Electromechanical actuator and occultation device comprising such an electromechanical actuator

Abstract

Electromechanical actuator and occulting device comprising such an electromechanical actuator An electromechanical actuator comprises an electric motor, a reduction gear, a housing, an output shaft and an end cover. The housing comprises at least one notch, the or each notch being provided at one end of the housing. The end cover (49) comprises at least one notch (55). The or each notch (55) is fitted into the or one of the notches. The or each notch (55) comprises at least a first lateral edge (55a) and a second lateral edge (55b). The or each notch (55) comprises 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 or each notch (55) is inclined, relative to the median plane (P), by an angle (α) whose value is between 5° and 45°. Figure for the abstract: Figure 8.

Description

Title of the invention: Electromechanical actuator and occultation 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 concealment device comprising a screen driven in movement by such an electromechanical actuator.

[0003] Generally, the present invention relates to the field of occultation 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 comprises an electromechanical actuator of a movable closing, concealing or sun protection element such as a shutter, a door, a grille, a blind or any other equivalent material, hereinafter called a screen.

[0005] Document WO 2019 / 072841 A1 is already known, which describes an electromechanical actuator for a blackout device. The electromechanical actuator comprises an electric motor, a reducer, a housing, an output shaft, and an end cover. The electric motor and the reducer 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 disposed 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 provided 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 an axis of rotation passing through a center of the members mounted at least partly inside the housing. Each notch comprises a median plane passing through the axis of rotation. In addition, 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 casing by one or more fixing elements of the pin type, screw type or holding notch type, to allow transmission of torque 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 fixing elements of the pin type, of the screw type or of the holding notch type, between the reducer and the casing, causes the reducer to be driven in rotation inside the casing, around an axis of rotation of the electromechanical actuator, during the electrical activation of the electric motor.

[0008] Furthermore, when the casing has a small thickness, it deforms when the electric motor is electrically activated.

[0009] Consequently, each notch of the end cover emerges from the notch of the casing, in which this notch is previously fitted, passing under the inner surface of the casing.

[0010] To allow the fixing of the pin-type, screw-type or retaining notch-type fixing element(s) between the reducer and the casing, the casing comprises 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 these, as well as due to the control operations necessary to validate the conformity of the casing and the fixing of the reducer in the casing.

[0012] Furthermore, the rate of production defects of the electromechanical actuator is amplified, in particular due to aesthetic defects of the casing, since the latter is covered with a layer of paint which may be chipped, positioning defects of either the hole(s) in the casing, or the deformation(s) of the casing, or the presence of chips coming from the casing when drilling it.

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

[0014] Consequently, the casing 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 solve the aforementioned drawbacks and to propose an electromechanical actuator for a concealment device, as well as a concealment device comprising such an electromechanical actuator, making it possible to improve the mechanical strength of an end cover on a casing and to dispense with one or more fixing elements of a reducer relative to the casing, while guaranteeing satisfactory torque transmission from the reducer to an output shaft, during electrical activation of an electric motor.

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

[0017] the electromechanical actuator comprising at least:

[0018] - an electric motor,

[0019] - a reducer,

[0020] - a casing, the electric motor and the reducer being mounted inside the casing,

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

[0022] - an end cover,

[0023] the casing comprising:

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

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

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

[0027] the end cover comprising at least:

[0028] - a notch, the or each notch being fitted into the 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 members mounted at least partly inside the casing, the 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 or each notch is inclined, relative to the median plane, by an angle whose value is between 5° and 45°.

[0031] Thus, 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, makes it possible to improve the mechanical hold of the end cover on the casing and to dispense with one or more elements for fixing the reducer relative to the casing, in particular of the pin type, screw type or holding notch type, so as to guarantee transmission of torque from the reducer to the output shaft, during 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, makes it possible to prevent the reducer from being driven in rotation inside the casing, around the axis of rotation, during electrical activation of the electric motor.

[0033] Consequently, even in the case where a thickness of the casing is small, the or each notch of the end cover remains inside the or one of the notches of the casing, in which this notch is fitted, without passing under the interior surface of the casing, during the electrical activation of the electric motor.

