Coupling device for receiving a pipeline

Abstract

Coupling device (1) for receiving a pipeline (2), preferably a flexible pipeline, wherein the coupling device (1) comprises a ring element (3) and a pressing element (4), wherein the ring element (3) is rotatable in the circumferential direction between a securing and unlocking position relative to the pressing element (4) and is configured such that the pressing element (4) is pressed inwards at least in sections in the securing position and thereby comes into engagement with the pipeline (2).

Description

[0001] The invention relates to a coupling device for receiving a pipeline and a method for coupling a coupling device to a pipeline.

[0002] Coupling devices for receiving a pipeline are known. These comprise a tubular member arranged to receive an end portion of the pipe, the member having a plurality of spring fingers, each of which is provided with a projection arranged to engage behind a rib of an inserted corrugated pipe to hold it in the member by spring tension (cf. EP 1 274 955). Release of the pipe is possible in some cases by actuating the fingers with a suitable tool. In other cases, the connection comprises a release element engaged with the member and movable to release the fingers, thereby allowing the pipe to be removed from the tubular member.

[0003] To prevent the pipeline from spontaneously detaching from the coupling device due to material fatigue of the spring fingers, EP 1 274 955 B1 describes a coupling device that accommodates a tubular body and has an inner element and an outer element with a plurality of elastic lugs with projections that engage in the tubular body. In a neutral position, the elastic lugs are pressed outwards to allow the pipeline to be removed from the coupling device. In a locked position, the elastic lugs snap into corresponding grooves in the corrugated pipe due to spring tension to fix the corrugated pipe. The elastic lugs are fixed in the locked position by the inner element.A disadvantage of this coupling device is that the elastic lugs are not pressed inwards, meaning that the engagement of the projections is essentially limited by spring tension. Furthermore, the elastic lugs and projections are designed in such a way that they can easily break off, creating the risk of accidental unlocking. Furthermore, there is a risk that if the pipe end is cut off at an angle, the seal resting on the end face of the tubular body will not provide sufficient sealing. The coupling device is also configured in such a way that the transition between the neutral and locked positions is complex, making handling of the coupling device difficult. Correct assignment of the coupling device assignments during assembly is particularly difficult when multiple coupling elements are used.

[0004] The invention is particularly based on the object of specifying a simple and cost-effective coupling device for receiving a pipeline, preferably a flexible pipeline, which enables reliable securing of the pipeline in the coupling device and can be easily adjusted, in particular without the use of tools, between a secured position and an unlocked position. Furthermore, the invention is particularly based on the object of ensuring a reliable seal even with crookedly cut pipe ends and facilitating later assignment of the coupling devices. Furthermore, the invention is particularly based on the object of specifying a method for coupling a coupling device to a pipeline, preferably a flexible pipeline.

[0005] According to the invention, these objects are achieved with regard to the coupling device, in particular by the subject matter of claim 1. With regard to the method for coupling a coupling device to a pipeline, the above object is achieved by the subject matter of claim 10.

[0006] Specifically, the object is achieved according to a first aspect in particular by a coupling device for receiving a pipeline, preferably a flexible pipeline, wherein the coupling device comprises a ring element and a pressing element, wherein the ring element is rotatable in the circumferential direction relative to the pressing element between a securing position and an unlocked position and is configured such that the pressing element is pressed inwards at least in sections in the securing position and thereby comes into engagement with the pipeline.

[0007] Furthermore, according to a second aspect (which can be combined with the first aspect), the object is achieved in particular by a coupling device for receiving a pipeline, preferably a flexible pipeline, wherein the coupling device comprises a ring element, preferably a pressing element, and a sealing element, wherein the sealing element comprises a porous material, in particular foam, and / or has a cylindrical shape, wherein the sealing element is designed to seal an outer circumference of the pipeline with respect to the coupling device.

[0008] Furthermore, according to a second aspect (which can be combined with the first and / or second aspect), the object is achieved in particular by a coupling device for receiving a pipeline, preferably a flexible pipeline, wherein the coupling device comprises a ring element and preferably a pressing element, wherein the coupling device is equipped by the manufacturer with an identification plate, in particular an identification disc, which can be separated, in particular torn off, from a main body of the coupling device and is preferably integrally formed on the main body, preferably the pressing element, in the initial state, in particular via at least one, preferably exactly two, more preferably opposite, webs.

[0009] Furthermore, the object is achieved in particular by a method for coupling a coupling device to a pipeline, preferably a flexible pipeline, wherein the coupling device comprises a ring element and a pressing element, wherein the ring element is rotated in the circumferential direction between a securing position and an unlocked position relative to the pressing element, so that the pressing element is pressed inwards at least in sections in the securing position and thereby comes into engagement with the pipeline.

