EP2998449B1 - Bathroom drain fitting - Google Patents

Description

The invention relates to a sanitary outlet fitting with a fitting body whose body interior opens into a water spout, with an intermediate holder which can be fastened in the water outlet and with a sanitary insert part, which is insertable into the open downstream end side of the intermediate holder, wherein the intermediate holder on the inflow side has a connecting piece, which is connected to the water hose or connectable, and wherein projects at the inflow-side end face of the intermediate holder at least one web or wall, which web or wall on at least one counter wall or at least one counterpart in the valve body form fit or frictionally engages.

Sanitary discharge units, such as jet regulators, are usually releasably secured in the outlet of a sanitary cast iron fitting, for example by means of screw, clamp or snap-in connections. This requires a correspondingly machined casting fitting, which is to be provided for example with a suitable thread or otherwise corresponding fastening devices. Thus fall so far in the production of sanitary cast iron fittings Machining steps, such as the milling of a thread or a circumferential groove, or other fastening devices for inserting the sanitary outlet unit are required. Additional processing steps represent a high work and cost. Furthermore, in the manufacturing process of cast fittings and voids or the like casting defects occur, which lead to problems in the subsequent machining further processing or surface treatment of the cast fittings. Such faulty outlet fittings may under certain circumstances no longer be used. If the water jet is to be passed through a hygienic water supply without direct contact with the cast iron fitting through it, via a separate pipe provided inside the cast iron fitting, it is likewise necessary to use cast iron fittings which have been machined accordingly.

From the WO 2004/038112 A1 already a sanitary outlet fitting is known which has a tubular fitting body whose tube interior opens into a, water outlet. The previously known outlet fitting has a pot-shaped or sleeve-shaped intermediate holder, which is held by pressing, gluing, snap, Verkrallen or wedging in the water outlet of the fitting body. The prior art outlet fitting is associated with a sanitary insert part, which can be inserted into the open-ended outflow-side end face of the intermediate holder and detachably fixable therein. The insert part can be designed as a jet regulator, flow regulator, non-return valve and / or attachment screen. In order to seal the intermediate holder in the water outlet and to prevent unwanted leakage currents between the intermediate holder and the fitting body is in the WO 2004/038112 A1 suggested that an O-ring seal, a flat gasket or other additional seals, or provided to the intermediate holder molded seals or that a seal by the connecting means, such as the adhesive used in the bonding, takes place.

Since the fitting body is regularly formed as a metal casting, since such castings usually have voids, in the area of which the valve can be sealed less well, there is a risk that form over time unwanted leakage currents between the intermediate holder and the fitting body. However, if the sealing is done by elastic sealing rings or by the adhesive layer, the materials used must be food grade, which can increase the production cost even further.

From the US 2010/071778 A1 already a sanitary outlet fitting of the type mentioned above is already known, which has a fitting body whose body interior opens into a water spout. The known outlet fitting has an intermediate holder which can be fastened in the water outlet. The previously known outlet fitting also has a sanitary insert part which can be inserted into the open-ended outflow-side end face of the intermediate holder, wherein the intermediate holder has a connecting piece on the inflow side, which is connected to the water hose, and wherein at least one web protrudes on the inflow-side end face of the intermediate holder Web on at least one, the water outlet of the known outlet fitting delimiting counter wall engages positively. This web has at its free web end to an outwardly projecting locking cam, which engages in the use position in a latching opening on the opposite wall. This latching opening is formed open to the outside, so that by elastic impressions of the locking cam in the body interior between the the intermediate holder and the outlet fitting provided latching connection can be solved. However, the latching connection between the intermediate holder and the outlet fitting requires a comparatively thin-walled outlet fitting, so that the locking cam with a relatively short compression travel can still be brought out of engagement from the detent opening in a simple manner. Since the detent opening must be formed open and thus remains visible on the circumference of the outlet fitting, a formgestalterische restriction is associated with such a locking connection.

