WO2009000452A2

WO2009000452A2 - Edge shuttering for concrete ceilings

Info

Publication number: WO2009000452A2
Application number: PCT/EP2008/004900
Authority: WO
Inventors: Stefano Boggian; Graziano Mion
Original assignee: Stefano Boggian; Graziano Mion
Priority date: 2007-06-22
Filing date: 2008-06-18
Publication date: 2008-12-31
Also published as: EP2158367A2; WO2009000452A4; ITVI20070181A1; WO2009000452A3

Abstract

Herein described is a bracket for framing boards, to be used in particular, for shear connection on casting frames (C), which are raised or overhanging, such as terraces without a railing, where a block is required to be made. Such bracket is characterised in that it is made up of two mutually separated elements and that is a structure (2), shaped to form a right-angled triangle, on which the framing board (T) lies and a base (3), which lies on the casting frame (C) to support the entire bracket (1) and which is left immersed in the block casting, the two abovementioned elements (2, 3) being mutually connected by means of a bar (4).

Description

TITLE: Bracket for framing boards

Description

The present finding regards a bracket for framing boards, according to the general part of claim 1. Usually, in the building industry, the structural work for the support of the framing boards, referred to by the term shear connection, provides for the use of wooden boards, which are fixed, by means of nails or by means of other methods.

In particular, the framing operation is complicated when blocks are required to be made on terraces without a railing, due to the difficulties encountered when blocking the boards along the edges of the casting frame, which, being raised and cantilevered, does not allow direct anchorage to the abovementioned boards.

An objective of the present invention is that of providing a bracket capable of eliminating the operational drawbacks observed in the framing on raised casting frames or, in any case, where the operation of positioning and fixing boards is complicated.

Specifically, an objective of the present finding is that of providing a bracket for cantilevered framing, which is easy to construct and thus inexpensive, capable of being reused continuously and which requires both short assembly and disassembly periods. Such objectives are attained by means of a bracket for framing boards, characterised in that it is made up of two mutually separated elements and a structure, shaped to form a right-angled triangle, on which the framing board lies and by which it is supported and a base supporting the entire board, which remains immersed into the block cast. The finding shall be better illustrated through a description of one of its possible embodiments, provided solely for descriptive and non-limiting purposes, with the help of the drawings attached, wherein:

- Fig. 1 (tab. I) represents a perspective view of the bracket, in its entirety, subject of the finding; - Fig. 2 (tab. II) represents a front elevated view, partially sectioned, of the bracket subject of fig. 1;

- Fig. 3 (tab. Ill) represents an exploded view of the bracket subject of fig. 1;

- Fig. 4 (tab. IV) represents a perspective view of the bracket at an idle position;

- Figures 5, 6 (tab. V) represent two different operation positions of the bracket subject of the invention.

As observable in fig. 1, the bracket subject of the finding, indicated in its entirety with reference 1, comprises a structure, indicated in its entirety with reference 2, which supports the board "T" vertically and a support base 3, which is fixed onto the casting frame "C" and a bar 4, which, sliding inside the two abovementioned elements 2 and 3, provides for their mutual connection.

As observable in fig. 2, the structure 2 is articulated and made up of two doors, respectively indicated with references 5 and 6, mutually hinged onto the pin

7, which, during the operation step, form a substantially right angle, where the door

5 is arranged horizontally and holds the bar 4 fitted, while the door 6 is arranged vertically and serves as a vertical support for the framing board "T". The open position of the two doors 5 and 6 is provided by a thrust arm 8, hinged onto the pin

9 of the vertical door 6 and which ends up in abutment on the lower part, for example made up of a toothed bar 10, applied on the plate 5.

As observable in figures 5 and 6, with such construction, varying the stop position of the bar 8, it is possible to vary the angular opening between the two doors, in such a manner that the framing board "T" is always perfectly vertical, even in the presence of a support surface on the casting frame "C" arranged tilted in a different manner with respect to the horizontal line.

The vertical door 6 is advantageously made up of a panel 11, provided with eyelets 12 and 13, for accommodating the abovementioned pins 8 and 9, on which a post 14 lies in abutment, which can be adjusted height-wise in order to suit the various heights of the board "T" being used.

In detail, the post 14 is engaged with the threaded pins 15 along the slits 16 provided on the panel 11 and it is blocked at the desired position by means of bolts 17.

As observable in figure 2, the bar 4, during the operation step, is fitted, from one side, into the bar 5, which has a slit 5.1 with a section substantially identical to the section of the of the bar 4, in such a manner to serve as a guide for the same bar while the opposite side of the abovementioned bar ends up fitting into a sleeve 18, which, together with the plate 19, forms the base 3.

Advantageously, the plate 19 is made up of a perforated sheet in order to provide better drying of the casting which forms the block "M" to be made.

As observable in fig. 3, present on the front portion of the bar 4 are a notch

20, projecting on the upper part and arranged at the end of the bar and a peg 21, projecting at the lower part and arranged further inwards, said two projecting elements serve to block the bar during the operation step and thus support the cantilevered structure 2 on the casting surface "C".

Specifically, as understandable from the observation of fig. 2, when the bar 4 is inserted into the slit 18.1 of the sleeve 18, which has a section sufficiently wide to facilitate its insertion, the lower peg 21 penetrates into a corresponding hole 18.2 - A -

provided on the base of the abovementioned sleeve, while the notch 20 ends up in abutment on the upper part of said slit thus, in practice, the bar 4 is arranged in a slightly tilted manner, being held blocked, under the downwards thrust action exerted by the forming boards and by the block "M" during the construction process. Furthermore the bar 4 is also provided at the rear end part with a projecting button 22, which prevents the same from coming off the door 5 during the idle period of the equipment.

