Sanitary insert with a reducing step which has a disk-shaped, elastically deformable regulating element

Abstract

The invention relates to a sanitary insert (1) which has a regulating profile (4) and an elastically deformable regulating element (3) supported on at least two regulating projections (12, 13) and held by a projection (5) and which allows a throughflow quantity to be regulated with less noise.

Description

[0001] PC 25 2223 C January 16, 20266

[0002] Sanitary insert with a reducing stage that has a disc-shaped, elastically deformable control body.

[0003] The invention relates to a sanitary insert part, with a reduction stage, which has a disc-shaped, elastically deformable control body that interacts transversely to its disc shape with a control profile to reduce the flow of water through the reduction stage.

[0004] The invention further relates to a sanitary insert part, with a reduction stage, which has a disc-shaped, elastically deformable control body which, transverse to its disc shape, interacts with a control profile to reduce the flow of water through the reduction stage, wherein the control body is placed transversely to its disc shape onto a projection.

[0005] The invention further relates to a sanitary insert part with a reduction stage, which has a disc-shaped, elastically deformable control body which, transverse to its disc shape, cooperates with a control profile to reduce the flow of water through the reduction stage, wherein the control profile has at least one control projection which provides a contact surface at its contact end.

[0006] Finally, the invention relates to a sanitary insert with a reducing stage comprising a disc-shaped, elastically deformable control element which, transverse to its disc shape, interacts with a control profile to reduce the flow of water through the reducing stage, wherein the control profile has at least two control projections that protrude from a base. PC 25 2223 C 2 / 41 16 January 2026

[0007] The invention is based on the objective of enabling low-noise control of water quantities with consistent control behavior via a compact sanitary insert with a deformable control body.

[0008] Sanitary inserts with deformable control elements for the pressure-controlled regulation of water quantities are known from practice.

[0009] To solve the aforementioned problem, the features of claim 1 are provided according to the invention. In particular, to solve the aforementioned problem in a sanitary insert of the type described above, it is proposed according to the invention that the projection at its free end has a retaining structure that secures the control body.

[0010] The sanitary component could, for example, be a flow regulator.

[0011] The control profile can, for example, have control projections of varying heights on which the control body is supported and via which different pressure ranges with different flow rates can be formed by deformation of the control body by the water pressure of the flowing water.

[0012] A particular advantage is that the holding structure prevents the control body from slipping and / or sliding out due to backflow over the free end of the projection caused by the different pressures of the flowing water.

[0013] In a further advantageous embodiment of the invention, the holding structure can be designed as a material thickening. PC 25 2223 C 3 / 41 16 January 2026

[0014] The sanitary insert can, for example, be an injection-molded part, whereby the material thickening of the projection of the sanitary insert can, for example, be cost-effectively injection-molded directly onto the free end of the projection during the manufacturing process.

[0015] Furthermore, it may also be provided, for example, that the material thickening is a separate element from the projection, which interacts with the retaining structure, for example, by force-fit, form-fit, and / or friction-fit. Thus, the material thickening can, for example, have an internal thread which can be screwed onto an external thread of the projection and thus serve as a retaining structure.

[0016] A particularly advantageous benefit of thickening the material is that it secures the control element in a predefined position on the projection, thus preventing it from loosening or slipping out in a cost-effective manner. This is especially true when the thickened material is larger than the inner diameter of the opening in the control element required to mount it onto the projection.

[0017] In a further advantageous embodiment of the invention, it can be provided that the holding structure is arranged at a distance from an upstream side of the control body.

[0018] This advantageously allows for a defined movement of the control body on the projection, preventing it from slipping off or detaching from the projection. For example, this also enables the control body to move into a defined operating position, such as during initial use. PC 25 2223 C 4 / 41 16 January 2026

[0019] In a further advantageous embodiment, the invention can provide that the control body can be attached to the projection in at least two orientations.

[0020] This is particularly advantageous, for example, as it prevents the control element from being accidentally placed incorrectly on the projection. The control element can thus be rotated 180° along its longitudinal axis before being placed on the projection, without resulting in an incorrect installation position. A downstream side of the control element then becomes the upstream side after this 180° rotation, and vice versa. This also allows the Poka-Yoke principle to be implemented in quality management.

[0021] In a further advantageous embodiment of the invention, it can be provided that the projection downstream of the free end forms a support shoulder for the control body, wherein the support shoulder projects at least partially into the control profile.

[0022] At least in sections, this can mean that the bearing shoulder is formed between rule projections of varying heights that exhibit the rule profile.

[0023] Particularly advantageous, for example, is the achievement of improved control behavior, since the support shoulder enables mediation between the different levels of control advantages.

[0024] Alternatively or additionally, the features of the dependent claim, which relates to a sanitary insert, are provided according to the invention to solve the aforementioned problem. In particular, this is thus used to solve the aforementioned PC 25 2223 C 5 / 41 16 January 2026

[0025] The object of the invention in a sanitary insert of the type described above is that an opening formed on the control body to receive the projection has a rotation lock against rotation of the control body around the projection.

[0026] The defined features may be features that have already been described and / or claimed.

