JPS596307Y2 - gaskotok - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas cock, in particular, to a combination of a cock body with a gas outlet on the operating part and a plug connected and held to the cock body, and the plug can open and close the gas cock, that is, the closure. This is about a gas cock.

As this type of gas cock, the application was already made in 1986-573.
No. 21 was proposed, as shown in Figures 7 and 8.
A cylindrical shaft 9 is provided in the large diameter part of the closure 5 provided on the cock body 2,
The tip of this cylindrical shaft 9 serves as a connection port, and this connection port serves as a gas outlet.

This connection port has a plug 1 installed separately from the cock body.
The upstream end 27 of the connecting pipe 23 is inserted, and the plug 1 is in the connected state in this inserted state.In order to maintain this connected state, the combination of the clutch cylinder 8 and the balls 15, 15 is inserted into the cock body 2. It is arranged in the connecting cylinder part 7, and on the other hand,
In the plug 1, a groove 29 is provided in an operating tube 24 which is rotatably mounted on the connecting tube 23.

In this case, as described above, when the plug 1 is inserted and connected to a predetermined position of the cock body 2 with the closing member 5 in the fully closed position and rotated, the ball 15. Due to the relationship between the balls 15 and the through holes 22, 22 provided in the connecting pipe portion, the balls 15, 15 protrude inward and engage with the grooves, and the plug 1 is kept in the connected state (retaining shape) due to this engagement. ).

Further, due to the engagement between the operating barrel 24 and the clutch barrel 8, the closing member 5 rotates integrally with the rotation of the operating barrel.

However, in the conventional device, the plug 1 is only inserted into the cock body 2 when the cock is in the fully closed position, but is not locked in the connected state.

Therefore, if the cock is completely turned off and left in this state for a certain period of time, the plug 1 may come off from the cock body 2 due to the weight of the rubber tube, or the connection between the plug 1 and the cock body 2 may become loose.

Therefore, when opening the cock, be sure to plug 1
It is necessary to perform an operation to connect or to ensure this connection state.

In the present invention, a clutch cylinder 8 is provided in the connecting cylinder part 7 which is the plug connection side, and the clutch cylinder and the closing member 5 form a cock body which rotates together, and a flow path in the closing member by insertion and connection to the clutch cylinder. A plug 1 comprising a connecting pipe 23 communicating with the connecting pipe and an operating tube 24 rotatably fitted onto the connecting pipe,
This type of gas cock is such that when the plug 1 is inserted into the clutch cylinder 8 of the cock body to a certain position and the operating cylinder 24 is rotated in the opening direction, the plug 1 is held in a manner that prevents it from coming off by the cock body 2. In order to make it possible to open and close the gas cock by connecting and disconnecting the plug independently, it is recommended that the plug be rotatably connected to the cock body only by the plug connection operation. That is the issue.

The technical means of the present invention for solving the above problem is to provide a pair of retaining pieces 25. 25 is pivotally supported so as to be swingable in the radial direction, and the base protrusion 36 near the pivot portion of this retaining piece and the retaining portion 33 at the tip protrude from the operation tube 24 in the radial direction, and the retaining portion 33 is The operation tube 2 is placed close to the concave groove 29 on the tip side of the operation tube 24, and the operation tube 2 is attached to these retaining pieces.
4 is biased to protrude in the radial direction by a ring spring 31 provided in the cock body 2, and on the other hand, the flange portion 1B that abuts the open end of the clutch cylinder 8 of the cock body 2 is pressed against the open end of the connecting cylinder portion 7 of the cock body 2. A pair of notches 11, 11 and the engagement pieces 25, 25 are connected to each other and are provided at the open end of the clutch cylinder 8.
This is because the engaging portions 33 and 33 of the two are made to coincide with each other.

According to the above technical means of the present invention, the following effects can be obtained.

When the engaging pieces 25, 25 of the plug 1 and the notches 11, 11 of the clutch cylinder 8 provided in the connecting cylinder part 7 of the cock body are aligned and connected to the cock body 2, the connecting pipe 2 of the plug 1 is connected to the cock body 2.
The upstream end 27 of the clutch cylinder 3 is hermetically connected to the cylinder shaft 9 of the closing member 5, and at the same time, the retaining part 33 engages with the flange 18 in a manner that prevents it from coming off, and also meshes with the notch 11 of the clutch cylinder 8.

Therefore, in this state, the operating barrel 24 and the closing member 5 rotate integrally through the clutch barrel 8 as the operating barrel of the engagement plug 1 rotates.

When the clutch cylinder 8 rotates open from the fully open position, the ball in the clutch cylinder B and the concave groove 29 located on the tip side of the operating cylinder 24
are engaged, and this also holds the plug 1 in a manner that prevents it from coming off.

At this time, the retaining piece 25 and the flange 18 remain engaged.

To remove the plug 1, simply rotate the operation tube 24 to the fully closed position and push in the base protrusion 36 of the retaining piece 25. As a result, the retaining part 33 and the flange 1B are disengaged and the plug is removed. Can be removed.

