JP4393025B2 - Unit bus piping structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a piping structure in a unit bus.
[0002]
[Prior art and problems]
Conventionally, as disclosed in JP-A-8-209761, the unit bus has a piping structure as shown in a perspective view in FIG. 10 and an enlarged cross-sectional view of a main part in FIG.
That is, a washing pan 52 and a bathtub installation surface 53 are formed on the floor pan 51 constituting the bottom surface of the unit bath, and the water supply pipe 55 and the hot water supply are passed through the opening 54 formed through the bathtub installation surface 53. As shown in FIG. 11, a pipe body such as a pipe 56 is set up, and a frame body 59 is provided around the opening 54, and a waterproof packing 57 is fixed to the frame body 59, and the waterproof packing 57 is formed. The pipe (water supply pipe 55) is passed through the tubular pipe penetration part 57a, filled with the sealing material 60, and the hose band 58 is tightened around the pipe penetration part 57a to stop water.
[0003]
In such a structure, since another member such as the hose band 58 is used, there is a problem that the cost is excessive, and when the sealing material 60 is applied to the vertical surface of the pipe 55 and applied, the sealing material Could easily flow down, resulting in poor water stoppage and easy construction failure.
Further, when the upper end of the pipe 55 is not the male screw 55a but a female screw having a large diameter, it is difficult to pass the female screw portion into the pipe penetrating portion 57a, and the diameter of the pipe penetrating portion 57a is set to be large. When the hose band 58 is tightened, there is a problem that when the hose band 58 is tightened, a large wrinkle is formed in the pipe penetrating portion 57a, and water stoppage is liable to occur.
[0004]
[Means for Solving the Problems]
The present invention has been devised in view of the above-mentioned conventional problems, and aims to provide a unit bath piping structure that does not cause poor water stop even if the piping contact portion is formed widely. The gist of the structure is that a pipe such as a water supply pipe or a hot water supply pipe is started up through the opening of the floor pan, and the opening is covered with a waterproof packing. The pipe penetration part includes a contractible pipe contact part that is elastically attached to the outer periphery of the pipe and has an open lower end, and a seal material reservoir part having a diameter larger than the diameter when the pipe contact part is contracted above the pipe contact part. Is formed.
Moreover, the 2nd summary is that the said wrinkle-shaped wrinkle which can shrink | contract is formed in the said piping contact part.
Moreover, the 3rd summary is that the convex part of the said wrinkle is formed in the shape from which rising length and falling length differ.
[0005]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an enlarged perspective view of a main part of a floor pan 1 constituting a bottom surface of a unit bath. A corner step portion 3 is integrally formed at a corner portion of a bathtub installation surface 2 of the floor pan 1. An opening 4 is formed in the corner step portion 3 in a penetrating manner, and a pipe (water supply pipe) 5 and a pipe (hot water supply pipe) 6 stand from the lower side to the upper side through the penetration part 4. The upper ends of the pipes 5 and 6 in this example are respectively provided with female screw portions 5a and 6a having large diameters.
[0006]
Further, the waterproof packing 7 that covers the opening 4 is fixedly attached to the opening 4 via the packing fixing frame 9 to stop the water. The pipe penetrating portions 8 and 8 are integrally formed in a rising shape, and the pipe penetrating portion 8 is shown in an enlarged manner in FIG. 2, and FIG. 3 shows a cross-sectional view thereof.
That is, the pipe penetrating portion 8 is formed to rise upward in a cylindrical shape, and a seal material reservoir portion 10 having a bowl shape in a curved shape is integrally formed downward from the upper end toward the center portion, A pipe contact portion 11 is integrally formed in a hanging shape at the lower end of the seal material reservoir 10.
[0007]
The pipe contact portion 11 has substantially the same diameter as the outer diameters of the pipes 5 and 6, and is configured to be elastically attached to the outer periphery of the pipes 5 and 6 by elasticity. Are provided with shrinkable uneven wrinkles which will be described later.
The seal material reservoir 10 is formed to have a larger diameter than the contracted diameter of the pipe contact portion 11, and a seal material such as silicon can be stored in the seal material reservoir 10. Therefore, it is configured to ensure a high sealing performance.
[0008]
As shown in the schematic view seen from the upper surface side of FIG. 4, the pipe contact portion 11 is formed with a pair of wrinkle convex portions 12, 12 projecting outward so as to face each other. 12, the contraction range is expanded, and as shown in FIG. 5, the female screw portion 5 a of the pipe 5 can be passed into the pipe contact portion 11 from the lower side, and the wrinkle convex portion 12 is passed when the female screw portion 5 a passes. , 12 expands well, and after passing through the female screw portion 5a, it contracts well as shown in FIG. 6 and is elastically attached to the outer periphery of the pipe 5 to ensure good sealing performance. It can be done.
Furthermore, after that, when the sealing material is filled in the sealing material reservoir 10, the sealing material does not flow down, and the sealing material can be well accumulated in the sealing material reservoir 10, and the sealing material is solidified. A certain water-stopping property can be secured.
[0009]
7 shows a modified example of the wrinkle formed on the pipe contact portion 11, and in FIG. 7, the wrinkle convex portions 12, 12, 12, 12 are integrally formed so as to protrude in four directions. In addition, when the number of the wrinkle convex portions 12 is increased, good shrinkage performance is obtained.
[0010]
Further, FIG. 8 shows a modified example of wrinkles.
