JPH04224392A - Male and female type joint structure constituting fluid piping joint - Google Patents

Abstract

PURPOSE:To conduct fluid piping connection only by inserting and screwing. CONSTITUTION:A cap 9 equipped with an O ring 17, a ring 7 and a screw 25 is provided at a joint body 1. A joining pipe 10 and a round hole portion 3c are provided at a joint plug 3. When the plug 3 is inserted into the body 1 and the screw 25 is driven, both are fixed. Also, sealing is performed by means of the O ring 17.

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,
For example, connections between various equipment around water sources and accessory hardware, or connections between accessory hardware and fluid piping are made by combining accessory adapters, sockets, and the like. In addition, methods using packing or sealing tape are used to stop water from connecting parts.

0003

[Problem to be Solved by the Invention] However, the conventional technology requires construction by combining a large number of accessory adapters and sockets on site, and uses a water-stopping method using packing and sealing tape, which makes construction difficult. It required a lot of man-hours and required skill and experience.

For example, when connecting a flush valve, angle valve, etc. to a pipe buried in a wall or the like, advanced technology and extensive experience are required to match the finished dimensions. In other words, to connect the buried piping and the flush valve and angle valve, extruded sockets are used due to the finished dimensions. In this construction method using an extruded socket, if the extruded socket is improperly screwed in, water leakage may occur due to insufficient screwing in, or damage to the extruded socket due to over-tightening, and water leakage due to this damage. As a result, problems occurred, such as water leakage after construction, which required the finished walls to be demolished and repaired.

[0005] 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]

[Means for Solving the Problems] As a means for achieving the above object, a female joint structure constituting a fluid piping joint according to the first invention cooperates with a male joint portion to connect a fluid piping. The joint comprises a cylindrical main body, a cylindrical first chamber formed in the axial direction from one end of the main body, and a cylindrical first chamber formed in the axial direction from the back wall of the first chamber. a cylindrical second chamber with a smaller diameter than the first chamber, formed in the inner wall of the first chamber, and a circumferential groove surrounding the second chamber; A seal portion formed on a peripheral portion, having an inner diameter substantially the same as an inner diameter of the second chamber, and having an outer diameter substantially the same as an outer diameter of the circumferential groove, and disposed in the first chamber. A plate-like ring member screwed into the first chamber and a lid member having an opening formed in the center are screwed together so as to be movable in the axial direction of the lid member. The gist is to include a screw-like operating member that can press a part of the outer periphery in the direction of the circumferential groove.

[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 cylindrical The gist of the present invention is to include a coupling tube having a shape, a flange-like member formed on the outer periphery of the coupling tube, and a seal portion formed on the outer periphery of the coupling tube.

[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 sequentially opens the opening of the lid member, the first chamber, the ring member, the second chamber, It is moved into the main body via the seal part. At this point, fluid leakage between the coupling tube and the second chamber is provided by both mills.

[0009] Next, when the screw-like operating member is screwed together, a part of the outer periphery of the ring member is pressed in the direction of the circumferential groove. Thereby, the ring member is reduced in cross section. As a result, a force is generated between the ring member and the coupling tube to prevent mutual displacement.

As described above, by inserting the male joint structure of the second invention into the female joint structure of the first invention and screwing together the screw-like operating member, a joint for fluid piping is constructed. .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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.
FIG. 2 is a perspective view of a joint plug 3 according to an embodiment of the second invention. The joint body 1 shown in FIG.
, a ring 7 as a plate-shaped ring member, and a cap 9 as a lid member. Fitting plug 3 shown in Figure 2
is equipped with a coupling tube 10.

3 is a sectional view taken along the line AA of the main body 5, FIG. 4 is a front view of the cap 9 viewed from the direction of arrow YA, FIG. 5 is a partial sectional view of the cap 9, and FIG. 6 is a sectional view of the joint plug 3 taken from the direction of arrow YB. 7 is a partial sectional view of the joint plug 3, FIG. 8
is an explanatory view of a state in which the joint body 1 and the joint plug 3 are combined.

The main body 5 shown in FIGS. 1 and 3 includes a first joint portion 1A and a second joint portion 1B. First joint part 1
A and the second joint portion 1B are configured symmetrically with respect to the center of the main body 5. Therefore, the first joint part 1A and the second joint part 1A
Since the structure is almost the same as the joint part 1B, only the structure of the first joint part 1A will be described in detail here.

