JPH0719671U - Gas cock - Google Patents

Abstract

(57) [Summary] [Structure] A pair of protrusions 64, 6 are provided on the inner peripheral surface of the cylindrical body 4.
Two pairs of 4 are formed. A fitting groove 67 is formed between each pair of protrusions 64. The valve body 6 is formed with legs 62, 62. By inserting the leg portions 62, 62 into the fitting grooves 67, 67, respectively, the valve body 6 cannot be rotated relative to the cylindrical body 4,
Also, it is engaged so as to be movable in the vertical direction. A protrusion 46 is formed on the outer peripheral surface of the cylindrical body 4. This protrusion 46 is used as an operating member 77.
Into the window hole 72 and contact the cam surface 72e. [Effect] The valve body 6 and the operating member 7 can be easily assembled to the cylindrical body 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas cock that incorporates a gas leak prevention valve that opens only when the valve is almost fully opened.

[0002]

[Prior art]

 In general, a gas cock has a cock body having an inflow port and an outflow port, a rotatably provided inside the cock body, and a vertical hole extending from one end face on the inflow port side along the axis and an outer circumference from the vertical hole. When the plug is rotated to the fully open position, the inflow port and the outflow port communicate with each other through the vertical hole and the horizontal hole, and the closed position is provided. When rotated, the inflow port and the inflow port are blocked by the plug.

By the way, when the gas pipe comes off from the gas cock due to an unexpected accident, a large amount of gas leaks from the gas cock, which may cause a serious accident such as a fire. Therefore, the conventional gas cock is provided with an overflow prevention valve that closes when the flow rate of the gas flowing in the gas cock becomes excessive. However, the overflow prevention valve does not operate unless the gas flow rate becomes excessive. Therefore, if the gas pipe comes off while the gas cock is used in the half-opened state, the gas will continue to flow out.

Therefore, in recent gas cocks, a gas leakage prevention valve is also provided. An example of a gas cock provided with such a gas leakage prevention valve is described in Japanese Utility Model Laid-Open No. 63-18683. The gas leak prevention valve of this gas cock is provided inside the cock body with the tip part inserted into the vertical hole of the plug body, and has a cylindrical body that connects the inlet and the vertical hole, and the tip opening of this cylindrical body. It is equipped with a valve body that opens and closes the valve, and an operating member that opens the valve body only when the plug body is in the fully open position. The tip opening is closed. Therefore, even if an accident such as disconnection of the gas pipe occurs when the stopper is in the half-open position, it is possible to prevent the gas from leaking.

[0005]

[Problems to be solved by the device]

 However, the gas cock described in the above publication has a problem that the valve body and the operating member are difficult to assemble with the cylindrical body. That is, in the above-described gas cock, the cylinder is provided with a pin passing therethrough, while the valve body is formed with an elongated hole extending in the axial direction, and the pin is inserted into the elongated hole, whereby the valve body is inserted into the cylinder. It is mounted so that it can move in the axial direction and cannot rotate. Also, the end of the pin is inserted into the window hole of the operating member so that the operating member moves in the axial direction when the stopper is rotated to the closed position side, and the pin contacts the cam surface.

However, with such a structure, when assembling the valve body and the operating member to the tubular body, the elongated hole of the valve body and the window hole of the operating member are aligned so that the pin can be inserted, The pin must be inserted while maintaining that state. For this reason, there was a problem that it took a lot of time to assemble. Moreover, the pin is constructed by screwing and fixing two halves having heads to each other in order to prevent the halves from being pulled out from the cylindrical body. Since they had to be inserted into the respective cylinders and then screwed together, the work was extremely difficult and time-consuming.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, this invention has a cock body having an inflow port and an outflow port, a vertical hole extending from one end surface along the axis, and a horizontal hole extending from the vertical hole to the outer peripheral surface. , A stopper provided inside the cock body so as to be rotatable between a fully open position and a closed position, and fixed inside the cock body with a tip portion inserted into the vertical hole, A cylindrical body that communicates the inflow port with the vertical hole through the inside, and is provided in the vertical hole so as to be movable in the axial direction thereof, and blocks the front end opening of the cylindrical body by hitting the front end surface of the cylindrical body. The valve body is rotatably provided inside the vertical hole of the plug body and is movable in the axial direction of the plug body, and the valve body is inserted into the cylinder only when the plug body is located at the substantially fully opened position. A gas leak prevention valve having an operating member separated from the tip surface of the body, A first engagement mechanism that non-rotatably and movably engages the valve body with the cylindrical body is provided between the body and the valve body, and between the plug body and the operating member. A second engagement mechanism for turning the operating member in accordance with the turning of the stopper is provided so as to be disengageable, and is provided in a window hole of the operating member between the operating member and the cylindrical body. And a contact portion provided on the cylindrical body so as to come into contact with the cam surface, and when the plug body is rotated from the fully open position side to the substantially closed position, (2) In a gas cock provided with a cam mechanism for moving the operation member toward one end face side of the stopper so that the engagement of the engagement mechanism is released, the first engagement mechanism is replaced by the cylinder body and the valve. It is composed of a fitting part that is provided integrally with the body, and a projection is integrally formed on the outer peripheral surface of the cylindrical body as the contact part of the cam mechanism. It is an form features.

