Roller shutter bearing support and associated roller shutter installation

Abstract

Roller shutter bearing support and associated roller shutter installation. This roller shutter bearing support (100) comprises a fixing portion (110) with a mounting plate (112) for fixing to a roller shutter installation box (10) and a shaft (114) in the form of a hollow cylinder extending along a guide axis (A114) and defining a cavity (V114). The bearing support also includes a sleeve (120) configured to support a bearing (30) of the winding tube (20) and which is received at least partially within the cavity by being movable in translation relative to the shaft along the guide axis, between an advanced position, in which the sleeve supports the bearing, and a retracted position, in which the winding tube can be extracted from the box. Control means (144), actuable by a user, allow the sleeve to be moved between the advanced and retracted positions. Figure for the abbreviation: Figure 2

Description

Title of the invention: Roller shutter bearing support and associated roller shutter installation

[0001] The present invention relates to a roller shutter bearing support, as well as a roller shutter installation comprising such a bearing support.

[0002] In buildings whose exterior walls have openings for joinery such as a door or a window, these openings are generally equipped with a protective installation, for example against intrusions, with a screen such as a roller shutter, or a solar protection installation, 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 installation, with a mosquito net.

[0003] Generally, the protective screen is attached to a tube, which is housed in a recess provided in the upper part of an opening. By way of non-limiting example, the recess is defined by a roller shutter housing, or is provided directly in the wall, for example in a lintel. The tube includes two end bearings, each supported by a fixing element, so that the tube is pivotally mounted, relative to the fixing elements, around a winding axis, most often horizontal.

[0004] During maintenance or after-sales service, it is not uncommon to have to dismantle the installation, particularly the assembly between the bearings and the fasteners. However, dismantling the assembly between the bearings and the fasteners is difficult and time-consuming. Furthermore, the mounting and dismounting of the bearings on the fasteners is often carried out at height; the difficulty and duration of these assembly and dismantling operations thus increase the risk of the installation or the technician falling during these operations.

[0005] EP-2 264 272-A1 describes, for example, a bearing support having a drawer system, allowing the winding tube to be extracted from the housing. However, this system requires that the two end bearings of the winding tube be removed simultaneously, which is impractical.

[0006] It is these problems that the invention intends to remedy in particular, by proposing a system that is more practical to use for the assembly and disassembly of the tube.

[0007] To this end, the invention relates to a bearing support for a winding tube of a roller shutter installation, the bearing support comprising: - a fastening portion, which includes: • a mounting plate, which is configured to be attached to a housing of the installation, the mounting plate defining a foreground plane, • a shaft, extending from the base, which has the shape of a hollow cylinder extending along a guide axis orthogonal to the foreground, the shaft delimiting a cavity, - a sleeve, which is configured to cooperate, notably through complementary shapes, with a bearing of the winding tube, so that the winding tube is rotationally mobile relative to the sleeve along the guide axis, the sleeve being at least partially received in the cavity and being translationally mobile relative to the barrel along the guide axis, between: • an advanced position in which, when the winding tube is present, the bearing cooperates with the sleeve, so that the winding tube is free to rotate relative to the sleeve around the guide axis, and • a retracted position, in which the bearing does not cooperate with the sleeve, the winding tube being able to be extracted from the casing, - control means, which can be operated by a user so as to move the sleeve between the forward position and the rearward position.

[0008] Thanks to the invention, the bearing support allows, in a simple and quick manner, preferably by hand and without tools, one of the bearings of the winding tube to be captured or released for the purpose of mounting or dismounting the tube. Furthermore, the device makes it possible to compensate for any dimensional tolerances of the winding tube, particularly regarding the tube's length. The bearing support is therefore particularly convenient to use.

