Fastening device for fastening tubes to a sanitary fitting

Abstract

A fastening device for fastening tubes (6) to a sanitary fitting, having a basic body (10) with two inlet openings (2) and an outlet opening (3) in each case for the introduction of a tube connector (4), characterized in that a spring clip (12) is guided around the outlet opening (3) and engages from the outside in the two inlet openings (2) in order to permit securing there.

Description

[0001] Fastening device for attaching hoses to a sanitary fitting

[0002] The invention relates to a fastening device for fastening hoses to a sanitary fitting, comprising a base body with two inlet openings and one outlet opening, each for inserting a hose connector.

[0003] There are sanitary fittings in the state of the art in which the fluid connections are connected to the fitting, especially to the valve, via hoses. Fastening devices are known for securing the hoses, which fix the hoses in the insertion direction. The fastening device therefore essentially prevents the hose from being forced out of its inlet or outlet opening by water pressure.

[0004] The object of the invention is to create an alternative fastening device.

[0005] This object is achieved by a fastening device having the features of claim 1.

[0006] The fastening device according to the invention is characterized in that a spring clip is guided around the outlet opening and engages from the outside at least into the two inlet openings in order to enable securing there.

[0007] The spring clip adheres to the base body and engages the axially secured hoses or hose connectors in such a way that no preload of the spring clip on the hose connectors is necessary. This can be achieved, for example, by preloading the spring clip against the base body. The spring clip can also rest freely against the base body.

[0008] In one embodiment, the spring clip also engages from the outside in the drain opening, transverse to the insertion direction of a hose connector. This can be achieved, for example, by the drain opening having at least one opening into which the spring clip engages. This allows for axial securing of a hose connector in the drain opening as well. In particular, the drain opening can be located substantially in the center of the spring clip. This also allows for a simple fixation of the drain hose.

[0009] In one design, the spring clip forms a substantially circular arc. This arc essentially creates a spring force that holds the spring clip in position.

[0010] In one design, the spring clip engages more than halfway behind the inlet openings in its insertion direction, so that the spring clip generates a holding force.

[0011] In an alternative design, the spring clip engages behind the drain opening in its insertion direction to more than half, so that the spring clip generates a holding force or the drain opening.

[0012] In the first variant, gripping is provided from the radial outside, while in the second variant the bracket is guided somewhat narrower and thus does not engage directly from the outside, but from the side (along a secant).

[0013] Preferably, the spring clip engages transversely to the

[0014] Insert a hose connector in the direction of insertion or in the radial direction into an opening of the inlet and / or outlet openings. This ensures secure fixation of the hose connector within the inlet and / or outlet opening.

[0015] In one version, one end of the spring clip engages with one of the inlet and / or outlet openings. The spring clip extends through the opening and also engages with an inserted hose connector.

[0016] In one embodiment, the ends of the spring clip each have a bend that deviates from the circular shape, in particular wherein the bend engages in the opening of the inlet opening.

[0017] In one embodiment, an axial fixation, for example with at least one fixing projection, is formed on the base body for the spring clip, which fixes the spring clip in the insertion direction of a hose connector. This prevents the spring clip from being subjected to a torque in the area of ​​the opening caused by a movement of the hose connector caused by water pressure. This relieves pressure on the opening, thereby preventing possible damage to the base body.

[0018] The axial fixation can be designed in various ways. The axial fixation can preferably be arranged on the outside of the drain opening.

[0019] The axial fixation can be formed by at least two axially spaced-apart fixing projections, between which the spring clip lies in the position of use. Preferably, the axial distance between the fixing projections corresponds substantially to the axial extent of the spring clip. This prevents axial movement of the spring clip.

[0020] The two fixing lugs can be arranged offset from one another in the circumferential direction of the drain opening, thereby increasing the effective support surface.

[0021] Axial fixation can also be achieved by a groove into which the spring clip engages in the operating position. The groove is preferably formed at the drain opening and oriented in a tangential direction.

[0022] To ensure that the spring clip can develop a spring force, it is advantageous if it is made of an elastic material, preferably a spring-elastic material. It is particularly advantageous if the spring clip is made of metal or plastic.

[0023] In one embodiment, the base body has an interface for connecting to a valve cartridge, or the base body is molded onto a valve cartridge. In this way, the fastening device according to the invention is versatile and also suitable for replacement in existing fittings.

[0024] The invention is explained in more detail below using exemplary embodiments with reference to the accompanying drawings.

[0025] It shows :

[0026] Fig. 1 shows a longitudinal section through a first embodiment of a fastening device, with inserted hoses,

[0027] Fig. 2 is an oblique view of the fastening device of Fig. 1,

[0028] Fig. 3 is a cross-section through the oblique view of Fig. 1, Fig. 4 is an oblique view of a second embodiment of a fastening device,

[0029] Fig. 5 is a cross-section through the oblique view of Fig. 4,

[0030] Fig. 6 a side view of the fastening device of the

[0031] Fig. 4,

[0032] Fig. 7 shows a cross section of the fastening device of Fig.

