CN117328791A

CN117328791A - Motorized drive for a masking device, and associated masking device

Info

Publication number: CN117328791A
Application number: CN202310789669.2A
Authority: CN
Inventors: 昆汀·勒平; 埃里克·拉加德; S·图梅雷尔
Original assignee: Somfy SA
Current assignee: Somfy SA
Priority date: 2022-06-30
Filing date: 2023-06-29
Publication date: 2024-01-02
Also published as: FR3137404A1

Abstract

The present invention relates to a motorized drive for a masking device and to a related masking device. The motorized drive apparatus includes a drive module. The driving module comprises an electric motor, a transmission device and a driving wheel. The transmission includes a decelerator. The speed reducer comprises a worm and gear system and a gear system. The gear system includes a pivot arm, an input gear, a planetary gear, and an output gear. The pivot arm is coupled to the input gear. The planet gears are mounted on the pivot arm. The planetary gear is configured to mesh with the output gear according to an angular orientation of the pivot arm relative to the input gear. Furthermore, a first end of a first rotation shaft of the planetary gear is placed in a first bore of the pivot arm and a second end of the first rotation shaft is placed in a volume formed between two holding lugs of the pivot arm.

Description

Motorized drive for a masking device, and associated masking device

Technical Field

The present invention relates to a motorized drive for a masking device, in other words, to a motorized drive for a masking device. The motorized drive is configured or arranged to move at least one barrier along the rod with a sliding motion.

The invention also relates to a masking device provided with such a motorized drive.

The present invention relates generally to the field of curtains. The window covering includes a motorized drive arrangement. The motorized drive moves the barrier along the rod between at least one first position and at least one second position with the sliding motion.

Background

The document WO2021/105320A1 describes a motorized drive for a masking device. The motorized drive apparatus includes a drive module. The driving module comprises an electric motor, a transmission device and a driving wheel. The transmission is configured to be coupled to the motor. The drive wheel is configured to be driven in rotation about a first axis of rotation by the motor and transmission and is in contact with a first surface of the rod of the masking device to move the motorized drive device along the rod in a direction of movement. The transmission includes a decelerator. The speed reducer comprises a worm and gear system and a gear system. The worm and gear system comprises a worm wheel and a worm, and the worm wheel is meshed with the worm. The gear system includes a pivot arm, an input gear, a planetary gear, and an output gear. The worm wheel of the worm and gear system rotates integrally with the input gear. The pivot arm is coupled to the input gear. The planet gears are mounted on the pivot arm. The planetary gear is configured to mesh with the output gear according to an angular orientation of the pivot arm relative to the input gear. The output gear is fixed to the drive wheel. The motorized drive arrangement is generally satisfactory.

However, this document does not mention the assembly of the gear system, more specifically the assembly of the planetary gears on the pivot arm. The holding of the planetary gear relative to the drive arm is not described in detail.

Disclosure of Invention

The present invention aims to overcome the above drawbacks and to provide a motorized drive arrangement of a masking device, and a masking device comprising such a motorized drive arrangement, which makes it possible to ensure the separation of the transmission of the motorized drive arrangement from the drive wheels of the motorized drive arrangement, while reducing the operating noise of the transmission and reducing the acquisition costs of the motorized drive arrangement.

To this end, according to a first aspect, the invention relates to a motorized drive arrangement for a masking device,

the motorized drive apparatus includes at least a drive module;

the driving module at least comprises:

-an electric motor;

-a transmission configured to be coupled to the motor; and

-a drive wheel configured to be driven in rotation about a first rotation axis by means of an electric motor and transmission means and in contact with a first surface of a rod of the masking device for moving the motorized drive means along the rod in a direction of movement;

the transmission device comprises a speed reducer;

the speed reducer includes:

-a worm and gear system; and

-a gear system;

the worm gear system includes:

-a worm wheel; and

-a worm, the worm wheel being in engagement with the worm;

the gear system includes:

-a pivot arm;

-an input gear, with which a worm wheel of the worm gear system rotates integrally, a pivot arm being coupled to the input gear;

-a planetary gear mounted on the pivot arm; and

an output gear configured to mesh with the output gear according to an angular direction of the pivot arm relative to the input gear, the output gear being fixed to the drive wheel.

According to the invention, the pivot arm comprises at least:

-a first bore; and

two holding lugs.

The planetary gear includes a first rotation shaft. The first rotating shaft includes a first end and a second end opposite the first end. In addition, a first end of the first rotary shaft is disposed within the first bore of the pivot arm and a second end of the first rotary shaft is disposed within the volume formed between the two retaining lugs to retain the planetary gear on the pivot arm.

This assembly of the gear system, and more particularly of the planetary gear on the pivot arm, thus ensures a separation of the transmission from the drive wheel, while reducing the operating noise of the transmission and reducing the acquisition costs of the motorized drive.

Furthermore, the two holding lugs of the pivot arm each form a bearing. Each bearing is configured to be in contact with the second end of the planetary gear first rotation shaft, in other words, each bearing is in contact with the second end of the planetary gear first rotation shaft, in particular in a combined structure of the gear system.

In this way, the abutment of the two holding lugs of the pivot arm against the second end of the first rotational axis of the planetary gear ensures friction between the pivot arm and the planetary gear without additional components.

According to an advantageous feature of the invention, the drive module further comprises a cover. The cover includes at least one stop. Further, each of the retaining lugs of the pivot arm is configured to abut against a stop of the cover when the planetary gear is engaged with the output gear.

According to another advantageous feature of the invention, the wheel of the worm gear system forms with the input gear a first assembly, which is made of a single piece.

According to another advantageous feature of the invention, the first assembly comprises a second rotation axis. The second rotating shaft includes a first end and a second end, the second end being opposite the first end. Further, each of the first and second ends of the second rotating shaft remain in position within the first aperture of the housing.

According to another advantageous feature of the invention, the driving wheel comprises:

-a rim; and

-a tread.

Furthermore, the rim of the drive wheel and the output gear form a second assembly, which is made of a single piece.

According to another advantageous feature of the invention, the second assembly comprises a third rotation shaft. The third rotation shaft includes a first end and a second end opposite the first end. Further, each of the first and second ends of the third rotation shaft remain in position in the second aperture of the cover.

According to another advantageous feature of the invention, the drive module further comprises a shutter. Furthermore, a baffle is arranged between the worm wheel of the worm and gear system and the driving wheel.

According to another advantageous feature of the invention, the baffle is formed in the cover.

According to another advantageous feature of the invention, the wheel worm system has a first reduction ratio and the gear system has a second reduction ratio. Further, the first reduction ratio is greater than the second reduction ratio, which is strictly less than ten.

According to a second aspect, the present invention relates to a screening arrangement comprising at least:

-a barrier;

-a rod; and

according to the invention and as described above, the barrier is suspended on the rod and is movable along the rod by the motorized drive.

The masking device has similar features and advantages to the motorized drive arrangement of the present invention described hereinabove.

Drawings

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the accompanying drawings. The drawings are illustrative, and not restrictive. In the drawings:

FIG. 1 is a schematic perspective view of a masking or sun device comprising a window covering configured to be moved along the rod by a motorized drive apparatus in accordance with an embodiment of the present invention, the window covering having a cross-sectional area for showing the motorized drive apparatus, the rod being partially shown and being a track having a slot for moving a fastening element of the window covering relative to the rod, and a motorized drive apparatus mounted on the rod;

FIG. 2 is a view similar to FIG. 1 with the motorized drive arrangement separated from the lever;

fig. 3 is a first schematic exploded perspective view of the motorized drive arrangement shown in fig. 1-2;

fig. 4 is a second schematic exploded perspective view of the motorized drive arrangement shown in fig. 1-3, according to a different perspective than fig. 3;

fig. 5 is a schematic perspective view of the drive module of the motorized drive arrangement shown in fig. 1-3, with a half-shell of the cover of the drive module omitted;

Fig. 6 is a schematic exploded perspective view of the drive module shown in fig. 3-5;

FIG. 7 is a schematic perspective view of a pivot arm of the reduction gear system of the drive module transmission shown in FIGS. 3-6;

FIG. 8 is a schematic perspective view of a planetary gear of the gear system of the reducer of the drive module transmission shown in FIGS. 3-6; and

fig. 9 is a schematic perspective view of a half shell of the cover of the drive module shown in fig. 3-6.

Detailed Description

First, referring to fig. 1 and 2, a home automation device 1 according to an embodiment of the present invention is described. The home automation device 1 comprises a masking or sun shading device 3 according to an embodiment of the invention. The home automation equipment 1 installed in a building (not shown) has an opening (not shown). A window or door is arranged in the opening. The window or door is provided with at least one barrier 2 belonging to a screening or sun-shading device 3, in particular a motorized window treatment.

Hereinafter, the masking or sun-shading device 3 is referred to as a "masking device". The masking device 3 comprises a barrier 2. In the example of the figures, the barrier 2 is constituted by a curtain.

As a variant (not shown), the barrier 2 may consist of a shade cloth, gauze or foil.

The masking device 3 further comprises at least one rod 4. The rod 4 may also be referred to as a lattice bar or rail. The rod 4 is a supporting element of the barrier 2 of the screening arrangement 3. The barrier 2 is suspended from the rod 4.

Here, in the combined structure of the home automation device 1, the lever 4 is configured to be fixed to a wall W of a building room by a fixing support 25; in other words, in the combined structure of the home automation device 1, the rod 4 is fixed to the wall W of the building room by the fixing support 25. In particular, the number of fixed supports 25 is two, only one of which is shown in fig. 1 and 2.