[0009] According to advantageous but not mandatory aspects of the invention, such a bearing support may incorporate one or more of the following features taken individually or in any technically permissible combination: - The means of control include: • a light, which is provided through the shaft radially to the guide axis and which has an elongated shape extending along a path inclined relative to the guide axis, • an actuating rod, which is attached to the sleeve and passes through the light, the rod including a handle that can be operated by a user, so that when the rod moves through the light, the sleeve moves between the forward and backward positions. - The bearing support also includes indexing means, which are actuable by the operator and which are designed to selectively lock the sleeve in the forward and / or backward position. - Indexing methods include: • at least one indexing hole, which is provided through the barrel radially to the guide axis, • an additional hole, which is provided in the sleeve, the additional hole being aligned with each indexing hole when the sleeve is in the forward and / or retracted position, • a stop piece, which is configured to be received jointly in the complementary hole and in the opposite indexing hole, so as to prevent movement of the sleeve relative to the barrel. - The rod includes a second end, which is arranged opposite the handle and passes through the additional hole, the rod being movable in translation relative to the sleeve along a sliding axis which is radial to the guide axis, between: • a locked position, in which the second end protrudes from the additional hole and is suitable for being received in the opposite indexing hole when the sleeve is in the advanced or retracted position, preventing movement of the sleeve relative to the barrel, the second end of the rod forming the stop piece, • an unlocked position, in which, when the sleeve is in the forward and / or rearward position, the second end is not received in the opposite indexing hole and does not prevent movement of the sleeve relative to the barrel. - The indexing means also include a return spring, which is configured to return the rod from the unlocked position to the locked position.

[0010] The invention also relates to a roller shutter installation, comprising: - a roller shutter box, which defines an internal volume and is fixed to a wall above an opening made in the wall, - a copy of the bearing support as defined previously,

[0011] in which the fixing portion is received in the internal volume, the fixing portion being secured to the case.

[0012] Advantageously, the roller shutter installation includes a winding tube, which includes two opposite ends, each of which is provided with a respective bearing, the winding tube being received in the internal volume, one of the two bearings being supported by the bearing support.

[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 bearing support for a winding tube of a roller shutter installation and of a roller shutter installation, given solely as an example and with reference to the attached drawings, in which:

[0014] - [Fig. 1] [Fig. 1] is a perspective and cross-sectional view of a shutter installation rolling stock conforming to the invention;

[0015] - [Fig.2] [Fig.2] is a larger scale view of the installation of [Fig.1], as some elements are hidden, the roller shutter installation includes a winding tube supported by a bearing support, also conforming to the invention;

[0016] - [Fig.3] [Fig.3] shows, on two inserts a) and b), a part of the bearing support of the [Fig.2], observed from two different viewpoints;

[0017] - [Fig.4] [Fig.4] represents, respectively, on two insets a) and b), a view of side and a section, according to a broken plan IV-IV at the insert a), of the roller shutter installation of the [Fig.l], in a first configuration;

[0018] - [Fig.5] [Fig.5] represents respectively, on two inserts a) and b), a view side and a section, according to a broken plan VV to the insert a), of the roller shutter installation of the [Fig.l], in a second configuration;

[0019] - [Fig.6] [Fig.6] represents, respectively, on two insets a) and b), a view of side and a section, according to a broken plan VI-VI in insert a), of the roller shutter installation of [Fig. 1], in a third configuration, and

[0020] - [Fig.7] [Fig.7] represents, respectively, on two inserts a) and b), a view of side and a section, according to a broken plan VII-VII at the insert a), of the roller shutter installation of the [Fig.l], in a fourth configuration.

[0021] A protective installation 10 is partially shown in [Fig. 1]. The installation 10 is here an intrusion protection installation, which includes a roller shutter. The protective installation 10 is therefore here a roller shutter installation.

[0022] The installation 10 is fixed on a wall 12, assumed to be flat and vertical, in which an opening 14 is provided which passes through the wall 12.

[0023] The installation 10 here includes a box 18. The box 18 is fixed to the wall 12, above the opening 14. The box 18 provides an internal volume V18 for other parts of the installation 10, as described below. By way of non-limiting example, the box 18 is made by an assembly of boards, which delimit the internal volume V18.

[0024] The box 18 has an elongated, generally parallelepiped shape and extends lengthwise along a box axis A18. The box axis A18 is assumed to be horizontal. The description is made with respect to the orientation of the installation parts 10 as shown in the drawings, bearing in mind that this may be different in reality.

[0025] In the illustrated example, the box 18 is partially housed in a cavity formed in the wall 12, specifically in a lintel defining the upper part of the opening 14. This configuration corresponds to a so-called "half-lintel" mounting. According to an alternative not shown, the internal volume VI8 is essentially contained within the lintel, according to a so-called "lintel" mounting configuration. These alternatives are not exhaustive.

