Cabinet furniture with locking mechanism

Abstract

Cabinet furniture (1) and the like, with at least one locking device (2) in particular blinds, roller shutters and the like., which is arranged in the area of ​​at least one opening (10) to be movable from a closed position (GP) to an open position (OP) and back, which is operatively connected to at least one guide device (5) arranged at the opening (10), which has lamellar elements (20), wherein the lamellar elements (20) each have at least one connecting device (4,4') on their end faces, wherein the connecting device (4,4') has at least one receiving element (6,7) with at least one first opening (41) and at least one second opening (42), characterized in that at least two connecting devices (4,4') arranged side by side in the closing device (2) are connected to each other via at least one separate connecting element (5) arranged in the first opening (41) of the first connecting device (4) and the second opening (42) of the second connecting device (4').

Description

[0001] The invention relates to a cabinet and the like, with at least one locking device, in particular a blind, roller shutter and the like, which is arranged in the area of ​​at least one opening to be movable from a closed position (GP) to an open position (OP) and back, according to the features of the preamble of claim 1.

[0002] Such cabinet furniture with locking mechanisms has proven its worth for many years and is known in various designs.

[0003] DE 102017000214 A1 discloses a cabinet furniture with a locking arrangement, comprising a slatted blind which is arranged in the area of ​​an opening of a cabinet furniture so as to be movable from a closed position to an open position and back, and which has slats arranged parallel to each other which are movable in lateral guides during their opening and closing movement, wherein the lateral guides of the slats are formed by respective guide tracks which have a first essentially straight vertical or horizontal guide track and a second guide track which is oriented essentially orthogonally to the first guide track, so that at least a part of the slats of the blind can be moved from a closed position to an open position located inside the cabinet, in which the slats are arranged one behind the other in a packed position parallel to each other.Furthermore, a second vertical or horizontal guide track is provided parallel to the first vertical or horizontal guide track, with a respective guide body of a lamella engaging in the second guide track.

[0004] The cabinet furniture with a locking arrangement is further designed such that the first vertical or horizontal guide track transitions into a first second guide track orthogonal to this with a curved corner area (E) and the second first vertically or horizontally oriented guide track transitions via an arc-shaped corner area (E1) into a second guide track orthogonal to the second first guide track.

[0005] A disadvantage of this cabinet furniture with a locking mechanism is that it is very expensive both in its manufacture and in its complex assembly.

[0006] A further disadvantage of this cabinet furniture with a locking mechanism is that it can only be installed if costly and technically demanding milling work has been carried out in the side walls and / or the top or bottom of the cabinet furniture.

[0007] Another disadvantage is that this cabinet furniture with a locking mechanism, for example in a cabinet, takes up a lot of space or storage space, which is then no longer available to the user.

[0008] Another disadvantage is that this cabinet furniture with a locking mechanism has a very sophisticated mechanical design and therefore must be manufactured with very tight tolerances, and is extremely maintenance-intensive, requires care and is prone to malfunctions in use.

[0009] This is where the invention comes in, which aims to overcome the disadvantages of the known prior art and to present a cabinet furniture with a locking arrangement that can be manufactured economically and sustainably, that is applicable for both horizontal and vertical use, that can be used for both new and replacement installations, and that is designed in such a way that a possible replacement of the slats is unproblematic and cost-effective.

[0010] This problem is solved according to the invention by the features of claim 1. Further advantageous embodiments are described in the dependent claims.

[0011] It has surprisingly been found that a cabinet or similar piece of furniture, with at least one closure device, in particular a blind, roller shutter, or the like, which is arranged in the area of ​​at least one opening to be movable from a closed position (GP) to an open position (OP) and back, which is operatively connected to at least one guide device arranged at the opening, which has slat elements, wherein the slat elements each have at least one connecting device on their end faces, wherein the connecting device has at least one receiving element with at least one first opening and at least one second opening, is characterized in that at least two connecting devices arranged side by side in the closure device are connected via at least one element arranged in the first opening of the first connecting device and the second opening of the second connecting device.separate connecting elements are connected to each other.

[0012] This makes it possible to provide cabinet furniture with a locking mechanism that can be manufactured economically and sustainably, that is suitable for horizontal and vertical use, and that can be used to close openings in new furniture as well as to close openings in existing furniture by replacement assembly.

