Roller shutter flange, associated protection installation and assembly method

Abstract

A roller shutter flange (300) comprising a peripheral portion (350) in which a slot (352) is provided, and a mounting portion (310) comprising a recess (312) configured to receive an end bearing (22) of the tube, which is configured to be assembled to the peripheral portion by being received in the slot. The flange includes notches (356) regularly spaced along one edge of the slot (352), and teeth (336) formed on the mounting portion (310) and configured to cooperate with some of the notches, so that during assembly of the flange, the position of the mounting portion relative to the peripheral portion along the adjustment axis is incrementally adjustable.

Description

[0001] The present invention relates to a roller shutter flange, a protective installation, in particular for a roller shutter comprising such a flange and a method for assembling such a flange.

[0002] In buildings whose exterior walls have openings for joinery such as a door or window, these openings are generally equipped with a protective system, for example against intrusions, with a protective screen such as a roller shutter, or a solar protection system, with for example a screen such as a solar canvas, a roller shutter, a slatted blind or an adjustable sunshade, also called "BSO", or even an insect protection system, with a mosquito net.

[0003] Generally, the protective screen is attached to a tube, which is housed in a recess created at the top of an opening. For example, this recess may be defined by the roller shutter housing or directly within the wall, such as in a lintel. The tube has two end bearings, each supported by a flange, allowing the tube to pivot relative to the flanges around a winding axis. The flanges are fixed to the wall, typically attached to other components of the protective system, each specifically to its respective guide rail for the screen.

[0004] When the protective screen is fully wound around the tube, the size of this winding depends on factors such as the tube diameter, the type of screen, and the window height. During the installation of the protective system, the position of the winding axis relative to the flanges is adjusted according to the winding size, specifically to reduce friction between the screen and other components of the protective system during winding and unwinding movements around the tube.

[0005] FR-2 893 348-A1 describes, for example, a flange comprising three mounting recesses for a roller tube bearing. The recesses are small, which limits the mounting options for the tubes. In particular, this flange is not compatible with motorized roller tubes, which require larger diameter recesses for transmitting motor torque. EP-1 184 534-A2 or FR-2 993 918-A1 each describe other prior art roller shutter flanges, with a mounting portion comprising a recess configured to receive an end bearing for the roller tube and a peripheral portion configured to be secured to the rest of the roller shutter installation. The mounting portion includes adjustment notches to position the mounting portion relative to the peripheral portion.

[0006] It is these problems that the invention intends to remedy in particular, by proposing a roller shutter flange which allows fine adjustment of the position of the winding tube relative to the flanges, while being compatible with large bearings, for example motor bearings.

[0007] For this purpose, the invention relates to a flange, configured to support a winding tube of a protection installation, in particular a roller shutter.

[0008] According to the invention: The flange has a front face that is generally flat and extends orthogonally to a winding axis. The flange comprises: a peripheral portion, configured to be fixed to the rest of the roller shutter installation and in which a slot is provided, comprising two opposing straight edges parallel to an adjustment axis; a fixing portion, configured to be assembled to the peripheral portion by being received in the slot in an assembled configuration of the flange; the fixing portion comprising a recess configured to receive an end bearing of the winding tube. The flange also includes adjustment means, comprising: notches, regularly distributed along at least one of the straight edges of the slot, the notches along the same straight edge forming a row of notches; and teeth, formed on the fixing portion and configured to cooperate.by complementary shape, with a portion of the notches, so as to prevent translational movements of the fixing portion relative to the peripheral portion along the adjustment axis, the adjustment means then being in an engaged configuration, and the flange includes stop means, which are provided in at least one of the elements chosen from the peripheral portion and the fixing portion, the stop means being configured to limit the relative movements of the fixing portion with respect to the peripheral portion to translational movements along the adjustment axis when the stop means are in an engaged configuration, the flange then being in an engaged configuration, the stop means and the adjustment means are configured so that, during the assembly of the fixing portion to the peripheral portion,The position of the fixing portion relative to the peripheral portion along the adjustment axis is adjustable incrementally, according to an adjustment step corresponding to one step between two successive notches.

[0009] Thanks to the invention, during the assembly of the flange, the position of the fixing portion relative to the peripheral portion along the adjustment axis is incrementally adjustable, with an adjustment step corresponding to one step between two successive notches. The adjustment step depends on the shape of the notches and teeth, allowing for finer adjustment compared to known prior art devices, in particular, adjustment independent of the size of the impression that accommodates the bearing.

