Laser welding

Abstract

In a sanitary installation assembly (1) which comprises a connection part (2) and a hose (3), the connection part (2) has a hose receiving area (4) which overlaps with the hose (3) in the connecting direction, and between the connection part (2) and the hose (3) is an integrally bonded connection (5).

Description

[0001] PC 25 0875 C 2 . July 2025

[0002] Laser welding

[0003] The invention relates to a sanitary installation arrangement comprising at least one first connection part and a hose, wherein the first connection part has a hose receptacle which overlaps with the hose in a connection direction. Such a sanitary installation arrangement is used in practice.

[0004] The invention further relates to the use of a sanitary installation arrangement. Such a use is known.

[0005] The invention further relates to a sanitary fitting. Sanitary fittings are known in the prior art.

[0006] The invention further relates to a method for a fluidic connection of a sanitary functional piece with a hose. Such a method is known in the prior art.

[0007] The state of the art for connecting hoses and fittings, especially fittings, includes crimping and molding. However, crimping results in a disadvantageous mechanical stress on the fitting. Molding, in which the fitting is injection molded, is disadvantageously complex. The connection of rigid components, such as the fitting or the fitting itself, and flexible components, such as hoses, is particularly relevant in sanitary applications. Here, a sufficiently high mechanical strength, fluidic tightness, and compatibility with drinking water are preferably combined. (PC 25 0875 C 2 / 31 2 July 2025)

[0008] The invention is based on the objective of improving the connection properties and operational characteristics of a sanitary installation arrangement. This objective is achieved by the features of the independent claims.

[0009] Advantageous embodiments are described in the dependent claims. It should be noted that the features listed individually in the dependent claims can be combined in any technologically meaningful way and define further embodiments of the invention. Furthermore, the features specified in the claims are further specified and explained in the description, which also presents further preferred embodiments of the invention.

[0010] To solve the stated problem, the invention proposes the features of claim 1. In particular, according to the invention, in a sanitary installation arrangement of the type described above, it is proposed to solve the stated problem by providing a material-fit connection between the first connection part and the hose. Thus, a reliable and permanent connection between the hose and the connection part can be provided.

[0011] Advantageous embodiments of the invention are described below, which can be combined alone or in combination with the features of other embodiments, optionally together with the features according to claim 1.

[0012] In an advantageous embodiment, a second connection part may be provided, wherein the second connection part has a hose receptacle which overlaps with the hose in a connection direction PC 25 0875 C 3 / 31 2 July 2025, wherein there is a materially tight connection between the second connection part and the hose.

[0013] Due to the described design of the sanitary installation arrangement with the second connection part, the advantages described in connection with the first connection part can be applied to a second connection part connected to the hose. In particular, a water-bearing arrangement can be designed in this way that exhibits sufficiently high mechanical strength, fluidic tightness, and compatibility with drinking water.

[0014] The first and second connection parts can be designed as components of the same or different types. Additionally or alternatively, the first and second connection parts can have the same geometry and / or be made of the same material. Furthermore, the material-fit connection between the first connection part and the hose, as well as the material-fit connection between the second connection part and the hose, can be designed in the same way and, in particular, identically. Alternatively, the material-fit connection between the first connection part and the hose, as well as the material-fit connection between the second connection part and the hose, can be designed in different ways and, in particular, differently.

[0015] The connection direction in which the hose receptacle of the second connector overlaps with the hose can be identical or different from the connection direction in which the hose receptacle of the first connector overlaps with the hose. In particular, the respective connection direction can depend on the orientation of a section of the PC 25 0875 C 4 / 31 overlapping with the respective hose receptacle. July 2, 2025

[0016] hose, in particular an end of the hose overlapping with the respective hose receptacle, and / or the orientation of the hose receptacle may be predetermined.

[0017] In an advantageous embodiment, the hose can be inserted into the hose receptacle of the first connection part and / or into the hose receptacle of the second connection part. This results in a mechanically stable arrangement.

[0018] Alternatively, the first and / or second connection part may be inserted into the hose. Whether the connection part(s) is / are inserted into the hose, or vice versa, depends on the operating conditions, in particular operating pressure, temperature, and flow rate.

