Electromechanical actuator of a concealment device and concealment device comprising such an electromechanical actuator

Abstract

Electromechanical actuator of a concealment device and concealment device comprising such an electromechanical actuator An electromechanical actuator (11) comprises an electric motor, a first transmission shaft (41), a second transmission shaft (42), a coupling member (40a, 40b) and a counting device (32a, 32b). The first shaft (41) is rotated by the motor. The coupling member (40a, 40b) mechanically connects the first shaft (41) to the second shaft (42). The counting device (32a, 32b) comprises an encoder wheel (43) and at least one sensor (44) for detecting the position of the wheel (43). The coupling member (40a, 40b) comprises a bore (46), in which the first and second shafts (41, 42) are fitted, and a groove (47), in which the wheel (43) is fitted.Further, the wheel (43) is held within the groove (46) by clamping an outer surface (43a) of the wheel (43) against a first surface (47a) of the groove (47). Figure for abstract: Figure 5.

Description

Title of the invention: Electromechanical actuator of a concealment device and concealment device comprising such an electromechanical actuator

[0001] The present invention relates to an electromechanical actuator of a concealment device, in other words an electromechanical actuator for a concealment device.

[0002] The present invention also relates to a concealment device comprising a screen driven in movement by such an electromechanical actuator.

[0003] Generally speaking, the present invention relates to the field of occultation devices comprising a motorized drive device setting a screen in motion, between at least a first position and at least a second position and, optionally, between at least a third and at least a fourth position.

[0004] And, more particularly, the present invention relates to the field of occultation devices comprising at least one screen, a first movable bar, a second movable bar and a motorized drive device. In an assembled configuration of the occultation device, the first movable bar is disposed between an upper portion of a window or door and the second movable bar. The second movable bar is disposed between the first movable bar and a lower portion of the window or door. The screen is disposed between the first and second movable bars. The screen is configured to be driven into movement by the motorized drive device.The motorized drive device sets in motion, on the one hand, the first movable bar connected to the screen, between at least a first position and at least a second position, and, on the other hand, the second movable bar connected to the screen, between at least a third position and at least a fourth position.

[0005] A motorized drive device comprises an electromechanical actuator of a mobile occultation or solar protection element, such as a blind or any other equivalent material, hereinafter called a screen.

[0006] Electromechanical actuators of a concealment device are already known, comprising an electric motor, a first transmission shaft, a second transmission shaft, a coupling member and a counting device. The first transmission shaft is rotated by the electric motor. The coupling member mechanically connects the first transmission shaft to the second transmission shaft. The coupling member comprises a first end and a second end. The second end is opposite the first end. The counting device is of the magnetic type. The counting device comprises a code wheel and a plurality of sensors for detecting the position of the code wheel. The code wheel is magnetic. The code wheel comprises an outer surface and an inner surface. The coupling member comprises a bore and a groove. The bore opens at each of the first and second ends of the coupling member. The first transmission shaft is sleeved in the bore at the first end of the coupling member and the second transmission shaft is sleeved in the bore at the second end of the coupling member. The code wheel is sleeved inside the groove. The groove comprises a first surface and a second surface. Furthermore, the first surface is larger than the second surface.

[0007] However, these electromechanical actuators have the disadvantage of holding the encoder wheel inside the groove by clamping the inner surface of the encoder wheel against the second surface of the groove. Furthermore, the second surface of the groove defines an outer surface of a barrel inside which the bore is formed.

[0008] Consequently, this tightening of the encoder wheel against the outer surface of the barrel of the coupling member generates tensile stresses in the encoder wheel, which can cause it to break, in particular when it is made of sintered steel, due to the fitting of the first and second transmission shafts in the bore of the coupling member.

[0009] In order to limit the risk of breakage of the encoder wheel, a method of assembling the encoder wheel on the barrel of the complex coupling member must be implemented, but this is sensitive in terms of reproducibility during manufacturing.

[0010] Consequently, this assembly process presents a risk from a quality point of view, in particular to respect manufacturing tolerances, and is expensive.

[0011] The present invention aims to solve the aforementioned drawbacks and to propose an electromechanical actuator of a concealment device, as well as a concealment device comprising such an electromechanical actuator, making it possible to couple a first transmission shaft with a second transmission shaft by means of a coupling member, where the coupling member supports a magnetic encoder wheel of a counting device, while avoiding a risk of breakage of the encoder wheel, when fitting the first and second transmission shafts inside a bore of the coupling member.

[0012] In this regard, the present invention aims, according to a first aspect, at an electromechanical actuator of a concealment device,

[0013] the electromechanical actuator comprising at least:

[0014] - an electric motor,

[0015] - a first transmission shaft, the first transmission shaft being driven in rotation by the electric motor,

[0016] - a second transmission shaft,

[0017] - a coupling member, the coupling member mechanically connecting the first transmission shaft to the second transmission shaft, the coupling member comprising a first end and a second end, the second end being opposite the first end, and

[0018] - a counting device, the counting device being of the magnetic type,

[0019] the counting device comprising at least:

[0020] - a code wheel, the code wheel being magnetic, the code wheel comprising an outer surface and an inner surface, and

[0021] - at least one encoder wheel position detection sensor,

[0022] the coupling member comprising at least:

[0023] - a bore, the bore opening at each of the first and second ends of the coupling member, the first transmission shaft being fitted into the bore at the first end of the coupling member and the second transmission shaft being fitted into the bore at the second end of the coupling member, and

[0024] - a groove, the encoder wheel being fitted inside the groove, the groove comprising a first surface and a second surface, the first surface being of larger diameter than the second surface.

[0025] According to the invention, the encoder wheel is held inside the groove by clamping the outer surface of the encoder wheel against the first surface of the groove.

[0026] Thus, this construction of the electromechanical actuator makes it possible to couple the first transmission shaft with the second transmission shaft by means of the coupling member, which supports the magnetic encoder wheel of the counting device, while avoiding a risk of breakage of the encoder wheel, when fitting the first and second transmission shafts inside the bore of the coupling member.

[0027] In this way, this clamping of the encoder wheel against the first surface of the groove of the coupling member generates compressive stresses inside the encoder wheel, which are less likely to cause the latter to break, compared to the known solution of the prior art described previously.

[0028] Furthermore, a method of assembling the encoder wheel inside the groove of the coupling member is simpler to implement, compared to that of the known solution of the prior art described previously.

[0029] Consequently, this assembly method presents a lower risk from a quality point of view, in particular to respect manufacturing tolerances, and is less expensive, compared to that of the known solution of the prior art described above. cededly.

[0030] According to an advantageous characteristic of the invention, the coupling member is made of a plastic material.

[0031] According to another advantageous characteristic of the invention, the encoder wheel is made of sintered steel.

[0032] According to another advantageous characteristic of the invention, the first surface of the groove has a first diameter. The second surface of the groove has a second maximum diameter. The first diameter is larger than the second maximum diameter. The inner surface of the encoder wheel has an inner diameter. Furthermore, the inner diameter is strictly larger than the second maximum diameter.

[0033] According to another advantageous characteristic of the invention, the electromechanical actuator further comprises:

[0034] - a casing, the electric motor, the counting device and the member coupling being mounted inside the housing,

[0035] - at least one electronic card, on which the or each sensor is assembled.

[0036] Furthermore, the electronic card is held in position inside the housing by means of mounting elements.

[0037] According to another advantageous characteristic of the invention, the electromechanical actuator further comprises a control unit, the control unit comprising another electronic card. The electronic card is electrically connected to the other electronic card by means of an electrical connection cable. Furthermore, the electrical connection cable extends between the electronic card and the other electronic card by being arranged between the casing and housings of other members of the electromechanical actuator.

[0038] The present invention aims, according to a second aspect, at a concealment device,

[0039] the concealment device comprising at least:

[0040] - a screen, the screen comprising a first end and a second end, the second end being opposite the first end,

[0041] - a first movable bar, the first end of the screen being connected to the first moving bar, and

[0042] - a motorized drive device, the motorized drive device being configured to move the screen,

[0043] the motorized drive device comprising at least:

[0044] - an electromechanical actuator according to the invention and as mentioned above- above, the electromechanical actuator being configured to drive the first movable bar in movement.

[0045] This concealment device has characteristics and advantages similar to those described previously, in relation to the electromechanical actuator according to the invention.

[0046] According to an advantageous characteristic of the invention, the concealment device further comprises:

[0047] - a first cord or a first chain,

[0048] - a second cord or a second chain,

[0049] - a first drive arrangement, the first drive arrangement being configured to cooperate with the first cord or the first chain, and

[0050] - a second drive arrangement, the second drive arrangement being configured to cooperate with the second cord or the second chain.

[0051] Furthermore, the electromechanical actuator is configured to drive the first movable bar in movement by means of the first and second cords or chains.

[0052] According to another advantageous characteristic of the invention, the occulting device further comprises a second movable bar, the second end of the screen being connected to the second movable bar. Furthermore, the electromechanical actuator is configured to drive the second movable bar in movement.

[0053] According to another advantageous characteristic of the invention, the concealment device further comprises:

[0054] - a third cord or a third chain,

[0055] - a fourth cord or a fourth chain,

[0056] - a third drive arrangement, the third drive arrangement being configured to cooperate with the third cord or the third chain, and

[0057] - a fourth drive arrangement, the fourth drive arrangement being configured to cooperate with the fourth cord or the fourth chain.

