ES2881853T3 - Closing provision - Google Patents

Abstract

Closing arrangement (1) for an opening (2) of a cabinet, a refrigerating appliance, a building and the like, with at least one closing element (4) which is disposed in the opening (2) in a movable manner in it, presenting at least one free end of the closing element (4) at least one profiled element (9) in functional union with a guide element (3), presenting the material of the profiled element (9) and/or of the guide element (3) between 0.1% by weight and 30% by weight, with respect to the total weight of the material, of a component (K) corresponding to the general formula R1R2R3Si-[O-Si R4R5]n-O-SiR6R7R8 being R1 to R8 are the same or different and have been chosen from the group formed by hydrogen atoms and C1-C10 alkyl groups, with n having a value from 1 to 8,000, characterized in that the material of the profiled element (9) and/or of the guide element (3 ) has a dynamic friction coefficient μ of 0.01 to 0.06, preferably 0.02 to 0.05 according to DIN EN ISO 8295.

Description

DESCRIPTION

Closing provision

The invention relates to a closing arrangement for an opening of a cabinet, a refrigerating appliance, a building and the like according to the features of the preamble of claim 1.

Closure arrangements of this type are already known in the state of the art.

DE 102009016208 A1 discloses a closure arrangement for refrigerating appliances. This closure arrangement has a first and a second cover part, of which at least one cover part is movably configured, the cover parts being arranged in the closed state in one plane.

In this sliding cover system, the guiding of the mobile cover part is carried out by means of rollers, which roll in one or more roller tracks. As a result, friction when moving a lid part must be reduced and the possibility of optimum sealing as well as precise guidance of the lid must be possible.

The closing arrangements are configured in such a way that they can be operated manually by the user, the lid part to be opened respectively by hand can be moved from a closed position to an open position.

The drawback of this closure arrangement for refrigerating appliances is that, although it is true that by manually moving the lid parts from a closed position to an open position, the products that are in the cooling appliance can be removed, producing, however, in the movement, very high displacement forces for the closure elements by the rollers used, which hinder the user from simple or easy movement of the individual lid parts of the closure arrangement.

Another drawback of the closure arrangement according to the state of the art is that an improvement in the movement of the cover parts by using rollers housed with ball bearings increases the costs of such a cooling device, without the displacement forces for the closure elements are significantly reduced.

Another drawback is that in case of prolonged use, the roller tracks can get dirty, with dust or fine-grained materials, such as sugar, salt and the like, getting into them and leading to an increase in the displacement forces for closing elements, up to a blocking of the rollers.

Another drawback of refrigeration appliances is that, to reach the shelves positioned behind or above, the personnel climb into the closing arrangement and load them with a high weight. Due to the weight of people and products in the closing arrangements, the rollers are exposed to very high forces, which can lead, on the one hand, to damage or deterioration of the rollers or the roller tracks and, on the other hand, also to a damage of the cover parts, as well as to a risk of accident for the personnel.

Another closing arrangement for cabinets is disclosed in DE 29907856 U1. A closing arrangement is described for the accommodation of sliding and sliding elements, such as blinds, roller shutters or sliding doors, in at least one conduit path in the form of a U-rail in furniture with a base profile that can be fixed on the body of the furniture and a cover profile that can be joined with it to cover the fixing of the base profile on the body of the furniture.

This closing arrangement for generic cabinets must be able to be manufactured economically, furthermore it can be easily adapted to the respective purpose of use and therefore allow, in principle, an option for the accommodation of different sliding or sliding elements. This must be done because the slideway is designed in a separate rail element which is removably inserted into a recess in the base profile. In this case, the base profile can have a front and a rear cut-out.

A disadvantage of this guide device for cabinets is considered that the provision of a base profile, as well as a cover profile and an additional rail element leads to high manufacturing and assembly costs, as well as considerable logistical effort. in storage. This in particular taking into account the fact that different dimensions of cabinets with different decorations must be equipped with guiding devices of this type.

Another drawback is that the base profile and the rail element assigned to it can be used respectively only for a defined width of sliding and sliding elements.

Another drawback is that this closing arrangement can be mounted only in those cabinets in which the sliding and sliding elements can move in front of the cabinet body. In the assembly of sliding and sliding elements, such as blinds or roller shutters, which must be movable inside the cabinet bodies, these closing arrangements cannot be used.

