JP4017048B2 - Piping structure of building unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a piping structure of a building unit in which an underfloor sheet is stretched on the lower surface of a framework in which columns and beams are assembled in a box shape, and more particularly to a piping structure of a building unit in which piping is provided through the underfloor sheet.
[0002]
[Background]
In recent years, in order to increase the industrialization rate and shorten the construction period at a construction site, a unit construction method is used in which a plurality of building units are manufactured in advance in a factory, and these are combined at the construction site to construct a building.
For example, when manufacturing a building unit having a substantially rectangular parallelepiped shape, a framework having a substantially rectangular parallelepiped shape is formed in a factory by connecting the upper and lower ends of four columns with upper and lower beams, respectively. The building materials such as flooring materials and ceiling surface materials are assembled to the floor. In such a building unit, an underfloor sheet such as an ant proof sheet is usually stretched on the lower surface of the framework.
[0003]
In addition, pipes for facilities such as water supply pipes, drain pipes, and gas pipes are previously built for each building unit in the factory, and the pipes of each building unit are connected to each other at the construction site.
When extending the piping for such facilities downward from the building unit on the first floor, for example, as shown in FIG. Through-holes 95 are formed in the floor material 94 attached on the lower beam 93 of the building unit 91 of the building unit 91, and a cross-shaped cut 97 is provided in the lower floor sheet 96 stretched on the lower surface of the lower beam 93. The pipe 98 is inserted through the notch 97.
[0004]
[Problems to be solved by the invention]
In this method, when the pipe 98 passes through the underfloor sheet 96, the pipe 98 is only passed through the notch 97, so that the notch 97 is turned up to form a relatively large gap between the pipe 98 and the underfloor sheet 96. There is a problem that the airtightness of the building unit 91 is lowered. In particular, when the underfloor sheet 96 is an ant proof sheet, there is a possibility that a sufficient ant proof effect cannot be obtained due to the gaps described above.
[0005]
The object of the present invention is to reliably close the gap generated between the underfloor sheet and the piping, thereby improving the airtightness of the building unit and excellent when the underfloor sheet is an ant-proof sheet. Another object of the present invention is to provide a building unit piping structure that can secure an anti-ant effect.
[0006]
[Means for Solving the Problems]
  The present invention will be described with reference to the drawings. The pillars 11 and 21 and the beams 12, 13, 22, and 23 are assembled in a box shape on the lower surfaces of the frames 14 and 24.Ant protectionA piping structure of building units 1 and 2 with seats 17 and 27 stretched,Ant protectionPipes 3, 6 and 7 provided through the sheet, and attached to this pipe,AndAnts around the pipeInsert the sheet from above and belowAnd close the gap between the pipe and the ant-proof sheetA pair of clamping plates 4, 5, 8, and 9 are provided.
[0007]
  In the present invention, the pipe is attached with a sandwiching plate for sandwiching the underfloor sheet from above and below, so that even if a gap is formed between the pipe and the underfloor sheet by turning the pipe through the underfloor sheet, Since the gap can be closed from above and below by the pair of clamping plates, the airtightness of the building unit can be improved. Also, ExcellentAnt-proof effect can be secured.
[0008]
  The clamping plate described above is a ring-shaped plate made up of a pair of arcuate plates 40 and 50 having a substantially U-shape in plan view, and these arcuate plates are coupled to each other with the pipes sandwiched from both sides. May be.
  Such a clamping plate is fixed to the pipe by a frictional force generated between the pair of arcuate plates and the pipe.
  Since the clamping plate is divided into a pair of arc-shaped plates, a predetermined position in the pipe, specifically,Ant protectionSince it can be directly attached to the upper and lower positions of the sheet and the clamping plate does not need to be fitted from the end of the pipe and moved to a predetermined position, it can be easily mounted.
[0009]
In this case, the arc-shaped plates may be coupled to each other by using, for example, a fastening tool such as a screw. However, the pair of arc-shaped plates have a protrusion 43 at one end and engage with the protrusion at the other end. It is preferable that they have the same shape with the receiving portion 44.
