JP3057606U - Piping fittings - Google Patents

Abstract

(57) [Problem] To be used for connecting a water faucet to a pipe end with a female thread through a through hole in a wall, and to connect a copper pipe end so as not to cause water leakage. Provide a plumbing fitting. At one end of a cylindrical joint body, a rotating tool engagement serration is formed on the inner periphery and a tubular male screw portion is provided in a coaxial extension, and a tubular male screw portion is provided.
4, a cylindrical surface 7 for inserting a pipe having a diameter larger than the diameter of the serration 6 is formed at the inner peripheral end portion. The small-diameter portion 10 of the cylindrical adapter 9 consisting of the small-diameter portion 10 and the large-diameter portion 11 is inserted into the pipe insertion cylindrical surface 7, and the large-diameter portion 11 of the adapter 9 is inserted.
Then, the end of the copper tube 8 is inserted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pipe joint used for connecting, for example, a water faucet (including a hot and cold water mixing faucet) to a pipe end through a through hole in a wall.

[0002]

[Prior art]

 Conventionally, a pipe joint used to connect a water faucet to a pipe end through a through hole in a wall includes a cylindrical joint body, a tubular male screw portion provided at one end of the joint body, and a joint body. A female thread provided on the other end side, and a serration for engaging a rotating tool such as a wrench is formed on the inner periphery of the tubular male thread when the joint is tightened to a pipe end having the female thread. Are known.

[0003]

[Problems to be solved by the invention]

 In this type of pipe joint, it may be necessary to insert and connect a copper pipe end to the inner periphery of the tubular external thread, but in the above-mentioned conventional pipe joint, a selection is formed on the inner periphery of the tubular external thread. Therefore, there was a problem that a copper pipe could not be connected so that water leakage did not occur.

[0004] The purpose of this invention is to be able to use when connecting a faucet to a pipe end with a female thread through a through hole in the wall, and also to connect the end of a copper pipe so that water leakage does not occur. It is an object of the present invention to provide a simple piping joint.

[0005]

[Means for Solving the Problems]

 The pipe joint according to the present invention has a serration (6) for rotating tool engagement formed on the inner periphery at one end of the cylindrical joint body (2) and a tubular male thread (4) extending coaxially. A cylindrical surface (7) for inserting a pipe having a diameter larger than the diameter of the serration (6) is formed at the inner peripheral tip of the tubular male screw part (4).

A small-diameter portion (10) of a cylindrical adapter (9) composed of a small-diameter portion (10) and a large-diameter portion (11) is inserted into and joined to the pipe insertion cylindrical surface (7). In some cases, the end of the copper tube (8) is inserted into the large diameter portion (11) of (9) and joined.

According to the piping joint of the present invention, to connect the copper pipe (8) to the copper pipe (8), a large-diameter portion (11) of the adapter (9) is brazed to the end of the copper pipe (8), and the adapter is connected. The pipe insertion cylindrical surface (7) of the fitting body (2) may be brazed to the small diameter portion (10) of (9), and the flange body (3) may be screwed to the wall. If a female thread is provided, a rotating tool such as a spanner is engaged with the serration (6) of the joint body (2) and rotated, whereby the female thread at the pipe end is formed. After screwing the male external thread (4) of the joint body (2), the flange body (3) may be screwed to the wall.

[0008]

[Embodiment of the invention]

 An embodiment of the present invention will be described below with reference to the drawings. In the following description, the left side of the figure is referred to as front, and the right side is referred to as rear.

A pipe joint (1) shown in FIGS. 1 to 3 is used for connecting a pipe end and a water faucet through a through-hole in a wall, and is used for a cylindrical joint body. It consists of (2) and a disc-like flange body (3) fitted to it, and the end of the copper tube (8) can be connected to its rear end via an adapter (9).

[0010] At the outer periphery of the rear end (end on the pipe side) of the joint body (2), there is provided a tubular external thread portion (4) for pipe connection, and on the inner periphery of the front end (end on the plug side). Further, a female screw portion (5) for connecting a faucet is provided. The outer diameter of the male thread (4) is equal to the inner diameter of the female thread (5).

A wrench for screwing the joint body (2) into the female thread at the pipe end is fitted around the inner circumference from the front end of the tubular male thread (4) to the rear end of the joint body (2). A serrated (6) having a regular dodecagonal cross section is formed. A cylindrical surface (7) for pipe insertion having a diameter larger than the diameter of the serration (6) is formed on the inner periphery of the rear part of the tubular male screw part (4). The cross section of the serration (6) is not limited to a regular dodecagon.

