Electromechanical actuator and shading device comprising such an electromechanical actuator

Abstract

An electromechanical actuator and a covering device comprising such an electromechanical actuator. An electromechanical actuator comprises an electric motor, a gearbox, a housing, an output shaft, and an end cover. The housing comprises at least one notch, the notch or notches being provided at one end of the housing. The end cover (49) comprises at least one notch (55). The notch or notches (55) are fitted into the notch or notches. The notch or notches (55) comprise at least a first lateral edge (55a) and a second lateral edge (55b). The notch or notches (55) comprise a median plane (P) passing through an axis of rotation (X) of the electromechanical actuator. Each of the first and second lateral edges (55a, 55b) of the notch or notches (55) is inclined, with respect to the median plane (P), by an angle (α) whose value is between 5° and 45°. Figure for the abbreviation: Figure 8.

Description

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

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

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

[0003] In general, the present invention relates to the field of blackout devices comprising a motorized drive device moving a screen, between at least a first position and at least a second position.

[0004] A motorized drive device includes an electromechanical actuator of a movable closing, obscuring or sun protection element such as a shutter, a door, a grille, a blind or any other equivalent material, hereinafter referred to as a screen.

[0005] Document WO 2019 / 072841 A1, which describes an electromechanical actuator for a shutter device, is already known. The electromechanical actuator comprises an electric motor, a gearbox, a housing, an output shaft, and an end cover. The electric motor and the gearbox are mounted inside the housing. The housing comprises a first end and a second end, the second end being opposite the first end. The end cover is located at the second end of the housing. The housing comprises an inner surface and an outer surface, the inner surface being opposite the outer surface. The housing comprises two notches. Each notch is formed at the second end of the housing. The end cover comprises two notches. Each notch is fitted into one of the notches.Each notch comprises a first lateral edge and a second lateral edge, the second lateral edge being opposite the first lateral edge. The electromechanical actuator comprises a rotation axis passing through a center of the components mounted at least partially inside the housing. Each notch comprises a median plane passing through the rotation axis. Furthermore, each of the first and second lateral edges of each notch is parallel to the median plane. This electromechanical actuator is generally satisfactory.

[0006] However, this electromechanical actuator has the disadvantage that the reducer is fixed to the housing by one or more pin-type or screw-type fixing elements or of the retaining notch type, to allow torque transmission from the reducer to the output shaft, during electrical activation of the electric motor.

[0007] Thus, as each of the first and second lateral edges of each notch is parallel to the median plane, an absence of this or these pin-type, screw-type or retaining notch-type fixing elements between the reducer and the housing, induces that the reducer is driven in rotation inside the housing, around an axis of rotation of the electromechanical actuator, during the electrical activation of the electric motor.

[0008] In addition, when the casing has a low thickness, it deforms during the electrical activation of the electric motor.

[0009] Consequently, each notch of the end cover comes out of the notch in the housing, into which this notch is previously fitted, by passing under the inner surface of the housing.

[0010] To allow the fixing of the pin-type, screw-type or retaining notch-type fixing element(s) between the reducer and the housing, the housing includes either one or more holes, or one or more deformations.

[0011] Thus, the cost of obtaining the electromechanical actuator is high, due to additional manufacturing operations and the complexity of implementing them, as well as due to the control operations necessary to validate the conformity of the housing and the fixing of the reducer in the housing.

[0012] In addition, the production defect rate of the electromechanical actuator is amplified, in particular due to aesthetic defects of the housing, since it is covered with a layer of paint which may be flaking, positioning defects of either the hole or holes in the housing, or deformations of the housing, or the presence of chips from the housing when drilling it.

[0013] Furthermore, the housing and the reducer are only used for a single assembly of the electromechanical actuator.

[0014] Consequently, the housing and the reducer cannot be reused for a second assembly of the electromechanical actuator, in particular following a repair thereof.

[0015] The present invention aims to overcome the aforementioned drawbacks and to provide an electromechanical actuator for a shutter device, as well as a shutter device comprising such an electromechanical actuator, making it possible to improve the mechanical strength of an end cover on a housing and to eliminate the need for one or more fixing elements of a gearbox relative to the housing, while ensuring satisfactory torque transmission from the gearbox to an output shaft during the electrical activation of an electric motor

[0016] In this regard, the present invention relates, according to a first aspect, to an electromechanical actuator of a blackout device,

[0017] the electromechanical actuator comprising at least:

[0018] - an electric motor,

[0019] - a reducer,

[0020] - a housing, the electric motor and the gearbox being mounted inside the housing,

[0021] - an output shaft, the reducer being assembled with the output shaft, and

[0022] - an end cover,

[0023] the housing comprising:

[0024] - a first end and a second end, the second end being opposite the first end, the end cover being positioned at the second end of the casing,

[0025] - an inner surface and an outer surface, the inner surface being opposite to the outer surface, and

[0026] - at least one notch, the notch or notches being provided at the level of the second end of the casing,

[0027] the end cover comprising at least:

[0028] - a notch, the notch or each notch being fitted into the notch or one of the notches, the or each notch comprising at least a first lateral edge and a second lateral edge, the second lateral edge being opposite the first lateral edge,

[0029] the electromechanical actuator comprising an axis of rotation passing through a center of the organs mounted at least partly inside the housing, the notch or each notch comprising a median plane passing through the axis of rotation.

[0030] According to the invention, each of the first and second lateral edges of the notch or of each notch is inclined, with respect to the median plane, at an angle whose value is between 5° and 45°.

[0031] Thus, the inclination of each of the first and second lateral edges of the end cover or notch, relative to the median plane, makes it possible to improve the mechanical holding of the end cover on the housing and to do away with one or more fixing elements of the reducer relative to the housing, in particular of the pin type, screw type or retaining notch type, so as to guarantee a transmission of torque from the reducer to the output shaft, during the electrical activation of the electric motor.

[0032] In this way, the inclination of each of the first and second lateral edges of the or each notch of the end cover, relative to the median plane, prevents the reducer from being driven into rotation inside the housing, around the axis of rotation, during the electrical activation of the electric motor.

[0033] Therefore, even in the case where the thickness of the housing is low, the notch or each notch of the end cover remains inside the notch or one of the notches of the housing, in which this notch is fitted, without passing under the inner surface of the housing, during the electrical activation of the electric motor.

[0034] In addition, the absence of one or more fixing elements, in particular of the pin type, screw type or retaining notch type, between the reducer and the housing makes it possible to avoid either one or more holes in the housing, or one or more deformations of the housing.

[0035] In this way, the cost of obtaining the electromechanical actuator is lower and the production defect rate of the electromechanical actuator is minimized, since the manufacture of the housing does not require drilling or deformation operations to fix the reducer to the housing.

[0036] Furthermore, the housing and the reducer can be reused for another assembly of the electromechanical actuator, in particular following a repair thereof.

[0037] According to an advantageous feature of the invention, the end cover further comprises a body, the body comprising an external surface. Furthermore, the external surface of the body is mounted against the internal surface of the housing with a tight fit.

[0038] According to another advantageous feature of the invention, the notch or notches extend from the outer surface of the body in a radial direction to the axis of rotation and outwards from the end cover. The end cover further comprises a junction zone located between the outer surface of the body and each of the first and second lateral edges of the notch or notches. In addition, the body comprises a flat surface formed at each junction zone.

[0039] According to another advantageous feature of the invention, the housing is a tube having a circular cross-section. The housing is coated with a layer of paint deposited at least on the outer surface of the housing. The notch or notches of the end cover comprise an outer surface. Furthermore, a radius value between the axis of rotation and the outer surface of the notch or notches is greater than or equal to a radius value between the axis of rotation and the outer surface of the housing, the outer surface of the housing being the unpainted outer surface of the housing.

[0040] According to another advantageous feature of the invention, the housing has a defined thickness between its inner and outer surfaces. Furthermore, the thickness of the housing is less than or equal to one and a half millimeters.

[0041] According to another advantageous feature of the invention, the end cover and the housing are fastened to each other by means of first fastening elements. Furthermore, the first fastening elements of the end cover to the housing are elastic snap-fit ​​fastening elements.

[0042] According to another advantageous feature of the invention, the first fastening elements constitute a positioning stop for the end cover relative to the housing, at the level of the second end of the housing.

[0043] According to another advantageous feature of the invention, the end cover is fixed to the reducer by means of second fixing elements.

