DE102020134436A1 - Assembled media line for a plug part - Google Patents

Abstract

The present invention relates to a ready-made media line (1) for connection to a plug part (2), having a holding element (10) with an insertion opening (11) and an insertion channel (12) for the plug part (2 ) and a fluid line (14) which is fluidly connected to the insertion channel (12). The assembled media line (1) also has a retaining clip (18) which is arranged in a clip space (20) of the retaining element (10) so that it can move between a locking position and a release position radially to the insertion channel (12), with the Plug part (2) is blocked by the retaining clip (18) against the insertion direction (E) and in the release position the plug part (2) to be assembled can be removed from the plug-in channel (12) against the plug-in direction (E). The fluid line (14) is designed as a cylindrical receiving space (24) in an end region of the fluid line (14) and the holding element (10) has a sleeve extension (26) pointing in the direction of insertion (E), the insertion channel (12) at the sleeve extension (26) and the sleeve extension (26) projects into the receiving space (24) and is connected to the fluid line (14). The invention also relates to a holding element (10) for assembling such a media line (1).

Description

The invention relates to a ready-made media line for connection to a plug part, for example an SAE male plug. The assembled media line has a holding element with an insertion opening and an insertion channel for the plug part to be mounted in an insertion direction and a fluid line. The fluid line is fluidically connected to the insertion channel. Furthermore, the assembled media line has a retaining clip, which is arranged in a clip space of the retaining element so that it can move radially to the insertion channel between a locking position and a release position. In the locking position, the plug part to be assembled is blocked by the retaining clip counter to the insertion direction, and in the release position the plug part to be assembled can be removed from the insertion channel counter to the insertion direction.

Furthermore, the invention relates to a holding element for assembling a media line.

Plug connectors are known on the market under the name "VOSS plug-in system 241", the connection being made by plugging together a coupling part and a plug part, in particular a male plug designed according to the SAE J 2044 standard. The retaining clip grips behind a collar formed in the SAE connector contour.

From the WO 2017/067949 A1 a connector for hose and / or pipe connections is known. The plug connector has a coupling part which is formed from a base body and a receiving body which is materially connected to the base body. A plug part can be inserted in an insertion direction through an insertion opening of the receiving body into an insertion channel which extends through the receiving body and the base body. A retaining clip is arranged in the receiving body so that it can move radially to the insertion channel, so that an inserted plug part is blocked in a locking position of the retaining clip against an insertion direction and can be removed from the receiving body in a release position of the retaining clip against the insertion direction. A fluid line is connected to the base body and is fluidically connected to the insertion channel. A seal is created between the plug part to be assembled and the coupling part, so that the fluid line can be connected to the base body of the coupling part independently of the structure of the plug part.

It has turned out to be disadvantageous that the assembly of the plug connector or the assembly of the media line has many assembly steps and the plug connector itself is very complex. In particular, the assembly is therefore complex and expensive. Furthermore, in the known plug connector, the coupling part acts both to fix the plug part and to seal against it. As a result, two fluid-tight connections are necessary, on the one hand between the coupling part and the plug part and on the other hand between the coupling part and the fluid line, with each connection representing a possible weak point.

The known connector systems are used in automobile construction, in particular in fuel systems and in heated and unheated SCR systems. SCR stands for "Selective Catalytic Reduction" and refers to a technology for reducing nitrogen oxides in exhaust gases. In vehicle technology, the SCR process is used to reduce nitrogen oxide emissions in diesel vehicles. A 32.5 percent aqueous urea solution, which is uniformly referred to in the industry as AdBlue, is usually carried in the lines of SCR systems. The composition is regulated in DIN 70070 and ISO 22241-1.

In particular, fluid lines made of plastic are used in the known connectors. These can be designed in such a way that they have a high resistance to the aqueous urea solution or, for example, additives in a coolant. In addition, plastic pipelines can be produced easily and flexibly and, in particular, with little effort and cost.

The invention is based on the object of providing a ready-made media line which has a low susceptibility to errors and is easy to assemble and, in particular, is compatible with the known plug parts.

