WO2007112825A1 - Dispositif pour couvrir des récipients ouverts - Google Patents

Dispositif pour couvrir des récipients ouverts Download PDF

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Publication number
WO2007112825A1
WO2007112825A1 PCT/EP2007/002118 EP2007002118W WO2007112825A1 WO 2007112825 A1 WO2007112825 A1 WO 2007112825A1 EP 2007002118 W EP2007002118 W EP 2007002118W WO 2007112825 A1 WO2007112825 A1 WO 2007112825A1
Authority
WO
WIPO (PCT)
Prior art keywords
base element
connecting means
elements
base
sheath
Prior art date
Application number
PCT/EP2007/002118
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
Publication of WO2007112825A1 publication Critical patent/WO2007112825A1/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
    • 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
    • E06B9/15—Roller shutters with closing members formed of slats or the like

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 is preferably connectable to at least one adjacent segment, and the segment at least one base element made of a buoyant, preferably comprises porous plastic material.
  • 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 basic elements consisting of polyvinyl chloride can be hollow or solid. They are connected by means of polyurethane connecting means firmly bonded together.
  • 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.
  • the possible hollow embodiment of the base elements has the disadvantage that the base elements must be provided at the end with caps which seal the base elements watertight to allow the device to float.
  • the end caps In addition to the increased manufacturing overhead for making these end caps, the end caps must be connected to the base elements, which is usually done by a very time consuming and costly gluing step.
  • the bond can be seen and defaced thus the overall picture of the device.
  • the materials of the base elements usually have a certain porosity in order to achieve the necessary buoyancy for the device to float. l
  • this porosity entails a very rough surface with cavities or undercuts, which is very susceptible to dirt.
  • the risk of water absorption is increased by the porous structure.
  • the mechanical stability of the base elements is lowered due to the porosity.
  • 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 base elements are at least partially surrounded by a shell whose material has a higher density than the material of the base member.
  • the density here denotes the quotient of mass and volume including the cavities contained in the volume.
  • the shell is made of a compact material.
  • compact here refers to a solid material that is substantially free of cavities,
  • the shell consisting of compact material has, for example, particularly good diffusion barrier properties for preventing water absorption by the base element.
  • the sheath consists of a polymeric material, preferably of polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), polypropylene (PP), polyethylene (PE), an acrylonitrile-styrene molding compound (ASA), polycarbonate ( PC), acrylonitrile-butadiene-styrene (ABS) or their block copolymers.
  • PVC polyvinyl chloride
  • PMMA polymethyl methacrylate
  • PP polypropylene
  • PE polyethylene
  • ASA acrylonitrile-styrene molding compound
  • PC acrylonitrile-butadiene-styrene
  • ABS acrylonitrile-butadiene-styrene
  • the shell has a layer thickness between 0, 1 and 1, 0 mm, preferably 0.3 mm.
  • the intended effect of the shell for example, the diffusion barrier effect is achieved, wherein the layer thickness is at the same time small enough so as not to substantially increase the total density of the base element and shell.
  • the shell is at least partially positively and / or materially connected to the base element. This results in a reliable and permanent connection between base element and shell.
  • the base element is completely surrounded by the shell with respect to a circumferential direction. From this follows, for example, a particularly diffusion barrier effect of the shell.
  • the density in the center of the base element 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 member steadily increases from the center toward the interior surface of the shell. As a result, a high inherent rigidity of the base element can be achieved with reduced density.
  • the density of the base member is 0.1 to 0.9 g / cm 3 . This results in a very good buoyancy of the basic elements.
  • the volume fraction of the porous or foam-containing base member 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. Also, it may be useful for the base element and shell materials to be 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 base element preferably consists of polyvinyl chloride (PVC), polyurethane (PU), acrylonitrile-butadiene-styrene (ABS), polystyrene (PS), polypropylene (PP), polyethylene (PE) or block copolymers thereof , These materials are relatively inexpensive and have good mechanical properties. However, combinations of these polymeric materials may also be used.
  • PVC polyvinyl chloride
  • PU polyurethane
  • ABS acrylonitrile-butadiene-styrene
  • PS polystyrene
  • PP polypropylene
  • PE polyethylene
  • the segment may also be advantageous for the segment to comprise at least two base elements provided with the shell, wherein at least one of the base elements is connected with one of its longitudinal sides to one of these longitudinal sides of an adjacent one of these base elements at least in sections movably via at least one connecting means.
  • At least one base element is an end element which has a connection device on the longitudinal side opposite the longitudinal side connected to the connection means. Due to the connecting device attached to the end element, the connection with the end element of another segment is possible in a simple manner.
  • the connecting device is formed integrally with the base elements. This allows a very simple production of the connecting device.
  • the connecting device of two interconnected end elements has a mutually complementary shape. This results in a particularly effective and space-saving type of connection.
  • connection of two end elements with complementary connection means is positively. This results in a more stable and durable connection.
  • the connecting means is at least partially positively and / or materially connected at least one of the base elements. This results in a very stable and reliable connection between the base element and connecting means.
  • connection means is connected to the base element in such a way that it projects through an opening in the envelope surrounding the base element. This makes it possible to achieve a particularly easy connection.
  • the connecting means has a cross-sectional geometry which substantially corresponds to the shape of a dog bone. This geometry allows a particularly secure and reliable connection between the base element and connecting means.
  • the connecting means may be advantageous for the connecting means to have a length such that the sheathed base elements which are connected to one another via the connecting means are spaced apart from one another in an arrangement lying essentially 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 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.
  • the connecting means consists of an elastomeric or elastomeric material, preferably of polyurethane (PU), a thermoplastic elastomer, soft polyvinyl chloride (plasticized PVC), silicone rubber and the like. These materials are characterized by a particularly high flexibility.
  • PU polyurethane
  • thermoplastic elastomer soft polyvinyl chloride
  • silicone rubber silicone rubber
  • the base element together with the envelope surrounding the base element, to 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, for example, very good floating properties.
  • top and bottom are convex. This affects u.a. favorable to the floating properties of the base element.
  • At least one transition from the top and / or the bottom to one of the longitudinal sides has a radius.
