EP1476633A1 - Groupe fonctionnel pour un enroulement automatique de rideaux - Google Patents

Groupe fonctionnel pour un enroulement automatique de rideaux

Info

Publication number
EP1476633A1
EP1476633A1 EP03702870A EP03702870A EP1476633A1 EP 1476633 A1 EP1476633 A1 EP 1476633A1 EP 03702870 A EP03702870 A EP 03702870A EP 03702870 A EP03702870 A EP 03702870A EP 1476633 A1 EP1476633 A1 EP 1476633A1
Authority
EP
European Patent Office
Prior art keywords
barrel
sleeve
roll
operation group
winding
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.)
Withdrawn
Application number
EP03702870A
Other languages
German (de)
English (en)
Inventor
Pietro Dalle Nogare
Simone Dalle Nogare
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.)
Dalex SRL
Original Assignee
Dalex SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dalex SRL filed Critical Dalex SRL
Publication of EP1476633A1 publication Critical patent/EP1476633A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • 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
    • 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

Definitions

  • the invention relates to winding up curtains, to be applied to windows and the like.
  • the above mentioned curtains are unwound from a winding roll, with a downward movement, up to a position, in which a desired darkening, partial or total, is reached.
  • the known devices for stabilizing the curtain in different positions, in which it is arranged, as well as for facilitating its winding up, are connected to the winding roll.
  • the first type includes elastic means, which are gradually loaded due to the roll rotation, during the curtain unwinding, and which can supply a reaction force strong enough to wind up the roll automatically, after having suitably released a stop device, situated in the roll.
  • the stop device is aimed at acting automatically in order to stabilize the curtain when the unwinding action is stopped, after the desired position has been reached.
  • the second type of curtains includes elastic means analogous to the first type, but calibrated in such a way that the reaction force supplied thereby is a function of the curtain weight, in proportion to the unwound quantity thereof .
  • the curtain position is substantially auto-stabilized and the above mentioned stop device is not necessary.
  • a pulley is mounted coaxial and integral with the winding roll, and is operated by a chain to wind up and unwind the curtain.
  • the above mentioned elastic means present in the first and second type, usually include at least one helical spring, whose ends are fastened respectively, to the winding roll and to a motionless element; consequently, the roll rotation, during the curtain unwinding, determines the spring torsion with the increase of the load, and consequently, of the elastic reaction.
  • the curtain good working depends on the correct reaction of the elastic means, which is calibrated by an initial pre-loading of the elastic means, performed usually by known pre-loading means, situated near the winding roll end.
  • the stop device of the automatically winding up curtains is connected to the relative pre-loading mechanism, in the same operation group.
  • the so obtained group has a limited strength, which increases the breaking risk when the curtain is opened or closed.
  • the group cannot be applied to manually winding up curtains, which do not require the stop device, as specified above.
  • the object of the present invention is therefore to avoid the above mentioned functional and productive drawbacks by proposing an original operation group for curtains with a winding roll.
  • the group, according to the invention must be highly reliable and very simple to construct as well as to assemble, with respect to the known groups.
  • Another object of the present invention is to propose a group, which can be easily adapted to be mounted on the winding rolls of different diameters, without changing the parts forming it.
  • an operation group for wind up curtains unwinding from and winding on a winding roll including: a mechanism for imposing and stabilizing a pre- established pre-loading value for first elastic means, present in said winding roll; a stop device for locking said winding roll and stabilizing said curtain in any unwound position; and a hub for supporting the roll at least at one of its ends ; said operation group being characterized in that the mechanism is connected to a first end of said roll and said stop device is connected to a second end of the roll and forms the hub.
  • Figure 1 is a perspective view of the proposed operation group and the inner means of the winding roll;
  • Figure 2 is a perspective exploded view of preloading mechanism of the proposed group;
  • Figure 3 is a view of the same mechanism of Figure 2, in assembled configuration
  • Figure 4 is a perspective exploded view of a stop device of the proposed operation group
  • Figure 5 is a view of a first adapter ring to be used in the proposed group
  • Figure 6 is a view of a second adapter ring to be used in the proposed group.
  • the reference letter G indicates the proposed operation group, designed to be connected to the winding roll 3 of automatically winding up curtains.
  • the operation group G includes a mechanism 1, a stop device 90 and a hub 9 .
  • the mechanism 1 is aimed at imposing and stabilizing a predetermined pre-loading value for first elastic means 2, formed by an helical spring situated inside the winding roll 3 and aimed, in known way, at supporting the weight of the curtain unwound from the roll 3, as well as at facilitating the curtain winding up on the roll 3.
  • the mechanism 1 includes a sleeve 4, a barrel 5, introduced into the sleeve 4, and second elastic means 6, situated between the sleeve and the barrel.
  • Front side acting clutch means 7, situated between the sleeve and the barrel, are defined by a plurality of spaces 70, regularly spaced apart, made in the sleeve 4, and by complementary claws 71 made in a disc 51 formed by the barrel 5.
  • the barrel 5 can move axially between two positions PI, P2. When the barrel 5 is in the position PI, the clutch means 7 are connected and when the barrel is in the position P2, the clutch means are disconnected.
  • the barrel 5 is driven into rotation along with the sleeve 4, while in the position P2 it can freely rotate with respect to the sleeve .
