JPH05280688A - Method for protecting connection of hard synthetic resin pipe and protective pipe for joint used in the same - Google Patents

Abstract

PURPOSE:To provide a connection of a hard synthetic resin pipe which is strengthened to have durability without any troubles of exfoliation, water leakage, etc. CONSTITUTION:A connection 13 of a hard synthetic resin pipe 11 is protected by connectively enclosing and overlapping the connection 13 formed of one end of the hard synthetic resin pipe 11 connectively inserted into a synthetic resin joint 12 having the inner diameter approximately equal to the outer diameter of one end of the hard synthetic resin pipe 11 with a joint protecting pipe 10 having one end having the inner diameter approximately equal to the outer diameter of the synthetic resin pipe 11 and the other end having the inner diameter approximately equal to the outer diameter synthetic resin joint 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for protecting a connecting portion of a hard synthetic resin tube and a protective tube for a joint used in the method.

[0002]

2. Description of the Related Art Conventionally, it is inexpensive as a piping material,
Hard synthetic resin pipes are used for ease of handling, and the connection is made by applying an adhesive to the end of one hard synthetic resin pipe and fitting it into the end of the other hard synthetic resin pipe to join or Adhesive is applied to the end of the hard synthetic resin pipe and the end of the other hard synthetic resin pipe, and the end of the one or the other hard synthetic resin pipe is fitted inside the both ends of the joint, respectively. It was joined. Further, in order to pipe the hard synthetic resin pipe to a predetermined height, the hard synthetic resin pipe is fixed to a building or the like by using a supporting tool and kept at the predetermined height.

[0003]

However, in the above-mentioned conventional method for connecting a rigid synthetic resin pipe, the adhesive is discolored, weathered, or even aged to spontaneously peel off, or vibration peeling due to vibration or temperature difference. Stretching and peeling occurred, causing problems such as water leakage. Further, as for the pipe having a predetermined height, there is a problem that the rigid synthetic resin pipe cannot be held by the support in water or in space. The present invention has been made in view of such circumstances, does not peel off with durability by strengthening the connecting portion of the hard synthetic resin pipe, does not cause trouble such as water leakage, and An object of the present invention is to provide a method for protecting a connecting portion of a hard synthetic resin pipe that can be easily piped to a predetermined height or depth even in a space, and a joint protection pipe used in the method.

[0004]

A method according to the above-mentioned object.
The method of protecting the connecting portion of the hard synthetic resin pipe described is a connecting portion formed by fitting one end of the hard synthetic resin pipe into a synthetic resin joint having an inner diameter substantially the same as the one end of the hard synthetic resin pipe,
Furthermore, one has an inner diameter that is substantially the same as the outer diameter of the synthetic resin tube, and the other is a protective tube for a joint that has an inner diameter that is substantially the same as the outer diameter of the synthetic resin joint. Is configured to. The joint protection tube used in the method for protecting a connecting portion of a hard synthetic resin pipe according to claim 2 is made of a synthetic resin having one end of the hard synthetic resin pipe and an inner diameter substantially the same as one end of the hard synthetic resin pipe. The connecting part that is fitted and joined to the joint,
Further, in the protective tube for a joint to be encapsulated and polymerized, one has an inner diameter substantially the same as the outer diameter of the hard synthetic resin tube, and the other has an inner diameter substantially the same as the outer diameter of the synthetic resin fitting. Further, it has a projection on its side surface, and the projection has a mounting hole for mounting a suspender for suspending the connected synthetic resin pipe. Here, the synthetic resin joint includes a synthetic resin pipe. It is preferable to use a hard polyvinyl chloride pipe as the hard synthetic resin pipe.

[0005]

