EP3717728A1 - Actionneur électromécanique et installation domotique comprenant un tel actionneur - Google Patents
Actionneur électromécanique et installation domotique comprenant un tel actionneurInfo
- Publication number
- EP3717728A1 EP3717728A1 EP18807044.5A EP18807044A EP3717728A1 EP 3717728 A1 EP3717728 A1 EP 3717728A1 EP 18807044 A EP18807044 A EP 18807044A EP 3717728 A1 EP3717728 A1 EP 3717728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- input member
- spring
- coil spring
- spring brake
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B9/72—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
- E06B2009/905—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions using wrap spring clutches
Definitions
- Electromechanical actuator and home automation system comprising such an actuator
- the present invention relates to an electromechanical actuator.
- the electromechanical actuator includes a spring brake. This type of spring brake is more particularly suitable for a so-called tubular electromechanical actuator.
- the present invention also relates to a home automation closure or sun protection system comprising a windable screen on a winding tube rotated by such an electromechanical actuator.
- the present invention relates to the field of occultation devices comprising a motorized drive device moving a screen, between at least a first position and at least a second position.
- a motorized driving device comprises an electromechanical actuator of a movable closure, concealment or sun protection element such as a shutter, a door, a grating, a blind or any other equivalent equipment, hereafter called a screen .
- the electromechanical actuator comprises an electric motor, a gearbox and a spring brake.
- the spring brake comprises a coil spring, a drum, an input member, an output member and a cover. Each end of the coil spring forms a tab extending radially relative to an axis of rotation of the spring brake.
- the drum has a cylindrical housing.
- an internal friction surface of the drum housing is configured to cooperate with at least one coil of the coil spring. In this way, at least one coil of the coil spring is radially constrained by the drum housing.
- the input member comprises a drive tooth.
- the drive tooth extends between the input member and the cover, in an assembled configuration of the spring brake.
- the input member or the cover comprises a spacer. The spacer extends between the input member and the cover in the assembled configuration of the spring brake.
- the output member comprises two ears.
- the input member is rotated by the electric motor.
- the drive tooth of the input member is configured to cooperate with one of the lugs of the coil spring, so as to rotate the helical spring around the axis of rotation of the spring brake in a first direction. of rotation.
- Such a movement releases the spring brake.
- the friction force between the turns of the coil spring and the inner surface of the drum housing is decreased during the rotational drive of the coil spring in the first direction of rotation. In other words, this movement tends to reduce the diameter of the outer shell of the coil spring and thus to reduce the radial stress between the coil spring and the inner surface of the drum housing.
- One of the ears of the output member is configured to cooperate with one of the lugs of the coil spring, so as to rotate the helical spring around the axis of rotation of the spring brake in a second direction of rotation. rotation, the second direction of rotation being opposite the first direction of rotation.
- Such a movement activates the spring brake.
- the frictional force between the turns of the coil spring and the inner surface of the drum housing is increased during the rotational drive of the coil spring in the second direction of rotation. In other words, this movement tends to increase the diameter of the outer shell of the coil spring and thus to increase the radial stress between the coil spring and the inner surface of the drum housing.
- this electromechanical actuator has the disadvantage of generating operating noises and manufacturing defects related to a misalignment of the coil spring with respect to the input member, the output member and the cover. This misalignment generates unwanted friction between the elements of the spring brake.
- the coil spring lacks radial retention relative to the input member, the output member and the cover.
- the coil spring is positioned obliquely inside the drum housing.
- the coil spring rubs on the inner surface friction of the drum housing and at least partially removes a lubricant deposited on the internal friction surface and on the coil spring.
- the object of the present invention is to solve the abovementioned drawbacks and to propose an electromechanical actuator for a home automation closure or sun protection system comprising a spring brake, as well as a home automation system for closing or solar protection comprising such an electromechanical actuator. , to guarantee the radial retention of a helical spring with respect to an input member, an output member and a cover, during the manufacture of the spring brake and during the operation of the spring brake, as well as to reduce the operating noise of the spring brake during the rotational drive of an input member and / or an output member within a housing of a drum.
- an electromechanical actuator for a home automation system for closing or sun protection comprising at least:
- the spring brake comprising at least:
- drum comprising a housing, the housing of the drum comprising an internal friction surface configured to cooperate with at least one coil of the coil spring,
- the inlet comprising a drive tooth member, the drive tooth extending between the input member and the cover in a spring brake assembly configuration
- the input member or the cover comprising a spacer, the spacer extending between the input member and the cover, in the assembled configuration of the spring brake.
- the input member comprises a first radial holding member of the coil spring extending between the drive tooth and the spacer, according to a first side of the spring brake, in the assembled brake configuration. on springs.
- the cover comprises a second radial retention element of the coil spring extending between the driving tooth and the spacer, according to a second side of the spring brake, in the assembled configuration of the spring brake, the second side of the spring brake being opposed to the first side of the spring brake, by relative to an axis of rotation of the spring brake.
