EP3902971A1 - Système d'entrainement en rotation d'un organe d'enroulement d'un tablier d'écran de fermeture enroulable - Google Patents
Système d'entrainement en rotation d'un organe d'enroulement d'un tablier d'écran de fermeture enroulableInfo
- Publication number
- EP3902971A1 EP3902971A1 EP19829624.6A EP19829624A EP3902971A1 EP 3902971 A1 EP3902971 A1 EP 3902971A1 EP 19829624 A EP19829624 A EP 19829624A EP 3902971 A1 EP3902971 A1 EP 3902971A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- main shaft
- spring
- rotation
- drive system
- rotary element
- 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
- 238000004804 winding Methods 0.000 title claims abstract description 33
- 230000000295 complement effect Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims 1
- 230000036316 preload Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- E06B9/74—Operating devices or mechanisms, e.g. with electric drive adapted for selective electrical or manual operation
-
- 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
- E06B9/60—Spring drums operated only by closure members
Definitions
- TITLE Rotary drive system for a winding member of a windable closing screen apron
- a roller shutter or door comprises a winding member, such as a winding tube, on which a flexible apron is fixed, such as an apron formed by blades hinged together.
- An electric motor drives the drum in rotation to open or close the shutter or door.
- Disengageable pre-stressed spring systems allow the energy stored by the pre-stressed spring to be restored to raise the deck. Once the spring has restored its energy, the spring must be prestressed again by operating a certain number of turns before resetting the disengageable system.
- the objective of the invention is to provide a new drive system in which the spring preload is obtained in a simple and precise manner.
- the invention relates to a system for driving in rotation a member for winding a closing screen apron which can be wound around a central axis.
- This system comprises an actuator driving an output shaft, a main shaft driven by the output shaft, a rotary element movable in rotation and fixed in translation relative to the main shaft, and integral in rotation with the member winding.
- This system also comprises at least one torsion spring fixed, at one of its ends, to the main shaft, and at its other end, to the rotary element, as well as a disengageable device which, in a clutched configuration , makes the main shaft and the rotary element integral in rotation, and in a disengaged configuration, disconnects the main shaft and the rotary element in rotation.
- the torsion spring In the disengaged configuration, the torsion spring is able to be prestressed by a relative rotation between the main shaft and the rotary element, and the previously prestressed torsion spring drives the rotary element in rotation around the central axis of such so that the deck is driven to a rolled up configuration.
- the system further comprises a threaded rod integral in rotation with the main shaft and a slider screwed onto the threaded rod and fixed in rotation relative to the winding member so that the slider is movable in translation according to the central axis of the system between a first position, in which the spring is not prestressed and the actuator is free to prestress the spring by free rotation between the main shaft and the rotary element, and a second position, in which the spring is prestressed and the cursor is in abutment against an element secured to the main shaft so that the actuator is automatically stopped.
- the spring preload is carried out in disengaged mode in a precise and simple manner, the movable cursor allowing the engine to stop once the correct number of revolutions has been reached by the simple detection of a peak. torque following the arrival of the cursor at the stop.
- such a drive system can incorporate one or more of the following characteristics, taken in any technically admissible combinations:
- the system comprises a ring forming the element integral with the main shaft, fixed to the output shaft of the actuator and to which a first end of the threaded rod is fixed.
- the system includes a ring fixed to the main shaft and on which the spring is fixed and a second end of the threaded rod.
- the system comprises forms of net stop provided in a complementary manner on the slider and on the ring fixed to the first end of the threaded rod and / or on the slider and on the ring fixed a second end of the threaded rod.
- the system includes means for damping the cursor stop against the element secured to the main shaft.
- the spring cooperates with a conical core.
- the system includes a suitable means of control to signal that the spring is armed and ready to operate.
- the system includes a safety system to prohibit the operation of the deck as long as the spring remains disarmed.
- the system includes a means of control making it possible to prove that the release of the spring worked.
