EP2312065A1 - Telescopic water outlet - Google Patents

Abstract

The telescopic water outlet (1) has an interior pipe (2) formed as a through pipe and an external pipe (3) formed as a discharge pipe. The interior pipe carries an interior pipe head (10) having an annular flange (11) that acts on the external pipe in a displaceable manner at the end face region disposed in the external pipe. The interior pipe head has a flow opening (6) on the annular flange and the flow through opening (5) ending in the annular casing space (4) on the head circumference.

Description

The invention relates to a telescopic water outlet with an inner tube designed as a flow tube and an outer tube designed as an outflow tube, which surrounds the inner tube at a distance to form an annular jacket space.

From the EP 1 707 692 A1 a telescopic water outlet of the type mentioned is known, which has a telescopic by a stroke Ausflussrohrleitungssystem. The effluent piping system of the prior art water spout has a flow tube held on the body of the fitting and an outflow tube longitudinally movable with respect to the flow tube, one being an inner tube and the other an outer tube. The inner tube has a closed tube end and a radial passage in a distance corresponding to at least the stroke from the closed tube end. Through the radial passage, an interior of the inner tube is permanently connected to a jacket space of constant volume, which is limited by the inner tube and the outer tube. Because of the water flowing through Mantelraum when pulling apart or colliding the telescopic water outlet has a constant volume, flows - with closed, arranged in the valve body control cartridge - collision no water from a Wasserausflussöffnung the sanitary fitting and when pulling is neither air nor water or a solid in the Ausflussrohrleitungssystem through the Wasserausflussöffnung sucked. However, the maximum possible extension length of the known telescopic water outlet is always smaller than half the length of its nested Ausflussrohrleitungssystems. In the Ausflussrohrleitungssystem the prior art water spout no different hydraulic forces that would be able to move the spout, but may be an unwanted longitudinal movement of the spout set when the axis of the outflow direction and the direction of movement of the valve are parallel and therefore when Water outlet a recoil of the spout takes place. The out EP 1 707 692 A1 Previously known water outlet has a complex and only with considerable effort producible internal structure and is dependent on a structurally adapted fitting body, the water supply has to fit the Ausflussrohrleitungssystem. Since thus a subsequent installation of the known water outlet to an existing valve is not possible, the possible uses for the EP 1 707 692 A1 previously known water outlet additionally limited.

There is therefore a particular object to provide a water spout of the type mentioned, which can be produced with relatively little effort and avoids the disadvantages of the prior art, without sacrificing its merits.

An inventive solution to this problem is in the water outlet of the type mentioned in particular that the inner tube carries at its front end arranged in the outer tube an inner tube head with an inner tube on the inner circumference displaceably annular flange, and that the inner tube head at its annular flange at least one Has flow opening and at its head circumference at least one opening in the annular jacket space flow-through.

The inner tube of the water outlet according to the invention has, at its front end region arranged in the outer tube, an inner tube head which carries an annular flange, which displaceably engages the outer tube on the inner circumference. The outer tube is thus guided displaceably on the annular flange provided on the inner tube head. While at least one flow opening opening into the tube interior of the outer tube is provided on the annular flange of the inner tube head, the inner tube has at least one flow opening opening out in the annular jacket space at its head circumference. The comparatively easily produced inner tube head is able to close the inner tube at its front end region arranged in the outer tube and at the same time to create both the at least one flow opening opening in the annular jacket space and the flow opening provided between annular jacket space and outer tube interior.

In this case, the production cost is additionally reduced if the inner tube head can be produced as a separate and connectable to the inner tube component.

If the inner tube head is designed as a separate component that can be connected to the inner tube, the inner tube and optionally also the outer tube can be made of simple tube sections getting produced. In this case, the inner tube head is particularly easy stirnendseitig fixed to the inner tube when the inner tube head has a connectable to the inner tube connecting pin, which is sleeve-shaped and pushed onto the inner tube Stirnendbereich, or which is insertable into the tube interior of the inner tube Stirnendbereichs.

In this case, a preferred embodiment which limits a plurality of flow-through openings, provides that the connecting pin is crown-shaped with a plurality of distributed over the circumference of the connecting pin arranged and open towards the free end of the journal end flow-through.