[0044] According to another advantageous feature of the invention, the reducer comprises first notches and first tabs arranged alternately around the axis of rotation. The end cover comprises second tabs and second notches arranged alternately around the axis of rotation. Furthermore, the first notches and first tabs of the reducer are nested within the second tabs and second notches of the end cover.

[0045] According to a second aspect, the present invention relates to a blackout device,

[0046] the blackout device comprising at least:

[0047] - a screen, and

[0048] - an electromechanical actuator according to the invention and as mentioned above- above, the screen is driven in movement by the electromechanical actuator.

[0049] This occulting device has characteristics and advantages similar to those described above, in relation to the electromechanical actuator according to the invention.

[0050] Other features and advantages of the invention will become apparent from the following description, made with reference to the accompanying drawings, given by way of non-limiting examples and in which:

[0051] [Fig.1] [Fig.1] is a schematic cross-sectional view of a blackout installation comprising a blackout device according to an embodiment of the invention;

[0052] [Fig.2] [Fig.2] is a schematic perspective view of the installation of occultation illustrated in [Fig.1];

[0053] [Fig.3] [Fig.3] is a schematic perspective view of an actuator electromechanical of the occulting device illustrated in figures 1 and 2;

[0054] [Fig.4] [Fig.4] is a schematic partial cross-sectional view of the actuator electromechanical illustrated in [Fig.3], according to a cutting plane passing through an axis of rotation of the electromechanical actuator, this schematic view being interrupted locally at the level of two parts of the electromechanical actuator, and a housing of the electromechanical actuator having been removed;

[0055] [Fig. 5] [Fig. 5] is a schematic perspective and exploded view of a part of the electromechanical actuator illustrated in figures 3 and 4, representing part of a housing, part of a reducer, an output shaft and an end cover;

[0056] [Fig.6] [Fig.6] is a first schematic cross-sectional and perspective view of a part of the electromechanical actuator illustrated in Figures 3 to 5, according to a first orientation of a cutting plane passing through the axis of rotation of the electromechanical actuator, representing the assembly of the end cover with respect to the housing, the reducer and the output shaft;

[0057] [Fig. 7] [Fig. 7] is a second schematic cross-sectional and perspective view of a portion of the electromechanical actuator illustrated in Figures 3 to 6, according to a second orientation of the cutting plane passing through the axis of rotation of the electromechanical actuator, representing the assembly of the end cover relative to the housing, the reducer, and the output shaft, the second orientation of the cutting plane being orthogonal to the first orientation of the cutting plane; and

[0058] [Fig.8] [Fig.8] is a schematic front view of the end cover illustrated in figures 3 to 7.

[0059] A blackout installation 6 according to an embodiment of the invention is described first, with reference to Figures 1 and 2. This blackout installation 6 comprises at least one blackout device 3. This blackout installation 6, installed in a building B, has at least one opening 1, in which a window 40 or a door (not shown) is located. This blackout installation 6 is equipped with a screen 2 belonging to the blackout device 3, in particular a motorized blind. The screen 2 is configured to move, that is, moves, in relation to the window 40 or the door.

[0060] A shutter installation and a sun protection installation are examples of shading installations. Similarly, a shutter device and a sun protection device are examples of shading devices.

[0061] The installation for closing, shading or sun protection is hereafter referred to as "shading installation" 6.

[0062] The closing, obscuring or sun protection device is hereafter referred to as the "obscuring device" 3. The obscuring device 3 includes the screen 2.

[0063] The shading device 3 may be a blind, in particular a blind comprising a roller fabric, a pleated or honeycomb fabric, or adjustable slats, a roller shutter, or a roller door. The present invention applies to all types of shading devices 3, which may be located either inside building B, or outside building B, or with a first part of the shading devices 3 located inside building B and a second part of the shading devices 3 located outside building B.

[0064] Here, the blackout installation 6 includes the blackout device 3.

[0065] With reference to figures 1 and 2, a motorized roller blind is described which forms a blackout device 3.

[0066] Advantageously, the occulting device 3 includes a motorized drive device 5. The motorized drive device 5 includes an electromechanical actuator 11 illustrated in figures 3 and 4.

[0067] The screen 2 is configured to be moved, in other words is moved, by means of the motorized drive device 5 and, more particularly, of the electromechanical actuator IL

[0068] Here, the motorized drive device 5 and, consequently, the shading device 3 further comprises a winding tube 4. Furthermore, the winding tube 4 is arranged to be driven in rotation by the electromechanical actuator IL

[0069] Here, the screen 2 is rollable onto the winding tube 4.

[0070] Thus, the screen 2 of the shading device 3 is wound onto or unwound around the winding tube 4, the winding tube 4 being driven by the motorized drive device 5, in particular by the electromechanical actuator IL

[0071] In this way, the screen 2 is mobile between a rolled-up position, in particular high, and an unrolled position, in particular low, and vice versa.

[0072] The screen 2 of the shading device 3 is a closing, shading and / or sun protection screen, rolling and unrolling around the winding tube 4, the inner diameter of which is greater than the outer diameter of the electromechanical actuator 11, so that the electromechanical actuator 11 can be inserted into the winding tube 4, when assembling the shading device 3.

[0073] Advantageously, the occultation device 3 includes a retaining device 9, 23.

[0074] Advantageously, the retaining device 9, 23 can include two supports 23. A support 23 is disposed at each end of the winding tube 4, particularly in an assembled configuration of the blackout device 3.

[0075] Thus, the winding tube 4 is held by means of the supports 23. Only one of the supports 23 is visible in [Fig. 1] and they are not shown in [Fig. 2]. The supports 23 allow the shading device 3 to be mechanically linked to the structure of building B, in particular to a wall M of building B.

[0076] Advantageously, the retaining device 9, 23 may include a box 9. In addition, the winding tube 4 and at least part of the screen 2 are housed inside the box 9, in particular in the assembled configuration of the blackout device 3.

[0077] Generally, the box 9 is positioned above the opening 1, or in the upper part of the opening 1.

[0078] Here and as illustrated in [Fig.1], the supports 23 are also housed inside the box 9.

[0079] Advantageously, the box 9 comprises two cheeks 10, as illustrated in [Fig.2]. One cheek 10 is disposed at each end of the box 9, in particular in the assembled configuration of the shading device 3.

[0080] Alternatively, shown in [Fig.2], the winding tube 4 is held via the box 9, in particular via the cheeks 10 of the box 9, without using supports, such as the supports 23 mentioned above.

[0081] Advantageously, the shading device 3 may also include two side guides 26, as illustrated only in [Fig. 2]. Each side guide 26 includes a groove 29. Each groove 29 of one of the side guides 26 cooperates, that is to say, is configured to cooperate, with a side edge 2a of the screen 2, particularly in the assembled configuration of the shading device 3, so as to guide the screen 2 during the winding and unwinding of the screen 2 around the winding tube 4.

[0082] The electromechanical actuator 11 is, for example, of the tubular type. This allows the winding tube 4 to be rotated around an axis of rotation X, so as to move, in particular unwind or wind up, the screen 2 of the occulting device 3.

[0083] In an assembled state of the occulting device 3, the electromechanical actuator 11 is inserted into the winding tube 4.

[0084] Advantageously, the occulting device 3 further includes a load bar 8 for exerting tension on the screen 2.

[0085] The roller blind, which forms the blackout device 3, comprises a fabric, forming the screen 2 of the roller blind 3. A first end of the screen 2, in particular the upper end of the screen 2, in the assembled configuration of the blackout device 3, is fixed to the roller tube 4. In addition, a second end of the screen 2, in particular the lower end of the screen 2, in the assembled configuration of the blackout device 3, is fixed to the load bar 8.

[0086] Here, the fabric forming the screen 2 is made from a textile material.

[0087] In one embodiment, not shown, the first end of the screen 2 presents a hem through which a rod, in particular made of plastic, is positioned. This hem, made at the first end of the screen 2, is obtained by means of a seam in the fabric forming the screen 2. When assembling the screen 2 onto the winding tube 4, the hem and the rod located at the first end of the screen 2 are inserted by sliding into a groove made on the outer face of the winding tube 4, in particular along the entire length of the winding tube 4, so as to secure the screen 2 to the winding tube 4 and to allow the screen 2 to be wound and unwound around the winding tube 4.