[0013] A further advantage of this cabinet with a locking mechanism is that the individual components can be assembled very easily and quickly without tools. Another advantage is that the installed slat elements of this cabinet with a locking mechanism can be easily and cost-effectively replaced to suit the customer's design preferences.

[0014] Another advantage of the cabinet furniture with a locking mechanism is that it can not only be operated mechanically by hand, but can also be later operated electrically, for example, by motorization.

[0015] The cabinet furniture with a locking mechanism is further designed such that the connecting element is arranged in the opening of the receiving elements of the connecting device in a force-fit and / or form-fit manner. This results in efficient, quick and tool-free assembly of the locking mechanism.

[0016] It is also advantageous for the cabinet furniture to be designed with a locking mechanism such that the connecting element connects the opposing openings of the receiving elements of the connecting device in a force-fit and / or form-fit manner, allowing for rotational movement. In addition to the effective assembly of the locking mechanism, this design, when used as intended, is suitable for almost all types of cabinet furniture, particularly cabinet furniture, with regard to cabinet width, cabinet height, and locking device radii.

[0017] Furthermore, the cabinet furniture is designed with a locking arrangement such that the connecting element has at least one locking element.

[0018] The cabinet furniture with a locking mechanism is further designed such that the locking element of the connecting element engages the first opening of at least one receiving element of the connecting device in a locking manner. In addition to cost-effective and sustainable manufacturing of the individual components of the cabinet furniture with a locking mechanism, this advantageously makes the assembly of these components very simple and possible without tools.

[0019] Furthermore, the cabinet furniture with a locking mechanism is designed such that the connecting element has at least one base and a guide element projecting from it. Advantageously, this also leads to economical and sustainable manufacturing of the individual components.

[0020] Furthermore, the cabinet furniture with a locking mechanism is designed such that the connecting element has at least two locking elements spaced apart from each other by at least one opening. This makes the cabinet furniture with a locking mechanism very easy to assemble and, when used as intended, ensures both quiet operation and secure assembly.

[0021] Furthermore, the cabinet furniture with a locking mechanism is designed such that the connecting element has at least one cavity. This also leads to economical and sustainable manufacturing of the components.

[0022] The cabinet furniture with a locking arrangement is also designed such that the connecting device has a base and at least one receiving element arranged on it.

[0023] Furthermore, the cabinet furniture with a locking mechanism is designed such that the receiving element of the connecting device has at least one opening. Advantageously, the cabinet furniture with a locking mechanism is designed such that the receiving elements of the connecting device are connected to each other via at least one stiffening element. This enables economical and sustainable manufacturing of the individual components, while also optimizing the stability and strength of the connecting device.

[0024] It is also advantageous for the cabinet furniture with a locking mechanism to be designed such that the connecting device and / or the connecting element and / or the lamella elements are at least partially made of a polymeric and / or a thermosetting and / or a metallic and / or a ceramic material. This also enables economical and sustainable production of the components, and furthermore, the components, especially the locking mechanism, can be adapted to the respective requirements through an optimal selection of materials.

[0025] The material of the connecting device and / or the connecting element and / or the lamellar elements is based on polyolefin, such as polypropylene (PP) or polyethylene (PE); a styrene-based polymer, such as polystyrene (PS) or styrene-butadiene copolymer with a predominant styrene content (SB) or acrylonitrile-styrene-acrylate copolymers (ASA) or acrylonitrile-butadiene-styrene copolymers (ABS) or styreneacrylonitrile (SAN); polybutylene terephthalate (PBT); polyethylene terephthalate (PET); polyoxymethylene (POM); polyamide (PA); polycarbonate (PC); polymethyl methacrylate (PMMA); polyphenylene oxide (PPO); polyetheretherketone (PEEK); polyphenylene sulfide (PPS); liquid crystal polymer (LCP); polyamide-imides (PAI); polyphenylsulfone (PPSU); polyaryletherketone (PAEK); polyacrylonitrile (PAN); polyetherketone (PEK); polyimide (PI); polyisobutene (PIB); polyphthalamide (PPA); polypyrrole (PPY); Polyurethane (PUR); polyvinyl alcohol (PVA);Polyvinyl acetate (PVAC) is based on thermoplastic polymers based on olefins (TPE), such as thermoplastic polyurethane (TPU), and mixtures of at least two of these materials;

[0026] Suitable thermosetting materials include phenolic resin, urea resin or melamine resin, but also epoxy resins, crosslinkable polyurethanes and unsaturated polyester resins.

