FR3077591A1 - CANNING BOX KIT AND USE OF A MAGNIFYING BAND FOR PASSING BOX - Google Patents

Abstract

The invention relates to a standby box kit comprising: - at least one standby box (1) comprising at least one standby box body (2), said body (2) comprising at least one generally non-metallic portion and comprising at least one open internal volume delimited by at least one bottom (2a) and two side walls (2b), said open internal volume being shaped to accommodate at least partially at least one connecting reinforcement at least one holding tool (6) configured to hold the holding box (1) on a formwork, said holding tool (6) being intended to be positioned on the body (2) of the box standby (1) characterized in that the holding tool (6) is a flexible magnetic strip.

Description

The present invention relates to the technical field of accessories used in the construction of works using a poured construction material regardless of where the material is poured: on site or partially in the factory, etc., for example poured concrete. More particularly, the present invention relates to the holding boxes used in the recovery of at least one and preferably two concrete elements, for example two concrete walls.

Conventionally, a holding box comprises a plurality of steel connecting frames, a first part called the bottom comprising a bottom wall and two side walls each delimiting a receiving space, a second part called the cover disposed opposite the bottom wall and at least partially closing the first part of the standby box. The connecting reinforcements are made of steel and each generally comprises a loop and two strands, the strands being arranged in the bottom receiving space and extending in a first direction and the loops extending in a second direction intersecting the first direction, projecting from the second part of the standby box. Thus, when concrete elements are formed on the standby box, to link the first element to the second, it is necessary to unfold the strands so that the latter join the two concrete elements together. In specific cases, the reinforcements of connections can be with a strand, a loop or with two strands without loop, or carried out in cable or other.

To place these holding boxes, it is known to use a holding tool, preferably magnetized such as a magnetic rule which is just put in place in the waiting box and then the box is positioned. put on hold on a formwork by magnetization. Specifically, in the case of metallic queuing boxes, either the formwork or the queuing box or both are equipped with holding tools of the ruler or magnetic strip type allowing the assembly of the formwork / box queued via the holding tool. There are one-piece hold boxes with a magnetic ruler insertion space at the bottom of the hold box.

In the present application, the term "formwork" means any form of wood, metal or any other material, serving as a mold for concrete, said formwork can also be called a formwork, pouring table, prefabrication bench, etc.

The use of magnetic rulers is however quite dangerous in particular by the fact that the magnetization of said magnetic ruler is quite powerful and during the installation / removal and manipulation of such rulers, there is a significant risk of pinching or other injuries. more serious, for example the severing of limbs, cuts, etc. caused by the strong magnetization, the rigidity, the massiveness and the cutting edge of the magnetic rule. The principle of magnetization of the rule implies that the latter is attracted from a great distance by the support or by another rule or all that is ferrous. The rule continuously approaches the element which attracts it, accelerating until contact which is generally violent and very rapid.

The invention aims to remedy all or part of the aforementioned drawbacks and in particular to allow the magnetization of the standby box in a secure and simple manner.

To this end, the subject of the invention is a standby box kit comprising:

- At least one standby box comprising at least one standby box body, said body being generally non-metallic and comprising at least one open internal volume delimited by at least one bottom and two side walls, said open internal volume being shaped to at least partially house at least one connecting frame,

- At least one magnetic holding tool configured to keep the standby box on a formwork, said magnetic holding tool being intended to be positioned on the body of the standby box characterized in that the holding tool is a flexible magnetic strip.

The invention allows the use of a manipulative holding tool of the strip type which is easy to manipulate and without risk due to its flexibility and its small thickness. In addition, the thinness of the magnetic strips makes it possible to distribute the magnetization over a larger surface and as the magnetization surface is increased, the magnetization is optimized. Advantageously, thanks to its flexibility, the magnetic strip is less subject to irreversible deformations or breaks due to improper handling, falls or shocks compared to a magnetic rule. Flexible magnetic strips also have the advantage of not slamming when they are placed on the formwork and / or between them during storage contrary to the magnetic rules, which avoids the risk of injury to the operator.

