EP3586974A1 - Sanitary shower head - Google Patents

Abstract

The invention relates to a sanitary shower head (1) with a shower head housing (2) with a fluid inlet (3), a fluid chamber (4) in fluid communication with the fluid inlet in the shower head housing and a spray disc (6) with at least one jet outlet opening (5) is arranged on a shower jet outlet side (7) of the shower head housing and is held circumferentially on the shower head housing and the fluid chamber is delimited on the outlet side, the jet disk being formed as an elastic disk which can be elastically deformed from an initial contour (8) into an end contour by a fluid pressure in the fluid chamber , The fluid chamber is delimited on a side opposite the jet disk by a boundary surface which extends at least in a partial surface area in conformity with the exit contour, and / or the exit contour is curved inward in the direction of the fluid chamber.

Description

The invention relates to a sanitary shower head which comprises a shower head housing with a fluid inlet, a fluid chamber in the shower head housing which is in fluid communication with the fluid inlet and a spray disc which has at least one jet outlet opening and which is arranged on a shower jet outlet side of the shower head housing and is held on the circumference of the shower head housing and which The fluid chamber is limited on the outlet side, the jet disc being formed as an elastic disc which can be elastically deformed from an initial contour into an end contour by a fluid pressure in the fluid chamber.

The disclosure DE 29 01 013 A1 discloses such a sanitary shower head of the type mentioned at the outset, the shower head there having a spray disc which is flat in the unpressurized initial state and which maintains its flat shape even at low water pressure and then produces a parallel shower spray. When the water pressure is higher, the flat spray disc bulges out and creates a divergent shower spray. A spoke-shaped support limits the bulging of the flat spray disc.

There have also been various proposals for sanitary shower heads with a deformable spray disc which is not deformed by the fluid pressure acting on them, but rather by user-operated adjusting means. So the published disclosure DE 2 235 217 A a sanitary shower head with a deformable spray disc, which is flat in the initial state and which is not deformed by the water pressure during operation, but can be deformed by a user-operated, mechanical adjusting means, assuming a concave or a convex deflection as required. With the concave deflection, a converging shower jet can be produced and with the convex deflection, a divergent shower jet can be generated.

The patent EP 1 613 814 B1 discloses a sanitary shower head with a spray disc which can be deformed in a spring-dependent manner and which, when a temperature limit value of a fluid flowing through it exceeds a functional position moved to a cleaning position. In the cleaning layer, for example, lime can be removed with little effort. If the temperature drops below the temperature limit, the spring-like spray disc springs back into its functional position.

The patent EP 0 894 536 B1 discloses a sanitary shower head with a spring-like flexible spray disc which is curved outwards in a starting position and can be pressed in by a user by exerting an indenting force in the direction of the housing interior of the shower head. When the force is released, the flexible spray disc automatically jumps back to the starting position. Limescale and other deposits on the spray disc are to be blasted off by such jumping processes of the flexible spray disc.

Another such shower head with a spring disc that can be pressed in like a spring is in the utility model DE 79 04 756 U1 disclosed.

The disclosure DE 43 00 322 A1 discloses a shower head for a shower and massage device, which is equipped with a hollow bristle-bearing and has a central outlet opening, permanently elastic brush plate, on the inside of which is provided with an angled inlet pipe, between the inlet pipe opening and the hollow outlet, which is arranged on a in the end of the shower head facing has an external thread which is connected to a threaded part of a single-leaf stop-limited actuator which is axially countersunk on the outside of the shower head. By rotating the actuator, the user can selectively move the brush plate from a flat central position into a curved position with a concave or convex shape.

The invention is based on the technical problem of providing a sanitary shower head of the type mentioned at the outset, which is improved over the prior art explained above and, in particular, reduces unwanted dripping after a water supply has been shut off, is relatively simple to manufacture and is functionally reliable.

The invention solves this problem by providing a sanitary shower head with the features of claim 1. Advantageous and preferred configurations The invention is the subject of the further claims, the wording of which is hereby incorporated in full by reference into the description.