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

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

[0036] Furthermore, the casing 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 outer surface. Furthermore, the outer surface of the body is mounted against the inner surface of the housing with a tight fit.

[0038] According to another advantageous characteristic of the invention, the or each notch extends from the external surface of the body, in a direction radial to the axis of rotation and towards the outside of the end cover. The end cover further comprises a junction zone located between the external surface of the body and each of the first and second lateral edges of the or each notch. In addition, the body comprises a flat provided at each junction zone.

[0039] According to another advantageous characteristic of the invention, the casing is a tube having a circular section. The casing is covered with a layer of paint deposited at least on the outer surface of the casing. The or each notch of the end cover comprises an outer surface. Furthermore, a value of a radius between the axis of rotation and the outer surface of the or each notch is greater than or equal to a value of a radius between the axis of rotation and the outer surface of the casing, the outer surface of the casing being the unpainted outer surface of the casing.

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

[0041] According to another advantageous characteristic of the invention, the end cover and the casing are fixed to each other by means of first fixing elements. Furthermore, the first fixing elements of the end cover with the casing are elastic snap-fastening fixing elements.

[0042] According to another advantageous characteristic of the invention, the first fixing elements constitute a positioning stop for the end cover relative to the casing, at the second end of the casing.

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

[0044] According to another advantageous characteristic 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. In addition, the first notches and the first tabs of the reducer are nested in the second tabs and the second notches of the end cover.

[0045] The present invention aims, according to a second aspect, at a concealment device,

[0046] the concealment device comprising at least:

[0047] - a screen, and

[0048] - an electromechanical actuator according to the invention and as mentioned above- above, the screen being moved by the electromechanical actuator.

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

[0050] 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:

[0051] [Fig.l] [Fig.l] is a schematic cross-sectional view of a screening installation comprising a screening device according to one embodiment of the invention;

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

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

[0054] [Fig.4] [Fig.4] is a partial sectional schematic view of the electro actuator mechanics illustrated in [Fig.3], according to a sectional 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 casing 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 a part of a housing, a part of a reducer, an output shaft and an end cover;

[0056] [Fig.6] [Fig.6] is a first schematic view in section and in perspective of a part of the electromechanical actuator illustrated in figures 3 to 5, according to a first orientation of a section plane passing through the axis of rotation of the electromechanical actuator, representing the assembly of the end cover relative to the casing, the reducer and the output shaft;

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

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

[0059] First of all, with reference to Figures 1 and 2, a screening installation 6 according to an embodiment of the invention is described. This screening installation 6 comprises at least one screening device 3. This screening installation 6, installed in a building B, comprises at least one opening 1, in which a window 40 or a door, not shown, is arranged. This screening installation 6 is equipped with a screen 2 belonging to the screening device 3, in particular a motorized blind. The screen 2 is configured to move, in other words moves, opposite the window 40 or the door.

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

[0061] The closing, concealment or solar protection installation is subsequently called “concealment installation” 6.

[0062] The closing, concealing or sun protection device is subsequently called “concealing device” 3. The concealing device 3 comprises the screen 2.

[0063] The occultation device 3 may be a blind, in particular a blind comprising a roll-up canvas, a pleated or honeycomb canvas, or slats that can be adjustable, a roller shutter or a roller door. The present invention applies to all types of occultation device 3, which may be arranged either inside the building B, or outside the building B, or with a first part of the occultation devices 3 arranged inside the building B and with a second part of the occultation devices 3 arranged outside the building B.

[0064] Here, the occultation installation 6 comprises the occultation device 3.

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

[0066] Advantageously, the occulting device 3 comprises a motorized drive device 5. The motorized drive device 5 comprises an electromechanical actuator 11 illustrated in FIGS. 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 electro-actuator mechanics 11.

[0068] Here, the motorized drive device 5 and, consequently, the occulting device 3 further comprises a winding tube 4. Furthermore, the winding tube 4 is arranged so as to be driven in rotation by the electromechanical actuator 11.

