WO2007112821A1 - Dispositif pour couvrir des récipients ouverts - Google Patents

Dispositif pour couvrir des récipients ouverts Download PDF

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Publication number
WO2007112821A1
WO2007112821A1 PCT/EP2007/002043 EP2007002043W WO2007112821A1 WO 2007112821 A1 WO2007112821 A1 WO 2007112821A1 EP 2007002043 W EP2007002043 W EP 2007002043W WO 2007112821 A1 WO2007112821 A1 WO 2007112821A1
Authority
WO
WIPO (PCT)
Prior art keywords
base elements
connecting means
elements
base
sheath
Prior art date
Application number
PCT/EP2007/002043
Other languages
German (de)
English (en)
Inventor
Jörg Goldstein
Original Assignee
Rehau Ag + Co
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 Rehau Ag + Co filed Critical Rehau Ag + Co
Priority to EP07723129.8A priority Critical patent/EP1999321B1/fr
Publication of WO2007112821A1 publication Critical patent/WO2007112821A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/06—Safety devices; Coverings for baths
    • E04H4/08—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements
    • E04H4/082—Coverings consisting of rigid elements, e.g. coverings composed of separate or connected elements composed of flexibly or hingedly-connected slat-like elements, which may or may not be wound-up on a fixed axis

Definitions

  • the invention relates to a device for covering open containers with a liquid therein, in particular for covering swimming pools, comprising at least one segment which at least two base elements summarizes, wherein at least one of the base elements with one of its longitudinal sides with one of these at least one of the base elements is an end element which has a connection device at the longitudinal side opposite the longitudinal side connected to the connection means, in order to at least partially connect it to the end element of a further segment to be able to be connected rigidly.
  • EP 1 541 784 A1 such a device for covering a swimming pool is known.
  • This consists of individual segments, which in turn are composed of several basic elements.
  • the existing PVC base elements are connected to each other via polyurethane connecting means, wherein the connection between the base member and connecting means is cohesively.
  • the end elements have a different cross-sectional geometry from the base elements, and each have an integrally formed therewith connecting means.
  • the connecting device of two interconnected end elements in this case has a mutually complementary shape. While the connection via the connecting means is flexible, the connection via the end members is substantially rigid.
  • connection between the base elements and the connecting means has the disadvantage that a good and durable connection of the connecting means to the base elements is difficult to implement.
  • connecting means and base elements consist of completely different materials whose adhesion properties preclude a good connection.
  • the connecting means consists of an elastomeric material.
  • these materials are difficult to combine with other materials.
  • the only very small executable contact area between connecting means and base element for the bad connection is responsible.
  • the material of the base elements for the purpose of better buoyancy often has a porous structure, which again reduces the available contact surface for connection.
  • a failure of the connection between the base element and the connection means may already occur with only slight mechanical loads.
  • even the mechanical loads occurring during uncoiling and reeling from or onto a reeling device can lead to a failure of the connection and thus to a very limited service life of the covering device.
  • a poor connection of the connecting means to the base elements is disadvantageous. If, for example, the device lying on the water of the swimming pool is loaded in such a way that a person steps on the device or walks over the device, a poor connection may result in the connection between the connection means and the base element failing, and the person being created Gap in the device falls into the pool.
  • the device closes again due to the resilience of the elastic connecting means, whereby the failure point and thus at the same time the exit point is no longer recognizable for the person in the water. Especially for children, this results in a life-threatening situation.
  • the object of the invention is therefore to provide a device which avoids the disadvantages of the prior art.
  • the device of the type mentioned above is improved over the generic device in that the connecting means is at least partially positively connected at least one of the base elements. It has been found that in this way a stable, reliable and durable connection between the base element and connecting means can be realized.
