DE102021120708A1 - hose assembly - Google Patents

Abstract

In a hose arrangement (1) according to the invention, which has an inner hose (2) and an outer braiding (3) accommodating the inner hose (2), the outer braiding (3) being braided from individual strands (4), each individual strand (17) consisting of two or is composed of four filaments (5), it is proposed to form at least one filament (5) with a boundary contour (6), so that the boundary contour (6) forms differently curved peripheral sections (9, 10, 11) (cf. Fig. 1).

Description

The invention relates to a hose arrangement with an inner hose and an outer braid, in which the individual strands are braided together, with each individual strand having at least two filaments.

Braids of this type are known in hose arrangements and are used, for example, for reinforcement but also for the visual design of hose arrangements.

The object of the invention is to improve the performance characteristics of a hose arrangement.

To solve the above problem, the features of claim 1 are provided according to the invention. In particular, in order to achieve the stated object in a hose arrangement of the type described above, it is proposed according to the invention that at least one filament of the individual strand has a non-round boundary contour in cross section. This can limit the optical reflection impression of the surface to a smaller area of the boundary contour and thus creates an optically attractive appearance. Thus, the performance is improved.

In an advantageous embodiment it can be provided that the boundary contour defines an outer surface or an inner surface. Different design options can thus be provided. A design on an outer surface can have the advantage that light reflections have an immediate effect. A configuration on an inner surface can have the advantage that a haptic impression remains unchanged.

In an advantageous embodiment it can be provided that the delimiting contour delimits a non-round cross-sectional profile. A non-round boundary contour can thus be formed simply by shaping the filament.

In an advantageous embodiment it can be provided that the boundary contour defines a polygon. Filaments that can be produced in a particularly simple manner, in particular in an extrusion molding or extrusion process, can thus be used.

The polygon can be, for example, a rectilinearly delimited polygon. Thus, particularly sharp vertices between two surfaces can be used to concentrate light reflections.

The polygon can be a polygon with rounded corners, for example. It is thus possible for a light reflection to migrate across the filament when it is rotated around its longitudinal axis.

Specific examples of polygons that can be used to advantage include a triangle-shaped, square-shaped, or polygon-shaped polygon.

In an advantageous embodiment, it can be provided that at least two peripheral sections of the delimiting contour have curvatures that differ from one another. Thus light reflections can be freely concentrated and/or defined.

In an advantageous embodiment, it can be provided that the curvatures have different signs. Thus, free forms can be used. In addition, a different change in the respective light reflections can be achieved when the filament moves relative to an observer.

In an advantageous embodiment, it can be provided that the curvatures are different in terms of absolute value. Thus, differently strong concentrations of the light reflections can be achieved.

In an advantageous embodiment it can be provided that the delimiting contour has a concave indentation. A simple means is thus described for achieving alternating signs of the curvature along the boundary contour.

For example, it can be provided that the cross-sectional profile has a concave indentation.

The concave indentation can be formed in one of the at least two peripheral sections, for example.

In an advantageous embodiment it can be provided that the delimiting contour has a discrete or continuous rotational symmetry. A regular reflection impression can thus be achieved.

Limiting contours with discrete symmetry, in particular with two-fold, three-fold or four-fold symmetry, are particularly easy to produce in the dimensions of the filaments on tools for extrusion. Low symmetry has the advantage of simple structures that pose little challenge to the tooling of an extrusion or extrusion die.

Here, a discrete rotational symmetry can be characterized, for example, by the fact that there is only a finite number of angles (many times a basic angle) by which the boundary contour can be rotated in order to bring the boundary contour into congruence with itself.

For example, it can be provided that the cross-sectional profile has a discrete or continuous rotational symmetry.

In an advantageous embodiment, it can be provided that the delimiting contour has at least mirror symmetry. A symmetrical reflection impression can thus be created.

For example, it can be provided that the cross-sectional profile has at least mirror symmetry.

In an advantageous embodiment, it can be provided that the delimiting contour is X-shaped, Y-shaped or star-shaped. Thus, boundary contours are described that allow a particularly balanced formation of curved sections, in particular with rounded edges on the filament.

For example, it can be provided that the cross-sectional profile is X-shaped, Y-shaped or star-shaped.

In an advantageous embodiment, it can be provided that an inner braiding is formed within the outer braiding. The external braiding can thus be mechanically relieved and/or additional optical reflections can be generated.

In an advantageous embodiment, it can be provided that the filament is designed with an at least partially reflective surface. A light reflection can thus be formed in a particularly easily visible manner.