[0010] According to advantageous but not mandatory aspects of the invention, such a flange may incorporate one or more of the following features taken individually or in any technically permissible combination: The stop means include: a peripheral rim, which is provided on the peripheral portion at the edge of the light, the peripheral rim including two straight segments, each of which is provided inset from a front face of the peripheral portion and which form the straight edges of the light, two complementary segments, which are provided on the fixing portion, each complementary segment being configured to slide against a respective straight segment when the flange is in the engaged configuration, whereas when the flange is in the engaged configuration, a front face of the fixing portion is coplanar with the front face of the peripheral portion.The stop means provided on the fixing portion include a third segment, the third segment being arranged opposite one of the two complementary segments so as to form a slide extending along a slide axis parallel to the adjustment axis, the slide being configured to receive one of the straight segments of the peripheral rim when the flange is in engaged configuration, whereas when the corresponding straight segment is received in the slide, a kinematic link between the fixing portion and the peripheral portion is a pivot-sliding link along the slide axis.Some of the teeth of the fastening portion are formed in the bottom of the slide, while some of the notches are formed on the straight segment intended to be received in the slide. When the corresponding straight segment is received in the slide, a kinematic link between the fastening portion and the peripheral portion is a pivot joint about the slide axis. The flange also includes a locking device, which is configured to hold the flange in the engaged configuration. The flange also includes a locking device, which is configured to hold the flange in the engaged configuration, while the locking device is configured to prevent rotational movement of the fastening portion relative to the peripheral portion about the slide axis.The locking device includes a stop piece, which is separate from the fastening portion and the peripheral portion. The stop piece is configured to hold the fastening portion in the engaged position on the peripheral portion. The fastening portion is made of a synthetic polymer material. The locking device includes a non-return element, for example a stop clip, which is formed on the fastening portion and configured to hold the fastening portion in the engaged position on the peripheral portion.

[0011] The invention also relates to a protective installation, in particular a roller shutter, comprising: two flanges, at least one of the flanges being as described previously, the flanges being attached to a wall and situated above an opening in that wall, a winding tube with two end bearings, each of the bearings being supported by a respective flange, the tube being mounted pivoting relative to the flanges around the winding axis, a protective screen, in particular a roller shutter curtain, which is attached to the tube and which is configured to wind around the tube or unwind from the tube, depending on the rotational movements of the tube around the winding axis.

[0012] In another aspect, the invention relates to a method for assembling a flange as described above, the assembly method comprising the successive steps of: a) present the slide opposite the corresponding straight segment, choosing the position of the fixing portion relative to the peripheral portion along the adjustment axis, the teeth provided at the bottom of the slide being located opposite some of the notches of the peripheral portion, b) insert the corresponding straight segment into the slide, so as to engage the teeth in the opposite notches, c) bring the fixing portion closer to the peripheral portion by rotating the fixing portion relative to the peripheral portion around the slide axis, d) hold the flange in the engaged configuration using the locking device.

[0013] The invention will be better understood, and other advantages thereof will become more apparent in the light of the following description of an embodiment of a roller shutter flange, a roller shutter installation, and an assembly method, conforming to its principle, given solely by way of example and with reference to the accompanying drawings, in which: [ Fig 1 ] there figure 1 is a perspective view of a roller shutter installation according to the invention, the roller shutter installation comprising a winding tube supported by two brackets, each bracket comprising a roller shutter flange; [ Fig 2 ] there figure 2 represents, on two inserts a) and b), one of the supports of the figure 1 , observed from two different viewpoints; [ Fig 3 ] there figure 3 is a partially exploded perspective view of the support of the figure 2 , some parts being hidden, the support including a flange confirms a first embodiment of the invention; Fig 4 ] there figure 4 represents respectively, on three inserts a), b) and c), a perspective view of a first piece of the flange of the figure 3 , and a perspective view of a second piece of the flask of the figure 3 , observed from two different viewpoints; [ Fig 5 ] there figure 5 represents, on two inserts a) and b), assembly steps of the flange of the figure 3 ; Fig 6 ] there figure 6 represents, on two inserts a) and b), assembly steps of the flange of the figure 3 , And [ Fig 7 ] there figure 7 represents, on two inserts a) and b), flanges conforming to alternative embodiments of the invention.

[0014] A protection installation 10 is schematically represented on the figure 1 Installation 10 is an intrusion protection system, which includes a roller shutter. Therefore, this protection system is a roller shutter installation.

[0015] The installation 10 is fixed to a wall 12, assumed to be flat and vertical, in which an opening 14 is provided, passing through the wall 12. The opening 14 is covered by a protective screen 24, which belongs to the protective installation 10. The protective screen 24 is here a roller shutter curtain. As non-limiting alternatives, the screen 24 is a solar shade, or even a mosquito net, etc.

