EP2143856B1 - Formwork device - Google Patents

Formwork device Download PDF

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Publication number
EP2143856B1
EP2143856B1 EP20090156678 EP09156678A EP2143856B1 EP 2143856 B1 EP2143856 B1 EP 2143856B1 EP 20090156678 EP20090156678 EP 20090156678 EP 09156678 A EP09156678 A EP 09156678A EP 2143856 B1 EP2143856 B1 EP 2143856B1
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EP
European Patent Office
Prior art keywords
connecting element
support
bottom wall
ashlar
retaining member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20090156678
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German (de)
French (fr)
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EP2143856B8 (en
EP2143856A1 (en
Inventor
Bertrand Croizier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BATICHAP
Original Assignee
CHAPAL ETS
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Publication date
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Publication of EP2143856A1 publication Critical patent/EP2143856A1/en
Application granted granted Critical
Publication of EP2143856B1 publication Critical patent/EP2143856B1/en
Publication of EP2143856B8 publication Critical patent/EP2143856B8/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/365—Stop-end shutterings

Definitions

  • the present invention relates to a formwork device, which is intended to be placed on a rubble in order to produce a formwork for a binder such as concrete.
  • such a device described for example in the document FR2 893 058 comprises on the one hand a support for a formwork board, intended to be placed against a first vertical face of the rubble, and secondly means for holding the support against the rubble.
  • Formwork devices of this type are already known, which have a number of disadvantages, among which we can mention the structural complexity of the device, which involves long and costly manufacturing steps and most often leads to significant drops in material; the difficulty of implementation, requiring several stages of positioning and adjustment; Insufficient maintenance, or in an inappropriate position, of the support against the rubble.
  • the present invention aims to overcome the drawbacks mentioned above, by providing a formwork device simple to manufacture and implement, and to quickly achieve a good positioning of the formwork board, so a formwork of very good quality.
  • the longitudinal direction corresponds to the transverse direction of the rubble, perpendicular to its first and second vertical faces.
  • the invention provides a formwork device very simple structure, since it is obtained from a U-shaped section on which are provided means that can be very simply made, for example by cutting and folding operations.
  • the connecting element is introduced into the receiving and guiding means provided on the support, the connecting element is placed on the rubble, with the supported against the second vertical face of the rubble, then moves the support longitudinally until it bears against the first vertical face of the rubble. There is then only to block the relative movement of the support and the connecting element. All of these steps are very simple and very quick to perform, and this leads to a very satisfactory positioning and maintenance of the device on the rubble.
  • the connecting element forms a spacer which remains bonded to the support and the retaining member at least during casting and curing of the concrete. After hardening of the concrete, and because of the temporary nature of the locking means, can be detached from the connecting element and the support. In this way, it is possible to recover the support, which can be reused later, while the connecting element, remaining in the hardened concrete, is lost.
  • the connecting element can be cut so that it does not protrude longitudinally from the first and second faces vertical rubble. It can also be provided that this connecting element is provided with a zone of lower resistance for breaking, this zone being located slightly recessed relative to the second vertical face of the rubble. Thus, the break in this area (while the concrete is not completely cured) allows the connecting element does not exceed longitudinally, and even that its end is set back.
  • the locking means comprise at least one protrusion formed on the connecting element, adapted to cooperate with a projection formed on the support in order to prevent inadvertent longitudinal displacement of the connecting element relative to the support.
  • the connecting element it is possible to provide on the connecting element a plurality of transversely oriented vertical projections, which allows adjustment of the longitudinal position of the support as a function of the distance between the first and second vertical faces of the rubble.
  • the relative longitudinal displacement of the support and the connecting element remains possible, despite the projections, when this movement is desired by the operator, and any appropriate means can be provided for this purpose.
  • the locking means may comprise at least one orifice formed in the connecting element and at least one orifice formed in the support, an assembly member such as a nail or a wedge that can be inserted in the two orifices placed in correspondence.
  • the connecting element is in the form of a flat shank comprising teeth protruding on its upper face, the teeth having an inclined face forming a ramp and a right face forming a stop and being able to cooperate with a protrusion arranged on the support, to prevent the longitudinal displacement of the connecting element relative to the support in one direction and to allow it in the opposite direction.
  • the support comprises two tongues formed by a cutout in the opposite wings of the U, the tongues being arranged to be folded substantially horizontally towards the inside of the U, one above the other, on both sides of the connecting element.
  • the tongue disposed above the connecting element may comprise at least one rib projecting downwards and extending transversely, said rib being adapted to cooperate with a tooth of the connecting element to block the longitudinal displacement of this connecting element.
  • the tabs may comprise reversible mutual assembly means.
  • the connecting element which is sandwiched between the two assembled tongues, but this connecting element can be released when the tabs are separated from one another.
  • the receiving and guiding means of the connecting element comprise a tongue cut in the bottom wall of the U and folded substantially horizontally, said tongue having two lateral flaps folded substantially horizontally so as to form a sheath .
  • the retaining member is made in one piece with the connecting element, a zone of least resistance being formed at the junction between the retaining member and the connecting element.
  • the part can be broken after curing the concrete, to separate the retaining member and the connecting element which remains in the concrete.
  • the area of least resistance is located substantially at the corresponding edge of the rubble.
  • the retaining member is a separate part of the connecting element, which comprises means for the longitudinal displacement of the connecting element and means temporarily blocking the connecting element with respect to the retaining member in the appropriate longitudinal position.
  • the U-shaped section comprises three tabs protruding from the bottom wall substantially longitudinally and whose free edge is provided to come into contact with the first vertical face of the stone, said three tabs having substantially the same longitudinal dimension.
  • One of the tabs may be formed by means for receiving and guiding the longitudinal displacement of the connecting element. According to another possible embodiment, a separate tab may be provided.
  • the U-shaped profile may further comprise a substantially horizontal slot in its bottom wall, near an end of said bottom wall, wherein the connecting element is slidable. This allows an inverted arrangement of the support, for the realization of formwork under a ceiling.
  • the invention provides an assembly comprising a device as previously described and an additional profile, said additional profile having a U-shape having a bottom wall and two lateral wings, and further comprising two legs making protruding from the bottom wall opposite and in the extension of the lateral wings, said additional profile being able to be inserted and removably fixed in the U-shaped section of the support, respectively in the upper part thereof in a first direction or in the lower part thereof in a second direction, so as to allow the realization of a formwork of greater height.
  • a shuttering device 1 is intended to be mounted on a rubble 2 comprising a first and a second vertical faces 3, 4 opposite and a horizontal upper face 5.
  • the longitudinal direction D1 is defined as the direction perpendicular to the vertical faces 3, 4 of the rubble 2 and the transverse direction D2 as the horizontal direction parallel to the vertical faces 3.
  • the vertical direction is denoted D3.
  • the formwork device 1 comprises a support 6, a connecting element 7 and a retaining member 8 which will now be described.
  • the support 6, illustrated on the figure 1 consists of a U-shaped metal section, comprising a bottom wall 9 and two lateral wings 10, 11. In the position of use, the support is substantially vertical, the wings 10, 11 extending opposite the rubble 2.
  • bottom wall 9 are made several cutouts which, after folding the parts thus obtained, form protruding elements.
  • lateral lugs 12, 13 substantially parallel to the wings 10, 11, each located substantially in the same plane as the corresponding flange 10, 11, and projecting away from the flanges 10, 11 in the direction of the rubble 2.
  • These lateral lugs 12, 13 are substantially rectangular and identical. They are obtained from two horizontal cutting lines 14, 15 and a median vertical cutting line which forms the free edges 16 of the tabs 12, 13, after folding of the tabs 12, 13 by 90 ° laterally outwardly . These free edges 16 will bear against the first vertical face 3 of the rubble 2, and the longitudinal dimension L of the tabs 12, 13 therefore corresponds to the spacing between the bottom wall 9 of the support 6 and said vertical face 3 of the rubble 2.
  • a cutout 30 which forms a tongue 18, after folding upwardly 90 ° and opposite the wings 10, 11, around a horizontal fold line 17.
  • This tongue 18 is substantially horizontal and projecting along D1 in the same direction as the tabs 12, 13.
  • the tongue 18 has a substantially rectangular and horizontal portion 19 and two side flaps 20, folded substantially horizontally under the portion 19, thus forming a sheath which serves as means for receiving the connecting element 7 and guiding its displacement along D1, as will be seen later.
  • the tongue may also be provided with a through hole 21 of vertical axis.
  • the longitudinal dimension of the tongue 18 is substantially equal to the longitudinal dimension L of the tabs 12, 13.
  • each of the flanges 10, 11 of the support 6 is produced a cutout 22 which, after folding of the parts thus obtained, forms a means for holding and / or blocking the connecting element 7.
  • Each cutout 22 makes it possible to form a substantially rectangular tongue 23 connected to the corresponding flange 10, 11 by one end forming a substantially horizontal fold line 24.
  • the tongue 23 comprises on the one hand an ear 25 at its free end, and on the other hand a light 26 near the fold line 24.
  • the fold lines 24 are arranged substantially at the same height on the wings 10, 11, but the cutouts 22 are made one upwards and the other down.
  • the wing 10 comprises a tongue 23 which can be folded horizontally, towards the inside of the U, by folding 90 ° downwards
  • the wing 11 comprises a tongue 23 which can be folded down. horizontally, towards the inside of the U, by bending 90 ° upwards.
  • the two tabs 23 are horizontal, one above the other, they can be joined to one another by engagement of the ear 25 with a tongue 23 in the slot 26 of the other tongue 23.
  • This assembly is not definitive, and the tabs 23 may be subsequently separated.
  • the tabs 23 extend substantially from one flange 10, 11 to the other.
  • the tongue 23 which will be located above the other tongue has, on its lower face 27, one or more ribs 28 projecting downwards and oriented transversely (according to D2).
  • This rib can be obtained by a localized deformation of the material (rolling, action of a press, etc.).
  • the link element 7 is now described with reference to the figure 3 .
  • the connecting element 7 is in the form of a flat rod, which makes it possible to obtain a very good support on the upper horizontal face of the rubble 2. In the embodiment shown, it has on the upper face of the connecting element 7 of the teeth 29 projecting upwards. However, the presence of teeth is not essential, other locking means may be envisaged.
  • Each tooth 29 has an inclined face forming a ramp 31 and a right face 32, vertical, forming a stop.
  • the connecting element 7 further comprises a plurality of orifices 42 of vertical axis.
  • the connecting element 7 may be made of a material belonging to the group comprising: stainless steel, brass, aluminum, composites, two-component steel and composite. This avoids the corrosion problems encountered in the prior art and, in the case of the use at least partially of a composite, the thermal bridges are eliminated.
  • the figure 2 illustrates a first embodiment of a retaining member 8, which here is a separate part of the connecting element 7.
  • the retaining member 8 is formed of a U-profile, placed vertically during its use, this profile comprising on the one hand a bottom wall 33 intended to bear against the second vertical face 4 of the rubble 2 and secondly two lateral wings 34, 35 extending opposite said vertical face 4.
  • a tab 36 is provided with side flaps 37 folded substantially horizontally over it.
  • a sleeve is thus obtained in which the connecting element 7 can be moved longitudinally, the sleeve guiding this displacement.
  • a through hole 38 of vertical axis, forming a temporary locking means of the connecting element 7, is formed in the tab 36.
  • Other locking means may be envisaged.
  • the bottom wall 33 has a notch 39 at the cutout forming the tab 36.
  • the flaps 37 folded are substantially in the same plane as the upper edge 40 of the bottom wall 33 , without exceeding above.
  • the connecting element 7 is inserted in the tongue 18 of the support 6, then the tongues 23 are folded horizontally, above and below the connecting element 7, and assembled one to the other. other by engagement of the ears 25 in the lights 26, on both sides (according to D2) of the connecting element 7.
  • This assembly is associated with the retaining member 8, by inserting the connecting element 7 into the lug 36 and introducing a nail 41 into the hole 38 placed in correspondence with an orifice 42 of the connecting element 7.
  • the connecting element 7 is placed in abutment on the horizontal upper face of the rubble 2, with the retaining member 8 bearing against the second vertical face 4 of the rubble 2.
  • the connecting element 7 is locked with respect to the retaining member 8 by virtue of the nail 41. Moreover, it is locked with respect to the support 6 by the cooperation between the vertical face 32 of the teeth 29 of the connecting element. 7 and the projections 28 of the tongue 23 which prevent the distance of the support 6 from the rubble 2 (see figure 5 ). It is possible to provide additional locking means for the connecting element 7 with respect to the support 6. For this purpose, a nail can be introduced into the hole 21 of the tongue 18, placed in correspondence with an orifice 42 of the connecting element 7.
  • a riser may be fixed on the support 6.
  • a shuttering board (not shown) is placed in abutment on the tongue 18, against the bottom wall 9 of the support 6, being fixed, for example by inserted nails in the holes 46 formed in the bottom wall 9.
  • the thickness of the board corresponds to the distance L, so that the board is placed in the continuity of the first vertical face 3 of the rubble 2. It is then possible to proceed with the casting concrete.
  • the connecting element 7 remains in the concrete and must be cut. The cutting can be done using a tool (saw) or by hand if the connecting element 7 has a zone of least resistance (existing naturally between two teeth 29 or specifically provided).
  • the figure 6 illustrates a second embodiment of the connecting element 7. This is made in one piece with the retaining member 8 which is for example in the form of a curved rod S supporting the support on the second vertical face 4 of the rubble 2. An area of weakness 43 is formed at the junction between the retaining member 8 and the connecting element 7. For the rest, the formwork device 1 is unchanged.
  • the retaining member 8, forming a single piece with the connecting element 7, can not not be reused.
  • a tool such as a screwdriver
  • Another area of least resistance 47 may also be provided at the right of the first face vertical 3 of the rubble 2.
  • a wedge 45 as illustrated on the figure 7 , which is placed in a hole of corresponding section rectangular or square, formed in the connecting element 7 and the tongue 18 and / or the tab 36.
  • FIG. 8 Another embodiment of the support 6 is illustrated on the figure 8 , this support having the same orientation as that illustrated on the figure 1 .
  • This support 6 consists of a U-shaped section generally having the same structure as the support of the figure 1 , namely a bottom wall 9 and two lateral wings 10, 11, and which has the following differences.
  • the two lateral tabs 12, 13 are obtained from two horizontal cutting lines 14, 15 and two distinct vertical cutting lines 50, 51 which form the free edges 16 of these tabs 12, 13, after downturn.
  • the same support 6 having a bottom wall 9 of width (according to D2) given 2L, it is possible to obtain tabs 12, 13 having a maximum length of L (case of the figure 1 ) or a length L 'less than L. It is thus possible to have a range of supports 6 that can adapt to different thicknesses of formwork boards.
  • the wings 10, 11 of the support 6 do not have cutouts, and therefore the tabs 23 are not found.
  • the receiving means and guide the connecting element 7 comprise a U-shaped part 52 separate from the U-shaped section and attached thereto.
  • This U-shaped piece 52 comprises two substantially horizontal branches 53, 54 and a rounded base 55.
  • the first branch 53 has a free end 56 fixed to the bottom wall 9 of the U-profile, for example by welding, and extends to the base 55 in the same direction as the lateral wings 10, 11 of the profile.
  • the second branch 54 is longer (dimension according to D1) than the first; it extends from the base 55 towards the rubble 2 and passes through a slot 56 formed in the bottom wall 9 of the U-shaped section.
  • the free end 57 of the second leg 54 is set back from the edges free 16 tabs 12, 13, that is to say that the second branch 54 will not be in contact with the rubble in mounted position.
  • first horizontal lumen 58 formed in the base 55 and a second horizontal lumen 59 formed in the bottom wall 9, above the slot 56 and forming a single opening therewith.
  • the two lights 58, 59 are located in alignment with one another according to D1 and are intended to receive the connecting element 7 and guide its sliding.
  • the branches 53, 54 of the U-shaped part 52 have corresponding orifices 60 for receiving a nail (for example) for blocking the connecting element 7.
  • a cutout 61 which forms a tab 62, after folding 90 ° downwards and opposite the wings 10, 11, around a horizontal folding line 63.
  • This tab 62 is substantially horizontal and projecting along D1 in the same direction as the tabs 12, 13; it has a longitudinal dimension substantially equal to the longitudinal dimension L 'of the tabs 12, 13, and thus forms a third support against the rubble 2, in the mounted position. It is possible to provide that the longitudinal dimension of the tab 62 is 1 to 2 mm larger than L '. This makes it possible to ensure the verticality of the support 6 after the thrust of the concrete which is exerted on the shuttering board and tends to slightly tilt the support 6.
  • the U-profile 6 further comprises a substantially horizontal slot 64 formed in its bottom wall 9, under the fold line 63 and near an end of said bottom wall 9. The role of this slot 64 will be explained more far.
  • the U-shaped section 6 has orifices 65 formed in the wings 10, 11, vis-à-vis, to allow the attachment of a riser, as will be seen later.
  • the support 6 which has just been described can be used in the position it occupies on the figure 8 , similar to the layout shown on the figure 4 .
  • the tabs 12, 13, 62 bear against the first vertical face 3 of the rubble 2.
  • the connecting element 7 is inserted in the slots 58, 59, and is thus above the second branch 54 of the U-shaped part 52.
  • the formwork board therefore rests directly on the connecting element 7.
  • the corresponding advantage is that there is no extra material thickness between this connecting element 7 and the board.
  • This support 6 can also be used in the "upside-down" position, as illustrated in FIG. figure 9 , especially when it comes to formwork under a ceiling.
  • the connecting element is not inserted in the slots 58, 59 but in the slot 64.
  • This connecting element is advantageously provided with a bent end portion which serves as a retaining member 8. The support 6 is always in contact with the rubble 2 by the free ends of the tabs 12, 13, 62.
  • an additional profile 66 which is U-shaped having a bottom wall 67 and two side wings 68, 69.
  • the additional section 66 further comprises two tabs 70, 71 projecting from the bottom wall 67 in the opposite direction and in the extension of the lateral wings 68, 69, at one end of the bottom wall 67.
  • the bottom wall 67 of this additional profile 66 has holes 72 for fastening, for example by nails, of a formwork board.
  • the side wings 68, 69 have orifices 73, facing each other.
  • the additional section 66 plays a role of enhancement, as seen on the figure 11 . Its dimensions are such that it can be inserted into the U-shaped profile forming the support 6.
  • first additional profile 66 mounted above the U-shaped piece 52 in a first direction, with the tabs 70, 71 directed in the same direction as the flanges 10, 11, the bottom wall 67 of the additional section 66 being thus remote from the bottom wall 9 of the support 6.
  • the additional profiles 66 are attached to the support 6 removably by means of members such as keys (not shown) inserted transversely into the orifices 65, 73 placed in correspondence.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
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Description

