Double support fixing device for formwork structure

Abstract

The invention relates to a fixing device (1) intended to ensure the fixing of an external functional element on a formwork structure (2) comprising a first formwork element (3A) and a second formwork element (3B). The fixing device (1) comprises an internal part (4) intended to be embedded in the formwork structure (2), and which comprises: a first part (6) internally delimiting a receiving zone opening outwards at a first peripheral edge (13), a holding element, a second part (7) comprising a second peripheral edge configured to be in contact with a second internal wall (14B) of the second formwork element (3B), a fixing part delimiting a first securing element, the fixing device (1) comprising an external part which comprises a second securing element configured to be secured to the fixing part of the internal part (4). Figure 1

Description

Title of the invention: Double support fixing device for formwork structure Technical field

[0001] The present invention relates to the field of construction and more particularly to a fixing device intended to ensure the fixing of an external functional element on a formwork structure, such as a formwork wall or a formwork slab for example, the formwork structure extending substantially parallel to an orientation axis and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least one formwork element, such as a formwork. State of the art

[0002] It is known from the prior art to cover the exterior face of constructions made with concrete walls with a covering or facing in order to obtain the desired level of finish or also to add thermal and / or sound insulation for example. The installation of the covering / facing is generally carried out by drilling and then inserting a plurality of retaining mechanisms on the exterior face of the concrete walls. Although of simple design, this technical solution has the disadvantages of requiring time-consuming and tedious steps on a construction site. Summary of the invention

[0003] The technical problem underlying the invention consists in particular in providing a fixing device making it possible to fix an external functional element to a structure obtained by casting in a formwork, while being ergonomic, simple to use and economical.

[0004] To this end, the present invention relates to a fixing device intended to ensure the fixing of an external functional element on a formwork structure, such as a formwork wall or a formwork slab for example, the formwork structure extending substantially parallel to an orientation axis and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least a first formwork element and a second formwork element, such as a formwork, the fixing device comprising:

[0005] - an internal part intended to be at least partially embedded in the structure plugged, and which includes: a. a first part internally delimiting a reception zone opening outwards at a first peripheral edge, b. a holding element, configured to be in contact with a first internal wall of the first formwork element at the time of said casting, the holding element being able to occupy an insertion position in which all or part of the holding element is inserted inside a part of the receiving zone, the holding element being configured to be able to be removed from the receiving zone, c. a second portion comprising a second peripheral edge configured to be in contact with a second internal wall of the second formwork element, d. a fixing part configured to be accessible from outside the formwork structure after hardening of the casting fluid and removal of the formwork, the fixing part delimiting at least a first securing element,

[0006] the fixing device further comprising an external part which comprises a second securing element configured to be secured to the fixing part of the internal part, the external part being intended to hold the external functional element in position relative to the internal part.

[0007] Thus, the fixing device allows an external functional element to be placed and held in position on a formwork structure without having to resort to drilling or placing a fixing or gluing element after the casting fluid has hardened inside the formwork.

[0008] Also, the internal part is integrated into the formwork structure before pouring the casting fluid inside the formwork, which makes it possible to obtain optimal tear resistance of the internal part inside the formwork structure once the solidification of the construction material has taken place.

[0009] The fixing device may further have one or more of the following characteristics, taken alone or in combination.

[0010] According to one embodiment of the invention, the external functional element may be a facing element, a plasterboard, an acoustic and / or thermal insulation panel, a scaffolding element, a rod, a box, a beam, a rail or a slab for example.

[0011] According to one embodiment of the invention, the second securing element is configured to be secured by shape complementarity with the first securing element.

[0012] According to one embodiment of the invention, the first peripheral edge is configured to ensure a seal for said casting fluid with respect to the receiving zone, the first peripheral edge being substantially contained in a contact plane intended to be parallel to the orientation axis and to come against the first internal wall of the first formwork element.

[0013] According to one embodiment of the invention, the holding element is flush with the first peripheral edge along the contact plane when the holding element occupies the insertion position.

[0014] According to one embodiment of the invention, the holding element projects relative to the first peripheral edge when the holding element occupies the insertion position, so that the holding element is in contact against the first formwork element without the peripheral edge being in contact against the first formwork element.

[0015] According to one embodiment of the invention, the first peripheral edge projects relative to the holding element when the holding element occupies the insertion position, so that the first peripheral edge is in contact against the first formwork element.

