Sanitary outlet unit having a receiving geometry

Abstract

The invention relates to a sanitary outlet unit (1) having a fastening element (2), in particular a thread (2), and a gripping surface (3). The invention addresses the problem of further improving the usage properties of sanitary outlet units. This problem is solved in that the sanitary outlet unit (1) has an internal receiving geometry (30) for an installation tool (31).

Description

[0001] PC 25 2279 C 14 January 2026

[0002] Sanitary outlet unit with receiving geometry

[0003] The invention relates to a sanitary outlet unit with a fastening element, in particular a thread, and a

[0004] Gripping surface.

[0005] The invention further relates to a sanitary fitting with a sanitary outlet unit described herein.

[0006] The invention further relates to an assembly tool for a sanitary outlet unit described herein.

[0007] The invention further relates to a system comprising the sanitary outlet unit or sanitary fitting described herein and an assembly tool.

[0008] The invention also relates to a series of sanitary outlet units, comprising at least two variants of sanitary outlet units, wherein a first variant is a sanitary outlet unit described herein.

[0009] Furthermore, the invention relates to a method for forming or disassembling a sanitary fitting with the sanitary outlet unit described herein using an assembly tool.

[0010] Sanitary outlet units of the type mentioned above are used at the water outlet of sanitary fittings and serve to shape the water jet flowing through the sanitary fitting. The outlet units can be designed to shape the water jet, for example, using an aerator. The outlet units can also be designed to... PC 25 2279 C 2 / 63 14 . January 2026

[0011] To aerate the water jet, for example using a disassembly unit, and / or to limit or reduce the flow rate.

[0012] From DE 10 2022 106 102 Al, a sanitary outlet unit with a thread and a gripping surface is known, in which the thread is at least partially made of a hard component and the gripping surface is at least partially made of a soft component. By holding the gripping surface and turning the sanitary outlet unit, it is intended to be possible to screw the sanitary outlet unit in and / or out of a sanitary fitting.

[0013] Sanitary outlet units, particularly in the form of mouthpieces, are also known which are made entirely of hard components, for example, sanitary outlet units made of metal or sanitary outlet units made of particularly hard plastic.

[0014] Some sanitary outlet units of the known type feature an external mounting geometry for an installation tool. An external mounting geometry can result in a smaller flow cross-section of the sanitary outlet unit compared to a sanitary outlet unit without an external mounting geometry. Furthermore, some users may find an external mounting geometry aesthetically unappealing. Therefore, it may be desirable to omit an external mounting geometry.

[0015] Occasionally, the undamaged installation and / or removal of sanitary outlet units, especially those lacking a mounting geometry for an installation tool, proves challenging, particularly when limescale deposits have formed on the sanitary outlet unit. PC 25 2279 C 3 / 63 14 January 2026

[0016] The invention is based on the objective of further improving the performance characteristics of sanitary outlet units. In particular, a sanitary outlet unit is to be provided which is easy to assemble and / or disassemble and at the same time provides a large flow cross-section for the water jet exiting the sanitary outlet unit.

[0017] To solve the aforementioned problem, the features of the independent claims are provided according to the invention. In particular, to solve the aforementioned problem in sanitary outlet units of the type described above, it is proposed according to the invention that the sanitary outlet unit has an internal receiving geometry for an assembly tool.

[0018] The fastening element serves to secure the sanitary insert unit into a fitting of a sanitary fitting. The fastening element can, in particular, be a threaded connection that allows the sanitary insert unit to be screwed into a fitting, especially into a mating thread, particularly that of a water outlet of a sanitary fitting. In addition to or as an alternative to the thread, other fastening elements are also conceivable. For example, the sanitary insert unit can be secured into a fitting using a bayonet fitting.

[0019] The gripping surface can be grasped by the user with one hand when placing the assembly tool on the sanitary outlet unit and / or operating the assembly tool, for example to guide the sanitary outlet unit and the assembly tool towards each other and / or to attach the sanitary outlet unit, in particular together with the PC 25 2279 C 4 / 63 14 January 2026

[0020] Mounting tool to be brought to and / or attached to a water outlet of a sanitary fitting.

[0021] The internal mounting geometry can accommodate an assembly tool with which the sanitary outlet unit is screwed into or unscrewed from the water outlet of a sanitary fitting.

[0022] For easy assembly and / or disassembly, the fastening element, in particular the thread, can be designed around a longitudinal axis of the sanitary outlet unit, i.e., in a circumferential direction of the sanitary outlet unit. The longitudinal axis of the sanitary outlet unit is parallel to the direction in which the sanitary outlet unit is intended to be inserted into the water outlet.

[0023] The mounting tool can be easily attached to the designated mounting geometry by the user. This attachment can preferably be made along the longitudinal axis of the sanitary outlet unit. Furthermore, the mounting tool can be operated very easily by the user, thus allowing the outlet unit to be easily screwed into or unscrewed from the water outlet of a sanitary fitting.

[0024] The sanitary outlet unit described here further improves the performance characteristics of sanitary outlet units. The mounting tool, located within the internal mounting geometry, allows for the simple application of torque to the sanitary outlet unit. In particular, the achievable torque can be higher than that typically applied by a user simply gripping the sanitary outlet unit by hand. Furthermore, it is possible to... PC 25 2279 C 5 / 63 14 January 2026

[0025] The water jet exiting the outlet unit is wider in diameter than that of an outlet unit with an external intake geometry. This is because, for example, an area occupied by the external intake geometry of the outlet unit with the internal intake geometry can be used as part of the flow cross-section for the fluid in the outlet unit described here.

[0026] In practice, the sanitary outlet unit may additionally or alternatively be designed as a mouthpiece. When designed as a mouthpiece, the gripping surface may protrude from the water outlet during normal installation. Therefore, the aesthetic requirements for this area are particularly high. These requirements can be met, in particular, by additionally or alternatively ensuring that the gripping surface is tactilely flat.

[0027] In practice, it may be additionally or alternatively provided that the sanitary outlet unit is annular. An annular outlet unit has a wall that surrounds an interior space. The interior space is open at least at two end faces of the annular shape, i.e., fluidically connected to the surrounding environment. In the circumferential direction, the annular outlet unit may be closed. However, it is possible that the annular shape has a slot such that the outlet unit is not completely closed in the circumferential direction. If the sanitary outlet unit is annular, it can fulfill the usual functions of a sanitary outlet device, particularly one designed as a mouthpiece, and be especially space-saving. PC 25 2279 C 6 / 63 14 January 2026

[0028] Additionally or alternatively, the sanitary outlet unit can be designed in a sleeve shape. The sleeve shape is similar to the ring shape described here and differs from the ring shape in that it is elongated around a longitudinal axis, in particular the longitudinal axis described here. This design allows the outlet unit to provide ample space for optional components, especially for influencing the water jet.

[0029] If the sanitary outlet unit is ring-shaped and / or sleeve-shaped, the internal receiving geometry can be formed, in particular, on an inner side of the ring-shaped and / or sleeve-shaped sanitary outlet unit.

[0030] The inside of the ring-shaped and / or sleeve-shaped sanitary outlet unit refers to the surface of the ring-shaped and / or sleeve-shaped sanitary outlet unit facing the center of the sanitary outlet unit.

[0031] For example, the sleeve-shaped sanitary outlet unit can be essentially hollow cylindrical. The inner surface is then formed by the lateral surface of the essentially hollow cylindrical sanitary outlet unit, which faces the axis of rotation.

[0032] With regard to the inner surface of the annular and / or sleeve-shaped sanitary outlet unit, it may additionally or alternatively be provided that the receiving geometry includes sections of the inner surface. In other words, the receiving geometry may be formed at least partially by at least one section of the inner surface or by several sections of the inner surface. Thus, it is possible that, in addition to the components already required for a sanitary outlet unit, only a few further components are needed. PC 25 2279 C 7 / 63 14 January 2026

[0033] Components, or even no additional components, are required to form the recording geometry.

[0034] In particular, the receiving geometry can be formed on an inner side of the section of the sanitary outlet unit facing away from the inflow side. This makes the receiving geometry particularly easy to access with the assembly tool.

[0035] Furthermore, or alternatively, it may be provided that an interior space of the sanitary outlet unit, in particular the interior space described here, surrounded by the wall of the ring-shaped and / or sleeve-shaped outlet unit, is designed as a free space. A free space is hollow.

[0036] Due to the available space, the sanitary outlet unit can be flexibly expanded with further optional components, especially for influencing a water jet.

[0037] In practice, it may be additionally or alternatively provided that a stop is formed between the fastening element, in particular the thread, and the gripping surface, acting at least partially in one insertion direction of the discharge unit. The stop may, for example, be external, i.e., radially external.

[0038] Additionally or alternatively, the stop can have a stop surface that extends transversely and, in particular, orthogonally to a longitudinal axis, especially to the longitudinal axis of the outlet unit described here. The stop can, for example, contact a counter-stop of a water outlet of a sanitary fitting. This allows the outlet unit to be easily installed with the installation tool until contact between the stop and the counter-stop exerts a counterforce opposing the installation. PC 25 2279 C 8 / 63 14 January 2026

[0039] In particular, the gripping surface of the sanitary outlet unit can be optimally positioned in or on the water outlet of a sanitary fitting when used as intended. This allows the sanitary outlet unit to function, for example, as a nozzle, which can accommodate other components that influence the water jet. The water jet emitted by the outlet unit can have a large diameter, and the outlet unit can be both easy to install and visually appealing to the user, as described.

[0040] In practice, it may be additionally or alternatively provided that the receiving geometry is designed to create a mechanical connection with a mating geometry of the assembly tool. The formation of a mechanical connection represents a particularly simple method of force transmission.

