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
  • E06B9/68—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
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/08—Roll-type closures
  • E06B9/11—Roller shutters
  • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
  • E06B9/174—Bearings specially adapted therefor

Definitions

• the present invention relates to a device for driving in rotation and supporting a winding tube of a mobile screen used in a home automation system, such as a shutter or blind.
• the invention also relates to a home automation installation comprising such a device.
• the patent application FR 2 887 577 describes a tip or rolling body fixed on a shoulder formed at each end of the tube so as not to exceed the diameter of the latter and be in alignment with its generators .
• this application proposes a solution for improving the winding of the blades around the tube by virtue of this alignment of the generatrices which form a continuous zone of support of the blades.
• This induces the realization of a shoulder at each end of the tube, which is a costly operation and not always feasible.
• Many tubes are profiles whose section does not make this shoulder, for example polygonal.
• the length of the tube must be, preferably, adjusted to the width of the screen.
• the width may be smaller than the length of the part of the tubular actuator inserted in the tube to which is added the minimum length of fitting of the tip.
• the tube can be motorized differently. Power management can be achieved by an independent board.
• the actuator can be fully housed in the cheek. For this, it is necessary that the installation allows to house the outsourced part, which, generally, is not the case for these screens of small width.
• the invention more particularly intends to remedy by proposing a device for driving in rotation and for supporting a winding tube which has a great axial compactness and which is suitable for controlling the movement of a screen of small width.
• the invention relates to a device for driving in rotation and for supporting a winding tube of a mobile screen, this device comprising a tubular actuator equipped with an output shaft, the actuator being inserted in the winding tube through a first end of this tube and adapted to drive in rotation the winding tube through the output shaft, and a support endpiece for the tube equipped with the actuator .
• This device is characterized in that at least one overlapping portion of the nozzle extends axially, from the second end of the tube and towards its first end, to the level of at least a portion of the nozzle. output shaft.
• the overlapping portion of the nozzle is a part that extends from a wall of the nozzle closing the tube, to come in total or partial recovery of the output shaft of the actuator.
• This overlap can take place by the outside of a drive wheel, that is to say around the wheel, or through it.
• a gain in length of the device of the invention is obtained because a portion of the nozzle is at the same axial level as a portion of the shaft driven by the tubular actuator. A zone of overlap is obtained between these two parts.
• the tip contributes to the transmission of the forces exerted on the tube towards the frame and more particularly, the recovery of the weight of the deck.
• the tip must therefore be integral with the tube, which requires a minimum length fitting or covering the overlapping portion of the tip with the tube.
• the length of the equipped tube can be decreased by precious few centimeters.
• the invention is of primary interest when the width of the motorized screen is less than the length resulting from the sum of the length of the portion of the actuator inserted in the tube with the minimum length of the overlapping portion of the mouthpiece. . This dimension delimits the term "small length" previously defined.
• the tip is advantageously provided with a pin, belonging to a support bearing of the winding shaft.
• the output shaft of the actuator is integral in rotation with the winding tube via a drive wheel.
• the overlapping portion of the nozzle advantageously extends inside the tube to the level of the drive wheel which it partially overlaps.
• the tip does not disturb the winding of the screen around the tube whose outer shapes are optimized for this purpose.
• the drive wheel defines an at least partial receiving space of the overlapping portion of the endpiece.
• this reception space is delimited between radially protruding reliefs of the wheel which are in engagement with the inner surface of the winding tube.
• this space is formed by an orifice formed in the thickness of the wheel.
• Part of the tip overlaps at least a portion of the wheel. This must therefore allow this overlap. It is therefore provided, facing the overlapping portions of the nozzle, reception spaces of these overlapping parts.