From the WO 2009/146410 A1 One already knows a sanitary outlet fitting whose dashboard body is divided in the longitudinal direction and has a cup-shaped upper body part and a trough-shaped lower body part which can be connected thereto and which delimit a body interior. In the open-ended outlet-side end side of the fitting body, an intermediate holder is used, which is connected on the inflow side with a, guided in the body interior connecting piece. However, the two-part design of the fitting body limits the design options in the design of such outlet fittings. But above all, the design, manufacture and installation of this known outlet fitting is associated with considerable effort.

From the WO 2008/094250 A1 One already knows an outlet fitting, the outlet body is also in the region of the outlet pipe also divided into two longitudinally and therefore has comparable disadvantages.

There is therefore in particular the task of creating an outlet fitting of the type mentioned, the characterized by a reduced production cost.

The achievement of this object is in the outlet fitting of the type mentioned in particular that at least two mutually associated and spaced apart webs or walls or counter-ridges or Gegenwandungen are provided on the intermediate holder or the fitting body, which limit an intermediate or insertion space in which Intermediate or insertion a counterpart web or a counter wall or a web or a wall of the other component is positively or frictionally fixable.

The outlet fitting according to the invention has a fitting body, whose body interior opens into a water outlet. The outlet fitting according to the invention has an intermediate holder which can be fastened in the water outlet. In the open-formed downstream end face of the intermediate holder, a sanitary insert part is used, which may be designed as a jet regulator, flow rate regulator or, for example, as a front screen or may have such jet-guiding or jet-forming components. The intermediate holder has a connecting piece on the inflow side, which is connected to a, in the tube interior of the fitting body out water hose. The water flowing through the water hose can flow into the intermediate holder via the connecting piece and, after flowing through the insert part located therein, emerge as a homogenous, pearly-soft, non-spraying and optionally also flow-limited water jet. Since the water is no longer directly through the body interior of the fitting body, but instead flows through the water hose guided therein, is one for Avoiding unwanted creepage currents or even leaks needed and in particular a machining of the outlet fitting itself no longer mandatory. According to the invention it is provided that at least two mutually associated and spaced webs or walls or counter-ridges or Gegenwandungen are provided on the intermediate holder or the fitting body, which limit an intermediate or insertion space, in which intermediate or insertion a wall or a web or a wall of the each other components form or frictionally fixable. Since seals and sealing adhesive layers in the annular zone between the intermediate holder on the one hand and the fitting body on the other hand are dispensable, the production cost of the outlet fitting according to the invention is significantly reduced.

The provided in the outlet fitting according to the intermediate holder can be combined with jet regulators or other sanitary outlet units, which can also be used and fixed in unprocessed sanitary outlet fittings. Labor and cost-intensive processing steps in the production and further processing, in particular of cast fittings thus eliminated. The intermediate holder is connected on the inflow side with a guided in the body interior of the fitting body water hose This water hose is a particularly hygienic water flow, which avoids any direct contact of the water to the sanitary outlet fitting.

In order to carry out repairs or maintenance even when needed in the body interior of the fitting body of a sanitary outlet fitting, it is advantageous if the intermediate holder in the water outlet is releasably fastened. After the intermediate holder has been dissolved in the water outlet, repair and maintenance work in the body interior of the fitting body are possible without the at least provisionally withdrawn from the outlet fitting intermediate holder in the way.

A particularly advantageous embodiment according to the invention provides that the outlet fitting is made without machining at least in the, the intermediate holder receiving portion of its water outlet. In this case, the outlet fitting, for example, be made of sheet metal.

In order to be able to remove the insert part held in the outflow-side end face of the intermediate holder from there and expose it, for example, for descaling or for other maintenance work, it is advantageous if the sanitary insert part can be detachably fixed in the downstream end face of the intermediate holder.

In order to securely, tightly and firmly connect the intermediate holder with the insert in the body interior of the outlet fitting, the intermediate holder on the inflow side a connecting piece, which is connected to the water hose.

