JPH0674382A - Piping joint - Google Patents

Abstract

PURPOSE:To provide a piping joint which can fit a plug member in a socket member and remove therefrom by single action and with which the connecting condition can easily be checked externally. CONSTITUTION:A stopper 4 is provided which emerges and retreats at the inner wall 12 of a socket member 1, and connection is generated by detaining this stopper 4 with a groove 22 formed in a plug member 2. At the periphery 13 of the socket 1, a sleeve 5 installed slidably and a stationary ring 6 to restrict sliding of the sleeve 5 are furnished so as to hold the detained state of the stopper 4, and in the connected condition, the sleeve 5 is prevented from misoperation by means of fitting of the stationary ring 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint in which end portions of pipes can be detachably connected with one touch.

It is desirable that the pipe joint allows the socket member and the plug member to be joined with one touch so that the piping work and the maintenance can be performed easily. May disconnect the connection. Therefore, there is a demand for a pipe joint that can prevent erroneous operation and can be reliably connected.

[0003]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a pipe joint has a socket member 10 provided at one end 3 of the pipe to be connected.
And the plug member 20 provided on the other pipe end portion 3 are connected to connect the pipe end portions 3 and 3 to each other. The socket member 10 and the plug member 20 can be attached and detached with one touch. A ball-shaped stopper 40 that can appear and disappear is provided on the inner wall of the member 10.
A groove portion 210 that engages with the stopper 40 is formed in the outer peripheral portion of the plug member 20, and the groove portion 210 is engaged with the stopper 40 by inserting the plug member 20 into the socket member 10.

Further, on the outer periphery of the socket member 10, there is provided a sleeve 50 for restricting the protruding / withdrawing operation of the stopper 40. When connecting the pipe, the sleeve 50 is retracted from above the stopper 40 to make the stopper 40 movable. Allows insertion of the plug 20. After the connection, the sleeve 50 is put on the stopper 40 to hold the stopper 40 in a protruding state to prevent the plug 20 from coming off.

[0005]

However, in the conventional structure, since the socket member 10 and the plug member 20 can be easily separated by operating the sleeve 50, the connection may be disconnected due to an erroneous operation. It was difficult to visually confirm whether or not the sleeve 50 was securely attached.

Therefore, it is an object of the present invention to provide a pipe joint capable of easily confirming the mounting state of the socket member and the plug member from the outside and preventing the disengagement due to an erroneous operation. .

[0007]

SUMMARY OF THE INVENTION The above object is to provide a pipe end 3
In a pipe joint comprising a socket member 1 and a plug member 2 which are attached to each other and can be attached to and detached from each other, a stopper 4 which can be retracted from an inner wall portion 12 is provided at a connecting end portion 11 of the socket member 1, and an outer peripheral portion 13 is provided. Is provided with a sleeve 5 slidable on the outer surface of the stopper 4, and a groove 22 engageable with the stopper 4 is formed in the connection end 21 of the plug member 2, and This is achieved by a pipe joint characterized in that a fixing ring 6 that restricts the sliding of the sleeve 5 and holds the sleeve 5 at the engagement position is detachably provided on the outer periphery of the socket member 1.

[0008]

In other words, according to the present invention, the stopper 4 provided on the inner wall of the socket member so as to be retractable and the groove portion 22 formed in the plug member 2 are engaged only by inserting the plug member 2 into the socket member 1. In this connected state, the sleeve 5 slidably provided on the outer peripheral portion 13 of the socket member 1 is slid above the stopper 4 to maintain the engaged state of the stopper 4 and At the retracted position, attach the fixing ring 6 and sleeve 5.
It is possible to prevent the retreat to the detached position due to an erroneous operation and to make a reliable connection.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 and 2 are views showing an embodiment of the present invention. FIG. 1 shows a separated state and FIG. 2 shows a connected state.

In FIG. 1, 1 is a socket member and 2 is a plug member, which are fixed in advance to the pipe ends 3 and 3 such as hoses to be connected. 6 is a fixing ring, which is detachably provided on the outer periphery of the socket member 1,
It is attached to the socket member 1 in the connected state of the pipe joint.