La présente invention concerne un dispositif de coffrage, qui est destiné à être placé sur un moellon afin de réaliser un coffrage pour un liant tel que du béton.The present invention relates to a formwork device, which is intended to be placed on a rubble in order to produce a formwork for a binder such as concrete.

Concrètement, un tel dispositif décrit par exemple dans le document FR2 893 058 , comprend d'une part un support pour une planche de coffrage, destiné à être placé contre une première face verticale du moellon, et d'autre part des moyens de maintien du support contre le moellon.Concretely, such a device described for example in the document FR2 893 058 , comprises on the one hand a support for a formwork board, intended to be placed against a first vertical face of the rubble, and secondly means for holding the support against the rubble.

On connaît déjà des dispositifs de coffrage de ce type, qui présentent un certain nombre d'inconvénients, parmi lesquels on peut citer la complexité structurelle du dispositif, qui implique des étapes de fabrication longues et coûteuses et conduit le plus souvent à des chutes importantes de matière ; la difficulté de mise en oeuvre, nécessitant plusieurs étapes de positionnement et de réglage ; le maintien insuffisant, ou dans une position inappropriée, du support contre le moellon.Formwork devices of this type are already known, which have a number of disadvantages, among which we can mention the structural complexity of the device, which involves long and costly manufacturing steps and most often leads to significant drops in material; the difficulty of implementation, requiring several stages of positioning and adjustment; Insufficient maintenance, or in an inappropriate position, of the support against the rubble.

