JPH04331887A - Male and female joint structure constituting fluid pipe joint - Google Patents

Abstract

PURPOSE:To complete the connection only by insertion of a plug and rotation of a body. CONSTITUTION:A joint body 1 is provide therein with a first port groove 11, a circumferential groove 9, and is provided with an O-ring 19, a first circular hole 23 and a screw 15. The screw plug 3 is provided with a coupling pipe 33 and a protruding member 25. At first, the joint plug 3 is inserted into the joint body 1, and the protruding member 35 is introduced into by way of the first port groove 11. Accordingly, a coupling condition is obtained. When the screw 15 is fastened, the joint plug 3 and the joint body 1 are held in connection.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a joint used for connecting fluid piping.

0002

2. Description of the Related Art Conventionally, screw-type fittings have been used as fittings for fluid piping. In the case of this screw-in type, a female joint structure with a tapered female thread is connected to a male joint structure with a tapered male thread, and a packing or sealing tape is used to prevent fluid leakage. Make a stop.

0003

[Problems to be Solved by the Invention] However, the conventional technology uses a water-stopping method using packing or sealing tape, which requires a large number of construction steps and requires skill and experience.

[0004] For example, if the screws are not screwed in properly, water leakage may occur due to insufficient screwing, or problems may occur such as damage due to over tightening and water leakage due to this damage.

The present invention solves the above problems and provides a male/female joint structure for configuring a fluid piping joint that can be connected with a small number of man-hours and does not cause poor connection or damage to the joint. purpose.

[0006] As a means for achieving the above object, a female joint structure constituting a joint for fluid piping according to the first invention has the following features:
The joint for fluid piping is constructed in cooperation with the male joint part, and includes a cylindrical body, a cylindrical fitting hole formed in the axial direction from one end of the body, and a cylindrical fitting hole formed in the axial direction from one end of the body. an annular circumferential groove formed on the inner periphery of the cylindrical fitting hole; a hole opening groove formed in an outer radial direction from the opening of the cylindrical fitting hole and communicating with the circumferential groove; and the main body. The gist includes a screw hole formed in the hole opening groove portion from the outer periphery of the screw hole, and a screw that is engaged with the screw hole.

[0007] Furthermore, the male joint structure constituting the fluid piping joint of the second invention cooperates with the female joint structure of the first invention to constitute the fluid piping joint, and the female joint structure constitutes the fluid piping joint. The gist of the present invention is to include a coupling pipe that is fitted into a cylindrical fitting hole of a shape joint structure, and a protruding member formed on the outer periphery of the coupling pipe.

[0008]

[Operation] In the female joint structure constituting the fluid piping joint of the first invention, the coupling pipe of the male joint structure of the second invention is first inserted into the cylindrical fitting hole. Next, the protrusion member enters the circumferential groove via the hole opening groove. In this state, when the screw is fitted into the screw hole, the hole opening groove is closed by the screw. This prevents the protruding member from coming off through the hole and groove. Therefore, the connected state between the male joint structure and the female joint structure is maintained.

As described above, a fluid piping joint is constructed by inserting the male joint structure of the second invention into the female joint structure of the first invention and screwing together the screws.

0010

[Embodiment] Next, an embodiment of a male/female joint structure constituting a fluid piping joint of the present invention will be described.

FIG. 1 shows a joint body 1 of an embodiment of the first invention.
A partially cutaway perspective view of the joint plug 3 according to an embodiment of the second invention
A perspective view of the figure is shown. 2 is a partial sectional view of the joint body 1 seen from the front, and FIG. 3 is a right side view of the joint body 1. 4 is a partial sectional view of the joint plug 3 seen from the front, and FIG. 5 is a left side view of the joint plug 3. FIG. 6 is a partial cross-sectional view of the joint body and the joint plug 3 in a connected state.

The joint body 1 includes a main body 5, a cylindrical fitting hole 7, a circumferential groove portion 9, a first hole opening groove portion 11, a second hole opening groove portion 12, a screw hole 13, a screw 15, O-ring storage groove 1
7, an O-ring 19, a tapered female thread 21, a first round hole 23, and a second round hole 25.

The main body 5 is a metal member having a hexagonal columnar outer periphery. Here, BC6C is used as the material. The cylindrical fitting hole 7 is formed from one end 5a of the main body 5 to the other end 5b.

The circumferential groove portion 9 is a predetermined distance 9a from the one end portion 5a.
It is formed in the position where it entered. The first hole opening groove portion 11 is formed between the one end portion 5 a and the circumferential groove portion 9 . The second hole opening groove portion 12 is located between the one end portion 5a and the circumferential groove portion 9 and
It is formed axially symmetrically with the hole and groove portion 11 .

The screw hole 13 is formed facing the first hole opening groove 11, and has an opening 13a on the outer periphery of the main body 5. By screwing the screw 15 through the opening 13a, the screw 15 closes the first hole groove portion 11.

The O-ring storage groove 17 is formed on the other end 5b side of the circumferential groove portion 9. The O-ring 19 is placed in the O-ring storage groove 17. The tapered female threaded portion 21 is formed from the other end 5b of the main body 5 to just in front of the O-ring storage groove 17.