In particular, if the water outlet according to the invention at the outlet end of its outer tube has a limited, for example by a jet regulator or a shower head or the like in the open outlet flow outlet end face, on the other hand, set different water pressures on the other hand, provided on the inner tube head ring flange in the annular space on the one hand and beyond this annular flange in the tube interior of the outer tube which lead to an undesirable relative displacement between inner tube and outer tube. A hydraulic force imbalance is further exacerbated if, for example, the standard provided jet regulator is inadvertently replaced with a jet regulator of another flow class or if the provided as attachment screen or as a jet disintegrator hole surfaces of the jet regulator calcify or otherwise pollute.

Another proposed solution of its own worthy protection therefore provides the telescopic water outlet of the type mentioned above, that a telescoping of the water outlet by means of a braking or blocking device can be delayed or prevented, which brake or blocking device can be activated by a pressure change in the annular jacket space and / or by changing the relative position of the inner and outer tubes.

According to this proposed solution, the water outlet according to the invention on a braking or blocking device, which is a telescoping of the water outlet and thus a relative movement between the inner and outer tube, i. delayed or even prevented a pushing together or a divergence of the outlet pipe system. Thus, this braking or blocking device can be activated by a pressure change in the annular jacket space and / or by a change in the relative position of the inner and outer tubes. Are the inner and outer tubes formed as circular pipe sections, any relative movement between the inner and outer tube and thus also a rotational movement is delayed or prevented by the braking or blocking device.

In this case, a preferred embodiment according to the invention provides that the braking or blocking device has at least one held on the inner or outer tube brake element by a change in pressure in the annular jacket space and / or by changing the relative position of the inner and outer tubes in the radial direction or Transverse direction is movable or deformable such that the at least one brake element acts on the inner tube or a standpipe rigidly connected to a valve body.

In order to achieve a sufficient braking effect with the aid of the at least one brake element and to activate the brake element, it is expedient if the at least one brake element with a frontal or peripheral oblique surface acts on a ramp, and if the brake element and the run-on slope assigned to it undergo a relative movement by a pressure change in the annular jacket space and / or by a change in the relative position of the inner and outer tubes, such that the braking element moves or deforms in the radial direction or in the transverse direction.

A preferred embodiment according to the invention provides that between the inner and outer tube, an annular brake piston is displaceably guided, which has at least one bevel on its outer or inner circumference. As soon as this brake piston undergoes a relative movement in the longitudinal direction of the outlet pipe system by an increase in pressure in the annular jacket space and / or by retraction of the inner pipe into the outer pipe, this longitudinal movement is converted by means of the ramp into a movement of the braking element in the radial direction or in the transverse direction.

In an axial or radial displacement of the outer tube by the user, for example caused by manual adjustment of the height or the circumferential position of the outlet part of the telescopic tube, the brake does not act in a pressureless state, which is easier to align by the user.

During operation, a manually applied relative movement between outer and inner tube is still possible, albeit with increased effort, since the braking effect resulting from the suppressed longitudinal movement between the outer tube and inner tube due to different pressures and effective areas, must be overcome.

However, the displacement force is limited, since at positively controlled displacement of the outer tube, that at least one braking element, although also on an inclined surface to Outside is pressed, but the radial force is ultimately limited by the friction and sliding conditions on the inner seal of the brake piston to the inner tube, so that from the time of sliding friction between the brake piston and inner tube no additional radial forces are transmitted to the standpipe.

The components of the braking or blocking device are connected to one another in a simple manner when the outer tube has at least one through opening which passes through a braking element, and if the brake element has on its facing the inner tube end or peripheral side which has a ramp on the brake piston acting inclined surface and with its opposite, outwardly facing end or peripheral side cooperates with a, the outer tube embracing standpipe. Thus, the at least one brake element is held in the insertion opening of the outer tube. With its facing the inner tube and designed as an inclined surface end or peripheral side, the brake element engages in the ramp on the brake piston, which is thereby slidably connected to the outer and the inner tube along the inclined surface and ramp. By a pressure change in the annular jacket space and / or by a change in the relative position of the inner and outer tubes of the brake piston is slightly moved in the longitudinal direction of the outlet pipe system. This longitudinal movement of the brake piston is transmitted from the ramp on the inclined surface of the at least one brake element, which thereby undergoes a movement in the radial direction or in the transverse direction to the standpipe. In this case, the at least one brake element engages the standpipe in such a way that a telescopability of the water outlet by means of the braking or blocking device can be delayed or prevented.

