JP4187253B2 - Curing cap construction method and curing cap - Google Patents

Description

  The present invention relates to a curing cap that is attached to a through-hole provided in a floor slab such as a floor sleeve, and a construction method thereof.

  In a normal construction site, concrete is placed in a position where various pipes such as ducts or wiring are passed, with a form made of paper cylinders, etc., and after the curing progresses to a certain extent And a through hole (hereinafter, also simply referred to as a floor sleeve) is formed in the removed portion. At this time, since a so-called floor sleeve is opened in the floor slab after the formwork is removed, a lid called a curing cap is attached to the opening. As the curing cap, a cap having a dimension matching the opening is prepared and used with a plywood board or the like, or a ready-made product designed to have a predetermined dimension is used.

  However, the conventional curing cap has the following problems. In other words, the curing caps made of plywood are not only cumbersome to make, but are only placed on the floor sleeve so as to cover the opening of the floor sleeve. There was also a problem that it occurred.

In addition, a ready-made curing cap must be selected according to the size and shape of the sleeve, and there is a problem that it is difficult to adapt. In particular, the sleeve shape may collapse, and ready-made products are very difficult to adapt to such a collapsed shape. As a result, the sealing performance of the ready-made product is inevitably low. During the period when the curing cap is required, the roof is not yet constructed, and therefore the sealing property of the curing cap is extremely important. If the sealing cap is poorly sealed, rain may enter the downstairs.
JP 9-144193 A

  Therefore, a main problem of the present invention is to provide a curing cap that can be easily constructed, has high compatibility with the size and shape of the hole, and is excellent in hermeticity, and a construction method thereof.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A method of attaching a curing cap to a through hole provided in a floor slab,
Attach the bag body inlet part to the attachment hole formed through the support body in the substantially central part of the bag body that is made up of thick balloons so that it can be expanded and contracted by supplying and discharging fluid from the inlet part to the inside. Thus, the step of suspending the bag body from the support body in the through hole,
Supplying fluid into the bag body in the through hole, and inflating the bag body to close the through hole,
A curing cap construction method characterized by this.

(Function and effect)
In the present invention , the bag body is placed in the through hole while the bag body is suspended from the support body by attaching the inlet portion of the bag body to the attachment hole formed through the substantially central portion of the support body , The curing cap can be attached simply by supplying the fluid from the inlet portion and expanding the inside. Under the present circumstances, the curing cap which consists of a bag body fits the dimension shape of the through-hole inner surface by expansion | swelling. Therefore, even if the size and shape of the through hole is broken, or the inner surface of the hole has large irregularities, it can be reliably and easily closed even when it is not possible to cope with ready-made products, and the sealing performance is higher than before. Can be secured. In addition, the curing cap made of a bag can be removed and reused easily if the internal fluid is discharged after use.

<Invention of Claim 2>
A curing cap attached to a through-hole provided in the floor slab,
A bag composed of thick balloons so that it can be expanded and contracted by supplying and discharging fluid from the inlet to the inside;
A mounting hole is formed in the substantially central portion, and by attaching the inlet portion of the bag body to the mounting hole, the supporting body is supported in the through hole while the bag body is suspended ,
The bag body supported in the through hole is inflated, and the inflated bag body is configured to close the through hole.
Curing cap characterized by that.

(Function and effect)
The same effect as that of the first aspect of the invention can be achieved. Further, since the bag body is supported in the through hole by the support body, there is an advantage that the work for expansion and contraction can be performed reliably and easily.

<Invention of Claim 3>
The curing cap according to claim 2, wherein the bag is made of an elastic stretchable material.

(Function and effect)
The bag body is not particularly limited as long as it can at least expand and contract and close the inside of the through hole. However, it is particularly preferable to form the bag body with an elastic stretchable material such as rubber because the adhesion to the inner surface of the through hole can be increased.

<Invention of Claim 4>
The curing according to claim 2 or 3, wherein the support has a shape spanning the upper edge of the through hole, and the bag is suspended from a portion of the support corresponding to the inside of the through hole. cap.

(Function and effect)
If comprised in this way, it can prepare by only putting so that a support body may be hung on the upper edge of a through-hole, inserting a bag body in a through-hole from the floor, and an operation | work is easy.

<Invention of Claim 5>
The curing cap according to any one of claims 2 to 4, wherein the support is a plate-like body that covers the entire opening of the through-hole, and has a hooking portion on the opposite side to the through-hole side. .

(Function and effect)
If the bag body is exposed at the opening of the through hole, the bag body may be damaged, which is not preferable. Therefore, it is preferable to form a plate that covers the opening of the through hole with the support. In this case, since it becomes difficult to remove the support, it is preferable to provide a hooking portion on the opposite side of the support from the through hole side.

  As described above, according to the present invention, there are advantages such as easy construction, high compatibility with the dimensional shape of the hole, and excellent sealing performance.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 to 4 show one construction form of a curing cap according to the present invention. The curing cap is composed of a support 1 and an inflatable bag 2 attached to the support 1.

  The support 1 is a flat plate having a size capable of covering an opening of a floor sleeve 3 (through hole) provided in the floor slab 4. Such a support 1 can be formed of various materials such as an iron plate, a wooden plate, and a synthetic resin plate. In order to facilitate the removal of the support 1, it is preferable to provide a hook portion 1 a on the upper surface of the support 1 as shown in FIG. 5. The support 1 is preferably coated with a fluorescent color at least on the upper surface for work safety. The shape of the support 1 is not limited to a plate shape, and can take various forms such as a rod as long as the bag 2 can be supported in the floor sleeve 3.

