JPS63103164A - Method for mounting metal fittings of ventilation port - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for attaching a vent fitting to a concrete or cleat foundation or a concrete wall surface of a building, and to a formwork for carrying out this method.

(Prior art) Ventilation vents are often installed in the concrete foundations or concrete walls of buildings, and in order to prevent birds and animals from entering the vents, the front view is shown in Figure 1. Ventilation opening fittings 1 are often installed in the form of a grid or arabesque pattern.

However, conventionally, when attaching ventilation fittings to a ventilation opening, a box-shaped formwork is first held between a pair of weir plates, and concrete is poured between the pair of weir plates and allowed to mature to form a hole in the shape of the box-shaped formwork. After creating a wall surface with a thickness of 100 mm, place a vent fitting on one side or inside the thick part of the hole created by this, and then apply mortar to one side of the wall or fill the end of the vent fitting with mortar. The method used was to embed it in the thick part.

(Problem to be solved by the invention) However, with the conventional method, after the concrete of the wall matures and the weir board is removed, mortar is mixed again and ventilation opening fittings are installed, which is double work. In particular, in order to install the ventilation hole fittings inside the thick wall of the hole, the ventilation hole fittings must be placed against the thick wall of the hole as described above, so this is compatible with the fact that the ventilation hole is usually narrow. The work was difficult, especially when the wall was large, and two workers had to work together from both sides of the wall to embed the vent fittings with mortar.

Even so, ventilation fittings that have been reinstalled with mortar on concrete that has aged and hardened tend to peel off the adhesive surface between the mortar part and the previously cast concrete wall, and as a result, due to weathering over time, etc. The adhesive surface may peel off and the ventilation fitting may fall, causing an accident, or allowing vermin such as rats to enter the building.

(Means and effects for solving the problems) The present invention solves the inconveniences of the conventional method of attaching a ventilation opening to a concrete wall, and also eliminates the inconvenience of the conventional method for attaching a ventilation opening to a concrete wall. The purpose of this product is to provide a construction method that is installed by cutting into concrete, and a formwork for implementing the construction method. Using a pair of formworks that have bodies shaped like ventilation holes on both sides of the opening fittings, the backs of the pair of formworks face each other, and between them a part of the ventilation opening fittings is inserted from the back side of the formwork. A method for installing lattice fittings for ventilation openings, in which a piece temporarily fixed using the mounting element so as to protrude is held between a pair of weir plates, concrete is poured between the pair of weir plates, and the formwork is removed after aging. and a formwork having the above-mentioned shape and ventilation opening fitting mounting elements for use in the implementation thereof, which enables the ventilation opening end to be installed by cutting into the inside of the concrete poured for forming the wall surface. As with the above method, the ventilation opening fittings can be installed in such a way that they do not easily fall off due to weathering, etc., and the work process is extremely simplified.

(Example) The present invention will be described in detail below using examples shown in the drawings.

FIG. 2 is a front view showing a completed state in which the present invention is applied to a concrete foundation of a wooden building. That is, ゛ A cracked stone 3 is placed on top of the cut ground 2, a foundation 5 is built on top of which concrete 4 is poured, and the foundation is secured using anchor bolts 6 that have been embedded in the foundation 5 in advance. 7, a ventilation hole 8 is provided for ventilation under the floor of the building, and the ventilation hole fitting holder shown in Figure 1 is attached to the ventilation hole 8 for the above purpose. Therefore, the present invention is a construction method for attaching a ventilation hole fitting inside a ventilation hole in this way, and a formwork therefor.

FIG. 3 is a perspective view showing one embodiment of the formwork used to carry out the present invention. In this embodiment, the pair of formworks 9-' have the same shape, and the back side 10 of the formwork main 9-' has an oblong hole 1 which is a temporary fixing element for the vent fitting.
1.11' is provided, and the body part 12.12' of the formwork is constructed in a shape that will become the ventilation openings on both sides of the ventilation opening fittings in the ventilation opening that will be completed later.

As shown in the figure, with the back faces 10 of a pair of formwork and formwork facing each other, the ventilation opening fitting 1 is attached between the two using the horizontal holes 11 and 11' for temporary fixing, and using thumb screws 14 and 14'. Temporarily fasten. Of course, the structure of the temporary fixing element and its mounting position are not limited to this, and a part of the equipment for temporarily fixing the ventilation hole fitting may be provided near the back surface 10 of the formwork 9.9'.

Therefore, when temporarily fixing the ventilation opening fitting 1 to the back surface 10 of this formwork unit, the end of the ventilation opening fitting 1 should protrude beyond the back side 10 of the formwork as shown in FIG. 15. is necessary.

In this embodiment, the entire formwork main body is constructed by punching and pressing an iron plate, and the weir plate (the fourth
Although magnets 13 and 13' are attached to the magnets 13 and 13' in order to magnetically attach them to the weir plate (Fig. 17) and hold the position within the weir plate, it goes without saying that the material of the formwork and the magnets are not requirements of this invention. .

In addition, in the embodiment shown in the same figure, a part of the back lO of the formwork 1,
The part shown in 6 is a window-like opening without an iron plate. This is to reduce the weight of the formwork, as the poured concrete will not penetrate into this area, so there is no need to cover it with iron plates like in other areas. Although it is left open to make it easier to see whether the ventilation opening is open or not, if there is a risk that concrete may enter this area due to the shape of the ventilation opening fittings, etc., this area should be sealed.

