DE102018010346A1 - Pipe arrangement, in particular casing arrangement - Google Patents

Abstract

The invention relates to a pipe arrangement (1), in particular in the form of a casing arrangement, comprising a first pipe (10) with a sleeve (11), a second pipe (30) which can be inserted into the sleeve (11) of the first pipe (10), and at least one Locking ring (32) as a stop for the first tube (10), the at least one locking ring (32) being placed on the second tube (30) and being removable to shorten the length of the tube arrangement (1), so that the second tube (30) can be inserted further into the first tube (10). The locking ring (32) has an annular, radially inward extension (33), the second tube (30) having a groove (31) for axially fixing the locking ring (32) and only the radially inward extension ( 33) of the locking ring (32) sits in the groove (31).

Description

The invention relates to a pipe arrangement, in particular designed as a casing arrangement. Casing pipes are also referred to as shaft chucks or pipe penetrations.

For example, casing pipes made of fiber cement are known from the prior art which, after being poured with concrete, for example, keep a passage opening free in a wall or floor element. A line can then be passed through these and sealed against the casing.

Other developments show that the casing pipes are made of plastic material instead of fiber cement. The publication WO 2007/082364 A1 relates, for example, to an implementation with a tubular element made of two sleeves which can be pushed into one another and which can be locked in different relative positions by means of form-locking elements.

The publication US 5,405,119 A also relates to a bushing with two sleeves which can be pushed into one another, a tensioning clamp being arranged on the inner of the two sleeves, which clamp represents a stop for sliding on the outer sleeve. A rubber band pulls the outer sleeve into this stop. However, it is not possible to change the length of the pipe without tools.

The publication EP 2 899 332 B1 relates to a two-part shaft chuck, which allows the length to be adjusted with a lock between the two shaft chuck parts. The two parts are connected to each other without a seal, which can lead to the fact that concrete milk can penetrate.

The publication EP 2 338 658 B1 relates to sealing packs from which a casing can be produced by connecting it to a piece of pipe of any length. A sealant is provided between the sealing package and the connecting pipe. However, the tube must be cut to length manually.

The invention is based on the object of specifying a pipe arrangement, in particular in the form of a casing arrangement, which, with a simple construction and simple, inexpensive manufacture, is easy to assemble and enables a permanently sealed implementation. In particular, the pipe arrangement should be able to be adjusted to different lengths without tools and / or be sealed against the ingress of concrete milk.

The solution of the invention is achieved by the features of the independent claim. The dependent claims relate to preferred embodiments of the invention.

The task is thus solved by a pipe arrangement. The pipe arrangement is designed in particular as a casing arrangement. The casing arrangement is used, for example, for casting with concrete in a wall or floor element to keep a passage opening free.

The pipe arrangement comprises a first pipe and a second pipe. The first pipe has a sleeve. The second tube can be inserted into this sleeve of the first tube.

Furthermore, the tube arrangement comprises at least one locking ring as a stop for the first tube. The at least one locking ring is on the second tube. When the two pipes are inserted into each other, the first pipe is in contact with the locking ring. As a result, the locking ring determines the length of the tube arrangement. To shorten the length of the tube arrangement, the at least one locking ring can be pulled off, so that after the locking ring has been removed, the tube can be inserted further into the first tube and is in contact with a second locking ring or with an end stop.

In a preferred embodiment it is provided that the second tube on the outside diameter or the first tube on the inside diameter has an end stop for the respective other tube, the end stop determining the shortest length of the tube arrangement when all locking rings are removed.

For the sake of simplicity, the design of a locking ring is usually described below. However, it is always preferred that a plurality of locking rings are used and that the plurality of locking rings are designed and / or arranged in accordance with the description of the one locking ring.

The locking ring is arranged in a groove in the second ring. The locking ring has an annular, radially inward projection. This extension is significantly narrower than the rest of the locking ring. Accordingly, the groove for axially fixing the locking ring can also be made correspondingly narrow. Then only the radially inward extension of the locking ring sits in the groove.

The tube arrangement preferably comprises one, two, three, four or five of the locking rings. By removing the corresponding number of locking rings, the length of the pipe arrangement can be gradually reduced.

It is preferably provided that the locking ring can be removed without tools. The locking ring can be gripped by the fitter by hand and in particular pulled off perpendicular to the axial extension of the pipe arrangement.