A fluid, in particular water, can be supplied to the sanitary shower head via the fluid inlet, which fluid then enters the fluid chamber and from there to the jet outlet opening (s) and emerges therefrom with the formation of a corresponding shower jet. Depending on the fluid pressure prevailing in the fluid chamber, the elastically deformable jet disc assumes the initial contour or the final contour. As a result of the deformation of the jet disk, a position of a cylinder axis of the jet outlet opening can change, for example. Such a change in the position of this cylinder axis can have the result that a spreading angle of a shower jet generated by the sanitary shower head is also dependent on the fluid pressure. Therefore, with such an arrangement, depending on the system design and fluid pressure, a diverging, converging or parallel shower spray can be generated. In the case of a divergent shower jet, the shower jet diameter increases with the progressive axial spread of the shower jet, with a parallel shower jet the shower jet diameter is practically constant with the progressive spread, and with the converging or focussing shower jet, the shower jet diameter decreases immediately after the jet outlet opening.

The spray disc can, for example, be held on the shower head housing on the circumferential side in a positive or non-positive manner. On the circumferential side, it is to be understood in the present case that the jet disc is held on its edge surface and / or a circumferential, annular holding surface has a front, i.e. outlet-side end face of the spray disc covers or encompasses, in particular a holding surface formed on the shower head housing.

The spray disc can consist, for example, of an elastic rubber, metal or plastic material or a mix of such materials. The at least one jet outlet opening can be designed, for example, as a nozzle and / or as a circular cylindrical hole. The at least one jet outlet opening preferably has a geometry that is stable in shape regardless of the fluid pressure. The jet disk can have any number of jet outlet openings, in particular, for example, between ten and have two hundred beam outlets. Depending on requirements, the sanitary shower head can have a single spray disc or alternatively a plurality of spray discs.

The jet disc is preferably elastically deformed by the fluid pressure out of the initial contour in the direction of the final contour as soon as the fluid pressure is greater than a previously defined limit pressure. The previously defined limit pressure can be, for example, between 0.2 bar and 0.5 bar. The elastic deformation of the spray disc from the initial contour into the final contour preferably takes place in the direction of a main direction of propagation of a shower jet generated by the sanitary shower head. As long as the limit pressure is not reached or exceeded, the spray disc remains in its initial contour. The jet disk is preferably designed to automatically return to the starting contour when it is in its end contour and the fluid pressure in the fluid chamber drops, for example below the limit pressure mentioned.

In particular, depending on the fluid pressure in the fluid chamber, the jet disc can assume a plurality of different end contours as soon as the fluid pressure is greater than a specifiable limit pressure and assigned to the respective end contour. The highest predetermined limit pressure can be, for example, a maximum fluid pressure that occurs during normal shower operation of the shower head, which e.g. is between 1 bar and 3 bar. In other words, the final contour itself can be fluid pressure dependent, i.e. depending on the instantaneous fluid pressure in the fluid chamber, the jet disc then assumes its initial contour, a maximum final contour or an intermediate final contour or intermediate contour between the initial contour and the maximum final contour.

According to one aspect of the invention, in the sanitary shower head according to the invention, the fluid chamber is delimited on a side opposite the spray disc by a boundary surface which conforms to the initial contour of the spray disc in at least one partial area.

The fluid chamber has an initial volume when the jet disc takes its initial contour and a deformation volume when the jet disc has its final contour occupies. Typically, the output volume is smaller than the deformation volume, for example by at least 50% smaller, the output volume in corresponding versions also being approximately zero, for example by placing the jet disc with its output contour against an opposite wall that delimits the fluid chamber axially inward, that is to say to the rear of the shower head housing.

If the spray disc conforms in the partial surface area, e.g. parallel and offset, runs to the boundary surface or abuts against it, a distance between the jet disc and the boundary surface can be kept very small in the partial surface area if necessary. As a result, the fluid chamber can have a particularly small initial volume. Since the fluid in the fluid chamber is predominantly responsible for undesired dripping, a small initial volume counteracts undesired dripping after the water supply has been shut off. Another advantage is that when the jet disc automatically returns to the initial contour, the fluid in the fluid chamber is partially or almost completely pressed out of the fluid chamber.

According to an additional or alternative aspect of the invention, the exit contour is curved in the direction of the fluid chamber, i.e. concave. Such a curvature of the exit contour can be particularly advantageous for generating a converging shower jet at low fluid pressure, which does not yet cause any deformation movement of the jet disc out of its exit contour, in particular if there are a large number of jet outlet openings, the cylinder axis of which is a normal of the jet disk, i.e. perpendicular to the surface of the spray disc at this point.

