JPH0110555Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a pipe joint that can be remotely operated.

[The problem that the idea attempts to solve]

Specifically, it is an object of the present invention to provide a pipe joint that is highly reliable, compact, simple and economical to manufacture and handle, and that can be operated remotely.

[Means to solve the problem]

That is, the pipe joint of the present invention is a pipe joint consisting of a male end made of a right-angled connector and a cylindrical socket-shaped female end that receives the male end. A rotary stud is rotatably erected along the axis of the rotary stud, and a cylindrical locking nut is rotatably screwed into the rotary stud in its central shaft hole. The male end body has a locking lug extending outwardly on both sides in the radial direction, and the male end body further has a sealing member at the lower end that joins the tube in the female end body, and the female end body has the locking lug on its socket-shaped cylindrical wall. and a seal seat corresponding to the sealing member at the tube end in the female end body that is joined to the tube end of the male end body;
A pipe joint characterized in that the locking lug of the locking nut is engaged and fixed in the locking hole by rotation of the rotary stud bolt, and further rotation is continued to press the sealing member against the sealing seat to perform sealing. It is.

In the above-mentioned pipe joint of the present invention, when the rotating stud is rotated with the locking nut not rotating, the locking nut is inserted into the rotating stud at its central shaft hole and is screwed into the rotating stud for free rotation. It moves up and down with respect to the rotating stud along its screw axis. When the locking nut is allowed to rotate freely, the rotating stud and the locking nut rotate at the same time. In addition, if the vertical movement of the locking nut is stopped in this state, the rotating stud will move vertically due to the rotation of the rotating stud.
As a result, the entire male end body moves up and down. The transmission of such motion is easily controlled by the engagement between the locking ears provided on the locking nut, the female end body, and the locking holes provided in the cylindrical socket-shaped tube wall.

The locking hole has a first hole running parallel to the tube axis from its open end.
a second part running to the left or right orthogonally to the first part;
It is formed into a U-shape consisting of a first part and a third part facing in an opposite direction substantially parallel to the first part. Since rotation of the locking nut is stopped when the locking ear is engaged with the first portion, rotation of the rotary stud is transferred to an up-and-down movement of the locking nut or male end. when engaged with the second part;
As the rotary stud rotates, the locking nut and locking lug similarly rotate. When engaged with the third portion, the same action as when engaged with the first portion occurs. However, when the locking lug is engaged with the closed end of the third portion, if the rotary stud is further rotated clockwise, the locking lug is prevented from rotating or moving upward. A force is exerted to move the male end body downward, pressing the sealing member against the sealing seat to achieve a seal.

〔Example〕

The present invention will now be described by way of specific examples and with reference to the drawings.

In FIG. 1, the horizontally arranged tube 1 has a male end 3 made of a right-angled connector of the present invention at its end, and the other vertically arranged tube 2 has a female end 4 at its end. The female and male ends are connected at right angles by the pipe joint of the present invention.

When the pipe joint is installed in the closed state, the male end 3 attached to the pipe end of the horizontal pipe 1 is inserted into the cutout 12 of the female end 4 in the form of a cylindrical socket.

The combination of the horizontal pipe, the vertical pipe, and the male and female ends of the pipe joint of the present invention may be replaced by a combination of the horizontal pipe with the female end and the vertical pipe with the male end, instead of the above case shown in Figure 1. . The assembly in both cases is shown in FIG. 2, where A shows the state before the male and female ends are engaged, and B shows the engaged state.

FIG. 4 shows a longitudinal cross-sectional view of the male end 3 and the female end 4 in an engaged state. As shown in the figure, the male end 3 consisting of a right-angled connector is connected at right angles to the horizontal pipe 1, and its upper end A rotary stud 5 having a head 14 is rotatably erected on the outer surface along an axis coinciding with the axis of the female end body 4 . In Figure 4, bolt 5
has a thread 18, the tip of which is implanted into a receiving hole 20 provided on the outer surface of the male end body 3 , and is locked by a pin 16. A center shaft hole of a cylindrical locking nut 11 is inserted through the rotary stud 5, and is rotatably screwed into a thread 18 of the bolt.

A cylindrical locking nut 11 is inserted into and screwed into a rotary stud 5 rotatably provided on the outer surface of the upper end of the male end body 3. Locking ears 6 arranged so as to extend outwardly in the radial direction are attached to the female end. It engages with a locking hole 8 provided in the socket-shaped cylindrical wall of the body to tightly connect the male and female ends. There are various shapes of the locking hole 8 , but for example, as shown in FIG. It is a U-shaped elongated hole consisting of a second part 9 running to the left (or running to the right) perpendicular to the first part, and a third part 13 running in the opposite direction almost parallel to the first part. is preferred. As shown, the other end of the third portion 13 is closed.

The male and female ends are connected by the engagement between the locking ear and the locking hole as described above, and the product of the present invention completely prevents fluid leakage and is also equipped with a seal that can be easily replaced.

A specific example shown in FIG. 4 is a preferable configuration of the sealing member included in the product of the present invention.

