EP0976909A2 - Tubular motor reducer for the handling of winding roller shutters and sunblinds - Google Patents

Tubular motor reducer for the handling of winding roller shutters and sunblinds Download PDF

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Publication number
EP0976909A2
EP0976909A2 EP99830127A EP99830127A EP0976909A2 EP 0976909 A2 EP0976909 A2 EP 0976909A2 EP 99830127 A EP99830127 A EP 99830127A EP 99830127 A EP99830127 A EP 99830127A EP 0976909 A2 EP0976909 A2 EP 0976909A2
Authority
EP
European Patent Office
Prior art keywords
disk
spring
sleeve
features
motor reducer
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
Application number
EP99830127A
Other languages
German (de)
French (fr)
Other versions
EP0976909B1 (en
EP0976909A3 (en
Inventor
Dante Postacchini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaposa SRL
Original Assignee
Gaposa SRL
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Application filed by Gaposa SRL filed Critical Gaposa SRL
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Publication of EP0976909A3 publication Critical patent/EP0976909A3/en
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Publication of EP0976909B1 publication Critical patent/EP0976909B1/en
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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
    • 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
    • E06B2009/725—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller with epicyclic or planetary gear train
    • 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

  • This patent application relates to tubular motor reducer for the handling of winding roller shutters or sunblinds comprising a mechanic device incorporated in the epicyclic reduction gear used to prevent motion reversibility.
  • the device allows the motor reducer to drag the winding element into rotation in both directions and prevents it from moving backwards and dragging the motor shaft into rotation.
  • the tubular motor reducer comprises a multi-step epicyclic reduction gear housed in a fixed tubular element whose internal wall features a crown gear on which the crown wheels of the various steps of the epicyclic reduction gear engage.
  • the epicyclic reduction gear is dragged into rotation by an electric motor located outside the tubular element and positioned so that its shaft is coaxially aligned with the tubular element, from whose front end the pin for the power takeoff projects.
  • the adapter designed to drag the winding shaft of the roller shutter or sunblind into rotation is splined on the pin.
  • this type of tubular motor reducers is always provided with a safety braking system, used to permanently maintain the winding element in upraised position, thus avoiding the risk of accidentally starting the unwanted dangerous down travel of the winding element in an uncontrolled way because of its own weight.
  • the most frequently used stop device consists in electromagnetic brakes or, altematively, mechanical brakes.
  • the mechanical brakes have the advantage of saving the electric power necessary to activate the electromagnetic brakes and having overheating temperatures lower than the temperatures normally reached by electromagnetic brakes in case of prolonged use.
  • tubular motor reducers for roller shutters or sunblinds feature mechanical devices to make the motion transmission from the electric motor to the power takeoff pin irreversible, so that the power takeoff pin can only be dragged into rotation by the motor reducer, but not by the winding element, whose weight actually generates a twisting moment that discharges on the power takeoff pin.
  • the motion irreversibility devices comprise a pair of disks placed side by side that feature two opposed pairs of front teeth that are mutually fixed and engaged so that the first disk can drag the second one with the same transmission mode as in front coupling joints.
  • the first disk - that is the disk directly dragged into rotation by the electric motor - is splined at the end of the motor shaft that goes through a cylindrical collar on which a cylindrical elicoidal spring is extemally inserted, whose ends are radially bent out and engage from opposed direction one of the front teeth located on the first disk.
  • the spring represents no obstacle to the rotation of the first disk.
  • the spring prevents the motion to be transmitted from the second to the first disk, since the opposed pair of front teeth of the second disk engages with the two bent ends of the spring from the outside. In this way the thrust caused by both teeth on the bent end of the spring determines a stress on the spring itself that tends to tighten the spring tums, thus stopping the spring around the centering collar and block of the second disk.
  • the purpose of the present invention is to eliminate both these inconveniences that are typical of a tubular motor reducer for the handling of winding roller shutters and sunblinds.
  • the tubular motor reducer comprises an electric motor (1) able to rotate both clock and counterclockwise located in extemal coaxial position with respect to a sleeve (2) from which the pin (2a) for the power takeoff of the winding shaft of the roller shutter or sunblind projects.
  • the motion transmission from the motor (1) to the power takeoff pin (2a) occurs through an epicyclic reduction gear made up of three successive steps (3a, 3b and 3c) partly housed inside the sleeve (2), whose internal surface features a crown gear (2b) that engages with the crown wheels of the epicyclic reduction gear.
  • the tubular motor reducer also includes an irreversibility mechanical device made up of a first disk (4) provided with an opposed pair of front teeth (4a), a second disk (5) also provided with an opposed pair of front teeth (5a) and a cylindrical helical spring (6) whose ends (6a) are drawn closer and radially bent out.
  • the two disks (4 and 5) are placed side by side so that the teeth of one disk engage with the teeth of the other disk, with the same type of matching as in front coupling joints.
  • the two engaged pairs of front teeth contain the spring (6) between whose bent ends (6a) one of the teeth (4a) of the first disk (4) is located, while the two teeth (5a) of the second disk (5) are located outside and on opposite sides with respect to the two bent ends (6a) of the spring (6).
  • the tubular motor reducer according to the present invention is characterized by the fact that the pair of disks (4 and 5) with the spring (6) is incorporated into the epicyclic reduction gear and more exactly inserted after the first reduction step (3a).
  • the tubular motor reducer according to the present invention includes a secondary sleeve (7) used to contain the first step (3a) of the epicyclic reduction gear that engages on the opening of the sleeve (2) inside which both the two disks (4 and 5) with spring (6) and the second and third step of the reduction gear are housed.
  • the internal wall of the secondary sleeve (7) also features a crown gear (7a) with which the crown wheels of the first step (3a) engage, while the front of the sleeve (7) features the centering collar (7b) of the spring (6).
  • the first disk (4) is splined at the end of the shaft (8) coming out of the first step (3a), with the shaft that goes through and comes out of the collar (7b).
  • the second disk (5) features a central pinion (5b) that is used to transmit the motion to the crown wheels of the second step (3b).
  • the second disk (5) features a central centering hole on the shaft (8) and is in neutral with respect to the shaft, since the transmission from the shaft (8) to the disk (5) occurs through the disk (4), whose front teeth (4a) drag the front teeth (5a) of the disk (5) into rotation by means of the bent ends (6a) of the spring (6), located between the teeth (4a and 5a) and on which the teeth (4a) directly discharge their thrust.
  • the extemal surface of the collar (7b) features some axial grooves (7c) used to contain the necessary quantity of grease to guarantee a continuous effective lubrication of the sliding surface of the spring (6) that - as mentioned before - rotates around the collar (7b).
  • the continuous automatic lubrication contributes to an even higher noise reduction in the operation of the motor reducer according to the present invention.

