JPH0342310Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pipe joint with a valve body used for connecting a gas consumption side hose to a gas supply source side.

[Prior Art] A hose end attached to a gas supply source attached to a floor or wall is generally equipped with a stopper that opens and closes the gas flow path by rotation. Gas is supplied from the gas supply source to the gas appliance by operating this stopper at the beginning of using the gas appliance and opening the gas passage at the end of the hose.

When connecting a hose to the above-mentioned hose end, most of them are currently using so-called one-touch type pipe fittings, which have a connection part to the hose end at one end and a hose nipple at the other end, but recently, the connection mechanism Due to advances in technology, there has been an attempt to use a hose end that has only a built-in valve element that opens the gas flow path when connected to the pipe joint, and does not have a stopper that opens and closes the gas flow path by the rotational operation. When a hose connected to a gas appliance is connected to such a hose end, the valve pusher provided on the interposed pipe joint pushes the valve body built into the hose end to open the gas flow path, and the gas is supplied at the same time as the connection. When the pipe joint is removed from the hose end, the valve body in the hose end is automatically closed.

[Problem that the invention aims to solve] Traditionally, users were instructed to always close the gas main valve when not using gas appliances for a long time, so if the gas main valve was not installed, consumers would feel anxious. It seems so.

The present invention aims to eliminate the above-mentioned anxieties and concerns.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a pipe joint having a connection part to a hose end at one end of the joint main cylinder and a hose nipple at the other end. A valve cylinder body having a hose nipple and a valve chamber is provided so that the axes of the joint main cylinder body and the valve cylinder body intersect, and a hose nipple is provided in the valve chamber of the valve cylinder body. Moves with restricted rotation in the axial direction,
A valve body is provided to open and close communication between the inside of the joint main cylinder body and the hose nipple, and a compression coil spring is interposed between the valve body and the valve cylinder body to bias the valve body in the opening direction. The cylindrical body is provided with a rotary operation tube, and inside this rotary operation tube, an inclined surface section that is inclined with respect to the axis, and a parallel surface section that is orthogonal to the axis center are formed at the end of this inclined surface section. By bringing the valve body into contact and rotating the rotary operation cylinder, the inclined surface portion moves the valve body in the axial direction to open and close communication between the inside of the joint main cylinder body and the hose nipple, and the parallel surface portion moves the valve body in the same direction. The intended purpose was achieved by employing a structure that locks in position and maintains communication between the inside of the main cylinder of the joint and the hose nipple in a closed state.

[Function] When the main cylinder of the joint is connected to the hose end with a built-in valve body, the valve body of the hose end opens when connected, and
Gas flows into the joint main cylinder. The valve body of the valve body provided in the main body of the joint is moved in the opening direction by the elastic force of the compression coil spring, and the inside of the main body of the joint and the hose nipple provided on the valve body are in communication. Therefore, the gas flowing into the main cylinder of the joint passes through the hose nipple and is supplied to the gas appliance. When you want to cut off the gas supply to the gas appliance, rotate the rotary operation tube. By rotating this rotary operation tube,
The valve body that comes into contact with the inclined surface provided inside the rotary operation cylinder moves forward against the elastic force of the compression coil spring due to this inclined surface, and when it reaches the end position of the inclined surface, it moves inside the main cylinder of the joint. Close communication with hose nipple. When the rotary operation cylinder is further rotated in the same direction and the valve body is positioned on the parallel surface part that is continuous with the end of the inclined surface part, the valve body is prevented from retreating by the parallel surface part, and the communication between the joint main cylinder body and the hose nipple is prevented. Hold closed. When the joint main cylinder body and the hose nipple are to be communicated with each other, the rotary operation cylinder is rotated in the opposite direction, and the valve body located on the parallel surface portion is moved to the inclined surface portion side. As a result, the valve body moves backward while rotating the rotary operation cylinder by the elastic force of the compression coil spring, and the main cylinder of the joint and the hose nipple communicate with each other, and the gas that has reached the main cylinder of the joint is transferred to the hose nipple. It will flow towards the appliance.

[Examples] Hereinafter, the present invention will be described in detail based on examples shown in the drawings, but the present invention is not limited to the examples.