[0041] In particular, the mechanical connection can be a positive-locking connection. A positive-locking connection means that there is a connection effect in one direction. In practice, a positive-locking connection can allow the user to connect and disconnect the assembly tool from the sanitary outlet unit as needed.

[0042] In particular, the positive locking connection can act in at least one direction oriented transversely to a longitudinal axis, especially the longitudinal axis of the sanitary outlet unit described here. This can make assembly and / or disassembly of the sanitary outlet unit particularly easy, for example, if the fastening element is secured by turning, especially if the fastening element has a thread. PC 25 2279 C 9 / 63 14 . January 2026

[0043] This is because a torque can be transmitted from the assembly tool to the sanitary outlet unit essentially parallel to the rotated fastener, in particular parallel to a thread pitch or the thread pitches of the thread. Furthermore, it is possible for the sanitary outlet unit and the assembly tool to interact according to the lock-and-key principle.

[0044] The receiving geometry can be arranged, in particular, on a section of the sanitary outlet unit facing away from an inflow side, preferably on a section comprising an outflow side of the sanitary outlet unit. More preferably, the receiving geometry can be arranged and designed such that the assembly tool with the counter-geometry can be brought towards the receiving geometry along the longitudinal axis of the sanitary outlet unit and the counter-geometry can be positively connected to the receiving geometry. This makes attaching and detaching the assembly tool particularly easy.

[0045] It is explicitly pointed out that the described mechanical connection, and in particular the positive-locking connection, does not require an exact geometrically complementary design of the receiving geometry and the mating geometry. While the receiving geometry and the mating geometry can be geometrically complementary, it is also possible for the mating geometry to be designed in such a way that the assembly tool can move within the receiving geometry, so that the receiving geometry forms a rotational stop that allows for zero play when changing the direction of rotation of the assembly tool. PC 25 2279 C 10 / 63 14 January 2026

[0046] In practice, it may also be provided that the receiving geometry is accessible via an outlet opening, either additionally or alternatively. The outlet opening is the opening of the outlet unit and / or the sanitary fitting described here, through which a water jet can emerge during operation. Due to the accessibility via the outlet opening, the flow cross-section available for the water jet can be particularly large, as described. Furthermore, the receiving geometry is easily accessible and, at the same time, not visible to the user during normal use of the outlet unit, so that a sanitary fitting equipped with this outlet unit appears particularly high-quality.

[0047] In practice, a discharge structure may be formed or arranged at the discharge opening, particularly at the discharge opening of the sanitary discharge unit. The discharge structure may be formed or arranged, in particular, downstream of the receiving geometry at the discharge opening.

[0048] The outlet structure can, in particular, have a grid structure, wherein the grid structure has openings through which the assembly tool can be passed with at least one section, in particular with a section having the opposite geometry. The assembly tool, in particular the structure of the opposite geometry, is accordingly inversely, i.e. geometrically, adapted to these openings.

[0049] The outlet structure can, in particular, have at least two different types of openings. A first type of opening can be designed exclusively for the passage of a fluid. A second type of opening can be used for the passage of a fluid and for the PC 25 2279 C 11 / 63 14 January 2026

[0050] The openings of the second type of opening can be designed to allow the described section of the assembly tool to pass through, in particular the counter-geometry. The openings of the second type can be larger than the openings of the first type. In particular, the extent of the openings of the second type in the circumferential direction of the sanitary outlet unit can be greater than the extent of the openings of the first type in the circumferential direction. Additionally or alternatively, the second type of opening can be formed at a radially outer edge of the outlet structure, in particular such that the described section of the assembly tool, passed through the openings of the second type, can abut the inner receiving geometry.

[0051] In practice, it can also be provided, additionally or alternatively, that the fastening element, in particular the thread, and the gripping surface are each formed from a single metal component. If these components are made of metal, the sanitary outlet unit visually harmonizes with the typically metallic, shiny water outlet of a sanitary fitting. Furthermore, these metal components can be particularly durable.

[0052] Alternatively, in practice, the fastening element, in particular the thread, and the gripping surface may each be formed from a single component made of hard plastic. These components made of hard plastic can also be particularly durable.

[0053] Alternatively, in practice it may be intended that the fastening element, in particular the thread, is at least partially made of a hard component and the gripping surface PC 25 2279 C 12 / 63 14 . January 2026

[0054] is at least partially composed of a soft component.

[0055] The hard component can, in particular, possess a strength that gives the sanitary outlet unit a sufficiently high level of stability for its intended use.

[0056] The soft gripping surface allows the user to easily grasp the sanitary outlet unit when applying the assembly tool and / or operating the tool. The soft design of the gripping surface, particularly due to the tactile feedback provided by the soft component, facilitates the user's precise location of the gripping surface and the corresponding receiving geometry, positioned in a predetermined location, without visual inspection. This soft design thus enables intuitive and correct installation and / or removal of the outlet unit. Furthermore, the gripping surface can yield slightly, providing a more secure hold with the user's fingers when attaching the sanitary outlet unit to the water outlet.

[0057] Furthermore, a high coefficient of friction can be achieved using a soft material for the soft component. If the sanitary outlet unit is positioned in a water outlet in such a way that the soft component at least partially contacts a section of the water outlet, a particularly secure fit of the sanitary outlet unit can be achieved.

[0058] The hard component and / or the soft component may have ventilation slots extending through the casing surfaces to allow a water jet to vent. The ventilation slots may be located, in particular, on the downstream side of the fastening element, PC 25 2279 C 13 / 63 14 . January 2026

[0059] in particular the thread, be arranged, preferably directly adjacent to it.

[0060] In practice, it can also be provided that the receiving geometry, in a cross-section oriented orthogonal to a longitudinal axis, particularly to the longitudinal axis of the sanitary outlet unit described here, is at least partially non-circular. A non-circular geometry refers to a geometry that is not circular. With a non-circular geometry, the described positive-locking connection can be implemented particularly effectively and simply. This is because the non-circular receiving geometry allows forces acting in one direction of rotation to be transmitted, so that the transmitted torque described here can be particularly high. With a circular receiving geometry, on the other hand, primarily frictional forces can be transmitted from the counter-geometry to the receiving geometry, so that the transmitted torque is comparatively low.

[0061] The receiving geometry, which is at least partially non-circular in a cross-section oriented orthogonally to the longitudinal axis described here, can, for example, be partially or completely elliptical, polygonal, or a combination of different, composite geometries.

[0062] In practice, it may also be additionally or alternatively provided that the receiving geometry has at least two geometrically different sections arranged alternately in one circumferential direction of the sanitary outlet unit. This allows the receiving geometry to be manufactured easily while simultaneously ensuring a secure connection to the counter-geometry. PC 25 2279 C 14 / 63 14 January 2026

[0063] In particular, the receiving geometry, as described, can be formed at least partially from the inside of the sleeve-shaped sanitary outlet unit. In this case, for example, round sections of the inside can alternate with geometrically different sections in the circumferential direction of the sanitary outlet unit.

[0064] The two geometrically different sections, arranged alternately in the circumferential direction of the sanitary outlet unit, can in particular be arranged equidistantly. This allows a force transmitted from the assembly tool to the receiving geometry to be distributed particularly evenly.

[0065] In practice, it may be further or alternatively provided that the receiving geometry has round sections and sections projecting towards a center, particularly the center described here, of the sanitary outlet unit. In particular, the receiving geometry, as described, may be formed at least partially from the inside of the sleeve-shaped sanitary outlet unit. In this case, in addition to or as an alternative to the described configuration of the receiving geometry, geometrically deviating sections may project radially inwards from the inside towards the round sections of the inside.

[0066] Due to the sections projecting towards the center, the external geometry of the sanitary outlet unit, which is usually adapted to a standardized internal geometry of the water outlet of sanitary fittings, can remain unchanged compared to known sanitary outlet units and PC 25 2279 C 15 / 63 14 January 2026

[0067] at the same time the recording geometry can be manufactured particularly easily.

[0068] In practice, it may also be provided that the intake geometry has round sections and, in contrast to the round sections, protrudes outwards from a center, in particular the center described here, of the sanitary outlet unit.

[0069] The sections projecting outwards from the center refer, for example, to recesses formed in sections within the wall of the sanitary outlet unit. These recesses accommodate elements of the installation tool used in the sanitary outlet unit. These elements may, for instance, geometrically correspond to the recesses or at least be dimensioned to fit into them with ample clearance. For example, the recesses may be designed to allow elements of the installation tool, such as one or more pins and / or one or more balls, to engage. The recesses may project partially into the wall or penetrate it completely.If the recesses completely penetrate the wall and are adjacent to an outflow side of the sanitary outlet unit, the wall on the outflow side may be specifically serrated, for example, by having a sawtooth profile, a zigzag profile, and / or a crenellated profile. Alternatively or additionally, the wall on the outflow side may, for example, have a corrugated profile. As mentioned, the assembly tool may have elements that geometrically correspond to one or more of the described profiles. PC 25 2279 C 16 / 63 14 January 2026.

[0070] The design of the receiving geometry described here, with round sections and sections projecting outwards from the center relative to the round sections, can be particularly advantageous in conjunction with the sleeve-shaped sanitary outlet unit. In this case, the essentially sleeve-shaped wall can have recesses and / or openings for receiving the counter-geometry of the assembly tool.

[0071] In practice, it may also be provided, additionally or alternatively, that the receiving geometry has sections, each of which has at least one contact surface formed transversely to a circumferential direction, in particular to the circumferential direction described here, of the sanitary outlet unit. If the receiving geometry has sections with contact surfaces, and in particular if the counter-geometry of the mounting tool has counter-contact surfaces that can be applied to it, the mounting tool can be attached to the sanitary outlet unit particularly securely, and a rotation from the mounting tool can be transferred to the sanitary outlet unit particularly well.