In order to secure the intermediate holder sufficiently firmly in the water outlet of the fitting body, it is advantageous if the intermediate holder has at least one fastening means which is positively and / or frictionally connected to the fitting body connectable. Since the intermediate holder has at least one fastening means which allows a positive and / or frictional connection on the fitting body, the expense associated with the manufacture and assembly of the outlet fitting according to the invention is additionally reduced.

A particularly easy to produce and mount with little effort embodiment according to the invention provides that the sanitary insert is designed as Einsetzpatrone having a cartridge housing, and that the cartridge housing in the intermediate holder by means of a screw or Renkverbindung is releasably fastened. In this embodiment, the sanitary insert part can be inserted into the intermediate holder to be releasably fixed thereafter by means of a screw or bayonet connection.

In this case, a preferred embodiment, which can be produced with particularly little effort, provides that an outer thread is provided on the housing periphery of the cartridge housing, which external thread cooperates with an internal thread in the intermediate holder.

The flow-through insert part can serve to guide the water jet, to shape or limit. An advantageous embodiment according to the invention is therefore that the insertion part has a jet regulator and / or a flow rate regulator and preferably an inflow-side attachment screen. It can with the help of the sieve sieve in the water possibly carried Dirt particles are filtered out before the water flows out of the water outlet of the sanitary outlet fitting.

It may be expedient if at least one projection projecting onto at least one web or a wall or counterpart web or counter wall protrudes at least one retaining projection for abutment with the adjacent web or counter wall or web or wall. Such a retaining projection may be formed practically barb-like and cause the firm hold between the intermediate holder on the one hand and the water outlet delimiting edge region of the fitting body on the other.

In this case, a preferred embodiment according to the invention provides that projecting retaining projections are provided on the pairwise associated webs or walls or counter-webs or opposing walls respectively, in the intermediate or plug-in space.

In addition to the connection between the intermediate holder and fitting body ensuring webs or walls of the intermediate holder can be expanded by inserting the sanitary insert part at least in a partial area such that the intermediate holder is then held form-fitting or frictionally engaged in the water outlet.

In this case, a preferred embodiment, which is characterized by a secure function, provides that the intermediate holder has at its intermediate holder circumference at least one spring bar which is movable or rebound from a release position by inserting the sanitary insert part in a holding position, in which holding position of Spring bar engages behind a portion of the fitting body. In order that the at least one, provided on the intermediate holder spring bar can spring well into the release position and just as easily spring into the holding position, it is advantageous if the free spring bar end of the at least one spring bar is oriented in the insertion direction of the intermediate holder.

A particularly firm hold of the intermediate holder on the water outlet delimiting edge region of the fitting body is favored if projecting at the free spring bar end of the at least one spring bar a retaining cam or a retaining projection with which / the spring bar engages behind the water outlet delimiting inner peripheral edge region of the fitting body.

Further developments according to the invention will become apparent from the drawings in conjunction with the description and the claims. The invention will be described in more detail below with reference to preferred embodiments.

Fig. 1

eine in einem Längsschnitt dargestellte sanitäre Auslaufarmatur im Bereich ihres Wasserauslaufs, wobei im Wasserauslauf der sanitären Auslaufarmatur ein, einen Anschlussstutzen für einen Wasserschlauch aufweisender Zwischenhalter gehalten ist, in den ein sanitäres Einsetzteil eingesetzt werden kann,

Fig. 2

den in einem Detail-Längsschnitt dargestellten und in den Armaturenkorpus der Auslaufarmatur eingesetzten Zwischenhalter im Bereich einer reibschlüssigen Verbindung zwischen Zwischenhalter und Armaturenkorpus,

Fig. 3

die sanitäre Auslaufarmatur aus Figur 1 und 2 in einer auseinandergezogenen Einzelteildarstellung in Draufsicht auf ihre Bestandteile, und

Fig. 4

die Auslaufarmatur aus Figur 1 bis 3 in einer auseinandergezogenen Einzelteildarstellung in einer Unteransicht auf ihre wesentlichen Bestandteile,

It shows:

Fig. 1

a sanitary outlet fitting shown in a longitudinal section in the region of its water outlet, wherein in the water outlet of the sanitary outlet fitting a, a connection piece for a water hose exhibiting intermediate holder is held, in which a sanitary insert part can be used

Fig. 2

the intermediate holder shown in a detail longitudinal section and inserted into the fitting body of the outlet fitting in the region of a frictional connection between intermediate holder and fitting body,

Fig. 3

the sanitary outlet fitting off FIGS. 1 and 2 in an exploded single part view in plan view of its components, and

Fig. 4

the outlet fitting off Figure 1 to 3 in an exploded single part view in a bottom view on its essential components,

In the FIGS. 1 to 4 a sanitary outlet fitting 1 is shown. The outlet fitting 1 has a tubular fitting body 3, the tube interior 4 opens into a water outlet 5. In the water outlet 5 of the outlet fitting 1, an intermediate holder 2 can be fastened, which is designed cup-shaped here. In the open-formed downstream end face of the intermediate holder 2, a sanitary insert part 6 can be used, which may have a jet regulator and additionally or instead a flow rate regulator and preferably also an inflow-side attachment screen 7.

In the FIGS. 1 to 4 It can be seen that the intermediate holder 2 on the inflow side has a connecting piece 8 which is connected to a guided in the pipe interior 4 of the fitting body 3, but not shown here water hose. The tap water flowing through the water hose can flow into the intermediate holder 2 via the connection stub 8 and, after flowing through the insert 6 located therein, can flow out as a homogeneous, non-spraying, optionally percolating-soft and, if necessary, flow-limited water jet. Since the water is no longer the tube interior 4 directly, but instead the guided therein Water hose flows through, unwanted leakage currents and / or leaks at the outlet fitting 1 are not to be feared even if the fitting body 3, for example, produced as a metal casting should have voids in the region of the water outlet 5. Since sealing rings and sealing adhesive layers are dispensable in the annular zone between the intermediate holder 2 and the fitting body 3, the manufacturing cost of the outlet fitting 1 shown here is considerably reduced. Since the water outlet 5 of the fitting body is sealed by the intermediate holder 2 in its outer annular zone and since the intermediate holder 2 in the water outlet 5 is positively and / or frictionally fixed, the outlet fitting can optionally also be made of sheet metal.

From the FIGS. 1 and 3 It will be understood that the sanitary insert 6 is formed as an insert cartridge having a cartridge case. In this case, the cartridge housing of Einsetzpatrone 6 is secured in the intermediate holder 2 here by means of a screw connection. For this purpose, the insert part 6 has on the housing periphery of its cartridge housing an external thread 9, which external thread 9 cooperates with an internal thread 11 in the intermediate holder 2.

The intermediate holder 2 assigned to the outlet fitting 1 has at least one fastening means which is positively connected and additionally or instead also frictionally connected to the fitting body 3 or can be connected.

In the in the FIGS. 1 to 4 Armature design 1 shown as an example are on the inflow-side end face of the intermediate holder 2 mutually paired webs or walls 12, 13 are provided, which define an intermediate or insertion space 15 between them. In this interim or insertion space 15 is the associated and in the tube interior of the fitting body 4 in the direction of the water outlet 5 projecting counter-web or the protruding opposite wall 14 can be inserted and positively and / or frictionally fixed. At least on the at least one web or on the at least one wall 12, 13 of the intermediate holder 2, 20 or at least on the at least one counter-web or the at least one opposite wall 14 in the fitting body can protrude at least one barb-like holding projection 16, here, for example, as an elastically resilient holding web is designed. In the detail longitudinal section in FIG. 2 is clearly visible that at least two and preferably a plurality of spaced-apart in the insertion direction retaining projections 16 are provided, which create friction after pushing on the opposite wall 14 of these.

