Sprinkler with volume supply device

Abstract

2.1. The invention relates to a shower head with a shower housing body (1) in which a main channel (2) is formed for guiding a shower fluid from a fluid inlet side (3) to a fluid outlet side (4), and a flow control device which is configured for selectively setting a normal flow rate or an increased flow rate of the shower fluid dispensed at the fluid outlet side (4) that is larger than the normal flow rate by an additional amount, and which has a user-operated switching valve. 2.2. According to the invention, a fluid action unit (5) is arranged in the main channel, and the flow control device has a bypass channel (6) bypassing the fluid action unit, which opens out of the main channel upstream of the fluid action unit and opens into the main channel downstream of the fluid action unit, wherein the user-operated switching valve is a bypass valve (7) for selectively closing or opening the bypass channel. 2.3. Use e.g. as a sanitary hand shower.

Description

[0001] The invention relates to a shower with a shower housing body in which a main channel is formed for guiding a shower fluid from a fluid inlet side to a fluid outlet side, and a quantity switching device which is designed for selectively setting a normal quantity or an increased quantity of the shower fluid that can be delivered at the fluid outlet side, which is greater than the normal quantity, and which has a user-operable switching valve.

[0002] Showerheads of this type are primarily used as sanitary showerheads, for example, as handheld showerheads, where water typically serves as the shower fluid. However, these showerheads are equally suitable for non-sanitary shower applications where any fluid is to be delivered as a shower jet.

[0003] In normal operating mode, the showerhead is capable of delivering the shower fluid in a predetermined amount, i.e., the normal amount. The normal amount is determined, among other things, by the free usable cross-section of the fluid flow upstream of the showerhead and within the showerhead up to a corresponding shower outlet, as well as by the fluid pressure of the shower fluid at and within the showerhead.

[0004] The flow control device enables the showerhead to dispense a certain amount of shower fluid in a special operating mode, i.e., a boosted flow rate. This can be used, for example, in shower situations where the user wants to use relatively little water in the showerhead's normal operating mode, such as in a so-called water-saving mode, but temporarily desires a little more water or a stronger spray in the special operating mode, for example, to wash hair or rinse off shower soap.

[0005] Patent specification DE 40 20 615 C2 discloses a shower of the type mentioned above, which can in particular be a sanitary hand shower, and in which the connecting valve has a valve chamber into which a fluid supply channel opens and from which a valve outlet structure opens, the effective outlet cross-section of which can be varied between a smaller and a larger cross-section by a user-operable, movable valve closing body, in that the valve closing body completely opens the outlet cross-section in one position and at least partially blocks it in the other position. The connecting valve automatically returns from an actuated position, into which it can be brought by the user from an initial position, to the initial position. Depending on the system design, the shower fluid in this shower is dispensed in the normal quantity or in the increased quantity in the initial position of the connecting valve.

[0006] The invention is based on the technical problem of providing a shower of the type mentioned at the outset, which can be realized with relatively low manufacturing expenditure and which enables the optional dispensing of effervescent fluid in the normal quantity or the larger increased quantity in a functionally reliable and simple manner and at the same time has a functional component acting on the effervescent fluid without disturbing the possibility of the increased effervescent fluid dispensing.

[0007] The invention solves this problem by providing a shower head with the features of claim 1. Advantageous developments of the invention are specified in the subclaims, the wording of which is hereby incorporated by reference into the description. This includes, in particular, all embodiments of the invention resulting from the combinations of features defined by the references in the subclaims.

[0008] In the showerhead according to the invention, a fluid action unit is arranged in the main channel, i.e., a component of the showerhead that acts on the flowing fluid. In other words, the showerhead includes, among other things, the fluid action unit. This can be any conventional component, such as a flow regulator, a particle sieve, a filter, a component that mixes an additive into the shower fluid, a backflow preventer, an aerator, etc.