Another drawback in the state of the art is considered that, in particular in the case of using sliding and sliding elements, such as blinds or roller shutters, certain inversion elements must be mounted with the closing arrangement, in which these elements must be housed. sliding and sliding in inside the cabinet, such as endless guide screws or angular elements.

When using the closing arrangement according to the state of the art, a great effort has to be made in this case for assembly and construction in order to adapt the guide device to the corresponding sliding and sliding elements, as well as to the body of the cabinet. . This concerns both the base profile and the cover profile, as well as the rail elements to be used separately and also the end pieces to be inserted at the free ends of the guide device.

Another drawback is that the forces for displacement of the sliding and sliding elements in the closure arrangement are very high and, due to abrasion of the individual elements or contamination by lubricants on the guide rails, present the same drawbacks as the closing provisions in refrigerating appliances.

EP 2042550 A discloses a slippery material, which can be obtained by extrusion of a starting material, which comprises an olefin-based polymer and a silicone compound as essential components, forming a part of the olefin-based polymer. a cross-linked material in the material capable of sliding, the cross-linked material forming domains for dispersion in the material capable of sliding to prevent uneven distribution of the silicone compound in the extrusion direction, the remaining fraction being located in the hot xylene reflux of material capable of sliding in a range between 33 and 75 percent by weight based on the total weight of material capable of sliding, the content of the silicone compound being located based on the total weight of material capable of sliding in a range between 5 and 20 percent by weight and the mean particle diameter of the domains being located in the section n transverse parallel to the extrusion direction in a range from 0.5 to 150 pm.

Document DE102008055840 A discloses a composition comprising

a) between 0.1 and 10% by weight of a non-cross-linked ultra-high molecular weight siloxane (hereinafter UHMW) with an average molecular weight above 300,000 g / mol and / or a kinetic viscosity above 200,000 mm ² s ^-1 determined according to DIN 51562 at 40 ° C,

b) between 0.1 and 5% by weight of a silicone oil with an average molecular weight of 5,000 g / mol to 100,000 g / mol, and / or a kinetic viscosity above 100 mm ² s ^-1 a 150,000 mm ² s ^-1 determined according to DIN 51562 at 40 ° C and

c) at least one polyoxymethylene polymer,

the respective amounts by weight referring to the total weight of the composition.

In this case, the uncrosslinked UHMW siloxane and / or component b) is a polydimethylsiloxane, the uncrosslinked UHMW siloxane having an average molecular weight of 300,000 g / mol to 1,000,000 g / mol, preferably 500,000 g / mol at 800,000 g / mol. The part of component a) is situated between 0.4 and 10% by weight, preferably between 4 and 9% by weight with respect to the total weight of the composition, the part of component b) being situated between 0 2 and 4.5% by weight, preferably between 0.8 and 4% and in particular between 1.9 and 3.5% by weight, respectively, relative to the total weight of the composition.

In this context the invention is applied, which has set itself the objective of overcoming the drawbacks of the state of the art and to indicate a closure arrangement that can be manufactured in a cost-effective and economical manner, which allows a low-noise, fast closure movement, as well as smooth of the closing elements and that presents a long useful life without additional maintenance measures.

According to the invention, this object is achieved by the features of claim 1. Other advantageous embodiments of the invention are indicated in the dependent claims.

The closure arrangement according to the invention for an opening of a cabinet, a refrigerating appliance, a building and the like with at least one closure element which is movably arranged in the opening, presenting at least one free end of the closure element closes at least one profiled element in functional connection with a guide element, the material of the profiled element and / or the guide element having between 0.1% by weight and 30% by weight with respect to the total weight of the material one component ( K) which corresponds to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , with R ¹ to R ^{8 being the} same or different and having been chosen from the group formed by hydrogen atoms and C ¹ -C ¹⁰ alkyl groups and presenting n a value of 1 to 8,000 is characterized in that the material of the profiled element and / or of the guide element has a coefficient of dynamic friction p of 0.01 to 0 .06, preferably 0.02 to 0.05 according to DIN EN ISO 8295. Therefore, they can pr Closure arrangements according to the invention may be provided which, depending on the size or weight, can always perform an optimal and easy movement of the closure arrangement. As a result, it can advantageously be achieved that the displacement forces required for the closing elements are clearly reduced by an order of magnitude of approximately between 20 and 95%, preferably between 40 and 80%.

