CORNER FORMWORK SYSTEM

Abstract

The present invention relates to a corner formwork system, comprising: a flat flat panel (1) on its formwork face, an elongated corner element (2), with an L-shaped section and a longitudinal edge to be positioned adjacent to a longitudinal edge of the flat panel (1), and an elongated wedge-shaped intermediary element (3).

The longitudinal edge of the elongated corner element (2) and/or of the flat panel (1) comprises an oblique face (2a) that, when both longitudinal edges are positioned adjacent, a space is defined between them.

The elongated wedge-shaped intermediary element (3) is configured to be removably inserted into such a space, from a region adjacent to the inner sides (2i, 1i) of the elongated corner element (2) and of the flat panel (1), being trapped between its longitudinal edges.

Claims

1. Corner formwork system, comprising: at least one flat panel (1) on its formwork face, and at least one elongated corner element (2), with an L-shaped cross-section and at least one longitudinal edge configured to be positioned adjacent to a longitudinal edge of said at least one flat panel (1); wherein the respective outer sides (1e, 2e) of the at least one flat panel (1) and the at least one elongated corner element (2) are intended to form the formwork or mould of a concrete wall; the formwork system being characterised in that: the at least one longitudinal edge of said at least one elongated corner element (2) and/or that of said at least one flat panel (1) comprises an oblique face (2a) that starts from the outer side (2e) and runs transversely to a respective inner side (2i), forming an acute angle () with said outer side (2e), so that a space is defined between both longitudinal edges when they are placed adjacent; and in that it comprises at least one elongated wedge-shaped intermediary element (3) configured to be removably located in said space from a region adjacent to the inner sides (2i, 1i) of said at least one elongated corner element (2) and at least one flat panel (1).

2. Corner formwork system according to claim 1, characterised in that at least one inner face of said inner side of the at least one elongated corner element (2) and an inner face of said inner side of the at least one flat panel (1) comprise at least one pair of recesses (4) adjacent to each other, each pair of recesses (4) being configured to receive a gripping jaw (5) suitable for fixedly retaining the at least one elongated corner element (2), the corresponding at least one flat panel (1) and the at least one elongated wedge-shaped intermediary element (3) positioned between them.

3. Corner formwork system according to claim 2, characterised in that the at least one elongated corner element (2) and the at least one flat panel (1) comprise, at least in sections adjacent to the pair of recesses (4), locking portions (6) and in that ends (5a) of said gripping jaw (5) are hook-shaped and configured to be locked in said locking portions (6).

4. Corner formwork system according to any of the preceding claims, characterised in that the at least one elongated corner element (2) is an elongated profile.

5. A corner formwork system according to claim 4, characterized in that said elongated profile (2) is a profile manufactured by extrusion.

6. Corner formwork system according to claim 4 or 5 when dependent on claim 2, characterized in that each recess (4) of the at least one elongated corner element (2) comprises a housing (7) with at least horizontal walls that prevent the interior of the at least one elongated corner element (2) from being filled with debris.

7. Corner formwork system according to claims 4, 5 or 6, characterized in that the free ends of the at least one elongated corner element (2) comprise respective caps (8).

8. Corner formwork system according to any of the preceding claims, characterised in that the at least one flat panel (1) is a standard formwork panel and it is the at least one elongated corner element (2) that comprises said oblique face (2a).

9. Corner formwork system according to any of the preceding claims, characterized in that it comprises joining means (9) for joining said at least one elongated wedge-shaped intermediary element (3) with at least said oblique face (2a).

10. Corner formwork system according to claim 9, characterized in that said oblique face (2a) and said at least one elongated wedge-shaped intermediary element (3) comprise at least one pair of holes (10, 11) configured to be coaxial in their condition of use and to be able to receive a screw (9a) and nut (9b) assembly comprised by said joining means (9).

11. Corner formwork system according to claim 10 when dependent on claim 8, characterized in that said at least one flat panel (1) comprises at least one hole (12) at one side end, configured to be coaxial in its condition of use with said pair of holes (10, 11) and be able to receive the screw (9a) and nut (9b) assembly for joining with the at least one elongated wedge-shaped intermediary element (3).

12. Corner formwork system according to claim 10 or 11 when dependent on claim 2, characterized in that the hole (10) of said at least one pair of holes (10, 11) relative to the at least one elongated corner element (2) coincides with the corresponding recess (4) of said pair of recesses (4).

13. Corner formwork system according to any of the preceding claims, characterised in that said at least one elongated wedge-shaped intermediary element (3) consists of an elongated profile.

14. Corner formwork system according to claim 13, characterized in that said elongated profile (3) is a profile manufactured by extrusion.