[0010]
When the pair of arcuate plates face each other so as to form a ring shape, the protrusions and the receiving portions face each other. When the pipe is sandwiched with the pair of arcuate plates facing each other and the protrusions and the receiving portions are engaged with each other, the arcuate plates are coupled to each other with the pipe tightened. Therefore, the arc-shaped plates can be easily coupled to each other and can be easily attached to the pipe by simply engaging the projections and the receiving portions of the arc-shaped plate with each other.
Further, by sharing a pair of arc-shaped plates, the arc-shaped plates can be manufactured easily and inexpensively.
[0011]
Further, it is desirable that the arc-shaped plate has arc-shaped cut grooves 46 and 47 concentric with the arc-shaped end edge on the inner side thereof.
In this way, by cutting the arc-shaped plate along the cut groove, the size of the arc at the inner edge, that is, the inner diameter of the clamping plate can be easily and accurately changed. Therefore, if the arc-shaped plate is cut according to the outer diameter of the pipe, the common arc-shaped plate can be used for pipes having different outer diameters.
[0012]
Or the clamping plate mentioned above may be formed in the ring shape which can penetrate piping, and may be screwed together by the outer peripheral surface of piping.
Thus, if the clamping plate is screwed into the pipe, the clamping plate can be reliably fixed at a predetermined position of the pipe.
[0013]
  And when the pipe protrudes downward from the lower surface of the frame, the clamping plate may be attached to the pipe below the lower surface of the frame, but the lower end of the pipe is above the lower surface of the frame, The clamping plate is attached to the pipe above the lower surface of the framework, and these clamping platesAnt protectionIt is desirable that the seat is lifted above the lower surface of the framework.
  Here, “above the lower surface of the framework” includes both the case of being flush with the lower surface of the framework and the case of being above the lower surface of the framework.
[0014]
  In this case, since the lower end of the pipe and the sandwiching plate do not protrude from the lower surface of the frame, it is not necessary to specially protect the lower end of the pipe and the sandwiching plate when placing the building unit on a flat place. Units can be easily transported and stored. Therefore, since the piping and the clamping plate can be incorporated in advance in the framework of the building unit at the factory, the industrialization rate of the building unit can be increased.
  Also,Ant protectionBecause the seat is lifted above the lower surface of the framework,Ant protectionThe sheet can be reliably prevented from loosening.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the building units 1 and 2 of this embodiment stacked in two stages. Each of the building units 1 and 2 includes four pillars 11 and 21 (only two are shown in the figure) and four upper beams 12 and 22 that connect the upper ends of the four pillars 11 and 21 ( And a cuboid frame 14 and 24 including four lower beams 13 and 23 (only three are shown in the figure) connecting the lower ends of the four pillars 11 and 21. ing. In each of the frames 14, 24, a ceiling surface material 15.25 and a floor surface material 16, 26 are assembled. Among these, the ceiling members 15 and 25 are stretched on the lower surfaces of the upper beams 12 and 22, respectively, and the floor members 16 and 26 are stretched on the upper surfaces of the lower beams 13 and 23. Further, ant-proof sheets 17 and 27 as under-floor sheets are stretched on the lower surfaces of the frames 14 and 24, that is, the lower surfaces of the lower beams 13 and 23.
[0016]
The upper floor building unit 1 stacked in the upper stage incorporates a wash basin 18 that is a building facility. The wash basin 18 is connected to a drain pipe 3 as a pipe made of plastic such as vinyl chloride resin, and the drain pipe 3 is connected to a sewer (not shown) through a lower-floor building unit 2 arranged at a lower level. ing. Thereby, the sewage of the washstand 18 can be drained through the drain pipe 3.
As shown in FIG. 2, the drain pipe 3 is provided through the floor material 16 and the ant-proof sheet 17 of the upper floor building unit 1 and the ceiling surface material 22 of the lower floor building unit 2. The drain pipe 3 of the present embodiment includes an upper floor drain pipe 31 incorporated in the upper floor building unit 1, a lower floor drain pipe 32 incorporated in the lower floor building unit 2, and these building units 1, 2. And a connecting pipe 33 connecting the upper floor drain pipe 31 and the lower floor drain pipe 32.
[0017]
The lower end of the upper floor drain pipe 31 and the upper end of the connecting pipe 33 are connected via an insertion joint 34 inserted through the floor material 16 of the upper floor building unit 1. The insertion joint 34 includes an annular flange 34 </ b> A, and the flange 34 </ b> A is locked to the upper surface of the floor material 16 of the upper floor building unit 1.
