MULTI-HOSE ARRANGEMENT

Abstract

Multi-hose arrangement (1) having an outer hose (2) and at least one inner hose (3, 3a) disposed in the outer hose (2), and at least one coupling end (4) to which the outer hose (2) and the at least one inner hose (3, 3a) are attached. The the at least one coupling end (4) has a flow opening (5) for the outer hose (2), in which flow opening (5) is disposed a receptacle (6) for the at least one inner hose (3, 3a), and this receptacle encompasses the at least one inner hose (3, 3a) on less than a full circumference of the at least one inner hose (3, 3a).

Claims

1. A multi-hose arrangement (1, 1a), comprising: an outer hose (2); at least one inner hose (3, 3a) disposed in the outer hose (2); at least one coupling end (4, 4a) to which the outer hose (2) and the at least one inner hose (3, 3a) are attached; and the at least one coupling end (4, 4a) has a flow opening (5, 5b) for the outer hose (2), a receptacle (6, 6a, 6b) is disposed in the flow opening (5, 5b) for the at least one inner hose (3, 3a), and the receptacle encompasses the at least one inner hose (3, 3a) on less than a full circumference of the at least one inner hose (3, 3a).

2. The multi-hose arrangement (1, la) as claimed in claim 1, wherein the receptacle (6, 6a, 6b) encompasses the at least one inner hose (3, 3a) on more than half the circumference.

3. The multi-hose arrangement (1, la) as claimed in claim 1, wherein the flow opening (5) and the receptacle (6, 6a) are formed by bores which are offset eccentrically relative to one another.

4. The multi-hose arrangement (1, la) as claimed in claim 1, wherein the at least one inner hose (3, 3a) supports a hose stem (7, 7a, 7b) which is inserted into the receptacle (6, 6a).

5. The multi-hose arrangement (1, la) as claimed in claim 4, wherein the hose stem (7, 7a, 7b) is made from brass or stainless steel.

6. The multi-hose arrangement (1, 1a) as claimed in claim 4, wherein the hose stem (7, 7a, 7b) is held in the receptacle (6, 6a, 6b) by an interference fit.

7. The multi-hose arrangement (1, 1a) as claimed in claim 4, further comprising a retaining collar (15) supported on the at least one coupling end (4) configured on the hose stem (7, 7a).

8. The multi-hose arrangement (1, 1a) as claimed in claim 7, wherein a depression into which the hose stem (7, 7a, 7b) or the retaining collar fits is configured in the coupling end (4, 4a), and the hose stem (7, 7a, 7b) or the retaining collar (15) fills a depth of the depression.

9. The multi-hose arrangement (1, 1a) as claimed in claim 4, wherein the hose stem has an associated crimp barrel (8, 8a), the at least one coupling end (4, 4a) has a planar end face, and at least one of the hose stem (7, 7a, 7b), the associated crimp barrel (8, 8a), or the at least one inner hose (3, 3a) project beyond said planar end face.

10. The multi-hose arrangement (1, 1a) as claimed in claim 1, further comprising a sealing element (9, 9a), which comprises the at least one inner hose (3, 3a) along a full circumference, is placed onto the at least one coupling end (4, 4a) which is free.

11. The multi-hose arrangement (1, 1a) as claimed in claim 1, wherein an external diameter of the at least one inner hose (3, 3a) is smaller than an internal diameter of the flow opening (5, 5b).

12. The multi-hose arrangement (1, 1a) as claimed in claim 4, wherein at least two of the inner hoses (3, 3a) are disposed in the outer hose (2), the respective receptacles (6, 6a) of said inner hoses (3, 3a) being disposed so as to be mutually spaced apart, on the flow opening (5).

13. The multi-hose arrangement (1, 1a) as claimed in claim 12, wherein at least one of the receptacles (6b), into which the hose stems (7b) which are connected to one another are inserted, encompasses less than half the circumference of the respective inner hose (3).

14. The multi-hose arrangement (1, 1a) as claimed in claim 12, wherein a center spacing of the at least two inner hoses (3, 3a) at the at least one coupling end (4) is at least a size of an internal diameter of the flow opening (5).

15. The multi-hose arrangement (1, 1a) as claimed in claim 12, wherein the outer hose (2) has at least one of a corrugated inner layer or a braided outer layer.

16. The multi-hose arrangement (1, 1a) as claimed in claim 1, wherein the outer hose (2) is crimped to the at least one coupling end (4).

17. The multi-hose arrangement (1, 1a) as claimed in claim 12, wherein the respective hose stems (7, 7a, 7b) are configured to be separate from one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The invention will be described in more detail hereunder by means of a plurality of preferred exemplary embodiments.

