AT511071A4 - CONNECTING DEVICE IN A FINAL ENVIRONMENT OF A CONDUCTOR AND METHOD FOR PRODUCING A CONNECTING DEVICE - Google Patents

Abstract

The invention relates to a plug-and-socket device (1) in an end region (2) of a line (3) with a plug-in sleeve (4) arranged on an outer side (5) of the line (3), which can be plugged into a corresponding receiving sleeve (9) and inserted or a plurality of radial projections (7, 8) on an outer side (6) of the plug-in sleeve (4). It is essential that the plug-in sleeve (4) viewed in the longitudinal direction next to one end (17) of the line (3) has a front part (18) made of metal and then a rear part (19) made of a material which is more elastic than the material of the front part (18) Plastic and that the one or more projections (7, 8) on the outer side (6) of the plug sleeve (4) on the rear part (19) are arranged and the one or more projections (7, 8) in frontally open grooves (10, 11) on an inner side (12) of the receiving sleeve (9) can be inserted. Furthermore, a method for producing such a plug-in device (1) is given. Thereby, a plug-in device (1) or a method for producing such a plug-in device (1) is provided, which plug-in device (1) can be made simpler and cheaper or which method is easier and less expensive to carry out.

Description

The invention relates to a plug-in device which is arranged in an end region of a line, in particular of a tube or hose, and which comprises a plug-in sleeve arranged on an outer side of the line, which can be inserted into a corresponding receiving sleeve. In the inserted state, one or more radial projections on an outer side of the plug-in sleeve engage in grooves on an inner side of the receiving sleeve. Furthermore, a method for producing such a plug-in device is specified.

From the prior art, for example from EP 0 743 479 B1, plug devices are known in which a one-piece plug-in sleeve made of metal or sheet metal is placed on the end of a tube. These sockets are manufactured based on suitable metal forming techniques such as deep drawing. For the formation of radial projections on the outer side of the plug-in sleeve, which secure the plug-in device against rotation in the receiving sleeve, further complex processing steps such as cutting, punching and bending are necessary, whereby the manufacturing cost is increased. In addition, the use of these forming and machining processes in the production of plug-in metal housings for cables with relatively small outer diameters of less than 2.5 cm is very problematic and the production of such receptacles in this way is at least with considerable effort or with considerable Problems connected, if not impossible. The smaller the dimensions of the plug-in sleeve, the more difficult it is, in particular, to manufacture the anti-twist device from the metal sheet. For very small outer diameters especially less than 1.5 cm and thus very small sockets the production of anti-rotation by means of the previously described metalworking process is even virtually impossible. Another • · • *

Disadvantage of one-piece sockets of metal is that the possibilities of shaping during manufacture are limited to a certain extent and thus can not be implemented in every application, a receptacle or plug-in device with the best possible geometry.

The present invention is therefore based on the object to provide a plug-in device in an end region of a pipe, in particular a pipe or hose, which can be made simpler and less expensive and is also suitable for small outer diameters preferably less than 1.5 cm. In particular, the receptacle or parts thereof should also have an improved or optimal geometry. Moreover, it is an object of the invention to provide a method for producing a plug-in device in an end region of a pipe, in particular a pipe or hose, which is easier and less expensive to carry out and also suitable for small outer diameters of preferably less than 1.5 cm ,

The object of the invention is achieved with a plug-in device of the type mentioned, in which moreover the receptacle viewed in the longitudinal direction next to one end of the line comprises a front part made of metal and then a rear part of a plastic material which is more elastic with respect to the material of the front part. Furthermore, one or more radial projections are arranged on the outside of the plug-in sleeve on the plastic rear part, which can be inserted or inserted into the frontally open grooves on the inside of the receiving sleeve.