Operatively, the arrangement of the entire bracket 1 is provided by placing the base 3 on the casting frame "C" and blocking the plate 19 with suitable means (nails or glue points).

Subsequently, the position of the articulated structure 2 is adjusted depending on the thickness of the board "T", by sliding it on the bar 4 and blocking it at the desired position, through a threaded knob 23, which presses against the bar 4.

As understandable from observing figures 2 and 4, upon casting the block "M" the base 3 is completely immersed into the material forming the block while, on the other hand, the bar 4 which, together with the entire articulated structure 2, ends up forming a portion 1.1 of the entire bracket 1, which can thus be reused, is removed.

Obviously, the shape, dimensions and materials of the various components of the device subject of the finding may vary depending on the various engineering and construction requirements, without, for this reason, departing from the scope of the following claims.

Claims

1. BRACKET FOR FRAMING BOARDS, to be used in particular for sheer connection on casting frames (C), which are raised or overhanging, such as terraces without a railing, where a block (M) is required to be made, said bracket being characterised in that it is made up of two mutually separated elements and that is by a structure (2), shaped to form a right-angled triangle, on which the framing board (T) lies and a base (3), which is placed on the casting frame (C) for supporting the entire bracket (1) and which is left immersed in the block casting (M), the two abovementioned elements (2, 3) being mutually connected by means of a bar (4).

2. BRACKET FOR FRAMING BOARDS, according to claim 1, characterised in that the articulated structure (2) is made up of two doors (5, 6), mutually hinged onto the pin (7), said doors, during the operation step, being arranged at a right angle, with the door (5) being arranged horizontally and being fitted onto the bar (4).

3. BRACKET FOR FRAMING BOARDS, according to claim 2, characterised in that the two doors (5, 6) are mutually hinged onto a common pin (7).

4. BRACKET FOR FRAMING BOARDS, according to claim 3, characterised in that the open position of the two doors (5, 6) is provided by a thrust arm (8), hinged onto the pin (9), applied onto the vertical door (6) and which ends up in abutment, at the lower part, against a stop, for example formed by a toothed bar (10) integrally joined with the with the door (5).

5. BRACKET FOR FRAMING BOARDS, according to claim 4, characterised in that, by varying the coupling position of the arm (8) on the stop (10), it is possible to vary the angular opening between the two doors in such a manner that the framing board (T) is always perfectly vertical, even in the presence of a casting frame (C) or in the presence of another support surface tilted with respect to horizontal line.

6. BRACKET FOR FRAMING BOARDS, according one or more of the preceding claims, characterised in that the vertical door (6) is made up of a sheet (11), provided with eyelets (12, 13), for accommodating the pins (7, 9), applied on which is a plate (14), which can be adjusted height-wise in such a manner to be suited to the various heights of the table (T) being used.

7. BRACKET FOR FRAMING BOARDS, according to claim 6, characterised in that the plate (14) is engaged with the threaded pins (15) along the slits (16) provided on the sheet (11) and it is blocked, at the desired position, by means of nuts ( 17).

8. BRACKET FOR FRAMING BOARDS, according to one or more of the preceding claims, characterised in that the bar (4) is fitted, from its rear side, into a slit (5.1) of the bar (5), which has a section substantially identical to the section of said bar (4), in such a manner to serve as a guide for the abovementioned bar.

9. BRACKET FOR FRAMING BOARDS, according to one or more of the preceding claims, characterised in that the bar (4) ends up being fitted, from the front end, into a sleeve (18) which, together with the plate (19), forms the base (3).

10. BRACKET FOR FRAMING BOARDS, according to claim 9, characterised in that the plate (19) is made up of a perforated sheet.

11. BRACKET FOR FRAMING BOARDS, according to claim 9, characterised in that present in the front portion of the bar (4) are a notch (20), projecting on the upper part and arranged at the end of the bar and a peg (21), projecting at the lower part and arranged further inwards, said two projecting elements serving to block the bar during operation and thus supporting the cantilevered structure (29) on the casting frame (C).

12. BRACKET FOR FRAMING BOARDS, according to claims 9 and 11, characterised in that the sleeve (18) has a slit (18.1) with a section slightly bigger with respect to the overall dimension required by the bar (4), provided with the two projections (20, 21).

13. BRACKET FOR FRAMING BOARDS, according to claim 12, characterised in that, during the operation step of the bracket (1), the lower peg (21) penetrates into a corresponding hole (18.2) made on the base of the slit (18.1) of the abovementioned sleeve (18), while the notch (20) ends up in abutment on upper part of said slit, thus, in practice, the bar (4) is positioned slightly tilted, being held under the downwards thrust action exerted by the framing boards and the block (M) being made.

14. BRACKET FOR FRAMING BOARDS, according to one or more of the preceding claims, characterised in that, at its rear end part, the bar (4) is also provided with a projecting button (22), which prevents the door (5) from coming out.

15. BRACKET FOR FRAMING BOARDS, according to one or more of the preceding claims, characterised in that the position of the articulated structure (2), defined depending on the thickness of the board (T), by sliding it on the bar (4), is blocked by means of a threaded knob (23) which presses against the abovementioned bar.

16. BRACKET FOR FRAMING BOARDS, according to one or more of the preceding claims, characterised in that upon casting the block (M), the base (3) is left completely immersed into the casting material, while the bar (4) which, together with the articulated structure (2), ends up forming a portion (1.1) of the entire bracket (1), which can be reused, is removed.