[0019] In an advantageous embodiment, the first connection part and / or the second connection part may be configured to receive a sanitary functional component. Preferably, the sanitary functional component is an aerator. Alternatively, the sanitary functional component may also be a flow regulator. This further improves the functionality of the sanitary installation.

[0020] In an advantageous embodiment, the first connection part and / or the second connection part may be designed as a fitting. Preferably, the fitting is designed as a push-fit and / or screw fitting. This improves the connection quality.

[0021] Fittings are defined here as connecting pieces for pipelines in supply and assembly technology, which PC 25 0875 C 5 / 31 2 July 2025 are mainly used to create pipeline connections.

[0022] In an advantageous embodiment, the material-fit connection between the hose and the first connector and / or the material-fit connection between the hose and the second connector can be created by welding. In other words, the material-fit connection can be a welded joint. Preferably, the material-fit connection is created by laser welding, ultrasonic welding, or thermal welding. This allows for a permanently strong and inseparable connection. This is particularly advantageous at high flow rates.

[0023] In an advantageous embodiment, the hose can be designed to create a direct or indirect connection between a valve cartridge and the first connection part and / or the second connection part. This improves the functionality of the hose. "Direct" here refers to a situation in which no other sanitary elements besides the hose are formed between the respective connection part and the valve cartridge. "Indirect" here refers to a situation in which other sanitary elements, such as aerators or flow regulators, are formed between the respective connection part and the valve cartridge, in addition to the hose.

[0024] In an advantageous embodiment, the hose and the first connecting part and / or the hose and the second connecting part may be made from a base material of the same type of plastic. Preferably, the hose and the first connecting part and / or the hose and the second connecting part are made from the same base material PC 25 0875 C 6 / 31 2 July 2025. This improves the connection between these respective connected parts. The same type of plastic can be, for example, polyolefins or polyketones. Using the same type of plastic has a beneficial effect on the formation of a material-fit connection by welding, especially laser welding. The material-fit connection can thus be of higher quality.

[0025] In an advantageous embodiment, the base material of the hose and the first and / or second connection part may be polyethylene, polypropylene, polyamide, and additionally or alternatively polyketone or a mixture thereof. The mixture of the hose and the mixture of the first and / or second connection part may be identical or different. Experiments with the aforementioned materials have proven particularly advantageous, especially with regard to weldability. The plastics to be welded are preferably thermoplastic plastics.

[0026] In an advantageous embodiment, the first and / or second connection part may be provided with an additive. This improves the material quality of the first and / or second connection part. If the first and / or second connection part has a base material, the additive may, for example, be mixed into the base material. In particular, the base material may be a matrix, and the additive may be dispersed within the matrix. The additive may, for example, be carbon black or a flame retardant.

[0027] In an advantageous embodiment, it may be provided, PC 25 0875 C 7 / 31 2 July 2025, that the admixture includes at least a reinforcing additive. Preferably, the reinforcing additive is a fibrous material, for example, glass fiber or aramid fiber. Additives used in plastics are typically plasticizers (e.g., diethylhexyl phthalate), stabilizers, colorants, or fillers.

[0028] In an advantageous embodiment, the amplifying additive can be optically transparent. This prevents it from being attacked by a laser beam, allowing the laser beam to pass through and be absorbed by the tube.

[0029] In an advantageous embodiment, the base material can be optically transparent. This allows the laser beam to pass through and be focused precisely on a point between the first connection part and the hose and / or between the second connection part and the hose.

[0030] In an advantageous embodiment, a preferably circumferential and additionally or alternatively circumferentially oriented welded joint, in particular a weld seam, furthermore particularly a laser weld seam, can be formed between the hose and the first connection part and / or between the hose and the second connection part. This allows a material-fit connection between the hose and the first connection part and / or between the hose and the second connection part to be achieved. The welded joint, in particular a weld seam, furthermore particularly a laser weld seam, can be formed circumferentially or only partially circumferentially, in particular at specific points. Alternatively, the welded joint, in particular a weld seam, furthermore particularly a laser weld seam, can be intermittent. PC 25 0875 C 8 / 31 2 July 2025

[0031] In an advantageous embodiment, the first and / or second connection part can be transparent in a spectral range where the hose is absorbent. This ensures that a laser beam can penetrate the first and / or second connection part without causing heating or melting of the material. Melting of the material only occurs at the hose itself or at the interface between the hose and the first connection part and / or at the interface between the hose and the second connection part. This allows for laser welding from the outside through the respective connection part.