In one embodiment of the invention, the end contour of the jet disc is curved outwards. In other words, the end contour of the jet disc is convexly curved. This course enables the generation of a divergent shower jet, for example if the cylinder axis of the respective jet outlet opening is a normal to the jet disk.

In one embodiment of the invention, the starting contour and / or the end contour is a metastable contour of the jet disc. In other words, small changes to the Fluid pressure, such as changes in fluid pressure of, for example, less than 0.2 bar or 0.25 bar, do not yet lead to a change in the initial or final contour in this case. Larger changes in the fluid pressure, such as changes in fluid pressure of greater than or equal to 0.25 bar, lead to a change in the contour. For this purpose, the spray disc can optionally be designed as a so-called spring spring or pop frog element.

In alternative embodiments of the invention, the jet disc is made in one piece from a single material or from a combination of several materials, or is assembled from several components, which may consist of the same material or of different materials, in particular a rubber, a plastic and / or a metal ,

In one embodiment of the invention, the spray disc provides a first shower jet in its initial contour and a second shower jet in its final contour, the first and second shower jet differing in their angle of propagation. For example, the angle of propagation of the second shower spray can be greater than the angle of spread of the first shower spray. The first shower jet can preferably be a converging or a parallel shower jet and the second shower jet can be a parallel or diverging shower jet.

In one embodiment of the invention, the jet disc is supported with its initial contour against the boundary surface at least in one support surface area. For example, the support surface area can be part of the partial surface area, or the partial surface area can form the support surface area identically.

In one embodiment of the invention, the at least one jet outlet opening contains a number of first jet outlet openings and a number of second jet outlet openings, and the jet disc is supported with its output contour on the boundary surface in such a way that the boundary surface closes the number of second jet outlet openings. As a result, no fluid emerges from the second jet outlet openings as long as the jet disk is in its initial contour. The number of first jet outlet openings and the number of second jet outlet openings can each be any number, for example between five and one hundred jet outlet openings.

In one embodiment of the invention, the at least one jet outlet opening contains a number of first jet outlet openings and a number of second jet outlet openings, the number of first jet outlet openings corresponding to a first fluid chamber subarea and the number of second jet outlet openings corresponding to a second fluid chamber subarea. The first fluid chamber portion is in fluid communication with the fluid inlet both when the jet disc takes its initial contour and when the jet disc takes its end contour. The second fluid chamber portion is in fluid communication with the fluid inlet when the jet disc takes its final contour and is completely or partially shut off by a seal from the fluid inlet when the jet disc takes its initial contour. The seal can be arranged on the spray disc and / or on the boundary surface. The seal can be, for example, an annular seal, in particular an O-ring.

In one embodiment of the invention, the boundary surface has at least one mandrel, which projects into the at least one jet outlet opening when the jet disk assumes its initial contour. If desired, the mandrel can protrude or protrude from the at least one jet outlet opening when the jet disc assumes its initial contour. When the jet disc takes on its final contour, the mandrel can still protrude into the at least one jet outlet opening or, depending on the need and application, alternatively no longer extend to the at least one jet outlet opening. Such a mandrel can be provided for each or only part of the jet outlet openings as required. The mandrel can advantageously counteract limescale deposits on the jet outlet opening, in that the mandrel detaches such deposits from the jet outlet opening when the jet disk assumes its initial contour or final contour or moves in a deforming manner between these two contours.

Fig. 1

eine Längsschnittansicht eines sanitären Brausekopfs mit verformbarer Strahlscheibe in ihrer Ausgangskontur,

Fig. 2

die Ansicht von Fig. 1 mit der Strahlscheibe in ihrer Endkontur,

Fig. 3

die Ansicht von Fig. 1 für eine Variante mit vollkonformer Fluidkammer-Begrenzungsfläche,

Fig. 4

die Ansicht von Fig. 1 für eine Variante mit teilkonformer Fluidkammer-Begrenzungsfläche,

Fig. 5

die Ansicht von Fig. 2 für die Variante von Fig. 4,

Fig. 6

die Ansicht von Fig. 3 für eine Variante mit Dornen und

Fig. 7

die Ansicht von Fig. 2 für die Variante von Fig. 6.

Advantageous embodiments of the invention are shown in the drawings. These and other embodiments of the inventions are explained in more detail below. Here show:

Fig. 1

2 shows a longitudinal sectional view of a sanitary shower head with a deformable spray disc in its starting contour,

Fig. 2

the view of Fig. 1 with the spray disc in its final contour,

Fig. 3

the view of Fig. 1 for a variant with a fully compliant fluid chamber boundary surface,

Fig. 4

the view of Fig. 1 for a variant with partially compliant fluid chamber boundary surface,

Fig. 5

the view of Fig. 2 for the variant of Fig. 4 .

