EP0538197B1 - Device for connection of a flexible pipe under a wall plaster and a faucet over wall plaster (housing with flexible end position) - Google Patents

Abstract

A device which is used as connection between at least one flexible pipeline (1), laid under plaster, and a fitting to be arranged over plaster comprises a socket (4, 5a, 5b, 6) and an angled pipe piece (3) which can be introduced into the socket (4, 5a, 5b, 6). The socket (4, 5a, 5b, 6) has a socket head (54) and at least one socket neck (55). The socket neck (55) contains both the connected end of the angled pipe piece (3) and a portion of at least one pipeline (1) connected to the angled pipe piece. According to the invention, the socket neck (55) is designed to be capable of bending (59). At the lower end of the socket neck (55) there is preferably provided an offset clamping member (60) which is, however, connected to the socket neck via a connecting web (61) and is intended for the fixed clamping of an outer pipe (2) of the pipeline (1). <IMAGE>

Description

The invention relates to a device as a connection between at least one flexible installed under plaster Pipeline and a fitting to be plastered, comprising a can and an angle tube piece that can be inserted into the can, the can being a can head and at least has a can neck, the at least one can neck both the connected end of the angle tube piece as also a section of at least one connected to the angle tube piece Encloses the pipeline.

A device of the type mentioned is such. B. from the German utility model GM 79 27 117 known. It deals is a connection device for outlet fittings, as typically used in bathroom installations occurs. A plastic jar with one inside Connector for connecting a plastered Water pipe with a fitting to be plastered fixed in a recess in a wall. The right one Pipe is connected to the connector. Then the connection is made with a clampable protective sleeve made of plastic covered from the front.

There are also connection devices where the elbow pipe piece is attached to the wall in a rubber sleeve, so that afterwards the correctly cut pipe is connected can be. One also on this assembly technique based junction box for flexible pipes is out European patent application EP 0 354 177-A1. Again, the facility is initially in a wall recess fixed and then the flexible, cut pipe connected. Here, too, is a two-part plastic protective sleeve to cover the angle tube piece resp. the terminal clamp intended.

The advantage of the assembly technology mentioned is that First mount the elbow pipe in the right place can be and afterwards only connect the pipe is. The elbow pipe piece therefore needs during assembly not to be held in the hand. However, the Do not clamp the protective tube of the can neck as it can be moved have to be. The protective tube can therefore come out of the can neck slip out.

US 5,031,940 (Stefanos) discloses a can with an angle tube piece. The can has a removable stiff neck. The can head is in a rear wall part and a front wall part can be dismantled. With a lock ring the angle tube piece can be fixed in the box. Of the Neck tapers from top to bottom and is one in diameter flexible protective tube adapted.

The object of the invention is to provide a device of the beginning Specify the type mentioned, which the in the prior art avoids existing disadvantages. In particular, the facility should under the most diverse circumstances simple and be easy to install.

According to the invention, the solution is that the can neck is designed to be bendable. The can can't do that only at 90 ° - but also at acute angles, e.g. B. 60 ° arrangements be used. The flexibility of the can neck has particular advantages when installing the can in lightweight walls. The pipe can vary depending on local conditions be led away in suitable directions.

A bellows-type can be used on the can neck to achieve flexibility Section be formed. But it is also possible the can neck overall from an elastic or u. U. plastic to produce deformable material. The bendability does not need the entire length of the can neck to be given. The can neck can e.g. B. next to the bendable Section have one or more rigid sections.

If the can neck is the outer tube, especially the transition between the outer tube and the connector is drip-proof encloses, then water damage can be despite existing minor leaks can be avoided.

The can neck is advantageously designed such that an outer tube (Protective tube) of the pipeline can. This can prevent that in the Usually pulls the ribbed outer tube out of the can neck and as a result, the inner tube, respectively. the junction is no longer covered. With a cross-ribbed pipe this z. B. with an appropriately sized rib accomplish on the inside of the can neck. For any equipped outer tubes can be the intended Reach the goal with a clamp or the like.

According to a particularly preferred embodiment, the characteristics of which are also independent of those described above Are applicable, the can neck at the bottom, a pincer-like (or C-shaped) end facing away from the can head Clamping element for clamping the outer tube. The clamping member can with the help of tools or be operable by hand. One is particularly advantageous that is designed in the manner of a ring open on one side is, which is radially resilient due to its shape. At rest the inner diameter of the ring is slightly smaller than the outside diameter of the pipe to be fixed. The latter can therefore be clamped radially. To fix a ribbed External tubes are suitable on the inside of the clamping element molded cross ribs.

The clamping member is preferably as a substantially remote Element trained. A connecting bridge, the one hinge-like mobility of the clamping member relative to the Can neck enables, connects the clamping member with the can neck. Can neck, connecting web and clamping member are preferred from the same mould.

This can happen when inserting the protective tube into the can neck Clamping element to be bent back and then for fixation of the pipe in its intended position will. So there are only a few simple ones for assembly Hand movements are required. In particular, one that cannot be opened Can neck, which is technically advantageous, is in Combination with the clamping element essential for the fitter more attractive.

This is an advantageous embodiment variant from that in order to create an additional, alternative Possibility of mounting the box in a box head and at least one can be attached to this attachable can neck is that the one inserted in the can head and fastened in it Elbow pipe piece with its at least one Pipeline end to be connected from the can head in this way stands out that the correctly cut to length at least one Pipe can be connected to this end without that the contra-angle be taken out of the can head must, and that the retrofitted to the can head at least a can neck both the connected end of the Elbow pipe piece as well as a section of the connected encloses at least one pipeline.

