EP3835538A1 - Electromechanical actuator comprising a suspension element and closing or sun-protection system including such an electromechanical actuator - Google Patents

Abstract

An electromechanical actuator of a closing or sun protection installation comprises at least one suspension member (12) and a casing. The suspension member (12) is configured to be mounted inside the housing of the electromechanical actuator, the suspension member (12) being annular in shape and defining a volume (012) for receiving a part. of the electromechanical actuator. The suspension member (12) comprises at least three springs (24) and a support (14), on which each spring (24) is mounted. The support (14) is cylindrical in shape and includes a hub (16). The hub (16) is provided with at least three housings (22) for each accommodating a spring (24), so that each spring (24) protrudes from an outer peripheral surface (S18, S20) of the support ( 14).

Description

The present invention relates to an electromechanical actuator comprising a suspension member, as well as to a closing or sun protection installation comprising such an electromechanical actuator.

In general, the present invention relates to the field of concealment devices comprising a motorized drive device setting a screen in motion, between at least a first position and at least a second position.

A motorized drive device comprises an electromechanical actuator of a movable closing, concealment or sun protection element, such as a shutter, a door, a grid, a blind or any other equivalent material, called hereafter screen.

It is known to manufacture electromechanical actuators for concealment devices which each comprise an electric motor, a reduction gear and a control unit. In order to fix the electric motor and the reducer in the electromechanical actuator, it is known to use Oldham gaskets. However, when the electromechanical actuator is placed, for example, in a winding tube of the blanking device, the electric motor and the reducer tend to be driven downwards and come into contact with a housing of the. electromechanical actuator.

To overcome this problem, it is known practice to place polymer suspension members on the electric motor and / or on the gearbox. These suspension members make it possible to hold the electric motor and the reduction gear in place by leaning on the casing. However, this material degrades over time and does not withstand the high or low temperatures to which the electromechanical actuator may be subjected.

It is to this drawback that the invention more particularly intends to remedy by proposing an improved suspension member for an electromechanical actuator of a closing or sun protection installation, this suspension member being more durable than those of the prior art. .

We also know the document DE 20 2017 100 632 U1 which describes an electromechanical actuator of a closing or sun protection installation. The electromechanical actuator comprises one or two suspension members and a housing. The suspension member is configured to be mounted inside the housing of the electromechanical actuator. The suspension member is annular in shape and defines a volume for receiving part of the electromechanical actuator. The suspension component includes at least three springs. The suspension member comprises a support, on which is connected each spring. The support is cylindrical in shape. The bracket includes a hub.

We also know the document US 2017/175819 A1 which describes a torque transfer member for an electromechanical actuator of a closing or sun protection installation. The torque transfer member is annular in shape and defines a volume for receiving part of the electromechanical actuator. The torque transfer member includes at least three springs.

We also know the document JP 2014 095 188 A which describes a torque transfer member for an electromechanical actuator of a closing installation, in particular against fire, or for solar protection. The torque transfer member is annular in shape and defines a volume for receiving an output shaft of a reduction gear of the electromechanical actuator. The torque transfer member comprises portions, in this case four, configured to be compressed, during the insertion of the electromechanical actuator inside the winding tube.

To this end, the present invention relates, according to a first aspect, to an electromechanical actuator of a closing or solar protection installation, the electromechanical actuator comprising at least one suspension member and a housing, the suspension member being configured. to be mounted inside the casing of the electromechanical actuator, the suspension member being annular in shape and defining a volume for receiving part of the electromechanical actuator, the suspension member comprising at least three springs and a support, on which is mounted each spring, the support being cylindrical in shape, the support comprising a hub.

According to the invention, the hub is provided with at least three housings for each receiving a spring, so that each spring protrudes from an outer peripheral surface of the support.

Thanks to the invention, the springs present in the suspension member make it possible to hold part of the electromechanical actuator, in particular the electric motor and / or the reduction gear, in place within the housing of the electromechanical actuator, while by guaranteeing a long service life for the suspension member.

