• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An electromechanical actuator for a home automation system for closing or sun protection comprises an electric motor, a gearbox, a spring brake (15), which comprises a helical spring (22), a drum (23), an input member ( 24), an output member (25). The drum (23) has a housing (26). An internal friction surface (27) of the housing (26) of the drum (23) cooperates with at least one coil of the coil spring (22). The spring brake (15) also comprises at least one ring (50) disposed between an outer surface (51) of the input member (24) and / or the output member (25) and the inner surface friction (27) of the housing (26) of the drum (23). The home automation system of the invention comprises such an actuator.
    公开号:FR3022289A1
    申请号:FR1455553
    申请日:2014-06-17
    公开日:2015-12-18
    发明作者:Adrien Brondex
    申请人:Somfy SA；
    IPC主号:
    专利说明:

    [0001] 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.
    [0002] In general, 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 a second position. A motorized drive 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 material, hereafter called screen. Document FR 2 610 668 A1 is already known which describes an electromechanical actuator for a home automation system for closing or sun protection comprising an electric motor, a gearbox and a spring brake. The spring brake comprises a coil spring, a drum, an input member and an output member. 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. And an internal friction surface of the drum housing cooperates 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 is rotated by the electric motor. The input member cooperates 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. And the friction force between the turns of the coil spring and the internal friction 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 decrease the diameter of the outer casing of the coil spring and thus to reduce the radial stress between the coil spring and the internal friction surface of the drum housing.
    [0003] The output member cooperates with one of the lugs of the helical spring, so as to rotate the helical spring around the axis of rotation of the spring brake in a second direction of rotation, the second direction of rotation being opposite. in the first direction of rotation. Such a movement activates the spring brake. And the frictional force between the turns of the coil spring and the internal friction 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 internal friction surface of the drum housing. However, this electromechanical actuator has the disadvantage of generating operating noise related to the friction of an outer surface of the input member and / or the output member against the internal friction surface of the drum housing.
    [0004] Undesired friction between the external surface of the input member and / or the output member and the internal friction surface of the drum housing during the rotational drive of the input member and or the member that is left inside the drum housing are caused by a misalignment of the input member and / or the output member with respect to the rotation axis of the spring brake .
    [0005] The friction between the external surface of the input member and / or the output member and the internal friction surface of the drum housing are generated by a contact of the metal constituting the input member and the body output, in particular zamac (acronym for the names of the metals that compose it: zinc, aluminum, magnesium and copper), with the metal constituting the drum, in particular a sintered steel.
    [0006] Therefore, such friction between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing affect the acoustic level of the electromechanical actuator during its operation. The present invention aims to solve the aforementioned drawbacks and to propose an electromechanical actuator provided with a spring brake for reducing the operating noise of the spring brake during the rotary drive of the input member and or the output member inside the drum housing. In this regard, the present invention aims, in a first aspect, an electromechanical actuator for a home automation system for closing or sun protection comprising an electric motor, a gear, a spring brake, said spring brake comprising: a coil spring; a drum, wherein the drum has a housing, and wherein an internal friction surface of the drum housing cooperates with at least one coil of the coil spring; an input member; an output member. According to the invention, the spring brake also comprises at least one ring disposed between an outer surface of the input member and / or the output member and the internal friction surface of the drum housing. Thus, said at least one ring disposed between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing reduces the operating noise of the spring brake when the rotational drive of the input member and / or the output member within the drum housing. In this way, said at least one ring makes it possible to dispense with operating noise of the spring brake associated with the friction of the external surface of the input member and / or of the output member against the internal surface of the spring. friction of the drum housing since the input member and / or the output member can no longer be in direct contact with the internal friction surface of the drum housing. Therefore, said at least one ring disposed between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing allows the sliding without direct contact of the body member. input and / or output member against the housing of the drum, during the rotational drive of the input member and / or the output member relative to the housing of the drum. In this way, said at least one ring disposed between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing serves as a bearing between the input member. and / or the output member and the housing of the drum. In addition, said at least one ring disposed between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing makes it possible to make up for misalignments of the input member and / or the output member relative to the axis of rotation of the spring brake, so as to avoid contacting the input member and the output member with the internal friction surface of the drum housing that can generate operating noise of the spring brake. In practice, said at least one ring is made of plastic. According to a preferred feature of the invention, the input member and / or the output member comprises a housing, and said at least one ring is disposed at said housing. Preferably, the housing of the input member and / or the output member is a shoulder, and said at least one ring is held in position along the axis of rotation of the spring brake between the shoulder of the input member and / or the output member and a shoulder of the drum. According to another preferred feature of the invention, said at least one ring has a thickness greater than the depth of the housing formed in the input member and / or in the output member, and one of the lateral faces of the the ring cooperates with the shoulder of the drum.
