Single-support anchorage for formwork construction

Abstract

The present invention relates to a fastening device (1) for fastening an external functional element to a formwork structure (2) obtained by pouring an injection fluid into the interior of the formwork and allowing it to harden, the formwork comprising at least one formwork element, said fastening device (1) comprising an internal part (4) with a contact part (6) internally defining a fastening area (11) open to the outside at a periphery (12), a retaining element (7) configured to come into contact with the inner wall of at least one formwork element, said retaining element (7) being configured to be removed from the fastening area, and a fastening part (8) defining at least one first fastening element (9).

Description

[Technical Field]

[0001] The present invention relates to the construction sector, and more particularly to a fastening device intended to ensure the fastening of an external functional element to a formwork structure, such as a formwork wall or a formwork slab, which is obtained by injecting and hardening an injection fluid inside a formwork extending substantially parallel to its extension axis and comprising at least one formwork element, such as a formwork panel. [Background technology]

[0002] It is well known from the prior art to cover the exterior of buildings made of concrete walls with cladding or facing materials in order to obtain a desired finish level or, for example, also to increase thermal and / or sound insulation. Covering with cladding or facing materials is usually carried out by drilling holes in the exterior surface of the concrete wall and then inserting a number of retention mechanisms. Although simple in design, this technical solution has the drawback of being time-consuming and labor-intensive, especially for work on the construction site. Summary of the Invention

[0003] The technical problem underlying the present invention is to provide a fastening device that is ergonomic, easy to use and economical, and that in particular allows for the fastening of external functional elements to structures obtained by injection into formwork panels.

[0004] To this end, the present invention provides A fastening device configured to ensure fastening of an external functional element to a formwork structure, such as a formwork wall or a formwork slab, comprising: the formwork structure is obtained by pouring and hardening an injection fluid into a formwork extending substantially parallel to an elongation axis and including at least one formwork element such as a formwork panel; the fastening device comprises an internal part configured to be at least partially embedded in a formwork structure; The internal components are: a. a contact portion defining therein a fixing area (11) that is open to the outside at its periphery; b. a retaining element configured to contact an inner wall of the at least one formwork element during the pouring; the retaining element may occupy an insertion position in which all or part of the retaining element is inserted within at least a portion of the fixing region; the retaining element is configured to be removed from the fixation region; A holding element; c. a fixation portion defining at least one first fixation element; Equipped with the fixation device further comprises an outer component including a second fixation element configured to be fixed to the fixation portion of the inner component, the outer component configured to hold the outer functional component in position relative to the inner component. Regarding the fixing device.

[0005] The fixing device thus makes it possible to attach and hold external functional elements in place on the formwork structure without drilling or attaching fixing or adhesive elements after the injected fluid in the formwork has hardened.

[0006] Furthermore, before carrying out the injection of the injection fluid into the formwork, the internal parts are integrated into the formwork structure, which makes it possible to obtain optimal pull-out resistance of the internal parts within the formwork structure once the construction material has completely solidified.

[0007] The fixation device may further comprise one or more of the following features, either alone or in combination:

[0008] According to an embodiment of the invention, the external functional element may be, for example, a cladding element, a plasterboard, a soundproofing and / or thermal insulation panel, a scaffolding element, a rod, a casing, a beam, a stile or a slab.

[0009] According to an embodiment of the invention, the second locking element is configured to be fixed by form-fit with the first locking element.

[0010] According to one embodiment of the invention, the peripheral edge is configured to seal the injection fluid against the fixing area, the peripheral edge being parallel to the extension axis and substantially contained in a contact plane intended to contact the formwork element.

[0011] According to an embodiment of the invention, when the retaining element occupies the insertion position, the retaining element is flush with the peripheral edge along the contact plane.

[0012] According to one embodiment of the invention, when the holding element is in the inserted position, the holding element projects relative to the periphery, so that the holding element is in contact with the formwork element without the periphery being in contact with the formwork element.

[0013] According to one embodiment of the invention, when the holding element is in the inserted position, the periphery projects relative to the holding element, so that the periphery contacts the formwork element.