Landscapes

  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Gear Transmission (AREA)
  • Blinds (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vending Machines For Individual Products (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Retarders (AREA)
  • Transmission Devices (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

This invention relates to a tubular motor reducer for the handling of winding roller shutters or sunblinds comprising a mechanic device incorporated in the epicyclic reduction gear (3a,3b,3c) used to prevent motion reversibility.

Description

This patent application relates to tubular motor reducer for the handling of winding roller shutters or sunblinds comprising a mechanic device incorporated in the epicyclic reduction gear used to prevent motion reversibility. The device allows the motor reducer to drag the winding element into rotation in both directions and prevents it from moving backwards and dragging the motor shaft into rotation.
The tubular motor reducer according to the present invention comprises a multi-step epicyclic reduction gear housed in a fixed tubular element whose internal wall features a crown gear on which the crown wheels of the various steps of the epicyclic reduction gear engage. The epicyclic reduction gear is dragged into rotation by an electric motor located outside the tubular element and positioned so that its shaft is coaxially aligned with the tubular element, from whose front end the pin for the power takeoff projects.
The adapter designed to drag the winding shaft of the roller shutter or sunblind into rotation is splined on the pin.
Since the motion transmission from the electric motor to the power takeoff pin is not irreversible, this type of tubular motor reducers is always provided with a safety braking system, used to permanently maintain the winding element in upraised position, thus avoiding the risk of accidentally starting the unwanted dangerous down travel of the winding element in an uncontrolled way because of its own weight.
The most frequently used stop device consists in electromagnetic brakes or, altematively, mechanical brakes. The mechanical brakes have the advantage of saving the electric power necessary to activate the electromagnetic brakes and having overheating temperatures lower than the temperatures normally reached by electromagnetic brakes in case of prolonged use.
Instead of the above-mentioned braking systems, some tubular motor reducers for roller shutters or sunblinds feature mechanical devices to make the motion transmission from the electric motor to the power takeoff pin irreversible, so that the power takeoff pin can only be dragged into rotation by the motor reducer, but not by the winding element, whose weight actually generates a twisting moment that discharges on the power takeoff pin.
The motion irreversibility devices comprise a pair of disks placed side by side that feature two opposed pairs of front teeth that are mutually fixed and engaged so that the first disk can drag the second one with the same transmission mode as in front coupling joints.
The first disk - that is the disk directly dragged into rotation by the electric motor - is splined at the end of the motor shaft that goes through a cylindrical collar on which a cylindrical elicoidal spring is extemally inserted, whose ends are radially bent out and engage from opposed direction one of the front teeth located on the first disk.
When the first disk is dragged by the electric motor into rotation, the above-mentioned spring is dragged into rotation in the same direction around its centering collar and guide because of the interference between the two bent ends and the disk tooth located between them.
It must be said that the thrust caused by the tooth on the bent end of the spring determines a stress on the spring itself that tends to enlarge the spring tums, thus practically annulling the friction between the tuming spring and its fixed centering collar.
So, in this case, the spring represents no obstacle to the rotation of the first disk.
Vice versa, the spring prevents the motion to be transmitted from the second to the first disk, since the opposed pair of front teeth of the second disk engages with the two bent ends of the spring from the outside. In this way the thrust caused by both teeth on the bent end of the spring determines a stress on the spring itself that tends to tighten the spring tums, thus stopping the spring around the centering collar and block of the second disk.
In view of the above, it must be said that in the current models of tubular motor reducers these mechanical irreversibility devices are always located between the electric motor and the epicyclic reduction gear. This position causes considerable noise of the motor reducer group since the vibrations from the electric motor are amplified first by the irreversibility device and then by the epicyclic reduction gear.