    [0007] According to another preferred feature of the invention, the drum, the input member and the output member are parts of revolution, and the outer diameter of said at least one ring is greater than the external diameters of the organ. input and output device. Practically, the input member and the output member are made of zamac and the drum is made of steel, in particular sintered steel. According to another preferred feature of the invention, the internal diameter of the drum housing at the internal friction surface of the drum housing is greater than the outer diameter of said at least one ring. 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. This home automation system has features and advantages similar to those described above in connection with the electromechanical actuator as mentioned above. Other features and advantages of the invention will become apparent in the description below. In the accompanying drawings, given by way of nonlimiting examples: FIG. 1 is a diagrammatic sectional view of a home automation installation 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 partial schematic sectional view of the home automation system illustrated in Figure 2 comprising an electromechanical actuator; Figure 4 is a schematic exploded view of a spring brake of the electromechanical actuator shown in Figure 3; Figure 5 is a schematic sectional view of the spring brake illustrated in Figure 4; Figure 6 is a schematic perspective view of the spring brake illustrated in Figures 4 and 5, wherein the drum of the spring brake has been removed; FIG. 7 is a diagrammatic front view of the spring brake as illustrated in FIG. 6. First of all, with reference to FIGS. 1 and 2, a home automation installation in accordance with the invention and installed in a building comprising an opening 1, window or door, equipped with a screen 2 belonging to a concealment device 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 concealment device 3 is wound on a winding tube 4 driven by a motorized drive mechanism 5 and movable between a wound position, particularly high, and a unwound position, particularly low. The motorized drive mechanism 5 comprises an electromechanical actuator 11, in particular of the tubular type, making it possible to rotate the winding tube 4 of the concealment device 3 so as to unroll or wind up the screen 2 of the device. occultation 3. In the mounted state, the electromechanical actuator 11 is inserted into the winding tube 4.
    [0008] The electromechanical actuator 11 comprises a housing 13, preferably of cylindrical shape. In known manner, a shutter 3 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 contiguous when the deck 2 of the shutter 3 reaches its low position unrolled.
    [0009] In the case of a shutter, the wound up position corresponds to the support of a final L-shaped end plate 8 of the deck 2 of the shutter 3 against an edge of a box 9 of the shutter 3, and the low position unrolled 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. The first blade of the shutter 3, opposite to the blade end, is connected to the winding tube 4 by means of at least one joint 10. The winding tube 4 is disposed inside the trunk 9 of the shutter 3. The apron 2 of the shutter 3 s it winds and unrolls around the winding tube 4 and is housed at least partly inside the trunk 9. The motorized drive mechanism 5 is controlled by a control unit. The control unit may be, for example, a local control unit 41, where the local control unit 41 may be wired or wirelessly connected to a central control unit 42. The central control unit 42 controls the control unit 41. local control unit 41, as well as other similar local control units distributed throughout 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 wind speed . A remote control 43, which may be a type of local control unit, and provided with a control keyboard, 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.
    [0010] The motorized drive mechanism 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 unit 43. electromechanical actuator 11 according to the invention, allowing the displacement of the screen 2 of the occulting device 3, are constituted by at least one electronic control unit 44. This electronic control unit 44 is able to put into operation a electric motor 12 of the electromechanical actuator 11, and in particular allow the electrical power supply of the electric motor 12. Thus, the electronic control unit 44 controls, in particular, the electric motor 12, so as to open or close the screen 2 as previously described.
    [0011] The electronic control unit 44 also includes an order receiving module, in particular radio orders issued by a command transmitter, such as the remote control 43 intended to control the electromechanical actuator 11. Of course, the module The receipt of orders may also allow the reception of orders transmitted by wire means. Here, and as illustrated in FIG. 2, the electronic control unit 44 is disposed inside the housing 13 of the electromechanical actuator 11. The control means of the electromechanical actuator 11 comprise material means and / or software.
    [0012] By way of non-limiting example, the hardware means may comprise at least one microcontroller. An electromechanical actuator according to an embodiment of the invention will now be described with reference to FIG. The electromechanical actuator 11 is supplied with electrical energy by the power supply network of the sector, or by means of a battery, which can be recharged for example by a photovoltaic panel. The electromechanical actuator 11 makes it possible to move the screen 2 of the concealment device 3. The mobile screen 2 of the concealment device 3 is a closure, concealment and / or sun protection screen, winding on the winding tube 4 whose inner diameter is substantially equivalent to the outer diameter of the electromechanical actuator 11, so that the electromechanical actuator 11 can be inserted into the winding tube 4 during assembly of the device occultation 3. In another embodiment not shown, the electromechanical actuator 11 is intended to be placed in a U-shaped rail.
