JPS6022729Y2 - Formwork for forming buried holes for distribution board cabinets - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) The invention relates to a formwork for forming holes for embedding a distribution board cabinet.The purpose of the invention is to provide a formwork that is easy to assemble and disassemble and can be used repeatedly. It is to be.

(Prior art) Conventionally, in order to bury a distribution board cabinet in a concrete building, a temporary frame A larger than the distribution panel cabinet is attached to the curtain plate B of the concrete formwork in advance, as shown in Fig. 3. After inserting one end of the conduit P into the conduit holder C fixed to the outer surface of the temporary board A, concrete is poured into the concrete form, and after the concrete hardens, the curtain board B1 and the temporary frame C are removed one after another. , the distribution board cabinet was buried in the hole formed by temporary board A.

This temporary board A is made of board material nailed together, so assembling the temporary board A is troublesome.

In addition, since the temporary board A is nailed into one piece, in order to take out the temporary board A after the concrete has hardened, the integrated temporary board A must be taken apart.
It also took a lot of time to remove it.

Furthermore, since the temporary board A after being removed is often loose, it cannot be reused and is therefore uneconomical.

(Structure of the invention) The present invention has been made in order to eliminate the above-mentioned drawbacks, and its gist is that a corner has a pair of side surfaces and a curtain plate contact surface that are adjacent to each other and orthogonal to each other. A fitting groove is provided on each side of the block perpendicular to the curtain plate contact surface,
Place these corner blocks in the four corners of the rectangle corresponding to the cabinet embedding holes so that the upper, lower, left, and right insertion grooves face each other, and fix each corner block to the curtain plate using nails. The frame body is inserted into the fitting groove and assembled into a frame shape.

An embodiment of the invention is shown in FIGS. 1 and 2. FIG.

A corner block 1 made of resin or wood has a pair of side surfaces 2 that are orthogonal to each other, and a bottom plate contact surface 4 and a curtain plate contact surface 5 that are perpendicular to each side surface 2 and parallel to each other. It is cubic or rectangular.

Each side surface 2 is provided perpendicularly to the insertion groove 3 and the curtain plate contact surface 5, respectively.

Further, nail holes 6 are provided perpendicularly to the curtain plate abutting surface 5 at opposite corners of the corner block 1.

In order to form the buried holes of the distribution board cabinet using this corner block 1, place the four corner blocks 1 at the four corners of the rectangle corresponding to the buried holes of the distribution board cabinet. Insert the frame plate 7 into each fitting groove 3 of the corner block 1 facing oppositely, and make the bottom plate 8 come into contact with the bottom plate contact surface 4 of the corner block 1. The corner blocks 1 at the four corners and the bottom plate 8 are fixed by driving nails 9 therethrough.

At this time, if necessary, anchor bolts 10 for fixing the distribution board cabinet are inserted into insertion holes (not shown) provided in the left and right frame plates 7 for temporary fixation.

The frame assembled in this way is brought into contact with the curtain plate B of the concrete formwork (the curtain plate contact surface 5 of the corner block 1 and the curtain plate B are in contact with each other), and the nail hole of the corner block 1 is 6
The corner blocks 1 at the four corners and the curtain board B are fixed by driving blank nails 9' into the curtain board B.

In addition, a conduit holder 11 made of a foamed resin plate such as styrofoam is closely attached to the upper and lower frame plates 7, and if necessary, the tip of the conduit P is stuck in a predetermined position of this conduit holder 11 by adhesion. The end is brought into contact with the frame plate 7.

If concrete is poured into the concrete formwork in this state, curtain plate B is removed after the concrete hardens, and all corner blocks 1 are removed as a unit by removing curtain plate B, the formed cabinet The four frame plates 7 fixed to the inner circumferential wall of the burial hole can be removed by slightly reducing the size in a direction substantially perpendicular to the plate surfaces.

In addition, if all or part of the corner block 1 remains after removing the curtain plate B, first remove the corner block 1.
is removed by pulling it out in a direction perpendicular to the concrete wall surface, and then each frame board 7 is removed in the same manner as above.

If the formwork is removed in this way, even if the anchor bolts 10 for fixing the cabinet are inserted into the left and right frame boards 7 and fixed, the frame boards 7 can be removed.

Therefore, by removing the curtain plate B and the formwork, a hole for embedding the distribution board cabinet is formed in the concrete wall surface.

When the anchor bolt 10 is used, the anchor bolt 10 protrudes from the concrete wall surface and is used for fixing the distribution board cabinet, etc.

Then, the distribution board cabinet is buried in the formed distribution board cabinet embedding hole, and the remaining gap is filled with mortar.

Naturally, the void created by the removal of the corner block 1 is filled with mortar.

In the above embodiment, a case where a buried hole is formed with a part of the concrete wall recessed was explained, but in the case of a buried hole that penetrates a concrete wall, a bottom plate is not used and a hole is formed between the front and rear curtain plates B. It can be used by sandwiching the formwork.

Further, if the corner block 1 is made of wood, there is no need to drill the nail holes 6 in advance.

(Effect of the invention) The present invention forms a formwork by arranging corner blocks at the four corners of the formwork and inserting frame plates into the insertion grooves provided on the left and right and up and down opposing sides of the corner blocks. This eliminates the need for the traditional method of creating a temporary frame using board materials by nailing, and allows for quick and easy installation and removal of the concrete formwork, while eliminating the need for parts that would be damaged during removal. Since there is no waste, it can be reused, which helps reduce costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a corner flock 1, FIG. 2 is a perspective view of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of the prior art. Explanation of codes of main parts, 1: Corner block, 2: Side surface of corner block, 3: Fitting groove, 4: Corner block bottom plate contact surface, 5: Corner block curtain plate contact surface, 7: Frame plate , 9': Nail.

Claims (1)

[Scope of utility model registration request] A pair of side surfaces 2 that are adjacent to each other and are perpendicular to each other
A fitting groove 3 is provided perpendicularly to the curtain plate contact surface 5 on each side surface 2 of a corner block 1 having a curtain plate contact surface 5 and a cover plate contact surface 5, and this corner block 1 is placed at the four corners of a rectangle corresponding to the cabinet embedding hole. The upper and lower and left and right insertion grooves 3 are arranged so as to face each other, and each corner block 1 is fixed to the curtain plate B via a nail 9', and the frame plate 7 is inserted into the insertion groove 3 of each corner block 1. Formwork for forming holes for installing distribution board cabinets by inserting and assembling them into a frame shape.