[0069] Here, the screen 2 can be rolled up onto the winding tube 4.

[0070] Thus, the screen 2 of the occulting device 3 is wound onto the winding tube 4 or unwound around it, the winding tube 4 being driven by the motorized drive device 5, in particular by the electromechanical actuator 11.

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

[0072] The screen 2 of the occultation device 3 is a closing, occultation and / or solar protection screen, winding and unwinding around the winding tube 4, the internal diameter of which is greater than the external diameter of the electromechanical actuator 11, so that the electromechanical actuator 11 can be inserted into the winding tube 4, during the assembly of the occultation device 3.

[0073] Advantageously, the concealment device 3 comprises a holding device 9, 23.

[0074] Advantageously, the holding device 9, 23 may comprise two supports 23. A support 23 is arranged at each end of the winding tube 4, in particular in an assembled configuration of the concealing 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 these are not shown in [Fig. 2]. The supports 23 make it possible to mechanically connect the concealment device 3 to the structure of the building B, in particular to a wall M of the building B.

[0076] Advantageously, the holding device 9, 23 may comprise a box 9. Furthermore, 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 occulting device 3.

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

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

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

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

[0081] Advantageously, the occulting device 3 may also comprise two lateral slides 26, as illustrated only in [Fig. 2]. Each lateral slide 26 comprises a groove 29. Each groove 29 of one of the lateral slides 26 cooperates, in other words is configured to cooperate, with a lateral edge 2a of the screen 2, in particular in the assembled configuration of the occulting 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 makes it possible to rotate the winding tube 4 around an axis of rotation X, so as to move, in particular unwind or wind, the screen 2 of the occulting device 3.

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

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

[0085] The roller blind, which forms the occultation 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 occultation device 3, is fixed to the winding tube 4. Furthermore, a second end of the screen 2, in particular the lower end of the screen 2, in the assembled configuration of the occultation device 3, is fixed to the load bar 8.

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

[0087] In an exemplary embodiment, not shown, the first end of the screen 2 has a hem through which a rod, in particular made of plastic material, is arranged. This hem made at the first end of the screen 2 is obtained by means of a seam of the fabric forming the screen 2. When assembling the screen 2 on 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 provided on the external face of the winding tube 4, in particular over the entire length of the winding tube 4, so as to secure the screen 2 with the winding tube 4 and to be able to wind and unwind the screen 2 around the winding tube 4.

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

[0089] Whatever the embodiment, the first end of the screen 2 is arranged at the level of the holding device 9, 23.

[0090] In the case of a roller blind, the rolled-up high position corresponds to a predetermined high end-of-travel position, or to the loading bar 8 of the screen 2 resting against an edge of the box 9 of the roller blind 3, and the unrolled low position corresponds to a predetermined low end-of-travel position, or to the loading bar 8 of the screen 2 resting 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 may 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 connection, 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 in the building B.

[0094] The motorized drive device 5 is preferably configured to execute the movement commands, in particular unrolling or rolling up, of the screen 2 of the occulting 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 occultation installation 6 and, more particularly, to the occultation device 3 illustrated in FIGS. 1 and 2, will now be described in more detail and with reference to FIGS. 2 to 4.

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

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

[0099] Here, the casing 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 casing 17 is a tube having a circular section.

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

[0102] The material of the casing of the electromechanical actuator is not limiting and may be different. It may be, in particular, a plastic material.

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

[0104] Advantageously, the casing 17 comprises an inner surface 17c and an outer surface 17d. The inner surface 17c is opposite the outer surface 17d.

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

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

[0107] Here, the electric motor 16 and the reducer 19 are housed, in other words are 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 the stator are positioned coaxially around the axis of rotation X.

[0111] Advantageously, the electric motor 16 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”, 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 comprises at least one reduction stage 37, 38, 39. The reduction stage 37, 38, 39, one of the reduction stages 37, 38, 39 or each reduction stage 37, 38, 39 is of the epicyclic 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 subsequently called first reduction stage 37, second reduction stage 38 and third reduction stage 39.