    [0013] The winding tube 4 is rotated about an 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 11. The ring 18 thus makes it possible to achieve a step. The second pivot connection, not shown in Figure 3, is formed at a second end of the winding tube 4. The electromechanical actuator 11 comprises a torque support 19. The torque support 19 is projecting at a end 13a of the housing 13 of the electromechanical actuator 11, in particular the end 13a of the housing 13 receiving the ring 18.
    [0014] The torque support 19 of the electromechanical actuator 11 thus makes it possible to fix the electromechanical actuator 11 on a frame 20, in particular on a cheek of the box 9. In addition, the torque support 19 of the electromechanical actuator 11 can enable to close the end 13a of the housing 13.
    [0015] Furthermore, the torque support 19 of the electromechanical actuator 11 can support the electronic control unit 44. The electronic control unit 44 can be supplied with electrical energy by means of a connected power supply cable 21 electrically to the power supply mains, or to a battery.
    [0016] The electromechanical actuator 11 comprises an electric motor 12. The motor 12 comprises a rotor and a stator positioned coaxially around the axis of rotation X. The electromechanical actuator 11 comprises a gearbox 14. The gearbox 14 comprises at least one reduction stage. Said at least one reduction stage may be an epicyclic gear train. Of course, 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 with respect to the housing 13 of the electromechanical actuator 11, in particular with respect to an end 13b of the housing 13 being opposed to the end 13a of the casing 13. The output shaft 16 of the electromechanical actuator 11 rotates a connecting element 17 connected to the winding tube 4. The connecting element 17 is formed in the form of a wheel.
    [0017] When the electromechanical actuator 11 is put into operation, the electric motor 12 and the gearbox 14 rotate the output shaft 16. And the output shaft 16 of the electromechanical actuator 11 rotates the electromechanical actuator 11. winding 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.
    [0018] The electromechanical actuator 11 comprises a spring brake 15. The electric motor 12, the gearbox 14 and the spring brake 15 are mounted inside the housing 13 of the electromechanical actuator 11. In the embodiment illustrated in FIG. 3, the spring brake 15 is arranged between the electric motor 12 and the gearbox 14, that is to say at the output of the electric motor 12.
    [0019] In another embodiment, not shown, in which the gearbox 14 comprises a plurality of reduction stages, the spring brake 15 is arranged between two reduction stages of the gearbox 14. In another embodiment, not shown, the brake The spring 15 is disposed at the outlet of the gearbox 14. With reference to FIGS. 4 to 7, a spring brake of the electromechanical actuator 11 in accordance with one embodiment of the invention will now be described. The spring brake 15 comprises at least one helical spring 22, a drum 23, an input member 24 and an output member 25.
    [0020] The drum 23 is held in position in the housing 13 of the electromechanical actuator 11, in particular by means of ribs 28 formed on the outer periphery of the drum 23 cooperating with tongues (not shown) of a housing of the gearbox 14. And the housing of the gearbox 14 is held in position in the casing 13 of the electromechanical actuator 11.
    [0021] The drum 23 has a housing 26. Here, the housing 26 of the drum 23 is cylindrical. The coil spring 22, the input member 24 and the output member 25 are disposed inside the housing 26 of the drum 23. The output member 25 is disposed opposite the body entry 24.
    [0022] Here, the coil spring 22 has a plurality of turns. The turns of the coil spring 22 are centered on an axis coinciding with the axis of rotation X when the spring brake 15 is assembled and then mounted in the electromechanical actuator 11. Likewise, the input member 24 and the body 25 are centered on an axis coinciding with the axis of rotation X when the spring brake 15 is assembled and then mounted in the electromechanical actuator 11. An inner friction surface 27 of the housing 26 of the drum 23 cooperates with at least one turn of the helical spring 22. In this way, at least one coil of the coil spring 22 is radially constrained by the housing 26 of the drum 23. Here, the coil spring 22 is mounted tightly within the housing 26 of the drum 23, so as to frictionally fasten the coil spring 22 and the drum 23 when the coil spring 22 is at rest. Each end of the coil spring 22 forms a tab 29 extending radially or axially with respect to the axis of rotation X of the spring brake 15. Here, the coil spring 22 comprises two tabs 29, only one of which is visible in FIG. 4.
    [0023] In the embodiment illustrated in FIG. 4, the lugs 29 of the coil spring 22 extend radially with respect to the axis of rotation X of the spring brake 15 and towards the inside of the coil spring 22, in particular since the turns of the coil spring 22 towards the central axis of the coil spring 22.