[0014] According to an embodiment of the invention, the retention element is configured to provide an injection fluid seal against the fixation region when the retention element is in the insertion position.

[0015] According to an embodiment of the invention, the retaining element is configured to at least partially block communication between the anchoring region and an exterior of the contact portion when the retaining element occupies the insertion position.

[0016] According to an embodiment of the invention, the retaining element is configured such that the securing portion is accessible when the retaining element is in the removed position. Preferably, the retaining element is removed so that the retaining element can be reused during subsequent implementations of the invention.

[0017] According to one embodiment of the present invention, the at least one first stationary element is a stationary orifice; the second locking element is a male element that can be inserted into the at least one locking orifice following a lateral movement relative to the extension axis to thereby occupy the locking position; the fixed orifice and the male element respectively define a first retention element and a second retention element of the same retention mechanism; The first and second retention elements are complementary and can cooperate with each other such that the retention mechanism ensures fixation of the male element in its fixed position within the at least one fixation orifice.

[0018] According to one embodiment of the present invention, the second fixed element is a fixed orifice; the first locking element is a male element that can be inserted into said at least one locking orifice following a lateral movement relative to the contact plane to thereby assume a locking position, the fixed orifice and the male element respectively define a first retention element and a second retention element of the same retention mechanism; The first and second retention elements are complementary and can cooperate with each other such that the retention mechanism ensures fixation of the male element in its fixed position within the at least one fixation orifice.

[0019] According to one embodiment of the present invention, the first and second locking elements are hermaphroditously formed locking elements, i.e., the first and second locking elements are both male and female elements.

[0020] According to an embodiment of the invention, the holding element is at least partly made of a ferromagnetic element, such as a magnet.

[0021] According to an embodiment of the invention, the formwork element is at least partly made of magnetic material. Preferably, the retaining element is magnetically held in position on the inner wall of the formwork element.

[0022] According to an embodiment of the invention, the fixing portion is arranged inside the fixing area.

[0023] According to one embodiment of the invention, the fixed portion is part of the same assembly as the internal component, thus forming a single component assembly.

[0024] According to an embodiment of the invention, the fixing portion is located separately from the internal part, inside the space defined by the fixing region.

[0025] According to an embodiment of the invention, the fixing portion is mounted within the fixing region so as to be displaceable along at least one direction parallel to the extension axis.

[0026] According to one embodiment of the invention, the anchoring portion is mounted within the anchoring region so as to be displaceable along at least one direction transverse to the extension axis.

[0027] According to one embodiment of the invention, the fixing portion is mounted within the fixing region so that it can be displaced in any direction along an axis parallel to the extension axis.

[0028] According to an embodiment of the present invention, the fixation device further includes a movement system arranged between the contact portion and the fixed portion, the movement system being configured to exert a restoring force on the fixed portion towards a nominal position of the fixed portion and to allow the fixed portion to shift relative to the contact portion.

[0029] According to one embodiment of the invention, the movement system comprises at least one resilient, deformable fin.

[0030] According to an embodiment of the invention, the fixing portion further comprises a conical portion, the conical portion comprising an apex that opens freely inside the first fixing element.

[0031] According to one embodiment of the invention, the contact portion defines an abutment surface on its exterior, said abutment surface being configured to prevent the fixing device from coming off the formwork structure when tension is applied to the fixing portion.

[0032] According to an embodiment of the invention, the abutment surface is annular and / or frustoconical in shape.

[0033] According to an embodiment of the invention, the fixing part of the fixing device is configured to be visible from outside the formwork structure when at least one formwork element has been removed after pouring and hardening of the formwork structure, so that the position of the fixing part can be easily identified with the naked eye, for example by photogrammetry or remote sensing.

[0034] According to an embodiment of the invention, the invention further relates to a fixation matrix configured to allow the installation of a plurality of fixation devices, the fixation matrix comprising a plurality of receiving orifices, each receiving orifice configured to at least partially receive a fixation device from the plurality of fixation devices, the fixation matrix configured to position the plurality of fixation devices on the inner wall of at least one formwork element at different predetermined positions.