[0058] Furthermore, the electromechanical actuator is configured to drive the second movable bar in movement by means of the third and fourth cords or chains.

[0059] Other features and advantages of the invention will become apparent in the following description, given with reference to the appended drawings, given as non-limiting examples and in which:

[0060] [Fig.l] [Fig.l] is a schematic perspective view of an installation comprising a concealment device according to one embodiment of the invention;

[0061] [Fig.2] [Fig.2] is a schematic perspective view of an electro actuator mechanics of a motorized drive device of the occulting device illustrated in [Fig.l], where a cover has been removed;

[0062] [Fig.3] [Fig.3] is a schematic top view of a part of the electric actuator tromechanical system shown in [Fig.2], where one housing of each of the counting devices has been removed;

[0063] [Fig.4] [Fig.4] is a schematic sectional and perspective view of part of the electromechanical actuator illustrated in [Fig.2];

[0064] [Fig.5] [Fig.5] is a schematic sectional view of a portion of the electric actuator tromechanical system illustrated in [Fig.2], according to a section plane VV illustrated in [Fig.3]; and

[0065] [Fig.6] [Fig.6] is a schematic perspective and exploded view of one of the dis counting positives shown in Figures 3 to 5.

[0066] Firstly, with reference to [Fig. 1], an installation 1 comprising a closing, concealing or solar protection device 3 according to an embodiment of the invention is described. This installation 1, installed in a building, not shown, comprises an opening, not shown, in which a window or a door, not shown, is arranged. This installation 1 is equipped with a screen 2 belonging to the closing, concealing or solar protection device 3, in particular a motorized blind. The screen 2 is configured to conceal, at least partially, the opening made in a wall of the building.

[0067] The closing, concealing or sun protection device 3 is hereinafter called the “concealing device”. The concealing device 3 comprises the screen 2.

[0068] Here, the screen 2 can be formed, for example, from a pleated or honeycombed fabric or from slats which can be oriented.

[0069] The screen 2 comprises a first end 2a, in particular an upper end, and a second end 2b, in particular a lower end, the second end 2b being opposite the first end 2a.

[0070] A blind according to the embodiment of the invention is described with reference to [Fig.l].

[0071] The occulting device 3 comprises a first movable bar 8a, in particular an upper movable bar. The first end 2a of the screen 2 is connected to the first movable bar 8a.

[0072] Here, the occulting device 3 further comprises a second movable bar 8b, in particular a lower movable bar. The second end 2b of the screen 2 is connected to the second movable bar 8b.

[0073] Thus, the screen 2 is arranged, in other words is configured to be deployed, between the first and second movable bars 8a, 8b. Depending on the relative position of the first and second movable bars 8a, 8b, the screen 2 is more or less deployed.

[0074] Here, the second movable bar 8b is identical to the first movable bar 8a.

[0075] As a variant, not shown, the second movable bar 8b is different from the first mobile bar 8a.

[0076] The occulting device 3 comprises a motorized drive device 5. The motorized drive device 5 is configured to drive in movement, in other words drives in movement, the screen 2.

[0077] The occulting device 3 further comprises a housing 7.

[0078] Here, the motorized drive device 5 is mounted, in other words is housed, in the housing 7, in particular in an assembled configuration of the occulting device 3.

[0079] More particularly, the housing 7 is mounted, in other words is configured to be mounted, in the upper part or above the opening, in particular in an assembled configuration of the occulting device 3 in the installation 1. The housing 7 is generally called a rail and, more particularly, an upper rail.

[0080] Advantageously, the housing 7 comprises at least one lower wall 7a and two side walls 7b.

[0081] Here, each of the side walls 7b is connected to the bottom wall 7a of the housing 7. Furthermore, each of the side walls 7b is perpendicular to the bottom wall 7a of the housing 7.

[0082] In other words, the housing 7 has a “U” shaped section.

[0083] The housing 7 comprises a first end 7c and a second end 7d. The second end 7d is opposite the first end 7c.

[0084] The motorized drive device 5 comprises at least one electromechanical actuator 11.

[0085] Here, the electromechanical actuator 11 is mounted, in other words is housed, inside the housing 7, in particular in the assembled configuration of the occulting device 3.

[0086] The electromechanical actuator 11 comprises a first end 11a and a second end 11b, the second end 11b being opposite the first end 11a.

[0087] Here, in the installation 1, an upper end-of-travel position corresponds to a position in which the first movable bar 8a can no longer rise, in particular when approaching the housing 7. The upper end-of-travel position can either be predetermined, or correspond to the first movable bar 8a pressing against the housing 7. Furthermore, a lower end-of-travel position corresponds to a position in which the second movable bar 8b can no longer descend, in particular when moving away from the housing 7 or from the first movable bar 8a. The lower end-of-travel position can either be predetermined, or correspond to the second movable bar 8b pressing against a threshold of the opening, or correspond to the complete unrolling of the screen 2.

[0088] The motorized drive device 5 further comprises at least one drive shaft 9a, 9b. Furthermore, the electromechanical actuator 11 is configured to drive in rotation, in other words drives in rotation, the drive shaft 9a, 9b, so as to drive in movement the, one or each of the first and second movable bars 8a, 8b.

[0089] Here, the motorized drive device 5 comprises a first shaft drive shaft 9a and a second drive shaft 9b. Furthermore, the electromechanical actuator 11 is configured to rotate, in other words rotates, the first drive shaft 9a, so as to drive the first movable bar 8a in movement, and is configured to rotate, in other words rotates, the second drive shaft 9b, so as to drive the second movable bar 8b in movement.

[0090] Advantageously, the first and second drive shafts 9a, 9b are parallel to each other.

[0091] Here, the first and second drive shafts 9a, 9b are located on the same side of the electromechanical actuator 11, as illustrated in [Fig.l].

[0092] Advantageously, the occulting device 3 comprises a first cord 4a, a second cord 4b, a first drive arrangement 6a and a second drive arrangement 6b. The first drive arrangement 6a is configured to cooperate, in other words cooperates, with the first cord 4a. The second drive arrangement 6b is configured to cooperate, in other words cooperates, with the second cord 4b. Furthermore, the electromechanical actuator 11 is configured to drive in movement, in other words drives in movement, the first movable bar 8a via the first and second cords 4a, 4b.

[0093] Advantageously, the first drive arrangement 6a is configured to wind and unwind, in other words winds and unwinds, the first cord 4a. Furthermore, the second drive arrangement 6b is configured to wind and unwind, in other words winds and unwinds, the second cord 4b.

[0094] Thus, when the first and second cords 4a, 4b are wound by means of the first and second drive arrangements 6a, 6b, the first movable bar 8a is raised towards the housing 7. Furthermore, when the first and second cords 4a, 4b are unwound by means of the first and second drive arrangements 6a, 6b, the first movable bar 8a is lowered away from the housing 7.

[0095] Advantageously, each of the first and second cords 4a, 4b is attached to the first movable bar 8a.

[0096] Here, the occulting device 3 further comprises a third cord 4c, a fourth cord 4d, a third drive arrangement 6c and a fourth drive arrangement 6d. The third drive arrangement 6c is configured to cooperate, in other words cooperates, with the third cord 4c. Furthermore, the fourth drive arrangement 6d is configured to cooperate, in other words cooperates, with the fourth cord 4d. Furthermore, the electromechanical actuator 11 is configured to drive in displacement, in other words drives in displacement, the second movable bar 8b via the third and fourth cords 4c, 4d.

[0097] Advantageously, the third drive arrangement 6c is configured to wind and unwind, in other words winds and unwinds, the third cord 4c. Furthermore, the fourth drive arrangement 6d is configured to wind and unwind, in other words winds and unwinds, the fourth cord 4d.

[0098] Thus, when the third and fourth cords 4c, 4d are wound by means of the third and fourth drive arrangements 6c, 6d, the second movable bar 8b is raised towards the housing 7. Furthermore, when the third and fourth cords 4c, 4d are unwound by means of the third and fourth drive arrangements 6c, 6d, the second movable bar 8b is lowered away from the housing 7.

[0099] Advantageously, each of the third and fourth cords 4c, 4d is attached to the second movable bar 8b.

[0100] Thus, the first, second, third and fourth cords 4a, 4b, 4c, 4d connect the first and second drive shafts 9a, 9b to the first and second movable bars 8a, 8b.

[0101] In this way, the first, second, third and fourth cords 4a, 4b, 4c, 4d support the screen 2.

[0102] Here, the third and fourth drive arrangements 6c, 6d are respectively identical to the first and second drive arrangements 6a, 6b.

[0103] The first, second, third and fourth drive arrangements 6a, 6b, 6c, 6d may also be referred to as first, second, third and fourth winders.

[0104] Advantageously, the first, second, third and fourth drive arrangements 6a, 6b, 6c, 6d each comprise at least one pulley configured to wind or unwind one of the first, second, third and fourth cords 4a, 4b, 4c, 4d.

[0105] Advantageously, the first and second drive arrangements 6a, 6b, respectively the third and fourth drive arrangements 6c, 6d, are mounted, in other words are housed, inside the housing 7, in particular in the assembled configuration of the occulting device 3.