Fig. 6

the view of Fig. 3 for a variant with thorns and

Fig. 7

the view of Fig. 2 for the variant of Fig. 6 ,

The Fig. 1 and 2 show a sanitary shower head 1 with a shower head housing 2, which has a fluid inlet 3. The fluid inlet 3 optionally has a thread 16 which can be screwed for supplying a fluid with a corresponding thread (not shown further) of a water hose, a shower hose, a connecting pipe of a domestic water supply or the like.

A fluid chamber 4 located in the shower head housing 2 is in fluid communication with the fluid inlet 3. The fluid chamber 4 is delimited on the outlet side by a one-piece, alternatively multi-part, jet disc 6. The spray disk 6 is arranged on a shower jet outlet side 7 of the shower head housing 2. The spray disc 6 is held circumferentially on the shower head housing 2, e.g. in that the shower head housing 2 positively engages around the spray disc 6 in an annular end face region RS of the spray disc 6.

The jet disc 6 is formed as an elastic disc, which consists for example of a rubber, metal and / or plastic material, and is elastically deformable by a fluid pressure in the fluid chamber 4 from an initial contour 8 into an end contour 9. In corresponding embodiments, the starting contour 8 runs as in FIG Fig. 1 shown, arched in the direction of the fluid chamber 4.

As long as there is no fluid pressure in the fluid chamber 4, the jet disc 6 remains in its initial contour 8, as in FIG Fig. 1 shown. If the fluid pressure exceeds a certain limit pressure of, for example, 0.25 bar, the jet disc 6 takes its end contour 9, which, for example, bulges outwards Fig. 2 on. For this purpose, the jet disk 6 is elastically deformed outward in the direction away from the fluid chamber 4 by the fluid pressure. In corresponding designs, the jet disk 6 deforms in a virtually binary manner from the starting contour 8 directly into a single end contour 9, in which it then remains, even if the fluid pressure continues to rise. In alternative designs, the jet disc 6 deforms with increasing fluid pressure from the initial contour 8 continuously or in stages into a respective fluid pressure-dependent end contour 9 up to a predeterminable maximum end contour.

When the fluid pressure in the fluid chamber 4 falls below the specified limit pressure again, the jet disc 6 automatically returns to the initial contour 8 due to its inherent elasticity or pretension. During its return to the initial contour 8, the jet disc 6 can at least partially push fluid still in the fluid chamber 4 out of the fluid chamber 4, by this return movement reducing the volume of the fluid chamber 4, which was previously caused by the deformation of the jet disc 6 in the final contour has increased. This can reduce unwanted dripping after the fluid supply has been shut off.

The jet disk 6 has at least one jet outlet opening 5, specifically several jet outlet openings 5 in the example shown. Each jet outlet opening 5 can be designed, for example, as a circular cylindrical hole with a cylinder axis ZA, the cylinder axis ZA forming a normal to the jet disk 6 at this point on the jet disk surface. The jet outlet openings 5 are in fluid communication with the fluid chamber 4. When the shower head 1 is operating, fluid, in particular water, is under pressure in the fluid chamber 4 and from there the jet outlet openings 5, from which it flows on the shower jet outlet side 7, forming a first shower jet 12 , when the spray disc 6 is in its starting contour 8, or emerges with the formation of a second shower spray 13 when the spray disc 6 is in its end contour 9. After emerging from the jet outlet openings 5, the first shower jet 12 or the second shower jet 13 spreads in a typically axially extending main direction of propagation AR and at a respective angle of propagation AW off. The angle of propagation AW is an angle that results between an edge jet direction RB of the first shower jet 12 or the second shower jet 13 and the main direction of propagation AR or a straight line GE parallel and offset to the latter.

Fig. 1 shows the provision of the first shower jet 12 in the form of a converging shower jet. Since the exit contour 8 is curved inward in the direction of the fluid chamber 4 and the cylinder axes ZA of the jet outlet openings 5 are each normal to the jet disk 6, a shower jet diameter of the first shower jet 12 takes place immediately after it emerges from the jet outlet openings 5 and with the progressive spreading of the first shower jet 12 in the main direction of propagation AR. The angle of propagation AW of the first shower jet 12 is, for example, between approximately -20 ° and -3 °, in corresponding versions more specifically between approximately -12 ° and -8 °.

