DE202010000135U1 - Connection for a corrugated hose - Google Patents

Abstract

Connection for a corrugated hose, with at least one end of parallel corrugated wall profiles, in which the end of the corrugated hose is received by a hole in a component surrounding it, a sealing element is arranged in a terminal corrugation trough of the corrugated tube or corrugated hose, in a trough behind it a dimensionally stable ring and a fastening component is arranged behind the latter, the dimensionally stable ring being fixed between them by fastening it to the component forming the bore.

Description

The invention relates to a connection connection for corrugated pipes or corrugated hoses. In particular, it relates to a connection which causes no change in the corrugated tube or corrugated tube in the preparation of the compound and at the same time repeatedly connected and can be solved again.

It is known that connections of corrugated pipes or corrugated hose with each other or with other units are difficult to produce because of the wave profile. In piping known fasteners separate from the outset.

It has therefore been attempted to produce the usability of conventional connecting elements in that in each case specially shaped connection components are arranged at the corrugated tube or corrugated tube ends, with which connection then a connection can be made using known components. The connection components are firmly connected to the corrugated pipes or hoses usually by welding or soldering, sometimes also by means of clamping or pressing connections. Corresponding proposals are in FR 2 542 845 A1 . DE 195 16 147 A1 . EP 0 939 265 A2 and WO 2006/136151 A1 contain.

If connection connections are created using special connection components, considerable material and financial expense is incurred. The additional connection components lead to an increase in weight of line systems produced therewith, as a result of which their usability in lightweight construction is limited and the essential advantage of corrugated pipes or hoses is in some cases nullified.

Another way to connect corrugated pipes or hoses was found in that the terminal wave crest is deformed by compression with simultaneous increase in diameter to a terminal flange, which then optionally with the enclosed sealants allows the production of a tight connection connection. This solution is in DE 93 20 431 U1 described.

However, equivalent connections in which the terminal flange is not formed until the terminal connection is made are shown in FIG US 2,363,586 . US 3,008,738 and EP 0 801 258 A2 contain.

A method for the production of terminal sealing flanges on a formed by stretching the corrugated tube or hose cylindrical end piece is in EP 0 557 594 B1 described.

In the case of connection connections with a compressed end flange, it is disadvantageous that connections with enclosed sealing elements (flat gaskets) may not be used, in part due to normative specifications. The necessary compression of the terminal wave mountain also carries a risk that before the compression aufzuschiebende components, such as union nuts, can also be forgotten, making the executed compression is unusable.

In connection connections that generate the compression only in the production of the compound, there is again an increased risk of incorrect connections. It is not excluded that in the production of such compounds an impermissible displacement of the corrugated hose or the upsetting elements occurs, so that the connection connection either can not be tight at all or the required parameters are not permanently achieved.

It is already known to keep corrugated pipes or hoses in receiving sleeves by formhinterschneidende elements (claws, knobs, threads and the like.). Such connection connections, which are usually used in vacuum cleaner hoses and similar applications, are not sufficiently dense from the outset, since there is no tightness requirement in such applications.

It is known that such compounds can be additionally sealed by additionally introduced sealing elements or by sealing compounds.

So is in AT 502 404 B1 proposed to use a conventional round ring.

However, round rings are not intended for use with corrugated pipes or hoses, which is why from standardized assortments only a selection can be made, which then either do not fill the volume of a wave trough, can only be used overstretched or deformed inadmissible after production of the connection.

After a proposal in DE 10 2008 050 073 A1 Such a compound can be fixed in a sleeve by a pinning or a potting compound, with respect to the further embodiment of the sleeve is complete freedom. Therefore, on the side facing away from the connection connection known connection types can also be performed from the pipeline construction.

This connection in turn has the disadvantage that Weltschlauchende and sleeve can not be separated again after their production.

However, there is also a need for connection connections that are produced without changes to the profile of a corrugated tube or hose and with the help of a seal by elastic sealing elements and on the other hand also have to be disassembled again at any time. In particular, there is also the need to be able to reuse the corrugated pipes or hoses, the fastening means and the sealing elements after disassembly, if necessary.

