JP6859060B2 - Piping support structure - Google Patents

Description

The present invention relates to a pipe support structure .

A pipe fixture is used to fix a pipe to a building (see, for example, Patent Document 1).
The pipe fixture is fixed to the building with the pipe clamped.

Japanese Unexamined Patent Publication No. 2006-283814

However, when the outer periphery of the resin pipe is clamped and fixed by the conventional pipe fixture, there is a risk that the resin pipe and the pipe fixture may be misaligned when the resin pipe is thermally expanded or contracted.
When the resin pipe clamped to the pipe fixture undergoes thermal expansion and contraction and the position shift occurs between the resin pipe and the pipe fixture, the resin pipe is largely displaced in the longitudinal direction due to repeated thermal expansion and contraction, and the building There was a misplacement of the resin piping. Then, due to improper placement of the resin pipe, there is a risk that the upper end of the resin pipe may come into contact with the ceiling of the building, or deformation or stress may be concentrated on the end or the branch of the branch pipe.

The present invention has been made in view of the above circumstances, even if the thermal expansion occurs can be suppressed longitudinal positional deviation of the resin pipe, capable of preventing a bad arrangement for a building of the resin pipe tube support The purpose is to provide a structure.

In order to solve the above object, the resin pipe joint of the present invention includes a holding portion held by a pipe holding member fixed to a building in a joint that accommodates and connects the ends of a plurality of resin pipes. The holding portion is characterized in that a recess along the circumferential direction into which the pipe holding member is fitted is formed by a straight pipe portion and enlarged diameter portions on both ends.

According to the present invention, since the joints that accommodate and connect the ends of the plurality of resin pipes are held by the holding parts by the pipe holding members fixed to the building, a plurality of joints are connected at the positions of the resin pipe joints. The resin pipe can be fixed in a predetermined position with respect to the building.
Further, the holding portion is formed with a recess along the circumferential direction by the straight pipe portion and the enlarged diameter portions on both ends, and the pipe holding member can be fitted into the recess. Therefore, if the resin pipe joint is held by the pipe holding member having a width corresponding to the straight pipe portion, the resin pipe joint can be held stably, and the enlarged diameter portion and the pipe holding member can be locked in the axial direction in that state. As a result, it is possible to prevent a plurality of connected resin pipes from being displaced in the longitudinal direction, and even if the resin pipe is thermally expanded or contracted after the pipe is installed, the position of the resin pipe is prevented from being displaced in the longitudinal direction. It is possible to prevent improper placement of the plastic.
Moreover, if a pipe holding member having a size corresponding to the recess of the resin pipe joint is used, the resin pipe can be supported and fixed to the building simply by fitting the pipe holding member into the recess of the resin pipe joint. Workability at the construction site is improved.
Therefore, it is possible to provide a resin pipe joint that can suppress the displacement of the resin pipe in the longitudinal direction even if thermal expansion and contraction occurs, and can prevent the resin pipe from being improperly arranged with respect to the building.

The resin pipe joint of the present invention may be characterized in that it is provided with an electric heat fusion mechanism having a terminal portion and can be fused with the end portion of the resin pipe by energization.
According to such a resin pipe joint, since it can be fused with the end of the resin pipe by energization, it is not necessary to rotate the resin pipe and the joint relative to each other at the time of connection. Therefore, when connecting a plurality of resin pipes, the orientation of the resin pipe joint can be easily adjusted, the terminal portion and the recess can be easily arranged at a desired position, and the workability at the piping site can be improved.

The resin piping joint of the present invention may be characterized in that the recess is formed in an annular shape over the entire length in the circumferential direction of the holding portion.
According to such a resin pipe joint, since the pipe holding member surrounds and fits in the recess formed in an annular shape, it is easy to hold the resin pipe joint with a sufficient holding force by the pipe holding member.

In the pipe support structure of the present invention, the pipe is arranged through the through hole formed in the floor slab of the building, and the resin according to any one of the above is arranged in the vicinity of the through hole in the pipe. A pipe joint and a pipe holding member that is fitted into the recess and is supported and fixed to the floor slab to hold the position of the resin pipe joint with respect to the floor slab regardless of thermal expansion and contraction of the pipe. It is characterized by having.

