JP2002005364A - Pipe coupling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe coupling capable of buffering load applied to a hose end and preventing damage of a socket due to the load. SOLUTION: This pipe coupling comprises the socket 1 and a plug 2 provided with a proper locking mechanism and attachably/detachably connectable and has a base part 28b of the hose end 28 constituted of a main body 28a bent and molded in a substantially V-shape and the base part 28b mounted rotatably on the socket 1 so as to change the direction of the main body 28a. The hose end 28 is constituted in such a manner that a center shaft C of the main body part 28a bent and molded to present the substantially V-shape and a rotary shaft D of the base part 28b are constituted so as to cross each other but so as not to coincide each other on the same plane.

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 into a substantially rectangular shape on a main body and a base, and the base is rotatably connected to a socket, and the gas hose is connected. There is known an apparatus in which the direction of a main body portion to be changed can be changed. The direction of the hose end main body is variable from a direction parallel to the socket to a right angle. 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.

[0004]

Incidentally, such a conventional hose end generally has a configuration in which the center axis of the main body portion and the rotation axis of the base portion coincide with each other, that is, intersect with each other. Therefore, during installation or after installation, the gas hose connected to the hose end body is pulled with a certain beat,
If a strong tensile load is applied to the main body of the hose end in the direction of the center axis, the socket will directly receive the load, and as a result, the hose end mounting portion of the socket and the connecting portion of the socket and the plug Etc. may be damaged.

An object of the present invention is to provide a pipe joint which buffers a load applied to a hose end and prevents breakage of a socket due to the load.

[0006]

In order to achieve the above-mentioned object, the present invention comprises a socket and a plug which are provided with an appropriate locking mechanism and which can be detachably connected. A pipe joint rotatably attached to the socket so that the base of the hose end consisting of the base can change the direction of the main body. In the hose end, the hose end is bent and formed into a substantially rectangular shape. The present invention is characterized in that the central axis of the main body and the rotation axis of the base intersect, but do not coincide on the same plane.

With this configuration, when a strong tensile load is applied to the body of the hose end in the direction of the center axis, the center axis of the body of the hose end and the rotation axis of the base intersect, but are on the same plane. , So that the load received by the base is received at a position deviated from its rotation axis, as a result, the balance is lost, and the rotation of the base absorbs the load. The effect of the load on the socket is reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 (a), 2 (b), 3
1 shows an example of 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 example, FIG. 2 (a) is a front view showing a socket of the pipe joint of the present example, FIG. 2B shows FIG.
FIG. 3A is a left side view of the socket shown in FIG. 2A, and FIG. 3 is an end view taken along line XX of FIG. 2A.

In FIG. 1, reference numeral 1 denotes a socket, and 2 denotes a plug which is 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. Valve body 4
A seal ring 7 for sealing between the valve body 4 and the valve seat 6
Is installed. On the outer periphery of the plug 2, there is provided an annular groove 8 in which a lock ball constituting a locking mechanism described later is locked.

The socket 1 is constituted by a main cylinder 10 provided inside the through 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 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 a bag between the inner cylinder 11 and the main cylinder 10.

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 distal end of the main cylindrical body 10 constituting the socket 1, and a lock ball 16 is fitted into these through-holes 15 so as to be freely retractable in the centrifugal direction.

A sleeve 17 is provided on the outer periphery of the main cylindrical body 10 to move forward to press and move the lock ball 16 in the centripetal direction, and to retreat to release the pressing to enable movement in the centrifugal direction. The sleeve 17 is biased in the forward direction by a spring 18. A lock ball pressing surface 19 and a lock ball pressing release concave portion 20 are formed on the inner surface of the sleeve 17.