[0016] Installation 10 includes a box 18, which is schematically represented here with dashed lines. The box 18 is fixed to the wall 12, above the opening 14. The box 18 has an elongated, generally parallelepiped shape and extends along its length along a box axis A18. The box axis A18 is assumed to be horizontal. The description is based on the orientation of the components of installation 10 as shown in the drawings, although this may differ in reality. Installation 10 has a generally symmetrical structure with respect to a transverse plane T18 of the installation, the transverse plane T18 being orthogonal to the box axis A18.

[0017] The chest 18 provides a receiving volume V18 for other parts of the installation 10, as described below. In the examples, the chest 18 is made from an assembly of boards.

[0018] According to a first alternative (not shown), the receiving volume V18 is partially delimited by wall 12, for example, within wall 12, specifically within a lintel that defines the upper part of opening 14. This configuration corresponds to a so-called "tunnel" installation. According to a second alternative (not shown), the receiving volume V18 is essentially contained within the lintel, according to a so-called "lintel" installation configuration. These alternatives are not exhaustive.

[0019] The installation 10 comprises a tube 20, which in this case is a winding tube for the screen 24, and two brackets 30, which are fixed to the wall 12 and configured to support the tube 20. The two brackets 30 are arranged symmetrically with respect to the transverse plane T18 of the installation 10, the two brackets 30 having an overall symmetrical structure with respect to each other. What is true for one of the two brackets 30 is transposable to the other bracket 30.

[0020] The tube 20 comprises two opposite ends, each of which is equipped with an end bearing 22. Each of the end bearings 22 is supported by a respective support 30, so that the tube 20 is pivotally mounted relative to the supports 30, around the trunk axis A18.

[0021] An upper end 25A of the screen 24 is attached to the tube 20, here by means of two locks 26 belonging to the installation 10. It is understood that according to the direction of rotation of the tube 20 around the trunk axis A18, the screen 24 winds around the tube 20, or unwinds, a lower end 25B of the screen 24 rising or falling in front of the opening 14. By extension, the trunk axis A18 is also a winding axis of the tube 20.

[0022] The rotation of tube 20 is controlled by a user via a drive device. The drive device is not shown. Depending on the configuration, the drive device is either manual, for example with a crank and gear system or with a belt drive, or motorized, with an electric motor. In the case of a motorized drive device, part of the motor is usually housed within tube 20, while a pivoting head of the motor protrudes from the tube and forms one of the tube's bearings.

[0023] Each support 30 is secured to the wall 12, that is, fixed to the wall 12, either directly or via another element of the installation 10. In the illustrated example, each support 30 is fixed to a respective track 32, the track 32 being fixed to the wall 12. The installation 10 thus comprises two tracks 32, which are located opposite each other, symmetrically with respect to the transverse plane T18. Each track 32 extends vertically along one side of the opening 14, the two tracks 32 serving to guide the screen 24, particularly during the raising or lowering movements of the lower end 25B of the screen 24.

[0024] In the illustrated example, each bearing 22 comprises a star-shaped part, which is received in a complementary-shaped recess in the support 30. Each bearing 22 thus received in the complementary recess is blocked from rotation, relative to the support 30, around the winding axis A18. The shape of the bearing 22 is not limiting.

[0025] Support 30 shown on the right of the figure 1 is shown on a larger scale, with the associated slide 32 and the associated end bearing 22, on the figure 2 The rest of the description is made with reference to this support 30.

[0026] Each support 30 includes a leg 100, a tulip 200 and a flange 300.

[0027] The bracket 100 is formed from a metal plate, preferably steel. The bracket 100 is, for example, manufactured by cutting. The bracket 100 includes a fixing tenon 102, by which the bracket 100 is configured to be assembled to the flange 300, and a fitting 104, by which the bracket 100 is configured to be secured to the wall 12. The fitting 104 has a free end, which is tapered, and a captive end, which is opposite the free end and is connected to the tenon 102. In the illustrated example, the brackets 100 are secured to the wall 12 by means of the slides 32, the fitting 104 of each bracket 100 being fixed to a respective slide 32, which is fixed to the wall 12.

[0028] The tulip 200 comprises an outer wall 202A and an inner wall 202B, which are arranged opposite each other and connected by a base 202C. The outer wall 202A and the inner wall 202B diverge from each other, hence the name "tulip". The outer wall 202A, the inner wall 202B, and the base 202C are configured to guide an edge of the protective screen 24 along one front side of the base 202C, so as to limit friction between the screen 24 and the corresponding slide 32.