[0010] One concept of the invention is that the coupling device allows for a reliable and simple coupling to a pipeline, particularly without the use of tools. Furthermore, the coupling device enables easy assembly and disassembly of the pipeline, as well as the assignment of the coupling device's assignment during assembly.

[0011] The ring element is preferably arranged on the pressure element, in particular on a surface of the pressure element that extends at least substantially orthogonally to an axial direction of the pipeline, wherein the ring element can partially enclose the pressure element. The pressure element can be designed as a cage element.

[0012] The main body can comprise the ring element and / or the pressure element. An integral molding is understood in particular to mean that the identification plate forms a one-piece, in particular monolithic unit with at least a portion of the main body, preferably the (entire) pressure element and / or ring element. In embodiments, the identification plate can be injection-molded together with the portion of the main body. Alternatively or additionally, the identification plate can be integrally connected to the portion of the main body, e.g., by welding and / or gluing.

[0013] The ring element can be rotatably connected to corresponding sections of the pressure element via a groove formed on an inner surface of the ring element, in particular a circumferential groove, in order to prevent axial movement of the ring element relative to the pressure element. Alternatively or additionally, the ring element can be rotatably connected to corresponding sections of the ring element via a groove formed on an inner surface of the pressure element, in particular a circumferential groove, in order to prevent axial movement of the ring element relative to the pressure element.

[0014] At least one radially outwardly projecting region, in particular a rib, can be formed on the ring element. The rib of the ring element can be aligned, in particular flush, relative to a (respective) indicator provided on the pressure element in order to indicate a locking position and / or an unlocked position. This is advantageous because the ribs, on the one hand, prevent slipping when the ring element is rotated and, on the other hand, allow a visual distinction to be made between the locking position and the unlocked position.

[0015] At least one fastening means can be provided on the coupling device, in particular on the pressing element, in order to align the coupling device with respect to an opening, in particular to fasten it to an opening.

[0016] The ring element and / or the pressure element can be made of plastic, in particular a thermoplastic. The ring element and / or the pressure element can be injection-molded components that can be assembled into the coupling device, in particular without further processing steps. This is advantageous because it allows the coupling device to be manufactured cost-effectively and easily.

[0017] The pressure element can be engaged with at least one recess, preferably a groove, formed on the pipeline, in particular on the pipeline in the circumferential direction. This is advantageous because it allows a force-locking and / or positive-locking connection to be established between the coupling device and the pipeline.

[0018] The return of the pressure element, which is at least partially pressed inward in the locking position, can be achieved by reducing the elastic deformation. This is advantageous because it eliminates the need for a return mechanism and allows the coupling device to be manufactured simply and cost-effectively.

[0019] The sealing element may comprise a closed-cell porous material, in particular foam, or at least be substantially made thereof. A closed-cell porous material is understood to be a material whose cavities, in particular pores, are at least substantially unconnected to one another, thus preventing the diffusion of gases and / or liquids through the sealing element.

[0020] The sealing element can be designed as a hollow cylinder. An inner diameter of the sealing element can at least substantially correspond to an outer diameter of the pipeline. An outer diameter of the sealing element can at least substantially correspond to an inner diameter of the coupling device, in particular an inner diameter of the pressure element.

[0021] The sealing element can be arranged in the coupling device, in particular between the pressure element and the pipeline. The height of the sealing element can be less than 8 cm, in particular less than 5 cm, possibly less than 3 cm and / or more than 0.5 cm, possibly more than 1 cm.

[0022] The inner diameter of the pipeline may be less than 10 cm, in particular less than 8 cm, possibly less than 6 cm and / or more than 3 cm, possibly more than 5 cm. The coupling device may be configured accordingly to accommodate such a pipeline.

[0023] An outer diameter of the pipeline may be less than 11 cm, in particular less than 9 cm, possibly less than 7.5 cm, and / or more than 4 cm, possibly more than 6 cm. The coupling device may be configured accordingly to accommodate such a pipeline.

[0024] The height of the sealing element may preferably correspond at least to the height of two radially projecting regions, in particular shafts.

[0025] The sealing element can be manufactured by gluing the ends of a strip together. Alternatively, the sealing element can be cut out of a single piece from a sheet-like material. This is advantageous because it allows the sealing element to be manufactured easily and cost-effectively, while simultaneously ensuring a reliable seal between the pipeline and the coupling device.

[0026] Symbols can be provided on one surface of the marking plate, with each symbol being assigned a function. The symbols can be marked according to the function of the coupling device. This is advantageous because it allows the function of the coupling device to be visually identified during assembly, preferably during the bodyshell phase, especially before final assembly.