The object is achieved according to the invention by the features of the characterizing part of claim 1. Because the fluid line is designed as a cylindrical receiving space in one end area and the retaining element has a sleeve extension pointing in the direction of insertion, with the insertion channel opening out at the sleeve extension and the sleeve extension protruding into the receiving space and being connected to the fluid line, there is no need for a multi-part coupling part.

The holding element according to the invention is connected directly to the fluid line with little effort and, unlike the coupling part from the prior art, does not have to be first assembled from a receiving body and a base body and then connected to the fluid line. In addition, the one-piece retaining element requires little installation space. The sleeve extension and the receiving space enable a secure and in particular fluid-tight connection between the holding element and the fluid line, with the sleeve extension supporting the fluid line at least partially in the end area.

The embodiment according to the invention also has the advantage that the reduced number of individual components reduces the susceptibility to errors during operation or during assembly.

The fluid line according to the invention is therefore advantageously particularly suitable for use in SCR systems or in thermal management, for example in electric vehicles, or water injection systems, with the fluid line according to the invention also being advantageously usable in other areas of application.

In a further aspect, the holding element is designed in such a way that the plug part protrudes into an area of the fluid line and is expediently sealed directly against an inner wall of the receiving space of the fluid line.

In an advantageous embodiment of the invention, the fluid line has a radial gradation in a transition between the receiving space and a flow section. The radial gradation is designed in such a way that a line diameter of the fluid line in the receiving space is larger than the line diameter of the fluid line in the flow section. The advantageous embodiment of the fluid line with a receiving space and a flow section advantageously separates a holding function and a flow function. The line diameter of the receiving space is expediently larger so that assembly on the sleeve extension can be carried out in the holding section in a simple and material-friendly manner. The line diameter, which is smaller in comparison to the receiving space, is adapted to the fluid requirement and the flow properties of the fluid.

In particular at temperatures around or below the freezing point of the fluid, with an aqueous urea solution for SCR systems regularly from -11 °C, there is a risk that the fluid will freeze and expand. The fluid line is advantageously designed in such a way that it can compensate for ice pressure arising from freezing, in particular better than the holding element. In connection with the embodiment according to the invention, a holding element that is smaller than in the prior art can be used, so that the assembled media line can better withstand the ice pressure. This embodiment can therefore also be used advantageously in thermal management systems, in particular in electric vehicles, or water injection systems.

To produce the media line, the sleeve extension has at least one ring-shaped retaining tooth arranged on a circumferential surface pointing radially outwards with respect to the insertion channel. The sleeve extension expediently has a plurality of annular retaining teeth arranged one behind the other axially with respect to the insertion channel. In a further preferred variant, the sleeve extension has holding teeth distributed uniformly around the circumference. Preferably, the retaining teeth are arranged on a circular path around the sleeve extension, with multiple circular paths preferably being formed one behind the other axially to the insertion channel, each with retaining teeth distributed uniformly around the circumference. The retaining tooth deforms the receiving space of the fluid line radially to the insertion channel to the outside. In particular, the receiving space is elastically deformed, so that the fluid line acts on the sleeve extension with a restoring force, making it more difficult to disassemble the fluid line from the holding element.

For the purpose of a secure connection of the fluid line to the sleeve extension, it is also advantageous if the retaining tooth and the fluid line are designed to correspond to one another such that the retaining tooth cuts into an inner wall of the receiving space when the fluid line is retracted. The retraction movement corresponds to a movement of the fluid line in the insertion direction relative to the holding element.

According to an alternative embodiment, the fluid line is materially connected to the sleeve extension of the holding element, in particular laser-welded. In particular, in the case of an integral connection, the receiving space and/or the sleeve extension are designed in such a way that no or only an extremely low radial stress acting towards the insertion channel acts permanently on the fluid line or the sleeve extension. The sleeve extension is expediently connected to the fluid line in a fluid-tight manner by means of the integral connection.