• Les logements sont au nombre de trois répartis régulièrement autour du moyeu, de sorte que des angles entre des droites passant par le centre de chaque logement et le centre du moyeu soient égaux à 120°.
• Le support comprend au moins une collerette cylindrique de diamètre externe supérieur au diamètre externe du moyeu et chaque ressort dépasse d'une surface périphérique externe de la collerette qui forme la surface périphérique externe du support.
• Chaque ressort comprend un crochet en forme de « C » et une patte configurée pour être insérée dans une encoche débouchante de l'un des logements du moyeu.
• Chaque ressort est métallique, de préférence en acier.
• L'actionneur électromécanique comprend, en outre, un moteur électrique et un réducteur. Le moteur électrique, le réducteur et l'organe de suspension sont montés à l'intérieur du carter. En outre, l'organe de suspension est monté sur le moteur électrique ou sur le réducteur.
• Le moteur électrique et le réducteur sont montés à l'intérieur du carter au moyen de deux organes de filtrage des vibrations, autrement dit de découplage vibratoire.

According to advantageous but not mandatory aspects of the invention, such an electromechanical actuator comprises one or more of the following characteristics, taken in any technically admissible combination:

• There are three housings distributed regularly around the hub, so that the angles between straight lines passing through the center of each housing and the center of the hub are equal to 120 °.
• The support comprises at least one cylindrical flange with an outer diameter greater than the outer diameter of the hub and each spring protrudes from an outer peripheral surface of the flange which forms the outer peripheral surface of the support.
• Each spring includes a "C" shaped hook and a tab configured to be inserted into a notch emerging from one of the hub housings.
• Each spring is metallic, preferably steel.
• The electromechanical actuator further comprises an electric motor and a reduction gear. The electric motor, the reducer and the suspension member are mounted inside the housing. In addition, the suspension member is mounted on the electric motor or on the reduction gear.
• The electric motor and the reducer are mounted inside the casing by means of two vibration filtering members, in other words vibratory decoupling.

The present invention relates, according to a second aspect, to a closing or solar protection installation comprising a screen driven in movement by an electromechanical actuator and, more particularly, which can be wound on a winding tube driven in rotation by an electromechanical actuator.

According to the invention, the electromechanical actuator is in accordance with the invention, as mentioned above.

This closing or solar protection installation induces the same advantages as those mentioned above with regard to the suspension member.

• [Fig 1] la figure 1 est une vue schématique en perspective partielle d'une installation de protection solaire conforme à l'invention ;
• [Fig 2] la figure 2 est une vue schématique en perspective d'un organe de suspension conforme à l'invention, utilisé dans un actionneur électromécanique de l'installation illustrée à la figure 1 ;
• [Fig 3] la figure 3 est une vue en coupe selon le plan III de la figure 2 ; et
• [Fig 4] la figure 4 est une vue schématique en perspective éclatée, selon le même angle que celui de la figure 2, de l'organe de suspension illustré aux figures 2 et 3.

The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description of an embodiment of a suspension member, of an electromechanical actuator and of an installation. closure or sun protection in accordance with its principle, given only by way of example and made with reference to the drawings, in which:

• [ Fig 1 ] the figure 1 is a schematic partial perspective view of a solar protection installation according to the invention;
• [ Fig 2 ] the figure 2 is a schematic perspective view of a suspension member according to the invention, used in an electromechanical actuator of the installation illustrated in figure 1 ;
• [ Fig 3 ] the figure 3 is a sectional view along plane III of the figure 2 ; and
• [ Fig 4 ] the figure 4 is a schematic exploded perspective view, taken from the same angle as that of the figure 2 , of the suspension member shown in figures 2 and 3 .

We first describe, with reference to the figure 1 , an installation I in accordance with one embodiment of the invention and installed in a building comprising an opening O, window or door, equipped with a screen 1 belonging to a closing, blackout or sun protection device, in particular a motorized roller blind.

The closing, concealment or sun protection device is hereinafter referred to as a “concealment device”. The concealment device includes screen 1.

The concealment device can be a fabric blind, which can be rolled up or pleated, or with adjustable slats, a rolling shutter or even a rolling gate. The present invention applies to all types of concealment device.

Here, the installation I includes the concealment device.

We describe, with reference to figure 1 , a roller blind according to one embodiment of the invention.

Here, the installation I is of the type of solar protection, comprising the roller blind provided with the screen 1 driven by a winding tube 2. To facilitate understanding of the invention, the screen 1 and the tube winding 2 are shown, on the figure 1 , in centerlines and are transparent.

The concealment device comprises a winding tube 2 and a motorized drive device. The motorized drive device comprises an electromechanical actuator 3.

The screen 1 is wound on the winding tube 2 driven by the motorized drive device.

Thus, the screen 1 is movable between a rolled-up position, in particular high, and an unrolled position, in particular low.