[0115] The number of reduction stages of the reducer is not limiting. The number of reduction stages may be one, two or greater than or equal to four.

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

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

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

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

[0120] Advantageously, the brake 25 is configured to be arranged, in other words is arranged, 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 arranged opposite the electric motor 16, in other words faces the electric motor 16, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the second end 19b of the reducer 19 is arranged opposite the output shaft 20 of the electromechanical actuator 11, in other words faces the output shaft 20 of the electromechanical actuator 11, in particular 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. Furthermore, 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 sun gear 46 and a plurality of satellite gears 61, in this case three in number.

[0124] The number of planet gears of the first, second and third reduction stages is not limiting and may be different. The number of planet gears of 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 represented in [Fig.5].

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

[0129] The number and type of the fastening elements are not limiting and may be different. They may be, for example, three in number and arranged at an angle of 120° to each other, around the axis of rotation of the reducer. They may also be, for example, screw fastening elements.

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

[0131] As a variant, not shown, the housing 47 is made in a single part. In this case, all of the reduction stages 37, 38, 39 of the reducer 19 are housed, in other words are mounted, in the same and single 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 is 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, around the rotation axis X19, such as projecting elements cooperating with notches of corresponding shape. These indexing elements are two in number and arranged diametrically opposite relative to the rotation axis X19, in other words at 180° to each other, around the rotation axis X19.

[0135] The number and type of indexing elements are not limiting and may be different. They may be, for example, three in number and 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 sun gear 46 of the first reduction stage 37.

[0138] As a variant, not shown, the sun gear 46 of the first reduction stage 37 is carried by the input shaft 43 of the reducer 19.

[0139] Thus, whatever the embodiment, the sun gear 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 arranged, in other words is configured to be arranged, inside the output shaft 20 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.

[0142] As a variant, 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, in particular 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 arranged, in other words is configured to be arranged, in the vicinity of the second end 17b of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

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

[0147] Advantageously, one end of the output shaft 20 of the electromechanical actuator 11 projects relative to the casing 17 of the electromechanical actuator 11, in particular relative to the second end 17b of the casing 17.

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

[0149] When the electromechanical actuator 11 is put into operation, the electric motor 16 and the reducer 19 rotate the output shaft 20 of the electromechanical actuator 11. In addition, the output shaft 20 of the electromechanical actuator 11 rotates the winding tube 4 via the connecting element.

[0150] Thus, the winding tube 4 rotates the screen 2 of the occulting device 3, 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 is mounted, inside the casing 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] Means for controlling the electromechanical actuator 11, allowing the screen 2 of the occulting device 3 to be moved, 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 putting into operation the electric motor 16 of the electromechanical actuator 11 and, in particular, of allowing 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 of the electromechanical actuator 11 comprise hardware and / or software means.

[0158] By way of non-limiting example, the hardware means may comprise 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 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 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 orders.

[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, arranged inside the building B or remote outside the building B, 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 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 which can be connected to the server 28.

[0164] The control unit 15 can be controlled 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 provided with a control keyboard. The control keyboard of the local control unit 12 or the central control unit 13 comprises 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 push buttons and / or sensitive keys. The display elements may be 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 produced using a touch screen.

[0166] Advantageously, the local control unit 12 and / or the central control unit 13 comprises at least one 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 emit, control commands, in particular by wireless means, for example radioelectric, and / or by wired means.

[0168] Furthermore, the second communication module 36 of the local control unit 12 or of the central control unit 13 can also be configured to receive, in other words receives, control orders, in particular via 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 in a unidirectional manner or in a bidirectional manner.

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

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

[0173] The motorized drive device 5, in particular the control unit 15, is preferably configured to execute movement control orders, in particular for closing, as well as for opening, the screen 2 of the occulting device 3. These control orders 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 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.

[0175] Advantageously, the occultation installation 6 further comprises at least one sensor 32.

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

[0177] Advantageously, the sensor 32 may be, for example, an illumination 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 command corresponding to at least one signal from the sensor 32.