  • the positive-locking surface can be varied over a wide range, so that it results in an optimized and extremely viable connection.
  • the connecting means may be advantageous for the connecting means to have a thickened end section on at least one free end. This geometry allows a particularly secure and reliable connection between the base element and connecting means.
  • the connecting means may have a cross-sectional length such that the base elements connected to one another via the connecting means are spaced apart from one another in an arrangement lying substantially next to one another in a plane. This results in a certain mobility of the interconnected via the connecting means basic elements, which is advantageous for example for the winding and unrolling of the device.
  • the connecting means has a cross-sectional length in such a way that the base elements connected to one another via the connecting means are spaced apart from one another at substantially the side by side in a plane arrangement at the top or bottom.
  • the connecting means has at least one passage opening. This allows effective drainage of the top of the device.
  • the connecting means consists of a polymeric material. These materials are relatively easy to work with very good mechanical properties and low price. It can be advantageous that the connecting means consists of an elastomeric or elastomeric material, preferably of polyurethane, a thermoplastic elastomer, flexible PVC, silicone rubber and the like. These materials are characterized by a particularly high flexibility.
  • the base elements have a substantially trapezoidal cross-sectional geometry with an upper side and a lower side.
  • this geometry which is modeled on a ship's hull, has very good floating properties.
  • top and bottom are convex. This has a favorable effect on the floating properties of the base element.
  • the base elements have a holding section at least on one of their longitudinal sides. This holding section serves to arrange the connection means on the base elements.
  • the holding section may be arranged substantially in the middle of the longitudinal sides. This results in a particularly high mobility of adjacent base elements against each other, which favors, for example, a two-sided windability at low winding radii.
  • the holding portion may also be useful for the holding portion to be operatively connected to the thickened end portion of the connecting means. This arrangement allows a particularly stable and reliable connection with the connecting means.
  • the holding portion and the thickened end portion of the connecting means have a mutually complementary shape.
  • the connecting device is formed integrally with the base elements. This allows a very simple production of the connecting device. It may also be advantageous that the connecting device of two interconnected end elements has a complementary shape to each other. This results in a particularly effective and space-saving type of connection.
  • connection of two end elements with mutually complementary connection means is positively. This results in a very stable and durable connection.
  • the end elements may also be advantageous for the end elements to have a cross-sectional geometry such that the connection of two end elements with a connection device that is complementary to one another leads to a cross-sectional geometry that substantially corresponds to the cross-sectional geometry of a base element. This results in a very uniform appearance, and there are still advantages in terms of the windability of the device.
  • the base elements of a polymeric material preferably of polyvinyl chloride (PVC), PU (polyurethane), acrylonitrile-butadiene-styrene (ABS), polystyrene (PS), polypropylene (PP), polyethylene (PE) or their Block copolymers exist.
  • PVC polyvinyl chloride
  • PU polyurethane
  • ABS acrylonitrile-butadiene-styrene
  • PS polystyrene
  • PP polypropylene
  • PE polyethylene
  • the base elements are buoyant and preferably have a porous or foam structure. This results in high buoyancy base elements which give the device very good buoyancy properties.
  • the density in the center of the base elements is lower than in the areas spaced from the center. As a result, overall a lower density of the base elements and thus a better buoyancy can be realized.
  • the density of the base elements steadily increases from the center to the outside. As a result, a high inherent rigidity of the base element can be achieved with reduced density.
  • the bulk density of the material of the base elements is between 0.1 and 0.9 g / cm 3 . This results in a very good buoyancy of the base elements.