[0009] The flow control device has a bypass channel that bypasses the fluid action unit, exits the main channel upstream of the fluid action unit, and enters the main channel downstream of the fluid action unit. This means that the bypass channel bypasses a section of the main channel containing the fluid action unit. The user-operated connection valve is a bypass valve for selectively closing or opening the bypass channel, i.e., a shut-off valve located in the bypass channel.

[0010] Thanks to this relatively simple design, the flow control device allows the user to channel the effervescing fluid not only through the main channel section containing the fluid action unit, but also via the bypass channel if required. When the bypass channel is closed, this corresponds to the normal operating mode, in which the flow control device dispenses the effervescing fluid in the normal quantity, which is channeled via the main channel with the fluid action unit located therein. When the bypass channel is open, this corresponds to the special operating mode, in which the flow control device provides the effervescing fluid in an additional quantity compared to the normal quantity, whereby the additional quantity is the quantity of effervescing fluid channeled via the bypass channel. The effervescing fluid channeled via the bypass channel remains unaffected by the fluid action unit located in the main channel.

[0011] Thus, with the shower according to the invention, the shower fluid can be dispensed either in the normal quantity only via the main channel or in the larger increased quantity with additional fluid guidance via the bypass channel with relatively low manufacturing effort and reliable functionality.

[0012] In a further development of the invention, the fluid action unit comprises a flow limiter element. This is known to limit the flow and thus the quantity of fluid conveyed in the main channel in a defined, predeterminable manner, for example, to achieve a water-saving function. If more effervescent fluid is desired in certain situations, the relevant additional fluid quantity can be directed via the bypass channel bypassing the flow limiter element. In alternative embodiments, another fluid action unit is arranged in the main channel, e.g., a particle sieve, a filter, a backflow preventer, an aerator, an additive component, or the like. The fluid action unit can also comprise any combination of several of these components.

[0013] In a further development of the invention, the shower is designed as a hand-held shower, wherein the bypass valve is arranged on a handle part of the shower housing body. This can be, for example, a hand-held shower in a shower room or bathroom or a kitchen hand-held shower on the sink in a kitchen. A shower head with the associated shower outlet, which is usually connected to the handle part, can be kept free of the bypass valve. In addition, the arrangement of the bypass valve on the handle part can be advantageous for operation by the user, who usually grasps the handle part of the shower housing body with one hand during use. In alternative embodiments, the bypass valve is arranged, for example, on a shower head part.

[0014] In a further development of the invention, the shower is configured as a hand-held shower, and the bypass channel extends with a predominant part of its channel length in a handle part of the shower housing body, whereby this particularly includes the case that the bypass channel extends with its entire length in the handle part. The bypass channel can, for example, be located in a water guide body which is inserted as an insert part into an outer handle casing of the handle part. Advantageously, the arrangement of the bypass channel in the handle part can be combined with the arrangement of the bypass valve on the handle part of the housing body, although this is not mandatory. In alternative embodiments, the bypass channel can, for example, extend completely or largely in a shower head part of the shower.

[0015] In one embodiment of the invention, the main channel of the shower extends essentially parallel to a longitudinal center axis of the handle part in a radially inner region of the handle part through the handle part, while the bypass channel is located in a region of the handle part radially between the main channel and an outer side of the handle part. For many implementations of the shower head, this represents an advantageous configuration of the fluid guide with the main channel and the bypass channel. Arranging the bypass channel in a region radially offset outwards from the center region of the handle part can also be advantageous for arranging the bypass valve for opening and closing the bypass channel. In alternative embodiments, for example, the bypass channel can run in a radially inner region of the handle part and the main channel can run radially offset outwards, if this is advantageous for corresponding applications.