Another inconvenience is represented by the position of the irreversibility device between motor and reduction gear, resulting in a considerable loss of the motor rated torque.
The purpose of the present invention is to eliminate both these inconveniences that are typical of a tubular motor reducer for the handling of winding roller shutters and sunblinds.
This objective has been reached by the present invention thanks to a different position of the irreversibility mechanical device that is assembled inside the epicyclic reduction gear, more exactly after the first step of the epicyclic reduction gear.
In this way the vibrations transmitted by the motor at the first step of the epicyclic reduction gear are reduced by the irreversibility device itself, thus reducing the noise with respect to the known tubular motor reducers.
It must also be noted that this position increases the overall yield of the transmission system with an insignificant torque loss.
For clearer explication purposes, the description of the tubular motor reducer continues with reference to the enclosed drawings whereby:
  • Fig. 1 is an exploded lateral view of the various components of the tubular motor reducer according to the present invention;
  • Fig. 2 is an exploded axonometric view of the irreversibility mechanical device positioned after the first step of a three-step epicyclic reduction gear;
  • Fig. 3 is a cross-section of the three-step epicyclic reduction gear with an axial plane incorporating the irreversibility device positioned between the first and the second step.
With reference to the above mentioned figures, the tubular motor reducer according to the present invention comprises an electric motor (1) able to rotate both clock and counterclockwise located in extemal coaxial position with respect to a sleeve (2) from which the pin (2a) for the power takeoff of the winding shaft of the roller shutter or sunblind projects.
The motion transmission from the motor (1) to the power takeoff pin (2a) occurs through an epicyclic reduction gear made up of three successive steps (3a, 3b and 3c) partly housed inside the sleeve (2), whose internal surface features a crown gear (2b) that engages with the crown wheels of the epicyclic reduction gear.
The tubular motor reducer also includes an irreversibility mechanical device made up of a first disk (4) provided with an opposed pair of front teeth (4a), a second disk (5) also provided with an opposed pair of front teeth (5a) and a cylindrical helical spring (6) whose ends (6a) are drawn closer and radially bent out.
The two disks (4 and 5) are placed side by side so that the teeth of one disk engage with the teeth of the other disk, with the same type of matching as in front coupling joints. The two engaged pairs of front teeth contain the spring (6) between whose bent ends (6a) one of the teeth (4a) of the first disk (4) is located, while the two teeth (5a) of the second disk (5) are located outside and on opposite sides with respect to the two bent ends (6a) of the spring (6).
The tubular motor reducer according to the present invention is characterized by the fact that the pair of disks (4 and 5) with the spring (6) is incorporated into the epicyclic reduction gear and more exactly inserted after the first reduction step (3a).
At this purpose the tubular motor reducer according to the present invention includes a secondary sleeve (7) used to contain the first step (3a) of the epicyclic reduction gear that engages on the opening of the sleeve (2) inside which both the two disks (4 and 5) with spring (6) and the second and third step of the reduction gear are housed.
The internal wall of the secondary sleeve (7) also features a crown gear (7a) with which the crown wheels of the first step (3a) engage, while the front of the sleeve (7) features the centering collar (7b) of the spring (6).
The first disk (4) is splined at the end of the shaft (8) coming out of the first step (3a), with the shaft that goes through and comes out of the collar (7b). The second disk (5) features a central pinion (5b) that is used to transmit the motion to the crown wheels of the second step (3b).
The second disk (5) features a central centering hole on the shaft (8) and is in neutral with respect to the shaft, since the transmission from the shaft (8) to the disk (5) occurs through the disk (4), whose front teeth (4a) drag the front teeth (5a) of the disk (5) into rotation by means of the bent ends (6a) of the spring (6), located between the teeth (4a and 5a) and on which the teeth (4a) directly discharge their thrust.
Finally it must be said that the extemal surface of the collar (7b) features some axial grooves (7c) used to contain the necessary quantity of grease to guarantee a continuous effective lubrication of the sliding surface of the spring (6) that - as mentioned before - rotates around the collar (7b).
The continuous automatic lubrication contributes to an even higher noise reduction in the operation of the motor reducer according to the present invention.

