EP0894536A2 - Shower head - Google Patents

Abstract

At least one surface area of the spray disc is curved outwards and on exceeding a certain press-in force (E), the springs suddenly round with the curvature inwards into a space behind. On relaxing the force the surface area springs back again by itself into the starting position. The at least one surface area can be pressed in by a finger where the surface of the disc is larger than the finger tip. The spray disc can have a material weakness along a closed line and is formed by a thinner material area.

Description

The invention relates to a shower device with a flexible and flat spray disc.

Shower facilities with a flat spray disc are Very common. A shower head is known from US Pat. No. 3,383,050 known, the one for adjusting the shower jets has flexible spray disc. By means of a central Screw the curvature can be varied. A similar Jet disc is described in DE-OS 2 235 217.

A shower is known from the G 79 04 756, the one has elastically deformable spray disc. Through the The deformability of the spray disc can affect this in certain areas manually pressed in, causing annoying limescale deposits on their surfaces and in the area of through holes formed water passage channels are detached. Through a Pressing in the spray disc deforms it so far that Deposits can be loosened and washed away.

Lime deposits have an adverse effect on the the optical impression of the shower the disadvantage that it Clogged water passages up to clogging, which the function of the shower may be severely restricted becomes. Furthermore, limescale and other deposits are unsanitary.

TASK AND SOLUTION

It is the object of the invention to provide a shower device create lime and other deposits easily and can be reliably replaced.

This task is performed by a shower device with a flexible and flat spray disc solved at least a surface area of the spray disc is curved outwards and when a certain one is exercised on it Impression force abruptly with the bulge inwards jumps around a space behind and when the force is released jumps back to the starting position by itself. These jumps when the jet disc is deformed cause acceleration forces in addition to this deformation as well as a vibration of the jet disc. The peculiarity of the invention improves three factors a release of limescale or other deposits. Especially the vibration of the spray disc as well as of the whole Shower device with it causes a detachment from rigid Limescale deposits in the area of the spray disc. The spray disc can vary in shape, especially in outline Limits can be designed arbitrarily. By jumping out of the Jet disc ensures that it works by itself all cases return to the starting position.

Descaling the shower device according to the invention without much effort for a user the at least one area can be pressed in with one finger be. This can happen, for example, while using the Shower equipment happen so that dissolved lime or other Deposits of the shower water from the shower device be washed out. For better triggering of the descaling process can the surface of the spray disc, in particular the at least one impressionable area, larger than one Be fingertip.

A jet disc advantageously has a defined contact surface for applying a force, for example over Finger pressure, on. The contact surface is preferably smaller than the area and in particular has a diameter on that is slightly less than half the diameter of the Area. The contact surface can have any shape have, the surface centers preferably coinciding. Essentially circular are advantageous Viewed designs.

In a preferred embodiment of the invention, a Jet disc with at least one material weakening in particular along a substantially closed line Mistake. The material weakening can spread over a width extend approximately in the range of the average thickness of the Spray disc lies. It can be done in different ways be.

The wall thickness of the material weakening is advantageous, especially a material thinning in one area between 10% and 60% of the mean thickness of the spray disc, preferably about 30%. Such a weakening of materials enables a defined jumping around of the curved spray disc. The material weakening is preferably a film hinge educated.

It is also possible to weaken the material along one Line through recesses or holes along this line to reach. By the distance and the diameter of this Holes can weaken the material. Through the Design options for material weakening can the jumping around at least one area of the jet disc both in terms of its area and in terms of be influenced on the process of jumping over.

The shower device can have a solid component, outwardly weakening material, especially the spray disc. Preferably can it frame the spray disc. Around the spray disc This component can be particularly strong to give necessary strength be made torsionally rigid, for example by a Wall thickness that is significantly above the average thickness of the Spray disc lies. The structure of the shower device will simplified if the massive component directly to the Material weakening follows. The massive component serves as a kind of frame that both the jet disc and material weakening contains, as well as especially in their deformation forces occurring, in particular in approximately the radial direction occurring forces, absorbs without yielding.