The first round hole 23 is a round hole formed from the outer circumference of the main body 5 to the inner circumference side. The first round hole 23 is opened centering on one edge 9b of the circumferential groove portion 9. That is, it is formed at a position closer to the one end portion 5a from the circumferential groove portion 9. The second round hole 25 is formed axially symmetrically with the first round hole 23.

The joint plug 3 includes a main body 31 and a coupling pipe 33.
, the protruding member 35 , the tapered male threaded portion 37 , and the flow path 39
It is equipped with The main body 31 is a metal member having a hexagonal columnar central portion 31c on the outer periphery. Here, BC6C is used as the material.
Use. The flow path 39 is formed along the axis of the main body 31.

The coupling tube 33 is formed from one end portion 31a of the main body 31 to a central portion 31c. The coupling tube 33 has a cylindrical shape and includes an insertion hole 33a for the projection member 35. The protrusion member 35 has a cylindrical shape, and is inserted into the insertion hole 33a and fixed. Two protruding members 35 are provided axially symmetrically on the main body 31.

The tapered male threaded portion 37 is formed from the other end 31b of the main body 31 to the central portion 31c. Next, a procedure for connecting the joint body 1 and the joint plug 3 will be explained. First, one end 31a of the coupling tube 33 is inserted into the one end 5a of the cylindrical fitting hole 7. Next, both protruding members 35 are inserted into the circumferential groove 9 via the first hole and groove 11 and the second hole and groove 12. In this state, the coupling pipe 33 has reached the O-ring 19, and a leak-proof seal is formed between the joint body 1 and the joint plug 3.

Next, the joint plug 3 is rotated to the right or left. As a result, the protrusion member 35 moves away from the first and second hole opening grooves 11 and 12 and enters into the circumferential groove 9. After that, continue rotating while pulling the coupling plug 3 toward you. This rotation causes the protrusion member 35 to connect to the first and second round holes 23 and 25.
It continues until it reaches. When reaching the first and second round holes 23 and 25, the projection member 35 falls into the first and second round holes 23 and 25, and the rotation of the joint plug 3 is stopped. This state is maintained by hydraulic pressure after fluid is introduced inside.

After connecting the joint plug 3 to the joint body 1 as described above, the screw 15 is then fitted into the screw hole 13. Thereby, as shown in FIG. 6, the screw 15 closes the first hole opening groove 11 and prevents the protruding member 35 from coming off from the circumferential groove 9.

According to the procedure explained above, the joint body 1
The connection between the joint plug 3 and the joint plug 3 is executed with a single touch, and the connected state is maintained. The tapered female threaded portion 21 and the tapered male threaded portion 37 are connected to other devices, piping, instruments, and the like. In addition, instead of the tapered female threaded portion 21 and the tapered male threaded portion 37, piping or other connectors may be formed, or the joint body 1 or the joint plug 3 may be directly attached to other devices or appliances. Good too.

[0024] The joint body 1 and the joint plug 3 described above can be sealed to prevent liquid leakage and prevented from rotating simply by combining them and rotating them while pulling them toward each other. Furthermore, simply by engaging the screws 15, the joint plug 3 is prevented from coming off from the joint body 1, and the connected state is maintained.

[0025] As a result, an extremely excellent effect is achieved in that the number of man-hours for connecting piping, appliances, devices, etc. can be reduced. Moreover, when making a connection, a complete connection can be easily made without requiring advanced technology or many years of experience. Further, special tools for tightening and small parts such as packing and tape for sealing are also unnecessary.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in various forms without changing the gist of the present invention.

[0027]

Effects of the Invention The female joint structure constituting the fluid piping joint of the first invention can be connected to the male joint structure of the second invention with a single touch and can maintain the connected state. Further, according to the present invention, the joint can be constructed by simply inserting, rotating, and mating, without requiring advanced skills or extensive experience. Therefore, it is possible to reduce the number of man-hours required for connecting fluid piping, and to eliminate the need for sophisticated construction techniques, which is an extremely excellent effect.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a joint body 1 and a joint plug 3. FIG.

FIG. 2 is a front view of the joint body 1.

FIG. 3 is a right side view of the joint body 1.

FIG. 4 is a front view of the joint plug 3.

FIG. 5 is a left side view of the joint plug 3.

FIG. 6 is an explanatory diagram of the connection state between the joint plug 3 and the joint body 1.

[Explanation of symbols]

1...Joint body 3...Joint plug 5...Main body 7...Cylindrical fitting hole 9...Peripheral groove part 11...First hole groove part 12...Second hole opening groove part 13...screw hole 15... screw 19...O-ring 31...Main body 33...Joining pipe 35...Protrusion member

Claims (2)

[Claims] Claim 1: A joint for fluid piping configured in cooperation with a male joint portion, comprising a cylindrical body and a cylindrical fitting formed in the axial direction from one end of the body. a mating hole, an annular circumferential groove portion formed on the inner periphery of the cylindrical mating hole, and a groove formed in the outer radial direction from the opening of the cylindrical mating hole;
A female type joint for fluid piping comprising a hole opening groove communicating with the circumferential groove, a screw hole formed in the opening groove from the outer periphery of the main body, and a screw engaged with the screw hole. Joint structure. 2. A joint for fluid piping configured in cooperation with the female joint structure according to claim 1, wherein the joint pipe is fitted into a cylindrical fitting hole of the female joint structure. , and a protruding member formed on the outer periphery of the coupling pipe.