EP0940553B1 - Dispositif d'actionnement pour un store à rouleau - Google Patents

Dispositif d'actionnement pour un store à rouleau Download PDF

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Publication number
EP0940553B1
EP0940553B1 EP19980830448 EP98830448A EP0940553B1 EP 0940553 B1 EP0940553 B1 EP 0940553B1 EP 19980830448 EP19980830448 EP 19980830448 EP 98830448 A EP98830448 A EP 98830448A EP 0940553 B1 EP0940553 B1 EP 0940553B1
Authority
EP
European Patent Office
Prior art keywords
blind
crown
roller
supporting structure
driving pulley
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.)
Expired - Lifetime
Application number
EP19980830448
Other languages
German (de)
English (en)
Other versions
EP0940553A3 (fr
EP0940553A2 (fr
Inventor
Piero Calovi
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.)
Mottura SpA
Original Assignee
Mottura SpA
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 Mottura SpA filed Critical Mottura SpA
Publication of EP0940553A2 publication Critical patent/EP0940553A2/fr
Publication of EP0940553A3 publication Critical patent/EP0940553A3/fr
Application granted granted Critical
Publication of EP0940553B1 publication Critical patent/EP0940553B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E06B9/78—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles

Definitions

  • the present invention relates to devices for actuating roller blinds, of the type comprising:
  • the object of the present invention is that of providing a device for actuating roller blinds of the above indicated type which is able to satisfy both the above indicated needs in the best possible way.
  • a roller shutter lifting device in which the driving transmission includes an epicyclic gear train comprising:
  • the device of EP-A-0 096 664 implies the use of a clutch assembly comprising a clutch cooperating with a free ratchet wheel, which is actuated through an axial displacement of the driving pulley; the clutching or declutching of the clutch with respect to the solar sprocket is obtained through a screw thread of the driving pulley, by rotating the latter in one direction or the other.
  • a winch having a shaft with a pulley which has a ring on its periphery confining the winch cord and able to be declutched from the pulley.
  • the shaft is connected by one of its ends to a gear train forming a reducer between the winch and the fixed part of the rolling shutter shaft.
  • the gear train has an end of travel system which limits the shutter movement in its low position
  • the device according to the invention is characterized in that said outer crown is adapted to selectively assume two operative conditions, a first condition in which said crown is rigidly connected to said fixed supporting structure, so that the epicyclic gear train acts as a reducing unit in order to decrease the force requested for raising the blind, and a second operative condition, in which said toothed crown is free to rotate with respect to the fixed structure and is rigidly connected to said solar sprocket and said planets, so as to transmit the rotation of the driving pulley directly to the blind roller with a 1:1 transmission ratio.
  • the device according to the invention has an auxiliary element which can be mounted in two different conditions for providing the two above mentioned operative conditions of the toothed crown of the epicyclic gear unit.
  • This auxiliary element is constituted by a disk which in both of its operative conditions is rigidly connected to the above mentioned toothed crown by means of mating shaped surfaces. In a first operative condition of said disk, the latter has one of its front faces having respective engaging elements fitted within cooperating seats of the fixed supporting structure, so that in this condition the toothed crown is in its operative condition corresponding to the activation of the reducing unit.
  • the above mentioned auxiliary disk can be mounted with its front face facing towards the opposite direction, but still being engaged with the toothed crown, with the above mentioned engaging elements fitted between the solar sprocket and the planets, so that the toothed crown is free to rotate, but forms a whole unit with the solar sprocket and the planets, so that the direct drive transmission is activated.
  • the device according to the invention can be used both with very heavy blinds, in which it is paramount to make actuation by the user easier, and with blinds of reduced weight, in which it is most important to render the raising operation of the blind as much rapid as possible.
  • the operator which mounts the blind can adapt the device to the two above mentioned conditions simply by assembling the above mentioned auxiliary disk with said front face facing towards one direction or the other, thus obtaining the actuation either of the reducing unit or the direct drive transmission. Therefore, the manufacturer can put a single type of device into production, with clear advantages from the point of view of rationalisation of production and storing.
  • the above mentioned driving transmission is provided with a pair of gears, one of which is connected in rotation to the blind roller, said two gears having a number of teeth different from each other and being provided with two respective engaging elements which come into contact with each other after a predetermined number of turns of the above mentioned gears, so as to prevent a further rotation thereof, these engaging elements being arranged so as to stop the movement of the blind roller when the blind web is in a lowered predetermined condition.