[0027] For example, the projection can be designed with a hexagonal outer structure, including, for instance, an integrated guide rail, and the opening can have a correspondingly adapted inner structure. This, particularly due to the guide rail, not only prevents the control element from rotating but also simplifies assembly and defines a predetermined mounting direction for the control element. Alternatively, the projection can have a round outer structure with a guide rail, and the opening can also have a correspondingly adapted inner structure. In this case, the guide rail not only facilitates the guided placement of the control element onto the projection but also simultaneously forms the anti-rotation device itself.The outer structure of the projection, on the other hand, can also be formed without a guide rail and / or by other geometric outer structures that differ from the aforementioned design forms, while the inner structure of the opening of the control body can, for example, have structures that differ from the outer structure of the projection.

[0028] In a further advantageous embodiment, the control body can be arranged to be displaceable along the projection. PC 25 2223 C 6 / 41 16 January 2026

[0029] The term "along the projection" can be understood as referring to the projection's longest extent. A certain degree of play in the control body is particularly advantageous, allowing it to shift into a working position, for example, during initial use. This is especially beneficial if the projection has a retaining structure at its free end, such as one that has already been used.

[0030] Another advantage is that this ensures that the controlled body can only move in predefined degrees of freedom.

[0031] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is thus proposed according to the invention that, in the sanitary insert or a sanitary insert part of the type described at the outset, at least one insert, which fills a flow path, is arranged downstream of the reduction stage.

[0032] The defined features may be features that have already been described and / or claimed.

[0033] The term "downstream of the reduction stage" can be understood to mean that the flowing water, after passing through the reduction stage, meets the inlet.

[0034] Particularly advantageous is the ability to influence flow characteristics upstream of the outlet of the flowing water from the sanitary fitting and thus before it emerges from a sanitary fixture. PC 25 2223 C 7 / 41 16 January 2026

[0035] For example, the insert can be located upstream of a dismantling stage. The insert can thus, for instance, be part of an outflow-side outlet stage of the sanitary insert.

[0036] In a further advantageous embodiment of the invention, it can be provided that the insert has a textile surface structure.

[0037] A highly positive effect that can be achieved by the textile surface structure downstream of the reduction stage is that noise caused by the flowing water can be significantly reduced.

[0038] Another advantageous embodiment of the invention may provide that the insert is a grid, in particular wherein the or a textile surface structure is supported on the grid.

[0039] A particularly advantageous solution is to create a support for the textile structure that opposes the flow direction. This ensures the textile structure remains dimensionally stable and is not washed out of the sanitary fitting. Furthermore, the support is permeable to water thanks to the grid, thus guaranteeing the passage of flowing water.

[0040] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary component, are provided according to the invention. In particular, to solve the aforementioned problem, it is thus proposed according to the invention that the PC 25 2223 C 8 / 41 16 January 2026

[0041] The control profile has at least two, preferably three, control advantages of different heights.

[0042] The defined features may be features that have already been described and / or claimed.

[0043] The control body is preferably placed on and supported by at least two, preferably three, control projections.

[0044] Under the pressure of the flowing water, the elastic control element can deform in such a way that a fluid path in the form of at least one control gap is exposed and / or closed off by the control projections. Advantageously, the water flow rate can then be regulated by elastic deformation of the control element and the resulting variation in the degree of opening of the control gap. Thus, a larger clear width of the control gap results in a higher flow rate, and a smaller clear width of the control gap results in a lower flow rate of the flowing water.

[0045] It can be provided that three tall, adjacent control projections and two shorter, adjacent control projections are formed. In such a configuration, the control element is supported, at least partially, by the tall control projections in the low-pressure range. The clear width of the control gap is thereby increased. This can, for example, affect a pressure range of 0.5 to 1 bar. The increased clear width of the control gap, through which the flowing water passes in this pressure range, can be referred to as a low-pressure chamber. Advantageously, a large volume of water can be allowed to pass through at low water pressure, preferably until a setpoint is reached. PC 25 2223 C 9 / 41 January 16, 2026

[0046] When a water pressure exceeding one bar is reached, the elastic control element deforms in the direction of flow until the sections of the control element not supported by the tall control projections contact the shorter control projections. The clear width of the control gap decreases until it reaches a setpoint defined by the height of the shorter control projections. This allows the flow rate to remain constant over a wide pressure range.

[0047] It can be said that the control element, at least during operation where pressure is applied by the flowing water, rests on at least one of the at least two control projections. The at least one control projection thus forms at least one contact point of the control element. For example, it may also be provided that the control element does not contact any control projection in a pressureless state. However, it may also be provided that the control element does contact at least one control projection in a pressureless state.

[0048] The term "adjacent" can be understood as referring to the area along the control gap, which extends in the circumferential direction of the sanitary insert.

[0049] In one embodiment of the invention, it can be provided that the control profile has at least one control projection that is shorter than its two adjacent control projections.

[0050] For example, the control profile may initially have three adjacent, equally high control protrusions, for example in the configuration already described. Furthermore, three additional, shorter protrusions, for example opposite the high ones, may be included. PC 25 2223 C 10 / 41 16 January 2026

[0051] Control edges are formed, with at least one control edge being shorter than its two adjacent control edges. This advantageously allows for optimization of the flow rate and thus the control behavior.

[0052] In a further advantageous embodiment of the invention, it can be provided that a support shoulder for the control body is formed between the control projections of different heights, in particular so that the control body can be mediated between the control projections of different heights via the support shoulder.

[0053] This can be particularly advantageous, for example, in improving the control behavior, especially in the high-pressure range.

[0054] In a further advantageous embodiment of the invention, it can be provided that the sum of the length of a second control projection adjacent to a first control projection and the length of a second control projection adjacent to the first control projection is smaller than the length of the first control projection.