- the first and second radial retaining elements of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to guarantee the radial retention of the coil spring with respect to the body member. at the output member and at the hood, during the production of the spring brake and during the operation of the spring brake, as well as in reducing the operating noise of the spring brake during the rotary drive the input member and / or the output member within the drum housing.
- the first and second radial holding elements of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to avoid manufacturing defects related to misalignment of the spring helical with respect to the input member, the output member and the cover.
- the first and second radial holding members of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to guarantee the positioning of the coil spring inside the housing of the drum, during the assembly of the spring brake and, more particularly, during a winding operation of the coil spring.
- the first and second radial retaining elements of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to limit friction. of the coil spring on the internal friction surface of the drum housing and therefore to avoid the removal of at least a portion of a lubricant deposited on the inner friction surface and on the coil spring.
- the first and second radial holding elements respectively comprise a rib extending partially between the input member and the cover, in the direction of the axis of rotation, in the assembled configuration. spring brake.
- an outer surface of the first radial holding member and an outer surface of the second radial holding member are configured to cooperate with at least one coil of the coil spring.
- the coil spring is formed from a thread.
- a first end of the coil spring forms a first leg.
- a second end of the coil spring forms a second leg.
- each of the first and second tabs extends radially with respect to the axis of rotation and towards the inside of the coil spring.
- the first leg of the coil spring is configured to cooperate with a first surface of the drive tooth of the input member and the second leg the coil spring is configured to cooperate with a second surface of the drive tooth of the input member, the second surface of the drive tooth being opposite to the first surface of the drive tooth.
- the first leg of the coil spring is disposed between the first surface of the drive tooth of the input member and the spacer.
- the second leg of the coil spring is disposed between the second surface of the drive tooth of the input member and the spacer.
- the input member comprises a first plate.
- the hood includes a second tray.
- the first leg of the coil spring extends along the second plate of the bonnet and the second leg of the coil spring extends along the first plate of the input member. .
- the input member and the cover are held integral in rotation about the axis of rotation, in the assembled configuration of the spring brake.
- the input member and the cover are fixed to each other by means of fixing elements.
- the fastening elements of the input member and the cover are elastic snap-fastening elements arranged at the level of the drive tooth and the spacer.
- the present invention aims, according to a second aspect, a home automation system for closing or sun protection comprising a windable screen on a winding tube rotated by an electromechanical actuator according to the invention.
- Figure 1 is a schematic cross-sectional view of a home automation system according to one embodiment of the invention
- Figure 2 is a schematic perspective view of the home automation system shown in Figure 1;
- Figure 3 is a schematic partial sectional view of the home automation system shown in Figure 2, at an electromechanical actuator;
- Figure 4 is an exploded schematic perspective view of a spring brake of the electromechanical actuator shown in Figure 3;
- Figure 5 is a schematic perspective view of the spring brake illustrated in Figure 4, wherein a spring brake drum has been removed;
- FIG. 6 is a first schematic sectional view of the spring brake illustrated in FIGS. 4 and 5, before the introduction of an input member, an output member and a helical spring inside the drum;
- FIG. 7 is a second schematic sectional view of the spring brake illustrated in FIGS. 4 to 6, after the introduction of the input member, the output member and the coil spring inside the drum, where the drum of the spring brake has been removed;
- Figure 8 is a schematic perspective view of the input member of the spring brake illustrated in Figures 4 to 7;
- Figure 9 is a schematic perspective view of a spring brake cover illustrated in Figures 4 to 7.
- FIGS. 1 and 2 a home automation installation according to the invention and installed in a building having an opening 1, window or door, equipped with a screen 2 belonging to a concealment device is described first of all. 3, in particular a motorized roller shutter.
- the occulting device 3 may be a shutter, as shown in Figures 1 and 2, a blind fabric or with adjustable blades, or a rolling gate.
- the present invention applies to all types of occulting device.
- the screen 2 of the occulting device 3 is wound on a winding tube 4 driven by a motorized drive device 5 and movable between a wound position, particularly high, and a unwound position, particularly low.
- the movable screen 2 of the concealment device 3 is a closure, concealment and / or sun protection screen, winding on the winding tube 4, the internal diameter of which is substantially greater than the external diameter of a electromechanical actuator 1 1, so that the electromechanical actuator 1 1 can be inserted into the winding tube 4, during assembly of the occulting device 3.
- the motorized drive device 5 comprises the electromechanical actuator 11, in particular of the tubular type, making it possible to rotate the winding tube 4, so as to unroll or wind up the screen 2 of the occulting device 3.
- the concealment device 3 comprises the winding tube 4 for winding the screen 2.
- the electromechanical actuator 11 is inserted into the winding tube 4.
- the shutter which forms the concealment device 3
- the shutter comprises an apron comprising horizontal blades articulated to each other, forming the screen 2 of the shutter 3, and guided by two lateral rails 6. These blades are joined, when the deck 2 of the shutter 3 reaches its low position unrolled.