This variant does not only bring assembly Advantages with it, but also in terms of production. While so far the insertion of the usually metallic angle tube piece into the plastic box for those components was tedious, which were based on the principle that the elbow pipe was fixed in the socket before connection, see above it is now because of the short and openable Can is possible without problems, even relatively large angle tube pieces already in the factory in the corresponding cans to fix. The dimensions of these cans do not need more oversized with regard to the insertion of the angle tube piece to become.

From the point of view of the fitter, it is of course particularly pleasant that he can decide on the spot in which way he want to install the connection device.

Is preferably at one end of the angle tube piece for connection the pipe has a clamping ring device with a Union nut provided. The can is so in Can head and can neck separated that the angled tube piece with the union nut protruding from the can head. This way there is enough space to handle one Wrench when connecting the pipeline the angle tube piece inserted in the can head ensures.

According to a particularly preferred embodiment, the Can neck tubular and essentially consists of two half-shells that can be joined together with a form-fitting connection together. Suitable connection means in Plastic, lockable closures such. B. Snap fasteners, snap closures and the like. The can neck can so after connecting the pipe to the elbow pipe attached and does not need on the outer tube to be movable. He can also do it later can be attached at any time and is not mandatory connecting the pipe over the outer pipe will.

It is advantageous if the half-shells with plug-type closure Lanyards are equipped so that the can neck by hand and without the use of tools can be attached. The same applies to the connection between can neck and can head. In practice it recommends itself, the half-shells on one side with hinge mechanisms to be inextricably linked. This can be avoided that one of the two half-shells is lost.

A can neck that can both be pushed over the outer tube as this can also clamp, is characterized from that the plug-and-socket fastener latches at least two Have positions, the cross-section in the first position of the can neck is large enough to fit the can neck to be able to slide over the outer tube, and in the second Position is small enough to clamp the outer tube. It is particularly advantageous if the connecting means between the can neck and the can head are designed so that the can neck can also be attached to the can head if the connector means locked in the first position are. The can can then z. B. on delivery from the factory handled as a one-piece, coherent housing will. When assembling, the can neck can be from Can head removed, put over the outer tube and after connecting the inner tube to the angle tube piece at the desired location by radial pressure on the outer tube be fixed.

The mentioned can neck according to the invention can also be complete regardless of the other features of the invention be used. One that can be assembled from two half-shells Can neck or a can neck with double locking plug connection can generally be used with all those cans that can be separated into a can head and a can neck are.

The can head is e.g. B. cylindrical respectively. in terms of form derived from a cylinder, the cylinder axis essentially perpendicular to the axis of the (installed under plaster) Pipeline stands. The fitting to be connected via plaster facing side of the can head is with a lid resp. Locking ring partially lockable. At the point where the angled pipe piece from the can head (e.g. downwards) should protrude, is the can head with a recess provided that is open towards the front, so that Angled tube piece can be inserted into the can head from the front. Around Close the can head from the front and the angle tube piece to be able to fix it, it points to its open front Side a thread on which a locking ring can be screwed is. The locking ring encompasses the angle tube piece on his facing the fitting to be mounted on plaster The End.

When the inner tube is replaced in the event of a repair then it is of course an advantage if the wall is not needs to be sharpened. A damage-free replacement is possible in principle with the invention because the locking ring unscrewed at the front of the can and the angle tube piece with the connected inner tube in the well-known Way can be pulled out. With a view to such repair, it is advantageous if the lock ring do not grip the can from the outside, but screw it into the can can be. According to a particularly preferred Embodiment of the invention therefore has the can snap-on ring that can be partially attached from the front Internal thread provided on the can head added. In this internal thread completed by the snap ring then the locking ring can be screwed in.

So that a twisting of the angled tube piece during assembly of the Flush-mounted fittings are prevented, the can head shows its interior consists of at least one groove-like depression, in the form of a rib-like projection of the angled tube piece intervenes. If the elbow pipe piece with the locking ring is fixed in the can, then the rib-like lies Projection in the groove-like depression. Preferably the elements mentioned interlock in a dovetail shape a.

From the following description and the dependent claims there are further advantageous combinations of features the invention.

Fig. 1

Eine Explosionsdarstellung einer erfindungsgemässen Einrichtung;

Fig. 2a-e

eine Frontansicht sowie verschiedene Schnitte der erfindungsgemässen Einrichtung;

Fig. 3

einen Schnitt durch einen Dosenhals mit zwei mit einem Scharnier verbundenen Halbschalen;

Fig. 4a-c

eine Dose mit einem Schnappring;

Fig. 5a-c

einen Dosenkopf mit zentral angeordneten Widerlagern;

Fig. 6a-f

eine Dose mit einem doppelt rastenden Dosenhals;

Fig. 7a,b

eine Dose mit einem biegbaren Dosenhals und einem flexiblen Klemmorgan;

Fig. 8a-c

eine Darstellung der wichtigsten Montageschritte beim Anbringen eines Dosenhalses an ein Aussenrohr;

Fig. 9

eine Veranschaulichung des seitlichen Entlanggleitens des Klemmrohres auf dem Aussenrohr;

Fig. 10

eine Schnittdarstellung einer Leichtbauwand-Dose;

Fig. 11a,b

eine Darstellung einer erfindungsgemässen Doppeldose.

The invention will be explained in more detail below on the basis of exemplary embodiments and in connection with the drawings. Show it:

Fig. 1

An exploded view of an inventive device;

2a-e

a front view and various sections of the inventive device;

Fig. 3

a section through a can neck with two half-shells connected by a hinge;

4a-c

a can with a snap ring;

5a-c

a can head with centrally arranged abutments;

6a-f

a can with a double-locking can neck;

7a, b

a can with a flexible can neck and a flexible clamping member;

8a-c

a representation of the most important assembly steps when attaching a can neck to an outer tube;

Fig. 9

an illustration of the lateral sliding along the clamping tube on the outer tube;

Fig. 10

a sectional view of a lightweight wall box;

11a, b

a representation of a double can according to the invention.

