DE102016122161B3 - Pipe coupling, method for connecting two components and use of a pressure-sensitive adhesive portion for fixing at least one pipe end - Google Patents

Abstract

A pipe coupling comprising a sleeve for receiving at least one component and a closing device should be characterized in that the sleeve can be moved reversibly from an open state to a closed state, wherein the sleeve is adapted to receive the at least one component in the opened state wherein the cuff is arranged to fix the inserted at least one component in the closed state, wherein the closing device is adapted to be moved from a non-locking to a locking state, wherein the closing device is suitable, the cuff in the closed state reversible to lock, wherein the sleeve further comprises a pressure-sensitive adhesive portion which fixes the at least one component in the closed state.

Description

Technical area

The invention relates to a pipe coupling, a method for connecting two components and the use of a pressure-sensitive adhesive portion for fixing a pipe end according to the independent claims.

State of the art

Numerous pipe connections are known from the prior art which, for example, connect fluid-carrying pipes to one another. Known pipe connections can be divided into reversible or detachable and irreversible or non-detachable pipe connections. Furthermore, pipe joints are often distinguished as to whether they are designed for high or low pressures and / or for high or low temperatures. Furthermore, pipe connections can be distinguished with regard to the fluid to be conveyed, with regard to the field of application (for example, the pharmaceutical sector, foodstuffs sector or medical technology) and with regard to their materials (for example, stainless steel, plastics or the like).

From the US 2 417 741 A a ring coupling is known, which is preferably designed in two parts, wherein the coupling halves are fixed relative to one another via a hinge, a quick release or a screw connection.

From the US Pat. No. 3,229,998 is a two-piece pipe joint known whose components are determined by means of complementary locking elements.

From the DE 2 326 628 A are known split shells, which are glued together by means of a curable adhesive.

Known releasable socket joints and non-releasable press fitting connections are usually designed for low pressures and temperatures.

Known welds are not solvable, but suitable for high pressures.

Known screw and flange connections are solvable and suitable for high pressures.

One particular designed for high pressures screw is called the clamping wedge ring connection, which represents a further development of known cutting ring fittings. Clamping wedge ring connections include a clamping ring and a wedge ring. Clamping wedge ring connections are used in the DE 20 2015 105 642 U1 described. The clamping ring is spring-like deformable. Furthermore, it prevents torque from being transmitted from a nut to the wedge ring when tightening the screw connection. The wedge ring seals the fitting by pressing the fitting onto the pipe as it is tightened to create a constriction.

Clamping wedge ring connections are ideal for high pressures and harsh conditions. However, the wedge ring usually remains at a dismantling of the connection on the pipe end. In any case, when tightening the clamping wedge-ring connection creates a constriction and thus a mostly irreversible change in the pipe end. For this reason, the tube end after disassembly of the clamping wedge-ring connection often can not be readily used again for the preparation of a pipe joint. Furthermore, the wedge ring can usually not be deducted destructively from the pipe end, so that it must be replaced in order to use the clamp wedge ring screw again.

In particular, to connect two pipes with each other pipe couplings are also known. By means of pipe couplings, the pipe ends can be connected to each other without having to be flanged or welded or provided with a groove or a thread. Such pipe couplings comprise a sleeve, which surrounds the pipe ends to be connected, and a closing device for sealing.

A disadvantage of known pipe couplings that they are often expensive to install, often leave constrictions in the pipe ends and are often not designed for high pressures.

Object of the invention

The object of the present invention is to overcome the disadvantages of the prior art. In particular, a pipe coupling is to be provided which is reversibly fixable and easily detachable, protects a pipe surface and is designed for high pressures.

Solution of the task

To achieve the object, the features according to claim 1.

Advantageous embodiments are described in the subclaims.

According to one aspect of the present invention, a pressure-sensitive adhesive portion is used for fixing at least one component, in particular for fixing a pipe end and optionally another component in a pipe coupling.

Compared with known pipe connections, the pipe coupling according to the present invention offers numerous advantages. For example, depending on the design of the closing device described in more detail below, no or only little tool is required for mounting the pipe coupling, in particular, no special tool needs to be carried. This saves weight. Furthermore, the pipe coupling according to the invention can be disassembled non-destructively and used several times, so that no replacement parts need to be carried for re-assembly. A use of the inventive pipe coupling thus offers particular advantages when a weight mitzuführender transport goods should be kept as low as possible, for example, on ships, when pipes are to be connected to each other during the cruise.

Furthermore, the pipe coupling according to the invention has the advantage that it withstands high pressures, but at the same time does not cut the components, for example the pipe ends, and these maintain their integrity. In the context of the present invention, high pressures are understood as meaning nominal pressures of PN 63 and more according to EN 1333. The present invention is therefore suitable, for example, to connect components, in particular pipes, of a pipeline system in which nominal pressures of PN 63 and more according to EN 1333 prevail. Preferably, however, the present invention will be used in piping systems where nominal pressures of PN 25 according to EN 1333 or even lower nominal pressures prevail. So far, however, nominal pressures of PN 6, PN 10 and PN 16 were not readily manageable when pipe couplings for connecting two components, in particular two pipe ends were used.

To master larger nominal pressures, for example PN 25 and higher, correspondingly larger or more pressure-sensitive adhesive sections can be used.

