FI122190B - Pipe fittings - Google Patents

Description

The present invention relates to a type 5 pipe reinforcement as set forth in the Specification of Claim 1.

Pipe fittings for detachable connection of plastic pipes to fittings or adapters are known in the art, wherein the pipe to be connected to the adapter is surrounded by a cutting ring that cooperates with the annular groove associated with the adapter. and certainly a pull against power.

It is an object of the present invention to provide a pipe adapter for implementing a non-detachable pipe connection 15 with a fixture that secures the pipe with a retractable and tight connection with the adapter while simplicity of installation.

This object of the invention is achieved by the features set forth in the part of claim 1. A surprising advantage here is that the connecting tube, together with the flange ring 2 0, is securely tightened in the receiving chamber between the tube adapter and the ring adapter and withstands a high retention force on the possible pull-out force in the line. The structure provides a durable joint while providing high strength.

The structure of claim 2 is then possible because it provides an accurate traction force exerted on the ring adapter.

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The structure according to claim 3 is then advantageous because it allows for simple tool geometry, manufacturing tools, in particular injection molding tools

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However, the structure according to claim 4 is also advantageous because it provides

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it is possible to exclude any supporting sleeves to prevent retraction of the connection tube in the event of withdrawal force.

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According to the preferred further embodiments described in claims 5 and 6, the contact surface is enlarged in the joint region between the tubular adapter and the ring adapter, thereby providing a high clamping force.

The advantageous construction described in claim 7 achieves precise pre-positioning of the coupling tube to the ring adapter for carrying out the coupling operation.

In this connection, the structure according to claim 8 is also possible because it reliably prevents the connection pipe being pulled out.

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Also, the structure of claim 9 is advantageous in providing an axial play to achieve appropriate cooperation between the tubing adapter and the ring adapter spokes during the jointing operation.

However, the structure according to claim 10 is also advantageous, whereby the sealing ring can achieve reliable sealing both radially and axially.

However, in this case, the structure of claim 11 is also possible, which makes it possible to use standard sealing rings.

Further, the structure according to claim 12 is advantageous, which facilitates installation due to the secure pre-positioning of the sealing ring and effectively prevents installation errors.

By virtue of the advantageous further developed structure known from claim 13, the effect of the bending forces exerted on the connecting tube is also substantially reduced in the connection between the tube adapter and the ring adapter, co

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Preferred further developed structures known from the claims 14 to 16 determine installation dimensions, i.e. the total length of the pipe reinforcement exactly.

The advantageous construction of claim 17 makes it possible to use conventional tools for mounting pipe fittings.

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The further developed structures disclosed in claims 18-20 provide versatile use of pipe fittings for various types of installation needs.

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The structure according to claim 21 is also possible, which provides additional protection against bending forces in the connection pipe, and the solutions provided by such a structure, especially when the pipe connection or pipe connector is used in connection with gas pipeline installations, are very safe to implement.

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However, the structure of claim 22 is also possible because it provides a secured compression fit for the sealing ring in the receiving chamber.

Advantageous further developed structures known from claims 23 and 24 effectively prevent retraction of the connecting pipe and hence the tightness of the pipe reinforcement. However, it is also possible in many cases to dispense with the use of the support sleeve in connection with the connecting pipe.

The structure known from claim 25 makes it possible to carry out an inexpensive manufacturing process which is particularly well suited for mass production.

However, in this case, the structure according to claim 26 is possible, thereby introducing a well-known material having reliable welding properties.

Finally, the structure according to claim 27 is still advantageous, which makes it possible to directly connect the structure according to the invention to such pre-assembled g assemblies without the use of additional screw adapters, flanges, etc.

The present invention will be explained in more detail on the basis of the following structural examples, in which:

Figure 1 is a side elevational view of the pipe fittings of the invention;

Figure 2 shows a detail of the pipe fittings of Figure 1; 4

Figure 3 illustrates another structure of tube reinforcement in connection with the housing; 5

Figure 4 illustrates another structure of tube reinforcement in connection with the housing;

Figure 5 illustrates another structure of pipe reinforcement; Figure 6 shows a detail of the pipe armature connection area;

Fig. 7 is a sectional view of another structure of pipe reinforcement;

Figure 8 is a sectional view of another structure of pipe reinforcement.

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It is provisionally noted that in the various embodiments described, the same parts are identified by the same reference numerals, the same component parts, so that the factual information contained in the specification as a whole can of course be used in connection with the same parts having the same reference numerals. Also, the position information used in the description, such as the top, bottom, side, etc., of the figures immediately explained and shown, must of course be moved to the new position when the position is changed. In addition, the individual features or combinations of features of the various structural examples presented and described may in themselves constitute independent, inventive or inventive solutions.