• the output shaft is integral in rotation with the winding tube through the nozzle.
• the drive wheel and the aforementioned tip form a single piece.
• this solution offers a reinforced tip allowing a good transmission of the force and a good alignment of the winding axis, between the axis of the actuator and the axis. winding tube.
• the tip covers the outside of the tube.
• This solution is adapted to the tube whose inner dimensions are reduced, not allowing the use of drive wheels provided with receiving spaces.
• the overlapping portion resumes the outer shape of the tube. This solution easily adapts to a tube, of standard profile type, cut to the desired length.
• the overlapping portions of the tip may also be disposed in longitudinal, internal and / or external grooves of the tube. If the dimensions allow, the overlapping portion or portions disposed in the outer grooves of the tube do not radially exceed the inscribed outer diameter of the winding tube, which makes it possible not to disturb the winding of the screen.
• the tip is integral in rotation of the tube.
• the invention also relates to a home automation installation which comprises, inter alia, a device as mentioned above for driving in rotation and the support of its winding shaft.
• FIG. 1 is a sectional view of a shutter according to the prior art
• FIG. 2 is an exploded view of a winding tube equipped with a device according to a first embodiment of the invention
• FIG. 3 is a partial section of the tube of Figure 1 in assembled configuration
• FIG. 4 is a section along the line A-A in Figure 3 without the actuator; the section line of FIG. 3 has been brought to B-B;
• Figure 5 is a section similar to Figure 4 for a second embodiment
• FIG. 6 is a sectional view of the assembly of a device according to a third embodiment of the invention.
• FIG. 7 is a sectional view of the assembly of a device according to a fourth embodiment of the invention.
• FIG. 8 is an exploded view of a winding tube equipped with a device according to a fifth embodiment of the invention.
• - Figure 9 is a partial section similar to Figure 3 for the embodiment of Figure 8;
• FIG. 10 is a section along the line C-C in Figure 9 without the actuator; the cut line of FIG. 9 has been brought to D-D.
• the invention is applicable to different types of roll-up screens.
• the illustration described below corresponds to a type of screen, namely shutters.
• This example is of course nonlimiting, the invention can be adapted to other types of screens, including blinds.
• Figure 1 shows a motorized roller shutter 1 as it is known to assemble.
• the blades 3 of the apron 2 wind around a tube 10.
• the tube is rotated by a tubular actuator 20, fixed on a frame 60.
• a tubular actuator generally comprises a tube into which are inserted a geared motor of a side and a power control unit of the gearmotor at the other end.
• the gearmotor ends with an output shaft projecting from the actuator tube.
• the output shaft 21 of the actuator transmits a motor torque to a drive wheel 30 integral with the tube.
• the first bearing is made by means of a ring 40, integral with the tube and free to rotate around the tubular body of the actuator.
• the bearing is formed by means of a tip 50, a part of which is fitted inside the tube over a lap length L e .
• the tip is provided with a pin 51 centered on the axis XX 'and projecting from the end of the tube.
• the pin is inserted in a bearing 63 disposed inside a housing 62 of the frame 61. It is noted that the length of the tube L t must be greater than the sum of the length of the part of the actuator inserted in the tube L 3 with the overlap length L e .
• a tubular actuator 120 equipped with a driving wheel 130 and a ring gear 140 is inserted into a tube 110 with a polygonal section by a first end, 111 of this tube, in the direction of the arrow F 1 in Figure 2.
• the wheel 130 which is mounted on the output shaft 121 of the actuator 120, is used to drive the shaft 110 in rotation around its longitudinal axis XX 'in which takes place the insertion of the actuator 120.
• the tube 110 rotates about the axis XX' during use of the installation comprising the actuator 120, because the shaft output 121 drives the tube 110 via the wheel 130.
• a tip 150 is then fitted inside the tube, in the direction of the arrow F 2 which is opposite to that of the arrow Fi.
• the tip comprises a disk-shaped wall 152 from which a centering and supporting pin 151 protrudes. This peg plays the role of a bearing part as the counter 51 of the prior art.
• lugs 153 extend axially towards the tube 110. They are arranged in such a way that the radial dimension of their external faces 154, that is to say the radial distance between these faces and the axis X-X 'is substantially equal to the radial dimension of the complementary inner faces 114 of the tube.
• the tabs 153 rest on the faces 114 once the tip 150 fitted into the tube. These are the tabs 153 which secure the tip with the tube and allow the transmission of force to the frame.