[0026] The installation 10 includes a tube 20, around which is wound a protective screen 24, which belongs to the protective installation 10. The protective screen 24 is here a roller shutter curtain, while the tube 20 is a winding tube for the screen 24. According to non-limiting alternatives, the screen 24 is a solar shade, or even a mosquito net, etc.

[0027] The tube 20 has a cylindrical shape extending along the axis of the box A18. The tube 20 is mobile in rotation relative to the box 18 around the axis of the box A18, which is therefore also a winding axis of the tube 20.

[0028] It is understood that depending on the direction of rotation of the tube 20 around the trunk axis A18, the screen 24 winds around the tube 20, or unwinds, with a lower end 25 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.

[0029] The rotation of the tube 20 is controlled by a user by means of 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 a 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 generally housed within the tube 20, while a pivoting head of the motor protrudes from the tube and forms one of the tube's bearings.

[0030] The tube 20 comprises two opposite ends, each of which is provided with a respective bearing 30. One of the bearings 30 is shown in perspective in [Fig. 2], where the tube 20 is shown schematically in transparency, and partially in section in Figures 4#b), 5#b), 6#b) and 7#b). The bearing 30, which is here formed by an end fitting into the tube 20, comprises a sleeve 32, which is ribbed and configured to be fitted into the tube 20, and an extension 34, which has a cylindrical shape centered on the trunk axis Al8 with a circular cross-section.

[0031] The installation 10 also includes a bearing support 100, which is configured to be fixed to the casing 18 and is intended to support the bearing 30, so that the winding tube 20 is free to rotate relative to the casing 18 along the casing axis A18. In other words, the bearing support 100 supports the winding tube 20.

[0032] The bearing support 100 is now described, with reference to Figures 2 and following.

[0033] The bearing support 100 includes a fixing portion 110, by which the bearing support 100 is secured to the housing 18, and a sleeve 120, by which the bearing support 100 supports the bearing 30.

[0034] The mounting portion 110 is shown in isolation in [Fig. 3]. The mounting portion 110 comprises a plate 112, which here has a generally flat shape defining a first plane PL. The plate 112 includes holes 113, which are provided to receive fasteners for attaching the plate 112 to the housing 18, here fixing screws. Alternatively or in addition, the plate 112 is bonded to the housing 18.

[0035] In the illustrated example, the housing 18 comprises two end caps 19, which close off the internal volume VI8 at the ends of the housing 18, the mounting plate 112 being secured to the housing 18 by means of one of the two end caps 19. In an alternative not shown, the mounting plate 112, and by extension the bearing support 100, is secured to the housing 18 by means of another element of the housing 18, for example by means of a bracket, etc. Generally, the mounting plate 112 is configured to be secured to the housing 18 by being received within the internal volume VI8.

[0036] The mounting portion 110 comprises a shaft 114, which projects from the plate 112. The shaft 114 has a hollow cylindrical shape extending along a guide axis Al 14 orthogonal to the foreground PL. When the plate 112 is fixed to the case 18, the guide axis Al 14 coincides with the axis of the case A18. The shaft 114 defines a cavity VI14, which has a cylindrical shape extending along the guide axis Al 14.

[0037] In the illustrated embodiment, the mounting portion 110 includes a slot 116, which is formed through the shaft 114 radially to the guide axis Al 14. The slot 116 has an elongated shape extending along a path inclined with respect to the guide axis Al 14. Thus, the slot 116 has two ends 117A and 117B, which are opposite each other. By inclined, it is understood that the slot 116 extends along a path that is neither parallel to the guide axis Al 14, nor lying in a plane orthogonal to the guide axis.

[0038] Advantageously, the fastening portion 110 includes at least one indexing hole, each indexing hole preferably being provided through the shaft 114 radially to the guide axis Al 14. In the illustrated example, the fastening portion 110 includes two indexing holes 118A and 118B, each indexing hole 118A / 118B being arranged diametrically opposite, with respect to the guide axis Al 14, at a respective end 117A / 117B of the slot 116. Advantageously, the two indexing holes 118A and 118B are connected by a groove 119, which is recessed on an inner face of the shaft 114, the inner face of the shaft 114 being oriented towards the guide axis Al 14.