In FIG. 1, 1 is a joint main cylinder body, 2 is a connection part to a hose end provided at one end of the joint main cylinder body 1, and 3 is a connection part to the hose end provided at the other end of the joint main cylinder body 1. The inside of the valve cylinder body 3 communicates with the inside of the joint main cylinder body 1, and both ends protrude from the joint main cylinder body 1. Reference numeral 4 denotes a hose nipple that is fitted and fixed to the protruding cylindrical portion 5 at one end of the valve cylinder body 3. Hose nipple 4
One end thereof opens into the valve cylinder body 3, and a valve seat 6 is formed in the opening. Reference numeral 7 designates a retaining pin that rotatably supports the hose nipple 4 on the one-end protruding cylindrical portion 5 of the valve body 3, and 8 a seal ring that seals between the one-end protruding cylindrical portion 5 and the hose nipple 4.

9 is a valve chamber formed in the cylindrical portion 10 projecting from the other end of the valve cylinder body 3; 11 is a valve body slidably fitted and supported in the valve chamber 9; this valve body 11 is connected to the hose nipple; 4 into the valve chamber 9 to cut off communication between the inside of the joint main cylinder 1 and the inside of the hose nipple 4. The valve body 11 includes a valve head 12 that abuts a valve seat 6 formed in an opening in the valve cylinder body 3 of the hose nipple 4, a valve rod 13 with the valve head 12 fixed to the end thereof, and a valve rod 13. It consists of a supporting sliding body 14. A hole 15 is formed in the sliding body 14 at its axis, and the valve rod 13 is fitted into this hole 15 so as to be movable in the axial direction. The hose nipple 4 is biased forward, that is, toward the axial opening side of the hose nipple 4, by a compression coil spring 16 interposed between the hose nipple 4 and the end of the hose nipple 4.

17 is a bulge formed on the outer periphery of the valve rod 13; 18;
is a reduced diameter part formed at the opening of the hole 15, and the above-mentioned bulge 17 is engaged with this reduced diameter part 18 to open the hole 1.
The valve rod 13 is prevented from slipping out from the valve 5.
The sliding body 14 of the valve body 11 having such a structure is fitted into the valve chamber 9 of the other end protruding cylindrical portion 10 of the above-mentioned valve cylinder body 3 so as to be slidable in the axial direction. A guide groove 19 is formed in the axial direction in the other end protruding cylindrical portion 10 into which the sliding body 14 is fitted, and the sliding body 14 engages with the guide groove 19 and its tip is connected to the other end protruding cylindrical portion 10. A pin 20 protruding outward is provided, and the other end protruding cylindrical portion 10
The sliding body 14 fitted with the pin 20 is inserted into the guide groove 19.
Rotation is restricted by engagement of the two, and only movement in the axial direction is possible.

A compression coil spring 21 is interposed between the valve body 11 and the valve cylinder body 3 and biases the valve body 11 in the opening direction. A protruding portion 2 of a pin 20 that is locked to the outer periphery and whose other end protrudes from the guide groove 19
2 through a flat washer 23.

Reference numeral 24 designates a bag-shaped rotary operation cylinder that is rotatably and airtightly fitted to the other end protruding cylinder part 10 of the valve cylinder body 3. Reference numeral 25 denotes a bulge formed on the outer periphery of the other end protruding cylindrical portion 10, and 26 denotes a reduced diameter portion formed on the inner periphery of the opening of the rotary operation cylinder 24, and this reduced diameter portion 26 is engaged with the bulged portion 25. The rotation operation cylinder 24 is connected to the other end of the protruding cylinder part 1.
It is prevented from escaping from 0. A seal ring 27 has a U-shaped cross section and seals between the rotary operation cylinder 24 and the other end protruding cylinder part 10.