[0106] The drive device 5 is thus configured to drive in movement, in other words drives in movement, in particular in a vertical direction, the first and second movable bars 8a, 8b of the occulting device 3, by means of the first, second, third and fourth cords 4a, 4b, 4c, 4d, by means of the electromechanical actuator 11.

[0107] Advantageously, the first and second movable bars 8a, 8b are parallel to each other, in particular in the assembled configuration of the occulting device 3. Furthermore, the first and second drive shafts 9a, 9b are parallel to the first and second movable bars 8a, 8b, in particular in the confi- assembled configuration of the occultation device 3.

[0108] Alternatively, not shown, the first drive shaft 9a is coupled to the second movable bar 8b and the second drive shaft 9b is coupled to the first movable bar 8a, instead of the first drive shaft 9a being coupled to the first movable bar 8a and the second drive shaft 9b being coupled to the second movable bar 8b, as explained above.

[0109] Advantageously, the motorized drive device 5 and, more particularly, the electromechanical actuator 11 is controlled by a control unit. The control unit may be, for example, a local control unit 12 or a central control unit 13.

[0110] Advantageously, the local control unit 12 can be connected, by wired or wireless connection, with the central control unit 13.

[0111] Advantageously, the central control unit 13 can control the local control unit 12, as well as other similar local control units distributed throughout the building.

[0112] The motorized drive device 5 is preferably configured to execute the movement commands, in particular deployment or retraction, of the screen 2, which can be issued, in particular, by the local control unit 12 or by the central control unit 13.

[0113] The installation 1 comprises either the local control unit 12, or the central control unit 13, or the local control unit 12 and the central control unit 13.

[0114] The motorized drive device 5, including the electromechanical actuator 11, belonging to the installation 1 and, more particularly, to the occultation device 3 illustrated in [Fig. 1], according to the embodiment of the invention, will now be described in more detail and with reference to [Fig. 2].

[0115] The electromechanical actuator 11 comprises an electric motor 16. The electric motor 16 is represented by its casing in [Fig.2], without details on its internal constituent elements.

[0116] Here, the electromechanical actuator 11 comprises a single electric motor 16.

[0117] Advantageously, the electric motor 16 of the electromechanical actuator 11 comprises a rotor 21 and a stator, not shown, positioned coaxially around an axis of rotation XI6.

[0118] Advantageously, the electric motor 16 of the electromechanical actuator 11 may be of the brushless type with electronic commutation, also called “BLDC” (acronym for the English term BrushLess Direct Current) or “synchronous with permanent magnets”, or of the direct current type.

[0119] Advantageously, the rotor 21 of the electric motor 16 comprises a first end, not shown, in other words a first outlet, and a second end 21b, in other words a second outlet. The second end 21b is opposite the first end.

[0120] Means for controlling the electromechanical actuator 11, allowing the screen 2 to move, comprise at least one control unit 15, in particular an electronic control unit, shown in [Fig.2].

[0121] Here, the electromechanical actuator 11 further comprises the control unit 15.

[0122] As a variant, not shown, the control unit 15 is arranged outside of the electromechanical actuator 11 and, for example, is arranged inside the housing 7. In this case, the control unit 15 is electrically connected at least to the electric motor 16 via an electrical connection.

[0123] The control unit 15 is capable of operating the electric motor 16 and, in particular, of enabling the supply of electrical energy to the electric motor 16.

[0124] Thus, the control unit 15 controls, in particular, the electric motor 16, so as to deploy or fold the screen 2 and, more particularly, so as to raise or lower the first movable bar 8a and, consequently, the upper part of the screen 2, and so as to raise or lower the second movable bar 8b and, consequently, the lower part of the screen 2.

[0125] Advantageously, the control unit 15 comprises hardware and / or software means.

[0126] By way of non-limiting example, the hardware means of the control unit 15 comprise at least one microcontroller 31.

[0127] Advantageously, the control unit 15 further comprises a first communication module 27, in particular for receiving control orders, the control orders being emitted by an order transmitter, such as the local control unit 12 or the central control unit 13, these orders being intended to control the electromechanical actuator 11.

[0128] Advantageously, the first communication module 27 is of the wireless type. In particular, the first communication module 27 is configured to receive radio control orders.

[0129] Alternatively or additionally, the first communication module 27 can allow the reception of control orders transmitted by wired means.

[0130] Advantageously, the control unit 15, the local control unit 12 and / or the central control unit 13 may be in communication with a weather station, not shown, arranged inside the building or remote outside the building, including, in particular, one or more sensors which may be configured to determine, for example, a temperature, a brightness, or even a wind speed, in the case where the weather station is remote outside the building.

[0131] Advantageously, the control unit 15, the local control unit 12 and / or the central control unit 13 can also be in communication with a server 28, so as to control the motorized drive device 5 and, more particularly, the electromechanical actuator 11, according to data made available remotely via a communication network, in particular an Internet network which can be connected to the server 28.

[0132] The control unit 15 can be controlled from the local control unit 12 or the central control unit 13. The local control unit 12 or the central control unit 13 is provided with a control keyboard. The control keyboard comprises one or more selection elements 14 and, optionally, one or more display elements 34.

[0133] By way of non-limiting examples, the selection elements may comprise push buttons and / or sensitive keys. The display elements may comprise light-emitting diodes and / or a display, for example LCD (acronym for the English term “Liquid Crystal Display”) or TFT (acronym for the English term “Thin Film Transistor”). The selection and display elements may also be implemented using a touch screen.

[0134] Advantageously, the local control unit 12 or the central control unit 13 further comprises at least one second communication module 36.

[0135] Thus, the second communication module 36 is configured to transmit, in other words emit, control orders, in particular by wireless means, for example radioelectric, or by wired means.

[0136] Furthermore, the second communication module 36 can also be configured to receive, in other words receives, control orders, in particular via the same means.

[0137] Advantageously, the second communication module 36 of the local control unit 12 or of the central control unit 13 is configured to communicate, in other words communicates, with the first communication module 27 of the control unit 15.

[0138] Thus, the second communication module 36 of the local control unit 12 or of the central control unit 13 exchanges control orders with the first communication module 27 of the control unit 15, either in a unidirectional manner or in a bidirectional manner.

[0139] Advantageously, the local control unit 12 is a control point, which may be fixed or mobile. A fixed control point may be a control box intended to be fixed on a facade of a wall of the building or on a face of a fixed frame of a window or a door. A mobile control point may be a remote control, a smartphone or a tablet.

[0140] Advantageously, the local control unit 12 or the central control unit 13 further comprises a controller 35.

[0141] The motorized drive device 5, in particular the control unit 15, is preferably configured to execute movement control orders, in particular for folding and deployment, of the screen 2. These control orders can be issued, in particular, by the local control unit 12 or by the central control unit 13.

[0142] The motorized drive device 5 can be controlled by the user, for example by receiving a control command corresponding to pressing the or one of the selection elements 14 of the local control unit 12 or of the central control unit 13.

[0143] The motorized drive device 5 can also be controlled automatically, for example by receiving a control command corresponding to at least one signal from at least one sensor, not shown, and / or to a signal from a clock, not shown, of the control unit 15, in particular of the microcontroller. The sensor and / or the clock can be integrated, alternatively, into the local control unit 12 or into the central control unit 13.

[0144] Advantageously, the electromechanical actuator 11 further comprises a casing 17, in particular of parallelepiped shape.

[0145] Advantageously, the electric motor 16 is mounted, in other words is housed, inside the casing 17, in particular in an assembled configuration of the electromechanical actuator 11.

[0146] The casing 17 comprises a first end 17a and a second end 17b, the second end 17b being opposite the first end 17a.

[0147] The first end 17a of the casing 17 is oriented towards the first end 11a of the electromechanical actuator 11, while the second end 17b of the casing 17 is oriented towards the second end 11b of the electromechanical actuator 11. The viewing angles of FIGS. 1 and 2 are opposite.

[0148] Here, the casing 17 is made of a plastic material.

[0149] The material of the casing is not limiting and may be different. It may be, in particular, a metallic material.

[0150] Advantageously, the casing 17 comprises a base 17c and a cover 17d, which is shown only in [Fig.l]. Furthermore, the cover 17d is fixed, in other words is configured to be fixed, on the base 17c by means of fixing elements, not shown, in particular in the assembled configuration of the electromechanical actuator 11.

[0151] Here, the fixing elements are fixing screws, in particular six in number. The fixing screws pass through through holes, not shown, provided in the cover 17d and are screwed into screw holes 18 provided in the base 17c. The number of through holes and the number of screw holes are equal to the number of fixing screws. Only three screw holes 18 are visible in [Fig.2] and only two screw holes 18 are visible in [Fig.3].

[0152] The type and number of fastening elements are not limiting and may be different. They may be, for example, elastic snap-fastening elements or a combination of different fastening elements, in particular by screwing and elastic snap-fastening.

[0153] Here, the control unit 15 comprises a first and a second electronic card 30.

[0154] Advantageously, each of the first and second electronic cards 30 is mounted, in other words is housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0155] Advantageously, the first electronic card 30 is configured to control the electric motor 16. Furthermore, the second electronic card 30 is configured to, in particular, access parameterization and / or configuration functions of the electromechanical actuator 11, by means of selection and, possibly, display devices, not shown. Furthermore, the second electronic card 30 is configured to allow the recharging of a battery 24.