[0039] The sleeve 120 has a cylindrical shape extending along the guide axis Al 14. The sleeve 120 is configured to cooperate, notably through complementary shapes, with the bearing 30 of the winding tube 20, so that the winding tube 20 is rotationally movable relative to the sleeve 120 along the guide axis Al 14. In the illustrated example, the extension 34 of the bearing 30 is received in a complementary recess 122 formed by the sleeve 120. In an alternative configuration not shown, a mirror image is of course conceivable, the sleeve 120 being received in a complementary recess formed by the bearing 30.

[0040] The sleeve 120 is partially received in the cavity VI14 and cooperates, notably through complementary shapes, with the shaft 114, so that the sleeve 120 is movable in translation relative to the shaft 114 along the guide axis Al 14, between: - an advanced position, in which, when the winding tube 20 is present, the bearing 30 cooperates with the sleeve 120, so that the winding tube 20 is rotationally movable relative to the sleeve around the guide axis Al 14, as illustrated in [Fig.4]#b) and [Fig.5]#b), and - a rearward position, in which the bearing 30 no longer cooperates with the sleeve 120, the tube 20 being able to be extracted from the chest 18, as illustrated in [Fig.6]#b) and [Fig.7]#b).

[0041] Advantageously, the sleeve 120 is configured to cooperate, in particular by complementary shapes, with the shaft 114, so that the sleeve 120 is mobile in rotation relative to the shaft 114 around the guide axis Al 14. In the illustrated example, the sleeve 120 and the shaft 114 each have a cylindrical shape with a circular cross-section centered on the guide axis Al 14.

[0042] The fastening portion 110 also includes control means, which are actuable by a user so as to move the sleeve 120 between the forward position and the rearward position.

[0043] In the illustrated example, the control means comprise an actuating rod 142, which is integral with the sleeve 120 and passes through the slot 116. The rod 142 includes a handle 144 that can be operated by a user, such that when the rod 142 moves through the slot 116, the sleeve 120 moves between the forward and rearward positions. More precisely, when the rod 142 moves through the slot 116, the movement of the sleeve 120 relative to the shaft 114 is a helical movement, combining rotation about the guide axis Al 14 and translation along the guide axis Al 14. Thus, by extension, the slot 116 is also part of the control means.

[0044] Advantageously, the bearing support 100 also includes indexing means, which are actuable by the operator and which are designed to selectively lock the sleeve 120 in the forward or backward position.

[0045] In the illustrated example, the indexing means include, in addition to the indexing holes 118A / 118B, at least one additional hole 128, which is provided in the sleeve 120, the additional hole 128 being aligned with each indexing hole 118A / 118B when the sleeve is in the forward position and / or in the rearward position.

[0046] The indexing means also include a stop piece 152, which is configured to be received jointly in the complementary hole 128 and in the indexing hole 118A or 118B opposite, so as to prevent movement of the sleeve 120 relative to the barrel 114.

[0047] In the illustrated example, the rod 142 comprises a second end 146, which is arranged opposite the handle 144 and passes through the additional hole 128. The rod 142 is arranged radially to the guide axis A14 and extends along a sliding axis A142. The rod 142 is movable in translation relative to the sleeve 120 along the sliding axis A142, between: - a locked position, in which the second end 146 protrudes from the additional hole 128 and is suitable for being received in the opposite indexing hole 118A / 118B when the sleeve 120 is in the advanced and / or retracted position, preventing movement of the sleeve 120 relative to the barrel 114, the second end 146 of the rod 142 forming the stop piece 152, and - an unlocked position, in which, while the sleeve 120 is in the forward and / or rearward position, the second end 146 is not received in the opposite indexing hole 118A / 118B and does not prevent the movements of the sleeve 120 relative to the barrel 114.

[0048] Advantageously, the indexing means also include a return spring 154, which is configured to return the rod 142 from the unlocked position to the locked position. In the illustrated example, the return spring 154 is arranged around the rod 142, coaxially with the sliding axis A142.

[0049] The use of the bearing support 100 is now described, in particular a disassembly sequence for the tube 20, with reference to Figures 4 to 7. In [Fig. 4], the bearing support 100 is initially in an "advanced-locked" configuration, i.e., the sleeve 120 is in the advanced position, and the rod 142 is in the locked position. The bearing 30 is supported by the sleeve 120, the second end 146 of the rod 142 being received in the indexing hole 118A. Rotation of the sleeve 120 relative to the barrel 114 is prevented.