[0072] The contact surfaces can be designed to be orthogonal to the circumferential direction of the sanitary outlet unit. Additionally or alternatively, the contact surfaces can be aligned parallel to the longitudinal axis of the sanitary outlet unit. Due to the orthogonally designed and / or parallel orientation of the contact surfaces, torque can be transferred particularly efficiently from the mounting tool to the receiving geometry.

[0073] For example, if the recording geometry has alternating, geometrically distinct sections, at least one of these sections can have contact surfaces. Additionally, or PC 25 2279 C 17 / 63 14 January 2026

[0074] Alternatively, if the recording geometry has round sections and sections that differ geometrically from the round sections, at least one of the sections that differ from the round sections can have contact surfaces.

[0075] In practice, it can also be provided that the mounting geometry has ribs, either additionally or as an alternative. The ribs allow for a particularly easy-to-manufacture mounting geometry and provide a secure hold for the assembly tool.

[0076] The ribs can be formed, in particular, on the inner side of the sanitary outlet unit. Furthermore, the ribs can be formed, in particular, on the inner side of the sleeve-shaped sanitary outlet unit. By forming the ribs on the inner side, the outer geometry of the sanitary outlet unit can remain unchanged compared to known sanitary outlet units, with the associated advantages described here.

[0077] Additionally or alternatively, the ribs can extend over only a portion of the length of the sanitary outlet unit along a longitudinal axis, in particular the longitudinal axis described herein. Specifically, the ribs can extend over 10% to 50%, preferably 20% to 30%, of the length of the sanitary outlet unit along the longitudinal axis L.

[0078] In practice, it may also be provided that the receiving geometry is formed by the hard component, either additionally or alternatively.

[0079] Additionally or alternatively, the mounting geometry can be formed integrally with the fastening element, in particular the thread. PC 25 2279 C 18 / 63 14 January 2026

[0080] If the receiving geometry is formed by the hard component and / or is integral with the fastening element, in particular the thread, a rotation from the assembly tool can be transferred directly to the sanitary outlet unit and in particular to the fastening element, in particular the thread.

[0081] In practice, it may also be provided, additionally or alternatively, that a section of one component penetrates the other component. In particular, a section of the hard component may penetrate a section of the soft component. Additionally or alternatively, a section of the soft component may penetrate a section of the hard component.

[0082] This ensures a particularly strong connection between the hard and soft components. Furthermore, other shapes of hard and / or soft components can be created without compromising the stability of the connection.

[0083] In practice, it may also be provided, additionally or alternatively, that the gripping surface is firmly connected to the fastening element, in particular the thread. This allows a force to be transmitted particularly securely and / or directly from the gripping surface to the fastening element, in particular the thread, and vice versa. For example, the fastening element, in particular the thread, can be pressed against the water outlet by moving the gripping surface in the direction of the water outlet. Likewise, a force can be transmitted from the hard component formed by the fastening element, in particular the thread, to the gripping surface. PC 25 2279 C 19 / 63 14 January 2026

[0084] In practice, it can also be provided that the soft component forms a sealing element, either additionally or alternatively. This eliminates the need for a separate sealing element. The outlet unit can then consist of fewer individual parts, simplifying manufacturing and / or assembly.

[0085] In practice, it may also be provided that the sealing element preferably extends beyond the hard component in a radial direction.

[0086] This allows the hard component to be sealed externally. When the outlet unit is screwed in, the soft component is then compressed between the hard component and the water outlet, resulting in a particularly strong seal. This seal can be designed, for example, so that the fastening element, especially the thread, is sealed from both sides along its longitudinal axis. This protects the fastening element, particularly the thread, from deposits such as limescale. Therefore, the outlet unit remains easily disassembled even after prolonged use under harsh conditions.

[0087] In practice, it may also be provided that the soft component forms at least two sealing elements, either additionally or alternatively.

[0088] This allows the sealing effect to be increased. The sealing elements can, for example, be arranged in the threaded fastening element in such a way that each thread is optimally sealed. For instance, the thread can be designed as a multi-start thread, with one sealing element per thread. PC 25 2279 C 20 / 63 14 . January 2026

[0089] In practice, it may also be provided, additionally or alternatively, that two sealing elements are positioned opposite each other. Alternatively or additionally, it may be provided that the sealing elements are evenly distributed in the circumferential direction.

[0090] Thus, when the outlet unit is screwed in, the resulting clamping forces balance each other out. This minimizes or prevents the outlet unit from tilting during installation. The risk of water penetrating the fastening element, especially the threads, and subsequently depositing inorganic salts such as limescale, is reduced or eliminated. This, in turn, reduces or eliminates the risk of the outlet unit becoming stuck due to these deposits.

[0091] In practice, it may also be provided that the sealing element is designed to run all the way around, either additionally or alternatively. Alternatively or additionally, it may be provided that the sealing element is designed to at least partially cover the fastening element, in particular the thread.

[0092] Thus, a sealing effect can be achieved across the entire circumference of the outlet unit. The sealing effect can extend to parts of the fastening element, particularly the thread. The sealing effect can also be achieved at a distance from the fastening element, particularly the thread. The overlap of the fastening element, particularly the thread, with the sealing element can be used for a force-fit and / or form-fit connection between the hard and soft components. The sealing element can extend, for example, in the axial direction, i.e., along the longitudinal axis, and / or in the radial direction. The sealing element can also be positioned at a distance from the fastening element. PC 25 2279 C 21 / 63 14 January 2026

[0093] The sealing element may be located, in particular, below or above the thread, along the longitudinal axis of the fastening element, especially the thread. The sealing element may also be located on the fastening element, especially the thread.

[0094] In practice, it may also be provided that the sealing element is limited to a circumferential section, either additionally or alternatively.

[0095] Thus, the sealing effect can be utilized at various points depending on the design of the outlet unit. If the sealing element is integrated into a single thread, limiting the size of the sealing element can achieve sufficient sealing. This allows for material savings.

[0096] In practice, it can also be additionally or alternatively provided that a surface area of ​​the outlet unit, where water droplets or water deposits can collect, is coated with a water-repellent component, particularly a soft and / or hard one. This helps to prevent or reduce limescale deposits.

[0097] In practice, it may also be provided that the soft component includes a run-out structure, either additionally or alternatively.

[0098] The outlet structure can be designed such that a water jet exiting the outlet unit as intended is advantageously malleable. A separate component with an outlet structure can therefore be dispensed with. The sealing element and the outlet structure can, in particular, be formed in one piece. The outlet structure can thus be made from a PC 25 2279 C 22 / 63 14 . January 2026

[0099] It should be shaped from a soft material. This allows for the removal of any limescale residue on the outlet structure by deforming the outlet structure, for example with the user's fingers.

[0100] In practice, it may also be provided that the hard component has at least one recess containing a section of the soft component, either additionally or alternatively.

[0101] This allows for increased strength of the bond between the hard and soft components. Furthermore, a discharge unit with this feature can be easily manufactured by first producing the hard component in a mold and then adding the soft component in the same mold. For example, this makes it possible to connect several sections of the soft component, presented on the outside of the hard component, to each other internally. This allows for an advantageous visual design. Moreover, the stability of the bond between the externally presented sections of the soft component and the hard component, which may, for example, be located behind the soft component, can be particularly high.

[0102] In practice, it may also be provided, additionally or alternatively, that the hard component reinforces at least one area of ​​the soft component.

[0103] Thus, the strength of sections of the soft component can be adjusted depending on the design of the hard and soft components. For example, the gripping surface can be reinforced relative to the sealing element(s). This reinforcement can be achieved, in particular, by backing or filling an area of ​​the soft component with the hard component. PC 25 2279 C 23 / 63 14 January 2026

[0104] This results in an advantageous haptic feel of the gripping surface and / or an advantageous force transmission from the receiving geometry to the soft component during screwing in.

[0105] In practice, it can also be additionally or alternatively provided that the soft component is arranged in a surface area on the hard component, whereby height differences of a profile of the hard component are modified by the soft component, in particular increased or decreased. This allows, for example, smooth surfaces to be combined with easily perceptible profiles. In this way, hard and / or soft zones can be formed at various locations, which can be visible and / or palpable on the component surface.

[0106] In practice, it may additionally or alternatively be provided that the sanitary outlet unit has a mounting sleeve that supports the fastening element, in particular the thread, and / or the gripping surface. Additionally or alternatively, the sanitary outlet unit may have an aerator cartridge, in particular wherein the aerator cartridge is inserted into the mounting sleeve. The sanitary outlet unit may then be designed as an aerator in which a nozzle is formed with a hard and a soft component.

[0107] In practice, it may additionally or alternatively be provided that the fastening element, in particular the thread, is arranged axially, i.e., along the longitudinal axis of the sanitary outlet unit, between the gripping surface and a sealing element, in particular the at least one sealing element described here. The soft component can be the sealing element and the gripping surface. (PC 25 2279 C 24 / 63 14 January 2026)

[0108] partially formed. Thus, a mouthpiece with a seal can be formed in one piece.

[0109] To solve the aforementioned problem, the invention also provides the features of the dependent claim, which likewise relates to a sanitary outlet unit. In particular, to solve the aforementioned problem, a sanitary outlet unit of the type described at the outset or of the type described here is proposed, which has a contact surface for an aerator cartridge and / or for an aerator. The outlet unit can then serve as a support for the aerator cartridge and / or for the aerator. Additionally or alternatively, the outlet unit can serve as a retaining ring for the aerator cartridge and / or for the aerator. The aerator cartridge and / or the aerator can, in particular, be arranged or be arranged in the outlet unit, preferably in the free space of the outlet unit.

[0110] In particular, the outlet unit can have two contact surfaces spaced apart from each other in a longitudinal direction, especially in the direction described here, wherein at least one of these two contact surfaces is designed according to the description given here.