[0032] In an advantageous embodiment, the hose can be arranged in an interference fit in the first connection part and / or in an interference fit in the second connection part. This allows for a good weld joint, particularly a laser weld, and even a certain degree of sealing without a weld, for example, without a laser weld. In mechanical engineering, an interference fit is also referred to as an interference fit. In an interference fit, the maximum dimension of a bore is always smaller than the minimum dimension of the shaft. Therefore, energy must be expended to clamp and move the shaft into the bore.

[0033] An interference fit is a type of fit where the parts to be joined have an interference fit. This means that the outer diameter of one part (usually a shaft) is slightly larger than the other.

[0034] Inner diameter of the other part (usually a bore).

[0035] This interference fit creates a tight, play-free PC 25 0875 C 9 / 31 2 July 2025

[0036] A connection achieved by pressing the larger part into the smaller one.

[0037] In an advantageous embodiment, the weld, particularly the laser weld, can extend over an axial area larger than the line width of a single weld, especially the laser weld itself. This allows for a high-quality connection. For example, the weld, particularly the laser weld, can be designed as a zigzag weld and / or several parallel welds, particularly laser welds, can be formed. Several parallel welds, particularly laser welds, are advantageous when a higher quality connection is required or in cases where the base materials of the connector and the hose are different and a single weld, particularly a laser weld, is insufficient for the connection.

[0038] In an advantageous embodiment, the first connection part and / or the second connection part may have greater stiffness and, additionally or alternatively, greater hardness than the hose. Thus, the respective connection part can perform a fastening function on a fitting or frame.

[0039] Stiffness, as used here, refers to the resistance of a body to elastic deformation caused by an external load (a force or torque) and to its subsequent deformation. Stiffness is a broader term encompassing tensile stiffness, shear stiffness, bending stiffness, and torsional stiffness. Hardness refers to the mechanical resistance a material offers to the mechanical penetration of another body. PC 25 0875 C 10 / 31 2 July 2025

[0040] In an advantageous embodiment, the first and / or second connection part may be transparent or translucent in a visible spectral range. This allows for visual inspection of the material-fit connection between the first connection part and the hose, and / or the material-fit connection between the second connection part and the hose, from the outside and through the respective connection part. Translucency refers to the partial transmission of light through a body. Transparency refers to the complete transmission of light through a body. The visible spectral range is defined as the range of light with wavelengths between 380 nanometers and 780 nanometers.

[0041] In an advantageous embodiment, the sanitary installation arrangement can be designed for installation in a sanitary fitting. Preferably, the sanitary installation arrangement is designed for installation in a spout pipe. This allows for improved functionality of the sanitary installation arrangement.

[0042] To solve the aforementioned problem, the invention provides the features of the dependent claim, which relates to the use of a sanitary installation arrangement. In particular, to solve the aforementioned problem, the invention proposes, when using the type described above, that the sanitary installation arrangement be designed with one of the features mentioned above, especially as described, and that the sanitary installation arrangement be used in a sanitary fitting. Preferably, the hose is arranged in an outlet pipe of the sanitary fitting. Thus, the full functionality of the sanitary installation arrangement can be achieved. PC 25 0875 C 11 / 31 2 July 2025

[0043] To solve the aforementioned problem, the invention provides the features of the dependent claim relating to a sanitary fitting. In particular, to solve the aforementioned problem, the invention proposes that a sanitary fitting of the type described above has a sanitary installation arrangement according to one of the features mentioned above, in particular a sanitary installation arrangement of the type described. This allows the functionality and operating characteristics of a sanitary fitting to be improved.