Fig. 2 shows the provision of the second shower spray 13 in the form of a diverging shower spray. Since the end contour 9 is curved outwards away from the fluid chamber 4 and the cylinder axes ZA of the jet outlet openings 5 are in each case a normal of the jet disc 6, the shower jet diameter of the second shower jet 13 increases as the second shower jet 13 progressively spreads out in the direction of propagation AR. The angle of propagation AW of the second shower jet 13 is, for example, between approximately + 20 ° and + 3 °, in corresponding versions more specifically between approximately + 12 ° and + 8 °. Thus, the second shower jet 13 and the first shower jet 12 differ in their spread angle AW. Therefore, with the sanitary shower head 1, a converging shower jet or a divergent shower jet can be generated as required by adjusting the fluid pressure.

In Fig. 3 is a variant of the sanitary shower head 1 of the Fig. 1 and 2 shown, with the same reference numerals being used for better understanding of identical and functionally equivalent elements and, in this respect, also referring to the above statements relating to the exemplary embodiment of FIG Fig. 1 and 2 can be referred to, so that essentially only the existing differences are discussed below.

In the variant of Fig. 3 the jet outlet openings 5 of the jet disk 6 have a number of first jet outlet openings 5a and a number of second jet outlet openings 5b. Furthermore, the fluid chamber 4 is delimited by a conformal boundary surface 11 on a side 10 opposite the jet disk 6. The boundary surface 11 is provided by an inner body 17 of the sanitary shower head 1, which is arranged opposite the jet disc 6. Compared to in the Fig. 1 and 2 variant shown is in the variant of Fig. 3 the volume of the fluid chamber 4 is reduced by the inner body 17. The reduced volume of the fluid chamber 4 is advantageous for avoiding undesired dripping after the fluid or water supply has been shut off.

The boundary surface 11 extends at least in a partial surface area TB in conformity with the starting contour 8. The partial surface area TB optionally forms a supporting surface region AB as shown, which supports the jet disc 6 with its initial contour 8 inwards. Here, the jet disc 6 is supported with its output contour 8 against the boundary surface 11 in such a way that the boundary surface 11 closes the second beam outlet openings 5b, while the first beam outlet openings 5a remain exposed. In this embodiment, therefore, fluid only emerges from the first jet outlet openings 5a and not also from the second jet outlet openings 5b when the jet disk 6 is in its initial contour 8. When the jet disk 6 assumes its end contour 9, the second jet outlet openings 5b are released and fluid can emerge from the first jet outlet openings 5a and the second jet outlet openings 5b. The spray pattern of the shower spray with the spray disc 6 located in its end contour 9 can be that of the variant Fig. 2 correspond.

In the embodiment of the Fig. 3 The entire boundary surface 11 conforms to the initial contour 8 of the jet disc 6, the inner body 17 having a central bore which lies opposite the fluid inlet 3 and with which the first jet outlet openings 5a correspond. In an alternative embodiment, the first jet outlet openings 5a are missing, ie there are no jet outlet openings 5 corresponding to the bore in the inner body 17 which extends the fluid inlet 3. In this case, no shower jet is provided as long as the jet disk 6 is in its initial contour 8.

Furthermore, the output contour 8 in the example shown is a stable or at least metastable contour of the jet disc 6. Therefore, the jet disc 6 does not deform out of its output contour 8 until the fluid pressure exceeds a limit value, e.g. about 0.25 bar and can alternatively have any other value. As long as the fluid pressure does not exceed the limit value, the contour of the jet disk 6 does not change. This can be achieved by implementing the spray disc 6, among other things. in terms of material and thickness.

In an alternative variant, the jet disc 6 is supported with its output contour 8 by the boundary surface 11 such that the latter closes all jet outlet openings 5 of the jet disk 6. In this case, therefore, fluid can only emerge from the jet outlet openings 5 when the jet disk 6 is deformed out of its initial contour 8 into its final contour 9. In further alternative designs, the end contour 9 or only the end contour 9 instead of the starting contour 8 forms a metastable contour of the jet disk 6.