The connector part is in particular a connector similar to an SAE male connector, expediently an SAE J 2044 male connector. The plug part has a retaining collar, the plug shank extending in a hollow-cylindrical manner from the retaining collar pointing in the direction of insertion. Furthermore, a likewise hollow-cylindrical locking section extends from the holding collar against the direction of insertion. In this case, the locking section has a smaller Scope than the retaining collar, so that the retaining clip can engage behind the retaining collar in the locking section and in the locked position the connector part can be positively blocked against the insertion direction.

A sealing package is expediently arranged in the receiving space of the fluid line for the circumferential radial sealing of the inner wall of the receiving space against the plug shank of the plug part to be assembled. As a result, the plug part is advantageously sealed directly against the fluid line.

Expediently, particularly in the case of thermal management applications, the seal assembly has a sealing element made from a methyl/vinyl silicone rubber (MVQ or VMQ) or an ethylene-propylene-diene terpolymer (EPDM) material. The sealing element is advantageously designed in particular as an O-ring.

In particular, the sealing package has two or more sealing elements. The sealing element is preferably made of an MVQ or VMQ or an EPDM material. Furthermore, the sealing element is preferably designed as an O-ring.

In a preferred embodiment, the sealing pack has at least two sealing elements, in particular O-rings, and at least one spacer arranged between two sealing elements. Preferably, the rear seal, viewed in the insertion direction, is a VMQ seal and the front seal, viewed in the insertion direction, is an EPDM seal.

The holding element expediently interacts synergistically with the sleeve extension and the fluid line with the receiving space and provide a sealing groove for receiving the sealing package. In particular, the sealing assembly is arranged in the sealing groove, the sealing groove consisting of a first groove wall pointing in the direction of insertion, an end face of the sleeve extension pointing in the direction of insertion, the radial gradation as the second groove wall pointing counter to the direction of insertion, and the inner wall of the receiving space between the first and second wall as the groove base is formed.

Advantageously, the seat of the sealing assembly in the receiving space or in the sealing groove can be improved by a further variant. A support ring is preferably arranged in the receiving space behind the sealing assembly, viewed in the insertion direction. This advantageously forms the second groove wall pointing counter to the direction of insertion. The support ring can advantageously be adapted to the requirements in more detail.

The fluid line is preferably designed as a smooth pipe or as a corrugated pipe or as a pipe with smooth pipe sections and corrugated pipe sections. In particular, in the case of a fluid line or end region designed as a smooth tube, the receiving space is produced or adapted by a thermoforming process step, also known as “tuliping open”. The fluid line designed as a corrugated tube or as a tube with smooth tube sections and corrugated tube sections is expediently produced in an extrusion process using a corrugator. In this case, mold blocks represent a negative form for the respective smooth or corrugated pipe section. Advantageously, when using the corrugator, at least some mold blocks have a negative form of the receiving space, so that post-processing, e.g. B. a "tulip up" is omitted.

A further variant provides that the holding element is designed monolithically in one piece with a view to manufacturing as cost-effectively and effortlessly as possible. The retaining clip and/or the retaining element are particularly preferably produced using a plastic injection molding process.

Furthermore, the object on which the invention is based is achieved by means of a holding element according to the invention with the features of claim 11 . According to the invention, the holding element has the features of the holding element according to one of the aforementioned embodiments.

Further advantageous refinements of the invention result from the following description of the figures and the dependent subclaims.

• 1 eine Explosionsdarstellung einer konfektionierten Medienleitung, und
• 2 eine Schnittansicht einer konfektionierten Medienleitung gemäß der Ausführung nach 1 in Riegelstellung, mit einem eingesteckten Steckerteil.

Show it:

• 1 an exploded view of a ready-made media line, and
• 2 a sectional view of a ready-made media line according to the embodiment 1 in locked position, with a plugged-in connector.

In the various figures of the drawing, the same parts are always provided with the same reference numbers.

The following description claims that the invention is not limited to the exemplary embodiments and is not limited to all or more features of the combinations of features described, rather each individual partial feature of the/each exemplary embodiment is also detached from all other partial features described in connection therewith and also in combination with any features of another embodiment of importance for the subject matter of the invention.

1 represents the components of a ready-made media line 1. The ready-made media line 1 is used for connection to a plug part 2, accordingly 2 .

