JP2001241585A - Pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe joint wherein a total length of a sleeve can be reduced and a fluid flow can be smoothly performed. SOLUTION: The pipe joint having a suitable locking mechanism 14 and comprising a socket 1 and a plug 2 which can be attachably and detachably connected where a hose-end 28 bent in dog leg shape is attached freely rotatable to the socket 1 enabling its direction variable, wherein a connection hole 27 is formed in a main barrel 10 which is constituting the socket 1 with an inclination to the axis, a basal part 28a of the hose-end 28 is rotatably fitted and supported in the connection hole 27, an inner tube 11 is formed in the main barrel 10, and a valve pusher 12 is built in split form at the nose of the inner tube 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pipe joint mainly used for connecting gas pipes.

[0002]

2. Description of the Related Art Rapid pipe joints are used as hoses for gas combustion appliances and as joints for main plugs. In general, the main cock is buried in the wall or floor, and the main cock is provided with a fitting plug, while the gas hose that supplies gas to the gas combustion equipment has a fitting socket at the end. And
In use, the gas can be supplied to the gas-burning device by connecting the socket to the plug.

Conventionally, as a pipe joint of this type, as a measure for preventing accidents caused by a gas hose, a hose end is bent in a substantially elliptical shape, and the hose end is rotatably attached to a socket so that its direction can be changed. It has been known.

In this pipe joint, an adapter is attached to a main cylinder constituting a socket so that an axis thereof is inclined with respect to an axis of the main cylinder, and a base of a hose end bent substantially in a letter shape is attached to the adapter. Are rotatably fitted and held,
By rotating the hose end, the direction of the hose end can be changed in a range from parallel to a right angle with respect to the axis of the main cylinder constituting the socket. According to such a pipe joint, the direction of the hose end can be freely changed with respect to the socket, so that the gas hose connected to the hose end can be connected, for example, in a direction that does not hinder walking.

[0005]

In a pipe joint used for gas pipe connection, when a socket is connected to a plug buried in a wall or floor, the amount of projection of the socket from the wall or floor is reduced. Although it is preferable from the viewpoint of safety to reduce the size of the socket as much as possible, according to the pipe joint having the above structure, the hose end is attached to the main cylinder constituting the socket via the adapter. When the socket is connected to the plug, there is a problem that the amount of protrusion of the socket from the wall surface or the floor surface increases.

Further, according to the above-mentioned pipe joint, the opening end of the passage at the base of the hose end is opened in the passage of the main cylinder so as to intersect the axis of the passage of the main cylinder. Therefore, there is a problem that the resistance of the gas fluid at the front surface of the opening end of the base of the hose end increases, and the flow rate decreases.

An object of the present invention is to provide a pipe joint which can reduce the overall length of a sleeve and can perform fluid flow without hindrance.

[0008]

According to the present invention, in order to achieve the above object, the invention according to claim 1 comprises a socket and a plug which are provided with an appropriate locking mechanism and which can be detachably connected. A pipe joint which is rotatably mounted so that a hose end bent in a substantially rectangular shape can change its direction, and a main cylindrical body having a communication hole formed inside the socket, A connection hole connected to the flow hole is formed in a direction inclined with respect to the axis, and a base of the hose end is rotatably fitted and supported in the connection hole,
Further, an inner cylinder is formed in the main cylinder, and a valve pressing body is divided and formed at a tip of the inner cylinder.

[0009] With this configuration, the hose end has its base portion fitted and supported in the connection hole formed in the main cylindrical body constituting the socket. Can be shorter. Further, since the valve pressing body formed at the tip of the inner cylindrical body in the main cylindrical body is formed separately from the inner cylindrical body, in forming the main cylindrical body, a flow hole formed inside is formed. The inner diameter can be increased without being restricted by the valve pressing body, and the flow rate of the fluid can be sufficiently ensured.

According to a second aspect of the present invention, in the flow hole formed in the main cylinder body according to the first aspect, a fluid reservoir space entirely opposed to a distal end surface of a base of the hose end is formed. It is characterized by having.