In the present invention, the term “flexible magnetic strip” means a magnetic strip having a determined magnetization, said strip being able to twist, to roll on itself without plastic deformation. Such a flexible magnetic strip can be produced, for example, from magnetic elastomer.

Thus, the term flexible can be understood as “elastically deformable” preferably under the application of a determined force.

Advantageously, the magnetic strip can comprise isotropic or anisotropic ferrite for example. Preferably, the elastomer used is a natural or synthetic magnetic rubber or adhesive or having a vinyl side. In addition, the magnetization can be axial, or multipolar on each side of the strip or bipolar on each side of the strip.

According to a characteristic of the invention, the holding tool is quadrangular and preferably rectangular.

According to one embodiment of the invention, the holding tool has a thickness of substantially 3 millimeters +/- 0.15 millimeters.

According to a characteristic of the invention, the body of the standby box comprises at least one shaped location to at least partially receive the holding tool or at least one shaped housing to at least partially accommodate said holding tool.

In the present invention, the term "location" means an area which is not structurally delimited, on which the holding tool is in contact or in contact.

According to a characteristic of the invention, the housing is preferably formed on the bottom of the body in the open internal volume or outside the open internal volume.

According to a characteristic of the invention, the body of the box comprises a central portion formed between the side walls of the body. In the present invention, the term "central" is not understood in the mathematical and geometric sense which would imply strict rigor, but rather in the sense that the central portion occupies an intermediate position between the two side walls of the box body .

According to a characteristic of the invention, the body of the standby box comprises two open reception channels configured to each receive at least one strand of connecting frame, said channels being arranged on either side of the central portion , each channel being formed of at least one side wall of the standby box body.

According to a characteristic of the invention, the housing or the location is formed at least in part at the level of the central portion.

According to a characteristic of the invention, the central portion forms a single housing dimensioned only for housing a magnetic strip.

According to a characteristic of the invention, the standby box comprises a magnetization reinforcement accessory intended to be arranged on the body of the standby box.

According to a characteristic of the invention, the reinforcement accessory is positioned in the housing or on the location and preferably between the body of the standby box and the holding tool.

According to a characteristic of the invention, the accessory can be a polar mass, for example a sheet. Advantageously, the accessory makes it possible to orient the magnetic field of the holding tool, which strengthens the magnetization of said holding tool and makes it possible to dispense with the use of a generally metallic waiting box.

According to a characteristic of the invention, the body of the standby box is a profile which mainly extends along a longitudinal axis X-X.

According to a characteristic of the invention, the body of the standby box is non-metallic and is for example made of plastic or wood or concrete or the like.

According to a characteristic of the invention, the standby box comprises a film covering at least partially the body of the standby box or covering the entire body. Thus, only the loops of the connection reinforcements are outside said film so that the standby box is sealed against any possible penetration of concrete during successive concrete pourings. In addition, the film makes it possible to hold the holding tool or tools in the housing or on the location of the body. In addition, the film makes it possible to maintain the connecting armature strands in the channels of the body of the standby box.

According to a characteristic of the invention, the film is heat-shrinkable.

According to one embodiment of the invention, the film can be made of plastic.

According to a characteristic of the invention, the term "made of plastic" means a material made from one or more polymers of synthetic origin and / or of natural origin of the biodegradable and / or bio-based type.

According to a characteristic of the invention, the standby box has a trapezoidal cross section.

According to a characteristic of the invention, each reception channel is delimited by a part of the bottom of the body of the standby box, on which the strands of connecting frames are intended to rest.

Advantageously, each open reception channel allows a simplification of the manufacturing process of the standby box and a technical feasibility that a closed profile cannot allow.

According to a characteristic of the invention, each reception channel is formed on a first side by a side wall of the body and on the second side by a wall of the central portion, the first side being arranged opposite the second side. According to a characteristic of the invention, the first side and the second side each extend in secant relation to the bottom of the body of the standby box. Advantageously, the film makes it possible to flatten the first side of each channel towards the central portion in order to prevent it from deviating during the insertion of the connection fittings in the standby box.

