Line guide device and modular end fastener with flexible envelope for cleanroom applications - Patents.com

Abstract

The present invention relates to a line guide device (1) comprising a displaceable flexible envelope (2) with a duct-like sheath (7) for a line (8) and an end fastening device (20) comprising two clamping plates (210) each having a main surface (22) for exerting a clamping force and a retaining portion (211) for a strain relief element. The retaining portion holds the strain relief element to the respective clamping plate against longitudinal displacement and, according to the invention, forms a profile cross-section (220) with an undercut (221). Each of the strain relief elements (23A...23G) has at least one connection portion (230) corresponding to the profile cross-section (220) of the retaining portion for form-fitting engagement behind the undercut behind the undercut to also hold the strain relief element (23A...23G) to the clamping plate (210) in a direction perpendicular to the main surface (22). The present invention further relates to a variation of the end fastening device comprising two plate connectors (240A; 240B) for holding the clamp plate (210) together at the lateral end (214), each having two opposing clip portions (242) for form-fitting interaction with the end region (214).

Description

[Technical field]

[0001] The present invention generally relates to a line guide device for lines, e.g. cables, hoses, etc., particularly in clean room applications, i.e. a line guide device displaceable back and forth to form a deflection arc between two runs starting from a first end and a second end.

[0002] The present invention particularly relates to improved end fasteners for such dynamic line guide devices. [Background technology]

[0003] Currently common line guide devices for cleanroom applications usually comprise one or more elongated flexible envelopes with longitudinally extending duct-like sheaths for transversely adjacent lines. Such hose-like envelopes or their sheaths, also known as "pods", inter alia prevent the release of wear particles produced during line displacement.

[0004] For most applications, a first end fastening device is provided for a first end of the line guide device and a second end fastening device is provided for a second end of the line guide device. The end fastening devices serve to connect the end to one of two connection points, e.g., a machine, where at least one of the connection points is movable relative to the other.

[0005] Examples of such line guide devices, together with end fastening devices particularly suitable therefor, are described in US Pat. No. 5,399,623 or US Pat. No. 5,499,632.

[0006] The end fastening device according to claim 1 or 2 is described in the utility model patent application WO 2013 / 033636 or in the subsequently published international patent application with application number PCT / IB2020 / 000047 (see figures 13A-13D thereof). In this case, each of the two end fastening devices has at least two clamping plates with main surfaces for exerting a clamping force, each of the clamping plates being positionable with respect to a main direction perpendicular to the longitudinal direction of the envelope or the line to be guided. Furthermore, two strain relief elements are provided between the two clamping plates, each with one clamping surface corresponding to one or more lines in the dust-tight envelope. The strain relief elements are arranged opposite each other between the opposing main surfaces of the clamping plates and hold the envelope together with the line in a force-locking manner in the longitudinal direction for strain relief of the line, in particular with respect to tensile forces.

[0007] In the end fastener according to WO 2005 / 023661 or PCT / IB2020 / 000047, each clamping plate has two retaining parts, each of which retains a strain relief element on the clamping plate in a direction parallel to the main surface, i.e. against a longitudinal displacement of the line. The retaining parts are in this case provided in the clamping plate as elongated through holes extending in the main direction of the clamping plate. The strain relief elements project into the elongated holes by corresponding projections and are thereby fixed in the longitudinal direction, i.e. perpendicular to the main direction of the clamping plate. Clamping plates with elongated holes as retaining parts or with a corresponding function are also described in WO 2005 / 023661 (see for example figures 8-9 therein), whereas here adjacent individual strain relief elements are described.

[0008] The clamping plates are typically connected together, e.g., clamped to each other, by means of double-sided screw fasteners, and also fastened, e.g., to a connection point of the machine or equipment to be supplied.

[0009] The strain relief elements provide a force-locking contact, in particular a frictional contact, to the envelope and the lines guided therein, whereby they are fixed longitudinally at their respective connection points by means of end fasteners and the lines are strain relieved.

[0010] One problem with known devices is the relatively complicated handling of the end fasteners during installation and removal. The end fasteners must be periodically removed and reinstalled for maintenance purposes, in particular when the lines need to be replaced due to their life span defined by the travel cycle. When the clamped or screwed connection is released, as for example in US Pat. No. 5,999,366, the known end fasteners break into several individual parts, which also need to be correctly positioned and held before fastening. This problem is particularly evident when the line guide device is designed to have multiple envelope layers or to guide several lines.

[0011] A further problem is the limited compatibility of known end fasteners with widely differing line diameters, particularly the simplified construction according to US Pat. No. 5,399,633. 。 [Prior art documents] [Patent documents]

[0012] [Patent Document 1] German Patent No. 102012100290 [Patent Document 2] European Patent Application Publication No. 3226252 [Patent Document 3] German Utility Model No. 202019103276 [Patent Document 4] German Patent No. 102012100533 Summary of the Invention

[0013] It is therefore a first object of the present invention to propose a construction for an end fastening which is easy to handle and, in particular, can be well adapted to different line diameters by being modular. This is achieved in a first aspect of the present invention by a line guide arrangement as claimed in claim 1 or an end fastening device thereof as claimed in claim 2.

[0014] A further object is to improve the modular nature of the end fasteners, in particular with regard to their adaptability to the widest range of envelope or line configurations. This object is achieved according to an independent further aspect of the invention by an end fastening device as claimed in claim 10, which can also optionally simplify handling.

[0015] According to a further independent aspect, a modular assembly kit for an end fastening device as claimed in claim 20 is proposed, which inter alia overcomes the above two problems at least to some extent.

[0016] First aspect According to a first aspect, the invention proposes for a line guide device according to the first part of claim 1 or for an end fastening device according to the first part of claim 2 that the holding part of the clamping plate forms an undercut profile cross-section, i.e. a profile cross-section with at least one undercut, when viewed in a cross-section perpendicular to the main direction. According to the invention, the strain relief element here in any case has at least one corresponding connection part, which is configured for form-fitting engagement behind the undercut and corresponds or interacts accordingly with the profile cross-section of the holding part.

[0017] By engaging behind the connections of the strain relief elements in or on the clamping plates, the strain relief elements may also be held securely against their respective clamping plates in a direction perpendicular to their major faces.

[0018] This design provides the advantageous effect that, in particular, before fastening or after removal or dismantling of the clamping plate, the strain relief element is held or remains on the clamping plate in a predetermined manner or specific arrangement, i.e., facilitating handling of the end fasteners, and in particular, preventing the separation of complex arrangements into different individual parts that would be required to match the arrangement of the lines in a desired manner for re-installation or initial installation.