Due to the at least two-part design of the receptacle made of a metallic front part and a material of the front part elastic rear part made of a plastic plug-in device is easier and less expensive manufacturable, especially because the rotation on the rear part, which by the at least one radial projection, preferably by two diametrically formed on the outside of the rear part opposite radial projections can be made in a very simple manner, for example in an injection molding process. Furthermore, the use of an injection molding process creates the possibility of the geometry of the rear part of the plug-in sleeve and in particular the radial one To improve or optimize projections of the anti-rotation device,

If a line with an outer diameter of less than 2.5 cm, preferably less than 1.5 cm are provided with a plug-in device, so the production of the necessary, small receptacle in a relatively simple manner by the just described, two-part Construction possible. A one-piece production of such a small plug of metal, for example by means of a thermoforming or forming process is associated with at least a considerable effort or with considerable problems, if not impossible.

With such small dimensions, in particular the production of the anti-twist device from a metal sheet is very difficult or virtually impossible.

It is particularly advantageous to design the plug-and-socket device in such a way that a front section of the rear part is sealingly arranged between the outside of the line and a rear section of the front part in an overlapping area of the plug-in sleeve and that pressing from the inside into the line in the overlapping area of the front part and the back part is trained. By the sealing, i. positive and non-positive arrangement of the front portion of the rear part between the outside of the line and a rear portion of the front part is ensured in conjunction with the elasticity of the rear part a sufficient and reliable seal in the overlapping region and thus between the line and the socket. In connection with the pressing therefore no complicated and thus vulnerable processes such as gluing, soldering or welding are required for fixing and sealing of the receptacle in the end region of the line.

In addition, such a plug-in device is also easier and less expensive manufacturable, since the positioning or attachment of the seal is simplified as a part of the rear part between the line and socket. In particular, there are no time-consuming and error-prone processes such as the 4 4 4 "t 4 - * *

I «τ · I

Insertion of a separate sealing ring made of an elastomer or a bonding process for fixing a sealing element necessary. It is expedient if the projection or projections of the anti-rotation lock on the rear part of the plug-in sleeve each have an end face extending at right angles to the longitudinal direction of the plug-in sleeve on the end face facing the grooves. As a result, an at least partial insertion or insertion of the plug-in sleeve in the receiving sleeve is made impossible in the case of projections and grooves which are not aligned with one another, as is possible in particular with projections having obliquely extending end faces. As a result, in particular damage to the receptacle and the receiving sleeve can be effectively avoided.

Such a rectangular design of the end face of each projection is also made possible only by the production of the rotation on the rear part of the receptacle by means of an injection molding. In the known from the prior art production of anti-rotation of a metal sheet by forming in principle, only projections with oblique front end faces are possible especially for small pipe diameters or plugs.

It is also particularly favorable if at least one of the projections projects forwards towards the front end of the plug-in sleeve over a tangential groove in the outer side of the plug-in sleeve, into which groove, in particular a clamp of the receiving sleeve for detachable connection of the plug-in sleeve in the receiving sleeve, a projection having. In this way, an incorrect or twisted insertion of the receptacle in the receiving sleeve by at least one such projection prevents the rotation during a plugging as early as possible.

It is also advantageous if the one or more protrusions of the rotation are made massive and at a line outer diameter of about 1.5 cm each have a side surface of the projections has an area of more than 2.5 mm2, preferably of more than 5 mm2. This results in the advantage of low surface pressure forces on the outer side surfaces of the projections or the corresponding, inner side surfaces of the grooves, provided that the corresponding groove side surfaces are correspondingly large in area and opposite to the side surfaces of the projections. As a result, damage or increased wear of the side surfaces of the projections as well as the corresponding grooves are avoided. It is favorable if the rear part of the plug-in sleeve is formed from a polyamide (PA), in particular from PA 6.12, or a thermoplastic elastomer (TPE). Basically, the material of the rear part should have a tensile modulus of about 100-300 MPa. Such a choice of material represents an ideal compromise between the stability of the rear part and the tightness of the plug-in device between the line and the socket.