[0044] To solve the aforementioned problem, the invention provides the features of the dependent claim, which relates to a method for a fluidic connection of a sanitary functional component, in particular an aerator, to a hose. In particular, to solve the aforementioned problem, the invention proposes, in a method of the type described above, that the sanitary functional component is fluidically connected to a first connection part and the hose is plugged into the first connection part, wherein the hose and the first connection part are configured according to a sanitary installation arrangement according to one of the features mentioned above, and wherein the hose and the first connection part are mechanically connected. Thus, a sanitary functional component can be connected and the functionality of the device can be further improved.

[0045] In an advantageous embodiment, the hose can be plugged into a second connection part, the second connection part being designed according to a sanitary installation arrangement in accordance with one of the features mentioned above, and the hose and the second connection part being butt-fitted. This allows the functionality of the device to be further improved. PC 25 0875 C 12 / 31 2 July 2025

[0046] In an advantageous embodiment, the hose and the first connection part and / or the hose and the second connection part can be joined by welding. Preferably, the welding is laser welding, ultrasonic welding, or thermal welding. This creates a permanently stable and secure connection between the hose and the respective connection part.

[0047] In an advantageous embodiment, the first connection part and / or the second connection part can be designed to be at least partially transparent to laser light, for example, from the aforementioned laser welding process. In particular, the laser light can be guided through the at least partially transparent first connection part and / or the at least partially transparent second connection part to introduce energy into the hose connected to the first connection part and / or the second connection part. Thus, the laser light can penetrate the first connection part and / or the second connection part and create a weld, in particular a laser weld seam, at a precisely desired location.

[0048] In an advantageous embodiment, a reinforcing additive can be added to the first and / or second connection part. Preferably, the reinforcing additive is a fiber material, for example, glass fiber or aramid fiber. This allows the hardness and strength of each connection part to be precisely adjusted. Aramid fibers consist of polyamides in which the amide groups are bonded to aromatic groups. PC 25 0875 C 13 / 31 2 July 2025

[0049] In an advantageous embodiment, it can be provided that the beam cross-section of a laser light, for example the one already mentioned, is selected to be larger than the dimensions of a particle of the reinforcing additive. This prevents the laser light from interacting with the reinforcing additive, in particular from melting it. This would be detrimental to the hardness and strength of the first and / or second connection part and would also lead to lower weld quality.

[0050] Therefore, it is advantageous if the size of the particle of the amplifying additive is smaller than the beam cross-section of the laser light.

[0051] In an advantageous embodiment, the hose can be rotated with the first connection part and / or the second connection part during laser welding. Preferably, the hose is rotated with the first connection part and / or the second connection part about a longitudinal axis of the hose. This allows a high-quality laser weld seam to be produced.

[0052] In an advantageous embodiment, a laser head can be rotated around the hose with the first connection part and / or the second connection part. The laser head is the part of the laser from which the laser beam exits. This allows for the use of an alternative manufacturing technique.

[0053] Preferably, the hose and at least the connecting part to be attached to it are rotated, while the laser position remains fixed. This ensures the best (laser) welding quality.

[0054] In an advantageous embodiment, it can be provided, PC 25 0875 C 14 / 31 2 July 2025, that the hose is press-fitted to the first connection part and / or to the second connection part before the material-tight connection is established. This ensures a good and reliable seal. Preferably, the material-tight connection is made by laser welding. Other welding techniques that can be used include ultrasonic welding and / or thermal welding.

[0055] The invention will now be described in more detail with reference to a few exemplary embodiments, but is not limited to these few exemplary embodiments. Further variants of the invention and 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 embodiments and / or the previously described variants of devices, uses and methods according to the invention.

[0056] It shows:

[0057] Fig. 1 shows a sanitary installation arrangement according to the invention with two welds in a perspective view and

[0058] Fig. 2 shows the sanitary installation arrangement from Fig. 1 in a further perspective view and

[0059] Fig. 3 shows the sanitary installation arrangement from Fig. 1 in a further perspective view and

[0060] Fig. 4 shows a sanitary installation arrangement according to the invention with a weld seam in a perspective view and

[0061] Fig. 5 shows the sanitary installation arrangement from Fig. 4 in a further perspective view and

[0062] Fig. 6 shows the sanitary installation arrangement from Fig. 4 in a further perspective view and PC 25 0875 C 15 / 31 2 July 2025