[0008]

[Action]

 By fitting the fitting portions provided integrally with the tubular body and the valve body to each other, the valve body can be rotatably and movably engaged with the tubular body. Further, by inserting the protrusion integrally formed on the outer peripheral surface of the cylindrical portion into the window hole of the operation member, the protrusion can be brought into contact with the cam surface.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. First, a brief description will be given of a schematic configuration of the entire gas cock. As shown in FIGS. 1 to 3, a plug body 3 is rotatably arranged inside the cock body 1. The plug 3 can be rotated by approximately 90 ° from the open position shown in FIG. 1 to the closed position shown in FIG. 3 by the handle 101 (see FIG. 4). In the open state, the valve body 6 of the gas leakage prevention valve 10 is separated upward from the cylinder body 4 together with the operating member 7 by the first spring 8 to open the upper end opening of the cylinder body 4. Therefore, the gas flowing from the inflow port 12 passes through the inside of the cylindrical body 4 and flows out from the outflow port 13. In this open state, when the flow rate of the gas becomes excessive, the ball valve 5 is floated by the gas and seats on the valve seat 44. As a result, the overflow state is instantly resolved.

When the plug body 3 is slightly rotated in the direction of the arrow from the open position toward the closed position, the valve body 6 is moved downward by the urging force of the second spring 9, as shown in FIG. It abuts the cylindrical body 4 and shields its upper end opening. This blocks the flow of gas. Therefore, the gas does not continue to leak when half-opened.

Next, a specific configuration of each part of the gas cock will be described in detail with reference to FIGS. 1 to 3 and other drawings. As shown in FIG. 5, the cock body 1 has an inverted Z-shape, and a taper hole-shaped plug accommodating hole 11 extending downward from the upper end surface is formed therein. An inflow port 12 is opened on the bottom surface of the plug storage hole 11. A gas pipe (not shown) connected to the main plug is connected to an opening outside the inflow port 12. Further, an outflow hole 13 is opened on the inner peripheral surface of the intermediate portion of the plug housing hole 11. As shown in FIG. 4, a hose end 100 is rotatably provided at an opening outside the outflow port 13. A gas pipe (not shown) connected to a gas appliance is connected to the hose end 100.

Further, a key groove 14 extending vertically along the inner peripheral surface is formed on the inner peripheral surface of the plug housing hole 11, and an annular recess 15 is formed on the bottom surface of the plug housing hole 11. Has been done. On the inner peripheral surface of the recess 15, two flat portions 16 are formed at 180 ° apart in the circumferential direction.

A rubber packing 2 is inserted into the plug housing hole 11. As shown in FIG. 6, the rubber packing 2 has a tubular shape and is formed in a taper shape corresponding to the plug housing hole 11. The rubber packing 2 is inserted into the plug housing hole 11 with the key portion 21 formed on the outer peripheral surface thereof fitted in the key groove 14. In this case, when the rubber packing 2 is inserted until it hits the bottom surface of the plug housing hole 11, the rubber packing 2 presses and contacts the inner peripheral surface of the plug housing hole 11 due to its own elasticity, whereby the inner circumference of the plug housing hole 11 is increased. Airtightness is secured between the surface and the outer peripheral surface of the rubber packing 2. Further, in the rubber packing 2, a through hole 22 is formed in a portion facing the outlet 13 in a state of being inserted into the plug housing hole 11, and a protruding portion 23 is formed in an annular shape on the inner peripheral surface of the lower end portion. There is.

