EP4202172A1 - Store à lattes - Google Patents

Store à lattes Download PDF

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Publication number
EP4202172A1
EP4202172A1 EP22179293.0A EP22179293A EP4202172A1 EP 4202172 A1 EP4202172 A1 EP 4202172A1 EP 22179293 A EP22179293 A EP 22179293A EP 4202172 A1 EP4202172 A1 EP 4202172A1
Authority
EP
European Patent Office
Prior art keywords
slat
slats
blind
arm
blind according
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.)
Pending
Application number
EP22179293.0A
Other languages
German (de)
English (en)
Inventor
Roberto Borsato
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.)
Mergerb Srl
Original Assignee
Mergerb 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 Mergerb Srl filed Critical Mergerb Srl
Publication of EP4202172A1 publication Critical patent/EP4202172A1/fr
Pending 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/327—Guides for raisable lamellar blinds with horizontal lamellae

Definitions

  • the present invention relates to a slats blind.
  • Blinds with slats comprising a plurality of slats or staves, generally made of metallic material, preferably of extruded aluminum, which are supported at the ends by movement and orientation mechanisms, housed in vertical guides and are capable of causing both the simultaneous orientation of all the slats around their horizontal longitudinal axis and their translation along said guides.
  • each lamella is supported at both ends by support elements comprising a plate for direct attachment to the lamella and a pair of arms, connected at each end to the homologous arms attached to the other lamellae.
  • the arms of the support elements fixed to each end of all the slats are slidably housed within the corresponding vertical guide and are joined to the constraint plate at the end of the slat by a shaft that slides along a longitudinal slot made in the wall of the vertical guide facing towards the opposite vertical guide and constitutes the pivot for rotation of the slat in the orientation phase.
  • the vertical movements of the individual slats have the function of unfolding the blind in the sense of lowering it until it occupies the overall opening of the window or of the French window and of collecting it at the top in a pack when the blind is not in use.
  • the slats While in the collected tent the slats are packed one to the other, in the unfolded tent the slats are equally spaced from each other; if the blind is fully unfolded, all the slats are spaced apart and occupy the entire opening of the window or French door, while if the blind is partially unfolded, the slats are spaced equally from each other in the unfolded upper part of the blind and they are delimited at the bottom by the pack of the remaining slats. Obviously, the orientation maneuver of the slats around their longitudinal axis is relevant only for the slats spaced apart.
  • a known type of slat blind is described in DE 3638406 and provides that flattened cords are constrained to the ends of each arm of each slat support element which are housed, like the support elements, within the vertical guides of the blind.
  • Each of these cords is formed by rigid portions alternating with flexible portions and is configured so that a rigid portion is freely interposed between rigid portions articulated at the ends of the support arms of two adjacent slats.
  • this known slat blind is as follows: when the blind is unfolded (blind closed) each slat is spaced from the others to the extent allowed by the length of the stretches of cord between adjacent slats, while when the blind is to be opened, it is caused the lifting of the lower slat which, with its upward movement, collects the overlying slats to form a pack, which will be more or less high depending on the extent of the lifting of the lower slat of the blind.
  • the lengths of cord comprised between adjacent slats fold in correspondence with their flexible portions and their free rigid portions are arranged parallel to their rigid portions articulated to the arms of the support elements, while in the orientation phase of the slats the cords of each pair constrained to the same support elements are made to slide along the vertical guides in an opposite direction so as to cause the simultaneous rotation of all the support elements around the respective shafts and therefore the simultaneous rotation of all the lamellas.
  • a drawback of this known solution consists in the fact that the folding of the cords when the slats of the blind are collected in a bundle is subject to jamming of their free rigid portions and does not ensure the regularity of folding which is essential for the correct functioning of the blind assemble.
  • tie rods are constituted by complexes of rigid rods articulated in a pantograph, which run inside each vertical guide and are constrained to the supporting elements of the individual slats.
  • each movement and orientation mechanism comprises two series of rigid rods, generally made of stainless steel and articulated to each other at the ends.
  • the support elements are also articulated at alternate ends of these rods, generally made of cast zamak in a single body with the plate fastening to the lamella.
  • this known slat blind is as follows: when the blind is unfolded (blind closed) each slat is spaced from the others to the extent allowed by the length of the articulated rods, while when the blind must be opened, the lower slat ascent is commanded, which in its movement collects the overlying slats to form a pack.
  • the articulated rods which connect the arms of the respective support elements to each other, fold back on themselves due to their own weight, while in the orientation phase of the slats the two series of articulated rods that connect between the arms of the supports of the respective movement and orientation mechanisms are made to move in an opposite direction so as to cause the simultaneous rotation of all the support elements around the respective shafts and therefore the rotation of all the lamellae.
  • each mechanism for moving and orienting the slats provides a large number of points of articulation between the folding rods as well as between these and the elements supporting the slats (in a normal 200 cm high slat blind the points of articulation affecting the two orientation movement mechanisms are approximately 190).
  • this high number of articulation points involve different materials (stainless steel for the pantograph articulated rods, zamak for the support elements of the lamellas and brass for the articulation rivets), require couplings with tolerances of 0.2-0.3 mm and are exposed to external atmospheric conditions.