According to the present invention, in order to support and fix the resin pipe to the floor slab of the building by using the resin pipe joint described above, a plurality of resin pipes connected at the position of the resin pipe joint are fixed at a predetermined position with respect to the building. can do.
Further, the holding portion of the resin pipe joint is formed with a recess along the circumferential direction by the straight pipe portion and the enlarged diameter portions on both ends, and the pipe holding member can be fitted into the recess. As a result, if the resin pipe joint is held by the pipe holding member having a width corresponding to the straight pipe portion, the resin pipe joint can be stably held, and in that state, the enlarged diameter portion and the pipe holding member can be locked in the axial direction. As a result, it is possible to prevent a plurality of connected resin pipes from being displaced in the longitudinal direction, and even if the resin pipe is thermally expanded or contracted after the pipe is installed, the position of the resin pipe is prevented from being displaced in the longitudinal direction, and the resin pipe building. It is possible to prevent improper placement of the plastic.
Moreover, if a pipe holding member having a size corresponding to the recess of the resin pipe joint is used, the resin pipe can be supported and fixed to the building simply by fitting the pipe holding member into the recess of the resin pipe joint. Good workability at the piping site.
Therefore, it is possible to provide a pipe support structure capable of suppressing the displacement of the resin pipe in the longitudinal direction even if thermal expansion and contraction occurs and preventing improper placement of the resin pipe with respect to the building.

According to the present invention, a joint that accommodates and connects the ends of a plurality of resin pipes is held by the holding portion by a pipe holding member fixed to the building. Therefore, a plurality of resin pipes connected at the positions of the resin pipe joints can be fixed at a predetermined position with respect to the building.
Further, the holding portion is formed with a recess along the circumferential direction by the straight pipe portion and the enlarged diameter portion, and the pipe holding member can be fitted into the recess. Therefore, if the straight pipe portion is held by the pipe holding member having a width corresponding to the straight pipe portion, the resin pipe joint can be stably held, and the enlarged diameter portion and the pipe holding member can be locked in the axial direction in that state. ..
As a result, it is possible to prevent a plurality of resin pipes connected to the resin pipe joint from being displaced in the longitudinal direction, and even if the resin pipe is thermally expanded or contracted after the pipe is installed, the position of the resin pipe is prevented from being displaced in the longitudinal direction. It is possible to prevent the occurrence of improper placement with respect to the building.
Moreover, by connecting a plurality of resin pipes to the resin pipe joint and fitting the pipe holding member into the recess, the resin pipe can be supported and fixed to the building, so that workability at the construction site is improved.
Therefore, it is possible to provide a resin pipe joint and a pipe support structure that can suppress the displacement of the resin pipe in the longitudinal direction even if thermal expansion and contraction occur, and can prevent the resin pipe from being improperly arranged with respect to the building.

It is a partial front view which shows the piping using the resin piping joint which concerns on 1st Embodiment of this invention. It is a front view which shows the joint for resin piping which concerns on 1st Embodiment of this invention. It is a perspective view which shows the pipe support structure using the resin pipe joint which concerns on 1st Embodiment of this invention. A pipe support structure using a resin pipe joint according to the first embodiment of the present invention is shown, (a) is a front view (partial cross-sectional view), and (b) is a side view (partial cross-sectional view). It is a front view which shows the modification of the flange part of the pipe holding member which concerns on 1st Embodiment of this invention. It is a front view which shows the joint for resin piping which concerns on 2nd Embodiment of this invention. It is a front view which shows the joint for resin piping which concerns on 3rd Embodiment of this invention.

(First Embodiment)
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a diagram showing a pipe (vertical pipe) using the piping joint of the present embodiment, FIG. 2 is a diagram showing a resin piping joint of the present embodiment, and FIGS. 3 and 4 are for resin piping of the present embodiment. It is a figure which shows the pipe support structure using a joint.

