JPS6128803Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fastener for temporarily fixing a heat insulating board to a wall formwork plywood so that the insulating board can be installed at the same time as concrete is poured.

In order to save energy and prevent condensation in cold regions, insulation panels made of styrofoam or urethane are installed on the inside of parts of building exterior walls that come into direct contact with the outside air, such as roofs, at the same time as concrete is poured. In this construction method, a heat insulating board is temporarily fixed with nails to the side of the plywood panel that will be in contact with the concrete, and the heat insulating board is attached to the inside of the wall at the same time as the concrete is poured using its adhesion to the concrete. .

Conventionally, as shown in FIG. 3, the nails 8 for attaching the insulation board 10 to the plywood panel 11 have a thickness of 1
It is fixed using a cardboard seat plate 1' with a diameter of about m/m to 2.5 m/m, but the paper one lacks stability when fixed, and sometimes the seat plate shown in Figure 3 As shown in Figure 2, when removing the plywood panel 11 after the concrete has cured, it is possible to remove the heat insulating board 10 along with the seat board without removing only the nails 8, and to form holes 10' in the heat insulating board. It was hot. Also, if you over-drive the nails 8 when attaching the heat insulating board 10 to the plywood panel 11, the seat plate 1' will be bent as shown in Figure 1 C, which will have a negative impact on the subsequent work. It is desirable to have measures to prevent rain, etc., from occurring during formwork construction.
When exposed to moisture, the seat board deteriorates, the nails come off the seat board, and the role of temporarily fixing the heat insulating board to the plywood panel 11 is no longer fulfilled.

The present invention solves the above-mentioned drawbacks of the conventional seat board.The disc-shaped seat board is a thin plastic seat board with a different shape, which makes it easy to remove nails when removing formwork panels. The present invention relates to a stop that is designed to be pulled out so as to securely support the heat insulating board without damaging it.

Next, the present invention will be explained according to the drawings. The seat board 1 used for fixing the heat insulating board 10 to the plywood panel 11 with nails 8 is a disc-shaped thin plastic board as shown in FIG. be.

The disk 1 consists of an outer portion A consisting of a relatively thick flange 2 and a central portion B consisting of a thinner inner portion. The outer part A has a first part on the flange part 2.
Although long holes 3 are provided as shown in FIG.

Also, the center part B has a recess 4 deep enough to fit the nail head.
The thin part is divided by radial slits 6 from the center to form a large number of fan-shaped flaps 5. These flaps 5 are
It has a thickness that supports the nail head 9, securely locks the heat insulating board 10 to the plywood panel 11, and also allows the nail head to come out when removing the plywood panel 11, and is usually made of hard material. If the flap is made of polyethylene and the diameter of the central portion B is 12 m/m, it is appropriate that the flap thickness be approximately 0.5 m/m.

When the seat plate 1 of the present invention is used, as shown in FIG.
When attaching the heat insulating board 10 to the seat plate 10, the seat board 1 will not be deformed or the heat insulating board 10 will be damaged due to excessive hammering.

Furthermore, when removing the nail, since the nail head 9 is not buried in the concrete 12, it can easily come out of the concrete 12, and a part of the heat insulating board 10 will not be taken along with it due to the deformation of the flap 5.
It's getting out.

The seat plate of the present invention is not limited to the disk shape as described above, but can also be square, hexagonal, or any other arbitrary shape.

Then, the peripheral part of the flange 2 is deformed and the fourth
As shown in the figure, a retaining spasque 2' may be provided to the heat insulating board 10, an anchor 2'' may be provided to the concrete, or the entire structure may be thinly formed and protruding portions 2 may be provided around the periphery.
The slit 6 in the central portion B can be easily formed into any shape as shown in FIGS. 5A to 5D.

The seat plate 1 is integrally molded using plastic material, and its shape can be designed relatively freely, and its manufacturing cost is low. It is possible to attach something like this to a formwork material such as a plywood panel while maintaining its thickness, and the effect is very large.

In addition, as a modification of the seat plate 1 of the present invention, the sixth to
There are seat plates 1A to 1C shaped as shown in FIG.

The seat plate 1A shown in Fig. 6 is used for headless nails 8', and the hole in the center engages and holds the upper part of the nails 8', making it easy to remove the nails when removing the plywood panel. It's starting to break out.

In the example shown in Fig. 7, a recess with a narrow entrance is provided in the center of the seat board 1B, and a heat insulating board is attached to the plywood panel using a round-headed nail 8''.
It is designed to be locked. This 2
In the example of two seat plates 1A and 1B, the seats can be reliably anchored in concrete by having the shapes of the heads 13 and 13' of the seat plates as shown in the figure.

Furthermore, the seat board 1C as shown in FIG. 8 is designed so that only the plywood panel can be removed without removing the nails 8.
When it engages with the nail head, it expands outward and acts as an anchor in the concrete.
It is held in such a way that it cannot escape from the concrete.

The present invention has a simple structure as mentioned above, and by using a seat board that is manufactured at low cost, the heat insulating board can be securely fixed to the plywood panel of the formwork, and when concrete is poured. In addition, when removing the plywood panel, it is possible to remove the nails without damaging the insulation board, which is glued to the concrete wall, and prevents obstacles during construction. It never becomes.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention.
- A sectional view taken along line A, Figure 2 A and B are explanatory diagrams showing the construction state, Figure 3 A to C are explanatory diagrams showing the construction state of the conventional example, and Figure 4 A to C are explanatory diagrams showing the construction state of the conventional example. FIGS. 5A to 5D are cross-sectional views and plan views showing modifications of the central portion, and FIGS. 6 to 8 are explanatory diagrams showing other embodiments. In the diagram 1...seat plate, 2...flange, 3...hole,
4... recess, 5... flap, 6... slit,
7... hole, 8... nail, 9... nail head, 10... heat insulation board, 11... plywood panel, 12... concrete wall, 13... head of seat board.

Claims (1)

[Scope of utility model registration request] The seat plate is shaped like a disk, and has a relatively thick outer part and a thin central part, and the central part has a recess capable of accommodating a nail head and a hole through which the nail passes through, and the central part has a hole through which the nail passes. A seat plate for temporarily fixing a heat insulating material integrally molded from a plastic material to a plywood panel, characterized by being provided with a substantially fan-shaped flap divided by a slit communicating with a hole in the seat plate.