La présente invention vise à remédier aux inconvénients mentionnés ci-dessus, en fournissant un dispositif de coffrage simple à fabriquer et à mettre en oeuvre, et permettant de réaliser rapidement un bon positionnement de la planche de coffrage, donc un coffrage de très bonne qualité.The present invention aims to overcome the drawbacks mentioned above, by providing a formwork device simple to manufacture and implement, and to quickly achieve a good positioning of the formwork board, so a formwork of very good quality.

A cet effet, l'invention concerne un dispositif destiné à être placé sur un moellon afin de réaliser un coffrage pour un liant tel que du béton, le dispositif comprenant d'une part un support pour une planche de coffrage, destiné à être placé contre une première face verticale du moellon, et d'autre part des moyens de maintien du support contre le moellon, lesdits moyens de maintien comportant :

  • un élément de liaison destiné à reposer sensiblement longitudinalement sur la face supérieure du moellon, ledit élément de liaison étant, à sa première partie extrême, lié au support avec possibilité de déplacement longitudinal, et, à sa deuxième partie extrême, lié à un organe de retenue apte à coopérer avec une deuxième face verticale du moellon, opposée à la première face verticale ;
  • et des moyens de blocage temporaire de l'élément de liaison par rapport au support dans la position longitudinale appropriée permettant un serrage du moellon entre le support et l'organe de retenue.
To this end, the invention relates to a device intended to be placed on a rubble in order to form a formwork for a binder such as concrete, the device comprising on the one hand a support for a formwork board, intended to be placed against a first vertical face of the rubble, and secondly means for holding the support against the rubble, said holding means comprising:
  • a connecting element intended to rest substantially longitudinally on the upper face of the rubble, said connecting element being, at its first end part, connected to the support with possibility of longitudinal displacement, and, at its second end part, connected to a body of retainer adapted to cooperate with a second vertical face of the rubble, opposite to the first vertical face;
  • and means for temporarily blocking the connecting element relative to the support in the appropriate longitudinal position for clamping the rubble between the support and the retaining member.

Selon une définition générale de l'invention, le support comprend un profilé en U possédant une paroi de fond et deux ailes latérales qui, en position d'utilisation, s'étendent à l'opposé du moellon tandis que la paroi de fond est disposée sensiblement verticalement et parallèlement à la première face verticale du moellon, ledit profilé comportant :

  • trois pattes faisant saillie de la paroi de fond sensiblement longitudinalement et dont le bord libre est prévu pour venir en contact avec la première face verticale du moellon, lesdites trois pattes possédant sensiblement la même dimension longitudinale, ladite dimension longitudinale définissant l'écartement entre la première face verticale du moellon et la paroi de fond du U et correspondant à l'épaisseur de la planche de coffrage destinée à être placée contre la paroi de fond ;
  • des moyens de réception et de guidage du déplacement longitudinal de l'élément de liaison, faisant saillie de la paroi de fond sensiblement longitudinalement et formant en outre un moyen d'appui pour la planche de coffrage.
According to a general definition of the invention, the support comprises a U-shaped section having a bottom wall and two lateral wings which, in position of use, extend opposite the rubble while the bottom wall is disposed substantially vertically and parallel to the first vertical face of the rubble, said section comprising:
  • three legs protruding from the bottom wall substantially longitudinally and whose free edge is provided to come into contact with the first vertical face of the stone, said three tabs having substantially the same longitudinal dimension, said longitudinal dimension defining the spacing between the first vertical face of the rubble and the bottom wall of the U and corresponding to the thickness of the formwork board to be placed against the bottom wall;
  • means for receiving and guiding the longitudinal displacement of the connecting element, protruding from the bottom wall substantially longitudinally and further forming a support means for the shuttering board.

La direction longitudinale correspond à la direction transversale du moellon, perpendiculairement à ses première et deuxième faces verticales.The longitudinal direction corresponds to the transverse direction of the rubble, perpendicular to its first and second vertical faces.

Ainsi, l'invention fournit un dispositif de coffrage de structure très simple, puisqu'il est obtenu à partir d'un profilé en U sur lequel sont prévus des moyens pouvant être très simplement réalisés, par exemple par des opérations de découpe et pliage.Thus, the invention provides a formwork device very simple structure, since it is obtained from a U-shaped section on which are provided means that can be very simply made, for example by cutting and folding operations.

En pratique, pour la mise en place du dispositif sur le moellon, on introduit l'élément de liaison dans les moyens de réception et de guidage ménagés sur le support, on place l'élément de liaison sur le moellon, avec l'organe de retenue en appui contre la deuxième face verticale du moellon, puis on déplace le support longitudinalement jusqu'à ce qu'il vienne en appui contre la première face verticale du moellon. Il n'y a alors plus qu'à bloquer le déplacement relatif du support et de l'élément de liaison. L'ensemble de ces étapes est très simple et très rapide à réaliser, et cela conduit à un positionnement et un maintien très satisfaisant du dispositif sur le moellon.In practice, for setting up the device on the rubble, the connecting element is introduced into the receiving and guiding means provided on the support, the connecting element is placed on the rubble, with the supported against the second vertical face of the rubble, then moves the support longitudinally until it bears against the first vertical face of the rubble. There is then only to block the relative movement of the support and the connecting element. All of these steps are very simple and very quick to perform, and this leads to a very satisfactory positioning and maintenance of the device on the rubble.

L'élément de liaison forme une entretoise qui reste liée au support et à l'organe de retenue au moins pendant la coulée et le durcissement du béton. Après durcissement du béton, et du fait du caractère temporaire des moyens de blocage, on peut désolidariser l'élément de liaison et le support. De cette façon, il est possible de récupérer le support, qui pourra être réutilisé ultérieurement, tandis que l'élément de liaison, restant dans le béton durci, est perdu. Lors d'une étape de finition, l'élément de liaison peut être coupé afin qu'il ne dépasse pas longitudinalement de la première et de la deuxième faces verticales du moellon. On peut également prévoir que cet élément de liaison soit muni d'une zone de plus faible résistance permettant sa rupture, cette zone étant située légèrement en retrait par rapport à la deuxième face verticale du moellon. Ainsi, la rupture au niveau de cette zone (alors que le béton n'est pas complètement durci) permet que l'élément de liaison ne dépasse pas longitudinalement, et même que son extrémité soit en retrait.The connecting element forms a spacer which remains bonded to the support and the retaining member at least during casting and curing of the concrete. After hardening of the concrete, and because of the temporary nature of the locking means, can be detached from the connecting element and the support. In this way, it is possible to recover the support, which can be reused later, while the connecting element, remaining in the hardened concrete, is lost. During a finishing step, the connecting element can be cut so that it does not protrude longitudinally from the first and second faces vertical rubble. It can also be provided that this connecting element is provided with a zone of lower resistance for breaking, this zone being located slightly recessed relative to the second vertical face of the rubble. Thus, the break in this area (while the concrete is not completely cured) allows the connecting element does not exceed longitudinally, and even that its end is set back.

Selon une réalisation possible, les moyens de blocage comprennent au moins une saillie ménagée sur l'élément de liaison, apte à coopérer avec une saillie ménagée sur le support afin d'empêcher le déplacement longitudinal intempestif de l'élément de liaison par rapport au support. On peut par exemple prévoir sur l'élément de liaison une pluralité de saillies verticales orientées transversalement, ce qui permet un réglage de la position longitudinale du support en fonction de la distance entre les première et deuxième faces verticales du moellon. De préférence, le déplacement longitudinal relatif du support et de l'élément de liaison reste possible, malgré les saillies, lorsque ce déplacement est souhaité par l'opérateur, et tout moyen approprié peut être prévu à cet effet.According to one possible embodiment, the locking means comprise at least one protrusion formed on the connecting element, adapted to cooperate with a projection formed on the support in order to prevent inadvertent longitudinal displacement of the connecting element relative to the support. . For example, it is possible to provide on the connecting element a plurality of transversely oriented vertical projections, which allows adjustment of the longitudinal position of the support as a function of the distance between the first and second vertical faces of the rubble. Preferably, the relative longitudinal displacement of the support and the connecting element remains possible, despite the projections, when this movement is desired by the operator, and any appropriate means can be provided for this purpose.

En variante ou en complément, les moyens de blocage peuvent comprendre au moins un orifice ménagé dans l'élément de liaison et au moins un orifice ménagé dans le support, un organe d'assemblage tel qu'un clou ou un coin pouvant être inséré dans les deux orifices placés en correspondance.Alternatively or additionally, the locking means may comprise at least one orifice formed in the connecting element and at least one orifice formed in the support, an assembly member such as a nail or a wedge that can be inserted in the two orifices placed in correspondence.

Avantageusement, l'élément de liaison se présente sous la forme d'une tige plate comprenant des dents en saillie sur sa face supérieure, les dents possédant une face inclinée formant une rampe et une face droite formant butée et étant aptes à coopérer avec une saillie ménagée sur le support, afin d'empêcher le déplacement longitudinal de l'élément de liaison par rapport au support dans un sens et de l'autoriser dans le sens opposé.Advantageously, the connecting element is in the form of a flat shank comprising teeth protruding on its upper face, the teeth having an inclined face forming a ramp and a right face forming a stop and being able to cooperate with a protrusion arranged on the support, to prevent the longitudinal displacement of the connecting element relative to the support in one direction and to allow it in the opposite direction.

Selon une réalisation possible, le support comporte deux languettes formées par une découpe dans les ailes opposées du U, les languettes étant agencées pour pouvoir être repliées sensiblement à l'horizontale vers l'intérieur du U, l'une au-dessus de l'autre, de part et d'autre de l'élément de liaison.According to one possible embodiment, the support comprises two tongues formed by a cutout in the opposite wings of the U, the tongues being arranged to be folded substantially horizontally towards the inside of the U, one above the other, on both sides of the connecting element.

