EP2428634B1 - Structure de support pour volets roulants, portes à volets roulants rapides ou éléments de fermeture similaires - Google Patents

Structure de support pour volets roulants, portes à volets roulants rapides ou éléments de fermeture similaires Download PDF

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Publication number
EP2428634B1
EP2428634B1 EP20110176529 EP11176529A EP2428634B1 EP 2428634 B1 EP2428634 B1 EP 2428634B1 EP 20110176529 EP20110176529 EP 20110176529 EP 11176529 A EP11176529 A EP 11176529A EP 2428634 B1 EP2428634 B1 EP 2428634B1
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EP
European Patent Office
Prior art keywords
tubular body
low friction
support structure
friction contact
support
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.)
Not-in-force
Application number
EP20110176529
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German (de)
English (en)
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EP2428634A1 (fr
Inventor
Antonio Checcucci
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.)
Cm Di Cestelli E Nuti - In Nome Collett Soc
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2428634A1 publication Critical patent/EP2428634A1/fr
Application granted granted Critical
Publication of EP2428634B1 publication Critical patent/EP2428634B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E06B9/02—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 the field of doors or windows and, in particular, it relates to a support structure for rolling shutters, fast rolling shutter doors and similar elements for closure of an opening of driven type.
  • a driven shutter of traditional type comprises a tubular body from which ends two shafts protrude integrally, which engage pivotally on the one side with a bearing mounted to a fixed support, and on the other side with a motor for rolling shutters, for example a gear motor.
  • a motor for rolling shutters for example a gear motor.
  • Transmission parts are provided for the movement of an electric motor at one of the two shafts. This way, the operation of the motor in one direction, or in the opposite direction, causes the rotation of the tubular body about its own longitudinal axis, and therefore winding, or unwinding of the shutter.
  • the inner surfaces of the tubular body are normally fastened, by means of good quality welding, usually of class two, or more discs in turn are welded to the shaft, from which shaft portions protrude from the end of the tubular body.
  • another portion of the shaft remains welded stably in the tubular body, and the protruding portion can operate stably cantilever-like, like a rotation pin.
  • the shaft with time can damage up to breaking causing a fall of the rolling shutter and, then bringing to reduction of the safety of people.
  • a frame comprising an upper member, for fixing the roller to a support, and a lower member, which holds the roller.
  • the upper member and the lower member are connected to each other by means of a connecting element, in order to form a frame having the shape of a "C".
  • the shaft that causes the rotation of the roller protrudes from the first end of the roller same up to a bearing.
  • This is arranged in a housing slidingly mounted along vertical guides.
  • the curtain is, instead, arranged next to two tensioning rollers located in respective fixed positions, arranged at opposite sides with respect to a longitudinal axis of the roller and that extend for all the length of the curtain.
  • a frame is equipped with shape similar to that above described and, in particular, having a guide that allows the vertical sliding of the roller for following the growth, or the reduction, of the diameter of the curtain at winding and unwinding it, respectively. More precisely, at the second end, the roller is operatively connected to a drive shaft by a transmission belt.
  • the roller when winding the curtain, the roller rises freely along the guide for following the growth of the diameter of the curtain. Instead, whem unwinding the curtain, the roller drops along the guide for following the reduction of diameter of the curtain. Both when unwinding the tenda and winding about the tube, the tensioning rollers remain adjacent to the curtain for ensuring a homogeneous winding for all its length and avoiding, then, the production of folds. Therefore, the support structure described in US3900063 is specifically designed for handling large curtains and, in order to solve the particular technical problem of the production of folds, wrinkles, or creases on the surface of the curtains during the operations of winding, or unwinding the same from a support roller.
  • a support structure for rolling elements of a rolling shutter, or a fast rolling shutter door, for closure of an opening comprising:
  • the tubular body rotates about the support means, by means of the, or each, low friction contact element which rolls/slides on the side surface of the tubular body.
  • the tubular body has not to be worked at the second end, and then it does not need a half-shaft from it protruding.
  • the support means for supporting the tubular body at the second end comprises at least one first and at least one second low friction contact element, for example arranged in symmetrical positions in a plane passing through the longitudinal axis of the tubular body.
  • the support means that is arranged to support the tubular body at the second end can comprises:
  • said first and second low friction contact elements are small roller bearings, where the first roller bearing is pivotally connected to the base body and the second roller bearing is pivotally connected to said base body arranged in a position substantially symmetric to that of said first roller bearing in a plane substantially vertical and passing through the longitudinal axis of the tubular body.
  • the line r and the line t form an angle ⁇ set between 90° and 120°.
  • the angle ⁇ can be equal to 90°, or 94°, or 100°, or 114°, or 120°, according to the diameter of the tubular body.
  • the means to low friction consist of slides lubricated made in said cradle open superiorly.
  • the support means is associated with lateral containing means located opposite to the support surface with respect to the tubular body. More in detail, the lateral containing means is adapted to avoid that the tubular body can fall from the support means by accident, or during maintenance of the support structure.
  • the lateral containing means is integrated in the support means and form with it a single part.
  • the support means can comprise:
  • the base body comprises a first plate and a second plate, said first and said second plates having respective facing surfaces, said first and said second roller bearings arranged between said facing facing surfaces of said first and of said second plate.
  • each plate has a shape selected from the group consisting of:
  • each plate of said base body can comprise at least one first embracing portion for first roller bearing and at least one second embracing portion for second roller bearing, said first and said second embracing portions protruding from a base portion.
  • At least one among the first and the second roller bearing can be a radial roller bearing, or a spherical roller bearing.
  • the, or each, bearing can be selected from the group consisting of:
  • the, or each, bearing is selected from the group consisting of:
  • Such exemplary embodiment allows compensating possible movements of the tubular body from the correct operation position.
  • the bearings allow, in fact, ensuring a correct operation also in situations in which it is not certain the alignment of a stiff shaft held by two, or more roller bearings both for construction and for dilation, or other deformation. This way, the stress is reduced of deformation due to an inaccurate construction, or operation.
  • the bearing can be coated with a layer of material at high rolling coefficient, such as rubber, or plastic material.
  • the layer of material at high rolling coefficient can be mounted directly on the outer surface of the bearing.
  • the layer at high rolling coefficient can be laid in a molten status on the outer surface of the bearing and.
  • a bush can be provided.
  • At least one among the first and the second low friction contact elements can comprise a brass bearing, or a bush, or another element of cylindrical shape.
  • a support structure 1 for rolling elements of a rolling shutter 50, or a fast rolling shutter door, or similar elements for closure of an opening 250 comprises a tubular body 10 having a side surface 15.
  • the tubular body comprises a first end portion 11, a second end portion 12 opposite to the first end portion 11 and a central portion 13 about which the rolling elements 55 are wound, for example slats rolling shutter 50, or the portions that make up the rolling door, for example made of PVC.
  • the support structure 1 also comprises a motor means 60 that is arranged to cause the rotation of a drive shaft, not visible in the figures, about a respective axis of rotation.
  • Motor means 60 is connected to the tubular body 10 through a transmission means 70.
  • the latter transmits the rotation movement of the drive shaft to the tubular body 10, in order to cause it to rotate at a first rotation speed 201 for winding the shutter 50 about the tubular body 10 same to make it possible an access to the light 250, or at a rotation speed 202, to unwind shutter 50 from the tubular body 10 in order to shut the opening 250.
  • the tubular body 10 is held at the second end portion 12 by support means 40.
  • the latter is connected to a support surface 200 and is adapted to support the tubular body 10 allowing to it, at a same time, a free rotation about longitudinal axis 101.
  • the support means 40 comprises at least one low friction contact element 41, or 42, which are mounted to contact the outer surface 15.
  • a first and a second low friction contact element 41 and 42 can be provided that, in use, are arranged in contact with the side surface 15 of the tubular body 10 at the second end 12 at a position external to the rolling shutter 50 ( Figs. 1 and 3 ).
  • first and the second low friction contact elements 41 and 42 can be a first and a second roller bearing.
  • the support means 40 comprises a base body 45 defining a rolling cradle open above, that is arranged to receive the side surface 15 of the tubular body 10.
  • the roller bearings 41 and 42 are arranged in the cradle and are pivotally connected to it, in order to cause the tubular body 10 roll in the cradle its own axis 101.
  • the roller bearings 41 and 42 rotate about respective rotation axes 141 and 142 substantially parallel to the rotation axis 101 of the tubular body 10. More in detail, the second roller bearing 42 is in a position substantially symmetric to that of the first roller bearing 41 in a plane ⁇ substantially vertical and passing through the longitudinal axis 101 of the tubular body 10 and orthogonal to the base body 45.
  • the base body 45 can be fastened, for example by means of screws, nails, or the like, to a bracket 150 connected to support surface 200 ( Fig. 2 ).
  • the base body 45 has a stiff portion 145 in which it is connected to the support surface 200 that defines the opening 250 ( Figs. 3 and 4 ).
