JPH0427034A - Structure and method for installing water pipe - Google Patents

Abstract

PURPOSE:To surely connect water pipes by connecting lead tubes to a tube fitting by means of external and internal threads without making soldering irrespective of the diameters and material of the tubes and tube fitting. CONSTITUTION:This water pipe installing structure is composed of a plurality of water pipes, external thread members, and tube fittings and flanges 5 are formed at the end sections of lead tubes 1 and 4 having different diameters by means of a flange forming device 16 and a tamping 17 after external thread members 2 and 9 are passed through the end sections of the lead tubes 1 and 4. A tube fitting 3 is connected to the tubes 1 and 4, with the smaller-diameter fitting section 10 of the fitting 3 being connected with the external thread member 2 of the tube 1 with a packing in between and larger-diameter fitting section 11 with the external thread section 9 of the tube 4 with a packing in between. Thus the connection between a lead tube and tube fitting is performed by using the threads without making soldering irrespective of the diameter and material of the pipe to be connected to the lead tube. Therefore, water pipe installing work can be performed surely by workers having no much experiences and the general usefulness of this structure can be improved.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a water pipe piping structure and its construction method, and its purpose is to connect multiple water pipes safely, reliably and quickly when constructing water pipes. The purpose of the present invention is to provide a piping structure and a method for constructing the same.

(Prior Art) Conventionally, when piping water pipes, especially water lead pipes, joints with pipe joints have been joined by a method called a hot method.

To explain this hot method based on Figure 8, first, tap the end (b) of the water pipe (a) with a tip or conical tampin.
Spread this end (b) thinly into a trumpet shape.

The pipe joint (c) is to be joined to the trumpet-shaped end (b), and for this joining, the conical end (d) of the pipe joint is inserted into the trumpet-shaped end (b). , solder (e) was poured into that part to join it.

(Problems to be Solved by the Invention) However, the hot method has the following problems.

That is, if the end of the water lead pipe (a) is struck with a tampin to form a trumpet shape, the trumpet-shaped end (b) inevitably becomes thinner and its strength decreases.

To apply /% solder to the joint between the water lead pipe (a) and the pipe joint (c), heat the joint with a torch and
The method used was to pour solder into these joints, but this soldering process required "tricks" and considerable skill.

Therefore, if an unskilled person performs this joining work, it may result in improper soldering and a defective joint, or may cause burns during the work.
There was a problem that it took a long time to complete the joining work.

This has become a serious problem, especially in recent years when the number of people skilled in soldering work using torch lamps is decreasing.

(Means for Solving the Problems) The present invention includes a plurality of water pipes, a male thread member, and a pipe joint, and at least one of the water pipes is a lead pipe,
A ring-shaped collar is formed at the end of the lead pipe, a male thread member is inserted through the outer periphery of the lead pipe, a pipe joint is screwed into at least one joint part or the male thread member on the outer periphery of the lead pipe, and the remaining A piping structure of a water pipe in which the joint part is joined to a pipe other than the lead pipe, and a male screw member is inserted in advance into the outer periphery of the lead pipe, a ring-shaped collar is formed at the end of the lead pipe, and one part of the pipe joint is inserted. the joint portion is screwed into the male threaded member by sandwiching the flange;
The above problem is solved by a construction method for a water pipe piping structure in which the remaining joint portion is joined to a pipe other than the lead pipe.

(Example) The piping structure of the water pipe and its construction method according to the present invention will be explained below based on the drawings.

FIG. 1 shows a first embodiment of the piping structure of a water pipe.

This piping structure consists of at least one lead pipe (1), a male screw member (2), and a pipe joint (3) constituting a water pipe.

In this first embodiment, the inner diameter of the other pipe (4) constituting the water pipe is different from the lead pipe (1) (in this example, it is larger in diameter than the lead pipe (1)).

Further, the pipe (4) is a lead pipe in this example, or may be a pipe made of a material other than lead.

A ring-shaped collar (5) is formed at the end of the lead pipe (1).

In addition, in this example, the other pipe (4) is also a lead pipe,
Like the lead pipe (1), a collar (6) is also formed.

A male screw member (2) is inserted through the outer periphery of the lead pipe (1).

The male screw member (2) consists of a collar portion (7) and a threaded portion (8), and a male thread (8a) is carved on the outer periphery of the threaded portion (8).

In this example, there is also a male thread member (9) on the outer periphery of the other pipe (4).
is inserted.

In this first embodiment, the pipe joint (3) has a joint portion aω with a different diameter.
It is a socket joint with σD.

The joint part 0ω has a small diameter, the joint part (111 has a large diameter,
Female threads (10a) (lla) are carved on the inner periphery of each, and these female threads (10a) (lla) are screwed together with the male threaded member (21 (91) to connect the lead pipe (1) and the other pipe. (4) or connected to the pipe joint (3).