  • this improves the floating properties, on the other hand, this results in advantages with respect to the winding and unwinding of the device.
  • 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 is 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 section has in cross-section substantially the shape of the thickened end portion of the connecting means. This geometry allows a particularly stable and reliable connection with the connecting means.
  • the end elements together with the envelope surrounding them have a cross-sectional geometry such that the connection of two end elements with mutually complementary connection devices leads to a cross-sectional geometry which substantially promises the cross-sectional geometry of a base element provided with the shell.
  • 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. 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, for example, 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 dog-bone-like geometry with thickened end sections 31 with respect to their cross-section.
  • the holding sections 9 of the base elements 2, 2 ' have a cross-sectional geometry complementary to the thickened end sections 31 of the connecting means 3, so that connection means 3 and base elements 2, 2' are positively connected with each other. This form-fitting can also be present only in sections. Other cross-sectional geometries of connecting means 3 and holding sections 9 are also possible.
  • the connection between connecting means 3 and base element 2, 2 1 may also be a combination of positive and cohesive connection.
  • the cross-sectional shape of the base elements 2 is substantially trapezoidal, and the top 7 and the bottom 8 of the base elements 2, 2 'are convex. Due to the trapezoidal geometry, the top 7 is slightly wider than the bottom 8. The top 7 has, for example, a width of 63 mm, while the bottom 8, for example, has a width of 61, 6 mm. Other dimensions or other geometries of the base elements 2, 2 'are conceivable.
  • 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 about 11 mm and is dimensioned so that the base elements 2, 2 'do not touch each other in the adjacent planar 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 2, 2 '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 shell 10 has interruptions in the area of the holding sections 9. A continuous wrapping of the base elements 2, 2 'with respect to their circumference, i. also in the area 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 elements 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 only partially interconnected via the connecting means 3.
  • the integrally formed with the end members 2 'connecting means 4, 5 also extend over the entire length of the end members 2', but it is also possible that the connecting means 4, 5 are arranged only in sections.
  • the connecting means 3 have through holes 6. These passage openings 6 have the shape of a slot having a length of, for example, 3 mm and a width of, for example, 2 mm.
  • 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 1 via the connecting devices 4, 5 results in a cross-sectional geometry that substantially 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 2, 2 'constituting the segments 1 are made of a hollow or solid plastic material.
  • both of the aforementioned embodiments of the base elements 2, 2 ' have disadvantages.
  • For hollow base elements 2, 2 ' it is necessary to provide these end with end caps, which is very expensive.
  • In solid construction it is necessary for the plastic material to have a porous or foam structure in order to achieve the low density necessary for high buoyancy.
  • the porous or foam structure is very susceptible to dirt deposits.
  • this structure promotes water absorption.
  • said structure results in a weakening of the material of the base elements 2, 2 '.
  • the device according to the invention overcomes the aforementioned disadvantages when using a porous material of the base elements 2, 2 ', in which the base elements 2, 2' are surrounded by a shell 10 whose material has a higher density than the material of the base element 2, 2 '.
  • the shell 10 is made of a solid solid material.
  • a very smooth shell surface can be achieved, which makes it much more difficult for dirt to accumulate.
  • the smooth surface allows surface water to drain faster.
  • the shell 10 allows easy possibility for color design of the base elements 2, 2 ', wherein a higher color stability is ensured.
  • the dense shell assumes the function of a diffusion barrier and avoids the absorption of water by the porous material of the base elements 2, 2 "The shell 10 can continue to get a special equipment that gives it 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 smaller than 1 g / cm 3 , preferably less than 0.6 g / cm 3 and thus buoyant. This is achieved by a very thin shell 10 whose thickness is about 0.3 mm.
  • a volume fraction of the porous or the foam structure of the base member 2, 2 'of greater than or equal to 90% is achieved.
  • the material of the shell 10 may differ from the material of the base element 2, 2 ', so that, for example, the material of the shell 10 is selected so that very specific surface properties are achieved with it, while the material of the base element 2, 2' primarily high buoyancy and must be significantly inferior.
  • the material of the shell 10 may also be provided with special equipment giving it outstanding surface properties, for example, the aforementioned lotus effect.
  • the base member 2, 2 ' is made of a material having a porous structure and has a density such that it is buoyant.
  • the density is between 0.1 and 0.9 g / cm 3 . It is possible that the density within the base element 2, 2 'varies, for example in that the center has a lower density than the edge. On the one hand, the smaller density in the center can be achieved by increasing the size of the bubble towards the center of the base element 2, 2 ', or with the same bubble size, the number of pores in the center is higher than at the edge.
  • the material weakening caused by the higher porosity is compensated by the stabilizing effect of the shell 10.
  • 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 mate-coma combinations 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.
  • highly elastic and flexible elastomers for the connection means 3 can be combined with the foamed and porous, preferably thermoplastic materials 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 degree of flexibility, and on the other hand has a pronounced restoring behavior, which enhances the buoyancy effect of the base elements 2, 2 '- in particular when extending the cover.
  • the substantially trapezoidal cross-sectional geometry of the coated base elements 2, 2 ' allows a two-sided application, and also a two-sided windability.
  • 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 with each other, whereby a simpler realization of several interconnected segments 1 is made possible.
  • other types of connection are also conceivable.
  • the substantially trapezoidal cross-sectional geometry of the enveloped base elements 2, 2 'with a slightly wider top 7 further promotes mutual support of the base elements 2, 2' at a load in the direction of the top 7, for example, when a person on the on the water surface of a swimming pool device provides. By mutual support, the device is stabilized while being able to carry a higher load.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Toys (AREA)
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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 qui peut être relié de préférence à au moins un segment voisin. Ce segment comporte au moins un élément de base en matière plastique pouvant flotter et de préférence poreuse. L'élément de base est au moins partiellement entouré d'une enveloppe dont la matière a une densité apparente supérieure à celle de l'élément de base.
PCT/EP2007/002118 2006-03-28 2007-03-10 Dispositif pour couvrir des récipients ouverts WO2007112825A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006004869.3 2006-03-28
DE200620004869 DE202006004869U1 (de) 2006-03-28 2006-03-28 Vorrichtung zum Abdecken von offenen Behältern