[0111] When the outlet unit is attached to a sanitary fitting with the mounting element, in particular the thread, and the aerator cartridge and / or aerator is properly seated against the contact surface, the support or retaining ring can be used to securely fix the aerator cartridge and / or aerator to the sanitary fitting, especially to a water outlet of the sanitary fitting. The aerator cartridge and / or aerator can then press against the contact surface.

[0112] At the same time, the installation area can be protected against PC 25 2279 C 25 / 63 14 . January 2026

[0113] Press the aerator cartridge and / or the aerator itself against a seal and / or a fluid-carrying system within the sanitary fitting. This will, for example, press the aerator cartridge or aerator, the seal, and / or the fluid-carrying system against the sanitary fitting and thus securely fasten it in place via the spout assembly.

[0114] In particular, the contact surface can be ring-shaped or ring-segment-shaped. This allows the mechanical pressure exerted by the aerator cartridge and / or the aerator to be distributed particularly homogeneously.

[0115] Additionally or alternatively, the mounting surface can be designed to form a sealing surface. This sealing surface can be designed, in particular, in conjunction with the aerator cartridge and / or the aerator itself. If the mounting surface serves as a sealing surface, it is possible to prevent or at least reduce unwanted water leakage between the aerator cartridge and the outlet unit and / or between the aerator and the outlet unit. The water can then be directed along a sharp edge of one of the outlet openings of the outlet unit, particularly the one described here.

[0116] In practice, it may further be provided that the mounting surface is formed on a section of the sanitary outlet unit that has a downflow side, particularly the section described above. Specifically, the mounting surface may be formed at the downflow end of the outlet unit. This allows the aerator cartridge and / or the aerator to be positioned particularly close to the outlet opening. In other words, the aerator cartridge and / or the aerator can be positioned via the PC 25 2279 C 26 / 63 14 January 2026

[0117] Its entire length must be supported. This allows its seat to be particularly secure.

[0118] Additionally or alternatively, the contact surface can be inclined with respect to a longitudinal axis of the sanitary outlet unit, particularly the one described here. Preferably, the contact surface can be conically tapered along the intended outflow direction from the outlet unit, particularly such that the flow cross-section in the outlet unit decreases in this direction. The angle between the inclined contact surface and the longitudinal axis can be less than 90°, preferably less than 45°. Additionally or alternatively, the angle between the inclined contact surface and the longitudinal axis can be more than 5°, preferably more than 15°. The inclined contact surface prevents static overdetermination of the bearing of the aerator cartridge and / or the aerator itself when more than one contact surface, for example, the two spaced-apart contact surfaces, are present.In other words, the aerator cartridge and / or aerator may move slightly along the mounting surface before it has become firmly seated.

[0119] Additionally or alternatively, the installation surface can form an undercut opposite an outlet opening of the sanitary outlet unit, particularly the one described here. The wall of the sanitary outlet unit can be thinner than in known outlet units. This allows for material savings during the manufacturing of the outlet unit and an increase in the flow cross-section within the outlet unit above the outlet opening. PC 25 2279 C 27 / 63 14 January 2026

[0120] In practice, it may further be provided that the hard component and / or the soft component have ventilation slots extending through the outer surfaces to allow a water jet to vent. The ventilation slots may be arranged, in particular, on the downstream side of the fastening element, especially the thread. Preferably, they are formed directly adjacent to the fastening element.

[0121] This makes it possible for the ventilation slots to be positioned particularly close to the inflow-side end of the outlet unit and / or at the level of a disassembly stage arranged in the outlet unit.

[0122] To solve the aforementioned problem, the invention also provides the features of the dependent claim, which relates to a sanitary fitting. In particular, a sanitary fitting with a sanitary outlet unit described herein is proposed to solve the aforementioned problem.

[0123] Thus, the described advantages of the described sanitary outlet unit can be used with the sanitary fitting.

[0124] For example, the sanitary fitting may have a water outlet. In particular, if the sanitary outlet unit is a spout, it may interact with a counter-stop of the water outlet, especially one formed on its end face. Additionally or alternatively, if the sanitary outlet unit has a stop located between the fastening element, especially the thread, and the gripping surface, especially on the outside, and acting at least partially in the insertion direction of the outlet unit, the stop may interact with a counter-stop of the water outlet, especially the counter-stop described above. Interaction means that a force is generated that opposes further insertion, especially through physical contact. PC 25 2279 C 28 / 63 14 January 2026

[0125] To solve the aforementioned problem, the invention also provides the features of the dependent claim, which relates to an assembly tool. In particular, to solve the aforementioned problem, an assembly tool for the sanitary outlet unit described herein is proposed, in which a counter geometry is geometrically compatible with the receiving geometry of the sanitary outlet unit.

[0126] The characteristic of geometrically matching receiving geometry and counter-geometry means, in particular, that these two geometries are designed in such a way that they can be arranged inside each other. Thus, a movement, especially a rotational movement, can be transferred from the counter-geometry to the receiving geometry.

[0127] The counter-geometry can be designed to be positively interlocked with the receiving geometry.

[0128] The features of the assembly tool described in connection with the other inventions are transferable to the assembly tool described here. Likewise, the features of the sanitary outlet unit, which are adapted to the assembly tool, are transferable to the assembly tool in a reverse configuration.

[0129] The assembly tool thus designed offers the advantages described in connection with the sanitary outlet unit. Furthermore, the assembly tool can be used for the assembly and / or disassembly of several different sanitary outlet units.

[0130] The assembly tool can, for example, also be sleeve-shaped. Additionally or alternatively, the PC 25 2279 C 29 / 63 14 . January 2026

[0131] The assembly tool has one or more handle elements, particularly wing-shaped, at one end opposite the opposing geometry. These handle elements allow a user to manually apply a high torque.

[0132] To solve the aforementioned problem, the invention also provides the features of the dependent claim directed to a system. In particular, a system is proposed to solve the aforementioned problem, comprising a sanitary outlet unit or sanitary fitting described herein and an assembly tool with a counter geometry, wherein the receiving geometry of the sanitary outlet unit and the counter geometry of the assembly tool are geometrically compatible with each other. The assembly tool can, in particular, be the assembly tool described herein. The feature of geometrically compatible receiving geometry and counter geometry means, in particular, that these two geometries are designed such that a movement, especially a rotational movement, can be transferred from the counter geometry to the receiving geometry.

[0133] The receiving geometry and the counter-geometry can in particular be designed such that a mechanical and preferably a positive-locking connection between the receiving geometry and the counter-geometry can be established.

[0134] Additionally or alternatively, the receiving geometry and the counter-geometry can be geometrically complementary to each other.

[0135] Preferably, the receiving geometry and the counter-geometry can be designed such that the sanitary outlet unit and PC 25 2279 C 30 / 63 14 . January 2026

[0136] The assembly tool can interact according to the key-lock principle.

[0137] Furthermore, additionally or alternatively, the receiving geometry and the counter-geometry can be formed from the same material, in particular from the material from which the hard component is formed.

[0138] With regard to the advantages achieved with the system, explicit reference is also made to the description of the features of the other inventions and the described advantages associated therewith.

[0139] To solve the aforementioned problem, the features of the subsidiary claim, which relates to a series of sanitary outlet units, are also provided according to the invention.

[0140] In particular, to solve the aforementioned problem, a series of sanitary outlet units is proposed which comprises at least two variants of sanitary outlet units, wherein a first variant is a sanitary outlet unit described here, wherein a second variant has a receiving geometry formed on the front and / or outside, and wherein the receiving geometry of the first variant and the receiving geometry of the second variant are geometrically compatible with a counter geometry of a common assembly tool.

[0141] The receiving geometry of the first variant and the receiving geometry of the second variant can, in particular, be geometrically compatible with a counter-geometry of a common assembly tool described here.

[0142] In particular, the receiving geometry of the two variants can be geometrically complementary to the opposite geometry. PC 25 2279 C 31 / 63 14 January 2026

[0143] The features of the sanitary outlet unit described in connection with the other aspects of the invention are transferable to the first variant. Additionally or alternatively, the features of the assembly tool described in connection with the other aspects of the invention are transferable to the assembly tool described here. The features of the sanitary outlet unit adapted to the assembly tool are also transferable to the assembly tool in a reverse configuration.

[0144] This design of the product line offers the advantages described in connection with the sanitary outlet unit, at least for the first variant of sanitary outlet units. Furthermore, it allows for the assembly and disassembly of multiple variants of the sanitary outlet units in this series using a single assembly tool. The reusability of this tool reduces material consumption, costs, and potential waste.

[0145] The second variant of the sanitary outlet unit can, for example, be designed as an aerator.

[0146] Additionally or alternatively, the intake geometry of the second variant can be at least partially formed by ventilation slots for aerating a water jet flowing through the second variant.

[0147] To solve the aforementioned problem, the invention also provides the features of the dependent claim, which relates to a method. In particular, to solve the aforementioned problem, a method for forming or disassembling a sanitary fitting with a sanitary outlet unit described herein is provided using an assembly tool with a counter geometry, in particular that described herein PC 25 2279 C 32 / 63 14 . January 2026

[0148] Assembly tool proposed. The procedure includes the following steps:

[0149] - Positioning the counter-geometry of the assembly tool against the receiving geometry of the sanitary outlet unit,

[0150] - Rotating the assembly tool around one or the longitudinal axis of the sanitary outlet unit.

[0151] In particular, the receiving geometry of the sanitary outlet unit and the counter-geometry of the assembly tool can be geometrically compatible with each other.

[0152] When the method is used to form a sanitary fitting, it may additionally be provided that the sanitary outlet unit is positioned on a water outlet of the sanitary fitting. In particular, the sanitary outlet unit can first be positioned on the water outlet, and then the counter-geometry of the assembly tool can be attached to the receiving geometry, and the assembly tool can be rotated in a screwing direction.