It is also particularly advantageous if the front part and the rear part of the plug-in sleeve can be connected via a latching device. In this way, the parts of the receptacle are easy and sufficiently secure connectable and hold even before mounting the receptacle on the line already together. This represents in particular an advantage over a plug-in sleeve made of two metal parts, since relatively complicated processes such as press-fitting and gluing would be required for the effective connection of two such metal parts, because the production of a latching or coupling device is complicated and difficult or especially in the case of two metal parts small sockets would be impossible.

It is also advantageous if a small air gap is formed between the outside of the line and an inner side of the receptacle in the unfinished state of the receptacle on the line, which is sealed after fixing the receptacle on the line at least one point. Such an air gap is preferably less than 0.5 mm, in particular less than 0.1 mm wide and simplifies the manufacture of the plug-in device, since the plug-in sleeve can be easily positioned in the end region on the line and then fixed.

The object of the invention is further achieved by a method for producing a plug-and-socket device in an end region of a pipe, in particular of a pipe or hose, with a pipe arranged on an outside of the pipe

Plug-in sleeve which can be inserted into a corresponding receiving sleeve and wherein in the inserted state, one or more radial projections on an outer side of the plug-in sleeve in grooves on an inner side of the receiving sleeve eingrei fen solved in which the following measures are performed. It is a front part made of a metal in particular by deep drawing or forming and a rear part made of a material more elastic than the material of the front part, in particular by injection molding, wherein the one or more radial projections are formed on the outside of the socket on the rear part and the or the projections in the frontally open grooves on the inside of the receiving sleeve can be inserted or inserted. Then, the front part and the rear part are assembled to form the one-piece plug-in sleeve and the plug-in sleeve thus formed is pushed into the end region of the conduit, wherein the front part of the plug-in sleeve is positioned next to one end of the conduit. In a further step, a compression from the inside is applied to the line in an overlap region of the front part and rear part, in which overlapping region of the plug-in sleeve, a front portion of the rear part between the outside of the conduit and a rear portion of the front part is sealingly arranged.

The technical effects or advantages achieved by the method just described for producing a plug-and-socket device can be taken from the preceding description parts. In particular, the advantage should be mentioned here that in such a method, a check whether a sealing element such as a sealing ring made of an elastomer between line and socket at all present or properly positioned is basically eliminated, since no separate sealing element is used the density member is formed by the front portion of the elastic rear part, which portion is sealingly disposed in the overlapping area of the front part and the rear part between the outside of the conduit and the rear part of the front part.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures. * * * * * Ft * * * * ft * t * ft * "* * ► * * * ·. 7. * * * T * * »·« i * 4 4 «·· ft

In each case, in a highly simplified, schematic representation:

Figure 1 is a side view of a plug-in device for a round line.

FIG. 2 shows an end view of the plug-in device from FIG. 1 (view II); FIG.

Fig. 3 is a sectional view of the connector of FIG. 1 (section line HI HI;

Fig. 4 is a side view of the split socket of the connector of Fig. 1;

5 shows a side view of the plug-in device according to FIG. 1 and a corresponding receiving device in the coupled and locked state;

FIG. 6 is an end view of the coupling device of FIG. 5 (view VI); FIG.

Fig. 7 is a sectional view of the coupling device of Fig. 5 (Schnittli never VII-VII).

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc., related to the immediately described and illustrated figure and are mutatis mutandis transferred to the new situation in a change in position. All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all sub-ranges begin with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.

In Fig. 1, a plug-in device 1 in an end region 2 of a line 3, in particular a pipe or hose, exemplified. FIGS. 2 to 4 show different views, sections and detailed representations of the plug-and-socket device 1.

According to the illustrated embodiment, the Steckvorrich device 1 comprises a socket 4, which is arranged on an outer side 5 of the line 3 in the end region 2. The line 3, which is designed in particular as a flexible tube or flexible hose, preferably has a round cross-section. But there are also 3 lines with a square or rectangular cross-section possible. Inside the conduit 3, liquid and gaseous media are preferably transported, which have an elevated temperature and an increased pressure relative to the environment.

