JPH02134487A - Piping executing method for service water - Google Patents

Abstract

PURPOSE:To facilitate pipe fitting work between a service water pipe and a branch pipe by forming the branch pipe from a resin pipe, fitting a flexible pipe thereon, and fitting one or both ends of the resin pipe to a one-touch metal fitting. CONSTITUTION:In execution of a service water piping to connect at least one branch pipe to a service water pipe 1 through a fitting A equipped with a one-touch fitting 6, the branch pipe is formed of a plastic pipe 7, whereon a flexible pipe 8 such as a CD pipe of for ex. plastic is fitted, and one or both ends of the plastic pipe 7 are fitted to the one-touch fitting 6 in the direction of A, followed by fixing by hand. This shortens the time for connection works for the service water pipe with plastic pipe, and protection and fixation of the plastic pipe can be surely made.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the construction of water pipes, and particularly to a method of constructing water pipes suitable for facilitating connection between water pipes and resin pipes.

[Conventional technology]

In the conventional construction method for water pipes, as shown in Figs. This was a construction method in which a branch pipe 5 made of a metal enamel pipe or a resin pipe was connected via a joint 4. Joints were connected to metal water pipes using a mechanical method, and to resin pipes such as polybutene pipes, a heat fusion method was used.

However, the mechanical construction method involves inserting a mechanical joint with a cap nut and a split ring and tightening it with two adjustable spanners, which involves many work steps and the tightening force is unclear, resulting in quality problems.

In addition, with the heat fusion method, the outer surface of the water pipe and the inner surface of the joint are melted and bonded together using a heat fusion heater, so it is necessary to confirm a predetermined temperature rise, and the fusion time takes about 30 seconds. Lots of work time. Furthermore, due to the size of the tool, it is not suitable for construction in narrow piping areas.

On the other hand, when resin pipes such as plastic pipes are used as water pipes, most of the pipes are floor pipes without protective pipes such as flexible pipes, and the resin pipes are stepped on to perform floor construction after piping. There is a risk of staining the resin pipe by piercing a nail or dropping sparks from welding. In addition, condensed water stains and rusts building materials, and there are few fixing devices for resin pipes, so when water flows and pressurizes, the resin pipes move and the joints with the end fixtures tend to break. There is a problem. In order to match the size of the protection tube to the fitting, a large protection tube is required, which is costly and inefficient. Since the protective tube is harder than the resin tube and does not bend, the cost of transportation increases.

[Problem to be solved by the invention]

In the conventional construction method for water pipes, the joints between water pipes and water pipes such as resin pipes branched from the water pipes are connected using mechanical construction methods or heat fusion methods, which results in poor workability. The cost will be high.

This becomes the biggest problem when there are a large number of water pipes, such as in apartment complexes.

An object of the present invention is to provide a method for constructing water pipes in which it is easy to construct a joint between a water pipe and a branch pipe, and the branch pipe is formed of a resin pipe to facilitate insertion of a flexible pipe. It is in.

[Means to solve the problem]

In order to achieve the above object, a method for constructing water pipes according to the present invention is a method for constructing water pipes in which at least one branch pipe is connected to a water pipe via a joint, in which the joint is provided with a one-touch fitting. At the same time, the branch pipe is formed of a resin pipe, and after the flexible pipe is inserted into the outer surface of the resin pipe, one end or both ends of the resin pipe are fitted into the one-touch fitting.

Further, in a method of constructing water pipes, which connects at least one branch pipe to a water pipe via a joint.

The joint is equipped with a one-touch fitting, and the branch pipe is made of a resin pipe. A tapered part is provided at one or both ends of the resin pipe so that it can be freely inserted into the bent flexible pipe, and the tapered part is cut to adjust it to the specified length. After that, one end or both ends of the resin pipe may be fitted into a one-touch fitting.

The flexible pipe shall have a bending radius of at least 100 mm and be fixed in advance to a construction member or cement construction on the piping route.

[Effect]

According to the water pipe construction method of the present invention, by providing a one-touch fitting in the joint between the water pipe and the resin pipe, one end or both ends of the resin pipe are free of deposits, so that the outer diameter of the resin pipe is slightly smaller than the outer diameter of the resin pipe. A flexible tube with a large inner diameter is inserted, and then one or both ends of the resin tube are manually fitted into the one-touch fitting.

In addition, by providing a tapered part at one or both ends of the resin tube, it can be easily inserted into a bent flexible tube from the tip, and after cutting the tapered part and adjusting it to the specified length, it can be inserted into a one-touch fitting. be done.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 1, in a method of constructing water pipes in which at least one branch pipe is connected to a water pipe 1 via a joint 4, the joint 4 is equipped with a one-touch fitting 6, and the branch pipe is connected to a plastic pipe. (Bending elastic modulus 30oO~5o
After inserting a flexible tube 8 such as a CD tube made of synthetic resin into the outer surface of the resin tube 7, one end or both ends of the resin tube 7 can be inserted with one touch from the direction of the six arrows. It is configured to be attached to the metal fitting 6 and fixed manually. That is, the branch pipe 5 shown in FIGS. 5 and 6
The water piping according to the present invention consists of replacing the part with a resin pipe and attaching it to both ends using one-touch joints.