[0019] This can be particularly, but not exclusively, advantageous for applications having multiple layers of lines or envelopes and / or having multiple different modular strain relief elements, eg, each tailored to a line diameter.

[0020] Furthermore, the back-engaging connection between the strain relief element and the clamp plate may also improve force transmission, particularly in the longitudinal direction, or minimize wear on the end fasteners themselves by minimizing travel play. Testing has shown that during operation, greater particle emissions are generally measurable at the end fasteners than at the runs or deflection arcs.

[0021] Unlike DE 202019103276 or PCT / IB2020 / 000047, an embodiment with a plurality of individual modular strain relief elements in each clamping plate is advantageous. With such a further development, the individual strain relief elements are configured for an arrangement in opposing rows between mutually opposing main faces of the clamping plates, with a plurality of mutually adjacent strain relief elements in each row in the main direction. For example, different strain relief elements may each be used and pre-attached to the clamping plate, which fits the desired line in a modular manner.

[0022] Furthermore, special fastening elements for end fixing of the support chains can be used to fasten with optional additional support chains. Such fastening elements preferably also have connections designed to interact with the profile cross-section of the clamping plate similar to that of the strain relief elements.

[0023] Thus, multiple strain relief elements and fastening elements may be attached, either modularly or alternatively, both constrainedly, to a single clamping plate to form a pre-assembled unit with the clamping plate.

[0024] The strain relief elements for the lines can be configured at their respective clamping surfaces, for example with a kind of tooth mechanism with protruding tooth portions extending in the longitudinal direction of the line or in the manner of a comb with individual elongated comb teeth, in order to provide a good frictional engagement for strain relief and at the same time a deformability allowing the strain relief elements to be used for a range of different line diameters. The strain relief elements may be configured, for example, to form a half-shell-shaped sheath with a concavely curved clamping surface, which allows a strain relief of the line as consistent or mechanically suitable as possible in the longitudinal direction, optionally with a corresponding receiving duct of the envelope, by a force-lock (frictional connection) and optionally a clamping connection. The structure of the clamping surfaces is not critical to the invention, and any suitable shape that holds the corresponding line in the longitudinal direction in the respective envelope at least by a force-locking engagement is possible. The clamping surface facing the line may be provided on the main front side of the strain relief element, which is opposite to the main back side with the connection.

[0025] The connection of the strain relief element or optional fastening element for the support chain is configured by a first aspect for form-fitting engagement in the undercut profile cross-section of the retaining part of the assigned clamping plate, whereby the element is held against the clamping plate in the longitudinal direction of the line, i.e. in a direction perpendicular to the main direction of the clamping plate and at the same time perpendicular to the main plane. The element is in this case preferably releasably connectable to the clamping plate, in particular in a transverse direction to the longitudinal direction of the line.

[0026] The strain relief element is preferably made integrally from a plastic material, in particular from a relatively soft plastic material, in particular from a thermoplastic material of similar strength and hardness to the material of the flexible envelope. The strain relief element may in this case be made from a suitable plastic material, in particular from a thermoplastic material with a Shore hardness in the range from Shore A20 (ShA20) to Shore D65 (ShD65), in particular from Shore A50 (ShA50) to Shore A100 (ShA100). In this way, damage to the envelope is avoided and wear due to holding frictional contact on the envelope is minimized. The strain relief element is particularly preferably made from a softer material and / or of an easily deformable form than the clamping plate intended to transmit the clamping force to the strain relief element.

[0027] The clamping plate is preferably dimensionally stable and in particular flexurally rigid by appropriate dimensioning and / or material selection. The clamping plate may in particular have two long end faces and two short narrow faces and have a generally rectangular outer shape.

[0028] A preferred further development provides that the profile cross-section of the clamping plate opens laterally outward at least on one of the short narrow faces, preferably on both short narrow faces. The strain relief element together with the connection can therefore simply be inserted and positioned in the clamping plate at one or both narrow faces of the clamping plate transversely or transversely to the line. However, mounting by rotation is also possible, as for example in the case of a bayonet coupling.

[0029] Particularly preferably, the clamping plate is configured such that the profile cross-section extends over at least a majority of the length, preferably over the entire length of the clamping plate, thereby allowing multiple positioning of the strain relief element.

[0030] At least the profile cross-section is preferably uniform over the entire length or in the main direction of the clamping plate. The clamping plate as a whole may have a cross-sectionally uniform outer contour over its entire length or in the main direction. The clamping plate may thus be produced inexpensively, for example by sizing from a long profile piece. In this case, the contour may be of planar or flat configuration in front view or in longitudinal section, in particular on both main faces.

[0031] In a particularly preferred embodiment, a clamping plate having two long end faces (long sides) normally parallel to the main direction preferably has a profile cross-section formed by end face grooves in each of the two end faces, which grooves are preferably mirror-symmetrical with respect to a central plane of symmetry, which may be parallel to the main faces. Preferably, corresponding connections engaging both opposite end faces are provided on the strain relief element, which may then engage in claw- or clip-like opposition in the corresponding end grooves to achieve the desired holding effect.

[0032] The bilateral retention of the element on the end faces of the clamping plate results in a particularly stable retention of the element on the clamping plate, i.e. displacement or relative movement between the element and the associated clamping plate, e.g. due to tensile or shear forces due to the reciprocating movement of the moving end fastener, can also be minimized, whereby wear and resulting particles can also be minimized.

[0033] In particular, but not exclusively in the case of end retainers in the clamping plate, it is advantageous if any strain relief element projects beyond the clamping plate at its longitudinal end at least on the free side, preferably on both sides, of the end fastening device remote from the connected run. In this way, edge protection may be formed for the line over the edge of the clamping plate, whereby the line is protected and any wear is more widely minimized.

[0034] The connections are particularly suitable for strain relief elements which engage on both sides at the end faces of the clamping plate and / or simultaneously form edge protection over the entire width of the element in the longitudinal transverse direction. By arranging such strain relief elements in a row, edge protection can be produced over the entire transverse direction in combination with a stable connection between the element and the clamping plate. Optional fastening elements or optional spacers for the support chain may be configured with corresponding connections with edge protection.

[0035] In one embodiment, it is provided that each clamping plate has two main faces facing away from each other, and that a retainer for the strain relief element is provided on each of the two main faces, each retainer forming in this case a profile cross-section with an undercut perpendicular to the main direction, the two profile cross-sections preferably having the same shape when considered individually. For example, the strain relief element and the fastening element may be optionally attached and retained on both sides.