The socket member 1 has an opening 15 having an inner diameter equal to the outer diameter of the connecting end portion 21 of the plug member 2 formed in the connecting end portion 11 thereof, and the connecting end portion 21 of the plug member 2 is fitted therein. ing. Further, the connection end 11 of the socket member 1 is provided with a ball-shaped stopper 4 capable of projecting and retracting on the inner wall 12 thereof. The stopper 4 is the inner wall 1
The hole 16 is attached to the hole portion 16 penetrating to the hole 2, and the hole portion 16 has a diameter smaller than the diameter of the stopper 4 on the inner wall side to prevent the hole 4 from falling off, and is pressed down by the sleeve 5 on the outer peripheral side.

The sleeve 5 is slidably mounted on the outer periphery of the socket member 1, and at the tip end thereof, a gap 51 is formed between the sleeve 5 and the upper portion of the surface on which the hole 16 in which the stopper 4 is mounted is formed. Is formed so that the stopper 4 is submerged in the gap 51. Then, when the sleeve 5 is moved toward the tip of the socket member 1, the sliding contact portion 52 closes the hole portion 16 beyond the gap portion 51 and the stopper 4 is projected to the inner wall portion 12 of the socket member 1. It is supposed to be retained.

Further, the sliding surface 17 of the sleeve 5 is formed in a concave shape on the outer periphery of the socket member 1 and has a step portion 18 facing the end surface 53 of the sleeve 5, and the sleeve 5 is located at the front end of the socket member 1. In the moving state, the fixing ring 6 is mounted between the end surface 53 of the sleeve 5 and the stepped portion 18 of the socket member 1, so that the movement of the sleeve 5 is regulated and the protruding state of the stopper 4 is maintained. Has become.

As shown in FIG. 3, the fixing ring 6 is formed in a substantially annular shape having a slit 61 and is made of an elastic material such as a resin. The fixing ring 6 is expanded with the step portion 18 of the socket member 1 while expanding the slit 61. It is mounted between the end surface 53 of the sleeve 5. The end surface 62 of the fixing ring 6 is the sleeve 5
Has an appropriate thickness so as to surely contact the end face 52 of the. Further, by coloring the outer appearance of the fixing ring 6 in a color different from that of the socket member 1 and the plug member 2, it is possible to easily confirm the mounting state from the outside at a glance.

Plug member 2 joined to socket member 1
Has a groove 22 on the outer periphery of the connection end 21 fitted into the opening 15 of the socket member 1, and the stopper 4 engages with the groove 22 when fitted into the socket member 1. A front edge portion 23 forming the groove portion 22 is formed in an inclined surface shape having a mountain-shaped cross section so that the spherical surface of the stopper 4 is guided.

The tip surface 24 of the plug member 2 is positionally regulated by the stopper 4 at a position where it is joined to the packing material 7 made of an O-ring or the like provided in the socket member 1 in a pressure contact state, and is connected. It is designed to maintain the airtightness of the part.

[0017]

As described above, according to the pipe joint of the present invention, it is possible to easily connect the socket member only by inserting the plug member into the socket member and to mount the fixing ring on the outer periphery of the socket member. The simple structure only prevents the plug member from coming off due to an erroneous operation.Furthermore, by checking the presence or absence of the fixing ring, it is possible to check the mounting state from the outside of the pipe joint at a glance. is there.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a separated state according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a joined state of the embodiment of the present invention.

FIG. 3 is a perspective view showing a fixing ring.

FIG. 4 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket member 11 Connection end part 12 Inner wall part 13 Outer peripheral part 2 Plug member 21 Connection end part 22 Groove part 3 Pipe end part 4 Stopper 5 Sleeve 6 Fixing ring

Claims (1)

[Claims] 1. A pipe joint comprising a socket member (1) and a plug member (2), which are attached to a pipe end (3) and are detachable from each other, in a connecting end (1) of the socket member (1).
The stopper (4) is provided on the inner wall (12) at 1) and the sleeve (5) slidable on the outer surface of the stopper (4) at the outer periphery (13). At the connecting end (21) of the plug member (2), the stopper
A fixing ring (6) which has a groove (22) engageable with (4), and which regulates the sliding of the sleeve (5) at the outer periphery of the socket member (1) and holds the sleeve (5) at the engagement position. A pipe joint characterized in that it is detachably provided.