§ 25 io Figures 1 and 2 show a pipe fitting 1 in connection with an example of connecting a pipe 2, in particular a plastic pipe 3, to a fitting 4, for example a connector, housing, g bore, etc. The pipe fitting 1 consists of a pipe adapter 5 a ring adapter 6 connected to a tube adapter 5 and a connecting tube 9 and at least one sealing ring 11, for example an O-ring 12, located in the region 10 of the tube adapter 5 and o BO ring through the bores 7, 8 of the adapter 6.

The tubular adapter 5 is a hollow cylindrical shaped portion having an end region 13 provided with an external thread 14 according to the embodiment shown. A flange 16 is formed in the opposite end region 15. The flange 16 is annularly extending from an annular end surface 17 facing the annular adapter 6. in a circular, trapezoidal tongue 18.

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The ring body 6 is also provided with a flange 19 opposite the flange 16 to form a groove 21 receiving the tongue 18 of the tube adapter 5. This structure ensures a very strong and centered connection between the tube adapter 5 and the ring adapter 6.

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The through bores 7, 8 of the tube adapter 5 and the ring adapter 6 have the same internal diameter 22 and corresponds essentially to the outer diameter 23 of the connecting tube 9 received by the through bores 7, 8, which extends 24 into the tube adapter 5 and opposite the end region 6 15 together with this end region 25 for connecting the so-called tip end 26 to the pipeline 2. The insertion depth 24 is limited by the stop members 28 extending over the inside diameter of the tubular adapter 5 in the direction of the longitudinal center axis 27, for example formed and evenly spaced over the inner periphery. However, it is also possible to form the stop member 28 in the form of an annular member, whereby one overhang 29 extending over the inner diameter 22 in the direction of the longitudinal center axis 27 is not greater than the wall thickness 30 of the connecting pipe 9.

To provide pull-out securing of the connecting tube 9, it is provided with an annular flange ring 31 in the area of the ring adapter 6, and the ring adapter 6 is provided with an annular cm 25 receiving chamber 32 in the through bore 8 to receive the flange ring 31. is approximately equal to or greater than the wall thickness 30 of the connecting tube 9. The annular abutment face 36 of the flange ring 31 rests on the abutment face 37 of the receiving chamber 32 opposite it, with the face 38 formed by the abutment faces co 36, 37 30 frames against the longitudinal center axis 27.

o cm pipe fittings In this way, one may receive the arrows on January 39 parallel to pipe fittings - the pull-out force.

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The sealing ring 11 is disposed on the circumferential side in connection with the flange ring 31, for which purpose a second step formed in the passage bore 8 of the ring body 6 is provided with an annular groove 40 for the sealing ring 11. The groove 5 40 has a slightly smaller cross-section than the maximum cross-sectional dimension of the sealing ring 11, thereby providing a compression fit in the groove 40 to achieve a reliable sealing effect.

The connection between the tube adapter 5 and the ring adapter 6, in the region 10 of the connection 10 comprising the tongue 18 and the groove 21, is preferably accomplished by a friction welding operation. Of course, bonding is also possible.

Further, as can be seen from Figure 1, the tip 26 of the connecting tube 9 is preferably connected to the tube 2 by a butt welding operation, in particular by means of mirror welding known in the art for this purpose.

As can still be seen by the broken lines in Figure 2, it is of course also possible, instead of the external thread 14, to form a flange 41 in the end region 13 of the pipe adapter 5 for connection to the armature 4, for example valve, spout housing, pipe clamp 20.

One similar attachment head to the pipe armature 1 could instead of using a flange 41 surrounding a cylindrical end region 13 include the use of a plurality of circumferential fastening rails.

§ 25 i o However, the structures described with the aid of the flanges 41, respectively, are more complicated with respect to the tool structure for the injection molding of the plastic material c adapter 5, co

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Implementation of the jointing region 10 by the tongue 18 in connection with the pipe adapter 5 and the groove 21 in the ring adapter 6 o o is one of the various other ways of increasing the contact area therebetween to achieve high strength and at the same time center the parts. for accurate axis alignment. Of course, other type 7 contact surface structures are also possible. However, for the "friction welding" method, a rotational symmetrical structure is mandatory since such an operation requires both the joint pressure as well as the relative movement between the surfaces to be joined, and in this case by the rotational movement of the parts.