In the building 10 shown in FIG. 1, a pipe (vertical pipe) 20 is provided so as to vertically penetrate a plurality of floor slabs 11. The pipe 20 is used, for example, for a hot water pipe or a cold water pipe of an air conditioner.
The pipe 20 is configured by vertically connecting a plurality of resin pipes 21 extending in the vertical direction. Resin pipes 21 are connected to the upper and lower ends of the pipe 20 in the lateral direction (horizontal direction) via the elbow 23. Further, a T-shaped joint 24 is provided in the middle portion of the pipe 20, for example, a resin pipe 21 branched from the pipe 20 is connected in the lateral direction in the ceiling of each floor. The outer peripheral surface of the pipe 20 is covered with the heat insulating material 25.
In the pipe 20 of the present embodiment, resin pipes 21 and 21 adjacent to each other in the vertical direction are connected by using a specific resin pipe joint 30, and the position of the lowermost floor slab 11 and the uppermost floor slab 11 are connected. It is supported and fixed to the building 10 by the pipe support structure 40 provided at the position.

As the resin pipe 21 of the present embodiment, for example, a polyethylene pipe, a polybuden pipe, a polypropylene pipe, a vinyl chloride pipe, a cross-linked polyethylene pipe, a polypropylene composite pipe, a polyethylene composite pipe, or the like can be used. Polypropylene composite pipes and polyethylene composite pipes can be pipes having an oxygen barrier layer for preventing rust in the pipes inside the air conditioner, a fiber reinforced layer for suppressing thermal expansion and contraction, and the like, and ethylene is used as the oxygen barrier layer. Examples of the vinyl alcohol copolymer (EVOH) resin and aluminum, and examples of the fiber reinforcing layer include resins such as polyethylene and polypropylene containing glass fibers and carbon fibers. The structure of the polypropylene composite tube and the polyethylene composite tube includes an oxygen barrier layer, an adhesive layer for adhering the oxygen barrier layer and the resin layer in order from the surface layer, a resin layer to be fused with an electrothermal fusion joint described later, and fiber reinforced plastic. A structure in which a layer and a resin layer are laminated can be mentioned, and the resin used for the resin layer and the fiber reinforced layer preferably contains the same resin material.

As shown in FIG. 2, the resin piping joint 30 of the present embodiment includes a straight pipe portion 32 having a small diameter and a diameter-expanded portion 33 provided on both ends in the axial direction and having a diameter larger than that of the straight pipe portion 32. ing. By providing the large-diameter enlarged diameter portions 33 on both sides of the small-diameter straight pipe portion 32, the concave portions 35 having a concave shape at the position of the straight pipe portion 32 are continuously formed in an annular shape along the circumferential direction. .. The recess 35 is configured as a holding portion 31 of the pipe holding member 45, which will be described later.

Inside the resin piping joint 30, a penetrating portion 36 penetrating in the axial direction is formed. Both ends of the penetrating portion 36 are formed in a size capable of accommodating the end portions of the resin pipe 21 and fitting the end portions of the resin pipe 21.

Electric heat fusion mechanisms 37 are provided on both ends of the resin piping joint 30. The electric heat fusion mechanism 37 includes a heating coil 37a embedded in both ends of the resin piping joint 30, and a terminal portion 37b connected to the heating coil 37a and projected from the outer peripheral surface of the resin piping joint 30. , Have.
When the terminal portion 37b is energized with the end portion of the resin pipe 21 accommodated in the penetrating portion 36, the inner circumference on both ends of the penetrating portion 36 and the end portion (outer peripheral surface) of the resin pipe 21 are softened and melted. It is configured to be fused to each other.

In order to manufacture such a resin piping joint 30, for example, a half body (single receiving short pipe) 38 divided in a direction orthogonal to the axial direction at an intermediate position in the axial direction as shown by a two-dot chain line in FIG. Can be manufactured by preparing a pair of the above and fusing the pair of halves 38, 38.
The half body (single receiving short pipe) 38 is formed by injection molding a part of the straight pipe portion 32 on one side in the axial direction and the enlarged diameter portion 33 on one side in a state where the inside penetrates in the axial direction. To make. At this time, the heating coil 37a is embedded in the diameter-expanded portion 33 side, and the terminal portion 37b is formed in a protruding state.
Then, the straight pipe portions 32, 32 of the pair of manufactured halves 38, 38 are opposed to each other, for example, the ends are heated and melted by a heater or the like, and the ends are crimped and cooled to be integrated (bat). Can be fused) and manufactured. It is preferable that the butt fusion portion 39 formed by the butt fusion is finished as a flat surface by scraping the bulging portion raised from the surface of the straight pipe portion 32 by an appropriate cutting means.