[0029] The tulip 200 provides a conduit 204 for fitting the fitting 104. The tulip 200 includes a first elastic clip 206 configured to cooperate, in particular by complementarity of form, with a first orifice provided in the fitting 104, so as to fix the tulip 200 to the fitting 104 when the fitting 104 is fitted into the conduit 204, in a fitted position of the leg 100 relative to the tulip 200.

[0030] Each of the flanges 300 supports one of the end bearings 22 of the winding tube 20, so that the tube 20 is mounted pivotally relative to the flanges 300 around the winding axis A18. The two flanges 300 assembled to the tube 20 together form a mounting sub-assembly 400 of the installation 10.

[0031] The flange 300 has a front face 302A, which is generally flat and extends orthogonally to the winding axis A18, and a rear face 302B opposite the front face 302A. The flange 300 includes a mounting portion 310, which has a recess 312 configured to receive one of the end bearings 22 of the winding tube 20. The front face 302A faces the tube 20 when the tube 20 is assembled to the support 30.

[0032] The flange 300 also includes a peripheral portion 350, which is configured to be secured to the rest of the roller shutter installation 10 and in which a slot 352 is provided for receiving the fixing portion 310. The slot 352, which here has an oblong hole shape, comprises two opposing straight edges 352A and 352B that are parallel to an adjustment axis A352. The shape of the slot 352 is not limiting.

[0033] The fixing portion 310 is configured to be assembled to the peripheral portion 350 by being received in the slot 352 in an assembled configuration of the flange 300. The fixing portion 310 is made of synthetic polymer material and is preferably produced by hot injection molding. The peripheral portion 350 is made of a metal plate, preferably steel, and is produced in particular by stamping and / or deep drawing.

[0034] As described later, the fixing portion 310 is adjustable in position relative to the peripheral portion 350 along the adjustment axis A352. It is therefore possible to adjust the position of the tube 20 relative to the supports 30, during the assembly of the installation 10, in particular according to the size of the screen 24.

[0035] In the illustrated example, the fixing portion 310 includes a wall 314, which defines the footprint 312. The wall 314, and by extension the footprint 312, have a cylindrical shape centered on the winding axis A18, the wall 314 delimiting an internal volume V312 which is configured to receive one of the end bearings 22 of the winding tube 20 according to an insertion movement F312 of the bearing 22 into the footprint 312. The wall 314 has an internal side, oriented towards the side of the internal volume V312, and an external side, oriented opposite to the internal side.

[0036] The F312 insertion movement, which is represented by an arrow at the figure 3 , is a translational movement parallel to the winding axis A18. The bearing 22 has a shape complementary to the footprint 312, so that the bearing 22 is blocked in rotation relative to the fixing portion 310, and by extension relative to the flange 300, around the winding axis A18.

[0037] Advantageously, the flange 30 incorporates a locking device, which facilitates the assembly of the bearing 22 to the flange 30. Thus, the mounting portion 310 also includes an opening 380, which is formed through the wall and leads into the internal volume. In the illustrated example, the mounting portion 310 comprises three openings 316, which are evenly distributed around the winding axis A18.

[0038] The flange 300 also includes a locking piece 380, which here generally has a ring shape 382 with a control tab 384. The control tab 384 is connected to the ring 382 and is configured to be operated by an installer, so as to control the movements of the locking piece 380.

[0039] The ring 382 is arranged on an external side of the wall 314 and cooperates with the wall 314, in particular by sliding surfaces, so that the ring 382 is guided in rotation relative to the fixing portion 310 around the winding axis A18.

[0040] The locking piece 380 includes at least one protrusion 386, which is formed in projection on the ring 382 and which extends from the ring 382 centrifugally to the winding axis A18. Each protrusion 386 is associated with a respective opening 316.

[0041] The locking piece 380 is movable relative to the fixing portion 310 between a locking position, in which each protrusion 386 of the locking piece 380 protrudes from the associated opening 316 in the internal volume V312 of the impression 312, and a withdrawn position, in which each protrusion 386 does not protrude into the internal volume V312 of the impression 312.

[0042] Each protrusion 386 is configured to be received in a complementary recess 22A, formed in the bearing 22, so as to prevent translational movement of the bearing 22 relative to the mounting portion when the bearing is received in the recess and the locking piece is in the locked position. Each protrusion 386 thus forms a locking portion of the locking piece 380.

[0043] The protrusions 386 are tooth-shaped, while the complementary recesses 22A are groove-shaped. These shapes are not exhaustive. In the illustrated example, each opening 316 is formed in a plane transverse to the winding axis A18.