[0027] The identification plate can be connected, preferably welded and / or cast, to the coupling device, in particular to the pressure element, particularly by the manufacturer. The identification plate can be arranged at a lower end of the coupling device, in particular a lower end of the pressure element. The identification plate can be connected to the fastening means. The identification plate can have a tab. This is advantageous because it makes the identification plate easy to remove. During manufacture of the coupling device, particularly before delivery of the coupling device, the identification plate can be molded onto the main body with additional webs.

[0028] At least one (at least substantially) radially protruding connecting element can be formed on a surface formed along an outer circumference of the pressing element. The at least one connecting element can be designed to be flexible. The at least one connecting element can optionally be elastically deformed in the direction of the pressing element. The connecting element can be connected to the pressing element at a distal end of the pressing element. The at least one connecting element can be configured such that it can be inserted into corresponding connecting regions of a mounting surface. The at least one connecting element can be configured such that it can be reversibly connected to the mounting surface by radially rotating the coupling device, in particular the pressing element. This is advantageous because it enables simple and secure mounting of the coupling device.

[0029] In the context of the invention, an initial state is understood to mean the state of the coupling device during assembly, preferably during the shell construction phase, in particular before final assembly.

[0030] In the context of the invention, a flexible pipeline is understood to mean a pipeline that is bendable in the axial direction and / or is at least substantially rigid in the radial direction.

[0031] Within the scope of the invention, a locking position is understood to be a position of the coupling device in which the pressing element is pressed inward at least in part. A released position, on the other hand, is understood to be a position of the coupling device in which the pressing element is at least substantially not pressed inward.

[0032] Preferred embodiments of the invention are specified in the subclaims.

[0033] In a preferred embodiment of the coupling device, the pressure element has a plurality of elastically deformable projections with protrusions. The projections can be formed in sections along a circumference of the pressure element. The projections can extend into the ring element. The projections can be at least substantially, in particular completely, enclosed by the ring element.

[0034] The projections can be formed at a distal end of the lugs. The projections can be formed at least substantially orthogonal to the lugs, in particular orthogonal and inward. The projections can be formed as locking lugs.

[0035] The ring element is preferably configured such that in the securing position the lugs are elastically deformed, preferably by an inclined surface mechanism, between the ring element and the pressing element, in particular are pressed inwards, so that the projections are pressed against the pipeline, in particular engage in the pipeline.

[0036] The inclined surface mechanism can be formed from at least one wedge element. The at least one wedge element can be formed on an inner surface of the ring element, in particular protruding inward. The at least one wedge element can be stepped in sections along a circumferential direction of the ring element. The number of wedge elements can correspond to the number of lugs, so that each lug is assigned exactly one wedge element with which it can be brought into contact. This is advantageous because it enables simple and reliable adjustment of the coupling device, which can be reliably operated even when exposed to external influences, in particular dust.

[0037] In a further preferred embodiment of the coupling device, a stop is formed on the ring element and / or on the pressure element. The stop is preferably configured such that rotation in the direction of the securing position is limited. The stop can be designed as an over-rotation protection device. The stop can be designed to project radially on an inner surface of the ring element and / or outer surface of the pressure element. The stop can be formed on the inclined surface mechanism. The stop can limit the sealing element, in particular an upper end face of the sealing element. The stop can limit the at least one wedge element, in particular in the circumferential direction. The stop can be designed to be radially aligned with the regions, in particular ribs, that project radially outwards on the ring element.This is advantageous because it reduces the complexity of the coupling device and allows for cost-effective manufacturing. Furthermore, the stop prevents damage to the coupling device due to incorrect operation.

[0038] In a further preferred embodiment of the coupling device, in the secured position, one side surface of the lugs is in contact with the stop, and / or in the unlocked position, another side surface of the lugs opposite the side surface of the lugs is in contact with the stop. The side surface of the lugs and / or the opposite other side surface of the lugs can be arranged at least substantially orthogonal to a circumferential direction of the pressure element. This is advantageous because it also allows a haptic distinction to be made between a secured position and an unlocked position.

[0039] In a further preferred embodiment of the coupling device, at least one anti-rotation element, preferably comprising or formed by a locking lug, is formed on the pressing element, in particular on the lugs, and on the ring element. The anti-rotation element is preferably configured to prevent unwanted rotation of the ring element in the direction of the unlocked position relative to the pressing element, in particular leaving the secured position. Unwanted rotation is to be understood in particular as independent rotation. Unwanted rotation can be caused, for example, by external influences such as vibration. The anti-rotation element on the pressing element can be designed to protrude radially, in particular outwards. The anti-rotation element can be formed on the lugs. The anti-rotation element can be formed on an outwardly facing surface of the lugs.The anti-rotation element on the ring element can be designed to protrude radially, in particular inwards. The anti-rotation element on the ring element can be designed on the inclined surface mechanism, in particular on the at least one wedge element. In the secured position, the anti-rotation elements can be arranged next to one another. The anti-rotation element on the pressing element can be pushed over the anti-rotation element of the ring element when entering and / or leaving the secured position, in particular by elastic deformation of the pressing element, preferably when a predetermined torque is exceeded. The anti-rotation elements can extend in the axial direction of the coupling device. This is advantageous because it improves the reliability of the coupling device in a simple manner.