In this case, a pipe end is preferably understood to mean an end section of a pipe. In the context of the present invention, a pipe which is fixed in the pipe coupling via its pipe end is preferably understood to mean an elongate hollow body whose length is greater than its diameter. A pipe end may also be attached to a fluid line or the like, which itself is not referred to as a pipe. Preferably, the pipe and in particular the pipe end are made of a rigid material, so that they can not deform and then release from the pipe coupling. However, this criterion can be fulfilled not only by rigid pipes and pipe ends, but also by hoses with a certain flexibility. A hose that can be fixed like a pipe in the pipe coupling and not or only slightly deformed in operation and therefore remains fixed in the pipe coupling, is also considered in the context of the present invention as a pipe. An associated hose end is to be regarded accordingly as a pipe end.

The terms "pipe" and "pipe end" are therefore preferably to be interpreted broadly in the context of the present invention.

An inventive pipe coupling comprises a sleeve for receiving at least one component and a closing device. The collar can be reversibly moved from an open state to a closed state. Further, the sleeve is adapted to receive the at least one component in the open state and to fix the recorded at least one component in the closed state. For this purpose, the sleeve can have a component-receiving section. The locking device is arranged to be reversibly moved from a locking to a non-locking state. By being moved to the blocking state, the closing device is also suitable for reversibly locking the collar in the closed state. The cuff further comprises a pressure-sensitive adhesive portion, which fixes the at least one component in the closed state and thus holds in the cuff.

Preferably, the pipe coupling serves to receive two components.

Preferably, at least one of the components is a pipe end of a pipe.

The pipe coupling according to the invention can be used, for example, to connect a pipe to a second component such as, for example, a thread or a threaded section with internal or external thread, a welding connection, a shank, a blanking plug or a second pipe or pipe end. It can be thought that the pipe coupling can accommodate both components reversible. Alternatively, the pipe coupling or one of its components, for example, the collar or the sealing ring, permanently, for example, cohesively, be connected to the second component.

If the pipe coupling takes on both components reversibly or if the connection is reversible, then the pipe coupling for this purpose can comprise at least two, for example four pressure-sensitive adhesive sections. Subsequent explanations, which relate only to a pressure-sensitive adhesive section, should apply analogously for two or more pressure-sensitive adhesive sections.

The pipe coupling preferably serves to receive at least one pipe. Since tubes usually have a circular cross-section, the sleeve is also configured in cross-section preferably substantially circular.

The cuff may be made of a metal, for example made of stainless steel, or of plastic. The cuff can also be made of a different material.

The cuff can be made in one piece or in several pieces. Preferably, the sleeve is made in one piece or two pieces. If the collar is made in one piece, it preferably has a section running parallel to an imaginary central longitudinal axis. In the case of the two-piece design, two such cuts are accordingly present.

A two-piece collar may consist of two, preferably half shell-shaped, sleeve parts and is moved to the open state by unfolding or otherwise moving the collar parts apart. The same applies to other multi-piece, for example, three-piece cuffs.

A one-piece sleeve is preferably opened at the intersection to get into the open state. Expediently, in this case, a folding mechanism is provided relative to the section or along a section which is offset by 180 ° with respect to the section in relation to the cross-sectionally circular collar along the cross-section. Thus, the cuff can be opened to get from the closed to the open state. The folding mechanism may be a portion running parallel to the cut with reduced material thickness or wall thickness and thus, for example, a film hinge. Further, it may also be contemplated that one or more other types of hinges provide the folding mechanism.

Furthermore, it can be thought that the folding mechanism is provided by a leg spring-like portion which is preferably parallel to the cut and opposite to the cut. The leg spring-like portion may in this case be biased so that it causes a movement in the open state. The torsion spring-like portion may also be biased to cause movement to the closed state. A bias that causes movement to the closed state may facilitate mounting of the collar. A bias that causes a movement in the open state, on the one hand point out that a ready for mounting collar has not yet been locked by means of the locking device and thus does not provide a seal. If the closing device is provided by a snap connection explained in more detail below, the leg spring-like section can counteract an unintentional opening of the snap connection.

Preferably, the locking device can be reversibly moved from the non-locking state to the locking state.

The locking device is preferably arranged to prevent the lock from being moved from the closed state to the opened state after the locking. Preferably, after unlocking the locking device is first necessary so that the sleeve can get back into the open state.

For each cut, the pipe coupling comprises at least one closing device. Preferably, the pipe coupling comprises two closing devices for each cut of the sleeve. However, a number of the locking devices may depend on the dimensions of the pipe coupling and the requirements placed on them.

The closing device or the closing devices can be designed in different ways.

First, it may be thought of a snap connection, for example in the form of a latching device. Furthermore, it can be thought of a screw. For example, the collar may comprise radially projecting tabs comprising bores for receiving a screw which is fixed with a nut. In addition, can be thought of buckles, clamping ring fasteners, straps or the like.

As already mentioned, the sleeve of the pipe coupling can be designed to receive two pipe ends in order to connect two pipes to be joined together. In such a case, the pipe coupling thus connects the pipe end of the pipe or of a first pipe to the pipe end of a second pipe.

According to one embodiment, the pipe coupling may comprise a sealing ring for receiving the at least one component. Preferably, the sealing ring serves to receive two components. The sealing ring can be permanently connected to the cuff. Preferably, however, the sealing ring is reversibly in a corresponding Sealing ring receiving portion of the sleeve inserted and can be removed from this reversible.

As already mentioned above, the pipe coupling can be permanently connected to the second component. This may be thought of instead to connect the sealing ring permanently with the second component instead of the sleeve.

The sealing ring can be made in one piece or in several pieces, for example in two pieces.

The pipe coupling can be mounted as follows: First, a first component, for example, the pipe end, connected to the sealing ring. This is preferably done by axial telescoping or pushing together of sealing ring and the first component or pipe end.

