Hose assembly and type series thereof

Abstract

In a hose assembly (1) according to the invention having an inner hose (2) and an outer braiding (3) that receives the inner hose (2), with an outer braiding (3) being formed from at least two strands (4, 8), it is proposed that at least one strand (4) of the at least two strands (4, 8) has a stiffening element (7) that increases a kink resistance.

Description

[0001] PC 240757 C July 4, 2024 Hose arrangement and series thereof The invention relates to a hose arrangement with an inner hose and an outer braid, wherein an outer braid is formed from at least two strands. The invention further relates to the use of a stiffening element in an outer braid to increase the kink resistance and pressure resistance of a hose arrangement. The invention further relates to a series, in particular for a hose arrangement, with at least two variants, wherein the variants have a matching inner hose and a different outer braid. Such outer braids are known and are frequently formed by the strands being made from similar threads and are usually used in the field of drinking water approval, in particular for pull-out hoses for sanitary fittings, for connection hoses for sanitary fittings and for shower hoses.The invention is based on the object of improving the performance properties of the hose arrangement. To achieve this object, the features of claim 1 are provided according to the invention. In particular, to achieve this object, in a hose arrangement of the type described at the outset, it is proposed according to the invention that at least one strand of the at least two strands has a stiffening element which, among other things, increases the buckling stiffness and / or pressure resistance. For example, the stiffening elements can be designed in the form of supporting monofilaments. In this way, external stresses such as tension or compression, shear, bending and torsion acting on the hose arrangement can be compensated for, thereby increasing the stability of the hose arrangement.This improves the performance characteristics of the hose assembly, particularly with regard to kink resistance and / or pressure resistance. In an advantageous embodiment, the outer braid can comprise a self-supporting braid. For example, the outer braid can have a helical structure or coil. This avoids the need to design the inner hose as a corrugated hose or spiral hose, which has a positive effect on the flow rate, even in the curved state, as well as on noise generation.In an advantageous embodiment, it can be provided that the stiffening element winds in a curve with a preferably constant gradient around the casing of the inner tube and / or that the stiffening element only crosses monofilaments, threads and / or strands with low kink resistance, so that the combination of rotation and translation creates a helix along the axis of rotation and the stiffening element defines a radial outer dimension. The stiffening element thus forms a support structure for the inner tube. By not crossing the stiffening elements, it can be prevented that the tube arrangement becomes too stiff. In an advantageous embodiment, it can be provided that at least one strand comprises at least one thread, which is designed in particular as the stiffening element. Thus, the design of the thread can make the strand PC 240757 C 3 / 17 4.July 2024 according to individual needs or applications, thereby increasing the performance properties and the variability in the characteristics of the strands. In an advantageous embodiment, it can be provided that at least one thread is braided from at least one monofilament. This makes it possible to produce a compact structure within the outer braid. For example, it can be provided that a thread or strand is designed as a stiffening element in order to increase the stiffness of the outer braid and thus prevent kinking of the hose arrangement. In an advantageous embodiment, it can be provided that at least one thread is designed as an individual monofilament and / or is composed of individual monofilaments.For example, the thread is designed according to the desired geometric size, in particular the desired cross-sectional area or height, in order to achieve an application-specific geometry. It has been found that the width is generally selected to be the same in order to ensure that the individual strands can be braided together seamlessly and without offset. In an advantageous embodiment, it can be provided that at least one thread differs in its material selection from the material selection of at least one thread from another strand and / or that the stiffening element differs in its material selection from a thread and / or from a monofilament of its strand and / or from another strand. Thus, the material selection or the geometry can be defined according to the application. For example, PC 240757 C 4 / 17 4.July 2024, it can be provided that the thread is made from a filament structure made of metal, a metallic alloy and / or plastics. It has proven particularly advantageous if the plastic is a thermoplastic. In an advantageous embodiment, it can be provided that at least one strand and / or at least one thread is made from different plastic materials and / or from a combination of plastics and metal and / or from different materials. This makes it easy to design