[0040] In a further preferred embodiment of the coupling device, a support surface extending inwards in a radial direction of the coupling device is formed on the coupling device, in particular on the pressing element. The support surface is preferably configured to receive the pipeline at least in sections. The support surface can be configured to receive the pipeline in sections along a surface running substantially orthogonally to the support surface. Preferably, the support surface is configured to receive radially protruding regions, in particular corrugations, of the pipeline and / or the sealing element. Regions of the pipeline, in particular an end face of the pipeline, preferably a cut surface of the pipeline, can be arranged next to the support surface.This is advantageous because it centers the pipeline in the coupling device and ensures reliable reception of the pipeline in the coupling device even if the pipeline is cut at an angle.

[0041] In a further preferred embodiment of the coupling device, a collar extending inward in a radial direction of the coupling device is formed on the coupling device, in particular on the ring element. The collar is configured to at least partially absorb bending forces of the pipeline. Upon a bend, in particular axial bend, of the pipeline, radially recessed areas, in particular grooves, of the pipeline can be brought into engagement with the collar. This is advantageous because it reduces stress on the pressure element, thus ensuring secure and reliable reception of the pipeline in the coupling device.

[0042] Preferably, a sealing element (in particular the above-mentioned one) which is designed to seal an outer circumference of the pipeline with respect to the coupling device is integrally connected to the pressing element, in particular injection-molded thereon; and / or has at least one sealing lip, preferably a plurality of sealing lips, which point / point radially inwards from a cylinder section of the sealing element; and / or has a sealing lip which is extended, in particular with respect to at least one further sealing lip of the sealing element, and which rests against one end of the pipeline in the assembled state of the coupling device.

[0043] Preferably, a sealing element, in particular a second one, is provided, which is arranged on the pressure element in such a way that, in the assembled state, a seal against a connecting plate section is enabled. Alternatively or additionally, a sealing element, in particular a third one, is provided, which is arranged on the pressure element in such a way that, in the assembled state, a seal against a foam section (particle foam section, e.g., made of EPS and / or EPP) located beneath a / the connecting plate section.

[0044] The (respective) sealing element can be formed integrally with the coupling device, in particular with the pressure element. The (respective) sealing element can be made of a different material than the coupling device. This is advantageous because in this way the coupling device, in particular the pressure element, can be manufactured in a single manufacturing process in which the sealing element is, for example, injection-molded onto the coupling device, in particular onto the pressure element.

[0045] The sealing element can have several, e.g., at least 3 or at least 5 and / or at most 10, radially (particularly radially inwardly) protruding lamellae, in particular sealing lips. This is advantageous because it achieves a reliable sealing effect.

[0046] A further sealing element can be arranged on an at least substantially radially protruding region of the pressure element. Furthermore, a further sealing element can be arranged at a (lower) end of the pressure element, projecting radially (outwardly) along a circumference of the pressure element. This is advantageous because it increases the sealing of the coupling device.

[0047] A section of the sealing element adjacent to the support surface can be designed to protrude from another section of the sealing element, in particular, have a smaller inner diameter than another section of the sealing element. This is advantageous because it allows for reliable deflection of flowing air.

[0048] Furthermore, the above object is achieved by a method for coupling a coupling device, in particular a coupling device of the above type, to a pipeline, preferably a flexible pipeline, wherein the coupling device comprises a ring element and a pressing element (cage element), wherein the ring element is rotated in the circumferential direction between a securing and unlocking position relative to the pressing element, so that the pressing element is pressed inwards at least in sections in the securing position and thereby comes into engagement with the pipeline.

[0049] With regard to the method, reference is made to the advantages explained in connection with the coupling device. Furthermore, the method may alternatively or additionally comprise individual features or a combination of several of the features previously mentioned in relation to the coupling device. Further developments of the method may implement the configurations and / or functions explained above in connection with the coupling device.

[0050] Furthermore, the above object is achieved by a system comprising the coupling device according to the invention and the pipeline, preferably designed as a corrugated pipe. The pipeline can have radially recessed regions, in particular grooves, and / or radially protruding regions, in particular corrugations.

[0051] With regard to the system, reference is made to the advantages explained in connection with the coupling device. Furthermore, the system may alternatively or additionally comprise individual or a combination of several of the features previously mentioned with regard to the coupling device.