[0153] The described method makes it particularly easy to insert the sanitary outlet unit into a water outlet and thus create the sanitary fitting. Disassembly of the sanitary fitting is equally easy.

[0154] The invention is described in more detail below with reference to exemplary embodiments, but is not limited to these embodiments. Further exemplary embodiments result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiment. PC 25 2279 C 33 / 63 14 January 2026

[0155] It shows:

[0156] Figure 1 shows the sanitary outlet unit described here and a spaced-apart assembly tool, in a view from a low angle.

[0157] Figure 2 shows the sanitary outlet unit from Figure 1 with the attached assembly tool from Figure 1, in a longitudinal section view.

[0158] Figure 3 shows the sanitary outlet unit from Figure 1 with the attached assembly tool from Figure 1, in a side view.

[0159] Figure 4 shows an alternative embodiment of the sanitary outlet unit described here, with a pre-filter screen in a perspective view, with an enlarged view of a sealing element.

[0160] Figure 5 shows an alternative embodiment of the sanitary outlet unit described here in a side view with an enlarged representation of a sealing element.

[0161] Figure 6 shows an alternative embodiment of the sanitary outlet unit described here in its operating state with a pre-filter screen and an aerator cartridge, in a partial sectional view, with an enlarged representation of a sealing element.

[0162] Figure 7 shows an alternative embodiment of the sanitary outlet unit described here in a PC 25 2279 C 34 / 63 14 January 2026

[0163] side view with an enlarged representation of a sealing element,

[0164] Figure 8 shows an alternative embodiment of the sanitary outlet unit described here in its operating state with a pre-filter screen and an aerator cartridge, in a partial sectional view, with an enlarged representation of a sealing element.

[0165] Figure 9 shows an alternative embodiment of the sanitary outlet unit described here in a side view with an enlarged representation of a sealing element.

[0166] Figure 10 shows an alternative embodiment of the sanitary outlet unit described here in its operating state with a pre-filter screen and an aerator cartridge, in a partial sectional view, with an enlarged representation of a sealing element.

[0167] Figure 11 shows an alternative embodiment of the sanitary outlet unit described here in a perspective view from a slanted top view.

[0168] Figure 12 shows the sanitary outlet unit from Fig. 11 in a perspective sectional view from above.

[0169] Figure 13 shows the sanitary outlet unit from Fig. 11 in a perspective view from below.

[0170] Figure 14 shows the sanitary outlet unit from Fig. 11 with the mounting tool 31 inserted, in a sectional view from an oblique angle above, PC 25 2279 C 35 / 63 14 . January 2026

[0171] Figure 15 shows an alternative embodiment of the sanitary outlet unit described here in a perspective, partial sectional view.

[0172] Figure 16 shows the sanitary outlet unit from Fig. 15 in a perspective, partial sectional view from below.

[0173] Figure 17 shows an alternative embodiment of the sanitary outlet unit described here in its operating state with a pre-filter and an aerator cartridge, in a partial sectional view from the side.

[0174] Figure 18 shows the sanitary outlet unit from Fig. 17 in its state of use in a perspective, partial sectional view.

[0175] Figures 19 to 24 show alternative versions of the sanitary outlet unit described here in a bottom view, with geometrically different intake geometries.

[0176] Figure 25 shows an alternative embodiment of the sanitary outlet unit described here in its intended arrangement in a sectional view from the side.

[0177] In the following description of various objects and embodiments of the invention, elements that are functionally identical are given the same reference numerals even if they differ in design or shape. For clarity, not all reference numerals are shown in the figures, although the elements are indeed included in PC 25 2279 C 36 / 63 14 January 2026

[0178] Figures may be present.

[0179] Figure 1, Figure 2 and Figure 3 show the same embodiment of the sanitary outlet unit described here.

[0180] The sanitary outlet unit 1 has a fastening element 2 in the form of a thread 2 and a gripping surface 3. Besides the thread 2, other fastening elements are also conceivable, for example a bayonet fitting. The thread 2 is at least partially formed from a hard component 4, and the gripping surface 3 is at least partially formed from a soft component 5. It is available in an alternative form.

[0181] In an embodiment of the invention, it is also possible for the thread 2 and the gripping surface 3 to be made of metal. Likewise, in an alternative embodiment of the invention, it is possible for the thread 2 and the gripping surface 3 to be made of hard plastic. The hard component 4 is materially and form-fittingly connected to the soft component 5. The sanitary outlet unit 1 also has a receiving geometry 30 for an assembly tool 31, which is also shown in Figures 1 to 3.

[0182] The system described here is formed by the combination of the sanitary outlet unit 1 and the assembly tool 31. The sanitary fitting according to the invention can be formed by inserting the sanitary outlet unit 1 into a water outlet of a sanitary fitting (not shown).

[0183] The sanitary outlet unit 1 is designed in a sleeve shape. The sleeve-shaped sanitary outlet unit 1 shown has an overall essentially hollow cylindrical shape with a round base. However, it is also conceivable that the base of the sleeve-shaped sanitary outlet unit is not round, but angular (not shown). In PC 25 2279 C 37 / 63 14 January 2026

[0184] The sleeve-shaped outlet unit has an interior space 40 designed as a free space in which components for influencing a water jet can be arranged, e.g. a jet regulator.

[0185] The sleeve-shaped sanitary outlet unit 1 has an inlet side A and an outlet side B. Viewed along a longitudinal axis L, along which the sanitary outlet unit 1 is formed, the inlet side A and the outlet side B form opposite ends of the sanitary outlet unit 1. The longitudinal axis L shown in the figures also forms an axis of rotation around which the essentially hollow cylindrical outlet unit 1 is formed. Simultaneously, the outlet unit 1 can be inserted into a water outlet of a sanitary fitting along the longitudinal axis L.

[0186] The sanitary outlet unit 1 can be inserted into a water outlet with the inlet side A facing forward, so that the sanitary fitting described here can be configured. When the sanitary outlet unit 1 is inserted into a water outlet and the water outlet is activated, water can flow into the sanitary outlet unit 1 from the inlet side A and flow out of the sanitary outlet unit 1 from the outlet side B.

[0187] The thread 2 is formed on the outside of the hard component 4 of a section of the sanitary outlet unit 1 having the inflow side A. It has a plurality of thread turns 16 formed in the circumferential direction of the sanitary outlet unit 1. The circumferential direction is the direction about the longitudinal and rotational axis L shown in Figures 1 to 3. PC 25 2279 C 38 / 63 14 January 2026

[0188] The gripping surface 3 and the receiving geometry 30 are formed on a section of the sanitary outlet unit 1 that has the outflow side B. The gripping surface 3 and the receiving geometry 30 are thus located on a side of the sanitary outlet unit 1 that is engaged by the thread 2. When the sanitary outlet unit 1 is inserted into a water outlet, a user of the sanitary outlet unit 1 can easily access the receiving geometry 30 with the assembly tool 31 due to the design described here.

[0189] In the embodiment described here, the receiving geometry 30 is formed by the hard component 4, from which the thread 2 is also formed. The receiving geometry 30 and the thread 2 are thus formed in one piece. This allows a rotation applied by the assembly tool 31 to be effectively transferred from the assembly tool 31 to the thread 2. In the embodiment described here, the gripping surface 3 is formed by the soft component 5.

[0190] A stop 41 with a stop surface extending orthogonally to the longitudinal axis L is formed radially external between the thread 2 and the gripping surface 3. The stop 41 serves to contact a counter stop of a water outlet of a sanitary fitting and, in particular, to limit the screwing of the outlet unit 1 into a sanitary fitting so that the gripping surface 3 protrudes from the water outlet.

[0191] The intake geometry 30 consists of a plurality of first sections 32 and a plurality of second sections 33. The first sections 32 and second sections 33 are geometrically different and are arranged alternately in the circumferential direction of the sanitary outlet unit 1. The first sections 32 of PC 25 2279 C 39 / 63 14 January 2026

[0192] The recording geometry 30 has equal distances to each other in the circumferential direction, i.e., it is equidistant. The second sections 33 of the recording geometry 30 also have equal distances to each other in the circumferential direction, i.e., it is equidistant.

[0193] The first sections 32 of the receiving geometry 30 are formed by a part of the inner surface 34 of the sleeve-shaped sanitary outlet unit 1, i.e., the surface of the sleeve-shaped sanitary outlet unit 1 facing towards the center of the sleeve-shaped sanitary outlet unit 1, and in particular by a component of the hard component 4. The first sections 32 are thus round in cross-section oriented orthogonally to the longitudinal axis L, and in particular, are circular in shape.

[0194] The second sections 33 of the receiving geometry 30 are formed as ribs 35 on the inner side 34 of the sleeve-shaped sanitary outlet unit 1. The ribs 35 project radially inward from the inner side 34 of the sleeve-shaped sanitary outlet unit 1 toward the center of the sleeve-shaped sanitary outlet unit 1, i.e., in the direction of the longitudinal axis L shown in Figures 1 to 3 (see also Fig. 19). In a cross-section oriented orthogonally to the longitudinal axis L, each rib 35 is quadrilateral. In particular, each rib 35 is essentially rectangular in said cross-section. Due to the combination of the first sections 32, which are round in the cross-section orthogonal to the longitudinal axis L, and the second sections 33, which are quadrilateral in the cross-section orthogonal to the longitudinal axis L, the receiving geometry is overall non-circular in the cross-section orthogonal to the longitudinal axis L.In an alternative design form, the profile of the intake geometry 30 can be modified, particularly due to prominent ribs and / or recesses in the wall PC 25 2279 C 40 / 63 14 . January 2026.

[0195] The wall may be jagged, for example, by having a sawtooth or zigzag profile. In another alternative design, the wall on the downstream side may, for example, have a wave-shaped profile (see also Figures 19 to 24). The assembly tool 31 may have elements that geometrically correspond to the respective profile.