The first joint portion 1A includes a coupling port 11, a coupling hole 13 serving as a cylindrical second chamber, an O-ring insertion groove 15,
It includes an O-ring 17 as a sealing member, a circumferential groove 19, a cylindrical first chamber 21, and a cap screw portion 23. The joint port 11 is a round hole with a predetermined diameter, and the joint plug 3
This is the part into which the coupling tube 10 is inserted. The coupling hole 13 is
It is formed continuously with the coupling port 11. The O-ring insertion groove 15 is formed in the inner peripheral portion 13a of the coupling hole 13. The O-ring 17 is inserted into the O-ring insertion groove 15. The circumferential groove 19 is a ring-shaped groove that is spaced apart from the coupling port 11 by a predetermined distance in the outer diameter direction and extends from the coupling port 11 to the coupling hole 13.
It is formed in the direction of arrow YA toward .

As shown in FIG. 1, the ring 7 has an inner peripheral portion 7.
It is a ring-shaped member in which a is approximately the same as the inner diameter of the coupling hole 13, and an outer peripheral portion 7b is approximately the same as the diameter of the circumferential groove 19. The cap screw portion 23 is formed continuously on the outer inner circumferential portion 19a of the circumferential groove 19.

As shown in FIGS. 1, 4, and 5, the cap 9 includes a threaded portion 9A, a nut portion 9B, and an insertion hole 9.
C, a screw insertion screw portion 9D, and a screw 25 as a screw-like operating member. The threaded portion 9A is a male thread corresponding to the cap threaded portion 23. The nut portion 9B is formed continuously from the threaded portion 9A. The insertion hole 9C is
This hole has approximately the same diameter as the inner diameter of the coupling hole 13. The insertion hole 9C and the coupling hole 13 have the same center of passage. The screw insertion screw portion 9D is connected to the screw portion 9A and the nut portion 9.
This is a female screw-shaped portion formed across B. In the screw insertion screw portion 9D, the top portion 25a of the screw 25 is inserted into the circumferential groove 19.
It is formed in a position opposite to. Screw 25 is indicated by arrow Y
When turned in the C direction, it moves in the arrow YA direction.

As shown in FIG. 1, the above-mentioned main body 5, ring 7, and cap 9 are constructed by first inserting the ring 7 into the vicinity of the circumferential groove 19 of the main body 5, and then inserting the cap 9 into the main body 5.
It can be assembled by screwing into. When assembled in this manner, a cylindrical first chamber 21 is formed between the main body 5 and the cap 9. The cylindrical first chamber 21 holds the ring 7 in place within the body 5.

As shown in FIGS. 2, 6 and 7, the joint plug 3 includes a coupling pipe 10, a nut portion 3A, and a threaded portion 3.
B and a round hole portion 3C. The coupling tube 10 has an outer diameter slightly smaller than the coupling hole 13. The coupling pipe 10 is
It includes a fluid communication port 10A and a fluid passage 10B. The outer diameter portion 10C of the coupling tube 10 has a smooth surface.
A seal portion is formed on the outer periphery. The outer diameter portion 10C is O
It contacts the ring 17 to prevent leakage of fluid flowing into the fluid passage 10B.

[0020] The nut portion 3A is formed in the shape of a brim with respect to the coupling tube 10. The round hole portion 3C is formed in the nut portion 3A. The round hole portion 3C is formed at a position into which the screw 25 can be inserted when the joint plug 3 and the joint body 1 are coupled.

[0021] The threaded portion 3B is a male threaded portion in which a fluid passage 10B is formed. The threaded portion 3B is used to connect the joint plug 3 to a fluid pipe (not shown). The joint plug 3 is inserted into the joint body 1 and connected as shown in FIG. FIG. 8 shows a state in which the screw 25 is inserted into the round hole 3C. In this state, when the screw 25 is turned and moved in the direction of arrow YE, the end 7C of the ring 7 is pushed into the circumferential groove 19. As a result, the ring 7 is reduced in cross-section with respect to the coupling tube 10, and is in the state shown in FIG. That is, the coupling pipe 10 and the ring 7 are in a hollowed state, and the movement of the coupling plug 3 and the coupling body 1 in the insertion direction is fixed by the ring 7.

Further, the joint plug 3 and the joint body 1 are fixed against movement in the rotational direction by the screw 25 and the round hole 3C. Moreover, the coupling plug 3 and the coupling body 1 are
By the O-ring 17 and the outer diameter portion 10C of the coupling tube 10,
Fluid leaks are blocked.

The joint body 1 and the joint plug 3 described above can be sealed to prevent liquid leakage and fixed to each other by simply connecting them and turning the screw 25. As a result, an extremely excellent effect is achieved in that the number of man-hours required for connecting piping, accessories, etc. can be reduced.

[0024] Moreover, when connecting, advanced technology and
Complete connections can be easily made without requiring many years of experience. Further, special tools for tightening and small parts such as packing and tape for sealing are not required.