- the cursor and the winding member have a complementary geometry allowing the translation of the cursor relative to the winding member along the central axis of the system and the rotation blocking of the cursor relative to the member of winding along the central axis.
- Figure 2 shows in schematic view the drive system of Figure 1 in a disengaged configuration
- FIG 3 is a perspective view of the drive system of Figures 1 and 2;
- Figure 5 is a side view of part of the drive system in a free state of a spring of the system
- Figure 6 is a view similar to Figure 5 in a pre-stressed state of the spring.
- FIGS. 1 to 6 represent a drive system 1 comprising an actuator 3 having an output shaft 5.
- the output shaft 5 defines a central axis X of the drive system 1.
- the actuator 3 can be an electric motor, a winch, etc.
- the drive system 1 comprises a rotary element 9 in pivot connection with the main shaft 7.
- the rotary element 9 is axially fixed on the main shaft 7.
- the rotary element 9 is integral in rotation with a winding member of a windable closing screen apron.
- the rotary element 9 is connected to a winding tube 1 1 forming the winding member, around which are wound blades of the deck.
- the winding tube 1 1 is formed by a hollow cylinder centered on the central axis X and in which are mounted the actuator 3, the output shaft 5, the main shaft 7 and the rotary element 9.
- This disengageable device 2 comprises a member 13 movable in translation on the main shaft 7 and relative to the rotary element 9.
- the member 13 is integral in rotation with the main shaft 7.
- the main shaft 7 having a profile circular making joining in rotation by direct mounting impossible
- the drive system 1 comprises an intermediate part 15 provided between the main shaft 7 and the member 13.
- the intermediate part 15 transmits the rotational movements of the actuator 3 to the member 13 leaving it the possibility of translation along the axis X.
- the intermediate piece 15 has for example a non-circular external profile, complementary to a non-circular profile provided on the inside of the member 13. Thus, the rotation of the intermediate piece 15 is transmitted to the member 13, while allowing the relative translation of these two parts.
- the disengageable device 2 comprises disengageable connecting means provided on the rotary element 9 and the member 13 which allow them to engage or disengage according to the axial position of the member 13.
- the rotary element 9 is equipped first rotational coupling means 92, and the member 13 comprises second rotary coupling means 132.
- the rotary coupling means 92 and 132 are formed by complementary shapes, such as teeth or grooves . In this example, the shapes are alternately projecting reliefs and recesses circumferentially visible in FIG. 3 forming, in the coupled configuration, rotational stops. Any other form can be considered.
- the first and second coupling means in rotation can be formed by a friction clutch system.
- the coupling means 92 are engaged with the coupling means 132, causing the member 13 to rotate in rotation with the rotary element 9.
- the coupling means 92 are in a second remote position and are no longer engaged with the coupling means 132, causing a separation in rotation of the member 13 with the rotary element 9.
- the member 13 has undergone a translation along the axis X opposite the rotary element 9 between a first close position and a second distant position.
- the drive system 1 also includes a control connected to the member 13, and adapted to move the member 13 to its disengaged configuration, against the force of the spring 19.
- this control can be provided in the form of a cable 21 actuable by a user, and connected to the member 13 by a connecting piece 23. When the cable 21 is pulled, the member 13 is moved away from the rotary element 9, which l 'leads to its disengaged configuration.
- the drive system 1 comprises at least one torsion spring 25 which drives the rotary element 9 in rotation about the central axis X so that the deck be driven to a rolled up configuration.
- the purpose of this torsion spring 25 is to provide a return torque on the bulkhead to its wound position in an emergency if the actuator 3 is inoperative.
- the torsion spring 25 is interposed between the main shaft 7 and the rotary element 9. In other words, the torsion spring 25 is arranged in series between the actuator 3 and the winding tube 1 1.
- L actuator 3 drives the main shaft 7, which drives the torsion spring 25, which drives the rotary element 9, which drives the winding tube 11.
- the torsion spring 25 comprises a first end 250 fixed to the main shaft 7, and a second end 252 fixed to the rotary element 9.