  • the base elements are surrounded by a shell. This brings advantages, for example with regard to improved mechanical stability or a lower susceptibility to soiling of the base elements.
  • the material of the shell has a higher density than the material of the base elements. This results in improved properties of the shell, for example, diffusion barrier properties to prevent water absorption.
  • the shell is made of a compact material.
  • the existing of compact or solid shell has, for example, particularly good diffusion barrier properties.
  • the materials of the base elements and the shell are different. This results in a targeted adaptation of the materials and their properties to the specific requirements of the base element or the shell.
  • the shell consists of a polymeric material, preferably of polyvinyl chloride (PVC), polymethylmethacrylate (PMMA), polypropylene (PP), acrylonitrile-styrene molding compounds (ASA), polyethylene (PE), polycarbonate (PC ), Acrylonitrile-butadiene-styrene (ABS) or their block copolymers.
  • PVC polyvinyl chloride
  • PMMA polymethylmethacrylate
  • PP polypropylene
  • ASA acrylonitrile-styrene molding compounds
  • PE polyethylene
  • PC polycarbonate
  • ABS Acrylonitrile-butadiene-styrene
  • the shell has a layer thickness between 0.1 and 1, 0 mm, preferably 0.3 mm. At these layer thicknesses, the intended effect of the sheath is achieved, the layer thickness at the same time being small enough not to substantially increase the overall density of the base element and sheath. It may also be advantageous that the shell is at least partially positively and / or materially connected to the base elements. This results in a reliable and permanent connection between base element and shell.
  • the base elements are completely surrounded by the shell with respect to their circumferential direction. From this follows, for example, a particularly good diffusion barrier effect of the shell.
  • the total density of the sheathed base elements is less than or equal to 0.9 g / cm 3 . This results in a very high buoyancy and a correspondingly good buoyancy of the base elements provided with the shell.
  • the volume fraction of the base elements surrounded by the shell or having a foam structure is greater than or equal to 90%. As a result, a very low density is achieved overall, which leads to a high buoyancy of the coated base elements.
  • the device can be produced in an extrusion process, preferably in a coextrusion process.
  • the extrusion process or coextrusion process permits the particularly economical production of the device.
  • Figure 1 a embodiment of a segment of the device according to the invention in cross section
  • FIG. 1b shows the detail X from FIG. 1a
  • FIG. 1c showing a further detail of the device according to the invention.
  • Figure 2 embodiment of a segment of the device according to the invention according to Figure 1a in plan view
  • Figure 3 shows a cross-sectional view of the embodiment of a segment of the device according to the invention with a arranged on an end member further segment in the wound state
  • FIG. 1a shows an embodiment of a segment 1 of the device according to the invention.
  • the segment 1 comprises four base elements 2, 2 ', of which two end elements 2' are integrally formed with these, mutually complementary connection means 4, 5. Another number of base elements 2 and end elements 2 'is also possible.
  • the connecting means 4, 5 are not integrally formed with the end elements 2 ', and for example, are positively or materially connected thereto.
  • the base elements 2 have e.g. a height of 14 mm.
  • the base elements 2 are connected to one another or to the end elements 2 "via connecting means 3.
  • the connecting means 3 have a dogbone-like geometry with thickened end sections 31 with regard to their cross section.
  • the holding sections 9 of the base elements 2, 2 ' have a thickened end sections 31
  • the cross-sectional geometries of connecting means 3 and holding sections 9 are also possible
  • the cross-sectional shape of the base elements 2 is essentially trapezoidal, and the upper side 7 and the lower side 8 of the base elements 2, 2 'are convex
  • the upper side 7 has a width of 63 mm, for example, while the lower side 8 has a width of 61.6 mm.
  • the holding portions 9 are arranged substantially in the middle of the longitudinal sides of the base elements 2, 2 ', wherein other positions along the longitudinal sides are conceivable.
  • the length of the connecting means 3 is for example about 11 mm and is dimensioned so that the base elements do not touch in the adjacent flat state.