According to the method of protecting the connecting portion of the hard synthetic resin pipe according to the first aspect, the protective pipe is movably fitted into the hard synthetic resin pipe in advance, and the hard synthetic resin pipe is connected to the synthetic resin joint. Since the protective pipe is moved to the joint formed by the joining and encapsulating and joining the joint, the joint can be shielded from the outside and strengthened. In the protection tube used for the method for protecting the connection portion of the hard synthetic resin tube according to claim 2, a hanging tool is attached to a mounting hole of a protrusion provided on a side surface of the protection tube, and the protection tube is joined to the protection tube. It is possible to suspend the hard synthetic resin pipe and the synthetic resin joint and easily pipe them to a predetermined height or depth.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is an explanatory view showing a method of protecting a connecting portion of a hard synthetic resin pipe according to a first embodiment of the present invention, and FIG. 2 is a sectional view of a joint protection pipe used in the same protecting method. As shown in FIG. 2, the joint protection tube 10 used in the method for protecting the connecting portion of the hard synthetic resin tube according to the first embodiment of the present invention is
The inside is formed with different inner diameters from approximately the center to both ends. As shown in FIG. 1, a method for protecting a connecting portion of a hard synthetic resin pipe according to a first embodiment of the present invention is such that the joint protection pipe 10 is a polyvinyl chloride thin tube which is an example of a hard synthetic resin pipe in advance. 11 is movably fitted. An end of a polyvinyl chloride thick tube 12 which is an example of a synthetic resin joint having an inner diameter substantially the same as the outer diameter of the polyvinyl chloride thin tube 11 by applying an adhesive (not shown) to the end of the polyvinyl chloride thin tube 11. It is inserted into the part and joined.
An adhesive is applied to the outside of the connecting portion 13 formed by the joining, and the joint protection tube 10 is moved to the connecting portion 13 and encapsulation polymerization is performed to join. As described above, in the method for protecting the joint portion of the hard synthetic resin pipe according to the embodiment of the present invention, the joint protection pipe 10 is encapsulated and joined to the joint portion 13 to be strengthened, so that the joint portion 13 is strengthened. Does not come into contact with the outside, and the adhesive that bonds the PVC thin tube 11 and the PVC thick tube 12 to each other does not discolor, weather, or age, and does not spontaneously peel off. Water leakage and the like can be prevented without causing vibration separation or expansion / contraction separation due to temperature difference. If the method for protecting the connecting portion of the hard synthetic resin pipe is used, the above effect can be obtained even when used in cold and warm water.

Next, a method of protecting the connecting portion of the hard synthetic resin pipe according to the second embodiment of the present invention will be described. FIG. 3 is an explanatory view showing a method of protecting the connecting portion of the hard synthetic resin pipe according to the second embodiment of the present invention. In the method for protecting the connection portion of the hard synthetic resin pipe according to the second embodiment of the present invention, an elbow (a joint bent in an L shape) which is an example of a synthetic resin joint is used instead of the thick polyvinyl chloride pipe 12. 1)
4, in the same manner as in the first embodiment, the joint protection tube 10 was fitted in the polyvinyl chloride thin tube 11 in advance, and both ends of the elbow 14 were coated with an adhesive agent. Each of the vinyl thin tubes 11 is fitted and joined. An adhesive is applied to the connecting portion 13 formed by the above-mentioned joining, and the joint protection tube 10 fitted in the polyvinyl chloride thin tube 11 is moved to encapsulate the connecting portion 13 to join and strengthen it. As described above, if the method for protecting the connecting portion of the hard synthetic resin pipe according to the second embodiment of the present invention is used, the connecting portion 13 is reinforced and the same effect as that of the first embodiment can be obtained. it can.

Next, a method of protecting the connecting portion of the hard synthetic resin pipe according to the third embodiment of the present invention will be described. FIG. 4 is an explanatory view showing a method of protecting the connecting portion of the hard synthetic resin pipe according to the third embodiment of the present invention. In the method for protecting the joint portion of the hard synthetic resin pipe according to the third embodiment of the present invention, a socket 15 which is an example of a synthetic resin joint is used instead of the elbow 14, and each of the polyvinyl chloride thin pipes 11 is provided. The joint protection tube 10 is fitted into the socket 15, and the polyvinyl chloride thin tubes 11 are attached to the second ends of the socket 15.
In the same manner as in the above embodiment, the fitting protection tube 10 is encapsulated and joined to the connecting portion 13 formed by the end portion of the polyvinyl chloride thin tube 11 and the end portion of the socket 15. , Strengthen the connecting portion 13.