On the other hand, the lower floor drain pipe 32 penetrates the ceiling surface material 25 so that the upper end thereof is slightly lower than the height level of the upper surface of the framework 24 of the lower floor building unit 2, specifically, the upper surface of the upper beam 22. Is provided. A cover 36 is attached to the sewage drain pipe 32 to cover the penetrating portion of the ceiling surface material 25 from the lower surface side. The upper end of the lower floor drain pipe 32 and the lower end of the connecting pipe 33 are connected to the upper side of the ceiling surface member 25 via the insertion joint 35.
[0018]
As shown in FIG. 3, the connecting pipe 33 that connects the upper floor drain pipe 31 and the lower floor drain pipe 32 is inserted into the through-hole 17 </ b> A that is formed in the ant-proof sheet 17 of the upper floor building unit 1. Has been.
A pair of sandwiching plates 4 and 5 for sandwiching the ant protection sheet 17 from above and below are attached to such a connecting pipe 33. These clamping plates 4 and 5 are ring-shaped plates each made up of a pair of arcuate plates 40 and 50 having a substantially U-shape in plan view, and these arcuate plates 40 and 50 connect the connecting pipe 33 from both sides. They are connected to each other in a sandwiched state.
[0019]
The pair of arc-shaped plates 40 and 50 are of the same shape and are made of plastic such as vinyl chloride resin. As shown in FIG. 4, the arc-shaped plates 40 and 50 include a disc-shaped plate body 41 having a protrusion 43 at one end and a receiving portion 44 that engages with the protrusion 43 at the other end. The protrusions 43 and the receiving portions 44 can be integrated by engaging with each other.
Further, as shown in FIG. 5, each of the arc-shaped plates 40 and 50 has an upright portion 45 that rises vertically from an arc-shaped end edge 41 </ b> A on the inner side of the plate body 41 (the side facing the plates 40 and 50). I have. The upright portion 45 has an outer shape of the connecting pipe 33, that is, an arc-shaped planar shape corresponding to the outer diameter, and the connecting pipe 33 (see FIGS. 2 and 2) is formed by the upright portions 45 of the two arc-shaped plates 40 and 50. 3)). As a result, the contact area between the arc-shaped plates 40 and 50 and the connecting pipe 33 is increased and the frictional force can be increased, so that it can be firmly attached to the connecting pipe 33. In addition, since the plate body 41 perpendicular to the upright portion 45 is brought into close contact with the connecting pipe 33, the plate bodies 41 perpendicular to the vertical section 45 are orthogonal to the connecting pipe 33. So that it can be mounted in an accurate posture.
[0020]
Further, as shown in FIG. 5, the arc-shaped plates 40, 50 include a plurality of arc-shaped cut grooves 46, 47 and upright portions 48, 49 erected along the cut grooves 46, 47. ing.
The cut grooves 46 and 47 are each formed in a substantially V-shaped cross section, and the plate body 41 can be cut along the cut grooves 46 and 47. Such cut grooves 46 and 47 are formed concentrically with the inner edge 41 </ b> A of the plate body 41, and are provided at positions corresponding to other connecting pipes having different outer diameters from the connecting pipe 33.
[0021]
The upright portions 48 and 49 are provided so as to rise vertically from the outer opening ends of the cut grooves 46 and 47, and the arc-shaped plates 40 and 50 are cut along the cut groove 46 in the same manner as the upright portions 45 described above. Are configured such that the connecting pipes are sandwiched from both sides by the uprights 48, and when the arc-shaped plates 40, 50 are cut along the cut grooves 47, the connecting pipes are inserted from both sides by the uprights 48. It is comprised so that it may pinch.
The inner surfaces of the upright portions 48 and 49 are flush with the outer side walls 46A and 47A constituting the cut grooves 46 and 47, respectively, and when the plate body 41 is cut along the cut grooves 46 and 47, respectively. The cut surface is configured to be flush with the inner surfaces of the upright portions 48 and 49. Thereby, the upright parts 48 and 49 can be stuck to the connecting pipe.
In FIG. 5, only the arc-shaped plate 40 is illustrated, but the arc-shaped plate 50 is the same as the arc-shaped plate 40. 4 and 5 show only the clamping plate 4, the clamping plate 5 is also the same as the clamping plate 4.