A stopper 3 is rotatably and airtightly fitted on the inner peripheral surface of the rubber packing 2. As shown in FIG. 7, the plug 3 is provided with a tapered main body portion 31 corresponding to the inner peripheral surface of the rubber packing 2. Inside the main body portion 31, the inflow port 12 is exposed. A vertical hole 32 extending upward from the lower end surface is formed, and a horizontal hole 33 extending laterally from the vertical hole 32 and opening to the outer peripheral surface is formed. An engagement recess 32a is formed on the upper bottom surface of the vertical hole 32. The lateral hole 33 is located at the same position in the vertical direction as the through hole 22 when the plug body 3 is inserted until it hits the protruding portion 23 of the rubber packing 2. Therefore, the lateral hole 33 is switched between a communication state in which the lateral hole 33 faces the outflow port 13 via the through hole 22 and a blocking state in which the lateral hole 33 is separated from the through hole 22 depending on the rotating position of the plug body 3.

The handle 3 is rotated by 90 ° from the position where the facing area between the lateral hole 33 and the through hole 22 is maximized (hereinafter, referred to as an open position) by the handle 101. The lateral hole 33 and the through hole 22 are rotatable between a position where they are in a closed state (hereinafter, referred to as a closed position).

The cylinder 4 of the gas leakage prevention valve 10 is inserted and fixed to the bottom of the plug housing hole 11. The tubular body 4 is made of a resin having appropriate rigidity and flexibility such as polyacetal and has a large diameter portion 41 on the lower end side and a small diameter portion 42 on the upper end side as shown in FIG. ing. An annular protrusion 43 is formed between the large diameter portion 41 and the small diameter portion 42. On the outer peripheral surface of the annular protruding portion 43, flattened surfaces 43a are formed 180 ° apart in the circumferential direction.

Then, in the cylindrical body 4, the annular protruding portion 43 is fitted into the concave portion 15 with the flattened surface 43 a thereof facing the flat surface portion 16 of the cock body 1, whereby the cylindrical protruding portion 43 is rotated into the plug housing hole 11. It is immovably inserted. Moreover, the annular protruding portion 43 has a depth equal to or slightly thicker than the depth of the recess 15. Therefore, when the plug body 3 is inserted into the upper surface of the annular protruding portion 43 until it hits the protruding portion 23 of the rubber packing 2, the lower end surface of the rubber packing 2 comes into contact with the upper surface of the annular packing portion 43. It is fixed airtightly. As a result, the gas flowing in from the inflow port 12 flows through the inner part of the cylindrical body 4 toward the outflow port 13 side.

An overflow prevention valve is provided inside the large diameter portion 41 of the cylindrical body 4. That is, the ball valve 5 is provided inside the large diameter portion 41 so as to be vertically movable. The ball valve 5 is normally supported by a pin 102 provided on the cylindrical body 4. Further, a valve seat 44 facing downward is formed at an intermediate portion of the inner peripheral surface of the cylindrical body 4. Then, when the flow rate of the gas flowing in the cylindrical body 4 becomes the overflow state, the ball valve 5 is floated by the gas and seated on the valve seat 44, whereby the overflow state is instantly canceled. ing.

Further, a pair of protrusions 45, 45 extending in the vertical direction are formed on the inner peripheral surface of the upper end portion of the cylindrical body 4 so as to be spaced apart by 180 ° in two pairs of circumferential directions. A fitting groove (fitting portion) 47 is formed by and the inner peripheral surface of the cylindrical body 4. Further, on the outer peripheral surface of the upper end portion of the small diameter portion 42, two protrusions 46 are formed so as to be circumferentially separated from each other by 180 ° and are also spaced apart from the fitting groove 47 by approximately 45 ° in the circumferential direction. The lower end of the protrusion 46 has a semi-circular shape, and the upper end thereof gradually narrows in width and gradually lowers in height, so that the height of the upper end surface of the tubular body 4 becomes zero. .