[0055] This results in at least one control projection, for example, a middle control projection of three short control projections, which is correspondingly higher than its two adjacent control projections. Since the control element is supported section by section by the taller and section by section by the shorter control projections in the overpressure area, airborne noise is generated in an intermediate area where the control element is not supported, due to the flowing water, which is accompanied by a high noise level. To advantageously counteract this noise level, at least one PC 25 2223 C 11 / 41 16 January 2026

[0056] The control element is slightly taller than adjacent control elements, so that the control element comes into contact with a support surface earlier in the overpressure range, thereby reducing the control element's vibration range. This allows the control element's vibration range to be shifted into an inaudible frequency range.

[0057] The shortest control lead, for example the second or third control lead, can be so short that it has no influence on the control behavior, but only on the lower noise generation.

[0058] In a further advantageous embodiment of the invention, it can be provided that the sum of the length of a first control projection and the length of a second control projection adjacent to the first control projection is smaller, in particular at most half as large, as the length of a third control projection adjacent to the first control projection.

[0059] In addition to the already described reduction in noise generation, a particularly advantageous feature is the ability to define a flow class, since the flow class can be determined by the ratio of the control projection heights to each other.

[0060] Due to the different heights of the control projections, different support points of the control body can be defined along its circumference, which in turn allows for a precise setting of a control position and thus of the control behavior of the control body.

[0061] In a further advantageous embodiment of the invention, it can be provided that the control profile includes at least one PC 25 2223 C 12 / 41 16 January 2026

[0062] has a rule advantage that is higher than its two adjacent rule advantages.

[0063] The term "higher" here corresponds to the previously used term "longer". The higher the control projection, the longer it is. Generally speaking, the length and height of the control projections refer to a longitudinal direction of the sanitary fitting.

[0064] This allows for any variation in the lengths or heights of the adjacent control projections, enabling the control behavior, flow class and / or noise development to be universally adapted to different conditions.

[0065] In the previously described possibilities for the design of the control projections, it may be provided that the control body has different material properties at the sections where it is not supported by a control projection than at the points where it is supported by the control projections.

[0066] For example, it may be provided, alternatively or additionally, that the control projections are movable and that the heights of the control projections are individually adjustable.

[0067] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary fitting, are provided according to the invention. In particular, to solve the aforementioned problem, it is proposed according to the invention that a raised area is formed on the contact surface of the sanitary insert or a sanitary fitting of the type described at the outset. PC 25 2223 C 13 / 41 16 January 2026

[0068] The defined features may be features that have already been described and / or claimed.

[0069] The contact surface can define a support area for the control body.

[0070] The raised section on the contact surface, preferably rounded, enables precise control behavior, since the control element, for example under increasing pressure, does not contact the contact surface directly, but first the raised section. Furthermore, the raised section can be used to define a stop for an operating position of the control element and / or to achieve alignment of the control element during operation.

[0071] The control projection, which forms the contact surface with the raised area, can, for example, be a previously described and / or claimed high control projection, so that the control element contacts the raised area even in low pressure ranges or in a pressureless state before the contact surfaces of further control projections are contacted as the pressure increases. Additional contact surfaces of further control projections with a raised area can also be formed.

[0072] In a further advantageous embodiment, it can be provided that the raised section is spaced apart on all sides to limit the contact area.

[0073] This can, for example, result in a contact pressure of the regulating body on the contact surface or other

[0074] Contact surfaces of further control projections are reduced, since the control body first contacts the elevation spaced away from the contact surface, pressure points on the control body PC 25 2223 C 14 / 41 16 January 2026

[0075] Additional contact surfaces without enlargement can reduce or even prevent the risk.

[0076] In a further advantageous embodiment, it can be provided that the increase defines a first contact area to the control body.

[0077] For example, the first contact area, or any first contact area, may have an area smaller than the area of ​​a cross-section of the associated control projection.

[0078] The contact area can be designed, for example, to allow point contact with the control body. Alternatively, the raised area can define a linear contact area with the control body. Generally speaking, the primary purpose of the first contact area is to absorb the forces acting during operation.

[0079] This is particularly advantageous because the control element is only subjected to point-like, line-like or other, for example elliptical, loads at the contact point even at high pressures, thus achieving a long service life of the control element through improved force distribution with less wear.

[0080] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary component, are provided according to the invention. In particular, to solve the aforementioned problem, it is thus proposed according to the invention that in PC 25 2223 C 15 / 41 16 January 2026

[0081] The substrate must have at least one channel that leads through the control profile in one flow direction.

[0082] The defined features may be features that have already been described and / or claimed.

[0083] The base can be formed by a basic body of the sanitary insert, from which the standard projections extend along the sanitary insert.

[0084] It can be designed so that the channel, or even several channels, form a nozzle shape, which advantageously creates a suction effect on the control body. The nozzle shape can, for example, be oriented in a plane parallel to the control body. This allows for very low flow rates.

[0085] Furthermore, an additional control gap or regulation gap is defined by the channel.

[0086] In a further advantageous embodiment of the invention, it can be provided that the channel runs at least on one side spaced apart from an adjacent control projection.

[0087] A flow direction enabled by the control profile is particularly advantageous. Furthermore, an additional control gap can be defined, allowing for optimization of the flow rate.

[0088] In a further advantageous embodiment, the invention can provide that a control projection is formed in the channel.