[0025] In the Figures:

[0026] FIG. 1 shows a first multi-hose arrangement in a three-dimensional view and in a view from above;

[0027] FIG. 2 shows the first multi-hose arrangement having a sealing element, in a three-dimensional view and in a view from above;

[0028] FIG. 3 shows the multi-hose arrangement having the sealing element, in an exploded illustration;

[0029] FIG. 4 shows a second multi-hose arrangement in a three-dimensional view and in an exploded illustration; and

[0030] FIG. 5 shows lateral views of the first multi-hose arrangement during a manufacturing process of the first multi-hose arrangement.

DETAILED DESCRIPTION

[0031] FIG. 1 shows a multi-hose arrangement 1 in a three-dimensional view and in a view from above, having an outer hose 2, two inner hoses 3 and 3a disposed in the outer hose, and a coupling end 4. The outer hose 2 and the inner hoses 3, 3a are attached to the coupling end 4. The outer hose 2 is crimped to the coupling end 4, for example from the outside or by means of plunge-riveting technology. The coupling end 4 furthermore has a flow opening 5 for the outer hose 2. Two receptacles 6, 6a are disposed within the flow opening 5. The receptacles 6, 6a are of identical design. The receptacle 6 encompasses the inner hose 3 on less than a full circumference. Likewise, the receptacle 6a encloses the inner hose 3a on less than a full circumference.

[0032] The flow opening 5 is formed by a bore along a central axis of the coupling end 4 in the coupling end 4. The two receptacles 6 and 6a are formed by bores which are in each case offset eccentrically relative to the bore of the flow opening 5. A cross section of the bore of the flow opening 5, which is perpendicular to the central axis, intersects in each case cross sections of the bores of the receptacles 6 and 6a that are perpendicular to the central axis. The receptacles 6 and 6a in this manner represent incomplete or open circular shapes. The receptacles 6 and 6a, by means of the open circular shape of the receptacles 6 and 6a, encompass in each case the two inner hoses 3 and 3a—presently by way of the respective hose stems 7, 7a of the latter—on less than a full circumference, in particular on more than half the circumference, as is illustrated. It is guaranteed as a result that the two inner hoses 3 and 3a can be fixedly attached to the coupling end 4 without said inner hoses 3 and 3a being unintentionally released from the receptacles 6 and 6a. The hose stems 7, 7a, which are plugged on and crimped, are axially pressed into the receptacles 6, 6a in the process. Alternatively, the inner hose 3 or 3a (here in an exemplary manner by way of hose stems 7 and 7a) can be inserted, in particular pressed in, in a radially outward manner into the respective receptacle 6, 6a.

[0033] The coupling end has a bore face that encloses the flow opening 5, or a (bore) collar 5a of the flow opening that at least partially comprises the bore/bores of the two receptacles 6 and 6a. The collar 5a shown comprises the bores 6 and 6a on less than a full circumference. In this way, the collar 5a can be of a thinner design than a collar which encloses the bores 6 and 6a in each case on the full circumference thereof. As a result, not only can material be saved and the production of the multi-hose arrangement 1 be simplified but moreover, the flow opening 5 can be enlarged.

[0034] Furthermore, a center spacing of the two inner hoses 3 and 3a at the coupling end is at least the size of the or an internal diameter of the flow opening 5. In the example shown, the center spacing of the two inner hoses 3 and 3a is exactly the same size as an internal diameter of the flow opening 5. In other words: the centers of the bores for the receptacles of the two inner hoses 3 and 3a lie opposite one another, here in particular in each case on the periphery of the bore for the flow opening 5. In this arrangement, the receptacles 6 and 6a can be provided for fixedly receiving the two inner hoses 3 and 3a, and for a relatively large flow opening 5.

[0035] The inner hose 3 comprises or supports a hose stem 7, the opening of the latter receiving the inner hose 3. The inner hose 3a supports a hose stem 7a which in a corresponding manner is of an identical configuration. The inner hose 3 by means of a crimp barrel 8 is connected to the hose stem 7. The crimp barrel 8 is disposed within the inner hose 3 and within the hose stem 7. The inner hose 3 can be fixedly connected to the hose stem 7 by expanding the crimp barrel 8. To this end, the crimp barrel 8 is produced from a softer material than the hose stem 7. The hose stem 7 is made from a hard metal, brass or stainless steel, for example.