[0050] Next, the user pulls on the handle 144, so as to move the handle 144 away from the guide shaft Al 14, the rod 142 slides from the locked position to the unlocked position, until the second end 146 of the rod 142 is no longer received in indexing hole 118A. Bearing support 100 is then in an "advanced-unlocked" configuration, as illustrated in [Fig.5], sleeve 120 being in the advanced position, and rod 142 is in the unlocked position.

[0051] It is understood that if the user releases the handle 144, then the rod 142 returns to the locked position under the effect of the return spring 154.

[0052] Starting from the configuration of [Fig. 5], the user can move the rod 142 through the slot 116, thus gradually moving the sleeve 120 from the forward position to the rearward position. During this movement, the user can release the handle 144, at which point the second end 146 of the rod 142 comes to rest against the groove 119 and moves within the groove 119, which does not prevent the movement from continuing from the forward position to the rearward position.

[0053] The movement continues until the bearing support 100 is in the configuration shown in [Fig. 6], where the sleeve 120 is in the retracted position and the rod 142 is in the unlocked position. The bearing support 100 is then in a "retracted-unlocked" configuration. The end 146 of the rod 142 is then aligned with the indexing hole 118B, but is not yet engaged with it. Since the bearing 30 is no longer cooperating with the sleeve 120, the user is free to extract the tube 20 from the housing 18.

[0054] From the configuration of [Fig.6], if the user releases the handle 144, then the rod 142 returns to the locked position under the effect of the return spring 154, the end 146 of the rod 142 is then opposite the indexing hole 118B. The bearing support 100 is then in a "retracted - locked" configuration, as illustrated in [Fig.7].

[0055] To mount the tube 20, the user places the tube 20 in the housing 18, with the bearing 30 aligned with the sleeve 120, and the bearing support 100 initially in the retracted-locked position. The user then performs the steps described above, in reverse order: pull the handle 144 to move the rod 142 into the unlocked position, move the rod 142 through the slot 116 to move the sleeve 120 from the retracted position to the forward position, and then release the handle 144 to allow the spring 154 to return the rod to the locked position.

[0056] In the illustrated embodiment, the control means are formed by the rod, which travels in the slot 116 inclined with respect to the guide axis Al 14, so as to move the sleeve 120 between the forward position and the rearward position.

[0057] Other variations are of course possible. According to a first example not shown, the control means consist of a handle pivoting about an axis of rotation radial to the guide axis, an eccentric cam being arranged to push the sleeve towards the forward position. A return mechanism is advantageously provided to pull the sleeve back into the retracted position. Alternatively, the user must push the sleeve back into the retracted position using a tool such as a screwdriver.

[0058] According to a second example, a mirror configuration is of course possible, the return element being designed to push the sleeve back to the forward position, while the pivoting handle and the eccentric cam are arranged to move the sleeve to the rearward position. According to a third example, the control means are a worm gear device. According to still other variants, the control means are implemented with a cam system or a pull-rod system.

[0059] In the illustrated example, the shaft 114 and the sleeve 120 each have a cylindrical shape with a circular cross-section, the control means being based here on the circulation of the rod 142 in the inclined light 116, the movement of the sleeve 120 relative to the shaft 114 being here a helical movement, combining rotation around the guide axis Al 14 and translation along the guide axis Al 14.

[0060] In an alternative not shown, when the control means do not require the sleeve 120 to be mobile in rotation relative to the shaft 114 around the guide axis Al 14, the sleeve 120 and the shaft 114 have a cylindrical shape with a non-circular cross-section, for example a polygonal cross-section, which allows translational movements between the forward position and the rearward position, while preventing rotational movements.

[0061] In the illustrated embodiment, the indexing means are provided by the second end of the rod, which extends from the sleeve opposite the handle and forms an indexing pin. The return spring is provided to return the rod to the locked position.

[0062] Other variants are of course possible. According to a first example not illustrated, the indexing pin is a stop piece which is separate from the rod, for example a pin, or a screw or equivalent, the stop piece being put in place by the user so as to prevent movement of the sleeve relative to the barrel.