[0016] According to one embodiment of the invention, the holding element is configured to provide a seal for the casting fluid with respect to the receiving zone when the holding element occupies the insertion position.

[0017] According to one embodiment of the invention, the holding element is configured to at least partially close the communication between the receiving zone and the exterior of the first part when the holding element occupies the insertion position.

[0018] According to one embodiment of the invention, the holding element is configured to be completely detachable from the rest of the internal part. Advantageously, the holding element is removed in order to be reused during a subsequent implementation of the invention.

[0019] According to one embodiment of the invention, the second peripheral edge is configured to ensure a seal for said casting fluid with respect to the fixing part, the second peripheral edge being substantially contained in a plane intended to be parallel to the orientation axis and to come against the second internal wall of the second formwork element at the time of casting.

[0020] According to one embodiment of the invention, the first securing element is a fixing orifice, and the second securing element is a male element capable of being inserted inside said at least one fixing orifice following a movement oriented transversely to the orientation axis to occupy a locking position, the fixing orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.

[0021] According to one embodiment of the invention, the second securing element is a fixing orifice, and the first securing element is a male element capable of being inserted inside said at least one fixing orifice following a movement oriented transversely to the orientation axis to occupy a locking position, the fixing orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.

[0022] According to one embodiment of the invention, the first and second fastening elements may be hermaphroditic fastening elements, i.e. the first and second fastening elements are both male and female.

[0023] According to one embodiment of the invention, the holding element is made at least in part of a ferromagnetic element, such as a magnet for example.

[0024] According to one embodiment of the invention, the formwork element is made at least in part of a magnetic material. Advantageously, the holding element is magnetically held in position on the internal wall of the formwork element.

[0025] According to one embodiment of the invention, the fixing part is positioned inside an internal space delimited by the second part.

[0026] According to one embodiment of the invention, the fixing part is part of the same assembly as the internal part, thus forming a single-piece assembly.

[0027] According to one embodiment of the invention, the fixing part is mounted inside the second part so as to offer a possibility of movement in at least one direction parallel to the orientation axis.

[0028] According to one embodiment of the invention, the fixing part is mounted inside the second part so as to offer a possibility of movement in any direction on an axis parallel to the orientation axis.

[0029] According to one embodiment of the invention, the fixing part is mounted inside the second part so as to offer a possibility of movement in at least one direction oriented transversely to the orientation axis.

[0030] According to one embodiment of the invention, the fixing device further comprises a movement system interposed between the second part and the fixing part, the movement system being configured to exert a return force on the fixing part towards a nominal position of the fixing part, and to offer the possibility of moving the fixing part relative to the second part.

[0031] According to one embodiment of the invention, the deflection system comprises at least less an elastically deformable fin.

[0032] According to one embodiment of the invention, the fixing part further comprises a conical part, the conical part comprising a top opening freely inside the first securing element.

[0033] According to one embodiment of the invention, the fixing device further comprises a corolla mechanically connecting the first part and the second part, said corolla being configured to deform elastically between a free position and a constrained position.

[0034] According to one embodiment of the invention, the elongation of the corolla can be pre-adjusted according to at least two pre-adjustment positions, said pre-adjustment positions corresponding to different initial lengths of the fixing device when the latter occupies a free state.

[0035] By free state is meant a configuration in which the fixing device is not subjected to any mechanical tensile or compressive stress.

[0036] According to one embodiment of the invention, the second part externally delimits a stop surface, said stop surface being configured to oppose the withdrawal of the fixing device from the formwork structure when a tensile force is exerted on the fixing part.

[0037] According to one embodiment of the invention, the abutment surface is annular and / or frustoconical.

[0038] According to one embodiment of the invention, the fixing portion of the fixing device is configured to be visible from outside the formwork structure when the at least one formwork element is removed after the pouring and hardening of the formwork structure. Thus, the location of the fixing portion can be easily identified with the naked eye, by photogrammetry or by telemetry for example.

[0039] According to one embodiment of the invention, the casting fluid may be concrete, resin, earth, plaster or expanded polystyrene for example.

[0040] According to one embodiment of the invention, the casting fluid may be reinforced by a reinforcing element which is embedded in the casting fluid. Brief description of the figures

[0041] The present invention will be better understood with the aid of the following description with reference to the appended figures, in which identical reference signs correspond to structurally and / or functionally identical or similar elements.