In addition, as shown in FIG. 4, the one-touch fitting 6 has an O-ring 11 installed inside the socket body 10 to maintain watertight or airtightness with the inserted resin tube 7, and the resin tube 7 is held in a non-returning manner. A compression coil spring 12, a slide ring 13, and a stop ring 14 are provided so that the lock can be manually released.
Equipped with etc.

According to this embodiment, the joint between the water pipe and the resin pipe is provided with a one-touch fitting, and first, only the flexible pipe is fixed in advance to a construction member such as a floor on the piping route while being supported at a predetermined interval. Alternatively, it may be embedded in a cement structure in advance. On the other hand, the resin pipe is delivered to the site with one or both ends free without a joint, and inserted into the previously fixed flexible pipe.At this time, the inner diameter of the flexible pipe is larger than the outer diameter of the resin pipe. Slightly larger dimensions are sufficient 1.For example, the outer diameter of the resin tube is 17.0+am, while the inner diameter of the flexible tube is smaller than the normal combination.2
A 2.0mm CD tube can be used. Note that the sheath pipe construction method is partially used for electrical wires, etc.

In the case of electric wires, this method involves attaching a wire to the end of the wire, inserting it into the sheath tube, and then pulling the wire through. However, according to this embodiment, a resin pipe such as a polybutene pipe has a bending elastic modulus of 3000 to 5000 kgf/cra.
2, the resin tube can pass through a flexible tube with a length of about 10 m and a minimum bending radius of 10011 In without any problem. By inserting the resin pipe into a protective pipe such as a flexible pipe in this way, damage to the resin pipe is eliminated during construction. Then, by inserting one end or both ends of the resin pipe into the one-touch fitting and turning the safety lock with one hand, the connection work of the joint is completed, and labor-saving work is achieved.

Furthermore, when performing maintenance such as replacing the resin pipe, the resin pipe can be easily replaced by manually removing both ends of the resin pipe from the one-touch fittings without performing any construction work on the floor or the like.

Another embodiment of the invention is shown in FIGS. 2 and 3.

A tapered part B is provided at one end or both ends of the resin pipe 7, and the resin pipe 7 is freely inserted into a flexible pipe bent to a bending radius R. After adjusting the tapered part B to a predetermined length L by cutting the tapered part B from the broken line part C, This is a configuration in which one or both ends of the tube 7 is replaced with a one-touch fitting 6. Note that the tapered portion B may have a shape having an inclination angle θ on the end face, as shown in FIG.

[Effects of the Invention] According to the present invention, as a method for constructing water pipes, the water pipe and the resin pipe can be connected by fitting the resin pipe into a one-touch fitting and inserting a flexible pipe into the resin pipe. This has the effect of shortening the working time and ensuring the protection and fixation of the resin pipe.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing one embodiment of the present invention, FIG. 2 is a sectional view showing the main parts of this embodiment, and FIG. 3 is a sectional view showing another embodiment of the present invention. Partial cross-sectional view of one-touch fitting 1.
5 and 6 are perspective views showing the conventional technology. 1...Water pipe, 2...Header, 3...T piece, 4
... Fitting, 5... Branch pipe, 6... One-touch fitting, 7... Resin pipe, 8... Flexible pipe.

Claims (1)

[Scope of Claims] 1. A method for constructing water pipes in which at least one branch pipe is connected to a water pipe via a joint, in which the joint is provided with a one-touch fitting and the branch pipe is formed of a resin pipe; A method for constructing water piping, comprising: inserting a flexible tube into the outer surface of the resin tube, and then fitting one or both ends of the resin tube into the one-touch fitting. 2. In a method for constructing water pipes in which at least one branch pipe is connected to a water pipe via a joint, the joint is provided with a one-touch fitting, the branch pipe is formed of a resin pipe, and one end of the resin pipe or A bent flexible tube with tapered portions provided at both ends is inserted freely, the tapered portions are cut to adjust the length to a predetermined length, and one or both ends of the resin tube are fitted into the one-touch fitting. A distinctive construction method for water piping. 3. The flexible tube has a bending radius of at least 100 mm;
3. The method of constructing water pipes according to claim 1 or 2, wherein the water pipes are fixed in advance to a structural member on the pipe route. 4. The flexible tube has a bending radius of at least 100 mm;
3. The method for constructing water pipes according to claim 1, wherein the water pipes are embedded in a cement structure on the pipe route in advance.