For example, it can be provided that the surface is designed to be more than 50% reflective. It has been found that a particularly good-looking reflection behavior can be achieved with such surfaces.

In an advantageous embodiment it can be provided that the boundary contour defines a hollow filament. It is thus particularly easy to create inner surfaces that can be used for the invention.

For example, it can be provided that the cross-sectional profile defines a hollow filament.

In particular, it can be provided that the at least one filament is made of a transparent material. This means that inner surfaces can be seen from the outside.

• 1 eine erfindungsgemäße Schlauchanordnungen in einer vereinfachenden Seitenansicht,
• 2 eine zweilagige Umflechtung für eine Schlauchanordnungen gemäß 1,
• 3 die Umflechtung gemäß 2 in einer weiteren Ansicht,
• 4 die Umflechtung aus 2 in einer dritten Ansicht
• 5 eine weitere zweilagige Umflechtung,
• 6 die Umflechtung gemäß 5 in einer Seitenansicht,
• 7 einen Querschnitt durch ein Filament einer Umflechtung gemäß 2,
• 8 einen Querschnitt eines weiteren Filaments aus einer unteren Lage einer Umflechtung gemäß 2,
• 9 Beispiele für Querschnitte durch Filamente von erfindungsgemäßen Schlauchanordnungen,
• 10 weitere Beispiele für Querschnitte durch Filamente von erfindungsgemäßen Schlauchanordnungen und
• 11 Querschnitte von Hohlfilamenten von erfindungsgemäßen Schlauchanordnungen.

The invention will now be described in more detail using exemplary embodiments, but is not limited to the exemplary embodiments. Further exemplary embodiments result from combining the features of individual or multiple claims with one another and/or with one or more features of the exemplary embodiment.

• 1 a hose arrangement according to the invention in a simplified side view,
• 2 a two-layer braid for a hose assembly according to 1 ,
• 3 the braiding according to 2 in another view,
• 4 the braiding off 2 in a third view
• 5 another two-layer braid,
• 6 the braiding according to 5 in a side view,
• 7 according to a cross section through a filament of a braid 2 ,
• 8th a cross-section of another filament from a lower layer of a braid according to 2 ,
• 9 Examples of cross sections through filaments of hose assemblies according to the invention,
• 10 further examples of cross sections through filaments of hose assemblies according to the invention and
• 11 Cross sections of hollow filaments of hose assemblies according to the invention.

1 shows a hose arrangement according to the invention, denoted as a whole by 1, in a view from one side.

The 2 until 4 show excerpts from the in 1 Hose arrangement 1 shown only schematically.

The hose arrangement 1 has an inner hose 2. In the exemplary embodiment, the inner hose 2 is designed as a corrugated hose.

The hose assembly 1 further has an outer braid 3 which is routed around the inner hose 2 and encloses it.

The hose arrangement 1 can have a crimp sleeve 24 at least at one end, which connects the inner hose 2 and the outer braiding 3 and/or is fixed to a hose connection piece 25, for example a hose nipple.

The outer braiding 3 is braided from a large number of individual strands 4 which are each composed of filaments 5 .

In this case, the filaments 5 run essentially longitudinally (or parallel) and cross one another.

In the embodiment according to 1 until 4 each individual strand 4 has four filaments 5 .

7 shows a cross section through a filament 5 from the 1 until 6 .

The cross section is defined by a boundary contour 6 which is non-circular in relation to a center 7 . The boundary contour 6 belongs to an outer surface 8 of the filament 5.

The cross-sectional shape means that the boundary contour 6 has a plurality of peripheral sections 9, 10, 11, which form curvatures that differ from one another.

In this case, the peripheral sections 9 and 11 have opposite signs of the curvatures to one another, it being possible for the curvatures to match in terms of amount.

Furthermore, the peripheral sections 9 and 10 have the same mathematical sign of the curvature, but have different amounts of curvature.

This results in the concentration of light reflections, the so-called light edges, in the peripheral sections 9, 11 with an increased amount of curvature.

While the profile of the peripheral section 9 can be described as a rounding 12, for example, the peripheral section 11 could be characterized as a concave indentation 13, for example.

In 7 It can also be seen that the cross-sectional profile 14 has a four-fold discrete rotational symmetry, in which the cross-sectional profile 14 is converted into itself when rotated by 90°.

Furthermore, there is mirror symmetry with reflections on the axes 15 shown.