[0027] Suitable fillers and / or reinforcing materials can be added to the thermoplastic / thermoplastic material of the connecting device and / or the connecting element and / or the lamellar elements, which positively influence the mechanical properties, in particular glass fibers, glass beads, but also fillers such as chalk, talc, Teflon and the like.

[0028] The fillers and / or reinforcing materials are present in quantities of approximately 2 to 75 wt.%, preferably 5 to 45 wt.%, based on the total mass. This makes it possible for the first time to design the geometry of the connecting device and / or the connecting element and / or the lamellar elements and / or the closure device in an automated, economical, cost-effective, and visually appealing manner. By incorporating and varying the reinforcing materials into the material of the connecting device and / or the connecting element, the flexural stiffness and the modulus of elasticity, in particular, can be optimally adjusted and varied according to legal requirements as well as the required closure arrangement.

[0029] Metallic materials, as used here, refer specifically to alloys, particularly ferrous alloys such as steel, cast iron, and stainless steel, as well as non-ferrous metals such as copper, aluminum, and zinc. Also included are metallic materials made from non-ferrous alloys, such as brass and bronze.

[0030] The ceramic materials used are selected from clay ceramics, porcelain, technical ceramics, composite ceramics, oxide or non-oxide ceramics and the like.

[0031] Furthermore, the cabinet furniture with a locking mechanism is advantageously designed such that the material of the connecting device and / or the connecting element contains at least one of the following additives: stabilizers to improve resistance to light exposure, UV radiation, and weathering; stabilizers to improve thermal and thermo-oxidative resistance; stabilizers to improve hydrolytic resistance; stabilizers to improve acidolytic resistance; lubricants; demolding aids; coloring additives; crystallization-regulating substances and nucleating agents; flame retardants; impact modifiers; fillers; and / or plasticizers. The additives may advantageously comprise renewable raw materials in proportions of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%, as verified by mass balance analysis, e.g., using ISCC.

[0032] Alternatively, the locking mechanism, in particular, can be manufactured using an additive manufacturing process, such as 3D printing. Advantageously, machine-readable, three-dimensional models can be used for manufacturing the locking mechanism. The invention also includes a method for generating a machine-readable, three-dimensional model for use in a manufacturing process, especially for a locking mechanism. This method specifically includes inputting data, particularly representing a locking mechanism, into a data processing machine and using this data, in particular to represent a locking mechanism as a three-dimensional model, wherein the three-dimensional model is suitable for use in the manufacturing process, especially for a locking mechanism.The locking mechanism can be manufactured wholly or partially using a line-by-line or layer-by-layer manufacturing process. The use of a 3D dataset during assembly or manufacturing is highly advantageous. The process also includes a technique in which the input data from one or more 3D scanners, operating either on contact or non-contact (where, in the latter case, energy is emitted onto a locking mechanism and the reflected energy is received), is used to generate a virtual three-dimensional model, particularly of a locking mechanism, using computer-aided design software.The manufacturing process may include an additive powder bed process, in particular selective laser melting (SLM), selective laser sintering (SLS), selective heat sintering (SHS), selective electron beam melting (EBM / EBAM), or binder jetting. The manufacturing process may also include an additive free-space process, in particular metal deposition modeling (MDP), wax deposition modeling (WDM), contour crafting, metal powder deposition (MPA), plastic powder deposition, cold gas spraying, electron beam welding (EBW), or fused deposition modeling (FDM) or fused filament fabrication (FFF).The manufacturing process may include an additive manufacturing process using liquid materials, in particular stereolithography (SLA), digital light processing (DLP), multi-jet modeling (MJM), polyjet modeling, or liquid composite molding (LCM). Furthermore, the manufacturing process may include other additive layer-by-layer processes, in particular laminated object modeling (LOM), 3D screen printing, or light-controlled electrophoretic deposition.

[0033] The invention will now be described in more detail using the following non-limiting embodiments.

