Pre-packaged media line

Abstract

A pre-assembled media line comprising a connecting element (1) with two connection sections, one of which is designed as a connecting mandrel (3) onto which a media line (2) with a circular cross-section relative to its longitudinal axis is attached, and the other connection section is designed as a plug-in section (4) for insertion into a socket section (5), and the connecting mandrel (3) and the plug-in section (4) have a flow channel (3a, 4a) with a circular cross-section relative to their longitudinal center axes (XX) and (YY), wherein the longitudinal center axes (XX) and (YY) of the connecting mandrel (3) and the plug-in section (4) are perpendicular to each other, and the connecting mandrel (3) and the plug-in section (4) are connected to an inner flow channel by means of a transition section (6), characterized in thatthat the connecting element (1) has a total height (H) measured perpendicular to the longitudinal center axis (XX) of the connecting mandrel (3) and along the longitudinal center axis (YY) of the plug-in section (4), which is equal to an outer diameter of the attached media line (2) with a deviation of up to + 20% and up to - 35% in the area of ​​the connecting mandrel (3), and that the flow cross-sections (Q3, Q4) of the flow channels (3a, 4a) of the connecting mandrel (3) and the plug-in section (4), as well as the flow channel of the transition section (6), each have a cross-sectional size perpendicular to their longitudinal center axis (XX), (YY), (ZZ), which are dimensioned as follows: flow cross-section of the connecting mandrel (3) Q3 ≤ flow cross-section of the transition section (6) Q6 ≤ flow cross-section of the plug-in section (4) Q4, and the transition section (6) is U-shaped in cross-section with respect to its longitudinal center axis (ZZ). where a level floor section (9) is present,which runs in a plane parallel to the longitudinal center axis (ZZ), and a circumferential wall section (10) is present and the bottom section has a width that is greater than the diameter of the flow channel (3a) of the connecting mandrel (3).

Description

[0001] The present invention relates to a pre-assembled media line according to the preamble of claim 1.

[0002] Such a pre-assembled media line is known from DE 10 2009 039 983 A1. The connector according to this prior art has relatively long connection lengths on both sides. Due to these long connection lengths, this known connector, which is designed as an angled connector, cannot be used in installation spaces with limited height. Such connectors cannot be used for applications where the installation space is only slightly taller than the outer diameter of the connected media line.

[0003] The present invention is based on the objective of providing a pre-assembled media line with a connecting element that can be connected on the one hand to a unit and on the other hand to a media line, that can be used in installation spaces with a low height and in which there is only a minimal obstruction of the fluid flow.

[0004] According to the invention, this is achieved by the fact that, starting from a generic connecting element or a generic pre-assembled media line, the connecting element has a total height perpendicular to the central longitudinal axis of the connecting mandrel and measured along a central longitudinal axis of the plug-in section, which is equal to an outer diameter with a tolerance range of up to + 20 % and up to - 35 % of the media line pushed onto the connecting mandrel in the area of ​​the connecting mandrel, and the flow cross-sections of the flow channels of the connecting mandrel and the plug-in section and the flow channel of the transition section each have a cross-sectional size such that the flow cross-section of the transition section is greater than or equal to the flow cross-section of the connecting mandrel and less than or equal to the flow cross-section of the plug-in section.

[0005] Preferably the plug section has a height h1measured on its outer side parallel to its longitudinal center axis, which is 50% of the total height H + / - 20% of the connecting element as well as the height h2 of the transition section in the area of ​​a middle subsection 50% of the total height H + / - 20% of the connecting element.

[0006] In an advantageous embodiment, the transition section has a U-shaped cross-section with respect to its longitudinal center axis, comprising a flat bottom section that runs in a plane parallel to the longitudinal center axis and a circumferential wall section. The bottom section has a width greater than the diameter of the flow channel of the connecting mandrel. Advantageously, the flow channel of the connecting mandrel transitions into the flat bottom section via an inclined surface. According to the invention, this creates a siphon-like profile for the transition section in longitudinal section.

[0007] Through the design and adaptation of the flow cross-sections of the pipe connector according to the invention, flow losses within the transition section are reduced to such an extent that they are not relevant for the flow behavior.