[0033] 4,

[0034] Fig. 8 shows a cross section of the fastening device of Fig. 2,

[0035] Fig. 9 is a cross-section of an alternative fastening device similar to Fig. 2,

[0036] Fig. 10 is an oblique view of a third embodiment of a fastening device,

[0037] Fig. 11 shows a cross section through the fastening device of Fig. 10,

[0038] Fig. 12 is a cross-section of the oblique view of Fig. 10 and

[0039] Fig. 13 shows a section of the fastening device of Fig. 10 without spring clip.

[0040] Figures 1 to 3 show a first embodiment of a fastening device 1 according to the invention. The fastening device 1 has a base body 10 with two inlet openings 2 and one outlet opening 3. An O-ring 25 for radial sealing of the fastening device 1 is arranged on the base body 10.

[0041] In the example, the outlet opening 3 is longer in the axial direction than the inlet openings 2. However, this is irrelevant to the invention.

[0042] The inlet openings 2 are designed so that a hose connector 4 can be inserted into each one.

[0043] A hose connector 4 has a plug-in part 5 onto which a hose 6 can be plugged and to which the hose 6 is fastened via a crimp connector 7. The hose connector 4 has an insert part 8 axially extending from the plug-in part 5, which can be inserted into an inlet opening 2. An O-ring 25 is inserted into a circumferential groove on this insert part 8 as a radial seal against the inlet opening 2.

[0044] In the example, the insertion part 8 has a further circumferential groove 9, which in the example is located further away from the insertion end of the insertion part 8 in the axial direction than the O-ring 25, i.e. closer to the plug-on part 5 than the O-ring 25. The base body 10 has an opening 11 at each of the inlet openings 2, which corresponds in the axial direction to the position of the circumferential groove 9 of a hose connector 4.

[0045] To secure the hose 6 within the inlet opening, a spring clip 12 is provided, which engages through the opening 11 into the groove 9. In this way, the hose connector 4 is fixed within the inlet opening 2 in the hose insertion direction Pfl.

[0046] In this embodiment, the openings 11 in the inlet openings 2 are approximately parallel to a connecting line 20 through the centers of the two inlet openings 2.

[0047] The spring clip 12 is guided outside around the drain opening 3 and forms a bend 13. The bend 13 extends from the spring clip insertion direction Pf2 over the center 21 of the drain opening 3, so that the bend 13 engages behind the drain opening 3 and narrows behind the drain opening 3, so that a constriction 22 is formed. The spring clip 12 thus clasps the drain opening 3 and thereby forms a holding force on the drain opening 3, which fixes the spring clip 12 in its insertion direction Pf2. At its ends, the bend 13 has kinks 14, which bend the spring clip outwards by approximately 90°. These bent ends 15 engage in the openings 11 and the grooves 9 of the hose connectors 4 in the spring clip insertion direction Pf2.

[0048] In a further embodiment, the spring clip 12 is shaped such that, in its position of use, it engages from the outside into the drain opening 3 in order to axially secure a hose connector 4 which is inserted there.

[0049] The fastening device 1 according to Figs. 1 to 3 has an interface 16, such as a flange, at its free end for connection to a valve cartridge or a fitting. The connection to a valve cartridge is made, for example, within a fitting by axial clamping using a screw connection or by other known means.

[0050] Figures 4 to 7 show an alternative embodiment of a fastening device 1. In this case, identical features are provided with the same reference symbols and are not described separately again.

[0051] The difference to the embodiment of Figures 1 to 3 is that the openings 11 in the inlet openings are now each located radially outside the inlet openings 2 in the region of a connecting line 20 through the centers of the inlet openings 2.

[0052] Here, the spring clip forms a somewhat larger bend 13, which extends from the spring clip insertion direction Pf2 over the center of the inlet openings 3, so that the bend 13 engages behind the inlet openings 3. Bends 14 are formed at the ends of the bend 13, which are directed radially inward from the bend 13. The bent ends 15 also engage from the outside into the openings 11 of the inlet openings 2.

[0053] In this embodiment, the spring clip 12 is fixed in its insertion direction Pf2 by engaging in the openings 11.

[0054] For the axial fixing of the spring clip 13 to the fastening device 1, two fixing lugs 17 are arranged on the outer circumference of the drain opening 3, which are axially spaced from one another such that the spring clip 13 passes between the fixing lugs 17.

[0055] In the examples shown, a snap connection 19 is provided for the axial fixation of the drain hose 18.

[0056] In both designs, however, it would also be conceivable that there is also an opening at the drain opening 3 into which the spring clip 13 engages in order to engage a hose connector of the drain opening.

[0057] Figures 8 and 9 each show a two-dimensional sectional view in the transverse plane of a fastening device 1 according to the invention as shown in Figures 1 to 3.

[0058] Figure 8 shows how the spring clip 12 is guided from the outside around the drain opening 3 and forms a bend 13.