It is therefore an object of the invention to provide a re-releasable connection connection, which can be generated without changing the profile of a corrugated tube using elastic sealants, at the same time easily and without increased qualification requirements executable and further safe and inexpensive.

This above object is achieved by a connection with the features of the protection claim 1. Secondary and downstream protection claims relate to further embodiments of the protection claimed in claim 1 invention and do not limit its scope.

In the following description, the embodiments and the claims, the terms used are used with the following meaning:
Corrugated hose - is a longitudinally extending tubular structure whose wall has at least in some areas and at least at the ends of a transversely or obliquely extending rib profile. Conceptually included are corrugated pipes with a greater flexural rigidity.

Corrugated tube end - is the respective end portion of a corrugated tube, which has at least two spaced apart troughs.

Sealing element - is an elastic component that is suitable to fill existing troughs largely and to produce tightness between a corrugated hose and a receiving bore.

Mounting hole - is a hole that is part of a pipe circuit and is suitable for receiving a Wellschlauchendes.

Dimensionally stable ring - is a non-deformable in use ring, which preferably consists of a dimensionally stable under load material.

Fastening component - is any component that is suitable for attaching a corrugated hose end to a connection point. In particular, union nuts, flanges and sleeves are included.

A receiving bore-containing component - is any component which has at least one receiving bore, which belongs to a conduit system, and at least has means for producing a fixed connection with a corresponding fastening component. Enclosed are both screw-in as well as receiving bores having body, such as valve blocks.

According to the invention, a connection connection for a corrugated hose having at least one end present parallel corrugated wall profiles is achieved in that a fastening component is pushed onto the Wellschlauchende. This is followed by the postponement of a dimensionally stable ring on the corrugated hose end, wherein this ring is initially deformed by spreading so far that its inner diameter is greater than the outer diameter of the Wellschlauchendes. In the second or another, arranged behind it, wave trough of the parallel corrugated wall profile of the dimensionally stable ring is inserted, wherein it is optionally compressed depending on whether it has been elastically or plastically deformed. By placing it in a wave trough of the corrugated hose end, the dimensionally stable ring receives a fixed axial position on the corrugated hose end.

At least in the terminal trough a sealing element is inserted.

The Wellschlauchende prepared in this way is then inserted into a bore in a component surrounding the bore until the dimensionally stable ring rests against an outer side of the surrounding component. In this position, the fastening component is then connected to the component surrounding the bore of the shape that the dimensionally stable ring is clamped between them and in this way the corrugated hose end is axially fixed.

The sealing element arranged in the terminal trough seals the outside of the corrugated tube end with respect to the bore, so that the tightness of this connection is established.

The dimensionally stable ring is a ring open on one side, which can be expanded or closed either by deformation or by elastic deformation.

An advantageous embodiment of the dimensionally stable ring is that this in its periphery has at least one constriction on which concentrates the entire deformation work during the expansion and closing process, while the ring retains its original shape otherwise.

Furthermore, the dimensionally stable ring may have a rectangular, trapezoidal, semicircular or adapted to the profile of the wave trough cross-section. The outer diameter of the dimensionally stable ring in the closed state is in any case greater than the outer diameter of the Wellschlauchendes.

Instead of a flat contact surface for the dimensionally stable ring, the receiving bore can also have a cylindrical countersinking, whereby a guide of the dimensionally stable ring is possible on its outer diameter.

The sealing element is a molded part made of an elastic material.

It can have a profile adapted to the outer profile of the corrugated tube or corrugated tube. Further, it may be embodied in a cross-section, the circumferential line in the contact region to the wave crests is approximately rectilinear, while it is curved in the region of the troughs and in the contact region to the bore. Likewise, it may be designed with a triangular, trapezoidal, rectangular or oval-shaped cross section.

The sealing of the connection connection can be improved by arranging a second sealing element in a trough existing behind the terminal trough. Here, the use of a suitable round ring is possible.