[0063] Fig. 7 shows a sanitary installation arrangement according to the invention with a weld seam in a perspective view and

[0064] Fig. 8 shows the sanitary installation arrangement from Fig. 7 in a further perspective view and

[0065] Fig. 9 shows the sanitary installation arrangement from Fig. 7 in a further perspective view and

[0066] Fig. 10 shows a sanitary installation arrangement according to the invention with two weld seams in a perspective view and

[0067] Fig. 11 shows the sanitary installation arrangement from Fig. 10 in a further perspective view and

[0068] Fig. 12 shows the sanitary installation arrangement from Fig. 10 in a further perspective view and

[0069] Fig. 13 shows a sanitary installation arrangement according to the invention with two connection parts in a schematic side view.

[0070] In the following description of various embodiments of the invention, elements that are identical in function are given identical reference numbers even if their design or shape differs.

[0071] For clarity, not all reference numbers are shown in the figures, even though the elements may well be present in the figures. However, identical reference numbers denote functionally and / or structurally identical components and functional units.

[0072] Figures 1 to 3 show a sanitary installation according to the invention.

[0073] Installation arrangement 1 with two welds 8 in different perspective views.

[0074] The sanitary installation assembly 1 comprises a connection part 2 and a hose 3. The connection part 2 has a PC 25 0875 C 16 / 31 2 . July 2025

[0075] Hose receptacle 4, which overlaps with hose 3 in one connection direction. There is a material-fit connection 5 between the connector 2 and hose 3.

[0076] It is also possible that the hose 3 is connected to a further connection part not shown in Figures 1 to 12. For example, a second end of the hose 3 can be connected to a further connection part. If the hose 3 is connected to a further connection part, the connection part 2 shown in Figures 1 to 12 can be a first connection part 2. The second connection part can also be configured in the manner shown in Figures 1 to 12 and / or connected to the hose 3 in the same way. In other words, the teaching of Figures 1 to 12 and the related description can be applied to the first connection part 2 and the second connection part. In particular, the first connection part 2 and the second connection part can be configured in the same way and / or connected to the hose 3 in the same way.

[0077] In the exemplary embodiments shown in Figures 1 to 3, the connecting part 2 is inserted into the hose 3. The connecting part 2 is designed to receive a sanitary functional component (not shown here), for example, an aerator.

[0078] The connecting part 2 in Figures 1 to 3 is designed as a fitting 6. The fitting 6 is designed as a push-fit fitting.

[0079] In sanitary installation arrangement 1, the material-fit connection is created by welding, specifically by laser welding. Accordingly, the material-fit connection 5 is a welded connection, PC 25 0875 C 17 / 31 2 July 2025, in particular a laser welded connection. Alternatively, the material-fit connection 5 can be created by ultrasonic welding or thermal welding.

[0080] The sanitary installation arrangement 1 in Figures 1 to 3 has two circumferential welds 8, which in the specific examples are designed as laser welds 7. The welds 8 can be partially circumferential or fully circumferential.

[0081] The hose 3 can directly or indirectly create a connection between a valve cartridge (not shown here) and the connection part 2.

[0082] Hose 3 and connector 2 are made from a base material of the same type of plastic. In a preferred embodiment, hose 3 and connector 2 are made from the same base material.

[0083] The base material of hose 3 and connection part 2 consists of polyethylene, polypropylene, polyamide and additionally or alternatively polyketone or a mixture thereof.

[0084] The connecting part 2 is provided with an additive, wherein the additive at least partially comprises a reinforcing additive. The reinforcing additive is preferably a fiber material, for example glass fiber or aramid fiber.

[0085] The amplifying additive is optically transparent so that it does not interact with a laser beam. The base material is also optically transparent. Tube 3 is transparent in a spectral range in which the connecting part 2 is absorbing.

[0086] The connecting part 2 has a greater stiffness and PC 25 0875 C 18 / 31 2. July 2025 additionally or alternatively a greater hardness than the hose.

[0087] 3 on. This is advantageous overall for mechanical stability.

[0088] Hose 3 is transparent in a visible spectral range. Alternatively, hose 3 can be translucent in a visible spectral range.