A movable cylinder 21 is slidably fitted in the axial direction 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 31 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. Further, the movable tubular body 21 is prevented from coming off in the forward direction by a stopper 25 protruding from the rear end outer periphery abutting against a stopper 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 such that its hole axis B is inclined with respect to the center axis A of the main cylinder 10. Have been. In the connection hole 27, a base 28b of a hose end 28 composed of a main body 28a and a base 28b, which are bent and formed in a substantially elliptical shape, is rotatably fitted and supported via a locking member 29, and the base 28b A seal ring 30 for sealing the space between the base 28b and the connection hole 27 is mounted on the outer periphery of.

By rotating the base 28b of the hose end 28, the orientation of the main body 28a at the hose end 28, that is, the direction of the center axis C of the main body 28a of the hose end 28, is changed. Can be changed in a range from parallel to a right angle with respect to the central axis A of the main cylindrical body 10 constituting. D is a rotation axis of the base 28b of the hose end 28. In such a hose end 28, although the center axis C of the bent main part 28a and the rotation axis D of the base part 28b intersect but do not intersect at the intersection position, that is, they coincide on the same plane. Not configured.

That is, the center axis C of the main body 28a and the base 28
On a plane orthogonal to the rotation axis D at the intersection of the rotation axis D of b, the center axis C is eccentric to the rotation axis D by the length h.

According to the pipe joint having the above construction, the hose end whose base 28b is rotatably fitted and supported in the connection hole 27 formed on the rear end side of the main cylinder 10 constituting the socket 1. 28, a center axis C of a main body 28a which is bent and substantially shaped like a letter, and a rotation axis D of a base 28b.
Intersect, but do not intersect at the intersection position, that is, do not coincide on the same plane, and on a plane orthogonal to the rotation axis D at the intersection position between the center axis C of the main body 28a and the rotation axis D of the base 28b. And the center axis C has a length h with respect to the rotation axis D.
Only the eccentricity, the body 28 of the hose end 28
In the case where a strong tensile load is applied in the direction of the central axis C to a, the load received by the base portion 28b is received at a position shifted from the rotation axis D, that is, at a position eccentric by the length h. The balance is lost and the base 28b rotates,
The rotation of the base 28b buffers the load and reduces the influence of the load on the socket. Thus, even if a strong tensile load is applied to the main body 28a of the hose end 28 in the direction of the central axis C, the hose end 28 of the socket 1
It is possible to prevent the attachment portion and the connection portion between the socket 1 and the plug 2 from being damaged.

[0020]

As described above, according to the pipe joint according to the present invention, the main body and the base are formed of a socket and a plug, which are provided with an appropriate locking mechanism and can be detachably connected, and are bent into a substantially rectangular shape. A pipe joint rotatably attached to the socket so that the base of the hose end can change the direction of the main body, and the hose end is bent and formed to have a substantially letter shape. Although the center axis of the main body and the rotation axis of the base intersect, they are configured so as not to coincide on the same plane.
When a strong tensile load is applied in the direction of the central axis, the balance is lost and the base rotates, and the rotation of the base buffers the load, thereby reducing the influence of the load on the socket. It is possible to prevent damage to the hose end attachment portion, the connection portion between the socket and the plug, and the like.

[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.

2A is a front view showing a socket of the pipe joint of the present example, and FIG. 2B is a left side view.

FIG. 3 is an end view taken along line XX of FIG. 2 (a).

[Explanation of symbols]

 REFERENCE SIGNS LIST 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 main body portion 28b base portion 29 locking member 30 seal ring 31 step Part A Central axis of main cylinder constituting socket B Hole axis of connection hole C Central axis of hose end body part D Rotation axis of hose end base

Claims (1)

[Claims] 1. A hose end comprising a socket and a plug provided with an appropriate locking mechanism and removably connectable, and having a body portion bent and formed in a substantially rectangular shape, the base of the hose end changes the orientation of the body. A pipe joint rotatably attached to the socket so that a center axis of a main body part that is bent and formed to have a substantially rectangular shape and a rotation axis of a base part intersect at the hose end. A pipe joint characterized in that they are not aligned on the same plane.