Advantageously, the first side of each channel or of at least one of the channels comprises a folded rim oriented towards the second side of the channel and the central portion so as to restrict the opening of the or each channel. Restricting the opening of the channel by the folded rim makes it possible to strengthen the tightness of the standby box and also to form a support for the film intended to cover the body of the standby box.

According to a characteristic of the invention, the central portion of the body comprises at least one extension extending from the central portion towards a side wall of the body, said at least one extension being preferably breakable. Advantageously, the extension of the central wall has the function of limiting the possible penetration of concrete during the pouring of the walls into the holding box. Preferably, the central portion includes two extensions each arranged opposite a side wall of the body of the standby box. According to a characteristic of the invention, the extension or extensions are breakable. The breakability of the extensions makes it possible, if necessary, to enlarge the opening of the passage of the strands of connecting reinforcements to adapt to the different dimensions of the connecting reinforcements.

According to a characteristic of the invention, each side wall of the body corresponding to the respective first sides of each channel is plastically or elastically deformable under the effect of a concrete pouring pressure, which generates the formation of undulations under the 'effect of concrete pouring, reinforcing the mechanical strength of the hold box, particularly in shear.

According to a characteristic of the invention, the housing is dimensioned so as to accommodate both a magnetic rule, and one or more flexible magnetic strips.

According to a characteristic of the invention, the housing comprises a first part arranged at the bottom of the body of the standby box. Preferably, the first housing part is shaped to receive at least one flexible magnetic strip or even more preferably two flexible magnetic strips arranged side by side laterally.

According to a characteristic of the invention, the housing comprises a second part arranged in the central portion and surmounting the first housing part. Preferably, the second housing part is shaped to receive a holding tool such as a magnetic rule.

Preferably, the first housing part can extend at least partially under each channel.

According to a characteristic of the invention, the first housing part and the second housing part are contiguous and the second housing part opening into the first housing part.

According to a characteristic of the invention, the kit comprises at least two holding tools, for example flexible magnetic strips, positioned one next to the other laterally in the housing.

According to a characteristic of the invention, the body of the box comprises at least one foot arranged on a part of the bottom of said body.

Preferably, the stand-by box body comprises two feet each arranged under a channel of the body, preferably the housing and even more preferably the first part of the housing is arranged between said two feet. Advantageously, the feet make it possible to limit the passage of milt between the panel and the standby box which fight in the same way against tilting: the standby box being used vertically with respect to the ground.

According to a characteristic of the invention, the standby box comprises one or more breakable or foldable tabs arranged in the housing which are configured to at least partially delimit the first housing part. Preferably, the tab or tabs are configured to separate the first housing part from the second housing part. Thus, the second housing part is no longer functional and only one or more magnetic strip type holding tools can be used. In addition, these breakable or foldable tabs make it possible to hold the holding tools in the first part of the housing to prevent them from becoming lodged in the second part of the housing.

Alternatively, the standby box comprises one or more foldable tabs, arranged in the housing and configured to be movable between at least two positions: a first position known as the deployment position at least partially closing the housing so that only a tool for magnetic strip holding can be used; and a second position called the folded position in which the tab or tabs are folded in the housing allowing the insertion of a holding tool of the magnetic rule type.

Advantageously, in the first position only the first housing part is accessible and usable while in the second position, the second housing part is accessible and usable also.

According to a characteristic of the invention, the breakable or foldable tab or tabs are positioned between the first housing part and the second housing part.

According to a characteristic of the invention, the box comprises two breakable tongues each extending from the central portion in the housing.

According to a characteristic of the invention, the standby box comprises a single removable or permanent tongue, the single tongue extending from a side wall of the central portion as far as the opposite side wall of the central portion. Advantageously, the single tab completely separates the first part of the housing from the second housing part.

Advantageously, the present invention also relates to the use of at least one flexible magnetic strip for maintaining a standby box on a formwork, said standby box comprising at least one body of placing box. hold, said body comprising at least one generally non-metallic portion and having at least one open internal volume delimited by at least one bottom and two side walls, said open internal volume being shaped to at least partially house at least one connecting frame, said flexible magnetic strip being positioned on the body of the standby box and preferably on the bottom of the body of the standby box.