The valve body 6 is connected to the inner peripheral surface of the small diameter portion 42 of the tubular body 4 so as to be vertically movable and non-rotatable. The valve body 6 is made of a resin such as polyacetal, and has a disc-shaped valve portion 61 at its center, as shown in FIG. The valve portion 61 shields the upper end opening of the tubular body 4 by contacting the upper end surface of the tubular body 4, and has a pair of leg portions (fitting portions) 62, 62 extending downward on the lower surface thereof. Has been formed. A connecting portion 63 is formed at the lower end of each of the legs 62, 62 to connect and reinforce them. A projecting portion 64 extending downward from the central portion of the connecting portion 63 is formed.

On the other hand, on the upper surface of the valve portion 61, two projections 65, 65 facing each other with the center therebetween are formed, and a cylindrical portion 66 surrounding the two projections 65 is formed. Two engaging projections 67, 67 are formed on the intermediate portion of the outer peripheral surface of the tubular portion 66 so as to be circumferentially separated from each other by 180 ° and are also circumferentially separated from the leg portion 62 by approximately 45 °. ing. The diameter of the two engagement projections 67, 67 is the same as the outer diameter of the valve portion 61, as is clear from FIG. 9C.

In the valve body 6 having the above-described structure, the leg portions 62, 62 are slidably inserted in the fitting grooves 47, 47 of the tubular body 4, respectively, so that the tubular body 4 is vertically movable. And they are linked so that they cannot move.

The operating member 7 is fitted on the outer peripheral surface of the small diameter portion 42 of the tubular body 4 so as to be movable in a predetermined range in the vertical direction and rotatable in a predetermined range in the circumferential direction. The operating member 7 is made of a resin such as polyacetal and has a tubular portion 71 as shown in FIG. The tubular portion 71 has an inner diameter slightly larger than the outer diameter of the small diameter portion 42 so as to be slidably and rotatably fitted on the outer peripheral surface of the small diameter portion 42 of the tubular body 4. Two window holes 72, 72 are formed in the peripheral wall portion of the cylindrical portion 71 so as to be circumferentially separated from each other by 180 °. The window hole 72 has a substantially rectangular shape, and includes a lower side 72a, an upper side 72b, a right side 72c that faces the closing rotation direction of the plug body 3 (hereinafter, referred to as a closing direction), and an opening rotation direction of the plug body 3. The left side 72d facing (hereinafter referred to as the opening direction) is provided. A cam surface 72e is formed between the lower side 72a and the right side 72c and extends upward from the left side 72d side toward the right side 72c side.

When the tubular portion 71 is fitted to the outer peripheral surface of the small diameter portion 42 of the tubular body 4, the projection 46 of the tubular body 4 is inserted into the window hole 72. In this case, as shown in FIGS. 1 to 3 and 11, the first ridge 8 is mounted between the lower end surface of the tubular portion 71 and the annular protruding portion 43 of the tubular body 4. The operation member 7 is biased upward by the 1 spring 8. Therefore, normally, the projection 46 is brought into contact with the lower side 72a of the window hole 72 by the biasing force of the first spring 8 (see FIG. 12A). When the operation member 7 is rotated in the closing direction (the direction opposite to the arrow in FIG. 12) from the state where the projection 46 is in contact with the lower side 72a, the projection 46 is brought into contact with the cam surface 72e as shown in FIG. 12C. Abut. As a result, the operating member 7 moves downward against the biasing force of the first spring 8. As is apparent from this point, the projection 46 and the cam surface 72e constitute a cam mechanism.

It should be noted that the cylindrical portion 71 may be inserted into the outer circumference of the small-diameter portion 42 in order to allow the protrusion 46 to enter the window hole 72. When the tubular portion 71 is inserted into the outer periphery of the small diameter portion 42, the tubular portion 71 is elastically deformed so that the inner peripheral surface of the tubular portion 71 rides over the protrusion 46, and the protrusion 46 is inserted into the window hole 72. In this case, in order to make it easier for the inner peripheral surface of the cylindrical portion 71 to get over the protrusion 46, an inclined surface 73 is formed in the inner peripheral surface of the cylindrical portion 71 between the window hole 72 and the lower end surface. There is. For the same reason, of course, the height of the upper half of the protrusion 46 is gradually lowered as it goes upward.

Further, a sub-window hole 74 is formed between the two window holes 72, 72, and the gas flowing out from the upper end opening of the tubular body 4 at the time of opening the valve is the window hole 72 and the sub-window hole 74. It is designed to reach the outlet 13 through.

