FR3030019A1 - SUPPORT DEVICE FOR AN EXTENDED ELEMENT AND HEATING FLOOR INCLUDING AT LEAST ONE SUCH DEVICE - Google Patents

Abstract

The present invention relates to support device for an elongated delimiting element or crack inductor slab, screed or concrete floor poured, more particularly intended to form an electric heating floor or hot water, said support device being in the form a piece adapted and adapted to cooperate with a base support, a bottom layer, a bottom or the like, to locally support the elongated element and to be integrated in the mass of the slab, screed or the like, during the casting of the latter support device (1) characterized in that it consists of a one-piece piece with three structural and functional parts, comprising, on the one hand, a lower part (4) comprising at least one support means and or anchor (5), on the other hand, an upper part (4 ') comprising a means (6) for engaging with an elongated element (2) by pinching, racking, embedding or the like and finally amiddle portion (4 ") rigidly connecting the upper (4) and lower (4 ') parts and providing a support surface for the elongated member (2).

Description

The present invention relates to the field of the production of embedding concrete or fluid screeds, particularly in the context of electric or hot water heating floors, and more particularly the problem of fractionation or controlled cracking of such slabs or screeds during the retraction of the concrete during the drying phase, or the peripheral delimitation of such slabs or screeds. In this general implementation framework, the invention relates to a support device for an elongated element, an assembly for producing a slab or screed comprising such devices and a heating floor incorporating at least one such support device. When laying screeds or slabs based on hydraulic binders, the practice recommends and the regulations require (for example: NF DTU 26.2 - DTU 65.14 - CPT 3614 and the technical notices for fluid screeds) the prediction of splitting joints ( or expansion) in order to avoid uncontrolled cracking of the slab or screed during the removal of the concrete (setting and hardening of the cement with evacuation of water). To control this cracking, the operators traditionally put in place an expanded polystyrene gasket whose height corresponds substantially to the thickness of the screed or slab. However, the implementation of this element generates elevations (beads) of concrete on both sides of the joint that require work recovery and finishing, tedious and expensive in terms of labor. In addition, in the context of the heating floor construction, the simple positioning of the strip is delicate and complicated, giving rise to adjustment, cutting and mounting work on site (to take into account the configuration of heating wires or ducts) which considerably increase the overall laying time and the overall cost. Document FR 1 564 439 discloses a method of establishing a non-surface-forming fractionation joint, comprising the prior placing of an elongated element with a band-shaped body completely embedded beneath the surface. mass of concrete (the height of the elongated element corresponds to approximately 1/2 to 2/3 of the thickness of the slab or 3030019 - 2 - screed). According to this document FR, the elongate member is held in place before pouring the yoke by support staples resting on the bottom by means of a fixing plate. Although avoiding the formation of concrete beads 5 on either side of the joint, the solution proposed by this document is not suitable for the production of floor heating, due to the presence of son or conduits arranged according to changing configurations, adapted to the geometry of the slab or screed. French patent application No. 14 53927 in the name of the applicant discloses a support device for overcoming this limitation. Nevertheless, this support device has a relatively complex constitution and a relatively high cost, does not cover certain particular situations encountered on site, possibly related to other functions to be performed by the elongated elements, or is limited in its possibilities of interaction with the support. In addition, this prior support device of the applicant does not ensure the maintenance of an elongated element type angle, for example intended to be placed along the peripheral edges of the slab or screed to be cast. The present invention aims to overcome these limitations and preferentially to meet a demand for a greater variety of application possibilities. To this end, the subject of the invention is a support device for an elongated delimiting element or crack inductor for slab, screed or concrete floor poured, more particularly intended to form an electric or hot water heating floor, said device support being in the form of a suitable piece and intended to cooperate with a base support, a bottom layer, a bottom or the like, to locally support the elongated element and to be integrated in the mass of the slab, screed or similar, when pouring the latter, support device characterized in that it consists of a one-piece piece with three structural and functional parts, 35 comprising, on the one hand, a lower part comprising at least one means of support and / or anchoring, on the other hand, an upper part comprising a means of engagement with an elongated element by pinching, racking, embedding or the like and finally, median portion rigidly connecting the upper and lower parts and providing a support surface for the elongated member considered. The invention will be better understood from the following description, which refers to preferred embodiments, given by way of non-limiting examples, and explained with reference to the appended diagrammatic drawings, in which: FIGS. 1D are respectively side elevational views (FIGS. 1A and 1B) and on a different scale in perspective (FIGS. 1C and 1D) of a preferred embodiment of a support device according to the invention; Figures 2A and 2D are respectively side elevational views (Figures 2A and 2B) and a different scale (Figures 2C and 2D) of a first embodiment of the invention; FIGS. 3A to 3D are respectively side elevational views (FIGS. 3A and 3B) and on a different scale (FIGS. 3C and 3D) of a second variant embodiment of the invention; Figures 4A to 4D are respectively side elevational views (Figures 4A and 4B) and a different scale (Figures 4C and 4D) of a third embodiment of the invention; FIGS. 5A to 5D are respectively side elevational views (FIGS. 5A and 5B) and perspective views (FIGS. 5C and 5D) of another embodiment of the support device according to the invention, and FIGS. 6A and 6B are views in side elevation and in perspective (on a different scale) of a level peg which may be part of an assembly for making a yoke comprising support devices as shown in FIGS. 1 to 5. FIGS. 1 to 5 show, in the form of various alternative embodiments, a support device 1 for an elongated elongation element 2 or a crack inductor for slab, screed or poured concrete floor, more particularly intended to form an electric heating floor or hot water. This support device 1 is in the form of a suitable piece and intended to cooperate with a base support, a bottom layer, a bottom or the like 3, to locally support the elongated element 2 and to be integrated in the mass. slab, screed or the like, when pouring the latter. According to the invention, the support device 1 consists of a one-piece part with three structural and functional parts, comprising, on the one hand, a lower part 4 comprising at least one support means and / or 5, on the other hand, an upper portion 4 'comprising a means 6 of engagement with an elongate member 2 by pinching, racking, embedding or the like and finally a middle portion 4 "rigidly connecting the upper parts 4 and lower 4 'and providing a support surface 7 for the elongate element 2 considered, providing at the upper interface with the elongate element 2 and at the lower interface with the support or the layer Underlying (e) 3, the possibility of various modes of interaction and connection the invention makes it possible to respond to many different situations in terms of nature, types, shapes and materials constituting the elongated element.2 and / or the underlying layer 3, and in terms of implantation environment of the support device 1 in question. Preferably, the means 5 and 6 of the upper and lower parts 4 and 4 'have the largest dimensions and comprise the vast majority of the constituent material, the middle part 4 "ensuring only a function of internal connection and rigid cohesion Said means 5 and 6 between them In accordance with a first constructive variant embodiment, particularly apparent from Figures 1 and 3, the support and anchoring means 5 comprise tabs 5 'spaced apart and intended to bear on the base support or the lower layer 3 and to receive between them the son or ducts 3 'of the heating floor Advantageously, the support and anchoring means 5 comprise four tabs 5' delimiting between them reception passages for the son or ducts 3 ', for mounting on the latter with at least a slight elastic nip.