    [0024] The input member 24 is rotated by the electric motor 12. Here, and as shown in Figures 4 to 7, the input member 24 comprises a shaft 37. The shaft 37 of the body input 24 allows to receive and transmit a torque from the electric motor 12. In the embodiment illustrated in Figures 4 and 5, the input member 24 comprises a drive tooth 31. The drive tooth 31 of the input member 24 is inserted inside the coil spring 22, when the spring brake 15 is assembled. The input member 24 also comprises a first plate 30. Here, the first plate 30 comprises the drive tooth 31. The drive tooth 31 of the input member 24 is disposed between the two tabs 29 of the coil spring 22 and cooperates with one or other of the lugs 29 of the coil spring 22, in the direction of rotation of the drive generated by the electric motor 12. The drive tooth 31 of the input member 24 comprises two driving faces 38. Each driving face 38 of the driving tooth 31 cooperates with a tab 29 of the coil spring 22.
    [0025] Here, and as illustrated in FIGS. 4 and 5, the coil spring 22 and the output member are held axially between the first plate 30 of the input member 24 and a second plate 32 of a hood 33. Here, and as illustrated in FIG. 4, the second plate 32 of the cover 33 comprises a spacer 34, arranged diametrically opposite the drive tooth 31 of the first plate 30 with respect to the axis rotation X when the spring brake 15 is assembled. The spacer 34 of the second plate 32 of the cover 33 thus makes it possible to maintain an axial separation between the first and second plates 30, 32. In another embodiment, not represented, the first plate 30 of the input member 24 can understand the spacer 34.
    [0026] Here and as illustrated in Figures 4 and 5, 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 one of the other along the axis of rotation X of the spring brake 15. The first and second plates 30, 32 are integral in rotation about the axis of rotation X of the spring brake 15.
    [0027] In one embodiment, the first and second plates 30, 32 can be held integral in rotation around the axis of rotation X of the spring brake 15 by simple interlocking. In another embodiment, the first and second trays 30, 32 can be held integral in rotation around the axis of rotation X of the spring brake 15 by fixing by means of a fastening element, such as a screw of fixation. The output member 25 is connected to the screen 2 of the concealment device 3. In the embodiment illustrated in FIGS. 4 and 5, the output member 25 comprises two ears 39. The ears 39 of the organ 25 are inserted inside the coil spring 22, when the spring brake 15 is assembled. The lugs 39 of the output member 25 respectively comprise a recess 40. The recess 40 of each of the lugs 39 of the output member 25 cooperates with one of the lugs 29 of the coil spring 22. The lugs 39 of the output member 25 further comprises respectively a projecting element 45. The projecting element 45 of each of the lugs 39 of the output member 25 extends along the axis of rotation X of the spring brake 15 , and in particular to the input member 24 when the spring brake 15 is assembled. The projecting element 45 of each of the lugs 39 of the output member 25 cooperates with a light 46 of the input member 24, when the spring brake 15 is assembled.
    [0028] In one embodiment, the peripheral face of the projecting element 45 of one of the ears 39 of the output member 25 can be brought into contact with the contour of the corresponding light 46 of the input member. 24 when one of the drive faces 38 of the drive tooth 31 of the input member 24 is in contact with the face of the corresponding lug 39 of the output member 25.
    [0029] Here, and as illustrated in Figures 4 and 5, the output member 25 is centered relative to the input member 24 by means of an axis 47. The axis 47 is inserted firstly into a bore 48 of the output member 25 and in a bore 49 of the input member 24. The input member 24, in particular the drive tooth 31, cooperates with at least one of the legs 29 of the coil spring 22 so as to rotate the helical spring 22 about the axis of rotation X of the spring brake 15 in a first direction of rotation. Such a movement releases the spring brake 15. And the friction force between at least one turn of the coil spring 22 and the internal friction surface 27 of the housing 26 of the drum 23 is decreased during the rotational drive of the coil spring. 22 in the first direction of rotation.
    [0030] In other words, 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 internal friction surface 27 of the housing 26 of the drum 23. Thus, 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, in particular one of the lugs 39, cooperates with at least one of the lugs 29 of the helical spring 22 so as to rotate the helical spring 22 about the axis of rotation X of the spring brake 15 in a second 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.
    [0031] And the friction force between at least one turn of the coil spring 22 and the internal friction 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. In other words, this movement tends to increase the diameter of the outer casing of the coil spring 22, in particular by bringing the tabs 29 of the coil spring 22 closer together, and thus to increase the radial stress between the coil spring 22 and the inner surface of the coil spring 22. friction 27 of the housing 26 of the drum 23. As illustrated in Figures 4 to 7, the spring brake 15 also comprises a ring 50 disposed between an outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23.