As a variant (not shown), the rod 4 is configured to be fixed to the ceiling of a building room by a fixed support; in other words, the rod 4 is fixed to the ceiling of the building room by means of a fixed support, in particular in the combined structure of the home automation device 1.

The number and type of the fixing supports are not limited, and the fixing supports may have different numbers and types.

Here, the screening device 3 comprises a single barrier 2 which is movable along a rod 4.

As a variant (not shown), the masking device 3 comprises two barriers 2. The two barriers 2 can be moved along the same rod 4 or along two separate and parallel rods. In the case where two barriers 2 are movable along the same rod 4, each of the two barriers 2 is arranged near one end of the rod 4.

The rod 4 further comprises at least one first surface 5 and possibly a second surface 6.

Advantageously, the first surface 5 of the rod 4 is constituted by a first portion of the outer surface of the rod 4.

The rod 4 comprises an upper wall 4a, a lower wall 4b and two side walls 4c.

The rod 4 may also comprise an intermediate wall 4i. The intermediate wall 4i is located between the upper wall 4a and the lower wall 4 b.

Here, as shown in fig. 1 and 2, the rod 4 comprises at least one groove 65. A groove 65 is formed in the lower wall 4b of the rod 4. The lower wall 4b of the rod 4 comprises a first portion 4g and a second portion 4d located on either side of the slot 65.

Here, as shown in fig. 1 and 2, the rod 4 comprises at least one further groove 65'. A slot 65' is formed in the upper wall 4a of the rod 4.

The rod 4 here has a rectangular cross section.

The cross section of the rod is not limited and may be different. For example, the cross section may be square.

Advantageously, the groove 65 and possibly the further groove 65' of the rod 4 extend in the longitudinal direction of the rod 4. Thus, the slot 65 and possibly the further slot 65' may be referred to as a longitudinal slot.

Advantageously, the lower wall 4b of the rod 4 comprises an inner surface and an outer surface.

Advantageously, as shown in fig. 1 and 2, the rod 4 also comprises a hollowed-out portion 66.

Here, the hollowed-out portion 66 of the lever 4 is formed between the upper wall 4a, the lower wall 4b, and the side wall 4c of the lever 4, and more specifically, between the intermediate wall 4i, the lower wall 4b, and the side wall 4c of the lever 4.

The screening device 3 here also comprises fastening elements 53 of the barrier 2. In the combined structure of the screening arrangement 3, the fastening element 53 is configured to constrain the barrier 2 relative to the rod 4 and to move along the rod 4 with the barrier 2.

Here, the first surface 5 further comprises at least one first track 5a and at least one second track 5b. Furthermore, the second surface 6 comprises at least one first track 6a and at least one second track 6b.

Advantageously, the first rail 5a and the second rail 5b of the first surface 5 are arranged on both sides of the groove 65 of the rod 4. Further, the first rail 6a and the second rail 6b of the second surface 6 are provided on both sides of the groove 65 of the lever 4.

Advantageously, the first rail 5a and the second rail 5b of the first surface 5 are formed by the outer surface of the lower wall 4b of the rod 4, and more specifically by the outer surface of the first portion 4g and the second portion 4d of the lower wall 4b of the rod 4. Further, the first rail 6a and the second rail 6b of the second surface 6 are formed by the inner surface of the lower wall 4b of the rod 4, and more specifically by the inner surfaces of the first portion 4g and the second portion 4d of the lower wall 4b of the rod 4.

Advantageously, each fastening element 53 comprises at least one first wheel and at least one second wheel (not shown). The first and second wheels of the fastening element 53 are configured to abut against the first and second rails 6a, 6b of the second surface 6, respectively, in particular in the combined structure of the masking device 3.

Advantageously, the first wheel and the second wheel of each fastening element 53 are configured to rotate freely about the rotation axis.

Advantageously, in the mounting configuration in which the fastening elements 53 are mounted on the rod 4, the rotation axis of the first and second wheel of each fastening element 53 is orthogonal to the direction of movement D of the barrier 2 along the rod 4.

Advantageously, each fastening element 53 further comprises a ring 48. The ring 48 is configured to suspend the barrier 2 on the rod 4, in particular in the combined structure of the screening arrangement 3. Furthermore, the ring 48 is configured to extend through the slot 65 of the rod 4, in particular in the combined structure of the screening arrangement 3.

The ring 48 of each fastening element 53 is here circular.

The shape of the loop of each fastening element is not limited, and the shape of the loop may be different. For example, the shape of the ring may be triangular or elliptical.

Advantageously, the masking device 3 further comprises hooks 75. Each hook 75 is configured to be attached to a barrier 2; in other words, each hook 75 is attached to the barrier 2. Furthermore, the ring 48 of each fastening element 53 is configured to receive one of the hooks 75; in other words, the loop 48 of each fastening element 53 accommodates one of the hooks 75 in order to suspend the barrier 2 on the rod 4, and more specifically on the fastening element 53.

The masking device 3 further comprises at least one motorized drive 10. The motorized drive arrangement 10 is configured to be suspended from the rod 4, in other words, the motorized drive arrangement 10 is suspended from the rod 4, in particular in the combined structure of the masking device 3; and is configured to move along the rod 4 in order to close or open the barrier 2. Thus, the barrier 2 can be moved along the rod 4 by the motorized drive 10.

The rod 4 is here a guide bracket for the motorized drive 10.

Here, a motorized drive apparatus 10 of the masking apparatus 3 shown in fig. 1 and 2 will be described with reference to fig. 1 to 6.

Motorized drive apparatus 10 includes a drive module 49.

Advantageously, the motorized drive apparatus 10 further comprises a housing 43.

Here, the housing 43 comprises an upper side 43d, a lower side 43e and a peripheral contour 43c. The upper side 43d is opposite to the lower side 43e and is located at the top of the housing 43 in the combined structure of the home automation device 1, while the lower side 43e is located at the bottom of the housing 43. The peripheral contour 43c is disposed between the upper side 43d and the lower side 43 e.

Advantageously, the drive module 49 is placed inside the housing 43; in other words, the drive module 49 is configured to be disposed within the housing 43, particularly in the combined structure of the motorized drive apparatus 10.

Advantageously, as shown in fig. 3, motorized drive apparatus 10 also includes an electrical power source 12.

Here, the power source 12 includes a plurality of dry cells 27.

There is no limitation on the type of power source, and the type of power source may be different. For example, the power source may be a battery.

The power source 12 may be rechargeable, in particular by means of a charger or a photovoltaic panel, also referred to as an accumulator.

Advantageously, motorized drive apparatus 10 is configured to allow manual movement of barrier 2 if the load condition of power source 12 is below a threshold.

Advantageously, the motorized drive apparatus 10 further comprises a support 40. In addition, the power source 12 is disposed within the support 40; in other words, the power source 12 is configured to be disposed within the support 40, particularly in the combined structure of the motorized drive apparatus 10.

The motorized drive 10 includes, here without limitation, four dry cells 27 arranged inside the support 40.

Advantageously, the support 40 is placed inside the casing 43; in other words, the support 40 is configured to be placed inside the housing 43, in particular in the combined structure of the motorized drive apparatus 10.

Here, the case 43 includes a first half case 43a and a second half case 43b. Furthermore, the first half-shell 43a and the second half-shell 43b are configured to be assembled together by means of a fixing element (not shown); in other words, the first half-shell 43a and the second half-shell 43b are assembled together by means of a fastening element, in particular in the combined construction of the motorized drive arrangement 10.

The fixing element of the housing 43 may be, for example, a screw fixing element.

There is no limitation on the type of fixing element of the first and second half-shells, and the type of fixing element may be different. For example, the fixation element may be a resilient snap fixation element.

Advantageously, the support 40 forms part of the housing 43, in particular the bottom of the housing 43, in order to access the power source 12, in particular for replacement of the power source. In this case, the support 40 defines an underside 43e of the housing 43.

Thus, the support 40 forms a drawer arranged between the first half-shell 43a and the second half-shell 43b and is configured to introduce the electric power source 12 inside the shell 43 and to remove it outside the shell 43.

Advantageously, the support 40 comprises two fastening elements 41, one of which is visible in fig. 1 to 3 and the other one in fig. 3 and 4. The housing 43 comprises two openings 45, one of which is visible in fig. 1, 2 and 4 and the other of which is visible in fig. 3 and 4. Each fastening element 41 is configured to cooperate (in particular by means of a resilient snap-fit) with one of the openings 45 of the housing 43 (in particular with the edge 47 of one of the openings 45); in other words, each fastening element 41 cooperates with one of the openings 45 of the housing 43 in order to keep the support 40 in position within the housing 43, in particular in the combined construction of the motorized drive apparatus 10.

Here, without limitation, each opening 45 is realized by leaving a combination of two cuts 45a, 45b on the edge of each of the first half-shell 43a and the second half-shell 43 b.

As shown in fig. 3, 5 and 6, the drive module 49 includes the motor 11.

Advantageously, the electric motor 11 is configured to be supplied with electric energy by an electric power source 12; in other words, the motor 11 is supplied with electric energy by the electric power source 12.

Here, the motor 11 is of a brushless type with electronic switches, also called brushless direct current (BrushLess Direct Current, BLDC) or "permanent magnet synchronous", or direct current type.

Here, each fastening element 53 is configured to move along rod 4 during the electrical activation of motor 11 of motorized drive apparatus 10; in other words, each fastening element 53 is moved along rod 4 during the electrical activation of motor 11 of motorized drive 10, then pushed or pulled in slot 66 of rod 4 in order to close or open barrier 2.