[0022]
On the other hand, returning to FIG. 1, the lower floor drainage pipe 32 has a structure similar to the connection structure of the upper floor drainage pipe 31 and the connecting pipe 33, and penetrates the ant-proof sheet 27 of the lower floor building unit 2 into the sewer. An underfloor drain pipe 38 is connected to the underfloor drain pipe 38, and the same sandwiching plates 4 and 5 as the sandwiching plates 4 and 5 attached to the connecting pipe 33 are similarly attached to the underfloor drain pipe 38. A through hole (not shown) formed in 27 is closed.
[0023]
In the present embodiment configured as described above, the drainage pipe 3 is constructed in the following procedure.
First, in the factory, the frames 14 and 24 are assembled by the columns 11 and 21 and the beams 12, 13, 22, and 23, and the ceiling members 15 and 25 and the floor members 16 and 26 are respectively added to these frames 14 and 24. The building units 1 and 2 are manufactured by assembling the artificial materials. At this time, the ant-proof sheets 17 and 27 are respectively attached to the lower surfaces of the frames 14 and 24, the upper floor drain unit 31 is incorporated in the upper floor building unit 1, and the lower floor drain pipe 32 is incorporated in the lower floor building unit 2. Leave it in.
Thereafter, the building units 1 and 2 are transported to the construction site, the lower-floor building unit 2 is placed on the foundation (not shown), and the upper-floor building unit 1 is stacked on the lower-floor building unit 2. . At this time, the connecting pipe 33 is arranged through the ant-proof sheet 17 of the upper floor building unit 1, and each end thereof is connected to the upper floor drain pipe 31 and the lower floor drain pipe 32 via the plug joints 34 and 35, respectively. Connect to.
[0024]
Next, the clamping plates 4 and 5 are attached to the connecting pipe 33, and the ant-proof sheet 17 is sandwiched from above and below by these clamping plates 4 and 5.
That is, the plate main bodies 41 of the pair of arc-shaped plates 40 and 50 are faced upward and the upright portions 45 inside each other face each other, and the connecting pipe 33 is sandwiched from both sides under the ant-proof sheet 17. At this time, each plate body 41 of the arc-shaped plates 40 and 50 is brought into close contact with the ant-proof sheet 17 so as to close the through-hole 17A from below, and the projections 43 and the receiving portions 44 are engaged with each other to form an arc shape. The plates 40 and 50 are integrated. Then, the upright portions 45 of the arc-shaped plates 40 and 50 are brought into pressure contact with the outer peripheral surface of the connecting pipe 33 so that the connecting pipe 33 is tightened, whereby the clamping plate 5 is fixed to the connecting pipe 33. .
[0025]
Similarly, the plate main bodies 41 of the pair of arc-shaped plates 40 and 50 are faced down, the upright portions 45 inside each other face each other, and the connecting pipe 33 is sandwiched from both sides above the ant-proof sheet 17. At this time, the plate main bodies 41 of the arc-shaped plates 40 and 50 are brought into close contact with the ant-proof sheet 17 so as to close the through hole 17A from above, and the ant-proof sheet 17 is sandwiched together with the lower clamping plate 5. In this state, the projections 43 and the receiving portions 44 are engaged with each other to integrate the arc-shaped plates 40 and 50, thereby fixing the clamping plate 4 to the connecting pipe 33.
When the clamping plates 4 and 5 are installed, the lower clamping plate 5 may be attached after the upper clamping plate 4 is installed.
[0026]
The underfloor drain pipe 38 passes through the ant-proof sheet 27 of the lower floor building unit 2 and is connected to the lower end of the lower floor drain pipe 32. Thereafter, in the same manner as in the case of the connecting pipe 33, the playing plates 4 and 5 are attached to the underfloor drain pipe 38, and the ant-proof sheet 27 is sandwiched from above and below by these clamping plates 4 and 5.
[0027]
Further, when the clamping plates 4 and 5 are attached to the drain pipe having a larger outer diameter than the connecting pipe 33 and the underfloor drain pipe 38 of the present embodiment, the cut grooves 46 and 47 corresponding to the outer diameter of the drain pipe. The arcuate plates 40 and 50 are cut along the direction and attached.
[0028]
According to this embodiment, there are the following effects.