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Figure 3 then shows another structure of the pipe armature 1. In accordance with this construction, the tube adapter 5 is integrally formed with the housing 42, for example the lower sliding housing 43 of the barrier valve. Such a construction allows the pipeline 2 to be directly connected to the flange ring 10 31 located in the receiving chamber 32 of the ring adapter 6 by attachment between the pipe adapter 5 and the ring adapter 6 formed in connection with the connecting pipe 9 and its housing 42. Equipping the connection area 10 with the receiving chamber 32 for the flange ring 31 and the manner in which the sealing ring 11 is located correspond to the construction examples already explained in the previous figures.

Fig. 4 shows another constructional example of the pipe armature 1, in which the pipe adapter 5 is immediately shaped into the housing part 44 of the drill collar 45.

Such a structure is particularly suitable for directly connecting the conduit 2 to the supply conduit 46 by attaching a housing part 44 where a passage 20 is formed in the conduit wall. The other construction of the ring adapter 6, the connecting tube 9 together with the flange ring and the sealing ring corresponds to the examples already described.

Fig. 5 shows another structure of the pipe armature 1. The end region 15 of the tube adapter 5 is provided with an internal thread 47 for connection to the CM 25 according to this construction example. To limit the insertion depth 24 of the connecting tube 9, the stop member 28 is formed as a stop ring 48 according to this exemplary embodiment.

i h- · c The structure 10 of the joint region 10 between the tube adapter 5 and the ring adapter 6, where the connecting tube 9 is secured by the flange ring 31 and the sealing ring 11 surrounding the flange ring, co0 30 corresponds to the structures described in the previous examples.

This design example further illustrates a possible welding connection between the connecting tube 9 and the conduit 2 by means of a welding sleeve 49 surrounding the tip end 26 and the conduit 2 in the region of the butt 8. The welding sleeve 49 is provided with an electrically powered heating coil 51. By applying the temperature achieved therewith, melting occurs while forming a welding layer 52 between the inner wall of the welding sleeve 49 and the outer wall of the coupling tube 9, tip 26 and conduit 2. is a support sleeve 53 disposed over the joint area 10, in particular a thin-walled metal sleeve. This will help to effectively prevent the connection pipe 9, the radial-direction to retract the longitudinal central axis 27 in the direction - the direction of arrow 54 in a direction -vaikuttavan the pull-out effect of the force, so that the annular flange 31 does not come off the connection rengasadapterissa 32 with 6 in the receiving chamber even larger -10 direction of arrow 54 - the active pull-out forces, the influence.

Fig. 6 shows another structure of the pipe armature 1 with respect to the connection area 10 between the pipe adapter 5 and the ring adapter 6.

This further developed embodiment relates in particular to the structure of the flange ring 31 of the connecting tube 9 and the receiving chamber 32 and to the manner of placement of the sealing ring 11. The flange ring 31 and the 32 in connection with the receiving chamber abutment surfaces 36, 37 are formed in accordance with the structure of a truncated cone longitudinal central axis 27 with respect to using concentric conical shroud-papinnan the imagined diaper lines intersect the longitudinal center axis 27 of section 20 at point 55, which is shifted with respect to the flange ring 31 - direction of arrow 54 - the active effect of pulling force against direction. This results in the generation - in connection with the active withdrawal force presence radially flange ring 31 - - 54 in the direction of the arrow 56 in the direction of arrow - the active component of force, whereby the connecting pipe 9 in the longitudinal pullout direction of the central axis 27 is effectively prevented. The cone angle 57 of the imaginary cm 25 cone is preferably about 150 ° to 170 °.

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As can be further seen from Fig. 6, the circumference of the flange ring 31 is provided with a support groove 58 formed by a circular recess for positioning the O-ring 12. The ring adapter 6 is provided with a sealing surface 59 facing the circumference 30 of the O-ring 12, which roughly corresponds to the circumference of the O-ring 12. However, the sizing must be adapted according to the compression fit of the O-ring 12 to achieve

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Fig. 7 shows another embodiment of the pipe armature 1 showing the joint region 10 between the pipe adapter 5 and the ring adapter 10 which seals the pipe adapter 5 to the pipe adapter 5 by means of a sealing ring 11. The joint between the pipe adapter 5 and the ring adapter 6 is described, preferably by means of a friction welding joint between the flange 16 of the flange 16 of the tube adapter 5 and the groove 19 of the ring adapter 6. The connecting tube 9 is held in place by the flange ring 31 in the receiving chamber 32 of the ring adapter 6 and is radially secured against the longitudinal retraction of the tube wall by radially extending through the opposite facing surfaces 36, 37 of the blunt cone . The sealing ring 11 in the receiving chamber 32 is clamped between the flange ring 31 and the opposing end faces 60, 61, the end face 61 of the tube adapter 5 being provided with a clamping ring 62 extending therethrough to achieve sealing.