For a compact and above all stable construction of the shower device the spray disc is preferably with the massive component connectable or connected. Very cheap the two are made in one piece as a structural unit. The facilitates manufacture, assembly and handling.

The solid component can be a cylindrical pipe section have, which can preferably be connected to a shower housing is. This is a one-piece design of the component regarded as particularly favorable with the pipe section. The Connection to the shower housing is for example via a Screw thread possible. The massive component can be one massive flange connected to the outside of the spray disc have, which can preferably be connected to the shower housing is. Such a flange improves the stability of the Component, especially across from the spray disc Push-in or push-back process emanating radial forces.

The contact surface is preferably with a stiffener or the like. provided, in particular as a stiffening ring or stiffening rib can be formed. The stiffening favors the constant jumping and especially the automatic Jump back of a pressed-in spray disc. If the stiffening on the outside of the contact surface, especially as a rib, it can be used as a centering aid serve for a finger placed on the contact surface, so that the impression force is intuitive to that for the snap action optimal place.

The contact surface can preferably have a diameter of approximately 5 mm to 15 mm, in particular about 10 mm. This Size range is particularly good for both intuitive Feel with your finger as well as to be sufficiently precise defined application of the impression force.

The spray disc with an average wall thickness is advantageous in the range from 0.4 mm to 1 mm, especially with approx. 0.7 mm. Such a material thickness is used for preferably used plastics as sufficient Considered flexibility. It gives the spray disc one for use in a shower facility necessary strength. This means that the spray disc can be one of an ignorant or careless user Resist force that is a multiple of preferably to The intended indentation force is.

The material thickness of the material weakening can be preferred between 0.1 mm and 0.5 mm, in particular between 0.2 mm and 0.3 mm. So is a clear, on a low Limited decrease in the wall thickness of the material in the Area of material weakening compared to the rest Given spray disc with formation of the film hinge. In an alternative version, the material is weakened executed as a perforation type of perforation, the Wall thickness in the area of the webs of the surrounding material between the holes approximately the material thickness of the spray disc correspond.

The material weakening is advantageously designed in a ring shape. It can have a diameter of approximately 10 mm to 60 mm, with a diameter of about 20 mm to 40 mm as is viewed particularly favorably.

In one embodiment of the invention, the spray disc is made of plastic. In a preferred embodiment, the spray disc can consist of a halogen-free thermoplastic with a dimensional stability of up to 120 ° C., preferably up to 100 ° C., for example polyoxymethylene or polypropylene. Its modulus of elasticity is between 800 N / mm ² and 1600 N / mm ² , preferably around 1200 N / mm ² , and is considered to be advantageous for the configuration and use of the spray disc in a shower device. These plastics can be produced with a very smooth surface, which complicates the formation of deposits and facilitates their detachment by means of a snap-off process according to the invention. It is possible to manufacture the spray disc by injection molding. The flexibility of the spray disc is achieved by its design with a small wall thickness. By using a plastic material, the jet disc is constructed with a film hinge in the form of the material weakening, which encloses the at least one surface area that can be pressed in. This position can be changed along this film or ring hinge in relation to the rest of the shower device, in particular to the solid component.

It is considered beneficial for the function and handling of the Shower facility viewed when the contact surface is within the material weakening is arranged, preferably the Center points of the area are close to each other or coincide can. In this way it becomes precise and even Snap the indented area of the Jet disc achieved because of the application of an indentation force radial forces caused approximately uniform are distributed along the material weakening.

The spray disc can be rotationally symmetrical or be produced, wherein they prefer this rotational symmetry both in the starting position and in the maximum after keeps arched condition inside. Preferably the Rotational symmetry even during an intended Get indentation or springback. Like a Crack frog jumps the spray disc at particularly preferred Embodiments not only suddenly, but created by this sudden change preferably cracking noise. This sound signals a user that the spray disc jumps around and Lime and other deposits can be blasted off. Consequently there is an acoustic feedback about the jumping process.