[0036] In an embodiment with a double-sided retainer, it is provided that the two retainers are arranged on the clamping plate offset relative to one another in the longitudinal direction, i.e. perpendicular to the main direction. In this case, the retainers may preferably be arranged rotationally symmetrically about the main central axis of the clamping plate, so that a correspondingly configured strain relief element can be used equally on both sides of the clamping plate by simply rotating it. The retainer or the profile cross-section is preferably arranged centrally on one of the two width halves of the clamping plate, which may in particular be configured rotationally symmetrically relative to one another. By "width halves" is meant here the halves after bisection in the longitudinal direction.

[0037] In a preferred embodiment, each holding part may be mirror-symmetrical, in particular with respect to a central plane of symmetry perpendicular to the main faces, i.e. in particular with two mirror-symmetrical undercuts, which further simplifies the handling, in particular in the case of a centrally located holding part.

[0038] Alternatively or optionally also in addition, it may be provided that each holding part comprises a profile groove recessed relative to the main surface and / or a profile projection projecting relative to the main surface, which may for example be configured as a through profile groove in the main direction, for example around the main surface or around a bipartite.

[0039] In principle, a profile cross-section is understood in this case to mean a cross-section having any kind of profile that allows a back engagement by the strain relief element according to the invention in order to hold the strain relief element in a direction perpendicular to the main surface of the clamping plate. The profile may in this case form a convex shape, in particular a protrusion, and / or a concave shape (space), in particular a profile groove. The profile cross-section may be molded together with the clamping plate during its production, for example by means of continuous casting or injection molding, or may be incorporated later by machining, for example by milling.

[0040] The profile groove and / or profile projection may be any suitable shape having an undercut, for example a T-shape, V-shape or dovetail shape or similar back-engageable profile cross-section.

[0041] The connection part of the strain relief element should have a cross-section that is conjugate with the profile cross-section, in particular a cross-section that matches in a form-fitting manner, and should be displaceable in the main direction, i.e. transverse to the longitudinal direction of the line, in the holding part due to slight play in order to simplify handling during installation of the line guide or subsequent adaptation.

[0042] The configuration of the above-mentioned first aspect of the present invention can be advantageously combined with that of the following second aspect, and vice versa.

[0043] Second Aspect According to an independent second aspect by the initial stage portion of claim 10, an end fastening device for fastening the end of a general line guide device is proposed. The end fastening device includes at least two clamp plates having a main surface for exerting a fastening force, and each of the clamp plates has two lateral ends and two long end faces, which extend parallel to the main direction. The clamp plates are arranged as intended by the long end faces perpendicular to the envelope or line. Further, the end fastening device has a number of, but at least two, strain reducing elements, each having a clamping surface for one or more lines, and the strain reducing elements are arranged to face each other between the opposing main surfaces of the clamp plates.

[0044] According to an independent second aspect, it is proposed that the present invention provides two independent plate connectors that each act to hold two associated clamp plates at one of the two lateral ends, and each plate connector has two opposing, particularly longitudinally opposing, clip portions, and the clip portions each interact with one end of one of the two clamp plates. According to the present invention, the plate connectors are configured to hold at least two clamp plates together, both by gripping the end faces of the clamp plates, particularly longitudinally, i.e., perpendicular to the plate direction.

[0045] The two plate connectors can particularly hold the clamp plates at a predetermined distance from each other and / or parallel to each other.

[0046] The two clamp plates can each be held in pairs and connected in pairs to each other at their lateral ends on their two short (narrow) faces by independent intervening plate connectors as described above. Each of the opposing clip portions preferably engages at least in a form-fitting manner with each clamp plate.

[0047] The use of plate connectors simplifies handling especially in the case of multi-layer constructions with multiple overlapping envelopes, since the respective layer is already held when the plate connector is attached to the corresponding clamping plate of this layer. The plate connectors act in pre-fixing, which in this case can achieve a clamping force on the lines in the envelope in conjunction with suitable strain relief elements. Separate screw fastenings do not have to be manufactured for this purpose. Conversely, opening or access to individual layers, for example for replacing the lines in question, can also be simplified, since adjacent layers do not have to be removed in the case of multi-layer constructions.

[0048] Furthermore, the independent plate connectors allow for simplified construction of the clamp plates: they can, for example, optionally be cut to size from a longer profile to match end fasteners of a desired width.

[0049] Therefore, the plate connector according to the second aspect, together with its clip portion, is capable of connecting and holding two clamp plates in a pair in the longitudinal direction and perpendicular to the main surfaces.

[0050] The plate connector is preferably connected to an end of the clamping plate in a releasable manner, in particular laterally, i.e. displaceable transversely relative to the clamping plate, so that lateral removal is possible.

[0051] The plate connectors may in particular connect and hold two clamp plates together in the manner of a clip in a direction perpendicular to the main surface at a specific distance determined by the plate connectors. One advantageous effect is that a screw fastener is not necessarily required to generate the desired strain relief, and the desired force-locking engagement with the envelope or line may be achieved by appropriate selection of the strain relief elements and / or the plate connectors.

[0052] Alternatively or additionally, the clip part of the plate connector is particularly preferably formed for interaction with a profile cross-section of the clamping plate which, like the connection part of the clamping element, preferably opens outwards at the two short narrow sides, so that the plate connector can be easily attached laterally and detached again.

[0053] Still further, each plate connector may include a support body that is a spacer for predetermining the vertical distance between the clamp plates, the support body preferably having a structural height that is at least twice the structural height of the strain relief element, e.g., the particular associated strain relief element from the kit.

[0054] At least one longitudinal through-hole for a screw fastener is preferably provided in the support body, which screw fastener acts in particular during fastening to the connection point.

[0055] For both aspects, ie whether the first or the second aspect, the following further configurations are all advantageous.

[0056] In one embodiment, each strain relief element may be configured such that it projects longitudinally beyond an end face of the clamping plate and forms a sheath on a rear side remote from the clamping face, within which the respective clamping plate is at least partially contained.

[0057] In particular in combination with the above construction and / or the second aspect, it is advantageous if each strain relief element has opposing connections for form-fitting engagement in corresponding undercuts of the profiled or molded grooves in the end faces of the clamping plates in order to hold the respective strain relief element in the respective clamping plate in a direction perpendicular to the main surface of this clamping plate, in which case the structural height of the connections may itself preferably be less than half the plate thickness of the clamping plate, so that the strain relief elements can be fastened without resistance on both sides of the same clamping plate.

[0058] The connections of the elements, particularly the strain relief elements, when they are attached to a major surface of the clamping plate preferably do not protrude beyond the opposing major surface.