[0088] The method of attaching the screen 2 to the winding tube 4 is not limiting and may vary. It may be implemented, for example, by means of an adhesive or one or more joints attached, in particular by screwing or riveting, to the winding tube 4.

[0089] Regardless of the embodiment, the first end of the screen 2 is positioned at the level of the retaining device 9, 23.

[0090] In the case of a roller blind, the rolled-up high position corresponds to a predetermined upper end position, or to the weight bar 8 of the screen 2 being pressed against an edge of the casing 9 of the roller blind 3, and the unrolled low position corresponds to a predetermined lower end position, or to the weight bar 8 of the screen 2 being pressed against a threshold 7 of the opening 1, or to the complete unrolling of the screen 2.

[0091] Advantageously, the motorized drive device 5 is controlled by a control unit. The control unit can be, for example, a local control unit 12 or a central control unit 13.

[0092] Advantageously, the local control unit 12 can be connected, by wired or wireless link, with the central control unit 13.

[0093] Advantageously, the central control unit 13 can control the local control unit 12, as well as other similar local control units distributed throughout building B.

[0094] The motorized drive device 5 is preferably configured to execute movement commands, in particular unwinding or rolling, of the screen 2 of the blackout device 3, which can be issued, in particular, by the local control unit 12 or the central control unit 13.

[0095] The blackout installation 6 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.

[0096] The motorized drive device 5, including the electromechanical actuator 11, belonging to the blackout installation 6 and, more particularly, to the blackout device 3 illustrated in Figures 1 and 2, is now described in more detail with reference to Figures 2 to 4.

[0097] The electromechanical actuator 11 comprises a housing 17, in particular tubular, an electric motor 16, a reducer 19 and an output shaft 20.

[0098] Here, the housing 17 is hollow. The housing 17 comprises a first end 17a and a second end 17b. The second end 17b is opposite the first end 17a.

[0099] Here, the housing 17 of the electromechanical actuator 11 is cylindrical in shape, in particular of revolution around the axis of rotation X, and is open at each of its ends 17a, 17b.

[0100] Advantageously, the housing 17 is a tube having a circular cross-section.

[0101] Here, the housing 17 is made of a metallic material.

[0102] The material of the electromechanical actuator housing is not limiting and may be different. In particular, it may be a plastic material.

[0103] Advantageously, the housing 17 has a thickness E.

[0104] Advantageously, the housing 17 comprises an inner surface 17c and a surface exterior 17d. The interior surface 17c is opposite the exterior surface 17d.

[0105] Here, the thickness E of the housing 17 is defined by a distance between the inner surface 17c and the outer surface 17d of the housing 17, along a radial direction to the axis of rotation X.

[0106] Advantageously, the housing 17 is covered with a layer of paint, not shown, deposited at least on the outer surface 17d of the housing 17.

[0107] Here, the electric motor 16 and the reducer 19 are housed, in other words mounted, inside the casing 17, in particular in an assembled configuration of the electromechanical actuator 11.

[0108] The electric motor 16 is represented by its casing in [Fig.4], without details on its internal constituent elements.

[0109] Advantageously, the electric motor 16 comprises a rotor and a stator, not shown.

[0110] Advantageously, the rotor and stator are positioned coaxially around the axis of rotation X.

[0111] Advantageously, the electric motor 16 can be of the electronically commutated brushless type, also called "BLDC" (acronym for the Anglo-Saxon term BrushLess Direct Current) or "permanent magnet synchronous", of the direct current type or of the asynchronous type.

[0112] The reducer 19 is assembled, in other words is configured to be assembled, with the output shaft 20, in particular in the assembled configuration of the electromechanical actuator 11.

[0113] Advantageously, the reducer 19 includes at least one reduction stage 37, 38, 39. The reduction stage 37, 38, 39, one of the reduction stages 37, 38, 39 or each of the reduction stages 37, 38, 39 is of epicycloidal type.

[0114] Here and as illustrated in [Fig. 4], the reducer 19 comprises three reduction stages 37, 38, 39. Each of the three reduction stages 37, 38, 39 is of the epicyclic type. The three reduction stages 37, 38, 39 are hereafter referred to as the first reduction stage 37, the second reduction stage 38, and the third reduction stage 39.

[0115] The number of reduction stages of the reducer is not limited. The number of reduction stages can be one, two, or four or more.

[0116] Advantageously, the electromechanical actuator 11 further comprises a brake 25.

[0117] The brake 25 is configured to brake and / or to lock the shaft of output 20 of the electromechanical actuator 11, so as to regulate the rotation speed of the winding tube 4, during a movement of the screen 2, and to keep the winding tube 4 blocked, when the electromechanical actuator 11 is electrically deactivated.

[0118] Advantageously, the brake 25 is housed, in other words mounted, inside the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0119] Here, brake 25 is a spring brake.

[0120] Advantageously, the brake 25 is configured to be disposed, in other words is disposed, between two reduction stages 37, 38, 39, in particular between the first reduction stage 37 and the second reduction stage 38 of the reducer 19, in particular in the assembled configuration of the electromechanical actuator 11, shown in [Fig.4],

[0121] Advantageously, the reducer 19 comprises a first end 19a and a second end 19b. The second end 19b is opposite the first end 19a. The first end 19a of the reducer 19 is positioned opposite the electric motor 16, that is, faces the electric motor 16, particularly in the assembled configuration of the electromechanical actuator 11. Furthermore, the second end 19b of the reducer 19 is positioned opposite the output shaft 20 of the electromechanical actuator 11, that is, faces the output shaft 20 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0122] Here, the first reduction stage 37 is arranged at the first end 19a of the reducer 19. The third reduction stage 39 is arranged at the second end 19b of the reducer 19. In addition, the second reduction stage 38 is arranged between the first reduction stage 37 and the third reduction stage 39 and, more particularly, between the brake 25 and the third reduction stage 39.

[0123] Advantageously, one or each of the first, second and third reduction stages 37, 38, 39 comprises a solar pinion 46 and a plurality of satellite pinions 61, in this case three in number.

[0124] The number of planetary gears in the first, second, and third reduction stages is not limited and may vary. The number of planetary gears in a reduction stage may be two or more.

[0125] Advantageously, the reducer 19 further comprises a housing 47.

[0126] Here and as illustrated in [Fig. 4], the housing 47 comprises a first part 47a and a second part 47b. The first part 47a of the housing 47 is arranged on the side of the first end 19a of the reducer 19. Furthermore, the second part 47b of the housing 47 is arranged on the side of the second end 19b of the reducer 19.

[0127] Advantageously, the first part 47a of the housing 47 is fixed, in other words is configured to be fixed, to the second part 47b of the housing 47, by means of fixing elements 48, in particular in an assembled configuration of the reducer 19. Only the fixing elements 48 of the second part 47b of the housing 47 are shown in [Fig.5].

[0128] Advantageously, the fastening elements 48 are elastic snap-fit ​​fastening elements, two in number and arranged diametrically opposite with respect to a rotation axis X19 of the reducer 19, in other words at 180° to each other, around the rotation axis X19.

[0129] The number and type of fasteners are not limiting and may vary. For example, there may be three fasteners arranged at an angle of 120° to each other around the axis of rotation of the reducer. They may also be, for example, screw-type fasteners.

[0130] Here, the first reduction stage 37 is housed, in other words mounted, in the first part 47a of the housing 47, in particular in the assembled configuration of the reducer 19. In addition, the second and third reduction stages 38, 39 are housed, in other words mounted, in the second part 47b of the housing 47, in particular in the assembled configuration of the reducer 19.

[0131] In an alternative, not shown, the housing 47 is made in one piece. In this case, all the reduction stages 37, 38, 39 of the reducer 19 are housed, in other words mounted, in the same part of the housing 47, in particular in the assembled configuration of the reducer 19.

[0132] In another variant, not shown, the housing 47 comprises as many parts as the reducer 19 comprises reduction stages 37, 38, 39. In this case, each part of the housing 47 is fixed, in other words configured to be fixed, to an adjacent part of the housing 47, by means of fixing elements, in particular in the assembled configuration of the reducer 19.

[0133] Advantageously, in the assembled configuration of the reducer 19, the brake 25 is held, in other words is configured to be held, by the first and second parts 47a, 47b of the housing 47, by means of indexing elements, not shown.