[0008] Advantageous embodiments of the invention are contained in the dependent claims.

[0009] The features according to the invention achieve optimal fluid flow behavior within the pipe connector with a minimal overall height.

[0010] Furthermore, the invention relates to a connecting element for use in the pre-assembled media line according to the invention.

[0011] According to the invention, it is advantageous that the connecting element is formed in one piece in the area where the transition section connects to the connecting mandrel or the plug-in section. Only a sealing cap is provided as a separate part. This sealing cap serves to close a demolding opening opposite the plug-in section. The design of this demolding opening allows the injection-molded connecting element to be demolded in two or, optionally, three directions. This demolding can be performed in the direction of the media line using a cylindrical core and against the insertion direction of the plug-in section using a molded core that can demold the siphon-like, approximately S-shaped inner flow channel and, optionally, simultaneously the flow channel of the plug-in part.This offers the advantage that the entire flow channel can be provided with radii using this type of demolding, thereby minimizing flow losses. It can be advantageous to additionally perform demolding with a cylindrical core in the insertion direction of the plug section.

[0012] After demolding, the demolding opening is sealed by the closure cap using a material-bonded process, such as laser welding, vibration welding, or bonding. Since the closure cap is manufactured as a separate part, it can be designed with a rounded corner at the intersection of the flow channels of the plug section and the transition section, thus ensuring a streamlined design.

[0013] The connecting element according to the invention is advantageously connected to the sleeve section of the unit to be connected via a radially elastically deformable retaining clip, which is attached to the connecting part in a position that can be changed.

[0014] The mounting area of ​​the retaining clip is located on the outside of the transition area, in the axial extension of the diameter of the connecting mandrel. This arrangement allows for a low overall height of the cable connector.

[0015] The invention and advantageous embodiments thereof are explained in more detail with reference to the exemplary embodiment shown in the accompanying drawings.

[0016] They show: Fig. 1 a side view of a pre-assembled cable according to the invention, Fig. 2. Supervision of the assembled line in accordance with Fig. 1, Fig. 3. Make a cut along the cutting line B-B in Fig. 2, Fig. 4. Make a cut along the cutting line C-C in Fig. 3, Fig. 5. Make a cut along the cutting line A-A in Fig. 2, Fig. 6 a longitudinal section through a connecting element according to the invention without a closure cover and without a retaining clip, Fig. 7 a top view of a retaining clip according to the invention, Fig. 8 a view according to the arrow D in Fig. 7.

[0017] In the various figures, identical parts are always marked with the same reference symbols.

[0018] The following description claims that the invention is not limited to the exemplary embodiments and not to all or several features of the described combinations of features; rather, each individual partial feature of the exemplary embodiment is also significant for the subject matter of the invention, even independently of all other partial features described in connection with it, and also in combination with further features of another exemplary embodiment.

[0019] As in Fig. As shown in 1, a pre-assembled media line according to the invention has a connecting element 1 up, which with a media line 2 is connected. The connecting element 1 has two connection sections, one of which is a connection mandrel 3 with a central longitudinal axis X-X is trained, on whom the media management 2which in cross-section form a circular flow channel perpendicular to its longitudinal axis 2a The other connection section is a plug-in section. 4 for insertion into a socket section 5 for example, an aggregate is formed and has a perpendicular to its longitudinal central axis. Y-Y flow channel running in a circular cross-section 4a . The two longitudinal central axes X-X , Y-Y of the connecting mandrel 3 and the plug section 4 They run perpendicular to each other, resulting in the shape of an angled connector. Furthermore, there is a [missing information] between the connecting pin. 3 and the plug section 4 a transitional section 6 The connecting element according to the invention 1 from connecting mandrel 3 , plug section 4 and transition section 6It is designed specifically as an integral, single-piece injection-molded plastic part. This results in cost-effective manufacturing and avoids sealing problems that occur with multi-part construction of the sections. 4 , 6 and the connecting mandrel 3 could occur.