[0034] They show: Fig. 1: Perspective view of a cabinet with a locking mechanism in the closed position (GP); Fig. 2: Further perspective view of a cabinet with a locking mechanism in the open position (OP), Fig. 3: Rear view of a locking mechanism of a cabinet furniture, Fig. 4: Perspective partial sectional view of a locking mechanism of a cabinet furniture, Fig. 5: Perspective view of a connecting device of a locking mechanism of a cabinet furniture, Fig. 6: Perspective view of a connecting element of a locking mechanism of a cabinet furniture.

[0035] In the Fig. Figure 1 is a perspective view of a cabinet 1 with a locking mechanism shown in the closed position (GP).

[0036] The locking arrangement comprises at least one locking device 2, in particular a blind, roller shutter, or the like, which in this embodiment is arranged in a closed position (GP) in the area of ​​a concealed opening. Furthermore, in this embodiment, the cabinet 1 has a body 16 on which the locking device 2 is arranged.

[0037] The locking arrangement, with at least one locking device 2, has lamellar elements 20 which lie parallel to each other and conceal the non-visible opening of the cabinet furniture 1.

[0038] Furthermore, the locking arrangement with a locking device 2 is designed such that it is horizontally movable. The louver elements 20 are arranged via a handle element 18 and can be moved from right to left, i.e., from the closed position (GP) shown to an open position (OP), or from left (OP) to right (GP).

[0039] In the Fig. Two further perspective views of a cabinet 1 with a locking mechanism shown in the open position (OP).

[0040] The cabinet furniture 1, with at least one closing device 2, in particular a blind, roller shutter and the like, which is arranged in the area of ​​an opening 10 to be movable from a closed position (GP) to an open position (OP) and back, which is operatively connected to at least one guide device 5 arranged at the opening 10, which has slat elements 20, wherein the slat elements 20 each have at least one connecting device 4, 4' on their end faces, wherein the connecting device 4, 4' has at least one receiving element 6, 7 with at least one first opening 41 and at least one second opening 42, is characterized in that at least two connecting devices 4, 4' arranged side by side in the closing device 2 are connected via at least one opening 41 of the first connecting device 4 and the second opening 42 of the second connecting device 4'.separate connecting element 5 are connected to each other.

[0041] The cabinet furniture 1 comprises a furniture body 16 having an opening 10 and a locking device 2.

[0042] In this embodiment, the furniture body 16 is designed such that it has a side wall 11 and an opposite side wall 12, as well as a base 13 and an opposite top surface 14.

[0043] A back panel 15 is arranged on the side of the furniture body 16 opposite the opening 10 of the cabinet 1.

[0044] The closure element 2, in particular blinds, roller shutters and the like, has slats 20 arranged parallel to each other and is guided in at least one guide device 3 arranged at the opening 10 of the furniture body 16.

[0045] In this embodiment, the lamellae 20 of the closure device 2 are designed such that they each have a connecting device on their end faces, which is not visible here.

[0046] In this embodiment, the locking arrangement has a handle element 18 at one free end, with which the locking device 2 is arranged to be movable back and forth in the guide device 3.

[0047] In this embodiment, the cabinet furniture 1 is further designed such that it has a cover element 17 on the top surface 14 and on each side wall 11, 12.

[0048] The locking device 2 of the locking arrangement is designed in such a way that, when used as intended, it can be moved in a vertical movement over the handle element 18 from bottom to top, i.e. from the closed position (GP) to an open position (OP) or from top (OP) to bottom (GP).

[0049] In the Fig. 3 View of a locking mechanism of a cabinet furniture shown from the rear.

[0050] The locking arrangement of a cabinet 1, comprising at least one locking device 2, in particular a blind, roller shutter, or the like, which is arranged in the area of ​​an opening 10 to be movable from a closed position (GP) to an open position (OP) and back, and which is operatively connected to at least one guide device 5 arranged at the opening 10, which has slat elements 20, wherein the slat elements 20 each have at least one connecting device 4, 4' on their end faces, wherein the connecting device 4, 4' has at least one receiving element 6, 7 with at least one first opening 41 and at least one second opening 42, is characterized in that at least two connecting devices 4, 4' arranged side by side in the locking device 2 are connected via at least one,Separate connecting elements 5 are arranged in the first opening 41 of the first connecting device 4 and the second opening 42 of the second connecting device 4'.