If the sealing ring is designed in two pieces, then first the first component or the pipe end and a first sealing ring half are connected to one another.

If the sealing ring is not permanently connected to the second component, then this is then connected to the sealing ring, as described above for the first component or the pipe end. If the sealing ring is designed in two pieces, then the second component is connected to a second sealing ring half.

The sealing ring or the sealing ring halves, in which or in which the component or the components are received, are inserted in the next step in the sleeve, which is for this purpose in the open state. The sleeve may comprise a sealing ring receiving portion and a component receiving portion for this purpose.

The cuff is then closed, i. consumed in the closed state. In order not to undesirably return to the open state, the sleeve is locked by means of the locking device and is thus ready for use or is in the position of use. For example, a fluid can be conducted into the second component via the first component, for example via the tube and its tube end, without it exiting at the tube coupling. The sealing ring is in this case preferably held positively in the sealing ring receiving portion, while the first component or the pipe end and the second component are fixed non-positively by the pressure-sensitive adhesive portion. It can therefore be thought that only a frictional connection between the pressure-sensitive adhesive portion and the component or the first component fixes this component in the cuff. The same can apply alternatively or in a complementary way for the second component.

Adhesive films equipped with pressure-sensitive adhesives and the like are known and frequently used, for example in adhesive tapes of all kinds, sticky notes and the like. Adhesive tapes, sticky notes and the like are pressed onto the surface to be bonded in order to achieve the adhesive effect or adhesive effect. The adhesive effect is mediated for example by van der Waals forces.

Adhesive tapes and the like usually comprise a carrier layer to which an adhesive is applied. Such an adhesive tape can be regarded as a two-layered adhesive tape comprising the carrier layer and an adhesive layer. The carrier layer may be made of paper, fabric or plastic, for example polypropylene or polyvinyl chloride. The adhesive may be made of polyacrylate, rubber or synthetic thermoplastic elastomers, polyorganosiloxane, or the like. The adhesive may additionally comprise a so-called tackifier, also called tackifier. Such tackifiers are known, for example, they may be resins.

According to an embodiment of the present invention, it is intended to make the pressure-sensitive adhesive portion the same as the above-described adhesive tape and the like, or the like.

Preferably, however, the pressure-sensitive adhesive portion is made of a material that is modeled on the gecko foot. Such a pressure-sensitive adhesive portion may also be referred to as a gecko-type adhesive portion. All embodiments of the present invention, which relate to pressure-sensitive adhesive portions always include gecko-like adhesive portions or should always apply to gecko-like adhesive portions.

Adhesive materials modeled on the gecko foot are superior to the above-described adhesive tapes and the like in many respects.

On the one hand, gecko-type adhesive sections adhere very strongly to a wide variety of surfaces. Gecko-type adhesive sections are known whose adhesive force of comparable size exceeds that of a sticky note by a factor of one hundred and more. In particular, by a pressure-sensitive adhesive portion is used with such a large adhesive or adhesive effect, it is possible to ensure a fixation of the at least one component only on the operating principle of the frictional connection. While the use of a gecko-type adhesive portion is preferred, in one aspect of the present invention quite generally thought that the at least one component is exclusively fixed non-positively by the pressure-sensitive adhesive portion in the cuff. The same applies to the second component, unless it is formed integrally with the sleeve or the sealing ring.

This is made possible by the use of pressure-sensitive adhesive sections with a high adhesion or adhesive effect, for example by the use of gecko-like adhesive sections. Thus, a completely non-destructive fixation of the tube can be done, in the surface of any cutting rings, wedge rings, hooks or similar retaining means engage or cut and without even that any elements deform the tube.

On the other hand, gecko-like adhesive sections can also be quickly and easily detached again, are reusable and have no or only a slight tendency to adhere to themselves and pollute.

Like adhesive tapes and the like, gecko-like adhesive portions usually comprise a carrier layer and at least one adhesive layer. The adhesive layer has hairs or bristles which are modeled on the so-called setae of the gecko foot and are therefore also called synthetic setae. Such gecko-like adhesive portions are commercially available. The adhesion is achieved by van der Waals forces and / or electrostatic forces and / or capillary forces. Often the adhesive effect is achieved by a combination of the three aforementioned forces.

Preferably, the pressure-sensitive adhesive portion is attached to an inner surface of the sleeve. If the pressure-sensitive adhesive section comprises a carrier layer, then this is expediently facing the inner surface or an inner surface of the sleeve, while the adhesive layer is oriented such that it can contact the at least one component to be inserted.

It may be thought that a flexible layer is disposed between the inner surface of the sleeve and the pressure-sensitive adhesive portion to compensate for tolerances. Alternatively or in a complementary manner, it may be thought that the carrier layer of the pressure-sensitive adhesive portion constitutes or comprises such a flexible layer.

If the flexible layer is not part of the carrier layer, it is preferably connected, on the one hand, to the inner surface of the sleeve and, on the other hand, to the pressure-sensitive adhesive section. By using the flexible layer, tolerances, i. Deviations from a nominal size, both of the at least one component, as well as the cuff are compensated. The pipe coupling can therefore also be used with components or pipes, which have greater tolerances and therefore, for example, are cheaper to manufacture. Furthermore, manufacturing costs of the sleeve can be reduced for the same reason, because larger tolerances or larger allowable or permissible deviations from the nominal size reduce the manufacturing costs of the sleeve.