- the wound up position corresponds to the support of a final end plate 8, for example L-shaped, of the apron 2 of the shutter 3 against an edge of a trunk 9 of the shutter 3 or at the end of the final end blade 8 in a programmed high end position.
- the lowered low position corresponds to the support of the final end blade 8 of the deck 2 of the shutter 3 against a threshold 7 of the opening 1 or at the end of the final end blade 8 in a programmed low end position.
- the first blade of the apron 2 of the roller shutter 3, opposite to the final end blade 8, is connected to the winding tube 4 by means of at least one hinge 10, in particular a strip-shaped attachment piece. .
- the winding tube 4 is disposed inside the trunk 9 of the roller shutter 3.
- the apron 2 of the roller shutter 3 winds and unwinds around the winding tube 4 and is housed at least in part at the inside the trunk 9.
- the box 9 is disposed above the opening 1, or in the upper part of the opening 1.
- the motor drive device 5 is controlled by a control unit.
- the control unit can be for example a local control unit 41, where the local control unit 41 can be wired or wirelessly connected to a central control unit 42.
- the central control unit 42 can drive the local control unit 41, as well as other units similar local control and distributed in the building.
- the central control unit 42 may be in communication with a remote weather station outside the building, including, in particular, one or more sensors that can be configured to determine, for example, a temperature, a brightness or a speed of wind.
- a remote control 43 which may be a type of local control unit, provided with a control keyboard and which comprises selection and display means, also allows a user to intervene on the electromechanical actuator 11. , the local control unit 41 and / or the central control unit 42.
- the motorized drive device 5 is preferably configured to execute the unwinding or winding commands of the screen 2 of the concealment device 3, which can be transmitted, in particular, by the remote control 43.
- the electromechanical actuator 11 comprises at least one electric motor 12, a gearbox 14 and a spring brake 15.
- the electric motor 12 comprises a rotor and a stator, not shown, positioned coaxially around an axis of rotation X, which is also the axis of rotation of the winding tube 4 in the mounted configuration of the motorized drive device. 5.
- Control means of the electromechanical actuator January 1, allowing the displacement of the screen 2 of the occulting device 3, comprise at least one electronic control unit 44.
- This electronic control unit 44 is able to put into operation the electric motor 12 of the electromechanical actuator 11 and, in particular, allow the electric power supply of the electric motor 12.
- the electronic control unit 44 controls, in particular, the electric motor 12, so as to open or close the screen 2, as described above.
- the electronic control unit 44 also comprises an order receiving module, in particular of radio orders issued by a command transmitter, such as the remote control 43 intended to control the electromechanical actuator 11 or one of the 41 or central control units 42.
- the order receipt module can also allow the receipt of orders transmitted by wire means.
- the electronic control unit 44 is disposed inside a casing 13 of the electromechanical actuator 11.
- the control means of the electromechanical actuator 11 comprise hardware and / or software means.
- the hardware means may comprise at least one microcontroller.
- the electromechanical actuator January 1 is supplied with electrical energy by a mains power supply network, or by means of a battery, which can be recharged, for example, by a photovoltaic panel.
- the electromechanical actuator 1 1 moves the screen 2 of the occulting device 3.
- the electromechanical actuator January 1 comprises a power supply cable 21 for its supply of electrical energy from a mains power supply network.
- the housing 13 of the electromechanical actuator 11 is preferably of cylindrical shape.
- the housing 13 is made of a metallic material.
- the housing material of the electromechanical actuator is not limiting and may be different. It may, in particular, be a plastic material.
- the winding tube 4 is rotated about the axis of rotation X and the casing 13 of the electromechanical actuator 11 supported by means of two pivot links.
- the first pivot connection is made at a first end of the winding tube 4 by means of a ring 18 inserted around and at one end 13a of the housing 13 of the electromechanical actuator 1 1.
- the ring 18 thus makes it possible to make a landing.
- the second pivot connection is formed at a second end of the winding tube 4.
- the electromechanical actuator 1 1 comprises a torque support 19.
- the torque support 19 protrudes at one end 13a of the housing 13 of the electromechanical actuator January 1, in particular the end 13a of the housing 13 receiving the ring gear 18.
- the torque support 19 of the electromechanical actuator 1 1 thus makes it possible to fix the electromechanical actuator January 1 on a frame 20, in particular to a cheek of the box 9.
- torque support 19 of the electromechanical actuator 1 1 can be used to close the end 13a of the housing 13.
- the torque support 19 of the electromechanical actuator 1 1 can support the electronic control unit 44.
- the electronic control unit 44 can be supplied with electrical energy by means of the power supply cable 21 electrically connected to the mains power supply network, or to a battery.
- the reducer 14 comprises at least one reduction stage.
- Said at least one reduction stage may be an epicyclic gear train.
- the type and the number of reduction stages of the reducer are in no way limiting.
- the electromechanical actuator 11 comprises an output shaft 16. An end of the output shaft 16 protrudes from the housing 13 of the electromechanical actuator 11, in particular with respect to an end 13b of the housing 13 opposite. at its end 13a.