In the Fig. 4 and 5 is a variant of the sanitary shower head 1 of the Fig. 3 shown, with the same reference numerals being used for better understanding of identical and functionally equivalent elements and, in this respect, also referring to the above statements relating to the exemplary embodiment of FIG Fig. 3 can be referred to, so that essentially only the existing differences are discussed below. In this variant, the jet outlet openings 5 of the jet disk 6 have a number of first jet outlet openings 5a and a number of second jet outlet openings 5b, the first jet outlet openings 5a corresponding to a first fluid chamber subarea 4a and the second jet outlet openings 5b corresponding to a second fluid chamber subarea 4b. The first fluid chamber section 4a is in fluid communication with the fluid inlet 3 both when the jet 6 takes its initial contour 8 and when the jet 6 takes its end contour 9. The second fluid chamber section 4b is in fluid communication with the fluid inlet 3 when the spray disc 6 assumes its final contour 9. When the jet disk 6 assumes its initial contour 8, the second fluid chamber subarea 4b is completely shut off from the fluid inlet 3.

Accordingly, in this embodiment, the shower head 1 can act as a respective shower jet at a lower fluid pressure in accordance with a convergent partial jet Fig. 4 and at higher fluid pressure a divergent full jet Fig. 5 submit. In one variant, the jet disc 6 arrives in a binary deformation movement due to fluid pressure from its initial contour 8 Fig. 4 in their final contour 9 according Fig. 5 and automatically back into their starting contour 8 when the fluid pressure is released, so that the shower head 1 optionally supplies the two associated shower jets. In an alternative variant, the jet disk 6 arrives in a constant deformation movement due to fluid pressure from its initial contour 8 Fig. 4 out into end contours 9 that change continuously as a function of the fluid pressure, so that the shower head 1 provides a shower jet, the spray pattern of which is correspondingly continuously between the spray pattern in the output contour 8 of the spray disc 6 Fig. 4 and in accordance with the spray pattern in the maximum end contour 9 of the spray disc 6 Fig. 5 changes.

In the example shown, the inner body 17 has, on its side 10 opposite the jet disc 6, a side opposite the example in FIG Fig. 3 modified shape with regard to the boundary surface 11. Specifically, here the boundary surface 11 runs only in a radially outer partial surface region TB1, which corresponds to the second fluid chamber partial region 4b, in conformity with the exit contour 8 of the jet disk 6, while it in a central partial surface region TB2, which corresponds to the first fluid chamber partial region 4a corresponds to a step-back step. A seal 14 in the form of an O-ring, against which the jet disk 6 is supported in its starting contour 8, blocks the second fluid chamber section 4b in the exit contour 8 of the jet disk 6 with respect to the first fluid chamber section 4a and thus also with respect to the opening into the first fluid chamber section 4a Fluid inlet 3 from. In this embodiment, the seal 14 consequently forms the support surface area AB against which the jet disc 6 is supported in its initial contour 8.

The seal 14 is held on the inner body 17 in the example shown. In alternative embodiments, the seal 14 is held on the spray disc 6, or a first part of the seal is held on the spray disc 6 and a second part on the inner body 17. In further alternative designs, the second fluid chamber section 4b is only partially blocked by the fluid inlet 3 by the seal 14 when the jet disc 6 assumes its initial contour 8. This also works in this case then fluid from the first fluid chamber subarea 4a into the second fluid chamber subarea 4b when the jet disk 6 assumes its initial contour 8.

In the Fig. 6 and 7 is another variant of the sanitary shower head Fig. 3 shown, the same reference numerals being used for better understanding of identical and functionally equivalent elements and, in this respect, also referring to the above statements relating to the exemplary embodiments of FIGS Fig. 3 can be referred to, so that essentially only the existing differences are discussed below. In this variant, all jet outlet openings 5 correspond to the partial surface area TB of the boundary surface 11 which runs in conformity with the initial contour 8, and the boundary surface 11 of the inner body 17 has a number of spikes 15 which protrude into the jet outlet openings 5 when the jet disk 6 assumes its initial contour 8 ,

In corresponding embodiments, the number of spikes 15 is equal to the number of beam outlet openings 5, so that a spike 15 is assigned to each beam outlet opening 5. In alternative designs, fewer mandrels 15 are provided than beam outlet openings 5. In corresponding designs, each mandrel 15 protrudes into the respective beam outlet opening 5 such that it protrudes from the beam outlet opening 5 when the jet disk 6 assumes its initial contour 8. In alternative embodiments, each mandrel 15 projects into the beam outlet opening 5, but not out of it. When the jet disc 6 assumes its end contour 9, the mandrel 15 no longer protrudes into the jet outlet opening 5, so that the latter is completely free for the passage of shower jet-forming fluid. Lime deposits on the beam outlet openings 5 can be avoided or detached by the mandrels 15, especially by moving them into and out of the beam outlet openings 5.