The above is an explanation of the formwork of the present invention and how the vent fittings are temporarily fixed thereto. Next, the concrete pouring process performed using this formwork will be explained.

FIG. 4 is a cross-sectional view showing a state in which the construction method of the present invention is applied to a building foundation using a formwork capable of implementing the present invention,
A footing is formed by pouring a split stone 3 on top of the cut ground 2 and pouring concrete 4, and a pair of weir plates 17 and 17' are placed on top of the footing, and a ventilation hole is installed between the two. - The vent fitting 1 temporarily fixed with the thumb screw 14 is placed between the formworks 9 and 9' placed back to back as described above. In the embodiment shown in the figure, formwork retainers 18, 18' are provided and adjustment screws 19 are provided.
．． 19', the formwork is positioned at a desired position within the pair of weir plates 17 and 17', but the pair of weir plates 17 and 17' are firmly held by a weir plate holding member (not shown). Since the formwork is held in place, the position of the formwork can be adjusted by positioning the formwork and work' between the weir plates 17 and 17' and then tightening the weir plate 17 and 17' with the weir plate holding members. Since the mold can be held so that it does not shift, the formwork holding material as described above is not necessarily required.

After going through the above steps, the above weir plate 17.17'
For example, if fresh concrete is poured to the height shown by the dotted line 20 in the figure, the fresh concrete will be poured into the formwork 9.9'.
The ventilation hole is formed by recessing the end 15 of the ventilation hole fitting as shown in FIG. If the construction is removed, the ventilation opening fitting will be installed within the thickness of the wall-like object such as the foundation that has the ventilation opening, and its end will dig into the concrete foundation. .

(Other Embodiments) It goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be implemented not only on concrete foundations but also on vent fittings on the walls of concrete buildings, and on formworks. Even if the shape is other than the above example, for example, as long as the mounting position of the ventilation hole fitting is within the wall thickness of the wall-like object that has the ventilation hole, it does not necessarily have to be located at the center of the wall thickness. The shape of the formwork may be configured according to the desired shape of the ventilation hole, such as configuring the shape of the formwork so that it is installed at a position biased to one side of the vent. By configuring the vent fittings so that the metal fittings are attached to the top and both sides slope downward, rainwater, etc. can be quickly removed from the vicinity of the ventilation fittings, which prevents corrosion of the ventilation fittings due to rainwater, etc. Seems to be in good condition.

Although the provision of the formwork holding material 18 and the window-like opening 16 on the back surface described in the above-mentioned embodiments are not essential requirements of the present invention, the inventors have experimented with them and believe that they are convenient. So let me introduce it to you.

(Effects of the Invention) As described above, the present invention saves the process by attaching the ventilation hole fittings at the same time as the concrete pouring process, and also because the ends of the ventilation hole fittings are installed by digging into the poured concrete. This is an extremely efficient construction method with less risk of it coming off due to weathering compared to the conventional method of attaching it with mortar after concrete has matured, and the structure of the formwork contributes to the extremely efficient construction method described above. Moreover, it can be said that it is an extremely convenient formwork because the vent fitting can be temporarily fixed in the desired position with the temporary fixing element of the vent fitting and installed so that the end part bites into the concrete of the wall. .

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of the ventilation opening fitting used in the present invention, Figure 2 is a front view showing the completed state after implementing the present invention on the foundation of a wooden building, and Figure 3 is the construction method of the present invention. FIG. 4 is a perspective view showing the formwork used to carry out the invention and a state in which the vent fittings are temporarily fixed using the formwork, and FIG. 4 is a sectional view showing the state in which a concrete foundation is being constructed by carrying out the invention. In the diagram 1... Ventilation opening fittings, main'...
・Formwork 10 Back side of formwork 11.11'...Horizontal hole that is an element for attaching ventilation opening fittings 12...Body part 14...Engraving of the weir board drawing (inside) Q: Two complete changes) Fig. 2 Commissioner of the Patent Office Black 1) Mr. Akihiro, Indication of the case Patent Application No. 249366 of 1988, Title of the invention Method for installing ventilation opening fittings, Relationship with the case of the person making the amendment Patent applicant address: 2-14-17 Kotesashi-cho, Tokorozawa City (voluntary), Subject of amendment: Drawings, Contents of amendment: As shown in the attached drawings, List of attached documents

Claims (2)

[Claims] (1) Using a pair of formworks that have temporary fixing elements for ventilation opening fittings near the back side and bodies shaped to serve as ventilation openings on both sides of the ventilation opening fittings in the concrete wall, Hold the vent fitting between the pair of weir plates, which is temporarily fixed using the mounting element so that a part of the vent fitting protrudes from the back side of the formwork, between the two with their back faces facing each other, and By removing the formwork after pouring concrete and allowing it to mature, the ventilation opening fittings are installed within the wall thickness of the wall-like object having the ventilation opening, and the ends thereof bite into the concrete wall. A method for installing grid metal fittings for ventilation holes. (2) A body having a temporary fixing element for a ventilation hole fitting near the back surface and having a shape that serves as a ventilation hole on both sides of the ventilation hole fitting in a concrete wall, for use in carrying out the invention of claim (1). Concrete formwork with sections.