[0156] As a variant, not shown, the control unit 15 comprises a single electronic card 30. Advantageously, in this case, the single electronic card 30 is mounted, in other words is housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0157] The electromechanical actuator 11 is supplied with electrical energy by an electrical energy supply source 29.

[0158] Advantageously, the electrical energy supply source 29 is constituted by the battery 24. The battery 24 is represented by its casing in [Fig.l], without details on its internal constituent elements.

[0159] Thus, the battery 24 is configured to supply electrical energy, in other words supplies electrical energy, to the electromechanical actuator 11 and, more particularly, to the electric motor 16, as well as to the control unit 15.

[0160] Advantageously, the battery 24 is mounted, in other words is housed, inside the housing 7, in particular in the assembled configuration of the occulting device 3.

[0161] Here, the motorized drive device 5 further comprises the battery 24.

[0162] As a variant, not shown, the battery 24 is mounted, in other words is housed, in the casing 17, in particular in the assembled configuration of the electromechanical actuator 11, which itself is mounted inside the housing 7, in particular in the assembled configuration of the occulting device 3.

[0163] In another variant, not shown, the battery 24 is mounted outside the housing 7, in particular in the assembled configuration of the concealing device 3. In this case, the battery 24 can be fixed against one of the side walls 7b of the housing 7, in particular by means of at least one fixing element, such as, for example, at least one holding support, while being arranged outside the housing 7.

[0164] Advantageously, the battery 24 comprises one or more electrical energy storage elements, not shown. The electrical energy storage elements may be, in particular, accumulators, in the case where the battery 24 is of the rechargeable type, or even batteries.

[0165] Advantageously, the control unit 15 comprises charging elements configured to charge the battery 24 from the electrical energy supplied by an external electrical energy supply source, not shown. The charging elements comprise, at least, one electrical connector, not shown, in the case where the battery 24 is of the rechargeable type. The external electrical energy supply source is configured to be electrically connected to the electrical connector, via an electrical power supply cable, not shown.

[0166] Advantageously, the external electrical power supply source is a charger, which can be plugged into a wall electrical outlet, so as to recharge the battery 24, from an electrical power supply network, in particular from the mains.

[0167] Alternatively, the external electrical power source may be an auxiliary battery or a photovoltaic panel.

[0168] As a variant, not shown, the electrical power supply source 29 is constituted by an electrical power supply network, in particular from the mains or called “PoE” (acronym for the English term Power over Ethernet). In this case, the motorized drive device 5 further comprises a transformer, in addition to or replacing the battery 24.

[0169] Advantageously, the motorized drive device 5 further comprises an electrical power supply cable 37. Furthermore, the electrical power supply cable 37 supplies electrical energy, in other words is configured to supply electrical energy, to the electromechanical actuator 11 from the electrical power supply source 29. In other words, the electromechanical actuator 11 is electrically connected to the electrical power supply source 29 and, more particularly, to the battery 24 or to the transformer, via the electrical power supply cable 37.

[0170] Here, the power supply cable 37 comprises an electrical connector 38, which is arranged at one of its ends, as illustrated in [Fig.l], for connecting with an electrical connector 39 of the electrical power supply source 29, in this case battery 24.

[0171] As a variant, not shown, the electrical power supply cable 37 comprises an electrical connector at each of its ends, on the one hand, to connect with an electrical connector 39 of the electrical power supply source 29 and, on the other hand, to connect with an electrical connector of the electromechanical actuator 11.

[0172] As a variant, not shown, the electrical power supply cable 37 is a ribbon cable, in other words a flat cable, provided with electrical connectors, in particular of the RJ45 type (acronym for the English term “Registered Jack”), in the case where the electromechanical actuator 11 is supplied with electrical energy from the battery 24 or, possibly, from an electrical power supply network called “PoE”.

[0173] As a variant, not shown, the electrical power supply cable 37 is a cord, in the case where the electromechanical actuator 11 is supplied with electrical energy from a mains power supply network, which may have, for example, a supply voltage of 110 Volts or 230 Volts.

[0174] Advantageously, the electromechanical actuator 11 is arranged at the first end 7c of the housing 7. The battery 24 and / or the transformer is arranged at the second end 7d of the housing 7.

[0175] Advantageously, the electromechanical actuator 11 further comprises at least one coupling element 20a, 20b, in other words an output shaft.

[0176] Here, the electromechanical actuator 11 comprises a first coupling element 20a, in other words a first output shaft, and a second coupling element 20b, in other words a second output shaft.

[0177] Thus, the electromechanical actuator 11 is a two-output electromechanical actuator.

[0178] Advantageously, the first and second coupling elements 20a, 20b are arranged at the first end 11a of the electromechanical actuator 11.

[0179] Thus, the two outputs of the electromechanical actuator 11 are arranged on the same side of the electromechanical actuator 11, in particular of the casing 17.

[0180] Furthermore, the first and second drive shafts 9a, 9b are arranged on the same side of the electromechanical actuator 11 as the first and second coupling elements 20a, 20b.

[0181] Each of the first and second coupling elements 20a, 20b comprises a first end and a second end, the second end being opposite the first end.

[0182] Advantageously, the first coupling element 20a is movable in rotation, around a first axis of rotation Xa, inside the housing 7. The second element coupling element 20b is rotatable, about a second axis of rotation Xb, inside the housing 7. The first drive shaft 9a is integral with the first coupling element 20a in rotation, about the first axis of rotation Xa, in particular at the second end of the first coupling element 20a. Furthermore, the second drive shaft 9b is integral with the second coupling element 20b in rotation, about the second axis of rotation Xb, in particular at the second end of the second coupling element 20b.

[0183] Thus, the electric motor 16 is configured to drive in rotation, in other words drives in rotation, on the one hand, the first coupling element 20a, so as to drive in rotation the first drive shaft 9a, and, on the other hand, the second coupling element 20b, so as to drive in rotation the second drive shaft 9b.

[0184] Here, the first and second coupling elements 20a, 20b are arranged on the same side of the electric motor 16.

[0185] Here, the first and second coupling elements 20a, 20b are identical.

[0186] Advantageously, the first and second axes of rotation Xa, Xb are arranged in the same horizontal plane P. In this case, the plane P is parallel to the lower wall 7a of the housing 7.

[0187] As a variant, not shown, the first and second axes of rotation Xa, Xb are arranged in the same vertical plane. In this case, the plane is perpendicular to the lower wall 7a of the housing 7.

[0188] In another variant, not shown, the first and second axes of rotation Xa, Xb are arranged in a staggered pattern along an oblique plane. In this case, the plane is inclined relative to the lower wall 7a of the housing 7 by a value between 0° and 90° or between 90° and 180°.

[0189] Regardless of the position of the first and second axes of rotation Xa, Xb relative to the housing 7, the first and second drive shafts 9a, 9b are arranged in the same arrangement as the first and second coupling elements 20a, 20b relative to the housing 7.

[0190] Advantageously, the electromechanical actuator 11 further comprises at least one reducer 19a, 19b.

[0191] Here, the electromechanical actuator 11 comprises a first reducer 19a and a second reducer 19b. Each of the first and second reducers 19a, 19b is represented by its casing in FIGS. 2 and 3, in particular by means of a housing 48 common to the first and second reducers 19a, 19b, without details on its internal constituent elements.

[0192] Each of the first and second reducers 19a, 19b comprises at least one reduction stage. The reduction stage may be, for example, a gear train of the type epicyclic.

[0193] The type and number of reduction stages of each of the first and second reducers are not limiting. The number of reduction stages may be, for example, three, but also two or four.

[0194] Advantageously, the first reducer 19a is configured to transmit, in other words transmits, a movement generated by the electric motor 16 to the first coupling element 20a and, consequently, to the first drive shaft 9a. Furthermore, the second reducer 19b is configured to transmit a movement generated by the electric motor 16 to the second coupling element 20b and, consequently, to the second drive shaft 9b.

[0195] Each of the first and second reducers 19a, 19b comprises an input shaft 42 and an output shaft, not shown.

[0196] Here, the input shaft 42 of each of the first and second reducers 19a, 19b is a shaft of a sun gear of a first reduction stage.

[0197] Advantageously, the input shaft 42 of each of the first and second reducers 19a, 19b has a non-circular section.

[0198] Here and as illustrated in Figures 5 and 6, the input shaft 42 of each of the first and second reducers 19a, 19b comprises a flat 42a.

[0199] The number of flats on the input shaft of each of the first and second reducers is not limiting and may be different. It may, for example, be two or more.

[0200] Advantageously, the first and second reducers 19a, 19b are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0201] Here, the first and second reducers 19a, 19b are identical.

[0202] Advantageously, the electromechanical actuator 11 further comprises at least one clutch 23a, 23b.

[0203] Here, the electromechanical actuator 11 comprises a first clutch 23a and a second clutch 23b. Each of the first and second clutches 23a, 23b is represented by its casing in Figures 2 and 3, without details on its internal constituent elements.

[0204] Advantageously, the first clutch device 23a is housed inside a first housing 49a. Similarly, the second clutch device 23b is housed inside a second housing 49b, which is separate from the first housing 49a of the first clutch 23a.