  • the cross-sectional geometry of the end elements 2 ' is such that when the corresponding end elements 2' are connected with mutually complementary connection devices 4, 5, essentially the cross-sectional geometry of a base element 2 is obtained. Other cross-sectional geometries of the end elements 2 'are also possible.
  • the connecting devices 4, 5 are designed as a male connecting device 4 at one end element 2 'and as a female connecting device 5 at the other end element 2'.
  • the male connecting device 4 has the shape of a ball head, with a diameter of for example 6 mm, but other dimensions or other geometries are conceivable.
  • the base elements 2, 2 'are made of foamed, floatable polyvinyl chloride having a density of about 0.55 g / cm 3 , while the connecting means 3 are made of polyurethane. Other materials or other densities are possible.
  • the base elements 2, 2 'are surrounded with respect to their circumference by an approximately 0.3 mm thick shell 10 made of solid solid PVC material with a density of approximately 1.4 g / cm 3 . Other thicknesses and densities of the envelope 10 are also conceivable.
  • the shell 10 is positively and materially connected to the base elements 2, 2 ', wherein a purely positive or a purely cohesive connection is conceivable.
  • the casing 10 Only in the area of the holding sections 9 does the casing 10 have an interruption in this embodiment, ie in this area the basic elements 2, 2 'are uncoated.
  • the total density of the base elements with the surrounding shell 10 is for example 0.6 g / cm 3 .
  • the shell 10 surrounds the base elements 2, 2 'fully circumferentially, so that in the region of the holder sections 9, the shell 10, the base elements 2, 2' covers.
  • the segment 1 is produced in a coextrusion process, whereby other production methods are also conceivable.
  • FIG. 1b shows the detail X from FIG. 1a.
  • This is an enlarged view of the connecting means 3 between two connected via this base elements 2, 2 '.
  • the casing 10 has interruptions in the region of the holding sections 9. A continuous wrapping of the base elements 2, 2 'with respect to their circumference, ie also in the region of the holding sections 9 is conceivable.
  • the holding sections 9 have a cross-sectional geometry which is complementary to the cross-sectional geometry of the thickened end sections 31 of the connecting means 3.
  • FIG. 2 shows the embodiment of a segment 1 of the device according to the invention according to FIG. 1 a in plan view.
  • the segment 1 is elongated, and the base element 2, 2 "forming the segment 1 and also elongated are connected to one another over their entire length via the connecting means 3.
  • the elongate base elements 2, 2 ' are interconnected only in sections via the connecting means 3.
  • the connecting devices 4, 5 formed integrally with the end elements 2' also extend over the entire length of the end elements 2 ', but it is
  • the connecting means 3 have through-openings 6.
  • These through-holes 6 have the shape of a long hole with a length of, for example, 3 mm and a width of, for example, 2 mm
  • Other geometries of the through-openings 6 are also possible
  • Opening openings 6 are arranged along the longitudinal extent of the segment 1, wherein in each case two adjacent passage openings 6 of the same connection means 3 have the same distance, for example 1000 mm, from each other.
  • Other arrangements of the through holes 6 are also conceivable.
  • FIG. 3 shows a cross-sectional representation of the embodiment of a segment 1 of the device according to the invention with an end element 2 'of another segment arranged on an end element 2' in the state wound onto a retractor 11.
  • the connections of the two end elements 2 'via the connecting devices 4, 5 results in a cross-sectional geometry that essentially corresponds to the cross-sectional geometry of the base elements 2.
  • the connection of the two end elements 2 ' is substantially rigid.
  • the device is used to cover a container with a liquid therein, and in particular for covering a swimming pool.
  • the base elements constituting the segments are connected to one another via flexible connection means, wherein the connection between the base element and connecting means is firmly bonded.
  • this type of connection has, among other things, the disadvantage that it is difficult to realize and moreover is not particularly stable and durable.
  • the known type of connection is disadvantageous.
  • the device according to the invention allows an extremely stable connection, which meets the highest safety requirements.
  • the base elements 2, 2 'and the connecting means 3 are positively connected with each other.