As shown in fig. 3-6, the drive module 49 also includes a transmission 28. The transmission 28 is configured to be connected to the motor 11; in other words, the transmission 28 is connected to the electric motor 11, in particular in the combined structure of the drive module 49.

Advantageously, the motor 11 and the transmission 28 are housed inside the casing 43; in other words, the electric motor 11 and the transmission 28 are configured to be disposed within the housing 43, particularly in the combined construction of the motorized drive arrangement 10.

The drive module 49 further includes a drive wheel 13. Furthermore, the driving wheel 13 is configured to be driven in rotation about a first rotation axis X13 as shown in fig. 1, 3 to 5 by means of the motor 11 and the transmission 28 and in contact with the first surface 5 of the rod 4, so that the motorized drive 10 is moved along the rod 4 in the direction of movement D. In other words, when the motorized drive arrangement 10 is in operation (in other words during the electrical activation of the motor 11), the drive wheel 13 is driven in rotation by the motor 11 and the transmission 28 (in other words, the drive wheel 13 is configured to be driven in rotation by the motor 11 and the transmission 28) and is in contact with the first surface 5 of the rod 4 (in other words, is configured to be in contact with the first surface 5 of the rod 4).

Thus, the bar 4 (in particular the first surface 5 of the bar 4) is configured to cooperate with the driving wheel 13, in other words, the bar 4 (in particular the first surface 5 of the bar 4) cooperates with the driving wheel 13, in particular in the combined structure of the masking device 3.

The motorized drive 10 is here configured to move along the rod 4 in a direction of movement D. The direction of movement D of the motorized drive 10 with respect to the rod 4 corresponds to the longitudinal direction of the rod 4, parallel to the longitudinal axis A4 of the rod 4. Furthermore, the direction of movement D of motorized drive 10 relative to rod 4 is the same as the direction of movement of barrier 2 along rod 4.

Advantageously, the first rotation axis X13 of the driving wheel 13 is orthogonal to the direction of movement D of the motorized drive device 10 along the rod 4.

Advantageously, the motorized drive arrangement 10 is controlled by a control unit 15, 16. As shown in fig. 1, the control unit may be, for example, a local control unit 15 or a central control unit 16.

Advantageously, the local control unit 15 may be connected to the central control unit 16 either by wire or wirelessly.

Advantageously, the central control unit 16 can control the local control unit 15 as well as other similar local control units distributed in the building.

Motorized drive apparatus 10 is preferably configured to execute a command to close or open barrier 2 of masking apparatus 3. The command can be issued in particular by the local control unit 15 and/or the central control unit 16.

The home automation device 1 comprises either a local control unit 15 or a central control unit 16 or both the local control unit 15 and the central control unit 16.

As shown in fig. 3 and 4, the control means of the motorized drive means 10 for moving the barrier 2 of the masking device 3 comprise at least one electronic control unit 17. The electronic control unit 17 is capable of operating the electric motor 11 and in particular of supplying electric energy to the electric motor 11. The electronic control unit 17 is also capable of adjusting the rotational speed of the motor 11 and changing the rotational speed of the motor 11, in particular increasing the rotational speed when the motor 11 is started or decreasing the rotational speed when the motor 11 is stopped.

Thus, the electronic control unit 17 controls in particular the motor 11 in order to close or open the barrier 2.

The control means of motorized drive apparatus 10 comprise hardware and/or software means. As shown in fig. 4, the hardware device may include at least one microcontroller 18, as a non-limiting example.

Advantageously, as shown in fig. 4, the electronic control unit 17 comprises a first communication module 19. The first communication module 19 is in particular for receiving control commands. The control commands are sent by command transmitters such as the local control unit 15 and/or the central control unit 16. These commands are used to control motorized drive apparatus 10.

Preferably, the first communication module 19 of the electronic control unit 17 is wireless. In particular, the first communication module 19 is configured to receive radio control commands.

Advantageously, the electronic control unit 17, the local control unit 15 and/or the central control unit 16 may communicate with one or more sensors (not shown) arranged inside the building or remote from the outside of the building. The sensor may be configured to determine, for example, temperature, brightness, or humidity.

Advantageously, as shown in fig. 1, the electronic control unit 17, the local control unit 15 and/or the central control unit 16 may also communicate with the server 20 in order to control the motorized drive arrangement 10 according to data provided remotely by a communication network, in particular an internet network capable of being connected to the server 20.

The electronic control unit 17 may be controlled based on the local control unit 15 or the central control unit 16. The local control unit 15 or the central control unit 16 is provided with a control keyboard. The control keyboard of the local control unit 15 or the central control unit 16 comprises one or more selection elements 21 and optionally also one or more display elements 22.

As non-limiting examples, the selection element may include buttons and/or touch keys. The display element may comprise a light emitting diode and/or a display, such as a liquid crystal display (Liquid Crystal Display, LCD) or a thin film transistor (Thin Film Transistor, TFT). The selection element and the display element may also be realized by means of a touch screen.

The local control unit 15 or the central control unit 16 comprises at least one second communication module 23.

Thereby, the second communication module 23 of the local control unit 15 or the central control unit 16 is configured to send control commands; in other words, the second communication module 23 of the local control unit 15 or of the central control unit 16 sends control commands, in particular either by wireless means (for example radio) or by wired means.

Furthermore, the second communication module 23 of the local control unit 15 or the central control unit 16 may also be configured to receive control commands; in other words, the second communication module 23 of the local control unit 15 or the central control unit 16 may also receive control commands, in particular in the same way.

The second communication module 23 of the local control unit 15 or the central control unit 16 is configured to communicate with the first communication module 19 of the electronic control unit 17; in other words, the second communication module 23 of the local control unit 15 or the central control unit 16 communicates with the first communication module 19 of the electronic control unit 17.

Thereby, the second communication module 23 of the local control unit 15 or the central control unit 16 exchanges control commands with the first communication module 19 of the electronic control unit 17 in a unidirectional manner or in a bidirectional manner.

Advantageously, the local control unit 15 is a control point. The control point can be fixed or nomadic. The fixed control point may be a control box for fixing to the front face of a building wall or to a window or door frame surface. The nomadic control point may be a remote control, a smart phone or a tablet computer.

Advantageously, the local control unit 15 and/or the central control unit 16 further comprise a controller 24.

The motorized drive means 10, in particular the electronic control unit 17, are preferably configured to execute control commands of the movement (in particular the closing and opening) of the barrier 2 of the masking device 3. In particular, these control commands may be issued by the local control unit 15 or the central control unit 16.

Motorized drive apparatus 10 may be controlled by a user, for example, by receiving control commands corresponding to pressing one or more of the selection elements 21 of local control unit 15 or central control unit 16.

Motorized drive 10 may also be controlled automatically, for example by receiving control commands corresponding to at least one signal from at least one sensor (not shown), and/or to a signal from a clock of electronic control unit 17 (in particular microcontroller 18). As a variant, the sensor and/or the clock may be integrated into the local control unit 15 or the central control unit 16.

Advantageously, the electronic control unit 17 is housed inside the casing 43; in other words, the electronic control unit 17 is configured to be placed inside the housing 43, in particular in the combined structure of the motorized drive arrangement 10.

Advantageously, motorized drive 10, in particular drive module 49, comprises counting device 38 shown in fig. 3. Furthermore, the counting device 38 is configured to cooperate with the electronic control unit 17; in other words, the counting device 38 cooperates with the electronic control unit 17.

Advantageously, the counting device 38 comprises at least one sensor 36, in particular a position sensor.

The counting device 38 here comprises two sensors 36, only one of which is visible in fig. 3.

The number of sensors of the counting device is not limited, and the number of sensors may be different. In particular, the number of sensors may be equal to one, or greater than or equal to three.

In one embodiment, the counting device 38 is magnetic, e.g., an encoder equipped with one or more hall effect sensors.

Here, the counting device 38 is able to determine the number of turns performed by the rotor of the motor 11 starting from the reference position.

As a variant, the counting device 38 can determine the angular position of the driving wheel 13.

The type of the counting device is not limited, and the counting device may be of a different type. In particular, the counting device may be optical (for example, an encoder equipped with one or more optical sensors), or time-based (for example, a clock of a microcontroller).

The counting device 38 can also detect that the motorized drive 10 reaches one of the end-of-travel positions with respect to the rod 4.

As a variant, motorized drive 10 may include a first counting device 38 having one or more sensors 36 and a second time counting device (not shown) implemented by, for example, a clock of microcontroller 18.

Thus, first counting device 38 may determine that one of the end-of-travel positions is reached, and second counting device may determine an intermediate position between the two end-of-travel positions to minimize the electrical power consumption of motorized drive arrangement 10 and increase the run time of electrical power source 12.

Advantageously, the motorized drive means 10, in particular the electronic control unit 17, are configured to electrically activate the motor 11 after detecting a manually performed movement of the barrier 2, in particular a movement performed by a user.

In this way, the movement of the barrier 2 is initially carried out manually and then automatically by the motorized drive 10.

In this way, the movement of the barrier 2 is initiated manually and then continued automatically by the motorized drive arrangement 10.

The detection of the manual movement of the barrier 2 is here performed by the electronic control unit 17, in particular based on information provided by the counting device 38.

Advantageously, the electronic control unit 17 is configured to determine the direction of manual movement of the barrier 2, so as to control the motor 11 according to the determined direction of movement.