The component surrounding the hole can be a sleeve in the simplest case. It is also possible that a threaded connector, a surface, a threaded sleeve or a socket to receive the bore.

Depending on the embodiment of the surrounding component, a fastening component of compatible type is used, this being first pushed onto the corrugated hose end forming the connection. Preferred designs of the fastening component are union nuts, cap screws, loose flanges.

During the preparation of the connection connection, the prepared corrugated tube end is inserted with the sealing element into the bore so far that the dimensionally stable ring rests against the outside of the bore. Subsequently, the fastening component of the shape is connected to the surrounding component, that the dimensionally stable ring is clamped between the two and thereby fixes the corrugated tube end axially.

The invention will be explained in more detail below with reference to some embodiments and drawings. Showing:

1 - A schematic representation of the connection connection according to the invention in a partially sectioned illustration.

2 A dimensionally stable ring used for the connection.

A corrugated hose end 1 is at its front 2 separated in the region of a wave trough, so that there is a perpendicular to the corrugated tube extending separation surface and the Wellschlauchende 1 with a wave mountain 3 concludes. The terminal trough 4 takes a sealing element 5 on, that the corrugated tube end 1 opposite the hole 6 seals. At the front 7 of the female component 8th is a dimensionally stable ring 9 at the same time reaching into a trough 10 of corrugated tube end. A fastening component 11 , here a union nut, is on the end 12 of the female component 8th , which forms a threaded connector here, screwed on and the dimensionally stable ring 9 jammed in the axial direction.

Another elastic sealing element 13 is in a trough 14 arranged and can serve to improve the sealing of existing connection connection.

The dimensionally stable ring 9 is in 2 reproduced in a partially expanded position. He has a first 15 , second 16 and a middle arc segment 17 , which are connected to one another in the same material. The connection points are with the recesses 18 respectively. 19 connected so that deformations during spreading or closing of the dimensionally stable ring due to the reduced cross-sectional areas 9 on the areas of rejuvenation 18 and 19 restrict.

Opposite the middle arch segment 17 has the dimensionally stable ring 9 an opening 20 pushing on the corrugated tube end 1 allows.

The connecting connection according to the invention can be produced by a sequence of working steps, wherein initially on a Wellschlauchende 1 a fastening component 11 is postponed. Subsequently, a dimensionally stable ring 9 expanded so far that he is on the Wellschlauchende 1 postpone and upon reaching the designated wave trough 10 of corrugated tube end 1 closed again.

The following is an elastic sealing element 5 into the terminal trough 4 inserted.

The prepared corrugated hose end 1 is then in the hole 6 of the female component 8th pushed in until the dimensionally stable ring 9 at the frontal area 7 of the female component 8th is applied.

Subsequently, the fastening component 11 with the receiving component 8th firmly connected while the dimensionally stable ring 9 clamped between the two.

Another embodiment of the connection provides an additional sealing element 13 before, in an additional step in another wave trough 14 the Wellschlauchendes is arranged.

To facilitate the assembly of the connection connection can be made in the area of the bore 6 an insertion bevel 21 additionally arranged.

The dimensionally stable ring 9 can also be produced from a spring material. Furthermore, it may have a rectangular, trapezoidal, circular, semicircular or adapted to the profile of a wave trough cross-section.

The sealing element may be a profile ring. This has expediently in the direction of the surfaces to be sealed or even an excess.

Advantageous embodiments of the profile ring are those with a triangular, trapezoidal, rectangular or oval-shaped cross-section.

A particularly preferred form of the profile ring has a cross-sectional shape in which the contact surfaces are each plane to the wave crests and the opposing flat surfaces are maintained at an angle to each other, which corresponds approximately to the angle that have the contact surfaces of the wave crests at this point , The contact surface to the bore wall and the surface facing the wave trough, however, are curved.

A preferred form corresponds approximately to a circular ring, which has partial planar surfaces in the area of contact surfaces with the wave crests.