Water passage channels for flowing through the shower device Water is preferred through holes within the Weakening of materials, especially within the contact surface, educated. The holes can be designed differently be, for example with different cross-sectional shapes or diameters. This way, the water in a variety of water jets are split up that depending on the design of the water passage channels are procured. Massage jets are also possible especially discontinuously with high exit speed emerge from the spray disc. The holes can be arranged in any way, preferred is one Arranged in concentric rows. The center of the concentric rows can be aligned with the axis of symmetry rotationally symmetrical spray disc coincide. It is possible, the holes in a row offset from the holes on it adjacent rows.

In a preferred embodiment of the invention, the Jet disc in a central area, especially one circular, preferably uninterrupted central area, run straight or be curved inwards. This Central area can be in the middle of the spray disc or of the contact surface. Such an arched central area centers that of a user via finger pressure applied impression force. The process of snapping the spray disc is improved by this central area as through its curvature the material surrounding it the spray disc after a transition point has been exceeded automatically and with a certain slope inside bulges. The central region preferably has a diameter in the range from 1 mm to 8 mm, as particularly advantageous are considered about 4 mm. The clear height of the center this central curvature lies above the level of the contact surface between 0.2 mm and 0.8 mm, especially at approx. 0.5 mm. The Material thickness in the area of the central arch is approximately the mean thickness of the spray disc. The inside arched central area is preferably free of holes.

The at least one curved area is preferably located or the spray disc in the starting position without a pretension in front. Because of this relaxed position of the spray disc keeps them in the absence of external influences their position optimized for the normal shower process at. A jump back from the depressed state by removing the indentation force is especially defined and determines when the spray disc is in one position can jump in which they have no significant force is exposed.

A curvature of the at least one area outwards can preferably be about 2% to 15% of the diameter of the area amount, i.e. the clear height of the curvature maximum about the level of material weakening is about this proportion of the diameter of the area. As 7% to 10% are considered particularly advantageous.

A curvature of the at least one area after the Pressing inward can occur approximately in the area of the expansion Curvature to the outside. A change between two such positions produce a cracking or cracking effect, which as many advantages of the invention in terms of limescale removal is considered sufficiently fulfilling. The jump or the crack takes place in a maximum force that at every jump is happening. The force maxima can depending on the direction of movement of the spray disc be large and / or different Deflections occur. The course of the curvature, in particular the strongly tapered part of the spray disc can an angle of approximately 10 ° with the plane of the material weakening lock in.

The impression force for an area is preferably in a range between 10 N and 120 N, in particular approximately between 30 N and 90 N, particularly advantageous at approx. 77 N. This is seen as a range of forces in which, on the one hand the force by a user without great effort Finger pressure can be applied, on the other hand, a Limescale detachable snap-off process achieved. A restoring force of the area lies in a range between 5 N and 60 N, in particular approximately between 10 N and 50 N, particularly advantageous at approx. 45 N.

The shower device is preferably designed as a shower head, especially as a head or side shower, for connection to a fixed wall connection, via a ball joint is adjustable in a certain range and has a round perforated spray disc, the diameter of which is about 26 mm and the one by means of a kind of film hinge impressible surface area stored in a massive ring having.

These and other features go beyond the claims also from the description and the drawings, wherein the individual features individually or separately several in the form of sub-combinations in one embodiment of the invention and in other fields be and advantageous as well as protective designs can represent, for which protection is claimed here. The division of the application into individual sections as well Inter-headings limit those made under them Statements are not generally applicable.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

zeigt einen Schnitt durch eine erfindungsgemäße Brauseeinrichtung mit einer Wasserdurchlaßkanäle aufweisenden Strahlscheibe;

Fig. 2

eine Ansicht der Brauseeinrichtung von unten, mit einer mittig in einem Flansch sitzenden Strahlscheibe;

Fig. 3

einen Schnitt durch den unteren Teil einer Brauseeinrichtung gemäß Fig. 1 mit einer durch eine Eindrück-Kraft nach innen gewölbten Strahlscheibe und

Fig. 4

ein Auslenkungs-Eindrück-Kraft-Diagramm, das beispielhaft einen Verlauf einer an die Strahlscheibe anzulegenden Kraft in Relation zu der Auslenkung als Weg darstellt.