[0044] In the illustrated example, the ring 382 is guided in rotation relative to the fixing piece 310, so the locking and retraction positions are angular positions of the ring 382 relative to the fixing portion 310 around the winding axis A18. The control tab 384 thus allows the locking piece 380 to be moved between its retracted position and its locking position.

[0045] The flange 300 advantageously includes markings 304, for example pictograms and / or alphanumeric characters, which are arranged so as to indicate to the user, according to an angular position of the control tab 384 around the winding axis A18, whether the locking piece 380 is in either the locked position or the withdrawn position.

[0046] In the illustrated example, the inscriptions 304 are engravings, which are located on the peripheral portion 350 and which here represent a closed padlock and an open padlock.

[0047] The assembly of the fixing portion 310 to the peripheral portion 350 is now described, with reference to figures 4 à 6 .

[0048] The mounting portion 310 and the peripheral portion 350 each comprise a front face, which together form the front face 302A of the flange 300 when the mounting portion 310 is assembled to the peripheral portion 350, as shown in the diagrams. figures 2 , 5b ) And 6 , where the flange is in a so-called "engaged" configuration.

[0049] The flange 300 includes stop means, which are provided in at least one of the elements selected from the peripheral portion 350 and the fixing portion 310. The stop means are configured to limit the relative movements of the fixing portion 310 with respect to the peripheral portion 350 to translational movements along the mounting axis A352 when the stop means are in an engaged configuration, the flange then being in the engaged configuration.

[0050] In the illustrated example, the stop means include a peripheral rim 354, which is formed on the peripheral portion 350 at the edge of the opening 352. The peripheral rim 354 includes two straight segments 354A and 354B, each of which is set back from the front face of the peripheral portion 350 and which form the straight edges 352A and 352B of the opening 352. The peripheral rim 354 is discontinuous here, so as not to generate movements of the tongue 384.

[0051] The stop means also include two complementary segments 332A and 332B, which are formed on the mounting portion 310. Each complementary segment 332A or 332B is configured to cooperate, particularly through complementary shapes, so as to slide against a respective straight segment 354A or 354B when the flange 30 is in the engaged configuration. Advantageously, when the flange 300 is in the engaged configuration, the front face of the mounting portion 310 is coplanar with the front face of the peripheral portion 350. This avoids the risk of interference with the screen 24 during the use of the installation 10. The arrangement and shape of the stop means are not limiting.

[0052] The flange 300 also includes adjustment means. The stop means and the adjustment means are configured so that, when the fixing portion 310 is assembled to the peripheral portion 350, the fixing portion 310 is adjustable in position relative to the peripheral portion 350 along the adjustment axis A352.

[0053] In the illustrated example, the adjustment means include notches 356, which are regularly spaced along at least one of the straight edges 352A or 352B of the opening 352, the notches 356 along the same edge forming a row 358 of notches. In the illustrated example, notches 356 are provided along each of the straight edges 352A and 352B, the peripheral portion thus comprising two rows 358 of notches 356. The notches 356 here have a rectangular profile and are provided by notches cut into the straight segments 354A and 354B. Two successive notches 356 are thus separated by a notch, a step between two successive notches 356 being equal to a length, measured parallel to the adjustment axis A352, of one notch and one notch.

[0054] The adjustment means also include teeth 336, which are formed on the mounting portion 310 and are configured to cooperate, by complementary shape, with a portion of the notches 356, so as to prevent translational movement of the mounting portion 310 relative to the peripheral portion 350 along the adjustment axis A352 when the flange is in the engaged configuration. The teeth 336 are then engaged in some of the notches 356. By extension, the adjustment means are also said to be in an engaged configuration.

[0055] The teeth 336 here each have a profile corresponding to the notches between two successive notches 356. Preferably, the teeth 336 have the same profile as the notches 356. In the illustrated example, several teeth 336 are provided along each straight segment 332A and 332B of the fastening portion 310, forming rows 338 of teeth 336.

[0056] Thus, during the assembly of the flange 300, the position of the fixing portion 310 relative to the peripheral portion 350 along the adjustment axis A352 is adjustable incrementally, according to an adjustment step corresponding to the step between two successive notches 356. The adjustment step depends on the shape of the notches 356 and the teeth 336, which allows for finer adjustment compared to devices known in the prior art, in particular an adjustment independent of the size of the recess 312, which accommodates the bearing 22. In the illustrated example, the step between two successive notches 356 is equal to 10 mm, compared to a diameter of the star-shaped bearing 22 of approximately 60 mm. Each row 358 of notches 356 here has five notches, while each row 338 of teeth 336 here has three teeth 336. It is thus possible to choose between three different positions.