The screen 1 is a closing, concealing and / or sun protection screen, winding and unwinding around the winding tube 2, the internal diameter of which is appreciably greater than the external diameter of the electromechanical actuator 3 , so that the electromechanical actuator 3 can be inserted into the winding tube 2 when assembling the concealment device.

Advantageously, the concealment device comprises a holding device, not shown.

Advantageously, the holding device can comprise two supports. A support is disposed at each end of the winding tube 2, in an assembled configuration of the concealment device.

Thus, the winding tube 2 is held by means of the supports. The supports make it possible to mechanically link the concealment device to the structure of the building, in particular to a wall of the building.

Advantageously, the holding device can comprise a box. In addition, the winding tube 2 and at least part of the screen 1 are housed inside the box, in the assembled configuration of the concealment device.

In general, the box is arranged above the opening O, or else in the upper part of the opening O.

Advantageously, the supports are also housed inside the box.

As a variant, not shown, the winding tube 2 is held by means of the box, in particular by the intermediary of the cheeks of the box, without using supports, such as the supports mentioned above.

Advantageously, the concealment device can also include two side slides, not shown. Each side slide includes a groove. Each groove of one of the lateral slides cooperates, in other words is configured to cooperate, with a lateral edge of the screen 1, in the assembled configuration of the concealment device, so as to guide the screen 1, during the winding and unwinding of the screen 1 around the winding tube 2.

The electromechanical actuator 3 is, for example, of the tubular type. This allows the winding tube 2 to be rotated around an axis of rotation X, so as to unwind or wind the screen 1.

Thus, the screen 1 can be rolled up and unwound on the winding tube 2. In the mounted state, the electromechanical actuator 3 is inserted into the winding tube 2.

Advantageously, the concealment device further comprises a load bar, not shown, for exerting tension on the screen 1.

The roller blind, which forms the blackout device, comprises a canvas, forming the screen 1. A first end of the screen 1, in particular the upper end of the screen 1, in the assembled configuration of the device. The shielding is attached to the winding tube 2. Further, a second end of the shield 1, in particular the lower end of the shield 1, in the assembled configuration of the shielding device, is attached to the shield. load bar.

Here, the canvas forming the screen 1 is made from a textile material.

In the case of a roll-up blind, the rolled up upper position corresponds to a predetermined upper end-of-travel position, or to the placing of the load bar of the screen 1 against an edge of a box of the blind. roll-up, and the unwound lower position corresponds to a predetermined lower end-of-travel position, or to the placing of the load bar of the screen 1 against a threshold of the opening O, or even to the complete unwinding of the 'screen 1.

Advantageously, the motorized drive device is controlled by a control unit, not shown. The control unit can be, for example, a local control unit or a central control unit.

Advantageously, the local control unit can be connected, in a wired or wireless link, with the central control unit.

Advantageously, the central control unit can control the local control unit, as well as other similar local control units distributed in the building.

The motorized drive device is preferably configured to execute the unwinding or winding commands of the screen 1, which can be emitted, in particular, by the local or central control unit.

Installation I comprises either the local control unit, or the central control unit, or the local control unit and the central control unit.

The electromechanical actuator 3 comprises an electric motor 53.

Means for controlling the electromechanical actuator 3, allowing the screen 1 to be moved, comprise at least one control unit 6, in particular an electronic control unit. This control unit 6 is able to start the electric motor 53 and, in particular, to allow the supply of electric energy to the electric motor 53.

Thus, the control unit 6 controls, in particular, the electric motor 53, so as to open or close the screen 1, as described above.

The control means of the electromechanical actuator 3 comprise hardware and / or software means. By way of non-limiting example, the hardware means can comprise at least one microcontroller, not shown.

Advantageously, the control unit 6 further comprises a first communication module, not shown, in particular for receiving control orders, the control orders being sent by a command transmitter, such as the unit. local control unit or the central control unit, these orders being intended to control the motorized drive device.

Preferably, the first communication module of the control unit 6 is of the wireless type. In particular, the first communication module is configured to receive radio control commands.

Advantageously, the first communication module can also allow the reception of control commands transmitted by wired means.

Advantageously, the control unit 6, the local control unit and / or the central control unit can be in communication with a weather station, arranged inside the building or deported outside the building, including, in particular, one or more sensors that can be configured to determine, for example, a temperature, a luminosity, or even a wind speed, in the case where the weather station is deported outside the building.