Basically, the same parts are in the different figures provided with the same reference numerals.

Fig. 1 shows the individual parts of an inventive Facility in perspective. One under plaster installed pipeline with a flexible inner tube 1 and preferably ribbed and also flexible outer tube 2 is to be connected to an angled pipe section 3 in such a way that a tap to be arranged over plaster (e.g. a water tap or a mixing head) can be connected. So that Elbow pipe section 3 and the pipe in the wall under plaster can be walled in, are the angle tube piece as well cover at least a section of the pipeline with a can. In the event of a later defect, it is therefore possible especially with not too large pipe diameters, the elbow pipe respectively. replace the inner tube 1 without to sharpen the wall. Even if a sharpening at large pieces of angled pipe should be inevitable this is only necessary to a very limited extent.

Since the plastered pipeline is essentially parallel runs to the wall surface, the fitting on the other be connected essentially perpendicular to this the two openings (one with the reference symbol 9 can be seen) of the pipe elbow 3 essentially at right angles to each other. That in the Rule piece 3 made of metal therefore has two Pipe lugs 21 and 22. The one with its front side to be arranged over plaster Pipe extension 21 facing the fitting tapers conically to the rear in the pipe extension to be connected to the pipeline 22 over. At the rear end of the slightly conical taper and thus opposite the opening 9, a rib 12 is provided. It preferably runs in the direction of the axis of the Rohransatzes 22. The meaning to be described below this rib 12 depends on the fixation of the angle tube piece 3 in a can together.

So that the inner tube 1 is connected to the angle tube piece 3 can be, the tube extension 22 has a clamping ring closure with a union nut 10. The cap nut 10 includes the tube extension 22 from the outside. For the rest is the clamping ring closure is designed in a manner known per se. The union nut 10 can be removed from the tube extension 22 or be captively connected to it.

The tube extension 21 is with a z. B. annular stop flanges 11 provided that the opening 9 slightly is set back. It enables the angle tube piece 3 to fix in the can.

Finally, the tube extension 21 has an internal thread 7 provided for connecting the surface-mounted fitting.

The box which holds the connector (3) just described protects, preferably consists of several individual parts together. In the present case, it is a cylindrical can head 4, one essentially two half-shells 5a, 5b which can be assembled and one Lock ring 6.

The can head 4 is according to a preferred embodiment trained so that he the whole angle tube piece 3 with the exception the union nut 10 takes. In the present example it is cylindrical, more or more less adapted to the pipe socket 21. If the elbow pipe piece 3 is housed in the can head 4, the axes run of the cylindrical can head 4 and the tube extension 21 parallel to each other. The cylindrical can head 4 has in the jacket a recess 23 for the tube extension 22. she runs from the front in the axial direction to the rear, so that the angled tube piece 3 with its tube extension 22 from the front in the can head 4 can be inserted. The recess 23 must therefore at least as wide as the diameter of the tube extension 22 be.

Seen from the front, the can head 4 thus looks arcuate out. Preferably, its angle extends more than 180 °. The can head 4 is closed on the rear side. On its outside it has z. B. suitable protrusions (one of which can be seen as 14) on to to attach the can neck. Arranged on the front of the can head Thread 8, the locking ring 6, the has a corresponding thread 7, screw on. Preferably the cover is screwed on like a union nut. The locking ring 6 thus comprises the can head 4 and gives it greater stability.

The can neck is tubular and exposes itself the two half shells 5a and 5b together. The tubular The can neck is divided into two, as it were, in the longitudinal direction of the axis. According to a preferred embodiment, the Half shells 5a and 5b can be plugged together. There are push buttons 15a / 15b, 16a / 16b, 17a / 17b, 18a / 18b provided. So that Can neck attached to the can head 4 are on the top Tabs 13a, 13b provided at the end of the can neck. This have noses on the can head 4 for this purpose provided projections 14 can snap. The inside diameter of the tubular can neck is so large that he can take the union nut 10. At the bottom it narrows so far that the outer tube during assembly 2 is pinched. The mentioned narrowing does not need mandatory to be visible from the outside. A purely inside In principle it is enough.

Fig. 2a-e shows the box in the assembled state. Fig. 2a shows a front view of the inventive device. It goes without saying that the pipeline (outer pipe 2), the can neck (half shells 5a, 5b) and the can head (in Fig. 2a hidden) are under plaster. It's just that Lock ring 6 and the opening 9 for connecting the Flush-mounted fitting to see. On its front, the Locking ring 6 recesses 19 so that it with a suitable tool (e.g. plastic pipe with appropriate Studs at the end) can be screwed tight. The wells are preferably distributed regularly along the circumference.

The opening 9 of the angle tube piece housed in the can 3 is e.g. B. equipped with a thread in which the flush-mounted fitting can be screwed in. Of course, a different type of pressure density can also be used Connection for connecting the valve may be provided.

Fig. 2d shows a section A-A through the can neck. At first is the water-bearing inner tube 1. This is from one Surround outer tube 2, which on the one hand, the inner tube 1st protects and on the other hand noise insulation (flow noises) brings with it. The whole thing is enclosed by the can neck with its two half shells 5a, 5b, which by suitable Connection means (push buttons 15a, 15b and 18a, 18b) be held together.