  • the second elastic means 6 are situated inside the sleeve 4 and act, in axial direction, on a cup 52, likewise formed by the barrel 5, so that the claws 71 and the spaces 70 are mutually engaged in absence of other forces .
  • the barrel 5 is formed by two pieces 5a, 5b ( Figure 2) , which are connected, e.g. by wrench coupling and screw means 53.
  • a prismatic shank 50, formed by the piece 5b, extends externally with respect to the sleeve 4, when the mechanism 1 is assembled ( Figure 3), while an axial hole, not shown, facing the opposite side with respect to the shank 50, is made in the piece 5a.
  • the mechanism 1 is to be connected to a end 3a of the winding roll 3, in such a way that: the sleeve 4 is coaxially integral with the end 3a; the barrel 5 is slidingly keyed, by the axial hole, on a grooved shaft 8, made in known way inside the winding roll 3 and motionless with respect to the latter; the barrel 5 is driven into rotation along with the proximal end 2a of the spring 2 of the winding roll 3, to which the remaining end is fastened, by a connecting pin 13, attached for rotation to the roll 3.
  • proximal end 2a of the spring 2 slides, coupled with the shaft 8, in a way completely known and not shown in detail .
  • the proximal end 2a is fastened to a bushing 2b, which is slidingly coupled with the shaft 8 by suitable grooves and corresponding complementary protrusions made in the shaft 8 and the bushing 2b.
  • the assemblage When the assemblage is finished, it is possible to adjust the value of the first elastic means 2 pre-loading, acting manually or with suitable instruments, on the prismatic shank 50, first to make the barrel 5 slide axially from the position PI to the position P2 , thus disengaging the clutch means 7 and then, to increase or reduce the pre-loading by rotating the barrel 5 with respect to the sleeve 4, in one direction or the other.
  • the release of the barrel 5 makes it slide axially in the opposite direction, from the position P2 to the position PI, due to the elastic reaction of the second elastic means 6, and consequently the clutch means 7 become engaged.
  • the barrel 5 is driven, by the first elastic means 2, so as to rotate a bit, just until the claws 71 enter the respective spaces 70.
  • the angular amplitude of the above-mentioned rotation is very limited, inversely proportional to the number of claws 71 and spaces 70, but anyway it does not affect in noticeably way the imposed pre-loading.
  • the winding roll - mechanism assembly is aimed at being mounted on support means 10, situated beside thee end 3a ( Figure 3), so that the shank 50 is coupled with a complementary seat 10a, made in the support means 10 and that the barrel 5 is brought to the position P2, in which the clutch means 7 are disengaged.
  • the roll 3 is free to rotate in one direction, to unwind the curtain, and in the other direction, to wind up the curtain, with the defined preloading of the first elastic means 2.
  • the hub 9 is aimed at being connected to the remaining end of the winding roll 3 , to allow the latter to be fastened to corresponding support means, not shown, e.g. like the ones present at the opposite end 3a.
  • the above mentioned stop device 90 acts automatically to stabilize the curtain in the desired position.
  • the stop device 90 of the operation group G proposed by the present invention is so constructed as to form the hub 9 and is positioned at the end of the winding roll 3 corresponding to the latter, that is the end without the mechanism 1.
  • the stop device 90 includes two cylindrical elements 90a, 90b, the first of which is integral with the corresponding roll 3 end, similarly to the sleeve 4, while the second is introduced into the first one, similarly to the barrel 5, and is prevented from rotating by a relative prismatic shank 91 coupled with a seat of the corresponding support means .
  • Two balls 93, situated between the two elements 90a, 90b, are introduced freely into first radial seats 190a formed by the first element 90a.
  • Second radial seats 190b are made in said second element 90b: the unwinding of the curtain is free, independently from the roll 3 rotation speed.
  • the unwinding operation is stopped; by allowing a short going back of the curtain, which is pulled by the first elastic means 2 and tends to wind up, the balls 93 are allowed to engage, due to gravity, with the second seats 190b, so that the roll 3 becomes locked.
  • the sudden roll rotation in the winding up direction determined by the first elastic means 2, keeps the balls 93 in the first seats 190a, due to the centrifugal force, so that the curtain can be completely wound up on the roll 3.
  • the operation group includes two optional elements to be used in case the dimensions of the winding roll 3 are bigger than the one concerned so far, as belonging to another dimension category.
  • Figure 5 shows a first adapter ring 30, which is aimed at being fitted on the sleeve 4; on the opposite side, another identical first adapter ring 30 is fitted onto the first cylindrical element 90a.
  • the adaptor ring 30 is made in such a way as to maintain the constraints existing between the roll 3, the sleeve 4 and the element 90a, with respect to rotation.
  • Figure 6 shows a second adaptor ring 300, including two half-rings 300a to be mounted in a corresponding position of the connecting pin 13. The section is aimed at fastening the connecting pin to the roll 3.
  • the adaptor ring 300 is made in such a way as to maintain the constraint existing between the roll 3 and the connecting pin 13, with respect to rotation.
  • adaptor rings 30, 300 allows to use the same operation group for rolls of different diameters, which is evidently positive for the costs reduction.
  • the proposed operation group is extremely versatile, due to the fact that the stop device 90 is physically separated from the mechanism 1. This offers clear advantages for constructive simplicity of the relative components, advantages which result in easy assembly, strength and, last but not least, low production costs .
  • Another advantage deriving from the constructive characteristics of the mechanism 1, described in the example, concerns the easiness, with which the pre- loading . of the first elastic means 2 can be adjusted, without risking that a clumsy movement can unload them completely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