[0036] The hose stem 7 is held in the receptacle 6. The hose stem 7 can be held in the receptacle 6 by means of an interference fit, for example. The hose stem 7 moreover has a retaining collar which is supported on the coupling end 4. The retaining collar, or the entire hose stem 7, here fills a clearance or depression within the coupling end 4. The retaining collar, or the hose stem 7, terminates so as to be planar with the collar 5a. In other words: the opening formed by the hose stem 7 and the flow opening 5 lie within a planar face. Yet again in other words: the coupling end has a planar end face. The inner hose 3, or the crimp barrel 8, protrude beyond the planar end face. Alternatively or additionally, the hose stem 7 protrudes beyond the bore face 5a.

[0037] FIG. 2 shows the multi-hose arrangement 1 from FIG. 1. Identical or similar features are provided with the same reference signs. The multi-hose arrangement 1 shown in FIG. 2 comprises a sealing element 9. The sealing element 9 is designed so as to be circular. The external diameter of the sealing element 9 corresponds approximately to the or an available internal diameter of the coupling end 4. The sealing element 9 has a plurality of openings, specifically in each case one opening for the two inner hoses 3 and 3a, and one opening for the flow opening 5. The openings of the sealing element 9 for the inner hoses 3 and 3a enclose the inner hoses 3 and 3a along a full circumference. The internal diameters of the openings of the sealing element 9 for the inner hoses 3 and 3a correspond to an external diameter of the respective crimp barrels 8 and 8a, in particular to the external diameter of that part of the crimp barrels 8 and 8a that protrudes beyond the planar end face of the coupling end 4.

[0038] A planar sealing face is provided as a result of the planar end face of the coupling end 4. The sealing function of the sealing element 9 is improved as a result. The openings of the sealing element 9 for the inner hoses 3 and 3a enclose the crimp barrels 8, 8a or inner hoses 3 and 3a that protrude from the planar end face of the coupling end 4. The rotary position of the sealing element 9 relative to the coupling end 4 is fixed in this manner.

[0039] The hose stems 7 and 7a in FIGS. 1 and 2 are configured separately from one another. Alternatively, the two hose stems 7 and 7a can be connected to one another or integrally configured. In other words, a hose stem component can comprise both hose stems 7 and 7a. A hose stem component of this type can be inserted simultaneously into both receptacles 6 and 6a. The hose stem component is supported by both receptacles 6 and 6a in this manner. In other words: aside from the receptacle 6, the hose stem 7 is also supported by the hose stem 7a. As a result, the respective receptacles 6 and 6a can be designed in such a manner that the latter comprise the inner hoses 3 and 3a in each case on less than half the circumference, for example in each case on less than or equal to a quarter of the circumference, without the stability of the hose stems 7 and 7a being compromised. Yet again in other words: the receptacles 6 and 6a can in each case enclose a central angle of the inner hoses 3 and 3a that is less than 180°, for example less than or equal to 90°. In this way, the flow opening 5 can be enlarged while simultaneously guaranteeing that the hose stems 7 and 7a are fixedly held in the respective receptacles 6 and 6a.

[0040] FIG. 3 shows an exploded illustration of the multi-hose assembly 1 from FIG. 2. Identical or similar features are provided with the same reference signs.

[0041] FIG. 4 shows a three-dimensional view and an exploded illustration of a second exemplary embodiment of a multi-hose arrangement 1a similar to the first multi-hose arrangement 1. Identical or similar features are provided with the same reference signs. The multi-hose arrangement 1a comprises an outer hose 2 and two inner hoses 3 and 3a disposed in the outer hose 2, and a coupling end 4a. The coupling end 4a has a flow opening 5b for the outer hose 2. A receptacle 6b for the two inner hoses 3 and 3a is disposed in the flow opening 5b. In other words: the two inner hoses 3 and 3a are disposed in a common receptacle 6b. The common receptacle 6b encompasses the two inner hoses 3 and 3a—here in an exemplary manner by way of a common hose stem 7b—on less than a full circumference. As already in the exemplary embodiment shown in FIGS. 1 to 3, the flow opening 5b in this manner adjoins directly the receptacle(s) 6 and 6a, or 6b, of the two inner hoses 3 and 3a. As illustrated, the common receptacle 6b encloses the two inner hoses 3 and 3a in each case on more than half a circumference. In other words: the receptacle 6a encloses in each case a central angle of the inner hoses 3 and 3a that is less than 360° and more than 180°. Alternatively, the common receptacle 6b can enclose the two inner hoses 3 and 3a in each case on less than half a circumference.