The invention will be better understood from the following description, which relates to embodiments according to the present invention, given by way of nonlimiting examples and explained with reference to the appended schematic figures. The attached schematic figures are listed below:

Figure 1 is a partial perspective view of a standby box according to a first embodiment, Figure 2 is a front view of a standby box according to a second embodiment, having flanges folded, and illustrating a first possible configuration of the standby box, FIG. 3 is a partial perspective view of the standby box illustrated in FIG. 2, FIG. 4 is a partial detail view of the standby box illustrated in FIG. 1 or in FIG. 2, FIG. 5 is a front view of a second possible configuration of the standby box according to the second embodiment, FIG. 6 is a front view of a third possible configuration of the standby box according to the second embodiment, Figure 7 is a front view of the standby box according to the invention according to a first variant of the second embodiment, Figure 8 is u a front view of the standby box according to a second variant of the second embodiment according to a first configuration, FIG. 9 is a front view of the standby box according to the second variant of the second embodiment according to a second configuration , Figure 10 is a schematic view of the work produced via the standby box whatever the embodiment of the standby box, Figure 11 is a partial perspective view of the standby box during of concrete pouring according to the first embodiment but applicable regardless of the embodiment of the standby box, FIG. 12 is a partial top view of FIG. 11, FIG. 13 is a front view of a standby box according to a third embodiment, Figure 14 is a front view of a standby box according to a fourth embodiment, and, Figure 15 is a view ace of a standby box according to a fifth embodiment, Figure 16 is a perspective view of a standby box according to a sixth embodiment.

Whatever the embodiment of the standby box 1 and as illustrated in particular in FIG. 1, the standby box 1 comprises a body 2 in the form of a profile which extends mainly along a longitudinal axis X-X. The hold box has a generally trapezoidal cross section. Of course, the cross section of the standby box 1 can be quadrangular or even rectangular.

As can be seen in FIG. 1, and whatever the embodiment, the standby box 1 comprises a body 2 comprising a bottom 2a and two side walls 2b delimiting an open internal volume.

Whatever the embodiment of the hold box 1, the body 2 of the hold box 1 comprises at least one location 4 shaped to at least partially receive a holding tool 6 or at least one housing 4 shaped to at least partially housing said holding tool 6.

Whatever the embodiment of the standby box 1, the latter comprises at least one magnetic holding tool 6 configured to hold the standby box 1 on a formwork, for example a sheet (not shown), the holding tool 6 preferably being a flexible magnetic strip or several flexible magnetic strips.

Whatever the embodiment of the standby box 1, said box 1 comprises a film 7 preferably covering the entire body 2 of the standby box 1, said film making it possible to close the body 2 in a substantially sealed manner and if necessary, hold the holding tool (s) 6 on the body 2 of the box 1.

Whatever the embodiment, the pouring of concrete and the formation of a concrete structure consisting of two concrete elements 200, 201 will now be described, with reference to FIGS. 10 to 12. During the pouring of the concrete 200, each wall lateral 2b of the body 2 each converges towards an extension of the central portion 3si or else converges each towards the central portion 3 or else converges towards each other if there is no central portion. The concrete presses on each side wall 2b as can be seen in FIGS. 11 and 12, so as to form a recess between the connecting reinforcements 100.

Advantageously, the deformation of each side wall 2b makes it possible to create undulations in the concrete of first pouring 200. When removing the formwork and the holding box 1, and during the second pouring of concrete 201, the second pouring concrete 201 is wedged in the undulations created by the concrete 200 of the first pouring, which gives better resistance to the structure and the forces created by seismic waves in particular, by limiting the shearing effect on the recovery irons or connecting reinforcement 100.

The first embodiment and the second embodiment will now be described with reference to FIGS. 1 to 4.

According to the first embodiment and the second embodiment of the standby box 1, the body 2 comprises a central portion 3 arranged between the side walls 2b of the body 2 so as to form two channels 5 on either side of the central portion 3. Each channel 5 is delimited by a side wall 2b of the body, of a part of the bottom 2a of the body 2 and of a wall 3b of the central portion 3. Each channel 5 is open and shaped to accommodate a strand of connecting frame 100. For each channel, the side wall 2b of the body 2 and the wall 3b of the central portion 3 extend secantly relative to the bottom 2a of the body 2. Thereafter, we will call for each channel “first side” the side wall 2b of the body 2 and the wall of the central portion will be called “second side”.