As shown in Figures 1 and 3, the tabs 5 'may comprise, at their free ends intended to rest on the support or the underlying layer 3, thickening or protruding formations 15, possibly provided with ribs or ribbed , favoring the maintenance of the son or conduits 3 'between the legs 5'.

Thus, support devices 1 according to this first embodiment can be mounted by clipping on these son or conduits 3 '. In accordance with a second variant embodiment of the lower part 4 ', and as shown in FIGS. 1, 2 and 4, the support and anchoring means 5 comprise at least one notched pin or pin 5. ", with a conical body of tapered shape 8, extending from the middle portion 4" and 5 ending in a point 8 '. Advantageously, the tapered tapered body 8 has annular projecting notches 8 ", regularly spaced along the spindle 5", as well as possibly barbs or teeth 8 "formed from at least some of said notches 8 "(the latter providing an additional hooking, opposing like the notches 8" to the withdrawal of the pin 5 "depressed). The serrated pin 5 "allows deep and strong anchoring in the support or the underlying layer 3 'This support or layer, generally a thermally insulating, expanded or fibrous material, or a non-sublayer still solidified, must be such as to allow such penetration Depending on the circumstances of installation, the desired bond strength and a possible preservation of a rotational capacity of the support device 1 after implantation (preferably absence 20 12 "'barbells in this case), a single pin (Figures 1 and 4) or two pins (Figure 2) can be provided. In order to be able to adapt the length of the pin (s) 5 "to the thickness of the layer 3 'to penetrate by drilling, it may be provided that the or each notched pin 5" has a breakable structure, with at least one zone preferred fracture 9, preferably in the form of two elementary pins 9 "aligned with each other and physically interconnected by said zone 9 (FIG. 5) In order to be able to adapt the mounting mode of the support device 1 to the conditions encountered on site (thickness of variable underlying insulation, clipping or clipping on the duct, voluntary limitation of the insertion depth of the 5 "spindle), the spindle (s) 5", and possibly the support lugs 5 ', may (wind) have preferred breaking zones 9, 14, to shorten or break off one or more pins (or lugs) before placing the device 1 concerned in accordance with a variant of FIG. real According to the preferred embodiment of the invention, as shown in FIG. 1, the support and anchoring means simultaneously comprise support lugs 5 'and at least one notched pin 5 ", the notched pin 5" having a longer longitudinal extension than the legs 5 ', possibly being connected to the median portion 4 "by a preferred breaking zone 14.