15. Corner formwork system according to claim 13 or 14, characterized in that the free ends of said at least one elongated wedge-shaped intermediary element (3) comprise respective caps (13).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and other advantages and characteristics will be more fully understood from the following detailed description of some examples of embodiment with reference to the attached drawings, which are provided for illustrative and non-limiting purposes, wherein:

[0037] FIG. 1 is a schematic perspective view of the corner formwork system of the present invention, once assembled, for an exemplary embodiment comprising an elongated corner element, two panels and two elongated wedge-shaped elements.

[0038] FIG. 2 is a schematic plan view of the corner formwork system of the present invention, once assembled, for the same embodiment of FIG. 1, but having omitted the gripping jaws, for clarity.

[0039] FIG. 3 is a schematic plan view of the corner formwork system of the present invention, once assembled, similar to that of FIG. 2, but for another example of embodiment for which the system comprises two elongated corner elements, three panels and four elongated wedge-shaped elements.

[0040] FIG. 4 is a schematic plan view of the corner formwork system of the present invention, for the same embodiment of FIG. 2, but in an initial transport situation wherein the two elongated wedge-shaped elements have been joined to respective longitudinal edges of the elongated corner element, as seen in the enlarged detail of the figure.

[0041] FIG. 5 is a schematic plan view of the corner formwork system of the present invention, for the same embodiment of FIG. 4, but in a subsequent assembly situation, wherein the two panels have been placed, each supporting one of its longitudinal edges against a respective one of the free longitudinal edges of the elongated wedge-shaped elements, and the gripping jaws are illustrated in a pre-assembly situation. The arrows indicate the direction to be followed by the gripping jaws for fixing.

[0042] FIG. 6 is a schematic plan view of the corner formwork system of the present invention, for the same embodiment of FIGS. 4 and 5, but in a final assembly situation, wherein the gripping jaws have already been assembled, fixedly retaining at least one elongated corner element, the two panels and the two elongated wedge-shaped intermediary elements. The arrows indicate the direction to be followed by the gripping jaws to remove them and disassemble the system after setting.

[0043] FIG. 7 is a schematic plan view of the corner formwork system of the present invention, for the same embodiment of FIGS. 4, 5 and 6, but in a disassembly state. In this state, the two elongated wedge-shaped elements have been detached from the longitudinal edges of the elongated corner element and attached to the longitudinal edges of the panels. As seen in the enlarged detail of the figure, the gripping jaws have been removed, and the two sets of panel and elongated wedge-shaped element have been separated from the elongated corner element (and from the set concrete, if illustrating a situation of normal use of the system).

[0044] FIG. 8 shows an expanded detail of a partial schematic view of a cross-section of the system of FIG. 6, according to a horizontal cutting plane (parallel to that of the drawing), for an exemplary embodiment.

[0045] FIG. 9 is a schematic partial exploded view of the elongated corner element of the system of the present invention, for an exemplary embodiment for which it comprises housings that protect its interior from being filled with debris.

[0046] FIG. 10 is a partial schematic view of the elongated corner element of the system of the present invention, for an exemplary embodiment for which it includes the elongated corner element of FIG. 9, with a longitudinal edge already attached to an elongated wedge-shaped element, and another longitudinal edge in a pre-attachment situation to another elongated wedge-shaped element, by means of the screw and nut therein.

DETAILED DESCRIPTION OF SOME EXAMPLES OF EMBODIMENT

[0047] As schematically illustrated in the accompanying figures, the corner formwork system of the present invention comprises: [0048] one or more panels 1, and [0049] one or more elongated corner elements 2, with an L-shaped cross-section and a longitudinal edge configured to be positioned adjacent to a longitudinal edge of a panel 1; [0050] wherein the respective outer sides of each panel 1 and of each elongated corner element 2 are intended to form the formwork surface.

[0051] As can be seen in the attached figures, particularly in FIGS. 7, 9 and 10, the longitudinal edge of each elongated corner element 2 comprises an oblique face 2a, which, as seen in FIG. 9, starts from the outer side 2e and extends transversely to a respective inner side 2i, forming an acute angle (identified as in FIG. 9) with the outer side 2e, so that when positioned adjacent to the longitudinal edge of the panel 1, a space is defined between them.

[0052] In the figures, the oblique face 2a is not uniformly flat but, transversely, has two aligned flat end sections, both forming such an acute angle , and a recessed central one (including hole 10 as illustrated in FIG. 7). For another exemplary embodiment, not illustrated, such an oblique face 2a is uniformly flat, without recesses.

[0053] The corner formwork system of the present invention also comprises one or more elongated wedge-shaped intermediary elements 3, each configured to be removably inserted into a respective one of said spaces, from a region adjacent to the inner sides 2i, 1i of the elongated corner element(s) 2 and of the panel or panels 1 (i.e., from the side where no concrete is applied), becoming trapped between the longitudinal edges of an elongated corner element 2 and of a panel 1.