Further, an upper wall portion 75 that shields the opening is formed at the upper end of the tubular portion 71. A through hole 76 is formed in the center of the upper wall 75. The through hole 76 is formed to have a slightly larger diameter than the tubular portion 66 of the valve body 6, and the tubular portion 66 is inserted into the through hole 76. Further, on the inner peripheral surface of the through hole 76, two fan-shaped notches 77, 77 are formed at 180 ° apart in the circumferential direction. The inner diameter of the two cutouts 77, 77 is slightly larger than the outer diameter of the two engagement projections 67, 67 of the valve body 6. Therefore, when the operating member 7 moves downward due to the action of the cam mechanism, the engaging projections 67, 67 move relatively upward through the notches 77, 77 and are positioned above the upper wall portion 75. (See FIG. 13C).

In the state where the engaging protrusions 67, 67 are located above the upper wall portion 75, the operation member 7 is opened in the opening direction (arrow in FIG. 13) until the engaging protrusion 67 comes into contact with an engaging portion 78 described later. When rotated in the (marking direction), a portion 75a of the upper wall portion 75 located between the notch 77 and the leg portion 78a faces the engaging protrusion 67 (see FIG. 13D). When the operating member 7 is moved upward in this state, the portion 75a abuts and engages with the engaging projection 67, so that the valve body 6 moves upward together with the operating member 7.

An engaging portion 78 is formed on the upper surface of the upper wall portion 75 at a portion between the two notches 77, 77. The engaging portion 78 is composed of two leg portions 78a, 78a extending upward from the upper surface of the upper wall portion 75, and a connecting portion 78b connecting the upper ends of the two leg portions 78a, 78a. The leg portions 78a, 78a are arranged between the two notches 77, 77. Moreover, the leg portions 78a, 78a are arcs whose opposing surfaces have the same center and diameter as the through hole 76, so that the tubular portion 66 of the valve body 6 penetrating the through hole 76 can enter between them. It is regarded as a face.

The engaging portion 78 is engageable with the engaging concave portion 32a of the plug body 3 so as to be insertable and removable and non-rotatable. The engaging portion 78 and the engaging concave portion 32a are In the engaged state, the operating member 7 rotates integrally with the plug body 3. On the other hand, the engagement depth (depth in the up-down direction) between the engagement portion 78 and the engagement recess 32a is equal to that of the projection 46 when the plug body 3 is rotated from the open position to the closed position or immediately before. The movement amount by which the operation member 7 is moved downward by the cam operation with the cam surface 72e is the same. Therefore, when the plug body 3 is located at the closed position, the engagement between the engagement portion 78 and the engagement recess 32a is released, and the operation member 7 becomes rotatable with respect to the plug body 3. As is apparent from this, the engagement concave portion 32a and the engagement portion 78 constitute a second engagement mechanism. When the operating member 78 rotates with respect to the plug body 3, the connecting portion 78b rotates with the urging force of the first spring 8 in contact with the bottom surface of the vertical hole 32.

A second spring 9 is mounted between the valve body 6 and the operating member 7. The lower end portion of the second spring 9 is inserted into the tubular portion 66 of the valve body 6 and abuts against the upper surface of the valve portion 61, and the end portion of the wire rod has two protrusions 65, 65. It is non-rotatably connected to the valve body 6 by being inserted between them. On the other hand, the upper end portion of the second spring 9 extends along the inner peripheral surfaces of the two leg portions 78a, 78a and is brought into contact with the lower surface of the connecting portion 78b. Moreover, the upper end portion of the wire of the second spring 9 is inserted between the two projections 79, 79 formed on the lower surface of the connecting portion 78b, and thereby is non-rotatably connected to the operating member 7. . The second spring 9 connected to the valve element 6 and the operating member 7 in this manner is mounted between the two in a compressed and twisted state. As a result, the second spring 9 biases the valve body 6 downward, biases the operating member 7 upward, and further biases the operating member 7 in the opening direction. The second spring 9 urges the valve body 6 in the closing direction, but since the valve body 6 is engaged with the cylindrical body 4 in a non-rotatable manner, it is rotated by the second spring 9. Not really.