[0059] In particular, exactly one strain relief element may be provided on each main surface of the clamping plate, however, any modular construction is preferred in which a number of strain relief elements, in particular elements selected to suit the application from a kit of different strain relief elements and optionally fastening elements for the support chain, are arranged in a row in the main direction on the clamping plate.

[0060] The elements are preferably both held relative to the clamping plate and / or releasably relative to the clamping plate so as to be displaceable in the main direction for positioning.

[0061] A particularly cost-effective production is possible if the clamping plate is formed as an approximately flat plate, in particular with a main surface which is planar in longitudinal section or with a uniform thickness in the main direction.

[0062] In this case, the clamping plate may be manufactured by cutting to the desired length from a continuous profile, for example from an extruded metal profile, in particular of aluminium, having a profile cross-section in particular according to the first aspect. Alternatively, the clamping plate may be made, for example, from a reinforced plastic material, for example by injection moulding.

[0063] The strain relief elements and optionally the fastening elements on the other hand are preferably made integrally from a plastic material, in particular as injection moulded parts.

[0064] The plate connectors are preferably made integrally from a harder plastic material than the strain relief elements, for example from a fiber-reinforced polymer, in particular as injection molded parts. The plate connectors are dimensionally stable, in particular perpendicular to the main surface of the clamping plate, i.e. they are not stretchable under the intended loads, in order to allow a force-locking engagement between the strain relief elements and the lines in interaction with the clamping plate. The desired force for holding the lines can be achieved by appropriate selection or dimensioning of the plate connectors in combination with appropriate selection and dimensioning of the strain relief elements. Screw fasteners are not required for this purpose.

[0065] The strain relief element may have an active surface on which a clamping surface is provided which, for example, when viewed in a cross section along the main direction, i.e. perpendicular to the longitudinal direction of the line, is concave, alternately curved in a concave-convex manner or actually has a toothed or comb-like concave-convex shape. The clamping surface may in this case be cylindrical in the general geometric sense, i.e. have a uniform cross section parallel to the main direction.

[0066] Differently adapted strain relief elements may be provided, in particular for different line diameters, which elements are modularly connectable to the clamping plate.

[0067] In particular for multi-layer applications with multiple overlapping envelopes, it is mechanically advantageous if the clamping plates each have at least two through holes for screw fasteners at both lateral ends and one or more additional through holes for screw fasteners between the ends along the main direction, such through holes optionally being in the form of elongated holes and serving for the attachment of additional screws for the fastening and / or clamping operations.

[0068] The plate connector may have at least two, and preferably three, through holes for screw fasteners, which are preferably arranged for an aligned configuration with corresponding through holes for screw fasteners in the clamp plate.

[0069] A further advantageous effect of the two embodiments, especially the second embodiment, is that for fastening at least two envelopes in a multi-layer, optionally only three clamping plates arranged one on top of the other are sufficient, with the middle clamping plate in the mounted state of the end fasteners carrying strain relief elements on both sides, i.e. for fastening one envelope on one side of the middle clamping plate as well as the other envelope on the other side. Thus, in any case, there is no need to provide two clamping plates for each layer or envelope. In this way, material costs are reduced and handling is further simplified.

[0070] Third aspect According to a third independent aspect, the invention also relates to a modular assembly kit for a generic end fastener. According to independent claim 20 or the third aspect, the assembly kit comprises in its minimal embodiment at least five different components, namely: - at least one flat clamping plate, at least two different types of strain relief elements, each having a different structural height and each having the same structural connection for fixing the clamping plate at least in the longitudinal direction; at least two different types of plate connectors, each having two opposing clip parts of identical construction interacting with the clamping plate, in particular with the ends of the clamping plate, in at least a form-fitting manner; It is characterized by:

[0071] All the above-described configurations of the individual components, in particular the clamping plate, the strain relief element and the plate connector, are also advantageously applicable to the assembly kit.

[0072] The use of two plate connectors of different construction heights allows modular use of end fasteners with only one design of clamping plates, especially for multi-layer configurations with two or more superimposed envelopes optionally nested and held between only two clamping plates, and also for single-layer configurations. Such assembly kits can be better adapted with a minimum number of parts for different applications, especially line diameters, and further simplify handling during manufacturing and maintenance in the field. However, a number of different types of strain relief elements, three or more, are provided, preferably for different line diameters.

[0073] Particularly preferably, the clamping plates and strain relief elements in the assembly kit are configured according to the first aspect, where each clamping plate has at least one retaining portion with a profile cross-section having an undercut, and each strain relief element has a connection portion for retaining the strain relief element to the clamping plate by engagement behind the undercut of the profile cross-section in a direction perpendicular to a main surface of the clamping plate.

[0074] In preferred embodiments of all aspects, the strain relief elements extend beyond their end faces in a longitudinal direction, i.e. perpendicular to the main direction of the clamping plate, particularly on both sides, and / or grip at least to some extent around the periphery of each end face to form edge protection. [Brief description of the drawings]

[0075] [Figure 1A] FIG. 1 is a schematic representation of a typical line guide device in a perspective view according to the prior art, e.g., DE Utility Model No. 202019103276. [Figure 1B] 1 is a schematic representation of a typical line guide device in a longitudinal transverse cross section according to the prior art, e.g., DE Utility Model No. 202019103276 (Patent Document 3). [Figure 2A] FIG. 2 shows a perspective view of a first exemplary embodiment of an end fastener for a line guide device according to FIGS. 1A-1B assembled. [Figure 2B] FIG. 2 shows a first exemplary embodiment of an end fastener for a line guide device according to FIGS. 1A-1B assembled in an exploded view. [Figure 2C] FIG. 2 shows a first exemplary embodiment of an end fastener for a line guide device according to FIGS. 1A-1B in an assembled side view. [Figure 2D] 2A-2C show a modified end fastener in perspective view together with other strain relief elements. [Figure 3A] FIG. 13 is a cross-sectional view of a second exemplary embodiment of an end fastening device. [Figure 3B] FIG. 13 is a side view of a second exemplary embodiment of an end fastening device. [Figure 4A] FIG. 13 is a cross-sectional view of a third exemplary embodiment of an end fastening device. [Figure 4B] FIG. 13 is a side view of a third exemplary embodiment of an end fastening device. [Figure 5A] 13 shows a fourth exemplary embodiment of an end fastening device in cross section. [Figure 5B] FIG. 13 shows a fourth exemplary embodiment of an end fastening device in a partial perspective view. [Figure 6A] 13 shows a fifth exemplary embodiment of an end fastening device in cross-sectional view. [Figure 6B] FIG. 13 shows a fifth exemplary embodiment of an end fastening device in a partial perspective view. [Figure 7A] 6A-6B show front views of further exemplary embodiments of end fastening devices; [Figure 7B] 6A-6B show plan views of further exemplary embodiments of end fastening devices; [Figure 8A] 2A-2D in particular show plan views of various variants of clamping plates for the exemplary embodiment according to FIG. [Figure 8B] 2A-2D in particular show plan views of various variants of clamping plates for the exemplary embodiment according to FIG. [Figure 8C] 2A-2D in particular show plan views of various variants of clamping plates for the exemplary embodiment according to FIG.