[0205] Advantageously, the first clutch 23a is configured to be engaged or disengaged, in other words is engaged or disengaged, so as to secure or disengage, in rotation at least, the first coupling element 20a and, by consequently, the first drive shaft 9a relative to the electric motor 16, in particular at the first end of the rotor 21 of the electric motor 16. Furthermore, the second clutch 23b is configured to be engaged or disengaged, in other words is engaged or is disengaged, so as to secure or disengage, in rotation at least, the second coupling element 20b and, consequently, the second drive shaft 9b relative to the electric motor 16, in particular at the first end of the rotor 21 of the electric motor 16.

[0206] Thus, each of the first and second clutches 23a, 23b is configured to be switched either into an engaged position or into a disengaged position.

[0207] Advantageously, the engagement and disengagement of the first and second clutches 23a, 23b is controlled by the control unit 15.

[0208] Advantageously, each of the first and second clutches 23a, 23b comprises an input shaft 25 and an output shaft 41.

[0209] Advantageously, the output shaft 41 of each of the first and second clutches 23a, 23b has a non-circular section.

[0210] Here and as illustrated in Figures 3, 4 and 6, the output shaft 41 of each of the first and second clutches 23a, 23b comprises two flats 41a, only one of which is shown in [Fig.6].

[0211] The number of flats on the output shaft of each of the first and second clutches is not limiting and may be different. It may, for example, be one in number or strictly greater than two.

[0212] By “engaging”, we mean the implementation of a clutch, at each of the first and second clutches 23a, 23b, to mechanically couple its input shaft 25 and its output shaft 41 and transmit a rotational movement between this input shaft 25 and this output shaft 41.

[0213] By “disengage”, we mean the implementation of a disengagement, at the level of each of the first and second clutches 23a, 23b, to decouple its input shaft 25 and its output shaft 41 and not to transmit movement between this input shaft 25 and this output shaft 41.

[0214] Advantageously, when the electric motor 16 is electrically activated and only one of the first and second clutches 23a, 23b is engaged, only one of the first and second coupling elements 20a, 20b and, consequently, only one of the first and second drive shafts 9a, 9b is rotated by the electric motor 16. Furthermore, when the electric motor 16 is electrically activated and the first and second clutches 23a, 23b are engaged, the first and second coupling elements 20a, 20b and, consequently, the first and second drive shafts 9a, 9b are rotated by the electric motor 16.

[0215] Thus, the first clutch 23a makes it possible to produce a first transmission, in other words a first mechanical connection, between the electric motor 16 and the first coupling element 20a and, consequently, the first drive shaft 9a. Furthermore, the second clutch 23b makes it possible to produce a second transmission, in other words a second mechanical connection, between the electric motor 16 and the second coupling element 20b and, consequently, the second drive shaft 9b.

[0216] Advantageously, each of the first and second clutches 23a, 23b is of the monostable type or of the bistable type.

[0217] Here, each of the first and second clutches 23a, 23b is a friction clutch, in other words an adhesion clutch.

[0218] The type of each of the first and second clutches is not limiting and may be different. It may be, for example, a dog clutch.

[0219] Advantageously, the first and second clutches 23a, 23b are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0220] Here, the first and second clutches 23a, 23b are identical.

[0221] Advantageously, the first reducer 19a is connected, in other words is configured to be connected, to the rotor 21 of the electric motor 16, via the first clutch 23a, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the second reducer 19b is connected, in other words is configured to be connected, to the rotor 21 of the electric motor 16, via the second clutch 23b, in particular in the assembled configuration of the electromechanical actuator 11.

[0222] Advantageously, the electromechanical actuator 11 further comprises at least one brake.

[0223] Here, the electromechanical actuator 11 comprises a first brake and a second brake, not shown.

[0224] By way of non-limiting examples, each of the first and second brakes may be a spring brake, a cam brake, a magnetic brake or an electromagnetic brake.

[0225] Advantageously, the first brake is configured to brake and / or to block in rotation, in other words brakes and / or blocks in rotation, the first coupling element 20a and, consequently, the first drive shaft 9a, so as to regulate the speed of movement of the first movable bar 8a, during a movement of the screen 2, and to hold the first movable bar 8a in position, when the electromechanical actuator 11 is electrically deactivated and / or when the first clutch 23a is disengaged. In addition, the second brake is configured to brake and / or to block in rotation, in other words brakes and / or blocks in rotation, the second coupling element 20b and, consequently, the second drive shaft 9b, so as to respectively regulate the speed of movement of the second movable bar 8b, during a movement of the screen 2, and to maintain the second movable bar 8b in position, when the electromechanical actuator 11 is electrically deactivated and / or when the second clutch 23b is disengaged.

[0226] Here, the first brake is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, between the first reducer 19a and the first coupling element 20a, in other words at the output of the first reducer 19a. Furthermore, the second brake is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, between the second reducer 19b and the second coupling element 20b, in other words at the output of the second reducer 19b.

[0227] As a variant, not shown, each of the first and second brakes is respectively configured to be arranged, in other words is respectively arranged, in particular in the assembled configuration of the electromechanical actuator 11:

[0228] - between two reduction stages of the first reducer 19a, or between two stages of reduction of the second reducer 19b, or

[0229] - between the first clutch 23a and the first reducer 19a, in other words at the output of the first clutch 23a, or between the second clutch 23b and the second reducer 19b, in other words at the output of the second clutch 23b.

[0230] Advantageously, the first and second brakes are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0231] Here, the first and second brakes are identical.

[0232] Advantageously, the electromechanical actuator 11 further comprises an end-of-travel and / or obstacle detection device, which may be mechanical or electronic.

[0233] Advantageously, the end-of-travel and / or obstacle detection device of the electromechanical actuator 11 is implemented by means of the microcontroller 31 of the control unit 15 and, in particular, by means of an algorithm implemented by this microcontroller 31.

[0234] Advantageously, the end-of-travel and / or obstacle detection device of the electromechanical actuator 11 is implemented by means of a measurement of a current passing through the electric motor 16.

[0235] The electromechanical actuator 11 further comprises at least one counting device 32a, 32b.

[0236] Here, the electromechanical actuator 11 comprises a first counting device 32a and a second counting device 32b.

[0237] Advantageously, the first counting device 32a is housed inside a first housing 50a. Similarly, the second counting device 32b is housed inside a second housing 50b, which is separate from the first housing 50a of the first counting device 32a. The first and second housings 50a, 50b are not shown in FIGS. 3 and 4.

[0238] As a variant, not shown, the first counting device 32a and the first clutch 23a are housed inside the same housing. Similarly, the second counting device 32b and the second clutch 23b are housed inside the same housing.

[0239] Each of the first and second counting devices 32a, 32b is configured to cooperate, in other words cooperates, with the control unit 15. Furthermore, each of the first and second counting devices 32a, 32b is configured to, in cooperation with the control unit 15, respectively determine a position, which can be called "current", of the first drive shaft 9a or of the second drive shaft 9b and, consequently, of the first movable bar 8a or of the second movable bar 8b.

[0240] Advantageously, the control unit 15 is configured to monitor at least one signal coming from each of the first and second counting devices 32a, 32b at a predetermined frequency, in particular as a function of the position of the first movable bar 8a or of the second movable bar 8b.

[0241] Each of the first and second counting devices 32a, 32b is of the magnetic type.

[0242] Each of the first and second counting devices 32a, 32b comprises a code wheel 43 and one or more sensors 44 for detecting the position, in this case angular, of the code wheel 43, in particular one or more Hall effect sensors.

[0243] Here, each of the first and second counting devices 32a, 32b comprises two sensors 44, only one of which is visible in FIGS. 4 and 5.

[0244] The number of sensors is not limiting and may be different. It may be, for example, one or three.

[0245] Here, the encoder wheel 43 comprises an outer surface 43a and an inner surface 43b.

[0246] The encoder wheel 43 of each of the first and second counting devices 32a, 32b is connected to the output shaft 41 of the first clutch 23a or the second clutch 23b.

[0247] Thus, each of the first and second counting devices 32a, 32b makes it possible respectively to determine the number of revolutions made by the output shaft 41 of the first clutch 23a or of the second clutch 23b.

[0248] Advantageously, the or each sensor 44 is assembled on an electronic card of the control unit 15, in particular on an additional electronic card 45.

[0249] Here, the electromechanical actuator 11 comprises a single additional electronic card 45 on which the or each sensor 44 of the first and second counting devices 32a, 32b is assembled.

[0250] Thus, the electromechanical actuator 11 comprises an additional electronic card 45 common to the first and second counting devices 32a, 32b.

[0251] As a variant, not shown, the electromechanical actuator 11 comprises an additional electronic card 45 for each of the first and second counting devices 32a, 32b. In this case, the or each sensor 44 of each of the first and second counting devices 32a, 32b is assembled respectively on one of the additional electronic cards 45. Thus, the electromechanical actuator 11 comprises two additional electronic cards 45.

[0252] Advantageously, the or each additional electronic card 45 is held in position, in other words is configured to be held in position, inside the casing 17 by means of mounting elements 52, in particular in the assembled configuration of the electromechanical actuator 11.

[0253] Here, the mounting elements 52 are studs provided in the casing 17, of which there are three.