Next, the operation of the gas cock having the above structure will be described. In the open state shown in FIG. 1, the plug 3 is positioned at the open position so that the lateral hole 33 of the plug 3 communicates with the outflow port 13 through the through hole 22 of the rubber packing 2. At this time, the operating member 7 has its engaging portion 78 engaged with the engaging concave portion 32a of the plug body 3, and as shown in FIG. 12 (A), the first spring 8 causes the lower side 72a of the window hole 72 to move. Is moved upward until it comes into contact with the protrusion 46 of the tubular body 4, and is further urged in the opening direction (the arrow direction in FIG. 13) by the second spring 9 as shown in FIG. 13 (A). The leg portion 78 a of 78 is brought into contact with the engagement protrusion 67 of the valve body 6. Moreover, in this state, the valve body 6 is moved upward together with the operating member 7 by the engagement of the portion 75a of the upper wall portion 75 of the operating member 7 with the engaging projection 67. The valve portion 61 is separated upward from the tubular body 4 to open the upper end opening of the tubular body 4.

In the open state, the gas flowing in from the inflow port 12 passes through the inside of the cylindrical body 4, passes through the window hole 72 and the sub window hole 74 of the operation member 7, and is a vertical hole of the plug body 3. It flows into 32, and from there, it reaches the outflow port 13 through the lateral hole 33 and the through hole 22. At this time, when the flow rate of the gas becomes excessive, the ball valve 5 is floated from the support pin 102 by the gas and is seated on the valve seat 44. Therefore, the overflow condition is instantly resolved.

When the plug 3 is slightly rotated in the closing direction (the direction opposite to the arrow in FIGS. 12 and 13) from the open state, that is, the engagement length of the engagement protrusion 67 and the portion 65a in the circumferential direction is changed. When the plug body 3 is rotated in the closing direction by an amount, the operation member 7 is rotated in the same direction as the plug body 3 by the same amount by the engagement between the engagement portion 78 and the engagement recess 32a. Then, as shown in FIG. 13B, the engagement between the engagement protrusion 67 and the portion 65a is released. When the engagement between the engagement protrusion 67 and the portion 65a is released, the valve body 6 is moved downward by the second spring 9, and the valve portion 61 is moved to the upper end surface of the cylindrical body 4 as shown in FIG. And the upper end opening of the cylindrical body 4 is shielded. Therefore, even though the plug body 3 is located at the half open position, the flow of gas from the inflow port 12 to the outflow port 13 is blocked.

If the ball valve 5 is seated on the valve seat 44 in the state where the valve body 6 is in contact with the cylindrical body 4, the lower end of the protruding portion 64 will reach the ball valve 5 from above. At the end, the ball valve 5 is pushed down. As a result, the ball valve 5 is reset.

When the plug body 3 is further rotated in the closing direction, as shown in FIG. 12C, the cam surface 72e of the operation member 7 comes into contact with the projection 46, and as a result, the operation member 7 moves toward the first spring 8. It is moved downward against the biasing force. As a result of the operation member 7 being moved downward, the engagement depth between the engagement portion 78 and the engagement recess 32a becomes shallow, and the projection 67 of the valve body 6 passes through the notch 77 and moves relatively upward. Moving.

Then, when the plug body 3 is rotated by approximately 90 ° to the closed position, the operating member 7 moves further downward, and as a result, the engagement projection 67 of the valve body 6 passes through the notch 77 and the upper wall portion. It moves relatively upward until it is located slightly above 75. Moreover, at this time, the engagement portion 78 is released from the engagement recess 32a, and the engagement between the both is released. Then, the urging force of the second spring 9 causes the operating member 7 to rotate in the opening direction until the leg portion 78 a of the engaging portion 78 abuts on the engaging protrusion 67 of the valve body 6. As a result, as shown in FIG. 13D, the phase between the engaging portion 78 and the engaging recess 32a is shifted by 90 °.

At this time, since the upper surface of the engaging portion 78 is brought into contact with the bottom surface of the vertical hole 32 by the urging force of the second spring 9, the vertical position of the operating member 7 is constant before and after the rotation. Is. Therefore, after the operation member 7 is rotated, the portion 75a of the upper wall portion 75 is located below and faces the engagement protrusion 67 of the valve body 6. In this case, since the portion 75a and the engaging projection 67 are vertically separated from each other, the valve body 6 is not affected by the rotation of the operating member 7 and the upper end opening of the tubular body 4 is shielded. Continue to maintain the condition. When the plug body 3 is rotated to the closed position, the inlet 12 and the outlet 13 are of course blocked by the plug body 3 as shown in FIG.