[0035] According to an embodiment of the present invention, the present invention further relates to a method for fastening a plurality of fastening devices to a formwork structure, the fastening method comprising at least the following steps: Providing a formwork comprising at least one formwork element; providing a plurality of fixation devices, each of which is a fixation device; Providing a fixed matrix; disposing a plurality of fastening devices within a plurality of receiving orifices; - installing a fastening matrix comprising a plurality of fastening devices on an inner wall of at least one formwork element; removing the fixation matrix by separating a plurality of fixation devices from a plurality of receiving orifices, the plurality of fixation devices being held in contact with the interior wall by respective corresponding retention elements; introducing an injection fluid into a space defined by at least one formwork element; allowing the pouring fluid to harden to form a formwork structure; removing at least one formwork element; - removing each holding element of the fixation device from the corresponding fixation area to allow access to the fixation part; securing a second fixation element of the outer part of at least one fixation device of the plurality of fixation devices to a first fixation element of at least one fixation device of the plurality of fixation devices; is.

[0036] According to some embodiments of the present invention, the injection fluid may be, for example, concrete, resin, soil, plaster, or styrofoam.

[0037] According to certain embodiments of the present invention, the infusion fluid may be reinforced by a reinforcement element embedded in the infusion fluid.

[0038] According to an embodiment of the invention, the reinforcement element is configured to arrange one or more fixing devices relative to at least one formwork element.

[0039] According to an embodiment of the invention, the fixing device comprises a positioning element, for example a fixing clip, which is provided on the fixing part of the internal part and configured to be fixed to the reinforcement element. Advantageously, such a configuration of the invention makes it possible, on the one hand, to facilitate the installation of the fixing device and, on the other hand, to increase the mechanical pull-out resistance of the internal part in the formwork structure after the hardening of the pouring fluid. [Brief explanation of the drawings]

[0040] The present invention will be better understood from the following description taken in conjunction with the accompanying drawings, in which identical reference numbers correspond to structurally and / or functionally identical or similar elements. [Figure 1] FIG. 1 is a side cross-sectional view of a formwork structure with internal components of a fastening device according to one embodiment of the present invention. [Figure 2] FIG. 2 is a partial perspective cross-sectional view of a formwork structure with internal parts of a fixing device according to the embodiment of FIG. [Figure 3] FIG. 3 is a partial perspective cross-sectional view of a formwork structure equipped with a fixing device according to a first embodiment of the present invention. [Figure 4] FIG. 4 shows a cross-sectional side view and a front view of the internal components of a fixation device according to a variation of the present invention. [Figure 5] FIG. 5 is a perspective view of a fixation matrix and multiple fixation devices in accordance with an embodiment of the present invention. [Figure 6] FIG. 6 is a perspective view of a reinforcing element and a number of fixing devices according to a variant of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0041] 1-3 show all or part of a fastening device 1, which is intended to ensure the fastening of an external functional element to a formwork structure 2, which extends substantially parallel to an extension axis A1 and is obtained by pouring and hardening a grouting fluid into the interior of a formwork comprising at least one formwork element 3, such as a formwork panel. The grouting fluid is understood to be any material suitable for use in the construction sector, such as concrete, resin, earth, plaster, styrofoam, etc. The grouting fluid may also be reinforced by reinforcing elements embedded in the grouting fluid.

[0042] External functional elements are understood to be elements intended to completely or partially cover the formwork structure 2, such as cladding elements, plasterboard, soundproofing and / or thermal insulation panels, scaffolding elements, rods, casings, beams, stiles or slabs.

[0043] The fixing device 1 comprises an internal part 4 intended to be embedded in the formwork structure 2 and an external part 5 which makes it possible to ensure the retention of the external element functions relative to the internal part 4.

[0044] In one embodiment of the invention shown in Figures 1-3, the internal part 4 comprises a contact portion 6, a retaining element 7 and a fixing portion 8, the fixing portion 8 defining a first fixing element 9 configured to cooperate by form-fitting with a second fixing element 10 provided on the external part 5.