The connector part 2 to be assembled is in particular a connector similar to an SAE male connector, preferably an SAE male connector, preferably an SAE J 2044 male connector. The connector part 2 has, as in 2 shown, a retaining collar 4, wherein a plug shank 6 extends from the retaining collar 4 pointing in a plug-in direction E as a hollow cylinder. Furthermore, a hollow-cylindrical locking section 8 extends from the retaining collar 4 against the insertion direction E.

The assembled media line 1 has according to the 1 and 2 a holding element 10 with an insertion opening 11 and an insertion channel 12 for the plug part 2 to be mounted in the insertion direction E and a fluid line 14 , the fluid line 14 being fluidically connected to the insertion channel 12 . The fluid line 14 is preferably made of a plastic, preferably a polyamide (PA), for example PA6 or PA12. Polypropylene (PP) as a material for the fluid line 14 has also proven advantageous, in particular for conducting cooling liquids. In particular, the plastic fluid lines can be produced and formed inexpensively and with little effort. Furthermore, the material is also advantageously suitable for conducting a liquid urea solution, as is known from SCR systems, and/or coolants.

As in particular in 1 is shown, the assembled media line 1 has a retaining clip 18 . The retaining clip 18 is arranged in a clip space 20 of the retaining element 10 . The position of the retaining clip 18 in the clip space 20 is in 2 shown. The retaining clip 18 is in the clip space 20 between an in 2 shown locking position and a release position, not shown, arranged radially to the insertion channel 12 movable.

in the in 2 shown locking position, the plug part 2 to be assembled is blocked against the insertion direction E by the retaining clip 18, and in the release position, not shown, the plug part 2 to be assembled can be removed from the insertion channel 12 counter to the insertion direction E.

The blocking of the plug part 2 is based in particular on the fact that the plug part 2 in the locking section 8 has a smaller circumference than the retaining collar 4. As a result, the retaining clip 18 can engage behind the holding collar 4 in the locking section 8 and in a locked position the plug part 2 can be positively locked against the insertion direction E To block.

The retaining clip 18 is preferably slotted radially and has at least two latching arms 22 which are spring-elastic at least in some areas. 1 shows an advantageous embodiment of the retaining clip 18 with four latching arms 22, with two latching arms 22 for securing the position of the plug part 2 and two latching arms 22 for supporting and guiding the retaining clip 18 itself. Retaining clip systems of the type mentioned and the structure of the retaining element 10 or the clip space 20 adapted to the retaining clip 18 from the prior art are expedient, in particular the WO 2017/067949 A1 , known.

According to the invention, the fluid line 14 is in one end as a cylindrical receiving space 24, as in 1 shown, trained. Furthermore, the holding element 10, as in the 1 and 2 shown, according to the invention has a sleeve extension 26 pointing in the insertion direction E. In 2 it is shown that the insertion channel 12 according to the invention opens out at the sleeve extension 26 , the sleeve extension 26 protruding into the receiving space 24 and being connected to the fluid line 14 .

The invention has the advantage that the media line 1 has a lower degree of complexity, which has an advantageous effect on production, assembly and susceptibility to errors.

Furthermore, the invention makes it possible for the holding element 10 to be designed in such a way that the plug part 2 protrudes into a region of the fluid line 14 and is expediently sealed directly against an inner wall 28 of the receiving space 24 of the fluid line 14 . 2 shows a representation corresponding to this embodiment.

2 shows an advantageous embodiment, according to which the fluid line 14 has a radial gradation 30 in a transition between the receiving space 24 and a flow section 36 . The radial step 30 is expediently designed in such a way that a line diameter 32 of the fluid line 14 in the receiving space 24 is larger than the line diameter 34 of the fluid line 14 in the flow section 36. By means of this design, a holding and in particular a sealing function is replaced by a flow function axially of the fluid line 14 separated from each other. This is the Receiving space 24 and / or the flow section 36 advantageously adjustable to their required function.