outer braids that differ in their color, area, shape and texture and can thus be adapted to the respective individual requirements. In an advantageous embodiment, it can be provided that the cross-section of the stiffening element differs in a geometric size and / or geometric design from a cross-section of at least one thread from another strand.This allows for different implementation and design options. For example, the cross-section of a geometric quantity can be described as a shape, dimension, symmetry, or area. The shape of the cross-section can be described as a circle, rectangle, square, triangle, ellipse, or other geometric shape. The cross-section is defined by a boundary contour. The boundary contour provides information about its shape, symmetry, and the arrangement of the corners or curves. The boundary contour can have different shapes and features. For example, the boundary contour can be a smooth, curved line without corners or edges. In a further embodiment, the boundary contour consists of lines that meet at the corners to form a closed contour. In an advantageous embodiment, it can be provided that the geometric quantity is an area.The surface area of ​​a geometric quantity refers to the measurable extent of the area occupied by this geometric quantity. For example, it can be provided that the geometric quantity is the surface area of ​​a rectangle, a circle, a polygon, or a polygon. In an advantageous embodiment, it can be provided that the geometric quantity has a maximum extent, preferably transverse to a direction of extension of the stiffening element. The maximum extent refers to the greatest possible distance or dimension that can be covered by the geometric shape. For example, in the case of a rectangle, the maximum extent corresponds to the length or the width, depending on the direction in which the rectangle is extended. In an advantageous embodiment, it can be provided that the geometric quantity has a number of corners.The number of corners indicates how many points the boundary of an object has as a geometric quantity. For example, the geometric quantity can describe three, four, six, or eight corners. In an advantageous embodiment, the geometric quantity can be a number of sign changes of a curvature of a circumferential contour of the cross-section. This allows shapes to be used that increase the strength properties of the stiffening element. For example, the circumferential contour can have several circumferential sections that form differing curvatures. For example, the number of sign changes can be two, four, six, or a multiple thereof.In an advantageous embodiment, it can be provided that at least one strand and / or thread deviates from at least one strand and / or at least one thread in its cross-sectional area upwards by a factor greater than 1.5 to 2 or more than 2, for example 4 but at least greater than 10%. Due to the different design of the cross-sectional areas, one strand and / or thread thus serves as a support element for the other strand and / or thread. In an advantageous embodiment, it can be provided that at least one strand and / or thread deviates from at least one strand and / or thread in its height upwards by a factor greater than 1.5 to 2, or more than 2, for example 4 but at least 10%. Due to the different design of the height, one strand and / or thread thus serves as a support element for the other strand and / or thread.In an advantageous embodiment, it can be provided that at least one strand and / or thread is greater in height than at least one other strand and / or thread. This creates a structure of normal strands and threads and of particularly accentuated strands and / or threads, so that the stiffening element determines a maximum radial outer dimension. The stiffening element can thus serve as a support structure for an additional outer braid. In a preferred embodiment, it can be provided that the stiffening element determines a maximum radial outer dimension, in particular wherein this outer dimension results from the radial extension of the stiffening element and a layer of other strands, threads, or monofilaments. Thus, a larger cross-section of the stiffening element can be achieved while maintaining the same internal dimensions. PC 240757 C 7 / 17 4.July 2024 In an advantageous embodiment, it can be provided that the inner tube is smooth on the inside and / or outside. Thus, in contrast to corrugated hoses, no so-called dead zones can form on the inside, in which deposits can form and are therefore hygienically questionable. In an advantageous embodiment, it can be provided that at least one outer braid of the inner tube is provided with at least one further outer braid. This can provide protection against mechanical damage caused by particularly prominent filaments, for example when the thread is particularly thick. Alternatively or additionally, the features of the independent claim directed to a use are provided according to the invention to achieve the stated object.In particular, to achieve the stated object, the invention proposes the use of a stiffening element in an outer braid to increase the kink resistance and / or pressure resistance of a hose arrangement, in particular in the sanitary sector, wherein the hose arrangement (1) can be approved for drinking water. This avoids the need for the inner hose