  • this condition is predetermined as corresponding to a not fully unwound condition of the blind web from the roller, so as to avoid that the user, when driving lowering of the web, may cause a new winding of the web in the opposite direction or even separation of the web from the roller.
  • reference numeral 1 generally designates a roller blind, comprising a fixed supporting structure which, in the illustrated example, is constituted by two end brackets 2, 3 which are to be fixed to a ceiling or a wall, for instance adjacent to a window.
  • the supporting bracket 2 has a body of plastic material including a vertical wall 4 to which there is secured, by tight fit of teeth 5 into respective seats of wall 4, an annular plate 6 including a roof-like element 7 which is to prevent a ball chain 8 from coming out of a driving pulley 9, which will be described in detail in the following.
  • the ball chain 8 hanks downwardly to a height which can be easily reached by the user to enable him to actuate the blind.
  • Spring 10 in its undeformed condition has an inner diameter lower than the outer diameter of the fixed hub 4a, so that once it is mounted around hub 4a it is held tightened on this hub by its proper elasticity.
  • ring section 11 which in the illustrated example is made of zama, around which there is rotatably mounted the driving pulley 9 actuated by the ball chain 8.
  • the driving pulley 9 has an inner tooth 12 projecting radially inwardly on which there is fitted a U-shaped element 13 which extends axially at least throughout the whole axial dimension of spring 10 and is arranged circumferentially within the space between the two end tails 10a of spring 10, as clearly shown in figure 5.
  • the ring section 11 is rigidly connected to a wheel 14 by engagement of two front teeth 15 into cooperating notches 16 of wheel 14.
  • wheel 14 is rigidly connected to hub 17 of a planet carrying wheel 18, which will be described in detail in the following, by coupling of front teeth of hub 17 into cooperating seats 19 of wheel 14.
  • a blind web W is wound around a roller R which is rigidly mounted onto one end 20a of a shaft 20.
  • Shaft 20 is freely rotatable within the hub 17 of wheel 18 and has an opposite end 20b on which there is fitted a solar sprocket 21 of an epicyclic gear unit 22 which will be described in the following, the above mentioned unit being held axially by means of an elastic ring 23 fitted onto the end 20b of shaft 20.
  • the hub 17 of wheel 18 is rotatably mounted within the fixed hub 4a by interposition of a bush of plastic material 24 (see figure 3).
  • the epicyclic gear train 22 comprises the solar sprocket 21 connected in rotation to shaft 20, a plurality of planet gears 25 meshing with solar sprocket 21 and freely rotatably mounted on pins 26 of the planet carrying wheel 18 which is connected in rotation to wheel 14 and which, as it will be clearly apparent, is to be driven by pulley 9.
  • the epicyclic gear train 22 has an outer crown 27, having inner teeth 28, which in the illustrated example has a cylindrical annular body.
  • the crown 27 is freely rotatable within seat 29 of the fixed structure 2 and is rigidly connected to an auxiliary disk 30 by mating shaped elements, namely by engagement of radial teeth 31 distributed along the peripheral disk 30 within cooperating front notches 32 of crown 27.
  • the auxiliary disk 30 has one of its front faces having engaging elements 33 facing towards a lid 34 which is fitted on the vertical wall 4 of the fixed structure 2.
  • the engaging elements 33 are received within cooperating seats 35, so that the auxiliary disk 30 is rigidly connected to the fixed structure 2 and therefore rigidly connects also the outer crown 27 to this structure. Therefore, in this condition the epicyclic gear train 22 is able to act as a reducing gear unit by transmitting rotation from the planet carrying wheel 18 to the solar sprocket 21 rigidly connected to the shaft 20 of the blind roller (see also figure 4).
  • Figures 6, 8 refer to a variant in which the device comprises additional stop means for the blind web in the position of maximum lowering.
  • the seats 35 for the engaging elements 33 of the auxiliary disk 30 are formed, rather than in lid 34, in an intermediate plate 36 interposed between the disk 30 and the lid 34.
  • the latter further supports a pair of freely rotatable gears 37, 38.
  • Gear 38 is fitted on the end 20b of shaft 20 of the blind roller, so that it always rotates along with the blind roller.
  • the two gears 37, 38 have numbers of teeth different from each other by 1 and are provided with two respective locking elements 39, 40 (figure 8) which collide with each other when the web reaches the lowermost position, so as to stop it.
  • the two locking elements 39, 40 can be arranged so as to stop the blind web when it has not been fully unwound from the roller, so as to leave at least two-three turns of cloth around the roller which ensure both the subsequent proper winding back of the web, and the impossibility of a separation of the web from the roller.
  • the device according to the invention is characterized by a relatively simple and inexpensive structure, which at the same time is able to be adapted easily and rapidly at the time of installation so as to allow either actuation through a reducing gear unit (when it is necessary to decrease the effort for the user, with heavy blinds) or the actuation with direct drive (when it is necessary to favour rapidity of operation).
  • the stop means constituted by the two gears 37, 38 further improve the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (4)