  • a line r arranged in a plane ⁇ orthogonal to the tubular body 10 and passing through the centre C1 of the first roller bearing 41 and through the centre C of the tubular body 10
  • a line t which is also arranged in the plane ⁇ and passes through the centre C2 of the second roller bearing 42 and through the centre C of the tubular body, form an angle ⁇ with each other.
  • Such angle can be set between 80° and 130°, advantageously, set between 90° and 120°.
  • the angle ⁇ can be chosen responsive to the diameter d of the tubular body 10 ( Fig. 9 ).
  • an angle ⁇ 1 can be chosen that is about 90°.
  • an angle ⁇ 2 can be chosen that is about 98°.
  • an angle ⁇ 3 can be chosen that is about 108°.
  • the support means 40 comprises a first unit for roller bearings 41', for example two roller bearings 41'a and 41'b, pivotally connected to the base body 45, for example substantially U-shaped, or "V-shaped", and a second unit for roller bearings 42', for example two roller bearings 42'a and 42'b, pivotally connected to the base body 45. More in detail, each roller bearing of the first unit 41'a, 41'b, is in a position substantially symmetric to that of a corresponding roller bearing of the second unit 42'a, 42'b, respectively, in a plane ⁇ substantially vertical and passing through the longitudinal axis 101 of the tubular body 10 ( Fig. 7 ).
  • the base body 45 can comprise a first plate 46 and a second plate 47 having respective facing surfaces 46a and 47a. More precisely, the first and the second roller bearing 41 and 42, or the first and the second unit is a ball bearing 41' and 42' ( Fig. 7 ), arranged between surfaces 46a and 47a of the first and of the second plates 46 and 47.
  • each plate 46 and 47 may have a shape selected from the group consisting of: a curvilinear shape, a linear shape or a combination of linear and curved portions.
  • the plates 46 and 47 of the base body can comprise respective portions of engagement 48 and 49 for first roller bearing 41 and for second roller bearing 42 that protrude from a base portion 44.
  • the support means 40 is associated with a lateral containing means 70 located opposite to the support surface with respect to the tubular body 10. More precisely, the lateral containing means 70 is adapted to avoid that the tubular body 10 can fall from the support means 40 by accident, or during maintenance.
  • the lateral containing means 70 has at least one roller bearing 43 that assiste the rotation of the tubular body 10 during winding and unwinding steps of the shutter.
  • the, or each, roller bearing 41, 42, 41'a, 41'b, 42'a, 42'b is a radial roller bearing, or a spherical roller bearing, in particular with balls, or with rollers.
  • radial roller bearings, or spherical to a crown, or to double crown, or even bearings with triple crown.
  • Such exemplary embodiment allows compensating possible movements of the tubular body 10 from a correct operation position.
  • the bearings either radial or spherical roller bearings, allow to ensure a correct operation also in situations in which the alignment is not certain of a stiff shaft held by two, or more rollier bearings both for construction and for dilation, or other deformations. This way, the stress is reduced of deformation due to an inaccurate construction, or operation.
  • roller bearing 41 comprises a bearing, for example a ball bearing 61, coated outside with a layer 62 of plastic material, or rubber, for example polyzene, in particular having a high rolling coefficient.
  • the layer 62 can be applied, for example, in the molten state on the outer surface of the bearing 61 using known techniques.
  • an interposition element 63 is provided, for example a bush.
  • the bearing 61, or 62 can be mounted to a shaft 65 connected to base portion 45 by an antirotation device. In this way, only the bearing 61, or 62, in use, rotates about shaft 65, whereas the latter remains integral to base portion 45.
  • the low friction contact element is a slide 40", in particular a lubricated slide, cradle-like, i.e. substantially "U-shaped” that is arranged to support, in use, the tubular body 10 at the second end 12 at a position external to the rolling shutter 50.
  • the slide is mounted to allow the tubular body 10 to rotate freely.
  • the base body 45 has a support portion 141 protruding from it, in particular equipped with a arc-shaped portion 143 in which the slide 40" is connected.
  • the slide 40" can be constrained, for example by a fixed joint, in the arc-shaped portion 143 of the support portion 141.
  • two slides 41" and 42" are provided, in particular two lubricated slides.
  • the two slides 41" and 42" can be made of a low friction material, for example of composite material polytetrafluorethylene (PTFE) and bronze.
  • the base body 45 has two support portions 141 and 142, protruding from it to which slides 41" and 42" are mounted. More in detail, support portions 141 and 142 may have respective end portions 143 and 144, for example with curvilinear shape, in particular arc-shaped, and opposite to the end connected to the base body 45, at which the slides 41" and 42" are arranged.
  • the slides 41" and 42" are engaged in a removable way at the end portions 143 and 144, for example by a matching form. More precisely, the end portions 143 and 144 have curvilinear shape, for example arc-shaped, and comprise respective longitudinal grooves 145 and 146 with which the slides 41" and 42" engage by fixed portions 147 and 148 protruding from slides 41 and 42.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Micromachines (AREA)