[0052] Furthermore, the above object is achieved by a system comprising a coupling device for receiving a pipeline, preferably a flexible pipeline, in particular a coupling device of the above type, in particular a coupling device and the pipeline of the above type, preferably designed as a corrugated pipe, and a connecting plate section, wherein the coupling device, preferably the pressing element, is detachably connectable or connected to an opening of the connecting plate section axially, preferably by at least one connecting element on a surface formed along an outer circumference of the pressing element that projects at least substantially radially (so that a connection between the coupling device or pressing element and the connecting plate section can be produced or is produced).

[0053] Preferably, a locking and / or snap-in mechanism is provided for connecting the pressing element and the opening. In a specific embodiment, the pressing element can be guided axially toward the opening and then locked relative to the opening by snapping it into place (particularly in an edge recess of the opening). The snap-in mechanism can have at least one (flexible) arm and / or at least one hook structure. In a specific embodiment, the arm can abut the connecting plate section from the inside in the locked (or mounted) state.

[0054] According to the embodiment, the connection between the pressing element and the opening can be released by turning. Specifically, the pressing element can be positioned relative to the opening by turning it so that it reaches the area of a (particularly enlarged) recess, so that it can then be removed axially from the opening. The entire removal process therefore preferably comprises turning followed by axial movement away.

[0055] In a specific embodiment, the opening of the connecting plate section has at least one, in particular a first, recess at one edge. Furthermore, a second (deeper or larger than the first) recess can be provided at the edge, in particular directly adjacent to the first recess, so that the second recess merges into the first recess (or vice versa). In a transition section between the first and the second recess, an inclined surface (or inclined edge) can be arranged, which (in the locked state) can serve as a stop and / or can press a locking element (hook element) of the snap mechanism inward during disassembly.

[0056] The invention will be explained in more detail below with reference to the accompanying drawings. The illustrated embodiments represent examples of how the coupling device, method, and system according to the invention can be configured.

[0057] Showing: Fig. 1 a first perspective view according to an embodiment of a coupling device according to the invention in the initial state; Fig. 2 a first perspective sectional view of the Fig. 1 shown embodiment of the coupling device according to the invention; Fig. 3 a first exploded view of the coupling device according to a further embodiment of the invention; Fig. 4 a perspective detailed view of the coupling device according to a further embodiment of the invention, wherein in particular the stop and the anti-rotation elements are shown; Fig. 5 a plan view of the Fig. 4 shown embodiment of the coupling device according to the invention; Fig. 6 a perspective sectional view according to an embodiment of a system according to the invention; Fig. 7 a perspective sectional view according to a further embodiment of the system according to the invention, wherein in particular the support surface and the sealing element are shown. Fig. 8 is a perspective view according to a further embodiment of the system according to the invention, wherein the coupling device is shown in the securing position; Fig. 9 is a plan view of a further embodiment of the coupling device according to the invention during manufacture, with additional webs on the main body for fixing the identification plate; Fig. 10 shows a further embodiment of a coupling device according to the invention in an oblique view; Fig. 11 a pressure element of the embodiment according to Fig. 10 in an oblique view; Fig. 12 a sectional view of the pressure element according to Fig. 11 in a cutout together with a cutout of a connecting plate section; Fig. 13 an opening of the connecting plate section according to Fig. 12; Fig. 14 a section of the opening according to Fig. 13; Fig. 15 the opening according to Fig. 13 with a pressing element in plan view in a first position; Fig. 16 the order pursuant to Fig. 15 in a second position; Fig. 17 the coupling device according to Fig. 10 with a section of a pipeline and a section of an assembly counterstructure; Fig. 18 an excerpt from Fig. 17.

[0058] In the following, the same reference numbers are used for identical and equivalent parts.

[0059] The Fig. 1 shows the coupling device 1 in the initial state, wherein the coupling device 1 is provided with the identification plate 18 (see Fig. 2). The coupling device 1 comprises the ring element 3, the pressure element 4 and the sealing element 15. The coupling device 1 is shown in the unlocked position, wherein the pressure element 4 is not pressed inwards. At an upper end of the ring element 3, a collar 14 is formed which extends inwards in the radial direction of the coupling device 1. Ribs 21 projecting radially outwards are regularly formed on the ring element 3. The sealing element 15 is arranged in the pressure element 4 between the stop 10 and the support surface 13. The stop 10 delimits an upper end face of the sealing element 15 (see Fig. 2 and Fig. 3). The support surface 13 defines a lower end face of the sealing element 15.

[0060] The Fig. 2 shows a plurality of lugs 5 with projections 6. The projections 6 are formed as locking lugs at a distal end of the lugs 5. The identification plate 18 is arranged at a lower end of the pressing element 4. A support surface 4 extending inward in a radial direction of the coupling device 1 is formed on the pressing element 4. The ring element 3 is arranged on the pressing element 4. The ring element 3 encloses the lugs 5. The lugs 5 extend into the ring element 3.