A further advantage is considered that the closure arrangement according to the invention exhibits considerably reduced wear on the individual elements. Furthermore, the closure arrangement according to the invention is configured such that R ¹ to R ⁸ in the general formula of component (K) have methyl groups (-CH ³ ). This advantageously leads to the fact that a migration of the component (K) of the individual elements of the closure arrangement according to the invention.

Furthermore, it has proven to be advantageous if component (K) has a molecular weight of about 200 to 600,000 g / mol. Thanks to this advantageous configuration, it is possible to configure both the profile elements and the guide elements in such a way that the necessary displacement forces of the closing arrangement according to the invention are very low. Furthermore, within the framework of this invention, it is advantageous if component (K) has a molecular weight of approximately 100,000 to 600,000 g / mol, in particular of approximately 300,000 to 600,000 g / mol. In this advantageous configuration, the profile elements, the guide elements, the sealing elements, as well as the sliding elements are configured in such a way that the displacement forces of the closing arrangement according to the invention are even more reduced and also the lower manufacturing costs.

It has also proven to be advantageous if the material of the profiled element and / or the guide element has a coefficient of dynamic friction p according to DIN EN ISO 8295 of 0.01 to 0.06, preferably 0.02 to 0.05 when the surfaces they are smooth. Therefore, closure arrangements can be provided according to the invention which depending on the size or weight can always perform an optimal and easy movement of the closure arrangement.

In a further advantageous embodiment, the closing arrangement according to the invention is designed in such a way that the material of the profile element and / or the guide element exhibits a dynamic friction coefficient p according to DIN EN ISO 8295 after approximately 80,000 frictional movements 0.01 to 0.06, preferably 0.02 to 0.05 when the surfaces are smooth. The closure arrangement according to the invention therefore has a substantially higher wear resistance compared to the state of the art and is furthermore characterized in that it has a long service life without additional maintenance measures, without that essentially changes the coefficient of dynamic friction p.

The closure arrangement according to the invention is further characterized in that the profile element and / or the guide element are made of a polymeric material. By polymeric material we mean materials such as polyvinylchloride (PVC); polyolefin, such as polypropylene (PP) or polyethylene (PE); styrene-based polymer, such as polystyrene (PS) or styrene-butadiene copolymer predominantly styrene (SB) or acrylonitrile-styrene-acrylic ester copolymers (ASA) or acrylonitrile-butadiene-styrene copolymers (ABS) or styrene-acrylonitrile (SAINT); polybutylene terephthalate (PBT); polyethylene terephthalate (PET); polyoxymethylene (POM); polyamide (PA); polymethylmethacrylate (PMMA); polyphenylene oxide (PPO); polyetheretherketone (PEEK); polyphenylene sulfide (PPS); liquid crystal polymer (LCP); polyamideimides (PAI); polyvinylidene fluoride (PVDF); polyphenylene sulfone (PPSU); polyaryletherketone (Pa EK); polyacrylonitrile (PAN); polychlorotrifluoroethylene (PCTFE); polyetherketone (PEK); polyimide (PI); polyisobutene (PIB); polyphthalamide (PPA); polypyrrole (PPY); polytetrafluoroethylene (PTFE); polyurethane (PUR); polyvinyl alcohol (PVA); polyvinyl acetate (PVAC); polyvinylidene chloride (PVDC); and mixtures of at least two of these materials. Suitable fillers and / or reinforcing substances, which positively influence the mechanical properties, in particular glass fibers, glass spheres, but also fillers such as chalk, can be added to the polymeric material of the profile element and of the guide element. , Teflon and the like. The fillers and / or reinforcing substances are present in amounts of approximately between 5 and 50% by weight, preferably between 10 and 35% by weight, relative to the total mass.

The closing arrangement according to the invention also has at least one spacer element on the profile element and / or on the guide element. In this way it is possible to provide a closing arrangement according to the invention, which in addition to a full surface contact of the closing elements with the guide elements also allows a point contact, with even lower displacement forces for the elements. closing.

In a further advantageous embodiment of the closing arrangement according to the invention, at least one sliding element is arranged on the profile element and / or on the guide element. This advantageously reduces the displacement forces necessary for the movement of the closing elements of the closing arrangement according to the invention.

A further advantage of the closure arrangement according to the invention is considered that at least one sealing element is arranged on the profile element and / or on the guide element. This advantageously means that, for example in the case of using the closure arrangement in a refrigerating appliance, the cooled air in the interior space cannot escape through the closure arrangement into the hot sales room.