Best Mode for Carrying Out the Invention

[0076] Further details and advantageous effects of the present invention can be inferred from the following description of preferred exemplary embodiments based on the accompanying drawings without limiting the above general nature. Corresponding or identical structures or functions are provided with corresponding reference numerals and may not be repeatedly described.

[0077] Figures 1A - 1B show exemplary embodiments of a dynamic line guide device 1, i.e., for a supply line 8, which is displaceable back and forth, for example, for power and data supply in a machine. The line guide device 1 is linearly displaceable and in the process forms a movable upper run 1A, a stationary lower run 1B, and a following deflecting arc 1C therebetween. The upper run 1A is displaceable in the longitudinal direction L of the line guide device 1. The deflecting arc 1C has a predetermined deflection radius or bending radius about a transverse direction Q perpendicular to the longitudinal direction L. In Figure 1A, the line guide device 1 comprises two flexible envelopes 2 that are elongated in the longitudinal direction L and nested with each other. However, the spatial position is arbitrary and the line guide device 1 can also move, for example, in the vertical direction. Each envelope 2 is generally hose - shaped and is formed to be sufficiently flexible, especially by appropriate design and / or material selection, to enable reversibly flexible bending of the deflecting arc 1C with little effort and to follow the movement operation of the movable connection or moving end with minimal resistance.

[0078] Each dust - proof envelope 2 (also known as a "pod") is, in particular, of a dust - proof embodiment and mainly acts to prevent the external release of particles that are inevitably generated, especially by wear of the line and / or support chain. The structure of the hose - shaped envelope 2 can be selected, for example, as described in Figures 9 - 10 of German Utility Model No. 202019103276 (Patent Document 3), the teachings of which are included here for the sake of simplicity. For example, other hose - shaped envelopes 2 according to the above - mentioned prior art may be used.

[0079] FIG. 1A further shows two end fastening devices 10, each of which is provided at one end of the line guide arrangement 1. The line guide arrangement 1 is connected and fastened with the end fastening devices 10 to one of two connection points, both of which are movable relative to one another, for example in a machine or equipment (not shown). FIG. 1A shows an end fastening device according to DE 202019103276 A1 (Patent Document 3, see Figures 13A-13D therein). In the following, an end fastening device according to a preferred embodiment not according to FIG. 1A but according to the invention is further described with reference to Figures 2-8.

[0080] FIG. 1B shows, purely by way of example, a possible internal subdivision of one of the two envelopes 2 in a cross section perpendicular to the longitudinal direction L. The envelope 2 can consist of a number of individual envelope units (not shown), for example made from a plastic material or from an integral hose with a number of ducts as sheath 7. In FIG. 1B, the envelope 2 has, by way of example, five duct-like sheaths 7 for one or more supply lines 8 or bundles of lines, and two support chains 9 in the outer sheath, which predetermine the radius of the deflection arc 1C and support the self-supporting length of the advanced upper run 1A. The envelope 2 is made from a soft flexible plastic material, in particular a thermoplastic material, for example PE, PU, ​​TPU, PTFE, expanded PTFE, PP, etc., and has a cross section perpendicular to the longitudinal direction L, which is constant over its entire length. The envelope 2 can be inexpensively produced as a strand product using suitable plastic extrusion techniques and cut to suitable lengths, for example from about 100 mm to about 1500 mm. All the sheaths 7 within the envelope 2 are spatially independent of one another and adjacent to one another in the transverse direction Q. The envelope 2 surrounds the line 8 or the support chain 9 over its longitudinal extent in a dust-tight manner, thus preventing the release of particles, which arise for example due to wear or abrasion.

[0081] 2A-2B show a particularly preferred example of an end fastening device 20 according to the invention. The end fastening device 20 can be used at both ends of the line guide arrangement 1. It comprises a number of clamping plates 210 of identical construction, which are manufactured as substantially flat rectangular plates of metal, for example in Figs. 2A-2D of extruded aluminium profile. The clamping plates 210 form on each main side a main surface 22 for exerting a clamping force and are arranged with their main direction H corresponding to the longitudinal extent of the clamping plates 210 perpendicular to the longitudinal direction L of the envelope 2 (see Fig. 1A). All clamping plates 210 are of similar construction and have two long end faces 211 and two short narrow faces 212 in the main direction H across which the line 8 is passed.

[0082] 2A-2D is a multi-layered structure with multiple envelopes 2 one over the other, with each layer including multiple modular strain relief elements 23A, 23B, 23C, 23D, etc. of different designs. In each of the four exemplary layers shown, identical strain relief elements 23A, 23B, 23C, and 23D are positioned opposite each other in pairs between two clamping plates 210. Each of the strain relief elements 23A, 23B, 23C, 23D has a clamping surface 232 for force-locking retention of one or more lines 8 (see FIG. 1B) in their respective duct-like sheaths 7 with the envelopes 2. The strain relief elements 23A, 23B, 23C, 23D are modular and configured for a spliced, facing arrangement between opposing major surfaces 22 of the clamping plates 210.

[0083] As can be seen most clearly from the side view of FIG. 2C, each of the identical clamping plates 210 has a retaining portion 213 for, inter alia, the strain relief elements 23A, 23B, 23C, 23D, etc., which retains them on the respective clamping plate 210 against displacement in the longitudinal direction L. As can be seen most clearly from FIGS. 2B-2C, each of the clamping plates 210 has for this purpose on their long end faces 211 distinct retaining portions 213 which face in mutually opposite directions when viewed in cross section or side view and which each have a profile cross section 220 here at the end with an undercut. The undercut in FIGS. 2A-2D is formed in the end faces 211 by a groove 221, i.e. a recess, which is generally U-shaped or constant over the entire main direction. The groove 221 is here each mirror symmetrical, perpendicular to both central planes, parallel to the main face 22 and has a rounded rectangular cross section of about half the structural height of the clamping plate 210.