If the brake piston at the same time also forms the fitting end of the annular jacket space, it is advantageous if the brake piston is sealed relative to the inner tube or to the outer tube by means of at least one mechanical seal.

A particularly simple and reduced to only a few components embodiment provides that the brake element is circular and can be expanded in the radial direction by a pressure change in the annular jacket space and / or by changing the relative position of the inner and outer tubes.

In order to solve the braking effect as completely as possible and to perform a return movement of the braking element, it is advantageous if the brake element is made of elastic material.

A firm hold of the telescopic water outlet is favored when the outer tube is slidably guided in the standpipe.

Preferred embodiments provide that at the outlet end of the water outlet a shower head and / or a jet regulator is provided. With the aid of the telescopic water outlet, a shower spray can be individually adapted to the size of the user. The telescopic water outlet can also be used advantageously on a kitchen sink and can make there a flexible water hose dispensed as a tap outlet. If the kitchen shower designed as a so-called duo shower, which can be adjusted between a shower and a water jet function, it may be advantageous if the water outlet either between the showering function and the jet function formed by a jet regulator is switchable.

Usually arise in the two spray jet / spray different hydraulic resistances and thus different flow rates. The resulting differential pressure drop within the telescope unit would result in a system without braking device that due to a shift in the balance of power, the previously at rest system gets out of balance, which causes the telescopic spout automatically extends or contracts, which is undesirable. This is prevented by the inventively provided braking device.

Further features of the invention will become apparent from the following description of an embodiment of the invention in conjunction with the claims and the drawings. The individual features may be implemented individually or in combination in an embodiment according to the invention.

Fig. 1

einen teleskopierbaren Wasserauslauf in einem Längsschnitt, wobei der Wasserauslauf ein als Durchflussrohr ausgestaltetes Innenrohr sowie ein als Ausflussrohr vorgesehenes Außenrohr hat, zwischen denen eine Bremseinrichtung wirksam ist,

Fig. 2

einen Teilbereich des in Fig. 1 gezeigten Wasserauslaufs in einer Explosionsdarstellung,

Fig.3

in einem Längsschnitt das Innen- und das Außenrohr des in Fig. 1 und 2 gezeigten Wasserauslaufs im Bereich der Bremseinrichtung,

Fig. 4

das Innen- und das Außenrohr des in den Fig. 1 bis 3 wiedergegebenen Wasserauslaufs in einem Querschnitt in Schnittebene IV - IV aus Fig. 3,

Fig. 5

das Innenrohr des in Fig. 1 bis 4 gezeigten Wasserauslaufs in einer perspektivischen Teilansicht,

Fig. 6

das Innenrohr aus Fig. 5 in einem Längsschnitt,

Fig. 7

die beiden kreissegmentförmigen Bremselemente der für den Wasserauslauf gemäß den Fig. 1 bis 6 bestimmten Bremseinrichtung, und

Fig. 8

die in einer gemeinsamen Schnittebene in Längsrichtung etwa hälftig aufgeschnitten dargestellten Bremselemente aus Fig. 7.

It shows:

Fig. 1

a telescopic water outlet in a longitudinal section, wherein the water outlet has an inner tube designed as a flow tube and an outer tube provided as an outlet tube, between which a braking device is effective,

Fig. 2

a section of the in Fig. 1 shown water outlet in an exploded view,

Figure 3

in a longitudinal section, the inner and the outer tube of in Fig. 1 and 2 shown water outlet in the area of the braking device,

Fig. 4

the inner and the outer tube of the in Fig. 1 to 3 reproduced water spout in a cross section in section plane IV - IV Fig. 3 .

Fig. 5

the inner tube of the in Fig. 1 to 4 shown water spout in a partial perspective view,

Fig. 6

the inner tube off Fig. 5 in a longitudinal section,

Fig. 7

the two circular segment-shaped brake elements for the water outlet according to the Fig. 1 to 6 certain braking device, and

Fig. 8

the braking elements shown cut in half in the longitudinal direction in a common sectional plane from Fig. 7 ,

In the Fig. 1 to 8 a telescopic water outlet 1 is shown in its essential components, which has a designed as a flow tube inner tube 2 and provided as an outflow tube outer tube 3. The outer tube 3 surrounds the inner tube 2 at a distance to form a water-conducting annular jacket space 4. The inner tube 2 is closed at its front end region arranged in the outer tube 3 and has a plurality of throughflow openings 5 opening out in the annular jacket space 4 on the tube circumference side. The annular jacket space 4 is connected at its outlet end face via a plurality of flow openings 6 with the tube interior 7 of the outer tube 3; At its opposite end face of the annular jacket space 4 by one, the outer tube 3 and the inner tube 2 slidably acted upon mechanical seal 8, 9 sealed.