Fig. 2b shows the device in a longitudinal section perpendicular to the wall surface. The outer tube 2 is from the can neck held with its narrowed end. Typically the outer tube has 2 cross ribs 24.1, 24.2, 24.3 and cross grooves 25.1, 25.2, 25.3. To prevent the outer tube 2 can slide down from the neck of the can the latter at its narrowed end with suitable circumferential ribs 26.1, 26.2. These engage in the transverse grooves 25.1 and 25.2. It should be noted that the can neck in the Assembled state therefore not via the outer tube is movable. As a result, it is definitely necessary the connection between inner tube 1 and angled tube piece 3 to connect to each other before attaching the half shells 5a, 5b, so the half-shells are only around the pipeline have to be put around.

As mentioned, the angle tube piece 3 is fixed in the can head 4. For this purpose there is a rib on the angle tube section 3 12 provided, which in the inside of the rear wall of the Can head 4 provided bracket 20 fits. So the rib 12 remains in the holder 20, these two elements preferably designed in a dovetail-shaped manner.

The stop flanges 11 at the front end of the tube extension 21 fits positively into the can head 4. The pipe socket 21 is centered by it. In addition, the stop flange 11 is like this arranged near the front end of the pipe socket 21 that by screwing on the locking ring 6, which in turn the tubular extension 21 at its front end form-fitting includes an axial force on the tube extension 21st can be exercised in the direction of the bracket 20. In the end So the angle tube piece is both through the bracket 20 and the locking ring 6 held in the can head.

2c shows a section through the device according to the invention parallel to the wall surface (section C-C). It is clearly recognizable that the cylindrical can head 4 encloses the tubular extension 21 in an arc. The cross section The arch formed closes an angle of more than 180 °. Because of the positively fitted stop flanges 11 is the tube extension 21 without help the locking ring 6 centered in the can head. The stronger the can head 4 comprises the tube extension 21 in terms of angle, the more stable this part of the can is. The recess 23 in the jacket of the can head 4 must of course in any case at least as large as the diameter of the tube extension 22 be so that the angle tube piece 3 can be inserted from the front is. 2a-e it can clearly be seen that the Pipe extension 22 represents a narrowing in a certain sense: Both the union nut 10 and the pipe socket 21 with its stop flanges 11 have a larger one Diameter than the pipe neck 22. If the recess 23 in Jacket head 4 is designed sufficiently tight, then So can the elbow pipe 3 with attached can neck (even if the locking ring 6 has been removed) not be pulled out of the can. Rather, it is only at removed can neck inserted from the front.

Fig. 3 shows an axial section through a particularly preferred Embodiment of the can neck. There are two half shells 27a, 27b with a hinge 28 captive to one another connected. With one or more snap locks 29a, 29b, the half-shells 27a, 27b can be closed. The hinge 28 is preferably thin Plastic skin formed, which can be easily bent. There the can neck does not have to be opened often, one is enough simple and cheap hinge construction.

The two assembly methods are described below, which are made possible by the device according to the invention.

First, the assembly process will be described at which the angle tube piece 3 inserted from the front into the box becomes. It is assumed that where the flush-mounted fitting is a slot in the wall for the tube and a cavity for the can have been milled are. It is also believed that the pipeline already has been laid in the wall.

First, the can head 4 is now in the milled slot attached to the wall in a suitable place. So the situation the fitting to be installed over plaster. The can neck (Half-shells 5a, 5b) and the locking ring 6 was previously approved. Likewise is the angle tube piece 3 has been removed.

Next, inner tube 1 and outer tube 2 are set to the desired one Cut back length. The flexible pipe is for this purpose perpendicular to the wall surface from the Slot bent out. So you don't work in a tight spot of the wall slot.

Then the elbow pipe piece is at the correctly cut pipe end 3 mounted. This also happens outside the slot. The water pressure-resistant connection is by itself known clamp ring closure, of which the union nut 10 is shown in the figures. For a good connection to be able to guarantee, the union nut 10 be tightened with considerable effort. There as I said, this assembly step on the one from the wall slot bent inner tube 1 takes place, the tube extension 21st e.g. B. with large pliers or one in the front Opening of the angled pipe section screwed pipe section are held while the union nut 10 with a Wrench is tightened. The artisan has thus free hand and is not due to the narrowness of the wall slot with special needs.

Now the connected angle tube piece 3 in the Wall recess attached can head 4 inserted from the front. Since the inner tube has been cut to length, this is necessary Inner tube 1 in outer tube 2 is not displaced in the axial direction to become, as is the case with the very old assembly technology was inevitable. When inserted, the rib 12 engages in the Bracket 20 a. The stop flanges 11 center, as already said the pipe socket 21 in the can head 4. The pipe socket 22 lies in the corresponding recess of the can head 4th

Now the locking ring 6 is screwed onto the can head 4. Since the stop flanges 11 are preferably small little protrudes beyond the front end of the can head 4, becomes the angle tube piece when screwing the locking ring 6 3 pushed backwards. It is therefore between the can head 4 and locking ring 6 clamped. It glows a that because of this clamping effect, the rib 12 in the holder 20 is held (even if these two elements are not designed to lock) and thereby twisting of the angled tube piece around the axis of the tube extension 21 prevented becomes.

Now the two half shells 5a, 5b around the pipeline and the lower end of the tubular extension 22 placed and under Use of the closure means (15a / b, 16a / b, 17a / b, 18a / b) connected with each other. The inside are arranged Circulating ribs 26.1 and 26.2 in corresponding grooves 25.1 and 25.2 of the outer tube 2 pressed. Under use the tabs 13a, 13b and the corresponding protrusions 14 finally the assembled can neck on the can head 4 attached. The can is now fully assembled. Well now only the wall slot has to be walled up or plastered, the box the angle tube piece 3 and its connection (Union nut 10) to the inner tube 1 against contamination protects.

The second type of installation described below is special then an advantage if the wall connections in one large wall recess are to be attached, which have a lot of space for Fiddles free.