Advantageously, the control unit 6, the local control unit and / or the central control unit can also be in communication with a server, not shown, so as to control the electromechanical actuator 3 according to updated data. remote provision by means of a communication network, in particular an Internet network which can be connected to the server.

The control unit 6 can be controlled from the local or central control unit. The local or central control unit is provided with a control keypad. The control keyboard of the local or central control unit comprises one or more selection elements and, optionally, one or more display elements.

By way of non-limiting examples, the selection elements may comprise push buttons and / or sensitive keys. The display elements may include light-emitting diodes and / or an LCD (acronym for the term “Liquid Crystal Display”) or TFT (acronym for the term “Thin Film Transistor”). The selection and display elements can also be achieved by means of a touch screen.

The local or central control unit comprises at least a second communication module.

Thus, the second communication module of the local or central control unit is configured to emit, in other words emits, control orders, in particular by wireless means, for example radio, or by wired means.

In addition, the second communication module of the local or central control unit can also be configured to receive, in other words receives, control orders, in particular by means of the same means.

The second communication module of the local or central control unit is configured to communicate, in other words communicates, with the first communication module of the control unit 6.

Thus, the second communication module of the local or central control unit exchanges control commands with the first communication module of the control unit 6, either unidirectionally or bidirectionally.

Advantageously, the local control unit is a control point, which can be fixed or nomadic. A fixed control point can be a control box intended to be fixed to a facade of a building wall or to a face of a fixed frame of a window or a door. A nomadic control point can be a remote control, a smartphone or a tablet.

Advantageously, the local or central control unit further comprises a controller.

The motorized drive device, in particular the control unit 6, is preferably configured to execute movement control orders, in particular for closing as well as opening, of the screen 1. These control orders can be emitted, in particular, by the local or central control unit.

The motorized drive device can be controlled by the user, for example by receiving a control command corresponding to pressing on the or one of the selection elements of the local or central control unit.

The motorized drive device can also be controlled automatically, for example by receiving a control command corresponding to at least one signal from at least one sensor and / or to a signal from a clock of the control unit 6, in particular of the microcontroller. The sensor and / or the clock can be integrated into the local or central control unit.

The electromechanical actuator 3 is supplied with electrical energy by an electrical energy supply source, not shown, which can be either a mains electricity supply network or a battery, which can be recharged, for example, by a photovoltaic panel, not shown.

Here, the electromechanical actuator 3 comprises an electric power supply cable 10 enabling it to be supplied with electric energy from the electric power supply source.

Advantageously, the electrical supply cable 10 can comprise at least one electrical connector, in particular one at each of its ends or only one at one of its ends. This electrical supply cable 10 can be, for example, a cord, in the case where the electromechanical actuator 3 is supplied with electrical energy from a mains electrical supply network, which may have, for example, a supply voltage of 110V or 230V, or a dab fitted with RJ45 type sockets (acronym for the English term "Registered Jack"), in the case where the electromechanical actuator 3 is supplied with electrical energy from an Ethernet network.

The electromechanical actuator 3 comprises a casing 4, in particular tubular. The electric motor 53 is mounted inside the housing 4, in an assembled configuration. of the electromechanical actuator 3.

To view the elements arranged inside the casing 4 of the electromechanical actuator 3 at the figure 1 , the housing 4 is shown in center lines and is transparent.

Here, the casing 4 of the electromechanical actuator 3 is of cylindrical shape, in particular of revolution.

In an exemplary embodiment, the casing 4 is made of a metallic material.

The material of the housing of the electromechanical actuator is not limiting and may be different. It may be, in particular, a plastic material.

Advantageously, the control unit 6 comprises a first electronic card, not shown, and, optionally, a second electronic card, not shown.

Advantageously, the first electronic card is configured to control the electric motor 53. In addition, the second electronic card can be configured to, in particular, allow the recharging of a battery, not shown, of the electromechanical actuator 3 and, optionally, access the parameter setting and / or configuration functions of the electromechanical actuator 3, by means of selection and, optionally, display elements, not shown.

The electromechanical actuator 3 further comprises a reduction gear 51.

Advantageously, the reducer 51 comprises at least one reduction stage. The reduction stage can be an epicyclic type gear train.

The type and number of reduction stages of the reducer are not limiting.

Here, the electric motor 53 and the reducer 51 are mounted inside a mass tube 54.