The locking ring particularly preferably has a handle for manual gripping and pulling off the locking ring. An opening width is preferably defined on the handle. This opening width is preferably at least 3 cm, in particular at least 5 cm. Due to this correspondingly large opening width of the handle, the fitter can grip and pull off the handle with several fingers. The handle is preferably designed such that its opening width extends perpendicular to the axial direction of the tube arrangement.

In a preferred embodiment, the entire locking ring is made in one piece, in particular from plastic. In particular, the optionally used handle is also an integral part of the remaining annular portion of the locking ring.

Alternatively or in addition to the handle, the locking ring can also have a tool opening. This tool opening is designed in particular for receiving a tip of a hammer (carpenter's hammer / lathing hammer). By inserting the tool into the tool opening, the tool can be pulled and the locking ring can be removed.

The locking ring is in particular designed such that it can be removed without being destroyed. This makes it possible, in particular, to put the snap ring back on the second tube if the snap ring is removed incorrectly.

In particular, the locking ring is designed as an open ring. The locking ring preferably extends over at least 200 ° of the second tube, in particular over at least 250 °.

It is preferably provided that the pipe arrangement between the two pipes has a full-length sealant, in particular an elastomer sealing ring. The first tube particularly preferably has a bead, in particular in the area of the sleeve. The full sealant is arranged in this bead. This sealant seals in particular against the concrete milk, which could otherwise penetrate between the two pipes when the pipe arrangement is poured.

Furthermore, it is preferably provided that the first tube and / or the second tube has / have a full circumferential sealing means, in particular in the form of an elastomer sealing ring. This external seal seals against water penetration at the interface between the pipe arrangement and the concrete wall, thus preventing further moisture penetration into the interior of the wall. In particular, it is provided that the external sealant is guided in a circumferential groove in order to prevent displacement in the axial direction when concreting.

Furthermore, it is preferably provided that at least one of the two tubes comprises a plate spring section. This disc spring section is used for axial tolerance compensation. In particular, tolerances in the formwork spacing can be accommodated and the sealing edges on the flanges are always pressed against the formwork walls.

The plate spring section connects two pipe sections. The two pipe sections differ in particular in their diameters. The plate spring section is in particular made thinner than the two pipe sections; additionally or alternatively, the plate spring section can be made from a less rigid material than the pipe sections. In particular, the pipe sections and the plate spring section are made in one piece. The plate spring section extends in particular at an angle of up to plus / minus 45 ° to the perpendicular to the axial direction.

The second tube preferably has an inner cone or an inner stop to prevent an insertable element from being pushed out. This element that can be used is in particular a pinch seal. The cone tapers in particular from the tip end to the flange end of the second pipe and thus acts as a push-out protection for the insertable element, for example from the inside of the building. In the event of water coming from the outside of the building wall, the insertable element is pushed against the cone and prevented from pushing through due to the narrowing of the cross-section. The internal stop can also perform this function. This inner stop is designed in particular as a stepped change in diameter. The inner cone or inner shoulder preferably forms the region of the second tube with the smallest diameter. The inner cone or inner shoulder tapers the second tube preferably by a maximum of 10%, further preferably a maximum of 5%, particularly preferably a maximum of 3%. The taper relates to a first inner diameter immediately next to the inner cone or inner shoulder and a second inner diameter at the narrowest point of the inner cone or inner shoulder.

The first tube and / or the second tube preferably each comprise a flange. The flange and the rest of the component corresponding tube are preferably made in one piece, in particular by injection molding from plastic.

The formation of a flange is described in particular below. However, flanges are preferably provided on both tubes. Both flanges can preferably have one or more of the preferred configurations.

The flange on the inner diameter preferably comprises at least one bayonet catch element. This bayonet catch element is used in particular for fastening a cover, in particular a blind cover.

The flange preferably has holes on its outer circumference, in particular nail holes, for fastening to a formwork. This allows the pipe arrangement to be fixed to the formwork when concreting.

Furthermore, the flange preferably comprises one or more axially projecting sealing edges. The sealing edges are in particular one-piece components of the flange which protrude in the axial direction and bear against the formwork when concreting. As already described, the plate section is preferably provided, which ensures that the sealing edges lie tightly against the formwork.

Particularly preferably, at least one sealing edge is provided radially outside the holes (nail holes).

The invention further comprises a sealing arrangement comprising a tube for receiving a pinch seal, the tube comprising an inner cone or inner stop as a push-out protection of the pinch seal, and wherein the inner cone or inner stop is designed such that an elastic sealing element of the pinch seal can be pressed against the inner cone or inner stop . The sealing arrangement preferably also includes the pinch seal.