That is, the connecting pipe 33 and the underfloor drain pipe 38 are provided with sandwiching plates 4 and 5 for sandwiching the ant protection sheets 17 and 27 from above and below, respectively. The dovetail sheet 17 is turned up and a gap is formed between the connecting pipe 33 and the underfloor drain pipe 38 is inserted into the dovetail sheet 27 so that the dovetail sheet 27 is turned up and a gap is formed between the drain pipe. However, since the gap can be closed from above and below by the pair of sandwiching plates 4, 5, the airtightness of the building units 1, 2 can be improved, and an excellent ant protection effect can be secured.
[0029]
Further, since the sandwiching plates 4 and 5 are respectively divided into a pair of arcuate plates 40 and 50, the upper and lower sides of the ant-proof sheet 17 in the connecting pipe 33, the upper side of the ant-proof sheet 27 in the underfloor drain pipe 38, and Can be attached directly to the lower side. Therefore, the clamping plates 4 and 5 do not have to be fitted from the end portions of the connecting pipe 33 and the underfloor drain pipe 38 and moved to a predetermined position, so that they can be easily mounted.
[0030]
Furthermore, since the arc-shaped plates 40 and 50 have the projections 43 at one end and the receiving portions 44 engaged with the projections 43 at the other end, the projections 43 and the receiving portions of the arc-shaped plates 40 and 50 are provided. The arc-shaped plates 40 and 50 can be easily coupled to each other by simply engaging the 44 with each other, and can be easily attached to the connecting pipe 33 and the underfloor drain pipe 38.
Further, since the pair of arc-shaped plates 40 and 50 are the same and can be shared, the arc-shaped plates 40 and 50 can be manufactured easily and inexpensively.
[0031]
Furthermore, since the arc-shaped plates 40 and 50 have arc-shaped cut grooves 46 and 47 concentric with the arc-shaped end edge 41 </ b> A inside thereof, the arc-shaped plates 40 and 50 are cut along the cut grooves 46 and 47. By doing so, the size of the arcs of the arc-shaped plates 40, 50, that is, the inner diameters of the sandwiching plates 4, 5 can be changed easily and accurately. Therefore, by cutting the arc-shaped plates 40 and 50 according to the outer diameters of the connecting pipe 33 and the underfloor drain pipe 38, the arc-shaped plates 40 and 50 that are common to the connecting pipe and the under-floor drain pipe having different outer diameters. It can respond.
[0032]
[Second Embodiment]
The piping structure of the present embodiment shown in FIG. 6 is obtained by omitting the connecting pipe 33 of the first embodiment, the same parts as those in FIGS. Only the different parts will be described in detail below.
The upper floor drain pipe 61 of the present embodiment is provided so as to penetrate the floor surface material 16 and the ant protection sheet 17 of the upper floor building unit 1, and the lower end thereof is installed slightly above the lower surface of the framework 14. ing. A cover 37 is attached to the upper floor drain pipe 61 so as to cover the through portion of the floor material 16 from the upper surface side.
Further, sandwiching plates 4, 5 are attached to the lower end of the upper floor drain pipe 61, and the ant-proof sheet 17 sandwiched between the sandwiching plates 4, 5 is lifted above the lower surface of the framework 14.
Such an upper floor drain pipe 61 is directly connected to the lower floor drain pipe 62 through the insertion joint 35.
[0033]
Moreover, although not shown in figure, the lower floor drain pipe 62 is provided penetrating the ant-proof sheet | seat 27 (refer FIG. 1) of the lower floor building unit 2 similarly to the upper floor drain pipe 61, and the lower end is the framework 24 (FIG. 1)) so as to be slightly above the lower surface. At the lower end portion of the lower floor drain pipe 62, a clamping plate for clamping the ant protection sheet 27 is mounted, and the ant protection sheet 27 is lifted above the lower surface of the skeleton 24 by these clamping plates. The lower end of the lower floor drain pipe 62 is connected to the under floor drain pipe through an insertion joint.