[0057] Advantageously, markings are provided on the flange 300, so as to indicate to the installer the position in which he must assemble the fixing portion 310 and the peripheral portion 350. The markings are not shown.

[0058] More generally, it is understood that the position adjustment of the fixing portion 310 relative to the peripheral portion 350 is possible with a single row 358 of notches 356. The configuration with two rows 358 of notches is however preferred because it allows better absorption of the forces transmitted during the use of the installation 10, which reduces the risks of accidental breakage of the fixing part 310.

[0059] Advantageously, the stop means provided on the fastening portion 310 include a third segment 332C. The third segment 332C is arranged opposite one of the two complementary segments 332A or 332B, so as to form a slide 340 extending along a slide axis A340 parallel to the adjustment axis A352. The slide is configured to receive one of the straight segments 354A or 354B of the peripheral rim 354 when the flange 300 is in the engaged position. When the corresponding straight segment 354A or 354B is received in the slide, between the third segment 332C and the opposite complementary segment 332A or 332B, a kinematic link between the fastening portion 310 and the peripheral portion 350 is a pivot-sliding link about the slide axis.

[0060] In the illustrated example, particularly in figure 4b ), the third segment 332C is arranged opposite the complementary segment 332A, called the first segment. The other complementary segment 332B is called the second segment.

[0061] Some of the teeth 336 of the fastening portion 310 are advantageously provided in a recess of the slide 340. In other words, a row 338 of teeth 336 is provided in the recess of the slide 340. Some of the notches 356 are provided on the straight segment—here, the straight segment 352A—intended to be received in the slide 340. Thus, when the corresponding straight segment 352A is engaged in the slide 340, a kinematic link between the fastening portion 310 and the peripheral portion 350 is a pivot joint about the slide axis A340. This configuration is illustrated in figure 5a ). From the configuration of the figure 5a ), the fixing portion 310 is brought closer to the peripheral portion 350 by a flapping movement F340, which is a rotational movement of the fixing portion 310 relative to the peripheral portion 350 around the slide axis A340. The flapping movement F340 is represented by an arrow at the figure 5a ).

[0062] The F340 folding movement continues until the second segment 332C of the stop means comes into contact with the associated right-hand segment 354B. The flange is then in the engaged configuration, as shown in the diagram. figure 5b .

[0063] The special arrangement with a row of 336 teeth at the bottom of the slide 340 facilitates the assembly and positioning of the fixing portion 310 relative to the peripheral portion 350.

[0064] When installation 10 is in usage configuration, as shown in figure 1 The forces exerted by tube 20 on the flange tend to maintain flange 300 in the engaged position. In addition, flange 300 advantageously includes a locking device, which is configured to hold flange 300 in the engaged position.

[0065] In the illustrated example, the locking device is a stop piece 370, which is a separate part from the fastening portion 310 and the peripheral portion 350. The stop piece 370 is configured to hold the fastening portion 310 in the engaged position on the peripheral portion 350.

[0066] The stop piece 370 here includes a gripping portion 372 in the shape of "D", and stop clips 374, which extend in projection from a straight bar of the D. The stop clips 374 are configured to cooperate with complementary holes 342, which are recessed on the fixing portion 310.

[0067] In the illustrated example, the additional holes 342 are provided along the row 338 of teeth 336 adjacent to the second segment 332B. Thus, when the flange 300 is in the engaged configuration, the retaining clips 374 are inserted into the additional holes 342, the retaining piece 370 then being in a stopped position relative to the rest of the flange 300. By elastic return, the retaining clips 374 hold the retaining piece 370 in the stopped position, in which the gripping portion 372 forms an obstacle, which prevents the fixing portion 310 from moving away from the peripheral portion 350 in a movement opposite to the folding movement F340.

[0068] The slide 340, with a row 338 of teeth 336 at the bottom, and the stop piece 370 enable a particularly simple and quick assembly method for the flange 30. The assembly method comprises the following successive steps, these steps consisting of: a) present the slide 340 opposite the corresponding straight segment 352A, choosing the position of the fixing portion 310 relative to the peripheral portion 350 along the adjustment axis A352, the teeth 336 provided at the bottom of the slide 340 being located opposite some of the notches 356 of the peripheral portion 350, b) insert the corresponding straight segment 332A into the slide 340, so as to engage the teeth 336 in the opposite notches 356, c) bring the fixing portion 310 closer to the peripheral portion 350 by rotating the fixing portion 310 relative to the peripheral portion around the slide axis A340, d) hold the flange 30 in the engaged configuration using the locking device 370.

[0069] Assembling flange 30 is therefore particularly easy and quick, requiring no special effort. This assembly is carried out by hand and without tools.

