JP3345846B2 - Rising section construction unit for indoor double piping - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rising unit for an indoor double pipe.

[0002]

2. Description of the Related Art Recently, a double pipe in which a plastic main pipe is housed in a sheath pipe made of a plastic corrugated flexible pipe has been used as an indoor water supply pipe.

The structure of the rising portion of the double pipe will be described with reference to FIGS. First, as shown in FIG. 16, a sheath tube 13 is laid along a predetermined route on a foundation floor (concrete slab or the like) 11 of a building before a floor plate is stretched. Next, a rising guide pipe 15 is connected to an end of the sheath pipe 13 by a nut-shaped connecting member 17 at a position where the pipe is raised. afterwards,
The rising guide tube 15 is fixed to a predetermined position on the base floor 11 by a fixing bracket 19.

In this state, a floor plate 21 is stretched as shown in FIG. A hole 23 is previously formed in the floor plate 21 at a position corresponding to a rising portion of the rising guide tube 15. Since the height of the floor plate 21 from the base floor 11 often differs depending on the building, the rising portion of the rising guide tube 15 is made vertical and longer to cope with a change in the height of the floor plate 21. Therefore, in a normal case, the upper end of the rising guide tube 15 projects from the upper surface of the floor plate 21. Thereafter, the protruding portion of the rising guide tube 15 is cut, and as shown in FIG.
Align the upper end of 15 with the upper surface of floorboard 21.

As a result, the sheath pipe 13 is placed between the base floor 11 and the floor plate 21. Next, as shown in FIG. 19, the main pipe 25 is inserted into the sheath pipe 13 and the rise guide pipe 15. Then, the main pipe 25 is laid. At this stage, the end of the main pipe 25 is drawn out of the rising guide pipe 15, and thereafter, the floor-fitting pipe joint 27 is attached to the end of the main pipe 25. Next, as shown in FIG. 20, the end of the main pipe 25 is pushed into the rising guide pipe 15, and the flange portion 29 of the floor fitting 27 is fixed to the floor plate 21 with screws.

[0006] Thus, the piping work of the plastic double pipe is completed. Thereafter, the metal pipe 31 rising from the floor surface and the like are connected to the floor-fitting type pipe joint 27.

[0007] The above is a case where a double pipe is laid between the base floor and the floor plate. Similarly, a double pipe may be laid between the base wall and the wall plate.

[0008]

As shown in FIG. 20, the rising portion of the indoor double pipe constructed as described above is provided on the base floor.
There is no problem if the height H of the floor plate 21 from 11 is higher than a certain level. However, as shown in FIG. 21, when the height H of the floor plate 21 from the base floor 11 becomes low, a floor fitting 27 is attached to the end of the main pipe 25, and the end of the main pipe 25 is connected to the rising guide pipe 15.
When pushed into the main pipe 25, the main pipe 25 is strongly bent at the mouth A of the pipe joint 27 due to the rigidity of the main pipe 25. For this reason, an excessive force is applied to the connection between the main pipe 25 and the pipe joint 27, and there is a possibility that water leakage or the like may occur during long-term use.

[0009] Such a problem arises when a double pipe is piped between a foundation wall and a wall plate. In this case, the height of the wall plate from the foundation wall (in this case, the horizontal distance, but the relationship between the foundation floor and the floor plate). This also occurs when the “height” is low).

[0010]

SUMMARY OF THE INVENTION The present invention provides an indoor double-pipe riser construction unit which solves the above-mentioned problems, and which comprises a foundation wall or floor and a floorboard or wallboard. A double-pipe riser construction unit to be piped between, having a connection part of a double-pipe sheath pipe on one end side, and a floor plate or wall plate from a base floor or foundation wall on the other end side. A rising guide tube having a rising portion rising in the hole, a fixing member for fixing the rising guide tube to a foundation floor or a foundation wall, and a connecting portion of a double-pipe main pipe on one end side and a mating member on the other end side. A pipe joint having a pipe connection,
The rising portion of the rising guide pipe is formed in a straight tubular shape at a constant obtuse angle with respect to the axial direction of the sheath pipe connecting portion, and the main pipe connecting portion of the pipe joint is formed of a rising portion of the rising guide pipe. It is formed obliquely in accordance with the inclination, and a fitting portion that fits into an end of the rising portion of the rising guide tube is formed at the base of the main pipe connection portion. .

