HUT70383A - Shutters structure for forming of hatch, mainly cellar window - Google Patents

Abstract

The shuttering apparatus for producing wall openings such as cellar windows or the like comprises a shuttering insert (2) which can be installed into shuttering (1). In order to provide a re-useable shuttering apparatus which can be inserted efficiently, the shuttering insert (2) is subdivided, along the periphery, into two part-inserts (2a, 2b). Said part-inserts (2a, 2b), which are releasably connected to one another, each have a cross-section which narrows from the outer edge (5a, 5b) to the parting joint (6). <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to a shuttering structure for forming wall penetrations such as cellar window openings and the like. Such a formwork has a frame, block or sheet formwork insert that can be incorporated into the formwork.

At the same time as concreting the basement level, garage, tool cabinet or the like, breakthroughs in the masonry often need to be made, for example, installing a window or other cé77316-3766 / MJ

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-2lokból. In this case, a formwork insert, i.e. a template insert, is built into the formwork prior to concreting, which then, after concreting, forms the desired window opening or other breakthrough in the concrete wall.

Currently, one-piece profile frames are used as formwork inserts, which act as a permanent formwork element, ie remain in the concrete wall after concreting. However, such shuttering inserts are quite expensive. There is also a known solution in which the window structure itself or the window frame itself is incorporated into the formwork as a formwork insert. In such cases, the selected window structure must be in place at the time of construction of the basement level, but there is a risk of damaging the sash and window frame during concreting. There are also known solutions in which custom-made wooden frames, logs or panels are used as formwork inserts. Practical experience has shown that their installation before concreting and subsequent removal after concreting are both extremely cumbersome and time-consuming and do not meet the modern requirements for dimensional stability.

It is an object of the present invention to overcome the above shortcomings, that is, to improve the formwork structure of the type mentioned in the introduction so as to provide a wall opening that is relatively easy to handle and reusable and optionally retrofits.

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The object of the present invention has been solved in the formwork structure described in the introduction by the fact that the formwork insert is preferably divided into two inserts along its perimeter, these insertionally interconnected inserts having a decreasing cross-section from their outer edges to the division gap.

With the above-mentioned reduction of the cross-sectional portions of the formwork insert, narrowing in the direction of the partition gap, it can be easily removed in the opposite direction from the finished concrete wall after concreting and removal of one formwork side. Thus, without the remaining formwork, we get a well-formed breakthrough into which the planned door and window structure, such as a window, can be installed easily and precisely at any later time, according to the needs of the builders. Thus, the shuttering insert of the present invention can be easily installed and reused many times.

The parts of the shuttering insert may be made of any suitable material, preferably metal or suitable plastic. They can be combined to varying thicknesses to fit different concrete wall thicknesses and can be used essentially independently of the formwork system and formwork used. The formwork insert or its parts have an external shape that corresponds to the respective wall breakthrough to be formed. Parts of the shuttering insert may be made of hollow or other profiles, with or without stiffening, but where appropriate

They can also be used as pads, pads or combinations thereof. It should be noted, however, that the inwardly trapezoidal and conical outer contouring and the narrowest partitioning gap make it very easy to form the formwork insert from the finished concrete wall.

According to a further feature of the invention, it is expedient to provide a cross-section of the insert portions such that a stepped projection is formed in the region of the split gap. This stepped protrusion is due to the different size of the insert portions, which in the finished wall penetration creates a buffer edge around the perimeter which significantly simplifies the exact installation of the window structure.

Although the releasable connection of the insert parts of the shuttering insert to one another does not form part of the invention, it is emphasized that it is desirable to have an embodiment in which the insert parts are provided with a centralizing, i.e. orientation and fastening fastening device. This allows the joining and disassembly of the insert parts to be done very quickly and accurately.

Preferably, at least one of the insert portions within its outer edges has a mounting unit or units for mounting to the formwork wall. Thus, the formwork insert, or at least one of its insert parts, can be fast and easily fixed to the wall formwork. After installing one of the shuttering walls, it is advisable to fasten one of the inserts in the required position, · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

-5 then fix the other insert part and the other formwork wall. Thus, together with the wall-forming formwork, the insert parts can also be prepared for assembly and concreting, so that the efficiency and time required for construction can be approximated.

The invention will now be described in more detail with reference to the accompanying drawings, in which an exemplary embodiment of the present invention is illustrated. In the drawing:

Figure 1 is a vertical sectional view of a formwork having a formwork structure according to the invention;

Figure 2 is a horizontal sectional view showing the insertion portions of the shuttering device of Figure 1 with the positions slightly spaced apart.

As shown in the drawing, the shuttering device according to the invention is in this case formed as a shuttering insert 2, which can be built into the shuttering 1 and is divided into inserts 2a and 2b along its circumference. The insert portions 2a and 2b are guided relative to one another by a guide device 3 and can be releasably coupled to each other by a fastening fastener 4. The insert portions 2a and 2b have a narrowing cross-section in the direction of the gap 6 formed at their narrowest cross-section from their outer edges 5a and 5b respectively. As best seen in Figure 1, in this case, the pad portion 2b of the gap spacing 6 ··· "·· ·» · ·· ·· · • Λ ♦ ♦ • * · · · · · · _β '· · · · · ·· · • · ··· «· · * *

In its area adjacent to -6, its size is wider than that of the insert part 2a, thereby creating a stepped projection 7 at the spacing 6, whereby a concrete edge supporting the window frame can be easily formed.

The insert 2a is provided with a clamping unit 8 on the side facing the formwork 1, which is formed in this case as a bent edge of the frame profile. Through this, the insert part 2a and thus the entire shuttering insert 2 can be easily attached to the wall forming formwork 1.

In order to reinforce the insertion portions 2a and 2b, support profiles 9 are used, so that they can be made of a really simple curved sheet profile, thus resulting in a lightweight and easy-to-handle shuttering insert 2. It is to be noted that, according to the invention, it is also possible to form the frame-like shuttering insert 2 in the form of sheet-like insert inserts whose outer contour will form the surfaces of the desired window opening, which may be divided into several elements.

The formwork insert 2 according to the invention can be installed with a few hand movements during the assembly of the formwork 1. After that, the entire formwork is ready for concreting.

After concreting into the 2 formwork according to the invention.

-7 can be quickly and easily removed from the wall opening by removing the quick-locking fastener 4 after removing the wall-forming formwork 1, after which the insert parts 2a and 2b can be easily removed in opposite directions without any difficulty.

Thus, the present invention provides a universally usable shuttering insert that is simple and effective, reusable, and capable of providing any type of wall penetration into which any window or other door and window assembly can be retrofitted accurately and easily.

Claims (4)

A shuttering device for forming wall penetrations, in particular cellar window openings, which have a frame, block or plate formwork insert which can be integrated into the formwork, characterized in that the formwork insert (2) is formed along its circumference into inserts (2a, 2b). the insert portions (2a, 2b) have a decreasing cross-section from their outer edges (5a and 5b) towards the division gap (6). Formwork device according to Claim 1, characterized in that the formwork insert (2) has a cross-section with a stepped projection (7) in the area of the pitch gap (6). The shuttering device according to claim 1 or 2, characterized in that the insert parts (2a, 2b) are provided with an orientation device (3) and preferably with a quick-closing fastening device (4) for connection to each other. 4. A shuttering device according to any one of claims 1 to 3, characterized in that at least one of the insert parts (2a, 2b) along the outer edge (5a) of the insertion means is connected to the shutter (1).