- the output shaft 16 of the electromechanical actuator January 1 is configured to rotate a connecting element 17 connected to the winding tube 4.
- the connecting element 17 is in the form of a wheel.
- the electromechanical actuator 11 When the electromechanical actuator 11 is put into operation, the electric motor 12 and the gearbox 14 rotate the output shaft 16. In addition, the output shaft 16 of the electromechanical actuator 11 causes rotating the winding tube 4 through the connecting element 17. Thus, the winding tube 4 rotates the screen 2 of the occulting device 3, so as to open or close the opening 1.
- the electric motor 12, the gearbox 14 and the spring brake 15 are mounted inside the casing 13 of the electromechanical actuator 11.
- the spring brake 15 is disposed between the electric motor 12 and the gearbox 14, that is to say at the output of the electric motor 12.
- the spring brake 15 is arranged between two reduction stages of the gearbox 14.
- the spring brake 15 is arranged at the outlet of the gearbox 14.
- the electromechanical actuator January 1 may also include a limit and / or obstacle detection device, this detection device can be mechanical or electronic.
- the spring brake 15 comprises at least one helical spring 22, a drum 23, an input member 24, an output member 25 and a cover 33.
- the drum 23 is held in position in the housing 13 of the electromechanical actuator 11, in particular by means of clearances 28 formed on the outer periphery of the drum 23 and configured to cooperate with tabs, not shown, of a Gearbox housing 14.
- the housing of the gearbox 14 is held in position in the casing 13 of the electromechanical actuator January 1.
- the drum 23 comprises a housing 26.
- the housing 26 of the drum 23 is of cylindrical shape.
- the housing 26 of the drum 23 is opening.
- the helical spring 22, the input member 24, the outlet member 25 and the cover 33 are disposed inside the housing 26 of the drum 23, in an assembled configuration of the spring brake 15.
- the output member 25 is disposed opposite the input member 24.
- the coil spring 22 comprises a plurality of turns.
- the turns of the coil spring 22 are centered on an axis coincident with the axis of rotation X, when the spring brake 15 is assembled and then mounted in the electromechanical actuator 11.
- the input member 24 and the output member 25 are centered on an axis coincident with the axis of rotation X, when the spring brake 15 is assembled and then mounted in the electromechanical actuator January 1.
- the housing 26 of the drum 23 comprises an internal friction surface 27 configured to cooperate with at least one coil of the coil spring 22.
- At least one coil of the coil spring 22 is radially constrained by the housing 26 of the drum 23.
- the coil spring 22 is mounted clamping inside the housing 26 of the drum 23, so as to frictionally secure the coil spring 22 and the drum 23, when the coil spring 22 is at rest, as shown in Figure 7 .
- the coil spring 22 is formed from a wire 48.
- a first end of the coil spring 22 forms a first tab 29a.
- a second end of the coil spring 22 forms a second leg 29b.
- each of first and second tabs 29a, 29b extend radially with respect to the axis of rotation X and towards the inside of the coil spring 22.
- the coil spring 22 comprises two tabs 29a, 29b, only one of which is visible in FIG.
- each tab 29a, 29b of the coil spring 22 extends radially with respect to the axis of rotation X, in the assembled configuration of the spring brake 15.
- each tab 29a, 29b of the coil spring 22 extends axially with respect to the axis of rotation X, in the assembled configuration of the spring brake 15.
- the tabs 29a, 29b of the coil spring 22 extend radially with respect to the axis of rotation X and towards the inside of the coil spring 22, in particular from the turns of the coil spring 22 towards the central axis of the coil spring 22, as shown in FIG.
- the input member 24, in particular a drive tooth 31, is configured to cooperate with at least one of the tabs 29a, 29b of the coil spring 22, so as to rotate the helical spring 22 around the coil.
- the friction force between at least one coil of the coil spring 22 and the inner surface 27 of the housing 26 of the drum 23 is decreased during the driving in rotation of the coil spring 22 in the first direction of rotation.
- this movement tends to reduce the diameter of the outer casing of the coil spring 22 and thus to reduce the radial stress between the coil spring 22 and the inner surface 27 of the housing 26 of the drum 23.
- the movement generated by the electric motor 12 can be transmitted from the input member 24 to the output member 25.
- the outer casing of the coil spring 22 is defined by the external generatrices of the turns of the coil spring 22.
- the output member 25 comprises two lugs 39, as illustrated in FIGS. 4, 6 and 7.
- the lugs 39 of the output member 25 are configured to be inserted inside the coil spring 22, in the configuration assembly of the spring brake 15.
- each lug 39 of the output member 25 comprises a recess 40.
- the recess 40 of each lug 39 of the output member 25 is configured to cooperate with one of the lugs 29a, 29b of the coil spring 22.
- the outlet member 25, in particular one of the lugs 39 is configured to cooperate with at least one of the lugs 29a, 29b of the coil spring 22, so as to rotate the helical spring 22 around the axis of rotation X in a second direction of rotation.