As in the case explained above, the can head 4 is first fixed in the appropriate place in the wall recess. In this step, the angle tube piece 3 is preferably located already in the can head 4. The can head 4 with the inserted angle tube piece 3 and the screwed lock ring So 6 can be treated as one part. This has the advantage that not a single one of them can be lost.

Now the inner tube 1 and the outer tube 2 are on the cut back to the correct length. Then the cut to length Inner tube 1 with the help of the clamping ring lock (union nut 10) on the angled pipe section already installed in the wall recess 3 connected. Holding the elbow pipe piece 3 with pliers is not necessary in the present case, since it is clamped in box 4 and directly on the structure or by means of brackets respectively. Holding iron is fixed. It it goes without saying that screwing the union nut 10 has to be done with the necessary care. Because if that Attachment of the can head 4 in the wall recess with respect of the torque used to screw the union nut tight 10 is too low, then the can head can be torn out of its anchorage.

Finally, the can neck, as described above, appropriate. The difference between the two types of installation lies in the fact that in the first the angle tube piece outside and with the second inside the wall protection resp. the wall recess connected to the inner tube becomes.

Basically, it is advantageous if the angle tube piece 3 e.g. B. in the event of a defect or a leaky connection with the inner tube or when replacing the inner tube itself can be. For thick pipes (e.g. 20 mm diameter and more) it is inevitable that part of the To sharpen the wall. However, the pipe should be on one if possible short length must be exposed. This is at the invention thereby ensures that the can neck can be dismantled is formed and not pushed back over the outer tube 2 must be accessible so that the union nut 10 becomes. Since it is not in such a repair it is desirable that the can head 4 itself detached from the wall it is a particular advantage of the invention, that the new pipe elbow 3 from the front into the can head 4 can be inserted and fixed therein (locking ring 6) and at the same time the inner tube 1 without difficulty to the already pipe elbow 3 fixed in the socket head 4 connected can be. Despite the flexibility of the pipeline, it is enough not to bend it forward, if it is only sharpened to a length of 5-10 cm. Much more must be sharpened 20 and more cm so that the new pipe extension piece comfortably outside the wall connected to the pipe and can be inserted from the front. Also in the case of repairs, the two-sided installation option is effective according to the invention advantageously.

At this point it should be noted that it is for the invention it is not essential that the inner and outer tubes are flexible, d. H. are easily bendable. The outer tube can, for. B. quite be relatively rigid.

4a-c shows a can with a snap ring and a Internal thread for a locking ring 33 equipped is. In the present example, the can neck 30 is from below pushed into the can head 31. That means with the lower opening of the can head 31 encloses the can neck 30, the outside diameter of which is somewhat smaller is measured. The angle tube piece 3 is, as shown in the Fig. 2 described, fixed in the can head 31. That is, the on the axial continuation of the tube extension 21 on the back of the angle tube piece 3 provided rib 12 is in a bracket 20, which on the inside of the can head 31st is molded, fixed. The angle tube piece 3 due to the stop flange provided on the tube extension 21 11 engaging locking ring 33 backwards into the holder 20 pressed.

In contrast to the embodiment shown in FIG. 2 here the locking ring 33 is screwed into the socket head 31. The can head 31 has a front face suitable thread.

As already explained with reference to FIGS. 1 and 2, the can head has 31 a recess 23. Through this, the angle tube piece 3 can be removed to the front. In the present In the exemplary embodiment, a snap ring 32 is now provided, the front opening of the can head 31 from the outside includes. In the area of the recess 23 of the can head 31 the snap ring 32 has a thread extension 34 on the one hand and on the other hand a housing cover filling the recess 23 on. While the can head 31 in the present example about 300 ° of the internal thread for the locking ring 33 offers, the thread extension 34 covers the remaining part from about 60 °. As already mentioned, the can head 31 covers preferably at least 180 ° of the internal thread. It is but also possible with a smaller angle component get along with the can head because the snap ring 32 always covers the remaining angular portion.

5a-c illustrates a preferred type of fixation an angle tube piece 44 in a can head according to the invention 35. The aim of this fixation is to ensure that the assembly forces acting as efficiently as possible on the anchorage of the Transfer can head. From the analysis of the occurring Forces and torques result in the intersection of the Axis of the horizontal tube extension 37 with that of vertical pipe neck 36 of the angled pipe piece 44 the occurring Forces are best intercepted and transferred can. It is therefore advantageous if as close as possible this center provides means for absorbing the forces are.

According to the present embodiment, therefore, after forward pipe extension 37 and as close as possible the axis of the vertical tube extension 36 two flanges 38a, 38b attached. These are in suitable abutments 41a, 41b, which are molded on the inside of the can head 35, in a form-fitting manner captured. A locking ring 39 is designed that in the screwed-in position the flanges 38a, 38b in the abutments 41a, 41b. This allows both in the axis of the tube extension 37 and in the axis of the tubular extension 36 acting torques will.

Ears 43a, 43b are formed on the outside of the can head 35. she lie in the same plane as the flanges 38a, 38b. The ears 43a, 43b are provided with bores 42a, 42b, so that the can head z. B. on a holding iron or the wall itself can be screwed tight. Anchored in this way Angled tube piece 44 is also the one when tightening the Union nut 10 (for connecting the inner tube 1) survive the onset of force.

Analogous to the exemplary embodiment according to FIG. 4, an over the front open end of the can head 35 more slip Snap ring 40 provided. The union nut also protrudes 10 down out of the can head 35.

6a-f is now to be a particularly preferred one Embodiment of the can neck are described. The can head can be according to any of the foregoing Examples are executed. He can completely be trained differently, d. H. he doesn't necessarily need to be openable to the front.