[0011]

According to the above construction, since the rising portion of the rising guide tube is slanted, the degree of bending of the main tube in the rising guide tube can be relaxed, and the end of the main tube is inclined. Since it is connected to the pipe joint as it is, even if the height of the floor plate (or wall plate) from the base floor (or the base wall) is low, the main pipe is not strongly bent at the mouth of the pipe joint. In addition, since the rising portion of the rising guide tube is a straight tube having a constant inclination angle, the pipe joint is fitted in the same state regardless of the cutting position at any position according to the height of the floor plate (or wall plate). be able to.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show a rising portion of an indoor double pipe using a construction unit according to an embodiment of the present invention in accordance with a construction order, and FIG. 5 shows a rising portion of a completed indoor double pipe.

First, the structure of the rising guide tube 15 will be described with reference to FIG. This rising guide tube 15 has a male thread portion for connecting the sheath tube 13 to one end side with a nut-shaped connecting member 17.
Rising part having 15a and rising from the base floor 11 on the other end side
15b. The rising portion 15b is formed in a straight tubular shape at a constant oblique angle with respect to the axial direction of the sheath tube connecting portion. The inclination angle of the rising portion 15b with respect to the axial direction of the sheath tube connecting portion is preferably in the range of 120 ° to 150 °, and the example shown is 135 °. Further, the upper end of the rising guide tube 15 is closed by a sealing portion 15c. If the upper end is closed, there is an advantage that foreign matter such as dust does not enter the rising guide tube 15 during construction.

The rising guide tube 15 is preferably made of a soft resin so that it can be cut with a cutter knife or the like. In this embodiment, low-density polyethylene is used. The thickness of the rising guide tube 15 is preferably in the range of 0.5 to 3.0 mm in consideration of both the self-shape retention and the cutability, and was 2.0 mm in this embodiment. The rising guide tube 15 having the above structure can be manufactured by blow molding.

The rising guide tube 15 is integrally provided with a fixing member 33 for fixing the rising guide tube 15 to the base floor 11. The fixing member 33 is made of resin, and has a cylindrical portion 33a surrounding the bent portion of the rising guide tube 15, and a bottom plate portion 33b. FIG. 7 shows a bottom surface in a state where the rising guide tube 15 and the fixing member 33 are integrated. Notch portions 35 for screwing are formed on both sides of the bottom plate portion 33b.

In the fixing member 33 having the above-mentioned shape, a mold for molding the fixing member is set so as to surround the bent portion of the rising guide tube 15, and a two-liquid mixed-curable resin material is placed therein. It can be formed by injecting and curing. Fixing member 33
It is preferable to use a hard resin having good adhesiveness to the rising guide tube 15 and having a mechanical strength necessary for fixing to the base floor 11. When the rising guide tube 15 is made of low-density polyethylene, the material of the fixing member 33 may be polynorbornene (an open-ring polymer of a norbornene-based monomer). When the rising guide tube 15 and the fixing member 33 are integrated as described above, the work of fixing the rising guide tube 15 to a foundation floor or the like becomes easy.

At the time of construction, first, the rising guide tube 15 with the fixing member 33 configured as described above is attached to the foundation floor.
It is fixed to a predetermined position of 11 with a screw 37. Next, the end of the sheath tube 13 laid on a predetermined route is connected to the rising guide tube 15 by the connecting member 17.

In this state, the floor plate 21 is stretched as shown in FIG. The rising portion 15b of the rising guide tube 15 is previously provided on the floor plate 21.
A hole 23 is formed at a position corresponding to. Rising part 15b
Is made longer so as to be able to cope with a change in the height of the floor plate 21, and when the floor plate 21 is stretched, the upper end of the rising portion 15 b projects from the upper surface of the floor plate 21. Therefore, the rising portion 15b is cut with a cutter knife or the like so that the upper end thereof is at the same level as the upper surface of the floor plate 21.

Next, as shown in FIG. 3, the main pipe 25 is inserted into the sheath pipe 13 and the rising guide pipe 15, and the main pipe 25 is laid. At this stage, the end of the main pipe 25 is drawn out of the rising guide pipe 15, and thereafter, an obtuse elbow type pipe joint 39 is attached to the end of the main pipe 25.

This pipe joint 39 has a structure as shown in FIGS. 8A to 8D, and connects a mechanical main pipe connecting portion 41 for connecting a resin main pipe 25 to a metal pipe to be connected. And a mating pipe connecting portion 43 of a screw type. The main pipe connecting part 41 is formed obliquely in accordance with the inclination of the rising part 15 b of the rising guide pipe 15, and the mating pipe connecting part 43 is formed so as to be perpendicular to the upper surface of the floor plate 21. That is, in the illustrated example, the main pipe connection part 41 is
It is formed at an angle of °.