[0020] The connecting element 1 has a total height H perpendicular to the longitudinal center axis X-X of the connecting mandrel 3 and measured along the longitudinal center axis Y-Y of the plug section 4 on, which is the same size as the outer diameter of the attached media line 2 in the area of ​​the connecting mandrel 3 , however, this includes deviations of up to +20% and up to -35%. Furthermore, the flow cross-section Q4 of the plug section 4 equal in size or larger than the flow section Q3 of the connecting mandrel 3The transition section 6 has a flow cross-section Q6 perpendicular to its longitudinal center axis Z-Z on, whereby the following applies Q3 ≤ Q6 ≤ Q4 The transition section 6 is expediently divided into three sections 6a , 6b and 6c subdivided. The flow cross-section Q6 This refers to the aforementioned length of the middle section. 6b constant. The flow cross-section Q6 of the forward section in the direction of flow 6a expands, starting from the flow cross-section Q3 of the connecting mandrel 3 up to the flow cross-section Q6 of the middle section 6b The flow cross-section Q6 of the subsection 6b goes within the area of ​​the flow section Q6 of the subsection 6c over into the flow cross-section Q4 of the plug section 4The subsection 6c This ends in the area of ​​the central longitudinal axis Y-Y of the plug section 4 The flow cross-section Q6 of the transition section 6 is therefore expediently divided into the flow cross-sections of the subsections 6a , 6b and 6c divided. The flow cross-sections Q3 , Q4 , Q6 are adapted in such a way that flow losses in the transition section are minimized. 6 are minimized.

[0021] Furthermore, according to the invention, it is advantageous if the plug section 4 a height h1 , measured on its outer side parallel to its central longitudinal axis Y-Y exhibits Fig. 5, which represent 50% of the total height H of the connecting element 1 The height is, whereby a deviation of, for example, + / - 20% is permitted. h2 of the transition section 6within the area of ​​its section 6b measured perpendicular to its longitudinal center axis Z-Z in particular, it amounts to 50% of the total height H of the connecting element 1 , for example a deviation of + / - 20% is permissible, see Fig. 4. This design gives the plug section 4 a sufficient insertion length, with a circumferential groove, particularly on its outer side 7 for the installation of a circumferential seal 8 is present, which is designed in particular as an O-ring. This arrangement of the circumferential seal... 8 A media tightness of the plug section will be ensured. 4 in the plugged-in state in the socket section 5 ensured. The inventive dimensioning results in an extremely flat design, so that installation in height-limited installation spaces is possible, as in Fig. 1 through an upper disturbance edge St is marked.

[0022] The connecting mandrel 3 For example, it is shaped as a so-called drive-in mandrel, which seals and is self-retaining in the media line. 2 , which may, for example, be a plastic pipe, is pressed in. The media line 2 This is particularly relevant up to a lifting strap. 13 pushed. This stop strap 13 It expediently has the same diameter as the outer diameter of the pushed-on media line. 2 in the area of ​​the attack alliance 13 and then limits the maximum height of the connecting element 1 .

[0023] As especially from Fig. As can be seen in section 3, the transition section has 6 perpendicular to its longitudinal center axis Z-Z seen in particular a U-shaped cross-section with a lower flat bottom section 9 in the area of ​​the subsection 6b , which is in a direction relative to the longitudinal center axis Z-Z runs in a parallel plane.