The inner tube 2 has at its, in the outer tube 3 arranged Stirnendbereich an inner tube head 10 with an outer tube 3 on the inner peripheral side slidably acting on the annular flange 11. This inner tube head has at its annular flange 11, the flow openings 6, while at its head circumference opening into the annular mantle space 4 through-flow openings 5 are provided. The outer tube 3 is thus guided displaceably on the annular flange 11 provided on the inner tube head 10. The comparatively easy to produce inner tube head 10 is able to close the inner tube 2 at its arranged in the outer tube 3 Stirnendbereich and at the same time to create both the at least one opening in the annular jacket 4 flow opening 5, as well as between the annular jacket space 4 and outer tube interior 7 provided flow opening 6 , Since the inner tube head 10 can optionally also be produced as a separate component which can be connected to the inner tube 2, the inner tube 2 and the outer tube 3 can be produced, for example, from simple tube sections which are preferably circular in cross section.

Since the water outlet 1 at the outlet end 12 of its outer tube 3 has a, for example, by a jet regulator 13 or a shower head or the like in the open outlet limited Auslaufstirnfläche, can this side of the provided on the inner tube head 10 Ringflansches 11 in the annular space 4 on the one hand and beyond this annular flange 11 in the tube interior 7 of the outer tube 3 on the other hand set different water pressures, which lead to an undesirable relative displacement between inner tube 2 and outer tube 3. A hydraulic power imbalance is still amplified, for example, if the standard provided jet regulator 13 is inadvertently replaced with a jet regulator of another flow class or if provided as a front screen or as a beam splitter hole surfaces of the jet regulator 13 calcify or otherwise pollute. The telescopic water outlet 1 shown here therefore has a braking or blocking device 14, by means of which the telescoping of the water outlet 1 can be delayed or prevented and in particular counteracts an unintentional retraction or extension of the water outlet 1. The braking or blocking device 14 is activated by an increase in pressure in the annular jacket space 4 and / or by retraction of the inner tube 2 in the outer tube 3.

The braking or blocking device 14 has at least one brake element 15, which is held here on the outer tube 3. By an increase in pressure in the annular jacket space 4 and / or by a retraction of the inner tube 2 in the outer tube 3, the brake element 15 is movable in the radial direction, that the at least one brake element 15, a rigidly connected to a fitting body and the outer tube 3 in sections encompassing standpipe 17th on the inner peripheral side acted upon by such a frictional engagement that both longitudinal movements and rotational movements between the inner and outer tubes 2, 3 are delayed or prevented. In this case, the at least one brake element 15 has a frontal or peripheral oblique surface 18, which acts on a ramp 19. This ramp 19 is disposed on an annular brake piston 20 which is guided in the annular jacket space 4 between the inner and outer tubes 2, 3 slidably. The brake piston 20 experiences by an increase in pressure in the annular jacket space 4 and / or by retraction of the inner tube 2 in the outer tube 3, a longitudinal movement of the outer peripheral side arranged ramp 19 on the inclined surface 18 on the brake element 15th transferred and converted into a radial movement of the at least one brake element 15. As a result of this radial movement, the brake element 15 can act on the inner circumference of the standpipe 17 in such a frictionally engaged manner that, until further notice, a relative movement between the inner and outer tubes 2, 3 is delayed or prevented.

In order to connect the components of the braking or blocking device 14 with each other, the outer tube 3 has at least one insertion opening 21 which passes through the at least one brake element 15. While the brake element 15 on its facing the inner tube 2 end or peripheral side has the inclined surface 18, the brake element 15 acts with its opposite, outwardly facing end or peripheral side with the outer tube 3 embracing standpipe 17 together.