As will be explained in more detail below with respect to the exemplary embodiments and figures, a dimension and an orientation or position of the pressure-sensitive adhesive section within the sleeve can influence both an adhesive force and a detachment force. By adhesive force is here understood that force which fixes the component and prevents it from sliding axially out of the sleeve. In this case, the term "release force" refers to that force which, for example, a user has to apply in order to remove the tube from the cuff in order to disassemble the pipe coupling.

• - Einlegen der Bauteile in eine Manschette einer Rohrkupplung umfassend einen drucksensitiven Klebeabschnitt,
• - Schliessen der Manschette,
• - Verriegeln der Manschette mit Hilfe einer Schliesseinrichtung.

The present invention further relates to a method for connecting two components, for example for connecting a pipe end to a second component such as a thread, a welding connection, a shaft, a blind plug or a second pipe end, comprising the following steps:

• Inserting the components into a sleeve of a pipe coupling comprising a pressure-sensitive adhesive section,
• - closing the cuff,
• - Locking the cuff with the aid of a locking device.

If at least one of the components is a pipe, then this can still be cut before insertion.

Before inserting the components, these can also be fitted with a sealing ring, which is inserted together with the components in the sleeve. The insertion of the components is thus carried out with attached sealing ring.

Although the use of the sealing ring is preferred, it can also be thought that the components are inserted and fixed without sealing ring in the pipe coupling. After closing and locking the sleeve, the pipe coupling alone can already provide sufficient tightness.

In the above method, all the modifications described with respect to the pipe coupling can be made and all For example, a two-piece sealing ring can be used.

list of figures

• 1a eine geschnittene Seitenansicht einer Rohrkupplung gemäss einem ersten Ausführungsbeispiel der vorliegenden Erfindung mit eingelegtem Rohr 7;
• 1b eine geschnittene Seitenansicht einer Rohrkupplung gemäss einem zweiten Ausführungsbeispiel der vorliegenden Erfindung;
• 2a eine um 90° gedrehte Ansicht der Rohrkupplung nach 1a;
• 2b eine um 90° gedrehte Ansicht der Rohrkupplung nach 1b;
• 3 eine teilgeschnittene Ansicht einer Rohrkupplung mit zwei drucksensitiven Klebeabschnitten 5;
• 4 eine einstückige Manschette 1;
• 5 eine zweistückige Manschette 2;
• 6 bis 8 zweistückige Manschetten 2 mit verschiedenen Schliesseinrichtungen 3;
• 9 bis 11 teilweise geschnittene Ansichten von Rohrkupplungen mit verschiedenen ausgestalteten Bünden 4;
• 12 eine Seitenansicht einer Rohrkupplung mit geschlossener Manschette 16, 17;
• 13 einen geschnittene Teilansicht einer Rohrkupplung;
• 14 eine Ansicht gemäss 13 ohne flexible Schicht 19;
• 15 ein Ensemble aus einstückigem Dichtring 6 und Rohr 7;
• 16 ein Ensemble aus zweistückigem Dichtring 21 und Rohr 7;
• 17 bis 19 jeweils verschiedene einstückige Dichtringe 6 welche mit einem Rohr 7 verbunden sind;
• 20 ein Rohr 7 und einen einstückigen Dichtring 6 vor und nach einem Ineinanderschieben;
• 21 eine ineinandergeschobene Einheit aus Rohr 7 und einstückigem Dichtring 6 gemäss 20 vor und nach einem Einlegen in eine zweistückige Manschette 2, 16, 17;
• 22 eine teilweise geschnittene Seitenansicht eine Rohrkupplung;
• 23 einen stark vergrösserten Ausschnitt eines Gecko-artigen Klebeabschnitts;
• 24 eine teilgeschnittene Ansicht einer Rohrkupplung, wobei sich eine Anordnung bzw. Orientierung der drucksensitiven Klebeabschnitte 5 von derjenigen in 3 unterscheidet;
• 25 eine Anordnung nach 3 oder 24, nachdem die Manschette 1 mit eingelegtem Rohr 7 geschlossen und erneut geöffnet wurde und
• 26 eine teilgeschnittene Ansicht einer Rohrkupplung mit vier drucksensitiven Klebeabschnitten 5.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings; these show in:

• 1a a sectional side view of a pipe coupling according to a first embodiment of the present invention with inserted tube 7;
• 1b a sectional side view of a pipe coupling according to a second embodiment of the present invention;
• 2a a rotated by 90 ° view of the pipe coupling after 1a ;
• 2 B a rotated by 90 ° view of the pipe coupling after 1b ;
• 3 a partially sectioned view of a pipe coupling with two pressure-sensitive adhesive portions 5;
• 4 a one-piece sleeve 1;
• 5 a two-piece cuff 2;
• 6 to 8th two-piece cuffs 2 with different closing devices 3;
• 9 to 11 partially sectioned views of pipe couplings with different configured collars 4;
• 12 a side view of a pipe coupling with closed sleeve 16, 17;
• 13 a sectional partial view of a pipe coupling;
• 14 a view according to 13 without flexible layer 19;
• 15 an ensemble of integral sealing ring 6 and pipe 7;
• 16 an ensemble of two-piece sealing ring 21 and tube 7;
• 17 to 19 each different one-piece sealing rings 6 which are connected to a pipe 7;
• 20 a tube 7 and a one-piece sealing ring 6 before and after telescoping;
• 21 a nested unit of tube 7 and one-piece sealing ring 6 according 20 before and after insertion into a two-piece sleeve 2, 16, 17;
• 22 a partially sectioned side view of a pipe coupling;
• 23 a greatly enlarged section of a gecko-type adhesive portion;
• 24 a partially sectional view of a pipe coupling, wherein an arrangement or orientation of the pressure-sensitive adhesive portions 5 of those in 3 different;
• 25 an arrangement after 3 or 24 After the sleeve 1 is closed with inserted tube 7 and reopened and
• 26 a partially sectioned view of a pipe coupling with four pressure-sensitive adhesive portions. 5

embodiments

In 1a is a sectional view of a pipe coupling shown. The one-piece sealing ring 6 connected pipe 7 is in one of a one piece cuff 1 enclosed space. The one-piece cuff 1 comprises a first cuff part 16 and a second cuff part 17 , Further, an O-ring 8 and two pressure-sensitive adhesive portions 5 indicated.