Claims (15)

  1. Une structure support (1) pour des éléments roulants (55) d'un volet roulant, ou d'une porte à volet roulant rapide (50), destinée à la fermeture d'une ouverture (250), comprenant :
    - un corps tubulaire (10) possédant une surface latérale (15) comprenant une première partie d'extrémité (11), une partie centrale (13) et une deuxième partie d'extrémité (12) opposée à ladite première partie d'extrémité (11), ladite surface latérale (15) dudit corps tubulaire (10) possédant un diamètre destiné à l'enroulement desdits éléments roulants (55) sur ladite partie centrale (13), ledit corps tubulaire (10) possédant en outre un axe longitudinal (101),
    - un arbre d'entraînement et un moyen de moteur (60) qui est agencé de façon à entraîner la rotation de l'arbre d'entraînement autour d'un axe de rotation,
    - un moyen de transmission (70) qui est agencé de façon à transmettre le mouvement de rotation dudit arbre d'entraînement audit corps tubulaire (10) au niveau de ladite première extrémité (11), afin de l'amener à pivoter autour dudit axe longitudinal (101) à une première vitesse de rotation (201) ou à une deuxième vitesse de rotation (202) opposée à ladite première vitesse de rotation (201), lesdits éléments roulants (55) étant montés de façon à s'enrouler autour dudit corps tubulaire (10) lorsque ledit corps tubulaire (10) pivote à ladite première vitesse de rotation (201) et à se dérouler dudit corps tubulaire (10) lorsque ledit corps tubulaire (10) pivote à ladite deuxième vitesse de rotation (202),
    - un moyen de support (40) dudit corps tubulaire (10) au niveau de ladite deuxième extrémité (12), ledit moyen de support (40) étant monté de façon à permettre une rotation libre dudit corps tubulaire (10) autour dudit axe de rotation longitudinal (101),
    caractérisé en ce que ledit moyen de support (4 0) dudit corps tubulaire (10) au niveau de ladite deuxième extrémité (12) comprend au moins un élément de contact à faible frottement (41, 42) monté de façon à entrer en contact avec ladite surface latérale (15) dudit corps tubulaire (10) au niveau d'une position externe à ladite partie centrale autour de laquelle lesdits éléments roulants (55) sont enroulés.
  2. La structure support selon la Revendication 1, où ledit moyen de support (40) dudit corps tubulaire (10) au niveau de ladite deuxième extrémité (12) comprend au moins un premier et au moins un deuxième élément de contact à faible frottement (41, 42).
  3. La structure support selon la Revendication 2, où ledit moyen de support (40) qui est agencé de façon à soutenir ledit corps tubulaire (10) au niveau de ladite deuxième extrémité (12) comprend un corps de base (45) d'un seul tenant avec une surface de support (200), ledit corps de base (45) définissant un châssis à faible flottement ouvert, lesdits premier et deuxième éléments de contact à faible frottement (41, 42) étant montés sur ledit châssis de façon à entrer en contact avec ledit corps tubulaire (10) dans une mise en prise roulante autour dudit axe longitudinal (101).
  4. La structure support selon la Revendication 3, où lesdits premier et deuxième éléments de contact à faible frottement sont de petits roulements à rouleaux, où ledit premier roulement à rouleaux (41) est raccordé pivotant audit corps de base (45) et ledit deuxième roulement à rouleaux (42) est raccordé pivotant audit corps de base (45) et est dans une position sensiblement symétrique à celle dudit premier roulement à rouleaux (41) dans un plan γ sensiblement vertical et passant par ledit axe longitudinal (101) dudit corps tubulaire (10).
  5. La structure support selon la Revendication 2, où une ligne r passant par le centre C1 dudit premier élément de contact à faible frottement (41) et par le centre C dudit corps tubulaire (10) et agencé dans un plan δ orthogonal audit corps tubulaire (10), et une ligne t qui est également agencée dans ledit plan δ et passant par le centre dudit deuxième éléments de contact à faible frottement (42) et par le centre C dudit corps tubulaire (10), forment un angle α défini entre environ 90° et environ 120° l'une de l'autre.