An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:

Fig. 1

shows a section through a shower device according to the invention with a jet disc having water passage channels;

Fig. 2

a view of the shower device from below, with a jet disc seated centrally in a flange;

Fig. 3

a section through the lower part of a shower device according to FIG. 1 with a spray disc curved inwards by an indenting force and

Fig. 4

a deflection-indentation-force diagram, which exemplifies a course of a force to be applied to the jet disc in relation to the deflection as a path.

DESCRIPTION OF A PREFERRED EMBODIMENT

1 shows in section an inventive shower head trained shower device 11, which is a conical has expanded housing 12. Sits in this housing 12 partially sunk an essentially spherical joint piece 13, the upward in a substantially cylindrical Pipe attachment 14 merges. This pipe extension 14 has in Inside a thread 15 in which one with a suitable Mating thread provided connector 16 are screwed can. This one with a continuous bore Connector 16 can be, for example, a wall excellent water connection for a overhead shower.

Shower water through an upstream mixer tap or the like have a temperature desired by a user can, passes through the hollow connector 16 in the a through hole provided joint piece 13. The connection between connection piece 16 and pipe socket 14 can be sealed to the outside by a sealing ring 17 be. The bore 18 through the spherical joint piece 13 can from the one-piece molded pipe lug 14 be graduated with decreasing bore diameters. Thereby it is possible to use 13 inserts or the like in the joint piece. bring in by the protruding shoulders of the tapered bore diameter against that in Fig. 1 of water pressure occurring above are maintained.

The joint piece 13 is from below through an opening 19 in inserted the housing 12 with the pipe socket 14 in advance. Of the The diameter of the opening 19 is slightly above that of the Pipe attachment 14, but a bit below the diameter of the preferably rotationally symmetrical joint piece 13. As a result, the joint piece 13 sits in abutment with the rotating one Edge of the opening 19. For sealing the connection between joint piece 13 and housing 12 is in a groove 20, the downward to the opening 19 in the housing 12th revolves, a round cord sealing ring 21 inserted. It exists preferably made of rubber or the like. The round cord sealing ring 21 is by beating both an upper edge of a pot-shaped Insert 22 and by an upper edge a cylindrical tube section 23 in the thereby formed Groove 20 held. The cylindrical one encloses Pipe section 23, the cup-shaped insert 22, where the walls of the two parts at least in sections touch. Over a projecting shoulder in the inner wall of the pipe section 23, which in a corresponding Taper in diameter of the outer wall of the insert 22 engages non-positively, the insert 22 through the pipe section 23 against the round cord sealing ring 21 pressed.

Furthermore, the insert 22 has one in the upper Area tapering downwards towards the inside diameter a contact zone 24 on the outside diameter of the joint piece 13 abuts. The joint piece 13 is thus seated fixed in the housing 12, and has neither axially nor radially a range of motion. However, it can be about the Center of its spherical outer surface in are rotated or swiveled within a certain range of rotation, the outlet opening of the hinge piece 13 in each Swivel position remains completely free. By opening the tiered Hole 18 in the joint piece 13 enters the shower water down and into the pot-shaped insert 22 on. This is provided with a ring of holes 25 which is mounted centrally in the insert. The diameter this ring 25 is larger than that of the opening of the bore 18 down. In the space between the insert 22 and the hinge piece 13, the shower water can be soothed to finally through the wreath of holes 25 down into to emerge in a substantially calm state.