The can neck 45 consists essentially of two half-shells 46a, 46b. Its inside diameter is typical same size as that of the can head 4 on its lower The End. The can neck 45 is formed by means of two suitably designed Tabs 50a, 50b on a circumferential projection 49 the can head 4 attached. The projection 49 is on the outside molded at the lower end of the can head 4. The tabs 50a, 50b are hook-shaped and have a sufficient elasticity to be pushed over the projection 49 and cling to it to be able to.

The can neck 45 narrows at its lower end (narrowing 47a, 47b). On the inside of the constrictions 47a, 47b are z. B. two circumferential ribs 48.1, 48.2. These ribs can be the outer tube 2, as related explained with Fig. 2, hold on.

The crux of the present embodiment is now that the two half-shells 46a, 46b through suitable plug fasteners are put together in this way that at least in the area of the constrictions 47a, 47b form two different internal cross sections can. For this purpose, e.g. B. two snap locks 51a, 51b are provided, which assume two latching positions can.

6 is z. B. molded onto the half-shell 46b, slid over an M-shaped tab can be. If the nose in one of the two throats of the M-shaped tab engages, then exists between the two Half shells 46a, 46b a gap 53. If the can neck then pressed together by radial pressure, then the nose jumps into the second throat of the M-shaped tab, whereby the can neck 45 closes tightly.

In the first latching position, the inner cross section is in the The area of the constrictions 47a, 47b at least so large that the fins 48.1, 48.2 over the finned outer tube 2 (cf. Fig. 2) are pushed more or less without hindrance can. But as soon as the snap locks 51a, 51b in the second position, the cross-section narrows in Area of constrictions 47a, 47b so strong that the ribs 48.1, 48.2 into the transverse grooves of the outer tube (see FIG. 2) intervention. The can neck can then with respect to the outer tube no longer be postponed.

According to a particularly preferred embodiment, the Connection means (tabs 50a, 50b, projection 49) formed so that they keep the can head and can neck together can if the can neck has the larger cross section (cf. Fig. 6d, e). This can be done e.g. B. thereby achieve that the tabs 50a, 50b so strong over the projection 49 grasp that the intervention even in the larger Cross section is not lost. In Fig. 6d this is done indicated a gap between can head 4 and can neck 45.

It is of course advantageous, if not essential, when the two half shells 46a, 46b are fully opened can be, so the can neck is not necessarily over the free end of the outer tube must be pushed, but can also be placed around it like a gripper. To this purpose is diametrical compared to the snap locks 51a, 51b a connecting the two half-shells 46a, 46b Hinge 52 is provided. This hinge 52 can, for. B. easy through a local reduction in the wall thickness of the can neck 45 can be realized. Of course applies to the hinge 52 already in connection with FIG. 3 Said.

Fig. 7a, b shows a can with a flexible neck and pliers-like Clamping member. A can head 54 and a can neck 55 are (e.g. according to one of the embodiments explained above) can be assembled into a can. At the can head 54 is a flange 56 is formed with one or more bores 57. The can head 54 can be attached to this flange 56 the desired place in a wall recess.

A snap ring 58 serves to close the can head 54 in a manner explained with reference to FIGS. 4a-c.

According to a further advantageous feature, the can neck 55 has Embodiment of the invention a section with a bellows 59 on. This enables the lower, the can head 54 opposite end of the can neck 55 with respect to the longitudinal axis 66 to bend. The lower end of the can neck 55 can be So for example in a 60 ° position with respect to Front opening axis 67 (which is generally perpendicular to the Wall surface is aligned).

Another special feature of the embodiment according to 7a and b is the clamping member 60, which is at the lower end of the Can neck 55 is attached. As shown in Fig. 7b (which the Section A-A according to FIG. 7a shows) can be taken it is essentially an open ring 62. Er is, for example, with reinforcing ribs running around the outside 63.1, 63.2. Are located at the ends of the ring 62 two tabs 65.1, 65.2. Are on the inside of the ring e.g. B. two transverse ribs 64.1, 64.2 formed. The ring 62 is connected to the can neck 55 via a connecting piece 61.

As can be seen from Fig. 7b, the annular clamping member with advantage a central angle that is of the order of magnitude of 270 °. The tabs 65.1, 65.2 protrude radially outward. Between the two tabs 65.1, 65.2 and annular part of the clamping member becomes an angle of 90 ° educated.

Due to its shape, the clamping member 60 can be under Bend apart overcoming an inherent spring force and slide over a ribbed protective tube. If the radial Pull apart the ring 62 provided tabs 65.1, 65.2 are released, then the ring 62 engages around it Protection tube like pliers, the ribs 64.1, 64.2 in corresponding Engage grooves in the protective tube. To this The protective tube is fixed in the direction of the longitudinal axis 66. It cannot slide out of the neck of the can.

The connecting piece 61 is designed so that it is on the one hand can absorb the tensile forces that occur without breaking, and on the other hand the radial mobility of the ring ends not affected.

According to a particularly preferred embodiment, the clamping member 60 hinge-like around the connecting piece 61 fold back. To the appropriate mobility it is sufficient to make the connecting piece 61 suitably thin (if necessary with an additional constriction). Typically the can parts including the clamping element molded from plastic.

8a-c is now the procedure for assembly of the can neck. The can neck 55 is in present case tubular. He is special cannot be opened along a longitudinal axis. This means, that it must be passed over a protective tube 68. That is, under certain conditions, it must run along the ribbed protective tube 68 to be displaceable. According to the present Example is this movability by folding back of the clamping member 60 around the connecting piece 61 reached (Fig. 8a).