to be designed as a corrugated hose or a spiral hose. This in turn has great advantages in terms of flow, in particular for flow in a curved state, and in terms of noise development. Alternatively or additionally, the features of the independent claim directed to a series are provided according to the invention to achieve the stated object. In particular, to achieve the stated object in a series, in particular for a hose arrangement, in particular of the type described above, the following is proposed: PC 240757 C 8 / 17 4.July 2024 that at least two variants, each designed according to one of the preceding claims, wherein the variants have a matching inner tube and a different outer braid, in particular wherein at least one outer braid is made of different materials and / or different filament numbers and / or different braiding angles. In an advantageous embodiment, it can be provided that in at least one of the variants an outer braid is designed without a stiffening element. The invention will now be described in more detail with reference to exemplary embodiments. It should be noted, however, that the invention is not limited to the exemplary embodiments. Further exemplary embodiments result from the combination of the features of one or more claims with one another and / or with one or more features of the exemplary embodiments. It shows: Fig.1 shows a hose arrangement according to the invention in a basic representation, Fig. 2 shows the hose arrangement in a further view Fig. 3 shows the hose arrangement in a third view Fig. 4 shows the hose arrangement in a fourth view Fig. 5 shows a cross-section through the hose arrangement Fig. 1 shows a hose arrangement 1 according to the invention, designated as a whole by 1, in a simple basic representation in a plan view. PC 240757 C 9 / 17 July 4, 2024 Figs. 2 to 4 show further views of the hose arrangement 1 shown in Fig. 1. The hose arrangement 1 has an inner hose 2 and an outer braid 3 which surrounds the inner hose 2. The support structure of the outer braid 3 makes it possible to design the inner hose 2 of the hose arrangement 1 to be smooth on the inside as well as the outside.In a further embodiment of the hose arrangement 1 according to the invention (not shown), the outer braid 3 of the inner hose 2 can be provided with a further outer braid 3 as an additional reinforcement layer or as a protective structure. The outer braid 3 is braided from several strands 4, 8. Depending on the hose arrangement 1, the strands 4, 8 can run parallel or crossed to one another. The strands 4, 8 are each composed of different threads 5, which in turn are composed of individual monofilaments 6. In Fig. 1 to Fig. 5 it can be seen that one of the strands 4 has a stiffening element 7. By means of this stiffening element 7, the kink resistance of the hose arrangement 1 is increased, so that the outer braid 3 serves as a self-supporting braid.The stiffening element 7 is integrated as a thread 5 in the hose arrangement 1 and differs in its geometric size from the other threads 5 of the outer braid 3. In embodiments of the hose arrangement 1 not shown in detail, the geometric size or the geometric configuration can be defined, for example, as the surface area, maximum extent, number of corners of the end pieces, or as the number of changes in the sign of a curvature of a circumferential contour of the cross-section. The different geometric size ratios between the stiffening element 7 and the other threads 5 of the outer braid 3 ensure that the stiffening element 7 winds around the casing of the inner hose 2 in a curve with a constant gradient. The stiffening element 7 of Figs. 1 to 5 differs, for example, in its material selection from the other threads 5 of the outer braid 3.For example, the thread 5 can consist of different plastic materials, of a combination of plastics and metal, or of other conceivable materials. Fig. 5 shows a cross-sectional view of the outer braid 3 of a hose arrangement 1 according to the invention. The stiffening element 7 is integrated as a thread 5 in one of the strands 5 in the outer braid 3. The strand 4 with the integrated stiffening element 7 has a greater height than the other strands 5 of the outer braid 3, so that a structure of normal and raised strands is formed. Ideally, the height or the cross-sectional area of ​​the stiffening element 7 deviates upwards from the other threads by a factor of 1.5 to 2 or more than 2, for example 4 or more than 4, but at least by 10%. PC 240757 C 11 / 17 July 4, 2024 The hose arrangement 1 according to the invention shown in Fig. 1 to Fig. 5 can be part of a series.The variants of the series all have an identical inner tube 2 and differ in the type and design of the outer braid 3. For example, the outer braid 3 can differ in its materials, filament counts or braid angle. Likewise, within the series of the hose arrangement 1, a variant can be designed in such a way that the outer braid 3 does not have a stiffening element 7. In a hose arrangement 1 according to the invention with an inner tube 2 and an outer braid 3 receiving the inner tube 2, wherein an outer braid 3 is formed from at least two strands 4, it is thus proposed that at least one strand 4 of the at least two strands 4, 8 has a stiffening element 7, by means of which a kink resistance is increased. / List of reference symbols.