[0134] Advantageously, the indexing elements are rotation-locking elements about the rotation axis X19, such as projecting elements cooperating with correspondingly shaped notches. These indexing elements are two in number and arranged diametrically opposite each other with respect to the axis of rotation X19, in other words 180° to each other, around the axis of rotation X19.

[0135] The number and type of indexing elements are not limiting and may vary. For example, there may be three of them arranged at an angle of 120° to each other around the axis of rotation of the reducer.

[0136] Advantageously, the reducer 19 further comprises an input shaft 43.

[0137] Here and as illustrated in [Fig.4], the input shaft 43 of the reducer 19 is constituted by a shaft of the solar pinion 46 of the first reduction stage 37.

[0138] In an alternative, not shown, the solar pinion 46 of the first reduction stage 37 is carried by the input shaft 43 of the reducer 19.

[0139] Thus, whatever the embodiment example, the solar pinion 46 of the first reduction stage 37 is integral with the input shaft 43 of the reducer 19.

[0140] Advantageously, the reducer 19 further comprises an output shaft 62.

[0141] Here, the output shaft 62 of the reducer 19 is disposed, in other words is configured to be disposed, inside the output shaft 20 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.

[0142] In an alternative, not shown, the output shaft 20 of the electromechanical actuator 11 constitutes the output shaft 62 of the reducer 19.

[0143] Advantageously, the input shaft 43 and the output shaft 62 of the reducer 19 are coaxial, in other words, are configured to be coaxial, particularly in the assembled configuration of the reducer 19.

[0144] Thus, the input shaft 43 and the output shaft 62 of the reducer 19 are arranged along the same axis of rotation, which is also the axis of rotation X19 of the reducer 19, in particular in the assembled configuration of the reducer 19.

[0145] Advantageously, the output shaft 20 of the electromechanical actuator 11 is disposed, in other words is configured to be disposed, in the vicinity of the second end 17b of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0146] Advantageously, the output shaft 20 of the electromechanical actuator 11 is disposed inside the winding tube 4 and at least partly outside the housing 17 of the electromechanical actuator 11.

[0147] Advantageously, one end of the output shaft 20 of the electromechanical actuator 11 is projecting from the housing 17 of the electromechanical actuator 11, in particular from the second end 17b of the housing 17.

[0148] Advantageously, the output shaft 20 of the electromechanical actuator 11 is configured to drive in rotation a linkage element, not shown, connected to the tube winding 4. The connecting element is, for example, made in the form of a wheel.

[0149] When the electromechanical actuator 11 is switched on, the electric motor 16 and the reducer 19 drive the output shaft 20 of the electromechanical actuator 11 into rotation. In addition, the output shaft 20 of the electromechanical actuator 11 drives the winding tube 4 into rotation via the connecting element.

[0150] Thus, the winding tube 4 causes the screen 2 of the occulting device 3 to rotate, so as to open or close the opening 1.

[0151] Advantageously, the electromechanical actuator 11 further comprises a torque transmission device 31.

[0152] The torque transmission device 31 is housed, in other words mounted, inside the housing 17 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.

[0153] Here, the input shaft 43 of the reducer 19 is coupled, in other words is configured to be coupled, with the rotor of the electric motor 16 via the torque transmission device 31, in particular in the assembled configuration of the electromechanical actuator 11.

[0154] Control means for the electromechanical actuator 11, enabling the movement of the screen 2 of the occulting device 3, are constituted by at least one control unit 15, in particular an electronic control unit.

[0155] This control unit 15 belongs to the motorized drive device 5 and, more particularly, to the electromechanical actuator 11 and is capable of starting up the electric motor 16 of the electromechanical actuator 11 and, in particular, of enabling the supply of electrical energy to the electric motor 16.

[0156] Thus, the control unit 15 controls, in particular, the electric motor 16, so as to open or close the screen 2, as described previously.

[0157] The control means for the electromechanical actuator 11 include hardware and / or software means.

[0158] By way of non-limiting example, the material means may include at least one microcontroller 30, as illustrated in [Fig.2].

[0159] Advantageously, the control unit 15 further comprises a first communication module 27, as illustrated in [Fig.2], in particular for receiving control orders, the control orders being issued by an order transmitter, such as the local control unit 12 or the central control unit 13, these orders being intended to control the motorized drive device 5.

[0160] Advantageously, the first communication module 27 of the control unit 15 is of the wireless type. In particular, the first communication module 27 is configured to receive radio control commands.

[0161] Advantageously, the first communication module 27 can also allow the reception of control orders transmitted by wired means.

[0162] 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, located inside building B or outside building B, including, in particular, one or more sensors that can be configured to determine, for example, a temperature, a brightness, or a wind speed, in the case where the weather station is located outside building B.

[0163] 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, as illustrated in [Fig.2], so as to control the electromechanical actuator 11 according to data made available remotely via a communication network, in particular an internet network that can be connected to the server 28.

[0164] The control unit 15 can be operated from the local control unit 12 and / or the central control unit 13. The local control unit 12 and / or the central control unit 13 is equipped with a control keypad. The control keypad of the local control unit 12 or the central control unit 13 includes one or more selection elements 14 and, optionally, one or more display elements 34.

[0165] By way of non-limiting examples, the selection elements may be pushbuttons and / or touch-sensitive keys. The display elements may be light-emitting diodes and / or a display, for example LCD (Liquid Crystal Display) or TFT (Thin Film Transistor). The selection and display elements may also be implemented using a touchscreen.

[0166] Advantageously, the local control unit 12 and / or the central control unit 13 includes at least a second communication module 36.

[0167] Thus, the second communication module 36 of the local control unit 12 or of the central control unit 13 is configured to transmit, in other words, sends out, control orders, in particular by wireless means, for example radioelectric, and / or by wired means.

[0168] In addition, the second communication module 36 of the local control unit 12 or the central control unit 13 can also be configured to receive, In other words, it receives command orders, particularly through the same means.

[0169] 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.

[0170] 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 unidirectionally or bidirectionally.

[0171] Advantageously, the local control unit 12 is a control point, which may be fixed or portable. A fixed control point may be a control box intended to be fixed to a face of the wall M of the building B or to a face of a fixed frame of the window 40 or a door. A portable control point may be a remote control, a smartphone, or a tablet.

[0172] Advantageously, the local control unit 12 and / or the central control unit 13 further includes a controller 35.

[0173] The motorized drive device 5, in particular the control unit 15, is preferably configured to execute movement commands, in particular closing, as well as opening, of the screen 2 of the shading device 3. These commands can be issued, in particular, by the local control unit 12 or by the central control unit 13.

[0174] The motorized drive device 5 can be controlled by the user, for example by receiving a command order corresponding to a press on the or one of the selection elements 14 of the local control unit 12 or of the central control unit 13.

[0175] Advantageously, the blackout installation 6 further includes at least one sensor 32.

[0176] Advantageously, the sensor 32 includes at least one second communication module 36, such as that described with reference to the local control unit 12 or the central control unit 13. In addition, the second communication module 36 of the sensor 32 is configured to communicate, that is to say, communicates, with the first communication module 27 of the control unit 15.

[0177] Advantageously, the sensor 32 can be, for example, an illuminance sensor, a temperature sensor, a humidity sensor or a wind sensor.

[0178] Thus, the motorized drive device 5 can also be controlled automatically by receiving a control order corresponding to at least one signal from the sensor 32.

[0179] In addition or alternatively, the motorized drive device 5 can also be automatically controlled by receiving a command order corresponding to at least one signal from a clock, not shown, of the control unit 15, in particular the microcontroller 30.

[0180] In addition or alternatively, the sensor 32 and / or the clock can be integrated into the local control unit 12 or the central control unit 13.

[0181] Advantageously, the electromechanical actuator 11 further comprises a crown, not shown, which can also be called a sleeve.

[0182] The crown is disposed, in other words is configured to be disposed, in the vicinity of the first end 17a of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0183] The crown constitutes, in other words is configured to constitute, a bearing for the rotational guidance of the winding tube 4, around the housing 17 of the electromechanical actuator 11, in particular in an assembled configuration of the motorized drive device 5 and, consequently, of the occulting device 3.

[0184] Advantageously, the electromechanical actuator 11 and, more particularly, the control unit 15 further includes a device for detecting end-of-travel and / or obstacle conditions during the movement of the screen 2. This device can be mechanical or electronic.