The cylindrical tube section 23 follows at the bottom an essentially vertically protruding flange 27, which bears against the housing 12 at its outer end. Inside the tube section 23 is a thin-walled Jet disc 28 included. The three parts are in one piece as a unit by injection molding from a thermoplastic Molded plastic. The transition between the Pipe section 23 and the jet disc 28 is one Material weakening 29 formed the round jet disc 28 encloses. In its outer area it shows approximately conical outwardly curved jet disc 28 an inclination to the level of the material weakening 29 at about 10 ° lies. In this essentially weakly tapered Area, the spray disc 28 has three rows of concentric Holes 31 on which are essentially the water passage channels form for the shower device 11. After that the jet disc merges into an area that forms a contact surface 32. Runs in its outer area they are substantially perpendicular to the longitudinal axis 30. Am Transition between the chamfered area with the holes 31 and the contact surface 32 is a circumferential stiffening ring 33 molded on, namely on the bottom or Outside of the spray disc 28.

A central region 34 of the contact surface 32 is on the inside arched. This central area 34 is from a ring of Surround holes 35, but has no holes itself. On a spray access can be placed through the Sinking in the curvature cannot be felt with the finger.

Shower water coming from the insert 22 comes from above through the holes 31 and 35 of the spray disc from the shower device 11 out. The holes 31 and 35 can be such be mounted in the jet disc 28 that they by convert shower water that passes through into shower jets, which depend on their design in a certain Area can be aligned. The holes 31 and 35 can Achieving different types of shower jets differently be carried out, especially with regard to their diameter and their direction of bore through the jet disk 28.

The connection of the pipe section 23 to the housing 12 takes place via an external thread 36 on the pipe section, which in a corresponding thread on the inside of the housing 12 can be screwed. With a conical version of the housing 12 according to FIG. 1, the internal thread 37 of the housing 12 as an additional cylinder section on the Housing be molded. The pipe section 23 is so far in the housing 12 screwed in that it is together with the insert 22 non-positively on the round cord sealing ring 21 is present. To screw the pipe section 23 into the To facilitate housing 12 can attack 27 in the flange be provided for tools. 1 are these as cup-shaped, essentially cylindrical, Recesses 38 carried out in the manner of blind holes.

The average wall thickness of the spray disc 28 is approximately 0.7 mm, in the area of material weakening, however, with only approx. 0.2 mm. The width of the formed by the material weakening 29 Film hinge is approximately 0.5 mm to 1 mm and corresponds approximately the material thickness of the jet disc 28. The circumferential stiffening ring 33 has a maximum material thickness of approx. 1.2 mm and is semicircular Cross-section quasi placed on the outside of the spray disc educated. The diameter of the contact surface is approx. 10 mm, the diameter of the bulging central area approx. 4 mm. The curvature of the central area 34 rises maximum approx. 0.5 mm above the level of the contact surface 32 the water passage channels forming holes 31 and 35 are at the shower device 11 shown in FIG Diameter executed the same, this diameter at 1.1 mm. The holes in the rim 25 of the cup-shaped Insert 22 have a diameter of about 2 mm.

The diameter of the spray disc is approx. 26 mm Outside diameter of the flange 27 approx. 45 mm. The outer radius the circumferential stiffening ring 33 is approximately 1.2 mm, whose diameter is about 11 mm, the inner radius of one Groove which the material weakening 29 compared to the Jet disc 28 forms at about 1 mm. The clear height of the Contact surface 32 of the jet disc 28 above the plane of the film hinge 29 is about 1.0 mm.

The connector 16 and the hinge piece 13, which is in one piece connected to the tube insert 14 are preferably made of Made of metal. Brass is particularly suitable for this, that is surface-treated, for example, with chrome plating is. The remaining parts of the shower device 11 exist made of plastic, both polyoxymethylene and are suitable Polypropylene.

2 shows the shower device 11 from below, like it presents itself to a user. Thereby the rotational symmetry clear. The flange 27 has six depressions 38 for creating tools for screwing in the Pipe section 23 in the housing 12. Inside the wells 38 the material weakening 29 runs with a Width of about 2 mm. It encloses the jet disc 28, the is provided with three concentric rows of holes 31. As you can see, the holes in each row are staggered attached to those of the adjacent rows. Within the concentric rows of holes 31 runs the circumferential Stiffening ring 33, which extends over a width of about 2 mm extends. It encloses the contact surface 32 with a Wreath of holes 35 is provided. This wreath surrounds the arched central area 34.