    [0032] Thus, the ring 50 disposed between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23 reduces the operating noise of the spring brake 15 during the drive. rotation of the input member 24 and / or the output member 25 inside the housing 26 of the drum 23.
    [0033] In this way, the ring 50 makes it possible to overcome the operating noise of the spring brake 15 linked to the friction of the outer surface 51 of the input member 24 against the internal friction surface 27 of the housing 26 of the drum 23. since the input member 24 can no longer be in direct contact with the internal friction surface 27 of the housing 26 of the drum 23, in a radial direction.
    [0034] Therefore, the ring 50 disposed between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23 allows the sliding without direct contact of the input member 24 against the housing 26 of the drum 23, during the rotational drive of the input member 24 relative to the housing 26 of the drum 23. In this way, the ring 50 disposed between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23 serves as a bearing between the input member 24 and the housing 26 of the drum 23. In addition, the ring 50 disposed between the outer surface 51 of the body of the input 24 and the internal friction surface 27 of the housing 26 of the drum 23 makes it possible to make up for the misalignment of the input member 24 and / or of the output member 25 with respect to the axis of rotation X spring brake 15, so as to avoid contacting the input member 24 and the body e outlet 25 with the internal friction surface 27 of the housing 26 of the drum 23 can generate operating noise of the spring brake 15. In another embodiment not shown, the spring brake 15 comprises a ring 50 disposed between a surface external 52 of the output member 25 and the internal friction surface 27 of the housing 26 of the drum 23 to replace the ring 50 disposed between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23. In a similar manner to the embodiment shown in Figures 4 to 7, the ring 50 disposed between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23 allows to reduce the operating noise of the spring brake 15 during the rotational drive of the input member 24 and / or the output member 25 inside the housing 26 of the drum 23. In this case , the ring 5 0 disposed between the outer surface 52 of the output member 25 and the internal friction surface 27 of the housing 26 of the drum 23 makes it possible to catch the misalignment of the output member 25 and / or the body input 24 relative to the axis of rotation X of the spring brake 15, so as to avoid contact between the input member 24 and the output member 25 with the internal friction surface 27 of the housing 26 of the drum 23 which can generate operating noise of the spring brake 15. In another embodiment not shown, the spring brake 15 comprises a first ring 50 disposed between an outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23, and a second ring 50 disposed between an outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23. In a manner similar to the two previous embodiments, the pr first and second rings 50 disposed respectively on the one hand between the outer surface 51 of the input member 24 and the inner friction surface 27 of the housing 26 of the drum 23, and on the other hand between the outer surface 52 of the output member 25 and the internal friction surface 27 of the housing 26 of the drum 23 make it possible to reduce the operating noise of the spring brake 15 during the rotational drive of the input member 24 and / or the output member 25 inside the housing 26 of the drum 23.
    [0035] In this case, the first and second rings 50 respectively arranged on the one hand between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23, and on the other hand between the outer surface 52 of the output member 25 and the internal friction surface 27 of the housing 26 of the drum 23 make it possible to make up for the misalignment of the input member 24 and the output member 25 with respect to the axis of rotation X of the spring brake 15 so as to avoid contact between the input member 24 and the output member 25 with the internal friction surface 27 of the housing 26 of the drum 23 which can generate In practice, whatever the embodiment, the ring 50 is made of plastic. Thus, the ring 50 disposed between the outer surface 51, 52 of the input member 24 and / or the output member 25 and the internal friction surface 27 of the housing 26 of the drum 23 allows for a bearing, so as to ensure the sliding between the input member 24 and / or the output member 25 and the drum 23 without direct contact, during the rotational drive of the input member 24 and / or the outlet member 25 relative to the housing 26 of the drum 23. By way of non-limiting example, the plastic material of the ring 50 may be polyoxymethylene or "POM". In one embodiment, the input member 24 and the output member 25 are made of zamac (acronym for the names of the metals that compose it: zinc, aluminum, magnesium and copper) and the drum 23 is made of steel , especially sintered steel. Thus, the use of the zamac to achieve the input member 24 and the output member 25 ensures a good accuracy of the dimensions of these parts during their manufacture. And the use of sintered steel to produce the drum 23 reduces the resistance to friction against the internal friction surface 27 of the housing 26 of the drum 23. Advantageously, the input member 24 comprises a housing 53, where the ring 50 is disposed at the housing 53.