In the pipe joint 39, a fitting part 45 is formed at the base of the main pipe connecting part 41 so as to fit to the upper end of the rising guide pipe 15. The fitting portion 45 is a cylindrical surface having the same central axis as the main pipe connecting portion 41, and its outer diameter is slightly smaller than the inner diameter of the rising portion 15b of the rising guide tube 15. In addition, the fitting 39 includes a flange portion 47 for preventing the rising guide tube 15 from falling into the rising portion 15b, a wrench hooking portion 49, a male screw portion 51 for screwing a holding nut described later, and a blind plate and a surface described later. An elliptical flat portion 53 and the like that are in contact are formed. The material of the pipe joint 39 is, for example, BC6 of JIS B 5111 (bronze casting) or C3604 of JIS H 3250 (copper and copper alloy rod).

After fitting the pipe joint 39 to the end of the main pipe 25, the end of the main pipe 25 and the pipe joint 39 are pushed into the rising guide pipe 15 as shown in FIG. The joint 45 is fitted to the upper end of the rising guide tube 15. When pushed to the end, the elliptical flat portion 53 of the pipe joint 39 is at the same level as the upper surface of the floor plate 21.

Next, a hole between the floor plate 21 and the rising guide tube 15
Set the blindfold plate 55 to cover 23. As shown in FIG. 9, the blind plate 55 is rectangular, has an opening 57 large enough to receive the flange 43 of the pipe joint 39, and has screw holes 59 at four corners. The size of the opening 57 is smaller than the major axis of the elliptical flat portion 53 of the pipe joint 39. The thickness of the blind plate 55 is the same as or slightly larger than the thickness of the flange 47 of the pipe joint 39.

After setting the blind plate 55, the clamping nut 61 is screwed into the male thread portion 51 of the pipe joint 39 and tightened as shown in FIG. FIG. 10 shows a plan view of the holding nut 61. The fitting 39 is turned into the blind plate 55 by tightening the holding nut 61.
Fixed to Then, screw the four corners of the blindfold plate 55
It is fixed to the floor plate 21 by 63. Thus, the rising portion of the indoor double pipe of this embodiment is completed.

With such a structure, the rising guide tube
Since the rising portion 15b of 15 is slanted, the degree of curvature (curvature) of the main pipe 25 in the rising guide pipe 15 can be reduced, and the main pipe connecting portion 41 of the pipe joint 39 can be connected to the rising guide. tube
Since the main pipe 25 is slanted in accordance with the inclination of the rising portion 15b of the pipe 15, the main pipe 25 is not strongly bent at the mouth of the pipe joint 39, and the long-term reliability of the connection portion is improved.

After completion, as shown in FIG. 6, a covering material 65 is put on the floor plate 21 and the blind plate 55, and the metal pipe 31 is screwed into the mating pipe connecting portion 43 of the pipe joint 39, and further connected. Wanza 67 is covered to cover the part.

FIGS. 11 to 13 show another example of the rising guide tube 15 and the fixing member 33 constituting the construction unit of the present invention. This rising guide pipe 15 has a short straight pipe section 15 at the bend.
This is different from that of the previous embodiment in that d is formed and that a mark 69 indicating the height level is attached to the rising portion 15b. The fixing member 33 is formed by bending a metal plate, and has a structure in which a short straight pipe portion 15d of the rising guide pipe 15 is fastened by a bolt 71. Rising guide tube 15
Since other structures are the same as those of the above embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.

FIGS. 14A to 14D show another example of the pipe joint 39 constituting the construction unit of the present invention. This pipe fitting 39
8 is different from the pipe joint shown in FIG. 8 in that a screw hole 73 for screwing the blind plate is formed in the elliptical flat portion 53 in order to fix the blind plate to the blind plate without using a holding nut. 47 is a square. In this case, a hole corresponding to the screw hole 73 and a flange
It is necessary to form a rectangular hole into which 47 fits. In this way, by fixing the blind plate to the floor plate, it is possible to prevent the pipe joint 39 from rotating when the metal pipe 31 is connected to the mating pipe connecting portion 43. Since other structures are the same as those of the above-described embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.

FIG. 15 shows another example of a rising guide pipe constituting the construction unit of the present invention. This rising guide tube 15
In the figure, a vertical rising portion 15e is further formed at the tip of the rising portion 15b formed diagonally. Such a rising guide tube 15 is effective when the height of the floor plate is very high. Since the height of the floorboard is high, when the vertical rising portion 15e is cut, a conventional pipe joint 27 as shown in FIG. 19 may be used.

In each of the above embodiments, the case where a double pipe is connected between the base floor and the floor plate has been described. However, the present invention is similarly applied to the case where a double pipe is connected between the base wall and the wall plate. You can do it.