[0084] The various strain relief elements 23A, 23B, 23C, 23D etc. each have two connecting parts 230 with a claw-shaped cross section relative to the main direction H, which are configured for form-fitting engagement behind the undercuts, i.e. grooves 221, in the profile cross section 220 of the retaining part 213 of the clamping plate 210, i.e. in the end face grooves 221, as is evident from Figs. 2A-2D. Each connecting part 230 is formed as identical mirror-symmetric claws at the two end faces. Each claw of the connecting parts 230 does not occupy even half the free height of the end face grooves 221, so that the strain relief elements 23A, 23B, 23C, 23D with the corresponding connecting parts 230 can engage in the profile cross section 220 of the retaining part 213 on both sides of the respective clamping plate 210 (see Fig. 2C).

[0085] Between the opposing connections 230, a sheath 231 is formed on the rear side of the strain relief elements 23A, 23B, 23C, 23D, which sheath accommodates approximately half the cross section of each corresponding clamping plate 210. For example, one and the same clamping plate 210 can be used for two consecutive layers of the envelope 2, as shown by the three longitudinal inner clamping plates 210 in Fig. 2A. The strain relief elements 23A, 23B, 23C, 23D have different clamping surfaces and substantially the same base area for modular use. The strain relief elements 23A, 23B, 23C, 23D can be made from the same flexible low-wear plastic material (see above) as the envelope 2.

[0086] Due to the design of the connections 230 which form-fittingly engage the undercuts of the clamping plates 210, the strain relief elements 23A, 23B, 23C, 23D are restrained against their respective clamping plates 210 not only in the longitudinal direction L but also in a direction perpendicular to the major surface 22.

[0087] 2A-2D further show special fastening elements 24 for the support chain 9, which fix the support chain 9 to the end fastening device 20 in the longitudinal direction L. The fastening elements 24 have identical connections 230 and sheaths 231 on their rear side (not shown). The same applies to the additional spacers 25 in the top two layers of FIGS. 2A-2D. These spacers 25 all allow a lateral offset in the transverse direction Q between the opposing strain relief elements 23A, so that two overlapping envelopes can be bonded and fixed between the two clamping plates 210 of the top two layers, as shown in FIG. 1A. The spacers 25, like the fastening elements 24, have claws for holding to the clamping plate 210, which are identical in cross section to the connections 230. Thus, the fastening elements 24 and the spacers 25 are held and can be fixed in the same way to the clamping plate 210 in the longitudinal direction L and perpendicular to the main surface 22.

[0088] As further shown in FIGS. 2A to 2D, the profile cross-section 220 is open to the outside on both sides at the short narrow surface 212, that is, open laterally and accessible. The profile cross-section 220 is constant in the main direction H, that is, over the entire length between the narrow surfaces 212. Thus, the strain relief elements 23A, 23B, 23C, 23D, the fastening element 24 and the spacer 25 can be optionally attached in a modular manner or to the clamping plate as required, and positioned at any position by insertion along the main direction H.

[0089] FIG. 2B additionally shows, by way of example, a toothed clamping surface 232 for the forced locking retention of line 8 by the envelope 2 for the strain relief element 23A (in the upper layer). In this case, the clamping surface 232 has tooth strips or comb teeth that project alternately between the recesses and extend in the longitudinal direction L, and the tooth strips or comb teeth achieve a certain degree of deformability for adaptation to the various diameters of line 8, while at the same time achieving good frictional engagement. By way of example, only the clamping surface 232 will be briefly described. For example, a flat design is also possible, as in the case of the strain relief elements 23B, 23C, 23D which mainly differ only by the different structural heights or depths of their respective clamping surfaces. Furthermore, strain relief elements 23E, 23F, 23G having concave or concave-convex clamping surfaces can also be used, as in the variant of FIG. 2D. These strain relief elements 23E, 23F, 23G also have a connecting portion 230 that interacts with the holding portion 213. The end fastening device 20' in the variant of FIG. 2D is substantially different due to these different-shaped strain relief elements 23E, 23F, 23G.

[0090] As Figs. 2A-2D further show, the end fastening device 20 according to a further embodiment has two plate connectors 240A, 240B, each of which is provided as an independent component between the lateral ends 214 of the clamping plates 210, for gripping and connecting each of the two clamping plates 210 in pairs to one of the two lateral ends 214. For this purpose, each plate connector 240A, 240B has two opposing clip portions 242 according to Figs. 2A-2D, which structurally correspond to the claw-like connecting portions 230 of the strain relief elements 23A-23G, i.e. have mutually opposing end claws. Meanwhile, each plate connector 240A, 240B has corresponding clip portions 242 at their top and bottom for connection with the two clamping plates 210. With the plate connectors 240A, 240B, each of the clamping plates 210 is connected together in pairs and held parallel at a predetermined distance from each other. For this purpose, the opposing clip parts 242, like the connecting parts 230, grip at least form-fittingly in the end face grooves 221 of the clamping plates 210 in pairs (see FIG. 2C). In the example of FIGS. 2A-2D, two plate connectors 240A, 240B are shown which merely differ in constructional height so that by selecting the plate connectors 240A, 240B the spacing between the mutually opposing strain relief elements 23A-23G in a pair can be adjusted. The constructionally identical plate connectors 240A or 240B are inserted between the two clamping plates 210 at both ends 214. They are likewise insertable laterally in the main direction H and removable again. The plate connectors 240A, 240B here have a block-shaped support body 243 of solid material, in particular of a dimensionally stable, non-elastic plastic material, for example fiber-reinforced polyamide. The support body 243 has vertical spacers for predetermining the vertical distance between the clamping plates 210. The plate connectors 240A, 240B differ in particular in the structural height of the support body 243, but are otherwise of identical structure, in particular in their vertically and horizontally mirror-symmetric clip parts 242. The plate connectors 240A, 240B may have a concave opening to the receiving space for the envelope on only one side.

[0091] Both plate connectors 240A, 240B have three through holes 245 arranged identically in their support body 243 and distributed in the longitudinal direction L for screw fastening with screws 250. The through holes 245 are arranged in a matching arrangement with the corresponding through holes 215 for the screws 250 in the clamping plate 210. The two outer screws 250 at the end 214 can be used for lateral fastening of the prefabricated end fastening device 20, 20', as can be seen in Fig. 2A / 2D. For this purpose, in the lowest clamping plate 210, either a threaded bush can be pressed into the corresponding through holes 215 at the bottom or a nut can be used. The central through hole 215, 245 can be used for fastening the end fastening device 20, 20' to a connection point, i.e. to a fixed point or to a moving end (not shown).