[0089] The material-bonded connection 5 is preferably produced by laser welding. Preferably, the hose 3 with the connecting part 2 is rotated about a longitudinal axis of the hose 3 during laser welding, while the laser itself is static. Alternatively, it is also conceivable that the laser or a laser head is rotated about the hose 3 with the connecting part 2.

[0090] Figures 4 to 6 show a sanitary installation arrangement 1 according to the invention with a weld seam 8 in different perspective views. The sanitary installation arrangement 1 has the same features as the sanitary installation arrangement 1 described in Figures 1 to 3. A repetition of the features is omitted here. The only difference between Figures 1 to 3 and Figures 4 to 6 is that the sanitary installation arrangement 1 has two weld seams 8 and Figure 4 to 6 has one weld seam 8, respectively.

[0091] Figures 7 to 9 show a sanitary installation arrangement 1 according to the invention with a weld seam 8 in different perspective views.

[0092] The sanitary installation assembly 1 comprises a connection part 2 and a hose 3, the connection part 2 having a hose receptacle 4. The hose receptacle 4 overlaps the hose 3 in one connection direction. There is a material-fit connection 5 between the connection part 2 and the hose 3 (PC 25 0875 C 19 / 31 2 July 2025).

[0093] In the specific examples, hose 3 is inserted into hose receptacle 4.

[0094] The connecting part 2 is designed to receive a sanitary functional component (not shown here). Preferably, the sanitary functional component is an aerator.

[0095] The connection part 2 is designed as a fitting 6, namely as a push-fit fitting.

[0096] The material-bonded connection 5 is produced by welding, preferably laser welding. Accordingly, the material-bonded connection 5 is a welded joint, in particular a laser welded joint. Alternative welding methods with which the material-bonded connection 5 can be produced are ultrasonic welding or thermal welding.

[0097] The hose 3 can directly or indirectly create a connection between a valve cartridge (not shown here) and the connection part 2.

[0098] Hose 3 and connector 2 are made from a base material of the same type of plastic. Preferably, hose 3 and connector 2 are made from the same base material.

[0099] The base material of hose 3 and connection part 2 consists of polyethylene, polypropylene, polyamide and additionally or alternatively polyketone or a mixture thereof.

[0100] The connector part 2 contains an additive. PC 25 0875 C 20 / 31 2. July 2025

[0101] The admixture includes at least a reinforcing additive, preferably a fiber material. The fiber material included can be, for example, glass fiber or aramid fiber.

[0102] The reinforcing additive is designed to be optically transparent so that it does not interact with a laser beam used for laser welding.

[0103] The base material is optically transparent.

[0104] A circumferential laser weld 7 is formed between the hose 3 and the connection part 2. Alternatively, the laser weld 7 can be oriented circumferentially and not be circumferential. Alternatively, the laser weld 7 can be intermittent.

[0105] The connector 2 is transparent in a spectral range in which the hose 3 is absorbent. These characteristics are important for laser welding, in which the laser beam first penetrates the connector 2 and only then the hose 3.

[0106] The hose 3 can be arranged in a press fit in the connection part 2.

[0107] The connecting part 2 has a greater stiffness and additionally or alternatively a greater hardness than the hose 3.

[0108] The connection part 2 is transparent in a visible spectral range. Alternatively, the connection part 2 can be translucent in a visible spectral range.

[0109] The sanitary installation arrangement 1 is for installation in a PC 25 0875 C 21 / 31 2 . July 2025

[0110] Sanitary fitting (not shown here), for example, a spout pipe.

[0111] The hose 3 and the connecting part 2 are joined together by welding, preferably laser welding or ultrasonic welding or thermal welding.

[0112] Preferably, the hose 3 with the connecting part 2 is rotated around a longitudinal axis of the hose 3 during laser welding. Alternatively, a laser head of a laser can be rotated around the hose 3 with the connecting part 2.

[0113] Figures 10 to 12 show an installation arrangement 1 according to the invention with two welds 8 in different perspective views. The sanitary installation arrangement 1 of Figures 10 to 12 has the same features as the sanitary installation arrangement 1 of Figures 7 to 9; only the number of welds 8 differs. For the sake of brevity, a duplication of the feature description is omitted here.