3 shows in section the lower part of a shower device 11 corresponding to FIG. 1, in which the jet disc 28th has been pressed inwards by an indentation force E. As you can see, it is curved inwards. The angle that an area of the jet disc 28 that is between the material weakening 29 and the stiffening ring 33 and is approximately rectilinear and slightly conical, with the plane of the Includes material weakening 29, is approximately 12 °. He can also be less. The jet disc 28 therefore bulges when jumping inwards a little further inside than in the starting position to the outside. The clear height of the Reinforcing ring 33 above the level of the film hinge 29 is approx. 0.9 mm, the clear height of the contact surface 34 is approx. 1.6 mm.

With the curvature inwards and especially with the jumping process There may be a slight change between the two positions the diameter of holes 31 and 35 occur, however is not shown in FIG. 3. Such A narrowing of the diameter leads to the detachment of deposits within the holes, and is therefore called viewed advantageously.

From the deflection-indentation-force diagram in FIG. 4 you can see the course of the indentation force E. The deflection begins in the plane of the contact surface 32 in the Starting position according to FIG. 1, in particular in the area of Stiffening ring 33. The curve of the indentation force E begins at the origin and then rises steeply with decreasing slope until a snap point 40 at an apex reached. The indentation force E has risen to approx. 77 N, while the deflection at this point is roughly the same clear height of the contact surface 32 above the level of material weakening 29 corresponds. It is approximately 1.0 mm. Of this From point 40, the force curve increases with increasing Steep downward deflection. That means that after the Passing the snap point 40 the further deflection of the Spray disc inwards with considerably less effort is possible, the maximum force has happened. The curve ends in the position of the inner curvature of the spray disc Fig. 3, wherein the total deflection is approximately 2.6 mm. The Force, which is necessary, the jet disc 28 in this position to hold is about 45 N.

The force curve forms a kind of hysteresis by Springback process of the jet disc 28 a different course exhibits than during the indentation process. From the point of maximum The curvature going inwards increases the force decreasing deflection again, but not so strongly like in the upper part of the curve. As a result, the curve reaches at the snap-back point 41 only a smaller force than at the snap-in point 40. This force can be, for example, around 55 N. lie. It forms another force maximum, namely that for the springback process. The curve shows when passing their two maxima 40 and 41 have a rounded shape, which, however, can also be rather pointed.

The snap point 40 that the spray disc 28 when pressed happens with the same deflection as the Snap point 41 lie. These are the points that depending on the displacement at which moment is happening in which the spray disc 28 snaps and also under Under certain circumstances, a clearly audible noise is generated.

As the force curve progresses with decreasing deflection the force also decreases and runs to the origin purely.

This diagram shown in Fig. 4 is despite the exact one To give information about force and deflection schematically, because the shape and the course of the individual curve sections various design options of the invention can be varied. Furthermore, it is not necessarily requires snap point 40 and snap back point 41 are at the same deflection.

It is important that the course of the force curve is at least four Has sections. There are at least two sections each for the movement process of the jet disc 28 at Jump in and jump out provided. They are at the origin and connected at the end point of the maximum deflection, and are respectively by the snap point 40 and the snap back point 41 interrupted. It is important that the force in the Snap point 40 lies above the force in snap-back point 41.

In a preferred embodiment of the invention created an overhead shower as a shower device 11, the one flexible and pushable spray disc 28 with a curvature to the outside. The spray disc is by means of a formed by a material weakening 29 film hinge in a flange 27 of a pipe section 23 in the housing 12 the overhead shower stored. Through the formation of the curvature and the jet disc can be stored by applying a Impression force against an abutment surface 32 in one Jumping action can be pressed in. After removing the She jumps again by force in another jump back to the starting position. Thereby a Force maximum happens.