Dans ce cas, la languette disposée au-dessus de l'élément de liaison peut comporter au moins une nervure en saillie vers le bas et s'étendant transversalement, ladite nervure étant apte à coopérer avec une dent de l'élément de liaison pour bloquer le déplacement longitudinal de cet élément de liaison.In this case, the tongue disposed above the connecting element may comprise at least one rib projecting downwards and extending transversely, said rib being adapted to cooperate with a tooth of the connecting element to block the longitudinal displacement of this connecting element.

Avantageusement, les languettes peuvent comprendre des moyens d'assemblage mutuel réversibles. Ainsi, on obtient un très bon maintien de l'élément de liaison, qui est pris en sandwich entre les deux languettes assemblées, mais cet élément de liaison peut être libéré lorsque les languettes sont séparées l'une de l'autre.Advantageously, the tabs may comprise reversible mutual assembly means. Thus, we obtain a very good maintenance of the connecting element, which is sandwiched between the two assembled tongues, but this connecting element can be released when the tabs are separated from one another.

Par exemple, les moyens de réception et de guidage de l'élément de liaison comprennent une languette découpée dans la paroi de fond du U et repliée sensiblement horizontalement, ladite languette comportant deux rabats latéraux repliés sensiblement à l'horizontale de sorte à former un fourreau.For example, the receiving and guiding means of the connecting element comprise a tongue cut in the bottom wall of the U and folded substantially horizontally, said tongue having two lateral flaps folded substantially horizontally so as to form a sheath .

En variante, on peut prévoir que les moyens de réception et de guidage de l'élément de liaison comprennent une pièce en U rapportée sur le profilé en U, ladite pièce en U comprenant :

  • une première branche qui possède une extrémité libre fixée sur la paroi de fond du profilé en U et qui s'étend sensiblement horizontalement dans le même sens que les ailes latérales ;
  • une base pourvue d'une première lumière horizontale dans laquelle l'élément de liaison est apte à coulisser ;
  • une deuxième branche plus longue que la première, qui s'étend depuis la base sensiblement horizontalement et passe à travers une fente ménagée dans la paroi de fond du profilé en U, ladite fente étant surmontée d'une seconde lumière horizontale qui est située dans l'alignement de la première lumière horizontale et dans laquelle l'élément de liaison est apte à coulisser.
As a variant, provision may be made for the means for receiving and guiding the connecting element to comprise a U-shaped part attached to the U-shaped section, said U-shaped part comprising:
  • a first branch which has a free end fixed to the bottom wall of the U-shaped section and which extends substantially horizontally in the same direction as the lateral wings;
  • a base provided with a first horizontal lumen in which the connecting element is slidable;
  • a second leg longer than the first, which extends from the base substantially horizontally and passes through a slot in the bottom wall of the U-shaped section, said slot being surmounted by a second horizontal light which is located in the alignment of the first horizontal light and in which the connecting element is slidable.

Selon un premier mode de réalisation, l'organe de retenue est réalisé d'une seule pièce avec l'élément de liaison, une zone de moindre résistance étant ménagée à la jonction entre l'organe de retenue et l'élément de liaison. Ainsi, la pièce peut être rompue après durcissement du béton, pour séparer l'organe de retenue et l'élément de liaison qui reste pris dans le béton. De préférence, pour simplifier les opérations de finition, la zone de moindre résistance est située sensiblement au niveau de l'arête correspondante du moellon.According to a first embodiment, the retaining member is made in one piece with the connecting element, a zone of least resistance being formed at the junction between the retaining member and the connecting element. Thus, the part can be broken after curing the concrete, to separate the retaining member and the connecting element which remains in the concrete. Preferably, to simplify the finishing operations, the area of least resistance is located substantially at the corresponding edge of the rubble.

Selon un deuxième mode de réalisation, l'organe de retenue est une pièce distincte de l'élément de liaison, qui comporte des moyens permettant le déplacement longitudinal de l'élément de liaison et des moyens de blocage temporaire de l'élément de liaison par rapport à l'organe de retenue dans la position longitudinale appropriée.According to a second embodiment, the retaining member is a separate part of the connecting element, which comprises means for the longitudinal displacement of the connecting element and means temporarily blocking the connecting element with respect to the retaining member in the appropriate longitudinal position.

Selon l'invention, le profilé en U comporte trois pattes faisant saillie de la paroi de fond sensiblement longitudinalement et dont le bord libre est prévu pour venir en contact avec la première face verticale du moellon, lesdites trois pattes possédant sensiblement la même dimension longitudinale.According to the invention, the U-shaped section comprises three tabs protruding from the bottom wall substantially longitudinally and whose free edge is provided to come into contact with the first vertical face of the stone, said three tabs having substantially the same longitudinal dimension.

L'une des pattes peut être formée par les moyens de réception et de guidage du déplacement longitudinal de l'élément de liaison. Selon une autre réalisation possible, une patte distincte peut être prévue.One of the tabs may be formed by means for receiving and guiding the longitudinal displacement of the connecting element. According to another possible embodiment, a separate tab may be provided.

Le profilé en U peut en outre comporter une fente sensiblement horizontale pratiquée dans sa paroi de fond, à proximité d'une extrémité de ladite paroi de fond, dans laquelle l'élément de liaison est apte à coulisser. Ceci permet une disposition inversée du support, pour la réalisation de coffrages sous un plafond.The U-shaped profile may further comprise a substantially horizontal slot in its bottom wall, near an end of said bottom wall, wherein the connecting element is slidable. This allows an inverted arrangement of the support, for the realization of formwork under a ceiling.

Enfin, selon un autre aspect, l'invention vise un ensemble comprenant un dispositif tel que précédemment décrit et un profilé additionnel, ledit profilé additionnel ayant une forme de U possédant une paroi de fond et deux ailes latérales, et comprenant en outre deux pattes faisant saillie de la paroi de fond à l'opposé et dans le prolongement des ailes latérales, ledit profilé additionnel étant apte à être inséré et fixé de façon amovible dans le profilé en U du support, respectivement en partie haute de celui-ci dans un premier sens ou en partie basse de celui-ci dans un deuxième sens, de façon à permettre la réalisation d'un coffrage de plus grande hauteur.Finally, according to another aspect, the invention provides an assembly comprising a device as previously described and an additional profile, said additional profile having a U-shape having a bottom wall and two lateral wings, and further comprising two legs making protruding from the bottom wall opposite and in the extension of the lateral wings, said additional profile being able to be inserted and removably fixed in the U-shaped section of the support, respectively in the upper part thereof in a first direction or in the lower part thereof in a second direction, so as to allow the realization of a formwork of greater height.

On décrit à présent, à titre d'exemples non limitatifs, plusieurs modes de réalisation possibles de l'invention, en référence aux figures annexées :

  • La figure 1 est une vue en perspective d'un support appartenant au dispositif de coffrage selon un premier mode de réalisation de l'invention ;
  • La figure 2 est une vue en perspective d'un premier mode de réalisation d'un organe de retenue appartenant au dispositif de coffrage ;
  • La figure 3 est une vue latérale d'un élément de liaison appartenant au dispositif de coffrage ;
  • La figure 4 est une vue en perspective du dispositif de coffrage comportant les pièces des figures 1 à 3, monté sur un moellon ;
  • La figure 5 est une vue latérale schématique du montage de l'élément de liaison de la figure 4 dans le support et l'organe de retenue ;
  • La figure 6 est une vue latérale d'un deuxième mode de réalisation d'un organe de retenue, placé sur un moellon ;
  • La figure 7 est une vue en perspective d'un coin servant de moyen de blocage ;
  • La figure 8 est une vue en perspective d'un support appartenant au dispositif de coffrage selon un deuxième mode de réalisation de l'invention ;
  • La figure 9 est une vue en perspective du dispositif de coffrage comportant le support de la figure 8, monté sur un moellon ;
  • La figure 10 est une vue en perspective d'un profilé additionnel pouvant être associé au support ; et
  • La figure 11 est une vue en perspective d'un ensemble de coffrage comprenant le support de la figure 8 et deux profilés additionnels comme celui illustré sur la figure 10.
Several possible embodiments of the invention are now described by way of nonlimiting examples, with reference to the appended figures:
  • The figure 1 is a perspective view of a support belonging to the shuttering device according to a first embodiment of the invention;
  • The figure 2 is a perspective view of a first embodiment of a retaining member belonging to the formwork device;
  • The figure 3 is a side view of a connecting member belonging to the formwork device;
  • The figure 4 is a perspective view of the formwork device comprising the parts of Figures 1 to 3 , mounted on a rubble;
  • The figure 5 is a schematic side view of the mounting of the connecting element of the figure 4 in the support and the retaining member;
  • The figure 6 is a side view of a second embodiment of a retaining member, placed on a rubble;
  • The figure 7 is a perspective view of a wedge serving as a locking means;
  • The figure 8 is a perspective view of a support belonging to the shuttering device according to a second embodiment of the invention;
  • The figure 9 is a perspective view of the formwork device comprising the support of the figure 8 , mounted on a rubble;
  • The figure 10 is a perspective view of an additional profile that can be associated with the support; and
  • The figure 11 is a perspective view of a formwork assembly comprising the support of the figure 8 and two additional sections like the one shown on the figure 10 .

Comme illustré sur la figure 4, un dispositif de coffrage 1 selon l'invention est destiné à être monté sur un moellon 2 comprenant une première et une deuxième faces verticales 3, 4 opposées et une face supérieure 5 horizontale.As illustrated on the figure 4 , a shuttering device 1 according to the invention is intended to be mounted on a rubble 2 comprising a first and a second vertical faces 3, 4 opposite and a horizontal upper face 5.

On définit la direction longitudinale D1 comme la direction perpendiculaire aux faces verticales 3, 4 du moellon 2 et la direction transversale D2 comme la direction horizontale parallèle aux faces verticales 3. La direction verticale est notée D3. Dans la suite de la description des figures 1 à 7, les différentes pièces constitutives du dispositif de coffrage 1 seront décrites dans la position qu'elles occupent lors de leur utilisation pour la réalisation du coffrage comme illustré sur la figure 4.The longitudinal direction D1 is defined as the direction perpendicular to the vertical faces 3, 4 of the rubble 2 and the transverse direction D2 as the horizontal direction parallel to the vertical faces 3. The vertical direction is denoted D3. In the following description of the Figures 1 to 7 , the various constituent parts of the formwork device 1 will be described in the position they occupy when they are used for the production of the formwork as illustrated in FIG. figure 4 .