[0092] As is more apparent from Figures 2A-2D, the strain relief elements 23A-23G and the connection portions 230 of the fastening elements 24 and spacers 25 act simultaneously as edge protection at the end surface 211 of the clamping plate 210 so that the line 8 cannot come into contact with the end surface 211 of the clamping plate 210.

[0093] 3A-3B show variants with end fastening devices 30 for two-layer envelopes, which here are merely different in the design of the clamping plates 310, as an example. They likewise have a profile cross section 320 with an undercut, but which is not symmetrical with respect to the central plane of the clamping plates 310. The clamping plates 310 correspond in construction to the longitudinally bisected clamping plates 210 of FIGS. 2A-2D, such that two clamping plates 310 have to be provided in an inverted arrangement on top of each other between two successive layers. This allows a cheaper production of the clamping plates 310 with lower material costs.

[0094] A further simplification of the clamp plate 410 is shown in the variant of the end fastening device 40 of Figures 4A-4B, here by a substantially flat plate, which is particularly inexpensive to manufacture, where no undercuts are used. The example according to Figures 4A-4B further shows that the second aspect of the invention, relating to a structure with independent plate connectors 240A, 240B, can also be optionally utilized independently of the first aspect, i.e. the connection between the strain relief elements 23A-23G and the clamp plate 410. In Figures 4A-4B both two clamp plates need to be used for each layer.

[0095] Figure 5A~ 5B 5A shows an exemplary embodiment of an end fastening device 50 with an alternative design of a profile cross-section 520 for a clamping plate 510. The profile cross-section 520 is provided here as a combination of a T-shaped projection 527 and two mirror-symmetric L-shaped grooves 521 as undercuts in the plate body of the clamping plate 510. The profile cross-section 520 is provided on only one of the two main faces of the clamping plate 510 and is mirror-symmetric with respect to the longitudinal longitudinal central plane of the clamping plate 510 (FIG. 5A). In the case of the clamping plate 510 as well, the profile cross-section 520 is identical over the entire main direction H and laterally opens on both sides in the main direction H for the insertion of a strain relief element 523 or a plate connector 540 or the like. The strain relief element 523 or the plate connector 540 has a connection 530 of a matching cross-sectional profile formed accordingly as a form-fitting counterpart.

[0096] Figure 6A~ 6B1 shows a further exemplary embodiment of an end fastening device 60 with an alternative design of the profile cross-section 620 of the clamping plates 610, here with two retaining portions 613 on each clamping plate 610. The clamping plates each have one retaining portion 613 for a strain relief element 623 on both main faces 622. The retaining portions 613 form a profile cross-section 620 with a double undercut perpendicular to the main direction H, again formed by, for example, a T-shaped groove 621 that runs completely into the plate body of the clamping plate 610.

[0097] The two retaining portions 613 are provided on the clamping plate 610 on one of the two opposing main surfaces 622, the retaining portions being offset from one another perpendicular to the longitudinal direction L, i.e., the main direction H, and arranged rotationally symmetrically about the main central axis M. The retaining portions 613 are further arranged centered on one of the two width halves of the clamping plate 610. Thus, due to the structure of the clamping plate 610, the strain relief element 623 and the plate connector (not shown) can also engage with corresponding mating connections on both sides of the clamping plate. 5B 6A-6B correspond to those described above in relation to FIGS. 2A-2D.

[0098] A further variation of the end fastening device 70 is shown in FIGS. 7A-7B, in which a clamp plate 710 is similar to that shown in, for example, FIGS. 6B 7A-7B show that lateral fixation by screws is also possible without corresponding through holes in the clamp plate 710, due to the laterally projecting arrangement of the plate connectors 740 having through holes 745 as described in connection with FIG.

[0099] 8A-8C show a variant of the clamping plate 210 according to Figures 2A-2D. Between the lateral ends 214, additional through holes 235 for screw fastenings are provided, optionally by means of a different drill pattern for improved clamping action, for example in case of multi-layer end fasteners. [Explanation of symbols]

[0100] Figures 1A-1B 1 Line guide device 1A Upper Run 1B Lower Run 1C deflection arc 2. Envelope 7 Sheath 8 Supply Line 9. Support Chain 10 End Fastening Device L Longitudinal Q Transverse direction Figures 2A-2D 20, 20´ End Fastening Device 24 Fastening elements 25 Spacer 210 Clamp plate 211 End face (long side) 212 Narrow side (short side) 213 Holding part 214 End 22 Main surface 23A, 23B, 23C, 23D, 23E, 23F, 23G Distortion reduction elements 230 Connection part (with claws) 231 Sheath 232 Clamping surface 240A, 240B Plate Connector 242 Clip part 243 Support body 215, 245 Through holes (for screws) 250 Fastening screw L Longitudinal H main direction (corresponding to the transverse direction Q) Figures 3A-3B; Figures 4A-4B 30;40 End Fastening Device 310;410 Clamp plate 320 Profile Section 240A, 240B Plate Connector Figures 5A-5B; Figures 6A-6B 50;60 End Fastening Device 510;610 Clamp plate 513;613 Holding part 520;620 Profile cross section 521;621 Groove 622 Main surface 523;623 Distortion reduction element 527 Protrusion 530;630 Connection 540 Plate Connector H Main direction M main center axis Figures 7A-7B 710 Clamp Plate 740 Plate Connector 745 Through hole Figures 8A-8C 210 Clamp plate 214 End 215, 235 through hole

Claims

1. An end fastening device (20; 30; 40; 50; 60) for fastening an end of a line guide device (1) displaceable back and forth, having at least one elongated flexible envelope (2) with a number of duct-like sheaths for the line, said sheaths extending in a longitudinal direction (L) from a first end to a second end, said end fastening device (20; 30; 40; 50; 60) comprising: at least two clamping plates (210) having flat main surfaces (22) for exerting a clamping force, each of said clamping plates being positionable relative to a main direction (H) perpendicular to said longitudinal direction of said envelope; a number of strain relief elements (23A...23G) each having a clamping surface (232) for one or more lines and for an opposing arrangement between opposing major surfaces of the clamping plate; Equipped with Each of the at least two clamping plates (210) has a retaining portion (213) for the strain relief element, which retains the strain relief element on the clamping plate in a direction parallel to the main surface against displacement in the longitudinal direction, and each of the at least two clamping plates (210) has two long end faces (211) parallel to the main direction (H), The retaining portion (213) defines a profile cross-section (220) having an undercut (221); each of the strain relief elements (23A...23G) has at least one connection portion (230) corresponding to the profile cross-section (220) of the retaining portion for form-fitting engagement behind the undercut and for retaining the strain relief element (23A...23G) to the respective clamping plate (210) in a direction perpendicular to the main surface (22), the profile cross-section being formed by an end face groove (221) in each of the two end faces (211), and a corresponding end face connection portion (230) is provided on the strain relief element (23A-23G).