Furthermore, it has proven to be advantageous if the sealing element closes a gap between the profiled element and / or the guide element in an airtight and / or liquid-tight manner, which reduces, for example, the energy costs when using the closure arrangement according to the invention in a cooling apparatus.

Furthermore, it is advantageous if the sliding element and / or the spacer element and / or the sealing element is made at least in part of an elastic material.

In particular, it has proven to be advantageous if the sliding element and / or the spacer element and / or the sealing element is made of a soft and flexible polymeric material, comprising a mixture containing the less one natural rubber, polyisoprene rubber, poly (styrene-co-butadiene) rubber (SBR), polybutadiene rubber (BR), poly (isoprene-cobutadiene rubber (IBR), styrene-isoprene-butadiene rubber ( SIBR), ethylene propylene rubber (EPR), ethylene propylene diene rubber (EPDM), polysulfide, isobutylene / cyclopentadiene copolymer rubber, isobutylene / methylcyclopentadiene copolymer rubber, nitrile rubber, propylene oxide polymer , star branched butyl rubber and halogenated star branched butyl rubber, brominated butyl rubber, chlorinated butyl rubber, star branched polyisobutylene rubber, brominated star branched butyl (polyisobutylene / isoprene) copolymer rubber, poly ( isobutylene-co-p-methylstyrene) and halogenated poly (isobutylene-co-p-methylstyrene), halogenated poly (isobutylene-co-isoprene-co-p-methylstyrene), poly (isobutylene-co-isoprene-co-styrene), halogenated poly (isobutylene-co-isoprene-co-styrene), pol i (isobutylene-coisoprene-co-α-methylstyrene), halogenated poly (isobutylene-co-isoprene-co-α-methylstyrene) or mixtures of these.

This results, in addition to the simple and inexpensive manufacture of sealing elements of this type, optimum sealing functions and also low displacement forces of the sealing elements. However, the framework of the invention also includes that the sliding element and / or the spacer element and / or the sealing element is made of a thermoplastic elastomer, such as a hardened elastomer composition, chosen from the group of thermoplastic elastomers or based on olefin and / or urethane-based, olefin-based cross-linked thermoplastic elastomers, thermoplastic copolyesters, styrene block copolymers (SBS, SEBS, SEPS, SEEPS and MBS), as well as thermoplastic copolyamides, of materials plasticized, as well as mixtures of these.

The closure arrangement according to the invention is furthermore advantageously designed in such a way that the material of the spacer element and / or of the sliding element and / or of the sealing element is at least partly 0.1% by weight and 30% by weight, preferably between 1% by weight and 15% by weight, relative to the total weight of the material of a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O -Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , with R ¹ to R ^{8 being the} same or different and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ¹⁰ alkyl groups and presenting n a value from 1 to 8,000. Thanks to this advantageous configuration, a closure arrangement according to the invention can be provided, the individual elements of which can be produced respectively cost-effectively and economically, allowing a low-noise, fast, as well as smooth closing movement of the closure elements and It has a long service life without additional maintenance measures, compared to closure arrangements as known from the state of the art.

The closure arrangement according to the invention is now described in more detail with the aid of exemplary embodiments which do not limit the invention.

They show:

Figure 1: a perspective representation of a refrigerating appliance with a closure arrangement according to the invention;

Figure 2: a sectional representation of a wall of a refrigerating appliance with a closure arrangement according to the invention;

Figure 3: a sectional representation of a wall of another refrigerating appliance with a closure arrangement according to the invention;

Figure 4: a perspective representation of a cabinet with a closing arrangement according to the invention.

In FIG. 1, the closing arrangement 1 for an opening 2 of a cooling device is represented.

The refrigerating apparatus known per se has a total of four outer walls 11, which by arrangement at right angles to one another form the storage space for the products to be cooled. The opening 2 of the cooling device is covered by a closure arrangement 1, which in this embodiment is formed by two closure elements 4 movable relative to each other which are housed in such a way that they can be guided in guide elements 3. The guide elements 3 are arranged on frame elements 14 fixed on the outer walls 11.

The closing elements 4 are configured in this exemplary embodiment in such a way that the closing element 4 arranged on the left side of the cooling device is formed by a frame 5 comprising a plate 40 made of a transparent material, for example glass.