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

[0180] Additionally or alternatively, the sensor 32 and / or the clock may 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 arranged, in other words is configured to be arranged, in the vicinity of the first end 17a of the casing 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 guiding the rotation of the winding tube 4, around the casing 17 of the electric actuator. electromechanical 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 comprises a device for detecting end of travel and / or obstacles, when moving the screen 2. This device can be mechanical or electronic.

[0185] Advantageously, the end-of-travel 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 rotated about the axis of rotation X and the casing 17 of the electromechanical actuator 11 while being supported by means of two pivot connections. The first pivot connection is made at a first end of the winding tube 4 by means of the crown. The crown thus makes it possible to produce a bearing. The second pivot connection, 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 arranged at the first end 17a of the casing 17 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.

[0189] The torque support 21 makes it possible to take up the forces exerted by the electromechanical actuator 11, in particular the torque exerted by the electromechanical actuator 11, relative to the structure of the building B. The torque support 21 advantageously makes it possible to take up, in addition, forces exerted by the winding tube 4, in particular the weight of the winding tube 4, of the electromechanical actuator 11 and of the screen 2, and to ensure the take-up of these forces by the structure of the building B.

[0190] Thus, the torque support 21 makes it possible to fix the electromechanical actuator 11 to the holding device 9, 23, in particular to one of the supports 23 or to one of the cheeks 10 of the box 9.

[0191] Advantageously, the torque support 21 projects at the level of the first end 17a of the casing 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 casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

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

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

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

[0196] Here, the torque support 21 comprises a notch 41, which may be called a second notch 41, in particular in the form of a radial projection, as illustrated in [Fig.4]. The casing 17 comprises a notch, not shown, which may be called a second notch. The notch is provided at the first end 17a of the casing 17. Furthermore, the notch 41 of the torque support 21 is configured to be fitted, in other words is fitted, in the notch of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

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

[0198] As a variant, not shown, the torque support 21 comprises two notches 41, which are diametrically opposite relative to the axis of rotation X. In addition, the casing 17 then comprises two notches, which are also diametrically opposite relative to the axis of rotation X.

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

[0200] Thus, the attachment of the torque support 21 to the casing 17 makes it possible to block the torque support 21 in translation relative to the casing 17, in the vicinity of the first end 17a of the casing 17, in the direction of the axis of rotation X.

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

[0202] Here, the fixing of the torque support 21 with the casing 17 is implemented by means of fixing screws, not shown, in particular two in number and 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 casing 17 and is screwed into a fixing hole 45 of the torque support 21. Furthermore, each fixing screw can pass through a through hole, not shown, provided in the crown.

[0203] The number of fixing screws is not limiting and may be different. It may be, for example, one or greater than or equal to three.

[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 casing 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 holding device 9, 23, in particular in an assembled configuration of the electromechanical actuator 11 in the occulting device 3.

[0206] In an exemplary embodiment, the second part 21b of the torque support 21 is assembled, in other words is 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 is made up 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 holding elements, not shown, of the holding device 9, 23.

[0209] In another exemplary embodiment, the torque support 21 may consist of a single piece forming the first and second parts 21a, 21b of the torque support 21. Thus, the torque support 21 is produced by means of a single piece.

[0210] Advantageously, the second part 21b of the torque support 21 can have different external shapes, in particular a fluted shape, called “star-shaped”, in other words comprising reliefs on its outline, or a round shape, in other words devoid of reliefs on its outline.

[0211] Advantageously, at least a portion of the first part 21a of the torque support 21 is of generally cylindrical shape and is arranged, in other words is configured to be arranged, inside the casing 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 casing 17.

[0213] Advantageously, the torque support 21 further comprises a stop 33. Furthermore, the stop 33 bears, in other words is configured to bear, against the casing 17, at the level of the first end 17a of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0214] Thus, the stop 33 of the torque support 21 makes it possible to limit the sinking of the first part 21a of the torque support 21 into the casing 17, in the direction of the axis of rotation X.

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

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

[0217] As a variant, not shown, the crown is arranged, in other words is configured to be arranged, around a part of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the crown is mounted to rotate freely around the casing 17.