[0016] In a further development of the invention, the bypass valve has a self-locking closed position and a self-returning open position. The self-locking closed position means that the bypass valve remains in its closed position blocking the bypass channel as long as it is not actuated by the user. The self-returning open position means that the bypass valve automatically returns to its closed position once it has been actuated into its open position by the user and the user has terminated the actuation. This measure has the advantage that the shower automatically returns to its normal operating mode once it has been switched to the special operating mode by the user. In alternative embodiments, the closed position of the bypass valve can be self-returning and the open position self-locking, if this is advantageous for associated applications.In further alternative embodiments, both the closed position and the open position can be designed to be self-locking, so that in this case the user always has to actively operate the bypass valve when he wants to move it from the closed position to the open position or from the open position to the closed position.

[0017] In a further development of the invention, the bypass valve has a valve opening and a user-operable, movable valve flap that interacts with the valve opening and closing. This represents a bypass valve design that is sufficient for many applications, simple to manufacture, and functionally reliable. In alternative embodiments, the bypass valve can be designed in a different conventional manner, e.g., with a more complex valve closing body and associated valve opening or valve seat.

[0018] In one embodiment of the invention, the valve flap is pivotably mounted, i.e., supported. This movement kinematics is comparatively simple to implement and functionally reliable. Alternatively, the valve flap can be mounted in another way, e.g., translationally or rotationally.

[0019] In one embodiment of the invention, the valve flap is motion-coupled to an actuating element, wherein the actuating element is the element to be directly actuated by the user to actuate the valve, i.e., the user interface of the bypass valve. In particular, the actuating element can be a push button, or alternatively, another conventional actuating element, such as a rotary knob or a pull knob. Through the motion coupling, the actuating element activated by the user initiates the movement of the valve flap required to achieve the desired valve function.

[0020] In a further embodiment of the invention, the actuating element is coupled to the valve flap via a leaf spring element. The leaf spring element can be deformed by the actuating element from a self-retaining initial position into a self-returning actuating position. The spring-elastic properties of the leaf spring element thus advantageously ensure that the bypass valve can return automatically from its open position to its closed position when required, without the user having to actively initiate this. It is then sufficient for the user to simply release the actuating element. Alternatively, the user can overcome the spring force of the leaf spring element to move the valve flap, and thus the valve flap, from the initial position into the actuating position. In alternative embodiments, the valve flap is coupled to the actuating element in a different, conventional manner, e.g.via a lever coupling, a gear coupling, etc.

[0021] In a further embodiment of the invention, the valve flap is formed integrally with the leaf spring element. This enables simple production of the leaf spring element and the valve flap as a single component and also avoids the assembly effort required to couple the valve flap to the leaf spring element during shower head manufacture. In alternative designs, the valve flap forms a separate, independent component from the leaf spring element and is coupled to the leaf spring element during shower head assembly.

[0022] In one embodiment of the invention, the leaf spring element is mounted at two bearing points spaced apart in its longitudinal direction and is rotatably mounted at least at a first of the two bearing points. The actuating element is configured to act on a force application area of ​​the leaf spring element located between the two bearing points in a direction transverse to the longitudinal direction of the leaf spring element. The valve flap is coupled in motion to the leaf spring element at its first bearing point. This represents a very advantageous embodiment of the actuating configuration for the valve flap.

[0023] If required, this implementation offers the option of mounting the leaf spring element in such a way and operating it with the actuating force from the user that it jumps or folds between a concave and a convex curved course when it is actuated between its initial position and its actuated position. This means that the user can hold the bypass valve in the actuated position with less holding force than is required to actuate the bypass valve from the initial position, i.e. closed position, to the actuated position, i.e. open position. Despite this folding of the leaf spring element, the actuated position, i.e. open position, of the bypass valve can also be designed to be self-returning in this case, if required. In alternative designs, the leaf spring element is, for example, only mounted or folded on one side.clamped and can be moved elastically at its other end area, in particular pivotally deformed.