The closing element 4 on the right side of the cooling device has a frame 5, which is made of four profiled elements 9 joined by material bonding to each other, comprising a plate 40 of transparent polycarbonate polymer material.

The closing elements 4 are arranged in this exemplary embodiment so that they can move in the horizontal direction relative to each other in the guide elements 3, so that the closing element 4 shown on the right side of the cooling device can move when opening by means of the closing element 4 represented on the left side of the refrigerating appliance.

FIG. 2 shows a sectional representation of a wall 10 of a cooling device according to FIG. 1 with a closing arrangement 1 according to the invention.

The wall 10 of the cooling apparatus is formed by an outer wall 11, an inner wall 12 and an insulating element 13 arranged therebetween. A frame element 14 is arranged on the upper narrow side of the wall 10, which in this embodiment covers the free end of the outer wall 11 and is arranged at the free end of the inner wall 12 on the front side.

The closing arrangement 1 for the opening 2 of the cooling device has two closing elements 4, which are guided movably in the opening 2 in the guide element 3. The guide element 3 is configured in this embodiment in such a way that it has two conduction paths 31, 32 approximately U-shaped, arranged side by side. At the free ends of the closure element 4, profile elements 9 are arranged, which are respectively movably arranged in the U-shaped guide ways 31, 32 of the guide element 3.

The closing elements 4 are configured in this exemplary embodiment in such a way that the profiled element 9 has an approximately U-shaped housing for the plate 40, the plate 40 being configured as a transparent glass plate.

The closure arrangement 1 according to the invention is furthermore configured in this exemplary embodiment in such a way that the profiled element 9 has a spacer element 6 on at least one side facing the guide element 3. This spacer element 6 is configured and arranged in such a way that this side of the profiled element 9 is arranged at a distance from the guide element 3.

Furthermore, the spacer element 6 is configured with an approximately circular cross section and has a thickness of approximately 0.5 to 2.5 mm. Along the length of the profile element 9, a plurality of spacer elements 6 are arranged side by side.

In this exemplary embodiment, the profiled element 9 is made of the polymer material acrylonitrile-butadienestyrene (Ab s) and has approximately 5% by weight with respect to the total weight of a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , R ¹ to R ^{8 being the} same and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ^{10 alkyl groups} , n presenting a value greater than 1000. In this embodiment, component (K) also has a molecular weight of approximately 300,000 g / mol. Furthermore, the closure arrangement 1 according to the invention is configured in this exemplary embodiment in such a way that the material of the spacer element 6 has at least partly 1% by weight relative to the total weight of a component (K) which corresponds to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , R ¹ to R ^{8 being} different and having been chosen from the group formed by atoms of hydrogen and C ¹ -C ¹⁰ alkyl groups, with n having a value greater than 1000.

In this exemplary embodiment, the guide element 3 is made of polyvinylchloride (PVC) polymer material.

The closure element 4 of the closure arrangement 1 according to the invention is advantageously configured in such a way that the closure elements 4 can move in a reciprocating movement with little displacement forces in the proper use of the cooling apparatus.

It is also considered advantageous in the closing arrangement 1 according to the invention in this exemplary embodiment that it is possible to open and close the opening 2 of the cooling device over a long period of time without problems and without additional maintenance measures on the sealing element. closure 4, guide element 3 and the like.

In this exemplary embodiment, the material of the profiled element 9 has a coefficient of dynamic friction p according to DIN EN ISO 8295 of 0.02 when the surfaces are not smooth.

The closing arrangement 1 according to the invention is characterized in that, when appropriately used in this cooling device, the material of the profiled element 9 exhibits after approximately 80,000 frictional movements a dynamic friction coefficient p according to DIN EN ISO 8295 of 0.04. In this way, a closure arrangement 1 according to the invention can be realized which can be produced economically and economically, has a long service life without additional maintenance measures and in which it is possible to open or close the aperture 2 of the cooling apparatus with significantly reduced displacement forces. In this exemplary embodiment, a reduction of the displacement forces of the closing element 4 of approximately between 40 and 50% can be achieved.

In FIG. 3 a sectional representation of a wall 10 of a further cooling device according to a closing arrangement 1 according to the invention is represented.

In this exemplary embodiment, the cooling device has a single-layer wall 10, which has guide elements 3 at its free end, arranged for example in the manner of a ladder.