Le dispositif de coffrage 1 comprend un support 6, un élément de liaison 7 et un organe de retenue 8 qui vont maintenant être décrits.The formwork device 1 comprises a support 6, a connecting element 7 and a retaining member 8 which will now be described.

Le support 6, illustré sur la figure 1, est constitué d'un profilé métallique en U, comprenant une paroi de fond 9 et deux ailes latérales 10, 11. En position d'utilisation, le support est sensiblement vertical, les ailes 10, 11 s'étendant à l'opposé du moellon 2.The support 6, illustrated on the figure 1 , consists of a U-shaped metal section, comprising a bottom wall 9 and two lateral wings 10, 11. In the position of use, the support is substantially vertical, the wings 10, 11 extending opposite the rubble 2.

Dans la paroi de fond 9 sont réalisées plusieurs découpes qui, après repli des parties ainsi obtenues, forment des éléments en saillie.In the bottom wall 9 are made several cutouts which, after folding the parts thus obtained, form protruding elements.

Ainsi, on a tout d'abord deux pattes latérales 12, 13 sensiblement parallèles aux ailes 10, 11, situées chacune sensiblement dans le même plan que l'aile 10, 11 correspondante, et faisant saillie à l'opposé des ailes 10, 11, en direction du moellon 2. Ces pattes latérales 12, 13 sont sensiblement rectangulaires et identiques. Elles sont obtenues à partir de deux lignes horizontales de découpe 14, 15 et d'une ligne verticale médiane de découpe qui forme les bords libres 16 des pattes 12, 13, après repli des pattes 12, 13 de 90° latéralement vers l'extérieur. Ces bords libres 16 vont venir en appui contre la première face verticale 3 du moellon 2, et la dimension longitudinale L des pattes 12, 13 correspond donc à l'écartement entre la paroi de fond 9 du support 6 et ladite face verticale 3 du moellon 2.Thus, first there are two lateral lugs 12, 13 substantially parallel to the wings 10, 11, each located substantially in the same plane as the corresponding flange 10, 11, and projecting away from the flanges 10, 11 in the direction of the rubble 2. These lateral lugs 12, 13 are substantially rectangular and identical. They are obtained from two horizontal cutting lines 14, 15 and a median vertical cutting line which forms the free edges 16 of the tabs 12, 13, after folding of the tabs 12, 13 by 90 ° laterally outwardly . These free edges 16 will bear against the first vertical face 3 of the rubble 2, and the longitudinal dimension L of the tabs 12, 13 therefore corresponds to the spacing between the bottom wall 9 of the support 6 and said vertical face 3 of the rubble 2.

En outre, dans la paroi de fond 9 et au-dessus des pattes 12, 13 est réalisée une découpe 30 qui forme une languette 18, après repli à 90° vers le haut et à l'opposé des ailes 10, 11, autour d'une ligne de pliage 17 horizontale. Cette languette 18 est sensiblement horizontale et en saillie selon D1 dans le même sens que les pattes 12, 13. La languette 18 comporte une portion sensiblement rectangulaire et horizontale 19 et deux rabats latéraux 20, repliés sensiblement à l'horizontale sous la portion 19, formant ainsi un fourreau qui sert de moyen de réception de l'élément de liaison 7 et de guidage de son déplacement selon D1, comme on le verra plus loin. La languette peut également être pourvue d'un trou 21 traversant d'axe vertical. La dimension longitudinale de la languette 18 est sensiblement égale à la dimension longitudinale L des pattes 12, 13.In addition, in the bottom wall 9 and above the tabs 12, 13 is formed a cutout 30 which forms a tongue 18, after folding upwardly 90 ° and opposite the wings 10, 11, around a horizontal fold line 17. This tongue 18 is substantially horizontal and projecting along D1 in the same direction as the tabs 12, 13. The tongue 18 has a substantially rectangular and horizontal portion 19 and two side flaps 20, folded substantially horizontally under the portion 19, thus forming a sheath which serves as means for receiving the connecting element 7 and guiding its displacement along D1, as will be seen later. The tongue may also be provided with a through hole 21 of vertical axis. The longitudinal dimension of the tongue 18 is substantially equal to the longitudinal dimension L of the tabs 12, 13.

De plus, dans chacune des ailes 10, 11 du support 6 est réalisée une découpe 22 qui, après repli des parties ainsi obtenues, forme un moyen de maintien et/ou de blocage de l'élément de liaison 7.In addition, in each of the flanges 10, 11 of the support 6 is produced a cutout 22 which, after folding of the parts thus obtained, forms a means for holding and / or blocking the connecting element 7.

Chaque découpe 22 permet de former une languette 23 sensiblement rectangulaire, liée à l'aile 10, 11 correspondante par une extrémité formant une ligne de pliage 24 sensiblement horizontale. Dans l'exemple de réalisation représenté, la languette 23 comprend d'une part une oreille 25 à son extrémité libre, et d'autre part une lumière 26 à proximité de la ligne de pliage 24.Each cutout 22 makes it possible to form a substantially rectangular tongue 23 connected to the corresponding flange 10, 11 by one end forming a substantially horizontal fold line 24. In the embodiment shown, the tongue 23 comprises on the one hand an ear 25 at its free end, and on the other hand a light 26 near the fold line 24.

Les lignes de pliage 24 sont ménagées sensiblement à la même hauteur sur les ailes 10, 11, mais les découpes 22 sont réalisées l'une vers le haut et l'autre vers le bas. Ainsi, l'aile 10 comporte une languette 23 qui peut être rabattue à l'horizontale, vers l'intérieur du U, par un pliage de 90° vers le bas, tandis que l'aile 11 comporte une languette 23 qui peut être rabattue à l'horizontale, vers l'intérieur du U, par un pliage de 90° vers le haut. Lorsque les deux languettes 23 sont à l'horizontale, l'une au-dessus de l'autre, elles peuvent être assemblées l'une à l'autre par engagement de l'oreille 25 d'une languette 23 dans la lumière 26 de l'autre languette 23. Cet assemblage n'est pas définitif, et les languettes 23 pourront être ultérieurement séparées. De préférence, lorsqu'elles sont à l'horizontale, les languettes 23 s'étendent pratiquement d'une aile 10, 11 à l'autre.The fold lines 24 are arranged substantially at the same height on the wings 10, 11, but the cutouts 22 are made one upwards and the other down. Thus, the wing 10 comprises a tongue 23 which can be folded horizontally, towards the inside of the U, by folding 90 ° downwards, while the wing 11 comprises a tongue 23 which can be folded down. horizontally, towards the inside of the U, by bending 90 ° upwards. When the two tabs 23 are horizontal, one above the other, they can be joined to one another by engagement of the ear 25 with a tongue 23 in the slot 26 of the other tongue 23. This assembly is not definitive, and the tabs 23 may be subsequently separated. Preferably, when they are horizontal, the tabs 23 extend substantially from one flange 10, 11 to the other.

En outre, comme illustré sur la figure 5, la languette 23 qui sera située au-dessus de l'autre languette comporte, sur sa face inférieure 27, une ou plusieurs nervures 28 en saillie vers le bas et orientées transversalement (selon D2). Cette nervure peut être obtenue par une déformation localisée de la matière (roulage, action d'une presse, etc.).In addition, as illustrated on the figure 5 , the tongue 23 which will be located above the other tongue has, on its lower face 27, one or more ribs 28 projecting downwards and oriented transversely (according to D2). This rib can be obtained by a localized deformation of the material (rolling, action of a press, etc.).

On décrit à présent l'élément de liaison 7 en référence à la figure 3.The link element 7 is now described with reference to the figure 3 .

L'élément de liaison 7 se présente sous la forme d'une tige plate, ce qui permet d'obtenir un très bon appui sur la face supérieure 5 horizontale du moellon 2. Dans la réalisation représentée, on a sur la face supérieure de l'élément de liaison 7 des dents 29 en saillie vers le haut. Toutefois la présence de dents n'est pas indispensable, d'autres moyens de blocage pouvant être envisagés.The connecting element 7 is in the form of a flat rod, which makes it possible to obtain a very good support on the upper horizontal face of the rubble 2. In the embodiment shown, it has on the upper face of the connecting element 7 of the teeth 29 projecting upwards. However, the presence of teeth is not essential, other locking means may be envisaged.

Chaque dent 29 possède une face inclinée formant une rampe 31 et une face droite 32, verticale, formant butée. L'élément de liaison 7 comporte de plus une pluralité d'orifices 42 d'axe vertical.Each tooth 29 has an inclined face forming a ramp 31 and a right face 32, vertical, forming a stop. The connecting element 7 further comprises a plurality of orifices 42 of vertical axis.

Avantageusement, l'élément de liaison 7 peut être réalisé en un matériau appartenant au groupe comprenant : l'acier inoxydable, le laiton, l'aluminium, les composites, les bicomposants acier et composite. On évite ainsi les problèmes de corrosion rencontrés dans l'art antérieur et, dans le cas de l'utilisation au moins partiellement d'un composite, on supprime les ponts thermiques.Advantageously, the connecting element 7 may be made of a material belonging to the group comprising: stainless steel, brass, aluminum, composites, two-component steel and composite. This avoids the corrosion problems encountered in the prior art and, in the case of the use at least partially of a composite, the thermal bridges are eliminated.

La figure 2 illustre un premier mode de réalisation d'un organe de retenue 8, qui est ici une pièce distincte de l'élément de liaison 7.The figure 2 illustrates a first embodiment of a retaining member 8, which here is a separate part of the connecting element 7.