  • Another drawback consists in the fact that in order to avoid deformation of the rods a very precise and accurate installation of the guides is required, with the need to resort to specialized personnel and with inevitable repercussions on the costs of installing the blind.
  • EP 1418306 describes a slat blind, in which the support elements of the slats themselves are directly constrained with the ends of their belt arms which, thanks to their flexibility, form loops in the portions between adjacent support elements when the slats of the tent are in packed condition.
  • connection between each belt and the corresponding end of the arms of the supporting elements of the slats is obtained by fixing to the belt at fixed intervals cylindrical bodies, which engage in an articulated manner with the ends of the arms and this on the one hand requires the use of belts subjected to particular processing, which affect the production costs in a not insignificant way, and on the other hand, due to the formation of loops of uncontrolled shape in the stretches of belt included between adjacent support elements when the lamellae are packed, involve a rubbing of these loops against the internal walls of the vertical guides or, alternatively, the need to make these guides with a width such as to avoid this rubbing.
  • tie rods consist of rigid rods
  • these must be equipped with a stop to prevent them from being aligned in the unfolded condition, since in this case their correct automatic folding would not be ensured when the blind is packed.
  • the weight of the blind often leads to the progressive yielding of these stops over time and this, in addition to compromising their function, could cause the inconvenience that their presence wanted to avoid, namely the alignment of the pairs of rods that form each tie rod.
  • the tie rods are made up of ribbons or flexible cords
  • the weight of the slats subjects the cord sections to a traction that is differentiated in the sense that it is greater for the upper sections and involves a non-constant distance between the various lamellae.
  • the various sections of ribbon or cord unequal, but in practice this would require an individual design for each size of blind, i.e. an extremely complex activity with a dubious result.
  • the present invention aims to eliminate all the drawbacks indicated above, which are recognizable in all the slat blinds currently existing.
  • an object of the invention is to produce a slat blind which does not require its individual design according to its dimensions.
  • Another object of the invention is to provide a blind with slats which ensures its correct and regular operation without jamming or breaking for practically the whole life of the blind, without requiring any maintenance.
  • Another object of the invention is to provide a blind with slats that does not require lateral guides of dimensions greater than those required by the dimensions of the support arms of the slats and that does not involve internal rubbing.
  • Another object of the invention is to produce a blind with slats which does not require compliance with very strict manufacturing tolerances of its parts and equally very strict installation tolerances.
  • Another object of the invention is to provide a blind with slats that can use materials that are at least partially available on the market.
  • the slat blind traditionally comprises a plurality of slats 2, preferably made of extruded aluminum and shaped so as to allow their packing when the blind is raised and their uniform distribution to form a more or less darkening continuous screen when the blind is lowered and the slats 2 are uniformly oriented around their respective longitudinal axis.
  • Each lamella 2 is supported at both ends by a traditional support element 4, comprising an arm 6, at the ends of which two flexible cords 8, 8' are constrained in the manner described below.
  • a shaft 10 is also applied centrally to the arm 6, orthogonal to the axis of the arm itself and integral with a plate 12 for restraining the end of the lamella 2.
  • a fixing clip 14 is preferably interlocking to each plate 12 in a traditional way of the end of a lamella 2 to the support element 4.
  • Each cord 8,8' is advantageously constituted by a core made preferably with thin filaments of a material with high tensile strength and covered by a sheath preferably of polyester.
  • the core can be made of synthetic aramid fiber, which is a material commercially known under the name of "Kevlar" and can be advantageously treated in such a way as to have a significantly flattened shape.
  • Cords of this type are per se already known in the market and indeed are also used in slat blinds without orientation mechanisms fixed at their ends, and in particular they are used to support the slats themselves in intermediate positions with respect to the ends and to prevent this way their bending.
  • eyelets which have the function of guiding vertical cables for orienting the slats and are also involved, both in correspondence with said eyelets and in centralized positions between them, by facilitated bending points and opposite, so that the cord can be folded in a zig zag and can have the adjacent eyelets vertically aligned with each other and the central folding points of the various sections of cord comprised between the eyelets also aligned vertically with each other and interposed between the slat and lamella.
  • connection elements 18 comprising a block 20, which presents a substantially cylindrical cavity 22 with two opposite openings 24 on its lateral surface and by an axial projection 26, which starts from a base of the block 20, has a globally cylindrical shape and presents, on its head, a radial appendage 28.
  • This axial projection 26 is intended to engage in a hole 30 obtained in each end of the arm 6 of each support element 4 and presenting a radial notch 32, complementary to the radial appendage 28.
  • each cord 8,8' with the support elements 4 first involves binding the connecting elements 18 to the cord 8,8': for this purpose the portion of the cord presenting the predefined fold at each eyelet 16 is pulled inside the cylindrical cavity 22 so as to form a loop which is locked in place by inserting a small axial pin 34.
  • the eyelets 16 can advantageously constitute gripping elements to drag the portion of cord forming the loop folded inside the cylindrical cavity 22 of the corresponding connection element 18.