[0196] In an alternative design not shown in the figures, the ribs of the outlet unit 1 described here can be trapezoidal in the mentioned cross-section, in particular with legs of equal length, especially wherein the short side of the trapezoid is formed away from the inside 34 and the long side of the trapezoid borders the inside 34.

[0197] The ribs 35 extend along the longitudinal axis L over a length of approximately 2 mm or over a length of approximately 10% of the length of the sanitary outlet unit 1 along the longitudinal axis L. One end of the ribs 35 facing the inflow side A is angled obliquely to the inflow side A so that the flow can pass over the ribs 35 with only slight turbulence.

[0198] Due to the rectangular cross-sectional shape of the ribs 35 described here, the ribs 35 have elongated contact surfaces 36a, 36b which are essentially orthogonal to the circumferential direction of the sanitary outlet unit 1. If the ribs have a trapezoidal cross-section, the contact surfaces can be completely orthogonal to the circumferential direction of the sanitary outlet unit 1.

[0199] The elongated contact surfaces 36a, 36b are aligned parallel to the longitudinal axis L. The contact surfaces 36a, 36b serve PC 25 2279 C 41 / 63 14 January 2026

[0200] This ensures that the mounting tool 31 can rest against the receiving geometry 30 essentially orthogonally to the circumferential direction of the sanitary outlet unit 1, so that a force in the circumferential direction, i.e., essentially parallel to the course of the threads 16 of the thread 2, can be transmitted to the receiving geometry 30. This allows the mounting tool 31 to be attached to the receiving geometry particularly securely and a force to be transmitted particularly effectively.

[0201] Furthermore, the design of the receiving geometry 30 as a combination of parts of the inside 34 of the sleeve-shaped sanitary outlet unit 1 and of ribs 35 ensures that the assembly tool 31 can be easily brought parallel to the longitudinal axis L of the sanitary outlet unit 1 to the outflow side B and attached to the receiving geometry 30 in a rotationally secure manner.

[0202] When the mounting tool 31 is attached to the receiving geometry 30, the receiving geometry 30 and the mounting tool 31 can form a positive-locking connection. This connection can, in particular, be based on the key-lock principle, i.e., the sanitary outlet device 1 can only be screwed into or out of a water outlet using a mounting tool 31 that has a mating geometry matching the receiving geometry 30.

[0203] For the purpose of a positive locking connection, in particular according to the key-lock principle, the assembly tool 31 shown in Figures 1 to 3 has a counter-geometry 37 that is geometrically compatible with the receiving geometry 30.

[0204] The counter-geometry 37 is also sleeve-shaped and, in particular, hollow-cylindrical. The outer diameter of the counter-geometry 37 is smaller than that of PC 25 2279 C 42 / 63 14. January 2026

[0205] Diameter of the inner side 34 of the sanitary outlet unit 1. In particular, the outer diameter of the counter geometry 37 is selected such that the counter geometry 37 can slide along the inner side 34 of the sanitary outlet unit 1 when the assembly tool 31 is applied to the receiving geometry 30.

[0206] A stepped profile is formed on the end face of the counter geometry 37, which has crenellated structures 38. The crenellated structures 38 are each quadrangular and, in particular, rectangular in cross-section. When the assembly tool 31 is attached to the receiving geometry 30, the crenellated structures 38 project along the longitudinal axis L of the sanitary outlet unit 1 into the first sections 32 of the receiving geometry 30, so that they are each surrounded in the circumferential direction by two ribs 35.

[0207] When the mounting tool 31 is rotated, a contact surface 39a, 39b of each of the crenellated structures 38 of the counter geometry 37 comes into contact with one of the contact surfaces 36a, 36b of the ribs 35 of the receiving geometry 30 as a result of movement in the circumferential direction. Thus, regardless of the direction of rotation, it is possible to easily transmit a force from the mounting tool 31 in the circumferential direction to the sanitary outlet unit 1 in order to screw the sanitary outlet unit 1 into or out of a water outlet.

[0208] In the embodiment shown in Figures 1 to 3, the receiving geometry 30 and the counter-geometry 37 are not complementary, although a complementary configuration is also possible. In the embodiment shown in Figures 1 to 3, the receiving geometry 30 and the counter-geometry 37 are spaced apart in the circumferential direction when the assembly tool 31 is attached to the receiving geometry 30, so that the PC 25 2279 C 43 / 63 14 January 2026

[0209] The opposite geometry 37 has no play in the circumferential direction. This makes it particularly easy for a user to attach the assembly tool 31 to the sanitary outlet unit 1.

[0210] Figures 4 to 20 illustrate further features of the sanitary outlet unit 1 described herein, based on alternative embodiments that may be implemented in addition to or as an alternative to the features described above. Components and functional units that are functionally and / or structurally similar or identical to the embodiment described above are designated with the same reference symbols and are not described separately again. The descriptions of Figures 1 to 3 therefore apply accordingly. In particular, all the described alternative embodiments have a receiving geometry of the type described above, even if this is not always visible in the figures.

[0211] Figure 4 shows a sanitary outlet unit 1 described herein, with a thread 2 and a gripping surface 3, wherein the thread 2 is formed from a hard component 4 and the gripping surface 3 from a soft component 5. The hard component 4 is materially and form-fit connected to the soft component 5. A section 6 of the soft component 5 penetrates the hard component 4. Furthermore, the soft component 5 forms a sealing element 7, which projects beyond the hard component 4 in a direction 8 away from the center of the sanitary outlet unit 1, in particular radially, and is shown enlarged. The sealing element 7 is also limited to a circumferential section 9 in the circumferential direction. A pre-filter 10, which is inserted into the sanitary outlet unit 1, is also visible. PC 25 2279 C 44 / 63 14 January 2026

[0212] Figure 5 shows a side view of a sanitary outlet unit 1 described herein. It is particularly evident that a further sealing element 11 is formed. Both sealing elements 7 and 11 are opposite each other. The enlarged view shows that the sealing element 7, as well as the sealing element 11, projects radially 8 beyond the hard component 4.

[0213] Figure 6 shows a sanitary outlet unit 1, as described herein, in its operating state in a partial sectional view. The sanitary outlet unit 1 is screwed into the water outlet 12 of a sanitary fitting 13. In the sectional view, a pre-filter 10 and external ribs 14 of an aerator cartridge 24 are visible. The aerator cartridge 24 is inserted into a mounting sleeve 25. Thus, the interior space 40 described in connection with Figures 1 to 3 is filled with an additional component for influencing a water jet that can be directed from the outlet unit 1. Furthermore, a sealing element 7 is formed, which is shown in an enlarged view. The sealing element 7 projects radially 8 beyond the hard component 4, and the thread 2 interacts with the fitting thread 15 in such a way that the sealing element 7 seals the thread 16.It can be seen that a section 6 of the soft component 5 penetrates the hard component 4 to form the sealing element 7. The hard component 4 also has an internal channel 17 (see also Fig. 14) which contains a section 18 of the soft component 5. The hard component 4 also reinforces the soft component 5 in an area 19 in the region of the gripping surface 3. This reinforcement or support makes the gripping surface 3 particularly stable and easy to grip. A separate sealing ring 20 is also visible. PC 25 2279 C 45 / 63 14 . January 2026.

[0214] Figure 7 shows another embodiment of the sanitary outlet unit 1 described here in a side view. Here, the sealing element 7 is designed to be circumferential and partially covers the thread 2. The sealing element 7 is shown enlarged in a detail.

[0215] Figure 8 shows the sanitary outlet unit 1 from Figure 7 in its operating state in a partial sectional view. This embodiment differs from the embodiment shown in Figure 6 in that the sealing element 7 is circumferential and partially covers the thread 2. This is shown in an enlarged view. The figure shows how the fitting thread 15 engages in the circumferential sealing element 7 and thus seals it.

[0216] Figure 9 shows another embodiment of the sanitary outlet unit 1 described here in a side view. This embodiment differs from the embodiment shown in Figure 7 by a narrower sealing element 7, which is shown enlarged.

[0217] Figure 10 shows the sanitary outlet unit 1 from Figure 9 in its used state in a partial sectional view. In the magnified view, it can be seen that the sealing element 7 is spaced apart from the thread 2 and does not cover it.

[0218] Figure 11 shows another embodiment of the sanitary outlet unit 1 described here in a perspective view from an oblique angle above. In this embodiment, the soft component 5 is spaced apart from the thread 2. The hard component 4 and the soft component 5 can be seen here, in particular PC 25 2279 C 46 / 63 14 . January 2026

[0219] The casing surfaces have ventilation slots extending through them to ventilate the water jet.

[0220] Figure 12 shows the sanitary outlet unit 1 from Figure 11 in a perspective sectional view from above. It is particularly evident that the soft component 5 is designed at a distance from the thread 2 and that the hard component 4 reinforces the soft component in a region 19 in the area of ​​the gripping surface 3.

[0221] Figure 13 shows the sanitary outlet unit 1 from Figures 11 and 12 in a bottom view. It can be seen that the soft component 5 has an outlet structure 21. The outlet structure 21 is designed in the form of a lattice structure. It has two different types of openings 22, 23. The first type of opening 22 is formed in a central area of ​​the outlet structure 21 and is intended solely for the discharge of a water jet. The second type of opening 23 is formed on a circumferential edge of the outlet structure 21 surrounding the central area, with several openings of the second type 23 being formed side by side.

[0222] The openings of the second type 23 have a greater extent in the circumferential direction of the sanitary outlet unit 1 than the openings of the first type 22. The openings of the second type 23 are thus suitable for allowing the counter-geometry 37 of an assembly tool 31, and in particular the stepped profile with the crenellated structures 38 of the assembly tool 31 shown in Figure 1, to pass through them. Due to the greater extent of the openings of the second type 23, the counter-geometry 37 can be dimensioned accordingly larger, see PC 25 2279 C 47 / 63 14 January 2026

[0223] that it has sufficient stability for assembly and / or disassembly.