As shown in FIGS. 3 and 4, the pipe support structure 40 using the resin pipe joint 30 of the present embodiment is arranged adjacent to each other in the vertical direction through the through hole 12 of the floor slab 11, 21 and 21 resin pipes. A resin piping joint 30 for connecting the above, a pedestal 41 supported and fixed to the floor slab 11 near the through hole 12, and a pipe holding member 45 fixed to the gantry 41 to hold the holding portion 31 of the resin piping joint 30. , Is equipped.

The gantry 41 is arranged so as to surround the through hole 12, and includes a frame member 43 supported and fixed to the floor slab 11. The gantry 41 is configured so that the frame members 43 can be arranged in a plurality of stages according to the height at which the resin piping joint 30 is arranged. The frame member 43 at the top of the gantry 41 is arranged on both sides of the resin piping joint 30, and the pipe holding member 45 is bridged and fixed by the fixing portions 46 provided on the frame members 43 and 43.

The pipe holding member 45 is configured to be fitable to the holding portion 31 (recessed portion 35) of the resin piping joint 30, and has a band portion 47 that surrounds and holds the straight pipe portion 32 and both upper and lower bands in the width direction of the band portion 47. It has a flange portion 48 that is arranged on the edge and abuts on the stepped portion 33a between the enlarged diameter portion 33 and the straight pipe portion 32.

The band portion 47 is composed of a plurality of band pieces 47a made of thin-walled strips, and each band piece 47a is formed with a concave shape corresponding to the shape of the straight pipe portion 32 of the resin piping joint 30. A plurality of band pieces 47a are combined and fastened so as to surround and sandwich the straight pipe portion 32 due to the concave shape. Both ends of the band portion 47 are fixed to the fixing portions 46 formed on the frame member 43 of the gantry 41.

The flange portion 48 is divided and provided corresponding to the band piece 47a, and is provided on both the upper and lower edges of each band piece 47a. The flange portion 48 has a ring shape in which the band piece 47a is combined so as to surround the straight pipe portion 32 so as to be in contact with the outer surface of the step portion 33a between the enlarged diameter portion 33 and the straight pipe portion 32. There is. By arranging the flange portion 48 between the stepped portion 33a of the resin piping joint 30 and the upper and lower edges of the band portion 47, a sufficient contact area with respect to the stepped portion 33a of the pipe holding member 45 is secured. There is.
The vertical width of the pipe holding member 45 composed of the band portion 47 and the flange portions 48, 48 on both the upper and lower sides corresponds to the vertical width of the holding portion 31 (recessed portion 35) of the resin piping joint 30. By arranging the band portion 47 and the flange portions 48, 48 on both the upper and lower sides in the recess 35, the pipe holding member 45 is fitted into the recess 35. A small gap of, for example, about 1 to 3 mm may be formed between the pipe holding member 45 and the diameter-expanded portion 33 in the fitted state. This makes it possible to regulate and prevent the vertical displacement of the resin piping joint 30 with respect to the piping holding member 45.

If the stepped portion 33a on the straight pipe portion 32 side of the enlarged diameter portion 33 is formed so as to be greatly inclined with respect to the axial direction and the contact area with respect to the pipe holding member 45 is insufficient, it is shown in FIG. As described above, a spacer 48a having an inclined surface corresponding to the inclination of the step portion 33a may be arranged on the surface of each flange portion 48 facing the step portion 33a.

In order to connect the plurality of resin pipes 21 of the pipe 20 and to support and fix the pipe 20 to the building 10 by the pipe support structure 40 using the resin pipe joint 30, the following is performed.
First, the gantry 41 is fixed around the through hole 12 of the floor slab 11. The upper end of the resin pipe 21 arranged through the through hole 12 of the floor slab 11 and the lower end of the resin pipe 21 arranged above are housed in the through portion 36 of the resin pipe joint 30, respectively, and are electrically operated. The resin pipe 21 and the resin pipe joint 30 are fused and joined by energizing from the terminal portion 37b of the heat fusion mechanism 37.
As a result, the upper and lower resin pipes 21 are connected by the resin pipe joints 30.