The insertion channel 12 expediently has a channel diameter 38 , at least in the area of the sleeve extension 26 , which corresponds to the line diameter 34 of the fluid line 14 in the flow section 36 . The respective diameters are preferably adapted to the structure of the plug shank 6 so that the plug part 2 is guided through the plug-in channel 12 and/or the fluid line 14 . is advantageous in 2 shown that the plug part 2 with its plug shank 6 protrudes into the flow section 36 of the fluid line 14, the plug shank 6 resting both on an inner wall of the sleeve extension 26 and on an inner wall of the fluid line 14 in the flow section 36 of the fluid line 14. In particular, a bearing clearance of the plug shank 6 relative to the respective wall is designed in such a way that the plug shank 6 is in contact with the respective wall and preferably runs parallel to the fluid line 14 .

According to an advantageous variant, not shown, the sleeve extension 26 has at least one retaining tooth arranged on its peripheral surface 40 pointing radially outwards to the insertion channel 12, which tooth deforms the receiving space 24 of the fluid line 14 radially to the insertion channel 12 outwards. The retaining tooth enables a simple connection of the fluid line 14 to the sleeve extension 26. The retaining tooth is preferably formed in a ring shape on the peripheral surface 40 of the sleeve extension 26. An alternative embodiment provides for the sleeve extension 26 to have a plurality of retaining teeth distributed uniformly around the circumference on the circumferential surface 40 . In particular, the receiving space 24 is elastically deformed by means of the retaining tooth, so that the fluid line 14 acts on the sleeve extension 26 with a restoring force and disassembly of the fluid line 14 from the retaining element 10 or from the sleeve extension 26 in the insertion direction E is made more difficult.

Furthermore, the retaining tooth and the fluid line 14 are preferably designed to correspond to one another such that during a retraction movement of the fluid line 14 in the insertion direction E relative to the retaining element 10 , the retaining tooth cuts into an inner wall 28 of the receiving space 24 .

According to an alternative or supplementary embodiment, which is 2 is shown, the fluid line 14 is materially connected to the sleeve extension 26 of the holding element 10, in particular laser-welded. The fluid line 14 or the receiving space 24 is expediently integrally connected to the sleeve extension 26 over the entire circumference, with the fluid line 14 or the receiving space 24 particularly preferably also being integrally connected to the sleeve extension 26 via a welded section 42 of the sleeve extension 26 that extends axially with respect to the insertion channel 12 . In particular, in the case of an integral connection, the receiving space 24 and/or the sleeve extension 26 are designed in such a way that no or only an extremely low stress acting radially to the insertion channel 12 acts permanently on the fluid line 14 or the sleeve extension 26 . The sleeve extension 26 is expediently connected in a fluid-tight manner to the fluid line 14 by means of the integral connection.

A sealing package 44 is preferably arranged in the receiving space 24 of the fluid line 14 for the circumferential radial sealing of the inner wall 28 of the receiving space 24 against the plug shank 6 of the plug part 2 to be assembled. As a result, the plug part 2 is advantageously sealed directly against the fluid line 14 . The sealing package 44 also expediently prevents or reduces the risk of a fluid conducted through the fluid line 14 getting into the insertion channel 12 and making direct contact with the holding element 10 . In particular, the fluid is transferred directly from the fluid line 14 into a channel of the plug shank 6 by means of the sealing pack 44 arranged in the receiving space 24 .

In particular, the sealing pack 44 has one, preferably at least two, sealing elements 46 . The exemplary embodiments in the 1 and 2 each have two sealing elements 46 . The sealing element 46 is preferably made of a methyl/vinyl silicone rubber (MVQ or VMQ) or an ethylene-propylene-diene terpolymer (EPDM) material. Furthermore, the sealing element 46 is preferably designed as an O-ring.

The in the 1 and 2 In the advantageous embodiments illustrated, the seal assembly 44 has two sealing elements 46, in particular O-rings, and at least one spacer 48 arranged between two sealing elements. In the case of a seal assembly 44 with more than two sealing elements 46, a spacer 48 is preferably arranged between two sealing elements 46 in each case. Preferably, the rear seal viewed in the direction of insertion E is in the exemplary embodiments in FIGS 1 and 2 a VMQ seal and the front seal viewed in the insertion direction E is an EPDM seal.