    [0036] Thus, the ring 50 is positioned axially with respect to the input member 24 by means of the housing 53 along the axis of rotation X of the spring brake 15. Similarly, in the embodiment where the spring brake 15 comprises a ring 50 disposed between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23, the outlet member 25 comprises a not shown housing, where the ring 50 is arranged at the housing level. Preferably, the housing 53 or equivalent of the input member 24 and / or the output member 25 is a shoulder. In the embodiment illustrated in FIGS. 4 to 7, the ring 50 is held in position along the axis of rotation X of the spring brake 15 between the shoulder 53 of the input member 24 and a shoulder 54 of the drum. 23. Thus, the ring 50 is held in position along the axis of rotation X of the spring brake 15 between a first shoulder 53 of the input member 24 and a second shoulder 54 of the drum 23.
    [0037] Similarly, in the embodiment where the spring brake 15 comprises a ring 50 disposed between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23, the ring 50 is maintained in position along the axis of rotation X of the spring brake 15 between the shoulder of the outlet member 25 and a shoulder of the drum 23.
    [0038] Advantageously, the ring 50 has a thickness L1 greater than the depth L2 of the housing 53 formed in the input member 24, along the axis of rotation X of the spring brake 15. And one of the lateral faces of the ring 50 cooperates with the shoulder 54 of the drum 23, in particular with a lateral face of the shoulder 54 of the drum 23, the lateral face of the shoulder 54 of the drum 23 being orthogonal to the axis of rotation X of the spring brake 15. Thus, the exceeding of the thickness L1 of the ring 50 with respect to the depth L2 of the housing 53 formed in the input member 24 makes it possible to avoid direct contact between the input member 24 and the 23 in an axial direction, and therefore reduce the operating noise of the spring brake 15 during the rotational drive of the input member 24 within the housing 26 of the drum 23. In this way , the ring 50 makes it possible to overcome the operating noise of a spring brake 15 related to the friction of the outer surface of the first plate 30 of the input member 24 against the shoulder 54 of the drum 23 since the input member 24 can no longer be in direct contact with the shoulder 54 of the drum 23, in an axial direction. Therefore, the ring 50 disposed between the outer surface of the first plate 30 of the input member 24 and the shoulder 54 of the drum 23 also allows the sliding without direct contact of the input member 24 against the housing 26 of the drum 23, during the rotational drive of the input member 24 relative to the housing 26 of the drum 23. Similarly, in the embodiment where the spring brake 15 comprises a ring 50 disposed between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23, the ring 50 has a thickness greater than the depth of the housing formed in the outlet member 25, along the axis of rotation X of the spring brake 15. And one of the lateral faces of the ring 50 cooperates with the shoulder of the drum 23, in particular with a lateral face of the shoulder of the drum 23, the lateral face of the shoulder of the drum 23 being orthogonal to the axis of rotation X of the spring brake 15. Advantageously, the ring 50 comprises a rotational locking element 55. The rotational locking element 55 of the ring 50 cooperates with an opening 56 formed in the input member 24. Thus, the anti-rotation device of the ring 50 relative to the input member 24 prevents premature wear of the ring 50 due to friction of the ring 50 on the outer surface 51 of the body 24, in particular when the input member 24 is made of a material such as Zamac. Here, and as illustrated in FIGS. 4 to 7, the rotational locking element 55 of the ring 50 is a tongue extending from the ring constituting the ring 50 towards the center of the ring 50. And the opening 56 formed in the input member 24, in particular in the first plate 30, cooperates with the tongue forming the rotational locking element 55 of the ring 50. Similarly, in the embodiment where the brake with spring 15 comprises a ring 50 disposed between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23, the ring 50 comprises a rotational locking element not shown. The locking element in rotation of the ring 50 cooperates with an opening in the input member 25. Practically, the drum 23, the input member 24 and the output member 25 are parts of revolution .
    [0039] The outer diameter of the ring or rings 50 is greater than the external diameter of the inlet member 24 and the outer diameter of the outlet member 25. Thus, the ring or rings 50 disposed between the outer surface 51 of the input member 24 and the internal friction surface 27 of the housing 26 of the drum 23 and / or between the outer surface 52 of the outlet member 25 and the internal friction surface 27 of the housing 26 of the drum 23 make it possible to avoid the direct contact between the input member 24 and the housing 26 of the drum 23 and between the output member 25 and the housing 26 of the drum 23 by interposing the ring or rings 50 between them. In this way, the pivot connection between the input member 24 and the housing 26 of the drum 23 and between the output member 25 and the housing 26 of the drum 23 is implemented via the one or more rings 50, so as to guarantee a sliding limiting the operating noise of the spring brake 15 during the rotational drive of the input member 24 and / or the output member 25 inside the housing 23. In one embodiment, the internal diameter of the housing 26 of the drum 23 at the internal friction surface 27 of the housing 26 of the drum 23 is greater than the outside diameter of the ring or rings 50. Thus, the or the rings 50 can be mounted with a free fit inside the housing 26 of the drum 23. In another embodiment, the internal diameter of the housing 26 of the drum 23 at the internal friction surface 27 of the housing 26 of the drum 23 is smaller than the outer diameter of the ring or rings 50. Thus, the ring or rings 50 can be mounted with a tight fit inside the housing 26 of the drum 23. In this way, a play of operation of the spring brake 15 is eliminated.