The detection of the manual direction of movement of the barrier 2 is here performed by the electronic control unit 17, in particular based on information provided by the counting device 38.

Here, the electronic control unit 17 comprises a single electronic board 26 equipped with a first communication module 19. The electronic board 26 is configured to control the motor 11 and to receive control commands and send messages if necessary.

As a variant (not shown), the electronic control unit 17 comprises a first electronic board 26 and a second electronic board. The first electronic board 26 is configured to control the motor 11. The second electronic board is provided with a first communication module 19 and is configured to receive control commands and to send messages if necessary.

Advantageously, as shown in fig. 4, the electronic control unit 17 comprises measuring means 73 for measuring the intensity value I of the current passing through the motor 11.

In this way, during the electrical activation of the motor 11, the measuring device 73 can learn the end-of-travel positions (closed or open) of the barrier 2 and detect the arrival of one of these end-of-travel positions.

In the case where the electronic control unit 17 comprises the measuring device 73, the motorized drive apparatus 10 may be provided without the counting device 38.

As shown in fig. 3 to 6, the transmission 28 includes a decelerator 29.

The speed reducer 29 comprises a worm gear system 30 and a gear system 31.

Here, the speed reducer 29 includes two speed reduction stages. The first reduction stage of the reduction gear 29 is constituted by a worm gear system 30. The second reduction stage of the reduction gear 29 is constituted by a gear system 31.

The worm gear system 30 includes a worm wheel 30a and a worm 30b. Further, the worm wheel 30a is engaged with the worm 30b.

The gear system 31 includes a pivot arm 35, an input gear 32, a planetary gear 33, and an output gear 34. The pivot arm 35 is coupled to the input gear 32. The worm wheel 30a of the worm gear system 30 rotates integrally with the input gear 32, more specifically, the worm wheel 30a and the input gear 32 have the same rotation axis X32. The planet gears 33 are mounted on a pivot arm 35. The planetary gear 33 is configured to mesh with the output gear 34 according to the angular direction of the pivot arm 35 relative to the input gear 32; in other words, the planet gears 33 mesh with the output gear 34 according to the angular orientation of the pivot arm 35 relative to the input gear 32. Further, an output gear 34 is fixed to the driving wheel 13.

Here, the speed reducer 29 is either in a disengaged state (i.e., the planetary gear 33 is disengaged with respect to the output gear 34), in a first engaged state (i.e., the planetary gear 33 is engaged with the output gear 34 at a first position of the pivot arm 35 with respect to the output gear 34, and in particular with respect to the drive wheel 13), or in a second engaged state (i.e., the planetary gear 33 is engaged with the output gear 34 at a second position of the pivot arm 35 with respect to the output gear 34, and in particular with respect to the drive wheel 13). The first engagement state and the second engagement state depend on the direction of rotation of the motor 11 and therefore on the direction of movement of the motorized drive arrangement 10 relative to the rod 4 in the direction of movement D.

Advantageously, the worm gear system 30 has a first reduction ratio. The gear system 31 has a second reduction ratio. Further, the first reduction ratio is greater than the second reduction ratio.

Advantageously, the first reduction ratio is greater than or equal to 10.

As a non-limiting example, the first reduction ratio is generally 40.

Advantageously, the second reduction ratio is strictly less than 10, and preferably 1.

Advantageously, when the electronic control unit 17 executes the motor 11 stop command, the motor 11 is driven in a rotation direction opposite to the initial rotation control direction of the motor 11, so as to disengage the reducer 29, in particular the second reduction stage.

Here, the disengagement of the reduction gear 29 is achieved by the rearward return movement of the pivot arm 35 to disengage the planetary gear 33 relative to the output gear 34.

In this way, motorized drive 10 (in particular barrier 2) can be moved manually with respect to rod 4 after release of reducer 29 (in particular the second reduction stage of reducer 29).

Advantageously, the electronic control unit 17, in particular the microcontroller 18, is configured to determine whether a disengagement of the reduction gear 29, in particular of the second reduction stage of the reduction gear 29, has occurred, in particular by means of a counting device 38 configured to determine the angular position of the driving wheel 13 or by means of a position detection sensor (not shown) of the pivot arm 35. This determination is performed in particular by one or more signals sent by the counting device 38 or by the position detection sensor to the electronic control unit 17.

The disengagement of the decelerator 29 (in particular the second deceleration stage of the decelerator 29) as a result of the motor 11 stop command may thus allow automatic activation of the motor 11 after detection (in particular by means of the counting device 38) of the manual movement of the barrier 2, thereby moving the barrier 2 with respect to the rod 4.

Disengagement of the decelerator 29 (particularly the second deceleration stage) with the motor 11 stop command may also allow manual closing or opening of the barrier 2 in the absence of electricity from the power source 12 (i.e. the amount of electricity is below a threshold).

Advantageously, the housing 43 comprises at least one wall 9 (i.e. an upper wall).

Here, the wall 9 is an integral part of the housing 43 and, more specifically, is divided into two parts, a first half-shell 43a and a second half-shell 43b, respectively. The wall 9 then forms the upper side 43d of the housing 43.

As a variant (not shown), the wall 9 is fixed to the housing 43 at the upper side 43d of the housing 43 by at least one fixing element; in other words, the wall 9 is configured to be fixed to the housing 43 at the upper side 43d of the housing 43 by at least one fixing element, in particular in the combined structure of the motorized drive arrangement 10.

Advantageously, the wall 9 is arranged between the housing 43 and the rod 4; in other words, the wall 9 is configured to be arranged between the housing 43 and the rod 4, in particular in a state in which the motorized drive arrangement 10 is mounted on the rod 4.

Advantageously, the wall 9 is parallel to the rod 4, in particular in the combined structure of the screening means 3.

Advantageously, the upper surface 9c of the wall 9 is opposite to the lower surface 9d of the wall 9. The lower surface 9d of the wall 9 is arranged facing the internal volume V43 of the housing 43, the internal volume V43 being provided in particular with the drive module 49 and the electronic control unit 17, in particular in the combined structure of the motorized drive arrangement 10. Advantageously, the upper surface 9c of the wall 9 is arranged facing the rod 4, in particular in the combined structure of the masking device 3.

Advantageously, the driving wheel 13 is arranged through the central opening 51 of the wall 9; in other words, the drive wheel 13 passes through the central opening 51 of the wall 9, in particular in the combined construction of the motorized drive arrangement 10.

The central opening 51 is here realized, without limitation, by leaving a combination of two cuts 51a, 51b on the edge of each of the first half-shell 43a and the second half-shell 43 b.

Advantageously, the motorized drive apparatus 10 further comprises at least one first retaining means 37. The first retaining means 37 is coupled to the housing 43; in other words, the first retaining means 37 are configured to be coupled with the housing 43, in particular in the combined structure of the motorized drive apparatus 10, in order to retain the housing 43 on the rod 4, in other words to suspend the housing 43 on the rod 4, in particular in the combined structure of the screening device 3.

Advantageously, motorized drive apparatus 10 further comprises at least one second retaining means 39. The second holding means 39 is coupled with the housing 43; in other words, the second holding means 39 are configured to be coupled with the housing 43, in particular in the combined structure of the motorized drive apparatus 10, in order to hold the housing 43 on the rod 4, in other words to suspend the housing 43 on the rod 4, in particular in the combined structure of the screening device 3.

Advantageously, the first retaining means 37 and the second retaining means 39 are configured to be arranged along the direction of movement D of the motorized drive 10 along the rod 4 on both sides of the first rotation axis X13 of the drive wheel 13; in other words, the first holding means 37 and the second holding means 39 are arranged along the direction of movement D of the motorized drive 10 along the rod 4 on both sides of the first rotation axis X13 of the drive wheel 13, in particular in the combined construction of the motorized drive 10.

Advantageously, the first retaining means 37 and the second retaining means 39 are configured symmetrically arranged with respect to the median plane P of the motorized drive apparatus 10 (more specifically with respect to the wall 9). The intermediate plane P is shown in fig. 1. The median plane P is perpendicular to the longitudinal axis A4 and preferably comprises a first rotation axis X13.

Advantageously, the first holding means 37 and the second holding means 39 are identical.

Accordingly, what is described below with respect to the first holding means 37 applies to the second holding means 39. Each element constituting the first holding means 37 is repeated for the second holding means 39, and "second" may be included in its name instead of "first" and may be denoted by the same reference numerals.

Advantageously, the first retaining means 37 comprise at least one first suspension element 7. The first suspension element 7 is configured to be in an unlocked state or a locked state with respect to the housing 43.

Advantageously, the housing 43 comprises at least one first recess 8. The first recess 8 is configured to receive a first portion of the first suspension element 7; in other words, the first recess 8 accommodates a first portion of the first suspension element 7, in particular in the combined structure of the motorized drive arrangement 10.

Here, without limitation, the first recess 8 is realized by a cutout left in each of the first half-shell 43a and the second half-shell 43 b.

In the example of the figures, the first recess 8 comprises a first opening and a second opening. The first recess 8 opens at the same time into the upper surface 9c of the wall 9 in the form of a hole forming a first opening, in particular a circular hole, and into the peripheral contour 43c in the form of a cutout forming a second opening.

As shown in fig. 3, the first suspension element 7 is rotationally movable (mobile on rotation) about the rotational axis X7 within the first recess 8 as long as the first suspension element 7 is in an unlocked state relative to the housing 43; in other words, the first suspension element 7 is configured to be rotationally movable about the rotation axis X within the first recess 8, in particular in the combined structure of the motorized drive arrangement 10.