According to a variant that is not shown, the plug shank 6 is sealed against the inner wall 28 of the receiving space 24 with more than one seal assembly 44 . Appropriately are between tween the seal packs 44 preferably arranged spacer sleeves.

The sealing package 44 is particularly advantageously arranged in a sealing groove. The sealing groove is preferably as in 2 shown, provided by a synergetic interaction of the holding element 10 with the sleeve extension 26 and of the fluid line 14 with the receiving space 24 . The sealing groove is expediently formed from a first groove wall pointing in the insertion direction E, a second groove wall pointing counter to the insertion direction E, and a groove base. In particular, the first groove wall is formed from an end face 50 of the sleeve extension 26 pointing in the insertion direction E. The second groove wall is preferably formed from the radial step 30 between the receiving space 24 and the flow section 36 . The bottom of the groove is preferably formed from the inner wall 28 of the receiving space 24 between the first and second walls. According to an embodiment that is not shown, the second groove wall is formed by the support ring as an alternative to the radial step 30 .

In 2 A first embodiment of the radial gradation 30 is shown, according to which the radial gradation 30 has edge-like transitions to the receiving space 24 or to the flow section 36 . Alternatively, the radial gradation is advantageously rounded, so that in particular a transition to the inner wall 28 of the receiving space 24 or the bottom of the groove and/or a transition to an inner wall of the fluid line in the flow section 36 has a radius. The radius expediently improves the contact of the sealing element 46 and prevents a notch effect.

The fluid line 14 is preferably designed as a smooth pipe or as a corrugated pipe or as a pipe with smooth pipe sections and corrugated pipe sections. In particular, the receiving space 24 in the case of a fluid line 14 designed as a smooth tube, or end region, is produced or adapted by a thermoforming process step, also known as “tuliping open”. The fluid line 14 designed as a corrugated tube or as a tube with smooth tube sections and corrugated tube sections is expediently produced in an extrusion process using a corrugator. In this case, mold blocks represent a negative form for the respective smooth or corrugated pipe section. Advantageously, when using the corrugator, at least some mold blocks have a negative form of the receiving space 24, so that post-processing, e.g. B. a "tulip up" is omitted.

The retaining element 10 and/or the retaining clip 18 are each preferably monolithically formed in one piece, which is advantageous for production and assembly. The retaining clip 18 and/or the retaining element 10 are particularly preferably produced using a plastic injection molding process.

According to the invention is also the holding element 10, as exemplified in FIGS 1 and 2 is shown for the assembly of a media line 1, in particular a media line 1 according to one of the aforementioned exemplary embodiments. According to the invention, the holding element 10 has the features of the holding element 10 according to at least one of the aforementioned exemplary embodiments.

• - Präparieren der Fluidleitung 14 vorzugsweise mit einem Aufnahmeraum 24. Dies kann insbesondere bei einem Glattrohr vorzugsweise mittels Thermoforming („Auftulpen“) oder bei einem im Korrugator hergestellten Rohr über die Anpassung der Formbacken geschehen.