Claims (3)

  1. Tubular motor reducer for the handling of roller shutters or sunblinds comprising:
    an electric motor (1) able to rotate both clock and counterclockwise located in extemal coaxial position with respect to a sleeve (2) from which the pin (2a) for the power takeoff projects and whose intemal surface features a crown gear (2b);
    a epicyclic reduction gear made up of one or more steps, housed in the sleeve (2), whose crown wheels engage with the crown gear (2b);
    an irreversibility mechanical device made up of a first disk (4) provided with an opposed pair of front teeth (4a), a second disk (5) also provided with an opposed pair of front teeth (5a) and a cylindrical helical spring (6) whose ends (6a) are drawn closer and radially bent out;
    characterized by the fact that the pair of disks (4 and 5) with the spring (6) is located in the epicyclic reduction gear and more exactly inserted after the first reduction step (3a).
  2. Motor reducer according to claim 1, comprising:
    a secondary sleeve (7) used to contain the first step (3a) of the epicyclic reduction gear that engages on the opening of the sleeve (2) inside which both the pair of disks (4 and 5) with spring (6) and the next reduction steps after the first step; being provided that the intemal wall of the secondary sleeve (7) features a crown gear (7a) on which the crown wheels of the first step (3a) engage, while the front of the sleeve (7) features the centering collar (7b) of the spring (6);
    a first disk (4) that is splined at the end of the shaft (8) coming out of the first step (3a), with the shaft that goes through and comes out of the collar (7a);
    a second disk (5) provided with a central pinion (5b) that transmits the motion to the crown wheels of the second step (3b); being provided that the second disk (5) features a central centering hole on the shaft (8) and is in neutral with respect to the shaft.
  3. Motor reducer according to the previous claims, characterized by the fact that the external surface of the collar (7b) features some axial grooves (7c) used to contain the necessary quantity of grease to guarantee a continuous effective lubrication of the sliding surface of the spring (6).
EP99830127A 1998-03-12 1999-03-09 Tubular motor reducer for the handling of winding roller shutters and sunblinds Expired - Lifetime EP0976909B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998AN000012U IT244838Y1 (en) 1998-03-12 1998-03-12 TUBULAR GEARMOTOR FOR HANDLING SHUTTERS AND ROLLING SHUTTERS
ITAN980012U 1998-03-12