[0254] The number and shape of the mounting elements are not limiting and may be different. They may, for example, be two or more in number and be produced by means of elastic snap-fastening or interlocking fastening elements. These mounting elements may also be provided, for example, in each of the first and second housings of the first and second counting devices.

[0255] Advantageously, the or each additional electronic card 45 is electrically connected to the or one of the electronic cards 30 by means of an electrical connection cable, not shown.

[0256] Here, the electrical connection cable extends between the first and second counting devices 32a, 32b, in particular the additional electronic card 45, and the control unit 15, in particular one of the electronic cards 30, being arranged between the casing 17, in particular the base 17c of the casing 17, and the housings of other members of the electromechanical actuator 11, such as, for example, the housings 49a, 49b of the first and second clutches 23a, 23b and the housing 51 of the coupling device 33.

[0257] In this case, one or each of the first and second housings 50a, 50b of the first and second counting devices 32a, 32b comprises an opening 53, so as to allow the passage of the electrical connection cable between the casing 17, in particular the base 17c of the casing 17, and the housings of other members of the electromechanical actuator. 11.

[0258] Advantageously, the electrical connection cable is a ribbon cable, in other words a flat cable, provided with electrical connectors. In addition, the or each additional electronic card 45 comprises at least one electrical connector 54. Similarly, the or one of the electronic cards 30 comprises at least one electronic connector, not shown. The electrical connectors of the electrical connection cable are plugged, in other words configured to be plugged, with the or each electrical connector 54 of the or each additional electronic card 45 and with the or each electrical connector of the or one of the electronic cards 30.

[0259] Here, only one electrical connector 54 of the additional electronic card 45 is illustrated in Figures 3 and 4.

[0260] As a variant, not shown, each of the first and second counting devices 32a, 32b makes it possible respectively to determine the number of revolutions made by the output shaft of the first reducer 19a or of the second reducer 19b.

[0261] In another variant, not shown, each of the first and second counting devices 32a, 32b makes it possible respectively to determine the number of revolutions made by the first coupling element 20a or the second coupling element 20b.

[0262] Each of the first and second counting devices 32a, 32b also makes it possible respectively to determine the direction of rotation of the first coupling element 20a or of the second coupling element 20b and / or to manage the end-of-travel positions of the first movable bar 8a or of the second movable bar 8b.

[0263] Here, the first and second counting devices 32a, 32b are identical.

[0264] Here, the first counting device 32a is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, between the first clutch 23a and the first reduction gear 19a. Furthermore, the second counting device 32b is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, between the second clutch 23b and the second reduction gear 19b.

[0265] Alternatively, not shown, the first counting device 32a is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, inside the first clutch 23a. Furthermore, the second counting device 32b is configured to be arranged, in other words is arranged, in particular in the assembled configuration of the electromechanical actuator 11, inside the second clutch 23b.

[0266] In another variant, not shown, the first counting device 32a is configured to be arranged, in other words is arranged, in particular in the confi assembled configuration of the electromechanical actuator 11, inside the first reducer 19a. Furthermore, the second counting device 32b is configured to be arranged, i.e. is arranged, in particular in the assembled configuration of the electromechanical actuator 11, inside the second reducer 19b.

[0267] Here, the first reducer 19a and the first counting device 32a are housed inside the same housing 48 as that of the first and second reducers 19a, 19b. Similarly, the second reducer 19b and the second counting device 32b are housed inside the same housing 48 as that of the first and second reducers 19a, 19b.

[0268] Advantageously, the electromechanical actuator 11 comprises at least one torque transmission device 10a, 10b.

[0269] Here, the electromechanical actuator 11 comprises a first torque transmission device 10a and a second torque transmission device 10b. Each of the first and second torque transmission devices 10a, 10b is shown by its casing in [Fig. 2], without details on its internal constituent elements. The first torque transmission device 10a is connected, on the one hand, to the electric motor 16, in particular by means of the first reduction gear 19a and the first clutch 23a, and, on the other hand, to the first drive shaft 9a, in particular by means of the first coupling element 20a. Furthermore, the second torque transmission device 10b is connected, on the one hand, to the electric motor 16, in particular by means of the second reduction gear 19b and the second clutch 23b, and, on the other hand, to the second drive shaft 9b, in particular by means of the second coupling element 20b.

[0270] Here, the first reducer 19a, in particular the output shaft of the first reducer 19a, is coupled, in other words is configured to be coupled, in particular in the assembled configuration of the electromechanical actuator 11, with the first coupling element 20a via the first torque transmission device 10a. Furthermore, the second reducer 19b, in particular the output shaft of the second reducer 19b, is coupled, in other words is configured to be coupled, in particular in the assembled configuration of the electromechanical actuator 11, with the second coupling element 20b via the second torque transmission device 10b.

[0271] Advantageously, the first and second torque transmission devices 10a, 10b are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0272] Here, the first and second torque transmission devices 10a, 10b are identical.

[0273] As a variant, not shown, the first and second transmission devices of couple 10a, 10b are different.

[0274] Advantageously, the electromechanical actuator 11 further comprises a coupling device 33. This coupling device 33 is represented by its casing in [Fig.2], without details on its internal constituent elements.

[0275] Advantageously, the coupling device 33 is housed inside a housing 51.

[0276] Advantageously, the coupling device 33 comprises a plurality of pinions, not shown, in particular four in number.

[0277] The number of pinions of the coupling device is not limiting and may be different, preferably even. It may be, for example, two or six.

[0278] Advantageously, the coupling device 33 further comprises an input shaft, which is connected to the first end of the rotor 21, and two output shafts, which are respectively connected to the input shaft 25 of one of the first and second clutches 23a, 23b.

[0279] Advantageously, the pinions are configured to be arranged, otherwise are arranged, between the input shaft and the output shafts of the coupling device 33, in particular in an assembled configuration of the coupling device 33.

[0280] Here, the input shaft and one of the output shafts of the coupling device 33 are connected by one of the pinions. Furthermore, the input shaft and the other of the output shafts of the coupling device 33 are connected by the set of pinions.

[0281] Alternatively, not shown, the first end of the rotor 21 of the electric motor 16 is connected directly to the first clutch 23a. Furthermore, the first end of the rotor 21 of the electric motor 16 is connected to the second clutch 23b via the coupling device 33.

[0282] Here, the coupling device 33 is mounted, in other words is housed, in particular in the assembled configuration of the electromechanical actuator 11, inside the casing 17.

[0283] Here, the coupling device 33 is arranged between the electric motor 16, in particular the first end of the rotor 21 of the electric motor 16, and the first and second clutches 23a, 23b, in particular the input shaft 25 of each of the first and second clutches 23a, 23b.

[0284] As a variant, not shown, the coupling device 33 is mounted, in other words is housed, in particular in the assembled configuration of the occulting device 3, inside the housing 7, while being arranged outside the casing 17. In this case, the coupling device 33 can be arranged at the second end 7d of the housing 7.

[0285] Advantageously, the coupling device 33 has a ratio of one, that is to say neither reduction nor amplification of a rotation speed of the rotor 21 of the 16 electric motor.

[0286] Advantageously, the housings of the various members of the electromechanical actuator 11, in particular the housing 51 of the coupling device 33, the housings 49a, 49b of the first and second clutches 23a, 23b, the first and second housings 50a, 50b of the first and second housings 32a, 32b and the housing 48 of the first and second reducers 19a, 19b and of the first and second torque transmission devices 10a, 10b, are assembled together by means of fixing elements, in particular by elastic snap-fastening.

[0287] Advantageously, a first set 22 of a first part of the members 10a, 10b, 15, 16, 19a, 19b, 20a, 20b, 23a, 23b, 32a, 32b of the electromechanical actuator 11 are aligned along a first axis of rotation X22 and a second set 26 of a second part of the members 10a, 10b, 15, 16, 19a, 19b, 20a, 20b, 23a, 23b, 32a, 32b of the electromechanical actuator 11 are aligned along a second axis of rotation X26. Furthermore, the first and second axes of rotation X22, X26 are parallel.

[0288] Advantageously, the first assembly 22 comprises the first clutch 23a, the first counting device 32a, the first reducer 19a, the first brake and the first coupling element 20a. Furthermore, the second assembly 26 comprises the second clutch 23b, the second counting device 32b, the second reducer 19b, the second brake and the second coupling element 20b.

[0289] Here, the electric motor 16 is an integral part of the first assembly 22 and is also aligned along the first axis of rotation X22.

[0290] Alternatively, not shown, the electric motor 16 is an integral part of the second assembly 26 and is also aligned along the second axis of rotation X26.