Instead of an O-ring 8 could in the embodiment of 1a and 1b and also in all other embodiments, a groove ring can be used.

In the 1b shown pipe coupling differs from that according to 1a only in terms of their length and in terms of the design of the sealing ring 6 , While the sealing ring 6 the in 1a shaped pipe coupling is shaped like a lying eight, is the one according to 1b bulbous, so has the largest cross section in the middle.

2a shows a side view of the rotated 90 ° pipe coupling after 1a , The folding mechanism 10 can be seen. On the presentation of the locking device 3 was omitted for the sake of clarity.

2 B shows a corresponding side view 1b ,

3 shows a partially sectional view of a pipe coupling before closing with open cuff 1 , In the 3 shown pipe coupling corresponds substantially to that according to 1a , however, has only the first part of the cuff 16 via pressure-sensitive adhesive sections 5 , In addition to the already in 1a In particular, two pressure-sensitive adhesive sections are shown 5 such as a sealing ring receiving section 22 recognizable. Furthermore, on both sides in each case a semi-circular in cross-section component-receiving portion 33 recognizable, each of sections of both parts of the collar 16 . 17 is formed.

In 4 is a one-piece cuff 1 shown. The indicated folding mechanism 10 and the cut 9 separate the first part of the cuff 16 from the second cuff part 17 ,

In 5 is a two-piece cuff 2 shown. This includes two cuts 9 which the first cuff part 16 and the second cuff part 17 separate. There are also two locking devices 3 recognizable.

In the 6 to 8th is a two-piece cuff 2 shown. The two-piece cuffs 2 differ only with regard to the locking devices 3 ,

In 6 is a side cross-section of a two-piece cuff 2 shown, which on both sides each have two locking devices 3 of which only one can be recognized due to the drawing. The locking devices 3 each comprise a spring element 11 and an undercut 12 ,

In 7 is a side view of a two-piece cuff 2 shown. The closing mechanism 3 each includes a tab 13 , a screw 14 as well as a mother 15 ,

In 8th is a side cross-section of a two-piece cuff 2 shown. The closing mechanism 3 includes a tension lock 18 ,

The 9 to 11 each show a partially sectioned view of a pipe coupling. The individual pipe couplings differ in the design and dimensions of a federal 4 of the respective one-piece sealing ring 6 , Under the covenant 4 This is a section of the one-piece sealing ring 6 understood, which in use position has a greater extent than the pipe connected to it 7 ,

The Bund 4 the one-piece sealing ring 6 in 9 is trapezoidal, the in 10 recognizable illustrated fret 4 is triangular and the in 11 illustrated covenant 4 is circular arc.

12 shows a side view of a pipe coupling. The marked area corresponds to the 13 and 14 ,

In the 13 and 14 in each case a section of an embodiment of a pipe coupling is shown. In both figures is a section of the first cuff part 16 , the pressure-sensitive adhesive section 5 and a fastening layer 20 to recognize.

In contrast to the pipe coupling according to 14 has the one according to 13 over a flexible layer 19 between the attachment layer 20 and the pressure-sensitive adhesive portion 5 ,

15 shows a sectional view of an integral sealing ring 6 that with a pipe 7 connected is. The O-ring 8 of the one-piece sealing ring 6 is recognizable.

In contrast to 15 show the 16 a corresponding representation of a two-piece sealing ring 21 also with a tube 7 connected is. Both sealing ring halves 21.1, 21.2 each have an O-ring 8. The 17 to 19 each show a one-piece sealing ring 6 , which with a pipe 7 connected is. The one-piece sealing rings 6 differ on the one hand in terms of dimensions and design of the federal government 4 on the other hand regarding a position of the O-ring 8. In 17 the O-ring 8 is arranged axially sealing, in 18 radially inner sealing and in 19 radially outer sealing.

The in the 17 to 19 shown combinations of federal government 4 and location of the O-ring 8 can also be varied.

The 20 and 21 shows how the pipe coupling can be mounted. 20 shows a pipe 7 and a one-piece sealing ring 6 before (left side) and after nesting (right side). 21 shows a telescoped unit made of pipe 7 and one-piece sealing ring 6 according to 20 in front of (left side) and after insertion (right side) in a two-piece cuff 2 ,

22 shows a partially sectioned side view of a pipe coupling in the use position with inserted pipe 7 , In addition to the already explained with regard to the preceding figures details is a circular ring surface 26 of the pipe 7 shown.

23 shows a greatly enlarged view of a gecko-type adhesive portion 5 , Here are two adhesive elements 27 , the attachment layer 20 , a pipe surface 28 as well as two contact surfaces 29 recognizable.

The pipe coupling according to 24 differs from the one according to 3 merely with regard to the dimensions and orientations of the pressure-sensitive adhesive sections 5 ,

The pipe coupling according to 25 shows the arrangement after 3 after the cuff 1 with inserted tube 7 closed and reopened.