On an outer side 6 of the receptacle 4, a plurality of radial projections 7, 8 are arranged in the embodiment shown. If the plug-in device 1 or the plug-in sleeve 4 is inserted into a corresponding receiving sleeve 9 of a receiving device, as shown in FIGS. 5 to 7, then the radial projections 7, 8 engage on the outside 6 of the plug-in sleeve 4 in the inserted state Grooves 10, 11 on an inner side 12 of the receiving sleeve 9 and thus serve as an anti-rotation device for the plug-in device 1 in the receiving device.

5, the plug-in device 1 and the plug, which or which comprises the socket 4 and the line 3, and the receiving device or socket, which comprises the receiving sleeve 9 and a further line, not shown, in the coupled and locked state shown. These two devices together constitute a coupling device or coupling. FIGS. 6 and 7 show various views and sections of the coupling device. ψ * · · · · · · · · »» »» »· · · ö ö ö ö ö ö · · · · · 4 4 4 4 4 4 4

As best seen in Fig. 1, the Steckhütse 4 has a groove 13 extending along its circumference in its rear portion, which groove 13 is formed by a rear projection 14 and a front projection 15 or limited. The front projection 15 has a conical outer side, so that the front projection 15 tapers in the direction of a front end 31 of the socket 4 in diameter. As best seen in Fig. 6, the receiving sleeve 9 is provided with a clamp 16, which can be pulled out laterally from the receiving sleeve 9 a piece. If the plug-in device 1 is inserted into the receiving device and then the clip 16 is snapped or inserted into the receiving sleeve 9, then several bent portions of the clip 16 engage in the groove 13 of the plug-in sleeve 4 and fix the plug-in device 1 in the receiving sleeve 9 or receiving device , About the bracket 16 so the plug-in device 1 and the receiving device are releasably connected or locked together. As best seen in Fig. 1, the rear projection 14 and the front projection 15 form around the entire circumference and the outer side 6 of the socket 4 circumferential groove 13, wherein the groove 13 is in the rear portion of the socket 4.

As best seen in Figs. 3 and 4, the plug 4 includes viewed in the longitudinal direction next to an end 17 of the line 3, a front part 18 made of metal and then a rear part 19 of a relative to the material of the front part 18 more elastic plastic. The radial projections 7, 8 on the outer side 6 of the receptacle 4 are arranged on the rear part 19 and thus also formed from the plastic of the rear part 19. This also applies to the rear projection 14. The front projection 15 is formed as part of the front part 18 of metal. The radial projections 7, 8 on the rear part 19 of the receptacle 4 are in the frontally open grooves 10, 11 on the inner side 12 of the receiving sleeve 9 inserted or inserted, as best seen in Figs. 6 and 7.

As best seen in Figs. 3 and 4, the front part 18 and the rear part 19 of the receptacle 4 are formed independently and the rear part 19 is over

Locking devices 20 in the front and lower end faces of the radial projections 7, 8 connectable to the front part 18, wherein the latching devices 20 engage in openings 21 in the front side of the front projection 15 or snap.

As shown in FIGS. 3 and 7, in an overlap region 22 of the receptacle 4, a front portion 23 - FIG. 4 - of the rear portion 19 between the outside 5 of the conduit 3 and a rear portion 24 -. 4 - of the front part 18th arranged sealing. To produce or improve the seal between line 3 and receptacle 4 and the connection between the front part 18 and the rear part 19 of the receptacle 4 on the one hand and the receptacle 4 and the line 3 on the other hand is from the inside in the line 3, a compression 25 in Überfappungsbereich 22nd the socket 4 is attached.

In Fig. 7, a seal 35 is shown, which is arranged in the coupled state of the coupling device between the outer side 6 of the receptacle 4 and the inner side 12 of the receiving sleeve 9 and thus the area between plug-in device 1 and receptacle 4 and receiving device or receiving sleeve. 9 seals.