[0011] With this configuration, the fluid flowing through the flow hole enters the fluid reservoir space formed so as to entirely oppose the front surface of the base end of the hose end, and flows into the hose end. The resistance of the fluid does not increase, and the fluid can be circulated without hindrance.

[0012] The invention according to claim 3 is the invention according to claim 1 or 2.
A guide surface is formed at one end of the flow hole formed in the main cylinder body, the guide surface being inclined so that the surface is continuous toward the distal end surface of the base of the hose end.

[0013] With this configuration, the fluid flowing through the flow hole is guided by the guide surface to the front surface of the distal end surface of the base of the hose end, so that the fluid can flow smoothly.

[0014]

1 and 2 show an embodiment of a pipe joint according to the present invention. FIG. 1 is a longitudinal sectional view of the pipe joint of the present embodiment, and FIG. It is a longitudinal section showing the state of change of the direction of the hose end attached to the socket of the pipe joint.

In the drawings, reference numeral 1 denotes a socket, and 2 denotes a plug detachably connected to the socket 1. A valve body 4 is provided in a flow hole 3 of the plug 2 so as to be urged in a forward direction by a spring 5. The valve element 4 urged in the forward direction by the spring 5 abuts on the valve seat 6 protruding into the communication hole 3 to close the communication hole 3 and retreats against the elastic force of the spring 5 to circulate. The hole 3 is opened. The valve body 4 is provided with a seal ring 7 for sealing between the valve body 4 and the valve seat 6. On the outer periphery of the plug 2, an annular groove 8 for locking a lock ball constituting a locking mechanism described later.
Is provided.

The socket 1 is constituted by a main cylindrical body 10 provided therein so as to pass through a flow hole 9. Inside the main cylinder 10, an inner cylinder 11 protrudes toward the distal end, and the distal end of the inner cylinder 11 is built into the plug 2 when the socket 1 and the plug 2 are connected. A valve pressing body 12 which comes into contact with the pressed valve body 4 and presses the valve body 4 to retreat is protruded. The inner cylindrical body 11 and the valve pressing body 12 are formed separately from each other. In the joint fixing means for connecting the inner cylindrical body 11 and the valve pressing body 12, it is impossible to use elastic deformation of the material. It is not particularly limited, for example, such as putting, screwing, welding, and bonding with an adhesive. The valve pressing body 12 has a communication hole 13 communicating with the communication hole 9. The rear end of the inner cylinder 11 is integrated with the main cylinder 10 to form the inner cylinder 11 and the main cylinder 1.
There is a bag-like shape between 0 and.

Reference numeral 14 denotes a locking mechanism for detachably connecting the socket 1 and the plug 2 and has the following configuration in this embodiment.

A plurality of through-holes 15 are formed in the circumferential direction at the end of the main cylinder 10 constituting the socket 1, and the diameter of the through-holes 15 is larger than the thickness of the cylinder wall of the main cylinder 10. The ball 16 is fitted so as to be able to come and go in the centrifugal direction.

A sleeve 17 is provided on the outer periphery of the main cylinder body 10 to move forward to push the lock ball 16 in the centripetal direction, and to retract to release the push to enable movement in the centrifugal direction. The sleeve 17 is biased in the forward direction by a spring 18. Reference numeral 19 denotes a lock ball pressing surface formed on the inner surface of the sleeve 17, and reference numeral 20 denotes a lock ball pressing release concave portion also formed on the inner surface of the sleeve 17.

A movable cylinder 21 is axially slidably fitted between the main cylinder 10 and the inner cylinder 11.
In the forward position, the lock ball 16 is supported by its outer peripheral surface to prevent the lock ball 16 from moving in the centripetal direction, that is, immersing into the main cylindrical body 10, and retreating from the lock ball 16 in the centripetal direction of the lock ball 16 This movable cylinder 21 is urged in the forward direction by a spring 22.