Due to the above action, the present invention has the following unique effects.

When the cock is rotated back to the fully closed position, the plug remains connected to the cock body 2.
This eliminates the inconvenience of the plug 1 coming off or loosening from the cock body 2 every time the cock is opened and closed.

In the "open" position of the cock, the plug 1 and the cock body 2 are engaged by the ball 15 in addition to the engagement by the engagement pieces 25 and 7 langes 18.
Since it is locked in the connected state by engagement with the operation tube 24, there is no need to worry about the plug 1 coming off even if the retaining piece 25 is pushed in by mischief or the like.Hereinafter, embodiments of the present invention will be explained based on the drawings. Add.

1 and 2 show the connected and disconnected states of the plug 1 and the cock body 2 of the gas cock of the present invention, and the cock body 2 has an L-shaped gas circuit. ,
A gas flow path from the gas port 3 to the connection port 4 serving as a gas outlet is opened and closed by the rotation of the closure 5.

For this purpose, an L-shaped passage hole 6 is formed in the closure 5, and the downstream end of the passage hole corresponds to a cylinder shaft 9 that engages with a clutch cylinder 8 housed in a connecting cylinder part 7 of the cock body 2. , the clutch tube 8
It communicates with the opening 10 of.

The clutch cylinder can be slid a certain amount while still being engaged with the cylinder shaft 9 of the closing member 5, and can also be rotated within the connecting cylinder part 7 in an airtight state around the outer periphery.

Furthermore, notches 11, 11 are provided at the tip of the clutch cylinder on its diameter line, and a pair of recesses 12, 12 are formed on the outer periphery of an appropriate range including the notches, as shown in FIG. The bottom part 13 of the cutout part 11, 11,
13 and the bottoms 14, 14 of the recesses 12, 12 as appropriate, so that the former bottom 13. 13 is the bottom part 14 of the former. It is ranked lower than 14.

Further, a ball 1 is provided near the other of the notches 11, 11.
Through holes 1B, 1B for accommodating 5 are provided on the diameter line,
The cross section of the through hole is shaped appropriately to prevent it from falling toward the inner circumferential side of the clutch cylinder 8.

The clutch cylinder 8 is housed in the connecting cylinder part 7 of the cock body 2, and is prevented from coming off by a flange 18 of a cylindrical cover 17 that fits onto the connecting cylinder part, and a set screw fixes the cylindrical cover 17. 19. The tip end of the clutch tube 8 engages with the notches 11, 11 of the clutch cylinder 8, and is also prevented from coming off.

In this accommodated state, as described above, the protrusions 20, 20 protruding from the base of the clutch cylinder 8 are connected to the notches 21, 2 of the cylinder shaft 9.
At the same time, the closing member 5 is in the fully closed position (second
In the state shown in the figure), the through holes 22, 22 provided in the connecting cylinder portion 7 of the cock body 2 are connected to the balls 15, 22 accommodated in the clutch cylinder 8.
15.

(Fig. 4) Next, the plug 1 consists of a connecting tube 23, an operating tube 24 that rotatably holds the connecting tube, and a pair of screws provided vertically on the diameter line of the operating tube and pivotably supported. engagement piece 25
. It corresponds to the packing 28 provided inside the clutch cylinder 8.

Further, a concave groove 29 having an arcuate cross section is provided on the outer periphery of the base of the operation barrel 24.
is wound, and this is the above ball 15. 15, and the engaging piece 25. The free end of 25 reaches one side of the concave groove, and the engagement piece restricts the most protruding position by a retaining ring 30 that is fitted externally to the base of the operating barrel 24 and is fitted internally into the operating barrel 24. An outward swinging force is applied by the ring spring 31 which is partially opened.

To explain the operation of the above-mentioned embodiment in more detail, when the plug 1 is not connected, the closing member 5 in the cock body 2 is in a fully closed state, and the clutch cylinder 1 is also supported by a spring interposed between the closing member 5 and the closing member 5. 32 extends to the distal end side of the connecting cylinder portion 7, and the set screw 19. The tip of 19 is the notch 11, the bottom 1 of 11
It is in contact with 3 and 13.

Therefore, in this state, the clutch cylinder 8, that is, the closing member 5 is locked in a non-rotating state by the engagement of the set screws 19, 19 with the notches 11, 11.

(Fig. 6A) Next, the plug 1 is attached to the engaging pieces 25, 25.
The engaging parts 33, 33 are the notches 11, 1 of the clutch cylinder 8.
When inserted into the clutch cylinder so as to match 1,
Retention part 33. 33 is movable and retractable, so after being pushed in by the flange 18 of the cylindrical cover 17, it returns to engage with the flange 18.

Incidentally, since the inner diameter of the clutch cylinder 8 is smaller than the inner diameter of the flange 18, the above-mentioned engagement cannot be performed at a position other than the above-mentioned proper position.

In this engaged state, the upstream end 27 of the connecting pipe 23 is fitted into the packing 28, and the stepped portion 34 of the operating cylinder 24 is in contact with the tip of the clutch cylinder 8. Even in this state, the clutch The cylinder 8 and the cock body 2 are in a locked state as shown in FIG. 6A, while the balls 15, 15 are aligned with the groove 29 of the operating cylinder 24 as shown in FIG.