The closure arrangement 1 is configured in this exemplary embodiment in such a way that it has two closure elements 4 arranged one above the other, which close an opening 2 of the cooling device and which are mounted in a movable manner in the guide element 3.

The closure arrangement 1 according to the invention has two closure elements 4 configured approximately in the same way, comprising a plate 40 of transparent polymeric material polymethylmethacrylate (PMMA), which are arranged at their free ends respectively in a profiled element 9 .

The profiled element 9 is configured in this embodiment with an approximately U-shaped cross section and surrounds with its two arms respectively a free end of the plate 40 of the closing element 4.

In this exemplary embodiment, the guide element 3 is also configured with a U-shaped cross section and covers the profile element 9 of the closure element 4 over the entire surface.

The profiled element 9 of the closure element 4 is connected in this embodiment by material bonding by means of known per se gluing with the plate 40 of the closure element 4 and has a sealing element 7 at its free ends opposite the plate 40 , as well as a sliding element 8.

The sealing element 7 of the profiled element 9 is made in this embodiment of polyethylene (PE) polymer material and is arranged on the profiled element 9 along its entire length. The sealing element 7 is arranged positively in the profile element 9 and is configured as a hollow chamber profile with a hollow chamber 70.

A sliding element 8 is arranged at the free ends of the profile element 9 opposite the sealing element 7 of the closing element 4, which is also arranged on the profile element 9 along its entire length and is configured with a roughly semicircular cross section.

The sliding element 8 has 2% by weight relative to the total weight of the material of a component (K) which corresponds to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O- SiR ⁶ R ⁷ R ⁸ , R ¹ -R ^{8 being the} same and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ¹⁰ alkyl groups, presenting n a value greater than 1000. The component (K) of the element material glidant 8 has a molecular weight of approximately 400,000 g / mol.

In this embodiment, the sealing element 7 has approximately 4% by weight relative to the total weight of the material, a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , with R ¹ -R ^{8 being} different and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ¹⁰ alkyl groups, with n having a value greater than 1000. The component ( K) of the material of the sealing element 7 has a molecular weight of approximately 500,000 g / mol.

Furthermore, in this embodiment the guide element 3 is made of the polymeric material polyvinylchloride (PVC) and has a 5% by weight relative to the total weight of the material of the ^t elemen or guide 3 a component (K) corresponding to the formula general R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , with R ¹ -R ^{8 being the} same and presenting methyl groups (CH ³ ), with n presenting a higher value to 1000. The component (K) of the material of the guide element 3 has a molecular weight of approximately 600,000 g / mol.

Thanks to this advantageous configuration, the material of the guide element 3 has a coefficient of dynamic friction M according to DIN EN ISO 8295 of 0.03.

Furthermore, the closing arrangement 1 according to the invention is configured in this exemplary embodiment in such a way that the material of the sliding element 8 exhibits a dynamic friction coefficient m according to DIN EN ISO 8295 of 0 after approximately 80,000 movements with friction. , 03 when the surfaces are smooth. In FIG. 4 a perspective representation of a cabinet with a closing arrangement 1 according to the invention is represented.

The cabinet has a lower bottom 24, to which the side wall 21, the side wall 23 and the rear wall 25 are fixed. At the free ends of the side wall 21, 23 and of the rear wall 25 opposite the bottom bottom 24 The upper bottom 22 is arranged. The lower bottom 24, the side wall 21, 23 and the upper bottom 22 delimit an opening 2 of the cabinet.

A closure arrangement 1 according to the invention is arranged in the opening 2 of the cabinet, which has a closure element 4.

The closure element 4 is arranged in this embodiment movably on a guide element 3, the guide element 3 being arranged both on the lower bottom 24 and on the upper bottom 22 of the cabinet.

In this exemplary embodiment, the closure element 4 is formed by several second profiled elements 42 movably connected to one another and is designed as a roller blind mat known per se. The closing element 4 is movably arranged in the horizontal direction in the opening 2 of the cabinet in the guide elements 3 and can be moved from a closed position not shown on the side wall 23 to the open position shown.

The guide element 3 is configured in this exemplary embodiment with a U-shaped cross section and houses the respectively free ends of the profile elements 42 of the closure element 4.

The closing arrangement 1 for the opening 2 of a cabinet is configured in such a way that the material of the element Guide 3 presents approximately 5 % by weight with respect to the total weight of the material of a component (K) that corresponds to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , having chosen different R ¹ -R ³ and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ¹⁰ alkyl groups, presenting n a value greater than 1000.