Dans la réalisation représentée, l'organe de retenue 8 est formé d'un profilé en U, placé verticalement lors de son utilisation, ce profilé comportant d'une part une paroi de fond 33 destinée à venir en appui contre la deuxième face verticale 4 du moellon 2 et d'autre part deux ailes latérales 34, 35 s'étendant à l'opposé de ladite face verticale 4. Par découpe dans la paroi de fond 33 et repli à l'horizontale, à 90°, dans le sens des ailes latérales 34, 35, on réalise une patte 36 munie de rabats latéraux 37 repliés sensiblement à l'horizontale par-dessus. On obtient ainsi un fourreau dans lequel l'élément de liaison 7 peut être déplacé longitudinalement, le fourreau guidant ce déplacement. De plus, un trou 38 traversant d'axe vertical, formant un moyen de blocage temporaire de l'élément de liaison 7, est ménagé dans la patte 36. D'autres moyens de blocage peuvent être envisagés.In the embodiment shown, the retaining member 8 is formed of a U-profile, placed vertically during its use, this profile comprising on the one hand a bottom wall 33 intended to bear against the second vertical face 4 of the rubble 2 and secondly two lateral wings 34, 35 extending opposite said vertical face 4. By cutting in the bottom wall 33 and folded horizontally at 90 °, in the direction of side wings 34, 35, a tab 36 is provided with side flaps 37 folded substantially horizontally over it. A sleeve is thus obtained in which the connecting element 7 can be moved longitudinally, the sleeve guiding this displacement. In addition, a through hole 38 of vertical axis, forming a temporary locking means of the connecting element 7, is formed in the tab 36. Other locking means may be envisaged.

Il est à noter que la paroi de fond 33 comporte une encoche 39 au niveau de la découpe formant la patte 36. De la sorte, les rabats 37 repliés se trouvent sensiblement dans le même plan que le bord supérieur 40 de la paroi de fond 33, sans dépasser au-dessus.It should be noted that the bottom wall 33 has a notch 39 at the cutout forming the tab 36. In this way, the flaps 37 folded are substantially in the same plane as the upper edge 40 of the bottom wall 33 , without exceeding above.

On décrit à présent la mise en oeuvre du dispositif de coffrage 1.The implementation of the formwork device 1 is now described.

L'élément de liaison 7 est inséré dans la languette 18 du support 6, puis les languettes 23 sont repliées à l'horizontale, au-dessus et en-dessous de l'élément de liaison 7, et assemblées l'une à l'autre par engagement des oreilles 25 dans les lumières 26, de part et d'autre (selon D2) de l'élément de liaison 7.The connecting element 7 is inserted in the tongue 18 of the support 6, then the tongues 23 are folded horizontally, above and below the connecting element 7, and assembled one to the other. other by engagement of the ears 25 in the lights 26, on both sides (according to D2) of the connecting element 7.

Cet ensemble est associé à l'organe de retenue 8, par insertion de l'élément de liaison 7 dans la patte 36 et introduction d'un clou 41 dans le trou 38 placé en correspondance d'un orifice 42 de l'élément de liaison 7.This assembly is associated with the retaining member 8, by inserting the connecting element 7 into the lug 36 and introducing a nail 41 into the hole 38 placed in correspondence with an orifice 42 of the connecting element 7.

Ensuite, on place l'élément de liaison 7 en appui sur la face supérieure 5 horizontale du moellon 2, avec l'organe de retenue 8 en appui contre la deuxième face verticale 4 du moellon 2.Then, the connecting element 7 is placed in abutment on the horizontal upper face of the rubble 2, with the retaining member 8 bearing against the second vertical face 4 of the rubble 2.

Puis le support 6 est rapproché du moellon jusqu'à ce qu'il vienne en appui serré contre la première face verticale 3 du moellon 2. Ce mouvement est possible car les saillies 28 de la languette 23 se déplacent le long des rampes 31 des dents 29 de l'élément de liaison 7.Then the support 6 is brought closer to the rubble until it comes to bear against the first vertical face 3 of the rubble 2. This movement is possible because the projections 28 of the tongue 23 move along the ramps 31 of the teeth 29 of the connecting element 7.

En position montée (figure 4), le moellon 2 est serré entre, d'une part, la paroi de fond 33 de l'organe de retenue 8 et, d'autre part, le bord libre 16 des pattes latérales 12, 13 du support 6 et les rabats latéraux 20 de la languette 18. On a donc un appui en trois points du support 6 contre la première face verticale 3 du moellon 2, qui garantit le bon positionnement du support 6 par rapport au moellon 2.In mounted position ( figure 4 ), the rubble 2 is clamped between, on the one hand, the bottom wall 33 of the retaining member 8 and, on the other hand, the free edge 16 of the lateral lugs 12, 13 of the support 6 and the lateral flaps 20 of the tongue 18. There is therefore a support at three points of the support 6 against the first vertical face 3 of the rubble 2, which ensures the proper positioning of the support 6 relative to the rubble 2.

L'élément de liaison 7 est bloqué par rapport à l'organe de retenue 8 grâce au clou 41. De plus, il est bloqué par rapport au support 6 par la coopération entre la face verticale 32 des dents 29 de l'élément de liaison 7 et les saillies 28 de la languette 23 qui empêchent l'éloignement du support 6 par rapport au moellon 2 (voir figure 5). Il est possible de prévoir des moyens de blocage supplémentaires de l'élément de liaison 7 par rapport au support 6. A cet effet, on peut introduire un clou dans le trou 21 de la languette 18, placé en correspondance d'un orifice 42 de l'élément de liaison 7.The connecting element 7 is locked with respect to the retaining member 8 by virtue of the nail 41. Moreover, it is locked with respect to the support 6 by the cooperation between the vertical face 32 of the teeth 29 of the connecting element. 7 and the projections 28 of the tongue 23 which prevent the distance of the support 6 from the rubble 2 (see figure 5 ). It is possible to provide additional locking means for the connecting element 7 with respect to the support 6. For this purpose, a nail can be introduced into the hole 21 of the tongue 18, placed in correspondence with an orifice 42 of the connecting element 7.

Eventuellement, une rehausse peut être fixée sur le support 6. Puis une planche de coffrage (non représentée) est placée en appui sur la languette 18, contre la paroi de fond 9 du support 6, en étant fixée, par exemple par des clous insérés dans des trous 46 ménagés dans la paroi de fond 9. L'épaisseur de la planche correspond à la distance L, pour que la planche soit placée dans la continuité de la première face verticale 3 du moellon 2. On peut alors procéder à la coulée du béton.Optionally, a riser may be fixed on the support 6. Then a shuttering board (not shown) is placed in abutment on the tongue 18, against the bottom wall 9 of the support 6, being fixed, for example by inserted nails in the holes 46 formed in the bottom wall 9. The thickness of the board corresponds to the distance L, so that the board is placed in the continuity of the first vertical face 3 of the rubble 2. It is then possible to proceed with the casting concrete.

Lorsque le béton a durci, on retire la planche de coffrage ainsi que les clous de blocage, et on sépare les languettes 23 du support 6. On peut ainsi dégager par coulissement par rapport à l'élément de liaison 7 d'une part le support 6 et d'autre part l'organe de retenue 8, qui pourront donc être réutilisés. L'élément de liaison 7 reste pris dans le béton et doit être coupé. La découpe peut être faite à l'aide d'un outil (scie) ou à la main si l'élément de liaison 7 comporte une zone de moindre résistance (existant naturellement entre deux dents 29 ou spécifiquement prévue).When the concrete has hardened, the shuttering board and the locking nails are removed, and the tongues 23 are separated from the support 6. It is thus possible to slide out relative to the connecting element 7 on the one hand the support 6 and on the other hand the retaining member 8, which can be reused. The connecting element 7 remains in the concrete and must be cut. The cutting can be done using a tool (saw) or by hand if the connecting element 7 has a zone of least resistance (existing naturally between two teeth 29 or specifically provided).

La figure 6 illustre un deuxième mode de réalisation de l'élément de liaison 7. Celui-ci est réalisé d'une seule pièce avec l'organe de retenue 8 qui se présente par exemple sous la forme d'une tige courbée en S permettant l'appui sur la deuxième face verticale 4 du moellon 2. Une zone de moindre résistance 43 est ménagée à la jonction entre l'organe de retenue 8 et l'élément de liaison 7. Pour le reste, le dispositif de coffrage 1 est inchangé.The figure 6 illustrates a second embodiment of the connecting element 7. This is made in one piece with the retaining member 8 which is for example in the form of a curved rod S supporting the support on the second vertical face 4 of the rubble 2. An area of weakness 43 is formed at the junction between the retaining member 8 and the connecting element 7. For the rest, the formwork device 1 is unchanged.

Après durcissement du béton, on peut là encore récupérer le support 6 en le faisant coulisser par rapport à l'élément de liaison 7. Par contre l'organe de retenue 8, formant une seule pièce avec l'élément de liaison 7, ne pourra pas être réutilisé. Par simple rupture au niveau de la zone de moindre résistance 43, on peut séparer l'élément de liaison 7 et l'organe de retenue 8 afin qu'aucun élément ne dépasse du moellon 2. A cet effet, il est possible de faire levier avec un outil, tel qu'un tournevis, introduit dans l'espace 44 prévu entre la partie inférieure de l'organe de retenue 8 et le moellon 2. Une autre zone de moindre résistance 47 peut également être prévue au droit de la première face verticale 3 du moellon 2.After hardening of the concrete, it is again possible to recover the support 6 by sliding it relative to the connecting element 7. On the other hand, the retaining member 8, forming a single piece with the connecting element 7, can not not be reused. By simply breaking at the level of the zone of least resistance 43, it is possible to separate the connecting element 7 and the retaining member 8 so that no element extends beyond the rubble 2. For this purpose, it is possible to leverage with a tool, such as a screwdriver, introduced into the space 44 provided between the lower part of the retaining member 8 and the rubble 2. Another area of least resistance 47 may also be provided at the right of the first face vertical 3 of the rubble 2.

A la place d'un clou, on peut utiliser un coin 45, comme illustré sur la figure 7, qui vient se placer dans un orifice de section correspondante rectangulaire ou carrée, ménagé dans l'élément de liaison 7 et la languette 18 et/ou la patte 36.Instead of a nail, it is possible to use a wedge 45, as illustrated on the figure 7 , which is placed in a hole of corresponding section rectangular or square, formed in the connecting element 7 and the tongue 18 and / or the tab 36.