Advantageously, the first holding means 37 further comprise at least one first operating element 46. The first actuating element 46 can also be referred to as a lever. Furthermore, the first maneuvering element 46 is configured to drive the first suspension element 7 in rotation about the rotation axis X7 between an unlocked state and a locked state; in other words, the first operating element 46 drives the first suspension element 7 in rotation about the rotation axis X7 between the unlocked state and the locked state, and vice versa.

In this case, in the unlocked state of the first suspension element 7 relative to the housing 43, the first suspension element 7 and the first actuating element 46 are rotationally fixed about the rotational axis X7 (solidaries en rotation) in the following manner: the first part of the first suspension element 7 is engaged in the first recess 8 through a first opening of the first recess 8 and the handling element 46 is engaged in the same first recess 8 through a second opening of the first recess 8.

Advantageously, the handling element 46 comprises a recess 46a with a non-circular cross section for receiving the first portion 7a of the first suspension element 7 with a non-circular cross section. This causes the first suspension element 7 and the operating element 46 to rotate integrally about the rotation axis X7.

Advantageously, in the unlocked state, the first suspension element 7 is removable with respect to the first recess 8 of the housing 43.

Thus, in the unlocked state, the first suspension element 7 can be extracted from the first recess 8 of the housing 43 by a movement in the direction of the rotation axis X7.

Advantageously, the first suspension element 7 comprises at least one first rod 58 and a first slider 59. The first recess 8 of the housing 43 is configured to receive a first rod 58 of the first suspension element 7; in other words, the first recess 8 of the housing 43 accommodates the first rod 58 of the first suspension element 7, in particular in the combined construction of the motorized drive arrangement 10. Furthermore, the first slider 59 is configured to be in contact with the second surface 6 of the lever 4; in other words, the first slider 59 is in contact with the second surface 6 of the rod 4, in particular in the combined structure of the masking device 3, in order to keep the housing 43 on the rod 4.

In this way, the first slider 59 allows the motorized drive device 10 to move along the rod 4 by sliding on the second surface 6 of the rod 4.

Here, the first portion 7a of the first suspension element 7 is part of the first rod 58.

Advantageously, the first slider 59 is configured to be arranged outside the housing 43; in other words, the first slider 59 is arranged outside the housing 43, in particular in the combined construction of the motorized drive arrangement 10.

Here, in the combined structure of the masking device 3, and more specifically in the state in which the motorized drive device 10 is mounted on the rod 4, the drive wheel 13 rests on a first side of the rod 4 having the first surface 5, and the first slider 59 rests on a second side of the rod 4 having the second surface 6. The second side of the rod 4 is opposite to the first side of the rod 4.

Advantageously, motorized drive apparatus 10 further includes at least one resilient return element 44. The or each resilient return element 44 is configured to bear the drive wheel 13 against the rod 4; in other words, the or each elastic return element 44 abuts the driving wheel 13 against the rod 4, in particular in the combined construction of the masking device 3.

Here, as shown in fig. 3, 4 and 6, the motorized drive apparatus 10 includes two resilient return elements 44. Furthermore, each elastic return element 44 is a spring, in particular a compression spring, and is helical.

The number and shape of the elastic return elements are not limited, and may be different. The number of elastic return elements may be one, three or more. Further, the or each resilient return element may be an extension spring, may be a pin, or may be a leaf spring.

Advantageously, as shown in fig. 1, when the housing 43 is suspended on the rod 4, the driving wheel 13 is movable within the housing 43, in particular according to a translational movement M (in particular in a vertical direction), so as to rest against the rod 4 by means of an elastically resilient element 44, in particular in the combined structure of the screening device 3.

Advantageously, the drive module 49 further comprises a cover 50. Furthermore, the motor 11 and the transmission 28 are configured to be housed within the housing 50 of the drive module 49; in other words, the electric motor 11 and the transmission 28 are housed inside the housing 50 of the drive module 49, in particular in the combined structure of the drive module 49.

Here, the cover 50 includes a first half shell 50a and a second half shell 50b. Further, as shown in fig. 6, the first half-shell 50a and the second half-shell 50b are configured to be assembled together by the fixing member 74; in other words, the first half-shell 50a and the second half-shell 50b are assembled together by the fixing element 74, in particular in the combined structure of the drive module 49.

The fastening elements 74 of the first half-shell 50a and of the second half-shell 50b of the cover 50 are screw fastening elements, in particular three in number. Each of the fixing members 74 passes through a through hole 76 provided on one of the first half shell 50a and the second half shell 50 b; in other words, each of the fixing elements 74 is configured to pass through a through hole 76 (in this case, the first half shell 50 a) provided in one of the first half shell 50a and the second half shell 50 b. And each fixing member 74 is screwed into a fixing hole 77 provided on the other of the first half shell 50a and the second half shell 50 b; in other words, each fixing element 74 is arranged to be screwed into a fixing hole 77 provided on the other of the first half-shell 50a and the second half-shell 50b (in this case the second half-shell 50 b), in particular in the assembled configuration of the drive module 49. Only two of the through holes 76 are shown in fig. 6.

There is no limitation on the types and the number of the fixing elements of the first and second half-shells, and the types and the number of the fixing elements may be different. For example, the fixation elements may be resilient snap fixation elements, e.g. the number may be two, four or more.

Advantageously, said driving wheel 13 is configured to be partially housed inside the housing 50 of the driving module 49, in other words, said driving wheel 13 is partially housed inside the housing 50 of the driving module 49; also, the drive wheel 13 is arranged partly outside the housing 50 of the drive module 49, in other words the drive wheel 13 is arranged partly outside the housing 50 of the drive module 49, in particular in the combined structure of the motorized drive arrangement 10, more particularly in the combined structure of the drive module 49.

Advantageously, the or each elastic return element 44 is configured to cooperate with the housing 43 on the one hand and with the cover 50 on the other hand; in other words, the or each elastic return element 44 cooperates with the housing 43 on the one hand and with the cover 50 on the other hand, in particular in the combined construction of the motorized drive apparatus 10. Furthermore, the driving wheel 13 is configured to rest against the first surface 5 of the rod 4 by means of one or more elastic return elements 44; in other words, the driving wheel 13 is abutted against the first surface 5 of the rod 4 by means of one or more elastic return elements 44, in particular in the state in which the motorized drive arrangement 10 is mounted on the rod 4.

In this way, the drive module 49 can move within the housing 43 under the action of the elastic return element 44, in particular according to a translational movement M, so that the drive wheel 13 rests against the first surface 5 of the rod 4, in particular in the combined configuration of the screening device 3. This corresponds to the translational movement M described above.

The elastic return element 44 is configured to cooperate here on the one hand with a first bearing wall 52 arranged in the housing 43 of the motorized drive arrangement 10 and on the other hand with the cover 50 of the drive module 49; in other words, the elastic return element 44 cooperates on the one hand with a first supporting wall 52 arranged in the housing 43 of the motorized drive arrangement 10 and on the other hand with the cover 50 of the drive module 49.

Advantageously, the first supporting wall 52 is parallel to the rod 4, in particular in the combined structure of the screening means 3.

Here, without limitation, the first support wall 52 is realized by a member provided in each of the first half shell 43a and the second half shell 43b of the housing 43.

In the combined construction of the screening device 3, the elastic return element 44 can close and open the screen 2 by adjusting the pressure exerted by the driving wheel 13 on the rod 4, taking into account the variation in the mass of the screen 2 pulled or pushed by the motorized drive device 10, during the movement of the motorized drive device 10 along the rod 4 by the electrical activation of the motor 11.

Advantageously, when the motor 11 is electrically activated, the cover 50 is configured to tilt within the housing 43 with respect to the median plane P of the housing 43; in other words, when the motor 11 is electrically activated, the cover 50 is tilted within the housing 43 with respect to the middle plane P of the housing 43.

In the combined construction of the screening device 3, when the motor 11 is electrically activated, the driving wheel 13 is brought into abutment against the rod 4 by means of the elastic return element 44 which is brought into abutment against the first supporting wall 52 located in the housing 43 and is rotated about the first rotation axis X13 by the driving of the motor 11 (possibly also by means of the transmission 28).

In this way, pressure is exerted on the resilient return element 44 to move the drive module 49 within the housing 43. The movement of the drive module 49 within the housing 43 is dependent on the direction of rotation of the motor 11 and thus the direction of rotation of the drive wheel 13.

In this way, the drive module 49 is in an inclined position within the housing 43, and more specifically, the drive module 49 is in an inclined position relative to the rod 4.

Thus, a camber is created in the motorized drive 10, such that the force exerted by the drive wheel 13 on the rod 4 increases, thereby moving the motorized drive 10 along the rod 4.

Advantageously, when the electric motor 11 is electrically deactivated, the drive module 49 may be in a position such that the median plane of the drive module 49 is parallel to the median plane P of the housing 43, in fact the median plane of the drive module 49 overlaps with the median plane P.

As a variant (not shown), when the motor 11 is electrically deactivated, the drive module 49 may remain in a position inclined with respect to the median plane P of the housing 43, in particular due to the force of the drive wheel 13 on the first surface 5 of the rod 4, in particular in the combined construction of the screening device 3, and after the motorized drive 10 has moved along the rod 4.

In the combined construction of the screening device 3, the driving wheel 13 rests on the rod 4 when the motor 11 is electrically deactivated, by means of the elastic return element 44 resting against the housing 43 and more specifically against the first supporting wall 52.