L'invention concerne un groupe fonctionnel pour rideaux comportant un rouleau d'enroulement, comprenant un mécanisme (1), un dispositif d'arrêt (90) et un moyeu (9), le mécanisme (1) étant destiné à imposer et à stabiliser une valeur de préchargement préétablie pour un premier élément élastique (2), situé dans le rouleau d'enroulement (3), le dispositif d'arrêt (90) étant destiné à verrouiller le rouleau d'enroulement (3) pour stabiliser le rideau dans une position déroulée quelconque et le moyeu (9) étant destiné à servir de support au rouleau (3) à l'une de ses extrémités. Le groupe fonctionnel susmentionné (G) comprend le mécanisme (1) relié à une extrémité (3a) du rouleau (3) et le dispositif d'arrêt (90) relié à l'autre extrémité du rouleau (3), de sorte à définir le moyeu (9).
EP03702870A 2002-02-19 2003-02-17 Groupe fonctionnel pour un enroulement automatique de rideaux Withdrawn EP1476633A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2002BO000083A ITBO20020083A1 (it) 2002-02-19 2002-02-19 Gruppo operativo per tendine a riavvolgimento automatico
ITBO20020083 2002-02-19
PCT/IB2003/000531 WO2003071081A1 (fr) 2002-02-19 2003-02-17 Groupe fonctionnel pour un enroulement automatique de rideaux