[0051] In this embodiment, the closure arrangement is designed such that it consists of a total of four lamellar elements 20, which are arranged next to each other.

[0052] The lamellar elements 20 have a first connecting device 4 at one free end and a second connecting device 4' at their other, oppositely arranged free end.

[0053] Furthermore, in this embodiment, the closure arrangement is designed such that the lamellar elements 20 have additional, second connecting devices 4', which are arranged centrally and equidistant to the first connecting devices 4 at the free ends and to the second connecting devices 4'.

[0054] The locking arrangement is further designed such that the connecting element 5 is arranged in a force-locking and / or form-locking manner in the opening of the receiving elements 6,7 of the connecting device 4,4'.

[0055] Furthermore, the locking arrangement is designed such that the connecting element 5 connects the opposing (non-visible) openings of the receiving elements 6,7 of the connecting device 4,4' in a force-locking and / or form-locking manner in a rotatable manner.

[0056] In the Fig. Figure 4 shows a perspective partial section view of a locking mechanism of a cabinet.

[0057] The cabinet furniture 1, with at least one closing device 2, in particular a blind, roller shutter and the like, which is arranged in the area of ​​an opening 10 to be movable from a closed position (GP) to an open position (OP) and back, which is operatively connected to at least one guide device 5 arranged at the opening 10, which has slat elements 20, wherein the slat elements 20 each have at least one connecting device 4, 4' on their end faces, wherein the connecting device 4, 4' has at least one receiving element 6, 7 with at least one first opening 41 and at least one second opening 42, is characterized in that at least two connecting devices 4, 4' arranged side by side in the closing device 2 are connected via at least one opening 41 of the first connecting device 4 and the second opening 42 of the second connecting device 4'.separate connecting element 5 are connected to each other. In this embodiment, the closure arrangement is designed such that it consists of a total of 3 lamellar elements 20.

[0058] The lamellar elements 20 have a first connecting device 4 at one free end and a second connecting device 4' at their other, oppositely arranged, free end.

[0059] Furthermore, the locking arrangement is designed such that the connecting element 5 connects the opposing openings 41, 42 of the receiving elements 6,7 of the connecting device 4,4' in a force-locking and / or form-locking manner in a rotatable manner.

[0060] The locking arrangement is designed such that the connecting element 5 has at least one locking element 52, as shown in the sectional view.

[0061] Furthermore, the locking arrangement is designed such that the locking element 52 of the connecting element 5 engages the first opening 41 of at least one first receiving element 6 of the connecting device 4,4' in a locking manner, as is also shown in the sectional view.

[0062] The locking arrangement is also designed such that the connecting element 5 has at least one base 50 and a guide element 51 projecting away from it.

[0063] Furthermore, the locking arrangement is designed such that the connecting element 5 has at least two locking elements 52 spaced apart from each other by at least one opening 54.

[0064] In the Fig. Figure 5 shows a perspective view of a connecting device 4,4' of a locking arrangement of a cabinet furniture.

[0065] The connecting devices 4,4' are designed as mirror images, symmetrically to each other and each has the same features.

[0066] The figure above shows a first connecting device 4.

[0067] The figure below shows a second connecting device 4'.

[0068] The individual features of the connecting device 4,4' each have the same, identical reference numerals.

[0069] These will now be described in detail using the first connecting device 4 as an example.

[0070] The connecting device 4,4' has at least one base 40.

[0071] Furthermore, the connecting device 4,4' has at least one receiving element 46 arranged at the base 40.

[0072] The connecting device 4,4' each has receiving elements 6,7 at its free ends.

[0073] The receiving elements 6,7 of the connecting device 4,4' each have a first opening 41 and a second opening 42.

[0074] The connecting device 4,4' is further designed such that the receiving elements 6,7 of the connecting device 4,4' are connected to each other via at least one stiffening element 8,9.

[0075] In this embodiment, the first stiffening element 8 is arranged on the second receiving element 7 of the connecting device 4,4'.

[0076] A second stiffening element 9 is arranged on the first receiving element 6 of the connecting device 4,4'.

[0077] In this embodiment, the first stiffening element 8 is connected to the second stiffening element 9 of the connecting device 4,4'.

[0078] The connecting device 4,4's is further designed such that it has a receiving element 46 which has a cross-section approximately U-shaped.