Advantageously, the electric motor 53, the reducer 51 and the control unit 6 are aligned along the axis X, which also forms a longitudinal axis of the electromechanical actuator 3.

Advantageously, the electromechanical actuator 3 further comprises an output shaft 3A.

Advantageously, the electromechanical actuator 3 further comprises a brake 52.

By way of non-limiting examples, the brake 52 can be a spring brake, a cam brake, an electromagnetic brake or a magnetic brake.

Here, in an assembled configuration of the electromechanical actuator 3, the brake 52 is configured to be disposed, in other words is disposed, between the electric motor 53 and the reducer 51, i.e. at the output of the electric motor. 53.

The reducer 5 and, optionally, the brake 52 are arranged inside the casing 4 of the electromechanical actuator 3, in the assembled configuration of the electromechanical actuator 3.

Advantageously, the electromechanical actuator 3 can also include an end-of-travel and / or obstacle detection device, which can be mechanical or electronic.

The winding tube 2 is driven in rotation around the axis of rotation X and the casing 4 of the electromechanical actuator 3 while being supported by means of two pivot links. The first pivot connection is made at a first end of the winding tube 2 by means of a ring, not shown, inserted around a first end of the casing 4 of the electromechanical actuator 3. The ring thus allows to achieve a plateau. The second pivot connection, not shown, is produced at a second end of the winding tube 2.

Advantageously, the electromechanical actuator 3 comprises a torque support 11, which may also be called “actuator head”. The torque support 11 is disposed at the first end of the housing 4, in the assembled configuration of the electromechanical actuator 3.

The torque support 11 makes it possible to ensure the absorption of the forces exerted by the electromechanical actuator 3 and, in particular, to ensure the absorption of the forces exerted by the electromechanical actuator 3, in particular the torque exerted by the electromechanical actuator 3 , by the structure of the building. The torque support 11 advantageously makes it possible to ensure, in addition, the absorption of the forces exerted by the winding tube 2, in particular the weight of the winding tube 2, of the electromechanical actuator 3 and of the screen 1, by the building structure.

Thus, the torque support 11 makes it possible to fix the electromechanical actuator 3 on the holding device, in particular to one of the supports or to one of the cheeks of the box.

Advantageously, the torque support 11 protrudes at the level of the first end of the casing 4 of the electromechanical actuator 3, in particular the end of the casing 4 receiving the ring gear. The crown constitutes, in other words is configured to constitute, a bearing for guiding in rotation of the winding tube 2, in the assembled configuration of the concealment device.

Advantageously, the torque support 11 can also make it possible to close the first end of the housing 4.

Furthermore, the torque support 11 can make it possible to support at least part of the control unit 6.

Advantageously, the control unit 6 is supplied with electrical energy by means of the electrical supply cable 10.

Advantageously, the control unit 6 is placed at least in part inside the casing 4.

Furthermore, the control unit 6 can be disposed at least in part outside the casing 4 and, in particular, mounted on one of the two supports, on one of the cheeks of the casing or in the support of the housing. couple 11.

Advantageously, the first electronic card of the control unit 6 is placed inside the casing 4. In addition, the second electronic card is placed inside the torque support 11.

Advantageously, the torque support 11 comprises a cover, not shown. In addition, the second electronic card is placed inside a housing formed between the torque support 11 and the cover.

Advantageously, the torque support 11 comprises at least one button, not shown.

This or these buttons can make it possible to adjust the electromechanical actuator 3 through one or more configuration modes, to pair with the electromechanical actuator 3 one or more control units, to reset one or more parameters, can be, for example, an end-of-travel position, to reset the paired control unit (s) or to control the movement of screen 1.

Advantageously, the torque support 11 comprises at least one display device, not shown, so as to allow a visual indication, which may be, for example, a state of charge of a battery.

Advantageously, the display device comprises at least one lighting source, not shown, in particular a light-emitting diode, mounted on the second electronic card and, optionally, a transparent or translucent cover and / or a light guide, to allow the passage of the light emitted by the lighting source.

Advantageously, the output shaft 3A is arranged inside the winding tube 2 and at least partly outside the casing 4.

Here, one end of the output shaft 3A protrudes with respect to the housing 4, in particular with respect to the second end of the housing 4 opposite to the first end.

Advantageously, the output shaft 3A is configured to drive in rotation a connecting element, not shown, connected to the winding tube 2. The connecting element is made in the form of a wheel.