[0185] Advantageously, the limit switch and / or obstacle detection device is implemented by means of the microcontroller 30 of the control unit 15 and, in particular, by means of an algorithm implemented by this microcontroller 30.

[0186] The winding tube 4 is driven in rotation around the axis of rotation X and the housing 17 of the electromechanical actuator 11 by means of two pivot joints. The first pivot joint is made at one end of the winding tube 4 by means of the ring. The ring thus provides a bearing. The second pivot joint, not shown, is made at a second end of the winding tube 4, opposite the first end.

[0187] Advantageously, the electromechanical actuator 11 further comprises a torque support 21.

[0188] Here, the torque support 21 is disposed at the first end 17a of the housing 17 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.

[0189] The torque support 21 allows the forces exerted by the electromechanical actuator 11 to be absorbed, in particular the torque exerted by the electromechanical actuator 11, with respect to the structure of building B. The torque support 21 advantageously also allows the forces exerted by the winding tube to be absorbed. 4, including the weight of the winding tube 4, the electromechanical actuator 11 and the screen 2, and to ensure that these forces are taken over by the structure of building B.

[0190] Thus, the torque support 21 allows the electromechanical actuator 11 to be fixed on the retaining device 9, 23, in particular to one of the supports 23 or to one of the cheeks 10 of the casing 9.

[0191] Advantageously, the torque support 21 is projecting at the first end 17a of the housing 17 of the electromechanical actuator 11.

[0192] Advantageously, the torque support 21 closes, in other words is configured to close, the first end 17a of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0193] Furthermore, the torque support 21 of the electromechanical actuator 11 can support at least part of the control unit 15.

[0194] Advantageously, the torque support 21 is fixed to the housing 17 by means of one or more fixing elements, in particular in the assembled configuration of the electromechanical actuator 11.

[0195] The fastening element(s) may be, in particular, bosses, fixing screws, rivets, elastic snap-fit ​​fastening elements, notches fitted into notches or a combination of these different fastening elements.

[0196] Here, the torque support 21 includes a notch 41, which may be called the second notch 41, particularly in the form of a radial projection, as illustrated in [Fig. 4]. The housing 17 includes a notch, not shown, which may be called the second notch. The notch is formed at the first end 17a of the housing 17. Furthermore, the notch 41 of the torque support 21 is configured to be fitted, that is to say, is pressed into, the notch in the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0197] Thus, such an assembly of the torque support 21 and the housing 17 makes it possible to lock the torque support 21 in rotation relative to the housing 17, around the axis of rotation X.

[0198] In an alternative, not shown, the torque support 21 comprises two notches 41, which are diametrically opposed with respect to the axis of rotation X. In addition, the housing 17 then comprises two notches, which are also diametrically opposed with respect to the axis of rotation X.

[0199] Advantageously, the torque support 21 and the housing 17 are fixed, in other words are configured to be fixed, to each other, by means of fastening elements, in particular in the assembled configuration of the electromechanical actuator 11.

[0200] Thus, the fixing of the torque support 21 to the housing 17 makes it possible to block in translation the torque support 21 with respect to the housing 17, in the vicinity of the first end 17a of the housing 17, along the direction of the axis of rotation X.

[0201] Advantageously, the fixing elements of the torque support 21 with the housing 17 are screw fixing elements.

[0202] Here, the attachment of the torque support 21 to the housing 17 is achieved by means of fixing screws, not shown, in particular two in number, which may be, for example, of the self-tapping type. In the assembled configuration of the electromechanical actuator 11, each fixing screw passes through a through hole 42 provided in the housing 17 and is screwed into a fixing hole 45 of the torque support 21. Alternatively, each fixing screw may pass through a through hole, not shown, provided in the ring.

[0203] The number of fixing screws is not limited and may vary. It may be, for example, one or three or more.

[0204] Advantageously, the torque support 21 comprises a first part 21a, which can also be called a "fixed point", and a second part 21b, which can also be called an "actuator head".

[0205] Advantageously, the first part 21a of the torque support 21 is assembled, in other words is configured to be assembled, with the housing 17, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the second part 21b of the torque support 21 is configured to be assembled, in other words is assembled, with the retaining device 9, 23, in particular in an assembled configuration of the electromechanical actuator 11 in the concealing device 3.

[0206] In one embodiment, the second part 21b of the torque support 21 is assembled, in other words, configured to be assembled, on the first part 21a of the torque support 21, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the second part 21b of the torque support 21 is assembled on the first part 21a of the torque support 21 by means of assembly elements.

[0207] Thus, the torque support 21 consists of at least two separate parts, each forming respectively the first and second parts 21a, 21b of the torque support 21.

[0208] In this way, the second part 21b of the torque support 21 can be interchangeable with respect to the first part 21a of the torque support 21, in particular depending on the shape and type of the retaining elements, not shown, of the retaining device 9, 23.

[0209] In another embodiment, the torque support 21 can be made of a single piece forming the first and second parts 21a, 21b of the torque support 21. Thus, the torque support 21 is made by means of a single piece.

[0210] Advantageously, the second part 21b of the couple support 21 can have different external shapes, including a fluted shape, known as "star-shaped", in other words including reliefs on its contour, or a round shape, in other words without reliefs on its contour.

[0211] Advantageously, at least a portion of the first part 21a of the torque support 21 is generally cylindrical in shape and is disposed, in other words is configured to be disposed, inside the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0212] Advantageously, an outside diameter of at least a portion of the second part 21b of the torque support 21 is greater than an outside diameter 017 of the housing 17.

[0213] Advantageously, the torque support 21 further includes a stop 33. In addition, the stop 33 is supported, in other words is configured to be supported, against the housing 17, at the level of the first end 17a of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0214] Thus, the stop 33 of the torque support 21 allows the sinking of the first part 21a of the torque support 21 into the housing 17 to be limited, along the direction of the axis of rotation X.

[0215] Here, the stop 33 of the torque support 21 includes a shoulder. More particularly, it is made in the form of a collar, in particular cylindrical in shape and with a straight generatrix.

[0216] Advantageously, the ring is disposed, in other words is configured to be disposed, around the torque support 21, in particular the second part 21b of the torque support 21, especially in the assembled configuration of the electromechanical actuator 11. In this case, the ring is mounted freely to rotate around the torque support 21, in particular the second part 21b of the torque support 21.

[0217] In an alternative, not shown, the ring is disposed, in other words is configured to be disposed, around a part of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the ring is mounted freely to rotate around the housing 17.

[0218] In another variant, not shown, the ring is arranged, or rather configured, to be arranged, on the one hand, around the torque support 21 and, on the other hand, around a portion of the housing 17 of the electromechanical actuator 11, in particular the first end 17a of the housing 17, especially in the assembled configuration of the electromechanical actuator 11. In such a case, the ring is free rotational mounting, on the one hand, around the torque support 21 and, on the other hand, around the housing 17 of the electromechanical actuator 11.

[0219] Advantageously, the torque support 21 further comprises a cover 22.

[0220] The cover 22 is mounted, in other words is configured to be mounted, on the torque support 21, in particular on the first and / or second parts 21a, 21b of the torque support 21, in particular in the assembled configuration of the electromechanical actuator 11.

[0221] Advantageously, the control unit 15 is disposed at least partly inside the housing 17 of the electromechanical actuator 11.

[0222] Furthermore, the control unit 15 can be disposed at least partly outside the housing 17 of the electromechanical actuator 11 and, in particular, mounted in the torque support 21 or in one of the supports 23.

[0223] Advantageously, the control unit 15 comprises a first electronic card, not shown, and, optionally, at least a second electronic card, not shown.

[0224] In one embodiment, the first electronic board is arranged inside the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11. Furthermore, the second electronic board is arranged inside the torque support 21 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0225] Advantageously, the torque support 21 comprises, in other words integrates, at least one selection device 44, in particular a button, which may be, for example, of the push-button or magnetic type, only one of which is shown in [Fig. 4]. Furthermore, the selection device or devices 44 are configured, in particular, to adjust the electromechanical actuator 11 through one or more configuration modes, to pair one or more control units 12, 13 with the electromechanical actuator 11, to reset one or more parameters, which may be, for example, a limit switch position, to reset the paired control unit(s) 12, 13, or to control the movement of the screen 2.

[0226] Advantageously, the torque support 21 comprises, in other words integrates, at least one display device, not shown. Furthermore, the display device or devices are configured, in particular, to display a visual indication, which may, for example, be representative of an operating mode of the electromechanical actuator 11, in particular a configuration mode or a control mode, or of a state of a component of the motorized drive device 5.

