JPH0331913Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention can be used at penetration points such as water and hot water pipes that penetrate the concrete outer wall of a bathroom, and drainage pipes that penetrate the concrete floor. This is a water stop pad that prevents rainwater or drainage water from seeping into the gaps around pipes and leaking.

[Conventional technology]

Conventionally, before constructing walls, floors, etc. with concrete, the pipes to be piped were positioned in the specified positions, and then a concrete base was poured, and asphalt was placed on top of it to stop the pipes from touching the waterproof layer. Perform water treatment, apply finishing mortar on top of it,
Furthermore, after applying decorative tiles and other exterior materials, asphalt is applied around the base of the pipe that protrudes from the surface of the exterior material to prevent water from flowing.

[Problem that the invention attempts to solve]

However, even with asphalt water-stopping treatment, the shrinkage of the concrete created gaps around the pipes, which caused water to seep in and cause leaks.

The above-mentioned water-stopping treatment by filling and piling the asphalt is an on-site work, which is troublesome and time-consuming, and is difficult to achieve a uniform finish.

The purpose of the present invention is to solve the above-mentioned problems in water-stopping work at pipe penetrations.

[Means for solving problems]

In order to achieve the above object, the present invention forms a cylindrical part made of an elastic material with an inner diameter that tightly fits around the outer periphery of the pipe in a water stop pad for a pipe penetration part,
At one end, there is a wide brim that makes contact with the waterproof layer surface of the wall, floor, etc., and at the other end, there is a brim for setting the finishing thickness of the wall, floor, etc., which matches the surface of the exterior material of the wall, floor, etc., and between the two brim. It is characterized by having a bellows part for length adjustment and a right cylindrical part for attaching a tightening band.

[Effect]

After pouring the base concrete to form a waterproof layer, fit the water stop pad of the present invention into the through pipe protruding from the waterproof layer with the wide brim facing the waterproof layer, and then place the wide brim toward the waterproof layer surface. Bring it into close contact.

Next, adjust the length from the waterproof layer surface to the end surface of the other brim by expanding and contracting the bellows part, fit it into the right cylindrical part in advance, and tighten the band, including the thickness of the exterior material. Set the construction thickness of finishing mortar.

Using the end face of the collar whose position has been adjusted as described above as a reference plane, mortar is cast to that thickness and the exterior material is applied.

Due to the construction of mortar and exterior materials, the water stop pad of the present invention is compressed by pressure from its surroundings and is pressed against the waterproof layer surface of the underlying concrete, so as the mortar and concrete etc. shrink over time, the water stop pad shrinks. Restores itself with its own elasticity. Therefore, there is no gap between the material and mortar, concrete, etc.

〔Example〕

Fig. 1 shows a front view of the water stop pad of the present invention, and Fig. 2 shows a cross-sectional plan view.The cylindrical part 1 is made of rubber or synthetic resin having weather resistance, heat resistance, acid resistance, alkali resistance, etc. It is molded from an elastic material such as, and has an inner diameter that fits tightly around the outer circumference of the tube.

The pipes used have diameters of 100mm, 50mm, 30mm,
There are several types such as 20mm and 12mm, so water stop pads are prepared to suit each diameter.

A wide flange 2 is integrally provided at one end of the cylindrical part 1, and a flange 3 having a smaller diameter and a thicker wall is integrally provided at the other end.

A serpentine portion 4 and a right cylindrical portion 5 are formed in the cylindrical component 1 between the two flanges 2 and 3. A screw 7 is lightly screwed into the right cylindrical portion 5 to the extent that a tightening band 6 is fitted in advance and cannot be removed.

The water stop pad of the present invention is, for example, as shown in Fig. 3, the wall penetrating portion A of the hot water/water supply pipe for the bathroom shower, and the floor penetrating portions B and C of the drain pipes of the bathtub and washing area.
It is to be attached to each.

FIG. 4 is a longitudinal sectional front view showing an example of construction at a floor penetrating portion. The water stop pad of the present invention is fitted into the pipe P so that the wide brim 2 is in close contact with the surface of the waterproof layer 9 applied to the upper surface of the base concrete 8.

Shrink the snake part 4 so that the height to the end face of the smaller-diameter brim 3 is the design value H of the finished construction height, and tighten the band 6 with the screw 7 to form the water stop pad. is firmly fixed to the pipe P.

Finishing mortar 9 is poured, and after waiting for it to harden, an exterior material 11 such as tiles is applied so as to be flush with the end surface of the collar 3. Reference numeral 12 in the figure indicates a sealing material applied to the contact area between the end surface of the collar 3 and the outer surface of the exterior material 11.

[Effect of idea]

As mentioned above, the water stop pad for pipe penetrations of the present invention is a cylindrical part made of an elastic material with an inner diameter that tightly fits around the outer periphery of the pipe, and one end of which is tightly attached to the waterproof surface of the wall, floor, etc. a wide brim at the other end to set the thickness of the wall, floor, etc. finish that matches the surface of the exterior material such as the wall, floor, etc., and a serpentine part for length adjustment between the two brim; Since it has a right cylindrical part for attaching the tightening band, it serves as the standard for the finishing thickness.
Also the design thickness can be adjusted freely. The water stop pad will not shift along the pipe during finishing work.

The water stop pad expands and contracts in response to the contraction of the surrounding concrete, mortar, etc. and the thermal expansion of the pipe, so there is no gap between it and the mortar, concrete, etc., or between the pipe. . Therefore, there is no leakage of rainwater or drainage, and the water-stopping effect is great.

In addition, there is no need for asphalt piling to stop water, which was conventionally done on-site, making on-site work easier.

[Brief explanation of the drawing]

Figure 1 is a front view of the water stop pad for pipe penetrations of the present invention, Figure 2 is a cross-sectional plan view taken along the - line in Figure 1, Figure 3 is a perspective view of the bathroom, and Figure 4 is the water stop pad of the present invention. FIG. 3 is a longitudinal sectional front view showing the state of use of the pad. 1...Cylindrical part, 2, 3...Brim, 4...Serpentine part, 5...Right cylindrical part, 6...Tightening band, 7...
screw.

Claims (1)

[Scope of utility model registration request] It is a cylindrical part made of an elastic material with an inner diameter that fits tightly around the outer circumference of the pipe, and one end has a wide brim that fits tightly against the waterproof surface of the wall or floor, and the other end has a wide brim that fits tightly against the waterproof surface of the wall or floor. Features include a collar for setting the finishing thickness of walls, floors, etc. to match the surface of the material, and a bellows part for length adjustment and a right cylindrical part for attaching a tightening band between the two ribs. Water stop pad for piping penetrations.