JPH0210730Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to the nail hole structure of the temporary fixing piece in concrete-embedded temporary fixing members. When supporting a wiring box such as a let box by nailing various types of embedded temporary fixing members to the surface of the temporary frame panel, it is extremely difficult to remove the nails left behind after the temporary frame panel is removed. This invention relates to an improvement in the nail hole structure that facilitates the work, ensures the safety of workers who will be engaged in the various work that will be carried out thereafter, and enables the work to be carried out efficiently.

(Prior art) Conventionally, when constructing a concrete building, when burying electrical conduits and wiring boxes such as outlet boxes in the slab, it has been necessary to bury electrical conduits and wiring boxes, such as outlet boxes, in concrete buildings with various shapes and structures suitable for supporting them. The embedded temporary fixing member is installed and set in a predetermined position by nailing it to the surface of the temporary frame panel, which is appropriately framed. At this time, the temporary fixing member is nailed to the temporary frame panel surface using a nail that is passed through a temporary fixing piece that is connected to the temporary fixing member so that it comes into contact with the temporary frame panel surface. It is fixed to the frame panel.

(Problem that the invention aims to solve) However, with this nailing method, when the temporary frame panel is removed after the cast concrete material has solidified, the nails will remain in place. , because the sharp tip of the nail is protruding, so it can be used for decorative finishing,
When installing ceiling members for suspension support, supporting disaster prevention, air conditioning members, etc., and performing various other works,
It was extremely dangerous for workers. Therefore, even if it is desirable to remove the remaining nail, since the nail head is engaged with the fastening piece, it is extremely difficult to forcefully remove it as it is, and it is difficult to remove the nail by force. It was also extremely troublesome.

Therefore, this idea was devised in view of the various drawbacks that existed in the past as mentioned above.While the temporarily fixed state of the embedded temporary fixing member to the temporary frame panel is strong and stable, To provide a nail hole structure for a temporary fixing piece in a concrete-embedded temporary fixing member, which can be removed by an extremely simple operation after a panel is demolded, and also enables reuse of nails. It is something.

(Means for solving the problem) In order to achieve the above-mentioned purpose, in this invention, a concrete-embedded temporary fixing member buried in a concrete slab is temporarily fixed to the surface of the temporary frame panel. , a nail hole formed in a fastening piece connected to the embedded temporary fastening member for fastening, and a nail head insertion part in the form of a straight long hole through which a nail head in a collapsed state can be inserted. and a nail post accommodating part which is disposed orthogonally to the nail head insertion part and which penetrates and accommodates the nail post part. The length of the nail post accommodating part in the direction orthogonal to the nail head insertion part is such that the nail post part is laid down and the nail head part is positioned in the nail head insertion part. The length of the nail head is such that it can be removed only when the nail is turned.

(Function) By using the technical means described above, embedded temporary fixing members such as standing supports and buried supports suitable for supporting conduit pipes, wiring boxes, and other predetermined buried members are temporarily installed. When fixing to the frame panel,
This is done by inserting a nail into a nail hole formed in the fastening piece. At this time, the nail post part is penetrated and accommodated in the nail post accommodating part, and the nail head part is fastened on one side. It is assumed that the Thereafter, the concrete material is poured, cured for a predetermined period of time, and solidified to form a concrete slab, and the temporary frame panel is removed from the mold. At that time, the fastening pieces and nails are exposed on the surface of the concrete slab. However, the nail pillar part of the nail is laid down and the nail head part is forcibly tilted so as to be positioned in the nail head insertion part, and the nail is removed from the nail hole by passing through the nail head insertion part.

(Embodiments) Hereinafter, embodiments of this invention will be described with reference to the drawings.

The symbol W shown in the figure is a temporary frame panel that is appropriately framed to construct a floor, wall, or other concrete slab C, and as shown in Figure 1, a flexible electrical conduit P is placed on the concrete slab C. A stand-up support T1 is bent into a substantially U-shape on the plane to support it, and a stand-up support T1 is bent into a U-shape on the side to support a wiring box B such as an outlet box or an outlet box, as shown in FIG. The curved embedded support T2 is attached to the temporary frame panel W by the temporary fixing pieces 4 connected to these T1 and T2.
It is designed to be temporarily attached to a surface. Therefore, a nail hole 1 through which a nail S for temporary fixing is inserted is formed in the fixing piece 4 of the embedded temporary fixing member such as the rising support T1 or the embedded support T2.

As shown in the figure, the nail hole 1 itself includes a nail head insertion part 2 in the form of a straight long hole through which the nail head part S1 in the collapsed state can be inserted, and a nail head insertion part 2 arranged perpendicularly to the nail head insertion part 2 to allow the nail head part S1 in the collapsed state to pass through. It is formed to have a substantially T-shape in plan view from the nail post accommodating portion 3 that penetrates and accommodates the portion S2. Then, the nail head insertion part 2 and the nail post accommodating part 3
have an inner width that allows only the nail head portion S1 to be inserted, and the length of the nail post accommodating portion 3 in the direction orthogonal to the nail head insertion portion 2 is such that the nail head portion S2 can be laid down and the nail head can be inserted. The length of the nail head part S1 is such that it can be removed only when the part S1 is positioned in the nail head insertion part 2. In addition, when the nail S is inserted into the nail post accommodating portion 3, the nail head portion S1 does not pass through the nail hole 1, but engages with the four surfaces of the fastening piece around the nail hole 1. It is necessary that the