[0218] In another variant, not shown, the crown is arranged, in other words is configured to be arranged, on the one hand, around the torque support 21 and, on the other hand, around a part of the casing 17 of the electromechanical actuator 11, in particular the first end 17a of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11. In such a case, the crown is mounted free to rotate, on the one hand, around the torque support 21 and, on the other hand, around the casing 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 arranged at least partly inside the casing 17 of the electromechanical actuator 11.

[0222] Furthermore, the control unit 15 may be arranged at least partly outside the casing 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 one second electronic card, not shown.

[0224] In an exemplary embodiment, the first electronic card is arranged inside the casing 17 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11. Furthermore, the second electronic card is arranged inside the torque support 21 of the electromechanical actuator 11, in particular 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]. In addition, the or each selection device 44 is configured, in particular, to carry out an adjustment of the electromechanical actuator 11 through one or more configuration modes, to pair with the electromechanical actuator 11 one or more control units 12, 13, to reset one or more parameters, which may be, for example, an end-of-travel 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. In addition, the or each display device is configured, in particular, to display a visual indication, which may be, for example, representative of an operating mode of the electromechanical actuator 11, in particular a configuration mode or a control mode, or even of a state of a member of the motorized drive device 5.

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

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

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

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

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

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

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

[0234] The electromechanical actuator 11 further comprises 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 fastening element 52a belongs to the housing 47 and each fastening element 52b belongs to the end cover 49.

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

[0239] The number and type of fixing elements are not limiting and may be different. They may be, for example, 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, in other words crenellations, which can be called first notches 50a and first tabs 50b, arranged alternately around the axis of rotation X. The end cover 49 comprises tabs 51a and notches 51b, in other words crenellations, which can be called second tabs 51a and second notches 51b, arranged alternately around the axis of rotation X. Furthermore, the notches 50a and the tabs 50b of the reducer 19 are nested, in other words are configured to be nested, in the tabs 51a and the notches 51b of the end cover 49, in particular in the configuration assembly of the electromechanical actuator 11, as shown in [Fig.5].

[0241] Thus, the tabs 50b of the reducer 19 are configured to engage in the notches 51b of the end cover 49. Furthermore, 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 comprises an end wall 50b 1. Each of the notches 51b of the end cover 49 comprises a bottom wall 51b 1. Furthermore, the bottom wall 51b 1 of one of the notches 51b of the end cover 49 is pressed, in other words is configured to be pressed, 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 for the reducer 19, in particular the housing 47, relative to the end cover 49, in the direction of the axis of rotation X.

[0244] In this way, the stop formed by the support of the bottom wall 51b 1 of the notches 51b with the end wall 50bl of the tabs 50b makes it possible, on the one hand, to position the reducer 19 inside the casing 17, in the direction of the axis of rotation X, and, on the other hand, to block a translational movement of the reducer 19 inside the casing 17, in 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°, around 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°, around the axis of rotation X. Each fastening element 52a is arranged between two series 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°, around the axis of rotation X. Each fastening element 52b is arranged between two series of three adjacent notches 51b. Furthermore, the end cover 49 comprises 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 fixing elements of the reducer and the end cover are not limiting and may be different. For example, in the case where the reducer, in particular the housing and the end cover are devoid of fixing elements, the notches and tabs may be three in number and angularly offset by an angle of 120° around the axis of rotation or four 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] As a variant, 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, in other words 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 arranged at the second end 17b of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11. In [Fig.5], only a portion of the casing 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 casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

[0251] Advantageously, the end cover 49 comprises a central opening 54 for the passage of the output shaft 20. Furthermore, the output shaft 20 is configured to extend, in other words extends, on either side of the end cover 49 by passing through the central opening 54, in particular 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 axis of rotation X of the electromechanical actuator 11 passes through a center of the members 16, 19, 20, 21, 25, 49 mounted at least partly inside the casing 17, such as the electric motor 16, the reducer 19, the output shaft 20, the end cover 49 and, possibly, the brake 25 and the torque support 21.