In this way, a force is exerted on the elastic return element 44 in a balanced manner. This force is transmitted to the housing 43, to the wall 9, then to the first and second holding means 37, 39, and then to the rod 4 by the first and second holding means 37, 39.

In this way, the drive module 49 may be in a vertical position within the housing 43, and more specifically, assuming the rod 4 is horizontal, the drive module 49 is in a vertical position relative to the rod 4.

Advantageously, the housing 43 is configured to maintain a predetermined orientation with respect to the rod 4 by the first and second retaining means 37, 39; in other words, the housing 43 is kept in a predetermined orientation relative to the rod 4 by the first and second holding means 37, 39, in particular unchanged over time, in particular in the combined structure of the masking device 3.

In this way, this predetermined orientation of the housing 43 with respect to the rod 4 is achieved by the first and second retaining means 37 and 39 cooperating with the rod 4 to retain the motorized drive arrangement 10 on the rod 4, both during the electrical deactivation of the motor 11 and during the electrical activation of the motor 11.

In this way, the value of the angle (not shown) between the median plane P of the housing 43 and the longitudinal axis A4 of the rod 4 remains constant, both when the motorized drive 10 is stopped with respect to the rod 4, and when the motorized drive 10 is moved along the rod 4 by the electrical activation of the motor 11.

Preferably, the value of the angle between the median plane P of the housing 43 and the longitudinal axis A4 of the rod 4 is substantially 90 °.

This configuration of motorized drive apparatus 10 enables the stiffness value of the or each elastic return element 44 to be minimized.

Since the motorized drive arrangement 10 is held in position relative to the lever 4 by the first and second holding means 37, 39, the stiffness value of the elastic return element 44 determines the initial contact pressure of the drive wheel 13 on the lever 4 when the electric motor 11 is electrically deactivated.

The transmission 28 of the motorized drive arrangement 10 shown in fig. 1 to 6 is described in more detail herein with reference to fig. 5 to 9.

The pivot arm 35 includes a first bore 42 and two retaining lugs 54.

Advantageously, the holding lugs 54 form a pincer shape.

The two retention tabs 54 may also be referred to herein as a first retention tab and a second retention tab.

Advantageously, as shown in fig. 7, the two holding lugs 54 are spaced apart from each other; in other words, the two holding lugs 54 are separated by a groove 79 provided in the pivot arm 35.

The planetary gear includes a first rotation shaft 55. The first rotation shaft 55 includes a first end 55a and a second end 55b. The second end 55b is opposite the first end 55 a.

Here, as shown in fig. 8, the first rotation shaft 55 is a component of the planetary gear 33; in other words, the first rotation shaft 55 and the planetary gear 33 are formed as only one member.

As a modification (not shown), the first rotation shaft 55 is separated from the planetary gear 33; in other words, the first rotation shaft 55 and the planetary gear 33 form two different components assembled together.

The first end 55a of the first rotation shaft 55 is placed in the first bore 42 of the pivot arm 35 and the second end 55b of the first rotation shaft 55 is placed in the volume V54 formed between the two holding lugs 54 in order to hold the planetary gear 33 on the pivot arm 35.

This assembly of the gear system, and more particularly of the planetary gear 33 on the pivot arm 35, therefore makes it possible to ensure the separation of the transmission 28 from the driving wheel 13, while reducing the operating noise of the transmission 28 and the acquisition costs of the motorized drive 10.

Furthermore, the two holding lugs 54 of the pivot arm 35 each form a bearing 54a. Each of the supporting portions 54a is configured to contact the second end 55b of the first rotation shaft 55 of the planetary gear 33; in other words, each support 54a is in contact with the second end 55b of the first rotation shaft 55 of the planetary gear 33, in particular in the combined structure of the gear system 31.

In this way, the abutment of the two holding lugs 54 of the pivot arm 35 (in particular of the bearing parts 54a thereof) against the second end 55b of the first rotation shaft 55 of the planetary gear 33 ensures a friction force between the pivot arm 35 and the planetary gear 33 without requiring additional components.

Advantageously, the friction between the pivot arm 35 and the planetary gear 33 is generated by friction of the cylindrical surface of the first rotation shaft 55 of the planetary gear 33 with the concave surface of each holding lug 54 of the pivot arm 35, in particular of the support 54a thereof.

In this way, friction between the pivot arm 35 and the planetary gear 33 is generated in the radial direction of the rotation axis 33X of the planetary gear 33.

Alternatively or additionally, friction between the pivot arm 35 and the planet gears 33 is created by friction of the flat surface 78 of the planet gears 33 with a flat surface (not shown) of each of the retaining lugs 54 of the pivot arm 35.

In this case, a friction force between the pivot arm 35 and the planetary gear 33 is generated in the axial direction of the rotation axis X33 of the planetary gear 33.

Here, friction is only generated between the second end 55b of the first rotation shaft 55 of the planetary gear 33 and the holding lug 54 of the pivot arm 35.

Therefore, in this case, there is an operating gap between the first end 55a of the first rotary shaft 55 of the planetary gear 33 and the first bore 42 of the pivot arm 35.

As a variant (not shown), on the one hand, friction is generated between the second end 55b of the first rotation shaft 55 of the planetary gear 33 and the holding lug 54 of the pivot arm 35; on the other hand, friction is generated between the first end 55a of the first rotation shaft 55 of the planetary gear 33 and the first bore 42 of the pivot arm 35. In this case, the first bore 42 is obtained by two holding lugs similar to the holding lugs 54, which are spaced apart from each other and are separated by a groove similar to the groove 79 of the pivot arm 35.

Advantageously, the pivot arm 35 is made of a plastic material, which may be, for example, polyoxymethylene (POM), polycaprolactame (PA 6), polyhexamethylene diamine (Polyhexamethylene hexanediamide, PA 6.6).

Advantageously, the cover 50 comprises at least one stop 14, as shown in fig. 9. Furthermore, when the planetary gear 33 is engaged with the output gear 34, each of the retaining lugs 54 of the pivot arm 35 is configured to abut against the limiter 14 of the cover 50; in other words, each of the retaining lugs 54 of the pivot arm 35 abuts the stop 14 of the cover 50.

Thus, when the planetary gear 33 is meshed with the output gear 34, in either the first or second engaged state of the reduction gear 29, the pivot arm 35 is angularly positioned relative to the cover 50 about the rotation axis X35 by the limiter 14 of the cover 50.

Here, the rotation axis X35 coincides with the rotation axis X32.

In this way, when the planet gears 33 are engaged with the output gears 34, the angular positioning of the pivot arm 35 relative to the cover 50 by the stop 14 of the cover 50 prevents play-free operation of the gear system 31 and, more specifically, between the planet gears 33 and the output gears 34 on the one hand and between the input gears 32 and the planet gears 33 on the other hand. Thus, this angular positioning of the pivot arm 35 relative to the cover 50 allows avoiding a loss of transmission efficiency.

Here, and as shown in fig. 9, the stopper 14 is provided in the first half shell 50a of the cover 50.

Advantageously, the cover 50 comprises a single stop 14.

Advantageously, the stop 14 comprises a first contact surface 14a and a second contact surface 14b. When the planetary gear 33 and the output gear 34 are engaged in the first engagement state of the speed reducer 29, one of the holding lugs 54 of the pivot arm 35 (i.e., the first holding lug) is in contact with the first contact surface 14a of the stopper 14. Further, when the planetary gear 33 and the output gear 34 are meshed in the second engaged state of the speed reducer 29, the other one of the holding lugs 54 of the pivot arm 35 (i.e., the second holding lug) is in contact with the second contact surface 14b of the stopper 14.

Thus, the single stop 14 maximizes the angular offset of the pivot arm 35 relative to the shroud 50 about the rotational axis X35 between the first engaged state of the speed reducer 29 and the second engaged state of the speed reducer 29.

In this way, the movement time of the pivot arm 35 with respect to the cover 50 about the rotation axis X35 is minimized between the first engagement state of the speed reducer 29 and the second engagement state of the speed reducer 29, thereby making the disengagement state of the speed reducer 29 reliable; that is, the disengaged state of the planetary gear 33 with respect to the output gear 34 is ensured.

Furthermore, when the pivot arm 35 (and in particular one of the retaining lugs 54 of the pivot arm 35) abuts against the stop 14 of the cover 50, the pincer formed by the two retaining lugs 54 of the pivot arm 35 is not stressed.

In this way, when the pivot arm 35 (in particular one of the holding lugs 54 of the pivot arm 35) abuts against the stop 14 of the cover 50, the value of the friction between the pivot arm 35 and the planetary gear 33 is unchanged.

As a variant (not shown), the cover 50 comprises two limiting members. In this case, each stopper includes one of the first contact surface 14a and the second contact surface 14 b.

Advantageously, the pivot arm 35 includes a first slot 56a and a second slot 56b, as shown in fig. 7. The first slot 56a is coupled with the first bore 42 of the pivot arm 35. Further, the second slot 56b is coupled to a volume V54 formed between the two holding lugs 54 of the pivot arm 35.

Thus, the first and second slots 56a, 56b of the pivot arm 35 allow the first and second ends 55a, 55b of the first rotational shaft 55 of the planetary gear 33 to be inserted into the first bore 42 and the volume V54, respectively, in a radial direction relative to the rotational axis X35.

Advantageously, the pivot arm 35 further comprises a second bore 57. The cover 50 also includes a raised portion 60, as shown in fig. 9. In addition, the raised portion 60 of the cover 50 is disposed within the second bore 57 of the pivot arm 35; in other words, the raised portion 60 of the cover 50 is configured to be disposed within the second bore 57 of the pivot arm 35, particularly in the combined configuration of the drive module 49.