[0024] Furthermore, there is a surrounding wall section. 10 designed. On this section of the wall 10 There is a cap on its upper end. 11 attached. This sealing cap 11 The closure lid is attached in a liquid-tight manner, particularly by a welded or adhesive bond. 11 closes a demolding opening 11a , which belongs to the plug section 4 and the floor section 9 opposite. The flow channel in the area of ​​the subsections 6a , 6b and 6c the transition section has such a width and is adapted to the flow cross-sections of the flow channels 3a of the connecting mandrel 3 as well as flow channel 4a of the plug section 4 adapted in such a way that through the transition section 6only a minimal impairment of the fluid flow within the connecting element 1 This is done. According to the invention, the flow cross-section in the subsections is 6a , 6b , 6c not smaller than the flow cross-section Q3 in the flow channel 3a of the connecting mandrel 3 The wall section 10 runs perpendicular to the ground section 9 , whereby the transitions between the floor section 9 and the wall section 10 are concavely rounded. Furthermore, from a fluid dynamics perspective, it is advantageous if the flow channel 3a of the connecting mandrel 3 over a sloping surface 12 into the ground section 9 of the flow channel of the transition section 6 This results in a siphon-like formation of the transition section. 6 To ensure a uniform flow through the connecting element 1 from the connecting mandrel3 up to the plug section 4 To ensure this, the invention provides, as described above, for the flow channel in the transition section. 6 to widen, so that the floor section 9 and the inclined surface 12 have a greater width than the size of the inner diameter of the flow channel 3a of the connecting mandrel 3 . Here, the width of the inclined surface takes on 12 from the beginning of the inclined surface 12 to its end and points at the end of the inclined surface 12 the greatest width, where this width is equal to the width of the floor section 9 is, but which towards the end of the subsection 6c can reduce. The transition of the soil section 9 to the plug section 4 It is advantageously convexly rounded.

[0025] Furthermore, it is advisable if the closure lid 11 on its ground section9 facing side and its mouth area of ​​the flow channel 4a of the plug section 4 opposite end a concave rounded section 15 exhibits a corner-free transition at the end of the plug section 4 into the area of ​​the closure lid 11 is present. The rounding section 15 It is advisable to begin in the area of ​​the central longitudinal axis Y-Y and ends in the wall of the flow channel 4a of the plug section 4 These aforementioned features minimize flow losses in the transition section. 6 .

[0026] It is advantageous if the plug section 4 a stop rib on its outer side 14 possesses an insertion limit of the plug section 4 and simultaneously a stop for a front end of the sleeve section 5 represents the floor section9 , which adheres to the inclined surface 12 The connecting piece also forms a stop on its outer side for the end face of the sleeve section. 5 , for which it runs in the same plane as the stop rib 14 .

[0027] Towards the lid 11 offset is parallel to the circumferentially running stop rib 14 a guide rib 16 on the outside at the perimeter of the transition section 6 trained. This guiding rib 16 closes with the stop rib 14 a circumferential guide groove in which a radially elastic retaining clip is inserted. 17 with a C-shaped rim 18 is guided. The retaining clip 17 The stop rib is formed on the one hand by the adjacent sections. 14 and on the other hand, the end of the sleeve section, which is designed as a ring collar. 5pushed. The ring-shaped end of the sleeve section 5 is formed by a circumferential groove 19 in the outer circumference of the sleeve section 5 formed, into which the retaining clip 17 with a locking mechanism 21 , which also has a C-shape, and engages. The locking mechanism has a locking feature for this purpose. 21 one of the ring collar of the sleeve section 5 facing inclined surface, so that the retaining clip 17 when inserting the connecting element 1 through the ring-shaped end of the sleeve part 5 be widened and then placed in the circumferential groove 19 can lock into place.

[0028] The guiding rib 16 closes with the stop rib 14 the guide groove into which the retaining clip 17 with the upper edge bridge 18 is guided. The retaining clip 17 It has a C-shaped circumferential wall. 20, on their upper side, the lid 11 opposite end of the walkway 18 is molded and attached to its edge. 18 opposite end a resting point 21 , which fits into the circumferential groove 19 in the locking position of the retaining clip 17 snaps into place, thereby the connecting element 1 with the socket section 5 is positively connected. Through radial expansion and displacement of the retaining clip. 17 This locking position can be released and the connecting element 1 can be from the socket section 5 to be released. The holding and guiding area of ​​the retaining clip 17 It is therefore advantageously located in an axial area at the transition section 6 , which extends the diameter range of the connecting mandrel 3 lies. As from Fig. As can be seen in figure 8, these are the two ends of the C-shaped retaining clip. 17at their the clamp opening 23 limiting side with a rounded recess 24 trained. This advantageous training ensures that the retaining clip 17 can be pushed open far enough to assume a secure fixation position. These recesses 24 They thus serve to ensure maximum wrapping by the retaining clip 17 to effect and at the same time create a rotation lock for the retaining clip 17 This is achieved. Advantageously, the free end of the C-shaped retaining clip has... 17 on the perimeter wall 20 Grip cams 25 trained, which serve to hold the retaining clip 17 to spread radially and simultaneously shift. The clamp opening 23 The retaining clip points opposite. 17 preferably an interruption 26 in the sidewalk 18 and the marginal approach 21this improves flexibility.