The pinch seal is, for example, in DE 10 2015 219 599 A1 described as a "crimp flange". The crimp seal is used to pass cables and hoses through the pipe. The pinch seal preferably comprises a tensioning element on both axial sides of the elastic sealing element. The two clamping elements are braced against each other, whereby the sealing element is squeezed radially against the inner cone or inner shoulder.

The tube of the sealing arrangement is preferably part of a casing arrangement (in particular the second pipe of the casing arrangement described above) or preferably forms a casing. The cone tapers in particular from a spigot end to a flange end of the tube and thus acts as an extension protection for the insertable element, for example from the inside of the building.

The inner cone or inner shoulder preferably forms the area of the tube with the smallest diameter. The inner cone or inner shoulder tapers the tube preferably by a maximum of 10%, further preferably a maximum of 5%, particularly preferably a maximum of 3%. The taper relates to a first inner diameter immediately next to the inner cone or inner shoulder and a second inner diameter at the narrowest point of the inner cone or inner shoulder.

• 1 eine erfindungsgemäße Rohranordnung gemäß einem Ausführungsbeispiel,
• 2 ein erstes Rohr der erfindungsgemäßen Rohranordnung gemäß dem Ausführungsbeispiel,
• 3 ein zweites Rohr der erfindungsgemäßen Rohranordnung gemäß dem Ausführungsbeispiel,
• 4 Details des zweiten Rohrs, und
• 5 ein Detail des ersten Rohrs.

Further details, advantages and features of the present invention result from the following description of an embodiment with reference to the drawing. It shows:

• 1 a pipe arrangement according to the invention according to an embodiment,
• 2nd a first tube of the tube arrangement according to the invention according to the embodiment,
• 3rd a second pipe of the pipe arrangement according to the invention according to the embodiment,
• 4th Details of the second pipe, and
• 5 a detail of the first pipe.

The following is based on the 1 to 5 a pipe arrangement 1 , designed as a casing arrangement, described in detail. All figures are always referred to.

The pipe arrangement 1 comprises a first tube 10th and a second pipe 30th . The two pipes 10th , 30th can be pushed into each other. 1 shows the position of the two pipes 10th , 30th in a coaxial position, but not yet pushed together.

The first pipe 10th includes a sleeve at one end 11 and a flange at the opposite end 16 . There is a bead on the sleeve side 12th educated. In the bead 12th a circumferential sealant (not shown) is arranged. This sealant in the bead 12th seals against the insertable second tube 30th from.

The first tube also includes 10th a circumferential sealant on its outer circumference 13 , which is guided in a corresponding groove. The external sealant 13 seals against the concrete wall or concrete floor.

It also includes the first pipe 10th a disc spring section 14 for axial tolerance compensation. This disc spring section 14 is in detail in 5 shown. According to the schematic representation in 5 points the first pipe 10th two pipe sections 15 on. The two pipe sections 15 are over the disc spring section 14 connected with each other. The wall thickness of the disc spring section 14 is less than the wall thickness of the two pipe sections 15 . The disc spring section 14 extends essentially perpendicular to the axial direction, that is to say in the radial direction.

Especially the representation in 2nd shows the design of the flange 16 of the first pipe 10th . The flange 16 has several axially extending holes on its circumference 17th on. These holes 17th are designed in particular as nail holes and are used to fix the flange 16 on a formwork.

The flange also includes 16 two circumferential sealing edges 18th . The holes 17th are located between the two sealing edges 18th . The sealing edges 18th are used to seal against formwork.

Furthermore shows 2nd the arrangement of bayonet lock elements 19th inside the flange 16 . These bayonet lock elements 19th are used, for example, to fix a blind cover.

The second pipe 30th comprises two grooves in the exemplary embodiment shown 31 for the axial fixation of one locking ring each 32 .

The respective locking ring 32 has an annular, radially inwardly extending extension 33 on. The process 33 measured in the axial direction, it is considerably narrower than the rest of the locking ring 32 . The grooves are correspondingly narrow 31 educated. The locking rings 32 sit with the narrow extensions 33 in the narrow grooves 31 .

The locking rings 32 are designed as open rings and can therefore be detachably removed without destroying them.

For detaching without tools, the locking rings include 32 a handle 34 . The handle has a relatively large grip width 35 so that it can be gripped with several fingers 34 can be intervened.