Such a constructive variant makes it possible to combine the two implementation modes described above, or possibly to return to the only installation mode using the tabs 5 '. It may be noted that in the variants of FIGS. 2 and 4, the median portion 4 "serves as the maximum abutment abutment, whereas in the variant 10 of FIG. 1, with the elongate element 2, different possibilities can be proposed by the invention, thus for holding elongated elements 2 in a hard material, which is difficult to pierce, and / or to guarantee an oriented support of 15 element 2, it can be provided that the engagement means 6 of the upper part 4 'consists of a pair of flanges 10, at least one of which is elastically deformable and which delimit between them a receiving site 11 with pinching of the elongated element 2, or a wing of the latter (Figures 2 and 5).

On the other hand, when the material of the elongated element 2 can be easily pierced (cardboard, rigid expanded material, foam, etc.) and / or a possibility of orientation or freedom of angular positioning of the elongated element 2 relative to the device 1 must be available, while ensuring a secure hold of said element 2, it is advantageously provided, according to an alternative variant, that the engagement means 6 of the upper part 4 consists of a notched pin or pin, with a conical body of circular section and tapered shape 12, extending from the central portion 4 "and terminating in a point 12 ', said tapered conical body 12 preferably comprising annular projecting notches 12", as well as optionally barbs or teeth 12 "'formed from at least some of said notches 12". The upper toothed pin forming the means 6 has a shape and similar appearance, or is totally identical to the or a lower 5 "toothed pin forming the means 5. It can then lead to a substantially symmetrical structure with respect to the middle portion 4 ", although the dimensions of the bodies 8 and 12, and the dimensions, the number and the spacing of the notches 8" and 12 "may be different, as well as the presence or not of barbs 8" and 12 " . Although a limited number of constructive variants are shown in the accompanying figures, it is readily apparent to those skilled in the art that any combination of any abovementioned support and anchoring means with any commitment means 6 described above. According to an advantageous practical embodiment, each support device 1 consists of a one-piece piece of molded thermoplastic material, possibly loaded or reinforced. Advantageously, the median portion 4 "has a plate structure, preferably in disk form, or a hollow and profiled structure (variant of FIG. 5), said median portion 4" being optionally provided with holding pins 13 of the element 2 when the engaging means 6 is a groove or slot-shaped receiving site 11 defined by two wings 10, this groove or slot can be oriented vertically (FIG. ), for the reception of an elongate element 2 flat, strip or plate, or horizontally (Figures 5) for receiving an elongated element 2 in the form of angle. When, as shown in FIG. 5, the groove or receiving slot 11 is oriented horizontally, only the upper flange 10 can be elastically deformable (for gripping support), the lower flange then being integrated into or constituted by the median part 4 "in the form of a solid plate or hollow profile (of discoidal or rectangular shape) and also defining the support surface The invention also relates to an assembly for producing a concrete slab or screed for electric heating floor 30 or hot water, comprising at least one elongated element 2 inductor or crack generator rectilinear or not and / or at least one elongate element 2 of lateral delimitation, for example in the form of profiled angle, This set is characterized in it also comprises several support devices 1 as described above, preferably support devices 1 having between they 4 and / or lower upper parts 4 'of different shapes. This assembly may also comprise one or more level indicator (s) 16, of the type shown in FIG. 6, as well as devices of the type described in the aforementioned French patent application No. 14,539,228.

