vertical direction and is non-rotatably connected.

Further, each through hole 7 is provided at the lower end of the cylindrical body 7.
Slits (slit grooves) extending in the circumferential direction (direction from the closed position side to the open position side of the plug body 3) from the lower end portions of the 5,75.
76, 76 are formed. The upper side surface of the slit 76 is an engaging surface 76a, and the engaging surface 76 is provided with the valve operating member 6 after moving downward until the engaging convex portion 67 reaches the lower end portion of the through hole 75. , When rotating in the opening direction,
The engaging convex portion 67 abuts. In this state, the valve operating member 6 is rotatably connected to the stopper 3 so as not to move upward.

The protruding portion 72 of the cylindrical body 7 has a through hole 75.
The inner peripheral portion of the portion facing the slit 76 is cut off to form a thin portion 72b, and the inner diameter of the thin portion 72b is the same as the outer diameter of the tubular body 7. Then, the engaging protrusion 67 is inserted through the space between the thin portions 72b, 72b to form the through hole 7
5 can be inserted. Of course, when the engaging convex portion 67 moves out of the through hole 75 and moves in the circumferential direction, the engaging convex portion 67 moves on the inner peripheral side portion of the thin portion 72b.
Further, vertically extending grooves 68, 68 are formed on the inner peripheral surface of the valve operating member 6 corresponding to the engaging protrusions 67, 67, and the passing inner diameters of the grooves 68, 68 are two. The projections 47, 47 and the two locking projections 56 of the valve body 5,
The outer diameters of 56 are substantially the same. Also,
The groove 68 is formed with a minute protrusion 69 whose height increases from the lower end side toward the upper end side. Therefore, the protrusion 47 and the locking protrusion 56 pass over the minute protrusion 69 while elastically deforming the valve operating member 6, and thereby the groove portion 68.
Can be inserted into the window 64 from the
It is prevented by the minute projections 69 from exiting from the groove portion 68 through the groove portion 68.

In the gas plug 1 having the above structure, it is assumed that the plug 3 is located at the open position as shown in FIG.
At this time, the valve body 5 is opened by the valve operating member 6. In this state, when the plug body 3 is rotated to the closed position side, the engaging convex portion 67 of the valve operating member 6 has entered the through hole 75 of the cylindrical body 7, so that the valve operating member 6 is closed.
Rotate with. When the valve operating member 6 slightly rotates, the locking protrusion 65 of the valve operating member 6 separates from the engaging protrusion 56 of the valve body 5 in the circumferential direction. As a result, the valve body 5 is moved downward by the valve spring 87 and seated on the valve seat surface 45, blocking the upper end opening of the support cylinder 4 (see FIG. 2).

When the stopper 3 is further rotated to the closed position side,
The cam surface 66 of the valve operating member 6 abuts the protrusion 47 of the support cylinder 4. Therefore, the valve operating member 6 is moved downward against the biasing force of the operating spring 88. Further, at this time, the valve spring 87 is twisted by the rotation of the valve operating member 6,
The valve spring 87 biases the valve operating member 6 toward the open position. Then, when the plug body 3 is rotated to the closed position, the engaging convex portion 67 reaches the lower end portion of the through hole 75, and the upper surface thereof becomes substantially flush with the engaging surface 76 a of the slit 76. As a result, the engaging convex portion 67 becomes movable along the slit 76, and the valve operating member 6 is rotated to the initial position when opened by the rotational biasing force of the valve spring 87. This state is the closed state shown in FIG. 1, and the valve operating member 6 is movably and upwardly connected to the plug body 3 by the engagement of the engaging surface 76a and the engaging convex portion 67. Has been done.

On the other hand, when the plug body 3 located at the closed position is rotated to the open position side, the valve operating member 6 is stopped at a fixed position and only the plug body 3 is rotated. Then, when the plug body 3 reaches the open position, the engaging convex portion 67 enters into the through hole 75. As a result, the valve operating member 6 can be moved upward, and is moved upward by the operating spring 88 until it abuts against the upper surface of the through hole 75. At this time, the valve operating member 6
Since the locking projection 65 of 6 hits the locking projection 56 of the valve element 5, the valve element 5 moves upward together with the valve operating member 6. As a result, the valve body 5 is opened and the open state shown in FIG. 3 is obtained.

Here, in the above-mentioned gas plug 1, since the through hole 75 which functions as an engaging recess is formed in the cylindrical body 7 which is a separate body from the stopper 3, and the engaging surface 76a is formed. It is not necessary to form the engaging recess and the engaging surface in the plug body 3, and the tubular body 7 can be simply fitted and fixed in the vertical hole 32 of the plug body 3. Moreover, since the tubular body 7 is a resin molded product, it can be manufactured much easier and in a shorter time than metal working. Therefore, the labor and cost for manufacturing the gas plug 1 can be reduced.

Further, since the cylindrical body 7 is inserted into the vertical hole 32 of the plug body 3, the length of the plug body 3 does not become long.
Therefore, it is possible to prevent the gas plug 1 from increasing in size.

The present invention is not limited to the above embodiment, and the design can be changed as appropriate. For example, although the through hole 75 is formed in the above embodiment, a recess (engagement recess) extending vertically may be formed on the inner peripheral surface of the cylindrical body 7 instead. However, when the cylindrical body 7 is molded with resin, not only the forming of the through hole 75 is easier than the case of forming the recess, but also the die can be manufactured at a low cost. This point is the same for the slit 76. That is, instead of the slit 76, a groove (slit groove) extending in the circumferential direction may be formed on the inner peripheral surface of the cylindrical body 7, but it is preferable to form the slit 76.
Further, the lower end surface of the cylindrical body 7 may be used as the engagement surface without forming the slit 76.