Thus, the pivot arm 35 is free to rotate relative to the cover 50 about the rotational axis X35 by the second bore 57 of the pivot arm 35 and the raised portion 60 of the cover 50. The rotation axis X35 may also be referred to as a second rotation axis.

Furthermore, when the pivot arm 35 (in particular one of the holding lugs 54 of the pivot arm 35) abuts against the stop 14 of the cover 50, the guiding of the pivot arm 35 relative to the cover 50 is not stressed (n' est pas satellite) by the second bore 57 of the pivot arm 35 and the raised portion 60 of the cover 50.

In this way, when the pivot arm 35 (and in particular one of the retaining lugs 54 of the pivot arm 35) abuts against the stop 14 of the cap 50, the conductive force is absorbed by the stop 14 of the cap 50 and the pivot arm 35.

Here, and as shown in fig. 9, the convex portion 60 is provided in the first half shell 50a of the cover 50.

Advantageously, when the planetary gear 33 is engaged with the output gear 34, i.e. when the reducer 29 is in the first engagement state or in the second engagement state, by the second bore 57 of the pivot arm 35 and the raised portion 60 of the cover 50, a loss of transmission efficiency is avoided due to the guiding of the pivot arm 35 with respect to the cover 50.

Advantageously, the pivot arm 35 includes a first end 35a and a second end 35b, as shown in fig. 7. The second end 35b is opposite the first end 35 a.

Advantageously, the volume V54 formed by the two holding lugs 54 is provided at the first end 35a of the pivot arm 35. Further, a second bore 57 is provided at the second end 35b of the pivot arm 35.

Advantageously, the worm wheel 30a of the worm gear system 30 and the input gear 32 form a first assembly 61, in particular rotating about the rotation axis X32, as shown in fig. 5 and 6. Furthermore, the first assembly 61 is made of a single piece.

Advantageously, the first component 61 is made of plastic material, in particular by injection moulding of plastic material.

Advantageously, the driving wheel 13 comprises a rim 62 and a tread 63. Furthermore, the rim 62 of the drive wheel 13 and the output gear 34 form a second assembly 64, in particular rotating about the first rotation axis X13, as shown in fig. 5 and 6. Further, the second assembly 64 is made of a single piece.

Advantageously, the second component 64 is made of plastic material, in particular by injection moulding of plastic material. In addition, the tread 63 is overmolded or assembled onto the rim 62 of the drive wheel 13.

Advantageously, the first assembly 61 comprises a second rotation axis 67. The second rotation shaft 67 includes a first end 67a and a second end 67b. The second end 67b is opposite the first end 67 a. Further, each of the first end 67a and the second end 67b of the second rotational shaft 67 remains in position in the first bore 68 of the cover 50; in other words, each of the first end 67a and the second end 67b of the second rotation shaft 67 is configured to remain in position in the first bore 68 of the cover 50, in particular in the first bore 68 of one or other of the first half-shell 50a and the second half-shell 50b of the cover 50, in particular in the combined structure of the drive module 49.

Thus, the cover 50 comprises two first bores 68 for accommodating the first end 67a and the second end 67b of the second rotation shaft 67.

Advantageously, the second assembly 64 comprises a third rotation shaft 69. The third rotation shaft 69 includes a first end 69a and a second end 69b. The second end 69b is opposite the first end 69 a. Further, each of the first end 69a and the second end 69b of the third rotary shaft 69 remains in position in the second bore 70 of the cover 50; in other words, each of the first end 67a and the second end 67b of the second rotation shaft 67 is configured to remain in position in the second bore 70 of the cover 50, in particular in the second bore 70 of one or the other of the first half-shell 50a and the second half-shell 50b of the cover 50, in particular in the combined structure of the drive module 49.

Thus, the cover 50 comprises two second bores 70 for receiving the first end 69a and the second end 69b of the third rotary shaft 69.

Advantageously, the second rotation axis 67 and the third rotation axis 69 are identical.

Here, each of the first and second ends 67a and 67b of the second rotation shaft 67, and the first and second ends 69a and 69b of the third rotation shaft 69 is mounted in one of the first and second bores 68 and 70 in one or the other of the first and second half-shells 50a and 50b of the cover 50 by a force-fitting (emmanchement en force) to ensure rotational locking of the second and third rotation shafts 67 and 69 relative to the cover 50.

As a modification (not shown) or as a complement, each of the first and second ends 67a and 67b of the second rotation shaft 67, and the first and second ends 69a and 69b of the third rotation shaft 69 includes one or more flat portions. The or each flat cooperates with a linear edge of one of the first and second bores 68, 70 in one or the other of the first and second half shells 50a, 50b of the cover 50; in other words, the or each flat is configured to mate with a straight edge of one of the first and second bores 68, 70 in one or the other of the first and second half shells 50a, 50b of the cover 50.

Advantageously, the drive module 49 further comprises a baffle 71. The baffle 71 is arranged between the worm wheel 30a of the worm wheel and worm system 30 and the driving wheel 13, in particular in the combined construction of the driving module 49.

Thus, the shutter 71 allows to avoid contamination of the tread 63 of the driving wheel 13 with grease from the worm gear system 30 and the gear system 31.

Advantageously, the baffle 71 is formed in the cover 50.

Here, the baffle 71 is formed by two walls 72 formed on one of the first half-shell 50a and the second half-shell 50b of the cover 50, in this case the second half-shell 50b as shown in fig. 5 and 6. Further, two walls 72 of the shutter 71 are provided on both sides of the second rotation shaft 67 and the third rotation shaft 69.

As a variant (not shown), the baffle 71 is formed by a single wall 72 formed on one of the first half-shell 50a and the second half-shell 50b of the cover 50, in this case the second half-shell 50b. Further, the walls 72 of the shutter 71 are located on both sides of the second rotation shaft 67 and the third rotation shaft 69.

According to the invention, such an assembly of the gear system, more particularly of the planetary gear on the pivot arm, ensures a separation of the transmission from the drive wheel, while reducing the operating noise of the transmission and the acquisition costs of the motorized drive.

Various modifications may be made to the above-described embodiments without departing from the scope of the invention as defined in the claims.

As a variant (not shown), the motorized drive apparatus 10 comprises only one holding device 37, 39.

As a variant (not shown), in the case of a rail of the rod 4, in particular a rail having an "H" shaped cross section, the first retaining means 37 and the second retaining means 39 each comprise at least one hook, in particular in the form of a pin. The hooks are configured to hook over the loops 48 of the fastening elements 53 of the masking device 3; in other words, the hooks catch on the loops 48 of the fastening elements 53 of the screening device 3 in order to hold the housing 43 on the rod 4.

In a further variant (not shown), the hooks of both the first holding means 37 and the second holding means 39 are only single parts, for example can be "U" -shaped hooks. Thus, each of the hooks is formed by a branch of a single component. In this case, each branch of the single component constituting one of the hooks is configured to catch the ring 48 of the fastening element 53 of the masking device 3; in other words, each branch of the single component constituting one of the hooks the ring 4 of the fastening element 53 of the screening device 3, so as to keep the housing 43 suspended on the rod 4.

As a variant (not shown), the rod 4 may for example have a circular cross section truncated by a tangential plane, in particular at its lower side. In this case, the cut-out of the rod 4 comprises a groove 65 and forms a first rail 5a and a second rail 5b of the first surface 5, and a first rail 6a and a second rail 6b of the second surface 6.