[0002] PC 240757 C 12 / 17 4 July 2024 List of reference symbols 1 Hose arrangement 2 Inner hose 3 Outer braid 4 Strand 5 Thread 6 Monofilament 7 Stiffening element 8 Strand without stiffening element 9 Direction of extension / Claims

Claims

PC 240757 C 13 / 17 July 4, 2024 Claims 1. Hose arrangement (1) with an inner hose (2) and an outer braid (3), wherein the outer braid (3) is formed from at least two strands (4, 8), characterized in that at least one strand (4) of the at least two strands (4, 8) has a stiffening element (7).

2. Hose arrangement (1) according to claim 1, characterized in that the outer braid (3) comprises a self-supporting braid.

3. Hose arrangement (1) according to one of the preceding claims, characterized in that the stiffening element (7) winds around the casing of the inner hose (2) in a curve with a preferably constant gradient and / or that the stiffening element (7) only crosses monofilaments (6), threads (5), and / or strands (7) with lower kink resistance. 4.Hose arrangement (1) according to any preceding claim, characterized in that at least one strand (4) comprises at least one thread (5), which is designed in particular as the stiffening element (7).

5. Hose arrangement (1) according to any one of the preceding claims, characterized in that at least one thread (5) is braided from at least one monofilament (6).

6. Hose arrangement (1) according to any one of the preceding claims, characterized in that at least one thread (5) is designed as an individual monofilament (6) and / or is composed of individual monofilaments (6). PC 240757 C 14 / 17 July 4, 2024 7. Hose arrangement (1) according to one of the preceding claims, characterized in that at least one thread (5) differs in its material selection from the material selection of at least one thread (5) from another strand (4, 8) and / or that the stiffening element (7) differs in its material selection from the material selection of a thread (5) and / or from a monofilament (6) of its strand (4) and / or of another strand (8).

8. Hose arrangement (1) according to one of the preceding claims, characterized in that at least one strand (4) and / or at least one thread (5) is made of different plastic materials and / or from a combination of plastics and metal and / or from different materials. 9.Hose arrangement (1) according to one of the preceding claims, characterized in that the cross-section of the stiffening element (7) differs in a geometric size and / or geometric configuration from a cross-section of at least one thread (5) from another strand (4).

10. Hose arrangement (1) according to one of the preceding claims, characterized in that the geometric size is a surface area.

11. Hose arrangement (1) according to one of the preceding claims, characterized in that the geometric size is a maximum extension, preferably transverse to a direction of extension (9) of the stiffening element (7).

12. Hose arrangement (1) according to one of the preceding claims, characterized in that the geometric size is a number of corners. PC 240757 C 15 / 17 July 4, 2024 13. Hose arrangement (1) according to one of the preceding claims, characterized in that the geometric variable is a number of changes in sign of a curvature of a circumferential contour of the cross-section.

14. Hose arrangement (1) according to one of the preceding claims, characterized in that at least one strand (4) and / or thread (5) of at least one strand (4) and / or at least one thread (5) deviates upwards in its cross-sectional area by a factor greater than 1.5 to 2, or more than 2, for example 4 but at least greater than 10%.

15. Hose arrangement (1) according to one of the preceding claims, characterized in that at least one strand (4) and / or thread (5) of at least one strand (4) and / or thread (5) deviates upwards in its height by a factor greater than 1.5 to 2, or more than 2, for example 4 but at least 10%. 16.Hose arrangement (1) according to one of the preceding claims, characterized in that at least one strand (4) and / or thread (5) can be greater in height than at least one strand (4) and / or thread (5).

17. Hose arrangement (1) according to one of the preceding claims, characterized in that the inner hose (2) can be smooth on the inside and / or outside.

18. Hose arrangement (1) according to one of the preceding claims, characterized in that at least one outer braid (6) of the inner hose (2) is provided with at least one further outer braid (6).

19. Use of a stiffening element (7) in a. PC 240757 C 16 / 17 July 4, 2024 Outer braiding (3) for increasing the kink resistance and / or pressure resistance of a hose arrangement (1) according to claims 1 to 17, in particular in the sanitary sector and / or wherein the hose arrangement (1) has a drinking water approval.

20. Series, in particular for a hose arrangement (1), with at least two variants, in particular each designed according to one of the preceding claims on a hose arrangement (1), wherein the variants have a matching inner hose (2) and a different outer braiding (3), in particular wherein at least one outer braiding (3) is made of different materials and / or different filament numbers and / or different braiding angles.

21. Series according to one of the preceding claims, characterized in that at least one of the variants is an outer braiding (3) without a stiffening element (7). / Summary.

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