When the electromechanical actuator 3 is put into operation, the electric motor 53 and the reduction gear 51 drive the output shaft 3A in rotation. In addition, the output shaft 3A drives the winding tube 2 in rotation via the connecting element.

Thus, the winding tube 2 rotates the screen 1 of the concealment device, so as to open or close the opening O.

Advantageously, the reduction gear 51 is connected to the output shaft 3A by means of a first vibration filtering member 8, in other words vibratory decoupling, in particular an Oldham seal. This vibration filtering member 8 makes it possible to accept, during assembly and operation of the electromechanical actuator 3, a misalignment between the output shaft 3A and the reduction gear 51. In addition, the electric motor 53 is connected to the support. torque 11 via a second vibration filtering member 8, in other words vibratory decoupling, in particular an Oldham joint, with the same effect between the electric motor 53 and the torque support 11 as between the reduction gear 51 and the output shaft 3A. The second vibration filtering member 8 is connected to a torque transmission member 9, which is connected to the torque support 11.

An assembly 5 formed by the electric motor 53 and the reduction gear 51 is therefore mounted, in the electromechanical actuator 3, by means of two vibration filtering members 8. This assembly 5 is commonly called a “geared motor”. Furthermore, the electric motor 53 is electrically connected to the control unit 6, in particular by means of connection elements and / or supply wires. The assembly 5 may also include the brake 52 depending on the assembly configuration of the electromechanical actuator 3. Likewise, the assembly 5 may also include the mass tube 54 depending on the assembly configuration of the. electromechanical actuator 3.

When the assembly 5, formed by the electric motor 53 and the reduction gear 51, is mounted in the electromechanical actuator 3, this assembly 5, due to its connection with the two vibration filtering members 8, tends to fall, under the effect of its weight, and to come into contact with the casing 4. This induces a transmission of vibrations from this assembly 5 to the casing 4, during an electrical activation of the electric motor 53, therefore noise pollution during operation. operation of the electromechanical actuator 3. In order to avoid this, two suspension members 12 are mounted at both ends of this assembly 5 inside the casing 4 and, more particularly, on the one hand, around the electric motor 53 and, on the other hand, around the reducer 51.

Here, the two suspension members 12 are identical.

One of the suspension members 12 is shown alone on the figures 2 to 4 . The suspension member 12 comprises a support 14, preferably of synthetic material, in particular of polyamide. An envelope of this support 14 forms a cylinder of revolution, with a circular base, centered on an axis X12 which coincides with the axis X in the mounted configuration of the suspension member 12 in the electromechanical actuator 3 and therefore in installation I. The support 14 is composed of a hub 16 and a flange 18, external with respect to the hub 16. The support 14 is in one piece.

The hub 16 defines an outer peripheral surface S16 which is circular and centered on the axis X12. The diameter of the outer peripheral surface S16 is denoted D16.

The flange 18 is a cylinder of revolution with a circular base, the external diameter D18 of which is greater than the external diameter D16 of the hub 16 and less than the internal diameter d4 of the housing 4.

The hub 16 defines a central orifice O12 of the suspension member 12. This central orifice O12, centered on the axis X12, is a volume for receiving a part of the electromechanical actuator 3, in particular of the electric motor 53 or of the reducer 51, since the electric motor 53 or the reducer 51 is mounted in one of the suspension members 12. We denote s16 the internal radial surface of the hub 16 which defines the periphery of the central orifice O12 which, in this example, is circular and centered on the X12 axis. The outer peripheral surface S18 of the flange 18 is also circular and centered on the axis X12. The internal radial surface s18 of the flange 18 has the same geometry as the internal radial surface s16 of the hub 16.

A flange 20 in the form of a circular ring is attached and immobilized on the support 14, for example glued or fixed by screws not shown. The outer peripheral surface S20 of the flange 20 has the same geometry as the peripheral surface S18 of the flange 18. The inner radial surface s20 of the flange 20 has the same geometry as the inner radial surface s16 of the hub 16.

An assembly, formed of the hub 16, the flange 18 and the puddle 20 mounted on the hub 16, in other words on the support 14, fits into a circular envelope centered on the axis X12 and defined radially between, of a on the one hand, the surfaces s16, s18 and s20 and, on the other hand, the surfaces S16, S18 and S20.

Thus, the suspension member 12 shown in figures 1 to 4 is an annular and, more particularly, circular suspension member.