- the second direction of rotation is opposite to the first direction of rotation.
- Such a movement activates the spring brake 15, that is to say, tends to block or to slow the rotation of the coil spring 22 inside the housing 26 of the rotary drum 23.
- the friction force between at least one coil of the coil spring 22 and the inner surface 27 of the housing 26 of the drum 23 is increased during the driving in rotation of the coil spring 22 in the second direction of rotation.
- this movement tends to increase the diameter of the outer casing of the coil spring 22, in particular by bringing the tabs 29a, 29b of the coil spring 22 closer together, and thus to increase the radial stress between the coil spring 22 and the surface internal 27 of the housing 26 of the drum 23.
- the spring brake 15 comprises a lubricant, not shown, disposed between the coil spring 22 and the inner surface 27 of the housing 26 of the drum 23.
- the lubricant is, preferably, grease.
- the input member 24 is configured to be rotated by the electric motor 12, in an assembled configuration of the electromechanical actuator January 1.
- the input member 24 comprises a housing 50.
- the housing 50 of the input member 24 is configured to cooperate with a shaft 37 of the output member 25.
- the shaft 37 of the output member 25 can receive and transmit a torque from the electric motor 12.
- the shaft 37 of the output member 25 is configured to cooperate with the gearbox 14.
- the shaft 37 of the output member 25 makes it possible to receive and transmit torque from the electric motor 12 to the gearbox 14 via the housing 50 of the input member 24 and the shaft 37 of the output member 25.
- the shaft 37 of the output member 25 is centered with respect to the axis of rotation X, in the assembled configuration of the electromechanical actuator January 1.
- the housing 50 of the input member 24 is made by means of a bore disposed in the center of the input member 24 and, more particularly, centered with respect to the axis of rotation X, in the assembled configuration of the spring brake 15.
- the output member 25 comprises a pin 51 disposed in alignment with the shaft 37. The pin 51 of the output member 25 is thus also centered with respect to the axis of rotation X, in the assembled configuration of the spring brake 15.
- the pin 51 of the output member 25 is inserted into the housing 50 of the input member 24.
- the cover 33 comprises an opening 53.
- the opening 53 of the cover 33 is through.
- the opening 53 of the cover 33 is configured to cooperate with the shaft 37 of the outlet member 25.
- the shaft 37 of the output member 25 is inserted into the opening 53 of the cover 33, so as to extend on either side of the cover 33, in the assembled configuration of the spring brake 15.
- the input member 24 comprises the drive tooth 31, as illustrated in FIGS. 4 and 6 to 8.
- the drive tooth 31 extends between the input member 24 and the cover 33, in the configuration assembly of the spring brake 15.
- the drive tooth 31 of the input member 24 is inserted inside the coil spring 22, in the assembled configuration of the spring brake 15.
- the input member 24 comprises a first plate 30.
- the cover 33 comprises a second plate 32.
- the first leg 29a of the coil spring 22 extends along the second plate 32 of the cover 33 and the second leg 29b of the coil spring 22 extends along the first plate 30 of the input member 24.
- the first plate 30 includes the drive tooth 31.
- the first tab 29a of the coil spring 22 is configured to cooperate with a first surface 38a of the drive tooth 31 of the input member 24 and the second tab 29b of the helical spring 22 is configured to cooperate with a second surface 38b of the drive tooth 31 of the input member 24.
- the second surface 38b of the drive tooth 31 is opposite the first surface 38a of the tooth of the training 31.
- the drive tooth 31 of the input member 24 is disposed between the two lugs 29a, 29b of the coil spring 22 and is configured to cooperate with one or the other of the lugs 29a, 29b of the coil spring 22, in the direction of rotation drive generated by the electric motor 12, as illustrated in FIGS. Figures 6 and 7.
- the drive tooth 31 of the input member 24 comprises two drive faces 38a, 38b.
- Each drive face 38a, 38b of the drive tooth 31 is configured to cooperate with one of the lugs 29a, 29b of the coil spring 22.
- the coil spring 22 and the output member 25 are held axially between the first plate 30 of the input member 24 and the second plate 32 of the hood 33 .
- the input member 24 and, more particularly, the first plate 30 comprises a spacer 34.
- the spacer 34 extends between the input member 24 and the cover 33, in the assembled configuration of the spring brake 15. .
- the spacer 34 of the input member 24 makes it possible to maintain an axial separation between the input member 24 and the cover 33 and, more particularly, between the first and second plates 30, 32.
- the spacer 34 of the input member 24 is disposed diametrically opposite the drive tooth 31 of the input member 24, as illustrated in FIGS. 4 and 6 to 8.
- the drive tooth 31 of the input member 24 corresponds to another spacer.
- the drive tooth 31 of the input member 24 also makes it possible to maintain the axial spacing between the input member 24 and the cover 33 and, more particularly, between the first and second plates 30, 32 .
- the cover 33 and, more particularly, the second plate 32 comprises the spacer 34.