An advantageous method for producing the plug-in device 1 in the end region 2 of the line 3 proceeds as follows. First, the front part 18 made of metal, in particular by deep drawing or forming, and the rear part 19 from the opposite of the material of the front part 18 more elastic plastic, in particular by injection molding, made. The radial projections 7, 8 are formed on the outer side 6 of the receptacle 4 on the rear part 19. Next, the front part 18 and the rear part 19, in particular by means of the latching devices 20 are assembled to form the one-piece socket 4 and this is pushed into the end portion 2 of the line 3, wherein the front part 18 of the socket 4 next to an end 17 of the line 3 is positioned.

According to a particularly expedient embodiment, the sliding of the plug-in sleeve 4 into the end region 2 of the line 3 in the manufacture of the plug-in device 1 is facilitated by a small air gap 26 which is between * · 1 Φ ♦ ·

the outer side 5 of the line 3 and an inner side 27 of the plug 4 in the unfinished state of the receptacle 4 is formed on the line 3, and which air gap 26 after fixing the receptacle 4 on the line 3 at least one point, in particular by the Pressing 25, sealed.

In a last step of the advantageous method for producing the plug-in device 1, namely the pressing 25 is mounted or formed from the inside on the line 3 in the overlapping region 22 of the front part 18 and rear part 19 of the receptacle 4.

By means of such a method even plug-in devices 1 for lines 3 can be produced, which lines 3 have an outer diameter 28 of less than 2.5 cm, preferably less than 1.5 cm. Also, the rear part 19 of the plug-in socket 4 is preferably formed from a polyamide (PA), in particular from PA 6.12, or a thermoplastic elastomer (TPE).

3, the projections 7, 8 on the rear part 19 of the plug-in housing 4 each have an end face 29, 30 extending at right angles to the longitudinal direction of the plug-in socket 4 on the end side facing the grooves 10, 11 or the receiving sleeve 9 on.

Likewise, it is expedient that, as shown for example in Fig. 1, at least one projection 7 forward toward the front end 31 of the socket 4 out on the tangential groove 13 in the outer side 6 of the socket 4 away a projection 32, so that the Projection 7 protrudes partly in the area of the front projection 15 on the front part 18.

Also, the projections 7, 8 are preferably made solid and it has an outer diameter 28 of the conduit 3 of about 1.5 cm each have a side surface 33, 34 of the projections 7, 8, an area of more than 2.5 mm 2, preferably more than 5 mm2.

Thus, the plug-in device 1 in a simple manner in the receiving sleeve 9 can be inserted or inserted, the Steckhüise 4 of the plug-in device 1 is preferably beveled at its front end 31 and tapered in diameter.

For the sake of order, it should finally be pointed out that, for better understanding of the construction of the plug-in device, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size.

The embodiments show possible embodiments of Steckvor-direction, which should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but also various combinations of the individual variants are possible with each other and this variation possibility due to the teaching of technical action by objective invention in the skill of those skilled in this technical field. So are all conceivable embodiments, which are possible by combinations of individual details of the illustrated and described embodiment variant, includes the scope of protection. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

The task underlying the independent inventive solutions can be taken from the description.

• * Λ * ¥ * * * ♦ * -

Reference numeral 1 plug-in device 2 end portion 3 line 4 socket 5 outside 6 outer side 7 projection 8 projection 9 receiving sleeve 10 groove 11 groove 12 inside 13 groove 14 rear projection 15 front Auskrag 16 16 clamp 17 end 18 front 19 rear portion 20 latching device 21 opening 22 overlap area 23 front Section 24 Rear section 25 Compression 26 Air gap 27 Inner side 28 Outer diameter 29 End face 30 End face 31 End 32 Projection 33 Side surface 34 Side surface 35 Seal

Claims (10)