[0061] The Fig. 3 shows the pressing element 4 with several projections 5. The projections 5 are arranged regularly on the pressing element 4 along the circumference of the pressing element 4. Radially inwardly projecting stops 10 are formed on the inner surface of the ring element 3. The stops 10 are formed on the inclined surface mechanism 7. The inclined surface mechanism 7 is formed from several wedge elements. The stops 10 each delimit a wedge element in the circumferential direction. The stops 10 are arranged radially aligned with the ribs 21 formed on the ring element 3.

[0062] In the Fig. 4 shows the outer ring element 3 and an inner extension 5. An anti-rotation element 8 is formed on the outward-facing surface of an extension 5. The anti-rotation element 8 is formed radially outward in the direction of the ring element 3. An anti-rotation element 9 is formed on the inclined surface mechanism 7 on the ring element. The coupling device 1 is shown in the unlocked position. The anti-rotation element 9 is formed on the ring element 3 so as to protrude radially inward in the direction of the extension 5. The stop 10 is in contact with the side surface 12.

[0063] In the Fig. 5 shows the outer ring element 3 and an inner projection 5. The coupling device 1 is shown in the locking position. The side surface 11 is in contact with the stop. The anti-rotation element 8 on the pressure element is arranged behind the anti-rotation element 9 on the ring element in the direction of the locking position. The locking position is limited by the contact of the side surface 11 with the stop 10 and the contact of the anti-rotation elements 8, 9.

[0064] In the Fig. 6 shows the system 17. In the system 17, the pipeline is arranged in the coupling device 1. The pipeline 2 is designed as a corrugated pipe with radially recessed areas (grooves) and radially protruding areas (corrugations). The coupling device 1 is shown in the unlocked position. The support surface 13 partially accommodates the pipeline 2. The sealing element (15) is arranged around an outer circumference (16) of the pipeline (2).

[0065] In the Fig. 7 shows the system 17. The sealing element 15 is arranged between the pipeline 2 and the pressure element 4. The sealing element 15 is flush with the pressure element 4 and the pipeline 2 in the circumferential direction. A surface of the pipeline 2 that is essentially horizontal relative to the support surface 13 rests on the support surface 13. The end face formed in the region of the radially recessed area of the pipeline 2 is arranged next to the support surface 13.

[0066] In the Fig. Figure 8 shows the system 17 in the locking position. A rib formed on the ring element 3 is aligned with an indicator provided on the pressure element 4.

[0067] In the Fig. 9 shows the coupling device 1 during production. In addition to the two webs 20, the coupling disc is connected to the pressure element 4 via further webs. However, the further webs are removed in a production step, so that when the coupling device 1 is delivered, the identification plate is only connected to the pressure element 4 via the two webs 20. Various identification marks 19 are provided on one surface of the identification plate 18 (shown only as an example). Each identification mark can be clearly assigned to an area (room) of a house. The identification mark 19 is marked according to the assignment of the coupling device 1 so that the assignment can be clearly assigned during assembly. During final assembly, the identification plate 18 is removed before the pipeline 2 is installed.

[0068] Fig. 10 shows a further embodiment of a coupling device 1, which has a ring element 3 and a pressure element 4. The pressure element 4 is in Fig. 11 shown again separately. In Fig. 12, the pressure element is shown in Fig. 11 (with sealing elements, which may be tapered if necessary) is shown in sections in cross-section, together with a section of a counterstructure, specifically a connecting plate section (connecting section in plate form). The connecting plate section can be a section of a plate and / or a section of a wall, for example, a box-shaped structure. Specifically, the wall can be the wall of a distribution box.

[0069] As in Fig. 12, the pressing element 4 has at least one hook 22 which is configured to engage with the connecting plate section 23. Specifically, a (distal) end of the hook 22 abuts (from below or inside) against the connecting plate section 23, so that in the position according to Fig. 12 the pressure element is not in the axial direction (in Fig. 12 upwards). However, before the hook 22 snaps into place (i.e., during the establishment of the connection), the pressure element can be moved in the axial direction until the hook 22 snaps into place.

[0070] The process of releasing or establishing the connection between the pressure element and the connecting plate section is described in the Fig. 13-16 further explained.

[0071] Fig. Figure 13 initially shows an opening 24 in the connecting plate section 23. A basic structure of the opening 24 is (circular). Furthermore, the opening 24 (at its edge) has at least one first recess 25 and at least one second recess 26, which is located directly adjacent to the first recess 25 (separated only by an edge 27). For the (locking) connection between the pressure element and the connecting plate section, the at least one Fig. 16, the hook 22 shown is guided axially in the area of a corresponding first recess 25 in the direction of the recess 25 until it slides through the recess and ultimately snaps into place in a locking manner. To release the locking mechanism (disassembly, see Fig. 15), the at least one hook 22 can be rotated (for example, counterclockwise, for example, by at least 5° or at least 10° and / or at most 45° or at most 25°) until it is arranged in the region of the second recess 26. In this position, the hook 22 and thus the pressing element 4 can be axially removed from the connecting plate portion 23.