[0035]

As described above, according to the first aspect of the invention, since the cylindrical body having the engaging concave portion and the engaging surface is fitted and fixed in the vertical hole of the plug, the gas can be prevented. The manufacturing cost of the stopper can be reduced. Moreover, since the length of the plug does not become long, it is possible to prevent the gas plug from increasing in size. According to the invention of claim 2, since the through hole is formed in the tubular body to form the engaging concave portion, the tubular body can be easily formed at low cost. Similarly,
According to the invention of claim 3, the tubular body can be easily formed at low cost. According to the invention of claim 4,
By abutting the projecting portion against the end surface of the plug body, the fitting depth of the cylindrical body with respect to the vertical hole of the plug body can be made constant.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention and showing a state in which a stopper is rotated to a closed position.

FIG. 2 is a partially omitted vertical sectional view showing a state in which the plug body of the embodiment is slightly rotated from the open position to the closed position side.

FIG. 3 is a partially omitted vertical cross-sectional view showing a state when the plug body of the embodiment is rotated to an open position.

FIG. 4 is a vertical cross-sectional view showing the plug body of the embodiment.

FIG. 5 is a view showing the stopper of the same embodiment, and FIG.
Is a front view thereof, and FIG. 5 (B) is a sectional view taken along line BB of FIG. 5 (A).

6 is a view showing a cylindrical body of the same embodiment, and FIG.
Is its plan view, FIG. 6 (B) is its side view, FIG. 6 (C),
6D is a sectional view taken along line CC of FIG. 6A, and FIG.
FIG. 6 (E) is an enlarged view of the arrow E of FIG. 6 (B).

FIG. 7 shows a valve body of the same embodiment, and FIG.
7 is a plan view thereof, FIG. 7B is a side view thereof, FIG. 7C is a front view thereof, FIG. 7D is a sectional view taken along line D-D of FIG.
(E) is a view on arrow E of FIG. 7 (C).

8 is a view showing the valve operating member of the embodiment, and FIG.
8A is its plan view, FIG. 8B is its front view, and FIG.
(C) and (D) are CC and DD of FIG. 8 (A), respectively.
A cross-sectional view and FIG. 8E are views taken in the direction of arrow E in FIG. 8B.

9 is a view showing a cylindrical body of the same embodiment, and FIG.
Is its plan view, FIG. 9 (B) is its side view, FIG. 9 (C) is its front view, and FIGS. 9 (D) and 9 (E) are respectively FIG. 9 (A).
9 is a cross-sectional view taken along the line D-D and E-E of FIG.
It is an arrow view.

FIG. 10 is an exploded perspective view showing a plug body, a support cylinder, a valve body, a valve operation member, a cylinder body, a valve spring and an operation spring of the embodiment.

[Explanation of symbols]

 1 Gas Plug 2 Plug Main Body 3 Plug Body 4 Support Cylinder 5 Valve Body 6 Valve Operating Member 7 Cylindrical Body 21 Inlet 22 Outlet 23 Insertion Hole 32 Vertical Hole 33 Horizontal Hole 47 Protrusion 56 Locking Protrusion 65 Locking Protrusion 66 Cam Surface 75 Through Hole 76 Slit 76a Engaging Surface 87 Valve Spring 88 Operation Spring

Claims (4)

[Claims] 1. A stopper body having a vertical hole is rotatably provided inside the stopper body, and a support cylinder is fixed with one end inserted in the vertical hole. A valve body is provided which opens and closes the one end opening of the support cylinder by contacting and separating from the one end surface of the support cylinder, and the plug body is provided between the inner peripheral surface of the vertical hole and the outer peripheral surface of the support cylinder. The valve operating member is moved in the axial direction of the vertical hole from the one end opening side of the vertical hole to the other end side together with the valve element to open the valve body only when is located at the substantially open position. Movably and rotatably provided in the circumferential direction, an engaging convex portion formed on the inner peripheral portion of the vertical hole on the outer peripheral portion of the valve operating member is movable in the axial direction of the vertical hole, and An engagement recess is formed that is engaged with the vertical hole so as to be immovable in the circumferential direction, and extends from the engagement recess in the circumferential direction at one end of the plug body. In a gas plug in which the engagement convex portion is formed so as to be immovable in the axial direction of the vertical hole and movably in the circumferential direction, a tubular body formed by molding resin in the vertical hole is formed. A gas stopper, which is fitted and fixed, and in which the engagement recess and the engagement surface are formed in the cylinder. 2. The gas plug according to claim 1, wherein the cylindrical body is formed with a through hole that forms the engagement recess with the inner peripheral surface of the vertical hole. 3. A slit extending in the circumferential direction from the engaging recess is formed at one end of the cylindrical body located on the opening side of the vertical hole, and the slit located on the other end side of the cylindrical body is formed. The gas plug according to claim 1 or 2, wherein a side surface is the engagement surface. 4. A protrusion is formed on an outer peripheral surface of one end portion of the tubular body to position the tubular body with respect to the stopper body by abutting the one end surface of the stopper body. The gas stopper according to any one of 1 to 3.