[0024] Advantageous embodiments of the invention are illustrated in the drawings. These and other advantageous embodiments of the invention are described in more detail below. Herein: Fig. 1 a perspective view of a shower according to the invention, Fig. 2 a schematic, partial longitudinal sectional view of a part of interest here of a shower according to the invention with a bypass valve in the closed position and Fig. 3 the view of Fig. 2 with the bypass valve open.

[0025] The shower head according to the invention can be, for example, a sanitary shower head, or alternatively, a shower head for a non-sanitary application where a shower jet from a specific shower fluid is required. The shower head according to the invention can, for example, be a hand shower, as shown in Fig. 1 shown as an example, for a shower room or on a bathtub, alternatively a shower head or side shower of a shower room or a kitchen shower. Fig. 1 The hand shower shown has, in a conventional manner, a shower housing body 1 with a handle portion 1a and an adjoining shower head portion 1b. The shower fluid can be any fluid depending on the application; in sanitary applications, it is usually water.

[0026] The Fig. 2 and 3show a longitudinal section of a part of a water guide body 1' of a shower according to the invention for an exemplary embodiment. The water guide body 1' can, for example, be integrated into the handle part 1a of the shower of Fig. 1 and thereby form a corresponding part of a shower housing body 1 of the shower. Alternatively, the shower housing body 1 can contain a structure corresponding to the water guide body 1', permanently integrated in its interior, in particular in the interior of its handle part 1a. Further alternatively, the water guide body 1' can be inserted into a handle part of another shower or into another component of a shower designed according to the invention.

[0027] As can be seen from the Fig. 1 bis 3 As can be seen, a main channel 2 for guiding a shower fluid from a fluid inlet side 3 to a fluid outlet side 4 is formed in the shower housing body 1 of the shower according to the invention. In the example shown, the shower housing body 1 or the water guide body 1' has a screw connection thread 14 on the fluid inlet side 3, to which a fluid-supplying hose can be connected. Furthermore, the shower comprises a quantity control device which is designed to optionally set a normal quantity or an additional quantity greater than the normal quantity of the shower fluid that can be delivered at the fluid outlet side 4, and which has a user-operable control valve.

[0028] A fluid action unit 5 is arranged in the main channel 2. The flow control device has a bypass channel 6 which bypasses the fluid action unit 5 and opens out of the main channel 2 upstream of the fluid action unit 5 and opens back into the main channel 2 downstream of the fluid action unit 5. The user-operated connection valve is a bypass valve 7 for selectively closing or opening the bypass channel 6, wherein the bypass valve 7 is Fig. 2 in closed position and in Fig. 3 shown in open position.

[0029] In the sectional view of the Fig. 2 and 3 The components and the constructive implementation of the flow control device are shown for an exemplary example. It is understood that this implementation of the flow control device does not apply to the Fig. 1 shown showerhead, ie this special design of the flow control device can also be used in other implementations of the showerhead according to the invention. Furthermore, it is understood that the showerhead according to the invention is not limited to the implementation of the flow control device shown in the Fig. 2 and 3 to be recognized special design is limited.

[0030] In advantageous embodiments, the fluid action unit 5, as in the example shown, comprises a flow limiter element 8. Optionally, the fluid action unit 5 has one or more further conventional components not shown here, such as a throttle element, a particle sieve, a check valve, an aerator element, or a unit for admixing an additive to the effervescing fluid conveyed in the main channel 2. Alternatively, the fluid action unit 5 can comprise one or more such components without the flow limiter element 8.

[0031] The flow limiter element 8 serves, as usual, to limit the free flow cross-section of the main channel 2 available for the flow of the shower fluid, and thus the quantity or flow rate of shower fluid flowing in the main channel 2, to a value that can be determined by means of the flow limiter element 8. In an alternative embodiment, the fluid action unit 5 includes a throttle element that narrows the passage cross-section or flow cross-section of the main channel to such an extent that only a small amount of fluid can pass through in order to provide a trickling or weakly spraying shower jet.