- the spacer 34 extends between the input member 24 and the cover 33, in the assembled configuration of the brake with spring 15.
- the spacer 34 of the cover 33 can be arranged diametrically opposite the drive tooth 31 of the input member 24, with respect to the axis of rotation X, in the assembled configuration. spring brake 15.
- the first and second plates 30, 32 each comprise a peripheral flange 35, 36.
- the two peripheral flanges 35, 36 are arranged vis-à-vis the one of the other along the axis of rotation X, in the assembled configuration of the spring brake 15.
- the input member 24 comprises a first radial holding element 54 of the helical spring 22 extending between the drive tooth 31 and the spacer 34, in a first side C1 of the spring brake 15, in the assembled configuration of the spring brake 15.
- the cover 33 comprises a second radial holding element 55 of the coil spring 22 extending between the drive tooth 31 and the spacer 34, along a second side C2 of the spring brake 15, in the assembled configuration of the spring brake 15.
- the second side C2 of the spring brake 15 is opposed, more particularly diametrically opposite, to the first side C1 of the spring brake 15, with respect to the axis of rotation X.
- the first and second radial holding elements 54, 55 of the input member 24 and the cap 33 respectively extending between the drive tooth 31 and the spacer 34 make it possible to guarantee the radial retention of the helical spring. 22 relative to the input member 24, the output member 25 and the cover 33, during the manufacture of the spring brake 15 and during operation of the spring brake 15, as well as to reduce the noise of operation of the spring brake 15 during driving in rotation of the input member 24 and / or the output member 25 inside the housing 26 of the drum 23.
- the first and second radial holding elements 54, 55 of the input member 24 and the cover 33 extending respectively between the drive tooth 31 and the spacer 34 make it possible to avoid manufacturing related to a misalignment of the coil spring 22 with respect to the input member 24, the outlet member 25 and the hood 33.
- the first and second radial holding elements 54, 55 of the input member 24 and the cap 33 respectively extending between the driving tooth 31 and the spacer 34 make it possible to guarantee the positioning of the helical spring. 22 inside the housing 26 of the drum 23, during the assembly of the spring brake 15 and, more particularly, during a bandage operation of the coil spring 22.
- the first and second radial holding elements 54, 55 of the input member 24 and the cover 33 are respectively disposed on one side C1, C2 of the spring brake 15 with respect to the axis of rotation X and , more particularly, arranged diametrically opposite with respect to the axis of rotation X.
- the first and second radial holding members 54, 55 of the input member 24 and the cover 33 respectively extending between the drive tooth 31 and the spacer 34 make it possible to limit friction of the coil spring 22 on the internal friction surface 27 of the housing 26 of the drum 23 and consequently to avoid the removal of at least a portion of the lubricant deposited on this internal friction surface 27 and on the coil spring 22.
- such a spring brake 15 requires consideration of an angular clearance a between one of the tabs 29a, 29b of the coil spring 22, in this case the second tab 29b of the coil spring 22, and one of the ears 39 of the output member 25, in this case a second lug 39 of the output member 25, so as to allow the operation of the spring brake 15, both during the release than when activating the spring brake 15, as illustrated in FIG. 7.
- This angular displacement a makes it possible to determine the angular dimensioning of the driving tooth 31 of the input member 24, the spacer 34 and the lugs 39 of the output member 25.
- the first and second radial holding elements 54, 55 respectively of the input member 24 and the cover 33 make it possible to limit the value of the angular deflection a and, consequently, to optimize the angular dimensioning of the drive tooth. 31 of the input member 24, the spacer 34 and the lugs 39 of the output member 25, so as to ensure the robustness thereof.
- the angular deflection a can be reduced by a value of the order of 8 ° to 10 °.
- the first and second radial holding elements 54, 55 respectively of the input member 24 and the cover 33 make it possible to avoid the friction of at least one coil of the coil spring 22 against the outer surface 45 of the output 25 and, therefore, optimize the outer diameter of the output member 25.
- the outer diameter of the output member 25 is defined by a circle passing through the outer surface 45 of each of the ears 39 of the output member 25.
- the first and second radial retaining elements 54, 55 respectively of the input member 24 and the cover 33 make it possible to guarantee the radial retention of the helical spring 22 with respect to the input member 24, to the outlet member 25 and to the cover 33, during the manufacture of the brake spring 15 and during operation of the spring brake 15.
- first side C1 and the second side C2 of the spring brake 15 are defined with respect to the axis of rotation X.
- the axis of rotation X extends to the center of the spring brake 15 and, more particularly, between the drive tooth 31 and the spacer 34, in the assembled configuration of the spring brake 15.
- the first side C1 of the spring brake 15 is located to the right of the axis of rotation X.
- the second side C2 of the spring brake 15 is situated to the left of the axis of rotation. X.
- the first and second radial holding elements 54, 55 respectively comprise a rib extending partially between the input member 24 and the cover 33, in the direction of the axis of rotation X, in the assembled configuration of the spring brake 15.