The sleeve 17 and the movable cylinder 21
When the movable cylinder 21 is at the forward position, the lock ball 16 is supported by the movable cylinder 21 from the centripetal side, moves in the centrifugal direction, and protrudes outward from the main cylinder 10. The lock ball 16 enters the lock ball pressing release recess 20 of the sleeve 17 at the retracted position, and a step 33 formed between the lock ball pressing surface 19 and the lock ball pressing release recess 20 engages with the lock ball 16. As a result, the sleeve 17 is prevented from advancing and is held in the retracted position, and when the movable cylinder 21 is retracted and comes off the lock ball 16, the lock ball 16 is pushed by the sleeve 17 and moves in the centripetal direction. As a result, the sleeve 17 moves forward and the lock ball pressing surface 19 formed on the inner peripheral surface thereof moves.
As a result, the lock ball 16 is pressed in the centripetal direction, and the lock ball 16 is prevented from moving in the centrifugal direction.

The movable cylindrical body 21 is configured such that the distal end thereof comes into contact with the distal end of the plug 2 inserted into the socket 1 when the socket 1 and the plug 2 are connected, and is pushed back by the plug 2. At the tip of the movable cylinder 21, a packing 23 is provided which abuts on the tip of the plug 2 and seals between the movable cylinder 21 and the plug 2. The inner peripheral surface of the movable cylinder 21 and the inner cylinder 11
A seal ring 24 for sealing between the outer peripheral surface and the outer peripheral surface is mounted. The movable tubular body 21 is prevented from coming off in the forward direction by the stopper portion 25 protruding from the rear end outer periphery abutting against the stopper portion 26 protruding from the inner periphery of the main tubular body 10.

On the rear end side of the main cylinder 10, a connection hole 27 communicating with the flow hole 9 is formed so that its axis B is inclined with respect to the axis A of the main cylinder 10. In the connection hole 27, a base 28a of a hose end 28 having a base 28a bent in a substantially rectangular shape is rotatably fitted and supported via a locking member 29 to rotate the hose end 28. Thereby, the direction of the hose end 28, that is, the axis C of the hose end 28 can be changed in a range from parallel to a right angle with respect to the axis A of the main cylindrical body 10 constituting the socket 1. On the outer periphery of the base 28a,
A seal ring 30 that seals between the base 28a and the connection hole 27 is mounted.

The flow hole 9 of the main cylinder 10 has a base 28 a of a hose end 28 fitted in the connection hole 27.
Pool space 31 entirely opposed to the front surface of the tip surface of
Are formed in a direction substantially parallel to the distal end surface of the base 28a. In addition, a flow hole 9 formed in the main cylindrical body 10 is provided.
A guide surface 32 is formed at one end of the hose end 28 so as to be inclined so that the surface continues toward the distal end surface of the base 28a of the hose end 28.

According to the pipe joint having the above structure, the hose end 28 is attached to the socket 1 by inserting the base 28a of the hose end 28 into the inclined connection hole 27 formed in the main cylindrical body 10 constituting the socket 1. Adapters are no longer required, and the socket 1
Can be shortened, and downsizing can be achieved. Further, since an adapter or a seal ring for sealing between the adapter and the main cylinder is not required, the number of parts can be reduced, and the cost can be reduced.

Further, since the valve pressing body 12 formed at the tip of the inner cylinder 11 of the main cylinder 10 is formed separately from the inner cylinder 11, the molding of the main cylinder 10 The inside diameter of the flow hole 9 formed inside can be increased without being restricted by the valve pressing body 12, and the flow rate of the fluid can be sufficiently ensured.

The flow hole 9 of the main cylinder 10 has a base 28 a of a hose end 28 fitted in the connection hole 27.
Pool space 31 entirely opposed to the front surface of the tip surface of
Is formed in a direction substantially parallel to the distal end surface of the base portion 28a, so that the fluid flowing through the flow hole 9 is
1 and flows into the hose end 28, so that the resistance of the fluid at the front surface of the distal end surface of the base 28a of the hose end 28 does not increase, and the flow of the fluid can be performed without any trouble.