[0029] The siphon-like course of the transition section according to the invention 6 of the connecting element 1 This means that demolding of the connecting element, which is designed as an injection-molded part, is no longer possible. 1 with two axially displaceable cores. For this reason, the invention provides that the connecting element 1 one of the floor section 9 and the plug section 4 opposite demolding opening 11a features which are visible through the lid 11 is sealed. This demolding opening 11a This allows for the demolding of a mold core assembly of the injection mold in two opposite directions, or optionally in three directions. One of these directions involves demolding in the direction of the connected media line. 2with a cylindrical mold core and on the other hand in the direction out of the demolding opening 11a out, i.e., against the insertion direction of the plug section 4 with a mold core which forms the S-shaped inner flow channel of the transition section 6 and, if necessary, simultaneously the demolding of the flow channel 4a of the plug section 4 This enables [something particularly advantageous here]: This type of demolding allows the entire flow channel within the connecting element to be [something]. 1 It can be demolded using its existing radii. If necessary, core demolding can also be performed in the insertion direction of the plug section. 4 with a cylindrical mold core.

[0030] The invention is not limited to the illustrated and described embodiments, but also encompasses all embodiments that have the same effect within the meaning of the invention. It is expressly emphasized that the embodiments are not limited to all features in combination; rather, each individual partial feature can also have inventive significance independently of all other partial features. Furthermore, the invention is not yet limited to the combination of features defined in claim 1, but can also be defined by any other combination of specific features from all disclosed individual features.

[0031] This means that, in principle, practically every single feature of claim 1 can be omitted or replaced by at least one single feature disclosed elsewhere in the application. Reference symbol list 1 connecting element 2 Media Management 2a Flow channel 3 Connecting mandrel 3a Flow channel 4 Plug section 4a Flow channel 5 socket section 6 Transition section 6a, b, c Subsections 7 circumferential groove 8 Perimeter seal 9. Ground section 10 wall sections 11 lids, 11a Demolding opening 12 inclined surface 13. [The following appears to be a separate, unrelated sentence fragment:] Anchor strap 14 Stop rib 15 Rounding section 16 Guide rib 17 Retaining clip 18 Edge (upper) 19 circumferential groove 20 perimeter wall 21 Rast approach 23 Clamp opening 24 recesses 25 finger nocks 26 Interruption Q3 Flow section Q4 Flow cross-section Q6 Flow cross-section H Total height h1 Height of the plug section h2 Height of the transition section XX Longitudinal center axis YY Longitudinal center axis ZZ Longitudinal center axis St Störkante QUOTES INCLUDED IN THE DESCRIPTION

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

[0000] DE 102009039983 A1

[0002]