[0042] [Fig. 1] is a partial side view of a formwork structure comprising an internal part of a fixing device according to one embodiment of the invention;

[0043] [Fig.2] is a side sectional view of the internal part according to the embodiment of [Fig.l];

[0044] [Fig.3] is a side sectional view of the internal part cooperating with an external part according to the embodiment of [Fig.l];

[0045] [Fig.4] is a top view of the internal part according to a variant of the embodiment of the invention;

[0046] [Fig.5] is a side sectional view of the internal part according to the embodiment variant of [Fig.3]. Detailed description

[0047] Figures 1 to 3 represent all or part of a fixing device 1 intended to ensure the fixing of an external functional element on a formwork structure 2 such as a formwork wall or a formwork slab for example. The formwork structure 2 extends substantially parallel to an orientation axis A1 and is obtained by pouring and hardening a casting fluid inside a formwork comprising at least a first formwork element 3A and a second formwork element 3B, such as a formwork for example. By casting fluid is meant any material compatible with being used in the field of construction such as concrete, resin, earth, plaster or expanded polystyrene for example. The casting fluid can also be reinforced by a reinforcing element which is embedded in the casting fluid.

[0048] By external functional element is meant an element intended to totally or partially cover the shuttered structure 2, such as a facing element, a plasterboard, an acoustic and / or thermal insulation panel, a scaffolding element, a rod, a box, a beam, a rail or a slab for example.

[0049] The fixing device 1 comprises an internal part 4 intended to be embedded in the formwork structure 2, as well as an external part 5 which makes it possible to ensure the maintenance of the external functional element with respect to the internal part 4. Thus, the fixing device 1 allows an external functional element to be put in place and maintained in position on a formwork structure 2 without having to resort to drilling or to the installation of a fixing or gluing element after the casting fluid has hardened inside the formwork. Also, the internal part 4 is integrated into the formwork structure 2 before the casting fluid is poured inside the formwork, which makes it possible to obtain optimal tear resistance of the internal part 4 inside the formwork structure 2 once the solidification of the construction material has taken place.

[0050] In one embodiment of the invention shown in Figures 1 to 3, the internal part 4 comprises a first part 6, a second part 7, a holding element 8 and a fixing part 9 which delimits a first securing element 10 configured to cooperate by complementarity of shape with a second element of solidarity 11 provided on the external part 5.

[0051] The first part 6 internally delimits a receiving zone 12 which opens outwards at a first peripheral edge 13. The first peripheral edge 13 is configured to extend opposite a first internal wall 14A of the first formwork element 3A and substantially parallel to a contact plane PC.

[0052] In one embodiment of the invention, the holding element 8 is made at least in part of a ferromagnetic element, such as a magnet for example, while the first formwork element 3A is made at least in part of a magnetic material so that the holding element 8 is magnetically held in position on the first internal wall 14A of the first formwork element 3A at the time of casting. The holding element 8 is configured to alternately occupy an insertion position in which it is inserted inside the receiving zone 12 so as to close the fluid communication between the receiving zone 12 and the outside of the first part 6, and a withdrawal position in which the holding element 8 is configured to be able to be removed from the receiving zone 12.Advantageously, the holding element 8 is removed after solidification of the casting fluid in order to be reused during a subsequent implementation of the invention.

[0053] According to the embodiment of the invention as visible in the figures, the holding element 8 is flush with the first peripheral edge 13 at the contact plane PC and is in contact with the first internal wall 14A of the first formwork element 3A. However, according to other embodiments of the invention not shown in the figures, it is conceivable that the holding element 8 projects with the first peripheral edge 13 when the holding element 8 occupies the insertion position, so that the holding element 8 is in contact against the first formwork element 3A; it is also conceivable that the peripheral edge projects with the holding element 8 when the holding element 8 occupies the insertion position, so that the first peripheral edge 13 is in contact against the first formwork element 3A.