[0045] The contact portion 6 defines an internal fastening area 11 that opens outward at a peripheral edge 12. The peripheral edge 12 extends opposite an inner wall 13 of the formwork element 3 and is configured to be substantially parallel to the contact plane PC. The contact portion 6 defines an external abutment surface 14 that is configured to prevent the fastening device 1 from coming off the formwork structure 2 when a tensile force is applied to the fastening portion 8. The abutment surface 14 may be annular and / or frustoconical, depending on the desired geometric shape of the fastening device 1.

[0046] The retaining element 7 is made at least in part of a ferromagnetic element, such as a magnet, and the formwork element 3 is made at least in part of a magnetic material such that the retaining element 7 is magnetically held in position on the inner wall 13 of the formwork element 3. The retaining element 7 is configured to alternately occupy an insertion position in which it is inserted inside the anchoring area 11 to block fluid communication between the anchoring area 11 and the outside of the contact part 6, and a removal position in which it is configured to be removable from the anchoring area 11 to allow access to the anchoring part 8 from outside the formwork structure 2. Preferably, the retaining element 7 is removed after the pouring fluid has solidified so that it can be reused between subsequent realizations of the invention.

[0047] According to the embodiment of the invention as shown in the figures, the retaining element 7 is flush with the peripheral edge 12 in the contact plane PC and is in contact with the inner wall 13 of the formwork element 3. However, according to other embodiments of the invention not shown in the figures, it is conceivable that when the retaining element 7 is in the inserted position, the retaining element 7 projects together with the peripheral edge 12, so that the retaining element 7 comes into contact with the formwork element 3. It is also conceivable that when the retaining element 7 is in the inserted position, the peripheral edge 12 projects together with the retaining element 7, so that the peripheral edge 12 comes into contact with the formwork element 3.

[0048] The fixing portion 8 is provided separately from the internal part 4, inside the space defined by the fixing region 11. The fixing portion 8 further comprises a conical portion 15, which comprises an apex that opens freely inside the first fixing element 9. In other words, the apex of the conical portion 15 is the part with the smallest cross section. The conical portion 15 thus converges towards the first fixing element 9 and opens towards the retaining element 7. The fixing portion 8 of the fixing device 1 is configured so that it is visible from outside the formwork structure 2 when at least one formwork element 3 has been removed after the pouring and hardening of the formwork structure 2. The position of the fixing portion 8 can thus be easily identified with the naked eye, for example by photogrammetry or remote sensing.

[0049] According to the embodiment of the invention shown in Figures 1-3, the first locking element 9 is a locking orifice and the second locking element 10 is a male element that can be inserted inside the locking orifice and assume a locking position following a lateral movement relative to the contact plane PC. The locking orifice and the male element respectively define the first and second retention elements of the same retention mechanism, which are complementary and can cooperate with each other so that the retention mechanism ensures the locking of the male element in its locking position in the at least one locking orifice. According to an embodiment of the invention not shown in the figures, the first locking element 9 and the second locking element 10 may be hermaphroditic locking elements, i.e. both male and female elements.

[0050] The fixing device 1 further includes a movement system 16 arranged on the internal part 4 between the contact portion 6 and the fixed portion 8. The movement system 16 is configured to exert a restoring force on the fixed portion 8 toward its nominal position. The movement system 16 is configured to allow the fixed portion 8 to be displaced in any direction relative to the contact portion 6 in a plane parallel to the contact plane PC. Furthermore, the movement system 16 can be displaced along a direction transverse to the contact plane PC. The movement system 16 is formed by a plurality of fins 17, each of which is elastically deformable.

[0051] Figure 4 shows a variant of the invention, which differs in that the fixed part 8 of the internal part 4 includes a plurality of first fixed elements 9, and also in that the fixed part 8 is part of the same assembly as the internal part 4, thus forming a single-part assembly. Advantageously, this variant makes it possible to adjust the position of the second fixed element 10 without using a movable compensation system, such as the movement system 16 shown in Figures 1 to 3.