The hub 16 comprises three housings 22. The housings 22 are distributed regularly around the periphery of the hub 16, so that an angle a, measured radially to the axis X12, between straight lines D22 passing through the center of two housings 22 is equal to 120 °.

Three springs 24 are mounted on the support 14, each spring 24 being accommodated in one of the housings 22.

Here, the springs 24 can be metallic.

Each spring 24 bears against the collar 18 on a first axial side and against the flange 20 on a second axial side opposite to the first axial side.

Thus, the springs 24 cannot move along the axis X12, relative to the hub 16, in other words to the support 14.

Advantageously, the hub 16 is provided with three notches 28, each opening into a housing 22, for the insertion of part of a spring 24.

Each spring 24 includes a hook 24a.

Thus, when the hooks 24a are received in the housings 22, they protrude from the outer peripheral surface S16 of the hub 16 and from the outer peripheral surfaces S18, S20 of the flange 18 and of the flange 20, radially outwardly relative to the 'X12 axis.

Each hook 24a is "C" shaped.

Advantageously, each spring 24 further comprises a tab 24b for retaining the spring 24 in the support 14. The tab 24b of each spring 24 extends the hook 24a corresponding to one of its ends. Each tab 24b is designed to be inserted into one of the notches 28 of the hub 16.

Preferably, each spring 24 is made of steel.

For mounting the suspension member 12 on the electromechanical actuator 3, each spring 24 is first of all placed in the support 14, by inserting each tab 24b into the corresponding notch 28, so that each hook 24a is located in the corresponding housing 22. Following this, the flange 20 is put in place and immobilized on the hub 16 to keep the springs 24 in position in the support 14 and, consequently, in the suspension member 12.

The suspension member 12 is then mounted on the electric motor 53 or on the reducer 51, by engaging a part of the electric motor 53 or of the reducer 51 in the orifice O12 of the suspension member 12. When the assembly 5 , provided with the suspension members 12 is inserted and then enclosed in the casing 4, the hooks 24a of the springs 24 are in contact with an internal surface of the casing 4.

Advantageously, the mounting of the suspension member 12 on the electric motor 53 or on the reduction gear 51 is carried out by means of a bearing, not shown. The bearing can be mounted either directly on the electric motor 53 or on the reduction gear 51 or on the mass tube 54 belonging to the assembly 5.

In addition, the flange 18 and the flange 20 are, due to their diameter D18, D20, at a radial distance, which may be, for example, between 0.5mm and 1mm, from the internal surface of the housing 4. Preferably , the radial distance between the internal surface of the casing 4 and the surfaces S18, S20 of the flange 18 and of the flange 20 is equal to 1mm.

Thus, during operation of the electromechanical actuator 3, the vibrations of the assembly 5 are filtered by the springs 24, without the collar 18 or the flange 20 does not come into contact with the casing 4. This makes it possible to limit the noise produced by the electromechanical actuator 3 when the electric motor 53 is electrically activated.

In addition, this radial distance being relatively small, this allows, during an impact, for example if the electromechanical actuator 3 falls during handling during manufacture, transport or during installation on the device. concealment, not to over-strain the springs 24 by bringing the collar 18 and / or the flange 20 into contact with the casing 4.

Thus, in the event of movement of too great an amplitude, the springs 24 are not damaged.

The invention is described above in the context of a solar protection installation. It can also be implemented within the framework of a closing or concealment installation, where the screen 1 performs a function of closing the opening O. In this case, the screen 1 can be, for example example, a grid or an assembly of hinged slats.

As a variant, not shown, the number of springs 24 is different, for example equal to four or seven. In this case, the number of housings 22 formed in the hub 16 is also different to correspond to the number of springs 24 and the angle. α between the straight lines D22 defined by the different adjacent housings 22 is adapted to correspond to the number of housings 22.

As a variant, not shown, the support 14 is molded directly onto the springs 24, so that the support 14 forms a single part.

According to another variant, not shown, the hub 16, the flange 18 and the flange 20 may be separate parts from one another or even be formed from a single part.

According to another variant, the diameters of the peripheral surfaces S18, S20 of the collar 18 and of the flange 20 are different. In this case, only one of these surfaces S18, S20, namely that of the largest diameter, serves for centering the suspension member 12 in the casing 4 and comes into contact with its internal surface in the event of an impact.

As a variant, not shown, the assembly formed by the support 14 and the flange 20 fits into an envelope of different geometry, for example in a cylindrical envelope with a polygonal base.