[0254] The end cover 49 comprises 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 FIGS. 4 to 6 and 8. The casing 17 comprises at least one notch 56, which may be called the first notch 56. The or each notch 56 is provided at the second end 17b of the casing 17. Furthermore, the or each notch 55 is configured to be fitted, in other words is fitted, in the or one of the notches 56 of the casing 17, in particular in the assembled configuration of the electromechanical actuator 11.

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

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

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

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

[0259] Here, the end cover 49 comprises two notches 55, which are diametrically opposite relative to the axis of rotation X, only one of which is visible in [Fig. 3], but which are both visible in Figures 6 and 8. The casing 17 comprises two notches 56, at its second end 17b, which are also diametrically opposite relative to the axis of rotation X. Furthermore, each of the notches 56 receives, in other words is configured to receive, one of the notches 55, in particular in the assembled configuration of the electromechanical actuator 11.

[0260] As a variant, not shown, the end cover 49 comprises a single notch 55 and the casing 17 comprises a single notch 56, at its second end 17b.

[0261] In another variant, not shown, the end cover 49 comprises three notches 55, which are angularly offset by an angle of 120° around the axis of rotation X, or four notches 55, which are angularly offset by an angle of 90° around the axis of rotation X. In this case, the casing 17 comprises, respectively, three notches 56, which are angularly offset by an angle of 120° around 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 or each notch 55 of the end cover 49 comprises at least a first side edge 55a and a second side edge 55b. The second side edge 55b is opposite the first side edge 55a.

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

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

[0265] Advantageously, the or each notch 56 of the casing 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 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 or each notch 55 is inclined, relative 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, relative to the median plane P, makes it possible to improve the mechanical strength of the end cover 49 on the casing 17 and to dispense with one or more elements for fixing the reducer 19 relative to the casing 17, in particular of the pin type, screw type or holding notch type, so as to guarantee transmission of torque from the reducer 19 to the output shaft 20, during 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, relative to the median plane P, makes it possible to wedge each of the first and second lateral edges 56a, 56b of the or one of the notches 56 of the casing 17 at the level of each junction zone 58.

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

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

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

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

[0275] Furthermore, the casing 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 zone 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 or each junction zone 58 corresponds to a re-entrant dihedral, in other words to a shoulder.

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

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

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

[0281] Advantageously, the body 49a of the end cover 49 comprises a flat 60 provided at the level of each junction zone 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 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 casing 17 deforms, in other words is configured to deform, at a zone formed by the flat 60 formed at each junction zone 58 of the end cover 49, so as to wedge the casing 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 casing 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 casing 17 is oriented towards the inside 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 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 casing 17, in the assembled configuration of the electromechanical actuator 11, from the outside of the casing 17.

[0288] Furthermore, 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 casing 17, as illustrated in [Fig.6]. The outer surface 17d of the casing 17 is the unpainted outer surface of the casing 17. or raw. In other words, the outer surface 17d of the casing 17 corresponds to the outer surface of the casing 17 before the application of the layer of paint thereon.

[0289] Thus, each of the first and second lateral edges 56a, 56b of the or each notch 56 of the casing 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 an alignment of the outer surface 55e of the or each notch 55 relative to the outer surface 17d of the casing 17, in a direction radial to the axis of rotation X, in particular during the 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 relative to the outer surface 17d of the casing 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 casing 17, in which this notch 55 is fitted, by passing under the inner surface 17c of the casing 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 layer of paint, the outer surface 55e of the or each notch 55 is flush with the painted outer surface of the casing 17, the outer surface of the casing 17 being defined as being an outer surface after the application of the layer of paint on the outer surface 17d of the casing 17.

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

[0293] Advantageously, the end cover 49 and the casing 17 are fixed, in other words are configured to be fixed, between them, by means of fixing elements 57a, 57b, which can 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 casing 17 makes it possible to block, in translation, the end cover 49, as well as the reducer 19, relative to the casing 17, in the vicinity of the second end 17b of the casing 17, in 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, when assembling the electromechanical actuator 11 and when handling the electromechanical actuator 11 in a mounted state, along the direction of the rotation axis X.