Further, the band portion 47 and the flange portion 48 of the pipe holding member 45 are fitted into the recess 35 (holding portion 31) of the resin piping joint 30, and the pipe holding member 45 is supported and fixed to the fixing portion 46 of the gantry 41.
In this state, the resin piping joint 30 and the piping holding member 45 are arranged above the floor slab 11. As a result, the resin pipe joint 30 can be fixed at a predetermined position with respect to the building 10, and the pipe 20 including the plurality of resin pipes 21 connected by the resin pipe joint 30 can be supported and fixed to the building 10. After that, the construction is completed by filling the through holes 12 of the floor slab 11 with mortar or the like.

According to the resin pipe joint 30 as described above, the joint that accommodates and connects the ends of the plurality of resin pipes 21 is held by the holding portion 31 by the pipe holding member 45 that is supported and fixed to the building 10. The resin pipe 21 can be supported and fixed at a predetermined position with respect to the building 10 at the position of the resin pipe joint 30.

The holding portion 31 is composed of a recess 35 formed along the circumferential direction by the straight pipe portion 32 and the enlarged diameter portions 33 on both ends, and the pipe holding member 45 is fitted into the recess 35.
Therefore, if it is held by the pipe holding member 45 having a width corresponding to the recess 35, it can be held stably, and in that state, the resin pipe joint 30 and the pipe holding member 45 can be locked in the axial direction.
As a result, it is possible to prevent the connected resin pipe 21 from trying to be displaced in the longitudinal direction, and even if the resin pipe 21 undergoes thermal expansion and contraction after the pipe is installed, the position of the resin pipe joint 30 does not change. It is possible to suppress the displacement in the longitudinal direction and prevent the resin pipe 21 from being misaligned with respect to the building 10.

For example, when a pipe 20 in which a plurality of resin pipes 21 are connected by using a resin pipe joint 30 is arranged in a building 10, if the resin pipe 21 undergoes thermal expansion and contraction, between adjacent resin pipe joints 30 and 30. It can be easily absorbed by bending the long portion of the resin pipe 21 arranged in. Therefore, both ends in the longitudinal direction in which the plurality of resin pipes 21 are connected are not significantly displaced, and the ends thereof do not come into contact with the building 10.

Moreover, if the pipe holding member 45 corresponding to the recess 35 of the resin pipe joint 30 is used, the plurality of resin pipes 21 can be formed by simply connecting the plurality of resin pipes 21 and fitting the pipe holding member 45 into the recess 35. Workability is improved because the connection and the support and fixing to the building 10 can be performed. For example, it is not necessary to select a position for holding the pipe 20 at the construction site or to form a portion that can be stably held by the pipe holding member 45, and the pipe 20 can be easily supported and fixed.

According to the resin pipe joint 30 of the present embodiment, since the resin pipe 21 can be electrically fused with the end portion of the resin pipe 21 by energization, it is not necessary to rotate the resin pipe 21 and the resin pipe joint 30 relative to each other when connecting the pipes. Therefore, when connecting the resin pipe 21 and the resin pipe joint 30, the orientation of the resin pipe joint 30 can be easily adjusted, the terminal portion 37b and the recess 35 can be easily arranged at a desired position, and workability at the construction site can be easily adjusted. Can be improved.

Further, according to the resin pipe joint 30 of the present embodiment, since the pipe holding member 45 is fitted into the annular recess 35 so as to surround the resin pipe holding member 45, the resin pipe joint 30 is sufficiently held by the pipe holding member 45. Can be held by force.

Further, according to the pipe support structure 40 as described above using the resin pipe joint 30 of the present embodiment, the resin pipe joint 30 is arranged above the floor slab 11 and is provided on both ends. The terminal portion 37b of the landing mechanism 37 is also arranged above the floor slab 11. Therefore, the connection work between each resin pipe 21 and the resin pipe joint 30 can be performed on the floor slab 11, and the workability at the time of pipe connection work is good. Further, the pipe holding member 45 can also be attached on the floor slab 11, and the safety is high.