[0227] Advantageously, the first electronic board is configured to control the electric motor 16. Furthermore, the second electronic board is configured in particular to access parameterization and / or configuration functions of the electromechanical actuator 11, by means of the selection device 44 and, possibly, display.

[0228] Alternatively, not shown, the control unit 15 comprises a single electronic board. In addition, the electronic board is configured to control the electric motor 16 and, optionally, to access parameterization and / or configuration functions of the electromechanical actuator 11, by means of the selection device(s) 44 and, optionally, display.

[0229] Advantageously, the motorized drive device 5 and, more particularly, the electromechanical actuator 11 further includes an electrical power cable 18, as illustrated in Figures 2 to 4.

[0230] Advantageously, the control unit 15 can be supplied with electrical energy by means of the power supply cable 18 electrically connected to at least one source of electrical power supply, not shown, which may be, for example, an electrical power supply network, in particular from the mains or known as "PoE" (acronym for the Anglo-Saxon term Power over Ethernet), and / or to a battery, which may be rechargeable, in particular by means of a photovoltaic panel and / or a charger, not shown, or through the electrical power supply network.

[0231] Thus, the power supply cable 18 allows the electromechanical actuator 11, in particular the control unit 15 and the electric motor 16, to be supplied with electrical energy from the source(s) of electrical power supply.

[0232] Here, the control unit 15, in particular each of the first and second electronic boards, is supplied with electrical energy by means of the power supply cable 18.

[0233] The assembly of the part of the electromechanical actuator 11 on the output shaft 20 side is now described in more detail and with reference to figures 4 to 8.

[0234] The electromechanical actuator 11 further includes an end cover 49.

[0235] The reducer 19, in particular the housing 47, is assembled, in other words is configured to be assembled, with the end cover 49, in particular in the assembled configuration of the electromechanical actuator 11.

[0236] Advantageously, the end cover 49 is fixed, in other words is configured to be fixed, to the reducer 19, in particular to the housing 47, by means of fixing elements 52a, 52b, which may be called second fixing elements 52a, 52b, in particular in the assembled configuration of the electromechanical actuator 11.

[0237] Here, each fastener 52a belongs to the housing 47 and each fastener 52b belongs to the end cover 49.

[0238] Advantageously, the fastening elements 52a, 52b are elastic snap-fit ​​fastening elements, of which there are two and which are arranged diametrically opposite with respect to the axis of rotation X, in other words at 180° to each other, around the axis of rotation X. Only one of the fastening elements 52a and one of the fastening elements 52b are visible in [Fig.5].

[0239] The number and type of fastening elements are not limiting and may vary. They may, for example, be three in number and arranged at an angle of 120° to each other, around the axis of rotation.

[0240] Advantageously, the reducer 19, in particular the housing 47, comprises notches 50a and tabs 50b, i.e., slots, which may be called first notches 50a and first tabs 50b, arranged alternately about the axis of rotation X. The end cover 49 comprises tabs 51a and notches 51b, i.e., slots, which may be called second tabs 51a and second notches 51b, arranged alternately about the axis of rotation X. Furthermore, the notches 50a and tabs 50b of the reducer 19 are nested, i.e., are configured to be nested, in the tabs 51a and notches 51b of the end cover 49, in particular in the assembled configuration of the electromechanical actuator 11, as illustrated in the [Fig.5].

[0241] Thus, the tabs 50b of the reducer 19 are configured to engage in the notches 51b of the end cover 49. In addition, the tabs 51a of the end cover 49 are configured to engage in the notches 50a of the reducer 19.

[0242] Advantageously, each of the tabs 50b of the reducer 19 includes an end wall 50b 1. Each of the notches 51b of the end cover 49 includes a bottom wall 51b 1. In addition, the bottom wall 51b 1 of one of the notches 51b of the end cover 49 is supported, that is to say, is configured to be supported, against the end wall 50bl of one of the tabs 50b of the reducer 19, in particular in the assembled configuration of the electromechanical actuator 11.

[0243] Thus, the support of the bottom wall 51b 1 of the notches 51b with the end wall 50b 1 of the tabs 50b forms a positioning stop of the reducer 19, in particular of the housing 47, with respect to the end cover 49, according to the direction of the axis of rotation X.

[0244] In this way, the stop formed by the bearing of the bottom wall 51b 1 of the notches 51b with the end wall 50bl of the tabs 50b allows, on the one hand, to position the reducer 19 inside the housing 17, along the direction of the axis of rotation X, and, on the other hand, to block a translational movement of the reducer 19 inside the housing 17, along the direction of the axis of rotation X and following the assembly of the electromechanical actuator 11.

[0245] Here, the reducer 19, in particular the housing 47, comprises eight notches 50a which are angularly offset by an angle of 45° about the axis of rotation X. The reducer 19, in particular the housing 47, comprises six tabs 50b and two fastening elements 52a which are angularly offset by an angle of 45° about the axis of rotation X. Each fastening element 52a is arranged between two sets of three adjacent tabs 50b. The end cover 49 comprises six notches 51b and two fastening elements 52b angularly offset by an angle of 45° about the axis of rotation X. Each fastening element 52b is arranged between two sets of three adjacent notches 51b. In addition, the end cover 49 includes eight tabs 51a angularly offset by an angle of 45° around the axis of rotation X.

[0246] The number and angular position of the notches, tabs and fastening elements of the reducer and end cover are not limiting and may vary. For example, where the reducer, in particular the housing and end cover, are without fastening elements, there may be three notches and tabs angularly offset by an angle of 120° around the axis of rotation, or four notches and tabs angularly offset by an angle of 90° around the axis of rotation.

[0247] Here, the notches 50a and the tabs 50b are provided in the reducer 19, in particular in the housing 47, so as to reduce the number of parts constituting the reducer 19.

[0248] Alternatively, not shown, the notches 50a and the tabs 50b are provided in an additional part, in particular an end piece. In this case, the additional part is fixed, that is to say, is configured to be fixed, to the housing 47 of the reducer 19, in particular in the assembled configuration of the reducer 19.

[0249] The end cover 49 is disposed at the second end 17b of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11. In [Fig.5], only a part of the housing 17 is shown, near its second end 17b.

[0250] Advantageously, the end cover 49 closes, in other words is configured to close, the second end 17b of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0251] Advantageously, the end cover 49 includes a central opening 54 for the output shaft 20 to pass through. In addition, the output shaft 20 is configured to extend, that is to say, extends, on either side of the end cover 49 by passing through the central opening 54, particularly in the assembled configuration of the electromechanical actuator 11.

[0252] Here, the central opening 54 of the end cover 49 is centered on the axis of rotation X.

[0253] Here, the rotation axis X of the electromechanical actuator 11 passes through a center of the organs 16, 19, 20, 21, 25, 49 mounted at least partly inside the housing 17, such as the electric motor 16, the reducer 19, the output shaft 20, the end cover 49 and, optionally, the brake 25 and the torque support 21.

[0254] The end cover 49 includes at least one notch 55, which may be called the first notch 55, in particular in the form of a radial projection, as illustrated in Figures 4 to 6 and 8. The housing 17 includes at least one notch 56, which may be called the first notch 56. The notch or notches 56 are provided at the second end 17b of the housing 17. In addition, the notch or notches 55 are configured to be fitted, that is to say, are fitted, into the notch or notches 56 of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0255] Thus, such an assembly of the end cover 49 and the housing 17 makes it possible to lock the end cover 49 in rotation relative to the housing 17, around the axis of rotation X.

[0256] In this way, such an assembly of the end cover 49 and the housing 17 makes it possible to lock the reducer 19 in rotation relative to the housing 17, around the axis of rotation X.

[0257] In addition, the cooperation of the notch or each notch 55 of the end cover 49 with the notch or one of the notches 56 of the housing 17 makes it possible to achieve a resumption of torque transmitted by the reducer 19 to the housing 17.

[0258] Advantageously, the or each notch 56 opens onto an edge of the housing 17, on the side of the second end 17b of the housing 17.