[0032] If the bypass valve 7 keeps the bypass channel 6 closed, as in Fig. 2 As shown, the shower fluid flows exclusively through the main channel 2 from the fluid inlet side 3 to the fluid outlet side 4 of the shower. In the present case, this operating state with the bypass channel blocked is referred to as the normal operating mode without restriction of generality, and the quantity of shower fluid flowing through the main channel 2, including the area containing the fluid action unit 5, is referred to as the normal quantity.

[0033] If the bypass valve 7 is moved from this closed position into its open position opening the bypass channel 6 by corresponding user operation, as in Fig. 3 As shown, the effervescent fluid additionally flows via the bypass channel 6, so that in this case the amount of effervescent fluid that can be discharged at the fluid outlet side 4 is greater by the additional amount flowing through the bypass channel 7 than the normal amount of effervescent fluid that flows through the main channel 2 in the area of ​​the fluid action unit 5 bypassed by the bypass channel 6. In the present case, this operating state with the bypass channel 6 open is also referred to as a special operating mode, again without restriction of generality.

[0034] In corresponding embodiments, the shower is, as in the example of Fig. 1 shown, a hand shower. The bypass valve 7 is arranged on the handle part 1a of the shower housing body 1, and / or the bypass channel 6 extends with a predominant portion of its channel length within the handle part 1a. In the example shown, both alternatives are implemented. Preferably, the bypass channel 6 extends entirely, ie, with its entire channel length, within the handle part 1a, as in the example shown.

[0035] In advantageous embodiments, the main channel 2 extends substantially parallel to a longitudinal center axis LG of the handle part 1a in a radially inner region thereof through the handle part 1a, and the bypass channel 6 is located in a region of the handle part 1a radially between the main channel 2 and an outer side 9 of the handle part 1a, as in the example shown.

[0036] In corresponding implementations, the bypass valve 7, as in the example shown, has a self-locking closed position and a self-returning open position. This means that the bypass valve 7 keeps the bypass channel 6 closed as long as it is not actuated by the user, and that it automatically returns to its closed position without active actuation by the user if it has been actuated into its open position by the user and the user then stops this actuation.

[0037] In corresponding embodiments, the bypass valve 7, as in the example shown, has a valve opening 10 and a user-operable, movable valve flap 11 that interacts with the valve opening 10 to open and close it. In other words, in this case, the valve flap 11 forms a movable valve closing body for the bypass valve 7, which can be switched between a closed position and an open position by the user.

[0038] Optionally, a conventional seal is arranged at the valve opening 10, e.g. as a valve seat for the valve flap 11, in the example shown an O-ring 16. Additionally or alternatively, the valve flap 11 can be provided with a seal on its side facing the valve opening 10.

[0039] In corresponding embodiments, the valve flap 11 is pivotally mounted, as in the example shown. Additionally or alternatively, the valve flap 11 is motion-coupled to an actuating element 12 of the flow control device or the bypass valve 7, as also realized in the example shown. The actuating element 12 can be any conventional valve actuating element, in particular a push button 12', as in the example shown. To open the bypass valve 7, the user presses the push button 12' from an extended position according to Fig. 2 into a retracted position according to Fig. 3 Alternatively, the actuating element 12 can also be, for example, a pull knob, a rotary knob, a rocker lever, an actuating slide, etc.

[0040] In advantageous embodiments, the actuating element 12, as in the example shown, is coupled to the valve flap 11 via a leaf spring element 13 of the flow control device or the bypass valve 7, wherein the leaf spring element 13 can be deformed by the actuating element 12 from a self-holding starting position into a self-returning actuating position. This means that the leaf spring element 13 remains in its starting position as long as it is not deformed into the actuating position by the user via the actuating element 12, and that it automatically returns from its actuating position to its starting position without active user influence if and as soon as the user no longer exerts any actuating influence on the leaf spring element 13.