• - Vorzugsweise ein Positionieren des Stützrings in der Fluidleitung 14, insbesondere im Aufnahmeraum 24. Vorzugsweise wird der Stützring in Einsteckrichtung E betrachtet vor der radialen Abstufung 30 bzw. sich an der radialen Abstufung 30 in Einsteckrichtung E abstützend im Aufnahmeraum 24 positioniert.
• - Zweckmäßig Durchführen eines Kalibrierungsschnitts, d. h. ein von den geforderten Längentoleranzen abhängiger Schnitt, senkrecht zur Fluidleitung 14.
• - Vorteilhaft Positionieren der Halteklammer 18 in dem Klammerraum 20 des Halteelements 10.
• - Vorzugsweise Einstecken eines Haltedorns in Einsteckrichtung E durch den Einsteckkanal 12, so dass vorzugsweise der Haltedorn in Einsteckrichtung E weisend mit einem Montageüberstand aus den Hülsenfortsatz 26 hervorragt.
• - Bevorzugt Anordnen der Dichtelemente 46 bzw. des/der Dichtungspakets/e 44 auf dem Montageüberstand des Haltedorns.
• - Bevorzugt Einführen der Baugruppe, bestehend aus Halteelement 10, Halteklammer 18, Haltedorn und Dichtungspaket 44, in Einsteckrichtung E in die Fluidleitung 14, insbesondere in den Aufnahmeraum 24.
• - Stoffschlüssiges Verbinden, vorzugsweise Verkleben und/oder Verschweißen, der Fluidleitung 14 mit der Wandung der Fluidleitung 14, insbesondere in dem Schweißabschnitt 42, in einem Überschneidungsbereich des Hülsenfortsatzes 26. Sofern gemäß einer vorteilhaften Ausführung der Hülsenfortsatz 26 ein oder mehrere Haltezähne aufweist, ist gemäß einer bevorzugten Variante der Konfektionierung eine zusätzliche stoffschlüssige Verbindung des Hülsenfortsatzes 26 mit der Fluidleitung 14 nicht notwendig.

Preferably, an advantageous assembly of the media line 1, which corresponds to one of the aforementioned variants, at least partially has the following method steps:

• - Preparing the fluid line 14 preferably with a receiving space 24. This can be done in particular in the case of a smooth tube preferably by means of thermoforming (“bulging”) or in the case of a tube produced in the corrugator by adapting the mold jaws.

• Preferably, the support ring is positioned in the fluid line 14, in particular in the receiving space 24. The support ring is preferably positioned in the receiving space 24 in front of the radial step 30, viewed in the direction of insertion E, or is supported on the radial step 30 in the direction of insertion E.
• - Appropriately performing a calibration cut, i.e. a cut dependent on the required length tolerances, perpendicular to the fluid line 14.
• - Advantageous positioning of the retaining clip 18 in the clip space 20 of the retaining element 10.
• - Preferably inserting a retaining mandrel in the insertion direction E through the insertion channel 12, so that preferably the retaining mandrel protrudes in the insertion direction E pointing with an assembly overhang from the sleeve extension 26.
• - Preferably arranging the sealing elements 46 or the / the seal package / s 44 on the assembly overhang of the retaining mandrel.
• - Preferably inserting the assembly, consisting of retaining element 10, retaining clip 18, retaining mandrel and seal assembly 44, in the insertion direction E into the fluid line 14, in particular into the receiving space 24.
• - Cohesive connection, preferably gluing and/or welding, of the fluid line 14 to the wall of the fluid line 14, in particular in the welded section 42, in an overlapping area of the sleeve extension 26. If, according to an advantageous embodiment, the sleeve extension 26 has one or more retaining teeth, an additional material connection of the sleeve extension 26 to the fluid line 14 is not necessary according to a preferred variant of the assembly.

The packaging steps mentioned above are not tied to the chronological order in which they were mentioned. For example, it is just as advantageous if the assembly, consisting of the holding element 10, holding clip 18, holding mandrel and sealing package, is first assembled and then the fluid line 14 with the receiving space 24 is produced or prepared. Furthermore, not all method steps are always necessary in order to arrive at a media line 1 made up according to the invention. However, the fluid line 14 should expediently be provided with a receiving space 24 in at least one method step and the sleeve extension 26 of the holding element 10 should be inserted into the receiving space 24 in at least one further method step. Further method steps depend in particular on the characteristics of the media line 1 to be produced.

The invention is not limited to the exemplary embodiments shown and described, but also includes all embodiments that have the same effect within the meaning of the invention. It is expressly emphasized that the exemplary embodiments are not limited to all features in combination; rather, each individual partial feature can also have an inventive significance independently of all other partial features. Furthermore, the invention has not yet been limited to the combination of features defined in claim 1, but can also be defined by any other combination of specific features of all the individual features disclosed overall. This means that in principle practically every individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed elsewhere in the application.