As can be seen from Fig. 9, the clamping member is on the side on the protection tube 68. With its tabs 65.1, 65.2 it slides over the ribs 70 Clamping organ at an oblique (e.g. 45 °) angle to the Is the longitudinal axis of the protective tube 68, the ribs 70th "Grid through" under tabs 65.1 and 65.2. this will additionally favored by the not particularly acute angle between the tabs 65.1, 65.2 and the circular arc Inner wall of the clamping member.

After the clamping member 60 has been folded down to the side is, the protective tube 68 from below into the can neck 55 inserted (see FIG. 8b).

To fix the protective tube 68 in the can neck 55 finally the clamping member 60 by rotating it Connection piece 61 in a coaxial position with the protective tube 68 brought. The tabs 65.1, 65.2 are exploited the radial elasticity of the annular clamping member pushed over the diameter of the protective tube 68. The transverse ribs 64.1, 64.2 (see FIGS. 7a, b) snap into grooves of the protective tube 68 a. The can neck 55 is now on Protective tube 68 clamped immovably. The connection can can only be solved in that the clamping member by Press the tabs 65.1, 65.2 open radially becomes.

Then the can neck 55 with two fastening tabs (of which in Figures 8a-c due to the perspective chosen only the one with the reference number 69 can be seen) on Can head 54 are snapped into place.

Another preferred embodiment is intended to be shown in FIG the invention will be explained. These are a so-called lightweight wall box. Such a can is so in a lightweight wall is used that it on the visible side is flush and protrudes from the rear.

As can be seen from Fig. 10, it is a acute-angled arrangement, in which the axis of the domestic water supply pipe with the axis of the outflow Forms a 70 ° angle.

As with the embodiments described above a can neck 71 on a can head 72 z. B. by means of plug closure attachable. The division into can head 72 and Can neck 71 is selected such that a union nut 74 an angle tube piece 73 (which also has a 70 ° angle between inlet and outlet) from the can head 72 down resp. protrudes diagonally to the rear when the Can neck 71 is removed. The pipe neck pointing forward 75 (for connecting a fitting) has a length that is in corresponds approximately to the thickness of the lightweight wall.

The pipe extension 76 pointing obliquely downwards already has this mentioned clamping ring closure for clamping a Plastic pipe.

The angle tube piece 73 is in the can head 72 with screws 77.1, 77.2 screwed from the visible side of the lightweight wall. The screws 77.1, 77.2 sit between the pipe socket 75 and an approach 81 of the can head which surrounds this 72.

Outside on the z. B. tubular extension 81 sits slidably a sleeve 80. This protrudes from the front Mounting flange 79 radially outwards. Due to the movability the sleeve 80 on the neck 81 can Use a can for different wall thicknesses.

At the rear end of the neck 81, the can head 72 has one Mounting flange 78 on. This can be on the Screw the back of the lightweight wall tight. The sleeve 80 is from the visible side of the lightweight wall onto shoulder 81 postponed. It also has holes for attaching it provided on the front of the lightweight wall. The The lightweight wall is sandwiched between the rear, Fastening flange 78 formed on the can head 72 and the front, slidably mounted on the can head 72 Mounting flange 79 clamped. This leads to a good fixation of the can.

According to one, the can neck 71 is already detailed above described inventive variant bendable. It has a first and a second rigid section 82 resp. 83, and an interposed flexible Section 84. At the bottom of the rigid section 83 is a clamping member 85, which is also has already been described above. The can neck 71 including the clamping member 85 is made in one piece from plastic educated. The flexible section 84 acquires its property e.g. B. in that the wall thickness compared to remaining sections is reduced and that the wall bellows is curled.

A double box is shown in FIGS. 11a, b. On a can head 86 two can necks 87.1, 87.2 can be fastened. The tin can also be opened from the front. For this purpose is a cover 97 can be fastened with a screw 94 to the rest of the can (Hole 95 in the rear part of the can head 86). With the screw 94 is also a connector 90 fixed in the can head 86. The connector 90 has for this purpose a bore between one Valve connection piece 91 and the two line connections (see reference numeral 92).

Also accessible from the front and from below Embodiment protrude the union nuts (see reference 93), the part of the clamping ring closure for fastening the water pipes are down from the Can head 86 out when the two can necks 87.1, 87.2 are removed.

The can necks are formed as in Fig. 10, i. H. she are at least piece by piece flexible and have at the bottom a clamping member 96.1, 96.2 for clamping the protective tubes.

For fastening the socket head in a wall recess a fastening plate 88 is formed thereon. This is essentially flush with the back of the can and points e.g. B. three holes 89.1, 89.2, 89.3 for screws.

The invention is of course not limited to those based on of the figures illustrated embodiments. Variations the structural details are well within the scope of the invention.

So z. B. can neck and can head are designed so that they are in the manner of a bayonet catch with each other get connected. There is also a screw cap conceivable. In any case, it is advantageous if the Can neck without special tools, d. H. by hand, on the can head can be attached.

There are also a large number of possible variations when fixing the pipe elbow in the can head. Instead of a dovetail-shaped bracket at the rear end the can head 4 can also have recesses in the stop flanges 11 be provided in the appropriate one on the inside of the can head 4 engage the nubs in a form-fitting manner. Also through such interlocking elements can prevent the pipe elbow from twisting.

The pipe elbow itself can, for. B. also a simple elbow be at one end with a suitable clamping ring closure and on the other with a thread (for connecting a flush-mounted fitting). In general is a pipe elbow for the purposes of the invention a connector that is a pipe with a fitting or another pipe connects.