    [0040] Therefore, the ring or rings 50 may be pre-mounted inside the housing 26 of the drum 23 so as to avoid the withdrawal of the ring 50 in the direction of the axis of rotation X of the spring brake 15. Through in the present invention, the ring or rings disposed between the outer surface of the input member and / or the output member and the internal friction surface of the drum housing can reduce the operating noise of the brake to spring during the rotational drive of the input member and / or the output member within the drum housing. Of course, many modifications can be made to the embodiments described above, without departing from the scope of the invention.
    [0041] In particular, the ring may be attached to or integral with the input member and / or the output member, particularly in the case of an electromechanical actuator having an electric motor providing a low torque. In such a case, the ring and the input member and / or the output member form a single subassembly or a single piece, for example plastic.
    [0042] The embodiments and variants mentioned above may be combined to generate new embodiments of the invention.
    权利要求:
    Claims (10)
    [0001]
    CLAIMS1- Electromechanical actuator (11) for a home automation closure or sun protection system comprising an electric motor (12), a gear (14), a spring brake (15), said spring brake (15) comprising: a spring helical (22); a drum (23), - where the drum (23) has a housing (26), and - where an internal friction surface (27) of the housing (26) of the drum (23) cooperates with at least one coil of the coil spring (22); an input member (24); an output member (25); characterized in that the spring brake (15) also comprises at least one ring (50) disposed between an outer surface (51, 52) of the input member (24) and / or the output member ( 25) and the internal friction surface (27) of the housing (26) of the drum (23).
    [0002]
    2- electromechanical actuator (11) for a home automation closure or sun protection system according to claim 1, characterized in that said at least one ring (50) is made of plastic.
    [0003]
    3- electromechanical actuator (11) for a home automation closure or sun protection system according to claim 1 or claim 2, characterized in that the input member (24) and / or the output member (25) comprises a housing (53), and in that said at least one ring (50) is disposed at said housing (53).
    [0004]
    4- Electromechanical actuator (11) for a home automation closure or sun protection system according to claim 3, characterized in that the housing (53) of the input member (24) and / or the output member (25) is a shoulder, and in that said at least one ring (50) is held in position along the axis of rotation (X) of the spring brake (15) between the shoulder (53) of the member inlet (24) and / or the outlet member (25) and a shoulder (54) of the drum (23).
    [0005]
    5- electromechanical actuator (11) for a home automation closure or sun protection system according to claim 4, characterized in that said at least one ring (50) has a thickness (L1) greater than the depth (L2) of the housing ( 53) formed in the input member (24) and / or in the output member (25) and in that one of the lateral faces of the ring (50) cooperates with the shoulder (54) of the drum (23).
    [0006]
    Electromechanical actuator (11) for a home automation closure or sun protection system according to any one of claims 1 to 5, characterized in that said at least one ring (50) comprises a locking element in rotation (55). , and in that the rotational locking element (55) of said at least one ring (50) cooperates with an opening (56) formed in the input member (24) and / or the output member (25).
    [0007]
    Electromechanical actuator (11) for a home-automation closure or sun protection system according to any one of claims 1 to 6, characterized in that the drum (23), the input member (24) and the output member (25) are parts of revolution, and in that the outer diameter of said at least one ring (50) is greater than the external diameters of the input member (24) and the output member (25).
    [0008]
    8- Electromechanical actuator (11) for a home automation closure or sun protection system according to any one of claims 1 to 7, characterized in that the input member (24) and the output member (25) are made of zamac and the drum (23) is made of steel, in particular sintered steel.
    [0009]
    9- electromechanical actuator (11) for a home automation closure or sun protection system according to any one of claims 1 to 8, characterized in that the internal diameter of the housing (26) of the drum (23) at the surface internal friction (27) of the housing (26) of the drum (23) is greater than the outer diameter of said at least one ring (50).