Un autre mode de réalisation du support 6 est illustré sur la figure 8, ce support ayant la même orientation que celui illustré sur la figure 1.Another embodiment of the support 6 is illustrated on the figure 8 , this support having the same orientation as that illustrated on the figure 1 .

Ce support 6 est constitué d'un profilé en U possédant généralement la même structure que le support de la figure 1, à savoir une paroi de fond 9 et deux ailes latérales 10, 11, et qui présente les différences suivantes.This support 6 consists of a U-shaped section generally having the same structure as the support of the figure 1 , namely a bottom wall 9 and two lateral wings 10, 11, and which has the following differences.

Tout d'abord, les deux pattes latérales 12, 13 sont obtenues à partir de deux lignes horizontales de découpe 14, 15 et de deux lignes verticales de découpe distinctes 50, 51 qui forment les bords libres 16 de ces pattes 12, 13, après repli. Ainsi, pour un même support 6, possédant une paroi de fond 9 de largeur (selon D2) donnée 2L, on peut obtenir des pattes 12, 13 ayant une longueur maximale de L (cas de la figure 1) ou une longueur L' inférieure à L. On peut ainsi avoir une gamme de supports 6 pouvant s'adapter à différentes épaisseurs de planches de coffrage.Firstly, the two lateral tabs 12, 13 are obtained from two horizontal cutting lines 14, 15 and two distinct vertical cutting lines 50, 51 which form the free edges 16 of these tabs 12, 13, after downturn. Thus, for the same support 6, having a bottom wall 9 of width (according to D2) given 2L, it is possible to obtain tabs 12, 13 having a maximum length of L (case of the figure 1 ) or a length L 'less than L. It is thus possible to have a range of supports 6 that can adapt to different thicknesses of formwork boards.

De plus, les ailes 10, 11 du support 6 ne comportent pas de découpes, et on ne retrouve donc pas les languettes 23.In addition, the wings 10, 11 of the support 6 do not have cutouts, and therefore the tabs 23 are not found.

En outre, on n'a pas de languette 18. Dans ce mode de réalisation, les moyens de réception et de guidage de l'élément de liaison 7 comprennent une pièce en U 52 distincte du profilé en U et rapportée sur celui-ci. Cette pièce en U 52 comprend deux branches 53, 54 sensiblement horizontales et une base 55 arrondie. La première branche 53 possède une extrémité libre 56 fixée sur la paroi de fond 9 du profilé en U, par exemple par soudage, et s'étend jusqu'à la base 55 dans le même sens que les ailes latérales 10, 11 du profilé en U. La deuxième branche 54 est plus longue (dimension selon D1) que la première ; elle s'étend depuis la base 55 en direction du moellon 2 et passe à travers une fente 56 ménagée dans la paroi de fond 9 du profilé en U. L'extrémité libre 57 de la deuxième branche 54 est située en retrait par rapport aux bords libres 16 des pattes 12, 13, c'est-à-dire que la deuxième branche 54 ne sera pas en contact avec le moellon en position montée.In addition, there is no tab 18. In this embodiment, the receiving means and guide the connecting element 7 comprise a U-shaped part 52 separate from the U-shaped section and attached thereto. This U-shaped piece 52 comprises two substantially horizontal branches 53, 54 and a rounded base 55. The first branch 53 has a free end 56 fixed to the bottom wall 9 of the U-profile, for example by welding, and extends to the base 55 in the same direction as the lateral wings 10, 11 of the profile. U. The second branch 54 is longer (dimension according to D1) than the first; it extends from the base 55 towards the rubble 2 and passes through a slot 56 formed in the bottom wall 9 of the U-shaped section. The free end 57 of the second leg 54 is set back from the edges free 16 tabs 12, 13, that is to say that the second branch 54 will not be in contact with the rubble in mounted position.

En outre, on a une première lumière horizontale 58 ménagée dans la base 55 et une seconde lumière horizontale 59 ménagée dans la paroi de fond 9, au-dessus de la fente 56 et formant une ouverture unique avec elle. Les deux lumières 58, 59 sont situées dans l'alignement l'une de l'autre selon D1 et sont destinées à recevoir l'élément de liaison 7 et à guider son coulissement.In addition, there is a first horizontal lumen 58 formed in the base 55 and a second horizontal lumen 59 formed in the bottom wall 9, above the slot 56 and forming a single opening therewith. The two lights 58, 59 are located in alignment with one another according to D1 and are intended to receive the connecting element 7 and guide its sliding.

Les branches 53, 54 de la pièce en U 52 possède des orifices 60 en correspondance destinés à recevoir un clou (par exemple) pour le blocage de l'élément de liaison 7.The branches 53, 54 of the U-shaped part 52 have corresponding orifices 60 for receiving a nail (for example) for blocking the connecting element 7.

Par ailleurs, dans la paroi de fond 9 et au-dessous des pattes 12, 13 est réalisée une découpe 61 qui forme une patte 62, après repli à 90° vers le bas et à l'opposé des ailes 10, 11, autour d'une ligne de pliage 63 horizontale. Cette patte 62 est sensiblement horizontale et en saillie selon D1 dans le même sens que les pattes 12, 13 ; elle possède une dimension longitudinale sensiblement égale à la dimension longitudinale L' des pattes 12, 13, et forme ainsi un troisième appui contre le moellon 2, en position montée. Il est possible de prévoir que la dimension longitudinale de la patte 62 soit de 1 à 2 mm plus grande que L'. Ceci permet d'assurer la verticalité du support 6 après la poussée du béton qui s'exerce sur la planche de coffrage et tend à faire légèrement basculer le support 6.Furthermore, in the bottom wall 9 and below the tabs 12, 13 is formed a cutout 61 which forms a tab 62, after folding 90 ° downwards and opposite the wings 10, 11, around a horizontal folding line 63. This tab 62 is substantially horizontal and projecting along D1 in the same direction as the tabs 12, 13; it has a longitudinal dimension substantially equal to the longitudinal dimension L 'of the tabs 12, 13, and thus forms a third support against the rubble 2, in the mounted position. It is possible to provide that the longitudinal dimension of the tab 62 is 1 to 2 mm larger than L '. This makes it possible to ensure the verticality of the support 6 after the thrust of the concrete which is exerted on the shuttering board and tends to slightly tilt the support 6.

Le profilé en U 6 comporte en outre une fente 64 sensiblement horizontale pratiquée dans sa paroi de fond 9, sous la ligne de pliage 63 et à proximité d'une extrémité de ladite paroi de fond 9. Le rôle de cette fente 64 sera expliqué plus loin.The U-profile 6 further comprises a substantially horizontal slot 64 formed in its bottom wall 9, under the fold line 63 and near an end of said bottom wall 9. The role of this slot 64 will be explained more far.

Enfin, le profilé en U 6 comporte des orifices 65 ménagés dans les ailes 10, 11, en vis-à-vis, pour permettre la fixation d'une rehausse, comme on le verra plus loin.Finally, the U-shaped section 6 has orifices 65 formed in the wings 10, 11, vis-à-vis, to allow the attachment of a riser, as will be seen later.

Le support 6 qui vient d'être décrit peut être utilisé dans la position qu'il occupe sur la figure 8, de façon similaire à la disposition illustrée sur la figure 4. Dans cette position d'utilisation, les pattes 12, 13, 62 sont en appui contre la première face verticale 3 du moellon 2. L'élément de liaison 7 est inséré dans les lumières 58, 59, et se situe donc au-dessus de la deuxième branche 54 de la pièce en U 52. La planche de coffrage repose donc directement sur l'élément de liaison 7. L'avantage correspondant est qu'on n'a pas de surépaisseur de matière entre cet élément de liaison 7 et la planche.The support 6 which has just been described can be used in the position it occupies on the figure 8 , similar to the layout shown on the figure 4 . In this position of use, the tabs 12, 13, 62 bear against the first vertical face 3 of the rubble 2. The connecting element 7 is inserted in the slots 58, 59, and is thus above the second branch 54 of the U-shaped part 52. The formwork board therefore rests directly on the connecting element 7. The corresponding advantage is that there is no extra material thickness between this connecting element 7 and the board.

Ce support 6 peut également être utilisé en position « retournée », comme illustré sur la figure 9, en particulier lorsqu'il s'agit de réaliser un coffrage sous un plafond. Dans cette configuration, l'élément de liaison n'est pas inséré dans les lumières 58, 59 mais dans la fente 64. Cet élément de liaison est avantageusement pourvue d'une partie extrême coudée qui sert d'organe de retenue 8. Le support 6 est toujours en contact avec le moellon 2 par les extrémités libres des pattes 12, 13, 62.This support 6 can also be used in the "upside-down" position, as illustrated in FIG. figure 9 , especially when it comes to formwork under a ceiling. In this configuration, the connecting element is not inserted in the slots 58, 59 but in the slot 64. This connecting element is advantageously provided with a bent end portion which serves as a retaining member 8. The support 6 is always in contact with the rubble 2 by the free ends of the tabs 12, 13, 62.

Sur la figure 10 est représenté un profilé additionnel 66 qui a une forme de U possédant une paroi de fond 67 et deux ailes latérales 68, 69. Le profilé additionnel 66 comprend en outre deux pattes 70, 71 faisant saillie de la paroi de fond 67 à l'opposé et dans le prolongement des ailes latérales 68, 69, à une extrémité de la paroi de fond 67. En outre, la paroi de fond 67 de ce profilé additionnel 66 comporte des trous 72 pour la fixation, par exemple par des clous, d'une planche de coffrage. Et les ailes latérales 68, 69 comportent des orifices 73, en vis-à-vis.On the figure 10 there is shown an additional profile 66 which is U-shaped having a bottom wall 67 and two side wings 68, 69. The additional section 66 further comprises two tabs 70, 71 projecting from the bottom wall 67 in the opposite direction and in the extension of the lateral wings 68, 69, at one end of the bottom wall 67. In addition, the bottom wall 67 of this additional profile 66 has holes 72 for fastening, for example by nails, of a formwork board. And the side wings 68, 69 have orifices 73, facing each other.