Next, when the operation cylinder 24 is pushed in, the set screw 19 is inserted into the bottoms 14, 14 of the recesses 12, 12 on the outer periphery of the clutch cylinder 8.
The clutch cylinder 8 is located away from the clutch cylinder 8, and the clutch cylinder 8 can be rotated.

When the operation tube 24 is rotated in this state, the closure 5 is rotated integrally with the operation tube 24, and the flexible tube 26 is rotated while the gas valve 3 is closed.
When the circuit to is connected, the balls 15, 15 are removed from the through holes 22, 22 of the connecting cylinder part 7, and these balls are made to protrude inward and engage with the groove 29 of the operating cylinder 24.
At the same time, the set screws 19, 19 are inserted into the recess 12 of the clutch cylinder 8.
, 12's bottom portions 14, 14.

(C in Figures 1, 5, and 6) Note that this fully open position is set by the set screw 19. 19 and one side 35, 35 of the outer periphery of the clutch cylinder 8, and by setting this recess appropriately in advance, the passage hole 6 of the closing member 5 can be opened at this contact position. The upstream end coincides with gas population 3.

Next, from this state, when the operating cylinder 24 is rotated back to the initial position, the notches 11, 11 of the clutch cylinder 8 and the set screw 19. 19 (B in Figures 2 and 6)
), the clutch cylinder is returned by the spring 32, but the engaging pieces 25, 25 of the operating cylinder 24 are in the advanced state by the ring spring 31, and the engaging parts 33, 33 engage with the flange 18 of the cylindrical cover 17. However, plug 1 is prevented from coming off.

Also in this state, the upstream end 27 of the connecting pipe 23 is fitted into the packing 28 in an airtight manner.

If the above operation is performed again from this state, the closing member 5 will be fully opened by the action described above and will be maintained in this state.

To remove the plug 1 from the fully closed state, use the engaging piece 25 provided on the operation tube 24. 25 base protrusion 36. 36 and pull it out, thereby releasing the retaining portion 33. 33
is pushed in and disengaged from the flange 18.

Incidentally, in the above, the engagement between the operating cylinder 24 and the clutch cylinder 8 is achieved by the engagement between the engaging parts 33, 33 of the engaging pieces 25, 25 and the notches 11, 11, and the The amount of protrusion of the joint portion is set appropriately in advance.

In the case of the embodiment described above, the cock can be opened only by pushing in the operation tube 24, so that the inconvenience of the cock being opened carelessly due to mischief or the like can be prevented.

Furthermore, since the connecting tube 23 and the operation tube 24 that connect the flexible tube 26 made of gas rubber or the like can be rotated independently of each other, the flexible tube 26 may not be twisted when the operation tube 24 is operated to open the cock. This provides excellent operability and prevents gas leakage accidents caused by the twisting.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the embodiment of the present invention in its usage state (fully open state), Fig. 2 is a cross-sectional view of the main part when the plug is not connected, Fig. 3 is an exploded perspective view of the main part of the cock body, Fig. 4, FIG. 5 is an explanatory diagram of the operation of the main parts when the plug is connected, FIG. 6 is a diagram showing the relationship between the clutch cylinder 8 and the set screw 19, and FIGS. 7 and 8 show a conventional example. In the figure, 1... Plug, 2... Cock body, 5... Closer, 7... Connecting cylinder part, 2
3... Connection pipe, 24... Operation tube, 35
......Engagement piece, 26...Flexible tube.

Claims (1)

[Scope of utility model registration request] A clutch cylinder 8 is provided in the connection cylinder part 7 which is the plug connection side,
A cock body in which the clutch cylinder and the closure 5 rotate integrally, a connecting pipe 23 that communicates with the flow path in the closing member by insertion into the clutch cylinder, and an operation in which the connecting pipe is rotatably fitted on the outside. After inserting the plug 1 into the clutch cylinder 8 of the cock body to a certain position and rotating the operation cylinder 24 in the opening direction, the ball in the clutch cylinder and the operation In a gas cock of the type in which a concave groove 29 provided in the cylinder engages and the plug 1 is held in a manner that prevents it from coming off by the cock body 2, a pair of retaining pieces 25. 25 is pivotally supported so as to be swingable in the radial direction, and the base protrusion 36 near the pivot portion of this engagement piece and the engagement portion 33 at the tip protrude from the operation tube 24 in the radial direction, and the engagement portion 33 is These retaining pieces are placed close to the concave groove 29 on the tip side of the operating barrel 24, and are urged to protrude in the radial direction by a ring spring 31 provided in the operating barrel 24, while the clutch barrel 8 of the cock body 2 is A flange portion 18 that abuts the open end is connected to the open end of the connecting cylinder portion 7 of the cock body 2, and a pair of notches 11 provided at the open end of the clutch cylinder 8.
11 and the engaging portions 33, 33 of the engaging pieces 25, 25 are aligned.