[0052] Furthermore, the present invention relates to a fastening matrix 18, shown in Figure 5. The fastening matrix 18 is configured to allow simultaneous placement of multiple fastening devices 1. The fastening matrix 18 comprises multiple receiving orifices 19. Each receiving orifice 19 is configured to at least partially receive a fastening device 1 from the multiple fastening devices 1. The fastening matrix 18 is configured to arrange the multiple fastening devices 1 on the inner wall 13 of at least one formwork element 3 at different predetermined positions.

[0053] According to the variant shown in Figure 6, the fixing device 1 comprises a positioning element 20, for example a fixing clip, which is provided on the fixing part 8 of the internal part 4 and is configured to be fixed to a reinforcing element 200. The reinforcing element 200 is then configured to position the fixing device or devices 1 relative to the formwork element 3.

[0054] Advantageously, such a configuration of the invention makes it possible, on the one hand, to facilitate the installation of the fastening device 1 inside the formwork, and, on the other hand, to increase the mechanical pull-out resistance of the internal part 4 in the formwork structure 2 after the hardening of the injection fluid.

[0055] According to a first embodiment of the invention, the invention also relates to a method for fastening a plurality of fastening devices 1 to a formwork structure 2. The fastening method comprises at least the following steps, which are: providing a formwork comprising at least one formwork element 3; providing a plurality of fixation devices 1 according to an embodiment of the invention; providing a fixation matrix 18; - placing a plurality of fastening devices 1 inside a plurality of receiving orifices 19; - placing a fastening matrix 18 comprising a plurality of fastening devices 1 on the inner wall 13 of at least one formwork element 3; removing the fixation matrix 18 by separating the fixation devices 1 from the receiving orifices 19, the fixation devices 1 being held in contact with the inner wall 13 by respective corresponding holding elements 7; - introducing an injection fluid into the space defined by at least one formwork element 3; hardening the injection fluid to form a formwork structure 2; removing at least one formwork element 3; removing each holding element 7 of the fixing device from the corresponding fixing area 11 so as to gain access to the fixing part 8; - fixing a second fixation element 10 of the outer part 5 of at least one fixation device 1 of the plurality of fixation devices 1 to a first fixation element 9 of at least one fixation device 1 of the plurality of fixation devices 1; is.

[0056] Of course, the invention is not limited to the described and illustrated embodiments, which are given by way of example only: modifications are possible, particularly with regard to the arrangement of the various elements or by the substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

1. A fastening device (1) configured to ensure the fastening of an external functional element to a formwork structure (2), such as a formwork wall or a formwork slab, comprising: The formwork structure (2) extends parallel to an elongation axis (A1) and is obtained by pouring and hardening a pouring fluid inside a formwork comprising at least one formwork element (3), such as a formwork panel; The fixing device (1) comprises an internal part (4) adapted to be at least partially embedded in the formwork structure (2), The internal part (4) is a. a contact portion (6) defining therein a fixing area (11) that is open to the outside at a peripheral edge (12); b. a retaining element (7) configured to contact the inner wall (13) of said at least one formwork element (3) during said pouring, the retaining element (7) can occupy an insertion position in which the retaining element (7) is fully or partially inserted into at least a portion of the fastening area (11); The retaining element (7) is adapted to be removed from the fastening area (11), a retaining element (7), c. a fixing portion (8) defining at least one first fixing element (9); Equipped with The fixation device (1) further comprises an outer part (5) having a second fixation element (10) configured to be fixed to the fixation portion (8) of the inner part (4), the outer part (5) being configured to hold the outer functional element in position relative to the inner part (4). Fixation device (1).

2. the rim (12) is configured to seal the injection fluid against the fixation area (11); said peripheral edge (12) is parallel to said extension axis (A1) and is included in a contact plane (PC) intended to contact said formwork element (3); A fixing device (1) according to claim 1.

3. When the retaining element (7) occupies the insertion position, the retaining element (7) is flush with the peripheral edge (12) along the contact plane (PC). A fixing device (1) according to claim 2.