In order to seal the annular jacket space 4 tight in this area, the sliding ring seals 8, 9 are provided, which on the outer or inner circumference of the ring-shaped and the inner tube 2 embracing brake piston 20 each in an annular groove are arranged.

The brake element 15 may be circular and be expandable by a pressure change in the annular jacket space and / or by a change in the relative position of the inner and outer tubes 2, 3 in the radial direction or in the transverse direction. But it is also possible that - as here - on the brake piston 20 a plurality, preferably spaced apart at equal intervals brake elements 15 are provided. In particular, a circular brake element may be made of elastic material to after each braking or locking operation to achieve a release of the braking or blocking device 14 and a return movement of the brake element 15.

Claims (14)

Telescopic water outlet (1) with an inner tube (2) designed as a flow tube and an outer tube (3) designed as an outlet tube, which surrounds (3) the inner tube (2) at a distance to form an annular jacket space (4), characterized in that the inner tube (2) at its in the outer tube (3) arranged Stirnendbereich an inner tube head (10) with an outer tube (3) inner peripheral side slidably acting annular flange (11), and that the inner tube head (10) at its annular flange (11) Has at least one flow opening (6) and at its head circumference at least one in the annular jacket space (4) opening out flow opening (5). Water spout according to claim 1, characterized in that the inner tube head (10) as a separate and with the inner tube (2) connectable component can be produced. Water spout according to claim 1 or 2, characterized in that the inner tube head (10) has a connection with the inner tube (2) connecting pin, which is sleeve-shaped and can be pushed onto the inner tube Stirnendbereich, or in the tube interior of the inner tube Stirnendbereichs is insertable. Water spout according to one of claims 1 to 3, characterized in that the connecting pin is crown-shaped with a plurality, distributed over the circumference of the connecting pin arranged and open to the free end of the journal end flow-through openings (5) is configured. Water spout according to the preamble of claim 1, in particular according to one of claims 1 to 4, characterized in that a telescopability of the water outlet (1) by means of a braking or blocking device (14) can be delayed or prevented, which brake or blocking device (14) by a pressure change in the annular jacket space (4). and / or by a change in the relative position of the inner and outer tubes 82, 3) can be activated. Water outlet according to one of claims 1 to 5, characterized in that the braking or blocking device (14) at least one on the inner or outer tube (2, 3) held Bremselement (15) that by a pressure change in the annular jacket space (4) and or by a change in the relative position of the inner and outer tubes (2, 3) in the radial direction or transverse direction is movable or deformable such that the at least one brake element (15), the inner tube (2) or a, with a valve body (16) rigidly connected standpipe (17) acted upon. Water spout according to one of claims 1 to 6, characterized in that the at least one brake element (15) with a frontal or peripheral inclined surface (18) acts on a ramp (19) and that the brake element (15) and its associated bevel (19 ) by a change in pressure in the annular jacket space (4) and / or by a change in the relative position of the inner and outer tubes (2, 3) experience a relative movement, such that the braking element (15) moves or deforms in the radial direction or in the transverse direction. Water spout according to one of claims 1 to 7, characterized in that between inner and outer tube (2, 3) an annular brake piston (20) is displaceably guided, which has at least one bevel (19) on its outer or inner circumference. Water spout according to one of claims 1 to 8, characterized in that the outer tube (3) has at least one through opening (21) which passes through a brake element (15) and that the brake element (15) at its end facing the inner tube (2) or peripheral side which has a ramp (19) on the brake piston (20) acting on inclined surface (18) and cooperates with its opposite, outwardly facing end or peripheral side with a the outer tube (3) embracing standpipe (17). Water spout according to one of claims 1 to 9, characterized in that the brake piston (20) relative to the inner tube (2) and / or relative to the outer tube (3) by means of at least one mechanical seal (8, 9) is sealed. Water spout according to one of claims 1 to 10, characterized in that the braking element (15) is circular and by a change in pressure in the annular jacket space (4) and / or by a change in the relative position of the inner and outer tubes (2, 3) in the radial direction is expandable to the standpipe (17). Water spout according to one of claims 1 to 11, characterized in that the braking element (15) is made of elastic material. Water spout according to one of claims 1 to 12, characterized in that the outer tube (3) in the standpipe (17) slidably guided. Water spout according to one of claims 1 to 13, characterized in that at the outlet end (12) of the water outlet (1) a shower head and / or a jet regulator (13) is provided.

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