Publications (3)

Publication Number Publication Date
EP0976909A2 true EP0976909A2 (en) 2000-02-02
EP0976909A3 EP0976909A3 (en) 2000-07-26
EP0976909B1 EP0976909B1 (en) 2004-08-11

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ID=11334172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830127A Expired - Lifetime EP0976909B1 (en) 1998-03-12 1999-03-09 Tubular motor reducer for the handling of winding roller shutters and sunblinds

Country Status (6)

Country Link
EP (1) EP0976909B1 (en)
AT (1) ATE273438T1 (en)
DE (1) DE69919277T2 (en)
ES (1) ES2227997T3 (en)
IT (1) IT244838Y1 (en)
PT (1) PT976909E (en)

Cited By (23)

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Publication number Priority date Publication date Assignee Title
KR100391119B1 (en) * 2000-08-09 2003-07-12 (주) 코인씨앤엠 Blind carrier
GB2394754A (en) * 2002-09-20 2004-05-05 Kaba Door Systems Ltd A shutter or door operating mechanism
WO2004051047A1 (en) * 2002-12-04 2004-06-17 Jae-Suk Kwak The roll screen for reduction device____________________________
EP1498570A1 (en) * 2003-07-17 2005-01-19 Nien Made Enterprise Co., Ltd. Wrap clutch device for anti-reverse transmission and window blind using the same
FR2880740A1 (en) * 2005-01-11 2006-07-14 Somfy Sas DIRECT CURRENT MOTOR ACTUATOR WITH IRREVERSIBLE TRANSMISSION FOR MANUFACTURING A SHUTTER
US7100668B2 (en) 2003-08-19 2006-09-05 Louver-Lite Limited Control units
DE202007013331U1 (en) 2007-09-21 2009-02-26 GfA-Gesellschaft für Antriebstechnik Dr.-Ing. Hammann GmbH & Co. KG Tubular motor drive member for rolling doors or the like. and assembly with it
FR2946997A1 (en) * 2009-06-23 2010-12-24 Somfy Sas ELECTRIC ACTUATOR FOR DRIVING A DOMOTIC SCREEN
CN101331294B (en) * 2005-12-13 2012-07-04 加波萨有限责任公司 Multi-stage combined planetary reduction gear
US8604736B2 (en) 2007-10-16 2013-12-10 Somfy Sas Method for analyzing the operation of an electromechanical actuator for the motorized maneuvering of a screen and actuator for its implementation
WO2015140433A1 (en) 2014-03-18 2015-09-24 Jacques Valdenaire Casing device having a lifting system for an electrical household appliance such as a dishwasher or a piece of furniture having a drawer
CN105356661A (en) * 2015-12-04 2016-02-24 宁波菲尔格机电科技有限公司 Modular tubular motor
CN105386710A (en) * 2015-11-27 2016-03-09 杭州威仕达机电科技有限公司 Brake torsion spring mechanism
CN105556166A (en) * 2013-09-11 2016-05-04 加波萨有限责任公司 Tubular actuating mechanism for roll closures
EP3219901A1 (en) * 2016-03-14 2017-09-20 VKR Holding A/S A tubular motor drive for a screening device and a screening device
EP3219900A1 (en) * 2016-03-14 2017-09-20 VKR Holding A/S A tubular motor drive for a screening device screening and a method for producing a tubular motor drive for a screening device
WO2017178654A1 (en) 2016-04-15 2017-10-19 Somfy Sas Methods for manufacturing a spring, a spring brake, and a spring brake comprising a spring
ITUA20164507A1 (en) * 2016-06-20 2017-12-20 Cherubini Spa ELECTRIC DRIVE ASSEMBLY FOR ROLLER-ON AWNINGS OR DARKENING CLOSURES
ITUA20164505A1 (en) * 2016-06-20 2017-12-20 Cherubini Spa ELECTRIC DRIVE ASSEMBLY FOR ROLLER-ON AWNINGS OR DARKENING CLOSURES
WO2017221087A1 (en) * 2016-06-20 2017-12-28 Cherubini S.P.A. Electric drive unit for roll-up awnings or blinds
US20180202226A1 (en) * 2015-07-24 2018-07-19 Somfy Activities Sa Versatile gear motor for roller blinds and non-roller blinds
US10233691B2 (en) 2013-07-03 2019-03-19 Somfy Sas Actuator for driving a home-automation screen and installation comprising such an actuator
CN115388148A (en) * 2022-08-03 2022-11-25 厦门华尔达智能科技股份有限公司 Noise-reducing and shock-absorbing structure of tubular motor