Further, according to the pipe support structure 40, since the band portion 47 of the pipe holding member 45 is brought into contact with the straight pipe portion 32 and held, the resin pipe joint 30 is stably held by the pipe holding member 45. It is possible to ensure durability.

(Second Embodiment)
FIG. 6 is a front view showing the resin piping joint 130 according to the second embodiment.
The second embodiment is the same as the first embodiment except that the manufacturing method of the resin piping joint 130 is different.
The resin piping joint 130 has a straight pipe portion 32 that forms a penetrating portion 36 that penetrates in the axial direction and functions as a holding portion 31, and a diameter-expanded portion 33 that is located on both ends of the straight pipe portion 32. , Is integrally molded by injection molding. A heating coil 37a is embedded in the diameter-expanded portion 33 side, and a terminal portion 37b is provided so as to project.

Even the resin piping joint 130 manufactured in this way can be used in the same manner as in the first embodiment, and the same operation and effect as in the first embodiment can be obtained.
Moreover, in the present embodiment, since the resin piping joint 130 is integrally molded by injection molding, beads are not generated in the straight pipe portion 32 during manufacturing, and manufacturing is easy. Further, since the entire length of the straight pipe portion 32 is molded by a molding die, it can be molded with high dimensional accuracy. Therefore, for example, when held by the band portion 47, the band portion 47 can come into contact with the entire straight pipe portion 32, local stress is unlikely to occur, and the resin pipe joint 130 is stably held by the pipe holding member 45. Can be done.

Further, since the stepped portion 33a on the straight pipe portion 32 side of the enlarged diameter portion 33 is approximated in the direction orthogonal to the axial direction, even if the flange portion 48 of the pipe holding member 45 is formed in a flat ring shape. The flange portion 48 can be brought into surface contact with the step portion 33a.

(Third Embodiment)
FIG. 7 is a front view showing the resin piping joint 230 according to the third embodiment.
The third embodiment is the same as the first embodiment except that the manufacturing method of the resin piping joint 230 is different.
In this resin piping joint 230, a small diameter cylinder 49a and two large diameter cylinders 49b, 49b are manufactured, and the large diameter cylinders 49b, 49b are joined to both ends of the small diameter cylinder 49a by electric fusion. Manufacture.

First, the small-diameter tubular body 49a that functions as the straight pipe portion 32 is formed longer than the straight pipe portion 32. On the other hand, the large-diameter tubular body 49b that functions as the enlarged-diameter portion 33 is formed to have the same size (length) as the enlarged-diameter portion. When forming the large-diameter tubular body 49b, two sets of electric heat fusion mechanisms 37 are provided on one end side and the other end side in the axial direction, and the two heating coils 37a and 37a are embedded at different positions in the axial direction. At the same time, terminal portions 37b and 37b are provided so as to project from each other.

Next, both ends of the small-diameter cylinder 49a are inserted into the large-diameter cylinder 49b, respectively, and the terminal portion 37b of the electric heat fusion mechanism 37 provided at a position facing the small-diameter cylinder 49a of each large-diameter cylinder 49b is energized. Then, the outer circumference of the small-diameter cylinder 49a and the inner circumference of the large-diameter cylinder 49b facing each other are heated and melted to be cooled. As a result, the large-diameter cylinder 49b is joined to both ends of the small-diameter cylinder 49a, and the resin piping joint 230 can be manufactured.
In the resin piping joint 230 manufactured in this manner, the small diameter tubular body 49a constitutes the straight pipe portion 32 (holding portion 31), and each large diameter tubular body 49b constitutes the enlarged diameter portion 33.

Even the resin piping joint 230 manufactured in this way can be used in the same manner as in the first embodiment, and the same effect and effect as in the first embodiment can be obtained.
Moreover, in the third embodiment, since the small diameter tubular body 49a is formed into the straight pipe portion 32, the straight pipe portion 32 can be molded with high dimensional accuracy at the time of manufacturing. Therefore, for example, when held by the band portion 47, the band portion 47 can come into contact with the entire straight pipe portion 32, local stress is unlikely to occur, and the resin pipe joint 230 is stably held by the pipe holding member 45. Can be done.
Further, it is easy to provide the stepped portion 33a on the straight pipe portion 32 side of the enlarged diameter portion 33 in the direction orthogonal to the axial direction, and even if the flange portion 48 of the pipe holding member 45 is formed in a flat ring shape. , The flange portion 48 can be brought into surface contact with the step portion 33a.