  On the other hand, the bag body 2 has a shape having an inlet 2a for supplying and discharging fluid to and from the inside. The bag body 2 can be formed of a flexible resin such as polypropylene, but is preferably formed of an elastic elastic material such as rubber. For simplicity, a commercially available thick balloon can be used. The bag body inlet 2a is provided with an opening / closing mechanism such as a check valve, a stopper, and a cock. As such an opening / closing mechanism, various valve bodies employed in rubber or vinyl inflatable balls, boats, etc. can be used in addition to various balloon bodies.

  The structure for attaching the bag body 2 to the support body 1 is not particularly limited as long as the function of the present invention can be exhibited. However, as shown in the drawing, an attachment hole is formed through the substantially central portion of the support body 1. It is preferable to attach to the attachment hole the entrance 2a portion of the bag body, in particular, a strong portion such as a valve body, by attaching it with an adhesive tape or tying it with a string. In this case, it is possible to work on the bag inlet 2a from above the support 1.

  At the time of construction, first, as shown in FIG. 1, the bag body 2 is inserted into the floor sleeve 3, and the support body 1 is placed so as to cover the entire upper opening of the floor sleeve 3. The support 1 is stretched over the edge of the opening of the floor sleeve 3, and the bag 2 is suspended from the support 1 in the floor sleeve 3.

  When this installation is completed, as shown in FIG. 2, the compressor 5 is connected to the inlet 2a of the bag body 2 to supply air into the bag body 2, and the bag is suspended in the floor sleeve 3. The body 2 is inflated, and the outer surface of the bag body 2 is brought into close contact with the inner peripheral surface of the floor sleeve 3. If air is supplied sufficiently, the supply is stopped and the opening / closing mechanism of the bag body inlet 2a is closed. When the opening / closing mechanism is a check valve, the air supply is automatically closed when the air supply is stopped. In the present invention, in principle, the fluid supplied into the bag body 2 may be a liquid such as water, but in practice, a gas such as air is preferable. The inflated bag body 2 fits as a curing cap regardless of whether the inner surface of the floor sleeve 3 is uneven, and seals the floor sleeve 3. Further, the support body 1 plays a role of protecting the bag body 2 in the floor sleeve 3.

  When the curing cap is no longer needed, the air inside the bag body 2 is discharged and contracted as shown in FIG. In the example shown in FIGS. 2 and 3, a flap valve type opening / closing mechanism is provided at the inlet 2 a of the bag body 2, and the hollow needle-like member 6 is inserted from the inlet of the bag body 2 when supplying and discharging air. It is assumed that the valve body is pushed open and the supply and discharge are performed through the hollow needle-like member 6 in this state, but various forms such as opening a plug according to the opening / closing mechanism can be adopted.

  If the bag 2 is contracted, the floor sleeve 3 can be opened by lifting the support 1 as shown in FIG. In the illustrated embodiment, since the hooking portion 1a is provided on the upper surface of the support 1, even the flat support 1 can be easily removed by hooking and lifting the hook 7 on this portion. Thus, the curing cap of the present invention can be restored and reused easily by discharging the fluid.

  The present invention can be used without any limitation as long as the through hole of the floor slab is closed during construction, and can be applied even when the inner surface of the through hole is formed by, for example, a ready-made cylindrical body. is there. Moreover, it can also construct only with a bag body, without using a support body.

It is a longitudinal cross-sectional view which shows the construction point of this invention roughly. It is a longitudinal cross-sectional view which shows the construction point of this invention roughly. It is a longitudinal cross-sectional view which shows the construction point of this invention roughly. It is a longitudinal cross-sectional view which shows the construction point of this invention roughly. It is VV sectional drawing of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Support body, 2 ... Bag body, 3 ... Floor sleeve, 4 ... Floor slab, 5 ... Compressor, 6 ... Hollow needle-shaped member, 7 ... Hook.

Claims (5)

A method of attaching a curing cap to a through hole provided in a floor slab,
Attach the bag body inlet part to the attachment hole formed through the support body in the substantially central part of the bag body that is made up of thick balloons so that it can be expanded and contracted by supplying and discharging fluid from the inlet part to the inside. Thus, the step of suspending the bag body from the support body in the through hole,
Supplying fluid into the bag body in the through hole, and inflating the bag body to close the through hole,
A curing cap construction method characterized by this. A curing cap attached to a through-hole provided in the floor slab,
A bag composed of thick balloons so that it can be expanded and contracted by supplying and discharging fluid from the inlet to the inside;
A mounting hole is formed in the substantially central portion, and by attaching the inlet portion of the bag body to the mounting hole, the supporting body is supported in the through hole while the bag body is suspended ,
The bag body supported in the through hole is inflated, and the inflated bag body is configured to close the through hole.
Curing cap characterized by that. The curing cap according to claim 2, wherein the bag is made of an elastic stretchable material. The curing according to claim 2 or 3, wherein the support has a shape spanning the upper edge of the through hole, and the bag is suspended from a portion of the support corresponding to the inside of the through hole. cap. The curing cap according to any one of claims 2 to 4, wherein the support is a plate-like body that covers the entire opening of the through-hole, and has a hooking portion on the opposite side to the through-hole side. .

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