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Fig. 8 shows another structure of the flange ring 31 of the pipe fitting 9 of the pipe fitting 1 to provide retaining effect against retraction of the pipe wall in the direction of the longitudinal center axis 27, the junction 10 between the pipe adapter 5 and the ring adapter 6;

The flange ring 31 is provided with a circumferential groove 65 on the end surface 64 opposite the sealing ring 11 for the support wall for the pipe wall of the connecting tube 9. The ring adapter 6 is provided with a ring adapter 6 with a ring adapter 6 after combining alileikkausuran 65 in a projecting support ring 66. This effectively prevents ^ connecting the tube wall of the tube 9 - the direction of the arrow 67 - also in the withdrawal ir 5 and the connecting pipe 9 between larger, in connection with the tube axis direction of the adapter vetoed loads, Co. No. 30

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Finally, it can be mentioned that the material of the elements of the pipe fitting 1 is plastic and then preferably polyethylene for the connecting pipe 9. Such materials are easy to work with, have high strength, can be used over a very wide temperature range, and are also not very sensitive to various active ingredients.

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The structural examples show possible structural modifications of the tube reinforcement 1, in which connection it is to be understood that the present invention is not limited to the specifically described 5 structural modifications, but that various interconversions of individual structural modifications are possible and within the scope of the skilled artisan. The protection boundaries thus include all conceivable structural modifications that are possible by combining individual details 10 of the structural modifications shown and explained.

For the sake of clarity, it is further referred to that the tube armature, respectively, its components are shown in part on a non-scale and / or enlarged and / or reduced for a better understanding of the tube armature 1.

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The task based on individual inventive solutions will be clear from the description.

Above all, the individual figures in Figures 1, 2; 3; 4; 5; 6; The structures of the object of the invention shown in Figures 7, 8 may form unique solutions according to the invention. The related tasks and solutions according to the invention 20 are shown in the details of these figures.

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Reference Number Table 3 5 I Pipe Fitting 27 Longitudinal Center Shaft 5 2 Pipe 28 Fastener 3 Plastic Pipe 29 Overhang 4 Armature 40 30 Wall Thickness 5 Pipe Adapter 31 Flange Ring 10 6 Ring Adapter 32 Receiving Chamber 7 Passage Bore 33 Inner Diameter 35 34 Inlet Diameter 8 36 Stop surface II Sealing ring 37 Stop surface 12 O-ring 50 38 Level 13 End area 39 Arrow 14 Outer thread 40 Groove 20 15 End area 41 Flange 16 Flange 55 42 Housing 17 End surface 43 Slide housing 18 Tongue 44 Housing section cm 25 19 Flange 45 Drill collar io 20 End surface 60 46 Supply lead ir 21 Groove 47 Internal thread

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co 22 Inner diameter 48 Iron ring o 30 23 Outer diameter 49 Welding sleeve oo 24 Insertion depth 50 Gun point 25 End area 6 5 26 Edge end 12 51 Heating coil 52 Welding layer 53 Support sleeve 54 Arrow 5 55 Intersection 56 Arrow 57 Edge angle 58 Supporting groove 10 59 Sealing 61 63 Support device 64 End face 65 Undercut groove 66 Support ring δ

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Claims (27)