The pipe coupling according to 26 is essentially the same as that 3 However, it has four instead of just two pressure-sensitive adhesive sections 5 , In contrast to the pipe coupling according to 3 includes the one according to 26 in both cuff parts 16 . 17 pressure-sensitive adhesive sections 5 ,

Referring to the 1 to 26 explains the operation of the inventive pipe coupling as follows:

The 1a and 1b each show a pipe coupling in the ready state or in the position of use. It was only the pipe end of the pipe 7 represented as the first component. For clarity, the right was in the 1a and 1b omitted the representation of a second component, such as a thread, a welding connection, a shaft, a dummy plug or a second tube.

Such as from the 1a and 1b is apparent, is preferably only the pipe end, ie, a terminal portion of the tube 7 , fixed in the pipe coupling.

If from a fixation of the pipe 7 the speech is, it is usually thought that only the pipe end is fixed.

In order to mount the pipe coupling or to put into operation, first pipe 7 and sealing ring 6 . 21 connected with each other. Such as from a comparison of 15 and 20 shows, this is only the one-piece sealing ring 6 along an arrow 31 axially on the pipe 7 or pushed onto the pipe end.

In an arrangement according to 16 Accordingly, a first sealing ring half 21.1 of a two-piece sealing ring 21 on the pipe 7 or pushed onto the pipe end.

Regarding the 17 to 19 It should be noted that it is irrelevant for the assembly, whether after telescoping or pushing the one-piece sealing ring 6 the pipe 7 encompasses or vice versa.

Regarding the 15 to 19 It should be noted that the sealing ring 6 . 21 can be adapted to given requirements. For example, the position of the sealing O-ring 8 or the O-rings 8 and / or the dimension and design of the federal government 4 be adjusted.

Optionally, in the same way as above for the tube 7 explains, for example, a non-illustrated welding connection, a thread, not shown, a shaft, not shown, a dummy plug, not shown or a second pipe not shown by sliding or telescoping with the integral sealing ring 6 or the second sealing ring half 21.2 are connected. Regarding an arrangement, as in the 15 to 20 is shown, the second component would from the right into the sealing ring 6 . 21 pushed in or pushed this.

In the next step, the ensemble will include the sealing ring 6 . 21 , the pipe 7 and optionally the second component, which is opposite the pipe 7 in the sealing ring 6 . 21 pushed or pushed onto this, in the cuff 1 . 2 inserted. Preferably, the tube 7 and possibly the second component inserted such that the tube 7 and the second component, not shown, in a component receiving section 33 come to rest while the sealing ring in a sealing ring receiving section 22 comes to rest.

It does not matter if the ensemble is a two-piece cuff 2 as in 21 or a one-piece cuff 1 like in the 3 . 24 . 25 and 26 includes.

Will be a two-piece sealing ring 21 used, so may be connected to the first sealing ring half 21.1 pipe 7 or the corresponding pipe end mounted radially, in particular radially in the sleeve 1 . 2 be inserted. Furthermore, the tube connected to the first sealing ring half 21.1 7 or the pipe end mounted independently of the second component connected to the second sealing ring half 21.2 or in the cuff 1 . 2 be inserted.

A one-piece cuff 1 is by moving along an arrow 23 in the 2a and 2 B opened and closed by a movement in the opposite direction.

Such as in 3 shown, can be thought of the ensemble of sealing ring 6 and pipe 7 in the second cuff part 17 or in general in that cuff part 16 . 17 which does not use pressure-sensitive adhesive sections 5 Is provided. Thus, for example, a position of the tube 7 be corrected after insertion. Compared to the embodiment according to 3 it is according to an embodiment according to 26 irrelevant, in which cuff portion 16 . 17 the ensemble of sealing ring 6 and pipe 7 is inserted because four pressure-sensitive adhesive sections 5 available.

The embodiment according to 26 with four pressure-sensitive adhesive sections 5 It can be compared to the embodiment according to 3 allow the pipe 7 better to fix. Otherwise applies to all embodiments shown in the figures that a statement about a pressure-sensitive adhesive 5 always analogous to a plurality of pressure-sensitive adhesive sections 5 applies.

The cuff 1 . 2 is then closed and both cuff parts 16 . 17 be squeezed to the pipe 7 inside the cuff 1 . 2 to fix.

For this purpose, one in each case in the direction of an arrow 24 Acting force ( 21 ) or one in the opposite direction of the arrow 23 Acting force ( 2 ) on the cuff parts 16 . 17 applied. This force presses the pressure-sensitive adhesive section 5 on the pipe 7 and optionally on the second component. Due to the adhesive effect between the pressure-sensitive adhesive section 5 and the tube 7 and optionally the second component both are fixed in the pipe coupling.

Subsequently, the closing devices 3 brought into the blocking state to the cuff 1 . 2 This can be the one-piece cuff 1 or the two-piece cuff 2 with every locking device 3 interact, for example with the in the 6 to 8th Locking devices shown 11 . 12 . 13 . 14 . 15 . 18 , A selection of the locking device 3 , a selection of a number of locking devices to use 3 as well as a selection of it or its size can be adapted to the requirements and the purpose of use.