Reference List

1

Assembled media line

2

plug part

4

retaining collar

6

connector shaft

8th

locking section

10

holding element

11

insertion opening

12

plug-in channel

14

fluid line

18

retaining clip

20

bracket space

22

locking arm

24

recording room

26

sleeve extension

28

inner wall of the receiving space

30

gradation

32

Cable diameter in the receiving space

34

Line diameter in the flow section

36

flow section

38

channel diameter

40

peripheral surface

42

welding section

44

sealing pack

46

sealing element

48

spacers

50

Front surface of the sleeve extension

E

insertion direction

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• WO 2017/067949 A1 [0004, 0039]

Claims (11)

Ready-made media line (1) for connection to a plug part (2), having a holding element (10) with an insertion opening (11) and an insertion channel (12) for the plug part (2) to be mounted in an insertion direction (E) and a fluid line ( 14), which is fluidically connected to the insertion channel (12), further comprising a retaining clip (18) which is arranged in a clip space (20) of the retaining element (10) so that it can move radially to the insertion channel (12) between a locking position and a release position, wherein in the locking position the plug part (2) to be assembled is blocked by the retaining clip (18) counter to the direction of insertion (E) and in the release position the plug part (2) to be assembled can be removed from the plug-in channel (12) counter to the direction of insertion (E). , characterized in that the fluid line (14) is formed in an end region of the fluid line (14) as a cylindrical receiving space (24) and the holding element (10) in d The sleeve extension (26) points in the insertion direction (E), the insertion channel (12) opening at the sleeve extension (26) and the sleeve extension (26) protruding into the receiving space (24) and being connected to the fluid line (14). Assembled media lines (1) according to claim 1 , characterized in that the fluid line (14) has a radial step (30) in a transition between the receiving space (24) and a flow section (36), so that a line diameter (32) of the fluid line (14) in the receiving space (24) is larger than the line diameter (34) of the fluid line (14) in the flow section (36). Assembled media lines (1) according to claim 1 or 2 , characterized in that the sleeve extension (26) has at least one ring-shaped retaining tooth or retaining teeth distributed evenly around the circumference on its circumferential surface (40) pointing radially outwards with respect to the insertion channel (12) and radially opening the receiving space (24) of the fluid line (14). deform outwards towards the insertion channel (12). Assembled media lines (1) according to claim 3 , characterized in that the retaining tooth and the fluid line (14) are designed to correspond to one another in such a way that when the fluid line (14) moves back in the insertion direction (E) relative to the retaining element (10), the retaining tooth penetrates into an inner wall (28) of the receiving space ( 24) cuts in. Assembled media lines (1) according to one of Claims 1 until 4 , characterized in that the fluid line (14) with the sleeve extension (26) of the holding element (10) materially, in particular laser-welded, is connected. Assembled media lines (1) according to one of claims 2 until 5 , characterized in that in the receiving space (24) of the fluid line (14) a seal assembly (44) for circumferential radial sealing of an inner wall (28) of the receiving space (24) against a plug shank (6) of the plug part (2) to be assembled is arranged. Assembled media lines (1) according to claim 6 , characterized in that the seal package (44) has at least two sealing elements (46), in particular O-rings, and at least one between two sealing elements (46) arranged spacers. Assembled media lines (1) according to claim 6 or 7 , characterized in that the sealing assembly (44) is arranged in a sealing groove, the sealing groove consisting of a first groove wall pointing in the direction of insertion (E) of an end face (50) of the sleeve extension (26) pointing in the direction of insertion (E), the radial gradation (30) as the second groove wall pointing in the direction of insertion (E) and the inner wall (28) of the receiving space (24) between the first and second walls as the groove base. Assembled media lines (1) according to one of Claims 1 until 8th , characterized in that the holding element (10) forming the clamping space (20) and the insertion channel (12) is monolithically designed in one piece with the sleeve extension (26). Assembled media lines (1) according to one of Claims 1 until 9 , characterized in that the retaining clip (18) and / or the retaining element (10) are produced in the plastic injection molding process. Retaining element (10) for assembling a media line (1), in particular a media line (1) according to one of Claims 1 until 10 , Characterized by the features of the holding element (10) according to at least one of Claims 1 until 10 .

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