[0041] As a result, the leaf spring element 13 is able to initiate the self-return of the bypass valve 7 from its open position to its closed position.

[0042] In an advantageous implementation, the valve flap 11 is formed in one piece with the leaf spring element 13, i.e. the two components are part of a single component and therefore do not need to be assembled together during the manufacture of the shower.

[0043] In advantageous embodiments, as in the example shown, the leaf spring element 13 is clamped at two bearing points 13a, 13b spaced apart in its longitudinal direction LB, wherein it is rotatably mounted at least at a first bearing point 13a of its two spaced-apart bearing points 13a, 13b. Accordingly, the actuating element 12 is configured to act on a force application region 13c of the leaf spring element 13 located between the two bearing points 13a, 13b in a direction transverse to the longitudinal direction LB of the leaf spring element 13. The valve flap 11 is motionally coupled to the leaf spring element 13 at its first bearing point 13a.

[0044] The bearing points 13a, 13b are supported on supports 15a, 15b formed for this purpose in the shower housing base body 1, so that the respective combination of bearing point 13a, 13b of the leaf spring element 13 and support 15a, 15b forms a fixed bearing that allows a local rotational movement of the leaf spring element 13 at the respective bearing point 13a, 13b. In the example shown, the leaf spring element 13 and the supports 15a, 15b are arranged in the bypass channel 6 or in a receiving space fluidly connected thereto and are therefore located in the shower fluid during operation of the shower, i.e., are surrounded by it.

[0045] This structural design of the combination of leaf spring element 13 and actuating element 12 contributes to a functionally reliable and user-friendly actuation behavior for the actuation of the bypass valve 7. When the user exerts an actuating force on the leaf spring element 13 via the actuating element 12 in the force application area 13c transverse to the longitudinal direction LB of the leaf spring element 13, this results in a corresponding deformation of the leaf spring element 13 both between its two bearing points 13a, 13b and at least at its rotatably mounted first bearing point 13a. The latter then causes the desired movement of the valve flap 11, coupled to the first bearing point 13a of the leaf spring element 13, from its closed position to its open position.

[0046] The leaf spring element 13 can be made of a suitable plastic or metal material as desired; the same applies to the valve flap 11 coupled to it and possibly formed in one piece with it.

[0047] With appropriate design and mounting of the leaf spring element 13, for example as shown in the Fig. 2 and 3As can be seen, during actuation, the leaf spring element 13 folds between a convex profile in the valve open position or valve closed position and a concave profile in the valve closed position or valve open position. This can offer the user favorable actuation kinematics and convey haptic feedback about the valve actuation. Furthermore, in this case, if desired, the holding force with which the user can hold the bypass valve 7 in the open position via the actuating element 12 can be kept lower than the actuating force that the user must apply to switch the bypass valve 7 from its closed position to its open position. The higher actuating force is necessary for folding the leaf spring element 13 from one curvature to the other and is caused in particular by clamping the leaf spring element 13 between the supports 15a, 15b.

[0048] In the example shown, bypass channel 6 flows, as can be seen from the Fig. 2 and 3 visible, with an inlet-side section 6a parallel to the main channel 2 from an upstream section of the main channel 2 of larger diameter, on which the hose connection thread 14 is formed. In alternative embodiments, the bypass channel 6 can also branch off transversely to the main channel 2, as for an exemplary implementation by a Fig. 2 and 3 Channel course 6'a indicated by dashed lines. Alternatively, an oblique outlet and / or inlet of the bypass channel 6 from or into the main channel 2 is possible.

[0049] With an outlet-side section 6b, the bypass channel 6 opens back into the main channel 6 downstream of the area containing the bypassed fluid active element 5, transversely to the main channel 6. With an intermediate, central channel section 6c, the bypass channel 6 again runs essentially parallel to the main channel 6. The valve opening 10, which can be shut off by the valve flap 11, is located on the inlet side of the outlet-side section 6b of the bypass channel 6, which runs transversely to the longitudinal direction of the main channel 6.

