JPH0645189U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Structure] The outer pipe 2 including a curved pipe portion 22 bent with a constant curvature and a pipe connecting portion 21 provided at one end of the curved pipe portion 22, and the curved pipe portion 22. The inner pipe 1 is composed of a curved pipe portion 12 which is bent with the same curvature and a pipe connecting portion 11 which is provided at one end of the curved pipe portion 12, and is formed inside the curved pipe portion 22 of the outer pipe 2. A pipe joint A in which a curved pipe portion 12 of a pipe 1 is inserted and a sealing material 3 is provided between them. [Effect] The curved pipe portion 1 of the inner pipe 1 is inserted into the curved pipe portion 22 of the outer pipe 2.
By changing the depth at which 2 is inserted, the angle between the direction of the pipe connecting portion 21 of the outer pipe 2 and the direction of the pipe connecting portion 11 of the inner pipe 1 can be changed. Therefore, even if the bending angle of the pipe body changes in the pipe, it can be easily applied by changing the angles of the pipe connecting portions 11 and 21 of the pipe joint A. Therefore, one pipe joint can connect the pipes bent at various angles, which is convenient.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint. In particular, the present invention relates to a pipe joint suitable for drainage facility piping.

[0002]

[Prior art]

 Conventionally, drainage pipes for sewage, etc. have been piped from a wastewater generation device such as a domestic toilet bowl, sink, bath, etc. to the sewage main, but there are many bending points in the middle of this. Then, at such bending points, pipes are connected to each other by using a pipe joint called an elbow bent at the same angle as each bending point. In this way, pipe joints bent at the same angle as the bending point are used not only in the pipes of drainage facilities but also in other pipes.

[0003]

[Problems to be solved by the device]

 However, due to various factors, pipes such as drainage facilities are often not piped as designed.Therefore, at the bending point, it is rare for the pipe to bend at the bending angle that was designed in advance. The fittings that match are selected and used each time. Also, at this bending point, pipes with different bores may be connected, but in such a case, it is necessary to use pipe joints with different bores at the connecting parts provided at both ends. .

As described above, since the bending angle and the bore diameter of the pipe opening may differ at the bending point, many pipe joints having different bending angles and pipe diameters may be used for the bending point. It is necessary, and there is a strong demand from contractors to be able to use a small number of types of pipe joints. Therefore, an object of the present invention is to provide a pipe joint that can be connected with one pipe joint even if the bending angles are different. Another object of the present invention is to provide a pipe joint to which pipes having different bending angles and different diameters can be connected.

[0005]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems and to achieve the above object, and is a pipe joint including an outer pipe and an inner pipe, wherein the outer pipe is bent with a substantially constant curvature. The inner pipe is composed of a pipe portion and a pipe connecting portion provided at one end of the curved pipe portion, and the inner pipe is bent with substantially the same curvature as that of the outer pipe. It is composed of a pipe connecting part provided at one end, and the curved pipe part of the inner pipe is inserted into the curved pipe part of the outer pipe so that the insertion depth can be changed. A sealant is provided between the outer pipe and the curved pipe to make it watertight.

In the present invention, the pipe connecting portions of the inner pipe and the outer pipe are portions for connecting pipe bodies, and the structure of the pipe connecting portion may be any structure. For example, it may be a spigot in which the pipe connecting portion is inserted into and connected to the pipe body, or may be a receiving port in which the pipe body is inserted into the pipe connecting portion. Further, the diameter of the pipe connecting portion of the inner pipe and the diameter of the pipe connecting portion of the outer pipe must be matched with the diameter of the pipe body to be connected. For example, if the pipes to be connected have the same diameter, the pipes of the outer pipe and the pipes of the inner pipe may have approximately the same diameter, or the pipes to be connected may have different diameters. In this case, the diameter of the pipe connecting portion of the outer pipe may be different from the diameter of the pipe connecting portion of the inner pipe.

[0007]

[Action]

 In the pipe joint of the present invention, since the curved pipe portion of the inner pipe is inserted into the curved pipe portion of the outer pipe so that the insertion depth can be changed, the outer pipe can be changed by changing the insertion depth. The angle between the connecting direction of the pipe connecting portion and the connecting direction of the inner pipe connecting portion can be changed. Therefore, at the construction site, insert the curved pipe section of the inner pipe into the curved pipe section of the outer pipe at an appropriate depth to adjust the angle between the pipe connection section of the outer pipe and the pipe connection section of the inner pipe. Since the bending angle of the pipe to be connected can be adjusted, one pipe joint can be used even if the bending angle of the bending point changes at the construction site.

Further, if the outer pipe and the inner pipe have the same diameter at the pipe connecting portions, pipes having the same diameter can be connected. Also, if the diameters are different, it is possible to connect pipes having different diameters. In the present invention, the sealing material is provided between the inner pipe connecting portion and the outer pipe connecting portion, and the space is watertight so that water does not leak from between the outer pipe and the inner pipe.

[0009]

【Example】

 Next, an embodiment of the present invention will be shown. 1 and 2 show an embodiment of the present invention. FIG. 1 shows a state in which a curved pipe portion of an inner pipe is deeply inserted into a curved pipe portion of an outer pipe in a pipe joint for connecting pipe bodies having the same diameter. 2 is a sectional view showing a state in which the curved pipe portion of the inner pipe of the pipe joint shown in FIG. 1 is shallowly inserted into the curved pipe portion of the outer pipe. FIG. 3 shows another embodiment of the present invention and is a sectional view showing a pipe joint for connecting pipes having different diameters.