A base 28 a of the hose end 28 is provided at one end of the flow hole 9 formed in the main cylinder 10.
Guide surface 3 that is inclined so that the surfaces continue toward the tip end surface
Since the fluid passage 2 is formed, the fluid flowing through the flow hole 9 is guided by the guide surface 32 to the front surface of the distal end surface of the base 28a of the hose end 28, so that the fluid can flow smoothly.

[0029]

As described above, according to the first aspect of the present invention, the base of the hose end is fitted and supported in the connection hole formed in the main cylinder constituting the socket. The overall length of the socket can be reduced as compared with the structure in which the socket is attached via the adapter. Further, since the valve pressing body formed at the tip of the inner cylindrical body in the main cylindrical body is formed separately from the inner cylindrical body, in forming the main cylindrical body, a flow hole formed inside is formed. The inner diameter can be increased without being restricted by the valve pressing body, and the flow rate of the fluid can be sufficiently ensured. Furthermore, compared to a structure that can be attached via a conventional adapter, there is no need for an adapter or a seal ring for sealing between the adapter and the main cylinder.
The number of parts can be reduced, and the cost can be reduced.

According to the second aspect of the present invention, the flow hole formed in the main cylinder has a fluid reservoir space entirely opposed to the distal end face of the base of the hose end. Therefore, the fluid flowing through the flow hole enters the fluid reservoir space formed so as to entirely oppose the front surface of the base end of the hose end, and flows into the hose end. The flow of the fluid can be performed without any trouble without increasing the resistance.

According to the third aspect of the present invention, one end of the flow hole formed in the main cylinder is inclined so that the surface is continuous toward the distal end surface of the base of the hose end. Since the guide surface is formed, the fluid flowing through the flow hole is guided by the guide surface to the front surface of the distal end surface of the base of the hose end, so that the fluid can flow smoothly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of an embodiment of a pipe joint according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a changed state of a direction of a hose end attached to a socket of the pipe joint of the present example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2 Plug 3 Flow hole 4 Valve body 5 Spring 6 Valve seat 7 Seal ring 8 Annular groove 9 Flow hole 10 Main cylinder body 11 Inner cylinder body 12 Valve pressing body 13 Communication hole 14 Locking mechanism 15 Through hole 16 Lock ball 17 Sleeve Reference Signs List 18 spring 19 lock ball pressing surface 20 lock ball pressing release concave portion 21 movable cylinder 22 spring 23 packing 24 seal ring 25 stopper portion 26 stopper portion 27 connection hole 28 hose end 28a base 29 locking member 30 seal ring 31 fluid pool space 32 Guide surface 33 step

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H104 JA02 JA04 JB04 JC08 JD09 LF16 LG02 3J106 AB01 BA01 BB06 BC04 BC12 BD01 BE31 CA16 EA03 EB07 EC02 EC07 ED32 EE13 EF05 GA01 GA04 GA13 GB02 GB10

Claims (3)

[Claims] 1. A socket having a suitable locking mechanism and removably connectable, comprising a socket and a plug, and a hose end bent in a substantially rectangular shape is rotatably attached to said socket so that its direction can be changed. Pipe fitting, the main tubular body having a through hole formed inside the socket,
A connection hole connected to the communication hole is formed in a direction inclined with respect to the axis, and a base of the hose end is rotatably fitted and supported in the connection hole. A pipe joint, wherein a body is formed, and a valve pressing body is dividedly formed at a tip of the inner cylindrical body. 2. A flow hole formed in the main cylinder body,
2. A fluid reservoir space which is entirely opposed to a distal end surface of a base of the hose end is formed.
The pipe joint according to 1. 3. A guide surface which is inclined at one end of a flow hole formed in the main cylinder so as to be continuous with a front end surface of a base of the hose end. The pipe joint according to claim 1 or 2, wherein