According to another variant not shown, the suspension member 12 is made in one piece from a steel sheet in which tabs are cut to form the springs 24. The two ends of the sheet are then joined together, for example by welding them to form the suspension member 12.

As a variant, not shown, the electromechanical actuator 3 is inserted into a rail, in particular of square or rectangular section, which can be opened at one or both ends, in the assembled configuration of the concealment device. Furthermore, the electromechanical actuator 3 can be configured to drive a drive shaft on which the movement and / or orientation cords of the screen 1 are wound.

Alternatively, not shown, in the assembled configuration of the electromechanical actuator 3, the brake 52 is configured to be arranged, in other words is arranged, between the reducer 51 and the output shaft 3A, in other words at the output of the reducer. 51, or between two reduction stages of the reducer 51, or between the control unit 6 and the electric motor 53, in other words at the input of the electric motor 53, in the latter case the brake 52 is an electromagnetic brake.

In a variant not shown, the vibration filtering member 8 may be similar to that described in the application. WO 2018/104488 A1 .

As a variant, not shown, the springs 24 further include damping elements. Thus, during operation of the electromechanical actuator 3, the vibrations of the assembly 5 are damped by the damping elements of the springs 24. These damping elements can be, for example, elastomer elements, which can be arranged. inside or outside the springs 24.

Alternatively, the springs 24 can be made of a plastic material. This plastic material for the springs 24 can be chosen, for example, from the following families of materials: polyoxymethylene, commonly designated by the acronym POM, polyamide, commonly designated by the acronym PA, or polyethylene, commonly designated by the acronym PE, with or without load presence.

The embodiment and the variants mentioned above can be combined with one another to generate new embodiments without departing from the scope of the invention defined by the claims.

Claims (8)

Electromechanical actuator (3) of a closing or sun protection installation (I),
the electromechanical actuator (3) comprising: - at least one suspension member (12), and - a housing (4), the suspension member (12) being configured to be mounted inside the housing (4) of the electromechanical actuator (3),
the suspension member (12) being of annular shape and defining a volume (O12) for receiving a part (51, 53) of the electromechanical actuator (3),
the suspension member (12) comprising: - at least three springs (24), and - a support (14), on which is mounted each spring (24), the support (14) being of cylindrical shape,
the support (14) comprising a hub (16),
characterized in that the hub (16) is provided with at least three housings (22) for each accommodating a spring (24), so that each spring (24) protrudes from an outer peripheral surface (S18, S20 ) of the support (14). Electromechanical actuator (3) of a closing or sun protection installation (I) according to Claim 1, characterized in that the housings (22) are three in number distributed regularly around the hub (16), so that angles (a) between straight lines (D22) passing through the center of each housing (22) and the center of the hub (16) are equal to 120 °. Electromechanical actuator (3) of a closing or sun protection installation (I) according to Claim 1 or according to Claim 2, characterized in that the support (14) comprises at least one cylindrical collar (18) of external diameter ( D18) greater than the outer diameter (D16) of the hub (16) and in that each spring (24) protrudes from an outer peripheral surface (S18) of the flange (18) which forms the outer peripheral surface of the support (14) . Electromechanical actuator (3) of a closing or sun protection installation (I) according to any one of claims 1 to 3, characterized in that each spring (24) comprises a hook (24a) in the shape of a "C" and a leg (24b) configured to be inserted into a notch (28) emerging from one of the housings (22) of the hub (16). Electromechanical actuator (3) of a closing or sun protection installation (I) according to any one of claims 1 to 4, characterized in that each spring (24) is metallic, preferably steel. Electromechanical actuator (3) of a closing or sun protection installation (I) according to any one of Claims 1 to 5, characterized
in that the electromechanical actuator (3) further comprises an electric motor (53) and a reduction gear (51),
in that the electric motor (53), the reducer (51) and the suspension member (12) are mounted inside the housing (4),
and in that the suspension member (12) is mounted on the electric motor (53) or on the reduction gear (51). Electromechanical actuator (3) of a closing or sun protection installation (I) according to Claim 6, characterized in that the electric motor (53) and the reduction gear (51) are mounted inside the housing (4) by means of two vibration filtering members (8). Installation (I) for closing or sun protection comprising a screen (1) driven in movement by an electromechanical actuator (3), characterized in that the electromechanical actuator (3) conforms to any one of claims 1 to 7 .

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