[0114] Figure 13 shows a sanitary installation arrangement according to the invention with two connection parts in a schematic side view. The installation arrangement comprises a first connection part 2 and a second connection part 9. These two connection parts 2, 9 can each be designed according to one of the exemplary embodiments shown in Figures 1 to 12 and described here and connected to the hose 3.

[0115] In particular, the first connecting part 2 is connected to a first end of the hose 3 and the second connecting part 9 is connected to a second end of the hose 3.

[0116] The first connection part 2 and the second are shown here.

[0117] Connection part 9 is designed in the same way and connected to the PC 25 0875 C 22 / 31 2. July 2025

[0118] Hose 3 is connected. The material-fit connection is created by inserting hose 3 into the hose receptacle 4 of the first connector 2 and the second connector 9, followed by laser welding. This design is described, for example, in connection with the embodiments of the sanitary installation shown in Figures 7 to 12. Reference is explicitly made to this description again here.

[0119] Due to the transparent connection parts 2, 9 in a spectral range in which the hose 3 is designed to absorb light, a laser beam 10, indicated in Fig. 13, can penetrate the first connection part 2 and the second connection part 9 without heating them, and in particular without melting them. However, the energy of the laser beams 10 is converted into heat when the laser beams 10 strike the hose 3. The laser beams 10 thus heat the hose 3 in the area of ​​the incident laser beam 10, as well as the adjacent area of ​​the first connection part 2 and the second connection part 9.As a result, at least the hose 3, and preferably also the first connector 2 and / or the second connector 9 to be attached to it, are melted, with the hose 3 and the first connector 2 as well as the hose 3 and the second connector 9 forming a material-fit connection 5. The circumferential connection 5 is formed by a relative rotational movement of a laser head emitting the laser beams 10 and the hose 3 with the first connector 2 and with the second connector 9 relative to each other about a longitudinal axis of the hose 3 during laser welding (3). This connection 5 is a laser weld seam 7.

[0120] A sanitary installation arrangement 1 comprising at least a first connection part 2 and a hose 3 PC 25 0875 C 23 / 31 2 July 2025 is proposed, wherein the first connection part 2 has a hose receptacle 4 which overlaps with the hose 3 in a connection direction, and wherein there is a materially bonded connection 5 between the first connection part 2 and the hose 3.

[0121] PC 25 0875 C 24 / 31 2 . July 2025

[0122] Reference symbol list

[0123] 1 sanitary installation arrangement

[0124] 2 Connection part, first connection part 3 Hose

[0125] 4 hose holder

[0126] 5 material f conclusive connection

[0127] 6 Fitting

[0128] 7 Laser weld 8 Weld , welds

[0129] 9 second connection part

[0130] 10 laser beams

Claims

PC 25 0875 C 25 / 31 July 2, 2025 Claims 1. Sanitary installation arrangement (1) comprising at least a first connection part (2) and a hose (3) wherein the first connection part (2) has a hose receptacle (4) which overlaps with the hose (3) in a connection direction, characterized in that a materially bonded connection (5) exists between the first connection part (2) and the hose (3).

2. Sanitary installation arrangement (1) according to claim 1, characterized in that a second connection part (@@) is formed, wherein the second connection part (@@) has a hose receptacle (@@) which overlaps with the hose (3) in a connection direction, wherein a materially interlocking connection (@@) exists between the second connection part (@@) and the hose (3).

3. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the hose (3) is inserted into the hose receptacle (4) of the first connection part (2) and / or into the hose receptacle (@@) of the second connection part (@@).

4. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) is / are designed to receive a sanitary functional part, in particular an aerator.

5. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) , is / are designed as a fitting (6) , in particular a push-fit and / or screw fitting. PC 25 0875 C 26 / 31 July 2, 2025 6. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the materially bonded connection (5) between the hose (3) and the first connection part (2) and / or the materially bonded connection (@@) between the hose (3) and the second connection part (@@) is / are created by welding, in particular laser welding or ultrasonic welding or thermal welding.

7. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the hose (3) directly or indirectly creates a connection between a valve cartridge and the first connection part (2) and / or the second connection part (@@).

8. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the hose (3) and the first connection part (2) and / or the hose (3) and the second connection part (@@) are made of a base material of the same type of plastic, in particular the same base material.

9. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the base material of the hose (3) and of the first connection part (2) and / or of the second connection part (@@) comprises polyethylene, polypropylene, polyamide and / or polyketone or a mixture thereof.

10. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) is / are provided with an additive. PC 25 0875 C 27 / 31 2 . July 2025 11. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the admixture at least partially comprises a reinforcing additive, preferably a fibrous material, in particular glass fiber or aramid fiber.

12. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the reinforcing additive is optically transparent.

13. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the base material is optically transparent.

14. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that a preferably circumferential and / or in circumferentially oriented weld joint, in particular laser weld (7) , is formed.

15. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) is / are transparent in a spectral range in which the hose (3) is designed to be absorbent.

16. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the hose (3) is arranged in a press fit in the first connection part (2) and / or in a press fit in the second connection part (@@).

17. Sanitary installation arrangement (1) according to one of the preceding PC 25 0875 C 28 / 31 July 2, 2025 Claims characterized in that the first connecting part (2) and / or the second connecting part (@@) has / have a greater stiffness and / or greater hardness than the hose (3).

18. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) is / are transparent or translucent in a visible spectral range.

19. Sanitary installation arrangement (1) according to one of the preceding claims, characterized in that it is designed for installation in a sanitary fitting, in particular a spout pipe.

20. Use of a sanitary installation arrangement (1) according to one of claims 1 to 19 in a sanitary fitting, in particular wherein the hose (3) is arranged in an outlet pipe of the sanitary fitting.

21. Sanitary fitting with a sanitary installation arrangement (1) according to one of claims 1 to 19.

22. Method for a fluidic connection of a sanitary functional piece, in particular an aerator, with a hose (3) , wherein the sanitary functional piece is fluidically connected to a first connection part (2) and the hose (3) is plugged into the first connection part (2), wherein the hose (3) and the first connection part (2) are designed according to a sanitary installation arrangement (1) according to claims 1 to 19, characterized in that the hose (3) and the first connection part (2) are materially connected. PC 25 0875 C 29 / 31 July 2, 2025 23. Method according to claim 22, characterized in that the hose (3) is plugged into a second connection part (@@), wherein the second connection part (@@) is designed according to a sanitary installation arrangement (1) according to claims 2 to 19, wherein the hose (3) and the second connection part (@@) are connected in a way that ensures a secure connection.

24. Method according to one of claims 22 or 23, characterized in that the hose (3) and the first connecting part (2) and / or the hose (3) and the second connecting part (3) are joined together by welding, in particular laser welding, ultrasonic welding or thermal welding.

25. Method according to one of the preceding claims, characterized in that the first connection part (2) and / or the second connection part (@@) is / are designed to be at least partially transparent to a laser light of or of a laser welding process, in particular wherein the laser light is guided through the at least partially transparent first connection part (3) and / or second connection part (@@) in order to introduce energy into the hose (3) pluggably connected to the first connection part (2) and / or second connection part.

26. Method according to one of the preceding claims, characterized in that a reinforcing additive, preferably a fibrous material, in particular glass fiber or aramid fiber, is added to the first connecting part (2) and / or the second connecting part (@@).

27. Method according to one of the preceding claims, characterized in that a beam cross-section of one or the laser light is selected which is larger than a PC 25 0875 C 30 / 31 July 2, 2025 Expansion of a particle of the reinforcing additive is.

28. Method according to one of the preceding claims, characterized in that the hose (3) is connected to the first connection part (2) and / or to the second connection part (@@) is rotated during laser welding, preferably around a longitudinal axis of the hose (3).

29. Method according to one of the preceding claims, characterized in that a laser head is rotated around the hose (3) with the first connection part (2) and / or with the second connection part (@@).

30. Method according to one of the preceding claims, characterized in that the hose (3) is press-fitted to the first connecting part (2) and / or to the second connecting part (@@) before the materially bonded connection (5) is made, in particular by laser welding.

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