After using the locking device 3 was locked, the pipe coupling is ready for use. The pressure-sensitive adhesive section 5 or the pressure-sensitive adhesive sections 5 fix or fix the tube 7 and optionally via the sealing ring 6 . 21 with the pipe 7 connected second component with the cuff 1 . 2 such that a fluid, for example a gas or a liquid, from the tube 7 can flow into the second component or in the opposite direction. Even if the fluid flows at high pressure, the pipe coupling remains intact, especially the pipe remain 7 and the second component fixed. The fluid passes through the pipe coupling without leaking. Like from the 1a . 1b . 2 . 9 . 10 . 11 . 22 . 24 and 25 shows, the sealing ring 6 . 21 in the position of use by a positive connection in the cuff 1 . 2 fixed or held. The pipe 7 and optionally the opposite mounted second component, however, be replaced by a frictional connection in the cuff 1 . 2 fixed, which through the pressure-sensitive adhesive portion 5 or the pressure-sensitive adhesive sections 5 provided.

Like from the 1a . 1b . 3 . 13 . 14 . 22 . 24 . 25 and 26 combined with 23 is apparent, the pressure-sensitive adhesive portion 5 via a fixing layer 20 with a surface of the cuff 1 . 2 connected or attached to this. Putting a force along an arrow 30 ( 23 ), for example by compressing the sleeve parts 16 . 17 , becomes the pressure-sensitive adhesive portion 5 on the tube surface 28 pressed and unfolds its adhesive effect. The exercise of a force along the arrow 30 in 23 can by exercising a force along the arrow 24 in 21 be effected.

The same applies to the shaft, the welded connection, the thread, the blind plug, the second tube or the like.

Between the pipe surface 28 and the adhesive elements 27 the pressure-sensitive adhesive portion 5 forms a contact surface 29 from which adhesive forces, for example van der Waals forces, between the pressure-sensitive adhesive section 5 or the adhesive elements 27 and the tube surface 28 Act. This is in 23 for the gecko-type pressure-sensitive adhesive section shown there 5 shown. The same applies not only to the pipe surface 28 but also for example for the surface of the shank or of a second component.

To compensate for tolerances, a flexible layer 19 be provided as in 13 shown. This can be both a separate flexible layer 19 as well as one in the pressure-sensitive adhesive section 5 integrated flexible layer 19 act. The flexible layer 19 can in the attachment layer 20 and / or be integrated in a carrier layer, not shown. The carrier layer and the flexible layer 19 are in 23 not shown. However, it may be thought of the carrier layer and the flexible layer 19 between the adhesive elements 27 and the attachment layer 20 to arrange.

It can be thought of only in one of the cuff parts 16 . 17 one or more pressure-sensitive adhesive sections 5 to arrange, such as in the 3 . 24 and 25 shown. If this is the case, alternative or complementary to the in 13 shown arrangement, the flexible layer 19 in the cuff part 16 . 17 to arrange, which does not have a pressure-sensitive adhesive portion 5 features. Is the flexible one layer 19 only in that part of the cuff 16 . 17 arranged, which does not have a pressure-sensitive adhesive portion 5 has, so can the cuff 1 . 2 easier and therefore cheaper to manufacture, because the flexible layer 19 only with a cuff part 16 . 17 but not with the pressure-sensitive adhesive section 5 and a cuff part 16 . 17 must be connected. A complex production and connection multiple layers is eliminated.

On the other hand, the pressure-sensitive adhesive portion 5 factory with an integrated flexible layer 19 equipped, so this too can make the cuff 1 . 2 simplify, because the pressure-sensitive adhesive section 5 and the flexible layer 19 in one step with the cuff part 16 . 17 get connected.

As indicated above, this may also be thought of in both parts of the boot 16 . 17 a flexible layer 19 to arrange. For example, a cuff part 16 via a flexible layer and the other cuff part 17 over a flexible layer 19 and via a pressure-sensitive adhesive section 5 feature.

According to an alternative embodiment, it can also be thought of both cuff parts 16 . 17 each with at least one pressure-sensitive adhesive portion 5 and optionally with a flexible layer 19 equip. Such an embodiment is in 26 shown.

At the in 26 Thus, illustrated embodiment, either only the pressure-sensitive adhesive portions 5 one of the cuff parts 16 . 17 or all pressure-sensitive adhesive sections 5 be equipped with a flexible layer.

The pressure-sensitive adhesive section 5 Preferably, in all embodiments of the present invention, it is designed to be the tube 7 fixed during operation of the pipe coupling with a force which one on the annular surface 26 of the pipe in the direction of an arrow 25 exceeds acting force. The same applies to a circular ring surface 26 or the like of the stem, thread, weld joint, blanking plug, second tube, or generally the second member, which preferably faces the tube 7 in the sealing ring 6 . 21 is fixed. The same consideration applies of course to the attachment layer 20 which the pressure-sensitive adhesive portion 5 with the cuff part 16 . 17 combines. Also this attachment layer 20 is preferably designed so that it is on the annular surface 26 in the direction of the arrow 25 acting force withstand and the pressure-sensitive adhesive portion 5 not from the cuff part 16 . 17 solves.

In the operating position, the O-ring 8 or the O-rings 8 seal the pipe coupling from the environment in a fluid-tight manner.

While the pressure-sensitive adhesive section 5 preferably permanently over the attachment layer 20 with the cuff part 16 . 17 may alternatively be thought of, the pressure-sensitive adhesive portion 5 reversible with the cuff part 16 . 17 connect to. For example, the pressure-sensitive adhesive portion 5 be executed as double-sided Gecko-like adhesive portion, so that instead of the attachment layer 20 Gecko-like adhesive elements 27 for attachment to the sleeve part 16 . 17 available. The pressure-sensitive adhesive section 5 In this case, it can also be mounted on the pipe first 7 and / or the second component, which then in the cuff 1 . 2 is inserted. Furthermore, in this case, the same cuff 1 . 2 for a variety of pipes 7 and components are used, for example, for pipes 7 with different manufacturing tolerances, which on the selection of the reversible to be attached pressure-sensitive adhesive portion 5 be compensated.