[0089] For example, it may be provided that the rule advantage, in particular a high rule advantage, is centered PC 25 2223 C 16 / 41 16 January 2026

[0090] in the channel and that at least one other control projection is adjacent to the control projection.

[0091] This allows for optimization of the flow rate in the high-pressure range.

[0092] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is proposed according to the invention that a drain opening connected downstream of the reducing stage has a clear cross-sectional area that widens in the direction of flow.

[0093] The defined features may be features that have already been described and / or claimed.

[0094] The drain opening may be the opening of the control gap or regulating gap already described and / or claimed.

[0095] Particularly advantageous is the improved flow of the water through the widening clear cross-sectional area, while simultaneously reducing noise.

[0096] The clear cross-sectional area can be achieved, for example, by a conical base to which, for example, the previously described and / or claimed projection on which the control element is mounted is integrally formed. The conical shape of the base thus creates a downwardly widening impact surface for the water flowing through the reduction stage. PC 25 2223 C 17 / 41 16 January 2026

[0097] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is proposed according to the invention that a drain opening downstream of the reducing stage has an inlet rounding.

[0098] The defined features may be features that have already been described and / or claimed.

[0099] The rounded inlet shape is extremely advantageous in preventing flow separation of the flowing water, which in turn results in reduced noise generation due to less turbulent flow.

[0100] In particular, in combination with the already described and / or claimed widening, clear cross-sectional area of ​​the drainage opening, a further reduction in noise generation and improved flow characteristics can be achieved.

[0101] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is thus proposed according to the invention that the control body has a rounded outer edge on its side facing the control profile and / or on its side facing away from the control profile.

[0102] The defined features may be features that have already been described and / or claimed. PC 25 2223 C 18 / 41 16 January 2026

[0103] Due to the rounded outer edge of the control element on its side facing the control profile, noise generation can be reduced, as flow separation at the outer edges can be counteracted. It can also be provided that the outer edges on the side facing away from the control profile are additionally rounded to ensure that if the control element is accidentally mounted upside down, this has no effect on noise generation and / or control behavior.

[0104] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is thus proposed according to the invention that a part of a housing supporting the control profile, located laterally outside the control body, extends at most to an inflow-side side of the control body and / or to the free end of the projection or a projection.

[0105] The defined features may be features that have already been described and / or claimed.

[0106] It is particularly advantageous that the flow characteristics of the incoming water and the noise generation can be influenced by the shape of the housing, whereby a greater variation in housing shapes can be achieved if the housing extends to the inflow-side and / or to the free end of the projection. PC 25 2223 C 19 / 41 16 January 2026

[0107] In a further advantageous embodiment, the invention can provide that the housing is at least as high as a shortest control projection.

[0108] This allows for particularly advantageous material savings, as the housing can also serve as an attachment point in a pipe, for example a spout structure, or a sanitary fitting, even if the housing is only as high as a shortest control projection.

[0109] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim, which relates to the sanitary insert or a sanitary insert part, are provided according to the invention. In particular, to solve the aforementioned problem, it is proposed according to the invention that a part of a housing carrying the control profile, located laterally outside the control body, forms a groove at its base leading to the control profile.

[0110] The defined features may be features that have already been described and / or claimed.

[0111] The channel allows the incoming water to be guided in a defined manner towards the desired flow profile, thereby significantly reducing noise generation. This is because turbulent flows can be largely neutralized by the channel. The channel preferably has an increased radius.

[0112] Alternatively or additionally, to solve the aforementioned problem, the features of the dependent claim PC 25 2223 C 20 / 41 16 January 2026, which is directed to the sanitary insert, are used according to the invention.

[0113] provided. In particular, to solve the aforementioned problem in the sanitary insert of the type described above, it is proposed according to the invention that a spring-elastic element is formed which acts on the control body and, after the load has been applied, positions it again in an initial position.

[0114] The defined features may be features that have already been described and / or claimed.

[0115] It may be provided, for example, that the spring-elastic element is located downstream of the control body, away from the projection or a projection, for example the one already described and / or claimed, which receives the control body.

[0116] The spring stiffness can be used to further influence and / or adjust the control behavior, which is particularly advantageous. Another advantage can arise, for example, from the fact that the spring return force allows the control element to be moved back to its starting position in a controlled and guided manner when depressurized, thus preventing the control element from accidentally "sticking" outside its starting position.

[0117] In general, one embodiment of the invention may provide that the control body has at least two segments that are decoupled from each other. This decoupling can be achieved, for example, by separating recesses formed between the segments, so that the segments can be deformed independently of each other under water pressure. This results in decoupling, and separate flow-pressure characteristics can be defined, which can be superimposed or added together to achieve a desired overall characteristic. PC 25 2223 C 21 / 41 16 January 2026

[0118] Fixed partitions are used to separate the water flow.

[0119] The invention will now be described in more detail 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.

[0120] It shows, in a highly simplified representation,

[0121] Fig. 1 shows a two-dimensional schematic representation (left) and a side view (right) of a sanitary insert according to the invention with a control body which is received on a projection formed with a hexagonal outer structure and a guide rail, wherein the outer structure and the guide rail serve as an anti-rotation device.

[0122] Fig. 2 shows a two-dimensional schematic representation of a sanitary insert according to the invention.

[0123] 1, wherein the projection is designed with a round outer structure and a guide rail to prevent rotation,

[0124] Fig. 3 shows a two-dimensional schematic representation of a sanitary insert according to the invention, comprising a reduction stage and a control profile, wherein a projection for the control body is formed, the projection having a retaining structure at its free end.