Deviating from the examples shown, it is possible in an alternative variant of the sanitary shower head according to the invention that an orientation of the cylinder axis ZA, ie the longitudinal axis, of the jet outlet openings 5 is not oriented normally to the jet disk 6. In particular, the orientation of the cylinder axis ZA can be selected such that, for example, a parallel shower jet or a diverging shower jet can be generated with the jet disc 6 in its starting contour 8. In further variants, not shown, the number and / or the arrangement of the jet outlet openings 5 of the sanitary shower head 1 according to the invention is varied compared to the examples shown. In particular, the sanitary shower head 1 can have only one jet outlet opening 5 in corresponding designs in order to generate a so-called gush jet. Alternatively, the shower head can have a multiplicity of jet outlet openings 5, which are distributed uniformly in the center region or off-center or over the entire jet disk area or arranged in groups, including embodiments in which various common types of shower jet can be generated with the jet outlet openings 5, such as a soft jet and a massage jet.

In further variants, the sanitary shower head 1 can be any combination of the variants shown in FIG 1 to 7 his. For example, the sanitary shower head 1 can have the seal 14 and additionally the spikes 15.

As the exemplary embodiments shown and explained above make clear, the invention provides a sanitary shower head which reduces unwanted dripping after the water supply has been shut off, is relatively easy to manufacture and is functionally reliable.

Claims (9)

Sanitary shower head (1) with - a shower head housing (2) with a fluid inlet (3), - A fluid chamber (4) in the shower head housing and in fluid communication with the fluid inlet - a jet disc (6) having at least one jet outlet opening (5), which is arranged on a shower jet outlet side (7) of the shower head housing and is held circumferentially on the shower head housing and delimits the fluid chamber on the outlet side, the jet disc is formed as an elastic disc which can be elastically deformed by an fluid pressure in the fluid chamber from an initial contour (8) into an end contour (9),
characterized in that - The fluid chamber (4) on a side (10) opposite the jet disc (6) is delimited by a boundary surface (11) which extends at least in a partial surface area (TB, TB1) conforming to the initial contour (8) of the jet disc, and / or - The output contour (8) of the jet disc (6) in the direction of the fluid chamber (4) is curved inwards. Sanitary shower head according to one of the preceding claims, characterized in that the end contour of the spray disc is curved outwards. Sanitary shower head according to one of the preceding claims, characterized in that the starting contour and / or the end contour is a metastable contour of the spray disc. Sanitary shower head according to one of the preceding claims, characterized in that the spray disc is made in one piece from one or more materials or in several parts from one or more materials. Sanitary shower head according to one of the preceding claims, characterized in that the spray disc provides a first shower jet (12) in its initial contour and a second shower jet (13) in its end contour, the first and the second shower jet differing in their angle of propagation (AW) , Sanitary shower head according to one of the preceding claims, characterized in that the jet disc is supported with its starting contour at least in one support surface area (AB) against the boundary surface. Sanitary shower head according to claim 6, characterized in that - The at least one jet outlet opening has a number of first jet outlet openings (5a) and a number of second jet outlet openings (5b) and - The jet disc is supported with its starting contour in such a way that the boundary surface closes the number of second jet outlet openings. Sanitary shower head according to claim 6, characterized in that - The at least one jet outlet opening has a number of first jet outlet openings (5a) and a number of second jet outlet openings (5b) and the number of first jet outlet openings correspond to a first fluid chamber partial area (4a) and the number of second jet outlet openings correspond to a second fluid chamber partial area (4b), the first fluid chamber portion being in fluid communication with the fluid inlet both when the jet disc takes its initial contour and when the jet disc takes its final contour, and - wherein the second fluid chamber portion is in fluid communication with the fluid inlet when the jet disc takes its final contour, and is completely or partially shut off by a seal (14) from the fluid inlet when the jet disc takes its initial contour. Sanitary shower head according to one of the preceding claims, characterized in that the boundary surface has at least one mandrel (15), which protrudes into the at least one jet outlet opening when the jet disk assumes its initial contour.

Images