The hose assembly 1 further has an inner braid 16. The inner braid 16 is braided from strands 17 each composed of four filaments 18. As shown in FIG.

8th shows that the filaments 18 of the inner braid 16 have a round cross-section.

The 5 and 6 each show a single strand 4, 17 of the outer braiding 3 and the inner braiding 16.

The inner braiding 16 is here arranged between the outer braiding 3 and the inner hose 2 .

In further exemplary embodiments, the filaments 5 are made of partially or fully reflective material or are formed with such a coating.

9 shows an example of a series of boundary contours 6 for filaments 5 of the individual strands 4.

The following are shown as examples: polygons with flat edges and sharp vertices 20 formed between them (top left), polygons with straight edges 19 and rounded corners 21 (top, second example from the left), polygons with curved edges 19 and rounded corners 21 (top, second example from the right), free forms 22 (top, right), ellipses (bottom, left), ovals (bottom, second example from the left), square contours with slightly rounded corners 21 (bottom, second example from the right) and one more Example of a free form 22 (below, right)

10 shows a further collection of possible boundary contours 6 of the filaments 5 of the hose arrangement 1 according to the invention.

11 shows two more boundary contours 6, which - describe inner surfaces 23 - unlike in the previous embodiments.

In this case, the filaments 5 are made of transparent material, so that the inner surfaces 23 present light edges that are concentrated toward the outside.

In the hose arrangement 1 according to the invention, which has an inner hose 2 and an outer braiding 3 accommodating the inner hose 2, with the outer braiding 3 being braided from individual strands 4, with each individual strand 4 being composed of two or four filaments 5, it is therefore proposed that at least one filament 5 form with a boundary contour 6, so that the boundary contour 6 forms differently curved peripheral sections 9, 10,11.

Reference List

1

hose assembly

2

inner tube

3

outer braid

4

single strands

5

filament

6

boundary contour

7

center

8th

outer surface

9

perimeter section

10

perimeter section

11

perimeter section

12

fillet

13

concave indentation

14

cross-sectional profile

15

axis

16

inner braid

17

single strand

18

filament

19

edge

20

apex

21

Corner

22

free forms

23

Inner surface

24

crimp sleeve

25

hose connector

Claims (14)

Hose arrangement (1) with an inner hose (2) and an outer braiding (3), in which the individual strands (4) are braided together, each individual strand (4) having at least two filaments (5), characterized in that at least one filament ( 5) of the single strand (4) has a non-round boundary contour (6) in cross section. Hose arrangement (1) according to the preceding claim, characterized in that the boundary contour (6) defines an outer surface (8) and/or an inner surface (23). Hose arrangement (1) according to one of the preceding claims, characterized in that the delimiting contour (6) delimits a non-round cross-sectional profile (14). Hose arrangement (1) according to one of the preceding claims, characterized in that the boundary contour (6) defines a polygon, in particular a rectilinearly bounded polygon and/or a polygon with rounded corners (21), preferably a triangular, quadrangular or polygonal polygon. Hose arrangement (1) according to one of the preceding claims, characterized in that at least two peripheral sections (9, 10, 11) of the boundary contour (6) have curvatures which differ from one another. Hose arrangement (1) according to one of the preceding claims, characterized in that the curvatures have different signs. Hose arrangement (1) according to one of the preceding claims, characterized in that the curvatures differ in terms of amount. Hose arrangement (1) according to one of the preceding claims, characterized in that the boundary contour (6), in particular the cross-sectional profile (14), has a concave indentation (13), in particular in one of the at least two peripheral sections (9, 10, 11). Hose arrangement (1) according to one of the preceding claims, characterized in that the delimiting contour (6), in particular the cross-sectional profile (14), has a discrete or continuous rotational symmetry. Hose arrangement (1) according to one of the preceding claims, characterized in that the boundary contour (6), in particular the cross-sectional profile (14), has at least mirror symmetry. Hose arrangement (1) according to one of the preceding claims, characterized in that the boundary contour (6), in particular the cross-sectional profile (14), is X-shaped, Y-shaped or star-shaped. Hose arrangement (1) according to one of the preceding claims, characterized in that an inner braiding (16) is formed inside the outer braiding (3). Hose arrangement (1) according to one of the preceding claims, characterized in that the filament (5) is formed with an at least partially, in particular more than 50%, reflecting surface. Hose arrangement (1) according to any one of the preceding claims, characterized in that the boundary contour (6), in particular the cross-sectional profile (14) defines a hollow filament, in particular the at least one filament (5) is made of a transparent material.

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