  • An effective type of interlocking connection is achieved, for example, by means of a connection means 3 having a substantially dog-bone-like geometry in cross-section, and the corresponding thickened end sections 31 being in engagement with the complementarily shaped holding sections 9.
  • any combination of materials can be realized relating to the connection means 3 and the base elements 2, 2 ', without taking into account their adhesion properties.
  • the materials can be chosen freely against the background of the most suitable properties for the application.
  • connecting means 3 can be combined with foamed thermoplastic materials which have a high porosity or low density and thus high buoyancy for the base elements 2, 2 '.
  • foamed thermoplastic materials which have a high porosity or low density and thus high buoyancy for the base elements 2, 2 '.
  • the density within the base element 2, 2 'vary from place to place, for example, the density in the center may be smaller than at the edge of the base element 2, 2'.
  • the smaller density in the center can be achieved by increasing the bubble size towards the center of the base element 2, 2 ', or with the same bubble size, the pore number in the center is higher than at the edge.
  • the tendency to absorb water of the base element can be reduced or even avoided by hydrophobic formulations of the material. This can also be achieved via a corresponding after-treatment of the base elements 2, 2 '.
  • the connecting means 3 is for example made of polyurethane, which is characterized on the one hand by a high flexibility. On the other hand, the material-typical restoring behavior of polyurethane - especially when the cover is extended - enhances the buoyancy effect of the base elements 2, 2 '.
  • the substantially trapezoidal cross-sectional geometry of the base elements 2 allows a two-sided application, and also a bilateral winding.
  • the convex shaped upper sides 7 and lower sides 8 bring advantages in terms of the floating properties of the base elements 2, 2 'and with regard to the drainage of the water surface facing away from the side. In addition, this form results in a better windability of the base elements 2, 2 '.
  • the windability of the base elements 2, 2 'on relatively small diameter retractors 11 is favored by the flexible connection means 3 with their specific length and their central arrangement with respect to the longitudinal sides of the base elements 2, 2' on the one hand, and on the other hand by the cross-sectional geometry of the end elements 2 '.
  • two interconnected via complementary connecting means 4, 5 end elements 2 ' have substantially the cross-sectional shape of a base member 2.
  • the complementary connecting devices 4, 5 of two end elements 2 ' are positively connected or connectable, whereby a simple realization of a plurality of interconnected segments 1, e.g. by mutual insertion is possible. However, other types of connection are also conceivable.
  • the substantially trapezoidal cross-sectional geometry of the base elements 2, 2 'with a slightly wider top 7 further promotes mutual support of the base elements under load in the direction of the top 7, for example, when a person is on the device located on the water surface of a swimming pool. By mutual support, the device is stabilized while being able to carry a higher load.
  • the shell surrounding the base elements 2, 2 1 is made of a polymeric material, for example of polyvinyl chloride.
  • the density of the shell 10 is significantly higher than the density of the base elements 2, 2 ', and preferably, the shell 10 is solid, ie consisting of a solid material executed. This makes it possible to realize a very smooth surface, which is much smoother than the surface of the porous material consisting of basic elements 2, 2 '.
  • the smooth surface is significantly less susceptible to dirt deposits.
  • the smooth surface allows surface water to drain faster.
  • the sheath allows an easy way to color design of the base elements 2,2 ', with a higher color stability is guaranteed.
  • the shell 10 assumes the function of a diffusion barrier and avoids the absorption of water by the porous material of the base elements 2, 2 '.
  • the sheath 10 can furthermore receive a special equipment which gives it or the device an increased UV stability or a dirt-repellent, so-called lotus effect.
  • the shell 10 also ensures that the mechanical stability of the base elements 2, 2 'is increased. Thereby, the porosity of the base elements 2, 2 '- without loss of the necessary inherent rigidity - be further reduced, which increases the buoyancy.
  • the total density of the coated base elements 2, 2' is significantly less than 1 g / cm 3 , preferably less than 0.9 g / cm 3 , and thus buoyant , This is achieved by a very thin shell 10 whose thickness is about 0.3 mm.