Inside the rotary operation cylinder 24, there is an inclined surface portion 28 that is inclined with respect to the axis, and a parallel surface portion 2 that is perpendicular to the axis and that is connected to the forward end of this inclined surface portion 28.
9 is formed, and the protruding portion 22 of the pin 20 comes into contact with these surface portions 28 and 29, and the rotation operation cylinder 24
When rotated, the pin 20 is guided by the inclined surface part 28 and moves forward against the elastic force of the compression coil spring 21, and as the pin 20 moves forward, the sliding body 14 moves forward. It's summery. By moving the pin 20 to the parallel surface portion 29, the pin 20 is held at the same position by the parallel surface portion 29 and is prevented from retreating. Then, when the rotary operation tube 24 is rotated in the opposite direction and the pin 20 is moved from the parallel surface portion 29 to the inclined surface portion 28, the pin 20 rotates the rotation operation tube 24 by the elastic force of the compression coil spring 21. It's starting to move backwards.

Further, the length of the inclined surface portion 28 in the axial direction is the distance that the valve body 11 moves within the valve chamber 9, and the pin 20 is positioned at the forward end of the inclined surface portion 28. At this time, the valve head 12 of the valve body 11 which has advanced in the valve chamber 9 due to the advancement of the pin 20 comes into contact with the valve seat 6 at the opening of the hose nipple 4, thereby closing the communication between the inside of the joint main cylinder body 1 and the hose nipple 4. It's summery.

In addition, the parallel surface portion 29 includes the parallel surface portion 29.
A shallow parallel recess 30 for locking the pin 20 is formed so that the pin 20 in contact with the pin 9 does not easily come off from the surface 29.

In this embodiment, the inclined surface portion 28 and the parallel surface portion 29 are formed on the end face of the collar 42, and by fitting the collar 42 into the rotary operation tube 24, the inclined surface portion 28 and the parallel surface portion are formed inside the rotation operation tube 24. 29, however, the inclined surface portion 28 and the parallel surface portion 29 may be formed directly on the inner wall of the rotary operation cylinder 24.

Note that the connection part 2 to the hose end provided at one end of the joint main cylinder body 1 is the same in structure as the conventional one-touch type pipe joint, and is not particularly limited.

In this embodiment, the hose end 3 shown in FIG.
1 is an outer circumferential groove 3 formed on the outer periphery of the hose end 31 at the tip of the cylindrical portion 32 of the joint main cylindrical body 1 to be inserted.
A locking ball 34 that engages with the locking ball 34 is provided so as to be freely protrusive and retractable in a centrifugal direction, and is biased by a compression coil spring 35 on the outer periphery of the cylindrical portion 32 so that the locking ball 34 engages with the locking ball 34.
A sleeve 36 that presses in the centripetal direction is slidably fitted therein.

On the other hand, on the inner periphery of the cylindrical portion 32, a compression coil spring 37 is applied to prevent the locking ball 34 from moving forward and retracting in the centripetal direction when the hose end 31 is not connected. A locking ball support tube 38 is slidably fitted into the locking ball support tube 38 which is pushed back by the tip of the hose end 31 and allows the locking ball 34 to retract in the centripetal direction. Further, inside the cylinder portion 32, a valve pusher body 41 is provided at the axial center portion. When this valve pusher body 41 is connected to the hose end 31, it is urged forward by a compression coil spring 39 provided on the hose end 31, and the valve body 40, which closes the internal fluid passage of the hose end 31, is pushed forward by the compression coil spring 39 provided on the hose end 31. The hose end 31 is moved backward against the elastic force of the hose end 31 to open the fluid passage of the hose end 31.

Next, the operation of the above embodiment will be explained.

Unless the pin 20 is brought into contact with the orthogonal stepped surface 29 formed inside the rotary operation cylinder 24, the pin 20 is located at the retreating end of the inclined surface portion 28 due to the elastic force of the compression coil spring 21. Along with this, the sliding body 14 has also retreated, and the valve head 12 has separated from the valve seat 6 of the hose nipple 4, leaving its opening open (FIG. 3).

When the connecting part 2 is connected to the hose end 31 in this state, the valve body 40 in the hose end 31 is pushed back by the valve pusher 41, the fluid passage is opened, and gas flows out inside the joint main cylinder body 1. The gas flows towards the hole and the gas appliance is ready for use.