[0034]
In the present embodiment configured as described above, when the building units 1 and 2 are assembled in the factory, the upper floor drain pipe 61 is incorporated into the upper floor building unit 1 and the lower floor drain pipe 62 is assembled into the lower floor building unit 2. Is incorporated. At this time, in the upper floor building unit 1, the lower end portion of the upper floor drain pipe 61 is inserted into the through hole 17 </ b> A of the ant protection sheet 17, and the clamping plates 4 and 5 are attached to the upper floor drain pipe 61. The ant-proof sheet 17 is sandwiched between the clamping plates 4 and 5 and lifted upward. Thereby, the upper floor drain pipe 61, the clamping plates 4 and 5, and the ant-proof sheet 17 do not protrude from the lower surface of the upper floor building unit 1.
Similarly, a clamping plate is also attached to the lower-floor drain pipe 62 of the lower-floor building unit 2 to lift the ant-proof sheet 27 (see FIG. 1).
[0035]
At the construction site, when the building units 1 and 2 are stacked, the upper floor drain pipe 61 and the lower floor drain pipe 62 are connected by the insertion joint 35, and the lower end of the lower floor drain pipe 62 is connected to the floor lower drain pipe. To do.
[0036]
According to this embodiment, in addition to the effects and effects similar to those of the first embodiment, there are the following effects.
That is, the lower end of the upper floor drain pipe 61 and the lower end of the lower floor drain pipe 62 are set upward from the lower surfaces of the frames 14 and 24, and the sandwiching plates 4 and 5 are above the lower surfaces of the frames 14 and 24. Since it is attached to the floor drain pipe 61 and the lower floor drain pipe 62, the lower end of the upper floor drain pipe 61 and the sandwiching plates 4 and 5 do not protrude from the lower surface of the frame 14, and the lower floor drain pipe from the lower surface of the frame 24. The lower end of 62 and the clamping plate do not protrude. Therefore, when the building units 1 and 2 are placed on a flat place, the lower ends of the upper floor drain pipe 61 and the lower floor drain pipe 62 and the sandwiching plates 4 and 5 do not need to be specially protected. Therefore, the building units 1 and 2 can be easily transported and stored. Accordingly, since the drain pipes 61 and 62 and the sandwiching plates 4 and 5 can be previously incorporated in the frameworks 14 and 24 of the building units 1 and 2 in the factory, the industrialization rate of the building units 1 and 2 can be increased.
Moreover, since the ant-proof sheets 17 and 27 are lifted above the lower surfaces of the frames 14 and 27 by the sandwiching plates 4 and 5, the ant-proof sheets 17 and 27 can be reliably prevented from loosening.
[0037]
[Third embodiment]
The structure of the pipe 7 of the present embodiment has substantially the same structure as the structure of the pipe 3 of the first embodiment, and only the connection structure of the upper floor drain pipe, the connecting pipe and the lower floor drain pipe is different. The same parts are denoted by the same reference numerals and detailed description thereof is omitted, and only different parts are described in detail below.
As shown in FIG. 7, the upper floor drain pipe 71, the lower floor drain pipe 72 and the connecting pipe 73 of this embodiment are made of a threadable material such as a steel pipe. Tapered screws 71A, 72A, 73A, 73B are cut at the upper end of the floor drain pipe 72 and the upper and lower ends of the connecting pipe 73, respectively. The lower end of the upper floor drain pipe 71 and the upper end of the connecting pipe 73 are connected via a screw joint 74 internally threaded, and similarly, the lower end of the connecting pipe 73 and the upper end of the lower floor drain pipe 72 are for screwing. They are connected via a joint 75.
[0038]
In the connecting pipe 73 of this embodiment, a female screw 73C is cut on a taper screw 73B at the lower end, and the clamping plates 8 and 9 are screwed into the female screw 73C.
The clamping plates 8 and 9 of the present embodiment are made of a threadable material, are formed in a ring shape through which the connecting pipe 73 can be inserted, and include the cut grooves 46 and 47 and the upright portions 48 and 49 of the first embodiment. Not. Such clamping plates 8 and 9 are attached to the connecting pipe 73 with the ant-proof sheet 17 sandwiched in the same manner as in the first embodiment.
The clamping plates 8 and 9 of this embodiment adjust the mounting position and the clamping state of the ant-proof sheet 17 by moving up and down along the male screw 73 </ b> C of the connecting pipe 73.
Although not shown, the lower drainage pipe connected to the lower end of the lower floor drainage pipe 72 is provided with the same clamping plate as the clamping plates 8 and 9 attached to the connecting pipe 73, and these clamping plates 8 and 9. Thus, the through-hole formed in the ant-proof sheet of the lower floor building unit is closed.