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USD498635S1 (en) 2003-08-27 2004-11-23 Louver Lite Limited Sprocket support for a blind
USD506096S1 (en) 2003-08-27 2005-06-14 Louver Lite Limited Center pin for a blind
FR2943379B1 (en) 2009-03-17 2011-04-08 Somfy Sas SPRING BRAKE FOR DRIVING ACTUATOR OF A DOMOTIC SCREEN AND ACTUATOR EQUIPPED WITH SUCH BRAKE
CN103746510B (en) * 2013-12-20 2017-01-11 宁波杜亚机电技术有限公司 Brake structure of mute motor

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DE3516935A1 (en) * 1985-05-17 1986-11-13 Daijiro Ono Hyogo Nakamura Roller blind
FR2610668B1 (en) * 1987-02-09 1990-10-26 Feller Samuel BRAKE REDUCER, PARTICULARLY FOR THE OPERATION OF ROLLING SHUTTERS AND THE LIKE
JP2656147B2 (en) * 1990-10-13 1997-09-24 立川ブラインド工業株式会社 Roll blind screen lifting device

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100391119B1 (en) * 2000-08-09 2003-07-12 (주) 코인씨앤엠 Blind carrier
GB2394754A (en) * 2002-09-20 2004-05-05 Kaba Door Systems Ltd A shutter or door operating mechanism
GB2394754B (en) * 2002-09-20 2005-10-19 Kaba Door Systems Ltd Door and shutter mechanism
US7234503B2 (en) 2002-12-04 2007-06-26 Jae-Suk Kwak Roll screen for reduction device
WO2004051047A1 (en) * 2002-12-04 2004-06-17 Jae-Suk Kwak The roll screen for reduction device____________________________
AU2003302710B2 (en) * 2002-12-04 2007-12-20 Jae-Suk Kwak The roll screen for reduction device
EP1498570A1 (en) * 2003-07-17 2005-01-19 Nien Made Enterprise Co., Ltd. Wrap clutch device for anti-reverse transmission and window blind using the same
US7100668B2 (en) 2003-08-19 2006-09-05 Louver-Lite Limited Control units
WO2006075222A1 (en) * 2005-01-11 2006-07-20 Somfy Sas Actuator comprising a direct-current motor and an irreversible transmission device, which is used to manoeuvre a roller shutter
FR2880740A1 (en) * 2005-01-11 2006-07-14 Somfy Sas DIRECT CURRENT MOTOR ACTUATOR WITH IRREVERSIBLE TRANSMISSION FOR MANUFACTURING A SHUTTER
US7564203B2 (en) 2005-01-11 2009-07-21 Somfy Sas Actuator with DC motor and with irreversible transmission for maneuvering a roller blind
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Also Published As

Publication number Publication date
ITAN980012U1 (en) 1999-09-12
IT244838Y1 (en) 2002-03-14
ITAN980012V0 (en) 1998-03-12
EP0976909B1 (en) 2004-08-11
ES2227997T3 (en) 2005-04-01
DE69919277D1 (en) 2004-09-16
EP0976909A3 (en) 2000-07-26
ATE273438T1 (en) 2004-08-15
PT976909E (en) 2004-12-31
DE69919277T2 (en) 2005-08-04

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