- the first end 250 and the second end 252 can be fixed respectively to the main shaft 7 and to the rotary element 9 by any suitable means, for example screws.
- the torsion spring 25 stores energy and can deliver sufficient torque to raise the deck when the need arises.
- the spring 25 is able to be prestressed by a relative rotation between the main shaft 7 and the rotary element 9.
- the spring 25 in an unsolicited or free state, the spring 25 cannot generate a relative rotation of the main shaft 7 and of the rotary element 9, but when a rotation between the main shaft 7 and the rotary element 9 is applied, the spring 25 is in a stressed state , or prestressed. In this state, it undergoes an internal stress which tends to exert a relative rotation between the main shaft 7 and the rotary element 9 relative to each other, so that the deck is raised.
- the operation of the drive system 1 is as follows. In normal operating configuration, the rotary element 9 and the member 13 are in the engaged configuration. The torque generated by the actuator 3 is transmitted to the main shaft 7 which transmits it to the member 13 then finally it passes from the member 13 to the rotary element 9 thanks to the disengageable connection means 92 and 132. The torque of the actuator 3 is found at the level of the rotary element 9. The pre-stressed torsion spring 25 keeps the rotary element 9 under tension, which, once released, will be driven in rotation, then will drive the winding tube 1 1. But as long as the member 13 and the rotary element 9 are engaged, the torsion spring 25 cannot release its energy.
- the spring 19 pushes the member 13 against the rotary element 9 so that the disengageable connecting means couple again.
- the two ends 250 and 252 of the torsion spring 25 are found fixed relative to the main shaft 7, the rotary element 9 can only be set in motion by the actuator 3. We find the engaged configuration.
- This end-of-stroke device comprises a threaded rod 27 integral in rotation with the main shaft 7 and a slider 29 screwed in helical connection to the threaded rod 27 and fixed in rotation relative to the winding member 1 1, such that the cursor 29 is movable in translation along the central axis X of the system 1.
- the cursor 29 is movable between a first position, represented in FIG. 5, in which the spring 25 is not prestressed and the actuator 3 is free to prestress the spring 25 by free rotation between the main shaft 7 and the rotary element 9, and a second position, shown in FIG. 6, in which the spring 25 is prestressed and the slider 29 abuts against an element secured to the main shaft 7 so that the actuator 3 is automatically stopped .
- the system 1 comprises a ring 31 fixed to the output shaft 5 of the actuator 3 and to which a first end 270 of the threaded rod 27 is fixed.
- the system 1 also comprises a ring 33 fixed to the main shaft 7 and on which are fixed the spring 25 and a second end 272 of the threaded rod 27.
- the ring 31 is also integral with main tree 7.
- the operation of the drive system 1 during the resetting of the spring 25 is as follows. In the disengaged configuration, following the operation of the control 21, the spring 25 released its energy to reassemble the roller shutter deck. To reset the spring 25, or in other words, prestress it, it is necessary to apply to it a certain angle of rotation, equivalent to a given number of turns of the actuator 3. The flap and therefore the tube 1 1 and the rotary element 9 being in a locked position due to the raised configuration of the shutter, it is necessary to subject the main shaft 7 to a rotation to reset the spring 25, before returning the system 1 to the engaged configuration.
- the prestressing of the spring 25 is then obtained, and the system 1 can be returned to the engaged configuration.
- the pretension of the spring 25 can be predefined by choosing one or more of the following parameters:
- the system 1 comprises forms of net stop provided in a complementary manner on the slider 29 and on the ring 31.
- These forms can be, for example, abutment surfaces 310 and 292 provided respectively on the ring 31 and the cursor 29.
- These surfaces 310 and 292 are plane and oriented along a plane comprising the main axis X.
- similar stop surfaces 330 and 290 can be provided on the ring 33 and on the cursor 29 respectively.
- the translation of the slider 29 relative to the winding tube 1 1 along the central axis X and the rotation lock of the slider 29 relative to the winding tube 1 1 can be obtained by a non-circular external shape of the cursor 29, and an internal non-circular shape complementary to the winding tube 1 1.