[0259] Here, the end cover 49 comprises two notches 55, which are diametrically opposed with respect to the axis of rotation X, only one of which is visible in [Fig. 3], but both of which are visible in Figures 6 and 8. The housing 17 comprises two notches 56, at its second end 17b, which are also diametrically opposed with respect to the axis of rotation X. In addition, each of the notches 56 receives, or is configured to receive, one of the notches 55, particularly in the assembled configuration of the electromechanical actuator 11.

[0260] In an alternative, not shown, the end cover 49 includes a single notch 55 and the housing 17 includes a single notch 56, at its second end 17b.

[0261] In another embodiment, not shown, the end cover 49 comprises three notches 55, which are angularly offset by an angle of 120° about the axis of rotation X, or four notches 55, which are angularly offset by an angle of 90° about the axis of rotation X. In this case, the housing 17 comprises, respectively, three notches 56, which are angularly offset by an angle of 120° about the axis of rotation X, or four notches 56, which are angularly offset by an angle of 90° around the axis of rotation X.

[0262] The notch or each notch 55 of the end cover 49 comprises at least a first lateral edge 55a and a second lateral edge 55b. The second lateral edge 55b is opposite the first lateral edge 55a.

[0263] Advantageously, the end cover 49 further comprises a body 49a. The body 49a comprises an external surface 49al. The notch or notches 55 extend from the external surface 49al of the body 49a, in a radial direction to the axis of rotation X and outwards from the end cover 49.

[0264] Advantageously, the external surface 49al of the body 49a of the end cover 49 is mounted against the internal surface 17c of the housing 17 with a tight fit.

[0265] Advantageously, each notch 56 of the housing 17 comprises at least a first lateral edge 56a and a second lateral edge 56b. The second lateral edge 56b is opposite the first lateral edge 56a.

[0266] The notch or each notch 55 of the end cover 49 comprises, in other words defines, a median plane P passing through the axis of rotation X, as illustrated in [Fig.8].

[0267] The median plane P is equidistant from the first and second lateral edges 55a, 55b of the or each notch 55.

[0268] Each of the first and second lateral edges 55a, 55b of the notch or of each notch 55 is inclined, with respect to the median plane P, by an angle a whose value is between 5° and 45°, advantageously between 10° and 30° and preferably of the order of 15°.

[0269] Thus, the inclination of each of the first and second lateral edges 55a, 55b of the or each notch 55 of the end cover 49, with respect to the median plane P, makes it possible to improve the mechanical hold of the end cover 49 on the housing 17 and to do away with one or more fixing elements of the reducer 19 with respect to the housing 17, in particular of the pin type, screw type or retaining notch type, so as to guarantee a transmission of torque from the reducer 19 to the output shaft 20, during the electrical activation of the electric motor 16.

[0270] The inclination of each of the first and second lateral edges 55a, 55b of the or each notch 55 of the end cover 49, with respect to the median plane P, allows each of the first and second lateral edges 56a, 56b of the or one of the notches 56 of the housing 17 to be wedged at the level of each junction area 58.

[0271] In this way, the inclination of each of the first and second lateral edges 55a, 55b of the or of each notch 55 of the end cover 49, with respect to the median plane P, makes it possible to prevent the reducer 19 from being driven into rotation inside the housing 17, around the axis of rotation X, during the electrical activation of the electric motor 16.

[0272] Therefore, even in the case where the thickness E of the housing 17 is small, the notch or each notch 55 of the end cover 49 remains inside the notch or one of the notches 56 of the housing 17, in which this notch 55 is fitted, without passing under the inner surface 17c of the housing 17, during the electrical activation of the electric motor 16.

[0273] In addition, the absence of one or more fixing elements, in particular of the pin type, screw type or retaining notch type, between the reducer 19 and the housing 17 makes it possible to avoid either one or more holes in the housing 17, or one or more deformations of the housing 17.

[0274] In this way, the cost of obtaining the electromechanical actuator 11 is lower and the production defect rate of the electromechanical actuator 11 is minimized, since the manufacture of the housing 17 does not require drilling or deformation operations to fix the reducer 19 to the housing 17.

[0275] Furthermore, the housing 17 and the reducer 19 can be reused for another assembly of the electromechanical actuator 11, in particular following a repair thereof.

[0276] Advantageously, the end cover 49 further comprises a junction area 58 located between the external surface 49al of the body 49a and each of the first and second lateral edges 55a, 55b of the or each notch 55.

[0277] Here, the junction zone 58 corresponds to a re-entrant dihedral, in other words to a shoulder.

[0278] Advantageously, the thickness E of the housing 17 is less than or equal to one and a half millimeters, preferably to one millimeter and more particularly on the order of eight tenths of a millimeter.

[0279] Advantageously, the thickness E of the housing 17 is less than or equal to one and a half millimeters when the outside diameter 017 of the housing 17 is less than or equal to fifty millimeters.

[0280] Advantageously, the thickness E of the housing 17 is less than or equal to one millimeter when the outside diameter 017 of the housing 17 is less than or equal to forty millimeters.

[0281] Advantageously, the body 49a of the end cover 49 includes a flat 60 provided at each junction area 58.

[0282] In other words, each flat 60 is provided at the level of a foot of one of the first and second lateral edges 55a, 55b of the or of each notch 55.

[0283] Here, each flat 60 corresponds to a reduction in thickness of the body 49a of the end cover 49.

[0284] Thus, each of the first and second lateral edges 56a, 56b of the or one of the notches 56 of the housing 17 deforms, in other words is configured to deform, at the level of an area formed by the flat 60 provided at the level of each junction area 58 of the end cover 49, so as to wedge the housing 17 by the or each notch 55 of the end cover 49, during the electrical activation of the electric motor 16, without the or each notch 55 of the end cover 49 passing under the inner surface 17c of the housing 17.

[0285] In other words, each of the first and second lateral edges 56a, 56b of the or one of the notches 56 of the housing 17 is oriented towards the interior of the end cover 49 by the flat 60 provided at the level of each junction zone 58 of the end cover 49, during the electrical activation of the electric motor 16.

[0286] Advantageously, the notch or each notch 55 of the end cover 49 comprises an outer surface 55e.

[0287] Here and as illustrated in Figures 3 and 6, the outer surface 55e of the or each notch 55 is visible through the or one of the notches 56 of the housing 17, in the assembled configuration of the electromechanical actuator 11, from outside the housing 17.

[0288] Furthermore, a radius R55 between the axis of rotation X and the outer surface 55e of the notch or notches 55 is greater than or equal to a radius R17 between the axis of rotation X and the outer surface 17d of the housing 17, as illustrated in [Fig. 6]. The outer surface 17d of the housing 17 is the unpainted or raw outer surface of the housing 17. In other words, the outer surface 17d of the housing 17 corresponds to the outer surface of the housing 17 before the paint layer is applied.

[0289] Thus, each of the first and second lateral edges 56a, 56b of the or each notch 56 of the housing 17 is in direct contact with one of the first and second lateral edges 55a, 55b of the or each notch 55, while ensuring an overhang or alignment of the outer surface 55e of the or each notch 55 with respect to the outer surface 17d of the housing 17, in a radial direction to the axis of rotation X, in particular during electrical activation of the electric motor 16.

[0290] In this way, the overhang or alignment of the outer surface 55e of the or each notch 55 with respect to the outer surface 17d of the housing 17, in the radial direction to the axis of rotation X, makes it possible to prevent the or each notch 55 of the end cover 49 from coming out of the or one of the notches 56 of the housing 17, in which this notch 55 is fitted, by passing under the inner surface 17c of the housing 17.

[0291] Advantageously, in the case where the value of the radius R55 is strictly greater than the value of the radius R17 and if the difference between these values ​​of the radii R55, R17 is equal to the thickness of the paint layer, the outer surface 55e of the or each notch 55 is flush with the outer surface of the painted housing 17, the outer surface of the casing 17 being defined as an external surface after the application of the paint layer on the external surface 17d of the casing 17.

[0292] Thus, the aesthetic appearance of the electromechanical actuator 11 is improved since the notch or each notch 55 does not protrude from the outer surface of the painted housing 17.

[0293] Advantageously, the end cover 49 and the housing 17 are fixed, in other words are configured to be fixed, to each other, by means of fixing elements 57a, 57b, which may be called first fixing elements 57a, 57b, in particular in the assembled configuration of the electromechanical actuator 11.

[0294] Thus, the fixing of the end cover 49 to the housing 17 makes it possible to block, in translation, the end cover 49, as well as the reducer 19, with respect to the housing 17, in the vicinity of the second end 17b of the housing 17, along the direction of the axis of rotation X.