[0054] The second part 7 of the internal part 4 comprises a second peripheral edge 15 configured to be in contact with a second internal wall 14B of the second formwork element 3B. The second peripheral edge 15 is configured to provide a seal for said casting fluid with respect to the fixing part 9. The second peripheral edge 15 is substantially contained in a plane intended to be parallel to the orientation axis A1 and to come against the second internal wall 14B of the second formwork element 3B at the time of casting. Furthermore, the second part 7 externally delimits a stop surface 16. The stop surface 16 is configured to oppose the removal of the fixing device 1 from the formwork structure 2 when a tensile force is exerted on the fixing part 9. The stop surface 16 may be annular and / or frustoconical, or other, depending on the desired geometry of the fixing device 1.

[0055] The fixing part 9 is provided inside an internal space delimited by the second part 7. The fixing part 9 further comprises a conical part 17, the conical part 17 having a top opening freely inside the first securing element 10. In other words, the top of the conical part 17 is the part having the smallest section. Thus, the conical part 17 converges in the direction of the first securing element 10 and opens in the direction of the second peripheral edge 15. The fixing part 9 of the fixing device 1 is configured to be visible from the outside of the formwork structure 2 when the formwork elements are removed after the casting and hardening of the formwork structure 2. Thus, the location of the fixing part 9 can be easily identified with the naked eye, by photogrammetry or by telemetry for example.

[0056] According to the embodiment of the invention shown in Figures 1 to 3, the first securing element 10 is a fixing orifice, and the second securing element 11 is a male element capable of being inserted inside the fixing orifice following a movement oriented transversely to the contact plane PC to occupy a locking position. The fixing orifice and the male element respectively delimit a first retaining element and a second retaining element of the same retaining mechanism, the first retaining element and the second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.According to an embodiment of the invention not shown in the figures, the first securing element 10 and the second securing element 11 may also be hermaphroditic fastening elements, that is to say that they are both male and female.

[0057] The fixing device 1 further comprises a deflection system 18 which is interposed between the second part 7 and the fixing part 9 of the internal part 4. The deflection system 18 is configured to exert a return force on the fixing part 9 towards a nominal position of the fixing part 9. The deflection system 18 is configured to offer the possibility of displacement of the fixing part 9 relative to the second in any direction on a plane parallel to the contact plane PC. In addition, the deflection system 18 can offer a possibility of displacement in a direction which is transverse to the contact plane PC. The deflection system 18 is produced by means of a plurality of fins 19 which are each elastically deformable.

[0058] The internal part 4 further comprises a corolla 20 which is configured to mechanically connect the first part 6 and the second part 7. The corolla 20 is configured to deform, elastically for example, between a free position and a constrained position. The elongation of the corolla 20 can be preset according to at least two preset positions 21. The preset positions 21 correspond to different initial lengths of the fixing device 1 when the latter occupies a free state. By free state is meant a configuration in which the fixing device 1 is not subjected to any mechanical tensile or compressive stress.

[0059] Figures 4 and 5 show a variant of the embodiment of the invention. This variant differs in that the fixing part 9 of the internal part 4 comprises a plurality of first securing elements 10. It also differs in that the fixing part 9 is part of the same assembly as the second part 7, thus forming a single-piece assembly. Advantageously, this variant embodiment makes it possible to adapt to the position of the second securing element 11 without resorting to a mobile compensation system such as the deflection system 18 shown in Figures 1 to 3.

[0060] Of course, the present invention is in no way limited to the embodiments described and illustrated which have been given only as examples. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Claims

1. Fixing device (1) intended to ensure the fixing of an external functional element on a formwork structure (2), such as a formwork wall or a formwork slab for example, the formwork structure (2) extending parallel to an orientation axis (Al) and being obtained by pouring and hardening a casting fluid inside a formwork comprising at least a first formwork element (3A) and a second formwork element (3B), such as a formwork, the fixing device (1) comprising: - an internal part (4) intended to be at least partially embedded in the formwork structure (2), and which comprises: a. a first part (6) internally delimiting a receiving zone (12) opening outwards at a first peripheral edge (13), b. a holding element (8), configured to be in contact with a first internal wall (14A) of the first formwork element (3A) at the time of said casting, the holding element (8) being able to occupy an insertion position in which all or part of the holding element (8) is inserted inside a part of the receiving zone (12), the holding element (8) being configured to be able to be removed from the receiving zone (12), c. a second part (7) comprising a second peripheral edge (15) configured to be in contact with a second internal wall (14B) of the second formwork element (3B), d. a fixing part (9) configured to be accessible from outside the formwork structure (2) after hardening of the casting fluid and removal of the formwork, the fixing part (9) delimiting at least a first securing element (10), the fixing device (1) further comprising an external part (5) which comprises a second securing element (11) configured to be secured to the fixing part (9) of the internal part (4), the external part (5) being intended to hold the external functional element in position relative to the internal part (4).