In the figure, numeral 7 denotes a short seal cylindrical tube that functions as a seal component holder, and this cylindrical tube 7 has a flange 19 extending toward the center approximately at the center of the inner wall of the tube. The inner diameter of the center hole of this guard 19 is O
It almost matches the diameter of ring 15. The inner end of the collar 19 is cut diagonally so that the lower part is longer and the upper part is shorter as shown in the figure, and the O-ring 15 is selected to have a diameter that allows it to be placed on this slope. The compressed diameter of the O-ring is set to be larger than the wall thickness of the collar. The inner surface of the seal cylinder tube 7 above the collar 19 is threaded, and is screwed into the lower end of the male end body 3 of the present invention.
In use, the O-ring 15 is placed at the above location, and the seal tube 7 is screwed onto the lower end of the male end body 3 .

Next, when both ends of the male and female ends are joined and tightly engaged as shown in Fig. 4, the O-ring 15 installed on the male end comes into close contact with the seal seat of the female end, and the seal is closed. achieved. That is, the engagement of the pipe joint and the sealed state of the seal member can be achieved simultaneously.

[Effect]

The pipe joint of the present invention is connected as follows.

Referring to FIGS. 1 and 4, first, the male end 3 is inserted into the female end 4 . At this time, the locking lug 6 is in the first portion 10 of the locking hole 8.
Next, when the rotary stud 5 is turned counterclockwise, the locking lug 6 along with the locking nut 11 descends along the first portion 10 and moves to the position of the second portion 9. In this state, if you turn the rotating stud 5 clockwise,
Since the locking nut 11 is free to rotate,
The locking lug 6 automatically rotates about 90 degrees along the second part 9 from the entrance of the second part and is stopped by the wall 13 of the third part. When the rotary stud 5 is further turned clockwise, the locking ear 6 rises along the third part 13 together with the locking nut 11, and eventually reaches the closed upper end of the third part 13. When the rotary stud 5 is further turned clockwise, the tube end seal member of the male end body 3 is pressed downward according to the torque, and sealing with the seal seat of the female end body 4 by the O ring 15 is achieved. .

The male end body 3 is released as follows.

First, the rotary stud 5 connected to the male end 3 is turned counterclockwise. The operations occur in the reverse order of the above. That is, the locking lug 6 is lowered along the third portion 13 of the locking hole 8 until there is no resistance. Furthermore, the locking lug 6 is turned 90 degrees counterclockwise along the second portion 9 to open it.

Continued turning of the rotary stud 5 forces the locking ear 6 against the bottom of the first part 10 of the locking hole 8 , lifts the male end 3 upwards and releases the seal. Next, the locking lug 6 is released from the locking hole 8 to be in an open state.

The seal is disassembled when the seal holder 7 is removed.

To newly seal the seal, it is only necessary to insert the sealing tool, that is, the O-ring 15 into the seal holder 7 so that the seal does not fall off, so it can be easily carried out.

The pipe joint of the present invention is now ready for reuse.

[Effect of idea]

The pipe joint of the present invention has a small number of moving parts, has a built-in seal replacement mechanism, and can be mass-produced at a low cost by hardening, casting, etc.

Elastomeric or metal seals, such as O-rings, can also be incorporated by simple design changes to the seal retainer.

The product of this invention is used as a pipe joint for gas or liquid pipes, and can be manufactured to any desired size. The locking mechanism can also be applied to sustain electricity. Other fields that require remote control, such as radioactive material caves, reactors, etc.
It can also be applied to other devices.

For assembling and disassembling the product of this invention, a hanging tool and a hitting tool as shown in Fig. 3 are used. Hanging tools are used depending on the size of the pipe fitting and pipe. Pipe joint 3 of the present invention,
4, it is possible to easily connect two pipes that intersect at right angles using a robot or the like even in an unmanned room as shown in FIG.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, and Fig. 2A and Fig. 2B show a perspective view of the male end body and the female end body in a mutually separated state, and an assembly of the embodiment product. FIG. 3 is a schematic front view showing the assembled example product installed in the application area, and FIG. The figure is a longitudinal sectional view showing the assembled state of the example product. 1, 2...tube, 3 ...male end body, 4 ...female end body,
5... Rotating stud bolt, 6... Locking ear, 7... Seal holder, 8 ... Locking hole, 9, 10, 13...
Locking hole part, 11... Locking nut, 12... Female end body notch part, 14... Bolt head, 15... O
Ring, 16...pin, 18...bolt thread,
19... Seal holder flange, 20... Bolt receiving hole.

Claims (1)

[Claims for Utility Model Registration] 1. A pipe joint consisting of a male end made of a right-angled connector and a cylindrical socket-shaped female end that receives the male end, the male end having a shaft and a shaft of the female end at the upper end of the male end. A rotary stud is rotatably erected along the corresponding axis, and a cylindrical locking nut is rotatably screwed into the rotary stud in its central shaft hole. has locking ears extending radially outward on both sides, the male end body further has a sealing member at its lower end that joins the tube in the female end body, and the female end body has locking ears on its socket-shaped cylindrical wall. having two mutually symmetrical locking holes for receiving the ears, and having a sealing seat corresponding to the sealing member at the tube end in the female end body that joins with the tube end of the male end body, and by rotation of the rotary stud bolt. A pipe joint characterized in that a locking lug of a locking nut is engaged and fixed in a locking hole, and as the locking nut continues to rotate, a sealing member is pressed against a sealing seat to perform sealing. 2. The locking hole has a first portion running parallel to the tube axis from the open end, a second portion running to the left or right orthogonal to the first portion, and a third portion running in the opposite direction approximately parallel to the first portion. The pipe joint according to claim 1, which is a utility model, and is formed into a U-shape consisting of three parts.