Le profilé additionnel 66 joue un rôle de rehausse, comme on le voit sur la figure 11. Ses dimensions sont telles qu'il peut être inséré dans le profilé en U formant le support 6.The additional section 66 plays a role of enhancement, as seen on the figure 11 . Its dimensions are such that it can be inserted into the U-shaped profile forming the support 6.

On a d'une part un premier profilé additionnel 66 monté au-dessus de la pièce en U 52 dans un premier sens, avec les pattes 70, 71 dirigées dans le même sens que les ailes 10, 11, la paroi de fond 67 du profilé additionnel 66 étant ainsi à distance de la paroi de fond 9 du support 6. On a d'autre part un second profilé additionnel 66 - identique - monté au-dessous des pattes 12, 13 dans un deuxième sens, avec les pattes 70, 71 dirigées dans le même sens que les pattes 12, 13, la paroi de fond 67 du profilé additionnel 66 étant ainsi contre la paroi de fond 9 du support 6.On the one hand there is a first additional profile 66 mounted above the U-shaped piece 52 in a first direction, with the tabs 70, 71 directed in the same direction as the flanges 10, 11, the bottom wall 67 of the additional section 66 being thus remote from the bottom wall 9 of the support 6. On the other hand, there is a second additional profile 66 - identical - mounted below the tabs 12, 13 in a second direction, with the tabs 70, 71 directed in the same direction as the tabs 12, 13, the bottom wall 67 of the additional section 66 thus being against the bottom wall 9 of the support 6.

Les profilés additionnels 66 sont fixés au support 6 de façon amovible au moyen d'organes tels que des clavettes (non représentés) insérés transversalement dans les orifices 65, 73 placés en correspondance.The additional profiles 66 are attached to the support 6 removably by means of members such as keys (not shown) inserted transversely into the orifices 65, 73 placed in correspondence.

Avec l'ensemble illustré sur la figure 11, on peut réaliser des coffrages de plus grande hauteur (grâce au premier profilé additionnel 66) tout en assurant le maintien contre le moellon 2 et la reprise d'effort (grâce au deuxième profilé additionnel 66).With the set illustrated on the figure 11 , it is possible to realize formwork of greater height (thanks to the first additional profile 66) while ensuring the maintenance against the rubble 2 and the recovery of effort (thanks to the second additional profile 66).

Il va de soi que l'invention n'est pas limitée aux modes de réalisation décrits ci-dessus à titre d'exemples mais qu'elle en embrasse au contraire toutes les variantes de réalisation.It goes without saying that the invention is not limited to the embodiments described above as examples but that it encompasses all variants.

Claims (14)

  1. A device intended to be placed on an ashlar (2) so as to produce a formwork for a binder such as concrete, the device (1) on the one hand comprising a support (6) for a plank lining, intended to be placed against a first vertical surface (3) of the ashlar, and on the other hand means for maintaining the support (6) against the ashlar, said maintenance means including:
    - a connecting element (7) intended to rest substantially longitudinally on the upper surface (5) of the ashlar, said connecting element (7) being, in its first end portion, connected to the support (6) with the possibility of longitudinal movement, and, at its second end portion, connected to a retaining member (8) capable of cooperating with a second vertical surface (4) of the ashlar, opposite the first vertical surface (3); and
    - means (28, 29, 21, 42) for temporarily blocking the connecting element (7) relative to the support (6) in the appropriate longitudinal direction making it possible to grip the ashlar (2) between the support (6) and the retaining member (8);
    characterized in that the support (6) comprises a U-shaped profile having a bottom wall (9) and two side wings (10, 11) which, in the in-use position, extend opposite the ashlar while the bottom wall (9) is positioned substantially vertically and parallel to the first vertical surface (3) of the ashlar, said profile having:
    - three lugs (12, 13, 18, 62) protruding from the bottom wall (9) substantially longitudinally and whereof the free edge (16) is provided to come into contact with the first vertical surface (3) of the ashlar, said three lugs having substantially the same longitudinal dimension (L, L'), said longitudinal dimension (L, L') defining the spacing between the first vertical surface (3) of the ashlar (2) and the bottom wall (9) of the U and corresponding to the thickness of the plank lining intended to be placed against the bottom wall (9);
    - means (18, 19, 20) for receiving and guiding the longitudinal movement of the connecting element (7), protruding from the bottom wall (9) substantially longitudinally and also forming a bearing means for the plank lining.
  2. The device according to claim 1, characterized in that the blocking means comprise at least one protrusion (29) formed on the connecting element (7), capable of cooperating with a protrusion (28) formed on the support (6) so as to prevent untimely longitudinal movement of the connecting element (7) relative to the support (6).
  3. The device according to claim 1 or 2, characterized in that the blocking means comprise at least one opening (42) formed in the connecting element (7) and at least one opening (21) formed in the support (6), an assembly member such as a nail (41) or a chock (45) that can be inserted into the two openings placed in connection.
  4. The device according to one of claims 1 to 3, characterized in that the connecting element (7) assumes the form of a flat rod comprising teeth (29) protruding on its upper surface, the teeth having an inclined surface forming a ramp (31) and a straight surface forming a stop (32) and capable of cooperating with a protrusion (28) formed on the support (6), so as to prevent the longitudinal movement of the connecting element (7) relative to the support (6) in one direction and allow it in the opposite direction.
  5. The device according to one of claims 1 to 4, characterized in that the support (6) includes two tabs (23) formed by a cutout in the opposite wings of the U, the tabs (23) being arranged to be able to be folded substantially at the horizontal toward the inside of the U, one above the other, on either side of the connecting element (7).
  6. The device according to claims 4 and 5, characterized in that the tab (23) positioned above the connecting element (7) includes at least one rib (28) protruding downwardly and extending transversely, said rib (28) being able to cooperate with a tooth (29) of the connecting element (7) to block the longitudinal movement of said connecting element (7).
  7. The device according to claim 5 or 6, characterized in that the tabs (23) comprise reversible mutual assembly means (25, 26).
  8. The device according to one of claims 1 to 7, characterized in that the means for receiving and guiding the connecting element (7) comprise a tab (18) cut into the bottom wall (9) of the U and folded substantially horizontally, said tab (18) including two side flaps (20) folded substantially at the horizontal so as to form a sheath.
  9. The device according to one of claims 1 to 7, characterized in that the means for receiving and guiding the connecting element (7) comprise a U-shaped piece (52) attached on the U-shaped profile, said U-shaped piece (52) comprising:
    - a first branch (53) that has a free end (56) fastened on the bottom wall (9) of the U-shaped profile and which extends substantially horizontally in the same direction as the side wings (10, 11);
    - a base (55) provided with a first horizontal lumen (58) in which the connecting element (7) can slide;
    - a second branch (54) longer than the first, which extends from the base (55) substantially horizontally and passes through a slit (56) formed in the bottom wall (9) of the U-shaped profile, said slit (56) being topped by a second horizontal lumen (59) that is aligned with the first horizontal lumen (58) and in which the connecting element (7) can slide.
  10. The device according to one of claims 1 to 9, characterized in that the retaining member (8) is made in a single piece with the connecting element (7), an area of lower resistance (43) being formed at the junction between the retaining member (8) and the connecting element (7).
  11. The device according to one of claims 1 to 9, characterized in that the retaining member (8) is a separate piece from the connecting element (7), which comprises means (36) allowing the longitudinal movement of the connecting element (7) and means (38) for temporarily blocking the connecting element (7) relative to the retaining member (8) in the appropriate longitudinal direction.
  12. The device according to one of claims 1 to 10, characterized in that the connecting element (7) is made from a material belonging to the group made up of: stainless steel, brass, aluminum, composites, steel and composite dual components.
  13. The device according to one of claims 1 to 12, characterized in that the U-shaped profile (6) also includes a substantially horizontal slit (64) formed in the bottom wall (9) thereof, near one end of the said bottom wall (9), in which the connecting element (7) can slide.
  14. A formwork assembly, characterized in that it comprises a device (1) according to one of the preceding claims and an additional profile (66), said additional profile being in the shape of a U having a bottom wall (67) and two side wings (68, 69), and also comprising two lugs (70, 71) protruding from the bottom wall (67) opposite and in the extension of the side wings (68, 69), said additional profile (66) being capable of being inserted and fastened removably in the U-shaped profile of the support (6), respectively in the upper portion thereof in a first direction or in the lower portion thereof in a second direction, so as to make it possible to produce a higher formwork.
EP20090156678 2008-07-11 2009-03-30 Formwork device Not-in-force EP2143856B8 (en)

Applications Claiming Priority (1)

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FR0803989A FR2933723B1 (en) 2008-07-11 2008-07-11 FORMING DEVICE

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EP2143856A1 EP2143856A1 (en) 2010-01-13
EP2143856B1 true EP2143856B1 (en) 2012-08-01
EP2143856B8 EP2143856B8 (en) 2012-09-05

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FR3011865B1 (en) * 2013-10-14 2015-12-11 Bc Consulting EQUIPMENT FOR POSITIONING A SLAB FORMWORK ON A BUILDING WALL SUCH AS A WALL
FR3100830A1 (en) 2019-09-16 2021-03-19 Batiroc Protect Sas Console device intended to support a protective assembly on the concrete slab on the perimeter of the structure.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9401417U1 (en) * 1994-01-28 1994-05-19 Hummel Heinz Formwork board holder made of plastic
DE4428412A1 (en) * 1994-08-11 1996-02-15 Reinhold Beck Bracket with holders for shuttering panels
DE20022464U1 (en) * 1999-11-23 2001-09-06 Kuder Karlheinz Auxiliary device for holding edge insulation
FR2863637B1 (en) * 2003-12-16 2008-05-02 Marc Olivier DEVICE FOR SUPPORTING A FORMWORK FOR PRODUCING FLOORS
FR2893058B1 (en) * 2005-11-09 2008-02-15 Service Entretien Batiment DEVICE FOR FACILITATING QUICK FORMWORK AND MOUNTING WALLS, SLABS, FLOORS AND THE LIKE

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Publication number Publication date
EP2143856B8 (en) 2012-09-05
EP2143856A1 (en) 2010-01-13
FR2933723B1 (en) 2010-08-13
FR2933723A1 (en) 2010-01-15

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