[0070] The flange can also be disassembled quickly and easily by hand without tools. The installer first removes the stop piece 370, here by pulling on the gripping portion 372, then rotates the fixing portion 310 relative to the peripheral portion 350 in a movement opposite to the flapping movement F340, and finally moves the slide 340 away from the row 358 of notches 356.

[0071] Two alternative embodiments of the invention are respectively illustrated in figure 7a) et 7b In each alternative embodiment, the elements analogous to those in the other embodiment(s) described previously bear the same references and function in the same way. The following primarily describes the differences between each embodiment and the previous one(s).

[0072] With reference to the figure 7a ), the retaining piece 370 of the flange 300 according to the first embodiment is replaced by a retaining clip 377, which is here formed directly on the fastening portion 310. For example, the retaining clip 377 extends projecting from the second segment 332B. The second segment 332B is not visible on the figure 7 .

[0073] The stop clip 377 here replaces one of the teeth 336 of the row 338 which is not located at the bottom of the slide 340. The stop clip 377 cooperates with one of the notches between the notches 356, in particular by complementary shapes, so as to maintain the flange 300 in the engaged configuration.

[0074] Thus, in the first embodiment of the invention as in the second embodiment, the locking device is configured to prevent rotational movements of the fixing portion 310 relative to the peripheral portion 350 around the slide axis A340 when the flange 300 is in the engaged configuration.

[0075] Assembling the flange 300 is thus simplified, as it eliminates the need for the additional part, namely the retaining clip 370, as in the first embodiment. However, disassembling the flange 300 requires pushing back the retaining clip 377, for example using a tool such as a screwdriver, and simultaneously rotating the fixing portion 310 relative to the peripheral portion 350 in a movement opposite to the folding movement F340.

[0076] With reference to the figure 7b ), the third segment 332C of the flange 300 of the previous embodiments is replaced by an additional retaining clip 379. The flange 300 illustrated in figure 7b ) thus includes both the stop clip 377 described in reference to the figure 7a ), referred to as the first clip 377, and the additional stop clip 379. The first stop clip 377 and the additional stop clip 379 advantageously have the same structure and function in the same way.

[0077] In other words, the fastening portion 310 does not include a slide, but includes the two clips 377 and 379, which each cooperate with one of the notches between the notches 356 of a respective row 358, so as to hold the flange 300 in the engaged configuration.

[0078] In the illustrated example, the flange body has a star-shaped recess, configured to receive an end bearing for a winding tube motor. Of course, the flange can accommodate any type of part with a shape compatible with the recess, including an adapter piece, as described in published application FR-3 118 479-A1. The shape of the recess is not limiting, as long as the bearing can be prevented from rotating when it is in the recess.

[0079] In the illustrated example, the roller shutter installation 10 comprises two flanges 300, the peripheral portions 350 of these two flanges 300 being symmetrical with respect to each other.

[0080] In an alternative design not shown, the peripheral portion of each flange has a symmetrical shape with respect to a plane orthogonal to the adjustment axis A352; in particular, each peripheral portion includes two recesses for receiving the mounting tabs for the corresponding slide. Peripheral portions of the same type can thus be used for both supports of the protective installation, thereby reducing the number of different spare parts.

Claims

1. The flange (300), configured to support a winding tube (20) of a protective installation (10), in particular a roller shutter installation, in which: - the flange (300) has a front face (302A) which is generally flat and extends orthogonally to a winding axis (A18), the flange (300) comprising: • a peripheral portion (350), which is configured to be secured to the rest of the roller shutter installation (10) and in which a slot (352) is formed, which comprises two opposite straight edges (352A, 352B) which are parallel to an adjustment axis (A352), • a fastening portion (310), which is configured to be assembled to the peripheral portion (350) by being received in the slot (352) in an assembled configuration of the flange (300), the fastening portion (310) comprising an indentation (312), configured to receive an end bearing (22) of the winding tube (20), - the flange (300) further comprises adjustment means, which comprise: • notches (356), which are regularly distributed along at least one of the straight edges (352A, 352B) of the slot (352), the notches (356) formed along the same straight edge forming a row (358) of notches, • teeth (336), which are provided on the fastening portion (310) and which are configured to cooperate, through shape complementarity, with part of the notches (356), so as to prevent translational movements of the fastening portion (310) with respect to the peripheral portion (350) along the adjustment axis (A352), the adjustment means then being in an engaged configuration, characterised in that: - the flange (300) comprises stop means, which are arranged in at least one of the elements selected from the peripheral portion (350) and the fastening portion (310), the stop means being configured to limit the relative movements of the fastening portion (310) with respect to the peripheral portion (350) to translational movements along the adjustment axis (A352) when the stop means are in an engaged configuration, the flange (300) then being in an engaged configuration, - the stop means and the adjustment means are configured so that, during the assembling of the fastening portion (310) onto the peripheral portion (350), a position of the fastening portion (310) relative to the peripheral portion (350) along the adjustment axis (A352) is adjustable incrementally, with each adjustment distance corresponding to the distance between two successive notches (356).