[0295] Furthermore, following the fixing of the end cover 49 relative to the housing 17, the end cover 49 serves as a stop for the reducer 19, during the assembly of the electromechanical actuator 11 and during the handling of the electromechanical actuator 11 in a mounted state, along the direction of the axis of rotation X.

[0296] Advantageously, the fastening elements 57a, 57b of the end cover 49 with the housing 17 are elastic snap-fit ​​fastening elements.

[0297] Thus, the fixing of the end cover 49 with the housing 17 is implemented in a simple and inexpensive manner.

[0298] Here, the attachment of the end cover 49 to the housing 17 is implemented by means of clips 57a, in particular two of them, provided on the end cover 49, and openings 57b, in particular two of them, provided in the housing 17, at its second end 17b. In the assembled configuration of the electromechanical actuator 11, each clip 57a is housed in one of the openings 57b.

[0299] The number of elastic snap-fit ​​fastening elements is not limiting and may vary. It may be, for example, one or more or equal to three.

[0300] Here, unlike the notches 56, the openings 57b do not open onto the edge of the housing 17, on the side of the second end 17b of the housing 17.

[0301] Advantageously, the fixing elements 57a, 57b constitute a positioning stop for the end cover 49 relative to the housing 17, at the level of the second end 17b of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11, as illustrated in [Fig.7].

[0302] Here, the stop formed by the fixing elements 57a, 57b is obtained by pressing a surface, in particular an end surface, 57a 1 of the or of each clip 57a with an edge 57b 1 of the or one of the openings 57b.

[0303] Thus, this positioning stop made using the fixing elements 57a, 57b makes it possible to limit the sinking of the end cover 49 inside the housing 17, along the direction of the axis of rotation X.

[0304] Advantageously, the end cover 49 further comprises a collar 53, as illustrated in Figures 5 and 7. In addition, the collar 53 is supported, that is to say, is configured to be supported, against the inner surface 17c of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0305] Thus, the collar 53 of the end cover 49 contributes to the sealing between the end cover 49 and the housing 17 by exerting pressure against the inner surface 17c of the housing 17.

[0306] In this way, the sealing of the electromechanical actuator 11, at the level of the second end 17b of the housing 17, is implemented, on the one hand, by fitting the end cover 49 into the inside of the housing 17, so as to close the second end 17b of the housing 17, and, on the other hand, by pressing the collar 53 of the end cover 49 against the inner surface 17c of the housing 17.

[0307] Thanks to the present invention, the inclination of each of the first and second lateral edges of the or each notch of the end cover, with respect to the median plane, makes it possible to improve the mechanical holding of the end cover on the housing and to do away with one or more fixing elements of the reducer with respect to the housing, so as to guarantee a transmission of torque from the reducer to the output shaft, during the electrical activation of the electric motor.

[0308] Many modifications can be made to the embodiment examples described above without departing from the scope of the invention.

[0309] Alternatively, not shown, brake 25 is a cam brake, a magnetic brake or an electromagnetic brake.

[0310] In an alternative, not shown, the brake 25 is configured to be disposed, in other words is disposed, in particular in the assembled configuration of the electromechanical actuator 11, between the electric motor 16 and the reducer 19, in other words at the output of the electric motor 16, between the control unit 15 and the electric motor 16, in other words at the input of the electric motor 16, or between the reducer 19 and the output shaft 20, in other words at the output of the reducer 19.

[0311] Furthermore, the envisaged embodiments and variants can be combined to generate new embodiments of the invention, without departing from the scope of the invention.

Claims

Demands

1. An electromechanical actuator (11) for a shutter device (3), the electromechanical actuator (11) comprising at least: - an electric motor (16), - a gearbox (19), - a housing (17), the electric motor (16) and the gearbox (19) being mounted inside the housing (17), - an output shaft (20), the gearbox (19) being assembled with the output shaft (20), and - an end cover (49), the housing (17) comprising: - a first end (17a) and a second end (17b), the second end (17b) being opposite the first end (17a), the end cover (49) being disposed at the second end (17b) of the housing (17), - an inner surface (17c) and an outer surface (17d), the inner surface (17c) being opposite the outer surface (17d), and - at least one notch (56), the notch or each notch (56) being provided at the second end (17b) of the housing (17),the notch or each notch (56) comprising at least a first lateral edge (56a) and a second lateral edge (56b), the second lateral edge (56b) being opposite the first lateral edge (56a), the end cover (49) comprising at least: - a body (49a), the body (49a) comprising an external surface (49a1), - a notch (55), the notch or each notch (55) being fitted into the notch or one of the notches (56), the notch or each notch (55) comprising at least a first lateral edge (55a) and a second lateral edge (55b), the second lateral edge (55b) being opposite the first lateral edge (55a), and - a junction zone (58) situated between the external surface (49a1) of the body (49a) and each of the first and second lateral edges (55a, 55b) of the notch or each notch (55), the actuator electromechanical (11) comprising a rotation axis (X) passing through a center of the components (16, 19, 20, 49) mounted at least partly inside the housing (17),the notch or each notch (55) comprising a median plane (P) passing through the axis of rotation (X), characterized in that each of the first and second lateral edges (55a, 55b) of the or of each notch (55) is inclined, with respect to the median plane (P), at an angle (a) whose value is between 5° and 45°, so as to wedge each of the first and second lateral edges (56a, 56b) of the or one of the notches (56) at the level of each junction zone (58).

2. Electromechanical actuator (11) of a blackout device (3) according to claim 1, characterized in that the external surface (49al) of the body (49a) is mounted against the internal surface (17c) of the housing (17) with a tight fit.

3. Electromechanical actuator (11) of a blackout device (3) according to claim 2, characterized in that the notch or each notch (55) extends from the external surface (49a 1) of the body (49a), in a radial direction to the axis of rotation (X) and outwards from the end cover (49), and in that the body (49) includes a flat (60) provided at each junction area (58).

4. Electromechanical actuator (11) of a blackout device (3) according to any one of claims 1 to 3, characterized in that the housing (17) is a tube having a circular cross-section, in that the housing (17) is covered with a layer of paint deposited at least on the outer surface (17d) of the housing (17), in that the or each notch (55) of the end cover (49) comprises an outer surface (55e), and in that a value of a radius (R55) between the axis of rotation (X) and the outer surface (55e) of the or each notch (55) is greater than or equal to a value of a radius (R17) between the axis of rotation (X) and the outer surface (17d) of the housing (17), the outer surface (17d) of the housing (17) being the unpainted outer surface of the housing (17).

5. Electromechanical actuator (11) of a blackout device (3) according to any one of claims 1 to 4, characterized in that the housing (17) has a defined thickness (E) between its inner (17c) and outer (17d) surfaces, and in that the thickness (E) of the housing (17) is less than or equal to one and a half millimeters.

6. Electromechanical actuator (11) of a blackout device (3) according to any one of claims 1 to 5, characterized in that the end cover (49) and the housing (17) are fixed to each other by means of first fixing elements (57a, 57b), and in that the first fixing elements (57a, 57b) of the end cover (49) with the housing (17) are elastic snap-fit ​​fixing elements.

7. Electromechanical actuator (11) of a blackout device (3) according to claim 6, characterized in that the first fixing elements (57a, 57b) constitute a positioning stop for the end cover (49) relative to the housing (17), at the level of the second end (17b) of the housing (17).

8. Electromechanical actuator (11) of a blackout device (3) according to any one of claims 1 to 7, characterized in that the end cover (49) is fixed to the reducer (19) by means of second fixing elements (52a, 52b).

9. Electromechanical actuator (11) of a blackout device (3) according to any one of claims 1 to 8, characterized in that the reducer (19) comprises first notches (50a) and first tabs (50b) arranged alternately around the axis of rotation (X), in that the end cover (49) comprises second tabs (51a) and second notches (51b) arranged alternately around the axis of rotation (X), and in that the first notches (50a) and the first tabs (50b) of the reducer (19) are nested in the second tabs (51a) and the second notches (51b) of the end cover (49).

10. A blackout device (3), the blackout device (3) comprising at least: - a screen (2), and - an electromechanical actuator (11), the screen (2) being driven in movement by the electromechanical actuator (11), characterized in that the electromechanical actuator (11) conforms to any one of claims 1 to 9.

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