Next, to explain the use of this, as mentioned above, embedded temporary fixing members such as the standing support T1 and the embedded support T2 suitable for supporting the conduit P, the wiring box B, and other predetermined buried members. Temporary frame panel W
This is done by inserting the nail S into the nail hole 1 formed in the fastening piece 4, and at this time, the nail post portion S2 is penetrated and accommodated in the nail post accommodating portion 3. , and the nail head portion S1 is assumed to be engaged with the four surfaces of the fastening piece. Thereafter, concrete is poured and solidified after curing for a predetermined period of time to form a concrete slab C, and the temporary frame panel W is removed from the mold. At that time, the fixing pieces 4 and Although the nail S is exposed (see FIG. 4), the nail column portion S2 of the nail S is forced to fall down and the nail head portion S1 is forcibly tilted to be positioned in the nail head insertion portion 2 (see FIG. 5), It is removed from the nail hole 1 by passing through the nail head insertion part 2 (see Fig. 6), and at that time, if necessary, the nail post portion S2 may be held with a tool such as pliers or pliers. .

Further, as shown in FIGS. 7 to 9, the area around the nail hole 1 in the fastening piece 4 can be depressed to form a step-like recess 5, and by this recess 5, After demolding the temporary frame panel W, the appearance around the nail hole 1 can be made good when looking at the surface layer of the concrete slab C. Of course, the formation of this recess 5 is optional, and by forming a flat surface so that the entire surface of the fastening piece 4 comes into contact with the structure of the temporary frame panel W without forming the recess 5, it is possible to attach to the temporary frame panel W surface. It is possible to improve the fixing stability.

Therefore, even though the nails S used for fixing the embedded temporary fixing members T1 and T2 to the temporary frame panel W remain after the temporary frame panel W is demolded, the nails S2 are attached to the nail post portion S2. Then forcefully tilt the nail head part S1.
The nail S can be completely removed by passing it through the nail head insertion part 2. Therefore, the safety of workers can be ensured during subsequent decorative finishing, installation of ceiling members for suspension support, disaster prevention, support of air conditioning members, and other various operations.
In addition, it requires troublesome work such as cutting around the nail hole 1, forcibly bending the fastening piece 4 to remove it in the opposite direction, and cutting the nail S itself. This is extremely simple and contributes to improving work efficiency, and the nail S can be reused, which is convenient.

In particular, since the nail head insertion part 2 and the nail post accommodating part 3 are formed to have a substantially T-shape in plan, the shape itself is simple and can be formed by drilling in the same way as a conventional round shape. Since the pillar accommodating portion 3 penetrates and accommodates only the nail post portion S2, the nail head portion S1 tightly engages around the nail hole 1, and the engagement and fastening effect to the surface of the temporary frame panel W is not weakened.

In addition, the nail head insertion portion 2 includes a nail head portion S in a collapsed state.
1 is in the shape of a straight long hole that can be inserted, and
The nail head insertion part 2 and the nail post accommodating part 3 each have an inner width that allows only the nail head part S1 to be inserted, and the length of the nail post accommodating part 3 in the direction orthogonal to the nail head insertion part 2 is Since the nail head portion S1 is set to a length that can be removed only when the nail post portion S2 is laid down and the nail head portion S1 is positioned in the nail head insertion portion 2, the 4 sides of the fastening piece and the top surface of the nail head portion S1 are In the state where are parallel, the nail head part S1
When the nail is tilted in the nail post accommodating part 3 without being removed from the nail hole 1, the nail head part S1, which had been in an engaged state until then, fits into the nail head insertion part 2 and passes through. This allows the entire nail S to be removed.

Note that the nail hole structure according to this invention is not limited to the case where the nail hole structure is formed in the fastening piece 4 of the illustrated standing support T1 or buried support T2, but is also applicable to a temporary frame to be buried in the concrete slab C. It has the versatility to be used as a fixing means for various types of concrete-embedded temporary fixing members fixed to the surface of the panel W, and has an extremely wide range of applications.

[Brief explanation of the drawing]

The drawings show examples of this invention; Figure 1 is a perspective view of the device in use when it is applied to a starting support for setting up conduit pipes, and Figure 2 is a buried support for supporting wiring boxes. FIG. 3 is a perspective view of the main part, FIGS. 4 to 6 are perspective views showing the procedure for removing the nail, and FIG. 7 is a perspective view of another embodiment. , FIG. 8 is a cross-sectional view of the fixed state, and FIG. 9 is a perspective view of the nail when it is removed. B... Wiring box, C... Concrete slab, P... Conduit, S... Nail, S1... Nail head portion, S2... Nail pillar portion, T1... Standing support, T2... Buried support Tools, W...Temporary frame panel, 1
... Nail hole, 2 ... Nail head insertion part, 3 ... Nail post accommodating part, 4 ... Fastening piece, 5 ... Recess.

Claims (1)

[Scope of utility model registration request] A concrete-embedded temporary fixing member to be buried in a concrete slab is temporarily fixed to the temporary frame panel surface using a nail hole drilled in a fastening piece connected to the embedded temporary fixing member. A nail head insertion part in the shape of a straight long hole through which the nail head part in a collapsed state can be inserted, and a nail post accommodating part which is arranged perpendicularly to the nail head insertion part and penetrates and accommodates the nail post part, and there is a plane approximately T. The nail head insertion portion and the nail post accommodating portion each have an inner width that allows only the nail head portion to be inserted therethrough, and the nail post accommodating portion is formed in a direction perpendicular to the nail head insertion portion. A concrete-embedded temporary fixing member characterized in that the length of the part is such that the nail head part can be removed only when the nail post part is laid down and the nail head part is positioned in the nail head insertion part. Nail hole structure of temporary fastening piece.