4. When the holding element (7) is in the insertion position, the holding element (7) projects relative to the periphery (12), so that the holding element (7) is in contact with the formwork element (3) without the periphery (12) contacting the formwork element (3). A fixing device (1) according to claim 1.

5. When the holding element (7) occupies the insertion position, the holding element (7) is configured to seal the injection fluid against the fixing area (11). A fixing device (1) according to any one of claims 1-4.

6. said at least one first stationary element (9) being a stationary orifice; said second locking element (10) being a male element capable of occupying said locking position by being inserted into said at least one locking orifice following a lateral movement relative to said extension axis (A1); the fixed orifice and the male element respectively define a first retention element and a second retention element of the same retention mechanism; the first and second retention elements are complementary and can cooperate with each other such that the retention mechanism ensures fixation of the male element in its fixed position within the at least one fixation orifice; A fixing device (1) according to any one of claims 1-5.

7. the holding element (7) is at least partly made of a ferromagnetic element, such as a magnet, A fixing device (1) according to any one of claims 1-6.

8. The fixing portion (8) is arranged in the fixing area (11). A fixing device (1) according to any one of claims 1-7.

9. the fixing part (8) is mounted in the fixing area (11) so as to be displaceable along at least one direction parallel to the extension axis (A1); A fixing device (1) according to any one of claims 1-8.

10. the fixing portion (8) is mounted in the fixing region (11) so as to be displaceable along at least one direction transverse to the extension axis (A1); A fixing device (1) according to any one of claims 1-9.

11. the fixed part (8) is mounted in the fixed area (11) so that it can be displaced in any direction on an axis parallel to the extension axis (A1); A fixing device (1) according to any one of claims 1-10.

12. a movement system (16) disposed between the contact portion (6) and the fixed portion (8); the movement system (16) is configured to exert a restoring force on the fixed part (8) towards its nominal position and to allow the fixed part (8) to be displaced relative to the contact part (6); A fixing device (1) according to any one of claims 8-11.

13. The movement system (16) comprises at least one elastically deformable fin (17). A fixing device (1) according to any one of claims 1-12.

14. The fixed portion (8) further comprises a conical portion (15), The conical portion (15) includes an apex that opens freely inside the first fixing element (9). A fixing device (1) according to any one of claims 1-13.

15. A fixation matrix (18) configured to allow the installation of a plurality of fixation devices (1) each according to any one of claims 1 to 14, The immobilization matrix (18) includes a plurality of receiving orifices (19); Each receiving orifice (19) is configured to at least partially receive a fixing device (1) from among the plurality of fixing devices (1); the fixing matrix (18) is configured to arrange the fixing devices (1) on the inner wall (13) of the at least one formwork element (3) in different predetermined positions; Immobilization matrix (18).

16. A method for fastening a plurality of fastening devices (1) to a formwork structure (2), said fastening method comprising: providing a formwork comprising at least one formwork element (3); providing a plurality of fixation devices (1), each of which is a fixation device (1) according to any one of claims 1 to 14; Providing a fixation matrix (18) according to claim 15; placing said plurality of fixing devices (1) within a plurality of receiving orifices (19); placing the fixing matrix (18) containing the plurality of fixing devices (1) on the inner wall (13) of the at least one formwork element (3); removing the fixation matrix (18) by separating the plurality of fixation devices (1) from the plurality of receiving orifices (19); The plurality of fixing devices (1) are held in contact with the inner wall (13) by the corresponding holding elements (7), removing said fixation matrix (18); introducing an injection fluid into the space defined by said at least one formwork element (3); hardening the injected fluid to form a formwork structure (2); removing said at least one formwork element (3); removing the retaining element (7) of each of the fixing devices (1) from the corresponding fixing area (11) to allow access to the fixing part (8); fastening a second fastening element (10) of an outer part (5) of at least one fastening device (1) of said plurality of fastening devices (1) to a first fastening element (9) of at least one fastening device (1) of said plurality of fastening devices (1); a fixing method,

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