[0224] The arrangement of the openings of the second type of openings 23 is such that the counter geometry 37, which passes through the openings of the second type of openings 23, can be placed with the contact surfaces 39a on the contact surfaces 36b of the receiving geometry 30 or with the contact surfaces 39b on the contact surfaces 36a of the receiving geometry 30.

[0225] It is also visible here that a surface area 26 of the outlet unit 1, in which water droplets or water deposits can collect, is provided with a water-repellent, in this case soft, component 5.

[0226] Figure 14 shows a sectional view of the sanitary outlet unit 1 shown in Figures 11 to 13 with the assembly tool 31 inserted. The assembly tool 31 shown here corresponds to the assembly tool 31 shown in Figure 1, which can therefore be advantageously used for sanitary outlet units 1 with different designs. The assembly tool 31 is inserted into the sanitary outlet unit 1 such that the counter geometry 37, which passes through the openings of the second type of openings 23, bears against the contact surfaces 39b of the receiving geometry 30. It can be seen that the extent of the crenellated structures 38 of the counter-geometry 37 in the circumferential direction of the sanitary outlet unit 1 is smaller than the extent of the openings of the second type of openings 23. As a result, the assembly tool 31 remains in place even when PC 25 2279 C 48 / 63 14 . January 2026

[0227] The component is movable in the circumferential direction, i.e., rotatable with some play.

[0228] If the assembly tool 31 is not inserted into the sanitary outlet unit 1, a water jet can emerge through the first type of openings 22 and the second type of openings 23. The water jet is not, or only minimally, affected by the receiving geometry 30. This is because the second sections 33 of the receiving geometry 30, which in this embodiment are designed as ribs 35, are located upstream adjacent to grid structures of the outlet structure 21, which already slightly break the water jet. Furthermore, the fact that the openings of the second type of openings 23 are flush with the inner surface 34 allows the water jet to pass through these openings largely unimpeded.

[0229] The discharge unit 1 with discharge structure 23 shown in Figures 11 to 14 is designed in such a way that an assembly tool 31 of the type shown in Fig. 1 can be connected through the discharge structure 23 to the receiving geometry 30 formed upstream of the discharge structure 23. Thus, the discharge unit 1 shown in Figures 11 to 14 can be easily assembled and disassembled despite the discharge structure 23, as described here.

[0230] Figure 15 shows another embodiment of the sanitary outlet unit 1 described here in a perspective, partial sectional view. It is shown in particular that the gripping surface 5, a sealing element 7 located in the thread 2 formed from the hard component 4, and an inflow-side sealing element 11 are formed integrally from the soft component 5.

[0231] Therefore, a separate sealing ring 20 (see Fig. 10) is unnecessary. It can be said that the sealing element 7PC 25 2279 C 49 / 63 14 January 2026

[0232] The gripping surface 5 connects to the sealing element 11, which is axially spaced from it. The gripping surface 3 of the soft component 5 is shown in section such that the haptic ribs 27 of the hard component 4 located beneath it are visible. Depending on the dimensions and arrangement of the gripping surface 3 and the haptic ribs 27, different haptic impressions can be generated.

[0233] Figure 16 shows the sanitary outlet unit 1 from Figure 15 in a perspective, partial sectional view from below. With regard to the recording geometry 30, particular reference is made to the description of Figures 1 to 3, which is applicable here.

[0234] Figure 17 shows the sanitary outlet unit from Figures 15 and 16 in its state of use with the aerator cartridge 24 inserted in a partial sectional view.

[0235] Figure 18 shows the sanitary outlet unit 1 from Figure 17 in a perspective, partial sectional view. The sanitary outlet unit 1 and the sanitary fitting 13 are cut in such a way that it is visible how the hard component 4 (left) and the soft component 5 (right) can each form the thread 2. The aerator cartridge 24, inserted into a mounting sleeve 25 of the sanitary outlet unit 1, is not shown in section. A spout structure 23 is visible through its ventilation window 28.

[0236] Depending on the choice of material for the hard component 4 and the soft component 5, the sanitary outlet unit 1 can be manufactured, for example, using injection molding and / or dipping. PC 25 2279 C 50 / 63 14 January 2026

[0237] Figures 19 to 24 show different

[0238] The design of the sanitary outlet unit 1 is shown in a bottom view, with geometrically different receiving geometries. In Figure 19, the second sections 33 of the receiving geometry 30 are designed as the ribs 35 described here and shown, for example, in Figures 1 to 3. These ribs are formed on the inside 34 of the sleeve-shaped sanitary outlet unit 1 and have a square cross-section. The receiving geometry 30 has eight equidistantly arranged ribs 35.

[0239] In the embodiment shown in Figure 20, the ribs 35 each have a triple structure in cross-section, consisting of three adjacent, obtuse triangular elements. Otherwise, the ribs are designed as described above.

[0240] In the embodiment shown in Figure 21, the ribs 35 each have a double structure in cross-section, consisting of two adjacent semicircular elements. Otherwise, the ribs are designed as described above.

[0241] In the embodiment shown in Figure 22, the ribs 35 each have a trapezoidal cross-section. Otherwise, the ribs are designed as described above.

[0242] In the embodiment shown in Figure 23, the ribs 35 have a square cross-section and are hollow. Compared to the square ribs 35 shown in Figure 19, the ribs in this embodiment are larger. However, there are only two of the ribs 35. Otherwise, the ribs are designed as described above. PC 25 2279 C 51 / 63 14 January 2026

[0243] In the embodiment shown in Figure 24, a wave-shaped profile is formed on the inside 34 of the sleeve-shaped sanitary outlet unit 1. The second sections 33 of the receiving geometry 30 can be considered as the ribs 35 of the wave-shaped profile projecting towards the center of the sleeve-shaped sanitary outlet unit 1.

[0244] Figure 25 shows another alternative embodiment of the sanitary outlet unit described here in an intended arrangement in a sectional view from the side.

[0245] The outlet unit 1 is designed as a mounting sleeve 25. Two contact surfaces 42, 43 are also provided for an aerator cartridge (not shown in this figure) and / or for an aerator (also not shown). The contact surfaces 42, 43 are spaced apart from each other in the longitudinal direction L. The downstream contact surface 42 is formed on the section of the sanitary outlet unit 1 that has the downstream side B. It can therefore be formed in the area of ​​the described receiving geometry 30 and preferably overlaps with it in the longitudinal direction L. The upstream contact surface 43 is formed with a small distance to the fastening element 2, in particular the thread 2.

[0246] Due to the contact surfaces 42, 43, the outlet unit 1 can serve as a support or a retaining ring for the aerator cartridge or for the aerator.

[0247] The aerator cartridge or aerator can, for example, be arranged in the outlet unit 1, preferably in the free space of the outlet unit 1. PC 25 2279 C 52 / 63 14 January 2026

[0248] When the outlet unit 1, as shown in Figure 25, is attached to the sanitary fitting 13 by means of the fastening element 2, in particular the thread 2, and the aerator cartridge or aerator rests against the contact surfaces 42, 43 as intended, the aerator cartridge or aerator can be securely fixed to a water outlet 12 of the sanitary fitting 13 by means of the support or the retaining ring. The contact surfaces 42, 43 press against the aerator cartridge or aerator and press it / the aerator along the longitudinal direction L against a ring seal 44 and a fluid-carrying system 45 arranged on the upstream side of the ring seal 44 in the sanitary fitting 13. This presses the aerator cartridge or aerator, the ring seal 44, and the fluid-carrying system 45 against the sanitary fitting 13 and thus securely fastens them in the sanitary fitting 13 by means of the outlet unit 1.Due to the ring seal 44, the aerator cartridge or aerator and the fluid-carrying system 45 are tightly connected. Because of the contact surface 42 formed on the downstream side, the aerator cartridge or aerator can be positioned particularly close to the outlet opening 47 of the outlet unit 1 and thus supported along almost its entire length along the longitudinal axis L. This allows for a particularly secure fit. The spaced-apart second contact surface 43 further improves the fit.

[0249] The contact surfaces 42, 43 are designed in an annular shape to distribute the mechanical pressure exerted by the aerator cartridge or aerator particularly homogeneously. However, it is also possible to design at least one of the contact surfaces 42, 43, in particular the downstream contact surface 42, as an annular segment to accommodate the described receiving geometry 30, in particular the ribs 35, on it and / or at the same height. PC 25 2279 C 53 / 63 14 January 2026

[0250] The described recording geometry 30 can then be transferred to the embodiment shown in Figure 25, or the features described in connection with Figure 25 can be transferred to the other embodiments.

[0251] It can also be formed with an internal profile, for example according to one of the examples in Fig. 19-24, without disturbing the mounting surface 42, in order to form a receiving geometry 30.

[0252] The downstream contact surface 42 is designed to form a sealing surface 42 in conjunction with the aerator cartridge or aerator that rests against the contact surface 42. This makes it possible to at least reduce unwanted water leakage between the aerator cartridge or aerator and the outlet unit 1. The water can then be discharged in a controlled manner along a separation edge 46 of the outlet opening 47 of the outlet unit 1.

[0253] The downstream contact surface 42 is inclined relative to the longitudinal axis L of the sanitary outlet unit 1. It is conically tapered along the intended outflow direction from the outlet unit 1, which is parallel to the longitudinal axis L, so that the flow cross-section in the outlet unit 1 decreases in this direction. The angle between the inclined contact surface 42 and the longitudinal axis L is less than 45° and more than 15°, namely 30°. The inclined downstream contact surface 42 prevents static overdetermination of the support of the aerator cartridge or aerator on the upstream contact surface 43 and the downstream contact surface 42. The aerator cartridge or aerator can be mounted on the upstream contact surface PC 25 2279 C 54 / 63 14. January 2026

[0254] 43 be fixed and move slightly, for example by elastic deformation, along the downstream contact surface 42 before it has assumed a firm fit on both contact surfaces 42, 43 .