[0125] Fig. 4 shows a two-dimensional schematic representation of a sanitary insert according to the invention, as per Fig. PC 25 2223 C 22 / 41, January 16, 2026

[0126] 3 with a different holding structure compared to Fig. 3,

[0127] Fig. 5 shows a two-dimensional schematic representation of a sanitary insert according to the invention.

[0128] 4 with a different holding structure compared to Fig. 3 and 4,

[0129] Fig. 6 shows a two-dimensional schematic representation of a sanitary insert according to the invention.

[0130] 5 with a different holding structure compared to Figs. 3 to 5,

[0131] Fig. 7 shows a two-dimensional schematic representation of a sanitary insert according to the invention in comparison to Figs. 3 to 6 of different holding structures.

[0132] Fig. 8 shows a two-dimensional schematic representation of a sanitary insert according to the invention with a different holding structure compared to Figs. 3 to 7.

[0133] Fig. 9 shows a two-dimensional schematic representation of a sanitary insert according to the invention with a different holding structure compared to Figs. 3 to 7.

[0134] Fig. 8 shows a two-dimensional schematic representation of a sanitary insert according to the invention.

[0135] 7 with a different holding structure compared to Fig. 3 to 7,

[0136] Fig. 9 shows a two-dimensional schematic representation of a sanitary insert according to the invention with imPC 25 2223 C 23 / 41 16 January 2026

[0137] Comparison to Figs. 3 to 8 of different holding structures,

[0138] Fig. 10 shows a two-dimensional schematic representation of a sanitary insert according to the invention with a different holding structure compared to Figs. 3 to 9.

[0139] Fig. 11 shows a further embodiment of a sanitary insert according to the invention in a two-dimensional schematic representation with a retaining structure screwed onto the free end of the projection,

[0140] Fig. 12 shows a sanitary insert according to the invention in a two-dimensional sectional view, wherein a textile surface structure is arranged downstream of a reduction stage,

[0141] Fig. 13 shows a sanitary insert according to the invention in a schematic representation with different height steps.

[0142] Fig. 14 shows a sanitary insert according to the invention in a schematic representation, wherein a control projection of the control profile provides a contact surface at its contact end on which a raised area is formed,

[0143] Fig. 15 shows a sanitary insert according to the invention in a schematic representation with control projections that protrude from a base, wherein a channel is formed in the base which leads through the control profile in a flow direction, PC 25 2223 C 24 / 41 16 January 2026

[0144] Fig. 16 shows a sanitary insert according to the invention in a schematic representation, wherein a drain opening with a clear cross-sectional area widening in the direction of flow is located downstream of the reduction stage, wherein the drain opening has an inlet rounding,

[0145] Fig. 17 shows a sanitary insert according to the invention in a schematic representation, wherein a spring-elastic element is formed which acts on the control body,

[0146] Fig. 18 shows a sanitary insert according to the invention in a schematic representation, wherein the control body has rounded outer edges,

[0147] Fig. 19 shows an embodiment of a control body of a sanitary insert according to the invention.

[0148] Fig. 1 shows a sanitary insert, designated as a whole by 1, with a reducing stage 2, which has a disc-shaped, elastically deformable control element 3. The control element 3 interacts transversely to its disc shape with a control profile 4 to reduce the flow of water through the reducing stage 2. The control element 3 is mounted transversely to its disc shape onto a projection 5. "Transversely to its disc shape" here means along a longitudinal extension 6 of the sanitary insert 1.

[0149] The control body 3 also has an opening 7 through which the projection 5 can be received. In the illustrated embodiment, the projection 5 has a hexagonal outer structure 8 with a guide rail 9, which facilitates the application of the control body 3. The opening 7 of PC 25 2223 C 25 / 41 16 January 2026

[0150] The control body 3 is, at least in this embodiment, adapted to the outer structure 8 and the guide rail 9.

[0151] The opening 7 of the control body 3 and the projection 5 therefore form a rotation lock against rotation of the control body 3 around the projection 5.

[0152] It is further shown that the control body is arranged to be displaceable in the longitudinal direction 6 ' , and thus along the projection 5 , since a free end 10 of the projection 5 is spaced away from an upstream side 11 of the control body 3 .

[0153] Figure 1 also shows three adjacent, tall control projections 12 on which the control body 3 is supported. Opposite these three tall control projections 12 are shorter control projections 13 (see also Figures 3 to 6 and 13). All control projections 12, 13 project from a base 27 of the sanitary insert 1.

[0154] Fig. 2 shows, in contrast to the embodiment according to Fig. 1, that the outer structure 8 of the projection 5 is largely round, with a guide rail 9 serving to insert the control body 3 through the opening 7.

[0155] Fig. 3 shows another sanitary insert 1 according to the invention. Components and functional units that are functionally and / or structurally similar or identical to the preceding embodiments are designated with the same reference numerals and are not described separately again. This applies analogously to all figures.

[0156] The control body 3 is not shown in Fig. 3 for better illustration of the sanitary insert 1. However, a retaining structure 14PC 25 2223 C 26 / 41 16 January 2026 is shown at the free end 10 of the projection.