Each of the above embodiments can be appropriately modified within the scope of the present invention.
For example, in each of the above embodiments, an example in which a plurality of resin pipes 21 arranged in the vertical direction are connected by resin pipe joints 30 (130, 230) has been described, but the resin pipes 21 are arranged in the horizontal direction through the wall portion. The present invention can be applied even in a configuration in which the resin pipe 21 is connected by the resin pipe joints 30 (130, 230).
In the first embodiment described above, the resin piping joint 30 is manufactured by fusing a pair of halves 38 and 38, but the straight pipe portion 32 of the halves 38 is a large-diameter tubular body according to the third embodiment. Inserted into 49b, the terminal portion 37b of the electric heat fusion mechanism 37 of the large-diameter cylinder 49b is energized to heat and melt the outer circumference of the straight pipe portion 32 of the half body 38 and the inner circumference of the large-diameter cylinder 49b. A resin piping joint may be manufactured in which a large-diameter tubular body 49b is joined to the end of the straight pipe portion 32 of the half body 38. Further, such a half body 38 and a large diameter tubular body 49b may be fused and manufactured and used at a construction site.
In the above, an example in which the recess 35 which is continuous in the circumferential direction is formed as the holding portion 31 has been described, but the recess 35 may be provided in a part in the circumferential direction, and the pipe holding member 45 is supported and fixed. Any shape may be used.
In the above, the resin piping joints 30 (130, 230) are formed in a straight shape extending in the uniaxial direction, but bent-shaped joints such as elbows and branched joints such as T-shaped joints are used. However, it is possible to apply the present invention.
In the above, the pipe support structure 40 using the resin pipe joints 30 (130, 230) is provided on the uppermost floor slab 11 and the lowermost floor slab 11, but is not particularly limited. For example, it may be provided on the floor slab 11 of each layer, or may be provided for each of a plurality of layers.

10 ... Building 11 ... Floor slab 12 ... Through hole 20 ... Piping 21 ... Resin piping 23 ... Elbow 24 ... T-shaped joint 25 ... Insulation material 30, 130, 230 ... Resin piping joint 31 ... Holding part 32 ... Straight pipe part 33 ... Increasing diameter 33a ... Step 35 ... Recess 36 ... Penetration 37 ... Electric heat fusion mechanism 37a ... Heating coil 37b ... Terminal 38 ... Half body 40 ... Piping support structure 41 ... Stand 43 ... Frame material 45 ... Piping holding Member 46 ... Fixed portion 47 ... Band portion 47a ... Band piece 48 ... Flange portion 48a ... Spacer 49a ... Small diameter cylinder 49b ... Large diameter cylinder

Claims (4)

Piping is arranged through the through hole formed in the floor slab of the building.
A holding portion held by a pipe holding member arranged in the vicinity of the through hole in the pipe is provided, and the pipe holding member is fitted to the holding portion by a straight pipe portion and enlarged diameter portions on both ends. Resin piping joints with recesses along the circumferential direction
With a pedestal fixed to the building,
The pipe holding member is fitted in the recess, connected to the pedestal , supported and fixed to the floor slab, and the resin pipe joint is attached to the floor slab regardless of the thermal expansion and contraction of the pipe. A piping support structure characterized by holding a position. The piping holding member is
The pipe support structure according to claim 1, wherein the pipe support structure is arranged so as to surround the periphery of the recess. The resin piping joint is
The pipe support structure according to claim 1 or 2, further comprising an electric heat fusion mechanism having a terminal portion and capable of fusion with an end portion of a resin pipe by energization. The holding part is
Any of claims 1 to 3, wherein the straight pipe portions of a pair of single-sided receiving short pipes having a part of the straight pipe portion and the enlarged diameter portion are formed by butt fusion with the straight pipe portions facing each other. The pipe support structure described in item 1.

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