In addition, there is a beam qz between the male thread member (21 (9)) and the collar (51 (6)), and there is a gasket between the collar +5+ (6) and the center flange inside the pipe joint (3). 03 has been intervened.

Next, a method of constructing the water pipe structure as described above will be explained with reference to FIGS. 2(A) to 2(D).

However, in this example, the construction method assumes that the other pipe (4) is also a lead pipe.

First, as shown in Figure 2 (A), lead pipes m (
4) Insert the male screw member (2) +9+ into the outer periphery of the screw.

At this time, also insert the leaf az.

Next, as shown in FIGS. 2(B) and 2(C), a collar (5) is formed at the end of the lead pipe (1).

In order to form this guard (5), the inventor of the present application must
The flange shaper 0 and the tampin (17) disclosed in Japanese Patent No. 44955 are used.

As shown in Fig. 7(A), the flange shaper (1e is a semi-cylindrical body divided into two halves (18), a pivot a9 connecting these, a protruding piece ■, a set screw (21), and a tightening nut ( 22).

A stepped portion (23) is formed in the semi-cylindrical body as (Ill).

The tamping pin is a metal bar-shaped jig having a large diameter part (24) and a small diameter part (25) connected to each other, and the bottom surface of the large diameter part (24) is a shoulder part (26).

The diameter of the small diameter portion (25) is approximately the same as the inner diameter of the lead pipe.

To perform the flange forming work, as shown in FIG. 7(B), close the semi-cylindrical body 08αg of the flange shaper αG and insert the lead pipe (1).
, put the set screw (21) between the protrusions (■), and tighten the tightening nut (22).

In this state, let the end of the lead pipe (1) protrude from the tip of the flange shaper (1) by an appropriate length.

Next, as shown in Figure 2 (B), the small diameter part of the tampin σ force (
25) into the lead pipe (1) and place the shoulder (26) against the edge of the lead pipe (1).

Hit the rear end of the large diameter part (24) of the tamper pin αη with a hammer or the like.

Since the lead pipe is soft (easily deformed), it is compressed between the shoulder part (26) of the tampin (lη) and the step part (23) of the collar part shaping device, and is shaped into a ring-shaped collar (5). Figure 2 (C)
reference).

The collar (6) on the other tube (4) is also formed by the above method.

After this, the small diameter joint part (10) of the pipe joint (3) (socket joint) is screwed into the male thread member (2) on the outer periphery of the lead pipe (1), and the large diameter joint part (11) is screwed into the pipe joint (11). Screw it into the male screw member (9) of (4).

At this time, a packing sheet σ3 is interposed between the lead pipe (1), the pipe (4), and the pipe joint (3).

The pipe (4) may be other than a lead pipe, in which case the pipe (4)
The connection between the pipe joint (q1) and the joint part q1) of the pipe joint (3) is achieved by screwing the male thread carved on the outer periphery of the pipe (4) with the pipe joint (3),
9) and the pipe joint (3) are joined by an appropriate method depending on the material of the pipe, such as adhesion.

FIG. 3 shows a second embodiment of the water pipe piping structure according to the present invention.

In this embodiment, a T-joint branched into three directions is used as the pipe joint (3), and in this embodiment, one joint portion σω is a different diameter T-joint having a smaller diameter than the remaining joint portion σDαυ.

Of course, the joint part α0) is made larger in diameter, and the joint part aDaυ
The diameter may be smaller than this.

A lead pipe (1) is connected to the joint part aω of this pipe joint (3), and a pipe other than the lead pipe (1) is connected to the joint part αυαD.
41+41 (lead pipes in this example) are joined.

A ring-shaped collar (5) is formed at the end of the lead pipe (1),
Further, a male screw member (2) (similar to the first embodiment) is inserted through the outer periphery of the lead pipe (1).

A beam 0z is interposed between the male screw member (2) and the collar (5), and a packing (lJ) is interposed between the collar (5) and the flange inside the pipe joint (3).

In addition, in this example, as mentioned above, the joint part α1) (11)
A lead pipe (a lead pipe with a larger diameter than the lead pipe (1)) is joined to the other pipe +4) (4), and the manner of joining is the same as that of the joint portion 10) and the lead pipe (1).

Next, the construction method of the piping structure according to the second embodiment will be explained with reference to FIGS. 4(A) and 4(B).
1), on the outer periphery of the other tube +41 (4)
1 (9) and leaf ■.

After this, the flange shaper αG and the tamping pin σ force are applied to the end of the container (1) (4) (4+) to the flange (5) (61 (6
) to form.