[0054] As shown in FIGS. 1, 8 and 9, an inner face of the inner side of the elongated corner element 2 and an inner face of the inner side 1i of each adjacent panel 1 comprise several pairs of recesses 4 adjacent to each other, each pair of recesses 4 being configured to receive a gripping jaw 5 suitable for fixedly retaining the elongated corner element 2, the corresponding adjacent panel 1 and the elongated wedge-shaped intermediary element 3 arranged between them, i.e. as illustrated in detail in FIG. 8, for two gripping jaws 5, each of them retaining the elongated corner element 2 with the corresponding panel 1 and with the elongated intermediary element 3 trapped between them.

[0055] FIG. 8 shows how the elongated corner element 2 and each panel 1 comprise, in sections adjacent to the pair of recesses 4, locking portions 6, and how ends 5a of each gripping jaw 5 are hook-shaped and are configured to be locked in the locking portions 6.

[0056] For an exemplary embodiment, the locking portion 6 of the elongated corner element 2 is constituted by a bulging portion, seen from the left of FIG. 8, defined by the aforementioned central recessed section of the oblique face 2a. Analogously, for the embodiment of FIG. 8, the locking portion 6 of panel 1 is also constituted by a bulging portion, seen from the right of FIG. 8.

[0057] As shown in FIG. 9, for the embodiment illustrated therein, the elongated corner element 2 is an elongated profile, the free ends of which (only the upper one has been illustrated) comprise, i.e. are covered by, respective caps 8.

[0058] Likewise, as can be seen in FIG. 810, the elongated wedge-shaped intermediary element 3 consists of an elongated profile, the free ends of which (as seen in FIG. 1 for the upper free end) comprise, i.e. are covered by, respective caps 13.

[0059] As can be seen in FIGS. 9 and 10, each recess 4 of the elongated corner element 2 comprises a housing 7 with horizontal, and also vertical walls, which prevent the interior thereof from being filled with debris.

[0060] The formwork system comprises, for the illustrated embodiments, joining means 9 for joining each elongated wedge-shaped intermediary element 3 with the oblique face 2a of the elongated corner element 2, which in particular comprise a screw 9a and nut 9b assembly, as shown in FIGS. 4 and 10.

[0061] The oblique face 2a elongated corner element 2 and the elongated wedge-shaped intermediary element 3 comprise the respective holes 10, 11 configured to be coaxial in their condition of use and to be able to receive said screw 9a and nut 9b assembly, as illustrated in FIGS. 4 and 10, to facilitate their transport. Before use on site, the screw 9a is unscrewed and the nut 9b is removed. Each elongated wedge-shaped intermediary element 3 is fixed, through its non-inclined face 3b (see FIG. 10), to the longitudinal edge of the adjacent panel 1, by means of the aforementioned screw 9a and nut 9b assembly, as can be seen in the enlarged detail of FIG. 7, inserting the nut 9b (or analogous piece) into a recess 4, and the screw 9a through holes 11 and 12.

[0062] Thus, for the illustrated exemplary embodiments, the system is assembled by fixing each elongated wedge-shaped intermediary element 3, through its inclined face 3a (see FIG. 10), to the face 2a of a respective elongated corner element 2, by means of the aforementioned screw 9a and nut 9b assembly, as can be seen in the enlarged detail of FIG. 4, inserting the nut 9b (or analogous piece) into a housing 7, and the screw 9a through holes 11 and 10, as can be seen especially in FIG. 10, and also the hole 7a of housing 7, as can be seen in FIG. 9.

[0063] Likewise, the assembly is completed, arranging the panel or panels 1, and fixing it(them) to the components joined by means of the gripping jaws 5, according to the direction indicated in FIG. 5. The system is assembled as illustrated in FIG. 1, for two panels 1, and therefore prepared to support the concrete on its outer faces.

[0064] As can be seen in FIG. 7, the panel 1 comprises a hole 12 at one side end configured to be coaxial in its condition of use with the pair of holes 10, 11 and to be able to receive the screw 9a and nut 9b assembly for joining with the elongated wedge-shaped intermediary element 3.

[0065] Thus, once the concrete has set, and in order to be able to disassemble the system, the gripping jaws 5 are removed, according to the direction indicated in FIG. 6, and each said joined assembly is removed, pulling inwards, i.e. towards the inner side 1i, sliding the facing inclined surfaces, i.e. 3a and 2a (see FIG. 10), after which the elongated corner element 2 is removed, thus disposing of the components of the corner formwork system of the present invention to be reused for subsequent formwork operations.

[0066] A person skilled in the art could make changes and modifications to the examples of embodiment described without going beyond the scope of the invention as defined in the attached claims.