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

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

[0298] Here, the attachment of the end cover 49 with the casing 17 is implemented by means of clips 57a, in particular two in number, provided on the end cover 49, and openings 57b, in particular two in number, provided in the casing 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-fastening elements is not limiting and may be different. It may be, for example, one or greater than or equal to three.

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

[0301] Advantageously, the fixing elements 57a, 57b constitute a positioning stop for the end cover 49 relative to the casing 17, at the level of the second end 17b of the casing 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 placing a surface, in particular the end surface, 57a 1 of the or each clip 57a in contact with an edge 57b 1 of the or one of the openings 57b.

[0303] Thus, this positioning stop produced by means of the fixing elements 57a, 57b makes it possible to limit the sinking of the end cover 49 inside the casing 17, in the direction of the axis of rotation X.

[0304] Advantageously, the end cover 49 further comprises a collar 53, as illustrated in FIGS. 5 and 7. Furthermore, the collar 53 bears, in other words is configured to bear, against the inner surface 17c of the casing 17, in particular 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 casing 17 by exerting pressure against the inner surface 17c of the casing 17.

[0306] In this way, the sealing of the electromechanical actuator 11, at the second end 17b of the casing 17, is implemented, on the one hand, by the fitting of the end cover 49 inside the casing 17, so as to close the second end 17b of the casing 17, and, on the other hand, by the support of the collar 53 of the end cover 49 against the inner surface 17c of the casing 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, relative to the median plane, makes it possible to improve the mechanical hold of the end cover on the casing and to dispense with one or more elements for fixing the reducer relative to the casing, so as to ensure torque transmission from the reducer to the output shaft, when the electric motor is electrically activated.

[0308] Numerous modifications can be made to the embodiments described above without departing from the scope of the invention.

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

[0310] As a variant, not shown, the brake 25 is configured to be arranged, in other words is arranged, 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 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 reduction gear (19), - a casing (17), the electric motor (16) and the reduction gear (19) being mounted inside the casing (17), - an output shaft (20), the reducer (19) being assembled with the output shaft (20), and - an end cover (49), the casing (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 arranged at the second end (17b) of the casing (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 or each notch (56) being provided at the second end (17b) of the casing (17), the end cover (49) comprising at least: - a notch (55), the or each notch (55) being fitted into the or one of the notches (56), the 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), the electromechanical actuator (11) comprising an axis of rotation (X) passing through a center of the members (16, 19, 20, 49) mounted at least partly inside the casing (17), the 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 each notch (55) is inclined, relative to the median plane (P), by an angle (a) whose value is between 5° and 45°.

2. An electromechanical actuator (11) of a concealing device (3) according to claim 1, characterized in that the end cover (49) further comprises a body (49a), the body (49a) comprising an outer surface (49al), and in that the outer surface (49al) of the body (49a) is mounted against the inner surface (17c) of the housing (17) with an interference fit.

3. Electromechanical actuator (11) of a concealment device (3) according to claim 2, characterized in that the or each notch (55) extends from the external surface (49al) of the body (49a), in a direction radial to the axis of rotation (X) and towards the outside of the end cover (49), in that the end cover (49) further comprises a junction zone (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), and in that the body (49) comprises a flat (60) formed at each junction zone (58).

4. Electromechanical actuator (11) of a concealing device (3) according to any one of claims 1 to 3, characterized in that the casing (17) is a tube having a circular section, in that the casing (17) is covered with a layer of paint deposited at least on the outer surface (17d) of the casing (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 casing (17), the outer surface (17d) of the casing (17) being the outer surface of the casing (17) unpainted.

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

6. Electromechanical actuator (11) of a concealing device (3) according to any one of claims 1 to 5, characterized in that the end cover (49) and the casing (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 casing (17) are elastic snap-fastening fixing elements.

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

8. Electromechanical actuator (11) of a concealing 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 concealment 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 concealing device (3), the concealing 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) is in accordance with any one of claims 1 to 9.

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