The cracking process removes limescale and other deposits i.a. blasted off at holes 31, 35 of the jet disc or replaced.

Claims (17)

Shower facility with a flexible and flat Jet disc (28), at least one area the spray disc is curved outwards and when exceeded a certain impression force exerted on him (E) abruptly with the bulge inwards jumps around a space behind and when the force is released jumps back to the starting position by itself. Shower device according to claim 1, characterized in that the at least one area with one Finger is pushable, and preferably the surface of the Jet disc (28), in particular the at least one Area, is larger than a fingertip, whereby the jet disc preferably has a defined contact surface (32) for a finger to apply a force has, the contact surface in particular smaller is as the area district. Shower device according to claim 1 or 2, characterized through a jet disc (28) with at least one Material weakening (29) along an essentially closed line, the material weakening, especially as a thinning of material, in one Range between 10% and 60% of the average thickness of the Spray disc, preferably between about 20% and 40%, lies. Shower device according to one of the preceding claims, characterized in that the jet disc (28) has an outer edge and a material weakening (29) runs on the outer edge of the spray disc. Shower device according to one of the preceding claims, characterized in that it is a massive Has component that is on the outside of an outer material weakening (29) connects the jet disc (28), preferably framed the jet disc, in particular is integrally connected to it, the material weakening preferably runs in a ring and you Center of area with the center of area of Contact surface (32) coincides. Shower device according to claim 5, characterized in that the solid component has a cylindrical tube section (23), preferably with a Shower housing (12) is connectable, and / or one connect to the spray disc (28) towards the outside massive flange (27), preferably with the Shower housing (12) is connectable. Shower device according to one of claims 2 to 6, characterized in that the contact surface (32) of a stiffening, in particular a stiffening ring (33), is framed, preferably one Diameter from about 5 mm to 15 mm, especially about 8 mm to 10 mm, and preferably not after is domed on the outside. Shower device according to one of claims 3 to 7, characterized in that the jet disc (28) a average material thickness in the range of 0.4 mm to 1 mm, in particular about 0.7 mm. Shower device according to one of claims 3 to 8, characterized in that the wall thickness of the material weakening (29) between 0.1 mm and 0.5 mm, in particular approximately between 0.2 mm and 0.3 mm. Shower device according to one of claims 3 to 9, characterized in that the material weakening (29) a diameter of about 10 mm to 60 mm, in particular about 20 mm to 40 mm. Shower device according to one of the preceding claims, characterized in that the jet disc (28) made of plastic, in particular a thermoplastic Plastic, and flexibility due to the low material thickness of the spray disc is trained. Shower device according to one of claims 3 to 11, characterized by holes (31,35) within the Material weakening (29), especially within the Contact surface (32), which is preferably concentric along Rows are arranged, in particular a Central area (34) of the contact surface, preferably a hole-free central area, is curved inwards. Shower device according to one of the preceding claims, characterized in that the at least one curved area in the starting position without pre-tensioning is present, preferably a curvature of the at least one area to the outside about 2% to 15%, in particular about 7% to 10%, of the diameter of the area is. Shower device according to one of the preceding claims, characterized in that a curvature of the at least one area after indentation internally about 2% to 15%, especially about 7% to 10% of the diameter of the area. Shower device according to one of the preceding claims, characterized in that the at least one arched area with each jump and jump back one force maximum (40, 41) each passes where, in particular, the force maxima depend on the Direction of movement are different. Shower device according to one of the preceding claims, characterized in that the indentation force (E) for an area in a range between 10 N and 120 N, in particular between 30 N and 90 N, lies and / or a restoring force of the area in a range between 5 N and 60 N, in particular between 10 N and 50 N. Shower device according to one of the preceding claims, characterized in that the shower device (11) a shower head with a shower head for Connection to a fixed wall connection (16) is via a Ball joint (13) is directionally adjustable and a round has perforated spray disc (28) which means a kind of film hinge (29) in a massive ring stored depressible area.

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