Publications (1)

Publication Number Publication Date
WO2007112825A1 true WO2007112825A1 (fr) 2007-10-11

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ID=38068502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/002118 WO2007112825A1 (fr) 2006-03-28 2007-03-10 Dispositif pour couvrir des récipients ouverts

Country Status (2)

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DE (1) DE202006004869U1 (fr)
WO (1) WO2007112825A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011000024U1 (de) * 2011-01-06 2011-03-17 SCHÜCO International KG Aufwickelbarer Rollladen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642937A1 (de) * 1976-09-24 1978-03-30 Houpt Friedhelm Rolladenstab
DE2756738A1 (de) * 1977-01-10 1978-07-13 Paul Kofler Auf dem wasser schwimmende abdeckung oder schutzvorrichtung, insbesondere fuer schwimmbaeder
US5067182A (en) * 1990-08-03 1991-11-26 Koelsch Lester M Swimming pool cover
FR2747717A1 (fr) * 1996-04-19 1997-10-24 Pagnac Guy Couverture enroulable pour piscine
FR2795117A1 (fr) * 1999-06-16 2000-12-22 Carvalho Manuel De Ensemble d'elements pour la realisation de couvertures de piscines
US20040003903A1 (en) * 2002-07-08 2004-01-08 Creative Extruded Products, Inc. Extruded rigid plastic storm shutter slat having a co-extruded rigid foam core
EP1541784A1 (fr) * 2003-12-12 2005-06-15 Amaury de Troostembergh Volet de piscine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024010A1 (de) * 1980-06-26 1982-01-07 Müller, Peter B., 8131 Kempfenhausen Abdeckung fuer schwimmbecken
CH681473A5 (fr) * 1990-03-15 1993-03-31 Aquamarq Ag
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642937A1 (de) * 1976-09-24 1978-03-30 Houpt Friedhelm Rolladenstab
DE2756738A1 (de) * 1977-01-10 1978-07-13 Paul Kofler Auf dem wasser schwimmende abdeckung oder schutzvorrichtung, insbesondere fuer schwimmbaeder
US5067182A (en) * 1990-08-03 1991-11-26 Koelsch Lester M Swimming pool cover
FR2747717A1 (fr) * 1996-04-19 1997-10-24 Pagnac Guy Couverture enroulable pour piscine
FR2795117A1 (fr) * 1999-06-16 2000-12-22 Carvalho Manuel De Ensemble d'elements pour la realisation de couvertures de piscines
US20040003903A1 (en) * 2002-07-08 2004-01-08 Creative Extruded Products, Inc. Extruded rigid plastic storm shutter slat having a co-extruded rigid foam core
EP1541784A1 (fr) * 2003-12-12 2005-06-15 Amaury de Troostembergh Volet de piscine

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