JP2002310371A - Pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe joint capable of easily connecting ends of adjacent pipes to each other by winding the joint around the outer circumference of the ends of the pipes adjacent to each other, covering and energizing the joint without preparing any exclusive joint. SOLUTION: The joint 1 is formed in a sheet in order to connect the ends of adjacent synthetic resin pipes 2 and 3 to each other. A heater 5 is built in a joint body part 4 formed of the same synthetic resin as that of the pipes 2 and 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting pipes.

[0002]

2. Description of the Related Art Conventionally, as a joint for connecting adjacent pipes, one of adjacent pipes which is provided integrally at one end of one of the pipes or one which is formed separately from the pipes is used. Are known. Regardless of whether the joint is provided integrally with the end of one of the tubes or a joint made separately from the tube, the joint is fitted to the size (outer diameter) of the tube so that the end of the tube is fitted. Since it is made annular, it can handle only one type of pipe (outer diameter), and there is a problem that it cannot be used without a special joint.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is not necessary to prepare a dedicated joint as in the prior art. It is an object of the present invention to provide a pipe joint which can easily join ends of adjacent pipes by energizing.

[0004]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention relates to a joint formed in a sheet shape for connecting ends of synthetic resin tubes adjacent to each other. The gist is that a heating element is incorporated in a joint main body made of the same kind of synthetic resin material as the pipe.

[0005] With this configuration, it is not necessary to prepare a dedicated joint as in the prior art, and a sheet-like joint cut to a required length in accordance with the outer diameter of the pipe to be connected can be used for adjacent pipes. By winding and energizing over the outer circumference of the end, the sheet-like joint and the outer circumference of the end of the pipe are fused, so that the ends of the pipes adjacent to each other can be easily joined together.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a first embodiment shown in FIGS. 1 to 6 will be described. Reference numeral 1 denotes a sheet-like joint for connecting ends of synthetic resin tubes 2 and 3 adjacent to each other. The joint 1 is made by incorporating a heating element 5 into a joint body 4 made of the same kind of synthetic resin material as the tubes 2 and 3 along the length direction of the joint body 4. The heating elements 5 are arranged at regular intervals in the width direction of the joint body 4 and are embedded so that a part of the joint body 4 in the thickness direction of the joint body 4 in the radial direction protrudes from the inner surface side. . Then, the sheet-like joint 1 is wound and covered so as to straddle the ends of the adjacent pipes 2 and 3,
An electrode made of the same kind of synthetic resin material as the pipes 2 and 3 and the joint body 4 between both ends of the sheet-like joint 1 while facing the inner surfaces of the sheet-like joint 1 with both ends facing each other. An electrode wire 7 exposed on one side of the electrode plate 6 with the plate 6 interposed therebetween is in contact with one end of the heating element 5 at one end of the sheet-like joint 1.
The electrode wires 8 exposed on the other surface of the sheet-like joint 1 are in contact with the other end of the heating element 5 at the other end of the sheet-like joint 1 to connect the electrode wires 7 and 8 in parallel to the heating element 5. The state is changed from the outside of both ends of the sheet-like joint 1 to the clamp members 9.
And hold it by tightening with the screw 10,
A power supply is connected to an electrode wire 7 protruding from one end of the electrode plate 6 and an electrode wire 8 protruding from the other end of the electrode plate 6, and the heating element 5 generates heat by energizing the heating element 5. When a current flows through the heating element 5 and the heating element 5 generates heat, the outer periphery of the joint body 4 and the ends of the pipes 2 and 3 in contact with the heating element 5 are melted. The welded portion of the outer periphery of the sheet joint 1 and the ends of the tubes 2 and 3 is solidified by cooling, and the ends of the adjacent tubes 2 and 3 are joined by the sheet joint 1. Further, both ends of the sheet-like joint 1 and a base portion of the electrode plate 6 sandwiched between the both ends are also melted by the heat generated by the heating element 5, and thereafter, the power supply is stopped. The fused part of the solidified by cooling,
Will be joined. When the ends of the tubes 2 and 3 adjacent to each other by the sheet-like joint 1 have been joined, the power supply is disconnected from the electrode wires 7 and 8 and the clamp member 9 is removed.

[0007] The sheet-like joint 1 is formed in a belt-like continuous state and wound in a roll shape, and is cut to a required length in accordance with the outer diameter of the pipes 2 and 3 to be connected. Is done.

Although the first embodiment has been described above, the electrode plate 6 used in the present invention is not limited to the first embodiment, and the second embodiment shown in FIG. The electrode wire 11 is connected to the heating element 5 by using the electrode plate 6 as shown in FIG.
12 may be connected in series, and a power supply may be connected to the electrode wire 11 protruding from one end of the electrode plate 6 and the electrode wire 12 protruding from the other end of the electrode plate 6 to supply electricity to the heating element 5.

[0009]

As described above, according to the present invention, there is no need to prepare a dedicated joint as in the prior art, and the sheet cut to the required length according to the outer diameter of the pipe to be connected. The sheet-like joint and the outer periphery of the end of the tube are fused by energizing the coiled joint so as to straddle the outer periphery of the end of the adjacent tube, so that the ends of the adjacent tubes are easily joined together. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pipe joint according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the pipe joint.

FIG. 3 is a perspective view of the electrode plate.

FIG. 4 is a perspective view showing a state in which ends of adjacent pipes are connected to each other by the pipe joint.

FIG. 5 is a cross-sectional view showing a state in which ends of adjacent pipes are connected to each other by the pipe joint.

FIG. 6 is a cross-sectional view showing a state in which ends of adjacent pipes are connected to each other by the pipe joint.

FIG. 7 is a perspective view of an electrode plate according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet-shaped joint 2, 3 tube 4 Joint main body 5 Heating element 6 Electrode plate 7, 8 Electrode wire 9 Clamp member 10 Screw 11, 12 Electrode wire

Claims (1)

[Claims] 1. A joint formed in a sheet shape for connecting ends of synthetic resin pipes adjacent to each other to each other, wherein a heating element is provided on a joint main body made of the same kind of synthetic resin material as the pipe. A pipe joint characterized by incorporating a pipe.