Screw together the male threaded member (2) on the outer periphery of the lead pipe (1) and the joint plate of the pipe joint (3), and then screw the other pipe (4)
Male thread member (9) on the outer periphery of (9) and joint part 0υ0υ
and screw them together.

At this time, the container pipe (1) (4) +4) and the pipe joint (3
) is interposed between the inner flange and the inner flange.

In this example, whether a lead pipe is used as the other pipe (41), a pipe made of a material other than lead may be used as in the first embodiment. The pipe is a lead pipe (111) [1], and the small diameter joint part aω
The pipe to be joined to this lead pipe (the other pipe other than 11(1))
4) (not shown).

FIG. 5 shows a third embodiment of a water pipe piping structure according to the present invention.

In this embodiment, the other pipe (4) facing the lead pipe (1) has the same diameter as this lead pipe (1), and the pipe joint (3) also has its joint part (141aa) or a socket with the same diameter. Joints are used.

The joint structure between the lead pipe (1) and the pipe joint (3) in this embodiment is the same as in the first and second embodiments.

Further, in this example, although the other pipe (4) is a lead pipe, it is also possible to use a pipe other than a lead pipe as in the previously described embodiments.

The construction method of the water pipe piping structure according to the third embodiment is the same as that of the first and second embodiments.
+ +21 and leaf σ'ba'b in container tube (11 (4
), see Figure 6 (A)), tube (1) +
At the end of 41, form a tsuba (151).
), after this, the joint part α of the pipe joint (3) is
into the male threaded member (21+21) (tube (1) (
4) A patchkin a3 is interposed between the tsuba 0909).

(Effects of the Invention) The present invention comprises a plurality of water pipes, a male threaded member, and a pipe joint, and at least one of the water pipes is a lead pipe,
A ring-shaped collar is formed at the end of the lead pipe, a male thread member is inserted through the outer periphery of the lead pipe, at least one joint part of the pipe joint is screwed into the male thread member on the outer periphery of the lead pipe, and the remaining part is screwed into the male thread member on the outer periphery of the lead pipe. A piping structure of a water pipe in which the joint part is joined to a pipe other than the lead pipe, and a male screw member is inserted in advance into the outer periphery of the lead pipe, a ring-shaped collar is formed at the end of the lead pipe, and a ring-shaped collar is formed at one end of the pipe joint. the joint portion is screwed into the male threaded member by sandwiching the flange;
Since this is a construction method for a water pipe piping structure in which the remaining joint portion is joined to a pipe other than the lead pipe, the following effects are achieved.

In other words, when installing water pipes, if at least one of the water pipes is a lead pipe, a ring-shaped collar is formed at the end of the lead pipe and connected to the pipe joint, so the lead pipe It has superior strength compared to having a trumpet-shaped end.

Since the lead pipe and the pipe joint are joined by screwing without using solder, piping work can be performed safely, reliably, and quickly without requiring any skill.

Further, according to the present invention, the other pipe connected to the lead pipe via the pipe joint may have the same diameter as the lead pipe or a different diameter, or may be made of a material other than lead, and is highly versatile.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a first embodiment of a water pipe piping structure according to the present invention, FIGS. 2(A) to (D) are cross-sectional views showing each step of the construction method of the same piping structure, and FIG. is a sectional view of the second embodiment of the water pipe piping structure according to the present invention, and FIG.
) (B) is a cross-sectional view showing each process of the construction method of the above piping structure, and FIG.
A sectional view of the embodiment, FIGS. 6(A) and 6(B) are sectional views showing each process of the construction method of the above piping structure, and FIG. 7(A) is a perspective view of a flange shaper for forming a flange on a lead pipe. , FIG. 7(B) is a perspective view showing the usage state of the same collar part shaping device, and FIG. 8 is a sectional view showing a conventional pipe joint structure. (1)...Lead pipe (2)...Male thread member (3
)...Pipe fitting (4)...Other pipe (5) (
6) (13... Tsuba GO + (11) αΦ river joint part No. (B) Fig. (C) (D) No. 1 (B) Fig. (A)

Claims (2)

[Claims] (1) Consisting of multiple water pipes, male thread members, and pipe joints,
At least one of the water pipes is a lead pipe, a ring-shaped collar is formed at the end of the lead pipe, a male screw member is inserted through the outer periphery of the lead pipe, and at least one joint portion of the pipe joint is connected to the pipe. A water pipe piping structure in which a male threaded member on the outer periphery of a lead pipe is screwed, and the remaining joint part is joined to a pipe other than the lead pipe. (2) A male thread member is inserted into the outer periphery of the lead pipe in advance, a ring-shaped collar is formed at the end of the lead pipe, and one joint part of the pipe joint is screwed into the male thread member by sandwiching the collar, A construction method for a water pipe piping structure in which the remaining joint portion is joined to a pipe other than the lead pipe.