[0079] Furthermore, the connecting device 4,4' is designed such that it has an opening 47 which in this embodiment is arranged on receiving element 46.

[0080] The stiffening device 4,4' is further configured such that an insertion element 43 is formed on the second stiffening element 9. In this embodiment, the insertion element 43 is bent, approximately quarter-circle in shape.

[0081] The connecting device 4,4' in this embodiment is made from a blend of styrene acrylonitrile (SAN) / polycarbonate (PC) and has a filler content of 10 wt.%, in this embodiment glass fibers.

[0082] However, it is also within the scope of the invention that the connecting device 4, 4' can be manufactured from another polymeric, thermoset, metallic or ceramic material.

[0083] In the Fig. Figure 6 shows a perspective view of a connecting element 5 of a locking arrangement of a cabinet furniture.

[0084] The connecting element 5 has at least one base 50 and a guide element 51 projecting away from it.

[0085] Furthermore, the connecting element 5 is designed such that it has at least one locking element 52.

[0086] In this embodiment, the connecting element 5 is designed such that the free end of the guide element 51 opposite the base 50 has two locking elements 52.

[0087] In this embodiment, the connecting element 5 is further designed such that it has at least two locking elements 52 arranged apart from each other via at least one opening 54.

[0088] The connecting element 5 is further configured to have a cavity 53. In this embodiment, the connecting element 5 is configured such that the cavity 53 is arranged in the base 50. However, it is also within the scope of the invention for the connecting element 5 to be configured such that the cavity 53 is arranged in both the base 50 and the guide element 51.

[0089] In this embodiment, the connecting element 5 is made of a polyamide (PA). However, it is also within the scope of the invention that the connecting element 5 can be made of another polymeric, thermoset, metallic or ceramic material. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 102017000214 A1

[0003]

Claims

[1] Cabinet furniture (1) and the like, with at least one closing device (2), in particular blinds, roller shutters and the like, which is arranged in the area of ​​at least one opening (10) to be movable from a closed position (GP) to an open position (OP) and back, which is operatively connected to at least one guide device (5) arranged at the opening (10), which has slat elements (20), wherein the slat elements (20) each have at least one connecting device (4, 4') on their end faces, wherein the connecting device (4, 4') has at least one receiving element (6, 7) with at least one first opening (41) and at least one second opening (42), characterized by, that at least two connecting devices (4,4') arranged side by side in the locking device (2) are connected to each other via at least one separate connecting element (5) arranged in the first opening (41) of the first connecting device (4) and the second opening (42) of the second connecting device (4'). [2] Cabinet furniture (1) according to claim 1, characterized by , that the connecting element (5) is arranged in a force-fit and / or form-fit manner in the opening (41,42) of the receiving elements (6,7) of the connecting device (4,4'). [3] Cabinet furniture (1) according to any one of the preceding claims, characterized by , that the connecting element (5) connects the opposing openings (41,42) of the receiving elements (6,7) of the connecting device (4,4') in a force-fit and / or form-fit manner so as to allow rotation. [4] Cabinet furniture (1) according to any one of the preceding claims, characterized by, that the connecting element (5) has at least one locking element (52). [5] Cabinet furniture (1) according to any one of the preceding claims, characterized by , that the locking element (52) of the connecting element (5) engages the first opening (41) of at least one first receiving element (6) of the connecting device (4,4') in a locking manner. [6] Cabinet furniture (1) according to any one of the preceding claims, characterized by , that the connecting element (5) has at least one base (50) and a guide element (51) projecting away from it. [7] Cabinet furniture (1) according to any one of the preceding claims, characterized by that the connecting element (5) has at least two locking elements (52) arranged apart from each other via at least one opening (54). [8] Cabinet furniture (1) according to any one of the preceding claims, characterized by, that the connecting device (4,4') has a base (40) and at least one receiving element (46) arranged on it. [9] Cabinet furniture (1) according to any one of the preceding claims, characterized by , that the receiving elements (6,7) of the connecting device (4,4') are connected to each other via at least one stiffening element (8,9). [10] Cabinet furniture (1) according to any of the preceding claims, characterized by , that the connecting device (4,4') and / or the connecting element (5) is made at least partially of a polymeric and / or thermosetting and / or metallic and / or ceramic material.

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