  6. La structure support selon la Revendication 3, où ledit moyen de support (40) est associé à un moyen de logement latéral (70) situé à l'opposé de ladite surface de support (200) par rapport audit corps tubulaire (10), ledit moyen de logement latéral (70) étant configuré de façon à éviter que ledit corps tubulaire (10) puisse tomber dudit moyen de support (40) par accident ou au cours d'une opération de maintenance.
  7. La structure support selon la Revendication 6, où ledit moyen de logement latéral (70) est intégré dans ledit moyen de support (40) et forme avec celui-ci une pièce unique.
  8. La structure support selon la Revendication 1, où ledit moyen de support (40) comprend :
    - un corps de base (45) d'un seul tenant avec une surface de fixation,
    - une première unité d'éléments de contact à faible frottement (41'), chaque éléments de contact à faible frottement (41') de ladite première unité étant raccordé pivotant audit corps de base (45),
    - une deuxième unité d'éléments de contact à faible frottement (42'), chaque élément de contact à faible frottement (42') de ladite deuxième unité étant raccordé pivotant audit corps de base (45), lesdits éléments de contact à faible frottement (41'a, 41'b) de ladite première unité étant agencés dans des positions sensiblement symétriques à celles des éléments de contact à faible frottement (42'a, 42'b) de ladite deuxième unité dans un plan γ sensiblement vertical et passant par ledit axe longitudinal (101) dudit corps tubulaire (10).
  9. La structure support selon la Revendication 3, où ledit corps de base (45) comprend une première plaque (46) et une deuxième plaque (47), lesdites première et deuxième plaques (46,47) possédant des surfaces se faisant face respectives (46a, 47a), lesdits premier et deuxième éléments de contact à faible flottement (41, 42) étant agencés entre lesdites surfaces se faisant face (46a, 47a) desdites première et deuxième plaques (46,47).
  10. La structure support selon la Revendication 9, où chacune desdites première et deuxième plaques (46, 47) possède une forme sélectionnée dans le groupe se composant de :
    - une forme curviligne,
    - une forme linéaire,
    - une combinaison de celles-ci,
  11. La structure support selon la Revendication 9, où, chacune desdites plaques (46, 47) dudit corps de base (45) comprend au moins une première partie enveloppante (48) pour ledit premier élément de contact à faible frottement (41) et au moins une deuxième partie enveloppante (49) pour ledit deuxième élément de contact à faible frottement (42), lesdites première et deuxième parties enveloppantes (48, 49) faisant saillie à partir d'une partie de base (44).
  12. La structure support selon la Revendication 2, où au moins un élément parmi lesdits premier et deuxième éléments de contact à faible frottement (41, 42) est sélectionné dans le groupe se composant de :
    - un roulement à rouleaux radial,
    - un roulement à rouleaux sphérique,
  13. La structure support selon la Revendication 12, où ledit roulement à rouleaux radial ou ledit roulement à rouleaux sphérique est sélectionné dans le groupe se composant de :
    - un roulement à une couronne,
    - un roulement à deux couronnes,
    - un roulement à trois couronnes,
    - ou une combinaison de ceux-ci.
  14. La structure support selon la Revendication 12, où ledit roulement à rouleaux radial ou ledit roulement à rouleaux sphérique est enduit à l'extérieur d'une couche (62) de matériau à coefficient de roulement élevé, plus particulièrement ledit matériau à coefficient de roulement élevé est sélectionné dans le groupe se composant de : un matériau plastique ou du caoutchouc.
  15. La structure support selon la Revendication 1, où ledit, ou chaque, élément de contact à faible frottement est une glissière lubrifiée ou autolubrifiée (40", 41", 42").
EP20110176529 2010-08-04 2011-08-04 Structure de support pour volets roulants, portes à volets roulants rapides ou éléments de fermeture similaires Not-in-force EP2428634B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPI2010A000096A IT1401576B1 (it) 2010-08-04 2010-08-04 Struttura di supporto per serrande, saracinesche e simili elementi di chiusura di una luce.