If the two locking rings shown 32 on the second pipe 30th the two pipes 10th , 30th until the first pipe hits 10th on the left locking ring 32 are pushed into each other. The left locking ring 32 removed, the two pipes 10th , 30th until the first pipe stops 10th on the right locking ring 32 are pushed together.

In particular 3rd shows that also the second pipe 30th a flange 36 having. The flange 36 includes like the flange here 16 two circumferential sealing edges 18th . Inside the flange 36 there are also bayonet catch elements 19th , for example for a dummy cover. The holes 17th , especially nail holes, are usually only on one of the two flanges 16 , 36 trained, but can also on both flanges 16 , 36 be provided.

4th shows the design of an inner cone purely schematically in the upper representation 37 in the second tube 30th . The lower illustration in 4th shows that an inserted element, here a pinch seal 2nd , on this inner cone 37 can be secured against extension. As an alternative to the inner cone 37 can in the second tube 30th also a corresponding paragraph for the extension protection of the pinch seal 2nd be used.

Furthermore shows 4th also the independently described sealing arrangement 50 embracing the pipe 30th to accommodate the pinch seal 2nd , the pipe 30th the inner cone 37 having. The press seal 2nd comprises an elastic sealing element on both axial sides 51 one clamping element each 52 . The two clamping elements 52 are braced against each other, creating the sealing element 51 radial to the inner cone 37 is squeezed.

The inner cone 37 forms the area of the pipe 30th with the smallest diameter. The inner cone tapers the tube 30th . The taper relates to a first inner diameter 53 immediately next to the inner cone 37 and a second inner diameter 54 at the narrowest point of the inner cone 37 .

In addition to the above written description of the invention, reference is hereby explicitly made to the graphic representation of the invention in all the figures for its supplementary disclosure.

Reference list

1

Pipe arrangement

2nd

insertable element, especially press seal

10th

first tube

11

sleeve

12th

Surround

13

sealant

14

Belleville spring section

15

Pipe sections

16

flange

17th

Holes

18th

Sealing edges

19th

Bayonet catch elements

30th

second pipe

31

Grooves

32

Locking rings

33

Continuation

34

Handle

35

Grip width

36

another flange

37

Inner cone

50

Sealing arrangement

51

Sealing element

52

Clamping elements

53

first inner diameter

54

second inner diameter

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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.

Patent literature cited

• WO 2007/082364 A1 [0003]
• US 5405119 A [0004]
• EP 2899332 B1 [0005]
• EP 2338658 B1 [0006]
• DE 102015219599 A1 [0034]

Claims (9)

Pipe arrangement (1), in particular designed as a casing arrangement, comprising A first pipe (10) with a sleeve (11), • a in the sleeve (11) of the first tube (10) insertable second tube (30), and • at least one locking ring (32) as a stop for the first tube (10), the at least one locking ring (32) being on the second tube (30) and being removable to shorten the length of the tube arrangement (1), so that the second tube (30) can be inserted further into the first tube (10), Wherein the locking ring (32) has an annular, radially inward-facing extension (33), • The second tube (30) has a groove (31) for axially fixing the locking ring (32), and • Only the radially inward extension (33) of the locking ring (32) is seated in the groove (31). Pipe arrangement according to one of the preceding claims, wherein the locking ring (32) can be removed without tools. Pipe arrangement according to one of the preceding claims, wherein the locking ring (32) comprises a handle (34) for manual gripping and pulling off the locking ring (32). Pipe arrangement according to one of the preceding claims, wherein the locking ring (32) is designed to be non-destructively removable. Pipe arrangement according to one of the preceding claims, wherein the locking ring (32) is designed as an open ring. Pipe arrangement according to one of the preceding claims, wherein the second pipe (30) on the outer diameter or the first pipe (10) on the inner diameter has an end stop for the other pipe, the end stop being the shortest length of the pipe arrangement (1) when all the locking rings ( 32) determined. Pipe arrangement according to one of the preceding claims, comprising a comprehensive sealing means between the two pipes, preferably in a bead (12) in the first pipe (10). Pipe arrangement according to one of the preceding claims, wherein at least one of the two pipes (10, 30) comprises a plate spring section (14) for axial tolerance compensation, the plate spring section (14) connecting two pipe sections (15). Pipe arrangement according to one of the preceding claims, wherein the second pipe (30) comprises an inner cone (37) or an inner stop as a push-out protection for an insertable element, preferably a pinch seal (2).

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