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Abstract

L'invention concerne un dispositif pour couvrir des récipients ouverts contenant un liquide, notamment des piscines, ce dispositif comprenant au moins un segment doté d'au moins deux éléments de base. Au moins un des éléments de base a un côté longitudinal relié de manière au moins partiellement mobile à un des côtés longitudinaux opposés d'un élément de base voisin, au moyen d'au moins un élément de liaison. Au moins un des éléments de base est un élément terminal qui comporte un dispositif de liaison sur le côté longitudinal opposé au côté longitudinal relié au moyen de l'élément de liaison, pour pouvoir être au moins partiellement relié de manière rigide, de préférence à l'élément terminal d'un autre segment. L'élément de liaison est au moins partiellement relié par complémentarité de forme avec au moins un des éléments de base.
PCT/EP2007/002043 2006-03-28 2007-03-09 Dispositif pour couvrir des récipients ouverts WO2007112821A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07723129.8A EP1999321B1 (fr) 2006-03-28 2007-03-09 Dispositif pour couvrir des récipients ouverts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200620004870 DE202006004870U1 (de) 2006-03-28 2006-03-28 Vorrichtung zum Abdecken von offenen Behältern
DE202006004870.7 2006-03-28

Publications (1)

Publication Number Publication Date
WO2007112821A1 true WO2007112821A1 (fr) 2007-10-11

Family

ID=38180333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/002043 WO2007112821A1 (fr) 2006-03-28 2007-03-09 Dispositif pour couvrir des récipients ouverts

Country Status (3)

Country Link
EP (1) EP1999321B1 (fr)
DE (1) DE202006004870U1 (fr)
WO (1) WO2007112821A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012212101B3 (de) * 2012-07-11 2013-07-11 Bayerische Motoren Werke Aktiengesellschaft Bauteilverbindung sowie Verfahren zum Herstellen einer Bauteilverbindung
EP3020890B1 (fr) * 2014-11-17 2017-11-08 Sonnenpool GmbH Volet de piscine
FR3114112B1 (fr) 2020-09-11 2023-01-27 Diffusion Equipements Loisirs couverture flottante pour le bassin d'une piscine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378608A (en) * 1980-11-26 1983-04-05 Duintjer Engbert J Apparatus for covering a liquid basin, and roller-blind type cover for use therein
US5941027A (en) * 1997-08-08 1999-08-24 Hallsten Corporation Access panel on deck structure
FR2795117A1 (fr) * 1999-06-16 2000-12-22 Carvalho Manuel De Ensemble d'elements pour la realisation de couvertures de piscines
EP1347124A1 (fr) * 2002-03-19 2003-09-24 Dominique Poirson Agencement pour la couverture et l'isolation thermique d'un bassin, et rideau de couverture pour un tel agencement
EP1541784A1 (fr) 2003-12-12 2005-06-15 Amaury de Troostembergh Volet de piscine
EP1731695A2 (fr) 2005-06-08 2006-12-13 Rehau S.A. Couverture articulée de protection pour la surface supérieure d'une piscine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681473A5 (fr) * 1990-03-15 1993-03-31 Aquamarq Ag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4378608A (en) * 1980-11-26 1983-04-05 Duintjer Engbert J Apparatus for covering a liquid basin, and roller-blind type cover for use therein
US5941027A (en) * 1997-08-08 1999-08-24 Hallsten Corporation Access panel on deck structure
FR2795117A1 (fr) * 1999-06-16 2000-12-22 Carvalho Manuel De Ensemble d'elements pour la realisation de couvertures de piscines
EP1347124A1 (fr) * 2002-03-19 2003-09-24 Dominique Poirson Agencement pour la couverture et l'isolation thermique d'un bassin, et rideau de couverture pour un tel agencement
EP1541784A1 (fr) 2003-12-12 2005-06-15 Amaury de Troostembergh Volet de piscine
EP1731695A2 (fr) 2005-06-08 2006-12-13 Rehau S.A. Couverture articulée de protection pour la surface supérieure d'une piscine

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Publication number Publication date
DE202006004870U1 (de) 2007-09-20
EP1999321B1 (fr) 2015-05-06
EP1999321A1 (fr) 2008-12-10

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