According to the first and second embodiments, the central portion 3 comprises one or more extensions 3a extending from a wall of the central portion 3 towards one of the side walls 2b of the body 2.

As can be seen in particular in FIG. 4, the extension (s) 3a are breakable (dotted marking). The breakability of the extensions 3a makes it possible, if necessary, to widen the opening of the passage of the strands of the connection fittings 100 to adapt to the different dimensions of the connection fittings 100.

According to the first embodiment and the second embodiment of the standby box 1, the housing 4 comprises a first part 4a and a second part 4b. The first housing part 4a 4 is dimensioned to at least partially house a holding tool 6 of the flexible magnetic strip type or two holding tools 6 of the flexible magnetic strip type, arranged side by side in the width direction of the box. put on hold 1. The second housing part 4b 4 is dimensioned to accommodate a holding tool 6 of the magnetic rule type. Advantageously, the housing 4 has several configurations illustrated in FIGS. 2, 5 and 6. In the first configuration illustrated in FIG. 2, only the first part 4a of the housing 4 is used to accommodate a single flexible magnetic strip 6. In the second configuration illustrated in FIG. 5, only the first part 4a of the housing 4 is used to accommodate two flexible magnetic strips 6 arranged one next to the other in the direction of the width of the box 1. In the third configuration illustrated in FIG. 6, only the second part 4b of the housing 4 is used to house a magnetic rule 6.

According to the first and second embodiments, the first part 4a of the housing 4 is arranged at the bottom 2a of the body 2 and preferably under the central portion 3 and even more preferably at least partially under the channels 5. The second part 4b of the housing 4 is arranged in the central portion 3 above the first portion 4a, the second housing part 4b 4 communicates with the first housing part 4a 4.

According to the first embodiment and the second embodiment of the standby box 1, and as illustrated in numerous figures such as FIGS. 1 to 3, 5 and 6, the standby box 1 comprises two feet 8 placed on either side of the first housing part 4a 4.

The second embodiment differs from the first embodiment only in that the first side of each channel comprises a folded flange 5d oriented respectively towards the second side of each channel so as to restrict the opening of the channel 5.

In FIG. 7 is illustrated a first variant of the second embodiment of the standby box 1. The first variant differs from the second embodiment in that the standby box 1 comprises one or more breakable tabs 9 arranged in the housing 4. The breakable tab (s) 9 are configured to separate the first part 4a of the housing 4 from the second part 4b of the housing 4. Thus, when the tongues are held in the housing 4, only a holding tool 6 of the strip type magnetized can be used and if we want to adapt the standby box for a magnetic ruler type holding tool 6, it suffices to break the breakable tab (s) 9. The rest of the characteristics of the second embodiment are applicable to the first variant.

In Figures 8 and 9 is illustrated a second variant of the second embodiment of the standby box. The second variant differs from the second embodiment in that the standby box 1 comprises one or more foldable tabs 10, arranged in the housing 4 of the central portion 3 and configured to be movable between at least two positions: a first so-called deployment position separating the first part 4a from the second part 4b of the housing 4 so that only a holding tool 6 of the magnetic strip type can be used (FIG. 8); and a second position known as the folded position in which the tab or tabs 10 are folded back into the housing 4 allowing the insertion of a holding tool 6 of the magnetic rule type (FIG. 9). The rest of the characteristics of the second embodiment are applicable to the second variant.

In Figure 13 is illustrated a third embodiment of the standby box 1. The third embodiment differs from the second embodiment in that the housing 4 comprises only a single part 4a shaped to accommodate only one or more holding tools 6 of the magnetic strip type. In addition, the central portion 3 comprises a single wall 3b which is therefore common to the two channels 5. The rest of the characteristics of the second embodiment are applicable to the third embodiment.