[0039]
According to the present embodiment, the same operations and effects as those of the first embodiment can be obtained, and the sandwiching plates 8 and 9 are screwed into the connecting pipe 73. Can be reliably fixed to a predetermined position of the connecting pipe 73.
[0040]
The present invention is not limited to the above-described embodiments, and includes other configurations that can achieve the object of the present invention, and includes the following modifications and the like.
That is, the drain pipes 61 and 62 of the second embodiment may be formed of a threadable material. In this case, the drain pipe is connected via a screw joint as in the third embodiment. Furthermore, the clamping plates 8 and 9 of the third embodiment may be mounted instead of the clamping plates 4 and 5. .
Further, the drain pipes 3, 6 and 7 of each of the above embodiments are divided into a plurality of drain pipes, but these may be integrated. In short, the pipes to which the clamping plates are attached are below the floor of the building unit. If it is piping which penetrates a sheet | seat, the length, a division | segmentation position, etc. will not be limited.
The equipment to which the drain pipes 3, 6 and 7 are connected is not limited to the wash basin 18, and any kind of equipment can be used as long as it is a facility from which dirty water is discharged, such as a bathtub or a sink.
[0041]
  In each of the above embodiments, the case where the pipe is a drain pipe has been described. However, the pipe is not limited to the drain pipe, and may be, for example, a water supply pipe, a hot water supply pipe, or a gas pipe, and the type of the pipe is arbitrary. is there.
[0042]
【The invention's effect】
  As described above, according to the present invention, the piping includesAnt protectionPiping plate is attached to hold the sheet from above and below.And ant protectionSheetWithSince the gap can be closed from above and below by the pair of clamping plates, the airtightness of the building unit can be improved. Also, ExcellentAnt-proof effect can be secured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a main part of the first embodiment.
FIG. 3 is an exploded view showing a partially broken pipe of the first embodiment.
FIG. 4 is a perspective view showing a clamping plate of the first embodiment.
FIG. 5 is a view showing an arc-shaped plate according to the first embodiment.
FIG. 6 is a cross-sectional view showing a main part of a second embodiment of the present invention.
FIG. 7 is an exploded view showing a partially broken pipe of a third embodiment of the present invention.
FIG. 8 is a cross-sectional view showing a conventional piping structure.
[Explanation of symbols]
1, 2 Building unit
3, 6, 7 Drain pipe (pipe)
4, 5, 8, 9 Holding plate
11,21 pillar
12, 13, 22, 23 Beam
14,24 skeleton
17, 27 Ant protection sheet (under-floor sheet)
40, 50 Arc-shaped plate
43 Protrusions
44 Receiver
46, 47 Cut groove

Claims (6)

It is a piping structure of a building unit in which a ant-proof sheet is stretched on the lower surface of a framework in which columns and beams are assembled in a box shape,
Piping provided through the ant proof sheet;
The piping is mounted, and Nde write sandwiching the anti-termite sheet around the pipe from above and below, of the building unit, characterized in that a pair of clamping plates for closing the gap between the pipe and the anti-termite sheet Piping structure. In the piping structure of the building unit according to claim 1,
The clamping plate is a ring-shaped plate composed of a pair of arcuate plates having a substantially U shape in a planar shape,
These arc-shaped plates are connected to each other in a state where the piping is sandwiched from both sides, and the piping structure of a building unit.   3. The building unit piping structure according to claim 2, wherein the pair of arcuate plates have the same shape, each having a protrusion at one end and a receiving portion engaging the protrusion at the other end. The piping structure of a building unit characterized by   4. The building unit piping structure according to claim 2, wherein the arcuate plate has an arcuate cut groove concentric with an arcuate edge inside thereof. Construction. In the piping structure of the building unit according to claim 1,
The sandwiching plate is formed in a ring shape into which the pipe can be inserted, and is screwed to the outer peripheral surface of the pipe. In the piping structure of the building unit according to any one of claims 1 to 5,
The lower end of the piping is made upward from the lower surface of the framework,
The clamping plate is mounted on the pipe above the lower surface of the framework,
The building unit piping structure, wherein the ant-proof sheet is lifted above the lower surface of the frame by these clamping plates.

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