JPS5930561Y2 - Formwork for forming buried holes for distribution board cabinets - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) This invention prevents concrete from entering the ends of conduit pipes during the burying work of the distribution panel cabinet, and also prevents the burying hole for burying the distribution panel cabinet. This invention relates to a formwork for forming holes for embedding a distribution board cabinet, which can be easily formed without requiring any effort.

(Prior art) Conventionally, when burying a distribution board cabinet in a concrete building, as shown in Figure 6, a temporary frame A larger than the distribution panel cabinet was attached in advance to the curtain plate B of the concrete formwork. After inserting one end of the conduit P into the conduit holder C fixed to the outer surface of the temporary frame A, concrete is poured into the concrete form, and after the concrete hardens, the curtain plate B and the temporary frame A are placed. They were removed one by one, and the distribution board cabinet was buried in the hole formed by the temporary frame A.

Therefore, there is a disadvantage that it takes time and effort to assemble the temporary frame A and to remove it after the concrete IJ has hardened, and it is not economical because the temporary frame A cannot be reused after being removed.

(Structure of the invention) In order to eliminate the above-mentioned drawbacks, the present invention provides dovetail-shaped or T-groove-shaped fitting grooves on the top and bottom surfaces or left and right sides of a block that is slightly larger than the distribution board. A conduit holder that allows the board to be inserted into the groove in a freely retractable manner, protects the ends of the conduit, and holds the conduit at the required spacing is fixed on the board to secure the installation hole in the distribution board cabinet. Examples will be described below.

In FIG. 1, a dovetail or T-groove fitting groove 2 is formed on the upper and lower surfaces of a three-dimensional block 1 that is slightly thicker than the distribution panel cabinet, and the wide part 2a of this fitting groove 2 is The substrates 3 are formed so as to be removable and fit together.

A conduit holder 4 that retractably fits into the narrow portion 2b of the fitting groove 2 is made of foamed plastic such as styrofoam into which the conduit P can be pierced, and this conduit holder 4 is attached to the substrate 3. Glue and fix.

In the above embodiment, the fitting grooves 2 are provided on the upper and lower surfaces of the block 1, but they may of course be provided on the left and right sides of the block 1 in accordance with the connection of the conduit P to the distribution panel cabinet. .

In addition, fitting grooves 2 are formed in advance on the upper and lower and left and right side surfaces of the block 1, and these fitting grooves 2 are formed in unnecessary fitting grooves 2.
It is also possible to close the fitting groove 2 by fitting a fitting piece 5 having a shape corresponding to the above.

The block 1, the fitting groove 2, and the board 3 are the same as those in the above-mentioned embodiment, but the conduit holders are different, and as shown in FIG. 6 pre-drilled plastic or metal conduit holder 4'
Then, this conduit holder A is screwed or nailed to the board 3 in correspondence with each conduit P.

Next, in another embodiment of the conduit holder, as shown in FIG. 5, when a coupling 7 is fitted to the end of the conduit P and this coupling 7 is embedded in the concrete D, A conduit holder 4' having an insertion hole 8 into which the coupling 7 is inserted is made, and this conduit holder 1 is screwed or nailed to the substrate 3.

(Operation of the invention) To explain the operation of the invention, as shown in Figs. 2 and 3, the block 1 is fixed by nailing to the curtain board B of the concrete form, and the conduit holder 4 is attached to the - side. The board 3 on which is fixed is inserted into the fitting groove 2 from the lateral direction.

A conduit in which the conduit P is stuck into a conduit holder 4 so as to maintain a required interval, the end face of the conduit P is brought into contact with the substrate 3, and the conduit P is fixed to a reinforcing bar placed in a concrete formwork. Since the holder 4 is made of foamed plastic such as expanded polystyrene, it can be easily penetrated to form the insertion hole 10 even if a hole for inserting the electric conduit P is not previously formed.

There are foamed plastic scraps 11 at the tip of the conduit P.
has entered.

In this state, concrete D is poured into the concrete formwork and the concrete D is cured. After the concrete D has hardened, the curtain plate B is removed and the burial hole 12 created on the outside of the block 1 by pouring the concrete D. Remove the block 1 from the conduit P, and then remove the conduit holder 4 from the conduit P.
is pulled out in the axial direction, and the foamed plastic scraps 11 stuck at the tip of the electric conduit P are taken out.

A distribution board cabinet (not shown) is inserted into the buried hole 12 and necessary wiring work is performed.

In the case of the embodiment shown in FIG. 4, a conduit holder 4' is attached to the base plate 3 for each conduit P, the conduit P is inserted into the insertion hole 6 of the conduit holder A, and the conduit P is inserted into the concrete formwork. Concrete IJ-)I) is poured into the hole to form a burial hole.

In the case of the embodiment shown in FIG. 5, as in the case of the previous embodiment, a conduit holder 4' is attached to the substrate 3 for each conduit P, a coupling 7 is attached to the tip of the conduit P, and this Fit the coupling 7 into the conduit holder 4'' to keep each conduit P at the required spacing, and place the conduit D inside the concrete frame.
to form a buried hole 12''-t,-.

(Effect of the invention) The present invention forms a dovetail or T-groove fitting groove on at least one of the top, bottom, left and right sides of a block corresponding to a distribution board cabinet, and a board that fits into this fitting groove. A distribution board cabinet is created by fixing a conduit holder that protects the ends of the conduit and preventing concrete from entering, fixing the block to the base of the concrete formwork, and pouring concrete into the concrete form. Since the hole is formed, it is easy to install and remove from the concrete formwork without the need to make a temporary frame using board material as in the conventional method, and the flock can be used repeatedly, making it economical. Become.

This conduit holder has the effect of being able to be used as a gauge when drilling holes in the distribution panel cabinet after removal, allowing accurate drilling.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention - an embodiment, Fig. 2 is a front sectional view showing the state of use, Fig. 3 is a sectional view taken along the XX line in Fig. 2,
FIG. 4 is a perspective view of another embodiment, FIG. 5 is a sectional view showing another embodiment of the conduit holder in use, and FIG. 6 is a perspective view of the prior art. (Explanation of symbols of main parts), 1...Block,
2... Fitting groove, 3... Board, 4, 4'
, 4''--Conduit holder, P... Conduit.

Claims (1)

[Scope of utility model registration request] A fitting groove 2 is formed on at least one of the upper and lower surfaces and left and right side surfaces of the block 1 corresponding to the distribution panel cabinet,
The circuit board 3 is removably inserted into the fitting groove 2, and a conduit holder 4, 4' or l for protecting and holding one end of the conduit P is attached to the circuit board 3. Formwork for forming holes for installing distribution board cabinets.