Finally, the invention also relates, although not shown in the figures, to an electric or hot water heating floor comprising a concrete slab or screed incorporating, on the underside, one or more son or conduits, preferably arranged in coils. and at least one elongate element generating a rectilinear crack or not and / or at least one elongated lateral delimiting element, for example in the form of a profiled angle, this element or these element (s) cooperating with at least two support devices , floor characterized in that at least one of the support devices 1, preferably all the support devices 1 is (are) of the type 15 described above, optionally according to several embodiments. Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications are possible, especially from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of the invention.

Claims (12)

CLAIMS1) Support device for an elongated delimiting element or crack inductor slab, screed or concrete floor poured, more particularly for forming a heated floor electric or hot water, said support device being in the form of a room adapted and intended to cooperate with a base support, a bottom layer, a bottom or the like, to locally support the elongated element and to be integrated in the mass of the slab, screed or the like, during the casting of the latter, device support (1) characterized in that it consists of a one-piece piece with three structural and functional parts, comprising, on the one hand, a lower part (4) comprising at least one support means and / or anchoring (5), on the other hand, an upper portion (4 ') having means (6) for engagement with an elongate member (2) by pinching, racking, embedding or the like and finally a middle portion (4). " ) rigidly connecting the upper (4) and lower (4 ') parts and providing a support surface (7) for the elongated element (2). 2) support device according to claim 1, characterized in that the support and anchoring means (5) comprise at least one pin or toothed rod (5 "), with a conical body of tapered shape (8), s extending from the middle part (4 ") and ending in a point (8 '). 3) support device according to claim 2, characterized in that the tapered conical body (8) has annular projecting notches (8 "), regularly spaced along the spindle (5"), as well as possibly barbs or barbs. teeth (8 ") formed from at least some of said notches (8"). 4) support device according to any one of claims 2 and 3, characterized in that the or each notched pin (5 ") has a breakable structure, with at least one preferred breaking zone (9), preferably in the form of two elementary pins (9 ") aligned with each other and mutually interconnected by said zone (9). 5) support device according to claim 1, characterized in that the support means and anchoring (5) comprise lugs (5 ') spaced apart and intended to bear against the base support 3030019 - 10 - or the lower layer (3) and to receive between them the son or conduits (3 ') of the heated floor. 6) Support device according to claim 5, characterized in that the support and anchoring means (5) comprise four lugs (5 ') delimiting between them receiving passages for the son or duct (3'), for mounting on these with at least a slight elastic nip. 7) Support device according to claims 2 to 6, characterized in that the support and anchoring means (5) simultaneously comprise support lugs (5 ') and at least one notched pin (5 "), the notched pin (5 ") having a longer longitudinal extension than the tabs (5 '), possibly being connected to the middle part (4") by a preferred breaking zone (14). 8) support device according to any one of claims 1 to 7, characterized in that the engagement means (6) of the upper part (4 ') consists of a pair of wings (10), the at least one is elastically deformable and which delimit between them a receiving site (11) with pinching of the elongated element (2), or a wing of the latter. 9) support device according to any one of claims 1 to 7, characterized in that the engagement means (6) of the upper part (4) consists of a notched pin or rod, with a conical body with circular section and of tapered shape (12), extending from the middle portion (4 ") and terminating in a point (12 '), said tapered tapered body (12) preferably comprising annular projecting notches (12"), as well as optionally barbs or teeth (12 "') formed from at least some of said notches (12"). 10) support device according to any one of claims 1 to 9, characterized in that it consists of a single piece of molded thermoplastic material, optionally loaded or reinforced, the middle portion (4 ") having a structure in plate, preferably in disc form, or a hollow and profiled structure, said median portion (4 ") possibly being provided with holding pins (13) of the elongated element (2) at its support surface (7). ). 11) Assembly for the realization of a slab or concrete floor for electric or hot water heating floor, comprising at least 3030019 - 11 - an elongated element inductor or crack generator rectilinear or not and / or at least one elongated element of lateral delimitation, for example in the form of a profiled angle, assembly characterized in that it also comprises several support devices (1) according to any one of claims 1 to 10, preferably support devices (1) having between them parts higher (4) and / or lower (4 ') of different shapes. 12) Electric or hot water heated floor comprising a concrete slab or screed incorporating, on the underside, one or more son or conduits, preferably arranged in coils, and at least one elongated element generating rectilinear crack or not and / or at least one elongated lateral delimiting element, for example in the form of a profiled angle, this or these element (s) cooperating with at least two support devices, characterized in that at least one of the support devices (1 ), preferably all the support devices (1) is (are) of the type according to any one of claims 1 to 10.