• the axial stop of the nozzle in the tube is obtained by contact between the end 112 of the tube with a corresponding outer radial edge 155 of the wall 152.
• the wheel 130 includes teeth 132 which extend radially outwardly from a hub 131 and engage the inner surface of the tube 110 to rotate it about the X-X axis. . Spaces E 130 are delimited between the teeth 132, with a generally triangular section when the wheel 130 is engaged in the tube 110.
• the tabs 153 of the endpiece 150 overlap the wheel 130 by being engaged in the tube 110 inside the spaces E 130 .
• the tabs 153 extend axially along the axis X-X 'from the wall 152 and up to the level of the wheel 130 in the mounted configuration of the actuator 120 and the tip 150 relative to the tube 110.
• the tabs 153 also overlap this shaft.
• the tabs 153 overlap the wheel 130, over its entire width and protrude towards the end 111.
• the tabs 153 could be shorter and overlap only a portion of the wheel 130.
• the tabs 153 are also in contact with at least one of the faces of the spaces E 130 delimited by the teeth 132. According to the embodiment described, this contact is made by the ribs 156 in one piece with the tabs 153 and which bear against the connecting region 133 between two adjacent teeth 132 in the part Ei spaces 30 radially closest to the axis X-X ', the area 133 of junction between two teeth 132 being formed by a portion of Hub 131.
• the wheel 130, the tube 110 and the end piece 150 are joined in rotation and form a rigid subassembly.
• the axis of rotation XX 'of the tube is materialized by the direct alignment of the associated actuator with the tip. The unbalance effect can thus be limited.
• FIG. 5 A second embodiment is shown in FIG. 5. Lugs 253 of a not shown end-piece are engaged in corresponding receiving spaces E230 formed in a wheel 230.
• the spaces E230 are formed by circular-section orifices pierced according to FIG. the thickness of the wheel 230, while the tabs 253 "overlap" the wheel 230 in that they extend axially to it. There is no contact between the tabs 253 and the winding tube 210.
• This solution makes it possible not to be dependent on the profile of the winding tube.
• the tip may be standard for tubes having different profiles. Only the drive wheel, which forms the interface with the tabs 253 of the nozzle, must be adapted to the section of the tube 240.
• a third embodiment of the invention is to assemble a single piece 350 combining the functions of the wheel and the tip of the first embodiment.
• This wheel tip 350 is mounted on the output shaft 321 of the actuator 320.
• An overlapping portion 353 of the tip 350 thus partially covers the output shaft 321.
• the overlap zone Z R of the shaft 321 by the wheel end 350 is delimited axially by the depth of a housing formed in the part 350, in the center of an annular flange 353 which forms the overlapping portion, to receive the free end of the shaft 321.
• the entire shaft 321 protruding from the actuator 320 can be received in this housing.
• the wheel-bit 350 then axially covers the entire shaft 321.
• the internal geometry of the annular flange 353 is adapted to the geometry of the shaft 321 to allow efficient torque transmission between the actuator 320 and the tube 310. If the shaft 321 is a star or polygonal section, the section internal of the collar is also in star or polygonal.
• the wheel end 350 also comprises outer shapes interfacing with the inner profile of the tube 310 so as to make these two parts integral in rotation.
• this hub-wheel 350 provides the bearing function with the frame no shown, thanks to a pin 351 extending axially with respect to the wheel end outside the tube 310.
• This variant induces the constraint that the tube 310 must have a specific length LT3, preferably slightly greater than a characteristic length LA3 of the actuator equipped with this wheel-end.
• This characteristic length LA3 corresponds to the length between the base of the crown 340 against which the tube 310 rests against the wall of the wheel endpiece 350 from which the pin 351 extends.
• the wheel end 350 is first assembled on the actuator 320. The latter is then inserted into the tube 310 by one of its ends 311. The tube 310 has previously been cut to length LT3 so that the bearing portion the wheel end protrudes from the tube. The wheel end is not stopped axially.
• a fourth embodiment shown in FIG. 7, consists in inserting a wheel end 450 through a first end 412 of the tube 410 until a collar 459 of the wheel end presses against the end of the tube. .
• the wheel end 450 comprises external shapes interfering with the inner profile of the tube 410, so as to make these two parts integral in rotation, and a pin 451 providing the bearing function with the frame not shown.