2. The clamp plate has two long end faces and two short narrow faces (212); said profile cross-section (220) opens outwardly on at least one of said short narrow sides (212); and / or The end fastening device of claim 1 , wherein the profiled cross-section (220) extends over at least a majority percentage of the length of the clamping plate (210).

3. 3. An end fastening device according to claim 1 or 2, wherein the connection portion (230) forms a protruding edge protection at the end face for the line.

4. 3. The end fastening device according to claim 1 or 2, wherein each clamping plate has two opposing main faces (622) each provided with a retaining portion (613) for a strain relief element (623) on either side thereof and forming a profile cross-section (620) with an undercut perpendicular to the main direction (H).

5. 5. An end fastening device according to any one of claims 1 to 4, wherein said retaining portions (213; 513) are mirror symmetric in configuration.

6. 6. An end fastening device according to any one of the preceding claims, wherein each retaining portion comprises a profile groove (221; 521; 621) recessed relative to said main surface and / or a profile projection (527) projecting relative to said main surface.

7. 7. The end fastening device according to claim 6, wherein the profile groove (521; 621) and / or the profile projection (527) form a T-shaped, V-shaped or dovetail-shaped profile cross-section (520; 620), and the connection portion (530; 630) of the strain relief element has a form-fitting matching cross-section.

8. An end fastening device (20; 30; 40; 50; 60) for fastening an end of a line guide device (1), said line guide device being displaceable back and forth and having at least one elongated flexible envelope (2) having a number of duct-like sheaths (7) for lines extending in a longitudinal direction (L) from a first end to a second end, said end fastening device (20; 30; 40; 50; 60) comprising: at least two clamping plates (210) having flat main surfaces (22) for exerting a clamping force, each of which has two lateral ends (214) extending parallel to a main direction (H) and two long end faces (211), said long end faces being positionable perpendicular to the longitudinal direction (L) of the envelope (2); a number of strain relief elements (23A...23G) each having a clamping surface (232) for one or more lines and for an opposing arrangement between opposing major surfaces of the clamping plate; Equipped with An end fastening device comprising two independent plate connectors (240A; 240B) for holding each of the at least two clamp plates (210) at one of the two lateral ends (214), each plate connector having two opposing clip portions (242) that interact with each of the ends (214) in at least a form-fitting manner, the plate connectors (240A; 240B) configured to hold the at least two clamp plates together.

9. 9. The end fastening device according to claim 8, wherein the plate connectors (240A; 240B) hold two clamping plates (210) together against displacement of the two clamping plates (210) relative to one another in the longitudinal direction (L) and in a longitudinal direction perpendicular to the main surface (22), by means of their clip portions (242) interacting with undercut profile cross-sections (220) of the clamping plates (210) and / or configured to grip the periphery of the two end faces (211) of the clamping plates (210) at their ends (214).

10. 10. End fastening device according to claim 8 or 9, wherein each plate connector (240A; 240B) comprises a support body (243) which is a spacer for predetermining the longitudinal distance between the clamping plates.

11. 11. An end fastening device according to any one of claims 1 to 10, wherein each strain relief element (23A...23G) projects in the longitudinal direction beyond the end face (211) of the clamping plate (210) and forms a sheath (231) at a rear side remote from the clamping face (232) within which the respective clamping plate (210) is at least partially housed.

12. 12. An end fastening device according to any one of claims 1 to 11, wherein a plurality of strain relief elements (23A...23G) are arranged in a row in the main direction (H) and are displaceably held relative to the clamping plate (210) and / or are removably held relative to the clamping plate (210).

13. An end fastening device according to any one of claims 1 to 12, wherein the clamping plate (210) is formed as a flat plate having a uniform thickness in the main direction.

14. The end fastening device according to any one of claims 1 to 13, wherein the clamping plate (210) is made from metal or reinforced plastic material.

15. 11. An end fastening device according to claim 8, wherein the strain relief elements (23A...23G) are integrally made from a plastic material, the plate connectors (240A; 240B) are integrally made from a harder plastic material than the strain relief elements (23A...23G) and / or the strain relief elements (23A...23G) are made from a softer material than the material of the clamp plate (210) and / or the plate connectors (240A; 240B).

16. The plate connector (240A; 240B) has at least two through holes (245) for screw fasteners arranged in an aligned configuration with corresponding through holes (215) for screw fasteners in the clamp plate (210). An end fastening device according to any one of claims 8 to 10 and 15.

17. 17. An end fastening device according to any one of claims 1 to 16 for fastening at least two envelopes (2) in a superimposed layer, comprising at least three clamping plates (210) arranged one on top of the other, in which the middle clamping plates carry strain relief elements (23A...23G) on both sides in the mounted state.

18. A line guide device (1) for a line, comprising: at least one elongated flexible envelope (2) displaceable back and forth, comprising a number of duct-like sheaths (7) for the lines (8), said sheaths (7) extending in a longitudinal direction (L) from a first end to a second end; a first end fastening device (20) for the first end of the envelope and a second end fastening device (20) for the second end of the envelope; Equipped with A line guide device, wherein the first end fastening device (20) and / or the second end fastening device (20) is an end fastening device (20) according to any one of claims 1 to 17.

19. A modular assembly kit for manufacturing an end fixation device according to any one of claims 1 to 17, comprising: At least one flat clamping plate (210); at least two different types of strain relief elements (23A...23G), each having a different structural height and each having the same configuration of connection portions (230) for fixing the clamping plate at least in the longitudinal direction; at least two different types of plate connectors (240A; 240B) having different structural heights, each plate connector having two opposing clip portions (242) of the same structure that interact with the end portion (214) of said flat clamp plate (210) in at least a form-fitting manner; A modular assembly kit comprising:

20. Each of the clamping plates (210) has at least one retaining portion (213) with a profile cross-section (220) having an undercut; 20. A modular assembly kit for an end fastening device as described in claim 19, wherein each strain relief element (23A...23G) has a connection portion (230) for holding the strain relief element to the clamp plate (210) by engaging behind the undercut of the profile cross-section (220) in a direction perpendicular to the main surface of the clamp plate (210).

21. 21. A device or assembly kit according to any one of claims 1 to 20, wherein the strain relief elements (23A...23G) protrude beyond the clamping plate perpendicular to the longitudinal direction or main direction of the clamping plate (210).

Images