In FIG. 14 is illustrated a fourth embodiment of the standby box 1. The fourth embodiment differs from the second embodiment in that the central portion 3 has a different shape and in that the extensions 3a of the portion central 3 are aligned on the same plane. The rest of the features of the second embodiment are applicable to the fourth embodiment.

In FIG. 15 is illustrated a fifth embodiment of the stand-by box 1. The fifth embodiment differs from the second embodiment in that the body 2 has no central portion and then comprises a single channel 5 in which is houses the connection fittings. In addition, in the fifth embodiment, the housing 4 comprises only a single part 4a shaped to accommodate only one or more holding tools 6 of the magnetic strip type. The rest of the features of the second embodiment are applicable to the fifth embodiment.

In a variant not shown of the fifth embodiment, the housing 4 can be replaced by a location and in this case the bottom 2a of the body is plane and the body 2 is devoid of foot.

In FIG. 16 is illustrated a sixth embodiment of the standby box 1. The sixth embodiment differs from the second embodiment in that the body 2 is devoid of central portion and then comprises a single channel 5 in which is houses the connection fittings. In addition, in the sixth embodiment, the body 2 has a location 4 and not a housing for receiving the holding tool 6. The holding tool 6 is a flexible magnetic strip and is arranged between the film 7 and the body 2 of the standby box 1.

Of course, the invention is not limited to the embodiments described and shown in the appended figures. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (10)

1. Standby box kit (1) comprising: - at least one hold box (1) comprising at least one body (2) of hold box (1), said body (2) comprising at least one generally non-metallic portion and comprising at least one internal volume open defined by at least one bottom (2a) and two side walls (2b), said open internal volume being shaped to at least partially house at least one connecting frame, - at least one magnetic holding tool (6) configured to hold the standby box (1) on a formwork, said magnetic holding tool (6) being intended to be positioned on the body (2) of the placing box standby (1) characterized in that the holding tool (6) is a flexible magnetic strip. 2. Kit according to claim 1, wherein the standby box (1) comprises a magnetization reinforcement accessory intended to be arranged on the body (2) of the standby box (1). 3. Kit according to any one of claims 1 or 2, wherein the body of the box comprises a central portion (3) formed between the side walls (2b) of the body (2), and two open receiving channels (5) configured to each receive at least one strand of connecting armature (100), said channels (5) being arranged on either side of the central portion (3), each channel (5) being formed of at least one side wall (2b) of the body (2) of the standby box (1). 4. Kit according to claim 3, wherein the central portion (3) of the body (2) comprises at least one extension (3a) extending from the central portion (3) towards a side wall (2b) of the body (2 ), said at least one extension (3a) being preferably breakable. 5. Kit according to any one of claims 1 to 4, wherein the body (2) of the standby box (1) comprises at least one location (4) shaped to at least partially receive the holding tool ( 6) or at least one housing (4) shaped to at least partially house said holding tool (6). 6. Kit according to claim 5, wherein the housing (4) of the body comprises a first part (4a) arranged at the bottom of the body of the standby box (3) and shaped to receive at least one flexible magnetic strip. (6). 7. Kit according to any one of claims 5 or 6, wherein the standby box (1) comprises one or more tabs (9, 10) breakable or foldable arranged in the housing (4) and configured to delimit the at least partially the first part (4a) of housing (4). 8. Kit according to any one of claims 1 to 7, in which the standby box (1) comprises a film (7) at least partially covering the body (2) of the standby box (1) or covering the entire body (2). 9. Kit according to any one of claims 1 to 8, wherein each side wall (2b) of the body (2) is plastically or elastically deformable under the effect of a concrete pouring pressure. 10. Use of at least one flexible magnetic strip (6) for holding on a formwork a holding box (1) of a kit according to any one of claims 1 to 9, said placing box on hold (1) comprising at least one body (2) of standby box (1), said body (2) body comprising at least one generally non-metallic portion and having at least one open internal volume delimited by at least one bottom (2a) and two side walls (2b), said open internal volume being shaped to at least partially house at least one connecting frame, said flexible magnetic strip being positioned on the body (2) of the standby box (1 ) and preferably on the bottom (2a) of the body (2) of the standby box (1).