[0291] Alternatively, not shown, the coupling device 33 comprises an input shaft, which is connected to the second end 21b of the rotor 21, and an output shaft, which is connected to the input shaft 25 of one of the first and second clutches 23a, 23b. The first end of the rotor 21 of the electric motor 16 is connected directly to the first clutch 23a. Furthermore, the second end 21b of the rotor 21 of the electric motor 16 is connected to the second clutch 23b via the coupling device 33. In this case, the electromechanical actuator 11 may further comprise a connecting shaft.Furthermore, in particular in the assembled configuration of the electromechanical actuator 11, the connecting shaft is coupled, in other words is configured to be coupled, on the one hand, to the coupling device 33, in particular to the output shaft of the coupling device 33, and, on the other hand, to the second clutch 23b, in particular to the input shaft 25 of the second clutch 23b. Advantageously, the connecting shaft is a rigid shaft. Advantageously, . the electromechanical actuator 11 further comprises at least a first cardan joint and a second cardan joint. The coupling device 33 is assembled, in particular in the assembled configuration of the electromechanical actuator 11, with the connecting shaft by means of the first cardan joint. Furthermore, the second clutch 23b is assembled, in particular in the assembled configuration of the electromechanical actuator 11, with the connecting shaft by means of the second cardan joint. Thus, the first and second cardan joints make it possible to ensure torque transmission between the coupling device 33 and the second clutch 23b via the connecting shaft, while accommodating positioning dispersions between the output shaft of the coupling device 33 and the input shaft 25 of the second clutch 23b.Advantageously, along the second axis of rotation X26, at least a portion of the control unit 15 is arranged between the coupling device 33 and the second clutch 23b, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the connecting shaft extends, along the second axis of rotation X26, through a zone of the electromechanical actuator 11 comprising the control unit 15. This zone of the electromechanical actuator 11 is defined, along the second axis of rotation X26, between the coupling device 33 and the second clutch 23b.

[0292] A movement generated by the electric motor 16 is transmitted to the first drive shaft 9a, via the first clutch 23a, the first reduction gear 19a and the first coupling element 20a, if the first clutch 23a is in the engaged position. This same movement generated by the electric motor 16 is also transmitted to the second drive shaft 9b, via the coupling device 33, the second clutch 23b, the second reduction gear 19a and the second coupling element 20a, if the second clutch 23b is in the engaged position.

[0293] Thus the electromechanical actuator 11 makes it possible, using this single electric motor 16 and the control unit 15, to drive the screen 2 according to several possibilities.

[0294] When the first and second clutches 23a, 23b are in the engaged position and the electric motor 16 is electrically activated, the movement generated by the electric motor 16 is transmitted to the first and second drive shafts 9a, 9b, which are then rotated respectively about the first and second axes of rotation Xa, Xb. In this case, the first and second movable bars 8a, 8b simultaneously perform the same vertical movement. This makes it possible to choose the position of a zone for concealing the opening.

[0295] When only the first clutch 23a is in the engaged position and the electric motor 16 is electrically activated, the movement generated by the motor electric 16 is transmitted only to the first drive shaft 9a. In this case, only the first movable bar 8a moves vertically, while the second movable bar 8b remains in position, i.e. is stationary. Thus, it is the height of the occultation zone which is modified relative to the opening.

[0296] Similarly, when only the second clutch 23b is in the engaged position and the electric motor 16 is electrically activated, the movement generated by the electric motor 16 is transmitted only to the second drive shaft 9b. In this case, only the second movable bar 8b moves vertically, while the first movable bar 8a remains in position, in other words is stationary. Thus, it is the height of the occultation zone which is modified relative to the opening.

[0297] The first and second movable bars 8a, 8b can therefore be moved vertically by the electromechanical actuator 11 separately or simultaneously.

[0298] The electromechanical actuator 11 further comprises at least one coupling member 40a, 40b. The or each coupling member 40a, 40b is configured to mechanically connect or couple, in other words mechanically connects or couples, a first transmission shaft to a second transmission shaft. The first transmission shaft is configured to be driven in rotation, in other words is driven in rotation, by the electric motor 16.

[0299] Here, the electromechanical actuator 11 comprises a first coupling member 40a and a second coupling member 40b.

[0300] Here, the first transmission shaft of the first coupling member 40a is the output shaft 41 of the first clutch 23a and the second transmission shaft is the input shaft 42 of the first reducer 19a. Similarly, the first transmission shaft of the second coupling member 40b is the output shaft 41 of the second clutch 23b and the second transmission shaft is the input shaft 42 of the second reducer 19b.

[0301] As a variant, not shown, the first transmission shaft is the first end of the rotor 21, respectively the second end 21b of the rotor 21, and the second transmission shaft is either the input shaft 42 of the first reducer 19a, respectively of the second reducer 19b, or the input shaft 25 of the first clutch 23a, respectively of the second clutch 23b.

[0302] In another variant, not shown, the first transmission shaft is the output shaft of the first reducer 19a, respectively of the second reducer 19b, and the second transmission shaft is either the first end of the first coupling element 20a, respectively the first end of the second coupling element 20b, or the first end of the first torque transmission device 10a, respectively the first end of the second device 10b torque transmission.

[0303] Each of the first and second coupling members 40a, 40b comprises a first end 40c and a second end 40d, the second end 40d being opposite the first end 40c.

[0304] Advantageously, the first and second counting devices 32a, 32b and the first and second coupling members 40a, 40b are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0305] Similarly, the first and second clutches 23a, 23b, the first and second reducers 19a, 19b and the coupling device 33 are mounted, in other words are housed, inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0306] Here, the first coupling member 40a and the second coupling member 40b belonging to the electromechanical actuator 11 illustrated in Figures 1 and 2 are identical.

[0307] The first coupling member 40a according to the embodiment of the invention will now be described in more detail and with reference to FIGS. 3 to 6. This description also applies to the second coupling member 40b.

[0308] The first coupling member 40a comprises a bore 46 and a groove 47.

[0309] The bore 46 opens at each of the first and second ends 40c, 40d of the first coupling member 40a. The first transmission shaft 41 is configured to be fitted, in other words is fitted, in the bore 46 at the first end 40c of the first coupling member 40a, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the second transmission shaft 42 is configured to be fitted, in other words is fitted, in the bore 46 at the second end 40d of the first coupling member 40a, in particular in the assembled configuration of the electromechanical actuator 11.

[0310] Here, the bore 46 has a non-circular section.

[0311] Advantageously, the section of each of the first and second transmission shafts 41, 42 is configured to cooperate, in other words cooperate, respectively with the section of the bore 46, at the first and second ends 40c, 40d of the first coupling member 40a.

[0312] Thus, the section of each of the first and second transmission shafts 41, 42 is complementary to the section of the bore 46, at the level of the first and second ends 40c, 40d of the first coupling member 40a.

[0313] In this way, when the first and second transmission shafts 41, 42 are fitted into the bore 46, the first and second transmission shafts 41, 42 are integral in rotation, in particular around the first axis of rotation X22.

[0314] The encoder wheel 43 is fitted, in other words is configured to be fitted, inside the groove 47, in particular in the assembled configuration of the electromechanical actuator 11.

[0315] Here, the encoder wheel 43 is produced in the form of a cylindrical ring.

[0316] The groove 47 comprises a first surface 47a and a second surface 47b.

[0317] Here, the first surface 47a of the groove 47 is annular. Furthermore, the second surface 47b of groove 47 is truncated cone-shaped.

[0318] The shape of the second surface of the groove is not limiting and may be different. It may be, for example, annular in shape.

[0319] The first surface 47a is of larger diameter than the second surface 47b.

[0320] Advantageously, the first surface 47a of the groove 47 has a first diameter 047a. The second surface 47b of the groove 47 has a second maximum diameter 047b. Furthermore, the first diameter 047a is larger than the second maximum diameter 047b.

[0321] The encoder wheel 43 is held, in other words is configured to be held, inside the groove 47 by clamping the outer surface 43a of the encoder wheel 43 against the first surface 47a of the groove 47, in particular in the assembled configuration of the electromechanical actuator 11.

[0322] Thus, this construction of the electromechanical actuator 11 makes it possible to couple the first transmission shaft 41 with the second transmission shaft 42 by means of the first coupling member 40a, which supports the magnetic encoder wheel 43 of the first counting device 32a, while avoiding a risk of breakage of the encoder wheel 43, when fitting the first and second transmission shafts 41, 42 inside the bore 46 of the first coupling member 40a.

[0323] In this way, this clamping of the encoder wheel 43 against the first surface 47a of the groove 47 of the first coupling member 40a generates compressive stresses inside the encoder wheel 43, which are less likely to cause the latter to break, compared to the known solution of the prior art described previously.

[0324] Furthermore, a method of assembling the encoder wheel 43 inside the groove 47 of the first coupling member 40a is simpler to implement, compared to that of the known solution of the prior art described previously.

[0325] Consequently, this assembly method presents a lower risk from a quality point of view, in particular to respect manufacturing tolerances, and is less expensive, compared to that of the known solution of the prior art described previously.

[0326] Furthermore, by being housed in the groove 47, the encoder wheel 43 is mechanically protected only against shocks.

[0327] Advantageously, the first coupling member 40a is made of a plastic material, which may be, for example, PolyOxyMethylene, with the acronym POM, PolyAmide 6, also called polycaprolactam, with the acronym PA 6, or PolyAmide 6.6, also called polyhexamethylene adipamide, with the acronym PA 6.6.

[0328] Advantageously, the encoder wheel 43 is made of sintered steel.

[0329] Advantageously, the inner surface 43b of the encoder wheel 43 has an inner diameter 043int. Furthermore, the inner diameter 043int is strictly larger than the second maximum diameter 047b.

[0330] Thus, the inner surface 43b of the encoder wheel 43 is not in contact with the second surface 47b of the groove 47, so as to guarantee a clearance J between the inner surface 43b of the encoder wheel 43 and the second surface 47b of the groove 47.