2. Fastening device (1) according to claim 1, wherein the first peripheral edge (13) is configured to ensure a seal for said casting fluid with respect to the receiving zone (12), the first peripheral edge (13) being contained in a contact plane (PC) intended to be parallel to the orientation axis (Al) and to come against the first internal wall (14A) of the first formwork element (3A).

3. Fastening device (1) according to claim 2, wherein the holding element (8) is flush with the first peripheral edge (13) along the contact plane (PC) when the holding element (8) occupies the insertion position.

4. A fixing device (1) according to claim 1, wherein the holding element (8) projects relative to the first peripheral edge (13) when the holding element (8) occupies the insertion position, so that the holding element (8) is in contact against the first formwork element (3A) without the peripheral edge being in contact against the first formwork element (3A).

5. Fastening device (1) according to one of claims 1 to 4, wherein the holding element (8) is configured to provide a seal for the casting fluid with respect to the receiving zone (12) when the holding element (8) occupies the insertion position.

6. A fixing device (1) according to any one of claims 1 to 5, wherein the second peripheral edge (15) is configured to provide a seal for said casting fluid with respect to the fixing part (9), the second peripheral edge (15) being contained in a plane intended to be parallel to the orientation axis (Al) and to come against the second internal wall (14B) of the second formwork element (3B) at the time of casting.

7. Fastening device (1) according to any one of claims 1 to 6, in which the at least one first securing element (10) is a fastening orifice, and in which the second securing element (11) is a male element capable of being inserted inside said at least one fastening orifice following a movement oriented transversely to the orientation axis (A1) to occupy a locking position, the fastening orifice and the male element respectively delimiting a first retaining element and a second retaining element of the same retaining mechanism, said first retaining element and said second retaining element being complementary and capable of cooperating with each other so that the retaining mechanism ensures locking of the male element in its locking position inside the at least one fixing orifice.

8. A fixing arrangement according to any one of claims 1 to 7, wherein the holding element (8) is made at least in part of a ferromagnetic element, such as a magnet for example.

9. A fixing device (1) according to any one of claims 1 to 8, wherein the fixing part (9) is positioned inside an internal space delimited by the second part (7).

10. Fixing device (1) according to any one of claims 1 to 9, wherein the fixing part (9) is mounted inside the second part (7) so as to offer a possibility of movement in at least one direction parallel to the orientation axis (Al).

11. Fixing device (1) according to claim 10, wherein the fixing part (9) is mounted inside the second part (7) so as to offer a possibility of displacement in any direction on an axis parallel to the orientation axis (Al).

12. Fixing device (1) according to any one of claims 1 to 11, wherein the fixing part (9) is mounted inside the second part (7) so as to offer a possibility of movement in at least one direction oriented transversely to the orientation axis (Al).

13. A fixing device (1) according to any one of claims 10 to 12, which further comprises a movement system (18) interposed between the second part (7) and the fixing part (9), the movement system (18) being configured to exert a return force on the fixing part (9) towards a nominal position of the fixing part (9), and to offer the possibility of movement of the fixing part (9) relative to the second part (7).

14. Fixing device (1) according to the preceding claim, in which the movement system (18) comprises at least one elastically deformable fin (19).

15. A fixing device (1) according to any one of the preceding claims, wherein the fixing portion (9) further comprises a conical portion (17), the conical portion (17) comprising a top opening freely inside the first securing element (10).

16. A fixing device (1) according to any preceding claim, which further comprises a corolla (20) mechanically connecting the first part (6) and the second part (7), said corolla (20) being configured to deform elastically between a free position and a constrained position.

17. Fastening device (1) according to the preceding claim, in which the elongation of the corolla (20) can be pre-adjusted according to at least two pre-adjustment positions (21), said pre-adjustment positions (21) corresponding to different initial lengths of the fastening device (1) when the latter occupies a free state.

18. A fixing device (1) according to any one of the preceding claims, wherein the second part (7) externally delimits a stop surface (16), said stop surface (16) being configured to oppose the removal of the fixing device (1) from the formwork structure (2) when a tensile force is exerted on the fixing part (9).

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