[0072] In the enlarged view according to Fig. Figure 14 shows the first recess 25 and second recess 26, and in particular the edge 27, in detail. The edge 27 serves as a stop and can push the (respective) hook inward during disassembly.

[0073] According to the embodiment, at least two or at least three or at least or exactly four and / or at most 10 hooks 22 (preferably with a corresponding respective first recess 25 and corresponding second recess 26) can be provided.

[0074] A sealing concept of the embodiment according to Fig. 10 is based on the Fig. 17 and Fig. 18 is shown in further detail.

[0075] The embodiment according to Fig. 10 can have several (specifically three) sealing elements, namely a first sealing element 28, a second sealing element 29, and a third sealing element 30. In principle, it is sufficient if only one or only two of the aforementioned sealing elements are present. If additional sealing elements are required, these can also be provided separately if necessary. The first and / or second and / or third sealing element is preferably injection-molded and formed from a different material than a main body 31 of the pressure element 4.

[0076] The first sealing element 28 serves as a seal between the (flexible) pipe and the pressure element (and in this respect corresponds functionally to the sealing element 15 of the embodiment according to Fig. 1).

[0077] The first sealing element 28 preferably has a plurality of lamellae 32 pointing in the direction of the pipeline, wherein a lamella which in the assembled state (cf. Fig. 18) arranged at one end of the pipe 2, is longer than the other fins (for example, at least 1.2 times or 1.5 times or at least 2 times and / or at most 5 times as long). The (extended) fin can serve as an air deflector.

[0078] The second sealing element 29 serves to seal the connecting plate section 23 and the pressure element 4. The second sealing element can be annular and arranged on a flange section 33 of the pressure element 4 (in particular, an outer end of the flange section 33) and, if appropriate, extend obliquely outward in cross-section from the location of the arrangement (toward the connecting plate section). The second sealing element can be designed as a ring.

[0079] The third sealing element 30 can serve as a seal between a foam element (in particular a particle foam element, preferably a particle foam block, in particular an EPS block and / or an EPP block) 34 and the pressure element 4. The foam element 34 can abut the connecting plate section 23 (in particular be arranged within a cavity defined by a box, which in turn encloses the connecting plate section 23).

[0080] A thickness of the connecting plate section can be at least 0.25 mm, preferably 0.5 mm, optionally at least 0.75 mm and / or at most 4 mm, preferably at most 2.5 mm, more preferably at most 1.5 mm.

[0081] At this point, it should be noted that all parts described above, viewed individually and in any combination, particularly the details shown in the drawings, are claimed as essential to the invention. Modifications to these are familiar to those skilled in the art.

[0082] Furthermore, it is pointed out that the aim is to achieve the broadest possible scope of protection. Therefore, the disclosure contained in the claims may also be further clarified by features that are described with additional features (even without these additional features being mandatory). It is explicitly pointed out that parentheses and the term "in particular" are intended to emphasize the optionality of features in the respective context (which does not imply, conversely, that without such identification, a feature is to be considered mandatory in the corresponding context). List of reference symbols 1 coupling device 2 pipeline 3 ring element 4 pressure element 5 approaches 6 projections 7 Inclined surface mechanism 8 Anti-rotation element on the pressure element 9 Anti-rotation element on the ring element 10 stops 11 Side surface 12 other side surfaces 13 Support surface 14 fret 15 Sealing element 16 outer circumference 17 Systems 18 Marking plate 19 Marking 20 bridges 21 ribs 22 hooks 23 Connecting plate section 24 Opening 25 first recess 26 second recess 27 edge 28 first sealing element 29 second sealing element 30 third sealing element 31 main body 32 slats 33 Flange section 34 foam element QUOTES CONTAINED IN THE DESCRIPTION

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

[0000] EP 1 274 955

[0002] EP 1 274 955 B1

[0003]

