HOSE CONNECTOR AND METHOD FOR THE FLUID-TIGHT CONNECTION OF ONE END OF A FLUID LINE TO SUCH A HOSE CONNECTOR

Abstract

The invention relates to a hose connector with an inner sleeve (2) and an outer sleeve (3) between which an annular space (5) is formed at least in a first end region (4), in which annular space one end (7) of a fluid line (8) is received. Furthermore, the invention relates to a method for the fluid-tight connection of one end of a fluid line to a hose connector. The hose connector is intended to be permanently and securely connected to the fluid line with little effort. Therefore, by means of crimping the inner sleeve (2) and the outer sleeve (3) in the end region (4), a force-fitting and form-fitting connection between the end (7) of the fluid line (8) and the hose connector (1) is formed.

Claims

1. A hose connector, comprising: an inner sleeve and an outer sleeve, an annular space, formed in a first end region between the inner sleeve and the outer sleeve, in which an end of a fluid line is accommodated, wherein a non-positive and positive connection formed between the end of the fluid line and the hose connector by crimping the inner sleeve and outer sleeve in first end region.

2. The hose connector as claimed in claim 1, wherein at least one inwardly projecting crimp fold is formed into the outer sleeve and at least one outwardly projecting crimp fold is formed into the inner sleeve, and wherein the outer sleeve, in a region of the inwardly projecting crimp fold, is pressed into an outer side of the end of the fluid line, and the inner sleeve, in a region of the outwardly projecting crimp fold, is pressed into an inner side of the end of the fluid line.

3. The hose connector as claimed in claim 2, wherein the inner sleeve is more plastically deformed in the region of the outwardly projecting crimp fold than the outer sleeve in the region of the inwardly projecting crimp fold.

4. The hose connector as claimed in claim 2, wherein the outwardly projecting crimp fold of the inner sleeve is configured in the form of an annular groove.

5. The hose connector as claimed in claim 2, wherein the outer sleeve has at least two inwardly projecting crimp folds, which are pressed into the end of the fluid line.

6. The hose connector as claimed in claim 1, wherein the inwardly projecting crimp fold of the outer sleeve is configured as an external thread.

7. The hose connector as claimed in claim 2, wherein the inwardly projecting crimp fold of the outer sleeve is configured as annular groove portions lying on at least one peripheral line.

8. The hose connector as claimed in claim 7, wherein the annular groove portions lie on two mutually parallel peripheral lines and are arranged with a gap in-between.

9. The hose connector as claimed in claim 2, wherein the inwardly projecting crimp fold of the outer sleeve ends axially closer to an end of the first end region than the outwardly projecting crimp fold of the inner sleeve.

10. The hose connector as claimed in claim 1, wherein the inner sleeve and the outer sleeve bear against one another in a second end region.

11. The hose connector as claimed in claim 10, wherein the inner sleeve and the outer sleeve, in the second end region, are materially connected to each other.

12. A method for the fluid-tight connection of one end of a fluid line to a hose connector as claimed in claim 1, comprising: crimping the inner sleeve and the outer sleeve into the end of the fluid line, with the formation of a non-positive and positive connection.

13. The hose connector as claimed in claim 4, wherein the annular groove has at least one of a rectangular and/or a triangular cross section.

14. The hose connector as claimed in claim 5, wherein the at least two inwardly projecting crimp folds are pressed into the end of the fluid line with different strengths.

15. The hose connector as claimed in claim 10, wherein an outside diameter of the hose connector is smaller in the second end region than in the first end region.

Description

[0027] Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of illustrative embodiments on the basis of the drawings, in which:

[0028] FIG. 1 shows a sectioned side view of a hose connector of a first embodiment,

[0029] FIG. 2 shows a sectioned side view of a hose connector of a second embodiment, and

[0030] FIG. 3 shows a sectioned side view of a hose connector of a third embodiment.

[0031] In FIG. 1, a hose connector is represented in sectioned side view. The hose connector 1 comprises an inner sleeve 2 and an outer sleeve 3, which in a first end region 4 are spaced apart with the formation of an annular space 5, and in a second end region 6 bear one against the other. In this example, the hose connector 1 is made of a metal.

[0032] In the annular space 5 is accommodated one end 7 of a fluid line 8, which latter, in this example, is configured as a plastics pipe. In order to prevent release of the fluid line 8 from the house connector 1, both the inner sleeve 2 and the outer sleeve 3 have been plastically deformed in the end region by means of crimping, such that crimp folds 9, 10 of the outer sleeve 3 press radially inward into an outer side 11 at the end 7 of the fluid line 8, while a crimp fold 12 of the inner sleeve 2 presses radially outward into an inner side 13 of the fluid line. The crimp fold 10 of the outer sleeve 3 is here located closest to one end of the hose connector 1. As a result of this double-sided crimping, the material at the interface is reinforced and seal tightness, holding force and pressure resistance are increased.

[0033] In FIG. 2 is represented a modified embodiment of the hose connector 1, wherein, as in the following illustrative embodiment, the reference symbols of the previous embodiment are maintained. Unlike the embodiment according to FIG. 1, only a single crimp fold 9 is made in the outer sleeve 3 and two crimp folds 12, 14 are present in the inner sleeve 2. For the rest, this illustrative embodiment corresponds to the illustrative embodiment according to FIG. 1.

[0034] FIG. 3 shows a more widely modified embodiment of the hose connector 1. The crimp fold 9 in the outer sleeve 3 is here shaped out in the form of an external thread, which also presses into the outer side 11 of the end 7 of the fluid line and in this way produces a non-positive and positive connection. In turn, just one crimp fold 12 is shaped in the inner sleeve 2. The external thread enables relatively easily a secure, releasable connection of the hose connector 1 to other elements.

[0035] The invention is not limited to the embodiments previously described, but can be modified in a variety of ways. For instance, in particular the shape and number of the crimp folds can be varied. In this context, only the provision of a double-sided crimping, i.e. a permanent deformation both of the inner sleeve and of the outer sleeve, is essential, in order to realize a non-positive and positive connection between hose connector and fluid line.

[0036] All features and advantages arising from the claims, the description and the drawing, inclusive of design details, spatial arrangements and method steps, can be fundamental to the invention both in their own right and in the highly diverse combinations.

REFERENCE SYMBOL LIST

[0037] 1. hose connector

[0038] 2. inner sleeve

[0039] 3. outer sleeve

[0040] 4. first end region

[0041] 5. annular space

[0042] 6. second end region

[0043] 7. end

[0044] 8. fluid line

[0045] 9. crimp fold

[0046] 10. crimp fold

[0047] 11. outer side

[0048] 12. crimp fold

[0049] 13. inner side

[0050] 14. crimp fold