[0050] In corresponding embodiments, the actuating element 12, in the example shown the push button, is arranged on the handle part 1a of the shower housing body 1, preferably with an actuating direction extending transversely to the longitudinal center axis LG of the handle part 1a. This contributes to an advantageously simple operation of the actuating element 12 by the user, who typically grasps the hand shower by the handle part 1a with one hand. In this case, the user can actuate the actuating element 12 with one or more fingers of the hand grasping the handle part 1a, in particular with their thumb or index finger.

[0051] Optionally, the leaf spring element 13 is designed to be slotted or provided with a guide slot into which a guide element engages, so that the leaf spring element 12 is additionally guided during its deformation movement between its initial position or valve closing position and its actuating position or valve opening position.

[0052] As the embodiments shown and the further embodiments explained above make clear, the invention provides a shower which, in a manufacturing-technically and functionally advantageous manner, enables an increase in the amount of shower fluid released by the shower which can be switched on by the user.

Claims

1. Shower, in particular a sanitary shower, with - a shower housing body (1) in which a main channel (2) is formed for guiding a shower fluid from a fluid inlet side (3) to a fluid outlet side (4), and - a quantity control device which is designed to selectively set a normal quantity or an additional quantity of the shower fluid that can be delivered at the fluid outlet side (4) that is greater than the normal quantity and has a user-operable connection valve, characterized in that - a fluid action unit (5) is arranged in the main channel (2), - the quantity switching device has a bypass channel (6) which bypasses the fluid action unit (5), which opens out of the main channel (2) upstream of the fluid action unit (5) and opens into the main channel (2) downstream of the fluid action unit (5), and - the user-operable switching valve is a bypass valve (7) for selectively closing or opening the bypass channel (6).

2. Shower according to claim 1, further characterized in that the fluid action unit (5) comprises a flow limiting element (8).

3. Shower according to claim 1 or 2, further characterized in that it is a hand shower, wherein the bypass valve (7) is arranged on a handle part (1a) of the shower housing body (1) and / or the bypass channel (6) extends with a predominant part of its channel length in the handle part (1a).

4. Shower according to claim 3, further characterized in that the main channel (2) extends substantially parallel to a longitudinal center axis (LG) of the handle part (1a) in a radially inner region thereof through the handle part (1a) and the bypass channel (6) is located in a region of the handle part (1a) radially between the main channel (2) and an outer side (9) of the handle part (1a).

5. Shower according to one of claims 1 to 4, further characterized in thatthe bypass valve (7) has a self-locking closed position and a self-returning open position.

6. Shower according to one of claims 1 to 5, further characterized in that the bypass valve (7) has a valve opening (10) and a user-operable, movable valve flap (11) which cooperates with the latter to open and close it.

7. Shower according to claim 6, further characterized in that the valve flap (11) is pivotally mounted and / or is motion-coupled to an actuating element (12), in particular a push button.

8. Shower according to claim 7, further characterized in that the actuating element (12) is coupled to the valve flap (11) via a leaf spring element (13), wherein the leaf spring element (13) can be deformed by the actuating element (12) from a self-holding initial position into a self-returning actuating position.

9. Shower according to claim 8, further characterized in thatthe valve flap (11) is formed integrally with the leaf spring element (13).

10. Shower according to claim 8 or 9, further characterized in that - the leaf spring element (13) is mounted on two bearing points (13a, 13b) spaced apart in its longitudinal direction (LB) and is held so as to be rotatable at least at a first (13a) of the two bearing points (13a, 13b), - the actuating element (12) is designed to act on a force application region (13c) of the leaf spring element (13) lying between the two bearing points (13a, 13b) in a direction transverse to the longitudinal direction (LB) of the leaf spring element (13), and - the valve flap (11) is movement-coupled to the leaf spring element (13) at its first bearing point (13a).

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