  1. Appareil de manoeuvre d'un store à rouleau, comprenant :
    une structure fixe de support (2) qui est destinée à être fixée à un plafond ou un mur,
    un rouleau (R) de store sur lequel est enroulé un store continu (W) supporté afin qu'il puisse tourner autour d'un axe vertical par la structure de support (2),
    une poulie (9) d'entraínement de store montée afin qu'elle puisse tourner sur la structure de support (2) coaxialement au rouleau (R) de store et coopérant avec un organe d'entraínement (8), tel qu'une chaíne à billes, de manoeuvre du store, et
    une transmission d'entraínement placée entre la poulie d'entraínement (9) et le rouleau (R) de store, la transmission d'entraínement comprenant un train épicycloïdal (22) qui comporte :
    un pignon solaire (21) raccordé afin qu'il tourne avec le rouleau (R) de store,
    plusieurs pignons satellites (25) en prise avec le pignon solaire (21) et supportés afin qu'ils puissent tourner librement sur un porte-satellites (18) entraíné par la poulie d'entraínement (9), et
    une couronne externe (27) ayant des dents internes (28) en prise avec les pignons satellites (25),
       caractérisé en ce que la couronne externe (27) est destinée à prendre sélectivement deux états différents de fonctionnement : un premier état de fonctionnement dans lequel la couronne (27) est raccordée rigidement à la structure fixe de support (2), si bien que le train épicycloïdal (22) agit comme unité de réducteur qui réduit la force nécessaire au soulèvement du store, et un second état de fonctionnement dans lequel la couronne (27) est libre de tourner par rapport à la structure fixe de support (2) et est raccordée rigidement au pignon solaire (21) et aux pignons satellites (25), afin qu'elle transmette la rotation de la poulie d'entraínement (9) au rouleau (R) de store par entraínement direct.
  2. Appareil selon la revendication 1, caractérisé en ce qu'il comprend un dispositif de sélection des deux états de fonctionnement de la couronne (27), le dispositif de sélection comportant un élément auxiliaire (30) qui peut être monté sur la couronne (27) dans deux états de fonctionnement différents.
  3. Appareil selon la revendication 2, caractérisé en ce que l'élément auxiliaire est sous forme d'un disque (30) qui peut être raccordé à la couronne (27) avec l'une de ses faces avant ayant des éléments de coopération (33) tournés dans une direction ou la direction opposée, si bien que, dans le premier état, les éléments de coopération (33) sont logés dans des sièges coopérants (35) de la structure fixe de support (2), et que le disque (30) et la couronne (27) sont raccordés rigidement à la structure fixe de support, alors que, dans le second état de fonctionnement, les éléments de coopération (33) sont séparés des sièges (35) et coopèrent plutôt entre le pignon solaire (21) et les pignons satellites (25) pour raccorder ces derniers à la couronne (27).
  4. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un dispositif d'arrêt du store continu en position d'abaissement maximal, constitué par deux pignons (37, 38) dont l'un est raccordé afin qu'il tourne avec le rouleau (R) de store, les pignons (37, 38) ayant des nombres de dents différents et portant des éléments respectifs de blocage (39, 40) qui entrent en collision lorsque le store continu atteint une position basse prédéterminée.
EP19980830448 1998-03-06 1998-07-23 Dispositif d'actionnement pour un store à rouleau Expired - Lifetime EP0940553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO980186 1998-03-06
ITTO980186 ITTO980186A1 (it) 1998-03-06 1998-03-06 Dispositivo di comando per una tenda a rullo.