Next, in order to open the closed gas cock, the stopper 3 is rotated from the closed position to the open position. At this time, since the engaging portion 78 is out of the engaging recess 32a, the operating member 7 does not rotate with the rotation of the plug 3. Therefore, when the plug body 3 is rotated approximately 90 ° from the closed position to the open position, the phase of the engaging recess 32a matches the phase of the engaging portion 78. Therefore, the engaging portion 78 can be fitted into the engaging recess 32a, and the operating member 7 is moved upward by the biasing force of the first spring 8 and the second spring 9. When the operating member 7 moves a little upward, the portion 75a of the upper wall portion 75 abuts on the engaging protrusion 67 of the valve body 6, and the two are integrated by the second spring 9. Therefore, thereafter, the valve body 6 and the operating member 7 are moved integrally by the urging force of the first spring 8. Then, the lower side 72a of the window hole 72 abuts on the projection 46, and the two stop. In the stopped state, the engaging portion 78 is fitted into the engaging recess 32a, and the valve body 6 is separated upward from the cylindrical body 4 to open the upper end opening thereof. Of course, the lateral hole 33 of the plug body 3 communicates with the outflow hole 13 through the through hole 22 of the rubber packing 2. That is, it returns to the open state shown in FIG.

Here, in the above-described gas cock, by fitting the leg portion 62 of the valve body 6 into the fitting groove 47 of the cylinder body 4, the valve body 6 cannot be rotated relative to the cylinder body 4, and Since it is movably engaged and the projection 46 formed on the outer peripheral surface of the tubular body 4 is inserted into the window hole 72 of the operation member 7 and brought into contact with the cam surface 72e, the conventional gas cock can be used. No extra pins are needed. Therefore, the valve body 6 and the operating member 7 can be easily assembled to the cylindrical body 4.

Particularly in this embodiment, the cylinder body 4 and the valve body 6 can be engaged by only inserting the leg portion 62 into the fitting groove 47 from the upper end thereof. Moreover, in order to allow the projection 46 to enter the window hole 72, it is sufficient that the projection 46 goes over the inclined surface 7 and the operation member 7 is inserted into the tubular body 4 from its upper end portion. You can easily get into 72. Therefore, the valve body 6 and the operating member 7 mounted on the tubular body 4 can be more easily assembled.

Further, for example, when the cylinder body 4, the valve body 6 and the operating member 7 are assembled so as to be in an open state, the cylinder body 4 and the operating member 7 are connected to the window hole 72 by the urging force of the first spring 8. The lower side 72a is brought into contact with the projection 46 to be integrated, and the valve body 6 and the operating member 7 are brought into contact with the engagement projection 67 at the portion 75a of the upper wall portion 75 by the urging force of the second spring 9. Be integrated by As a result, the cylinder body 4, the valve body 6 and the operating member 7 are integrated. In this way, since the cylinder body 4, the ball valve 5, the valve body 6, the operating member 7, the first spring 8 and the second spring 9 can be handled integrally, they can be easily assembled to the cock body 1. be able to.

When the valve body 6 and the operating member 7 are integrated, the valve body 6 may be assembled in a state of being in contact with the upper end surface of the tubular body 4 without being assembled in an open state. In this case, the valve body 6 and the operating member 7 are integrated via the tubular body 4. Of course, the tubular body 4 and the operating member 7 are integrated in the same manner as described above.

[0044]

[Effect of device]

 As described above, according to the gas cock of the present invention, it is possible to easily assemble the valve body and the operating member with respect to the cylindrical body.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main portion of an embodiment of the present invention when opened.

FIG. 2 is a vertical cross-sectional view of a main part of the embodiment when it is half open.

FIG. 3 is a vertical cross-sectional view of a main part when the same embodiment is closed.

FIG. 4 is a side view showing the whole of the embodiment.

5 is a view showing the cock body of the same embodiment, and FIG.
5A is a vertical sectional view thereof, and FIG. 5B is an enlarged view of the arrow B in FIG. 5A.