In FIGS. 1 and 2, A is a pipe joint, which includes an inner pipe 1 and an outer pipe 2. The inner pipe 1 is provided with a pipe connecting portion 11 having a receiving end at one end and a curved pipe portion 12 at the other end. The curved pipe portion 12 is bent with a constant curvature. The outer pipe 2 is provided with a pipe connecting portion 21 having a receiving end at one end and a curved pipe portion 22 at the other end. The curved pipe portion 22 is bent with substantially the same curvature as the curved pipe portion 12 of the inner pipe 1. The curved pipe portion 12 of the inner pipe 1 is inserted into the curved pipe portion 22 of the outer pipe 2. Reference numeral 3 denotes a rubber seal material provided between the curved pipe portion 12 of the inner pipe 1 and the curved pipe portion 22 of the outer pipe 2, and the seal member 3 makes the gap watertight.

Next, a method of using the pipe joint A will be described. First, the curved pipe portion 11 of the inner pipe 1 is inserted into the curved pipe portion 21 of the outer pipe 2 so that the bending angles of the two pipe bodies to be connected are equal. For example, when the bending angle of the two pipes to be connected is large, the curved pipe portion 11 of the inner pipe 1 is deeply inserted into the curved pipe portion 21 of the outer pipe 2 as shown in FIG. When the bending angle of the two pipes to be connected is small, the curved pipe portion 12 of the inner pipe 1 is shallowly inserted into the curved pipe portion 21 of the outer pipe 2 as shown in FIG.

After that, an adhesive is applied to the inner pipe 1 pipe connection portion 12 and the outer pipe 2 pipe connection portion 22, and the adhesive is also applied to the outer peripheral surfaces of the distal end portions of the connecting two pipe bodies. The two pipe connection portions 21 and the inner pipe 1 are inserted into the pipe connection portion 12 and connected. As described above, in this embodiment, by using the pipe joint A, the depth at which the curved pipe portion 11 of the inner pipe 1 is inserted into the curved pipe portion 21 of the outer pipe 2 even if the bending angle is different. You can connect with one pipe joint by changing.

The pipe joint Aa shown in FIG. 3 will be described. In the pipe joint Aa shown in FIG. 3, the pipe connecting portion 21a of the outer pipe 2a is a receiving port, the pipe connecting portion 11a of the inner pipe 1a is a connecting port, and the diameter of the pipe connecting port 21a is 150 mm. It is different from the embodiment shown in FIG. 1 that the diameter of the pipe connection port 11a is 200 mm. Others are the same as those in the embodiment shown in FIG.

[0014]

[Effect of device]

 The pipe joint of the present invention is inserted into the inner pipe connecting portion of the outer pipe so that the outer pipe connecting portion of the inner pipe can be changed in insertion depth. Therefore, pipes intersecting at various bending angles at the bending point can be connected. Therefore, it is convenient because it is not necessary to prepare many kinds of pipe joints for connecting pipe bodies having different bending angles.

Further, since the sealing material is provided between the inner pipe connecting portion of the outer pipe and the outer pipe connecting portion of the inner pipe, water does not leak from this portion. If the diameter of the pipe connecting portion of the outer pipe and the diameter of the pipe connecting portion of the inner pipe are the same, a pipe joint for connecting pipe bodies having the same diameter is obtained. Further, when the diameter of the pipe connecting portion of the outer pipe and the diameter of the pipe connecting portion of the inner pipe are made different, a pipe joint for connecting pipe bodies having different diameters is obtained. As described above, the present invention is extremely valuable because it has various effects.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, which is a pipe joint for connecting pipes having the same diameter, in which the curved pipe portion of the inner pipe is deeply inserted into the curved pipe portion of the outer pipe. FIG.

FIG. 2 is a cross-sectional view showing a state in which the curved pipe portion of the inner pipe is shallowly inserted into the curved pipe portion of the outer pipe in the pipe joint shown in FIG.

FIG. 3 shows another embodiment of the present invention and is a sectional view showing a pipe joint for connecting pipe bodies having different diameters.

[Explanation of symbols]

 A, Aa Pipe joint 1, 1a Inner pipe 11, 11a Pipe connecting part 12 Bending pipe part 2, 2a Outer pipe 21, 21a Pipe connecting part 22 Bending pipe part 3 Sealing material

Claims (3)

[Scope of utility model registration request] 1. A pipe joint comprising an outer pipe and an inner pipe,
The outer pipe is composed of a curved pipe portion that is bent with a substantially constant curvature and a pipe connecting portion that is provided at one end of the curved pipe portion, and the inner pipe is bent with substantially the same curvature as the curved pipe portion of the outer pipe. A curved pipe part and a pipe connecting part provided at one end of the curved pipe part, so that the curved pipe part of the inner pipe can change the insertion depth into the curved pipe part of the outer pipe. And a sealing material provided between the curved pipe portion of the inner pipe and the curved pipe portion of the outer pipe to be watertight. 2. The pipe joint according to claim 1, wherein the pipe connecting portion of the outer pipe and the pipe connecting portion of the inner pipe have substantially the same diameter. 3. The pipe joint according to claim 1, wherein the pipe connecting portion of the outer pipe and the pipe connecting portion of the inner pipe have different diameters.