LIST OF REFERENCE NUMBERS

1

Outlet fitting (according to the FIGS. 1 to 4 )

2

Intermediate holder (according to the FIGS. 1 to 4 )

3

fittings body

4

Tube interior

5

water spout

6

insert

7

attachment screen

8th

spigot

9

external thread

11

inner thread

12

wall

13

wall

14

Gegenwandung

15

Intermediate or insertion space

16

retaining projection

Claims (13)

1. Sanitary outlet fitting (1) having a fitting body (3), the body interior (4) of which opens into a water outlet (5), with an intermediate holder (2) which (2) is fastenable in the water outlet (5), and with a sanitary insert (6) which is insertable into the end side of the intermediate holder (2), said end side being of open design and being on the outflow side, wherein, on the inflow side, the intermediate holder (2) has a connecting branch (8) which is connected to the water hose (1), and wherein at least one web or one wall (12, 13) protrudes on that end side of the intermediate holder (2) which is on the inflow side, which web or which wall (12, 13) acts in a form-fitting or frictional manner on at least one mating wall (14) or at least one mating web in the fitting body (3), characterized in that at least two webs or walls (12, 13), which are assigned to one another and are spaced apart from one another, or mating webs or mating walls are provided on the intermediate holder (2) or on the fitting body (3) and delimit an intermediate space or insertion space (15), in which intermediate space or insertion space (15) a mating web or a mating wall (14) or a web or a wall of the other component (3; 2) in each case is fixable in a form-fitting or frictional manner.
2. Outlet fitting according to Claim 1, characterized in that the water hose (1) is guided in the body interior (4) of the fitting body (3).
3. Outlet fitting according to Claim 1 or 2, characterized in that the outlet fitting (1) is produced without machining at least in that region of the water outlet thereof which receives the intermediate holder (2).
4. Outlet fitting according to one of Claims 1 to 3, characterized in that the intermediate holder (2) has at least one fastening means which is connectable in a form-fitting and/or frictional manner to the fitting body (3).
5. Outlet fitting according to one of Claims 1 to 4, characterized in that the sanitary insert (6) is designed as an insertable cartridge which has a cartridge housing, and in that the cartridge housing is fastenable releaseably in the intermediate holder (2) by means of a screw connection or bayonet connection.
6. Outlet fitting according to Claim 5, characterized in that an external thread (9) is provided on the housing circumference of the cartridge housing, which external thread (9) interacts with an internal thread (11) in the intermediate holder (2).
7. Outlet fitting according to one of Claims 1 to 6, characterized in that the insertable part (6) has a jet regulator and/or a flow regulator and preferably a sieve attachment (9) on the inflow side.
8. Outlet fitting according to one of Claims 1 to 7, characterized in that at least one retaining projection (16) protrudes on at least one web or one wall (12, 13) or mating web or mating wall, said retaining projection being determined for bearing against the adjacent mating web or adjacent wall (14) or web or wall.
9. Outlet fitting according to one of Claims 1 to 7, characterized in that retaining projections (16) protruding in each case into the intermediate space or insertion space are provided on the webs or walls (12, 13), which are assigned in pairs to one another, or mating webs or mating walls.
10. Outlet fitting according to one of Claims 1 to 9, characterized in that the intermediate holder (2) can be expanded at least in a partial region of the intermediate-holder circumference thereof, by insertion of the sanitary insert (6), in such a manner that the intermediate holder (2) is subsequently held in a form-fitting or frictional manner in the water outlet (5).
11. Outlet fitting according to one of Claims 1 to 10, characterized in that the intermediate holder circumference of the intermediate holder (2) has at least one spring web (17) which, by insertion of the sanitary insert (6), is moveable or reboundable from a release position into a retaining position, in which retaining position the spring web engages behind a partial region of the fitting body (3).
12. Outlet fitting according to Claim 11, characterized in that the free spring-web end of the at least one spring web is oriented in the insertion direction of the intermediate holder (2).
13. Outlet fitting according to one of Claims 1 to 12, characterized in that a retaining cam (19) or a retaining projection, with which the spring web engages behind the inner circumferential edge region of the fitting body (3), which inner circumferential edge region bounds the water outlet (5), protrudes at the free spring-web end of the at least one spring web.

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