Claims

[1] Coupling device (1) for receiving a pipeline (2), preferably a flexible pipeline, wherein the coupling device (1) comprises a ring element (3) and a pressing element (4), wherein the ring element (3) is rotatable in the circumferential direction between a securing and unlocking position relative to the pressing element (4) and is configured such that the pressing element (4) is pressed inwards at least in sections in the securing position and thereby comes into engagement with the pipeline (2). [2] Coupling device (1), in particular according to claim 1, for receiving a pipeline (2), preferably a flexible pipeline, wherein the coupling device comprises a ring element (3), preferably a pressing element (4), and a sealing element (15), wherein the sealing element (15) comprises a porous material, in particular foam, and / or has a cylindrical shape, wherein the sealing element (15) is designed to seal an outer circumference of the pipeline (2) with respect to the coupling device (1). [3] Coupling device (1), in particular according to claim 1 or 2, for receiving a pipeline (2), preferably a flexible pipeline, wherein the coupling device (1) comprises a ring element (3), and preferably a pressing element (4), wherein the coupling device is equipped by the manufacturer with an identification plate (18), in particular an identification disc, which can be separated, in particular torn off, from a main body of the coupling device (1) and is preferably integrally formed on the main body, preferably the pressing element (4), in the initial state, in particular via at least one, preferably exactly two, more preferably opposite, webs (20). [4] Coupling device (1) according to one of the preceding claims, characterized byin that the pressing element (4) has a plurality of elastically deformable lugs (5) with projections (6), wherein the ring element (3) is configured such that in the securing position the lugs (5) are elastically deformed, in particular pressed inwards, preferably by an inclined surface mechanism (7) between the ring element (3) and the pressing element (4), so that the projections (6) are pressed against the pipeline (2), in particular engage in the pipeline (2). [5] Coupling device (1) according to one of the preceding claims, characterized by that a stop (10) is formed on the ring element (3) and / or pressure element (4), wherein the stop (10) is configured such that rotation in the direction of the securing position is limited. [6] Coupling device (1) according to one of the preceding claims, in particular according to claims 4 and 5, characterized bythat in the securing position one side surface (11) of the lugs (5) is in contact with the stop (10) and / or in the unlocking position another side surface (12) of the lugs (5) opposite the side surface (11) of the lugs (5) is in contact with the stop (10). [7] Coupling device (1) according to one of the preceding claims, characterized by that at least one anti-rotation element (8, 9), preferably comprising or formed by a locking lug, is formed on the pressing element (4), in particular on the lugs (5), and on the ring element (3), wherein the anti-rotation elements (8, 9) are preferably configured to prevent unwanted rotation of the ring element (3) in the direction of the unlocking position relative to the pressing element (4). [8] Coupling device (1) according to one of the preceding claims, characterized bythat a support surface (13) extending inwards in a radial direction of the coupling device (1) is formed on the coupling device (1), in particular on the pressing element (4), wherein the support surface (13) is configured to receive the pipeline (2) at least in sections. [9] Coupling device (1) according to one of the preceding claims, characterized by that a collar (14) extending inwards in a radial direction of the coupling device (1) is formed on the coupling device (1), in particular on the ring element (3), wherein the collar (14) is configured to at least partially absorb bending forces of the pipeline. [10] Coupling device (1) according to one of the preceding claims, characterized by that a / the sealing element, wherein the sealing element is designed to seal an outer circumference of the pipeline (2) relative to the coupling device (1), i) is integrally connected to the pressure element, in particular is injection-molded accordingly; and / or ii) at least one sealing lip, preferably a plurality of sealing lips, which point / point radially inwards from a cylinder portion of the sealing element; and / or iii) has a sealing lip, in particular one which is extended relative to at least one further sealing lip of the sealing element and which, when the coupling device is in the assembled state, rests against one end of the pipeline. [11] Coupling device (1) according to one of the preceding claims, characterized by one, in particular a second, sealing element, which is arranged on the pressure element in such a way that, in the assembled state, a seal against a connecting plate section is possible; and / or a, in particular a third, sealing element which is arranged on the pressing element in such a way that, in the assembled state, a seal against a foam section lying under a / the connecting plate section is possible. [12] System (17) comprising a coupling device (1) according to one of the preceding claims and the pipeline (2), preferably designed as a corrugated pipe. [13] System comprising a coupling device (1) for receiving a pipeline (2), preferably a flexible pipeline, in particular according to one of the preceding claims, in particular a coupling device (1) according to one of the preceding claims and the pipeline (2), preferably designed as a corrugated pipe, as well as a connecting plate section (23), characterized bythat the coupling device (1), preferably the pressing element (4), is or can be releasably connected to an opening (24) of the connecting plate section (23) axially - preferably by at least one connecting element (25) on a surface formed along an outer circumference of the pressing element (4) which projects at least substantially radially. [14] System according to the immediately preceding claim, characterized by a locking and / or snap mechanism to connect the pressure element and the opening. [15] System according to the immediately preceding claim, characterized by that the connection between the pressure element and the opening can be released by turning. [16] System according to the immediately preceding claim, characterized bythat the opening of the connecting plate section has at least one, in particular a first, recess at one edge, wherein a second recess which is deeper than the first recess is preferably arranged immediately adjacent to the first recess.

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