JP3031545U - Pipe fitting - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] When connecting a polyethylene pipe having a slightly different outer diameter to a PVC pipe, the nut or packing to be used can be definitely discriminated, and the pipe joint can be easily inserted and connected. To do so. At least the outer surface of each nut (4, 4a) that penetrates a polyethylene pipe (10) or a vinyl chloride pipe (11) into a joint body (2) and is screwed into screw parts (3, 3a) provided on the outer peripheral surfaces of both ends of the joint body (2). Are formed in different colors by different colors, and the outer peripheral portions of the packings 8 and 8a fitted between the joint body 2 and the nuts 4 and 4a are formed to have different shapes. , 4a, and further, whether or not the packing 8, 8a is suitable for use.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention is used when connecting a polyethylene pipe and a PVC pipe after repairing and inspecting a polyethylene pipe branched from a water main and drawn in, and an off-the-shelf PVC pipe distributed in the home. It is for pipe fitting.

[0002]

[Prior art]

 Conventionally, PVC pipes have been used for such water pipes, but polyethylene pipes have recently been used for branch pipes branched from the main water pipes, which has led to When connecting with a PVC pipe, there is a slight difference in the outer diameter between the polyethylene pipe and the PVC pipe even if they have the same inner diameter, and the polyethylene pipe is formed to have a larger diameter. However, it is difficult to judge whether or not each nut of the pipe joint that connects pipes with different outer diameters together with the material is suitable because it has no difference in appearance. Therefore, at the construction site, each nut and each packing are actually inserted one by one into a polyethylene pipe or a PVC pipe, and the work is being performed while distinguishing whether they are suitable or not. .

[0003]

[Problems to be solved by the device]

 In this way, it is difficult to fit each nut and each packing into a polyethylene pipe or a PVC pipe to determine conformity / nonconformity. Therefore, there was a problem that water leaked from the joint of the pipe joint, and improvement measures were strongly desired. Therefore, the present invention has been made to solve the problems found in the prior art, in which at least the outer surface of each nut is formed by different colors, and each packing is formed with a different outer peripheral shape. However, the nuts and packings used for polyethylene pipes can be easily discriminated based on the different colors and shapes so that they can be used properly.

[0004]

Means for Solving the Problems In order to achieve the above object, a pipe joint according to the present invention is provided with a screw provided on outer peripheral surfaces of both ends of the joint body by penetrating a polyethylene pipe or a polyvinyl chloride pipe into the joint body. By coloring at least the outer surface of each nut to be screwed to the part with a different color and forming different colors, and by forming the outer peripheral portion of each packing to be fitted between the joint body and each nut with different shapes. , So that it is possible to visually check the conformity / nonconformity without actually mounting them one by one.

[0005]

[Embodiment of device]

 An embodiment of a pipe joint according to the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a pipe joint, and the pipe joint 1 has threaded portions 3 and 3a provided at both left and right ends of an outer peripheral surface of a cylindrical joint main body 2 with respect to these threaded portions 3 and 3a. The screw grooves 3'and 3a 'provided on the inner circumferences of the nuts 4 and 4a are screwed. On the inner circumference of the joint body 2, there are provided at the center a projecting portion 5 for stopping the respective ends of the polyethylene pipe 10 or the vinyl chloride pipe 11. The inner diameter of the joint body 2 is formed such that one (left side) of the protrusion 5 is slightly larger than the other (right side).

The inner diameter of the nut 4 is slightly larger than the inner diameter of the nut 4a. At least the outer surfaces of the nuts 4 and 4a are colored differently, for example, the nut 4 is colored gold and the nut 4a is colored silver. Then, wedges 6 and 6a, nylon rings 7 and 7a, ring-shaped packings 8 and 8a, and O-rings 9 and 9a are fitted into the inner circumferences of the nuts 4 and 4a in this order from the inner side. 9 to 9 are formed slightly larger than 6a to 9a, respectively. A polyethylene pipe 10 is passed through the nut 4 and a PVC pipe 11 is passed through the nut 4a. The polyethylene pipe 10 and the PVC pipe 11 have the same inner diameter as shown in the cross section in FIG. The tube 10 has a slightly larger diameter.

On the other hand, as shown in FIGS. 3 (a) and 4 (a), the packing 8 to be fitted into the nut 4 has protrusions 12 and 13 provided on both front and back sides of the outer peripheral portion, respectively. As shown in FIGS. 3 (b) and 4 (b), the packing 8a fitted into the nut 4a is provided with the protrusion 12 only on the front side surface of the outer peripheral portion so that the packing 8a and the packing 8 have different external shapes. Has been formed.

[0008] The nuts 4 and 4a thus formed by different colors and the packings 8 and 8a formed to have different appearances are used for, for example, a polyethylene pipe and a PVC pipe used in an existing water pipe. When repairing or repairing the connection part of, at the construction site, insert the nut 4 and the packing 8 into the polyethylene pipe, and insert the nut 4a and the packing 8a into the PVC pipe to make a distinction. Since it is possible to work without any problems, it has good workability and can be used without making mistakes during use, making it easy to work onsite and using the nuts 4, 4a and packings 8, 8a by mistake. Does not cause leakage from the pipe joint.

[0009]

[Effect of device]

 As described above, in the pipe joint according to the present invention, at least the outer surface of the nut for inserting the polyethylene pipe and the polyvinyl chloride pipe of the water pipe is formed by coloring different colors so that the nuts can be selected by different colors. In addition, since the packing is made to have a different external shape so that it can be identified by the difference in shape, it is easy to repair and inspect the existing water pipe connections, and the workability is good. Due to the work, the nuts and packings can be used efficiently and accurately without making mistakes when they are attached, and the advantage such as the prevention of water leaks can be obtained.

[Brief description of drawings]

FIG. 1 is a half sectional view of a pipe joint according to the present invention.

FIG. 2 is a half-sectional view of the pipe joint shown in FIG. 1 in use.

FIG. 3 is a perspective view of a packing used for a polyethylene pipe and a PVC pipe.

FIG. 4 is a sectional view of FIG.

[Explanation of symbols]

 1 Pipe Joint 2 Joint Main Body 3,3a Screw Part 4,4a Nut 8,8a Packing 10 Polyethylene Pipe 11 PVC Pipe

Claims (1)

[Scope of utility model registration request] 1. A color-coded structure in which at least the outer surface of each nut is colored in a different color by penetrating a polyethylene pipe or a vinyl chloride pipe into the joint body and screwing the threaded portions provided on the outer peripheral surfaces of both ends of the joint body. Further, the pipe joint is characterized in that the outer peripheral portion of each packing to be fitted between the joint body and each nut is formed to have a different shape.