Next, a protective pipe for a joint used in a method for protecting a connecting portion of a hard synthetic resin pipe according to a fourth embodiment of the present invention will be explained, and a protective pipe for a hard synthetic resin pipe using the protective pipe for a joint will be described. A method of protecting the connecting portion will be described. FIG. 5 is a cross-sectional view of a joint protection tube used in a method for protecting a connecting portion of a hard synthetic resin tube according to a fourth embodiment of the present invention, and FIG. 6 is a hard synthetic resin tube using the joint protection tube. It is explanatory drawing of the protection method of a connection part. As shown in FIG. 5, the joint protection tube 16 includes a protrusion 17 on the side surface of the joint protection tube 10, and the protrusion 1
7 is formed by providing a mounting hole 18. As shown in FIG. 6, the method for protecting the joint portion of the hard synthetic resin pipe using the protective pipe for joint 16 is to insert the protective pipe for joint 16 into the PVC thin tube 11 in advance so as to be movable. Then, an adhesive is applied to the end portion of the polyvinyl chloride thin tube 11, and the polyvinyl chloride thin tube 11 is fitted inside the thick polyvinyl chloride tube 12 to form the connecting portion 13 as in the first embodiment. To do. Then, an adhesive is applied to the outside of the connecting portion 13, the joint protection tube 16 is moved to the connecting portion 13, and encapsulation polymerization is performed to join the joint protecting tube 16 to the connecting portion 13. Further, one side of a hanging band 19 which is an example of a hanging tool penetrates through the mounting hole 18 and is mounted, and the other side of the hanging band 19 is engaged with a connecting tool which is fixed to an edge of a cage or the like (not shown) to have a predetermined depth. It can be easily piped in water. Protective tubes 10 and 16 for the joint
Can also be used in three-way joints. In this embodiment, the adhesive is used for joining, but it is also possible to join by heat welding.

[0010]

According to the method of protecting the joint portion of the hard synthetic resin pipe according to the first and second aspects of the present invention, the joint protective tube is provided at the joint portion formed by inserting the hard synthetic resin pipe into the joint made of synthetic resin. Since the encapsulation polymerizes and joins, the connecting part is shielded from the outside and reinforced, and the connecting part is not weathered or aged so that spontaneous peeling does not occur. It does not have any problems such as water leakage and is durable. Particularly, in the joint protection tube used in the method for protecting the joint portion of the hard synthetic resin pipe according to claim 2, a protrusion is provided on a side surface of the joint protection pipe, and the protrusion is connected to the synthetic resin tube. Since a mounting hole for mounting a suspender for suspending is attached, it is possible to use the mounting hole to easily perform piping at a predetermined height or depth even in water or in the air.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a method of protecting a connecting portion of a hard synthetic resin pipe according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a joint protection tube used in the protection method.

FIG. 3 is an explanatory view showing a method for protecting a connecting portion of a hard synthetic resin pipe according to a second embodiment of the present invention.

FIG. 4 is an explanatory view showing a method for protecting a connecting portion of a hard synthetic resin pipe according to a third embodiment of the present invention.

FIG. 5 is a cross-sectional view of a joint protection tube used in a method for protecting a connecting portion of a hard synthetic resin tube according to a fourth embodiment of the present invention.

FIG. 6 is an explanatory diagram of a method for protecting a connecting portion of a hard synthetic resin pipe using the joint protection pipe.

[Explanation of symbols]

 10 Protective tube for joint 11 PVC thin tube 12 Polyvinyl thick tube 13 Connection part 14 Elbow 15 Socket 16 Protective tube for joint 17 Projection part 18 Mounting hole 19 Hanging band

Claims (2)

[Claims] 1. A connecting portion formed by fitting and joining one end of a hard synthetic resin pipe to a synthetic resin joint having an inner diameter substantially the same as one end of the hard synthetic resin pipe, and further, one of the outside of the synthetic resin pipe. Hard synthetic resin pipe, which has an inner diameter substantially the same as the diameter and the other has a protective pipe for a joint having an inner diameter substantially the same as the outer diameter of the synthetic resin joint, which is encapsulated and joined. How to protect the connecting part of. 2. A joint protection tube for encapsulating and superimposing a connecting portion formed by fitting and joining one end of a hard synthetic resin pipe into a synthetic resin joint having an inner diameter substantially the same as one end of the hard synthetic resin pipe. Where one has an inner diameter substantially the same as the outer diameter of the hard synthetic resin pipe, the other has an inner diameter substantially the same as the outer diameter of the synthetic resin joint, and is provided with a protrusion on the side surface. The joint protection tube used in the method for protecting the connection portion of the hard synthetic resin pipe, wherein the protrusion has a mounting hole for mounting a suspender for suspending the connected synthetic resin pipe.