The profile ring consists of an elastic material, which can also be foamed. The material parameters as well as the shape characteristics are to be adapted to the parameters present in the application.

An embodiment of the profile ring may also be a round ring, provided that this dimensioning and other parameters can solve the task.

It is also possible to provide the profile rings on its outer surface with a coating.

The fastening component 11 can be any type of fastener provided it is a jamming of the dimensionally stable ring 9 opposite the receiving component 8th allows.

The receiving component 8th can be a threaded sleeve, a screwed or any other component that the bore 6 be, be.

The invention thus has the advantage that it allows the production of a connection connection for corrugated tube ends in a simple manner, with a limited range of additional components and in a large variety of variants with only low demands on the qualification of executing persons and extent both in industrial applications as well as assembly work Can be used in the installation area without difficulty.

LIST OF REFERENCE NUMBERS

1

Corrugated hose end

2

front

3

Wellenberg

4

End trough valley

5

sealing element

6

drilling

7

front

8th

Receiving component

9

Dimensionally stable ring

10

trough

11

attachment member

12

End of the receiving component [ 8th ]

13

sealing element

14

trough

15

First arc segment

16

Second arc segment

17

Middle arc segment

18

recess

19

recess

20

opening

21

chamfer

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• FR 2542845 A1 [0003]
• DE 19516147 A1 [0003]
• EP 0939265 A2 [0003]
• WO 2006/136151 A1 [0003]
• DE 9320431 U1 [0005]
• US 2363586 [0006]
• US 3008738 [0006]
• EP 0801258 A2 [0006]
• EP 0557594 B1 [0007]
• AT 502404 B1 [0012]
• DE 102008050073 A1 [0014]

Claims (8)

Connection connection for a corrugated hose, with parallel corrugated wall profiles present at at least one end, in which the end of the corrugated tube is received by a bore in a surrounding component, a sealing element is arranged in a terminal trough of the corrugated pipe or corrugated hose, a dimensionally stable ring is arranged in a wave trough lying behind it and behind this a fastening component, wherein the dimensionally stable ring is fixed between them by its attachment to the component forming the bore. Connection according to claim 1, characterized in that the dimensionally stable ring: is a one-sided open ring which is expandable and closable under deformation and / or by elastic deformation, has a rectangular, trapezoidal, oval-shaped, circular or adapted to the wave profile of the corrugated tube or corrugated tube cross section and has in its circumference at least one cross-section reducing constriction which is deformable. Connection according to claim 1, characterized in that the sealing element a profile ring: with a cross-section adapted to the profile of the corrugated tube or corrugated tube or with a cross section whose circumferential line in the contact region to the wave crests in approximately rectilinear and in the region of the troughs and in the contact area to the bore with bulges or with a triangular, trapezoidal, rectangular or oval-shaped cross-section. Connection according to one of claims 1 to 3, characterized in that a second elastic sealing element is arranged in a lying behind the terminal wave trough trough. Connection according to claim 4, characterized in that the second sealing element is a circular ring. Connection according to one of claims 1 to 4, characterized in that this can be obtained by the successive execution of the following steps: Sliding on a fastening component onto a corrugated pipe or corrugated hose end, Expanding a dimensionally stable ring with simultaneous deformation, positioning it in a groove of a wave trough and closing the dimensionally stable ring with simultaneous deformation, Expanding a resilient sealing element, positioning it over the terminal trough and relaxing it so that it partially penetrates into the trough, Inserting the corrugated tube or corrugated tube end into a bore, Establishing a firm connection between the component forming the bore and the fastening component, - Wherein the dimensionally stable ring is fixed between the two. Connection according to claim 6, characterized in that expanded in an additional step, an additional elastic sealing element, the same pushed over the corrugated or Wellschlauchende and relaxed in a lying behind the terminal trough corrugation, where it at least partially fills the same. Connection according to one of claims 1 to 7, characterized in that the bore on the connection side has an insertion bevel and / or a rounded front edge.

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