[0059] The bend 13 engages behind the drain opening 3 and narrows to a constriction 22 behind the drain opening 3. The spring clip 12 thus encloses the drain opening 3 and thereby creates a holding force on the drain opening 3. Figure 8 shows a further embodiment of the fastening device 1. In this example, instead of the bend, the spring clip 12 has a secant piece 23 which, in its position of use, engages from the outside into the drain opening 3 in order to axially secure a hose connector 4 that is inserted there. For this purpose, the drain opening 3 in the example has a tangential opening 11 into which the secant piece 23 of the spring clip 12 also engages. At the same time, the spring clip 12 is thereby axially secured.

[0060] 10 to 13 show a further embodiment of a fastening device 1, similar to the embodiment of Figs. 1 to 3. In this embodiment, the drain opening 3 additionally has two openings 11, which in the example each coincide with one of the openings 11 in the inlet openings 2. In this way, the hose connectors 4 are secured both in the inlet openings 2 and in the drain opening 3. The spring clip 12 has a larger bend 14 so that the spring clip 12 also engages in the drain opening 3. In this case, the spring clip 12 forms a constriction 22, similar to the embodiment of Figs. 8 and 9, which fixes the spring clip 12 in the radial direction.

[0061] In addition, the fastening device 1 has a tangential groove 24 at the drain opening 3. The spring clip 12, or more precisely its flattened arc 13, engages in this groove 24 in the position of use, whereby the spring clip 12 is also axially secured.

[0062] / List of reference symbols List of reference symbols

[0063] 1 fastening device

[0064] 2 inlet openings

[0065] 3 Drain opening

[0066] 4 hose connectors

[0067] 5 Attachment

[0068] 6 Inlet hose

[0069] 7 crimp connectors

[0070] 8 Insert part

[0071] 9 circumferential groove

[0072] 10 basic bodies

[0073] 11 Opening

[0074] 12 spring clips

[0075] 13 sheets

[0076] 14 bend

[0077] 15 bent end

[0078] 16 Interface

[0079] 17 Fixing attachment

[0080] 18 Drain hose

[0081] 19 Snap connection

[0082] 20 Connecting line through the centers of the inlet openings

[0083] 21 Center of the drain opening

[0084] 22 Constriction

[0085] 23 secant piece

[0086] 24 grooves

[0087] 25 O-ring

[0088] Pf l Hose insertion direction

[0089] Pf2 spring clip insertion direction

[0090] / Claims

Claims

Claims 1. Fastening device for fastening hoses (6) to a sanitary fitting, with a base body (10) with two inlet openings (2) and one outlet opening (3) each for inserting a hose connector (4), characterized in that a spring clip (12) is arranged around the Drain opening (3) is guided around and engages from the outside at least into the two inlet openings (2) in order to enable securing there.

2. Fastening device according to claim 1, characterized in that the drain opening (3) is located substantially in the middle of the spring clip (12) and / or that the spring clip (12) additionally engages from the outside into the drain opening (3) in order to enable securing there, in particular wherein the drain opening (3) has at least one opening (11) into which the spring clip (12) engages.

3. Fastening device according to claim 1 or 2, characterized in that the spring clip (12) forms a substantially circular arc (13).

4. Fastening device according to one of the preceding claims, characterized in that the spring clip (12) engages behind the inlet openings (2) or the outlet opening (3) in its insertion direction (Pf2) by more than half, so that the spring clip (12) generates a holding force.

5. Fastening device according to one of the preceding claims, characterized in that the spring clip (12) is arranged transversely to the insertion direction (Pfl) of a hose connector (4) or in the radial direction in a Opening (11) of the inlet openings (2) and / or the outlet opening (3).

6. Fastening device according to claim 5, characterized in that one end (15) of the spring clip (12) engages in one opening (11) of the inlet opening (2) and / or the outlet opening (3).

7. Fastening device according to claim 6, characterized in that the ends (15) of the spring clip (12) each have a bend (14) deviating from the circular shape, in particular wherein the bend (14) engages in an opening (11) of the inlet opening (2) and / or the outlet opening (3).

8. Fastening device according to one of the preceding claims, characterized in that on the base body (10) an axial fixation for the spring clip (12) is formed, which fixes the spring clip (12) axially in the insertion direction (Pfl) of a hose connector (4), in particular wherein the axial fixation has at least one fixing projection (17) or a groove (24).

9. Fastening device according to claim 8, characterized in that the axial fixation is arranged on the outside of the drain opening (3) and / or that the axial fixation is formed by at least two axially spaced apart fixing projections (17) between which the spring clip (12) lies in the position of use, wherein preferably the axial distance between the fixing projections (17) essentially corresponds to the axial extent of the spring clip (12) and / or wherein preferably the two fixing projections (17) are arranged offset from one another in the circumferential direction of the drain opening (3) and / or wherein the axial fixation is formed by a groove (23) into which the spring clip (12) engages in the position of use.

10. Fastening device according to one of the preceding claims, characterized in that the spring clip (12) is made of metal or plastic.

11. Fastening device according to one of the preceding Claims, characterized in that the base body (10) has an interface (16) for connecting to a valve cartridge or that the base body (10) is formed on a valve cartridge. / Summary

Images