Instead of a single pipe, two (or more) can be provided for connection (e.g. with a Loop system). In this case (i.e. with a so-called Double can), the can neck must be designed with two tubes. Of the Can head must of course be widened accordingly, so that enough space remains below for the pipe connections. Of course, two individual tubular can also be placed on the can head Can necks can be connected. The angle tube piece is then z. B. U-shaped, the two ends the U-shape to the ring system installed in the wall be connected. In the center of the bow of the U-shape is a Pipe extension open at the front for connecting the plaster fitting to be provided. When finally the angle tube piece Is T-shaped, has the can head two diametrically opposite, removable can necks. in the The scope of the invention is therefore each under the angle tube piece Fitting to understand that as an intermediate piece between one or more concealed pipes and one or more Plaster fittings are suitable.

It is clear that the different types of cans are independent can be formed from the type of can neck. In particular, the can necks can in principle be combined can be used optionally with each can head shown.

A typical application of the invention is sanitary Investments. But also with heating systems or fuel supply systems the invention can have its beneficial effects unfold.

In summary, it can be stated that the inventive Furnishing is very versatile and also at various building standards can be installed easily.

Claims (17)

1. Device as a connection between at least one flexible conduit laid under plaster and a fitting to be arranged over plaster, comprising a casing and an elbow piece that can be placed in the casing, the casing having a casing head (54) and at least one casing neck (55), the at least one casing neck (55) surrounding both the connected end of the elbow piece and a portion of at least one conduit connected to the elbow piece, characterised in that the casing neck (55) is constructed to be flexible (59).
2. Device according to claim 1, characterised in that, to obtain the flexibility, a bellows-like portion (59) is formed on the casing neck (55).
3. Device, especially according to one of claims 1 and 2, characterised in that the casing neck (55) has at its lower end remote from the casing head (54) a pincer-like clamping element (60) for clamping the outer pipe (68).
4. Device according to claim 3, characterised in that the clamping element (60) is constructed in the manner of a ring (62) that is open at one side and that is radially resilient owing to its shape.
5. Device according to claim 4, characterised in that the clamping element (60) has on the inside at least two transverse ribs (64.1, 64.2) for the purpose of fixing a ribbed outer pipe (68), and the clamping element (60) is fastened to the casing neck (55) by means of a transition piece (61) that is movable preferably in the manner of hinge.
6. Device according to any one of claims 1 to 5, wherein, with a view to simple mounting of the elbow piece (3) on the at least one conduit (1), the casing is openable at the front in such a manner that the elbow piece (3) that has been removed from the casing and connected to the end of the at least one conduit (1) can be inserted into the casing (4) from the front, characterised in that, in order to provide an additional, alternative mounting possibility, the casing (4, 5a, 5b) can be separated into a casing head (4) and at least one casing neck (5a, 5b) which can be fastened to the casing neck (4), in such a manner that the elbow piece (3), when inserted into the casing head (4) and fastened therein, projects out of the casing head (4) by its end (10) that is to be connected to the at least one conduit (1), in such a manner that the at least one conduit (1) cut to the correct length can be connected to that end (10) without it being necessary to remove the elbow piece (3) from the casing head, and the at least one casing neck (5a, 5b) which is subsequently fastened to the casing head (4) surrounds both the connected end (22) of the elbow piece (3) and a portion of the connected at least one conduit (1).
7. Device according to any one of claims 1 to 6, characterised in that there is provided at one end (22) of the elbow piece (3) for connecting the conduit (1) a clamping ring device having a union nut (10), and the casing is divided into casing head (4) and casing neck (5a, 5b) in such a manner that the elbow piece (3) projects out of the casing head (4) by the union nut (10).
8. Device according to any one of claims 1 to 7, characterised in that the casing head (5a, 5b) is constructed in such a manner that an outer pipe (2) of the conduit (1, 2) can be clamped so that the outer pipe (2) cannot slide out of the casing neck (5a, 5b).
9. Device according to any one of claims 1 to 8, characterised in that the casing neck (5a, 5b) is tubular and is composed of two half-shells (5a and 5b) that can be joined together in a form-fitting manner using connection means (15 a/b, 16a/b, 17a/b, 18a/b).
10. Device according to claim 9, characterised in that the half-shells (5a, 5b) are equipped with plug-inclosure-like connection means (13a, 13b, 14), so that the casing neck (5a, 5b) can be fastened to the casing head (4) by hand and without the aid of tools.
11. Device according to claim 9 or 10, characterised in that the half-shells (5a, 5b) are inseparably joined to each other at one side in the manner of a hinge.
12. Device according to any one of claims 1 to 11, characterised in that the casing head (4) is provided with a screw-thread (7) at its end that is open towards the front, and the elbow piece (3) can be fixed in the casing head (4) by a locking ring (6) that can be screwed on from the front.
13. Device according to any one of claims 1 to 12, characterised in that the casing head (4) is provided in its interior with at least one holder which is engaged in a form-fitting manner by a rib-like projection (12) of the elbow piece (3), so that turning of the elbow piece (3) during mounting is prevented.
14. Device preferably according to any one of claims 9 to 13, characterised in that, for joining the half-shells (46a, 46b) of the casing neck (45), plug-in closure means (51a, 51b) having at least two locking positions are provided, the cross-section of the casing neck (45) being sufficiently large in the first position for the casing neck (45) to be pushed over the outer pipe (2) and sufficiently small in the second position for the outer pipe (2) to be clamped.
15. Device according to claims 10 and 14, characterised in that the connection means (50a, 50b, 49) for fastening the casing neck (45) to the casing head (4) are so constructed that the casing neck (45) can be fastened to the casing head (4) even when the plug-in closure means (51a, 51b) have locked in the first position.
16. Casing for a device according to any one of claims 1 to 15 comprising a casing head (54) and at least one casing neck (55), characterised in that the at least one casing neck (55) is constructed to be flexible (59).
17. Casing according to claim 16, characterised in that it is constructed as a double casing.

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