[0157] The retaining structure 14 is formed by means of which the control body 3 is secured to the projection 5. In the illustrated embodiment, the retaining structure 14 is disk-shaped, with an outer diameter 15 of the disk-shaped retaining structure 14 being larger than an outer diameter 15' of the projection 5. It can thus be said that the retaining structure 14 is designed as a material thickening. It can further be said that the retaining structure 14 is arranged at a distance from the upstream side 11 of the control body 3, which, as already mentioned, is not shown in the illustrated embodiment. Also shown are three high control projections 12 and two short control projections 13, wherein the second, short control projection 13 is hidden in the illustrated plane by the projection 5. However, it can be said that the control profile 4 has at least two control projections 12, 13 of different heights.Downstream 16 of the free end 10 of the projection 5, on which the retaining structure 14 is formed, a support shoulder 38 is also formed for the control body 3 (not shown in detail here), which projects at least partially into the control profile 4. It can be seen that the support shoulder 38 is formed between the control projections 12 and 13 of different heights, so that the control body 3 can be mediated between the control projections 12 and 13 of different heights via the support shoulder 38.

[0158] Fig. 4 shows, in contrast to the preceding embodiment, a further sanitary insert 1 according to the invention with a retaining structure 14. The retaining structure 14 is also designed as a material thickening compared to the projection 5. The retaining structure 14 has four sections that extend transversely to the longitudinal extent 6 of the projection 5, each section of the retaining structure 14 conforming, albeit not completely, to the projection 5 along the longitudinal extent 6. PC 25 2223 C 27 / 41 16 January 2026

[0159] In contrast, the four sections of the support structure according to Fig. 5 are slightly curved downstream 16 .

[0160] Fig. 6, however, shows another sanitary insert according to the invention with a retaining structure 14, wherein the retaining structure 14 itself is formed by a crossbeam 17.

[0161] The embodiment shown in Fig. 7 features a retaining structure 14, which initially has an extension transverse to the longitudinal extension 6 of the projection 5 and a subsequent extension downstream 16.

[0162] In contrast, the retaining structure 14 shown in Fig. 8 initially extends transversely to the longitudinal extent 6 of the projection and then runs in the direction of the upstream side 11. The retaining structure thus runs offset parallel to the projection 5. The control body 3 is held, as also shown in Fig. 7, on one side by the section of the retaining structure 14 that is formed transversely to the longitudinal extent 6.

[0163] The embodiment shown in Fig. 9 differs from the embodiment shown in Fig. 8 at least in that the retaining structure 14 does not have a section extending towards the upstream side 11.

[0164] The retaining structure 14 shown in Fig. 10 is in turn formed at the free end 10 of the projection 5 by a conical thickening of material that widens towards the upstream side 11.

[0165] Another embodiment of the retaining structure 14 is shown in Fig. 11. Here, the projection 5 has an external thread 18 at its free end 10, which engages with an internal thread (not shown in detail) of the cylindrical PC 25 2223 C 28 / 41 16 January 2026

[0166] formed, retaining structure 14, can be screwed together, resulting in a material thickening.

[0167] Fig. 12 shows a further embodiment of a sanitary insert 1 according to the invention. In contrast to the preceding embodiments, an insert 19, which has a textile surface structure 20, is arranged downstream 16 of the reduction stage 2, the insert 19 filling a flow path 21. This reduces the noise generated by the flowing water.

[0168] The insert 19 is formed by a grid 22 (see right-hand illustration, which shows a perspective under-view of the sanitary insert part), with the textile surface structure 20 being supported on the grid 22.

[0169] Figure 13 shows control projections 12, 13 of different heights on the control profile 4 of the sanitary insert 1 according to the invention. The control profile 4 has three adjacent high control projections 12 and three opposite, also adjacent, short control projections 13. In the right-hand circular outline of Figure 13, it can be seen that a central, short control projection 13' is higher, or longer, than its two adjacent control projections 13. It is also possible for the two short control projections adjacent to the central, short control projection 13' to have different heights. Furthermore, in an embodiment not shown in detail, the central, short control projection 13' can be shorter than its two adjacent short control projections 13.In the illustrated embodiment, the middle, short control projection 13' is higher, or longer, than the sum of the two adjacent control projections 13. Conversely, it can be said that the sum of a PC 25 2223 C 29 / 41 16 January 2026.

[0170] The length of a second rule projection 13'' adjacent to a first rule projection 13'' (here the middle, short rule projection 13'') and the height, or length, of a third rule projection 13'' adjacent to the first rule projection 13'' (here the middle rule projection 13'') is less than the height, or length, of the first rule projection 13''. All combinations of different heights of the rule projections 12 and 13 relative to each other are conceivable. It can therefore also be provided that the sum of the length of the first rule projection 13'' and the length of a second rule projection 13'' adjacent to the first rule projection 13'' is less, in particular at most half, than the length of the third rule projection 13''. In general, it can be said that the standard profile 4 according to Fig.13 has three different rule margins 12, 13, since the middle short rule margin 13' is shorter than a high rule margin 12, where a short rule margin 13 adjacent to the middle short rule margin 13' is shorter than the middle short rule margin 13' itself.

[0171] Fig. 14 shows, in contrast to the preceding embodiments, a sanitary insert 1 according to the invention, wherein the control profile 4 has at least one control projection 12, 13, here a high control projection 12, which provides a contact surface 24 at its contact end 23, wherein a raised area 25 is formed on the contact surface 24. The raised area 25 is spaced apart on all sides from a boundary of the contact surface 24 and defines a first contact area 26 to the control body 3, which is not shown further here.