- the radial retention of the helical spring 15 with respect to the input member 24, the outlet member 25 and the cover 33 is implemented in an axial direction of the spring brake 15 and, more particularly, according to the axis of rotation X, so as to guarantee the alignment of the members 22, 24, 25, 33 of the spring brake 15.
- an outer surface 46 of the first radial retaining element 54 and an outer surface 47 of the second radial retaining element 55 are configured to cooperate with at least one turn of the helical spring 22.
- the radial retention of the helical spring 15 with respect to the input member 24, the output member 25 and the cover 33 is implemented by the support of at least one turn of the coil spring 22 against an outer surface of the input member 24 and an outer surface of the cover 33.
- the radial retention of the helical spring 15 with respect to the input member 24, the output member 25 and the cover 33 is implemented by placing at least a first turn of the coil spring 22 against an outer surface of the input member 24 and by resting at least a second turn of the coil spring 22 against an outer surface of the cover 33.
- the first tab 29a of the coil spring 22 is disposed between the first surface 38a of the drive tooth 31 of the input member 24 and the spacer 34.
- the second tab 29b of the coil spring 22 is disposed between the second surface 38b of the drive tooth 31 of the input member 24 and the spacer 34.
- the input member 24 and the cover 33 and, more particularly, the first and second plates 30, 32 are held integral in rotation about the axis of rotation X, in the assembled configuration of the spring brake 15.
- the input member 24 and the cover 33 are fixed to each other by means of fasteners 52a, 52b.
- the fastening elements 52a, 52b of the input member 24 and the cover 33 are resilient snap-fastening elements arranged at the level of the drive tooth 31 and the spacer 34.
- a first fastener 52a of the input member 24 is provided at the drive tooth 31 of the input member 24.
- a second fastener 52a of the input member 24 is formed at the spacer 34 of the input member 24.
- the input member 24 comprises two fixing elements 52a and the cover 33 comprises two fixing elements 52b.
- the number of fastening elements of the input member and the cover is not limiting and may be different, in particular greater than or equal to three.
- the input member 24 and the cover 33 and, more particularly, the first and second trays 30, 32 can be held together by simple interlocking.
- the output member 25 is configured to be connected to the screen 2 of the occulting device 3.
- the input member 24 and the output member 25 are made of plastic.
- the cover 33 is made of plastic.
- the plastic material of the input member 24, the outlet member 25 and the cap 33 may be polybutylene terephthalate, also called PBT, or polyacetal, also called POM.
- the outlet member 25 may be made of zamac (acronym for the names of the metals that comprise it: zinc, aluminum, magnesium and copper).
- the drum 23 is made of steel, in particular sintered steel.
- the use of sintered steel to produce the drum 23 makes it possible to reduce the frictional resistance of the coil spring 22 against the internal friction surface 27 of the housing 26 of the drum 23.
- the first and second radial holding elements of the input member and the bonnet respectively extending between the driving tooth and the spacer make it possible to guarantee the radial retention of the coil spring with respect to the input member, the output member and the cover, during the manufacture of the spring brake and during operation of the spring brake, as well as reducing the operating noise of the spring brake, when rotational drive of the input member and / or the output member within the drum housing.
- the first and second radial holding elements of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to avoid manufacturing defects related to misalignment of the spring helical with respect to the input member, the output member and the cover.
- the first and second radial holding members of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to guarantee the positioning of the coil spring inside the housing of the drum, during the assembly of the spring brake and, more particularly, during a winding operation of the coil spring.
- the first and second radial retaining elements of the input member and the cap respectively extending between the driving tooth and the spacer make it possible to limit friction. of the coil spring on the internal friction surface of the drum housing and therefore to avoid the removal of at least a portion of a lubricant deposited on the inner friction surface and on the coil spring.