[0042] The multi-hose arrangement 1a comprises an integrally configured hose stem component 7b which comprises two hose stems. The hose stem component 7b corresponds to the two integrally connected hose stems 7 and 7a. The hose stems of the hose stem component 7b, in the same way as the hose stems 7 and 7a, are in each case crimped by a crimp barrel 8, 8a expanded from the inside. The hose stem component 7b forms a planar end face with the coupling end 4a. As has been described in the context of FIGS. 1 to 3, the hose stem component 7b can be held in the receptacle 6b by way of an interference fit. The hose stem component 7b bears on a bearing shoulder 10 of the coupling end 4a. Additionally or alternatively, the hose stem component 7b fits into a depression of the coupling end 4a and/or fills a depth of the depression.

[0043] The crimp barrels 8, or the inner hoses 3 and 3a, protrude beyond the planar end face. Likewise shown is a sealing element 9a. The sealing element 9a has in each case openings for the openings of the hose stem component 7b, or of the inner hoses 3 and 3a, and of the flow opening 5b, wherein the openings of the sealing element 9a for the inner hoses 3 and 3a in turn fit onto the projecting crimp barrels 8 and 8a.

[0044] Furthermore shown is a locking element 11 which engages in an opening in the coupling end 4a as well as into an opening in the sealing element 9a, or fills said openings, respectively. In this way, the position, or the rotary position, of the circular sealing element 9a relative to the coupling end 4a is able to be locked.

[0045] FIG. 5 shows a manufacturing process of the multi-hose arrangement 1 shown in FIGS. 1 to 3. Identical or similar features are provided with the same reference signs.

[0046] A first step (FIG. 5, left image) comprises the connecting, in particular the crimping, of the outer hose 2 to the coupling end 4. In particular, an outer sleeve 12 can be press-fitted to an inner sleeve 13 of the coupling end 4. The outer hose 2 is disposed between the outer sleeve 12 and the inner sleeve 13.

[0047] The first step thus comprises the attaching of the outer sleeve 2 to the coupling end 4, wherein two inner hoses 3 and 3a are disposed in the outer hose 2. The first step comprises in particular the introducing of the outer hose 2 into the coupling end 4.

[0048] A second step comprises crimping of the inner hoses 3 and 3a to in each case one hose stem 7, 7a by means of a crimp barrel 8, 8a. The second step (i) comprises in particular the introducing of the inner hoses 3 and 3a into the hose stems 7 and 7a (cf. FIG. 5, second image from the left); (ii) the introducing of the crimp barrels 8 and 8a into the inner hoses 3 and 3a and into the hose stems 7 and 7a; and (iii) the expanding of the crimp barrels 8 and 8a for crimping the inner hoses 3 and 3a to in each case one hose stem 7, 7a. This results in the central image of FIG. 5.

[0049] The third step (second image from the right in FIG. 5) comprises in particular the interference-fitting of the hose stems 7, 7a of the inner hoses 3 and 3a in corresponding receptacles 6 and 6a of the coupling end 4.

[0050] Subsequently (right image in FIG. 5) a threaded sleeve 14 can be pushed on. The coupling end 4 can also be configured for another type of connection, for example a plug connection or a twist connection.

[0051] As is shown in FIG. 5, the outer hose 2 has a braided outer layer. The outer hose 2 furthermore has a corrugated inner layer (not illustrated).

[0052] It is a common feature of both exemplary embodiments shown in FIGS. 1 to 5 that the external diameters of the two inner hoses 3 and 3a are in each case smaller than an available internal diameter of the outer hose 2, in particular smaller than half the available internal diameter of the outer hose 2. In this manner, more than one inner hose, in the example shown two inner hoses, can be accommodated in the outer hose 2.

LIST OF REFERENCE SIGNS

[0053] 1 (First) multi-hose arrangement [0054] 1a (Further) multi-hose arrangement [0055] 2 Outer hose [0056] 3 First inner hose [0057] 3a Second inner hose [0058] 4 First coupling end [0059] 4a Second coupling end [0060] 5 First flow opening [0061] 5a Collar of the flow opening [0062] 5b Second flow opening [0063] 6 First receptacle [0064] 6a Second receptacle [0065] 6b Third, or common, receptacle [0066] 7 First hose stem [0067] 7a Second hose stem [0068] 7b Hose stem (component) [0069] 8 First crimp barrel [0070] 8a Second crimp barrel [0071] 9 First sealing element [0072] 9a Second sealing element [0073] 10 Bearing shoulder of the coupling end [0074] 11 Locking element [0075] 12 Outer sleeve [0076] 13 Inner sleeve [0077] 14 Threaded sleeve [0078] 15 Retaining lip