As a variant (not shown), the first suspension element 7 of the first holding device 37 comprises at least a first rod 58 and a first driven wheel (not shown), i.e. a slide mount (motee folle), instead of the first slider 59. The first recess 8 of the housing 43 is configured to receive a first rod 58 of the first suspension element 7; in other words, the first recess 8 of the housing 43 accommodates the first rod 58 of the first suspension element 7, in particular in the combined construction of the motorized drive arrangement 10. Furthermore, the first driven wheel is configured to be freely rotatable about a rotation axis (not shown), in other words, the first driven wheel is freely rotatable about the rotation axis (not shown); and the first driven wheel is configured to be in contact with the second surface 6 of the rod 4, in other words the second surface 6 of the rod 4, in particular in the combined structure of the masking device 3, in order to keep the housing 43 on the rod 4. By "driven" is meant that the or each first driven wheel 14 rotates under the influence of the movement of the motorized drive arrangement 10 along the rod 4 and its adherence to the rod 4, in particular to the second surface 6. Thus, the one or more first driven wheels are thus driven in rotation by translational movement of the housing 43 in the direction of movement D. Thus, the or each first driven wheel allows the motorized drive 10 to move along the rod 4 by rolling on the second surface 6 of the rod 4. In one embodiment, the first retaining means 37 comprises two first driven wheels. The number of first driven wheels is not limited, and may be different. For example, the number of the first driven wheels may be one or more than or equal to three. Advantageously, the or each first driven wheel is configured to be arranged outside the housing 43; in other words, the or each first driven wheel is arranged outside the housing 43, in particular in the combined construction of the motorized drive arrangement 10. Here, in the combined structure of the masking device 3, and more specifically in the state in which the motorized drive device 10 is mounted on the rod 4, the drive wheel 13 abuts against a first side of the rod 4, and the or each first driven wheel abuts against a second side of the rod 4. Advantageously, the rotation axis of the or each first driven wheel is offset along the longitudinal axis A4 with respect to the first rotation axis X13 of the driving wheel 13 when the first suspension element 7 is in a position corresponding to the locked condition with respect to the housing 43. Advantageously, the rotation axis of the or each first driven wheel is orthogonal to the direction of movement D of the motorised drive 10 along the rod 4 when the first suspension element 7 is in a position corresponding to the locked condition with respect to the housing 43. Furthermore, when the first suspension element 7 is in a position corresponding to the unlocked state relative to the housing 43, the rotation axis of the or each first driven wheel is parallel to the direction of movement D of the motorized drive arrangement 10 along the rod 4. Advantageously, the rotation axis of the or each first driven wheel is parallel to the first rotation axis X13 of the driving wheel 13 when the first suspension element 7 is in a position corresponding to the locked condition with respect to the housing 43. Furthermore, the rotation axis of the one or more first driven wheels is orthogonal to the first rotation axis X13 of the driving wheel 13 when the first suspension element 7 is in a position corresponding to the unlocked state with respect to the housing 43. Advantageously, the driving wheel 13 comprises a tread 63. This tread can be referred to as a first tread. The or each first driven wheel comprises a second tread. Furthermore, the first tread of the driving wheel 13 and the second tread of the driven wheel are configured to be in contact with the first surface 5 and the second surface 6 of the rod 4, respectively; in other words, the first tread of the driving wheel 13 and the second tread of the driven wheel are in contact with the first surface 5 and the second surface 6 of the rod 4, respectively, in particular in the combined structure of the masking device 3. Advantageously, the drive wheel 13 is different from the or each first driven wheel. In particular, the outer diameter of the drive wheel 13 is greater than the outer diameter of the or each first driven wheel. Advantageously, the or each first driven wheel is assembled on the first lever 58, in particular on the first lever 58 by means of a shaft (not shown). In one embodiment, the shaft passes through a central opening (not shown) of the or each first driven wheel on the one hand and a hole (not shown) provided in the first rod 58 on the other hand. The type of assembly of the or each first driven wheel is not limited and may be different. For example, the assembly type may be implemented as a screw or elastic snap. Advantageously, the second retaining means 39 are identical to the first retaining means 37.

As a variant (not shown), the rod 4 may for example have a circular section, in particular a solid or hollow circular section. In this case, the rod 4 is commonly referred to as a round rod or bar. Furthermore, the rod 4 does not have a groove 65. In such a case, the or each first driven wheel of the first holding means 37, and the or each second driven wheel of the second holding means 39 are configured to rest against the first rolling surface of the rod 4; in other words, the or each first driven wheel of the first holding means 37 and the or each second driven wheel of the second holding means 39 rest against the first rolling surface of the rod 4. The driving wheel 13 is configured to rest against a second rolling surface of the rod 4; in other words, the driving wheel 13 abuts against the second rolling surface of the rod 4. Furthermore, the first rolling surface of the bar 4 is located on the upper side of the bar 4 and the second rolling surface of the bar 4 is located on the lower side of the bar 4.

As a variant (not shown), the barrier 2 does not have a suspension element 7, in particular when the rod 4 has a circular cross section, which may be truncated by a tangential plane. In this case, the barrier 2 comprises perforations. Furthermore, the rod 4 is inserted into an eyelet through the barrier 2, so that the barrier 2 hangs on the rod 4.

As a variant (not shown), the wall 9 also comprises at least one attachment element, and more particularly two attachment elements. Furthermore, the or each attachment element is configured to receive one of the hooks 75; in other words, the attachment element or the attachment element accommodates one of the hooks 75 in order to suspend the barrier 2 on the one hand on the rod 4 and more particularly on the fastening element 53 and, on the other hand, to drive the barrier 2 to move while the motorized drive 10 is moving relative to the rod 4 when the motorized drive 10 is electrically activated or when the motorized drive 10 is manually activated. The or each attachment element is embodied in the form of a hook.

As a variant (not shown), in the case where the screening device 3 comprises two barriers 2 and a single rod 4, the screening device 3 comprises two motorized drive means 10. In the combined structure of the masking device 3, the first motorized drive device 10 is configured to remain at the rod 4, in other words, the first motorized drive device 10 is configured to hang on the rod 4; and is configured to move along the rod 4 to close or open the first barrier 2. Furthermore, the second motorized drive arrangement 10 is configured to be held on the rod 4; in other words, the second motorized drive arrangement 10 is configured to be suspended from the rod 4 and to be moved along the rod 4 in order to close or open the second barrier 2.

Furthermore, the disclosed embodiments and variations may be combined to create new embodiments of the invention without departing from the scope of the invention as defined in the appended claims.

Claims

1. A motorized drive (10) of a masking device (3), the motorized drive (10) comprising at least a drive module (49);

the drive module (49) includes at least:

-an electric motor (11);

-a transmission (28), the transmission (28) being configured to be coupled to the motor (11); and

-a driving wheel (13), said driving wheel (13) being configured to be driven in rotation about a first rotation axis (X13) by said motor (11) and said transmission means (28) and in contact with a first surface (5) of a rod (4) of said masking device (3) to move said motorized driving device (10) along said rod (4) towards a movement direction (D);

the transmission (28) comprises a speed reducer (29);

the speed reducer (29) includes:

-a worm and gear system (30); and

-a gear system (31);

the worm gear system (30) comprises:

-a worm wheel (30 a); and

-a worm (30 b), the worm wheel (30 a) being in engagement with the worm (30 b);

the gear system (31) comprises:

-a pivot arm (35);

-an input gear (32), the worm wheel (30 a) of the worm gear system (30) rotating integrally with the input gear (32), the pivot arm (35) being coupled to the input gear (32);

-a planetary gear (33), the planetary gear (33) being mounted on the pivot arm (35); and

-an output gear (34), the planetary gear (33) being configured to mesh with the output gear (34) according to the angular direction of the pivot arm (35) relative to the input gear (32), the output gear (34) being fixed to the driving wheel (13);

it is characterized in that the method comprises the steps of,

the pivot arm (35) comprises at least:

-a first bore (42); and

-two holding lugs (54);

the planetary gear (33) comprises a first rotation shaft (55), the first rotation shaft (55) comprising a first end (55 a) and a second end (55 b), the second end (55 b) being opposite to the first end (55 a); and

a first end (55 a) of the first rotation shaft (55) is placed in the first bore (42) of the pivot arm (35), and a second end (55 b) of the first rotation shaft (55) is placed in a volume (V54) formed between the two holding lugs (54) in order to hold the planetary gear (33) on the pivot arm (35).

2. Motorized drive (10) for a masking device (3) according to claim 1, characterized in that,

the drive module (49) further comprises a cover (50);

the cover (50) comprises at least one stop (14);

When the planetary gear (33) is engaged with the output gear (34), each of the retaining lugs (54) of the pivot arm (35) is configured to abut against the limiter (14) of the cover (50).

3. Motorized drive (10) of a masking device (3) according to claim 1 or 2, characterized in that the worm wheel (30 a) of the worm gear system (30) and the input gear (32) form a first assembly (61), the first assembly (61) being made of a single piece.

4. A motorized drive arrangement (10) for a masking device (3) according to claims 2 and 3, characterized in that,

the first assembly (61) comprises a second rotation axis (67);

the second rotation shaft (67) includes a first end (67 a) and a second end (67 b), the second end (67 b) being opposite to the first end (67 a); and

each of the first end (67 a) and the second end (67 b) of the second rotation shaft (67) remains in position in a first hole (68) of the cover (50).

5. Motorized drive (10) for a masking device (3) according to claims 1 to 4, characterized in that,

the drive wheel (13) comprises:

-a rim (62); and

-a tread (63);

the rim (62) of the drive wheel (13) and the output gear (34) form a second assembly (64), the second assembly (64) being made of a single piece.

6. Motorized drive (10) for a masking device (3) according to claim 5, characterized in that,

the drive module (49) further comprises a cover (50);

the cover (50) comprises at least one stop (14);

when the planetary gear (33) is engaged with the output gear (34), each of the holding lugs (54) of the pivot arm (35) is configured to abut against the limiter (14) of the cover (50);

the second assembly (64) comprises a third rotation shaft (69);

the third rotation shaft (69) includes a first end (69 a) and a second end (69 b), the second end (69 b) being opposite the first end (69 a); and

each of the first end (69 a) and the second end (69 b) of the third rotation shaft (69) remains in position in the second hole (70) of the cover (50).

7. Motorized drive (10) for a masking device (3) according to claims 1 to 4, characterized in that,

the drive module (49) further comprises a baffle (71); and

the baffle (71) is provided between the worm wheel (30 a) of the worm wheel and worm system (30) and the drive wheel (13).

8. Motorized drive (10) for a masking device (3) according to claim 7, characterized in that,

the drive module (49) further comprises a cover (50);

The cover (50) comprises at least one stop (14);

when the planetary gear (33) is engaged with the output gear (34), each of the holding lugs (54) of the pivot arm (35) is arranged to abut against the limiter (14) of the cover (50); and

the baffle (71) is formed in the cover (50).

9. Motorized drive (10) for a masking device (3) according to claims 1 to 4, characterized in that,

the worm and gear system (30) has a first reduction ratio;

-said gear system (31) has a second reduction ratio; and

the first reduction ratio is greater than the second reduction ratio, which is strictly less than ten.

10. A masking device (3) comprising at least:

-a barrier (2);

-a rod (4); and

-a motorized drive arrangement (10) according to any one of claims 1 to 9, the barrier (2) being suspended on the rod (4) and being movable along the rod (4) by the motorized drive arrangement (10).