- the electronic control unit 44 is disposed outside the housing 13 of the electromechanical actuator January 1 and, in particular, mounted on the frame 20 or in the torque support 19.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL18807044T PL3717728T3 (pl) | 2017-12-01 | 2018-11-16 | Siłownik elektromechaniczny i instalacja automatyki domowej zawierająca taki siłownik |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1771298A FR3074516B1 (fr) | 2017-12-01 | 2017-12-01 | Actionneur electromecanique et installation domotique comprenant un tel actionneur |
| PCT/EP2018/081637 WO2019105771A1 (fr) | 2017-12-01 | 2018-11-16 | Actionneur électromécanique et installation domotique comprenant un tel actionneur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3717728A1 true EP3717728A1 (fr) | 2020-10-07 |
| EP3717728B1 EP3717728B1 (fr) | 2021-09-01 |
Family
ID=61224191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18807044.5A Active EP3717728B1 (fr) | 2017-12-01 | 2018-11-16 | Actionneur électromécanique et installation domotique comprenant un tel actionneur |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11053735B2 (fr) |
| EP (1) | EP3717728B1 (fr) |
| CN (1) | CN111433427B (fr) |
| FR (1) | FR3074516B1 (fr) |
| PL (1) | PL3717728T3 (fr) |
| WO (1) | WO2019105771A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3131345A1 (fr) * | 2021-12-27 | 2023-06-30 | Somfy Activites Sa | Actionneur électromécanique comportant un moteur électrique sans capteurs, installation de fermeture comportant un tel actionneur électromécanique |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140157939A1 (en) * | 2011-12-09 | 2014-06-12 | Grand Rapids Controls Company, Llc | Release mechanism |
| CN107060625B (zh) * | 2017-06-06 | 2023-02-03 | 雷振邦 | 内置式卷帘驱动装置 |
| FR3072119B1 (fr) * | 2017-10-10 | 2019-11-08 | Somfy Activites Sa | Actionneur electromecanique tubulaire et installation domotique comprenant un tel actionneur |
| FR3087817B1 (fr) * | 2018-10-26 | 2020-11-13 | Somfy Activites Sa | Actionneur electromecanique et installation domotique comprenant un tel actionneur |
| NL2024607B1 (en) * | 2020-01-06 | 2021-09-07 | Vako B V | Operating mechanism for a cordless window covering |
| FR3152163B1 (fr) | 2023-08-14 | 2025-08-22 | Somfy Activites Sa | Actionneur électromécanique et dispositif d’occultation comprenant un tel actionneur électromécanique |
| FR3152164B1 (fr) * | 2023-08-14 | 2025-08-22 | Somfy Activites Sa | Actionneur électromécanique et dispositif d’occultation comprenant un tel actionneur électromécanique |
| CN119195631B (zh) * | 2024-11-13 | 2025-03-07 | 厦门东生荣科技股份有限公司 | 一种卷帘装置的动力系统以及卷帘装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8752607B2 (en) * | 2007-10-22 | 2014-06-17 | Hunter Douglas Inc. | Covering for architectural openings including a rotation limiter |
| FR2943379B1 (fr) * | 2009-03-17 | 2011-04-08 | Somfy Sas | Frein a ressort pour actionneur d'entrainement d'un ecran domotique et actionneur equipe d'un tel frein |
| FR2946997B1 (fr) * | 2009-06-23 | 2011-07-08 | Somfy Sas | Actionneur electrique d'entrainement d'un ecran domotique |
| US8746320B2 (en) * | 2010-02-26 | 2014-06-10 | Teh Yor Co., Ltd. | Window covering with improved controls |
| FR2995001B1 (fr) * | 2012-09-05 | 2014-09-26 | Somfy Sas | Actionneur electromecanique d'entrainement d'un ecran domotique |
| US20150059992A1 (en) * | 2013-08-29 | 2015-03-05 | Tai-Ping Liu | Damper unit for Roller Blind |
| FR3022289B1 (fr) * | 2014-06-17 | 2016-06-03 | Somfy Sas | Actionneur electromecanique et installation domotique comprenant un tel actionneur |
| US20160369558A1 (en) * | 2015-06-19 | 2016-12-22 | Lutron Electronics Co., Inc. | Variable resistance brake for use with a roller tube of a window treatment |
| CN205532187U (zh) | 2016-01-29 | 2016-08-31 | 亿丰综合工业股份有限公司 | 窗帘升降控制结构 |
| FR3050266B1 (fr) * | 2016-04-15 | 2021-02-12 | Somfy Sas | Procede de controle de conformite d'un ressort, procede de fabrication d'un tel ressort et ressort ainsi controle |
-
2017
- 2017-12-01 FR FR1771298A patent/FR3074516B1/fr not_active Expired - Fee Related
-
2018
- 2018-11-16 CN CN201880077662.5A patent/CN111433427B/zh active Active
- 2018-11-16 WO PCT/EP2018/081637 patent/WO2019105771A1/fr not_active Ceased
- 2018-11-16 EP EP18807044.5A patent/EP3717728B1/fr active Active
- 2018-11-16 US US16/759,479 patent/US11053735B2/en active Active
- 2018-11-16 PL PL18807044T patent/PL3717728T3/pl unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3131345A1 (fr) * | 2021-12-27 | 2023-06-30 | Somfy Activites Sa | Actionneur électromécanique comportant un moteur électrique sans capteurs, installation de fermeture comportant un tel actionneur électromécanique |
| WO2023126383A1 (fr) | 2021-12-27 | 2023-07-06 | Somfy Activites Sa | Actionneur électromécanique comportant un moteur électrique sans capteurs, installation de fermeture comportant un tel actionneur électromécanique |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200332596A1 (en) | 2020-10-22 |
| CN111433427B (zh) | 2021-04-20 |
| EP3717728B1 (fr) | 2021-09-01 |
| CN111433427A (zh) | 2020-07-17 |
| PL3717728T3 (pl) | 2022-04-25 |
| WO2019105771A1 (fr) | 2019-06-06 |
| FR3074516B1 (fr) | 2019-11-22 |
| FR3074516A1 (fr) | 2019-06-07 |
| US11053735B2 (en) | 2021-07-06 |
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