[0255] The downstream contact surface 42 forms an undercut 48 opposite the outlet opening 45 of the sanitary outlet unit 1. This means that a molded part for shaping the internal geometry of the outlet unit 1 cannot be pulled out through the outlet opening 45. The wall of the sanitary outlet unit can therefore be particularly thin. Due to the thin wall, the size of the upstream contact surface 43 is reduced. However, the aerator cartridge or aerator can still be securely held in the outlet unit 1 thanks to the additional downstream support surface 42. Furthermore, material can be saved during the manufacture of the outlet unit 1, and the flow cross-section in the outlet unit 1 above the outlet opening 45 can be increased.

[0256] The outlet unit also features ventilation slots 49 extending through the outer surfaces, particularly in the hard component (not shown in detail here) and / or in the soft component (not shown here), for the purpose of aerating a water jet. The ventilation slots 49 are located directly adjacent to the downstream end of the fastening element 2, in particular the thread 2. This allows the ventilation slots 49 to be positioned particularly close to the upstream end of the outlet unit 1 and at the level of a disassembly stage of an aerator arranged in the outlet unit 1.

[0257] / Reference list PC 25 2279 C 55 / 63 14 January 2026

[0258] Reference symbol list

[0259] 1 sanitary outlet unit

[0260] 2 Fastening element, thread

[0261] 3 Gripping surface

[0262] 4 hard components

[0263] 5 soft components

[0264] Section 6 of the soft component

[0265] 7 Sealing element

[0266] 8 radial direction

[0267] 9 Scope section

[0268] 10 front sieve

[0269] 11 Sealing element

[0270] 12 Water outlet

[0271] 13 Sanitary fittings

[0272] 14 Outer ribs of the aerator cartridge 15 Fitting threads

[0273] 16 threads

[0274] Channel 17

[0275] 18 Section of the soft component

[0276] Area 19

[0277] 20 sealing rings

[0278] 21 Phase-out structure

[0279] 22 first type of breakthroughs

[0280] 23 second type of breakthroughs

[0281] 24 aerator cartridges

[0282] 25 Mounting sleeve

[0283] 26 Surface area

[0284] 27 haptic ribs

[0285] 28 ventilation windows

[0286] 29

[0287] 30 Recording geometry

[0288] 31 assembly tools

[0289] 32 first sections of the recording geometry PC 25 2279 C 56 / 63 14 January 2026

[0290] 33 second sections of the recording geometry

[0291] 34 Inside

[0292] 35 ribs

[0293] 36a, 36b Contact surfaces of the recording geometry

[0294] 37 Counter-geometry

[0295] 38 crenellated structures

[0296] 39a, 39b Contact surfaces of the opposite geometry

[0297] 40 Interior

[0298] 41 attacks

[0299] 42 (downstream) mounting surface, sealing surface

[0300] 43 (inflow-side) installation area

[0301] 44 ring seal

[0302] 45 fluid-carrying system

[0303] 46 Tear-off edge

[0304] 47 Outlet opening

[0305] 48 Undercut

[0306] 49 ventilation slots

[0307] A Inflow side

[0308] B Outflow side

[0309] L Longitudinal axis

[0310] / Claims

Claims

PC 25 2279 C 57 / 63 14 . January 2026 Claims 1. Sanitary outlet unit (1) with a fastening element (2), in particular thread (2), and a gripping surface (3), characterized in that the sanitary outlet unit (1) has an internal receiving geometry (30) for an assembly tool (31).

2. Sanitary outlet unit ( 1 ) according to the preceding claim, characterized in that the sanitary outlet unit ( 1 ) is a mouthpiece .

3. Sanitary outlet unit ( 1 ) according to the preceding claim, characterized in that the sanitary outlet unit ( 1 ) is designed in an annular and / or sleeve-shaped form, and / or that an interior space ( 40 ) of the sanitary outlet unit is designed as a free space .

4. Sanitary outlet unit (1) according to one of the preceding claims, characterized in that a stop (41) is formed between the fastening element (2), in particular thread (2), and the gripping surface (3), in particular an external stop that acts at least partially in an insertion direction of the outlet unit.

5. Sanitary outlet unit (1) according to one of the preceding claims, characterized in that the receiving geometry (30) is suitable for producing a mechanical connection with a counter-geometry (37) of the assembly tool (31), in particular wherein the mechanical connection is a positive-locking connection acting in at least one direction transversely to a longitudinal axis (L) of the sanitary outlet unit (1). PC 25 2279 C 58 / 63 14 January 2026 6. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) is accessible through an outlet opening .

7. Sanitary outlet unit ( 1 ) according to the preceding claim, characterized in that an outlet structure is formed or arranged at the outlet opening, in particular wherein the outlet structure is formed or arranged downstream of the receiving geometry at the outlet opening.

8. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the fastening element (2 ) , in particular thread (2 ) , and the gripping surface (3) are each formed from a component made of metal or of hard plastic, or that the fastening element (2 ) , in particular thread (2 ) , is formed at least partially from a hard component (4 ) and / or the gripping surface (3) is formed at least partially from a soft component (5 ).

9. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) is at least partially non-circular in a cross-section oriented orthogonally to one or the longitudinal axis (L) of the sanitary outlet unit ( 1 ), in particular wherein the cross-section is partially or completely elliptical, polygonal or as a combination of different, composite geometries.

10. Sanitary outlet unit (1) according to one of the preceding claims, characterized in that the receiving geometry (30) has at least two in a PC 25 2279 C 59 / 63 14 . January 2026 The circumferential direction of the sanitary outlet unit ( 1 ) has alternatingly arranged, geometrically different sections (32, 33 ).

11. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) has round sections (32 ) and sections (33) projecting towards a center of the sanitary outlet unit ( 1 ) relative to the round sections (32 ).

12. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) has round sections (32 ) and sections projecting outwards from one or the center of the sanitary outlet unit relative to the round sections (32 ).

13. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) has sections (33) which each have at least one contact surface (36a, 36b) formed transversely, in particular orthogonally, to one or the circumferential direction of the sanitary outlet unit ( 1 ).

14. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the receiving geometry (30) has ribs (35), in particular wherein the ribs (35) are formed on an inner side (34 ) of the sanitary outlet unit ( 1 ), further in particular on the inner side (34 ) of the sleeve-shaped sanitary outlet unit ( 1 ).

15. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the PC 25 2279 C 60 / 63 14 . January 2026 The receiving geometry (30) is formed by the hard component (4) and / or is formed integrally with the fastening element (2), in particular thread (2).

16. Sanitary outlet unit ( 1 ) according to the preamble of claim 1 or according to one of the preceding claims, characterized in that the sanitary outlet unit ( 1 ) has a contact surface (42, 43) for a flow regulator cartridge and / or for a flow regulator, in particular wherein the contact surface (42, 43) is designed in an annular or ring-segment shape and / or wherein the contact surface (42 ) is configured to form a sealing surface.

17. Sanitary outlet unit ( 1 ) according to the preceding claim, characterized in that the contact surface (42 ) is formed on a section of the sanitary outlet unit ( 1 ) having a downflow side (B) and / or is inclined with respect to a longitudinal axis (L) of the sanitary outlet unit ( 1 ) and / or forms an undercut (48 ) opposite a discharge opening (47 ) of the sanitary outlet unit ( 1 ).

18. Sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that the hard component (4 ) and / or the soft component (5) have ventilation slots (49) extending through the outer surfaces for the purpose of ventilating a water jet, in particular wherein the ventilation slots (49) are arranged on the downstream side of the fastening element (2 ), in particular the thread (2 ), preferably directly adjacent thereto.

19. Sanitary fitting (13) with a sanitary outlet unit (1) according to one of the preceding claims. PC 25 2279 C 61 / 63 14 January 2026 20. Assembly tool (31 ) for a sanitary outlet unit ( 1 ) according to one of the preceding claims, characterized in that a counter geometry (37 ) is geometrically suitable for the receiving geometry (30) of the sanitary outlet unit ( 1 ), in particular being able to be positively connected to the receiving geometry (30).

21. System comprising a sanitary outlet unit ( 1 ) according to one of claims 1 to 18 or a sanitary fitting ( 13 ) according to claim 19 and an assembly tool (31 ) with a counter geometry (37 ) wherein the receiving geometry (30) of the sanitary outlet unit ( 1 ) and the counter geometry (37 ) of the assembly tool (31 ) are geometrically compatible, in particular geometrically complementary, to each other.

22. Series of sanitary outlet units, comprising at least two variants of sanitary outlet units, wherein a first variant ( 1 ) is configured according to one of claims 1 to 18, wherein a second variant has a receiving geometry configured on the front and / or outside, wherein the receiving geometry (30) of the first variant ( 1 ) and the receiving geometry of the second variant are geometrically compatible, in particular geometrically complementary, to a counter geometry of a common assembly tool, in particular to a counter geometry (37 ) of a common assembly tool (31 ) according to claim 17.

23. Method for forming or disassembling a sanitary fitting (13) with a sanitary outlet unit (1) according to any one of claims 1 to 18 using an assembly tool with a counter geometry, in particular an assembly tool (31) according to claim 17, comprising the following steps: PC 25 2279 C 62 / 63 14 January 2026 - Positioning the counter geometry ( 37 ) of the assembly tool ( 31 ) on the receiving geometry ( 30 ) of the sanitary outlet unit ( 1 ) , - Rotating the assembly tool ( 31 ) about one or the longitudinal axis ( L ) of the sanitary outlet unit ( 1 ). / Summary

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