• the actuator 420 is then inserted by the other end 411. The actuator must be angularly indexed so that its output shaft 421 interfaces with complementary torque recovery forms of an interface housing 458.
• the housing 452 is delimited by an annular flange 453 which surrounds the shaft 421, that is to say the axially overlaps, in the mounted configuration of the device.
• the tube 410 has also been previously cut to length so that, once the actuator 420 and the wheel-bit 450 assembled, the interface between the output shaft and the wheel-end is sufficient to transmit the driving torque. and ensure the rigidity of the subset.
• an overlapping portion of the tip 450 which is formed by the flange 453, at least partially overlaps the output shaft 421.
• the internal geometry of the flange 453 is adapted to the geometry of the shaft 451.
• FIGS. 8 to 10 Another embodiment, shown in FIGS. 8 to 10, is used.
• An actuator 520 equipped with an output shaft 521 and a drive wheel 530 is inserted into a winding tube 510 in a conventional manner.
• a tip 550 is fitted on the outside of the tube.
• the tip 550 comprises a disk-shaped wall 552 from which a centering and support pin 551 projects.
• an overlapping portion 553 extends axially towards the tube and surrounds the tube. tube in mounted configuration of the device.
• the overlapping portion 553 is arranged so that the radial dimension of a portion of its inner faces 554 is substantially equal to the radial dimension of the complementary external faces 514 of the tube.
• this overlapping portion forms a closed ring surrounding the tube.
• the overlapping portion is rigid and allows good weight transmission to the frame of the installation.
• the ring formed by the overlapping portion 553 must however be thin in order not to penalize the winding of the screen on the tube 510.
• the internal profile of the overlapping portion 553 can reproduce the external profile of the tube 510, which allows to make the end piece 550 and the tube 510 integral in rotation and to increase the number of radial bearing surfaces.
• the tube 510 is equipped with longitudinal grooves 516 in which are engaged ribs 557 which belong to the overlapping part 553.
• the axial stop of the end piece 550 is obtained by contact between the end 512 of the tube with the corresponding outer radial edge 555 of the wall 552.
• the overlapping portion 553 extends axially from the end 512 and towards the opposite end through which the actuator 520 has been inserted into the tube 510, until 5 to surround the drive wheel 530 of the shaft 510 which itself surrounds the shaft 521 is integral in rotation with this shaft.
• the overlapping portion 553 surrounds the wheel 530 over the entire axial length and protrudes from it, also covering a portion of the actuator 520. This is not mandatory and the overlap portion 553 could axially overlap only a portion of the wheel 530.
• the overlapping portion 553 is housed in longitudinal grooves of the tube section.
• the overlapping portion may therefore consist of several legs engaging in these grooves. The holding of the tip is less good than in the embodiment shown in Figures 2 to 10 but the winding of the screen is improved because the overlapping portion does not radially exceed the inscribed outer diameter of the winding tube.
• the invention also covers the end pieces provided with a housing in which a pin connected to the frame is inserted, which can be arranged on a cheek, for example.
• the pin and the housing form the support bearing of the tube. This arrangement corresponds to the configuration opposite to that illustrated in the previous embodiments.
• the various embodiments of the invention mentioned above can be implemented in a home automation installation, in particular a shutter, a blind or other similar screens, being arranged between two parts of a frame, as mentioned above. above in the state of the art, with reference to FIG. 1.
• the axial length of the winding tube can be reduced in view of the small axial space requirement of the rotation and support drive device. according to the invention.

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
• Manufacture Of Motors, Generators (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=39493883

Family Applications (1)

Country Status (7)

Families Citing this family (7)

Family Cites Families (10)

• 2007
  • 2007-09-20 FR FR0757692A patent/FR2921403B1/fr active Active
• 2008
  • 2008-09-19 EP EP08837214.9A patent/EP2191093B1/de not_active Not-in-force
  • 2008-09-19 CN CN2008801080260A patent/CN101815841B/zh not_active Expired - Fee Related
  • 2008-09-19 PL PL08837214T patent/PL2191093T3/pl unknown
  • 2008-09-19 WO PCT/FR2008/051681 patent/WO2009047458A2/fr active Application Filing
  • 2008-09-19 RU RU2010115336/03A patent/RU2475616C2/ru not_active IP Right Cessation
  • 2008-09-19 JP JP2010525408A patent/JP5469067B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

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