Next, a modification will be explained. FIG. 9 is an explanatory diagram of a modification. FIG. 9 shows a joint body 103 buried in a wall surface 101 and a faucet integrated joint plug 105. The joint body 103 is connected to a pipe (not shown) within the wall surface 101. The joint body 103 is substantially the same as the joint body 1 of the embodiment, but has a structure in which the O-ring 17 is not provided. Note that instead of the O-ring, a seal portion with a smooth surface is formed on the inner peripheral portion 13a of the coupling hole 13.

[0026] The faucet integrated joint plug 105 is connected to the faucet part 1.
05A and a joint plug portion 105B. The joint plug part 105B connects the coupling pipe 107 and the O-ring 1.
09, a flange portion 111, and a round hole portion 113.

The integrated faucet joint plug 105 is inserted into the joint body 103 and the connection is completed by turning the screw 115. FIG. 10 is an explanatory diagram of a joint body 121 of a modified example. The joint body 121 includes a large number of screw insertion screw parts 123. This facilitates alignment of the fitting plug.

FIG. 11 is an explanatory diagram of a modified example. FIG. 11 shows a wall plate 131, an elbow-type joint body 133, and a faucet-integrated joint plug 135. The elbow joint body 133 has one end connected to the pipe 137 and the other end attached to the wall plate 131. The elbow joint body 133 is connected to the cap 14 via a washer 139.
1 to the wall plate 131.

The faucet integrated joint plug 135 includes a flange portion 143. The flange portion 143 is formed into a dish shape, as shown in FIG. As a result, the flange portion 143 is connected to the cap 14 exposed on the wall plate 131.
Cover 1.

The present invention is not limited to the above-described embodiments and modifications, but can be implemented in various forms without departing from the gist of the present invention. For example, when the joint plug 3 is not rotated by an external force, for example, when used in a two-valve hot water mixer faucet, there is no need to prevent the joint plug 3 from rotating using the screw 25. In addition, instead of faucets attached to the wall, flush valves for toilet bowls, urine flush valves for urinals, helube pipes, angle valves for washbasins, showers for bathtubs, faucets, hot water faucets, mixing faucets, It can also be used as a kitchen faucet or a basin utensil trap. Moreover, it is not limited to use in water places, but can be used as a joint for various fluids.

[0031]

The female joint structure constituting the fluid piping joint of the first invention can be connected to, fixed to, and sealed against liquid leakage with the male joint structure of the second invention. Further, according to the present invention, the joint can be constructed by simply inserting and screwing together, 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 the drawing]

FIG. 1 is an exploded perspective view of a joint body 1. FIG.

FIG. 2 is a perspective view of the joint plug.

FIG. 3 is a sectional view taken along the line AA of the main body 5. FIG.

FIG. 4 is a front view of the cap 9.

5 is a sectional view of the cap 9. FIG.

FIG. 6 is a front view of the joint plug 3.

FIG. 7 is a sectional view of the joint plug 3.

FIG. 8 is an explanatory diagram of an example.

FIG. 9 is an explanatory diagram of a modified example.

FIG. 10 is an explanatory diagram of a modified example.

FIG. 11 is an explanatory diagram of a modified example.

[Explanation of symbols]

1...Joint body 3...Joint plug 5...Main body 7...Ring 9...Cap 11...Joining port 13...Binding hole 15...O-ring insertion groove 17...O-ring 19...Peripheral groove 21...Cylindrical first chamber 25... screw

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 joint formed in the axial direction from one end of the body. a cylindrical second chamber formed in the axial direction of the main body from the back wall of the first chamber and having a smaller diameter than the first chamber, and a second chamber formed in the back wall of the first chamber; a circumferential groove surrounding the second chamber; a seal portion formed on the inner circumference of the second chamber; and an inner diameter substantially the same as the inner diameter of the second chamber, and an outer diameter of the circumferential groove. a plate-shaped ring member disposed in the first chamber and having approximately the same outer diameter as the first chamber; a lid member screwed into the first chamber and having an opening formed in the center; and a shaft of the lid member. A female joint structure constituting a joint for a fluid pipe, comprising a screw-like operating member that is screwed together so as to be movable in the direction of the ring member and that can press a part of the outer periphery of the ring member in the direction of the circumferential groove. . 2. A joint for fluid piping in cooperation with the female joint structure according to claim 1, comprising a cylindrical joint pipe and a flange formed on the outer periphery of the joint pipe. A male joint structure constituting a fluid piping joint comprising a shaped member and a seal portion formed on the outer periphery of the coupling pipe.