- these shapes can be a polygonal profile, in particular an octagonal profile visible in FIGS. 3 and 4.
- the system 1 may include a control means integrated in the end-of-travel device or in an element linked to the spring 25 to enable a user to be informed that the spring 25 is armed and ready to operate.
- This control means can for example comprise a piezoelectric cell.
- the system 1 may include a safety system integrated into the end-of-travel device, or else into an element linked to the disengageable device 2, making it possible to prohibit the operation of the shutter as long as the spring 25 remains disarmed.
- the system 1 can comprise a control means integrated in the end-of-travel device or in an element linked to the spring 25, making it possible to prove that the drive system 1 has worked, and that the raising of the roller shutter by means of the release of the spring 25 has been obtained.
- a control means integrated in the end-of-travel device or in an element linked to the spring 25, making it possible to prove that the drive system 1 has worked, and that the raising of the roller shutter by means of the release of the spring 25 has been obtained.
- the drive system 1 can comprise not a single spring 25 but several elastic elements, in particular springs.
- springs for example, several coaxial springs arranged in series or in parallel can be used.
- the springs will be arranged coaxially, each spring exerting a torque on the next, the last being connected to the rotary element 9 to transmit the overall torque of the series of springs.
- the springs will be arranged coaxially, each spring exerting its torque on the rotary element.
- the spring or springs can also be mounted around a conical core, that is to say a piece centered on the central axis X and whose profile along the central axis X is not straight. During prestressing, the spring 25 would be wound against this part and the deformation of the spring 25 would be modified by cooperation with the non-rectilinear profile of this part, generating a non-linear stiffness when the spring 25 is released.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1874123A FR3090726B1 (fr) | 2018-12-24 | 2018-12-24 | Système d’entrainement en rotation d’un organe d’enroulement d’un tablier d’écran de fermeture enroulable |
PCT/EP2019/086907 WO2020136161A1 (fr) | 2018-12-24 | 2019-12-23 | Système d'entrainement en rotation d'un organe d'enroulement d'un tablier d'écran de fermeture enroulable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3902971A1 true EP3902971A1 (fr) | 2021-11-03 |
EP3902971B1 EP3902971B1 (fr) | 2024-04-17 |
Family
ID=66530319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19829624.6A Active EP3902971B1 (fr) | 2018-12-24 | 2019-12-23 | Système d'entrainement en rotation d'un organe d'enroulement d'un tablier d'écran de fermeture enroulable |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3902971B1 (fr) |
FR (1) | FR3090726B1 (fr) |
WO (1) | WO2020136161A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2673236B1 (fr) * | 1991-02-26 | 1998-08-14 | Thierry Kraemer | Dispositif de securite pour portes a rideau relevable. |
FR2736086A1 (fr) * | 1995-06-28 | 1997-01-03 | Bubendorff Sa | Volet roulant motorise |
JPH11101077A (ja) * | 1997-09-29 | 1999-04-13 | Tostem Corp | シャッター |
US5975185A (en) * | 1998-08-05 | 1999-11-02 | Qmi Roll Shutter Supply | Pop up safety device for rolling shutters |
FR3004745B3 (fr) * | 2013-04-17 | 2017-01-27 | Somfy Sas | Systeme d'entrainement en rotation d'un tambour d'enroulement, ecran de fermeture enroulable et methode de pilotage |
-
2018
- 2018-12-24 FR FR1874123A patent/FR3090726B1/fr active Active
-
2019
- 2019-12-23 WO PCT/EP2019/086907 patent/WO2020136161A1/fr unknown
- 2019-12-23 EP EP19829624.6A patent/EP3902971B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
EP3902971B1 (fr) | 2024-04-17 |
WO2020136161A1 (fr) | 2020-07-02 |
FR3090726A1 (fr) | 2020-06-26 |
FR3090726B1 (fr) | 2021-04-23 |
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