In this exemplary embodiment, the guide element 3 is made of polypropylene polymer material, with R ¹ -R ³ in the general formula of component (K) having methyl groups (CH ³ ) and a molecular weight of approximately 100,000 g / mol.

It has turned out to be extremely advantageous that the material of the guide element 3 has approximately 5% by weight of the component (K), since in case of proper use of this cabinet and opening and closing the closing element 4, the material of the element Guide 3 still has a dynamic friction coefficient p according to DIN EN ISO 8295 of 0.06 after approximately 80,000 frictional movements when the surfaces are smooth, whereas in the known state of the art guide elements of this type have coefficients of substantially higher dynamic friction or have greater material wear due to abrasion.

However, the framework of the invention also includes that the material of the profiled element 42 of the closure element 4 has approximately 10% by weight relative to the total weight of the material of a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , R ¹ -R ⁸ having been chosen the same or different and having been chosen from the group consisting of hydrogen atoms and C alkyl groups ¹ -C ¹⁰ .

Thanks to the closing arrangement 1 according to the invention, which can be produced cost-effectively and economically, therefore a low-noise, fast, as well as smooth closing movement of the closing elements 4 of cabinets, appliances is possible refrigerants, buildings and the like, presenting these a long useful life without additional maintenance measures.

Furthermore, the sealing arrangement 1 according to the invention is characterized in that it exhibits a substantially higher wear resistance and that a change in the dynamic friction coefficient p according to DIN EN ISO 8295 can hardly be detected under continuous load, due to example after 80,000 friction movements.

A further advantage of the closing arrangement 1 according to the invention is that when used appropriately, in particular in cooling appliances, the dynamic friction coefficient p according to DIN EN ISO 8295 is not affected by the use of cleaning agents. or chemical substances and because the closing elements 4 can be operated even with very low displacement forces, also after continuous loading of several months.

Claims (8)

1. Closing arrangement (1) for an opening (2) of a cabinet, a refrigerating appliance, a building and the like, with at least one closing element (4) which is arranged in the opening (2), so that can move in it, at least one free end of the closing element (4) presenting at least one profiled element (9) in functional connection with a guide element (3), presenting the material of the profiled element (9) and / or of the guide element (3) between 0.1% by weight and 30% by weight, with respect to the total weight of the material, of a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ R ¹ to R ^{8 being the} same or different and having been chosen from the group formed by hydrogen atoms and C ¹ -C ¹⁰ alkyl groups, presenting n a value of 1 to 8,000, characterized in that the material of the profiled element (9) and / or The guide element (3) has a dynamic friction coefficient p of 0.01 to 0.06, preferably 0.02 to 0.05 according to DIN EN ISO 8295. Closure arrangement (1) according to claim 1, characterized in that R ¹ to R ⁸ in the general formula of component (K) have methyl groups (-CH ³ ). Closure arrangement (1) according to one of the preceding claims, characterized in that the component (K) has a molecular weight of approximately 200 to 600,000 g / mol. Closure arrangement (1) according to one of the preceding claims, characterized in that the material of the profile element (9) and / or of the guide element (3) has a dynamic friction coefficient p of 0 after approximately 80,000 frictional movements 0.01 to 0.06, preferably 0.02 to 0.05, according to DIN EN ISO 8295. Closing arrangement (1) according to one of the preceding claims, characterized in that at least one spacer element (6) is arranged on the profile element (9) and / or on the guide element (3). Closing arrangement (1) according to one of the preceding claims, characterized in that at least one sliding element (8) is arranged on the profile element (9) and / or on the guide element (3). Closure arrangement (1) according to one of the preceding claims, characterized in that at least one sealing element (7) is arranged on the profile element (9) and / or on the guide element (3). Closing arrangement (1) according to claims 5 to 7, characterized in that the material of the spacer element (6) and / or of the sliding element (8) and / or of the sealing element (7) has at least partly between 0.1% by weight and 30% by weight, with respect to the total weight of the material, of a component (K) corresponding to the general formula R ¹ R ² R ³ Si- [O-Si R ⁴ R ⁵ ] ⁿ -O-SiR ⁶ R ⁷ R ⁸ , with R ¹ to R ^{8 being the} same or different and having been chosen from the group consisting of hydrogen atoms and C ¹ -C ¹⁰ alkyl groups, n having a value of 1 to 8,000.