    [0010]
    Home automation system for closing or sun protection comprising a screen (2) windable on a winding tube (4) rotated by an electromechanical actuator (11), characterized in that the electromechanical actuator (11) is in compliance in any one of claims 1 to 9.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN105178836A|2015-12-23|
    CN105178836B|2018-07-03|
    PL2957705T3|2017-07-31|
    FR3022289B1|2016-06-03|
    EP2957705A1|2015-12-23|
    EP2957705B1|2016-12-28|
    US20150364969A1|2015-12-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2610668A1|1987-02-09|1988-08-12|Feller Samuel|BRAKE REDUCER, PARTICULARLY FOR THE OPERATION OF ROLLING SHUTTERS AND THE LIKE|
    EP0810347A1|1996-05-28|1997-12-03|Somfy|Reduction gearing with oldham coupling|
    EP2267330A1|2009-06-23|2010-12-29|Somfy SAS|Electric actuator for driving a home automation screen|
    FR2995001A1|2012-09-05|2014-03-07|Somfy Sas|ELECTROMECHANICAL ACTUATOR FOR DRIVING A DOMOTIC SCREEN|
    US2673730A|1948-10-28|1954-03-30|Hupp Arleigh Glynn|Spring for spring clutches|
    US4579201A|1983-05-16|1986-04-01|Curtiss Wright Flight Systems, Inc.|Bidirectional, torque-limiting, no-back clutch mechanism|
    CN2151241Y|1992-09-11|1993-12-29|黄狮|Locking gear for electric rolling shutter|
    CN2642980Y|2003-08-30|2004-09-22|朱明龙|Transmission device for electric rolling screen door|
    US7863791B2|2007-10-26|2011-01-04|The Bergquist Torrington Company|Device and method for assembling electric motor|
    CN202280414U|2011-10-18|2012-06-20|添成金属股份有限公司|Brake improving device of electric door roller|CN105489123A|2016-01-04|2016-04-13|京东方科技集团股份有限公司|Display device|
    USD797060S1|2016-09-28|2017-09-12|AXIS Labs, Inc.|Lift-control device for window coverings|
    US11072976B2|2017-02-06|2021-07-27|Hunter Douglas, Inc.|Methods and apparatus to reduce noise in motor assemblies|
    FR3065250B1|2017-04-14|2019-07-05|Somfy Sas|METHODS OF MANUFACTURING A DRUM AND SPRING BRAKE OF AN ELECTROMECHANICAL ACTUATOR, ELECTROMECHANICAL ACTUATOR AND DOMOTIC INSTALLATION|
    FR3072116B1|2017-10-10|2019-11-08|Somfy Activites Sa|TUBULAR ELECTROMECHANICAL ACTUATOR AND DOMOTIC INSTALLATION COMPRISING SUCH ACTUATOR|
    FR3074516B1|2017-12-01|2019-11-22|Somfy Activites Sa|ELECTROMECHANICAL ACTUATOR AND DOMOTIC INSTALLATION COMPRISING SUCH ACTUATOR|
    FR3084690B1|2018-08-01|2020-10-23|Somfy Activites Sa|MECHANICAL VIBRATION FILTERING MODULE, ELECTROMECHANICAL ACTUATOR INCLUDING SUCH A MECHANICAL VIBRATION FILTERING MODULE AND CLOSING, OCCULTATION OR SOLAR PROTECTION INSTALLATION INCLUDING SUCH AN ELECTROMECHANICAL ACTUATOR|
    FR3087817B1|2018-10-26|2020-11-13|Somfy Activites Sa|ELECTROMECHANICAL ACTUATOR AND HOME AUTOMATION SYSTEM INCLUDING SUCH AN ACTUATOR|
    法律状态:
    2015-06-09| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-18| PLSC| Search report ready|Effective date: 20151218 |
    2016-06-07| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-16| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455553A|FR3022289B1|2014-06-17|2014-06-17|ELECTROMECHANICAL ACTUATOR AND DOMOTIC INSTALLATION COMPRISING SUCH ACTUATOR|FR1455553A| FR3022289B1|2014-06-17|2014-06-17|ELECTROMECHANICAL ACTUATOR AND DOMOTIC INSTALLATION COMPRISING SUCH ACTUATOR|
    US14/739,001| US20150364969A1|2014-06-17|2015-06-15|Electromechanical actuator and home automation installation comprising such an actuator|
    CN201510331059.3A| CN105178836B|2014-06-17|2015-06-16|Electromechanical actuator and the home automation device with this driver|
    EP15172240.2A| EP2957705B1|2014-06-17|2015-06-16|Electromechanical actuator and home automation equipment comprising such an actuator|
    PL15172240T| PL2957705T3|2014-06-17|2015-06-16|Electromechanical actuator and home automation equipment comprising such an actuator|
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