1. Plug-in device (1) in an end region (2) of a line (3), in particular a tube or hose, with a on an outer side (5) of the line (3) arranged plug-in sleeve (4), in a corresponding Receiving sleeve (9) can be inserted and wherein in the inserted state, one or more radial projections (7, 8) on an outer side (6) of the plug-in sleeve (4) in grooves (10, 11) on an inner side (12) of the receiving sleeve (9) engage, characterized in that the plug-in sleeve (4) viewed in the longitudinal direction next to one end (17) of the line (3) has a front part (18) made of metal and then a rear part (19) from a relative to the material of the front part (18 ) comprises more elastic plastic and that the one or more radial projections (7, 8) on the outer side (6) of the plug sleeve (4) on the rear part (19) are arranged and the one or more projections (7, 8) in the frontally open Grooves (10,11) on d he inside (12) of the receiving sleeve (9) can be inserted or inserted. 2. Plug device according to claim 1, characterized in that the line (3) has an outer diameter (28) of less than 2.5 cm, preferably less than 1.5 cm. 3. Plug device according to claim 1 or 2, characterized in that in an overlap region (22) of the plug-in sleeve (4) has a front portion (23) of the rear part (19) between the outside (5) of the conduit (3) and a rear portion (24) of the front part (18) is arranged sealingly and that a compression (25) from the inside to the line (3) in the overlapping region (22) of the front part (18) and rear part (19) is formed. 4. Plug device according to one of the preceding claims, characterized in that the one or more projections (7, 8) each have a right • • An end face (29, 30) extending at an angle to the longitudinal direction of the plug-in sleeve (4) on the end face facing the grooves (10, 11). 5. Plug device according to one of the preceding claims, characterized in that at least one of the projections (7, 8) towards the front end (31) of the socket (4) towards a tangential groove (13) in the outer side (6) Plug-in sleeve (4), in which groove (13) engages in particular a clip (16) of the receiving sleeve (9) for releasably connecting the socket (4) in the receiving sleeve (9), a projection (32). 6. Plug device according to one of the preceding claims, characterized in that the one or more projections (7, 8) are solid and at an outer diameter (28) of the line (3) of about 1.5 cm each have a side surface (33, 34 ) of the projections (7, 8) has an area of more than 2.5 mm 2, preferably of more than 5 mm 2. 7. Plug device according to one of the preceding claims, characterized in that the rear part (19) of the plug-in sleeve (4) consists of a polyamide (PA), in particular of PA 6.12, or a thermoplastic elastomer (TPE) is formed, 8. Plug device according to one of the preceding claims, characterized in that the front part (18) and the rear part (19) of the plug-in sleeve (4) via a latching device (20) are connectable. 9. Plug device according to one of the preceding claims, characterized in that between the outer side (5) of the line (3) and an inner side (27) of the plug-in sleeve (4) in the unfinished state of the plug-in sleeve (4) on the line (3) a small air gap (26) is formed, which is sealed at least one point after the fixation of the receptacle (4) on the line (3). 10. A method for producing a plug-in device (1) in a Endbe rich (2) a line (3), in particular a tube or hose, with a on an outer side (5) of the line (3) arranged plug-in sleeve (4) in a corresponding receiving sleeve (9) can be inserted and wherein in the inserted state, one or more radial projections (7, 8) on an outer side (6) of the socket (4) in grooves (10, 11) on an inner side (12) of the receiving sleeve ( 9), characterized by finishing a front part (18) of a metal, in particular by deep drawing or forming, making a rear part (19) of a plastic which is more elastic than the material of the front part (18), in particular by injection molding, wherein the one or more radial protrusions (7, 8) on the outer side (6) of the plug-in sleeve (4) are formed on the rear part (19) and the one or more projections (7, 8) in the open-sided grooves (10, 11) on the inside (12 de Assembly of front part (18) and rear part (19) for forming the one-piece plug-in sleeve (4), pushing the socket (4) in the end region (2) of the line (3), wherein the front part (18) of the receptacle (4) is positioned next to one end (17) of the conduit (3) and attaching a crimp (25) from the inside to the conduit (3) in an overlapping area (22) of FIG Front part (18) and rear part (19), in which overlapping region (22) of the plug-in sleeve (4) a front section (23) of the rear part (19) between the outer side (5) of the line (3) and a rear section (24) the front part (18) is sealingly arranged. Henn GmbH & Co KG. by Anwäl Partner Rechtsanwa umbH