2. The roller shutter flange (300) according to claim 1, in which: - the stop means comprise • a peripheral rim (354), which is provided on the peripheral portion (350) at the border of the slot (352), the peripheral rim (354) including two straight segments (354A, 354B), which are each provided set back from a front face of the peripheral portion (350) and which form the straight edges (352A, 352B) of the slot (352), • two complementary segments (332A, 332B), which are provided on the fastening portion (310), each complementary segment being configured to slide against a respective straight segment (354A, 354B) when the flange (300) is in the engaged configuration, - when the flange (300) is in the engaged configuration, a front face of the fastening portion (310) is coplanar with the front face of the peripheral portion (350).

3. The roller shutter flange (300) according to claim 2, in which: - the stop means formed on the fastening portion (310) include a third segment (332C), the third segment being arranged opposite one of the two complementary segments (332A) so as to form a slide (340) extending along a slide axis (A340) parallel to the adjustment axis (A352), the slide (340) being configured to receive one of the straight segments (354A) of the peripheral rim (354) when the flange (300) is in the engaged configuration, - when the corresponding straight segment (354A) is received in the slide (340), a kinematic connection between the fastening portion (310) and the peripheral portion (350) is a pivot-slide connection along the slide axis (A340).

4. The roller shutter flange (300) according to claim 3, in which: - some of the teeth (336) of the fastening portion (310) are formed in a base of the slide (340), - some of the notches (356) are formed on the straight section (354A) designed to be received in the guide (340), - when the corresponding straight segment is received in the slide, a kinematic connection between the fastening portion (310) and the peripheral portion (350) is a pivot connection about the slide axis (A340).

5. The roller shutter flange (300) according to any one of claims 1 to 4, in which: - the flange (300) also comprises a locking device (370; 377; 379), which is configured to hold the flange (300) in the engaged configuration.

6. The roller shutter flange (300) according to claim 4, in which: - the flange (300) also comprises a locking device (370; 377), which is configured to hold the flange (300) in the engaged configuration, - the locking device (370; 377) is configured to prevent rotational movements of the fastening portion (310) relative to the peripheral portion (350) about the slide axis (A340).

7. The roller shutter flange (300) according to any one of claims 5 to 6, wherein: - the locking device includes a stop piece (370), which is separate from the fastening portion (310) and from the peripheral portion (350), the stop piece being configured to hold the fastening portion (310) in the engaged position on the peripheral portion (350).

8. The roller shutter flange (300) according to any one of claims 5 to 6, wherein: - the fastening portion (310) is made of a synthetic polymer material, - the locking device includes a non-return member, for example a stop clip (377; 379), which is provided on the fastening portion (310) and which is configured to hold the fastening portion (310) in the engaged position on the peripheral portion (350).

9. A protective installation (10), in particular a roller shutter installation, comprising: - two flanges (300), at least one of the flanges (300) conforming to any one of claims 1 to 8, the flanges (300) being integral with a wall (12) and being situated above an opening (14) formed in this wall, - a winding tube (20) with two end bearings (22), each of the bearings (22) being supported by a respective flange (300), the tube (20) being mounted so as to pivot relative to the flanges (300) about the winding axis (A18), - a protective screen (24), in particular a roller shutter apron, which is attached to the tube (20) and is configured to wind around the tube (20) or unwind from the tube (20), depending on the rotational movements of the tube (20) about the winding axis.

10. A method for assembling a flange (300) in accordance with claim 6, the assembly method comprising the successive steps of: a) presenting the slide (340) opposite the corresponding straight segment (352A), by choosing the position of the fastening portion (310) with respect to the peripheral portion (350) along the adjustment axis (A352), the teeth (336) provided at the bottom of the slide (340) being situated opposite some of the notches (356) of the peripheral portion (350), b) inserting the corresponding straight segment (352A) into the guide (340) so that the teeth (336) engage in the notches (356) opposite, c) moving (F340) the fastening portion (310) towards the peripheral portion (350) by pivoting the fastening portion (310) relative to the peripheral portion (350) about the slide axis (A340), d) holding the flange (300) in the engaged configuration by means of the locking device (370; 377).

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