One between the pipe 7 or the tube surface 28 and the pressure-sensitive adhesive portion 5 acting adhesive force depends not only on a condition, but also on the dimensions and, where appropriate, the position or orientation of the pressure-sensitive adhesive portion 5 from. Therefore, over a selection of the size and / or the orientation of the pressure-sensitive adhesive portion 5 the adhesive force can be influenced.

In the 24 shown pressure-sensitive adhesive sections 5 differ from those according to 3 both in size and orientation. The adhesive force in the position of use depends exclusively on the size of the pressure-sensitive adhesive portion 5 off, so will the tube 7 and optionally a (not shown) second component of a pipe coupling according to 24 fixed with a lower adhesive force than that in 3 the case is. About the selection of the size and optionally the orientation or position of the pressure-sensitive adhesive portion 5 can thus be used when fixing the tube 7 and optionally the second component acting adhesive force can be adjusted.

In particular, when disassembling the pipe coupling, the orientation or position of the pressure-sensitive adhesive portions or 5 to be relevant. For numerous pressure-sensitive adhesive sections 5 For example, in gecko-like adhesive sections 5 , a force with which two interconnected surfaces adhere to each other and which must be overcome in order to separate these surfaces depends on which direction the disassembly or detachment takes place.

Two adhering to each other with a certain adhesion surfaces, which by a gecko-like adhesive portion 5 can therefore be resisted, for example, a parallel displacement, while an inclination of the surfaces to each other quickly overcomes the adhesive force. This consideration also applies to the inner surface of the sleeve and the tube surface 28 of the present invention.

Differences in position and orientation of pressure-sensitive adhesive sections 5 of the same size, such as in 24 Therefore, despite identical dimensions, a different separation behavior can result. For example, peeling off can be easier by turning the tube 7 in the direction of an arrow 32 take place. Depending on the orientation of the pressure-sensitive adhesive section 5 but instead of such a rotation of the tube about its longitudinal axis and angling of the tube 7 , ie an inclination of the longitudinal axis, facilitate the detachment.

Advantageous on gecko-like adhesive sections 5 is that its adhesive force by angling or turning the tube 7 can be overcome in a simple manner, while still in the position of use of an axial displacement of the tube 7 from the cuff 1 . 2 resist out.

In all embodiments of the present invention, in particular those according to one of 1a to 3 . 9 to 14 . 21 . 22 . 24 . 25 and 26 , can use various pressure-sensitive adhesive sections 5 be used. In particular, can gecko-like adhesive sections 5 be thought of.

LIST OF REFERENCE NUMBERS

1

One-piece cuff

2

Two-piece cuff

3

locking device

4

Federation

5

Pressure-sensitive adhesive section

6

One-piece sealing ring

7

pipe

8th

O-ring

9

cut

10

folding mechanism

11

spring element

12

undercut

13

flap

14

screw

15

mother

16

First cuff part

17

Second cuff part

18

Lever Release

19

Flexible layer

20

attachment layer

21

Two-piece sealing ring

22

Seal receiving portion

23

arrow

24

arrow

25

arrow

26

Annular surface

27

adhesive element

28

pipe surface

29

contact area

30

arrow

31

arrow

32

arrow

33

Component-receiving portion

Claims (10)

Pipe coupling comprising a collar (1, 2) for receiving at least one component and a closing device (3), characterized in that the collar (1, 2) can be reversibly moved from an open state to a closed state, wherein the collar ( 1, 2) is arranged to receive the at least one component in the open state, wherein the collar (1, 2) is arranged to fix the inserted at least one component in the closed state, wherein the locking device (3) is arranged to the locking device (3) is adapted to reversibly lock the cuff (1, 2) in the closed state, the cuff (1, 2) further comprising a pressure-sensitive adhesive portion (5) to be moved from a non-locking to a locking state comprises, which reversibly fixes the at least one component in the closed state. Pipe coupling after Claim 1 wherein the sleeve (1, 2) is adapted to receive two pipe ends to connect two pipes (7) to be joined together. Pipe coupling according to one of the preceding claims, characterized in that only a frictional connection between the pressure-sensitive adhesive portion (5) and the component fixes the component in the sleeve (1, 2). Pipe coupling according to at least one of the preceding claims, characterized in that the pressure-sensitive adhesive portion (5) is made of a material which is modeled on the gecko foot. Pipe coupling according to one of the preceding claims, characterized by a sealing ring (6, 21) for receiving the at least one component. Pipe coupling after Claim 5 , characterized by a sealing ring receiving portion (22), in which the sealing ring (6, 21) reversibly inserted and from which the sealing ring (6, 21) can be removed reversibly. Pipe coupling according to at least one of the preceding claims, characterized in that the pressure-sensitive adhesive portion (5) on an inner surface of the sleeve (1, 2) is attached. Pipe coupling according to at least one of the preceding claims, characterized in that between the inner surface of the sleeve (1, 2) and the pressure-sensitive adhesive portion (5) a flexible layer (19) is arranged to compensate for tolerances. Use of a pressure-sensitive adhesive section (5) for reversibly fixing at least one pipe end in a pipe coupling. Method for connecting two components, for example for the reversible connection of a pipe end with a component such as a thread, a welding connection a shaft, a blind plug or a second pipe end, characterized by - placing the components in a sleeve (1, 2) of a pipe coupling comprising a pressure-sensitive adhesive portion (5), - closing the sleeve (1, 2), - locking the sleeve (1, 2) by means of a locking device (3).

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