Claims

[1] Pre-assembled media line comprising a connecting element (1) with two connection sections, one of which is designed as a connecting mandrel (3) onto which a media line (2) with a circular cross-section relative to its longitudinal axis is fitted, and the other connection section is designed as a plug-in section (4) for insertion into a socket section (5), and the connecting mandrel (3) and the plug-in section (4) have a flow channel (3a, 4a) with a circular cross-section relative to their longitudinal center axes (XX) and (YY), wherein the longitudinal center axes (XX) and (YY) of the connecting mandrel (3) and the plug-in section (4) are perpendicular to each other, and the connecting mandrel (3) and the plug-in section (4) are connected to an inner flow channel by means of a transition section (6), characterized by, that the connecting element (1) has a total height (H) measured perpendicular to the longitudinal center axis (XX) of the connecting mandrel (3) and along the longitudinal center axis (YY) of the plug-in section (4), which is equal to an outer diameter of the attached media line (2) with a deviation of up to + 20 % and up to - 35 % in the area of ​​the connecting mandrel (3), and that the flow cross-sections (Q3, Q4) of the flow channels (3a, 4a) of the connecting mandrel (3) and the plug-in section (4) as well as the flow channel of the transition section (6) each have a cross-sectional size perpendicular to their longitudinal center axis (XX), (YY), (ZZ) which are dimensioned as follows: Q3 ≤ Q6 ≤ Q4. [2] Pre-assembled media cable according to claim 1, characterized by, that the plug section (4) has a height (h1) measured on its outside parallel to its longitudinal central axis (YY) which is 50% to + / - 20% of the height (H) of the connecting element (1), and that the height of a middle subsection (6b) of the transition section (6) is 50% to + / - 20% of the height (H) of the connecting element (1). [3] Pre-assembled media cable according to claim 1 or 2, characterized by , that the transition section (6) has a demolding opening (11a) on its side of the connecting element (1) opposite the plug-in section (4), which is closed by a closing cover (11). [4] Pre-assembled media cable according to one of claims 1 to 3, characterized by, that the transition section (6) is divided into three subsections (6a, 6b, 6c), wherein the flow cross-section (Q6) of the middle subsection (6b) is constant over its entire length and the flow cross-section (Q6) of the forward subsection (6a) extends from the flow cross-section (Q3) of the connecting mandrel (3) to the flow cross-section (Q6) of the middle subsection (6b) and this flow cross-section (Q6) transitions into the flow cross-section (Q4) of the plug section (4) in the area of ​​subsection (6c). [5] Assembled media cable according to claim 4, characterized by, that the transition section (6) in the area of ​​the middle subsection (6b) is U-shaped in cross-section with respect to its longitudinal central axis with a flat bottom section (9) in a plane parallel to its longitudinal central axis (ZZ) and with a circumferential wall section (10), wherein the bottom section (9) has such a width that the flow channel enclosed by the bottom section (9) and the wall sections (10) in the subsection (6b) is dimensioned such that there is no narrowing of the flow cross-section compared to the flow cross-section (Q3) of the connecting mandrel (3). [6] Assembled media cable according to claim 5, characterized by , that the flow channel (3a) of the connecting mandrel (3) transitions via an inclined surface (12) into the bottom section (9) of the middle subsection (6b). [7] Assembled media cable according to claim 5 or 6, characterized by, that the bottom section (9) adjoining the inclined surface (12) forms a stop surface for the socket section (5) on its outside, and that, extending from this stop surface, a stop rib (14) is formed on the outside of the plug section (4) in the same plane for the insertion of the socket section (5). [8] Assembled media cable according to one of claims 1 to 7, characterized by , that the plug section (4) has a circumferential groove (7) on its outside for receiving a circumferential seal (8). [9] Assembled media cable according to one of claims 1 to 8, characterized by , that the bottom section (9) in the transition to the flow channel (4a) of the plug section (4) has a convex rounding. [10] Assembled media cable according to one of claims 3 to 9, characterized by, that the closure cover (11) has a concave rounded section (15) on its side facing the bottom section (9) at its end opposite the opening area of ​​the flow channel (4a) of the plug section (4), which extends from the area of ​​the longitudinal central axis (YY) of the plug section (4) to the wall of the plug section (4). [11] Pre-assembled media cable according to one of claims 1 to 10, characterized by , that above the plug-in section (4) on the outside of the transition section (6) in the area of ​​the extended diameter area of ​​the connecting mandrel (3) a C-shaped radially elastic retaining clip (17) is arranged for locking with the sleeve section (5). [12] Assembled media cable according to claim 11, characterized by, that a circumferential guide rib (16) is formed in the direction of the closure cover (11) parallel to the stop rib (14), whereby a circumferential guide groove is formed in which the retaining clip (17) is guided with a rim web (18). [13] Assembled media cable according to claim 12, characterized by , that the retaining clip (17) has a locking projection (21) on its circumferential wall (20) opposite the edge web (18), which engages in a circumferential groove (19) of the sleeve section s (5). [14] Connecting element (1) for use in a pre-assembled media line according to the preamble of claim 1, characterized by the features of the characterizing part of claim 1 alone or in combination with the characterizing part of at least one of claims 2 to 13.

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