Next, when the rotary operation barrel 24 is rotated to move the pin 20 forward, the sliding body 14 moves forward. pin 20
When it reaches the end of the inclined surface portion 28, the valve head 12 provided at the tip of the valve rod 13 fitted to the sliding body 14 comes into contact with the valve seat 6 of the hose nipple 4. At this time, the valve rod 13 is biased toward the axial opening side of the hose nipple 4 by the compression coil spring 16, so the valve head 12 is biased by the compression coil spring 16.
Even if there is play in the hose nipple 4, the elastic force of the compression coil spring 16 absorbs this play and the opening of the hose nipple 4 caused by the valve head 12 is pressed against the valve seat 6. A reliable closed state can be obtained.

Next, when the pin 20 that has reached the inclined surface portion 28 is moved to the parallel surface portion 29, the pin 20 is prevented from retreating by the parallel surface portion 29, and the closed state is maintained.

When the pin 20 is rotated further, the parallel recess 30
Thereafter, the state in which communication between the inside of the joint main cylindrical body 1 and the hose nipple 4 is cut off is maintained.

[Effects of the invention] As described above, according to the pipe joint according to the present invention, by operating the rotary operation cylinder, the inside of the main cylinder of the joint and the inside of the hose nipple can be communicated with or disconnected from each other at any time. Therefore, for example, when the gas appliance is not used for a long time, if the rotary operation cylinder is operated to close the opening of the hose nipple with the valve body, the flow of gas can be blocked within the joint main cylinder. This provides the same effect as conventionally when turning off the gas by operating the gas main valve, giving the user a sense of security.

In addition, since the valve body is biased in the opening direction, that is, in the backward direction, by the compression coil spring, unless the rotary operation cylinder is operated to lock the valve body to the parallel surface portion, the elastic force of the compression coil spring will cause the valve body to lock. When the body moves backwards and stops halfway down the slope, the user has to operate the rotary operation tube and make sure that the rotation operation tube does not rotate. Since you can know when a store is closed, you can prevent situations where you think it's closed but it's not completely closed. In addition, since the rotary operation tube has only two operations, opening and closing, and the flow rate cannot be adjusted, operational errors can be prevented, resulting in extremely high safety.

Furthermore, in the present invention, since the hose nipple and the joint main cylindrical body are provided in an intersecting manner, the hose connected to the hose nipple can also be used with the hose connected to the wall surface.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal sectional plan view of the main cylinder of the joint, Fig. 2 is a longitudinal sectional side view of the hose end, and Fig. 3 shows the opening of the hose nipple in an open state. A vertical cross-sectional plan view of the joint main cylinder shown,
FIG. 4 is a partially enlarged perspective view of the present invention, and FIG. 5 is an enlarged perspective view showing a collar having an inclined surface portion and a parallel surface portion formed at the end thereof. DESCRIPTION OF SYMBOLS 1... Joint main cylinder body, 2... Connection part, 3... Valve cylinder body, 4... Hose nipple, 9... Valve chamber, 11...
...Valve body, 16... Compression coil spring, 24...
...Rotary operation tube, 28... Inclined surface section, 29... Parallel surface section, 31... Hose end.

Claims (1)

[Scope of utility model registration request] In a pipe joint having a connection part to a hose end at one end of the joint main cylinder and a hose nipple at the other end, a valve cylinder body having a hose nipple and a valve chamber is attached to the joint main cylinder. The valve chamber of the valve cylinder body is provided so that the axes of the valve body and the valve cylinder body intersect with each other, and the hose nipple is arranged in the valve chamber of the valve cylinder body so that its rotation is restricted in the axial direction, and the inside of the joint main cylinder body and the hose nipple are connected to each other. A compression coil spring is provided between the valve body and the valve cylinder body to bias the valve body in the opening direction, and a rotation operation cylinder is provided on the valve body. Inside the rotary operation cylinder, an inclined surface section that is inclined with respect to the axis, and a parallel surface section that is orthogonal to the axis are formed at the end of this inclined surface section, and the valve body is brought into contact with the surface section and the rotation operation is performed. By rotating the cylinder, the inclined surface portion moves the valve body in the axial direction to open and close communication between the inside of the joint main cylinder body and the hose nipple, and the parallel surface portion locks the valve body in the same position to close the joint main cylinder body. A pipe joint that maintains communication between the inside of the body and the hose nipple in a closed state.