[0331] Thanks to the present invention, this construction of the electromechanical actuator makes it possible to couple the first transmission shaft with the second transmission shaft by means of the coupling member, which supports the magnetic encoder wheel of the counting device, while avoiding a risk of breakage of the encoder wheel, when fitting the first and second transmission shafts inside the bore of the coupling member.

[0332] In this way, this clamping of the encoder wheel against the first surface of the groove of the coupling member generates compressive stresses inside the encoder wheel, which are less likely to cause the latter to break, compared to the known solution of the prior art described previously.

[0333] Numerous modifications can be made to the embodiments described above without departing from the scope of the invention.

[0334] As a variant, not shown, the occulting device 3 comprises only one movable bar, namely either the first movable bar 8a or the second movable bar 8b.

[0335] As a variant, not shown, the occulting device 3 comprises a number of movable bars greater than or equal to three, which can all be moved by means of the electromechanical actuator 11, respectively by means of a reducer, a torque transmission device and, possibly, a clutch, a counting device and a brake.

[0336] Alternatively, not shown, the first and second cords 4a, 4b, as well as the third and fourth cords 4c, 4d, in particular their ends, are fixed to a window or door structure or to a wall of the building, in particular by means of holding elements. Thus, the concealment device 3 may be without a housing, in other words a rail, arranged in the upper part or above the opening. In this case, the holding elements are configured to be fixed, in other words, are fixed to the window or door structure or to the building wall by means of fixing screws, not shown. The fixing screws pass through through holes provided in the holding elements and are screwed either into dowels, not shown, housed in the window or door structure or in the building wall or directly into the window or door structure or in the building wall. Furthermore, the length of the first, second, third and fourth cords 4a, 4b, 4c, 4d is provided so that they are permanently tensioned relative to the window or door structure or to the building wall, so as to allow the first and second movable bars 8a, 8b to move along them.In this case, the motorized drive device 5, in particular the electromechanical actuator 11, is mounted, in other words is housed, inside one of the movable bars 8a, 8b, in particular in the assembled configuration of the occulting device 3.

[0337] In another variant, not shown, the first, second, third and fourth cords 4a, 4b, 4c, 4d can be kept taut by means of one or more elastic return elements, such as, for example, one or more springs.

[0338] In another variant, the first and second drive shafts 9a, 9b are coaxial. In this case, the first and second drive shafts 9a, 9b are located on either side of the electromechanical actuator 11. In other words, the first coupling element 20a is arranged at the first end 11a of the electromechanical actuator 11 and the second coupling element 20b is arranged at the second end 11b of the electromechanical actuator 11. Thus, the two outputs of the electromechanical actuator 11 are arranged on each side of the electromechanical actuator 11, in particular of the casing 17. Furthermore, the first and second drive shafts 9a, 9b are arranged on each side of the electromechanical actuator 11 like the first and second coupling elements 20a, 20b.

[0339] Alternatively, the electric motor 16 of the electromechanical actuator 11 may be of the asynchronous type.

[0340] As a variant, not shown, the electromechanical actuator 11 further comprises at least one other electric motor. Thus, the electromechanical actuator 11 comprises the electric motor 16, which may be called the first electric motor, and a second electric motor, in particular identical. In this case, the electromechanical actuator 11 is devoid of a coupling device 33 and first and second clutches 23a, 23b. Thus, the first electric motor 16 is configured to drive in rotation, in other words drives in rotation, the first coupling element 20a, via the first reducer 19a and the first torque transmission device 10a, and the second electric motor is configured to rotate, i.e. rotates, the second coupling element 20b, via the second reducer 19b and the second torque transmission device 10b. In this case, the first assembly 22 comprises the first electric motor 16, which is aligned along the first axis of rotation X22, and the second assembly 26 comprises the second electric motor, which is aligned along the second axis of rotation X26.

[0341] Whatever the embodiment, one or each of the first, second, third and fourth cords 4a, 4b, 4c, 4d can be replaced by a chain.

[0342] Furthermore, the embodiments and variations contemplated may be combined to generate new embodiments of the invention, without departing from the scope of the invention.

Claims

Claims

1. Electromechanical actuator (11) of a concealment device (3), the electromechanical actuator (11) comprising at least: - an electric motor (16), - a first transmission shaft (41), the first transmission shaft (41) being driven in rotation by the electric motor (16), - a second transmission shaft (42), - a coupling member (40a, 40b), the coupling member (40a, 40b) mechanically connecting the first transmission shaft (41) to the second transmission shaft (42), the coupling member (40a, 40b) comprising a first end (40c) and a second end (40d), the second end (40d) being opposite the first end (40c), and - a counting device (32a, 32b), the counting device (32a, 32b) being of the magnetic type, the counting device (32a, 32b) comprising at least: - a code wheel (43), the code wheel (43) being magnetic,the encoder wheel (43) comprising an outer surface (43a) and an inner surface (43b), and - at least one sensor (44) for detecting the position of the encoder wheel (43), the coupling member (40a, 40b) comprising at least: - a bore (46), the bore (46) opening at each of the first and second ends (40c, 40d) of the coupling member (40a, 40b), the first transmission shaft (41) being fitted into the bore (46) at the first end (40c) of the coupling member (40a, 40b) and the second transmission shaft (42) being fitted into the bore (46) at the second end (40d) of the coupling member (40a, 40b), and - a groove (47), the encoder wheel (43) being fitted inside the groove (47), the groove (47) comprising a first surface (47a) and a second surface (47b), the first surface (47a) being of larger diameter than the second surface (47b),characterized in that the encoder wheel (43) is held inside the groove (46) by clamping the outer surface (43a) of the encoder wheel (43) against the first surface (47a) of the groove (47).,

2. Electromechanical actuator (11) of a concealment device (3) according to claim 1, characterized in that the coupling member (40a, 40b) is made of a plastic material.

3. Electromechanical actuator (11) of a concealment device (3) according to claim 1 or claim 2, characterized in that the encoder wheel (43) is made of sintered steel.

4. Electromechanical actuator (11) of a concealment device (3) according to any one of claims 1 to 3, characterized in that the first surface (47a) of the groove (47) has a first diameter (047a), in that the second surface (47b) of the groove (47) has a second maximum diameter (047b), in that the first diameter (047a) is larger than the second maximum diameter (047b), in that the inner surface (43b) of the encoder wheel (43) has an inner diameter (043int), and in that the inner diameter (043int) is strictly larger than the second maximum diameter (047).

5. Electromechanical actuator (11) of a concealment device (3) according to any one of claims 1 to 4, characterized in that the electromechanical actuator (11) further comprises: - a casing (17), the electric motor (16), the counting device (32a, 32b) and the coupling member (40a, 40b) being mounted inside the casing (17), - at least one electronic card (45), on which the or each sensor (44) is assembled, and in that the electronic card (45) is held in position inside the casing (17) by means of mounting elements (52).

6. Electromechanical actuator (11) of a concealment device (3) according to claim 5, characterized in that the electromechanical actuator (11) further comprises a control unit (15), the control unit (15) comprising another electronic card (30), in that the electronic card (45) is electrically connected to the other electronic card (30) by means of an electrical connection cable, and in that the electrical connection cable extends between the electronic card (45) and the other electronic card (30) while being arranged between the casing (17) and housings of other members (23a, 23b, 33) of the electromechanical actuator (11).

7. A screening device (3), the screening device (3) comprising at least: - a screen (2), the screen (2) comprising a first end (2a) and a second end (2b), the second end (2b) being opposite the first end (2a), - a first movable bar (8a), the first end (2a) of the screen (2) being connected to the first movable bar (8a), and - a motorized drive device (5), the motorized drive device (5) being configured to drive the screen (2) in movement, the motorized drive device (5) comprising at least: - an electromechanical actuator (11) according to any one of claims 1 to 6, the electromechanical actuator (11) being configured to drive the first movable bar (8a) in movement.

8. A concealing device (3) according to claim 7, characterized in that the concealing device (3) further comprises: - a first cord or a first chain (4a), - a second cord or a second chain (4b), - a first drive arrangement (6a), the first drive arrangement (6a) being configured to cooperate with the first cord or the first chain (4a), and - a second drive arrangement (6b), the second drive arrangement (6b) being configured to cooperate with the second cord or the second chain (4b), and in that the electromechanical actuator (11) is configured to drive the first movable bar (8a) in movement by means of the first and second cords or chains (4a, 4b).

9. Concealing device (3) according to claim 7 or claim 8, characterized in that the concealing device (3) further comprises: - a second movable bar (8b), the second end (2b) of the screen (2) being connected to the second movable bar (8b), and in that the electromechanical actuator (11) is configured to drive the second movable bar (8b) in movement.

10. A concealing device (3) according to claim 9, characterized in that the concealing device (3) further comprises: - a third cord or a third chain (4c), - a fourth cord or a fourth chain (4d), - a third drive arrangement (6c), the third arrangement drive (6c) being configured to cooperate with the third cord or the third chain (4c), and - a fourth drive arrangement (6d), the fourth drive arrangement (6d) being configured to cooperate with the fourth cord or the fourth chain (4d), and in that the electromechanical actuator (11) is configured to drive the second movable bar (8b) in movement by means of the third and fourth cords or chains (4c, 4d).