[0063] The embodiments and variants mentioned above can be combined with each other to generate new embodiments of the invention.

Claims

1.

2. Demands Bearing support (100) for a winding tube (20) of a roller shutter installation (10), the bearing support (100) comprising: • a fixing portion (110), which includes: • a plate (112), which is configured to be attached to a box (18) of the installation (10), the plate (112) defining a first plane (PI), • a shaft (114), which extends from the plate (112), which has the shape of a hollow cylinder extending along a guide axis (Al 14) orthogonal to the foreground (PI), the shaft (114) delimiting a cavity (VI14), • a sleeve (120), which is configured to cooperate, in particular by complementary shapes, with a bearing (30) of the winding tube (20), so that the winding tube (20) is rotationally movable relative to the sleeve (120) about the guide axis (Al 14), the sleeve (120) being at least partially received in the cavity (V114) and being translationally movable relative to the barrel (114) about the guide axis (Al 14), between: • an advanced position, in which, when the winding tube (20) is present, the bearing (30) cooperates with the sleeve (120), so that the winding tube (20) is movable in rotation relative to the sleeve (120) around the guide axis (Al 14), and • a retracted position, in which the bearing (30) does not cooperate with the sleeve (120), the winding tube (20) being able to be extracted from the casing (18), • control means, which can be operated by a user so as to move the sleeve (120) between the forward position and the rearward position. Bearing support (100) according to claim 1, wherein: • The means of control include: • a light (116), which is provided through the shaft (114) radially to the guide axis (Al 14) and which has an elongated shape extending along a path inclined with respect to the guide axis (Al 14), • an actuating rod (142), which is integral with the sleeve (120) and which passes through the light (116), the rod (142) comprising a handle (144) actuable by a user, so that when the rod (142) travels in the light (116), the sleeve (120) moves between the forward position and the rearward position.

3. Bearing support (100) according to any one of claims 1 or 2, wherein: • the bearing support (100) also includes indexing means, which are actuable by the operator and which are provided to selectively lock the sleeve (120) in the forward and / or rearward position.

4. Bearing support (100) according to claim 3, wherein: • the indexing means comprise: • at least one indexing hole (118A, 118B), which is provided through the shaft (114) radially to the guide axis (Al 14), • a supplementary hole (128), which is provided in the sleeve (120), the supplementary hole (128) being aligned with each indexing hole (118A, 118B) when the sleeve (120) is in the advanced position and / or in the retracted position, • a stop piece (152), which is configured to be received jointly in the supplementary hole (128) and in the indexing hole (118A, 118B) opposite, so as to prevent movement of the sleeve (120) relative to the shaft (114).

5. Bearing support (100) according to claims 2 and 4 taken in combination, wherein: • The rod (142) includes a second end (146), which is arranged opposite the handle (144) and passes through the additional hole (128). • The rod (142) is movable in translation relative to the sleeve (120) along a sliding axis (A 142) that is radial to the guide axis (A1 14), between: • a locked position, in which the second end (146) protrudes from the additional hole (128) and is able to be received in the indexing hole (118A, 118B) opposite it when the sleeve (120) is in the forward or retracted position, preventing movement of the sleeve (120) relative to the barrel (114), the second end (146) of the rod (142) forming the stop piece (152), • an unlocked position, in which, when the sleeve (120) is in the forward and / or retracted position retracted, the second end (146) is not received in the indexing hole (118A,118B) opposite and does not impede the movements of the sleeve (120) relative to the barrel (114).

6. Bearing support (100) according to claim 5, wherein: • the indexing means also include a return spring (154), which is configured to return the rod (142) from the unlocked position to the locked position.

7. A roller shutter installation (10), comprising: • a roller shutter box (18), which delimits an internal volume (VI8) and is fixed to a wall (12) above an opening (14) in the wall (12), • a bearing support (100) conforming to any one of claims 1 to 6, wherein: the fixing portion (110) is received in the internal volume (VI8), the fixing portion (110) being secured to the case (18). 14

8. Installation (10) of roller shutter according to claim 7, comprising: • a winding tube (20), which includes two opposite ends, each of which is provided with a respective bearing (30), the winding tube (20) being received in the internal volume (VI8), one of the two bearings (30) being supported by the bearing support (100).

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