[0172] Fig. 15 shows, in contrast to the preceding embodiments, a further sanitary insert 1 according to the invention, wherein the control profile 4 is also PC 25 2223 C 30 / 41 16 January 2026

[0173] The base 27 has at least two, here three, high control projections 12 that protrude from it. Furthermore, it is shown that a channel 28 is formed in the base 27, which leads through the control profile 4 in a flow direction 29. In the illustrated embodiment, a high control projection 12 is formed in the channel 28. It can also be said that the channel 28 is spaced apart from an adjacent control projection 12 at least on one side.

[0174] Fig. 16 shows a cross-section of a further sanitary insert 1 according to the invention, in which it can be seen that a drain opening 30 following downstream 16 of the reduction stage 2 has an inlet rounding 32 and a clear cross-sectional area 31 that widens in the direction of flow, here downstream 16.

[0175] Fig. 17 shows a further embodiment of a sanitary insert 1, wherein, in contrast to the previous embodiments, a spring-elastic element 33 is formed which acts on the control body 3 and, after being loaded by the flowing water, positions it again in an initial position.

[0176] Fig. 18 shows another embodiment of a sanitary insert 1, wherein the control body 3 has a rounded outer edge 34 on its side facing the control profile 4. In the embodiment shown, however, the side facing away from the control profile 4 also has a rounded outer edge 34, which allows the control body 3 to be attached to the projection 5 in two orientations. The control behavior therefore does not change if the control body 3 is attached to the projection 5 upside down. Furthermore, a part of a housing 35 of the sanitary insert 1, which supports the control profile 4 and lies laterally outside the control body 3, forms a [connection to PC 25 2223 C 31 / 41 16 January 2026]

[0177] Control profile 4 conducting groove 36. It can also be seen that the housing 35 rises at most to an inflow-side side 37 of the control body 3. However, it can also be provided, as shown for example in the embodiment according to Fig. 17, that the housing 35 is at least as high as a shortest control projection 13 and / or rises to the free end 10 of the projection 5.

[0178] Fig. 19 shows an embodiment of the control body 3, which can be plugged onto the sanitary insert 1 according to the preceding figures, with an alternative disc-shaped design in contrast to the preceding embodiments. Here, the control body 3 has segments 39 that are decoupled from one another, i.e., each defining, for example, independent control curves. The respective separating recesses 40 effect the decoupling.

[0179] The invention is therefore based on the objective of enabling noise-reduced flow rate regulation by means of a sanitary insert 1 with a control profile 4 and an elastically deformable control body 3 supported on at least two control projections 12, 13 and taken up by a projection 5.

[0180] / Reference list PC 25 2223 C 32 / 41 16 January 2026

[0181] Reference symbol list

[0182] 1 sanitary insert

[0183] 2 reduction stage

[0184] 3 Control bodies

[0185] 4. Rule profile

[0186] 5 lead

[0187] 6 Longitudinal extension

[0188] 7 Opening

[0189] 8 Exterior structure

[0190] 9 Guide rail

[0191] 10 free ending

[0192] 11 upstream side

[0193] 12 high rule advantage

[0194] 13 short rule advantage

[0195] 13 medium, short rule advantage 13 first rule advantage

[0196] 13 second rule advantage

[0197] 13 third rule advantage

[0198] 14 Support structure

[0199] 15 Out endur chme sser

[0200] 15 Out endur chme sser

[0201] 16 downstream

[0202] 17 crossbeams

[0203] 18 external threads

[0204] 19 deployment

[0205] 20 textile surface structures

[0206] 21 Flow path

[0207] 22 grids

[0208] 23 End of contact

[0209] 24 contact area

[0210] 25 increase

[0211] 26 Contact area

[0212] 27 document

[0213] 28 ChannelPC 25 2223 C 33 / 41 January 16, 2026

[0214] 29 Flow direction

[0215] 30 Drain opening

[0216] 31 Cross-sectional area

[0217] 32 Inlet rounding

[0218] 33 spring-elastic element

[0219] 34 Outer edge

[0220] 35 cases

[0221] 36 throat

[0222] 37 inflow side

[0223] 38 support shoulder

[0224] 39 segments

[0225] 40 exceptions

[0226] / Claims

Claims

PC 25 2223 C 34 / 41 16 . January 2026 Claims 1. Sanitary insert (1) with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage, wherein the control body (3) is mounted transversely to its disc shape onto a projection (5), characterized in that the projection (5) has a retaining structure (14) at its free end (10) which secures the control body (3).

2. Sanitary insert (1) according to claim 1, characterized in that the retaining structure (14) is designed as a material thickening.

3. Sanitary insert (1) according to one of the preceding claims, characterized in that the retaining structure (14) is arranged spaced apart from an upstream side (11) of the control body (3).

4. Sanitary insert (1) according to one of the preceding claims, characterized in that the control body (3) can be placed on the projection (5) in at least two orientations.

5. Sanitary insert (1) according to one of the preceding claims, characterized in that the projection (5) downstream (16) of the free end (10) forms a support shoulder (38) for the control body (3), wherein the support shoulder (38) projects at least sectionally into the control profile (4).

6. Sanitary insert ( 1 ) according to the preamble of claim PC 25 2223 C 35 / 41 16 January 2026 1 or according to one of the preceding claims, characterized in that an opening (7) formed on the control body (3) to receive the projection (5) has a rotation protection against rotation of the control body (3) about the projection (5).

7. Sanitary insert ( 1 ) according to one of the preceding claims, characterized in that the control body (3) is arranged to be displaceable along the projection (5 ).

8. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2), which has a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, cooperates with a control profile (4) to reduce water flowing through the reducing stage (2), characterized in that downstream (16) of the reducing stage (2) at least one insert (19) which fills a flow path (21) is arranged.

9. Sanitary insert ( 1 ) according to one of the preceding claims, characterized in that the insert ( 19 ) has a textile surface structure (20 ).

10. Sanitary insert ( 1 ) according to one of the preceding claims, characterized in that the insert ( 19 ) is a grid (22 ), in particular wherein the or a textile surface structure (20 ) is supported on the grid (22 ).

11. Sanitary insert (2), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage (2), characterized in that the control profile (4) is at least PC 25 2223 C 36 / 41 16 January 2026 two, preferably three, different height control projections ( 12 , 13 ) has .

12. Sanitary insert (1) according to one of the preceding claims, characterized in that the control profile (4) has at least one control projection (12, 13) which is shorter than its two adjacent control projections (12, 13).

13. Sanitary insert according to one of the preceding claims, characterized in that a support shoulder (38) for the control body (3) is formed between the differently sized control projections (12, 13), in particular such that the control body (3) can be mediated between the differently sized control projections (12, 13) via the support shoulder (38).

14. Sanitary insert (1) according to one of the preceding claims, characterized in that the sum of the lengths of a second control projection (13'') adjacent to a first control projection (13'') and a length of a third control projection (13'') adjacent to the first control projection (13'') is less than the length of the first control projection (13'').

15. Sanitary insert (1) according to one of the preceding claims, characterized in that the sum of the length of a first control projection (13'') and the length of a second control projection (13'') adjacent to the first control projection (13'') is smaller, in particular at most half as large, as the length of a third control projection (13'''') adjacent to the first control projection (13'').

16. Sanitary insert according to one of the preceding claims, characterized in that the control profile (4) has at least one control projection (12, 13, 13'', 13'', 13'''') which is higher than its two adjacent PC 25 2223 C 37 / 41 16. January 2026 Rule advantage ( 12 , 13 , 13 '' , 13 '' ' , 13 '' '' ) is .

17. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage (2), wherein the control profile (4) has at least one control projection (12, 13) which provides a contact surface (24) at its contact end (23), characterized in that a raised area (25) is formed on the contact surface (24).

18. Sanitary insert ( 1 ) according to one of the preceding claims , characterized in that the elevation ( 25 ) is spaced apart on all sides from a boundary of the contact surface ( 24 ).

19. Sanitary insert ( 1 ) according to one of the preceding claims , characterized in that the elevation ( 25 ) defines a first contact area ( 26 ) to the control body ( 3 ).

20. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage (2), wherein the control profile (4) has at least two control projections (12, 13) which project from a base (27), characterized in that at least one channel (28) is formed in the base (27) which leads through the control profile (4) in a flow direction (29). PC 25 2223 C 38 / 41 16 January 2026 21. Sanitary insert ( 1 ) according to one of the preceding claims , characterized in that the channel ( 28 ) runs at least on one side spaced apart from an adjacent standard projection ( 12 , 13 ).

22. Sanitary insert ( 1 ) according to one of the preceding claims , characterized in that a control projection ( 12 , 13 ) is formed in the channel ( 28 ).

23. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage (2), characterized in that a downstream (16) drain opening (30) adjoining the reducing stage (2) has a clear cross-sectional area (31) that widens in the direction of flow.

24. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, cooperates with a control profile (4) to reduce the flow of water through the reducing stage (2), characterized in that a downstream (11) drain opening (30) adjoining the reducing stage (2) has an inlet rounding (32).

25. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2) comprising a disc-shaped, elastically deformable control element (3) which, transverse to its disc shape, interacts with a control profile (4) to reduce the flow of water through the reducing stage (2). PC 25 2223 C 39 / 41 16 January 2026 characterized in that the control body (3) has a rounded outer edge (34) on its side facing the control profile (4) and / or on its side facing away from the control profile (4).

26. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage comprising a disc-shaped, elastically deformable control body (3) which, transverse to its disc shape, cooperates with a control profile (4) to reduce the flow of water through the reducing stage (2), characterized in that a part of a housing (35) carrying the control profile (4) located laterally outside the control body (3) extends at most to an inflow-side side (37) of the control body (3) and / or to the or a free end (10) of the or a projection (5).

27. Sanitary insert ( 1 ) according to one of the preceding claims, characterized in that the housing (35) is at least as high as a shortest control projection ( 13) .

28. Sanitary insert (1), in particular according to one of the preceding claims, with a reducing stage (2), which has a disc-shaped, elastically deformable control body (3) which cooperates transversely to its disc shape with a control profile (4) to reduce water flowing through the reducing stage (2), characterized in that a part of a housing (35) carrying the control profile (4) which lies laterally outside the control body (3) forms a groove (36) at its base leading to the control profile (4).

29. Sanitary insert ( 1 ) , in particular according to one of the PC 25 2223 C 40 / 41 16 January 2026 preceding claims, with a reduction stage (2 ) comprising a disk-shaped, elastically deformable control body (3) which, transverse to its disk shape, interacts with a control profile (4 ) to reduce the flow of water through the reduction stage (2 ), characterized in that a spring-elastic element (33) is formed which acts on the control body (3) and, after the load has been applied, positions it back in an initial position.

30. Sanitary insert ( 1 ) according to one of the preceding claims, characterized in that the control body (3) has at least two segments (39) that are decoupled from each other. / Summary

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