The wrinkle convex portions 12 and 12 in FIG. 8 extend in a shape that clings to the outer peripheral side of the pipe contact portion 11, and the rising length a of the rising piece 12 a on the outer peripheral side of each wrinkle convex portion 12 and the inner periphery The falling length b of the side falling piece 12b is formed to have a different length, and the length a of the outer rising piece 12a is set to be longer than the length b of the falling piece 12b. Therefore, when the female threaded portion 5a is passed through the pipe contact portion 11, the diameter can be increased well and the female threaded portion 5a can be smoothly passed. After that, since the wrinkle projections 12 and 12 are contracted so as to be clinging to the outer periphery, the elastic material firmly adheres to the outer periphery of the pipe 5 and then the seal material filled in the seal material reservoir 10 flows down. Can be prevented well Becomes shall, it becomes a better water stopping can be secured.
In addition, the wrinkle convex part 12 can be formed in a plurality of irregular shapes such as wavy to ensure the contraction performance.
[0011]
Next, FIG. 9 shows a reference example, and the waterproof packing 7 as shown in the longitudinal sectional view of FIG. 9 has a bulging portion 8a raised and formed in a bulging shape at the center portion. A pipe contact portion 11 with a reduced diameter is integrally formed on the upper portion of 8a, and a sealing material reservoir 10 is integrally formed on the upper portion of the pipe contact portion 11 in a bowl shape. is there.
In the pipe contact portion 11 of FIG. 9 as well, the wrinkle convex portions 12 and 12 as shown in FIG. 4, FIG. 7 and FIG. 8 described above are formed to ensure good shrinkage performance.
[0012]
Even in the waterproof packing 7 having such a shape, when the female screw portion 5a of the pipe 5 is inserted from the lower side, the pipe contact portion 11 is well expanded, and thereafter, the pipe contact portion 11 contracts and the pipe 5 Even if the upper sealing material reservoir 10 is filled with a sealing material such as silicon, the sealing material does not flow down along the pipe 5, and the sealing material is sealed. It is stored in the material reservoir 10 and is solidified to ensure reliable water stopping performance.
[0013]
【The invention's effect】
The present invention has a structure in which a pipe such as a water supply pipe or a hot water supply pipe is started up through an opening of a floor pan, and the opening is covered with a waterproof packing. In the pipe penetration part, a shrinkable pipe contact part that is elastically attached to the outer periphery of the pipe and the lower end is opened, and a seal material reservoir part having a diameter larger than the diameter when the pipe contact part is contracted are formed above the pipe contact part. Therefore, even when the pipe has a female thread part with a large diameter, the female thread part can pass through the pipe contact part satisfactorily, and then the pipe contact part contracts and is elastically attached to the outer periphery of the pipe. Therefore, even if the sealing material is filled in the upper sealing material reservoir after that, the sealing material does not flow down along the pipe, and the sealing material solidifies well in the sealing material reservoir and ensures reliable water stoppage. It has the effect of ensuring performance.
[0014]
In addition, since the shrinkable uneven wrinkles are formed in the pipe contact part, it can be formed at a low cost when molding the waterproof packing, and good shrinkage performance can be obtained in the pipe contact part. Therefore, without requiring a hose band, the pipe contact portion can be firmly attached to the outer periphery of the pipe via the wrinkles, and water can be stopped.
[0015]
In addition, the wrinkle projections are formed in shapes that have different rising and falling lengths, so that the wrinkles cling to the outer periphery of the pipe, and the pipe contact part is more firmly attached to the outer periphery of the pipe. Thus, it is possible to reliably prevent the sealing material from flowing down and to obtain a reliable water stop performance.
[Brief description of the drawings]
FIG. 1 is an enlarged perspective configuration diagram of a main part in a state in which a water supply pipe and a hot water supply pipe are raised through an opening formed in a floor pan.
FIG. 2 is an enlarged perspective view of a pipe penetration portion of the waterproof packing.
3 is a schematic vertical cross-sectional configuration diagram of FIG. 2. FIG.
4 is an enlarged plan configuration diagram of a pipe contact portion in FIG. 3. FIG.
FIG. 5 is an operation explanatory diagram in a state where a female thread portion of piping is passed through the piping contact portion of FIG. 4;
FIG. 6 is an operation explanatory diagram in a state in which a pipe contact portion is subsequently attached to the outer periphery of the pipe.
FIG. 7 is an enlarged plan view of a pipe contact portion in which wrinkles are formed in different shapes.
FIG. 8 is a plan configuration diagram of a pipe contact portion in which different wrinkle convex portions are formed.
FIG. 9 is a longitudinal sectional configuration diagram showing a reference example of the waterproof packing and in a state in which piping is passed.
FIG. 10 is a perspective configuration diagram of a conventional floor pan.
11 is a longitudinal sectional configuration diagram showing a water stop structure by waterproof packing for the pipe in FIG. 10;
[Explanation of symbols]
1 Floor pan 2 Bath installation surface 3 Corner step 4 Opening 5 Piping (water supply pipe)
5a Female thread part 6 Piping (hot water supply pipe)
6a Female thread part 7 Waterproof packing 8 Piping penetrating part 8a Swelling part 9 Packing fixing frame 10 Sealing material reservoir part 11 Pipe contact part 12 Wrinkle convex part 12a Rising piece 12b Falling piece

Claims (3)

In a structure in which a pipe such as a water supply pipe or a hot water supply pipe is started up through the opening of the floor pan and the opening is covered with a waterproof packing, the waterproof packing has a pipe penetrating part through which the pipe passes up and formed, In the pipe penetration part, a shrinkable pipe contact part that is elastically attached to the outer periphery of the pipe and the lower end is opened, and a seal material reservoir part having a diameter larger than the diameter when the pipe contact part is contracted are formed above the pipe contact part. Unit bus piping structure.   2. The piping structure of a unit bath according to claim 1, wherein the piping contact portion is formed with shrinkable uneven wrinkles.   The unit bus piping structure according to claim 2, wherein the convex portion of the wrinkle is formed in a shape having different rising length and falling length.

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