FIG. 6 shows the rubber packing of the same embodiment.
(A) is the front view, FIG.6 (B) is BB of FIG.6 (A).
A cross-sectional view and FIG. 6C are views taken in the direction of the arrow in FIG.

7A and 7B are views showing the plug body of the embodiment, FIG. 7A is a front view thereof, and FIGS. 7B and 7C are views of arrow B and arrow C of FIG. 7A, respectively. , FIG. 7D and FIG.
It is a DD and EE sectional drawing of (B).

8A and 8B are views showing a cylindrical body of the same embodiment, FIG. 8A is a front view thereof, FIG. 8B is a view seen from an arrow B of FIG. 8A, and FIG.
(C) and (D) are CC and DD of FIG. 8B, respectively.
8B is a cross-sectional view, FIG. 8E is an enlarged view of FIG.
FIG. 8F is a side view of FIG.

9A and 9B show a valve body of the embodiment, FIG. 9A is a front view thereof, FIG. 9B is a side view thereof, FIG.
9D is a view as viewed in the direction of arrow C in FIG.
9E is a cross-sectional view taken along the line EE of FIG.

FIG. 10 is a view showing the operating member of the embodiment, and FIG.
1A is a front view thereof, FIG. 10B is a side view thereof, and FIG.
0 (C) is a sectional view taken along line CC of FIG.
(D) and (E) are respectively the arrow D view and the arrow E view of FIG. 10 (A).

FIG. 11 is an exploded perspective view showing a gas leakage prevention valve of the same embodiment.

12 is a view showing the relationship between the window hole and the protrusion of the embodiment, and FIG. 12 (A) shows the relationship when opened.
FIG. 12B shows the relationship in the state where the plug is slightly rotated from the open position to the closed position, FIG. 12C shows the relationship in the state immediately before closing, and FIG. 12D shows the relationship when closed. Is shown.

FIG. 13 shows the relationship between the engagement protrusion of the valve body and the upper wall portion and notch of the operating member in the embodiment, FIG. 13 (A) shows the relationship at the time of opening, and FIG. Shows the relationship in the state in which the plug is slightly rotated from the open position to the closed position, and FIG. 13 (C) shows the relationship in the state immediately before closing,
FIG. 13D shows the relationship at the time of closing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cock body, 3 Plug body 4 Cylindrical body 6 Valve body 7 Operating member 10 Gas leak prevention valve 11 Plug insertion hole 12 Inlet port 13 Outlet port 32 Vertical hole 32a Engagement recess 33 Side hole 46 Protrusion 47 Fitting groove (fitting) Part) 62 leg part (fitting part) 72 window hole 72e cam surface 78 engaging part

Claims (1)

[Scope of utility model registration request] 1. A cock body having an inflow port and an outflow port, a vertical hole extending from one end face along an axis and a horizontal hole extending from the vertical hole to an outer peripheral surface, and a fully open position inside the cock body. And a stopper provided so as to be rotatable between a closed position and a closed position, and the inside of the cock body is fixed in a state in which a tip portion is inserted into the vertical hole, and through the inside, the inflow port and the vertical hole And a valve body that is provided movably in the axial direction in the vertical hole and that blocks the front end opening portion of the cylinder body by abutting against the front end surface of the cylinder body, and the vertical body of the plug body. An operating member which is rotatably provided inside the hole and movable in the axial direction of the plug body, and which separates the valve body from the tip end surface of the cylindrical body only when the plug body is located at the substantially fully opened position; A valve body is provided between the cylinder body and the valve body such that the valve body cannot rotate with respect to the cylinder body, and A first engagement mechanism that movably engages is provided, and a second engagement mechanism that rotates the operation member as the plug body rotates is provided between the plug body and the operation member. A cam surface provided between the operating member and the tubular body, the cam surface being provided in the window hole of the operating member, and the contact portion provided on the tubular body so as to contact the cam surface. And the operation member is moved toward the one end face side of the plug so that the engagement of the second engagement mechanism is released when the plug is rotated from the fully open position side to the substantially closed position. In a gas cock provided with a cam mechanism for moving, the first engagement mechanism is constituted by fitting portions integrally provided in the cylinder body and the valve body, respectively, and is used as an abutting portion of the cam mechanism. A gas cock, characterized in that a protrusion is integrally formed on the outer peripheral surface of the cylindrical body.