Publications (1)

Publication Number Publication Date
EP1476633A1 true EP1476633A1 (fr) 2004-11-17

Family

ID=11439915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03702870A Withdrawn EP1476633A1 (fr) 2002-02-19 2003-02-17 Groupe fonctionnel pour un enroulement automatique de rideaux

Country Status (6)

Country Link
US (1) US20050087642A1 (fr)
EP (1) EP1476633A1 (fr)
AU (1) AU2003205987A1 (fr)
CA (1) CA2476227A1 (fr)
IT (1) ITBO20020083A1 (fr)
WO (1) WO2003071081A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9554975B2 (en) 2005-03-21 2017-01-31 Glaxo Group Limited Alkyl sulfate free and orthophosphate free dentifrice composition comprising fluoride source and a silica dental abrasive

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
ES2293857B1 (es) * 2007-09-04 2009-04-01 Fernando Fernandez Lafuente Soporte para ejes motorizados de persianas toldos y similares.
US9631425B2 (en) * 2015-09-08 2017-04-25 Crestron Electronics, Inc. Roller shade with a pretensioned spring and method for pretensioning the spring
US11988040B2 (en) * 2018-01-16 2024-05-21 Crestron Electronics, Inc. System and method for reducing friction in a counterbalancing spring of a roller shade
US10738530B2 (en) 2018-01-16 2020-08-11 Crestron Electronics, Inc. Motor pretensioned roller shade
US20220025699A1 (en) * 2020-07-27 2022-01-27 Eastern Metal Supply Inc. Torsion spring adjuster
CN113266262A (zh) * 2021-06-28 2021-08-17 无锡万斯家居科技股份有限公司 一种改进型无拉绳罗马帘卷帘

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US1726589A (en) * 1926-05-21 1929-09-03 Schultes Paul Tensioning-device for roller blinds
US1853150A (en) * 1929-07-04 1932-04-12 Schultes Paul Spring controlled roller for roller blinds
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US5099906A (en) * 1989-09-19 1992-03-31 Metaco Co., Ltd. Roller screen unit
JPH10121873A (ja) * 1996-10-23 1998-05-12 Hisahiro Igarashi バランス式シャッタ及びそのバランス装置
US5881792A (en) * 1997-08-28 1999-03-16 Cheng; Li-Ming Shade roller
US6131642A (en) * 1998-09-28 2000-10-17 Hunter Douglas International N.V. Locking device
CA2270682C (fr) * 1999-05-04 2007-08-14 Sunproject Canada Inc. Mecanisme de blocage pour rideaux de type store et autres articles semblables
DE29923460U1 (de) * 1999-09-22 2000-11-30 Happich Fahrzeug & Ind Teile Sonnenschutzrollo
JP3077194U (ja) * 2000-10-24 2001-05-11 株式会社シネマ工房 映写スクリーン等のシート巻取装置
DE20116309U1 (de) * 2001-10-05 2002-01-17 Wang Wen Ren Verbesserte Puffer-Vorrichtung zum Aufrollen des Vorhangs

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9554975B2 (en) 2005-03-21 2017-01-31 Glaxo Group Limited Alkyl sulfate free and orthophosphate free dentifrice composition comprising fluoride source and a silica dental abrasive

Also Published As

Publication number Publication date
WO2003071081A1 (fr) 2003-08-28
AU2003205987A1 (en) 2003-09-09
ITBO20020083A0 (it) 2002-02-19
ITBO20020083A1 (it) 2003-08-19
US20050087642A1 (en) 2005-04-28
CA2476227A1 (fr) 2003-08-28

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