  • each connection element 18 is bayonet-bonded to one end of an arm 6, that is by inserting and rotating its axial projection 26 in the hole 30.
  • This constraint is carried out so that the two portions of cord 8,8', which protrude from each block 20, are turned towards the extreme opposite side of the same arm 6, as can be clearly seen in fig. 3 .
  • the position of the notch 32 on the hole 30 is determined so that for any angular position of the block 20 in all the actual working conditions there is no coincidence between the radial notch 32 of the hole 30 and the radial appendage 28 of the axial projection 26 and therefore to prevent any accidental disengagement of the connection element 18 from the arm 6.
  • connection elements 18 of the two cords 8,8' to the various arms 6 of each movement mechanism are fixed to the arms themselves in a manner that the cord 8 is constrained to the homologous ends of the arms 6 and the cord 8' is constrained to the opposite homologous ends of the arms themselves.
  • the slat blind according to the invention is intended to be guided with the ends along two vertical guides 36 which, thanks to the combination of all these characteristics concerning the movement and orientation mechanisms of the slats described above, allows to have the two cords 8,8' which do not protrude from the encumbrance of the arms 6 and therefore do not require that the lateral guides 36 have a greater width than the width necessary for the sliding of the supporting elements 4.
  • the two cords 8,8' are folded in a regular and orderly manner and are arranged on both sides of the arms 6 without interfering with each other.
  • the two cords 8,8' can also be arranged on the same side of the arms 6, provided that they are of such dimensions as not to interfere with each other when they are folded.
  • the ends of the arms 6 and the connection elements 18 are configured so that each connection element 18 can be selectively mounted on both sides of the respective arm 6, i.e. both on the side facing the lamella 2 and on the opposite side.
  • Each of the mechanisms for moving and orienting the slats 2 of the blind i.e. each set of arms 6 with the cords 8,8' applied, is slidably housed within the corresponding lateral guide 36.
  • Each of these guides 36 is constituted by a metal profile 38, preferably of extruded aluminum, is intended to be applied to a shoulder of the opening in the wall, in which the blind is to be installed, and is affected on the side facing the guide 36 opposed by a longitudinal slot 40, intended for sliding of the shafts 10 of all the support elements 4 fixed to a homologous end of the lamellae 2.
  • One of the two edges 42 of the longitudinal slot 40 is smooth, while the other 44 is shaped like saw teeth, i.e. it presents a plurality of teeth 46 defined by a lower side 48, and by an upper side 50, which is connected with the lower side of the overlying tooth 46.
  • the upper side 50 is configured so as to define a sort of stable support saddle for the shaft 10 of the corresponding support element 4.
  • the tooth pitch of the toothed edge 44 of the slot 40 that is the distance between corresponding points of the various teeth 46 is equal to the distance that the slats 2 have in a condition of maximum spacing.
  • the toothed edge 44 can be constituted by a single profile, preferably of plastic material, which can be inserted into a special longitudinal groove made in the metal profile 38 or, more advantageously, it can be constituted by single elements 51, each comprising only one tooth 46 and inserted one on top of the other in the edge of the profile 38.
  • the overall actuation methods of the slat blind according to the invention are similar to that of the traditional slat blinds: in the two lateral guides 36 there are two chains 52, which are constrained with an end to the lower slat of the blind or to a lower profile underlying it, are constrained at the other end to a body 60 sliding within a guide 62, obtained in the profile 38 and are returned to the upper end of the respective guide 36, by pinions 54, keyed to a shaft housed in a box provided in the upper part of the blind and also housing two wheels 56 which cause the opposite vertical movement of the two cords 8,8'.
  • the rotation and lifting movements of the slats 2 are carried out with a single command, in the sense that to lower the blind, the lower slat is lowered and each slat is consequently moved away from the overlying blind to the extent allowed by the extension of the successive sections of cords 8, 8'; subsequently, the traction of a single cord 8 and the release of the other cord 8' are controlled, so as to orient the spaced slats 2 in the desired manner.
  • the maneuver that leads to lowering the slats also causes them, due to the effect of gravity and their temporary unbalanced suspension towards the cord 8', to translate slightly towards the edge toothed 44 of the slot 40 and therefore to make the shafts of the subsequent support elements which are about to reach their final position progressively engage the upper side 50 of a tooth 46, which therefore supports the lamella by unloading the relative lengths of cord 8,8' by the traction otherwise exerted by the slats 2 below.
  • each lamella is supported in correspondence with each pair of support elements 4 not by the lengths of cord 8,8' constrained to the ends of the corresponding arms 6, but by the shafts 10 which rest on the teeth 46, thus eliminating any tensile stress on the cords 8,8' and ensuring a rigorously constant pitch between the various slats.
  • the pitch of the teeth 46 is equal to the pitch of the slats in the condition of spaced slats, but obviously this is an optimal condition, in which all the slats are supported by a pair of teeth 46 provided in the two lateral guides 36 of the blind.
  • the invention also provides that the pitch of the teeth can be multiple of the pitch of the slats and that only a part of these are supported by pairs of teeth, so that the weight that the lengths of cord 8,8' must support, is equal to an extremely low number of slats.
  • the pitch of the teeth may not be constant and that for example in the upper part of the blind it can be equal to the pitch of the slats and in the lower part, where the weight of the underlying part of the blind is less, it may be a multiple of the pitch of the lamellae.
  • the slat blind according to the invention eliminates all the drawbacks encountered in traditional slat blinds, and in particular:

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Building Awnings And Sunshades (AREA)
  • Tents Or Canopies (AREA)
  • Blinds (AREA)
EP22179293.0A 2021-12-21 2022-06-15 Store à lattes Pending EP4202172A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000031991A IT202100031991A1 (it) 2021-12-21 2021-12-21 Tenda a lamelle.

Publications (1)

Publication Number Publication Date
EP4202172A1 true EP4202172A1 (fr) 2023-06-28

Family

ID=80625282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22179293.0A Pending EP4202172A1 (fr) 2021-12-21 2022-06-15 Store à lattes

Country Status (2)

Country Link
EP (1) EP4202172A1 (fr)
IT (1) IT202100031991A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853169A (en) * 1973-10-29 1974-12-10 J Music Rotatable track-mounted shutter blinds
US3857433A (en) * 1972-03-23 1974-12-31 Matallbau Ag Zurich Foldable shutter
DE3638406A1 (de) 1985-12-10 1987-06-11 Baumann Rolladen Lamellenstore
EP1418306A2 (fr) 2002-11-06 2004-05-12 Oiles Corporation Store vénitien

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702333A1 (de) 2009-12-04 2011-06-15 Griesser Holding Ag Ganzmetall-Lamellenstore.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857433A (en) * 1972-03-23 1974-12-31 Matallbau Ag Zurich Foldable shutter
US3853169A (en) * 1973-10-29 1974-12-10 J Music Rotatable track-mounted shutter blinds
DE3638406A1 (de) 1985-12-10 1987-06-11 Baumann Rolladen Lamellenstore
EP1418306A2 (fr) 2002-11-06 2004-05-12 Oiles Corporation Store vénitien

Also Published As

Publication number Publication date
IT202100031991A1 (it) 2023-06-21

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