Publications (2)

Publication Number Publication Date
EP2428634A1 EP2428634A1 (fr) 2012-03-14
EP2428634B1 true EP2428634B1 (fr) 2014-11-26

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EP20110176529 Not-in-force EP2428634B1 (fr) 2010-08-04 2011-08-04 Structure de support pour volets roulants, portes à volets roulants rapides ou éléments de fermeture similaires

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IT (1) IT1401576B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018116644A1 (de) * 2018-07-10 2020-01-16 Stöbich Brandschutz GmbH Brand- und/oder Rauchschutzvorhang

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2326642A (en) * 1941-11-24 1943-08-10 Astrup Company Awning belt center support
DE1241956B (de) * 1966-06-23 1967-06-08 Klaus W Knittel Aufrollvorrichtung fuer Vorhaenge, insbesondere ueberschwere und ueberbreite Trennvorhaenge
US3900063A (en) * 1973-06-18 1975-08-19 J H Channon Inc Roller curtain
US6357507B1 (en) * 1995-03-22 2002-03-19 Räsontec N.V. Rabobank Trust Comp. Curacao N.V. Curtain arrangement for preventing spread of smoke
US7537389B1 (en) * 2005-09-09 2009-05-26 Precision Industries Of Brevard, Inc. Bearing assembly for security and storm shutter

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Publication number Publication date
ITPI20100096A1 (it) 2012-02-05
EP2428634A1 (fr) 2012-03-14
IT1401576B1 (it) 2013-07-26

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