The adapter (9) has a cylindrical shape, and has a small-diameter portion (10) inserted into a pipe insertion cylindrical surface (7) of the joint body (2) and brazed, and an end portion of a copper pipe (8). And a large-diameter portion (11) to be brazed by being inserted. The outside diameter of the small diameter portion (10) of the adapter (9) is 14.0 mm, and the diameter of the pipe insertion cylindrical surface (7) is correspondingly 14.0 mm. The diameter of the copper tube (8) is 15.88 mm, and the inside diameter of the large-diameter portion (11) of the adapter (9) corresponds to this. The outer diameter of the male screw part (4) is 21.0 mm. Since the diameter of the serration (6) is smaller than the cylindrical surface for pipe insertion (7), the rear end face of the serration (6) is connected to the small-diameter part (10) of the adapter (9) by the cylinder for pipe insertion of the joint body (2). It is a stopper when it is inserted into the surface (7).

The flange body (3) is separate from the joint body (2), and has a through hole (12) at a central portion and a plurality of screw through holes (13) at a peripheral portion, respectively. The through hole (12) is fitted around the outer periphery of the front end of the joint body (2). Fitting projections (14) are provided at 180 ° intervals on the outer periphery of the front end of the joint body (2), and are fitted on the inner periphery of the flange body (3) to rotate with each other. There is provided a fitting recess (15) for preventing the fitting.

The pipe joint (1) with the flange body (3) is used when the wall is made of, for example, gypsum board and there is a gap between a pipe end and a hole formed in the wall. Then, in order to connect the pipe end with a copper pipe (8), braze the large-diameter part (11) of the adapter (9) to the end of the copper pipe (8), and connect the small-diameter of the adapter (9). Braze the pipe insertion cylindrical surface (7) of the joint body (2) to the part (10) and screw the flange body (3) to the wall. If a female thread is provided at the pipe end, a turning tool such as a wrench is engaged with the serration (6) of the joint body (2) to turn it, thereby turning the pipe end. Screw the tubular male screw part (4) of the joint body (2) into the female screw part of the part, and screw the flange body (3) to the wall. When the wall is made of concrete and the pipe end is fixed to the wall, the flange body (3) is not required, and only the cylindrical joint body is used.

In the pipe joint (1), a female thread (5) is provided at the front end of the joint body (2). However, depending on the application, the female thread (5) may be used instead. A male thread may be provided.

[0016]

[Effect of the invention]

 According to the piping joint of the present invention, not only the connection when the female end is provided at the pipe end, but also the connection of the copper pipe end so as not to cause water leakage can be achieved. To increase.

The small-diameter portion of the cylindrical adapter consisting of the small-diameter portion and the large-diameter portion is inserted and joined to the pipe insertion cylindrical surface, and the copper tube end is inserted and joined to the large-diameter portion of the adapter. In this case, it is not necessary to increase the diameter of the pipe insertion cylindrical surface until it becomes equal to the outer diameter of the copper tube, so that the copper tube can be connected without reducing the strength of the tubular male thread. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a piping joint according to the present invention and a copper pipe connected thereto.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a side view in which a part of a pipe joint is cut away.

[Explanation of symbols]

 (1) Piping fitting (2) Cylindrical fitting body (3) Flange (4) Tubular male thread (5) Female thread (6) Serration (7) Pipe insertion cylindrical surface (8) Copper pipe (9 ) Cylindrical adapter (10) Small diameter part (11) Large diameter part

Claims (2)

[Utility model registration claims] At one end of a cylindrical joint body (2), a serration (6) for rotating tool engagement is formed on the inner periphery and a tubular male screw part (4) is provided coaxially extending. A pipe joint in which a cylindrical surface (7) for inserting a pipe having a diameter larger than the diameter of the serration (6) is formed at the inner peripheral end of the tubular male screw part (4). 2. A small-diameter portion (10) is provided on a cylindrical surface (7) for inserting a pipe.
The small-diameter part (10) of the cylindrical adapter (9) consisting of the large-diameter part (11) is inserted and joined.The large-diameter part (11) of the adapter (9) is connected to the end of the copper tube (8). The pipe joint according to claim 1, wherein the pipe joint is inserted and connected.