[0031]

As described above, according to the present invention, the degree of bending of the main pipe in the riser guide pipe is reduced, and the main pipe connection part of the pipe joint is substantially in the same direction as the end of the main pipe. Since it is oriented, even if the height of the floor plate (or wall plate) from the base floor (or base wall) is low, the main pipe is not forcibly bent at the mouth of the pipe joint. Therefore, the long-term reliability of the connection between the main pipe and the pipe joint is improved, and there is no possibility that water leakage or the like occurs. In addition, since the rising portion of the rising guide tube is a straight tube with a constant inclination angle, it can be used as a floor plate (or wall plate).
The pipe joint can be fitted in the same state no matter where the pipe joint is cut in accordance with the height of the pipe joint.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first stage of assembling a rising portion of an indoor double pipe using a construction unit according to one embodiment of the present invention.

FIG. 2 is a sectional view showing the next stage of FIG. 1;

FIG. 3 is a sectional view showing the next stage of FIG. 2;

FIG. 4 is a sectional view showing the next stage of FIG. 3;

FIG. 5 is a sectional view showing a completed state of a rising portion of an indoor double pipe using the construction unit according to one embodiment of the present invention.

FIG. 6 is a sectional view showing a state in which a metal pipe rising from the floor is connected to a rising portion of the indoor double pipe of FIG. 5;

FIG. 7 is a bottom view showing the rising guide tube and the fixing member in FIG. 1;

8A is a front view of the pipe joint in FIG. 3,
(B) is a plan view, (C) is a bottom view, and (D) is a left side view.

FIG. 9 is a plan view of the blind plate in FIG. 4;

FIG. 10 is a plan view of the holding nut in FIG. 4;

FIG. 11 is a front view showing another example of the rising guide pipe and the fixing member that constitute the construction unit of the present invention.

FIG. 12 is a bottom view of the rising guide tube and the fixing member of FIG. 11;

FIG. 13 is a right side view of the fixing member in FIG. 11;

14A and 14B show another example of the pipe joint constituting the construction unit of the present invention, wherein FIG. 14A is a front view, FIG.
(C) is a bottom view, and (D) is a left side view.

FIG. 15 is a cross-sectional view showing still another example of a rising guide tube and a fixing member constituting the construction unit of the present invention.

FIG. 16 is a front view showing a first stage of assembling a rising portion of a conventional indoor double pipe.

FIG. 17 is an exemplary front view showing the next stage in FIG. 16;

FIG. 18 is an exemplary front view showing the next stage of FIG. 17;

FIG. 19 is a sectional view showing a step subsequent to FIG. 18;

FIG. 20 is a sectional view showing a completed state of a rising portion of a conventional indoor double pipe.

FIG. 21 is a sectional view showing a problem of a rising portion of a conventional indoor double pipe.

[Explanation of symbols]

 11: foundation floor 13: sheath pipe 15: rising guide pipe 15b: rising section 21: floor plate 23: hole 25: main pipe 31: metal pipe (counter pipe) 33: fixing member 39: pipe joint 41: main pipe connection section 43 ： Material connection part 45 ： Mating part 55 ： Blind plate 61 ： Clamp nut

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 5/00 F16L 1/00 F16L 43/00

Claims (3)

(57) [Claims] Claims: 1. A double-pipe rising section construction unit to be piped between a foundation wall or a foundation floor and a floor panel or a wall panel, comprising a double-pipe sheath connection on one end side, A rising guide tube having a rising portion rising from a base floor or a base wall into a hole of a floor plate or a wall plate on the other end side, a fixing member for fixing the rising guide tube to a base floor or a base wall, and a double pipe on one end side And a pipe joint having a connection part of a mating pipe on the other end side, wherein the rising part of the rising guide pipe has a constant inclination at an obtuse angle with respect to the axial direction of the sheath pipe connection part. The main pipe connection part of the pipe joint is formed obliquely in accordance with the inclination of the rising part of the rising guide pipe, and a rising guide pipe is formed at the base of the main pipe connection part. A fitting portion that fits into the end of the rising portion of , Rising portion construction units of indoor double pipe, characterized in that. 2. The indoor double pipe rising section construction unit according to claim 1, further comprising a blind plate closing a hole between a floor plate or a wall plate and the rising guide pipe, wherein the pipe joint is connected to the blind plate. The blind plate has a fixing portion to a floor plate or a wall plate. 3. The unit for constructing a rising portion of an indoor double pipe according to claim 1, wherein the rising guide tube and the fixing member are integrated, and the rising guide tube is made of a soft resin which is easy to cut. The fixing member is made of a hard resin which secures the fixing member to the foundation floor or the foundation wall.