1. Pipe luminaire (1) for inextricably joining a pipe (2) with a luminaire (4), for example a pipe sleeve, a valve or slide housing, a coupling piece, etc. with a pipe adapter (5) and a ring adapter (6) which can be connected to the pipe adapter (5) and with a connecting pipe (9) located in the pipe adapter (5) and ring adapter (6) through which the pipe end (9) is placed, as with a tip end ( 26) extends over the ring adapter (6), and at least one sealing ring (11) located in a connection area (10) between the tube adapter (5) and the ring adapter (6), characterized in that the connecting tube (9) is in the connection area (10) between the tube adapter (5) and the ring adapter (6) are provided with a flange ring (31) which extends around the outer periphery of the connecting tube (9) and which is arranged in the tube adapter (5) and / or in the ring adapter (6) receiving chamber (32) receiving the flange ring (31) and sealing ring (11), and that the tube adapter (5) is connected to the ring adapter (6) with friction weld. 15 Pipe luminaire (1) according to claim 1, characterized in that the annular surface (37) of the connecting tube (9) directed towards the flange ring (31) forms an annular stop (36) with the flange ring (31) towards this directed annular stop surface (36). for the connecting pipe (9). 20 Pipe luminaire (1) according to claim 2, characterized in that the abutment surfaces <(36, 37) extend in a pane (38) perpendicular to the longitudinal center axis. Pipe luminaire (1) according to claim 2, characterized in that the abutment surfaces (36, 37) by means of cantilever surfaces of a truncated cone form an acute angle (57) in the range 150 ° 25-170 °. in CD cp Pipe luminaire (1) according to claim 1, characterized in that the pipe adapter (5) and ring adapter (6) are in flanged shape in the connection area (10). co CO CO o 30 6. A pipe fitting (1) according to claim 5, characterized in that the o and end surfaces ("0") which are opposite to each other form an annular circumferential locking device. A pipe fitting (1) according to claim 1, characterized in that the receiving chamber (32) is located in the ring adapter (6). 18 Pipe fitting (1) according to claim 1, characterized in that the height (35) of the flange ring (31) over the outer periphery of the connecting tube (9) is equal to or greater than the wall thickness (30) of the connecting tube 89. Pipe luminaire (1) according to claim 1 or 7, characterized in that the width of the receiving chamber (32) is slightly larger than the width of the flange ring. A pipe fitting (1) according to claim 1, characterized in that the sealing ring (11) is arranged on the connecting pipe (9) to circumferentially circumscribe the flange ring (31). A pipe fitting (1) according to claim 10, characterized in that the sealing ring (31) is formed by an O-ring. 15 Pipe luminaire (1) according to claim 10 or 11, characterized in that the periphery of the flange ring (31) is provided with a support ring (58) for the sealing ring (11) in this annular enclosing (31). 20 A pipe fitting (1) according to claim 1, characterized in that the connecting pipe (9) projects into the through bore (7) of the pipe adapter (5). Tube fitting (1) according to Claim 13, characterized in that the insertion depth (24) of the connecting tube (9) in the tube adapter (5) is limited by a free inner diameter (22) of the through bore (7) of the tube adapter (27) in the longitudinal center shaft (27). ) direction of protrusion projecting into CD cp body (28). A pipe fitting (1) according to claim 14, characterized in that the stop member (28) co is a stop ring (48). § 30 o 16. Pipe luminaire (1) according to claim 1, characterized in that on the outer periphery of the pipe adapter (5) there are formed abutment surfaces for a tool. 19 Pipe luminaire (1) according to claim 16, characterized in that a region of the outer periphery (5) of the tube adapter is polygon-shaped. A pipe fitting (1) according to claim 1, characterized in that an end portion (13) of the pipe adapter (5) is provided with an outer thread (14). A pipe fitting (1) according to claim 1, characterized in that an end portion (13) of the pipe adapter (5) is provided with an inner thread. 10 Pipe fitting (1) according to claim 1, characterized in that an end portion (13) of the tube adapter (5) is provided with a flange (41). A pipe fitting (1) according to claim 1, characterized in that a supporting sleeve (53) is placed in the connecting pipe (9). 15 Pipe luminaire (1) according to any of the preceding claims, characterized in that the end surface (61) of the tube adapter (5) directed towards the receiving chamber (32) of the ring adapter (32) is provided with a ring ring (62) extending from this protrusion. 20 A pipe fitting (1) according to claim 1, characterized in that a supporting device (63) for the pipe wall of the connecting pipe (9) is arranged between the flange ring (31) of the connecting pipe (9) and the ring adapter (6). Pipe luminaire (1) according to claim 23, characterized in that the support device (63) cm is constituted by a recess (65) and a recess (65) located on the end of the flange ring (31) opposite the receiving chamber (32). 65) cooperating support ring (66) on i. > - ring adapter (6). x tr CL £ 0 The pipe fitting (1) according to claim 1, characterized in that the pipe adapter (5) and the connecting pipe (9) and the ring adapter (6) are preferably of plastic. o o CM The pipe fitting (1) according to claim 25, characterized in that the connecting pipe (9) is preferably made of polyethylene. 20 Pipe luminaire (1) according to claim 1, characterized in that the pipe adapter is integrally formed with a luminaire, e.g. a slide housing, a pipe clamp, etc. δ (M i CD O h- · x and CL CO CO CO o CD O o {M