Publications (3)

Publication Number Publication Date
EP0940553A2 EP0940553A2 (fr) 1999-09-08
EP0940553A3 EP0940553A3 (fr) 2001-08-01
EP0940553B1 true EP0940553B1 (fr) 2003-03-26

Family

ID=11416537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980830448 Expired - Lifetime EP0940553B1 (fr) 1998-03-06 1998-07-23 Dispositif d'actionnement pour un store à rouleau

Country Status (4)

Country Link
EP (1) EP0940553B1 (fr)
DE (1) DE69812582T2 (fr)
ES (1) ES2192319T3 (fr)
IT (1) ITTO980186A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717399A3 (fr) * 2002-03-20 2008-04-09 Rollease, Inc. Embrayage de store a enroulement doté d'un engrenage interne
GB2392703B (en) * 2003-08-19 2004-06-23 Louver Lite Ltd Improvements in control units
AU2004200411C1 (en) * 2003-08-19 2004-03-25 Louver-Lite Limited Improvements in control units
GB2430225B (en) * 2005-09-14 2007-08-29 Tai-Ping Liu Shade roller capable of bearing heavy load
US20080121353A1 (en) * 2006-11-16 2008-05-29 Detmer Brandon J Manual roller shade having clutch mechanism, chain guide and universal mounting
CA3056096C (fr) 2010-05-28 2021-10-19 Hunter Douglas Inc. Elements de parement des ouvertures d'un edifice actionnes par moteurs rotatifs
CN201747245U (zh) * 2010-08-06 2011-02-16 邱永忠 前内置扭簧行星齿轮重载拉珠卷帘制头
WO2013052084A1 (fr) 2011-10-03 2013-04-11 Hunter Douglas Inc. Commande de couvertures d'ouvertures architecturales
CA2828819C (fr) 2012-10-03 2020-03-10 Hunter Douglas Inc. Procedes et appareil pour commander des ensembles de revetement d'ouverture architecturale
US9399888B2 (en) 2013-03-14 2016-07-26 Hunter Douglas, Inc. Methods and apparatus to control an architectural opening covering assembly
US20160189182A1 (en) 2014-12-31 2016-06-30 The Nielsen Company (Us), Llc Methods and apparatus to correct age misattribution in media impressions
US10407983B2 (en) 2016-10-26 2019-09-10 Hunter Douglas Inc. Operating system for an architectural covering

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1158117B (it) * 1982-06-09 1987-02-18 Elvana Piemonte Dispositivo a frizione per il sollevamento di avvolgibili
CH664420A5 (de) * 1984-06-04 1988-02-29 Schenker Emil Ag Antrieb fuer die aufzugswelle eines stores.
FR2722183B1 (fr) * 1994-07-11 1996-09-13 Zurfluh Feller Sa Treuil debrayable a cordon

Also Published As

Publication number Publication date
ES2192319T3 (es) 2003-10-01
DE69812582T2 (de) 2004-01-29
ITTO980186A1 (it) 1999-09-06
EP0940553A3 (fr) 2001-08-01
EP0940553A2 (fr) 1999-09-08
DE69812582D1 (de) 2003-04-30

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